* [musl] add loongarch64 port v7.
@ 2023-04-18 1:28 王洪亮
2023-04-18 9:38 ` Szabolcs Nagy
0 siblings, 1 reply; 35+ messages in thread
From: 王洪亮 @ 2023-04-18 1:28 UTC (permalink / raw)
To: musl
[-- Attachment #1: Type: text/plain, Size: 6038 bytes --]
Hi,
I published 0001-add-loongarch64-port-v7.patch,as shown in the
attachment.
Fixed 3 issues:
1.Glibc has finally decided not to break their api to make it
consistent with linux uapi.so I modify the mcontext member to
match current glibc,and sigcontext to match kernel.
I reuse __attribute__((__aligned__(16))) to describe extcontext[]
instead of use the __uc_pad in ucontext_t.I think __uc_pad can
only ensure the ucontext_t.uc_mcontext is 16 alignment and
uc_mcontext.__extcontext[] is 16 alignment,But it cannot ensure
the sigcontext.sc_extcontext[] and mcontext.__extcontext[]
(only mcontext,not ucontext_t.uc_mcontext) is 16 alignment.this
is inconsistent with kernel and against the design intention
(extcontext[] used for 128bit vector register,need 16 alignment).
---
arch/loongarch64/bits/signal.h | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
index 83d40b1f..c56fe243 100644
--- a/arch/loongarch64/bits/signal.h
+++ b/arch/loongarch64/bits/signal.h
@@ -6,14 +6,27 @@
#define SIGSTKSZ 16384
#endif
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
typedef unsigned long greg_t, gregset_t[32];
-typedef struct sigcontext {
+struct sigcontext {
unsigned long sc_pc;
- gregset_t sc_regs;
- unsigned int sc_flags;
- unsigned long sc_extcontext[];
+ unsigned long sc_regs[32];
+ unsigned int sc_flags;
+ unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
+};
+
+typedef struct {
+ unsigned long __pc;
+ unsigned long __gregs[32];
+ unsigned int __flags;
+ unsigned long __extcontext[] __attribute__((__aligned__(16)));
} mcontext_t;
+#else
+typedef struct {
+ unsigned long __space[34];
+} mcontext_t;
+#endif
struct sigaltstack {
void *ss_sp;
@@ -23,11 +36,10 @@ struct sigaltstack {
typedef struct __ucontext
{
- unsigned long uc_flags;
+ unsigned long __uc_flags;
struct __ucontext *uc_link;
stack_t uc_stack;
sigset_t uc_sigmask;
- long __uc_pad;
mcontext_t uc_mcontext;
} ucontext_t;
--
2.31.1
---
arch/loongarch64/pthread_arch.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/loongarch64/pthread_arch.h
b/arch/loongarch64/pthread_arch.h
index 3224c14f..28fbfcd1 100644
--- a/arch/loongarch64/pthread_arch.h
+++ b/arch/loongarch64/pthread_arch.h
@@ -8,4 +8,4 @@ static inline uintptr_t __get_tp()
#define TLS_ABOVE_TP
#define GAP_ABOVE_TP 0
#define DTP_OFFSET 0
-#define MC_PC sc_pc
+#define MC_PC __pc
--
2.31.1
2.Fixed compile error when use clang.
The compile error such as:
../src/feny/loongarch64/fenv.S:10:13:error: invalid operand
for instruction
movgr2fcsr $r0，$t1;
^
---
src/fenv/loongarch64/fenv.S | 27 +++++++++++++++++----------
1 file changed, 17 insertions(+), 10 deletions(-)
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
index 175eb8b7..47ff4046 100644
--- a/src/fenv/loongarch64/fenv.S
+++ b/src/fenv/loongarch64/fenv.S
@@ -1,13 +1,20 @@
#ifndef __loongarch_soft_float
+#ifdef __clang__
+#define FCSR $fcsr0
+#else
+#define FCSR $r0
+#endif
+
+
.global feclearexcept
.type feclearexcept,@function
feclearexcept:
li.w $t0, 0x1f0000
and $a0, $a0, $t0
- movfcsr2gr $t1, $r0
+ movfcsr2gr $t1, FCSR
andn $t1, $t1, $a0
- movgr2fcsr $r0, $t1
+ movgr2fcsr FCSR, $t1
li.w $a0, 0
jr $ra
@@ -16,9 +23,9 @@ feclearexcept:
feraiseexcept:
li.w $t0, 0x1f0000
and $a0, $a0, $t0
- movfcsr2gr $t1, $r0
+ movfcsr2gr $t1, FCSR
or $t1, $t1, $a0
- movgr2fcsr $r0, $t1
+ movgr2fcsr FCSR, $t1
li.w $a0, 0
jr $ra
@@ -27,14 +34,14 @@ feraiseexcept:
fetestexcept:
li.w $t0, 0x1f0000
and $a0, $a0, $t0
- movfcsr2gr $t1, $r0
+ movfcsr2gr $t1, FCSR
and $a0, $t1, $a0
jr $ra
.global fegetround
.type fegetround,@function
fegetround:
- movfcsr2gr $t0, $r0
+ movfcsr2gr $t0, FCSR
andi $a0, $t0, 0x300
jr $ra
@@ -44,17 +51,17 @@ fegetround:
__fesetround:
li.w $t0, 0x300
and $a0, $a0, $t0
- movfcsr2gr $t1, $r0
+ movfcsr2gr $t1, FCSR
andn $t1, $t1, $t0
or $t1, $t1, $a0
- movgr2fcsr $r0, $t1
+ movgr2fcsr FCSR, $t1
li.w $a0, 0
jr $ra
.global fegetenv
.type fegetenv,@function
fegetenv:
- movfcsr2gr $t0, $r0
+ movfcsr2gr $t0, FCSR
st.w $t0, $a0, 0
li.w $a0, 0
jr $ra
@@ -65,7 +72,7 @@ fesetenv:
addi.d $t0, $a0, 1
beq $t0, $r0, 1f
ld.w $t0, $a0, 0
-1: movgr2fcsr $r0, $t0
+1: movgr2fcsr FCSR, $t0
li.w $a0, 0
jr $ra
--
2.31.1
3.Modify the __pad of stat to __pad1 to make it consistent with
current glibc.
---
arch/loongarch64/bits/stat.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
index b7f4221b..b604fb8f 100644
--- a/arch/loongarch64/bits/stat.h
+++ b/arch/loongarch64/bits/stat.h
@@ -6,7 +6,7 @@ struct stat {
uid_t st_uid;
gid_t st_gid;
dev_t st_rdev;
- unsigned long __pad;
+ unsigned long __pad1;
off_t st_size;
blksize_t st_blksize;
int __pad2;
--
2.37.1
[-- Attachment #2: 0001-add-loongarch64-port-v7.patch --]
[-- Type: text/x-patch, Size: 44541 bytes --]
From 504db4b4c357385a0a39d220cfc3eee1737f49ff Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Mon, 17 Apr 2023 15:54:57 +0800
Subject: [PATCH] add loongarch64 port v7.
Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Author: Meidan Li <limeidan@loongson.cn>
Author: Guoqi Chen <chenguoqi@loongson.cn>
Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Author: Fan peng <fanpeng@loongson.cn>
Author: Jiantao Shan <shanjiantao@loongson.cn>
Author: Xuhui Qiang <qiangxuhui@loongson.cn>
Author: Jingyun Hua <huajingyun@loongson.cn>
Author: Liu xue <liuxue@loongson.cn>
Author: Hongliang Wang <wanghongliang@loongson.cn>
Signed-off-by: wanghongliang <wanghongliang@loongson.cn>
---
arch/loongarch64/atomic_arch.h | 53 ++++
arch/loongarch64/bits/alltypes.h.in | 18 ++
arch/loongarch64/bits/fenv.h | 20 ++
arch/loongarch64/bits/float.h | 16 ++
arch/loongarch64/bits/posix.h | 2 +
arch/loongarch64/bits/ptrace.h | 4 +
arch/loongarch64/bits/reg.h | 2 +
arch/loongarch64/bits/setjmp.h | 1 +
arch/loongarch64/bits/signal.h | 91 +++++++
arch/loongarch64/bits/stat.h | 18 ++
arch/loongarch64/bits/stdint.h | 20 ++
arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
arch/loongarch64/bits/user.h | 5 +
arch/loongarch64/crt_arch.h | 13 +
arch/loongarch64/pthread_arch.h | 11 +
arch/loongarch64/reloc.h | 20 ++
arch/loongarch64/syscall_arch.h | 137 ++++++++++
configure | 5 +
include/elf.h | 104 ++++++-
src/fenv/loongarch64/fenv.S | 78 ++++++
src/ldso/loongarch64/dlsym.s | 7 +
src/setjmp/loongarch64/longjmp.S | 32 +++
src/setjmp/loongarch64/setjmp.S | 34 +++
src/signal/loongarch64/restore.s | 10 +
src/signal/loongarch64/sigsetjmp.s | 25 ++
src/thread/loongarch64/__set_thread_area.s | 7 +
src/thread/loongarch64/__unmapself.s | 7 +
src/thread/loongarch64/clone.s | 28 ++
src/thread/loongarch64/syscall_cp.s | 29 ++
29 files changed, 1099 insertions(+), 1 deletion(-)
create mode 100644 arch/loongarch64/atomic_arch.h
create mode 100644 arch/loongarch64/bits/alltypes.h.in
create mode 100644 arch/loongarch64/bits/fenv.h
create mode 100644 arch/loongarch64/bits/float.h
create mode 100644 arch/loongarch64/bits/posix.h
create mode 100644 arch/loongarch64/bits/ptrace.h
create mode 100644 arch/loongarch64/bits/reg.h
create mode 100644 arch/loongarch64/bits/setjmp.h
create mode 100644 arch/loongarch64/bits/signal.h
create mode 100644 arch/loongarch64/bits/stat.h
create mode 100644 arch/loongarch64/bits/stdint.h
create mode 100644 arch/loongarch64/bits/syscall.h.in
create mode 100644 arch/loongarch64/bits/user.h
create mode 100644 arch/loongarch64/crt_arch.h
create mode 100644 arch/loongarch64/pthread_arch.h
create mode 100644 arch/loongarch64/reloc.h
create mode 100644 arch/loongarch64/syscall_arch.h
create mode 100644 src/fenv/loongarch64/fenv.S
create mode 100644 src/ldso/loongarch64/dlsym.s
create mode 100644 src/setjmp/loongarch64/longjmp.S
create mode 100644 src/setjmp/loongarch64/setjmp.S
create mode 100644 src/signal/loongarch64/restore.s
create mode 100644 src/signal/loongarch64/sigsetjmp.s
create mode 100644 src/thread/loongarch64/__set_thread_area.s
create mode 100644 src/thread/loongarch64/__unmapself.s
create mode 100644 src/thread/loongarch64/clone.s
create mode 100644 src/thread/loongarch64/syscall_cp.s
diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
new file mode 100644
index 00000000..2225d027
--- /dev/null
+++ b/arch/loongarch64/atomic_arch.h
@@ -0,0 +1,53 @@
+#define a_ll a_ll
+static inline int a_ll(volatile int *p)
+{
+ int v;
+ __asm__ __volatile__ (
+ "ll.w %0, %1"
+ : "=r"(v)
+ : "ZC"(*p));
+ return v;
+}
+
+#define a_sc a_sc
+static inline int a_sc(volatile int *p, int v)
+{
+ int r;
+ __asm__ __volatile__ (
+ "sc.w %0, %1"
+ : "=r"(r), "=ZC"(*p)
+ : "0"(v) : "memory");
+ return r;
+}
+
+#define a_ll_p a_ll_p
+static inline void *a_ll_p(volatile void *p)
+{
+ void *v;
+ __asm__ __volatile__ (
+ "ll.d %0, %1"
+ : "=r"(v)
+ : "ZC"(*(void *volatile *)p));
+ return v;
+}
+
+#define a_sc_p a_sc_p
+static inline int a_sc_p(volatile void *p, void *v)
+{
+ long r;
+ __asm__ __volatile__ (
+ "sc.d %0, %1"
+ : "=r"(r), "=ZC"(*(void *volatile *)p)
+ : "0"(v)
+ : "memory");
+ return r;
+}
+
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("dbar 0" : : : "memory");
+}
+
+#define a_pre_llsc a_barrier
+#define a_post_llsc a_barrier
diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
new file mode 100644
index 00000000..084f5a7c
--- /dev/null
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -0,0 +1,18 @@
+#define _Addr long
+#define _Int64 long
+#define _Reg long
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
+#define __LONG_MAX 0x7fffffffffffffffL
+
+#ifndef __cplusplus
+TYPEDEF int wchar_t;
+#endif
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
+
+TYPEDEF unsigned int nlink_t;
+TYPEDEF int blksize_t;
diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
new file mode 100644
index 00000000..99e916e1
--- /dev/null
+++ b/arch/loongarch64/bits/fenv.h
@@ -0,0 +1,20 @@
+#define FE_INEXACT 0x010000
+#define FE_UNDERFLOW 0x020000
+#define FE_OVERFLOW 0x040000
+#define FE_DIVBYZERO 0x080000
+#define FE_INVALID 0x100000
+
+#define FE_ALL_EXCEPT 0x1F0000
+
+#define FE_TONEAREST 0x000
+#define FE_TOWARDZERO 0x100
+#define FE_UPWARD 0x200
+#define FE_DOWNWARD 0x300
+
+typedef unsigned fexcept_t;
+
+typedef struct {
+ unsigned int __cw;
+} fenv_t;
+
+#define FE_DFL_ENV ((const fenv_t *) -1)
diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
new file mode 100644
index 00000000..63e86d44
--- /dev/null
+++ b/arch/loongarch64/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
+#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
+#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
+#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+
+#define LDBL_MANT_DIG 113
+#define LDBL_MIN_EXP (-16381)
+#define LDBL_MAX_EXP 16384
+
+#define LDBL_DIG 33
+#define LDBL_MIN_10_EXP (-4931)
+#define LDBL_MAX_10_EXP 4932
+
+#define DECIMAL_DIG 36
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..c37b94c1
--- /dev/null
+++ b/arch/loongarch64/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_LP64_OFF64 1
+#define _POSIX_V7_LP64_OFF64 1
diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
new file mode 100644
index 00000000..dce2fa51
--- /dev/null
+++ b/arch/loongarch64/bits/ptrace.h
@@ -0,0 +1,4 @@
+#define PTRACE_GET_THREAD_AREA 25
+#define PTRACE_SET_THREAD_AREA 26
+#define PTRACE_GET_WATCH_REGS 0xd0
+#define PTRACE_SET_WATCH_REGS 0xd1
diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
new file mode 100644
index 00000000..2633f39d
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,2 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..4bfa374d
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long __jmp_buf[23];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..c56fe243
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,91 @@
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define MINSIGSTKSZ 4096
+#define SIGSTKSZ 16384
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef unsigned long greg_t, gregset_t[32];
+
+struct sigcontext {
+ unsigned long sc_pc;
+ unsigned long sc_regs[32];
+ unsigned int sc_flags;
+ unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
+};
+
+typedef struct {
+ unsigned long __pc;
+ unsigned long __gregs[32];
+ unsigned int __flags;
+ unsigned long __extcontext[] __attribute__((__aligned__(16)));
+} mcontext_t;
+#else
+typedef struct {
+ unsigned long __space[34];
+} mcontext_t;
+#endif
+
+struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+};
+
+typedef struct __ucontext
+{
+ unsigned long __uc_flags;
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ sigset_t uc_sigmask;
+ mcontext_t uc_mcontext;
+} ucontext_t;
+
+#define SA_NOCLDSTOP 1
+#define SA_NOCLDWAIT 2
+#define SA_SIGINFO 4
+#define SA_ONSTACK 0x08000000
+#define SA_RESTART 0x10000000
+#define SA_NODEFER 0x40000000
+#define SA_RESETHAND 0x80000000
+#define SA_RESTORER 0x0
+
+#endif
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT SIGABRT
+#define SIGBUS 7
+#define SIGFPE 8
+#define SIGKILL 9
+#define SIGUSR1 10
+#define SIGSEGV 11
+#define SIGUSR2 12
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGTERM 15
+#define SIGSTKFLT 16
+#define SIGCHLD 17
+#define SIGCONT 18
+#define SIGSTOP 19
+#define SIGTSTP 20
+#define SIGTTIN 21
+#define SIGTTOU 22
+#define SIGURG 23
+#define SIGXCPU 24
+#define SIGXFSZ 25
+#define SIGVTALRM 26
+#define SIGPROF 27
+#define SIGWINCH 28
+#define SIGIO 29
+#define SIGPOLL SIGIO
+#define SIGPWR 30
+#define SIGSYS 31
+#define SIGUNUSED SIGSYS
+#define _NSIG 65
diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
new file mode 100644
index 00000000..b604fb8f
--- /dev/null
+++ b/arch/loongarch64/bits/stat.h
@@ -0,0 +1,18 @@
+struct stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ unsigned long __pad1;
+ off_t st_size;
+ blksize_t st_blksize;
+ int __pad2;
+ blkcnt_t st_blocks;
+ struct timespec st_atim;
+ struct timespec st_mtim;
+ struct timespec st_ctim;
+ unsigned __unused[2];
+};
diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
new file mode 100644
index 00000000..60c12499
--- /dev/null
+++ b/arch/loongarch64/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST32_MIN INT32_MIN
+
+#define INT_FAST16_MAX INT32_MAX
+#define INT_FAST32_MAX INT32_MAX
+
+#define UINT_FAST16_MAX UINT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN INT64_MIN
+#define INTPTR_MAX INT64_MAX
+#define UINTPTR_MAX UINT64_MAX
+#define PTRDIFF_MIN INT64_MIN
+#define PTRDIFF_MAX INT64_MAX
+#define SIZE_MAX UINT64_MAX
diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
new file mode 100644
index 00000000..0980e533
--- /dev/null
+++ b/arch/loongarch64/bits/syscall.h.in
@@ -0,0 +1,303 @@
+#define __NR_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+#define __NR_setxattr 5
+#define __NR_lsetxattr 6
+#define __NR_fsetxattr 7
+#define __NR_getxattr 8
+#define __NR_lgetxattr 9
+#define __NR_fgetxattr 10
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_flistxattr 13
+#define __NR_removexattr 14
+#define __NR_lremovexattr 15
+#define __NR_fremovexattr 16
+#define __NR_getcwd 17
+#define __NR_lookup_dcookie 18
+#define __NR_eventfd2 19
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR3264_fcntl 25
+#define __NR_inotify_init1 26
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_rm_watch 28
+#define __NR_ioctl 29
+#define __NR_ioprio_set 30
+#define __NR_ioprio_get 31
+#define __NR_flock 32
+#define __NR_mknodat 33
+#define __NR_mkdirat 34
+#define __NR_unlinkat 35
+#define __NR_symlinkat 36
+#define __NR_linkat 37
+#define __NR_umount2 39
+#define __NR_mount 40
+#define __NR_pivot_root 41
+#define __NR_nfsservctl 42
+#define __NR3264_statfs 43
+#define __NR3264_fstatfs 44
+#define __NR3264_truncate 45
+#define __NR3264_ftruncate 46
+#define __NR_fallocate 47
+#define __NR_faccessat 48
+#define __NR_chdir 49
+#define __NR_fchdir 50
+#define __NR_chroot 51
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchownat 54
+#define __NR_fchown 55
+#define __NR_openat 56
+#define __NR_close 57
+#define __NR_vhangup 58
+#define __NR_pipe2 59
+#define __NR_quotactl 60
+#define __NR_getdents64 61
+#define __NR3264_lseek 62
+#define __NR_read 63
+#define __NR_write 64
+#define __NR_readv 65
+#define __NR_writev 66
+#define __NR_pread64 67
+#define __NR_pwrite64 68
+#define __NR_preadv 69
+#define __NR_pwritev 70
+#define __NR3264_sendfile 71
+#define __NR_pselect6 72
+#define __NR_ppoll 73
+#define __NR_signalfd4 74
+#define __NR_vmsplice 75
+#define __NR_splice 76
+#define __NR_tee 77
+#define __NR_readlinkat 78
+#define __NR_sync 81
+#define __NR_fsync 82
+#define __NR_fdatasync 83
+#define __NR_sync_file_range 84
+#define __NR_timerfd_create 85
+#define __NR_timerfd_settime 86
+#define __NR_timerfd_gettime 87
+#define __NR_utimensat 88
+#define __NR_acct 89
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_personality 92
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_waitid 95
+#define __NR_set_tid_address 96
+#define __NR_unshare 97
+#define __NR_futex 98
+#define __NR_set_robust_list 99
+#define __NR_get_robust_list 100
+#define __NR_nanosleep 101
+#define __NR_getitimer 102
+#define __NR_setitimer 103
+#define __NR_kexec_load 104
+#define __NR_init_module 105
+#define __NR_delete_module 106
+#define __NR_timer_create 107
+#define __NR_timer_gettime 108
+#define __NR_timer_getoverrun 109
+#define __NR_timer_settime 110
+#define __NR_timer_delete 111
+#define __NR_clock_settime 112
+#define __NR_clock_gettime 113
+#define __NR_clock_getres 114
+#define __NR_clock_nanosleep 115
+#define __NR_syslog 116
+#define __NR_ptrace 117
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_getscheduler 120
+#define __NR_sched_getparam 121
+#define __NR_sched_setaffinity 122
+#define __NR_sched_getaffinity 123
+#define __NR_sched_yield 124
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_rr_get_interval 127
+#define __NR_restart_syscall 128
+#define __NR_kill 129
+#define __NR_tkill 130
+#define __NR_tgkill 131
+#define __NR_sigaltstack 132
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_setpriority 140
+#define __NR_getpriority 141
+#define __NR_reboot 142
+#define __NR_setregid 143
+#define __NR_setgid 144
+#define __NR_setreuid 145
+#define __NR_setuid 146
+#define __NR_setresuid 147
+#define __NR_getresuid 148
+#define __NR_setresgid 149
+#define __NR_getresgid 150
+#define __NR_setfsuid 151
+#define __NR_setfsgid 152
+#define __NR_times 153
+#define __NR_setpgid 154
+#define __NR_getpgid 155
+#define __NR_getsid 156
+#define __NR_setsid 157
+#define __NR_getgroups 158
+#define __NR_setgroups 159
+#define __NR_uname 160
+#define __NR_sethostname 161
+#define __NR_setdomainname 162
+#define __NR_getrlimit 163
+#define __NR_setrlimit 164
+#define __NR_getrusage 165
+#define __NR_umask 166
+#define __NR_prctl 167
+#define __NR_getcpu 168
+#define __NR_gettimeofday 169
+#define __NR_settimeofday 170
+#define __NR_adjtimex 171
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getuid 174
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getegid 177
+#define __NR_gettid 178
+#define __NR_sysinfo 179
+#define __NR_mq_open 180
+#define __NR_mq_unlink 181
+#define __NR_mq_timedsend 182
+#define __NR_mq_timedreceive 183
+#define __NR_mq_notify 184
+#define __NR_mq_getsetattr 185
+#define __NR_msgget 186
+#define __NR_msgctl 187
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_semget 190
+#define __NR_semctl 191
+#define __NR_semtimedop 192
+#define __NR_semop 193
+#define __NR_shmget 194
+#define __NR_shmctl 195
+#define __NR_shmat 196
+#define __NR_shmdt 197
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_bind 200
+#define __NR_listen 201
+#define __NR_accept 202
+#define __NR_connect 203
+#define __NR_getsockname 204
+#define __NR_getpeername 205
+#define __NR_sendto 206
+#define __NR_recvfrom 207
+#define __NR_setsockopt 208
+#define __NR_getsockopt 209
+#define __NR_shutdown 210
+#define __NR_sendmsg 211
+#define __NR_recvmsg 212
+#define __NR_readahead 213
+#define __NR_brk 214
+#define __NR_munmap 215
+#define __NR_mremap 216
+#define __NR_add_key 217
+#define __NR_request_key 218
+#define __NR_keyctl 219
+#define __NR_clone 220
+#define __NR_execve 221
+#define __NR3264_mmap 222
+#define __NR3264_fadvise64 223
+#define __NR_swapon 224
+#define __NR_swapoff 225
+#define __NR_mprotect 226
+#define __NR_msync 227
+#define __NR_mlock 228
+#define __NR_munlock 229
+#define __NR_mlockall 230
+#define __NR_munlockall 231
+#define __NR_mincore 232
+#define __NR_madvise 233
+#define __NR_remap_file_pages 234
+#define __NR_mbind 235
+#define __NR_get_mempolicy 236
+#define __NR_set_mempolicy 237
+#define __NR_migrate_pages 238
+#define __NR_move_pages 239
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_perf_event_open 241
+#define __NR_accept4 242
+#define __NR_recvmmsg 243
+#define __NR_arch_specific_syscall 244
+#define __NR_wait4 260
+#define __NR_prlimit64 261
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_name_to_handle_at 264
+#define __NR_open_by_handle_at 265
+#define __NR_clock_adjtime 266
+#define __NR_syncfs 267
+#define __NR_setns 268
+#define __NR_sendmmsg 269
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_kcmp 272
+#define __NR_finit_module 273
+#define __NR_sched_setattr 274
+#define __NR_sched_getattr 275
+#define __NR_renameat2 276
+#define __NR_seccomp 277
+#define __NR_getrandom 278
+#define __NR_memfd_create 279
+#define __NR_bpf 280
+#define __NR_execveat 281
+#define __NR_userfaultfd 282
+#define __NR_membarrier 283
+#define __NR_mlock2 284
+#define __NR_copy_file_range 285
+#define __NR_preadv2 286
+#define __NR_pwritev2 287
+#define __NR_pkey_mprotect 288
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_statx 291
+#define __NR_io_pgetevents 292
+#define __NR_rseq 293
+#define __NR_kexec_file_load 294
+#define __NR_pidfd_send_signal 424
+#define __NR_io_uring_setup 425
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+#define __NR_pidfd_open 434
+#define __NR_clone3 435
+#define __NR_close_range 436
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
+#define __NR_faccessat2 439
+#define __NR_process_madvise 440
+#define __NR_fcntl __NR3264_fcntl
+#define __NR_statfs __NR3264_statfs
+#define __NR_fstatfs __NR3264_fstatfs
+#define __NR_truncate __NR3264_truncate
+#define __NR_ftruncate __NR3264_ftruncate
+#define __NR_lseek __NR3264_lseek
+#define __NR_sendfile __NR3264_sendfile
+#define __NR_mmap __NR3264_mmap
+#define __NR_fadvise64 __NR3264_fadvise64
diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
new file mode 100644
index 00000000..5a71d132
--- /dev/null
+++ b/arch/loongarch64/bits/user.h
@@ -0,0 +1,5 @@
+#define ELF_NGREG 45
+#define ELF_NFPREG 33
+
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
new file mode 100644
index 00000000..e0760d9e
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,13 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type " START ", @function\n"
+START ":\n"
+" move $fp, $zero\n"
+" move $a0, $sp\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+" la.local $a1, _DYNAMIC\n"
+" bstrins.d $sp, $zero, 3, 0\n"
+" b " START "_c\n"
+);
diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
new file mode 100644
index 00000000..28fbfcd1
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,11 @@
+static inline uintptr_t __get_tp()
+{
+ uintptr_t tp;
+ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
+ return tp;
+}
+
+#define TLS_ABOVE_TP
+#define GAP_ABOVE_TP 0
+#define DTP_OFFSET 0
+#define MC_PC __pc
diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
new file mode 100644
index 00000000..68212320
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,20 @@
+#ifdef __loongarch_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "loongarch64" FP_SUFFIX
+
+#define TPOFF_K 0
+
+#define REL_PLT R_LARCH_JUMP_SLOT
+#define REL_COPY R_LARCH_COPY
+#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
+#define REL_DTPOFF R_LARCH_TLS_DTPREL64
+#define REL_TPOFF R_LARCH_TLS_TPREL64
+#define REL_RELATIVE R_LARCH_RELATIVE
+#define REL_SYMBOLIC R_LARCH_64
+
+#define CRTJMP(pc,sp) __asm__ __volatile__( \
+ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..4d5e1885
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+ "$t0", "$t1", "$t2", "$t3", \
+ "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
+
+static inline long __syscall0(long n)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0");
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "=r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall1(long n, long a)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+ register long a6 __asm__("$a6") = g;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_5.10"
+
+#define IPC_64 0
diff --git a/configure b/configure
index 853bf05e..4d2ecc9f 100755
--- a/configure
+++ b/configure
@@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
x86_64-nt64*) ARCH=nt64 ;;
x86_64*) ARCH=x86_64 ;;
+loongarch64*) ARCH=loongarch64 ;;
m68k*) ARCH=m68k ;;
mips64*|mipsisa64*) ARCH=mips64 ;;
mips*) ARCH=mips ;;
@@ -658,6 +659,10 @@ if test "$ARCH" = "aarch64" ; then
trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
fi
+if test "$ARCH" = "loongarch64" ; then
+trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
+fi
+
if test "$ARCH" = "m68k" ; then
if trycppif "__HAVE_68881__" ; then : ;
elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
diff --git a/include/elf.h b/include/elf.h
index 23f2c4bc..7114f262 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -315,7 +315,8 @@ typedef struct {
#define EM_RISCV 243
#define EM_BPF 247
#define EM_CSKY 252
-#define EM_NUM 253
+#define EM_LOONGARCH 258
+#define EM_NUM 259
#define EM_ALPHA 0x9026
@@ -699,6 +700,11 @@ typedef struct {
#define NT_MIPS_FP_MODE 0x801
#define NT_MIPS_MSA 0x802
#define NT_VERSION 1
+#define NT_LOONGARCH_CPUCFG 0xa00
+#define NT_LOONGARCH_CSR 0xa01
+#define NT_LOONGARCH_LSX 0xa02
+#define NT_LOONGARCH_LASX 0xa03
+#define NT_LOONGARCH_LBT 0xa04
@@ -3293,6 +3299,102 @@ enum
#define R_RISCV_SET32 56
#define R_RISCV_32_PCREL 57
+#define EF_LARCH_ABI_MODIFIER_MASK 0x07
+#define EF_LARCH_ABI_SOFT_FLOAT 0x01
+#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
+#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
+#define EF_LARCH_OBJABI_V1 0x40
+
+#define R_LARCH_NONE 0
+#define R_LARCH_32 1
+#define R_LARCH_64 2
+#define R_LARCH_RELATIVE 3
+#define R_LARCH_COPY 4
+#define R_LARCH_JUMP_SLOT 5
+#define R_LARCH_TLS_DTPMOD32 6
+#define R_LARCH_TLS_DTPMOD64 7
+#define R_LARCH_TLS_DTPREL32 8
+#define R_LARCH_TLS_DTPREL64 9
+#define R_LARCH_TLS_TPREL32 10
+#define R_LARCH_TLS_TPREL64 11
+#define R_LARCH_IRELATIVE 12
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_MARK_PCREL 21
+#define R_LARCH_SOP_PUSH_PCREL 22
+#define R_LARCH_SOP_PUSH_ABSOLUTE 23
+#define R_LARCH_SOP_PUSH_DUP 24
+#define R_LARCH_SOP_PUSH_GPREL 25
+#define R_LARCH_SOP_PUSH_TLS_TPREL 26
+#define R_LARCH_SOP_PUSH_TLS_GOT 27
+#define R_LARCH_SOP_PUSH_TLS_GD 28
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#define R_LARCH_SOP_ASSERT 30
+#define R_LARCH_SOP_NOT 31
+#define R_LARCH_SOP_SUB 32
+#define R_LARCH_SOP_SL 33
+#define R_LARCH_SOP_SR 34
+#define R_LARCH_SOP_ADD 35
+#define R_LARCH_SOP_AND 36
+#define R_LARCH_SOP_IF_ELSE 37
+#define R_LARCH_SOP_POP_32_S_10_5 38
+#define R_LARCH_SOP_POP_32_U_10_12 39
+#define R_LARCH_SOP_POP_32_S_10_12 40
+#define R_LARCH_SOP_POP_32_S_10_16 41
+#define R_LARCH_SOP_POP_32_S_10_16_S2 42
+#define R_LARCH_SOP_POP_32_S_5_20 43
+#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
+#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
+#define R_LARCH_SOP_POP_32_U 46
+#define R_LARCH_ADD8 47
+#define R_LARCH_ADD16 48
+#define R_LARCH_ADD24 49
+#define R_LARCH_ADD32 50
+#define R_LARCH_ADD64 51
+#define R_LARCH_SUB8 52
+#define R_LARCH_SUB16 53
+#define R_LARCH_SUB24 54
+#define R_LARCH_SUB32 55
+#define R_LARCH_SUB64 56
+#define R_LARCH_GNU_VTINHERIT 57
+#define R_LARCH_GNU_VTENTRY 58
+#define R_LARCH_B16 64
+#define R_LARCH_B21 65
+#define R_LARCH_B26 66
+#define R_LARCH_ABS_HI20 67
+#define R_LARCH_ABS_LO12 68
+#define R_LARCH_ABS64_LO20 69
+#define R_LARCH_ABS64_HI12 70
+#define R_LARCH_PCALA_HI20 71
+#define R_LARCH_PCALA_LO12 72
+#define R_LARCH_PCALA64_LO20 73
+#define R_LARCH_PCALA64_HI12 74
+#define R_LARCH_GOT_PC_HI20 75
+#define R_LARCH_GOT_PC_LO12 76
+#define R_LARCH_GOT64_PC_LO20 77
+#define R_LARCH_GOT64_PC_HI12 78
+#define R_LARCH_GOT_HI20 79
+#define R_LARCH_GOT_LO12 80
+#define R_LARCH_GOT64_LO20 81
+#define R_LARCH_GOT64_HI12 82
+#define R_LARCH_TLS_LE_HI20 83
+#define R_LARCH_TLS_LE_LO12 84
+#define R_LARCH_TLS_LE64_LO20 85
+#define R_LARCH_TLS_LE64_HI12 86
+#define R_LARCH_TLS_IE_PC_HI20 87
+#define R_LARCH_TLS_IE_PC_LO12 88
+#define R_LARCH_TLS_IE64_PC_LO20 89
+#define R_LARCH_TLS_IE64_PC_HI12 90
+#define R_LARCH_TLS_IE_HI20 91
+#define R_LARCH_TLS_IE_LO12 92
+#define R_LARCH_TLS_IE64_LO20 93
+#define R_LARCH_TLS_IE64_HI12 94
+#define R_LARCH_TLS_LD_PC_HI20 95
+#define R_LARCH_TLS_LD_HI20 96
+#define R_LARCH_TLS_GD_PC_HI20 97
+#define R_LARCH_TLS_GD_HI20 98
+#define R_LARCH_32_PCREL 99
+#define R_LARCH_RELAX 100
+
#ifdef __cplusplus
}
#endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..80e768ba
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,78 @@
+#ifndef __loongarch_soft_float
+
+#ifdef __clang__
+#define FCSR $fcsr0
+#else
+#define FCSR $r0
+#endif
+
+.global feclearexcept
+.type feclearexcept,@function
+feclearexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global feraiseexcept
+.type feraiseexcept,@function
+feraiseexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fetestexcept
+.type fetestexcept,@function
+fetestexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ and $a0, $t1, $a0
+ jr $ra
+
+.global fegetround
+.type fegetround,@function
+fegetround:
+ movfcsr2gr $t0, FCSR
+ andi $a0, $t0, 0x300
+ jr $ra
+
+.global __fesetround
+.hidden __fesetround
+.type __fesetround,@function
+__fesetround:
+ li.w $t0, 0x300
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $t0
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fegetenv
+.type fegetenv,@function
+fegetenv:
+ movfcsr2gr $t0, FCSR
+ st.w $t0, $a0, 0
+ li.w $a0, 0
+ jr $ra
+
+.global fesetenv
+.type fesetenv,@function
+fesetenv:
+ addi.d $t0, $a0, 1
+ beq $t0, $r0, 1f
+ ld.w $t0, $a0, 0
+1: movgr2fcsr FCSR, $t0
+ li.w $a0, 0
+ jr $ra
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..26fabcdb
--- /dev/null
+++ b/src/ldso/loongarch64/dlsym.s
@@ -0,0 +1,7 @@
+.global dlsym
+.hidden __dlsym
+.type dlsym,@function
+dlsym:
+ move $a2, $ra
+ la.global $t0, __dlsym
+ jr $t0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..896d2e26
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,32 @@
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+_longjmp:
+longjmp:
+ ld.d $ra, $a0, 0
+ ld.d $sp, $a0, 8
+ ld.d $r21,$a0, 16
+ ld.d $fp, $a0, 24
+ ld.d $s0, $a0, 32
+ ld.d $s1, $a0, 40
+ ld.d $s2, $a0, 48
+ ld.d $s3, $a0, 56
+ ld.d $s4, $a0, 64
+ ld.d $s5, $a0, 72
+ ld.d $s6, $a0, 80
+ ld.d $s7, $a0, 88
+ ld.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fld.d $fs0, $a0, 104
+ fld.d $fs1, $a0, 112
+ fld.d $fs2, $a0, 120
+ fld.d $fs3, $a0, 128
+ fld.d $fs4, $a0, 136
+ fld.d $fs5, $a0, 144
+ fld.d $fs6, $a0, 152
+ fld.d $fs7, $a0, 160
+#endif
+ sltui $a0, $a1, 1
+ add.d $a0, $a0, $a1
+ jr $ra
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..d158a3d2
--- /dev/null
+++ b/src/setjmp/loongarch64/setjmp.S
@@ -0,0 +1,34 @@
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+__setjmp:
+_setjmp:
+setjmp:
+ st.d $ra, $a0, 0
+ st.d $sp, $a0, 8
+ st.d $r21,$a0, 16
+ st.d $fp, $a0, 24
+ st.d $s0, $a0, 32
+ st.d $s1, $a0, 40
+ st.d $s2, $a0, 48
+ st.d $s3, $a0, 56
+ st.d $s4, $a0, 64
+ st.d $s5, $a0, 72
+ st.d $s6, $a0, 80
+ st.d $s7, $a0, 88
+ st.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fst.d $fs0, $a0, 104
+ fst.d $fs1, $a0, 112
+ fst.d $fs2, $a0, 120
+ fst.d $fs3, $a0, 128
+ fst.d $fs4, $a0, 136
+ fst.d $fs5, $a0, 144
+ fst.d $fs6, $a0, 152
+ fst.d $fs7, $a0, 160
+#endif
+ move $a0, $zero
+ jr $ra
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..f8e6daeb
--- /dev/null
+++ b/src/signal/loongarch64/restore.s
@@ -0,0 +1,10 @@
+.global __restore_rt
+.global __restore
+.hidden __restore_rt
+.hidden __restore
+.type __restore_rt,@function
+.type __restore,@function
+__restore_rt:
+__restore:
+ li.w $a7, 139
+ syscall 0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..992ab1a4
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,25 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type sigsetjmp,@function
+.type __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+ beq $a1, $zero, 1f
+ st.d $ra, $a0, 168
+ st.d $s0, $a0, 176
+ move $s0, $a0
+
+ la.global $t0, setjmp
+ jirl $ra, $t0, 0
+
+ move $a1, $a0 # Return from 'setjmp' or 'longjmp'
+ move $a0, $s0
+ ld.d $ra, $a0, 168
+ ld.d $s0, $a0, 176
+
+.hidden __sigsetjmp_tail
+ la.global $t0, __sigsetjmp_tail
+ jr $t0
+1:
+ la.global $t0, setjmp
+ jr $t0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..ffdd52f1
--- /dev/null
+++ b/src/thread/loongarch64/__set_thread_area.s
@@ -0,0 +1,7 @@
+.global __set_thread_area
+.hidden __set_thread_area
+.type __set_thread_area,@function
+__set_thread_area:
+ move $tp, $a0
+ move $a0, $zero
+ jr $ra
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..1de334af
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global __unmapself
+.type __unmapself, @function
+__unmapself:
+ li.d $a7, 215 # call munmap
+ syscall 0
+ li.d $a7, 93 # call exit
+ syscall 0
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..db9015e6
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,28 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+# a0, a1, a2, a3, a4, a5, a6
+# sys_clone(flags, stack, ptid, ctid, tls)
+# a0, a1, a2, a3, a4
+
+.global __clone
+.hidden __clone
+.type __clone,@function
+__clone:
+ # Save function pointer and argument pointer on new thread stack
+ addi.d $a1, $a1, -16
+ st.d $a0, $a1, 0 # save function pointer
+ st.d $a3, $a1, 8 # save argument pointer
+ or $a0, $a2, $zero
+ or $a2, $a4, $zero
+ or $a3, $a6, $zero
+ or $a4, $a5, $zero
+ ori $a7, $zero, 220
+ syscall 0 # call clone
+
+ beqz $a0, 1f # whether child process
+ jirl $zero, $ra, 0 # parent process return
+1:
+ ld.d $t8, $sp, 0 # function pointer
+ ld.d $a0, $sp, 8 # argument pointer
+ jirl $ra, $t8, 0 # call the user's function
+ ori $a7, $zero, 93
+ syscall 0 # child process exit
diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
new file mode 100644
index 00000000..0fbc7a47
--- /dev/null
+++ b/src/thread/loongarch64/syscall_cp.s
@@ -0,0 +1,29 @@
+.global __cp_begin
+.hidden __cp_begin
+.global __cp_end
+.hidden __cp_end
+.global __cp_cancel
+.hidden __cp_cancel
+.hidden __cancel
+.global __syscall_cp_asm
+.hidden __syscall_cp_asm
+.type __syscall_cp_asm,@function
+
+__syscall_cp_asm:
+__cp_begin:
+ ld.w $a0, $a0, 0
+ bnez $a0, __cp_cancel
+ move $t8, $a1 # reserve system call number
+ move $a0, $a2
+ move $a1, $a3
+ move $a2, $a4
+ move $a3, $a5
+ move $a4, $a6
+ move $a5, $a7
+ move $a7, $t8
+ syscall 0
+__cp_end:
+ jr $ra
+__cp_cancel:
+ la.local $t8, __cancel
+ jr $t8
--
2.31.1
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-04-18 1:28 [musl] add loongarch64 port v7 王洪亮
@ 2023-04-18 9:38 ` Szabolcs Nagy
2023-04-18 10:47 ` Szabolcs Nagy
2023-04-18 11:32 ` 王洪亮
0 siblings, 2 replies; 35+ messages in thread
From: Szabolcs Nagy @ 2023-04-18 9:38 UTC (permalink / raw)
To: 王洪亮; +Cc: musl
* 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
> +++ b/arch/loongarch64/bits/signal.h
> @@ -6,14 +6,27 @@
> #define SIGSTKSZ 16384
> #endif
>
> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> typedef unsigned long greg_t, gregset_t[32];
>
> -typedef struct sigcontext {
> +struct sigcontext {
> unsigned long sc_pc;
> - gregset_t sc_regs;
> - unsigned int sc_flags;
> - unsigned long sc_extcontext[];
> + unsigned long sc_regs[32];
> + unsigned int sc_flags;
> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
> +};
this looks good. (i don't know if this is really
needed in signal.h, but other targets have it too)
> +
> +typedef struct {
> + unsigned long __pc;
> + unsigned long __gregs[32];
> + unsigned int __flags;
> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
> } mcontext_t;
i would use the same struct tag as glibc so
typedef struct mcontext_t { ...
(we don't need c++ abi compat with glibc, but
it's nicer to be consistent)
> +#else
> +typedef struct {
> + unsigned long __space[34];
> +} mcontext_t;
i would add the aligned attribute here.
(it's more important to match the kernel layout than to
avoid c extensions in standard mode: loongarch c compilers
will all support the aligned attribute in system headers)
> +#endif
>
> struct sigaltstack {
> void *ss_sp;
> @@ -23,11 +36,10 @@ struct sigaltstack {
>
> typedef struct __ucontext
> {
> - unsigned long uc_flags;
> + unsigned long __uc_flags;
> struct __ucontext *uc_link;
> stack_t uc_stack;
> sigset_t uc_sigmask;
> - long __uc_pad;
> mcontext_t uc_mcontext;
> } ucontext_t;
looks good.
(the only issue is if some code uses uc_flags in an
arch independent way. i don't know if there is any
use for it on linux. but we can fix that later on
both glibc and musl side if it comes up.)
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-04-18 9:38 ` Szabolcs Nagy
@ 2023-04-18 10:47 ` Szabolcs Nagy
2023-04-18 11:32 ` 王洪亮
1 sibling, 0 replies; 35+ messages in thread
From: Szabolcs Nagy @ 2023-04-18 10:47 UTC (permalink / raw)
To: 王洪亮, musl
* Szabolcs Nagy <nsz@port70.net> [2023-04-18 11:38:44 +0200]:
> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
> > +typedef struct {
> > + unsigned long __pc;
> > + unsigned long __gregs[32];
> > + unsigned int __flags;
> > + unsigned long __extcontext[] __attribute__((__aligned__(16)));
> > } mcontext_t;
>
> i would use the same struct tag as glibc so
>
> typedef struct mcontext_t { ...
>
> (we don't need c++ abi compat with glibc, but
> it's nicer to be consistent)
sorry this is wrong, c++ abi is same for
typedef struct foo {} foo;
and
typedef struct {} foo;
so we don't need to change the code to match glibc:
untagged struct types use the typename for mangling
so it's mcontext_t either way.
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-04-18 9:38 ` Szabolcs Nagy
2023-04-18 10:47 ` Szabolcs Nagy
@ 2023-04-18 11:32 ` 王洪亮
2023-05-10 3:36 ` 王洪亮
1 sibling, 1 reply; 35+ messages in thread
From: 王洪亮 @ 2023-04-18 11:32 UTC (permalink / raw)
To: musl, Szabolcs Nagy
在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
>> +++ b/arch/loongarch64/bits/signal.h
>> @@ -6,14 +6,27 @@
>> #define SIGSTKSZ 16384
>> #endif
>>
>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>> typedef unsigned long greg_t, gregset_t[32];
>>
>> -typedef struct sigcontext {
>> +struct sigcontext {
>> unsigned long sc_pc;
>> - gregset_t sc_regs;
>> - unsigned int sc_flags;
>> - unsigned long sc_extcontext[];
>> + unsigned long sc_regs[32];
>> + unsigned int sc_flags;
>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
>> +};
> this looks good. (i don't know if this is really
> needed in signal.h, but other targets have it too)
>
>> +
>> +typedef struct {
>> + unsigned long __pc;
>> + unsigned long __gregs[32];
>> + unsigned int __flags;
>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
>> } mcontext_t;
> i would use the same struct tag as glibc so
>
> typedef struct mcontext_t { ...
>
> (we don't need c++ abi compat with glibc, but
> it's nicer to be consistent)
>
>> +#else
>> +typedef struct {
>> + unsigned long __space[34];
>> +} mcontext_t;
> i would add the aligned attribute here.
>
> (it's more important to match the kernel layout than to
> avoid c extensions in standard mode: loongarch c compilers
> will all support the aligned attribute in system headers)
I understand there is no need for me to submit modifications,
you help me modify it directly,right?
>> +#endif
>>
>> struct sigaltstack {
>> void *ss_sp;
>> @@ -23,11 +36,10 @@ struct sigaltstack {
>>
>> typedef struct __ucontext
>> {
>> - unsigned long uc_flags;
>> + unsigned long __uc_flags;
>> struct __ucontext *uc_link;
>> stack_t uc_stack;
>> sigset_t uc_sigmask;
>> - long __uc_pad;
>> mcontext_t uc_mcontext;
>> } ucontext_t;
> looks good.
>
> (the only issue is if some code uses uc_flags in an
> arch independent way. i don't know if there is any
> use for it on linux. but we can fix that later on
> both glibc and musl side if it comes up.)
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-04-18 11:32 ` 王洪亮
@ 2023-05-10 3:36 ` 王洪亮
2023-06-01 12:44 ` wanghongliang
0 siblings, 1 reply; 35+ messages in thread
From: 王洪亮 @ 2023-05-10 3:36 UTC (permalink / raw)
To: musl
Hi, Rich
Is there anything else that needs to be modified in
0001-add-loongarch64-port-v7.patch?
在 2023/4/18 下午7:32, 王洪亮 写道:
>
> 在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
>> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
>>> +++ b/arch/loongarch64/bits/signal.h
>>> @@ -6,14 +6,27 @@
>>> #define SIGSTKSZ 16384
>>> #endif
>>>
>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>> typedef unsigned long greg_t, gregset_t[32];
>>>
>>> -typedef struct sigcontext {
>>> +struct sigcontext {
>>> unsigned long sc_pc;
>>> - gregset_t sc_regs;
>>> - unsigned int sc_flags;
>>> - unsigned long sc_extcontext[];
>>> + unsigned long sc_regs[32];
>>> + unsigned int sc_flags;
>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
>>> +};
>> this looks good. (i don't know if this is really
>> needed in signal.h, but other targets have it too)
>>
>>> +
>>> +typedef struct {
>>> + unsigned long __pc;
>>> + unsigned long __gregs[32];
>>> + unsigned int __flags;
>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
>>> } mcontext_t;
>> i would use the same struct tag as glibc so
>>
>> typedef struct mcontext_t { ...
>>
>> (we don't need c++ abi compat with glibc, but
>> it's nicer to be consistent)
>>
>>> +#else
>>> +typedef struct {
>>> + unsigned long __space[34];
>>> +} mcontext_t;
>> i would add the aligned attribute here.
>>
>> (it's more important to match the kernel layout than to
>> avoid c extensions in standard mode: loongarch c compilers
>> will all support the aligned attribute in system headers)
> I understand there is no need for me to submit modifications,
> you help me modify it directly,right?
>>> +#endif
>>>
>>> struct sigaltstack {
>>> void *ss_sp;
>>> @@ -23,11 +36,10 @@ struct sigaltstack {
>>>
>>> typedef struct __ucontext
>>> {
>>> - unsigned long uc_flags;
>>> + unsigned long __uc_flags;
>>> struct __ucontext *uc_link;
>>> stack_t uc_stack;
>>> sigset_t uc_sigmask;
>>> - long __uc_pad;
>>> mcontext_t uc_mcontext;
>>> } ucontext_t;
>> looks good.
>>
>> (the only issue is if some code uses uc_flags in an
>> arch independent way. i don't know if there is any
>> use for it on linux. but we can fix that later on
>> both glibc and musl side if it comes up.)
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-05-10 3:36 ` 王洪亮
@ 2023-06-01 12:44 ` wanghongliang
2023-06-25 3:43 ` Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: wanghongliang @ 2023-06-01 12:44 UTC (permalink / raw)
To: musl
Hi,Rich
Is there anything else that needs to be modified in
0001-add-loongarch64-port-v7.patch?
Looking forward to your reply.
在 2023/5/10 上午11:36, 王洪亮 写道:
> Hi, Rich
>
> Is there anything else that needs to be modified in
> 0001-add-loongarch64-port-v7.patch?
>
>
> 在 2023/4/18 下午7:32, 王洪亮 写道:
>>
>> 在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
>>> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
>>>> +++ b/arch/loongarch64/bits/signal.h
>>>> @@ -6,14 +6,27 @@
>>>> #define SIGSTKSZ 16384
>>>> #endif
>>>>
>>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>>> typedef unsigned long greg_t, gregset_t[32];
>>>>
>>>> -typedef struct sigcontext {
>>>> +struct sigcontext {
>>>> unsigned long sc_pc;
>>>> - gregset_t sc_regs;
>>>> - unsigned int sc_flags;
>>>> - unsigned long sc_extcontext[];
>>>> + unsigned long sc_regs[32];
>>>> + unsigned int sc_flags;
>>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
>>>> +};
>>> this looks good. (i don't know if this is really
>>> needed in signal.h, but other targets have it too)
>>>
>>>> +
>>>> +typedef struct {
>>>> + unsigned long __pc;
>>>> + unsigned long __gregs[32];
>>>> + unsigned int __flags;
>>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
>>>> } mcontext_t;
>>> i would use the same struct tag as glibc so
>>>
>>> typedef struct mcontext_t { ...
>>>
>>> (we don't need c++ abi compat with glibc, but
>>> it's nicer to be consistent)
>>>
>>>> +#else
>>>> +typedef struct {
>>>> + unsigned long __space[34];
>>>> +} mcontext_t;
>>> i would add the aligned attribute here.
>>>
>>> (it's more important to match the kernel layout than to
>>> avoid c extensions in standard mode: loongarch c compilers
>>> will all support the aligned attribute in system headers)
>> I understand there is no need for me to submit modifications,
>> you help me modify it directly,right?
>>>> +#endif
>>>>
>>>> struct sigaltstack {
>>>> void *ss_sp;
>>>> @@ -23,11 +36,10 @@ struct sigaltstack {
>>>>
>>>> typedef struct __ucontext
>>>> {
>>>> - unsigned long uc_flags;
>>>> + unsigned long __uc_flags;
>>>> struct __ucontext *uc_link;
>>>> stack_t uc_stack;
>>>> sigset_t uc_sigmask;
>>>> - long __uc_pad;
>>>> mcontext_t uc_mcontext;
>>>> } ucontext_t;
>>> looks good.
>>>
>>> (the only issue is if some code uses uc_flags in an
>>> arch independent way. i don't know if there is any
>>> use for it on linux. but we can fix that later on
>>> both glibc and musl side if it comes up.)
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-06-01 12:44 ` wanghongliang
@ 2023-06-25 3:43 ` Hongliang Wang
2023-07-19 6:55 ` Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Hongliang Wang @ 2023-06-25 3:43 UTC (permalink / raw)
To: musl
Friendly ping.
在 2023/6/1 下午8:44, wanghongliang 写道:
> Hi,Rich
>
> Is there anything else that needs to be modified in
> 0001-add-loongarch64-port-v7.patch?
>
> Looking forward to your reply.
>
>
> 在 2023/5/10 上午11:36, 王洪亮 写道:
>> Hi, Rich
>>
>> Is there anything else that needs to be modified in
>> 0001-add-loongarch64-port-v7.patch?
>>
>>
>> 在 2023/4/18 下午7:32, 王洪亮 写道:
>>>
>>> 在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
>>>> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
>>>>> +++ b/arch/loongarch64/bits/signal.h
>>>>> @@ -6,14 +6,27 @@
>>>>> #define SIGSTKSZ 16384
>>>>> #endif
>>>>>
>>>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>>>> typedef unsigned long greg_t, gregset_t[32];
>>>>>
>>>>> -typedef struct sigcontext {
>>>>> +struct sigcontext {
>>>>> unsigned long sc_pc;
>>>>> - gregset_t sc_regs;
>>>>> - unsigned int sc_flags;
>>>>> - unsigned long sc_extcontext[];
>>>>> + unsigned long sc_regs[32];
>>>>> + unsigned int sc_flags;
>>>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
>>>>> +};
>>>> this looks good. (i don't know if this is really
>>>> needed in signal.h, but other targets have it too)
>>>>
>>>>> +
>>>>> +typedef struct {
>>>>> + unsigned long __pc;
>>>>> + unsigned long __gregs[32];
>>>>> + unsigned int __flags;
>>>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
>>>>> } mcontext_t;
>>>> i would use the same struct tag as glibc so
>>>>
>>>> typedef struct mcontext_t { ...
>>>>
>>>> (we don't need c++ abi compat with glibc, but
>>>> it's nicer to be consistent)
>>>>
>>>>> +#else
>>>>> +typedef struct {
>>>>> + unsigned long __space[34];
>>>>> +} mcontext_t;
>>>> i would add the aligned attribute here.
>>>>
>>>> (it's more important to match the kernel layout than to
>>>> avoid c extensions in standard mode: loongarch c compilers
>>>> will all support the aligned attribute in system headers)
>>> I understand there is no need for me to submit modifications,
>>> you help me modify it directly,right?
>>>>> +#endif
>>>>>
>>>>> struct sigaltstack {
>>>>> void *ss_sp;
>>>>> @@ -23,11 +36,10 @@ struct sigaltstack {
>>>>>
>>>>> typedef struct __ucontext
>>>>> {
>>>>> - unsigned long uc_flags;
>>>>> + unsigned long __uc_flags;
>>>>> struct __ucontext *uc_link;
>>>>> stack_t uc_stack;
>>>>> sigset_t uc_sigmask;
>>>>> - long __uc_pad;
>>>>> mcontext_t uc_mcontext;
>>>>> } ucontext_t;
>>>> looks good.
>>>>
>>>> (the only issue is if some code uses uc_flags in an
>>>> arch independent way. i don't know if there is any
>>>> use for it on linux. but we can fix that later on
>>>> both glibc and musl side if it comes up.)
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-06-25 3:43 ` Hongliang Wang
@ 2023-07-19 6:55 ` Hongliang Wang
2023-08-05 6:18 ` 翟小娟
0 siblings, 1 reply; 35+ messages in thread
From: Hongliang Wang @ 2023-07-19 6:55 UTC (permalink / raw)
To: musl
Hi Rich,
I asked about the current situation of
0001-add-loongarch64-port-v7.patch in mailing list some times,
but I haven't received any response from you. We very hope that
LoongArch can be supported in musl as soon as possible and used
by more people. So we urgently want to know the current review
progress of this patch and what else do we need to do?
Thank you for your attention, We're looking forward to your
early reply.
Best wishes,
Hongliang Wang
在 2023/6/25 上午11:43, Hongliang Wang 写道:
>
> Friendly ping.
>
> 在 2023/6/1 下午8:44, wanghongliang 写道:
>> Hi,Rich
>>
>> Is there anything else that needs to be modified in
>> 0001-add-loongarch64-port-v7.patch?
>>
>> Looking forward to your reply.
>>
>>
>> 在 2023/5/10 上午11:36, 王洪亮 写道:
>>> Hi, Rich
>>>
>>> Is there anything else that needs to be modified in
>>> 0001-add-loongarch64-port-v7.patch?
>>>
>>>
>>> 在 2023/4/18 下午7:32, 王洪亮 写道:
>>>>
>>>> 在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
>>>>> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
>>>>>> +++ b/arch/loongarch64/bits/signal.h
>>>>>> @@ -6,14 +6,27 @@
>>>>>> #define SIGSTKSZ 16384
>>>>>> #endif
>>>>>>
>>>>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>>>>> typedef unsigned long greg_t, gregset_t[32];
>>>>>>
>>>>>> -typedef struct sigcontext {
>>>>>> +struct sigcontext {
>>>>>> unsigned long sc_pc;
>>>>>> - gregset_t sc_regs;
>>>>>> - unsigned int sc_flags;
>>>>>> - unsigned long sc_extcontext[];
>>>>>> + unsigned long sc_regs[32];
>>>>>> + unsigned int sc_flags;
>>>>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
>>>>>> +};
>>>>> this looks good. (i don't know if this is really
>>>>> needed in signal.h, but other targets have it too)
>>>>>
>>>>>> +
>>>>>> +typedef struct {
>>>>>> + unsigned long __pc;
>>>>>> + unsigned long __gregs[32];
>>>>>> + unsigned int __flags;
>>>>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
>>>>>> } mcontext_t;
>>>>> i would use the same struct tag as glibc so
>>>>>
>>>>> typedef struct mcontext_t { ...
>>>>>
>>>>> (we don't need c++ abi compat with glibc, but
>>>>> it's nicer to be consistent)
>>>>>
>>>>>> +#else
>>>>>> +typedef struct {
>>>>>> + unsigned long __space[34];
>>>>>> +} mcontext_t;
>>>>> i would add the aligned attribute here.
>>>>>
>>>>> (it's more important to match the kernel layout than to
>>>>> avoid c extensions in standard mode: loongarch c compilers
>>>>> will all support the aligned attribute in system headers)
>>>> I understand there is no need for me to submit modifications,
>>>> you help me modify it directly,right?
>>>>>> +#endif
>>>>>>
>>>>>> struct sigaltstack {
>>>>>> void *ss_sp;
>>>>>> @@ -23,11 +36,10 @@ struct sigaltstack {
>>>>>>
>>>>>> typedef struct __ucontext
>>>>>> {
>>>>>> - unsigned long uc_flags;
>>>>>> + unsigned long __uc_flags;
>>>>>> struct __ucontext *uc_link;
>>>>>> stack_t uc_stack;
>>>>>> sigset_t uc_sigmask;
>>>>>> - long __uc_pad;
>>>>>> mcontext_t uc_mcontext;
>>>>>> } ucontext_t;
>>>>> looks good.
>>>>>
>>>>> (the only issue is if some code uses uc_flags in an
>>>>> arch independent way. i don't know if there is any
>>>>> use for it on linux. but we can fix that later on
>>>>> both glibc and musl side if it comes up.)
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: Re: [musl] add loongarch64 port v7.
2023-07-19 6:55 ` Hongliang Wang
@ 2023-08-05 6:18 ` 翟小娟
2023-08-05 15:43 ` Rich Felker
0 siblings, 1 reply; 35+ messages in thread
From: 翟小娟 @ 2023-08-05 6:18 UTC (permalink / raw)
To: musl
We are currently working on bringing loongarch support to the alpine community. Alpine depends on musl, and Alpine and its users are waiting for musl to support loongarch. This patch seems to be a long time ago, we hope to know the review status of this patch.
> -----原始邮件-----
> 发件人: "Hongliang Wang" <wanghongliang@loongson.cn>
> 发送时间:2023-07-19 14:55:31 (星期三)
> 收件人: musl@lists.openwall.com
> 主题: Re: [musl] add loongarch64 port v7.
>
> Hi Rich,
>
> I asked about the current situation of
> 0001-add-loongarch64-port-v7.patch in mailing list some times,
> but I haven't received any response from you. We very hope that
> LoongArch can be supported in musl as soon as possible and used
> by more people. So we urgently want to know the current review
> progress of this patch and what else do we need to do?
>
> Thank you for your attention, We're looking forward to your
> early reply.
>
> Best wishes,
> Hongliang Wang
>
>
> 在 2023/6/25 上午11:43, Hongliang Wang 写道:
> >
> > Friendly ping.
> >
> > 在 2023/6/1 下午8:44, wanghongliang 写道:
> >> Hi,Rich
> >>
> >> Is there anything else that needs to be modified in
> >> 0001-add-loongarch64-port-v7.patch?
> >>
> >> Looking forward to your reply.
> >>
> >>
> >> 在 2023/5/10 上午11:36, 王洪亮 写道:
> >>> Hi, Rich
> >>>
> >>> Is there anything else that needs to be modified in
> >>> 0001-add-loongarch64-port-v7.patch?
> >>>
> >>>
> >>> 在 2023/4/18 下午7:32, 王洪亮 写道:
> >>>>
> >>>> 在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
> >>>>> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
> >>>>>> +++ b/arch/loongarch64/bits/signal.h
> >>>>>> @@ -6,14 +6,27 @@
> >>>>>> #define SIGSTKSZ 16384
> >>>>>> #endif
> >>>>>>
> >>>>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> >>>>>> typedef unsigned long greg_t, gregset_t[32];
> >>>>>>
> >>>>>> -typedef struct sigcontext {
> >>>>>> +struct sigcontext {
> >>>>>> unsigned long sc_pc;
> >>>>>> - gregset_t sc_regs;
> >>>>>> - unsigned int sc_flags;
> >>>>>> - unsigned long sc_extcontext[];
> >>>>>> + unsigned long sc_regs[32];
> >>>>>> + unsigned int sc_flags;
> >>>>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
> >>>>>> +};
> >>>>> this looks good. (i don't know if this is really
> >>>>> needed in signal.h, but other targets have it too)
> >>>>>
> >>>>>> +
> >>>>>> +typedef struct {
> >>>>>> + unsigned long __pc;
> >>>>>> + unsigned long __gregs[32];
> >>>>>> + unsigned int __flags;
> >>>>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
> >>>>>> } mcontext_t;
> >>>>> i would use the same struct tag as glibc so
> >>>>>
> >>>>> typedef struct mcontext_t { ...
> >>>>>
> >>>>> (we don't need c++ abi compat with glibc, but
> >>>>> it's nicer to be consistent)
> >>>>>
> >>>>>> +#else
> >>>>>> +typedef struct {
> >>>>>> + unsigned long __space[34];
> >>>>>> +} mcontext_t;
> >>>>> i would add the aligned attribute here.
> >>>>>
> >>>>> (it's more important to match the kernel layout than to
> >>>>> avoid c extensions in standard mode: loongarch c compilers
> >>>>> will all support the aligned attribute in system headers)
> >>>> I understand there is no need for me to submit modifications,
> >>>> you help me modify it directly,right?
> >>>>>> +#endif
> >>>>>>
> >>>>>> struct sigaltstack {
> >>>>>> void *ss_sp;
> >>>>>> @@ -23,11 +36,10 @@ struct sigaltstack {
> >>>>>>
> >>>>>> typedef struct __ucontext
> >>>>>> {
> >>>>>> - unsigned long uc_flags;
> >>>>>> + unsigned long __uc_flags;
> >>>>>> struct __ucontext *uc_link;
> >>>>>> stack_t uc_stack;
> >>>>>> sigset_t uc_sigmask;
> >>>>>> - long __uc_pad;
> >>>>>> mcontext_t uc_mcontext;
> >>>>>> } ucontext_t;
> >>>>> looks good.
> >>>>>
> >>>>> (the only issue is if some code uses uc_flags in an
> >>>>> arch independent way. i don't know if there is any
> >>>>> use for it on linux. but we can fix that later on
> >>>>> both glibc and musl side if it comes up.)
本邮件及其附件含有龙芯中科的商业秘密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息。如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。
This email and its attachments contain confidential information from Loongson Technology , which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: Re: [musl] add loongarch64 port v7.
2023-08-05 6:18 ` 翟小娟
@ 2023-08-05 15:43 ` Rich Felker
2023-08-13 1:41 ` Rich Felker
0 siblings, 1 reply; 35+ messages in thread
From: Rich Felker @ 2023-08-05 15:43 UTC (permalink / raw)
To: 翟小娟; +Cc: musl
On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> We are currently working on bringing loongarch support to the alpine
> community. Alpine depends on musl, and Alpine and its users are
> waiting for musl to support loongarch. This patch seems to be a long
> time ago, we hope to know the review status of this patch.
Last time I set out to look at it, I hit that the exact patch I had
previously reviewed and tentatively okayed wasn't stored anywhere
permanent. I realize this has taken quite a while, and now there is a
patch on the list, so this coming week I will go back and review the
diff of that against the previous posted version and mailing list
comments. As long as everything matches up, I expect to commit it.
Thanks for checking back in on this, and sorry it's taken so long.
Rich
> > -----原始邮件-----
> > 发件人: "Hongliang Wang" <wanghongliang@loongson.cn>
> > 发送时间:2023-07-19 14:55:31 (星期三)
> > 收件人: musl@lists.openwall.com
> > 主题: Re: [musl] add loongarch64 port v7.
> >
> > Hi Rich,
> >
> > I asked about the current situation of
> > 0001-add-loongarch64-port-v7.patch in mailing list some times,
> > but I haven't received any response from you. We very hope that
> > LoongArch can be supported in musl as soon as possible and used
> > by more people. So we urgently want to know the current review
> > progress of this patch and what else do we need to do?
> >
> > Thank you for your attention, We're looking forward to your
> > early reply.
> >
> > Best wishes,
> > Hongliang Wang
> >
> >
> > 在 2023/6/25 上午11:43, Hongliang Wang 写道:
> > >
> > > Friendly ping.
> > >
> > > 在 2023/6/1 下午8:44, wanghongliang 写道:
> > >> Hi,Rich
> > >>
> > >> Is there anything else that needs to be modified in
> > >> 0001-add-loongarch64-port-v7.patch?
> > >>
> > >> Looking forward to your reply.
> > >>
> > >>
> > >> 在 2023/5/10 上午11:36, 王洪亮 写道:
> > >>> Hi, Rich
> > >>>
> > >>> Is there anything else that needs to be modified in
> > >>> 0001-add-loongarch64-port-v7.patch?
> > >>>
> > >>>
> > >>> 在 2023/4/18 下午7:32, 王洪亮 写道:
> > >>>>
> > >>>> 在 2023/4/18 下午5:38, Szabolcs Nagy 写道:
> > >>>>> * 王洪亮 <wanghongliang@loongson.cn> [2023-04-18 09:28:49 +0800]:
> > >>>>>> +++ b/arch/loongarch64/bits/signal.h
> > >>>>>> @@ -6,14 +6,27 @@
> > >>>>>> #define SIGSTKSZ 16384
> > >>>>>> #endif
> > >>>>>>
> > >>>>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> > >>>>>> typedef unsigned long greg_t, gregset_t[32];
> > >>>>>>
> > >>>>>> -typedef struct sigcontext {
> > >>>>>> +struct sigcontext {
> > >>>>>> unsigned long sc_pc;
> > >>>>>> - gregset_t sc_regs;
> > >>>>>> - unsigned int sc_flags;
> > >>>>>> - unsigned long sc_extcontext[];
> > >>>>>> + unsigned long sc_regs[32];
> > >>>>>> + unsigned int sc_flags;
> > >>>>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
> > >>>>>> +};
> > >>>>> this looks good. (i don't know if this is really
> > >>>>> needed in signal.h, but other targets have it too)
> > >>>>>
> > >>>>>> +
> > >>>>>> +typedef struct {
> > >>>>>> + unsigned long __pc;
> > >>>>>> + unsigned long __gregs[32];
> > >>>>>> + unsigned int __flags;
> > >>>>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
> > >>>>>> } mcontext_t;
> > >>>>> i would use the same struct tag as glibc so
> > >>>>>
> > >>>>> typedef struct mcontext_t { ...
> > >>>>>
> > >>>>> (we don't need c++ abi compat with glibc, but
> > >>>>> it's nicer to be consistent)
> > >>>>>
> > >>>>>> +#else
> > >>>>>> +typedef struct {
> > >>>>>> + unsigned long __space[34];
> > >>>>>> +} mcontext_t;
> > >>>>> i would add the aligned attribute here.
> > >>>>>
> > >>>>> (it's more important to match the kernel layout than to
> > >>>>> avoid c extensions in standard mode: loongarch c compilers
> > >>>>> will all support the aligned attribute in system headers)
> > >>>> I understand there is no need for me to submit modifications,
> > >>>> you help me modify it directly,right?
> > >>>>>> +#endif
> > >>>>>>
> > >>>>>> struct sigaltstack {
> > >>>>>> void *ss_sp;
> > >>>>>> @@ -23,11 +36,10 @@ struct sigaltstack {
> > >>>>>>
> > >>>>>> typedef struct __ucontext
> > >>>>>> {
> > >>>>>> - unsigned long uc_flags;
> > >>>>>> + unsigned long __uc_flags;
> > >>>>>> struct __ucontext *uc_link;
> > >>>>>> stack_t uc_stack;
> > >>>>>> sigset_t uc_sigmask;
> > >>>>>> - long __uc_pad;
> > >>>>>> mcontext_t uc_mcontext;
> > >>>>>> } ucontext_t;
> > >>>>> looks good.
> > >>>>>
> > >>>>> (the only issue is if some code uses uc_flags in an
> > >>>>> arch independent way. i don't know if there is any
> > >>>>> use for it on linux. but we can fix that later on
> > >>>>> both glibc and musl side if it comes up.)
>
>
> 本邮件及其附件含有龙芯中科的商业秘密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息。如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。
> This email and its attachments contain confidential information from Loongson Technology , which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: Re: [musl] add loongarch64 port v7.
2023-08-05 15:43 ` Rich Felker
@ 2023-08-13 1:41 ` Rich Felker
2023-08-15 9:24 ` Hongliang Wang
[not found] ` <99d954ca-faee-2cac-97af-7fc2ecdb9a89@loongson.cn>
0 siblings, 2 replies; 35+ messages in thread
From: Rich Felker @ 2023-08-13 1:41 UTC (permalink / raw)
To: 翟小娟; +Cc: musl
On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> > We are currently working on bringing loongarch support to the alpine
> > community. Alpine depends on musl, and Alpine and its users are
> > waiting for musl to support loongarch. This patch seems to be a long
> > time ago, we hope to know the review status of this patch.
>
> Last time I set out to look at it, I hit that the exact patch I had
> previously reviewed and tentatively okayed wasn't stored anywhere
> permanent. I realize this has taken quite a while, and now there is a
> patch on the list, so this coming week I will go back and review the
> diff of that against the previous posted version and mailing list
> comments. As long as everything matches up, I expect to commit it.
>
> Thanks for checking back in on this, and sorry it's taken so long.
OK, I'm looking at this now as the diffs between v5 and v6 (which I
theoretically reviewed before, but the exact v6 I looked at did not
exist in permanent form) and between v6 and v7.
v5->v6:
> -+#define __BYTE_ORDER 1234
> ++#define __BYTE_ORDER __LITTLE_ENDIAN
This is gratuitous, mismatches what is done on other archs, and is
less safe.
> -+TYPEDEF unsigned nlink_t;
> ++TYPEDEF unsigned int nlink_t;
Gratuitous and in opposite direction of coding style used elsewhere in
musl. There are a few other instances of this too.
> -+ register uintptr_t tp __asm__("tp");
> -+ __asm__ ("" : "=r" (tp) );
> ++ uintptr_t tp;
> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> + return tp;
Not clear what the motivation is here. Is it working around a compiler
bug? The original form was more optimal.
> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> -+
> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> -+ ".hidden " #sym "\n" \
> -+ ".align 8 \n" \
> -+ " la.local $t1, "#sym" \n" \
> -+ " move %0, $t1 \n" \
> -+ : "=r"(*(fp)) : : "memory" )
> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
Not clear why this was changed. It was never discussed afaik. It looks
somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
default definition.
It also looks like v5->v6 rewrote sigsetjmp.
v6->v7:
sigcontext/mcontext_t change mostly makes sense, but the
namespace-safe and full mcontext_t differ in their use of the aligned
attribute and it's not clear that the attribute is needed (since the
offset is naturally aligned and any instance of the object is produced
by the kernel, not by userspace).
> -+ long __uc_pad;
This change to ucontext_t actually makes the struct ABI-incompatible
in the namespace-safe version without the alignment attribute. IIRC I
explicitly requested the explicit padding field to avoid this kind of
footgun. Removing it does not seem like a good idea.
In stat.h:
> -+ unsigned long __pad;
> ++ unsigned long __pad1;
This is gratuitous and makes the definition gratuitously mismatch what
will become the "generic" version of bits/stat.h. There is no contract
for applications to be able to access these padding fields by name, so
no motivation to make their names match glibc's names or the kernel's.
In fenv.S:
> ++#ifdef __clang__
> ++#define FCSR $fcsr0
> ++#else
> ++#define FCSR $r0
> ++#endif
It's not clear to me what's going on here. Is there a clang
incompatibility in the assembler language you're working around? Or
what? If so that seems like a tooling bug that should be fixed.
Otherwise, everything looks as expected, I think. I'm okay with making
any fixups for merging rather than throwing this back on your team for
more revisions, but can you please follow up and clarify the above?
Rich
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-08-13 1:41 ` Rich Felker
@ 2023-08-15 9:24 ` Hongliang Wang
2023-08-15 9:32 ` alice
2023-08-25 9:27 ` 翟小娟
[not found] ` <99d954ca-faee-2cac-97af-7fc2ecdb9a89@loongson.cn>
1 sibling, 2 replies; 35+ messages in thread
From: Hongliang Wang @ 2023-08-15 9:24 UTC (permalink / raw)
To: musl
在 2023/8/13 上午9:41, Rich Felker 写道:
> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>> We are currently working on bringing loongarch support to the alpine
>>> community. Alpine depends on musl, and Alpine and its users are
>>> waiting for musl to support loongarch. This patch seems to be a long
>>> time ago, we hope to know the review status of this patch.
>>
>> Last time I set out to look at it, I hit that the exact patch I had
>> previously reviewed and tentatively okayed wasn't stored anywhere
>> permanent. I realize this has taken quite a while, and now there is a
>> patch on the list, so this coming week I will go back and review the
>> diff of that against the previous posted version and mailing list
>> comments. As long as everything matches up, I expect to commit it.
>>
>> Thanks for checking back in on this, and sorry it's taken so long.
>
> OK, I'm looking at this now as the diffs between v5 and v6 (which I
> theoretically reviewed before, but the exact v6 I looked at did not
> exist in permanent form) and between v6 and v7.
>
> v5->v6:
>
>> -+#define __BYTE_ORDER 1234
>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>
> This is gratuitous, mismatches what is done on other archs, and is
> less safe.
>
The modification is based on the following review suggestion(
WANG Xuerui <i@xen0n.name> reviewed in
https://www.openwall.com/lists/musl/2022/10/12/1):
`#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
with other arches.
>> -+TYPEDEF unsigned nlink_t;
>> ++TYPEDEF unsigned int nlink_t;
>
> Gratuitous and in opposite direction of coding style used elsewhere in
> musl. There are a few other instances of this too.
>
Based on the following review question(WANG Xuerui <i@xen0n.name>
reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
`unsigned int`? Same for other bare `unsigned` usages.
I fixed it to a explicit definition.
>> -+ register uintptr_t tp __asm__("tp");
>> -+ __asm__ ("" : "=r" (tp) );
>> ++ uintptr_t tp;
>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>> + return tp;
>
> Not clear what the motivation is here. Is it working around a compiler
> bug? The original form was more optimal.
>
The modification is based on the following review suggestion(
WANG Xuerui <i@xen0n.name> reviewed in
https://www.openwall.com/lists/musl/2022/10/12/1):
While the current approach works, it's a bit fragile [1], and
the simple and plain riscv version works too:
uintptr_t tp;
__asm__ ("move %0, $tp" : "=r"(tp));
[1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>> -+
>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>> -+ ".hidden " #sym "\n" \
>> -+ ".align 8 \n" \
>> -+ " la.local $t1, "#sym" \n" \
>> -+ " move %0, $t1 \n" \
>> -+ : "=r"(*(fp)) : : "memory" )
>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>
> Not clear why this was changed. It was never discussed afaik. It looks
> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
> default definition.
>
Based on the following review question(
WANG Xuerui <i@xen0n.name> reviewed
in https://www.openwall.com/lists/musl/2022/10/12/1):
Does the generic version residing in ldso/dlstart.c not work?
I found the code logic is consistent with the generic version, So
I removed the definition here and replaced it with generic version.
> It also looks like v5->v6 rewrote sigsetjmp.
>
Based on the following review question(
WANG Xuerui <i@xen0n.name> reviewed
in https://www.openwall.com/lists/musl/2022/10/12/1):
This is crazy complicated compared to the riscv port, why is the juggling
between a0/a1 and t5/t6 necessary?
I optimized the code implementations.
> v6->v7:
>
> sigcontext/mcontext_t change mostly makes sense, but the
> namespace-safe and full mcontext_t differ in their use of the aligned
> attribute and it's not clear that the attribute is needed (since the
> offset is naturally aligned and any instance of the object is produced
> by the kernel, not by userspace).
>
>> -+ long __uc_pad;
>
> This change to ucontext_t actually makes the struct ABI-incompatible
> in the namespace-safe version without the alignment attribute. IIRC I
> explicitly requested the explicit padding field to avoid this kind of
> footgun. Removing it does not seem like a good idea.
>
Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
Now, we added __attribute__((__aligned__(16))) to
uc_mcontext.__extcontext[],
this can ensure uc_mcontext is also 16 byte alignment. so __uc_pad is
not used.
Remove __uc_pad, from the point of struct layout, musl and kernel are
consistent. otherwise, I think it may bring a sense of inconsistency
between kernel and musl. Due to Loongarch is not merged into musl now,
Remove it no compatibility issues.
> In stat.h:
>
>> -+ unsigned long __pad;
>> ++ unsigned long __pad1;
>
> This is gratuitous and makes the definition gratuitously mismatch what
> will become the "generic" version of bits/stat.h. There is no contract
> for applications to be able to access these padding fields by name, so
> no motivation to make their names match glibc's names or the kernel's.
>
OK.
> In fenv.S:
>
>> ++#ifdef __clang__
>> ++#define FCSR $fcsr0
>> ++#else
>> ++#define FCSR $r0
>> ++#endif
>
> It's not clear to me what's going on here. Is there a clang
> incompatibility in the assembler language you're working around? Or
> what? If so that seems like a tooling bug that should be fixed.
>
The GNU assembler cannot correctly recognize $fcsr0, but the
LLVM IAS does not have this issue, so make a distinction.
This issue has been fixed in GNU assembler 2.41. but for compatible
with GNU assembler 2.40 and below, $r0 need reserved.
The linux kernel also has a similar distinction:
commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
Author: WANG Xuerui <git@xen0n.name>
Date: Thu Jun 29 20:58:43 2023 +0800
LoongArch: Prepare for assemblers with proper FCSR class support
The GNU assembler (as of 2.40) mis-treats FCSR operands as GPRs, but
the LLVM IAS does not. Probe for this and refer to FCSRs as"$fcsrNN"
if support is present.
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
> Otherwise, everything looks as expected, I think. I'm okay with making
> any fixups for merging rather than throwing this back on your team for
> more revisions, but can you please follow up and clarify the above?
>
> Rich
>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-08-15 9:24 ` Hongliang Wang
@ 2023-08-15 9:32 ` alice
2023-08-25 9:27 ` 翟小娟
1 sibling, 0 replies; 35+ messages in thread
From: alice @ 2023-08-15 9:32 UTC (permalink / raw)
To: musl
On Tue Aug 15, 2023 at 9:24 AM UTC, Hongliang Wang wrote:
>
> > In fenv.S:
> >
> >> ++#ifdef __clang__
> >> ++#define FCSR $fcsr0
> >> ++#else
> >> ++#define FCSR $r0
> >> ++#endif
> >
> > It's not clear to me what's going on here. Is there a clang
> > incompatibility in the assembler language you're working around? Or
> > what? If so that seems like a tooling bug that should be fixed.
> >
> The GNU assembler cannot correctly recognize $fcsr0, but the
> LLVM IAS does not have this issue, so make a distinction.
> This issue has been fixed in GNU assembler 2.41. but for compatible
> with GNU assembler 2.40 and below, $r0 need reserved.
>
> The linux kernel also has a similar distinction:
the kernel patch checks if the assembler supports fcsr, and then uses that, or
falls back to r.
in this case, you only check for ifdef clang- which means even with binutils
2.41, it will not use fcsr (__clang__ is not defined). don't you need to perform
a similar test, so clang or binutils>=2.41 both use the top path? most likely,
you need a ./configure test.
>
> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> Author: WANG Xuerui <git@xen0n.name>
> Date: Thu Jun 29 20:58:43 2023 +0800
>
> LoongArch: Prepare for assemblers with proper FCSR class support
>
> The GNU assembler (as of 2.40) mis-treats FCSR operands as GPRs, but
> the LLVM IAS does not. Probe for this and refer to FCSRs as"$fcsrNN"
> if support is present.
>
> Signed-off-by: WANG Xuerui <git@xen0n.name>
> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: Re: [musl] add loongarch64 port v7.
2023-08-15 9:24 ` Hongliang Wang
2023-08-15 9:32 ` alice
@ 2023-08-25 9:27 ` 翟小娟
1 sibling, 0 replies; 35+ messages in thread
From: 翟小娟 @ 2023-08-25 9:27 UTC (permalink / raw)
To: musl
Hi,
Regarding the questions you pointed out, We have explained the
reasons for modifications. Do you have different suggestions?
Do we need to make further modifications with certain issues?
Best wishes,
Xiaojuan Zhai
> -----原始邮件-----
> 发件人: "Hongliang Wang" <wanghongliang@loongson.cn>
> 发送时间:2023-08-15 17:24:30 (星期二)
> 收件人: musl@lists.openwall.com
> 主题: Re: [musl] add loongarch64 port v7.
>
>
>
> 在 2023/8/13 上午9:41, Rich Felker 写道:
> > On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
> >> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> >>> We are currently working on bringing loongarch support to the alpine
> >>> community. Alpine depends on musl, and Alpine and its users are
> >>> waiting for musl to support loongarch. This patch seems to be a long
> >>> time ago, we hope to know the review status of this patch.
> >>
> >> Last time I set out to look at it, I hit that the exact patch I had
> >> previously reviewed and tentatively okayed wasn't stored anywhere
> >> permanent. I realize this has taken quite a while, and now there is a
> >> patch on the list, so this coming week I will go back and review the
> >> diff of that against the previous posted version and mailing list
> >> comments. As long as everything matches up, I expect to commit it.
> >>
> >> Thanks for checking back in on this, and sorry it's taken so long.
> >
> > OK, I'm looking at this now as the diffs between v5 and v6 (which I
> > theoretically reviewed before, but the exact v6 I looked at did not
> > exist in permanent form) and between v6 and v7.
> >
> > v5->v6:
> >
> >> -+#define __BYTE_ORDER 1234
> >> ++#define __BYTE_ORDER __LITTLE_ENDIAN
> >
> > This is gratuitous, mismatches what is done on other archs, and is
> > less safe.
> >
> The modification is based on the following review suggestion(
> WANG Xuerui <i@xen0n.name> reviewed in
> https://www.openwall.com/lists/musl/2022/10/12/1):
>
> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
> with other arches.
>
> >> -+TYPEDEF unsigned nlink_t;
> >> ++TYPEDEF unsigned int nlink_t;
> >
> > Gratuitous and in opposite direction of coding style used elsewhere in
> > musl. There are a few other instances of this too.
> >
> Based on the following review question(WANG Xuerui <i@xen0n.name>
> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>
> `unsigned int`? Same for other bare `unsigned` usages.
>
> I fixed it to a explicit definition.
>
> >> -+ register uintptr_t tp __asm__("tp");
> >> -+ __asm__ ("" : "=r" (tp) );
> >> ++ uintptr_t tp;
> >> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> >> + return tp;
> >
> > Not clear what the motivation is here. Is it working around a compiler
> > bug? The original form was more optimal.
> >
> The modification is based on the following review suggestion(
> WANG Xuerui <i@xen0n.name> reviewed in
> https://www.openwall.com/lists/musl/2022/10/12/1):
>
> While the current approach works, it's a bit fragile [1], and
> the simple and plain riscv version works too:
>
> uintptr_t tp;
> __asm__ ("move %0, $tp" : "=r"(tp));
>
> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>
> >> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> >> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> >> -+
> >> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> >> -+ ".hidden " #sym "\n" \
> >> -+ ".align 8 \n" \
> >> -+ " la.local $t1, "#sym" \n" \
> >> -+ " move %0, $t1 \n" \
> >> -+ : "=r"(*(fp)) : : "memory" )
> >> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> >
> > Not clear why this was changed. It was never discussed afaik. It looks
> > somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
> > default definition.
> >
> Based on the following review question(
> WANG Xuerui <i@xen0n.name> reviewed
> in https://www.openwall.com/lists/musl/2022/10/12/1):
>
> Does the generic version residing in ldso/dlstart.c not work?
>
> I found the code logic is consistent with the generic version, So
> I removed the definition here and replaced it with generic version.
>
> > It also looks like v5->v6 rewrote sigsetjmp.
> >
> Based on the following review question(
> WANG Xuerui <i@xen0n.name> reviewed
> in https://www.openwall.com/lists/musl/2022/10/12/1):
>
> This is crazy complicated compared to the riscv port, why is the juggling
> between a0/a1 and t5/t6 necessary?
>
> I optimized the code implementations.
>
> > v6->v7:
> >
> > sigcontext/mcontext_t change mostly makes sense, but the
> > namespace-safe and full mcontext_t differ in their use of the aligned
> > attribute and it's not clear that the attribute is needed (since the
> > offset is naturally aligned and any instance of the object is produced
> > by the kernel, not by userspace).
> >
> >> -+ long __uc_pad;
> >
> > This change to ucontext_t actually makes the struct ABI-incompatible
> > in the namespace-safe version without the alignment attribute. IIRC I
> > explicitly requested the explicit padding field to avoid this kind of
> > footgun. Removing it does not seem like a good idea.
> >
> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
> Now, we added __attribute__((__aligned__(16))) to
> uc_mcontext.__extcontext[],
> this can ensure uc_mcontext is also 16 byte alignment. so __uc_pad is
> not used.
>
> Remove __uc_pad, from the point of struct layout, musl and kernel are
> consistent. otherwise, I think it may bring a sense of inconsistency
> between kernel and musl. Due to Loongarch is not merged into musl now,
> Remove it no compatibility issues.
>
> > In stat.h:
> >
> >> -+ unsigned long __pad;
> >> ++ unsigned long __pad1;
> >
> > This is gratuitous and makes the definition gratuitously mismatch what
> > will become the "generic" version of bits/stat.h. There is no contract
> > for applications to be able to access these padding fields by name, so
> > no motivation to make their names match glibc's names or the kernel's.
> >
> OK.
>
> > In fenv.S:
> >
> >> ++#ifdef __clang__
> >> ++#define FCSR $fcsr0
> >> ++#else
> >> ++#define FCSR $r0
> >> ++#endif
> >
> > It's not clear to me what's going on here. Is there a clang
> > incompatibility in the assembler language you're working around? Or
> > what? If so that seems like a tooling bug that should be fixed.
> >
> The GNU assembler cannot correctly recognize $fcsr0, but the
> LLVM IAS does not have this issue, so make a distinction.
> This issue has been fixed in GNU assembler 2.41. but for compatible
> with GNU assembler 2.40 and below, $r0 need reserved.
>
> The linux kernel also has a similar distinction:
>
> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> Author: WANG Xuerui <git@xen0n.name>
> Date: Thu Jun 29 20:58:43 2023 +0800
>
> LoongArch: Prepare for assemblers with proper FCSR class support
>
> The GNU assembler (as of 2.40) mis-treats FCSR operands as GPRs, but
> the LLVM IAS does not. Probe for this and refer to FCSRs as"$fcsrNN"
> if support is present.
>
> Signed-off-by: WANG Xuerui <git@xen0n.name>
> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>
> > Otherwise, everything looks as expected, I think. I'm okay with making
> > any fixups for merging rather than throwing this back on your team for
> > more revisions, but can you please follow up and clarify the above?
> >
> > Rich
> >
本邮件及其附件含有龙芯中科的商业秘密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息。如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。
This email and its attachments contain confidential information from Loongson Technology , which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
[not found] ` <99d954ca-faee-2cac-97af-7fc2ecdb9a89@loongson.cn>
@ 2023-09-20 7:45 ` Jianmin Lv
2023-09-20 13:16 ` Szabolcs Nagy
0 siblings, 1 reply; 35+ messages in thread
From: Jianmin Lv @ 2023-09-20 7:45 UTC (permalink / raw)
To: musl; +Cc: Hongliang Wang
Hi, Rich
Sorry to bother you, but I just want to know if there is any progress on
this, because Alpine is blocking by this patch for a long time. As
Hongliang has explained questions you mentioned one by one, if any
question need to be discussed, please point them out, so that the patch
can be handled further.
Thanks very much!
Jianmin
On 2023/8/15 下午4:17, Hongliang Wang wrote:
>
> 在 2023/8/13 上午9:41, Rich Felker 写道:
>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>> We are currently working on bringing loongarch support to the alpine
>>>> community. Alpine depends on musl, and Alpine and its users are
>>>> waiting for musl to support loongarch. This patch seems to be a long
>>>> time ago, we hope to know the review status of this patch.
>>>
>>> Last time I set out to look at it, I hit that the exact patch I had
>>> previously reviewed and tentatively okayed wasn't stored anywhere
>>> permanent. I realize this has taken quite a while, and now there is a
>>> patch on the list, so this coming week I will go back and review the
>>> diff of that against the previous posted version and mailing list
>>> comments. As long as everything matches up, I expect to commit it.
>>>
>>> Thanks for checking back in on this, and sorry it's taken so long.
>>
>> OK, I'm looking at this now as the diffs between v5 and v6 (which I
>> theoretically reviewed before, but the exact v6 I looked at did not
>> exist in permanent form) and between v6 and v7.
>>
>> v5->v6:
>>
>>> -+#define __BYTE_ORDER 1234
>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>
>> This is gratuitous, mismatches what is done on other archs, and is
>> less safe.
>>
> The modification is based on the following review suggestion(
> WANG Xuerui <i@xen0n.name> reviewed in
> https://www.openwall.com/lists/musl/2022/10/12/1):
>
> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
> with other arches.
>
>>> -+TYPEDEF unsigned nlink_t;
>>> ++TYPEDEF unsigned int nlink_t;
>>
>> Gratuitous and in opposite direction of coding style used elsewhere in
>> musl. There are a few other instances of this too.
>>
> Based on the following review question(WANG Xuerui <i@xen0n.name>
> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>
> `unsigned int`? Same for other bare `unsigned` usages.
>
> I fixed it to a explicit definition.
>
>>> -+ register uintptr_t tp __asm__("tp");
>>> -+ __asm__ ("" : "=r" (tp) );
>>> ++ uintptr_t tp;
>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>> + return tp;
>>
>> Not clear what the motivation is here. Is it working around a compiler
>> bug? The original form was more optimal.
>
> The modification is based on the following review suggestion(
> WANG Xuerui <i@xen0n.name> reviewed in
> https://www.openwall.com/lists/musl/2022/10/12/1):
>
> While the current approach works, it's a bit fragile [1], and
> the simple and plain riscv version works too:
>
> uintptr_t tp;
> __asm__ ("move %0, $tp" : "=r"(tp));
>
> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>
>
>>
>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>> -+
>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>> -+ ".hidden " #sym "\n" \
>>> -+ ".align 8 \n" \
>>> -+ " la.local $t1, "#sym" \n" \
>>> -+ " move %0, $t1 \n" \
>>> -+ : "=r"(*(fp)) : : "memory" )
>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>
>> Not clear why this was changed. It was never discussed afaik. It looks
>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>> default definition.
>>
> Based on the following review question(
> WANG Xuerui <i@xen0n.name> reviewed
> in https://www.openwall.com/lists/musl/2022/10/12/1):
>
> Does the generic version residing in ldso/dlstart.c not work?
>
> I found the code logic is consistent with the generic version, So
> I removed the definition here and replaced it with generic version.
>
>> It also looks like v5->v6 rewrote sigsetjmp.
>>
> Based on the following review question(
> WANG Xuerui <i@xen0n.name> reviewed
> in https://www.openwall.com/lists/musl/2022/10/12/1):
>
> This is crazy complicated compared to the riscv port, why is the
> juggling between a0/a1 and t5/t6 necessary?
>
> I optimized the code implementations.
>
>> v6->v7:
>>
>> sigcontext/mcontext_t change mostly makes sense, but the
>> namespace-safe and full mcontext_t differ in their use of the aligned
>> attribute and it's not clear that the attribute is needed (since the
>> offset is naturally aligned and any instance of the object is produced
>> by the kernel, not by userspace).
>>
>>> -+ long __uc_pad;
>>
>> This change to ucontext_t actually makes the struct ABI-incompatible
>> in the namespace-safe version without the alignment attribute. IIRC I
>> explicitly requested the explicit padding field to avoid this kind of
>> footgun. Removing it does not seem like a good idea.
>>
> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
> Now, we added __attribute__((__aligned__(16))) to
> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16 byte
> alignment. so __uc_pad is not used.
>
> Remove __uc_pad, from the point of struct layout, musl and kernel are
> consistent. otherwise, I think it may bring a sense of inconsistency
> between kernel and musl. Due to Loongarch is not merged into musl now,
> Remove it no compatibility issues.
>
>> In stat.h:
>>
>>> -+ unsigned long __pad;
>>> ++ unsigned long __pad1;
>>
>> This is gratuitous and makes the definition gratuitously mismatch what
>> will become the "generic" version of bits/stat.h. There is no contract
>> for applications to be able to access these padding fields by name, so
>> no motivation to make their names match glibc's names or the kernel's.
>>
> OK.
>
>> In fenv.S:
>>
>>> ++#ifdef __clang__
>>> ++#define FCSR $fcsr0
>>> ++#else
>>> ++#define FCSR $r0
>>> ++#endif
>>
>> It's not clear to me what's going on here. Is there a clang
>> incompatibility in the assembler language you're working around? Or
>> what? If so that seems like a tooling bug that should be fixed.
>>
> The GNU assembler cannot correctly recognize $fcsr0, but the
> LLVM IAS does not have this issue, so make a distinction.
> This issue has been fixed in GNU assembler 2.41. but for compatible
> with GNU assembler 2.40 and below, $r0 need reserved.
>
> The linux kernel also has a similar distinction:
>
> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> Author: WANG Xuerui <git@xen0n.name>
> Date: Thu Jun 29 20:58:43 2023 +0800
>
> LoongArch: Prepare for assemblers with proper FCSR class support
>
> The GNU assembler (as of 2.40) mis-treats FCSR operands as GPRs, but
> the LLVM IAS does not. Probe for this and refer to FCSRs as"$fcsrNN"
> if support is present.
>
> Signed-off-by: WANG Xuerui <git@xen0n.name>
> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>
>> Otherwise, everything looks as expected, I think. I'm okay with making
>> any fixups for merging rather than throwing this back on your team for
>> more revisions, but can you please follow up and clarify the above?
>>
>> Rich
>>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-09-20 7:45 ` Jianmin Lv
@ 2023-09-20 13:16 ` Szabolcs Nagy
2023-09-22 1:37 ` Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Szabolcs Nagy @ 2023-09-20 13:16 UTC (permalink / raw)
To: Jianmin Lv; +Cc: musl, Hongliang Wang
* Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
> Sorry to bother you, but I just want to know if there is any progress on
> this, because Alpine is blocking by this patch for a long time. As Hongliang
> has explained questions you mentioned one by one, if any question need to be
> discussed, please point them out, so that the patch can be handled further.
i think you should post a v8 patch to move
this forward. (not on github, but here)
> On 2023/8/15 下午4:17, Hongliang Wang wrote:
> > 在 2023/8/13 上午9:41, Rich Felker 写道:
> > > On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
> > > > On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> > > > -+#define __BYTE_ORDER 1234
> > > > ++#define __BYTE_ORDER __LITTLE_ENDIAN
> > >
> > > This is gratuitous, mismatches what is done on other archs, and is
> > > less safe.
> > >
> > The modification is based on the following review suggestion(
> > WANG Xuerui <i@xen0n.name> reviewed in
> > https://www.openwall.com/lists/musl/2022/10/12/1):
> >
> > `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
> > with other arches.
please use 1234.
> > > > -+TYPEDEF unsigned nlink_t;
> > > > ++TYPEDEF unsigned int nlink_t;
> > >
> > > Gratuitous and in opposite direction of coding style used elsewhere in
> > > musl. There are a few other instances of this too.
> > >
> > Based on the following review question(WANG Xuerui <i@xen0n.name>
> > reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
> >
> > `unsigned int`? Same for other bare `unsigned` usages.
> >
> > I fixed it to a explicit definition.
please use plain unsigned, not unsigned int.
> > > > -+ register uintptr_t tp __asm__("tp");
> > > > -+ __asm__ ("" : "=r" (tp) );
> > > > ++ uintptr_t tp;
> > > > ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> > > > + return tp;
> > >
> > > Not clear what the motivation is here. Is it working around a compiler
> > > bug? The original form was more optimal.
> >
> > The modification is based on the following review suggestion(
> > WANG Xuerui <i@xen0n.name> reviewed in
> > https://www.openwall.com/lists/musl/2022/10/12/1):
> >
> > While the current approach works, it's a bit fragile [1], and
> > the simple and plain riscv version works too:
> >
> > uintptr_t tp;
> > __asm__ ("move %0, $tp" : "=r"(tp));
> >
> > [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
this looks ok to me.
(original code looks sketchy to me.)
> > > > +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> > > > -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > -+
> > > > -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> > > > -+ ".hidden " #sym "\n" \
> > > > -+ ".align 8 \n" \
> > > > -+ " la.local $t1, "#sym" \n" \
> > > > -+ " move %0, $t1 \n" \
> > > > -+ : "=r"(*(fp)) : : "memory" )
> > > > ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > >
> > > Not clear why this was changed. It was never discussed afaik. It looks
> > > somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
> > > default definition.
> > >
> > Based on the following review question(
> > WANG Xuerui <i@xen0n.name> reviewed
> > in https://www.openwall.com/lists/musl/2022/10/12/1):
> >
> > Does the generic version residing in ldso/dlstart.c not work?
> >
> > I found the code logic is consistent with the generic version, So
> > I removed the definition here and replaced it with generic version.
i would change it back to the asm.
generic version should work, but maybe we don't
want to trust the compiler here (there may be
ways to compile the generic code that is not
compatible with incompletely relocated libc.so)
the asm is safer.
> > > It also looks like v5->v6 rewrote sigsetjmp.
> > >
> > Based on the following review question(
> > WANG Xuerui <i@xen0n.name> reviewed
> > in https://www.openwall.com/lists/musl/2022/10/12/1):
> >
> > This is crazy complicated compared to the riscv port, why is the
> > juggling between a0/a1 and t5/t6 necessary?
> >
> > I optimized the code implementations.
this should be ok.
> > > v6->v7:
> > >
> > > sigcontext/mcontext_t change mostly makes sense, but the
> > > namespace-safe and full mcontext_t differ in their use of the aligned
> > > attribute and it's not clear that the attribute is needed (since the
> > > offset is naturally aligned and any instance of the object is produced
> > > by the kernel, not by userspace).
> > >
> > > > -+ long __uc_pad;
> > >
> > > This change to ucontext_t actually makes the struct ABI-incompatible
> > > in the namespace-safe version without the alignment attribute. IIRC I
> > > explicitly requested the explicit padding field to avoid this kind of
> > > footgun. Removing it does not seem like a good idea.
> > >
> > Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
> > Now, we added __attribute__((__aligned__(16))) to
> > uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16 byte
> > alignment. so __uc_pad is not used.
> >
> > Remove __uc_pad, from the point of struct layout, musl and kernel are
> > consistent. otherwise, I think it may bring a sense of inconsistency
> > between kernel and musl. Due to Loongarch is not merged into musl now,
> > Remove it no compatibility issues.
please add back the padding field.
> > > In stat.h:
> > >
> > > > -+ unsigned long __pad;
> > > > ++ unsigned long __pad1;
> > >
> > > This is gratuitous and makes the definition gratuitously mismatch what
> > > will become the "generic" version of bits/stat.h. There is no contract
> > > for applications to be able to access these padding fields by name, so
> > > no motivation to make their names match glibc's names or the kernel's.
> > >
> > OK.
please fix it.
> > > In fenv.S:
> > >
> > > > ++#ifdef __clang__
> > > > ++#define FCSR $fcsr0
> > > > ++#else
> > > > ++#define FCSR $r0
> > > > ++#endif
> > >
> > > It's not clear to me what's going on here. Is there a clang
> > > incompatibility in the assembler language you're working around? Or
> > > what? If so that seems like a tooling bug that should be fixed.
> > >
> > The GNU assembler cannot correctly recognize $fcsr0, but the
> > LLVM IAS does not have this issue, so make a distinction.
> > This issue has been fixed in GNU assembler 2.41. but for compatible
> > with GNU assembler 2.40 and below, $r0 need reserved.
it sounds like the correct asm is $fcsr0, so that's
what should be used on all assemblers, not just on
clang as.
only broken old gnu as should use different syntax.
for this a configure test is needed that adds a
CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
and use that for the ifdef.
> >
> > The linux kernel also has a similar distinction:
> >
> > commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> > Author: WANG Xuerui <git@xen0n.name>
> > Date: Thu Jun 29 20:58:43 2023 +0800
> >
> > LoongArch: Prepare for assemblers with proper FCSR class support
> >
> > The GNU assembler (as of 2.40) mis-treats FCSR operands as GPRs, but
> > the LLVM IAS does not. Probe for this and refer to FCSRs as"$fcsrNN"
> > if support is present.
> >
> > Signed-off-by: WANG Xuerui <git@xen0n.name>
> > Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
> >
> > > Otherwise, everything looks as expected, I think. I'm okay with making
> > > any fixups for merging rather than throwing this back on your team for
> > > more revisions, but can you please follow up and clarify the above?
all issues look minor.
if you post a v8 it likely gets into a release faster.
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v7.
2023-09-20 13:16 ` Szabolcs Nagy
@ 2023-09-22 1:37 ` Hongliang Wang
2023-09-26 3:28 ` [musl] add loongarch64 port v8 Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Hongliang Wang @ 2023-09-22 1:37 UTC (permalink / raw)
To: Jianmin Lv, musl
Hi,
Thank you for your review, I will modify it according to the review
suggestions and post v8 patch later.
Hongliang Wang
在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
>> Sorry to bother you, but I just want to know if there is any progress on
>> this, because Alpine is blocking by this patch for a long time. As Hongliang
>> has explained questions you mentioned one by one, if any question need to be
>> discussed, please point them out, so that the patch can be handled further.
>
> i think you should post a v8 patch to move
> this forward. (not on github, but here)
>
>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>>> -+#define __BYTE_ORDER 1234
>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>
>>>> This is gratuitous, mismatches what is done on other archs, and is
>>>> less safe.
>>>>
>>> The modification is based on the following review suggestion(
>>> WANG Xuerui <i@xen0n.name> reviewed in
>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>
>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
>>> with other arches.
>
> please use 1234.
>
>>>>> -+TYPEDEF unsigned nlink_t;
>>>>> ++TYPEDEF unsigned int nlink_t;
>>>>
>>>> Gratuitous and in opposite direction of coding style used elsewhere in
>>>> musl. There are a few other instances of this too.
>>>>
>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>
>>> `unsigned int`? Same for other bare `unsigned` usages.
>>>
>>> I fixed it to a explicit definition.
>
> please use plain unsigned, not unsigned int.
>
>>>>> -+ register uintptr_t tp __asm__("tp");
>>>>> -+ __asm__ ("" : "=r" (tp) );
>>>>> ++ uintptr_t tp;
>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>>>> + return tp;
>>>>
>>>> Not clear what the motivation is here. Is it working around a compiler
>>>> bug? The original form was more optimal.
>>>
>>> The modification is based on the following review suggestion(
>>> WANG Xuerui <i@xen0n.name> reviewed in
>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>
>>> While the current approach works, it's a bit fragile [1], and
>>> the simple and plain riscv version works too:
>>>
>>> uintptr_t tp;
>>> __asm__ ("move %0, $tp" : "=r"(tp));
>>>
>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>
> this looks ok to me.
>
> (original code looks sketchy to me.)
>
>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>> -+
>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>> -+ ".hidden " #sym "\n" \
>>>>> -+ ".align 8 \n" \
>>>>> -+ " la.local $t1, "#sym" \n" \
>>>>> -+ " move %0, $t1 \n" \
>>>>> -+ : "=r"(*(fp)) : : "memory" )
>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>
>>>> Not clear why this was changed. It was never discussed afaik. It looks
>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>>>> default definition.
>>>>
>>> Based on the following review question(
>>> WANG Xuerui <i@xen0n.name> reviewed
>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>
>>> Does the generic version residing in ldso/dlstart.c not work?
>>>
>>> I found the code logic is consistent with the generic version, So
>>> I removed the definition here and replaced it with generic version.
>
> i would change it back to the asm.
>
> generic version should work, but maybe we don't
> want to trust the compiler here (there may be
> ways to compile the generic code that is not
> compatible with incompletely relocated libc.so)
> the asm is safer.
>
>>>> It also looks like v5->v6 rewrote sigsetjmp.
>>>>
>>> Based on the following review question(
>>> WANG Xuerui <i@xen0n.name> reviewed
>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>
>>> This is crazy complicated compared to the riscv port, why is the
>>> juggling between a0/a1 and t5/t6 necessary?
>>>
>>> I optimized the code implementations.
>
> this should be ok.
>
>>>> v6->v7:
>>>>
>>>> sigcontext/mcontext_t change mostly makes sense, but the
>>>> namespace-safe and full mcontext_t differ in their use of the aligned
>>>> attribute and it's not clear that the attribute is needed (since the
>>>> offset is naturally aligned and any instance of the object is produced
>>>> by the kernel, not by userspace).
>>>>
>>>>> -+ long __uc_pad;
>>>>
>>>> This change to ucontext_t actually makes the struct ABI-incompatible
>>>> in the namespace-safe version without the alignment attribute. IIRC I
>>>> explicitly requested the explicit padding field to avoid this kind of
>>>> footgun. Removing it does not seem like a good idea.
>>>>
>>> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
>>> Now, we added __attribute__((__aligned__(16))) to
>>> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16 byte
>>> alignment. so __uc_pad is not used.
>>>
>>> Remove __uc_pad, from the point of struct layout, musl and kernel are
>>> consistent. otherwise, I think it may bring a sense of inconsistency
>>> between kernel and musl. Due to Loongarch is not merged into musl now,
>>> Remove it no compatibility issues.
>
> please add back the padding field.
>
>>>> In stat.h:
>>>>
>>>>> -+ unsigned long __pad;
>>>>> ++ unsigned long __pad1;
>>>>
>>>> This is gratuitous and makes the definition gratuitously mismatch what
>>>> will become the "generic" version of bits/stat.h. There is no contract
>>>> for applications to be able to access these padding fields by name, so
>>>> no motivation to make their names match glibc's names or the kernel's.
>>>>
>>> OK.
>
> please fix it.
>
>>>> In fenv.S:
>>>>
>>>>> ++#ifdef __clang__
>>>>> ++#define FCSR $fcsr0
>>>>> ++#else
>>>>> ++#define FCSR $r0
>>>>> ++#endif
>>>>
>>>> It's not clear to me what's going on here. Is there a clang
>>>> incompatibility in the assembler language you're working around? Or
>>>> what? If so that seems like a tooling bug that should be fixed.
>>>>
>>> The GNU assembler cannot correctly recognize $fcsr0, but the
>>> LLVM IAS does not have this issue, so make a distinction.
>>> This issue has been fixed in GNU assembler 2.41. but for compatible
>>> with GNU assembler 2.40 and below, $r0 need reserved.
>
> it sounds like the correct asm is $fcsr0, so that's
> what should be used on all assemblers, not just on
> clang as.
>
> only broken old gnu as should use different syntax.
> for this a configure test is needed that adds a
> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
> and use that for the ifdef.
>
>>>
>>> The linux kernel also has a similar distinction:
>>>
>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
>>> Author: WANG Xuerui <git@xen0n.name>
>>> Date: Thu Jun 29 20:58:43 2023 +0800
>>>
>>> LoongArch: Prepare for assemblers with proper FCSR class support
>>>
>>> The GNU assembler (as of 2.40) mis-treats FCSR operands as GPRs, but
>>> the LLVM IAS does not. Probe for this and refer to FCSRs as"$fcsrNN"
>>> if support is present.
>>>
>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>>>
>>>> Otherwise, everything looks as expected, I think. I'm okay with making
>>>> any fixups for merging rather than throwing this back on your team for
>>>> more revisions, but can you please follow up and clarify the above?
>
> all issues look minor.
>
> if you post a v8 it likely gets into a release faster.
>
^ permalink raw reply [flat|nested] 35+ messages in thread
* [musl] add loongarch64 port v8.
2023-09-22 1:37 ` Hongliang Wang
@ 2023-09-26 3:28 ` Hongliang Wang
2023-10-08 3:05 ` 花静云
2023-11-09 13:15 ` Jingyun Hua
0 siblings, 2 replies; 35+ messages in thread
From: Hongliang Wang @ 2023-09-26 3:28 UTC (permalink / raw)
To: musl
[-- Attachment #1: Type: text/plain, Size: 10689 bytes --]
Hi,
I have fixed the issues listed below, and post
0001-add-loongarch64-port-v8.patch,as shown in the attachment.
please review again, if there are anything that need to be modified,
please point out, thank you.
Hongliang Wang
在 2023/9/22 上午9:37, Hongliang Wang 写道:
> Hi,
>
> Thank you for your review, I will modify it according to the review
> suggestions and post v8 patch later.
>
> Hongliang Wang
>
> 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
>> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
>>> Sorry to bother you, but I just want to know if there is any progress on
>>> this, because Alpine is blocking by this patch for a long time. As
>>> Hongliang
>>> has explained questions you mentioned one by one, if any question
>>> need to be
>>> discussed, please point them out, so that the patch can be handled
>>> further.
>>
>> i think you should post a v8 patch to move
>> this forward. (not on github, but here)
>>
>>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
>>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
>>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>>>> -+#define __BYTE_ORDER 1234
>>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>>
>>>>> This is gratuitous, mismatches what is done on other archs, and is
>>>>> less safe.
>>>>>
>>>> The modification is based on the following review suggestion(
>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>
>>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
>>>> with other arches.
>>
>> please use 1234.
--- a/arch/loongarch64/bits/alltypes.h.in
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -2,7 +2,7 @@
#define _Int64 long
#define _Reg long
-#define __BYTE_ORDER __LITTLE_ENDIAN
+#define __BYTE_ORDER 1234
#define __LONG_MAX 0x7fffffffffffffffL
>>
>>>>>> -+TYPEDEF unsigned nlink_t;
>>>>>> ++TYPEDEF unsigned int nlink_t;
>>>>>
>>>>> Gratuitous and in opposite direction of coding style used elsewhere in
>>>>> musl. There are a few other instances of this too.
>>>>>
>>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
>>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>
>>>> `unsigned int`? Same for other bare `unsigned` usages.
>>>>
>>>> I fixed it to a explicit definition.
>>
>> please use plain unsigned, not unsigned int.
--- a/arch/loongarch64/bits/alltypes.h.in
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -2,7 +2,7 @@
-TYPEDEF unsigned int nlink_t;
+TYPEDEF unsigned nlink_t;
TYPEDEF int blksize_t;
>>
>>>>>> -+ register uintptr_t tp __asm__("tp");
>>>>>> -+ __asm__ ("" : "=r" (tp) );
>>>>>> ++ uintptr_t tp;
>>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>>>>> + return tp;
>>>>>
>>>>> Not clear what the motivation is here. Is it working around a compiler
>>>>> bug? The original form was more optimal.
>>>>
>>>> The modification is based on the following review suggestion(
>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>
>>>> While the current approach works, it's a bit fragile [1], and
>>>> the simple and plain riscv version works too:
>>>>
>>>> uintptr_t tp;
>>>> __asm__ ("move %0, $tp" : "=r"(tp));
>>>>
>>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>>>>
>>
>> this looks ok to me.
>>
>> (original code looks sketchy to me.)
>>
>>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>> -+
>>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>>> -+ ".hidden " #sym "\n" \
>>>>>> -+ ".align 8 \n" \
>>>>>> -+ " la.local $t1, "#sym" \n" \
>>>>>> -+ " move %0, $t1 \n" \
>>>>>> -+ : "=r"(*(fp)) : : "memory" )
>>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>
>>>>> Not clear why this was changed. It was never discussed afaik. It looks
>>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>>>>> default definition.
>>>>>
>>>> Based on the following review question(
>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>
>>>> Does the generic version residing in ldso/dlstart.c not work?
>>>>
>>>> I found the code logic is consistent with the generic version, So
>>>> I removed the definition here and replaced it with generic version.
>>
>> i would change it back to the asm.
>>
>> generic version should work, but maybe we don't
>> want to trust the compiler here (there may be
>> ways to compile the generic code that is not
>> compatible with incompletely relocated libc.so)
>> the asm is safer.
>>
--- a/arch/loongarch64/reloc.h
+++ b/arch/loongarch64/reloc.h
@@ -18,3 +18,10 @@
#define CRTJMP(pc,sp) __asm__ __volatile__( \
"move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+ ".hidden " #sym "\n" \
+ ".align 8 \n" \
+ " la.local $t1, "#sym" \n" \
+ " move %0, $t1 \n" \
+ : "=r"(*(fp)) : : "memory" )
>>>>> It also looks like v5->v6 rewrote sigsetjmp.
>>>>>
>>>> Based on the following review question(
>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>
>>>> This is crazy complicated compared to the riscv port, why is the
>>>> juggling between a0/a1 and t5/t6 necessary?
>>>>
>>>> I optimized the code implementations.
>>
>> this should be ok.
>>
>>>>> v6->v7:
>>>>>
>>>>> sigcontext/mcontext_t change mostly makes sense, but the
>>>>> namespace-safe and full mcontext_t differ in their use of the aligned
>>>>> attribute and it's not clear that the attribute is needed (since the
>>>>> offset is naturally aligned and any instance of the object is produced
>>>>> by the kernel, not by userspace).
>>>>>
>>>>>> -+ long __uc_pad;
>>>>>
>>>>> This change to ucontext_t actually makes the struct ABI-incompatible
>>>>> in the namespace-safe version without the alignment attribute. IIRC I
>>>>> explicitly requested the explicit padding field to avoid this kind of
>>>>> footgun. Removing it does not seem like a good idea.
>>>>>
>>>> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
>>>> Now, we added __attribute__((__aligned__(16))) to
>>>> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16 byte
>>>> alignment. so __uc_pad is not used.
>>>>
>>>> Remove __uc_pad, from the point of struct layout, musl and kernel are
>>>> consistent. otherwise, I think it may bring a sense of inconsistency
>>>> between kernel and musl. Due to Loongarch is not merged into musl now,
>>>> Remove it no compatibility issues.
>>
>> please add back the padding field.
--- a/arch/loongarch64/bits/signal.h
+++ b/arch/loongarch64/bits/signal.h
@@ -40,6 +40,7 @@ typedef struct __ucontext
struct __ucontext *uc_link;
stack_t uc_stack;
sigset_t uc_sigmask;
+ long __uc_pad;
mcontext_t uc_mcontext;
} ucontext_t;
>>
>>>>> In stat.h:
>>>>>
>>>>>> -+ unsigned long __pad;
>>>>>> ++ unsigned long __pad1;
>>>>>
>>>>> This is gratuitous and makes the definition gratuitously mismatch what
>>>>> will become the "generic" version of bits/stat.h. There is no contract
>>>>> for applications to be able to access these padding fields by name, so
>>>>> no motivation to make their names match glibc's names or the kernel's.
>>>>>
>>>> OK.
>>
>> please fix it.
--- a/arch/loongarch64/bits/stat.h
+++ b/arch/loongarch64/bits/stat.h
@@ -6,7 +6,7 @@ struct stat {
uid_t st_uid;
gid_t st_gid;
dev_t st_rdev;
- unsigned long __pad1;
+ unsigned long __pad;
off_t st_size;
blksize_t st_blksize;
int __pad2;
>>
>>>>> In fenv.S:
>>>>>
>>>>>> ++#ifdef __clang__
>>>>>> ++#define FCSR $fcsr0
>>>>>> ++#else
>>>>>> ++#define FCSR $r0
>>>>>> ++#endif
>>>>>
>>>>> It's not clear to me what's going on here. Is there a clang
>>>>> incompatibility in the assembler language you're working around? Or
>>>>> what? If so that seems like a tooling bug that should be fixed.
>>>>>
>>>> The GNU assembler cannot correctly recognize $fcsr0, but the
>>>> LLVM IAS does not have this issue, so make a distinction.
>>>> This issue has been fixed in GNU assembler 2.41. but for compatible
>>>> with GNU assembler 2.40 and below, $r0 need reserved.
>>
>> it sounds like the correct asm is $fcsr0, so that's
>> what should be used on all assemblers, not just on
>> clang as.
>>
>> only broken old gnu as should use different syntax.
>> for this a configure test is needed that adds a
>> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
>> and use that for the ifdef.
>>
--- a/configure
+++ b/configure
if test "$ARCH" = "loongarch64" ; then
trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
+printf "checking whether compiler support FCSRs... "
+echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
+if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+printf "yes\n"
+else
+printf "no\n"
+CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
+fi
fi
--- a/src/fenv/loongarch64/fenv.S
+++ b/src/fenv/loongarch64/fenv.S
@@ -1,9 +1,9 @@
#ifndef __loongarch_soft_float
-#ifdef __clang__
-#define FCSR $fcsr0
-#else
+#ifdef BROKEN_LOONGARCH_FCSR_ASM
#define FCSR $r0
+#else
+#define FCSR $fcsr0
#endif
.global feclearexcept
>>>>
>>>> The linux kernel also has a similar distinction:
>>>>
>>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
>>>> Author: WANG Xuerui <git@xen0n.name>
>>>> Date: Thu Jun 29 20:58:43 2023 +0800
>>>>
>>>> LoongArch: Prepare for assemblers with proper FCSR class support
>>>>
>>>> The GNU assembler (as of 2.40) mis-treats FCSR operands as
>>>> GPRs, but
>>>> the LLVM IAS does not. Probe for this and refer to FCSRs
>>>> as"$fcsrNN"
>>>> if support is present.
>>>>
>>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
>>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>>>>
>>>>> Otherwise, everything looks as expected, I think. I'm okay with making
>>>>> any fixups for merging rather than throwing this back on your team for
>>>>> more revisions, but can you please follow up and clarify the above?
>>
>> all issues look minor.
>>
>> if you post a v8 it likely gets into a release faster.
>>
[-- Attachment #2: 0001-add-loongarch64-port-v8.patch --]
[-- Type: text/x-patch, Size: 45012 bytes --]
From 2a69b18ed2ef0f85d4180bcff7e1f9e8b7d1ba8c Mon Sep 17 00:00:00 2001
From: Hongliang Wang <wanghongliang@loongson.cn>
Date: Tue, 26 Sep 2023 09:12:01 +0800
Subject: [PATCH] add loongarch64 port v8.
Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Author: Meidan Li <limeidan@loongson.cn>
Author: Guoqi Chen <chenguoqi@loongson.cn>
Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Author: Fan peng <fanpeng@loongson.cn>
Author: Jiantao Shan <shanjiantao@loongson.cn>
Author: Xuhui Qiang <qiangxuhui@loongson.cn>
Author: Jingyun Hua <huajingyun@loongson.cn>
Author: Liu xue <liuxue@loongson.cn>
Author: Hongliang Wang <wanghongliang@loongson.cn>
Signed-off-by: Hongliang Wang <wanghongliang@loongson.cn>
---
arch/loongarch64/atomic_arch.h | 53 ++++
arch/loongarch64/bits/alltypes.h.in | 18 ++
arch/loongarch64/bits/fenv.h | 20 ++
arch/loongarch64/bits/float.h | 16 ++
arch/loongarch64/bits/posix.h | 2 +
arch/loongarch64/bits/ptrace.h | 4 +
arch/loongarch64/bits/reg.h | 2 +
arch/loongarch64/bits/setjmp.h | 1 +
arch/loongarch64/bits/signal.h | 92 +++++++
arch/loongarch64/bits/stat.h | 18 ++
arch/loongarch64/bits/stdint.h | 20 ++
arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
arch/loongarch64/bits/user.h | 5 +
arch/loongarch64/crt_arch.h | 13 +
arch/loongarch64/pthread_arch.h | 11 +
arch/loongarch64/reloc.h | 27 ++
arch/loongarch64/syscall_arch.h | 137 ++++++++++
configure | 13 +
include/elf.h | 104 ++++++-
src/fenv/loongarch64/fenv.S | 78 ++++++
src/ldso/loongarch64/dlsym.s | 7 +
src/setjmp/loongarch64/longjmp.S | 32 +++
src/setjmp/loongarch64/setjmp.S | 34 +++
src/signal/loongarch64/restore.s | 10 +
src/signal/loongarch64/sigsetjmp.s | 25 ++
src/thread/loongarch64/__set_thread_area.s | 7 +
src/thread/loongarch64/__unmapself.s | 7 +
src/thread/loongarch64/clone.s | 28 ++
src/thread/loongarch64/syscall_cp.s | 29 ++
29 files changed, 1115 insertions(+), 1 deletion(-)
create mode 100644 arch/loongarch64/atomic_arch.h
create mode 100644 arch/loongarch64/bits/alltypes.h.in
create mode 100644 arch/loongarch64/bits/fenv.h
create mode 100644 arch/loongarch64/bits/float.h
create mode 100644 arch/loongarch64/bits/posix.h
create mode 100644 arch/loongarch64/bits/ptrace.h
create mode 100644 arch/loongarch64/bits/reg.h
create mode 100644 arch/loongarch64/bits/setjmp.h
create mode 100644 arch/loongarch64/bits/signal.h
create mode 100644 arch/loongarch64/bits/stat.h
create mode 100644 arch/loongarch64/bits/stdint.h
create mode 100644 arch/loongarch64/bits/syscall.h.in
create mode 100644 arch/loongarch64/bits/user.h
create mode 100644 arch/loongarch64/crt_arch.h
create mode 100644 arch/loongarch64/pthread_arch.h
create mode 100644 arch/loongarch64/reloc.h
create mode 100644 arch/loongarch64/syscall_arch.h
create mode 100644 src/fenv/loongarch64/fenv.S
create mode 100644 src/ldso/loongarch64/dlsym.s
create mode 100644 src/setjmp/loongarch64/longjmp.S
create mode 100644 src/setjmp/loongarch64/setjmp.S
create mode 100644 src/signal/loongarch64/restore.s
create mode 100644 src/signal/loongarch64/sigsetjmp.s
create mode 100644 src/thread/loongarch64/__set_thread_area.s
create mode 100644 src/thread/loongarch64/__unmapself.s
create mode 100644 src/thread/loongarch64/clone.s
create mode 100644 src/thread/loongarch64/syscall_cp.s
diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
new file mode 100644
index 00000000..2225d027
--- /dev/null
+++ b/arch/loongarch64/atomic_arch.h
@@ -0,0 +1,53 @@
+#define a_ll a_ll
+static inline int a_ll(volatile int *p)
+{
+ int v;
+ __asm__ __volatile__ (
+ "ll.w %0, %1"
+ : "=r"(v)
+ : "ZC"(*p));
+ return v;
+}
+
+#define a_sc a_sc
+static inline int a_sc(volatile int *p, int v)
+{
+ int r;
+ __asm__ __volatile__ (
+ "sc.w %0, %1"
+ : "=r"(r), "=ZC"(*p)
+ : "0"(v) : "memory");
+ return r;
+}
+
+#define a_ll_p a_ll_p
+static inline void *a_ll_p(volatile void *p)
+{
+ void *v;
+ __asm__ __volatile__ (
+ "ll.d %0, %1"
+ : "=r"(v)
+ : "ZC"(*(void *volatile *)p));
+ return v;
+}
+
+#define a_sc_p a_sc_p
+static inline int a_sc_p(volatile void *p, void *v)
+{
+ long r;
+ __asm__ __volatile__ (
+ "sc.d %0, %1"
+ : "=r"(r), "=ZC"(*(void *volatile *)p)
+ : "0"(v)
+ : "memory");
+ return r;
+}
+
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("dbar 0" : : : "memory");
+}
+
+#define a_pre_llsc a_barrier
+#define a_post_llsc a_barrier
diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
new file mode 100644
index 00000000..06db4096
--- /dev/null
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -0,0 +1,18 @@
+#define _Addr long
+#define _Int64 long
+#define _Reg long
+
+#define __BYTE_ORDER 1234
+#define __LONG_MAX 0x7fffffffffffffffL
+
+#ifndef __cplusplus
+TYPEDEF int wchar_t;
+#endif
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
+
+TYPEDEF unsigned nlink_t;
+TYPEDEF int blksize_t;
diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
new file mode 100644
index 00000000..99e916e1
--- /dev/null
+++ b/arch/loongarch64/bits/fenv.h
@@ -0,0 +1,20 @@
+#define FE_INEXACT 0x010000
+#define FE_UNDERFLOW 0x020000
+#define FE_OVERFLOW 0x040000
+#define FE_DIVBYZERO 0x080000
+#define FE_INVALID 0x100000
+
+#define FE_ALL_EXCEPT 0x1F0000
+
+#define FE_TONEAREST 0x000
+#define FE_TOWARDZERO 0x100
+#define FE_UPWARD 0x200
+#define FE_DOWNWARD 0x300
+
+typedef unsigned fexcept_t;
+
+typedef struct {
+ unsigned int __cw;
+} fenv_t;
+
+#define FE_DFL_ENV ((const fenv_t *) -1)
diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
new file mode 100644
index 00000000..63e86d44
--- /dev/null
+++ b/arch/loongarch64/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
+#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
+#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
+#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+
+#define LDBL_MANT_DIG 113
+#define LDBL_MIN_EXP (-16381)
+#define LDBL_MAX_EXP 16384
+
+#define LDBL_DIG 33
+#define LDBL_MIN_10_EXP (-4931)
+#define LDBL_MAX_10_EXP 4932
+
+#define DECIMAL_DIG 36
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..c37b94c1
--- /dev/null
+++ b/arch/loongarch64/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_LP64_OFF64 1
+#define _POSIX_V7_LP64_OFF64 1
diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
new file mode 100644
index 00000000..dce2fa51
--- /dev/null
+++ b/arch/loongarch64/bits/ptrace.h
@@ -0,0 +1,4 @@
+#define PTRACE_GET_THREAD_AREA 25
+#define PTRACE_SET_THREAD_AREA 26
+#define PTRACE_GET_WATCH_REGS 0xd0
+#define PTRACE_SET_WATCH_REGS 0xd1
diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
new file mode 100644
index 00000000..2633f39d
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,2 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..4bfa374d
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long __jmp_buf[23];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..e1d256e7
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,92 @@
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define MINSIGSTKSZ 4096
+#define SIGSTKSZ 16384
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef unsigned long greg_t, gregset_t[32];
+
+struct sigcontext {
+ unsigned long sc_pc;
+ unsigned long sc_regs[32];
+ unsigned int sc_flags;
+ unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
+};
+
+typedef struct {
+ unsigned long __pc;
+ unsigned long __gregs[32];
+ unsigned int __flags;
+ unsigned long __extcontext[] __attribute__((__aligned__(16)));
+} mcontext_t;
+#else
+typedef struct {
+ unsigned long __space[34];
+} mcontext_t;
+#endif
+
+struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+};
+
+typedef struct __ucontext
+{
+ unsigned long __uc_flags;
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ sigset_t uc_sigmask;
+ long __uc_pad;
+ mcontext_t uc_mcontext;
+} ucontext_t;
+
+#define SA_NOCLDSTOP 1
+#define SA_NOCLDWAIT 2
+#define SA_SIGINFO 4
+#define SA_ONSTACK 0x08000000
+#define SA_RESTART 0x10000000
+#define SA_NODEFER 0x40000000
+#define SA_RESETHAND 0x80000000
+#define SA_RESTORER 0x0
+
+#endif
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT SIGABRT
+#define SIGBUS 7
+#define SIGFPE 8
+#define SIGKILL 9
+#define SIGUSR1 10
+#define SIGSEGV 11
+#define SIGUSR2 12
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGTERM 15
+#define SIGSTKFLT 16
+#define SIGCHLD 17
+#define SIGCONT 18
+#define SIGSTOP 19
+#define SIGTSTP 20
+#define SIGTTIN 21
+#define SIGTTOU 22
+#define SIGURG 23
+#define SIGXCPU 24
+#define SIGXFSZ 25
+#define SIGVTALRM 26
+#define SIGPROF 27
+#define SIGWINCH 28
+#define SIGIO 29
+#define SIGPOLL SIGIO
+#define SIGPWR 30
+#define SIGSYS 31
+#define SIGUNUSED SIGSYS
+#define _NSIG 65
diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
new file mode 100644
index 00000000..b7f4221b
--- /dev/null
+++ b/arch/loongarch64/bits/stat.h
@@ -0,0 +1,18 @@
+struct stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ unsigned long __pad;
+ off_t st_size;
+ blksize_t st_blksize;
+ int __pad2;
+ blkcnt_t st_blocks;
+ struct timespec st_atim;
+ struct timespec st_mtim;
+ struct timespec st_ctim;
+ unsigned __unused[2];
+};
diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
new file mode 100644
index 00000000..60c12499
--- /dev/null
+++ b/arch/loongarch64/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST32_MIN INT32_MIN
+
+#define INT_FAST16_MAX INT32_MAX
+#define INT_FAST32_MAX INT32_MAX
+
+#define UINT_FAST16_MAX UINT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN INT64_MIN
+#define INTPTR_MAX INT64_MAX
+#define UINTPTR_MAX UINT64_MAX
+#define PTRDIFF_MIN INT64_MIN
+#define PTRDIFF_MAX INT64_MAX
+#define SIZE_MAX UINT64_MAX
diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
new file mode 100644
index 00000000..0980e533
--- /dev/null
+++ b/arch/loongarch64/bits/syscall.h.in
@@ -0,0 +1,303 @@
+#define __NR_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+#define __NR_setxattr 5
+#define __NR_lsetxattr 6
+#define __NR_fsetxattr 7
+#define __NR_getxattr 8
+#define __NR_lgetxattr 9
+#define __NR_fgetxattr 10
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_flistxattr 13
+#define __NR_removexattr 14
+#define __NR_lremovexattr 15
+#define __NR_fremovexattr 16
+#define __NR_getcwd 17
+#define __NR_lookup_dcookie 18
+#define __NR_eventfd2 19
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR3264_fcntl 25
+#define __NR_inotify_init1 26
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_rm_watch 28
+#define __NR_ioctl 29
+#define __NR_ioprio_set 30
+#define __NR_ioprio_get 31
+#define __NR_flock 32
+#define __NR_mknodat 33
+#define __NR_mkdirat 34
+#define __NR_unlinkat 35
+#define __NR_symlinkat 36
+#define __NR_linkat 37
+#define __NR_umount2 39
+#define __NR_mount 40
+#define __NR_pivot_root 41
+#define __NR_nfsservctl 42
+#define __NR3264_statfs 43
+#define __NR3264_fstatfs 44
+#define __NR3264_truncate 45
+#define __NR3264_ftruncate 46
+#define __NR_fallocate 47
+#define __NR_faccessat 48
+#define __NR_chdir 49
+#define __NR_fchdir 50
+#define __NR_chroot 51
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchownat 54
+#define __NR_fchown 55
+#define __NR_openat 56
+#define __NR_close 57
+#define __NR_vhangup 58
+#define __NR_pipe2 59
+#define __NR_quotactl 60
+#define __NR_getdents64 61
+#define __NR3264_lseek 62
+#define __NR_read 63
+#define __NR_write 64
+#define __NR_readv 65
+#define __NR_writev 66
+#define __NR_pread64 67
+#define __NR_pwrite64 68
+#define __NR_preadv 69
+#define __NR_pwritev 70
+#define __NR3264_sendfile 71
+#define __NR_pselect6 72
+#define __NR_ppoll 73
+#define __NR_signalfd4 74
+#define __NR_vmsplice 75
+#define __NR_splice 76
+#define __NR_tee 77
+#define __NR_readlinkat 78
+#define __NR_sync 81
+#define __NR_fsync 82
+#define __NR_fdatasync 83
+#define __NR_sync_file_range 84
+#define __NR_timerfd_create 85
+#define __NR_timerfd_settime 86
+#define __NR_timerfd_gettime 87
+#define __NR_utimensat 88
+#define __NR_acct 89
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_personality 92
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_waitid 95
+#define __NR_set_tid_address 96
+#define __NR_unshare 97
+#define __NR_futex 98
+#define __NR_set_robust_list 99
+#define __NR_get_robust_list 100
+#define __NR_nanosleep 101
+#define __NR_getitimer 102
+#define __NR_setitimer 103
+#define __NR_kexec_load 104
+#define __NR_init_module 105
+#define __NR_delete_module 106
+#define __NR_timer_create 107
+#define __NR_timer_gettime 108
+#define __NR_timer_getoverrun 109
+#define __NR_timer_settime 110
+#define __NR_timer_delete 111
+#define __NR_clock_settime 112
+#define __NR_clock_gettime 113
+#define __NR_clock_getres 114
+#define __NR_clock_nanosleep 115
+#define __NR_syslog 116
+#define __NR_ptrace 117
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_getscheduler 120
+#define __NR_sched_getparam 121
+#define __NR_sched_setaffinity 122
+#define __NR_sched_getaffinity 123
+#define __NR_sched_yield 124
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_rr_get_interval 127
+#define __NR_restart_syscall 128
+#define __NR_kill 129
+#define __NR_tkill 130
+#define __NR_tgkill 131
+#define __NR_sigaltstack 132
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_setpriority 140
+#define __NR_getpriority 141
+#define __NR_reboot 142
+#define __NR_setregid 143
+#define __NR_setgid 144
+#define __NR_setreuid 145
+#define __NR_setuid 146
+#define __NR_setresuid 147
+#define __NR_getresuid 148
+#define __NR_setresgid 149
+#define __NR_getresgid 150
+#define __NR_setfsuid 151
+#define __NR_setfsgid 152
+#define __NR_times 153
+#define __NR_setpgid 154
+#define __NR_getpgid 155
+#define __NR_getsid 156
+#define __NR_setsid 157
+#define __NR_getgroups 158
+#define __NR_setgroups 159
+#define __NR_uname 160
+#define __NR_sethostname 161
+#define __NR_setdomainname 162
+#define __NR_getrlimit 163
+#define __NR_setrlimit 164
+#define __NR_getrusage 165
+#define __NR_umask 166
+#define __NR_prctl 167
+#define __NR_getcpu 168
+#define __NR_gettimeofday 169
+#define __NR_settimeofday 170
+#define __NR_adjtimex 171
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getuid 174
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getegid 177
+#define __NR_gettid 178
+#define __NR_sysinfo 179
+#define __NR_mq_open 180
+#define __NR_mq_unlink 181
+#define __NR_mq_timedsend 182
+#define __NR_mq_timedreceive 183
+#define __NR_mq_notify 184
+#define __NR_mq_getsetattr 185
+#define __NR_msgget 186
+#define __NR_msgctl 187
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_semget 190
+#define __NR_semctl 191
+#define __NR_semtimedop 192
+#define __NR_semop 193
+#define __NR_shmget 194
+#define __NR_shmctl 195
+#define __NR_shmat 196
+#define __NR_shmdt 197
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_bind 200
+#define __NR_listen 201
+#define __NR_accept 202
+#define __NR_connect 203
+#define __NR_getsockname 204
+#define __NR_getpeername 205
+#define __NR_sendto 206
+#define __NR_recvfrom 207
+#define __NR_setsockopt 208
+#define __NR_getsockopt 209
+#define __NR_shutdown 210
+#define __NR_sendmsg 211
+#define __NR_recvmsg 212
+#define __NR_readahead 213
+#define __NR_brk 214
+#define __NR_munmap 215
+#define __NR_mremap 216
+#define __NR_add_key 217
+#define __NR_request_key 218
+#define __NR_keyctl 219
+#define __NR_clone 220
+#define __NR_execve 221
+#define __NR3264_mmap 222
+#define __NR3264_fadvise64 223
+#define __NR_swapon 224
+#define __NR_swapoff 225
+#define __NR_mprotect 226
+#define __NR_msync 227
+#define __NR_mlock 228
+#define __NR_munlock 229
+#define __NR_mlockall 230
+#define __NR_munlockall 231
+#define __NR_mincore 232
+#define __NR_madvise 233
+#define __NR_remap_file_pages 234
+#define __NR_mbind 235
+#define __NR_get_mempolicy 236
+#define __NR_set_mempolicy 237
+#define __NR_migrate_pages 238
+#define __NR_move_pages 239
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_perf_event_open 241
+#define __NR_accept4 242
+#define __NR_recvmmsg 243
+#define __NR_arch_specific_syscall 244
+#define __NR_wait4 260
+#define __NR_prlimit64 261
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_name_to_handle_at 264
+#define __NR_open_by_handle_at 265
+#define __NR_clock_adjtime 266
+#define __NR_syncfs 267
+#define __NR_setns 268
+#define __NR_sendmmsg 269
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_kcmp 272
+#define __NR_finit_module 273
+#define __NR_sched_setattr 274
+#define __NR_sched_getattr 275
+#define __NR_renameat2 276
+#define __NR_seccomp 277
+#define __NR_getrandom 278
+#define __NR_memfd_create 279
+#define __NR_bpf 280
+#define __NR_execveat 281
+#define __NR_userfaultfd 282
+#define __NR_membarrier 283
+#define __NR_mlock2 284
+#define __NR_copy_file_range 285
+#define __NR_preadv2 286
+#define __NR_pwritev2 287
+#define __NR_pkey_mprotect 288
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_statx 291
+#define __NR_io_pgetevents 292
+#define __NR_rseq 293
+#define __NR_kexec_file_load 294
+#define __NR_pidfd_send_signal 424
+#define __NR_io_uring_setup 425
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+#define __NR_pidfd_open 434
+#define __NR_clone3 435
+#define __NR_close_range 436
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
+#define __NR_faccessat2 439
+#define __NR_process_madvise 440
+#define __NR_fcntl __NR3264_fcntl
+#define __NR_statfs __NR3264_statfs
+#define __NR_fstatfs __NR3264_fstatfs
+#define __NR_truncate __NR3264_truncate
+#define __NR_ftruncate __NR3264_ftruncate
+#define __NR_lseek __NR3264_lseek
+#define __NR_sendfile __NR3264_sendfile
+#define __NR_mmap __NR3264_mmap
+#define __NR_fadvise64 __NR3264_fadvise64
diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
new file mode 100644
index 00000000..5a71d132
--- /dev/null
+++ b/arch/loongarch64/bits/user.h
@@ -0,0 +1,5 @@
+#define ELF_NGREG 45
+#define ELF_NFPREG 33
+
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
new file mode 100644
index 00000000..e0760d9e
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,13 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type " START ", @function\n"
+START ":\n"
+" move $fp, $zero\n"
+" move $a0, $sp\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+" la.local $a1, _DYNAMIC\n"
+" bstrins.d $sp, $zero, 3, 0\n"
+" b " START "_c\n"
+);
diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
new file mode 100644
index 00000000..28fbfcd1
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,11 @@
+static inline uintptr_t __get_tp()
+{
+ uintptr_t tp;
+ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
+ return tp;
+}
+
+#define TLS_ABOVE_TP
+#define GAP_ABOVE_TP 0
+#define DTP_OFFSET 0
+#define MC_PC __pc
diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
new file mode 100644
index 00000000..a4482b48
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,27 @@
+#ifdef __loongarch_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "loongarch64" FP_SUFFIX
+
+#define TPOFF_K 0
+
+#define REL_PLT R_LARCH_JUMP_SLOT
+#define REL_COPY R_LARCH_COPY
+#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
+#define REL_DTPOFF R_LARCH_TLS_DTPREL64
+#define REL_TPOFF R_LARCH_TLS_TPREL64
+#define REL_RELATIVE R_LARCH_RELATIVE
+#define REL_SYMBOLIC R_LARCH_64
+
+#define CRTJMP(pc,sp) __asm__ __volatile__( \
+ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+ ".hidden " #sym "\n" \
+ ".align 8 \n" \
+ " la.local $t1, "#sym" \n" \
+ " move %0, $t1 \n" \
+ : "=r"(*(fp)) : : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..4d5e1885
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+ "$t0", "$t1", "$t2", "$t3", \
+ "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
+
+static inline long __syscall0(long n)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0");
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "=r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall1(long n, long a)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+ register long a6 __asm__("$a6") = g;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_5.10"
+
+#define IPC_64 0
diff --git a/configure b/configure
index 0b966ede..55d179f1 100755
--- a/configure
+++ b/configure
@@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
x86_64-nt64*) ARCH=nt64 ;;
x86_64*) ARCH=x86_64 ;;
+loongarch64*) ARCH=loongarch64 ;;
m68k*) ARCH=m68k ;;
mips64*|mipsisa64*) ARCH=mips64 ;;
mips*) ARCH=mips ;;
@@ -671,6 +672,18 @@ if test "$ARCH" = "aarch64" ; then
trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
fi
+if test "$ARCH" = "loongarch64" ; then
+trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
+printf "checking whether compiler support FCSRs... "
+echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
+if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+printf "yes\n"
+else
+printf "no\n"
+CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
+fi
+fi
+
if test "$ARCH" = "m68k" ; then
if trycppif "__HAVE_68881__" ; then : ;
elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
diff --git a/include/elf.h b/include/elf.h
index 23f2c4bc..7114f262 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -315,7 +315,8 @@ typedef struct {
#define EM_RISCV 243
#define EM_BPF 247
#define EM_CSKY 252
-#define EM_NUM 253
+#define EM_LOONGARCH 258
+#define EM_NUM 259
#define EM_ALPHA 0x9026
@@ -699,6 +700,11 @@ typedef struct {
#define NT_MIPS_FP_MODE 0x801
#define NT_MIPS_MSA 0x802
#define NT_VERSION 1
+#define NT_LOONGARCH_CPUCFG 0xa00
+#define NT_LOONGARCH_CSR 0xa01
+#define NT_LOONGARCH_LSX 0xa02
+#define NT_LOONGARCH_LASX 0xa03
+#define NT_LOONGARCH_LBT 0xa04
@@ -3293,6 +3299,102 @@ enum
#define R_RISCV_SET32 56
#define R_RISCV_32_PCREL 57
+#define EF_LARCH_ABI_MODIFIER_MASK 0x07
+#define EF_LARCH_ABI_SOFT_FLOAT 0x01
+#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
+#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
+#define EF_LARCH_OBJABI_V1 0x40
+
+#define R_LARCH_NONE 0
+#define R_LARCH_32 1
+#define R_LARCH_64 2
+#define R_LARCH_RELATIVE 3
+#define R_LARCH_COPY 4
+#define R_LARCH_JUMP_SLOT 5
+#define R_LARCH_TLS_DTPMOD32 6
+#define R_LARCH_TLS_DTPMOD64 7
+#define R_LARCH_TLS_DTPREL32 8
+#define R_LARCH_TLS_DTPREL64 9
+#define R_LARCH_TLS_TPREL32 10
+#define R_LARCH_TLS_TPREL64 11
+#define R_LARCH_IRELATIVE 12
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_MARK_PCREL 21
+#define R_LARCH_SOP_PUSH_PCREL 22
+#define R_LARCH_SOP_PUSH_ABSOLUTE 23
+#define R_LARCH_SOP_PUSH_DUP 24
+#define R_LARCH_SOP_PUSH_GPREL 25
+#define R_LARCH_SOP_PUSH_TLS_TPREL 26
+#define R_LARCH_SOP_PUSH_TLS_GOT 27
+#define R_LARCH_SOP_PUSH_TLS_GD 28
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#define R_LARCH_SOP_ASSERT 30
+#define R_LARCH_SOP_NOT 31
+#define R_LARCH_SOP_SUB 32
+#define R_LARCH_SOP_SL 33
+#define R_LARCH_SOP_SR 34
+#define R_LARCH_SOP_ADD 35
+#define R_LARCH_SOP_AND 36
+#define R_LARCH_SOP_IF_ELSE 37
+#define R_LARCH_SOP_POP_32_S_10_5 38
+#define R_LARCH_SOP_POP_32_U_10_12 39
+#define R_LARCH_SOP_POP_32_S_10_12 40
+#define R_LARCH_SOP_POP_32_S_10_16 41
+#define R_LARCH_SOP_POP_32_S_10_16_S2 42
+#define R_LARCH_SOP_POP_32_S_5_20 43
+#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
+#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
+#define R_LARCH_SOP_POP_32_U 46
+#define R_LARCH_ADD8 47
+#define R_LARCH_ADD16 48
+#define R_LARCH_ADD24 49
+#define R_LARCH_ADD32 50
+#define R_LARCH_ADD64 51
+#define R_LARCH_SUB8 52
+#define R_LARCH_SUB16 53
+#define R_LARCH_SUB24 54
+#define R_LARCH_SUB32 55
+#define R_LARCH_SUB64 56
+#define R_LARCH_GNU_VTINHERIT 57
+#define R_LARCH_GNU_VTENTRY 58
+#define R_LARCH_B16 64
+#define R_LARCH_B21 65
+#define R_LARCH_B26 66
+#define R_LARCH_ABS_HI20 67
+#define R_LARCH_ABS_LO12 68
+#define R_LARCH_ABS64_LO20 69
+#define R_LARCH_ABS64_HI12 70
+#define R_LARCH_PCALA_HI20 71
+#define R_LARCH_PCALA_LO12 72
+#define R_LARCH_PCALA64_LO20 73
+#define R_LARCH_PCALA64_HI12 74
+#define R_LARCH_GOT_PC_HI20 75
+#define R_LARCH_GOT_PC_LO12 76
+#define R_LARCH_GOT64_PC_LO20 77
+#define R_LARCH_GOT64_PC_HI12 78
+#define R_LARCH_GOT_HI20 79
+#define R_LARCH_GOT_LO12 80
+#define R_LARCH_GOT64_LO20 81
+#define R_LARCH_GOT64_HI12 82
+#define R_LARCH_TLS_LE_HI20 83
+#define R_LARCH_TLS_LE_LO12 84
+#define R_LARCH_TLS_LE64_LO20 85
+#define R_LARCH_TLS_LE64_HI12 86
+#define R_LARCH_TLS_IE_PC_HI20 87
+#define R_LARCH_TLS_IE_PC_LO12 88
+#define R_LARCH_TLS_IE64_PC_LO20 89
+#define R_LARCH_TLS_IE64_PC_HI12 90
+#define R_LARCH_TLS_IE_HI20 91
+#define R_LARCH_TLS_IE_LO12 92
+#define R_LARCH_TLS_IE64_LO20 93
+#define R_LARCH_TLS_IE64_HI12 94
+#define R_LARCH_TLS_LD_PC_HI20 95
+#define R_LARCH_TLS_LD_HI20 96
+#define R_LARCH_TLS_GD_PC_HI20 97
+#define R_LARCH_TLS_GD_HI20 98
+#define R_LARCH_32_PCREL 99
+#define R_LARCH_RELAX 100
+
#ifdef __cplusplus
}
#endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..54064e01
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,78 @@
+#ifndef __loongarch_soft_float
+
+#ifdef BROKEN_LOONGARCH_FCSR_ASM
+#define FCSR $r0
+#else
+#define FCSR $fcsr0
+#endif
+
+.global feclearexcept
+.type feclearexcept,@function
+feclearexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global feraiseexcept
+.type feraiseexcept,@function
+feraiseexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fetestexcept
+.type fetestexcept,@function
+fetestexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ and $a0, $t1, $a0
+ jr $ra
+
+.global fegetround
+.type fegetround,@function
+fegetround:
+ movfcsr2gr $t0, FCSR
+ andi $a0, $t0, 0x300
+ jr $ra
+
+.global __fesetround
+.hidden __fesetround
+.type __fesetround,@function
+__fesetround:
+ li.w $t0, 0x300
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $t0
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fegetenv
+.type fegetenv,@function
+fegetenv:
+ movfcsr2gr $t0, FCSR
+ st.w $t0, $a0, 0
+ li.w $a0, 0
+ jr $ra
+
+.global fesetenv
+.type fesetenv,@function
+fesetenv:
+ addi.d $t0, $a0, 1
+ beq $t0, $r0, 1f
+ ld.w $t0, $a0, 0
+1: movgr2fcsr FCSR, $t0
+ li.w $a0, 0
+ jr $ra
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..26fabcdb
--- /dev/null
+++ b/src/ldso/loongarch64/dlsym.s
@@ -0,0 +1,7 @@
+.global dlsym
+.hidden __dlsym
+.type dlsym,@function
+dlsym:
+ move $a2, $ra
+ la.global $t0, __dlsym
+ jr $t0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..896d2e26
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,32 @@
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+_longjmp:
+longjmp:
+ ld.d $ra, $a0, 0
+ ld.d $sp, $a0, 8
+ ld.d $r21,$a0, 16
+ ld.d $fp, $a0, 24
+ ld.d $s0, $a0, 32
+ ld.d $s1, $a0, 40
+ ld.d $s2, $a0, 48
+ ld.d $s3, $a0, 56
+ ld.d $s4, $a0, 64
+ ld.d $s5, $a0, 72
+ ld.d $s6, $a0, 80
+ ld.d $s7, $a0, 88
+ ld.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fld.d $fs0, $a0, 104
+ fld.d $fs1, $a0, 112
+ fld.d $fs2, $a0, 120
+ fld.d $fs3, $a0, 128
+ fld.d $fs4, $a0, 136
+ fld.d $fs5, $a0, 144
+ fld.d $fs6, $a0, 152
+ fld.d $fs7, $a0, 160
+#endif
+ sltui $a0, $a1, 1
+ add.d $a0, $a0, $a1
+ jr $ra
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..d158a3d2
--- /dev/null
+++ b/src/setjmp/loongarch64/setjmp.S
@@ -0,0 +1,34 @@
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+__setjmp:
+_setjmp:
+setjmp:
+ st.d $ra, $a0, 0
+ st.d $sp, $a0, 8
+ st.d $r21,$a0, 16
+ st.d $fp, $a0, 24
+ st.d $s0, $a0, 32
+ st.d $s1, $a0, 40
+ st.d $s2, $a0, 48
+ st.d $s3, $a0, 56
+ st.d $s4, $a0, 64
+ st.d $s5, $a0, 72
+ st.d $s6, $a0, 80
+ st.d $s7, $a0, 88
+ st.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fst.d $fs0, $a0, 104
+ fst.d $fs1, $a0, 112
+ fst.d $fs2, $a0, 120
+ fst.d $fs3, $a0, 128
+ fst.d $fs4, $a0, 136
+ fst.d $fs5, $a0, 144
+ fst.d $fs6, $a0, 152
+ fst.d $fs7, $a0, 160
+#endif
+ move $a0, $zero
+ jr $ra
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..f8e6daeb
--- /dev/null
+++ b/src/signal/loongarch64/restore.s
@@ -0,0 +1,10 @@
+.global __restore_rt
+.global __restore
+.hidden __restore_rt
+.hidden __restore
+.type __restore_rt,@function
+.type __restore,@function
+__restore_rt:
+__restore:
+ li.w $a7, 139
+ syscall 0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..992ab1a4
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,25 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type sigsetjmp,@function
+.type __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+ beq $a1, $zero, 1f
+ st.d $ra, $a0, 168
+ st.d $s0, $a0, 176
+ move $s0, $a0
+
+ la.global $t0, setjmp
+ jirl $ra, $t0, 0
+
+ move $a1, $a0 # Return from 'setjmp' or 'longjmp'
+ move $a0, $s0
+ ld.d $ra, $a0, 168
+ ld.d $s0, $a0, 176
+
+.hidden __sigsetjmp_tail
+ la.global $t0, __sigsetjmp_tail
+ jr $t0
+1:
+ la.global $t0, setjmp
+ jr $t0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..ffdd52f1
--- /dev/null
+++ b/src/thread/loongarch64/__set_thread_area.s
@@ -0,0 +1,7 @@
+.global __set_thread_area
+.hidden __set_thread_area
+.type __set_thread_area,@function
+__set_thread_area:
+ move $tp, $a0
+ move $a0, $zero
+ jr $ra
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..1de334af
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global __unmapself
+.type __unmapself, @function
+__unmapself:
+ li.d $a7, 215 # call munmap
+ syscall 0
+ li.d $a7, 93 # call exit
+ syscall 0
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..db9015e6
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,28 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+# a0, a1, a2, a3, a4, a5, a6
+# sys_clone(flags, stack, ptid, ctid, tls)
+# a0, a1, a2, a3, a4
+
+.global __clone
+.hidden __clone
+.type __clone,@function
+__clone:
+ # Save function pointer and argument pointer on new thread stack
+ addi.d $a1, $a1, -16
+ st.d $a0, $a1, 0 # save function pointer
+ st.d $a3, $a1, 8 # save argument pointer
+ or $a0, $a2, $zero
+ or $a2, $a4, $zero
+ or $a3, $a6, $zero
+ or $a4, $a5, $zero
+ ori $a7, $zero, 220
+ syscall 0 # call clone
+
+ beqz $a0, 1f # whether child process
+ jirl $zero, $ra, 0 # parent process return
+1:
+ ld.d $t8, $sp, 0 # function pointer
+ ld.d $a0, $sp, 8 # argument pointer
+ jirl $ra, $t8, 0 # call the user's function
+ ori $a7, $zero, 93
+ syscall 0 # child process exit
diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
new file mode 100644
index 00000000..0fbc7a47
--- /dev/null
+++ b/src/thread/loongarch64/syscall_cp.s
@@ -0,0 +1,29 @@
+.global __cp_begin
+.hidden __cp_begin
+.global __cp_end
+.hidden __cp_end
+.global __cp_cancel
+.hidden __cp_cancel
+.hidden __cancel
+.global __syscall_cp_asm
+.hidden __syscall_cp_asm
+.type __syscall_cp_asm,@function
+
+__syscall_cp_asm:
+__cp_begin:
+ ld.w $a0, $a0, 0
+ bnez $a0, __cp_cancel
+ move $t8, $a1 # reserve system call number
+ move $a0, $a2
+ move $a1, $a3
+ move $a2, $a4
+ move $a3, $a5
+ move $a4, $a6
+ move $a5, $a7
+ move $a7, $t8
+ syscall 0
+__cp_end:
+ jr $ra
+__cp_cancel:
+ la.local $t8, __cancel
+ jr $t8
--
2.20.1
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v8.
2023-09-26 3:28 ` [musl] add loongarch64 port v8 Hongliang Wang
@ 2023-10-08 3:05 ` 花静云
2023-11-09 13:15 ` Jingyun Hua
1 sibling, 0 replies; 35+ messages in thread
From: 花静云 @ 2023-10-08 3:05 UTC (permalink / raw)
To: musl
[-- Attachment #1: Type: text/plain, Size: 12777 bytes --]
Hi,
Some time ago, I was working on porting the Alpine system to
the LoongArch64 architecture. I applied the v7 patch to musl
and built a runnable Alpine build system.
Recently, I updated the patch to v8 and continued to reconstruct
the Alpine system packages. So far, everything is working fine.
Is there anything that needs to be modified for the v8 patch?
Best wishes,
Jingyun Hua
> -----原始邮件-----
> 发件人: "Hongliang Wang" <wanghongliang@loongson.cn>
> 发送时间:2023-09-26 11:28:27 (星期二)
> 收件人: musl@lists.openwall.com
> 主题: [musl] add loongarch64 port v8.
>
> Hi,
>
> I have fixed the issues listed below, and post
> 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
> please review again, if there are anything that need to be modified,
> please point out, thank you.
>
> Hongliang Wang
>
> 在 2023/9/22 上午9:37, Hongliang Wang 写道:
> > Hi,
> >
> > Thank you for your review, I will modify it according to the review
> > suggestions and post v8 patch later.
> >
> > Hongliang Wang
> >
> > 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
> >> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
> >>> Sorry to bother you, but I just want to know if there is any progress on
> >>> this, because Alpine is blocking by this patch for a long time. As
> >>> Hongliang
> >>> has explained questions you mentioned one by one, if any question
> >>> need to be
> >>> discussed, please point them out, so that the patch can be handled
> >>> further.
> >>
> >> i think you should post a v8 patch to move
> >> this forward. (not on github, but here)
> >>
> >>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
> >>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
> >>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
> >>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> >>>>>> -+#define __BYTE_ORDER 1234
> >>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
> >>>>>
> >>>>> This is gratuitous, mismatches what is done on other archs, and is
> >>>>> less safe.
> >>>>>
> >>>> The modification is based on the following review suggestion(
> >>>> WANG Xuerui <i@xen0n.name> reviewed in
> >>>> https://www.openwall.com/lists/musl/2022/10/12/1):
> >>>>
> >>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
> >>>> with other arches.
> >>
> >> please use 1234.
>
> --- a/arch/loongarch64/bits/alltypes.h.in
> +++ b/arch/loongarch64/bits/alltypes.h.in
> @@ -2,7 +2,7 @@
> #define _Int64 long
> #define _Reg long
>
> -#define __BYTE_ORDER __LITTLE_ENDIAN
> +#define __BYTE_ORDER 1234
> #define __LONG_MAX 0x7fffffffffffffffL
>
>
> >>
> >>>>>> -+TYPEDEF unsigned nlink_t;
> >>>>>> ++TYPEDEF unsigned int nlink_t;
> >>>>>
> >>>>> Gratuitous and in opposite direction of coding style used elsewhere in
> >>>>> musl. There are a few other instances of this too.
> >>>>>
> >>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
> >>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
> >>>>
> >>>> `unsigned int`? Same for other bare `unsigned` usages.
> >>>>
> >>>> I fixed it to a explicit definition.
> >>
> >> please use plain unsigned, not unsigned int.
>
> --- a/arch/loongarch64/bits/alltypes.h.in
> +++ b/arch/loongarch64/bits/alltypes.h.in
> @@ -2,7 +2,7 @@
>
> -TYPEDEF unsigned int nlink_t;
> +TYPEDEF unsigned nlink_t;
> TYPEDEF int blksize_t;
>
> >>
> >>>>>> -+ register uintptr_t tp __asm__("tp");
> >>>>>> -+ __asm__ ("" : "=r" (tp) );
> >>>>>> ++ uintptr_t tp;
> >>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> >>>>>> + return tp;
> >>>>>
> >>>>> Not clear what the motivation is here. Is it working around a compiler
> >>>>> bug? The original form was more optimal.
> >>>>
> >>>> The modification is based on the following review suggestion(
> >>>> WANG Xuerui <i@xen0n.name> reviewed in
> >>>> https://www.openwall.com/lists/musl/2022/10/12/1):
> >>>>
> >>>> While the current approach works, it's a bit fragile [1], and
> >>>> the simple and plain riscv version works too:
> >>>>
> >>>> uintptr_t tp;
> >>>> __asm__ ("move %0, $tp" : "=r"(tp));
> >>>>
> >>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
> >>>>
> >>
> >> this looks ok to me.
> >>
> >> (original code looks sketchy to me.)
> >>
> >>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> >>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> >>>>>> -+
> >>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> >>>>>> -+ ".hidden " #sym "\n" \
> >>>>>> -+ ".align 8 \n" \
> >>>>>> -+ " la.local $t1, "#sym" \n" \
> >>>>>> -+ " move %0, $t1 \n" \
> >>>>>> -+ : "=r"(*(fp)) : : "memory" )
> >>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> >>>>>
> >>>>> Not clear why this was changed. It was never discussed afaik. It looks
> >>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
> >>>>> default definition.
> >>>>>
> >>>> Based on the following review question(
> >>>> WANG Xuerui <i@xen0n.name> reviewed
> >>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
> >>>>
> >>>> Does the generic version residing in ldso/dlstart.c not work?
> >>>>
> >>>> I found the code logic is consistent with the generic version, So
> >>>> I removed the definition here and replaced it with generic version.
> >>
> >> i would change it back to the asm.
> >>
> >> generic version should work, but maybe we don't
> >> want to trust the compiler here (there may be
> >> ways to compile the generic code that is not
> >> compatible with incompletely relocated libc.so)
> >> the asm is safer.
> >>
> --- a/arch/loongarch64/reloc.h
> +++ b/arch/loongarch64/reloc.h
> @@ -18,3 +18,10 @@
>
> #define CRTJMP(pc,sp) __asm__ __volatile__( \
> "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> +
> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> + ".hidden " #sym "\n" \
> + ".align 8 \n" \
> + " la.local $t1, "#sym" \n" \
> + " move %0, $t1 \n" \
> + : "=r"(*(fp)) : : "memory" )
>
> >>>>> It also looks like v5->v6 rewrote sigsetjmp.
> >>>>>
> >>>> Based on the following review question(
> >>>> WANG Xuerui <i@xen0n.name> reviewed
> >>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
> >>>>
> >>>> This is crazy complicated compared to the riscv port, why is the
> >>>> juggling between a0/a1 and t5/t6 necessary?
> >>>>
> >>>> I optimized the code implementations.
> >>
> >> this should be ok.
> >>
> >>>>> v6->v7:
> >>>>>
> >>>>> sigcontext/mcontext_t change mostly makes sense, but the
> >>>>> namespace-safe and full mcontext_t differ in their use of the aligned
> >>>>> attribute and it's not clear that the attribute is needed (since the
> >>>>> offset is naturally aligned and any instance of the object is produced
> >>>>> by the kernel, not by userspace).
> >>>>>
> >>>>>> -+ long __uc_pad;
> >>>>>
> >>>>> This change to ucontext_t actually makes the struct ABI-incompatible
> >>>>> in the namespace-safe version without the alignment attribute. IIRC I
> >>>>> explicitly requested the explicit padding field to avoid this kind of
> >>>>> footgun. Removing it does not seem like a good idea.
> >>>>>
> >>>> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
> >>>> Now, we added __attribute__((__aligned__(16))) to
> >>>> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16 byte
> >>>> alignment. so __uc_pad is not used.
> >>>>
> >>>> Remove __uc_pad, from the point of struct layout, musl and kernel are
> >>>> consistent. otherwise, I think it may bring a sense of inconsistency
> >>>> between kernel and musl. Due to Loongarch is not merged into musl now,
> >>>> Remove it no compatibility issues.
> >>
> >> please add back the padding field.
>
> --- a/arch/loongarch64/bits/signal.h
> +++ b/arch/loongarch64/bits/signal.h
> @@ -40,6 +40,7 @@ typedef struct __ucontext
> struct __ucontext *uc_link;
> stack_t uc_stack;
> sigset_t uc_sigmask;
> + long __uc_pad;
> mcontext_t uc_mcontext;
> } ucontext_t;
>
> >>
> >>>>> In stat.h:
> >>>>>
> >>>>>> -+ unsigned long __pad;
> >>>>>> ++ unsigned long __pad1;
> >>>>>
> >>>>> This is gratuitous and makes the definition gratuitously mismatch what
> >>>>> will become the "generic" version of bits/stat.h. There is no contract
> >>>>> for applications to be able to access these padding fields by name, so
> >>>>> no motivation to make their names match glibc's names or the kernel's.
> >>>>>
> >>>> OK.
> >>
> >> please fix it.
>
> --- a/arch/loongarch64/bits/stat.h
> +++ b/arch/loongarch64/bits/stat.h
> @@ -6,7 +6,7 @@ struct stat {
> uid_t st_uid;
> gid_t st_gid;
> dev_t st_rdev;
> - unsigned long __pad1;
> + unsigned long __pad;
> off_t st_size;
> blksize_t st_blksize;
> int __pad2;
>
> >>
> >>>>> In fenv.S:
> >>>>>
> >>>>>> ++#ifdef __clang__
> >>>>>> ++#define FCSR $fcsr0
> >>>>>> ++#else
> >>>>>> ++#define FCSR $r0
> >>>>>> ++#endif
> >>>>>
> >>>>> It's not clear to me what's going on here. Is there a clang
> >>>>> incompatibility in the assembler language you're working around? Or
> >>>>> what? If so that seems like a tooling bug that should be fixed.
> >>>>>
> >>>> The GNU assembler cannot correctly recognize $fcsr0, but the
> >>>> LLVM IAS does not have this issue, so make a distinction.
> >>>> This issue has been fixed in GNU assembler 2.41. but for compatible
> >>>> with GNU assembler 2.40 and below, $r0 need reserved.
> >>
> >> it sounds like the correct asm is $fcsr0, so that's
> >> what should be used on all assemblers, not just on
> >> clang as.
> >>
> >> only broken old gnu as should use different syntax.
> >> for this a configure test is needed that adds a
> >> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
> >> and use that for the ifdef.
> >>
> --- a/configure
> +++ b/configure
>
> if test "$ARCH" = "loongarch64" ; then
> trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> +printf "checking whether compiler support FCSRs... "
> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> +printf "yes\n"
> +else
> +printf "no\n"
> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
> +fi
> fi
>
> --- a/src/fenv/loongarch64/fenv.S
> +++ b/src/fenv/loongarch64/fenv.S
> @@ -1,9 +1,9 @@
> #ifndef __loongarch_soft_float
>
> -#ifdef __clang__
> -#define FCSR $fcsr0
> -#else
> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
> #define FCSR $r0
> +#else
> +#define FCSR $fcsr0
> #endif
>
> .global feclearexcept
>
> >>>>
> >>>> The linux kernel also has a similar distinction:
> >>>>
> >>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> >>>> Author: WANG Xuerui <git@xen0n.name>
> >>>> Date: Thu Jun 29 20:58:43 2023 +0800
> >>>>
> >>>> LoongArch: Prepare for assemblers with proper FCSR class support
> >>>>
> >>>> The GNU assembler (as of 2.40) mis-treats FCSR operands as
> >>>> GPRs, but
> >>>> the LLVM IAS does not. Probe for this and refer to FCSRs
> >>>> as"$fcsrNN"
> >>>> if support is present.
> >>>>
> >>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
> >>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
> >>>>
> >>>>> Otherwise, everything looks as expected, I think. I'm okay with making
> >>>>> any fixups for merging rather than throwing this back on your team for
> >>>>> more revisions, but can you please follow up and clarify the above?
> >>
> >> all issues look minor.
> >>
> >> if you post a v8 it likely gets into a release faster.
> >>
本邮件及其附件含有龙芯中科的商业秘密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制或散发）本邮件及其附件中的信息。如果您错收本邮件，请您立即电话或邮件通知发件人并删除本邮件。
This email and its attachments contain confidential information from Loongson Technology , which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this email in error, please notify the sender by phone or email immediately and delete it.
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: 0001-add-loongarch64-port-v8.patch --]
[-- Type: text/x-patch; name=0001-add-loongarch64-port-v8.patch, Size: 46412 bytes --]
From 2a69b18ed2ef0f85d4180bcff7e1f9e8b7d1ba8c Mon Sep 17 00:00:00 2001
From: Hongliang Wang <wanghongliang@loongson.cn>
Date: Tue, 26 Sep 2023 09:12:01 +0800
Subject: [PATCH] add loongarch64 port v8.
Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Author: Meidan Li <limeidan@loongson.cn>
Author: Guoqi Chen <chenguoqi@loongson.cn>
Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Author: Fan peng <fanpeng@loongson.cn>
Author: Jiantao Shan <shanjiantao@loongson.cn>
Author: Xuhui Qiang <qiangxuhui@loongson.cn>
Author: Jingyun Hua <huajingyun@loongson.cn>
Author: Liu xue <liuxue@loongson.cn>
Author: Hongliang Wang <wanghongliang@loongson.cn>
Signed-off-by: Hongliang Wang <wanghongliang@loongson.cn>
---
arch/loongarch64/atomic_arch.h | 53 ++++
arch/loongarch64/bits/alltypes.h.in | 18 ++
arch/loongarch64/bits/fenv.h | 20 ++
arch/loongarch64/bits/float.h | 16 ++
arch/loongarch64/bits/posix.h | 2 +
arch/loongarch64/bits/ptrace.h | 4 +
arch/loongarch64/bits/reg.h | 2 +
arch/loongarch64/bits/setjmp.h | 1 +
arch/loongarch64/bits/signal.h | 92 +++++++
arch/loongarch64/bits/stat.h | 18 ++
arch/loongarch64/bits/stdint.h | 20 ++
arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
arch/loongarch64/bits/user.h | 5 +
arch/loongarch64/crt_arch.h | 13 +
arch/loongarch64/pthread_arch.h | 11 +
arch/loongarch64/reloc.h | 27 ++
arch/loongarch64/syscall_arch.h | 137 ++++++++++
configure | 13 +
include/elf.h | 104 ++++++-
src/fenv/loongarch64/fenv.S | 78 ++++++
src/ldso/loongarch64/dlsym.s | 7 +
src/setjmp/loongarch64/longjmp.S | 32 +++
src/setjmp/loongarch64/setjmp.S | 34 +++
src/signal/loongarch64/restore.s | 10 +
src/signal/loongarch64/sigsetjmp.s | 25 ++
src/thread/loongarch64/__set_thread_area.s | 7 +
src/thread/loongarch64/__unmapself.s | 7 +
src/thread/loongarch64/clone.s | 28 ++
src/thread/loongarch64/syscall_cp.s | 29 ++
29 files changed, 1115 insertions(+), 1 deletion(-)
create mode 100644 arch/loongarch64/atomic_arch.h
create mode 100644 arch/loongarch64/bits/alltypes.h.in
create mode 100644 arch/loongarch64/bits/fenv.h
create mode 100644 arch/loongarch64/bits/float.h
create mode 100644 arch/loongarch64/bits/posix.h
create mode 100644 arch/loongarch64/bits/ptrace.h
create mode 100644 arch/loongarch64/bits/reg.h
create mode 100644 arch/loongarch64/bits/setjmp.h
create mode 100644 arch/loongarch64/bits/signal.h
create mode 100644 arch/loongarch64/bits/stat.h
create mode 100644 arch/loongarch64/bits/stdint.h
create mode 100644 arch/loongarch64/bits/syscall.h.in
create mode 100644 arch/loongarch64/bits/user.h
create mode 100644 arch/loongarch64/crt_arch.h
create mode 100644 arch/loongarch64/pthread_arch.h
create mode 100644 arch/loongarch64/reloc.h
create mode 100644 arch/loongarch64/syscall_arch.h
create mode 100644 src/fenv/loongarch64/fenv.S
create mode 100644 src/ldso/loongarch64/dlsym.s
create mode 100644 src/setjmp/loongarch64/longjmp.S
create mode 100644 src/setjmp/loongarch64/setjmp.S
create mode 100644 src/signal/loongarch64/restore.s
create mode 100644 src/signal/loongarch64/sigsetjmp.s
create mode 100644 src/thread/loongarch64/__set_thread_area.s
create mode 100644 src/thread/loongarch64/__unmapself.s
create mode 100644 src/thread/loongarch64/clone.s
create mode 100644 src/thread/loongarch64/syscall_cp.s
diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
new file mode 100644
index 00000000..2225d027
--- /dev/null
+++ b/arch/loongarch64/atomic_arch.h
@@ -0,0 +1,53 @@
+#define a_ll a_ll
+static inline int a_ll(volatile int *p)
+{
+ int v;
+ __asm__ __volatile__ (
+ "ll.w %0, %1"
+ : "=r"(v)
+ : "ZC"(*p));
+ return v;
+}
+
+#define a_sc a_sc
+static inline int a_sc(volatile int *p, int v)
+{
+ int r;
+ __asm__ __volatile__ (
+ "sc.w %0, %1"
+ : "=r"(r), "=ZC"(*p)
+ : "0"(v) : "memory");
+ return r;
+}
+
+#define a_ll_p a_ll_p
+static inline void *a_ll_p(volatile void *p)
+{
+ void *v;
+ __asm__ __volatile__ (
+ "ll.d %0, %1"
+ : "=r"(v)
+ : "ZC"(*(void *volatile *)p));
+ return v;
+}
+
+#define a_sc_p a_sc_p
+static inline int a_sc_p(volatile void *p, void *v)
+{
+ long r;
+ __asm__ __volatile__ (
+ "sc.d %0, %1"
+ : "=r"(r), "=ZC"(*(void *volatile *)p)
+ : "0"(v)
+ : "memory");
+ return r;
+}
+
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("dbar 0" : : : "memory");
+}
+
+#define a_pre_llsc a_barrier
+#define a_post_llsc a_barrier
diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
new file mode 100644
index 00000000..06db4096
--- /dev/null
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -0,0 +1,18 @@
+#define _Addr long
+#define _Int64 long
+#define _Reg long
+
+#define __BYTE_ORDER 1234
+#define __LONG_MAX 0x7fffffffffffffffL
+
+#ifndef __cplusplus
+TYPEDEF int wchar_t;
+#endif
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
+
+TYPEDEF unsigned nlink_t;
+TYPEDEF int blksize_t;
diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
new file mode 100644
index 00000000..99e916e1
--- /dev/null
+++ b/arch/loongarch64/bits/fenv.h
@@ -0,0 +1,20 @@
+#define FE_INEXACT 0x010000
+#define FE_UNDERFLOW 0x020000
+#define FE_OVERFLOW 0x040000
+#define FE_DIVBYZERO 0x080000
+#define FE_INVALID 0x100000
+
+#define FE_ALL_EXCEPT 0x1F0000
+
+#define FE_TONEAREST 0x000
+#define FE_TOWARDZERO 0x100
+#define FE_UPWARD 0x200
+#define FE_DOWNWARD 0x300
+
+typedef unsigned fexcept_t;
+
+typedef struct {
+ unsigned int __cw;
+} fenv_t;
+
+#define FE_DFL_ENV ((const fenv_t *) -1)
diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
new file mode 100644
index 00000000..63e86d44
--- /dev/null
+++ b/arch/loongarch64/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
+#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
+#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
+#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+
+#define LDBL_MANT_DIG 113
+#define LDBL_MIN_EXP (-16381)
+#define LDBL_MAX_EXP 16384
+
+#define LDBL_DIG 33
+#define LDBL_MIN_10_EXP (-4931)
+#define LDBL_MAX_10_EXP 4932
+
+#define DECIMAL_DIG 36
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..c37b94c1
--- /dev/null
+++ b/arch/loongarch64/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_LP64_OFF64 1
+#define _POSIX_V7_LP64_OFF64 1
diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
new file mode 100644
index 00000000..dce2fa51
--- /dev/null
+++ b/arch/loongarch64/bits/ptrace.h
@@ -0,0 +1,4 @@
+#define PTRACE_GET_THREAD_AREA 25
+#define PTRACE_SET_THREAD_AREA 26
+#define PTRACE_GET_WATCH_REGS 0xd0
+#define PTRACE_SET_WATCH_REGS 0xd1
diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
new file mode 100644
index 00000000..2633f39d
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,2 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..4bfa374d
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long __jmp_buf[23];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..e1d256e7
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,92 @@
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define MINSIGSTKSZ 4096
+#define SIGSTKSZ 16384
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef unsigned long greg_t, gregset_t[32];
+
+struct sigcontext {
+ unsigned long sc_pc;
+ unsigned long sc_regs[32];
+ unsigned int sc_flags;
+ unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
+};
+
+typedef struct {
+ unsigned long __pc;
+ unsigned long __gregs[32];
+ unsigned int __flags;
+ unsigned long __extcontext[] __attribute__((__aligned__(16)));
+} mcontext_t;
+#else
+typedef struct {
+ unsigned long __space[34];
+} mcontext_t;
+#endif
+
+struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+};
+
+typedef struct __ucontext
+{
+ unsigned long __uc_flags;
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ sigset_t uc_sigmask;
+ long __uc_pad;
+ mcontext_t uc_mcontext;
+} ucontext_t;
+
+#define SA_NOCLDSTOP 1
+#define SA_NOCLDWAIT 2
+#define SA_SIGINFO 4
+#define SA_ONSTACK 0x08000000
+#define SA_RESTART 0x10000000
+#define SA_NODEFER 0x40000000
+#define SA_RESETHAND 0x80000000
+#define SA_RESTORER 0x0
+
+#endif
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT SIGABRT
+#define SIGBUS 7
+#define SIGFPE 8
+#define SIGKILL 9
+#define SIGUSR1 10
+#define SIGSEGV 11
+#define SIGUSR2 12
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGTERM 15
+#define SIGSTKFLT 16
+#define SIGCHLD 17
+#define SIGCONT 18
+#define SIGSTOP 19
+#define SIGTSTP 20
+#define SIGTTIN 21
+#define SIGTTOU 22
+#define SIGURG 23
+#define SIGXCPU 24
+#define SIGXFSZ 25
+#define SIGVTALRM 26
+#define SIGPROF 27
+#define SIGWINCH 28
+#define SIGIO 29
+#define SIGPOLL SIGIO
+#define SIGPWR 30
+#define SIGSYS 31
+#define SIGUNUSED SIGSYS
+#define _NSIG 65
diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
new file mode 100644
index 00000000..b7f4221b
--- /dev/null
+++ b/arch/loongarch64/bits/stat.h
@@ -0,0 +1,18 @@
+struct stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ unsigned long __pad;
+ off_t st_size;
+ blksize_t st_blksize;
+ int __pad2;
+ blkcnt_t st_blocks;
+ struct timespec st_atim;
+ struct timespec st_mtim;
+ struct timespec st_ctim;
+ unsigned __unused[2];
+};
diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
new file mode 100644
index 00000000..60c12499
--- /dev/null
+++ b/arch/loongarch64/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST32_MIN INT32_MIN
+
+#define INT_FAST16_MAX INT32_MAX
+#define INT_FAST32_MAX INT32_MAX
+
+#define UINT_FAST16_MAX UINT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN INT64_MIN
+#define INTPTR_MAX INT64_MAX
+#define UINTPTR_MAX UINT64_MAX
+#define PTRDIFF_MIN INT64_MIN
+#define PTRDIFF_MAX INT64_MAX
+#define SIZE_MAX UINT64_MAX
diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
new file mode 100644
index 00000000..0980e533
--- /dev/null
+++ b/arch/loongarch64/bits/syscall.h.in
@@ -0,0 +1,303 @@
+#define __NR_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+#define __NR_setxattr 5
+#define __NR_lsetxattr 6
+#define __NR_fsetxattr 7
+#define __NR_getxattr 8
+#define __NR_lgetxattr 9
+#define __NR_fgetxattr 10
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_flistxattr 13
+#define __NR_removexattr 14
+#define __NR_lremovexattr 15
+#define __NR_fremovexattr 16
+#define __NR_getcwd 17
+#define __NR_lookup_dcookie 18
+#define __NR_eventfd2 19
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR3264_fcntl 25
+#define __NR_inotify_init1 26
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_rm_watch 28
+#define __NR_ioctl 29
+#define __NR_ioprio_set 30
+#define __NR_ioprio_get 31
+#define __NR_flock 32
+#define __NR_mknodat 33
+#define __NR_mkdirat 34
+#define __NR_unlinkat 35
+#define __NR_symlinkat 36
+#define __NR_linkat 37
+#define __NR_umount2 39
+#define __NR_mount 40
+#define __NR_pivot_root 41
+#define __NR_nfsservctl 42
+#define __NR3264_statfs 43
+#define __NR3264_fstatfs 44
+#define __NR3264_truncate 45
+#define __NR3264_ftruncate 46
+#define __NR_fallocate 47
+#define __NR_faccessat 48
+#define __NR_chdir 49
+#define __NR_fchdir 50
+#define __NR_chroot 51
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchownat 54
+#define __NR_fchown 55
+#define __NR_openat 56
+#define __NR_close 57
+#define __NR_vhangup 58
+#define __NR_pipe2 59
+#define __NR_quotactl 60
+#define __NR_getdents64 61
+#define __NR3264_lseek 62
+#define __NR_read 63
+#define __NR_write 64
+#define __NR_readv 65
+#define __NR_writev 66
+#define __NR_pread64 67
+#define __NR_pwrite64 68
+#define __NR_preadv 69
+#define __NR_pwritev 70
+#define __NR3264_sendfile 71
+#define __NR_pselect6 72
+#define __NR_ppoll 73
+#define __NR_signalfd4 74
+#define __NR_vmsplice 75
+#define __NR_splice 76
+#define __NR_tee 77
+#define __NR_readlinkat 78
+#define __NR_sync 81
+#define __NR_fsync 82
+#define __NR_fdatasync 83
+#define __NR_sync_file_range 84
+#define __NR_timerfd_create 85
+#define __NR_timerfd_settime 86
+#define __NR_timerfd_gettime 87
+#define __NR_utimensat 88
+#define __NR_acct 89
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_personality 92
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_waitid 95
+#define __NR_set_tid_address 96
+#define __NR_unshare 97
+#define __NR_futex 98
+#define __NR_set_robust_list 99
+#define __NR_get_robust_list 100
+#define __NR_nanosleep 101
+#define __NR_getitimer 102
+#define __NR_setitimer 103
+#define __NR_kexec_load 104
+#define __NR_init_module 105
+#define __NR_delete_module 106
+#define __NR_timer_create 107
+#define __NR_timer_gettime 108
+#define __NR_timer_getoverrun 109
+#define __NR_timer_settime 110
+#define __NR_timer_delete 111
+#define __NR_clock_settime 112
+#define __NR_clock_gettime 113
+#define __NR_clock_getres 114
+#define __NR_clock_nanosleep 115
+#define __NR_syslog 116
+#define __NR_ptrace 117
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_getscheduler 120
+#define __NR_sched_getparam 121
+#define __NR_sched_setaffinity 122
+#define __NR_sched_getaffinity 123
+#define __NR_sched_yield 124
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_rr_get_interval 127
+#define __NR_restart_syscall 128
+#define __NR_kill 129
+#define __NR_tkill 130
+#define __NR_tgkill 131
+#define __NR_sigaltstack 132
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_setpriority 140
+#define __NR_getpriority 141
+#define __NR_reboot 142
+#define __NR_setregid 143
+#define __NR_setgid 144
+#define __NR_setreuid 145
+#define __NR_setuid 146
+#define __NR_setresuid 147
+#define __NR_getresuid 148
+#define __NR_setresgid 149
+#define __NR_getresgid 150
+#define __NR_setfsuid 151
+#define __NR_setfsgid 152
+#define __NR_times 153
+#define __NR_setpgid 154
+#define __NR_getpgid 155
+#define __NR_getsid 156
+#define __NR_setsid 157
+#define __NR_getgroups 158
+#define __NR_setgroups 159
+#define __NR_uname 160
+#define __NR_sethostname 161
+#define __NR_setdomainname 162
+#define __NR_getrlimit 163
+#define __NR_setrlimit 164
+#define __NR_getrusage 165
+#define __NR_umask 166
+#define __NR_prctl 167
+#define __NR_getcpu 168
+#define __NR_gettimeofday 169
+#define __NR_settimeofday 170
+#define __NR_adjtimex 171
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getuid 174
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getegid 177
+#define __NR_gettid 178
+#define __NR_sysinfo 179
+#define __NR_mq_open 180
+#define __NR_mq_unlink 181
+#define __NR_mq_timedsend 182
+#define __NR_mq_timedreceive 183
+#define __NR_mq_notify 184
+#define __NR_mq_getsetattr 185
+#define __NR_msgget 186
+#define __NR_msgctl 187
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_semget 190
+#define __NR_semctl 191
+#define __NR_semtimedop 192
+#define __NR_semop 193
+#define __NR_shmget 194
+#define __NR_shmctl 195
+#define __NR_shmat 196
+#define __NR_shmdt 197
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_bind 200
+#define __NR_listen 201
+#define __NR_accept 202
+#define __NR_connect 203
+#define __NR_getsockname 204
+#define __NR_getpeername 205
+#define __NR_sendto 206
+#define __NR_recvfrom 207
+#define __NR_setsockopt 208
+#define __NR_getsockopt 209
+#define __NR_shutdown 210
+#define __NR_sendmsg 211
+#define __NR_recvmsg 212
+#define __NR_readahead 213
+#define __NR_brk 214
+#define __NR_munmap 215
+#define __NR_mremap 216
+#define __NR_add_key 217
+#define __NR_request_key 218
+#define __NR_keyctl 219
+#define __NR_clone 220
+#define __NR_execve 221
+#define __NR3264_mmap 222
+#define __NR3264_fadvise64 223
+#define __NR_swapon 224
+#define __NR_swapoff 225
+#define __NR_mprotect 226
+#define __NR_msync 227
+#define __NR_mlock 228
+#define __NR_munlock 229
+#define __NR_mlockall 230
+#define __NR_munlockall 231
+#define __NR_mincore 232
+#define __NR_madvise 233
+#define __NR_remap_file_pages 234
+#define __NR_mbind 235
+#define __NR_get_mempolicy 236
+#define __NR_set_mempolicy 237
+#define __NR_migrate_pages 238
+#define __NR_move_pages 239
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_perf_event_open 241
+#define __NR_accept4 242
+#define __NR_recvmmsg 243
+#define __NR_arch_specific_syscall 244
+#define __NR_wait4 260
+#define __NR_prlimit64 261
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_name_to_handle_at 264
+#define __NR_open_by_handle_at 265
+#define __NR_clock_adjtime 266
+#define __NR_syncfs 267
+#define __NR_setns 268
+#define __NR_sendmmsg 269
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_kcmp 272
+#define __NR_finit_module 273
+#define __NR_sched_setattr 274
+#define __NR_sched_getattr 275
+#define __NR_renameat2 276
+#define __NR_seccomp 277
+#define __NR_getrandom 278
+#define __NR_memfd_create 279
+#define __NR_bpf 280
+#define __NR_execveat 281
+#define __NR_userfaultfd 282
+#define __NR_membarrier 283
+#define __NR_mlock2 284
+#define __NR_copy_file_range 285
+#define __NR_preadv2 286
+#define __NR_pwritev2 287
+#define __NR_pkey_mprotect 288
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_statx 291
+#define __NR_io_pgetevents 292
+#define __NR_rseq 293
+#define __NR_kexec_file_load 294
+#define __NR_pidfd_send_signal 424
+#define __NR_io_uring_setup 425
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+#define __NR_pidfd_open 434
+#define __NR_clone3 435
+#define __NR_close_range 436
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
+#define __NR_faccessat2 439
+#define __NR_process_madvise 440
+#define __NR_fcntl __NR3264_fcntl
+#define __NR_statfs __NR3264_statfs
+#define __NR_fstatfs __NR3264_fstatfs
+#define __NR_truncate __NR3264_truncate
+#define __NR_ftruncate __NR3264_ftruncate
+#define __NR_lseek __NR3264_lseek
+#define __NR_sendfile __NR3264_sendfile
+#define __NR_mmap __NR3264_mmap
+#define __NR_fadvise64 __NR3264_fadvise64
diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
new file mode 100644
index 00000000..5a71d132
--- /dev/null
+++ b/arch/loongarch64/bits/user.h
@@ -0,0 +1,5 @@
+#define ELF_NGREG 45
+#define ELF_NFPREG 33
+
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
new file mode 100644
index 00000000..e0760d9e
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,13 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type " START ", @function\n"
+START ":\n"
+" move $fp, $zero\n"
+" move $a0, $sp\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+" la.local $a1, _DYNAMIC\n"
+" bstrins.d $sp, $zero, 3, 0\n"
+" b " START "_c\n"
+);
diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
new file mode 100644
index 00000000..28fbfcd1
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,11 @@
+static inline uintptr_t __get_tp()
+{
+ uintptr_t tp;
+ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
+ return tp;
+}
+
+#define TLS_ABOVE_TP
+#define GAP_ABOVE_TP 0
+#define DTP_OFFSET 0
+#define MC_PC __pc
diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
new file mode 100644
index 00000000..a4482b48
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,27 @@
+#ifdef __loongarch_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "loongarch64" FP_SUFFIX
+
+#define TPOFF_K 0
+
+#define REL_PLT R_LARCH_JUMP_SLOT
+#define REL_COPY R_LARCH_COPY
+#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
+#define REL_DTPOFF R_LARCH_TLS_DTPREL64
+#define REL_TPOFF R_LARCH_TLS_TPREL64
+#define REL_RELATIVE R_LARCH_RELATIVE
+#define REL_SYMBOLIC R_LARCH_64
+
+#define CRTJMP(pc,sp) __asm__ __volatile__( \
+ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+ ".hidden " #sym "\n" \
+ ".align 8 \n" \
+ " la.local $t1, "#sym" \n" \
+ " move %0, $t1 \n" \
+ : "=r"(*(fp)) : : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..4d5e1885
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+ "$t0", "$t1", "$t2", "$t3", \
+ "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
+
+static inline long __syscall0(long n)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0");
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "=r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall1(long n, long a)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+ register long a6 __asm__("$a6") = g;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_5.10"
+
+#define IPC_64 0
diff --git a/configure b/configure
index 0b966ede..55d179f1 100755
--- a/configure
+++ b/configure
@@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
x86_64-nt64*) ARCH=nt64 ;;
x86_64*) ARCH=x86_64 ;;
+loongarch64*) ARCH=loongarch64 ;;
m68k*) ARCH=m68k ;;
mips64*|mipsisa64*) ARCH=mips64 ;;
mips*) ARCH=mips ;;
@@ -671,6 +672,18 @@ if test "$ARCH" = "aarch64" ; then
trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
fi
+if test "$ARCH" = "loongarch64" ; then
+trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
+printf "checking whether compiler support FCSRs... "
+echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
+if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+printf "yes\n"
+else
+printf "no\n"
+CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
+fi
+fi
+
if test "$ARCH" = "m68k" ; then
if trycppif "__HAVE_68881__" ; then : ;
elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
diff --git a/include/elf.h b/include/elf.h
index 23f2c4bc..7114f262 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -315,7 +315,8 @@ typedef struct {
#define EM_RISCV 243
#define EM_BPF 247
#define EM_CSKY 252
-#define EM_NUM 253
+#define EM_LOONGARCH 258
+#define EM_NUM 259
#define EM_ALPHA 0x9026
@@ -699,6 +700,11 @@ typedef struct {
#define NT_MIPS_FP_MODE 0x801
#define NT_MIPS_MSA 0x802
#define NT_VERSION 1
+#define NT_LOONGARCH_CPUCFG 0xa00
+#define NT_LOONGARCH_CSR 0xa01
+#define NT_LOONGARCH_LSX 0xa02
+#define NT_LOONGARCH_LASX 0xa03
+#define NT_LOONGARCH_LBT 0xa04
@@ -3293,6 +3299,102 @@ enum
#define R_RISCV_SET32 56
#define R_RISCV_32_PCREL 57
+#define EF_LARCH_ABI_MODIFIER_MASK 0x07
+#define EF_LARCH_ABI_SOFT_FLOAT 0x01
+#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
+#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
+#define EF_LARCH_OBJABI_V1 0x40
+
+#define R_LARCH_NONE 0
+#define R_LARCH_32 1
+#define R_LARCH_64 2
+#define R_LARCH_RELATIVE 3
+#define R_LARCH_COPY 4
+#define R_LARCH_JUMP_SLOT 5
+#define R_LARCH_TLS_DTPMOD32 6
+#define R_LARCH_TLS_DTPMOD64 7
+#define R_LARCH_TLS_DTPREL32 8
+#define R_LARCH_TLS_DTPREL64 9
+#define R_LARCH_TLS_TPREL32 10
+#define R_LARCH_TLS_TPREL64 11
+#define R_LARCH_IRELATIVE 12
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_MARK_PCREL 21
+#define R_LARCH_SOP_PUSH_PCREL 22
+#define R_LARCH_SOP_PUSH_ABSOLUTE 23
+#define R_LARCH_SOP_PUSH_DUP 24
+#define R_LARCH_SOP_PUSH_GPREL 25
+#define R_LARCH_SOP_PUSH_TLS_TPREL 26
+#define R_LARCH_SOP_PUSH_TLS_GOT 27
+#define R_LARCH_SOP_PUSH_TLS_GD 28
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#define R_LARCH_SOP_ASSERT 30
+#define R_LARCH_SOP_NOT 31
+#define R_LARCH_SOP_SUB 32
+#define R_LARCH_SOP_SL 33
+#define R_LARCH_SOP_SR 34
+#define R_LARCH_SOP_ADD 35
+#define R_LARCH_SOP_AND 36
+#define R_LARCH_SOP_IF_ELSE 37
+#define R_LARCH_SOP_POP_32_S_10_5 38
+#define R_LARCH_SOP_POP_32_U_10_12 39
+#define R_LARCH_SOP_POP_32_S_10_12 40
+#define R_LARCH_SOP_POP_32_S_10_16 41
+#define R_LARCH_SOP_POP_32_S_10_16_S2 42
+#define R_LARCH_SOP_POP_32_S_5_20 43
+#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
+#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
+#define R_LARCH_SOP_POP_32_U 46
+#define R_LARCH_ADD8 47
+#define R_LARCH_ADD16 48
+#define R_LARCH_ADD24 49
+#define R_LARCH_ADD32 50
+#define R_LARCH_ADD64 51
+#define R_LARCH_SUB8 52
+#define R_LARCH_SUB16 53
+#define R_LARCH_SUB24 54
+#define R_LARCH_SUB32 55
+#define R_LARCH_SUB64 56
+#define R_LARCH_GNU_VTINHERIT 57
+#define R_LARCH_GNU_VTENTRY 58
+#define R_LARCH_B16 64
+#define R_LARCH_B21 65
+#define R_LARCH_B26 66
+#define R_LARCH_ABS_HI20 67
+#define R_LARCH_ABS_LO12 68
+#define R_LARCH_ABS64_LO20 69
+#define R_LARCH_ABS64_HI12 70
+#define R_LARCH_PCALA_HI20 71
+#define R_LARCH_PCALA_LO12 72
+#define R_LARCH_PCALA64_LO20 73
+#define R_LARCH_PCALA64_HI12 74
+#define R_LARCH_GOT_PC_HI20 75
+#define R_LARCH_GOT_PC_LO12 76
+#define R_LARCH_GOT64_PC_LO20 77
+#define R_LARCH_GOT64_PC_HI12 78
+#define R_LARCH_GOT_HI20 79
+#define R_LARCH_GOT_LO12 80
+#define R_LARCH_GOT64_LO20 81
+#define R_LARCH_GOT64_HI12 82
+#define R_LARCH_TLS_LE_HI20 83
+#define R_LARCH_TLS_LE_LO12 84
+#define R_LARCH_TLS_LE64_LO20 85
+#define R_LARCH_TLS_LE64_HI12 86
+#define R_LARCH_TLS_IE_PC_HI20 87
+#define R_LARCH_TLS_IE_PC_LO12 88
+#define R_LARCH_TLS_IE64_PC_LO20 89
+#define R_LARCH_TLS_IE64_PC_HI12 90
+#define R_LARCH_TLS_IE_HI20 91
+#define R_LARCH_TLS_IE_LO12 92
+#define R_LARCH_TLS_IE64_LO20 93
+#define R_LARCH_TLS_IE64_HI12 94
+#define R_LARCH_TLS_LD_PC_HI20 95
+#define R_LARCH_TLS_LD_HI20 96
+#define R_LARCH_TLS_GD_PC_HI20 97
+#define R_LARCH_TLS_GD_HI20 98
+#define R_LARCH_32_PCREL 99
+#define R_LARCH_RELAX 100
+
#ifdef __cplusplus
}
#endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..54064e01
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,78 @@
+#ifndef __loongarch_soft_float
+
+#ifdef BROKEN_LOONGARCH_FCSR_ASM
+#define FCSR $r0
+#else
+#define FCSR $fcsr0
+#endif
+
+.global feclearexcept
+.type feclearexcept,@function
+feclearexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global feraiseexcept
+.type feraiseexcept,@function
+feraiseexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fetestexcept
+.type fetestexcept,@function
+fetestexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ and $a0, $t1, $a0
+ jr $ra
+
+.global fegetround
+.type fegetround,@function
+fegetround:
+ movfcsr2gr $t0, FCSR
+ andi $a0, $t0, 0x300
+ jr $ra
+
+.global __fesetround
+.hidden __fesetround
+.type __fesetround,@function
+__fesetround:
+ li.w $t0, 0x300
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $t0
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fegetenv
+.type fegetenv,@function
+fegetenv:
+ movfcsr2gr $t0, FCSR
+ st.w $t0, $a0, 0
+ li.w $a0, 0
+ jr $ra
+
+.global fesetenv
+.type fesetenv,@function
+fesetenv:
+ addi.d $t0, $a0, 1
+ beq $t0, $r0, 1f
+ ld.w $t0, $a0, 0
+1: movgr2fcsr FCSR, $t0
+ li.w $a0, 0
+ jr $ra
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..26fabcdb
--- /dev/null
+++ b/src/ldso/loongarch64/dlsym.s
@@ -0,0 +1,7 @@
+.global dlsym
+.hidden __dlsym
+.type dlsym,@function
+dlsym:
+ move $a2, $ra
+ la.global $t0, __dlsym
+ jr $t0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..896d2e26
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,32 @@
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+_longjmp:
+longjmp:
+ ld.d $ra, $a0, 0
+ ld.d $sp, $a0, 8
+ ld.d $r21,$a0, 16
+ ld.d $fp, $a0, 24
+ ld.d $s0, $a0, 32
+ ld.d $s1, $a0, 40
+ ld.d $s2, $a0, 48
+ ld.d $s3, $a0, 56
+ ld.d $s4, $a0, 64
+ ld.d $s5, $a0, 72
+ ld.d $s6, $a0, 80
+ ld.d $s7, $a0, 88
+ ld.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fld.d $fs0, $a0, 104
+ fld.d $fs1, $a0, 112
+ fld.d $fs2, $a0, 120
+ fld.d $fs3, $a0, 128
+ fld.d $fs4, $a0, 136
+ fld.d $fs5, $a0, 144
+ fld.d $fs6, $a0, 152
+ fld.d $fs7, $a0, 160
+#endif
+ sltui $a0, $a1, 1
+ add.d $a0, $a0, $a1
+ jr $ra
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..d158a3d2
--- /dev/null
+++ b/src/setjmp/loongarch64/setjmp.S
@@ -0,0 +1,34 @@
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+__setjmp:
+_setjmp:
+setjmp:
+ st.d $ra, $a0, 0
+ st.d $sp, $a0, 8
+ st.d $r21,$a0, 16
+ st.d $fp, $a0, 24
+ st.d $s0, $a0, 32
+ st.d $s1, $a0, 40
+ st.d $s2, $a0, 48
+ st.d $s3, $a0, 56
+ st.d $s4, $a0, 64
+ st.d $s5, $a0, 72
+ st.d $s6, $a0, 80
+ st.d $s7, $a0, 88
+ st.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fst.d $fs0, $a0, 104
+ fst.d $fs1, $a0, 112
+ fst.d $fs2, $a0, 120
+ fst.d $fs3, $a0, 128
+ fst.d $fs4, $a0, 136
+ fst.d $fs5, $a0, 144
+ fst.d $fs6, $a0, 152
+ fst.d $fs7, $a0, 160
+#endif
+ move $a0, $zero
+ jr $ra
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..f8e6daeb
--- /dev/null
+++ b/src/signal/loongarch64/restore.s
@@ -0,0 +1,10 @@
+.global __restore_rt
+.global __restore
+.hidden __restore_rt
+.hidden __restore
+.type __restore_rt,@function
+.type __restore,@function
+__restore_rt:
+__restore:
+ li.w $a7, 139
+ syscall 0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..992ab1a4
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,25 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type sigsetjmp,@function
+.type __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+ beq $a1, $zero, 1f
+ st.d $ra, $a0, 168
+ st.d $s0, $a0, 176
+ move $s0, $a0
+
+ la.global $t0, setjmp
+ jirl $ra, $t0, 0
+
+ move $a1, $a0 # Return from 'setjmp' or 'longjmp'
+ move $a0, $s0
+ ld.d $ra, $a0, 168
+ ld.d $s0, $a0, 176
+
+.hidden __sigsetjmp_tail
+ la.global $t0, __sigsetjmp_tail
+ jr $t0
+1:
+ la.global $t0, setjmp
+ jr $t0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..ffdd52f1
--- /dev/null
+++ b/src/thread/loongarch64/__set_thread_area.s
@@ -0,0 +1,7 @@
+.global __set_thread_area
+.hidden __set_thread_area
+.type __set_thread_area,@function
+__set_thread_area:
+ move $tp, $a0
+ move $a0, $zero
+ jr $ra
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..1de334af
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global __unmapself
+.type __unmapself, @function
+__unmapself:
+ li.d $a7, 215 # call munmap
+ syscall 0
+ li.d $a7, 93 # call exit
+ syscall 0
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..db9015e6
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,28 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+# a0, a1, a2, a3, a4, a5, a6
+# sys_clone(flags, stack, ptid, ctid, tls)
+# a0, a1, a2, a3, a4
+
+.global __clone
+.hidden __clone
+.type __clone,@function
+__clone:
+ # Save function pointer and argument pointer on new thread stack
+ addi.d $a1, $a1, -16
+ st.d $a0, $a1, 0 # save function pointer
+ st.d $a3, $a1, 8 # save argument pointer
+ or $a0, $a2, $zero
+ or $a2, $a4, $zero
+ or $a3, $a6, $zero
+ or $a4, $a5, $zero
+ ori $a7, $zero, 220
+ syscall 0 # call clone
+
+ beqz $a0, 1f # whether child process
+ jirl $zero, $ra, 0 # parent process return
+1:
+ ld.d $t8, $sp, 0 # function pointer
+ ld.d $a0, $sp, 8 # argument pointer
+ jirl $ra, $t8, 0 # call the user's function
+ ori $a7, $zero, 93
+ syscall 0 # child process exit
diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
new file mode 100644
index 00000000..0fbc7a47
--- /dev/null
+++ b/src/thread/loongarch64/syscall_cp.s
@@ -0,0 +1,29 @@
+.global __cp_begin
+.hidden __cp_begin
+.global __cp_end
+.hidden __cp_end
+.global __cp_cancel
+.hidden __cp_cancel
+.hidden __cancel
+.global __syscall_cp_asm
+.hidden __syscall_cp_asm
+.type __syscall_cp_asm,@function
+
+__syscall_cp_asm:
+__cp_begin:
+ ld.w $a0, $a0, 0
+ bnez $a0, __cp_cancel
+ move $t8, $a1 # reserve system call number
+ move $a0, $a2
+ move $a1, $a3
+ move $a2, $a4
+ move $a3, $a5
+ move $a4, $a6
+ move $a5, $a7
+ move $a7, $t8
+ syscall 0
+__cp_end:
+ jr $ra
+__cp_cancel:
+ la.local $t8, __cancel
+ jr $t8
--
2.20.1
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v8.
2023-09-26 3:28 ` [musl] add loongarch64 port v8 Hongliang Wang
2023-10-08 3:05 ` 花静云
@ 2023-11-09 13:15 ` Jingyun Hua
2023-11-14 13:16 ` Jingyun Hua
1 sibling, 1 reply; 35+ messages in thread
From: Jingyun Hua @ 2023-11-09 13:15 UTC (permalink / raw)
To: musl
Hi all,
Thank you for taking the time to check this email. I'm very interested
in musl and alpine, and I'd like to know the current status of this
patch and what we can do for it next.
After Hongliang updated this patch from v7 to v8, in order to verify it,
I built the alpine linux from scratch base on this musl v8 patch on the
LoongArch64 machine, and successfully compiled projects such as gcc,
rust, llvm, go, etc.. Currently, more than 8,500 packages have been
built and running normally in my local repository.
The patch has indeed been on hold for a long time. Is it in the
immediate plans? Is there anything that needs to be modified and
improved?
Looking forward to your reply, thanks!
Regards,
Jingyun Hua
在 2023/9/26 上午11:28, Hongliang Wang 写道:
> Hi,
>
> I have fixed the issues listed below, and post
> 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
> please review again, if there are anything that need to be modified,
> please point out, thank you.
>
> Hongliang Wang
>
> 在 2023/9/22 上午9:37, Hongliang Wang 写道:
>> Hi,
>>
>> Thank you for your review, I will modify it according to the review
>> suggestions and post v8 patch later.
>>
>> Hongliang Wang
>>
>> 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
>>> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
>>>> Sorry to bother you, but I just want to know if there is any
>>>> progress on
>>>> this, because Alpine is blocking by this patch for a long time. As
>>>> Hongliang
>>>> has explained questions you mentioned one by one, if any question
>>>> need to be
>>>> discussed, please point them out, so that the patch can be handled
>>>> further.
>>>
>>> i think you should post a v8 patch to move
>>> this forward. (not on github, but here)
>>>
>>>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
>>>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
>>>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>>>>> -+#define __BYTE_ORDER 1234
>>>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>>>
>>>>>> This is gratuitous, mismatches what is done on other archs, and is
>>>>>> less safe.
>>>>>>
>>>>> The modification is based on the following review suggestion(
>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>
>>>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
>>>>> with other arches.
>>>
>>> please use 1234.
>
> --- a/arch/loongarch64/bits/alltypes.h.in
> +++ b/arch/loongarch64/bits/alltypes.h.in
> @@ -2,7 +2,7 @@
> #define _Int64 long
> #define _Reg long
>
> -#define __BYTE_ORDER __LITTLE_ENDIAN
> +#define __BYTE_ORDER 1234
> #define __LONG_MAX 0x7fffffffffffffffL
>
>
>>>
>>>>>>> -+TYPEDEF unsigned nlink_t;
>>>>>>> ++TYPEDEF unsigned int nlink_t;
>>>>>>
>>>>>> Gratuitous and in opposite direction of coding style used
>>>>>> elsewhere in
>>>>>> musl. There are a few other instances of this too.
>>>>>>
>>>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
>>>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>
>>>>> `unsigned int`? Same for other bare `unsigned` usages.
>>>>>
>>>>> I fixed it to a explicit definition.
>>>
>>> please use plain unsigned, not unsigned int.
>
> --- a/arch/loongarch64/bits/alltypes.h.in
> +++ b/arch/loongarch64/bits/alltypes.h.in
> @@ -2,7 +2,7 @@
>
> -TYPEDEF unsigned int nlink_t;
> +TYPEDEF unsigned nlink_t;
> TYPEDEF int blksize_t;
>
>>>
>>>>>>> -+ register uintptr_t tp __asm__("tp");
>>>>>>> -+ __asm__ ("" : "=r" (tp) );
>>>>>>> ++ uintptr_t tp;
>>>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>>>>>> + return tp;
>>>>>>
>>>>>> Not clear what the motivation is here. Is it working around a
>>>>>> compiler
>>>>>> bug? The original form was more optimal.
>>>>>
>>>>> The modification is based on the following review suggestion(
>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>
>>>>> While the current approach works, it's a bit fragile [1], and
>>>>> the simple and plain riscv version works too:
>>>>>
>>>>> uintptr_t tp;
>>>>> __asm__ ("move %0, $tp" : "=r"(tp));
>>>>>
>>>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>>>>>
>>>
>>> this looks ok to me.
>>>
>>> (original code looks sketchy to me.)
>>>
>>>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>> -+
>>>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>>>> -+ ".hidden " #sym "\n" \
>>>>>>> -+ ".align 8 \n" \
>>>>>>> -+ " la.local $t1, "#sym" \n" \
>>>>>>> -+ " move %0, $t1 \n" \
>>>>>>> -+ : "=r"(*(fp)) : : "memory" )
>>>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>
>>>>>> Not clear why this was changed. It was never discussed afaik. It
>>>>>> looks
>>>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>>>>>> default definition.
>>>>>>
>>>>> Based on the following review question(
>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>
>>>>> Does the generic version residing in ldso/dlstart.c not work?
>>>>>
>>>>> I found the code logic is consistent with the generic version, So
>>>>> I removed the definition here and replaced it with generic version.
>>>
>>> i would change it back to the asm.
>>>
>>> generic version should work, but maybe we don't
>>> want to trust the compiler here (there may be
>>> ways to compile the generic code that is not
>>> compatible with incompletely relocated libc.so)
>>> the asm is safer.
>>>
> --- a/arch/loongarch64/reloc.h
> +++ b/arch/loongarch64/reloc.h
> @@ -18,3 +18,10 @@
>
> #define CRTJMP(pc,sp) __asm__ __volatile__( \
> "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> +
> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> + ".hidden " #sym "\n" \
> + ".align 8 \n" \
> + " la.local $t1, "#sym" \n" \
> + " move %0, $t1 \n" \
> + : "=r"(*(fp)) : : "memory" )
>
>>>>>> It also looks like v5->v6 rewrote sigsetjmp.
>>>>>>
>>>>> Based on the following review question(
>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>
>>>>> This is crazy complicated compared to the riscv port, why is the
>>>>> juggling between a0/a1 and t5/t6 necessary?
>>>>>
>>>>> I optimized the code implementations.
>>>
>>> this should be ok.
>>>
>>>>>> v6->v7:
>>>>>>
>>>>>> sigcontext/mcontext_t change mostly makes sense, but the
>>>>>> namespace-safe and full mcontext_t differ in their use of the aligned
>>>>>> attribute and it's not clear that the attribute is needed (since the
>>>>>> offset is naturally aligned and any instance of the object is
>>>>>> produced
>>>>>> by the kernel, not by userspace).
>>>>>>
>>>>>>> -+ long __uc_pad;
>>>>>>
>>>>>> This change to ucontext_t actually makes the struct ABI-incompatible
>>>>>> in the namespace-safe version without the alignment attribute. IIRC I
>>>>>> explicitly requested the explicit padding field to avoid this kind of
>>>>>> footgun. Removing it does not seem like a good idea.
>>>>>>
>>>>> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte alignment.
>>>>> Now, we added __attribute__((__aligned__(16))) to
>>>>> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16 byte
>>>>> alignment. so __uc_pad is not used.
>>>>>
>>>>> Remove __uc_pad, from the point of struct layout, musl and kernel are
>>>>> consistent. otherwise, I think it may bring a sense of inconsistency
>>>>> between kernel and musl. Due to Loongarch is not merged into musl now,
>>>>> Remove it no compatibility issues.
>>>
>>> please add back the padding field.
>
> --- a/arch/loongarch64/bits/signal.h
> +++ b/arch/loongarch64/bits/signal.h
> @@ -40,6 +40,7 @@ typedef struct __ucontext
> struct __ucontext *uc_link;
> stack_t uc_stack;
> sigset_t uc_sigmask;
> + long __uc_pad;
> mcontext_t uc_mcontext;
> } ucontext_t;
>
>>>
>>>>>> In stat.h:
>>>>>>
>>>>>>> -+ unsigned long __pad;
>>>>>>> ++ unsigned long __pad1;
>>>>>>
>>>>>> This is gratuitous and makes the definition gratuitously mismatch
>>>>>> what
>>>>>> will become the "generic" version of bits/stat.h. There is no
>>>>>> contract
>>>>>> for applications to be able to access these padding fields by
>>>>>> name, so
>>>>>> no motivation to make their names match glibc's names or the
>>>>>> kernel's.
>>>>>>
>>>>> OK.
>>>
>>> please fix it.
>
> --- a/arch/loongarch64/bits/stat.h
> +++ b/arch/loongarch64/bits/stat.h
> @@ -6,7 +6,7 @@ struct stat {
> uid_t st_uid;
> gid_t st_gid;
> dev_t st_rdev;
> - unsigned long __pad1;
> + unsigned long __pad;
> off_t st_size;
> blksize_t st_blksize;
> int __pad2;
>
>>>
>>>>>> In fenv.S:
>>>>>>
>>>>>>> ++#ifdef __clang__
>>>>>>> ++#define FCSR $fcsr0
>>>>>>> ++#else
>>>>>>> ++#define FCSR $r0
>>>>>>> ++#endif
>>>>>>
>>>>>> It's not clear to me what's going on here. Is there a clang
>>>>>> incompatibility in the assembler language you're working around? Or
>>>>>> what? If so that seems like a tooling bug that should be fixed.
>>>>>>
>>>>> The GNU assembler cannot correctly recognize $fcsr0, but the
>>>>> LLVM IAS does not have this issue, so make a distinction.
>>>>> This issue has been fixed in GNU assembler 2.41. but for compatible
>>>>> with GNU assembler 2.40 and below, $r0 need reserved.
>>>
>>> it sounds like the correct asm is $fcsr0, so that's
>>> what should be used on all assemblers, not just on
>>> clang as.
>>>
>>> only broken old gnu as should use different syntax.
>>> for this a configure test is needed that adds a
>>> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
>>> and use that for the ifdef.
>>>
> --- a/configure
> +++ b/configure
>
> if test "$ARCH" = "loongarch64" ; then
> trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> +printf "checking whether compiler support FCSRs... "
> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> +printf "yes\n"
> +else
> +printf "no\n"
> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
> +fi
> fi
>
> --- a/src/fenv/loongarch64/fenv.S
> +++ b/src/fenv/loongarch64/fenv.S
> @@ -1,9 +1,9 @@
> #ifndef __loongarch_soft_float
>
> -#ifdef __clang__
> -#define FCSR $fcsr0
> -#else
> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
> #define FCSR $r0
> +#else
> +#define FCSR $fcsr0
> #endif
>
> .global feclearexcept
>
>>>>>
>>>>> The linux kernel also has a similar distinction:
>>>>>
>>>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
>>>>> Author: WANG Xuerui <git@xen0n.name>
>>>>> Date: Thu Jun 29 20:58:43 2023 +0800
>>>>>
>>>>> LoongArch: Prepare for assemblers with proper FCSR class support
>>>>>
>>>>> The GNU assembler (as of 2.40) mis-treats FCSR operands as
>>>>> GPRs, but
>>>>> the LLVM IAS does not. Probe for this and refer to FCSRs
>>>>> as"$fcsrNN"
>>>>> if support is present.
>>>>>
>>>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
>>>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>>>>>
>>>>>> Otherwise, everything looks as expected, I think. I'm okay with
>>>>>> making
>>>>>> any fixups for merging rather than throwing this back on your team
>>>>>> for
>>>>>> more revisions, but can you please follow up and clarify the above?
>>>
>>> all issues look minor.
>>>
>>> if you post a v8 it likely gets into a release faster.
>>>
--
Jingyun Hua
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v8.
2023-11-09 13:15 ` Jingyun Hua
@ 2023-11-14 13:16 ` Jingyun Hua
2023-11-16 2:54 ` [musl] add loongarch64 port v9 Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Jingyun Hua @ 2023-11-14 13:16 UTC (permalink / raw)
To: musl
hi,
I have a suggestion regarding the musl dynamic linker name for the
LoongArch architecture:
The basic ABI types are specified in the ABI document of the LoongArch,
which can be seen:
https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
and the dynamic linker name of glibc distinguishes lp64d, lp64s and
lp64f with abi types.The v8 patch only defines the value of SUBARCH
as "-sf" for “__loongarch_soft_float”, which means that only
“ld-musl-loongarch64.so.1” or “ld-musl-loongarch64-sf.so.1” can be
generated when compiled with the v8 patch.
So I think the musl dynamic linker name for the LoongArch architecture
needs to be modified, maybe defined like glibc?
Regards,
Jingyun Hua
On 11/9/23 9:15 PM, Jingyun Hua wrote:
> Hi all,
>
> Thank you for taking the time to check this email. I'm very interested
> in musl and alpine, and I'd like to know the current status of this
> patch and what we can do for it next.
>
> After Hongliang updated this patch from v7 to v8, in order to verify it,
> I built the alpine linux from scratch base on this musl v8 patch on the
> LoongArch64 machine, and successfully compiled projects such as gcc,
> rust, llvm, go, etc.. Currently, more than 8,500 packages have been
> built and running normally in my local repository.
>
> The patch has indeed been on hold for a long time. Is it in the
> immediate plans? Is there anything that needs to be modified and
> improved?
>
> Looking forward to your reply, thanks!
>
> Regards,
> Jingyun Hua
>
> 在 2023/9/26 上午11:28, Hongliang Wang 写道:
>> Hi,
>>
>> I have fixed the issues listed below, and post
>> 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
>> please review again, if there are anything that need to be modified,
>> please point out, thank you.
>>
>> Hongliang Wang
>>
>> 在 2023/9/22 上午9:37, Hongliang Wang 写道:
>>> Hi,
>>>
>>> Thank you for your review, I will modify it according to the review
>>> suggestions and post v8 patch later.
>>>
>>> Hongliang Wang
>>>
>>> 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
>>>> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
>>>>> Sorry to bother you, but I just want to know if there is any
>>>>> progress on
>>>>> this, because Alpine is blocking by this patch for a long time. As
>>>>> Hongliang
>>>>> has explained questions you mentioned one by one, if any question
>>>>> need to be
>>>>> discussed, please point them out, so that the patch can be handled
>>>>> further.
>>>>
>>>> i think you should post a v8 patch to move
>>>> this forward. (not on github, but here)
>>>>
>>>>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
>>>>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
>>>>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>>>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>>>>>> -+#define __BYTE_ORDER 1234
>>>>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>>>>
>>>>>>> This is gratuitous, mismatches what is done on other archs, and is
>>>>>>> less safe.
>>>>>>>
>>>>>> The modification is based on the following review suggestion(
>>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>
>>>>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
>>>>>> with other arches.
>>>>
>>>> please use 1234.
>>
>> --- a/arch/loongarch64/bits/alltypes.h.in
>> +++ b/arch/loongarch64/bits/alltypes.h.in
>> @@ -2,7 +2,7 @@
>> #define _Int64 long
>> #define _Reg long
>>
>> -#define __BYTE_ORDER __LITTLE_ENDIAN
>> +#define __BYTE_ORDER 1234
>> #define __LONG_MAX 0x7fffffffffffffffL
>>
>>
>>>>
>>>>>>>> -+TYPEDEF unsigned nlink_t;
>>>>>>>> ++TYPEDEF unsigned int nlink_t;
>>>>>>>
>>>>>>> Gratuitous and in opposite direction of coding style used
>>>>>>> elsewhere in
>>>>>>> musl. There are a few other instances of this too.
>>>>>>>
>>>>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
>>>>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>
>>>>>> `unsigned int`? Same for other bare `unsigned` usages.
>>>>>>
>>>>>> I fixed it to a explicit definition.
>>>>
>>>> please use plain unsigned, not unsigned int.
>>
>> --- a/arch/loongarch64/bits/alltypes.h.in
>> +++ b/arch/loongarch64/bits/alltypes.h.in
>> @@ -2,7 +2,7 @@
>>
>> -TYPEDEF unsigned int nlink_t;
>> +TYPEDEF unsigned nlink_t;
>> TYPEDEF int blksize_t;
>>
>>>>
>>>>>>>> -+ register uintptr_t tp __asm__("tp");
>>>>>>>> -+ __asm__ ("" : "=r" (tp) );
>>>>>>>> ++ uintptr_t tp;
>>>>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>>>>>>> + return tp;
>>>>>>>
>>>>>>> Not clear what the motivation is here. Is it working around a
>>>>>>> compiler
>>>>>>> bug? The original form was more optimal.
>>>>>>
>>>>>> The modification is based on the following review suggestion(
>>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>
>>>>>> While the current approach works, it's a bit fragile [1], and
>>>>>> the simple and plain riscv version works too:
>>>>>>
>>>>>> uintptr_t tp;
>>>>>> __asm__ ("move %0, $tp" : "=r"(tp));
>>>>>>
>>>>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>>>>>>
>>>>
>>>> this looks ok to me.
>>>>
>>>> (original code looks sketchy to me.)
>>>>
>>>>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>>> -+
>>>>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>>>>> -+ ".hidden " #sym "\n" \
>>>>>>>> -+ ".align 8 \n" \
>>>>>>>> -+ " la.local $t1, "#sym" \n" \
>>>>>>>> -+ " move %0, $t1 \n" \
>>>>>>>> -+ : "=r"(*(fp)) : : "memory" )
>>>>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>>
>>>>>>> Not clear why this was changed. It was never discussed afaik. It
>>>>>>> looks
>>>>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>>>>>>> default definition.
>>>>>>>
>>>>>> Based on the following review question(
>>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>
>>>>>> Does the generic version residing in ldso/dlstart.c not work?
>>>>>>
>>>>>> I found the code logic is consistent with the generic version, So
>>>>>> I removed the definition here and replaced it with generic version.
>>>>
>>>> i would change it back to the asm.
>>>>
>>>> generic version should work, but maybe we don't
>>>> want to trust the compiler here (there may be
>>>> ways to compile the generic code that is not
>>>> compatible with incompletely relocated libc.so)
>>>> the asm is safer.
>>>>
>> --- a/arch/loongarch64/reloc.h
>> +++ b/arch/loongarch64/reloc.h
>> @@ -18,3 +18,10 @@
>>
>> #define CRTJMP(pc,sp) __asm__ __volatile__( \
>> "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>> +
>> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>> + ".hidden " #sym "\n" \
>> + ".align 8 \n" \
>> + " la.local $t1, "#sym" \n" \
>> + " move %0, $t1 \n" \
>> + : "=r"(*(fp)) : : "memory" )
>>
>>>>>>> It also looks like v5->v6 rewrote sigsetjmp.
>>>>>>>
>>>>>> Based on the following review question(
>>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>
>>>>>> This is crazy complicated compared to the riscv port, why is the
>>>>>> juggling between a0/a1 and t5/t6 necessary?
>>>>>>
>>>>>> I optimized the code implementations.
>>>>
>>>> this should be ok.
>>>>
>>>>>>> v6->v7:
>>>>>>>
>>>>>>> sigcontext/mcontext_t change mostly makes sense, but the
>>>>>>> namespace-safe and full mcontext_t differ in their use of the
>>>>>>> aligned
>>>>>>> attribute and it's not clear that the attribute is needed (since the
>>>>>>> offset is naturally aligned and any instance of the object is
>>>>>>> produced
>>>>>>> by the kernel, not by userspace).
>>>>>>>
>>>>>>>> -+ long __uc_pad;
>>>>>>>
>>>>>>> This change to ucontext_t actually makes the struct ABI-incompatible
>>>>>>> in the namespace-safe version without the alignment attribute.
>>>>>>> IIRC I
>>>>>>> explicitly requested the explicit padding field to avoid this
>>>>>>> kind of
>>>>>>> footgun. Removing it does not seem like a good idea.
>>>>>>>
>>>>>> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte
>>>>>> alignment.
>>>>>> Now, we added __attribute__((__aligned__(16))) to
>>>>>> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16
>>>>>> byte
>>>>>> alignment. so __uc_pad is not used.
>>>>>>
>>>>>> Remove __uc_pad, from the point of struct layout, musl and kernel are
>>>>>> consistent. otherwise, I think it may bring a sense of inconsistency
>>>>>> between kernel and musl. Due to Loongarch is not merged into musl
>>>>>> now,
>>>>>> Remove it no compatibility issues.
>>>>
>>>> please add back the padding field.
>>
>> --- a/arch/loongarch64/bits/signal.h
>> +++ b/arch/loongarch64/bits/signal.h
>> @@ -40,6 +40,7 @@ typedef struct __ucontext
>> struct __ucontext *uc_link;
>> stack_t uc_stack;
>> sigset_t uc_sigmask;
>> + long __uc_pad;
>> mcontext_t uc_mcontext;
>> } ucontext_t;
>>
>>>>
>>>>>>> In stat.h:
>>>>>>>
>>>>>>>> -+ unsigned long __pad;
>>>>>>>> ++ unsigned long __pad1;
>>>>>>>
>>>>>>> This is gratuitous and makes the definition gratuitously mismatch
>>>>>>> what
>>>>>>> will become the "generic" version of bits/stat.h. There is no
>>>>>>> contract
>>>>>>> for applications to be able to access these padding fields by
>>>>>>> name, so
>>>>>>> no motivation to make their names match glibc's names or the
>>>>>>> kernel's.
>>>>>>>
>>>>>> OK.
>>>>
>>>> please fix it.
>>
>> --- a/arch/loongarch64/bits/stat.h
>> +++ b/arch/loongarch64/bits/stat.h
>> @@ -6,7 +6,7 @@ struct stat {
>> uid_t st_uid;
>> gid_t st_gid;
>> dev_t st_rdev;
>> - unsigned long __pad1;
>> + unsigned long __pad;
>> off_t st_size;
>> blksize_t st_blksize;
>> int __pad2;
>>
>>>>
>>>>>>> In fenv.S:
>>>>>>>
>>>>>>>> ++#ifdef __clang__
>>>>>>>> ++#define FCSR $fcsr0
>>>>>>>> ++#else
>>>>>>>> ++#define FCSR $r0
>>>>>>>> ++#endif
>>>>>>>
>>>>>>> It's not clear to me what's going on here. Is there a clang
>>>>>>> incompatibility in the assembler language you're working around? Or
>>>>>>> what? If so that seems like a tooling bug that should be fixed.
>>>>>>>
>>>>>> The GNU assembler cannot correctly recognize $fcsr0, but the
>>>>>> LLVM IAS does not have this issue, so make a distinction.
>>>>>> This issue has been fixed in GNU assembler 2.41. but for compatible
>>>>>> with GNU assembler 2.40 and below, $r0 need reserved.
>>>>
>>>> it sounds like the correct asm is $fcsr0, so that's
>>>> what should be used on all assemblers, not just on
>>>> clang as.
>>>>
>>>> only broken old gnu as should use different syntax.
>>>> for this a configure test is needed that adds a
>>>> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
>>>> and use that for the ifdef.
>>>>
>> --- a/configure
>> +++ b/configure
>>
>> if test "$ARCH" = "loongarch64" ; then
>> trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>> +printf "checking whether compiler support FCSRs... "
>> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>> +printf "yes\n"
>> +else
>> +printf "no\n"
>> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
>> +fi
>> fi
>>
>> --- a/src/fenv/loongarch64/fenv.S
>> +++ b/src/fenv/loongarch64/fenv.S
>> @@ -1,9 +1,9 @@
>> #ifndef __loongarch_soft_float
>>
>> -#ifdef __clang__
>> -#define FCSR $fcsr0
>> -#else
>> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
>> #define FCSR $r0
>> +#else
>> +#define FCSR $fcsr0
>> #endif
>>
>> .global feclearexcept
>>
>>>>>>
>>>>>> The linux kernel also has a similar distinction:
>>>>>>
>>>>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
>>>>>> Author: WANG Xuerui <git@xen0n.name>
>>>>>> Date: Thu Jun 29 20:58:43 2023 +0800
>>>>>>
>>>>>> LoongArch: Prepare for assemblers with proper FCSR class support
>>>>>>
>>>>>> The GNU assembler (as of 2.40) mis-treats FCSR operands as
>>>>>> GPRs, but
>>>>>> the LLVM IAS does not. Probe for this and refer to FCSRs
>>>>>> as"$fcsrNN"
>>>>>> if support is present.
>>>>>>
>>>>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
>>>>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>>>>>>
>>>>>>> Otherwise, everything looks as expected, I think. I'm okay with
>>>>>>> making
>>>>>>> any fixups for merging rather than throwing this back on your
>>>>>>> team for
>>>>>>> more revisions, but can you please follow up and clarify the above?
>>>>
>>>> all issues look minor.
>>>>
>>>> if you post a v8 it likely gets into a release faster.
>>>>
>
--
Jingyun Hua
^ permalink raw reply [flat|nested] 35+ messages in thread
* [musl] add loongarch64 port v9.
2023-11-14 13:16 ` Jingyun Hua
@ 2023-11-16 2:54 ` Hongliang Wang
2023-11-16 16:10 ` Rich Felker
2023-11-16 16:44 ` [musl] add loongarch64 port v9 Szabolcs Nagy
0 siblings, 2 replies; 35+ messages in thread
From: Hongliang Wang @ 2023-11-16 2:54 UTC (permalink / raw)
To: musl
[-- Attachment #1: Type: text/plain, Size: 15611 bytes --]
Hi,
Thank you for your suggestion, I have modified the dynamic linker
name according to the basic ABI types are specified in the ABI
document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
as shown in the attachment.
Based on 0001-add-loongarch64-port-v8.patch,the modifications for
0001-add-loongarch64-port-v9.patch are as follows:
---
arch/loongarch64/reloc.h | 10 ++++++----
configure | 4 +++-
2 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
index a4482b48..6907de8e 100644
--- a/arch/loongarch64/reloc.h
+++ b/arch/loongarch64/reloc.h
@@ -1,7 +1,9 @@
-#ifdef __loongarch_soft_float
-#define FP_SUFFIX "-sf"
-#else
-#define FP_SUFFIX ""
+#if defined __loongarch_double_float
+#define FP_SUFFIX "-lp64d"
+#elif defined __loongarch_single_float
+#define FP_SUFFIX "-lp64f"
+#elif defined __loongarch_soft_float
+#define FP_SUFFIX "-lp64s"
#endif
#define LDSO_ARCH "loongarch64" FP_SUFFIX
diff --git a/configure b/configure
index 55d179f1..93b06287 100755
--- a/configure
+++ b/configure
@@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
fi
if test "$ARCH" = "loongarch64" ; then
-trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
+trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
+trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
+trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
printf "checking whether compiler support FCSRs... "
echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
--
Please review again, and point them out if any questions need to be
modified, thanks.
Hongliang Wang
在 2023/11/14 下午9:16, Jingyun Hua 写道:
> hi,
>
> I have a suggestion regarding the musl dynamic linker name for the
> LoongArch architecture:
>
> The basic ABI types are specified in the ABI document of the LoongArch,
> which can be seen:
> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>
> and the dynamic linker name of glibc distinguishes lp64d, lp64s and
> lp64f with abi types.The v8 patch only defines the value of SUBARCH
> as "-sf" for “__loongarch_soft_float”, which means that only
> “ld-musl-loongarch64.so.1” or “ld-musl-loongarch64-sf.so.1” can be
> generated when compiled with the v8 patch.
>
> So I think the musl dynamic linker name for the LoongArch architecture
> needs to be modified, maybe defined like glibc?
>
> Regards,
> Jingyun Hua
>
> On 11/9/23 9:15 PM, Jingyun Hua wrote:
>> Hi all,
>>
>> Thank you for taking the time to check this email. I'm very interested
>> in musl and alpine, and I'd like to know the current status of this
>> patch and what we can do for it next.
>>
>> After Hongliang updated this patch from v7 to v8, in order to verify it,
>> I built the alpine linux from scratch base on this musl v8 patch on the
>> LoongArch64 machine, and successfully compiled projects such as gcc,
>> rust, llvm, go, etc.. Currently, more than 8,500 packages have been
>> built and running normally in my local repository.
>>
>> The patch has indeed been on hold for a long time. Is it in the
>> immediate plans? Is there anything that needs to be modified and
>> improved?
>>
>> Looking forward to your reply, thanks!
>>
>> Regards,
>> Jingyun Hua
>>
>> 在 2023/9/26 上午11:28, Hongliang Wang 写道:
>>> Hi,
>>>
>>> I have fixed the issues listed below, and post
>>> 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
>>> please review again, if there are anything that need to be modified,
>>> please point out, thank you.
>>>
>>> Hongliang Wang
>>>
>>> 在 2023/9/22 上午9:37, Hongliang Wang 写道:
>>>> Hi,
>>>>
>>>> Thank you for your review, I will modify it according to the review
>>>> suggestions and post v8 patch later.
>>>>
>>>> Hongliang Wang
>>>>
>>>> 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
>>>>> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
>>>>>> Sorry to bother you, but I just want to know if there is any
>>>>>> progress on
>>>>>> this, because Alpine is blocking by this patch for a long time. As
>>>>>> Hongliang
>>>>>> has explained questions you mentioned one by one, if any question
>>>>>> need to be
>>>>>> discussed, please point them out, so that the patch can be handled
>>>>>> further.
>>>>>
>>>>> i think you should post a v8 patch to move
>>>>> this forward. (not on github, but here)
>>>>>
>>>>>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
>>>>>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
>>>>>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>>>>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>>>>>>> -+#define __BYTE_ORDER 1234
>>>>>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>>>>>
>>>>>>>> This is gratuitous, mismatches what is done on other archs, and is
>>>>>>>> less safe.
>>>>>>>>
>>>>>>> The modification is based on the following review suggestion(
>>>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>
>>>>>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
>>>>>>> with other arches.
>>>>>
>>>>> please use 1234.
>>>
>>> --- a/arch/loongarch64/bits/alltypes.h.in
>>> +++ b/arch/loongarch64/bits/alltypes.h.in
>>> @@ -2,7 +2,7 @@
>>> #define _Int64 long
>>> #define _Reg long
>>>
>>> -#define __BYTE_ORDER __LITTLE_ENDIAN
>>> +#define __BYTE_ORDER 1234
>>> #define __LONG_MAX 0x7fffffffffffffffL
>>>
>>>
>>>>>
>>>>>>>>> -+TYPEDEF unsigned nlink_t;
>>>>>>>>> ++TYPEDEF unsigned int nlink_t;
>>>>>>>>
>>>>>>>> Gratuitous and in opposite direction of coding style used
>>>>>>>> elsewhere in
>>>>>>>> musl. There are a few other instances of this too.
>>>>>>>>
>>>>>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
>>>>>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>
>>>>>>> `unsigned int`? Same for other bare `unsigned` usages.
>>>>>>>
>>>>>>> I fixed it to a explicit definition.
>>>>>
>>>>> please use plain unsigned, not unsigned int.
>>>
>>> --- a/arch/loongarch64/bits/alltypes.h.in
>>> +++ b/arch/loongarch64/bits/alltypes.h.in
>>> @@ -2,7 +2,7 @@
>>>
>>> -TYPEDEF unsigned int nlink_t;
>>> +TYPEDEF unsigned nlink_t;
>>> TYPEDEF int blksize_t;
>>>
>>>>>
>>>>>>>>> -+ register uintptr_t tp __asm__("tp");
>>>>>>>>> -+ __asm__ ("" : "=r" (tp) );
>>>>>>>>> ++ uintptr_t tp;
>>>>>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>>>>>>>> + return tp;
>>>>>>>>
>>>>>>>> Not clear what the motivation is here. Is it working around a
>>>>>>>> compiler
>>>>>>>> bug? The original form was more optimal.
>>>>>>>
>>>>>>> The modification is based on the following review suggestion(
>>>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>
>>>>>>> While the current approach works, it's a bit fragile [1], and
>>>>>>> the simple and plain riscv version works too:
>>>>>>>
>>>>>>> uintptr_t tp;
>>>>>>> __asm__ ("move %0, $tp" : "=r"(tp));
>>>>>>>
>>>>>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>>>>>>>
>>>>>
>>>>> this looks ok to me.
>>>>>
>>>>> (original code looks sketchy to me.)
>>>>>
>>>>>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>>>> -+
>>>>>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>>>>>> -+ ".hidden " #sym "\n" \
>>>>>>>>> -+ ".align 8 \n" \
>>>>>>>>> -+ " la.local $t1, "#sym" \n" \
>>>>>>>>> -+ " move %0, $t1 \n" \
>>>>>>>>> -+ : "=r"(*(fp)) : : "memory" )
>>>>>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>>>
>>>>>>>> Not clear why this was changed. It was never discussed afaik. It
>>>>>>>> looks
>>>>>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>>>>>>>> default definition.
>>>>>>>>
>>>>>>> Based on the following review question(
>>>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>
>>>>>>> Does the generic version residing in ldso/dlstart.c not work?
>>>>>>>
>>>>>>> I found the code logic is consistent with the generic version, So
>>>>>>> I removed the definition here and replaced it with generic version.
>>>>>
>>>>> i would change it back to the asm.
>>>>>
>>>>> generic version should work, but maybe we don't
>>>>> want to trust the compiler here (there may be
>>>>> ways to compile the generic code that is not
>>>>> compatible with incompletely relocated libc.so)
>>>>> the asm is safer.
>>>>>
>>> --- a/arch/loongarch64/reloc.h
>>> +++ b/arch/loongarch64/reloc.h
>>> @@ -18,3 +18,10 @@
>>>
>>> #define CRTJMP(pc,sp) __asm__ __volatile__( \
>>> "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>> +
>>> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>> + ".hidden " #sym "\n" \
>>> + ".align 8 \n" \
>>> + " la.local $t1, "#sym" \n" \
>>> + " move %0, $t1 \n" \
>>> + : "=r"(*(fp)) : : "memory" )
>>>
>>>>>>>> It also looks like v5->v6 rewrote sigsetjmp.
>>>>>>>>
>>>>>>> Based on the following review question(
>>>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>
>>>>>>> This is crazy complicated compared to the riscv port, why is the
>>>>>>> juggling between a0/a1 and t5/t6 necessary?
>>>>>>>
>>>>>>> I optimized the code implementations.
>>>>>
>>>>> this should be ok.
>>>>>
>>>>>>>> v6->v7:
>>>>>>>>
>>>>>>>> sigcontext/mcontext_t change mostly makes sense, but the
>>>>>>>> namespace-safe and full mcontext_t differ in their use of the
>>>>>>>> aligned
>>>>>>>> attribute and it's not clear that the attribute is needed (since
>>>>>>>> the
>>>>>>>> offset is naturally aligned and any instance of the object is
>>>>>>>> produced
>>>>>>>> by the kernel, not by userspace).
>>>>>>>>
>>>>>>>>> -+ long __uc_pad;
>>>>>>>>
>>>>>>>> This change to ucontext_t actually makes the struct
>>>>>>>> ABI-incompatible
>>>>>>>> in the namespace-safe version without the alignment attribute.
>>>>>>>> IIRC I
>>>>>>>> explicitly requested the explicit padding field to avoid this
>>>>>>>> kind of
>>>>>>>> footgun. Removing it does not seem like a good idea.
>>>>>>>>
>>>>>>> Initially, we add __uc_pad to ensure uc_mcontext is 16 byte
>>>>>>> alignment.
>>>>>>> Now, we added __attribute__((__aligned__(16))) to
>>>>>>> uc_mcontext.__extcontext[],this can ensure uc_mcontext is also 16
>>>>>>> byte
>>>>>>> alignment. so __uc_pad is not used.
>>>>>>>
>>>>>>> Remove __uc_pad, from the point of struct layout, musl and kernel
>>>>>>> are
>>>>>>> consistent. otherwise, I think it may bring a sense of inconsistency
>>>>>>> between kernel and musl. Due to Loongarch is not merged into musl
>>>>>>> now,
>>>>>>> Remove it no compatibility issues.
>>>>>
>>>>> please add back the padding field.
>>>
>>> --- a/arch/loongarch64/bits/signal.h
>>> +++ b/arch/loongarch64/bits/signal.h
>>> @@ -40,6 +40,7 @@ typedef struct __ucontext
>>> struct __ucontext *uc_link;
>>> stack_t uc_stack;
>>> sigset_t uc_sigmask;
>>> + long __uc_pad;
>>> mcontext_t uc_mcontext;
>>> } ucontext_t;
>>>
>>>>>
>>>>>>>> In stat.h:
>>>>>>>>
>>>>>>>>> -+ unsigned long __pad;
>>>>>>>>> ++ unsigned long __pad1;
>>>>>>>>
>>>>>>>> This is gratuitous and makes the definition gratuitously
>>>>>>>> mismatch what
>>>>>>>> will become the "generic" version of bits/stat.h. There is no
>>>>>>>> contract
>>>>>>>> for applications to be able to access these padding fields by
>>>>>>>> name, so
>>>>>>>> no motivation to make their names match glibc's names or the
>>>>>>>> kernel's.
>>>>>>>>
>>>>>>> OK.
>>>>>
>>>>> please fix it.
>>>
>>> --- a/arch/loongarch64/bits/stat.h
>>> +++ b/arch/loongarch64/bits/stat.h
>>> @@ -6,7 +6,7 @@ struct stat {
>>> uid_t st_uid;
>>> gid_t st_gid;
>>> dev_t st_rdev;
>>> - unsigned long __pad1;
>>> + unsigned long __pad;
>>> off_t st_size;
>>> blksize_t st_blksize;
>>> int __pad2;
>>>
>>>>>
>>>>>>>> In fenv.S:
>>>>>>>>
>>>>>>>>> ++#ifdef __clang__
>>>>>>>>> ++#define FCSR $fcsr0
>>>>>>>>> ++#else
>>>>>>>>> ++#define FCSR $r0
>>>>>>>>> ++#endif
>>>>>>>>
>>>>>>>> It's not clear to me what's going on here. Is there a clang
>>>>>>>> incompatibility in the assembler language you're working around? Or
>>>>>>>> what? If so that seems like a tooling bug that should be fixed.
>>>>>>>>
>>>>>>> The GNU assembler cannot correctly recognize $fcsr0, but the
>>>>>>> LLVM IAS does not have this issue, so make a distinction.
>>>>>>> This issue has been fixed in GNU assembler 2.41. but for compatible
>>>>>>> with GNU assembler 2.40 and below, $r0 need reserved.
>>>>>
>>>>> it sounds like the correct asm is $fcsr0, so that's
>>>>> what should be used on all assemblers, not just on
>>>>> clang as.
>>>>>
>>>>> only broken old gnu as should use different syntax.
>>>>> for this a configure test is needed that adds a
>>>>> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
>>>>> and use that for the ifdef.
>>>>>
>>> --- a/configure
>>> +++ b/configure
>>>
>>> if test "$ARCH" = "loongarch64" ; then
>>> trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>> +printf "checking whether compiler support FCSRs... "
>>> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>> +printf "yes\n"
>>> +else
>>> +printf "no\n"
>>> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
>>> +fi
>>> fi
>>>
>>> --- a/src/fenv/loongarch64/fenv.S
>>> +++ b/src/fenv/loongarch64/fenv.S
>>> @@ -1,9 +1,9 @@
>>> #ifndef __loongarch_soft_float
>>>
>>> -#ifdef __clang__
>>> -#define FCSR $fcsr0
>>> -#else
>>> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
>>> #define FCSR $r0
>>> +#else
>>> +#define FCSR $fcsr0
>>> #endif
>>>
>>> .global feclearexcept
>>>
>>>>>>>
>>>>>>> The linux kernel also has a similar distinction:
>>>>>>>
>>>>>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
>>>>>>> Author: WANG Xuerui <git@xen0n.name>
>>>>>>> Date: Thu Jun 29 20:58:43 2023 +0800
>>>>>>>
>>>>>>> LoongArch: Prepare for assemblers with proper FCSR class
>>>>>>> support
>>>>>>>
>>>>>>> The GNU assembler (as of 2.40) mis-treats FCSR operands as
>>>>>>> GPRs, but
>>>>>>> the LLVM IAS does not. Probe for this and refer to FCSRs
>>>>>>> as"$fcsrNN"
>>>>>>> if support is present.
>>>>>>>
>>>>>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
>>>>>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>>>>>>>
>>>>>>>> Otherwise, everything looks as expected, I think. I'm okay with
>>>>>>>> making
>>>>>>>> any fixups for merging rather than throwing this back on your
>>>>>>>> team for
>>>>>>>> more revisions, but can you please follow up and clarify the above?
>>>>>
>>>>> all issues look minor.
>>>>>
>>>>> if you post a v8 it likely gets into a release faster.
>>>>>
>>
>
[-- Attachment #2: 0001-add-loongarch64-port-v9.patch --]
[-- Type: text/x-patch, Size: 45264 bytes --]
From 2d5f9717fda5c16f10d805ce8a26f1e78de440ea Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Wed, 15 Nov 2023 01:31:51 +0800
Subject: [PATCH] add loongarch64 port v9.
Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Author: Meidan Li <limeidan@loongson.cn>
Author: Guoqi Chen <chenguoqi@loongson.cn>
Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Author: Fan peng <fanpeng@loongson.cn>
Author: Jiantao Shan <shanjiantao@loongson.cn>
Author: Xuhui Qiang <qiangxuhui@loongson.cn>
Author: Jingyun Hua <huajingyun@loongson.cn>
Author: Liu xue <liuxue@loongson.cn>
Author: Hongliang Wang <wanghongliang@loongson.cn>
Signed-off-by: wanghongliang <wanghongliang@loongson.cn>
---
arch/loongarch64/atomic_arch.h | 53 ++++
arch/loongarch64/bits/alltypes.h.in | 18 ++
arch/loongarch64/bits/fenv.h | 20 ++
arch/loongarch64/bits/float.h | 16 ++
arch/loongarch64/bits/posix.h | 2 +
arch/loongarch64/bits/ptrace.h | 4 +
arch/loongarch64/bits/reg.h | 2 +
arch/loongarch64/bits/setjmp.h | 1 +
arch/loongarch64/bits/signal.h | 92 +++++++
arch/loongarch64/bits/stat.h | 18 ++
arch/loongarch64/bits/stdint.h | 20 ++
arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
arch/loongarch64/bits/user.h | 5 +
arch/loongarch64/crt_arch.h | 13 +
arch/loongarch64/pthread_arch.h | 11 +
arch/loongarch64/reloc.h | 29 ++
arch/loongarch64/syscall_arch.h | 137 ++++++++++
configure | 15 +
include/elf.h | 104 ++++++-
src/fenv/loongarch64/fenv.S | 78 ++++++
src/ldso/loongarch64/dlsym.s | 7 +
src/setjmp/loongarch64/longjmp.S | 32 +++
src/setjmp/loongarch64/setjmp.S | 34 +++
src/signal/loongarch64/restore.s | 10 +
src/signal/loongarch64/sigsetjmp.s | 25 ++
src/thread/loongarch64/__set_thread_area.s | 7 +
src/thread/loongarch64/__unmapself.s | 7 +
src/thread/loongarch64/clone.s | 28 ++
src/thread/loongarch64/syscall_cp.s | 29 ++
29 files changed, 1119 insertions(+), 1 deletion(-)
create mode 100644 arch/loongarch64/atomic_arch.h
create mode 100644 arch/loongarch64/bits/alltypes.h.in
create mode 100644 arch/loongarch64/bits/fenv.h
create mode 100644 arch/loongarch64/bits/float.h
create mode 100644 arch/loongarch64/bits/posix.h
create mode 100644 arch/loongarch64/bits/ptrace.h
create mode 100644 arch/loongarch64/bits/reg.h
create mode 100644 arch/loongarch64/bits/setjmp.h
create mode 100644 arch/loongarch64/bits/signal.h
create mode 100644 arch/loongarch64/bits/stat.h
create mode 100644 arch/loongarch64/bits/stdint.h
create mode 100644 arch/loongarch64/bits/syscall.h.in
create mode 100644 arch/loongarch64/bits/user.h
create mode 100644 arch/loongarch64/crt_arch.h
create mode 100644 arch/loongarch64/pthread_arch.h
create mode 100644 arch/loongarch64/reloc.h
create mode 100644 arch/loongarch64/syscall_arch.h
create mode 100644 src/fenv/loongarch64/fenv.S
create mode 100644 src/ldso/loongarch64/dlsym.s
create mode 100644 src/setjmp/loongarch64/longjmp.S
create mode 100644 src/setjmp/loongarch64/setjmp.S
create mode 100644 src/signal/loongarch64/restore.s
create mode 100644 src/signal/loongarch64/sigsetjmp.s
create mode 100644 src/thread/loongarch64/__set_thread_area.s
create mode 100644 src/thread/loongarch64/__unmapself.s
create mode 100644 src/thread/loongarch64/clone.s
create mode 100644 src/thread/loongarch64/syscall_cp.s
diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
new file mode 100644
index 00000000..2225d027
--- /dev/null
+++ b/arch/loongarch64/atomic_arch.h
@@ -0,0 +1,53 @@
+#define a_ll a_ll
+static inline int a_ll(volatile int *p)
+{
+ int v;
+ __asm__ __volatile__ (
+ "ll.w %0, %1"
+ : "=r"(v)
+ : "ZC"(*p));
+ return v;
+}
+
+#define a_sc a_sc
+static inline int a_sc(volatile int *p, int v)
+{
+ int r;
+ __asm__ __volatile__ (
+ "sc.w %0, %1"
+ : "=r"(r), "=ZC"(*p)
+ : "0"(v) : "memory");
+ return r;
+}
+
+#define a_ll_p a_ll_p
+static inline void *a_ll_p(volatile void *p)
+{
+ void *v;
+ __asm__ __volatile__ (
+ "ll.d %0, %1"
+ : "=r"(v)
+ : "ZC"(*(void *volatile *)p));
+ return v;
+}
+
+#define a_sc_p a_sc_p
+static inline int a_sc_p(volatile void *p, void *v)
+{
+ long r;
+ __asm__ __volatile__ (
+ "sc.d %0, %1"
+ : "=r"(r), "=ZC"(*(void *volatile *)p)
+ : "0"(v)
+ : "memory");
+ return r;
+}
+
+#define a_barrier a_barrier
+static inline void a_barrier()
+{
+ __asm__ __volatile__ ("dbar 0" : : : "memory");
+}
+
+#define a_pre_llsc a_barrier
+#define a_post_llsc a_barrier
diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
new file mode 100644
index 00000000..06db4096
--- /dev/null
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -0,0 +1,18 @@
+#define _Addr long
+#define _Int64 long
+#define _Reg long
+
+#define __BYTE_ORDER 1234
+#define __LONG_MAX 0x7fffffffffffffffL
+
+#ifndef __cplusplus
+TYPEDEF int wchar_t;
+#endif
+
+TYPEDEF float float_t;
+TYPEDEF double double_t;
+
+TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
+
+TYPEDEF unsigned nlink_t;
+TYPEDEF int blksize_t;
diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
new file mode 100644
index 00000000..99e916e1
--- /dev/null
+++ b/arch/loongarch64/bits/fenv.h
@@ -0,0 +1,20 @@
+#define FE_INEXACT 0x010000
+#define FE_UNDERFLOW 0x020000
+#define FE_OVERFLOW 0x040000
+#define FE_DIVBYZERO 0x080000
+#define FE_INVALID 0x100000
+
+#define FE_ALL_EXCEPT 0x1F0000
+
+#define FE_TONEAREST 0x000
+#define FE_TOWARDZERO 0x100
+#define FE_UPWARD 0x200
+#define FE_DOWNWARD 0x300
+
+typedef unsigned fexcept_t;
+
+typedef struct {
+ unsigned int __cw;
+} fenv_t;
+
+#define FE_DFL_ENV ((const fenv_t *) -1)
diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
new file mode 100644
index 00000000..63e86d44
--- /dev/null
+++ b/arch/loongarch64/bits/float.h
@@ -0,0 +1,16 @@
+#define FLT_EVAL_METHOD 0
+
+#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
+#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
+#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
+#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
+
+#define LDBL_MANT_DIG 113
+#define LDBL_MIN_EXP (-16381)
+#define LDBL_MAX_EXP 16384
+
+#define LDBL_DIG 33
+#define LDBL_MIN_10_EXP (-4931)
+#define LDBL_MAX_10_EXP 4932
+
+#define DECIMAL_DIG 36
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..c37b94c1
--- /dev/null
+++ b/arch/loongarch64/bits/posix.h
@@ -0,0 +1,2 @@
+#define _POSIX_V6_LP64_OFF64 1
+#define _POSIX_V7_LP64_OFF64 1
diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
new file mode 100644
index 00000000..dce2fa51
--- /dev/null
+++ b/arch/loongarch64/bits/ptrace.h
@@ -0,0 +1,4 @@
+#define PTRACE_GET_THREAD_AREA 25
+#define PTRACE_SET_THREAD_AREA 26
+#define PTRACE_GET_WATCH_REGS 0xd0
+#define PTRACE_SET_WATCH_REGS 0xd1
diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
new file mode 100644
index 00000000..2633f39d
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,2 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..4bfa374d
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long __jmp_buf[23];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..e1d256e7
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,92 @@
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define MINSIGSTKSZ 4096
+#define SIGSTKSZ 16384
+#endif
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef unsigned long greg_t, gregset_t[32];
+
+struct sigcontext {
+ unsigned long sc_pc;
+ unsigned long sc_regs[32];
+ unsigned int sc_flags;
+ unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
+};
+
+typedef struct {
+ unsigned long __pc;
+ unsigned long __gregs[32];
+ unsigned int __flags;
+ unsigned long __extcontext[] __attribute__((__aligned__(16)));
+} mcontext_t;
+#else
+typedef struct {
+ unsigned long __space[34];
+} mcontext_t;
+#endif
+
+struct sigaltstack {
+ void *ss_sp;
+ int ss_flags;
+ size_t ss_size;
+};
+
+typedef struct __ucontext
+{
+ unsigned long __uc_flags;
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ sigset_t uc_sigmask;
+ long __uc_pad;
+ mcontext_t uc_mcontext;
+} ucontext_t;
+
+#define SA_NOCLDSTOP 1
+#define SA_NOCLDWAIT 2
+#define SA_SIGINFO 4
+#define SA_ONSTACK 0x08000000
+#define SA_RESTART 0x10000000
+#define SA_NODEFER 0x40000000
+#define SA_RESETHAND 0x80000000
+#define SA_RESTORER 0x0
+
+#endif
+
+#define SIGHUP 1
+#define SIGINT 2
+#define SIGQUIT 3
+#define SIGILL 4
+#define SIGTRAP 5
+#define SIGABRT 6
+#define SIGIOT SIGABRT
+#define SIGBUS 7
+#define SIGFPE 8
+#define SIGKILL 9
+#define SIGUSR1 10
+#define SIGSEGV 11
+#define SIGUSR2 12
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGTERM 15
+#define SIGSTKFLT 16
+#define SIGCHLD 17
+#define SIGCONT 18
+#define SIGSTOP 19
+#define SIGTSTP 20
+#define SIGTTIN 21
+#define SIGTTOU 22
+#define SIGURG 23
+#define SIGXCPU 24
+#define SIGXFSZ 25
+#define SIGVTALRM 26
+#define SIGPROF 27
+#define SIGWINCH 28
+#define SIGIO 29
+#define SIGPOLL SIGIO
+#define SIGPWR 30
+#define SIGSYS 31
+#define SIGUNUSED SIGSYS
+#define _NSIG 65
diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
new file mode 100644
index 00000000..b7f4221b
--- /dev/null
+++ b/arch/loongarch64/bits/stat.h
@@ -0,0 +1,18 @@
+struct stat {
+ dev_t st_dev;
+ ino_t st_ino;
+ mode_t st_mode;
+ nlink_t st_nlink;
+ uid_t st_uid;
+ gid_t st_gid;
+ dev_t st_rdev;
+ unsigned long __pad;
+ off_t st_size;
+ blksize_t st_blksize;
+ int __pad2;
+ blkcnt_t st_blocks;
+ struct timespec st_atim;
+ struct timespec st_mtim;
+ struct timespec st_ctim;
+ unsigned __unused[2];
+};
diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
new file mode 100644
index 00000000..60c12499
--- /dev/null
+++ b/arch/loongarch64/bits/stdint.h
@@ -0,0 +1,20 @@
+typedef int32_t int_fast16_t;
+typedef int32_t int_fast32_t;
+typedef uint32_t uint_fast16_t;
+typedef uint32_t uint_fast32_t;
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST32_MIN INT32_MIN
+
+#define INT_FAST16_MAX INT32_MAX
+#define INT_FAST32_MAX INT32_MAX
+
+#define UINT_FAST16_MAX UINT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INTPTR_MIN INT64_MIN
+#define INTPTR_MAX INT64_MAX
+#define UINTPTR_MAX UINT64_MAX
+#define PTRDIFF_MIN INT64_MIN
+#define PTRDIFF_MAX INT64_MAX
+#define SIZE_MAX UINT64_MAX
diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
new file mode 100644
index 00000000..0980e533
--- /dev/null
+++ b/arch/loongarch64/bits/syscall.h.in
@@ -0,0 +1,303 @@
+#define __NR_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+#define __NR_setxattr 5
+#define __NR_lsetxattr 6
+#define __NR_fsetxattr 7
+#define __NR_getxattr 8
+#define __NR_lgetxattr 9
+#define __NR_fgetxattr 10
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_flistxattr 13
+#define __NR_removexattr 14
+#define __NR_lremovexattr 15
+#define __NR_fremovexattr 16
+#define __NR_getcwd 17
+#define __NR_lookup_dcookie 18
+#define __NR_eventfd2 19
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR3264_fcntl 25
+#define __NR_inotify_init1 26
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_rm_watch 28
+#define __NR_ioctl 29
+#define __NR_ioprio_set 30
+#define __NR_ioprio_get 31
+#define __NR_flock 32
+#define __NR_mknodat 33
+#define __NR_mkdirat 34
+#define __NR_unlinkat 35
+#define __NR_symlinkat 36
+#define __NR_linkat 37
+#define __NR_umount2 39
+#define __NR_mount 40
+#define __NR_pivot_root 41
+#define __NR_nfsservctl 42
+#define __NR3264_statfs 43
+#define __NR3264_fstatfs 44
+#define __NR3264_truncate 45
+#define __NR3264_ftruncate 46
+#define __NR_fallocate 47
+#define __NR_faccessat 48
+#define __NR_chdir 49
+#define __NR_fchdir 50
+#define __NR_chroot 51
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchownat 54
+#define __NR_fchown 55
+#define __NR_openat 56
+#define __NR_close 57
+#define __NR_vhangup 58
+#define __NR_pipe2 59
+#define __NR_quotactl 60
+#define __NR_getdents64 61
+#define __NR3264_lseek 62
+#define __NR_read 63
+#define __NR_write 64
+#define __NR_readv 65
+#define __NR_writev 66
+#define __NR_pread64 67
+#define __NR_pwrite64 68
+#define __NR_preadv 69
+#define __NR_pwritev 70
+#define __NR3264_sendfile 71
+#define __NR_pselect6 72
+#define __NR_ppoll 73
+#define __NR_signalfd4 74
+#define __NR_vmsplice 75
+#define __NR_splice 76
+#define __NR_tee 77
+#define __NR_readlinkat 78
+#define __NR_sync 81
+#define __NR_fsync 82
+#define __NR_fdatasync 83
+#define __NR_sync_file_range 84
+#define __NR_timerfd_create 85
+#define __NR_timerfd_settime 86
+#define __NR_timerfd_gettime 87
+#define __NR_utimensat 88
+#define __NR_acct 89
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_personality 92
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_waitid 95
+#define __NR_set_tid_address 96
+#define __NR_unshare 97
+#define __NR_futex 98
+#define __NR_set_robust_list 99
+#define __NR_get_robust_list 100
+#define __NR_nanosleep 101
+#define __NR_getitimer 102
+#define __NR_setitimer 103
+#define __NR_kexec_load 104
+#define __NR_init_module 105
+#define __NR_delete_module 106
+#define __NR_timer_create 107
+#define __NR_timer_gettime 108
+#define __NR_timer_getoverrun 109
+#define __NR_timer_settime 110
+#define __NR_timer_delete 111
+#define __NR_clock_settime 112
+#define __NR_clock_gettime 113
+#define __NR_clock_getres 114
+#define __NR_clock_nanosleep 115
+#define __NR_syslog 116
+#define __NR_ptrace 117
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_getscheduler 120
+#define __NR_sched_getparam 121
+#define __NR_sched_setaffinity 122
+#define __NR_sched_getaffinity 123
+#define __NR_sched_yield 124
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_rr_get_interval 127
+#define __NR_restart_syscall 128
+#define __NR_kill 129
+#define __NR_tkill 130
+#define __NR_tgkill 131
+#define __NR_sigaltstack 132
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_setpriority 140
+#define __NR_getpriority 141
+#define __NR_reboot 142
+#define __NR_setregid 143
+#define __NR_setgid 144
+#define __NR_setreuid 145
+#define __NR_setuid 146
+#define __NR_setresuid 147
+#define __NR_getresuid 148
+#define __NR_setresgid 149
+#define __NR_getresgid 150
+#define __NR_setfsuid 151
+#define __NR_setfsgid 152
+#define __NR_times 153
+#define __NR_setpgid 154
+#define __NR_getpgid 155
+#define __NR_getsid 156
+#define __NR_setsid 157
+#define __NR_getgroups 158
+#define __NR_setgroups 159
+#define __NR_uname 160
+#define __NR_sethostname 161
+#define __NR_setdomainname 162
+#define __NR_getrlimit 163
+#define __NR_setrlimit 164
+#define __NR_getrusage 165
+#define __NR_umask 166
+#define __NR_prctl 167
+#define __NR_getcpu 168
+#define __NR_gettimeofday 169
+#define __NR_settimeofday 170
+#define __NR_adjtimex 171
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getuid 174
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getegid 177
+#define __NR_gettid 178
+#define __NR_sysinfo 179
+#define __NR_mq_open 180
+#define __NR_mq_unlink 181
+#define __NR_mq_timedsend 182
+#define __NR_mq_timedreceive 183
+#define __NR_mq_notify 184
+#define __NR_mq_getsetattr 185
+#define __NR_msgget 186
+#define __NR_msgctl 187
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_semget 190
+#define __NR_semctl 191
+#define __NR_semtimedop 192
+#define __NR_semop 193
+#define __NR_shmget 194
+#define __NR_shmctl 195
+#define __NR_shmat 196
+#define __NR_shmdt 197
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_bind 200
+#define __NR_listen 201
+#define __NR_accept 202
+#define __NR_connect 203
+#define __NR_getsockname 204
+#define __NR_getpeername 205
+#define __NR_sendto 206
+#define __NR_recvfrom 207
+#define __NR_setsockopt 208
+#define __NR_getsockopt 209
+#define __NR_shutdown 210
+#define __NR_sendmsg 211
+#define __NR_recvmsg 212
+#define __NR_readahead 213
+#define __NR_brk 214
+#define __NR_munmap 215
+#define __NR_mremap 216
+#define __NR_add_key 217
+#define __NR_request_key 218
+#define __NR_keyctl 219
+#define __NR_clone 220
+#define __NR_execve 221
+#define __NR3264_mmap 222
+#define __NR3264_fadvise64 223
+#define __NR_swapon 224
+#define __NR_swapoff 225
+#define __NR_mprotect 226
+#define __NR_msync 227
+#define __NR_mlock 228
+#define __NR_munlock 229
+#define __NR_mlockall 230
+#define __NR_munlockall 231
+#define __NR_mincore 232
+#define __NR_madvise 233
+#define __NR_remap_file_pages 234
+#define __NR_mbind 235
+#define __NR_get_mempolicy 236
+#define __NR_set_mempolicy 237
+#define __NR_migrate_pages 238
+#define __NR_move_pages 239
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_perf_event_open 241
+#define __NR_accept4 242
+#define __NR_recvmmsg 243
+#define __NR_arch_specific_syscall 244
+#define __NR_wait4 260
+#define __NR_prlimit64 261
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_name_to_handle_at 264
+#define __NR_open_by_handle_at 265
+#define __NR_clock_adjtime 266
+#define __NR_syncfs 267
+#define __NR_setns 268
+#define __NR_sendmmsg 269
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_kcmp 272
+#define __NR_finit_module 273
+#define __NR_sched_setattr 274
+#define __NR_sched_getattr 275
+#define __NR_renameat2 276
+#define __NR_seccomp 277
+#define __NR_getrandom 278
+#define __NR_memfd_create 279
+#define __NR_bpf 280
+#define __NR_execveat 281
+#define __NR_userfaultfd 282
+#define __NR_membarrier 283
+#define __NR_mlock2 284
+#define __NR_copy_file_range 285
+#define __NR_preadv2 286
+#define __NR_pwritev2 287
+#define __NR_pkey_mprotect 288
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_statx 291
+#define __NR_io_pgetevents 292
+#define __NR_rseq 293
+#define __NR_kexec_file_load 294
+#define __NR_pidfd_send_signal 424
+#define __NR_io_uring_setup 425
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+#define __NR_pidfd_open 434
+#define __NR_clone3 435
+#define __NR_close_range 436
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
+#define __NR_faccessat2 439
+#define __NR_process_madvise 440
+#define __NR_fcntl __NR3264_fcntl
+#define __NR_statfs __NR3264_statfs
+#define __NR_fstatfs __NR3264_fstatfs
+#define __NR_truncate __NR3264_truncate
+#define __NR_ftruncate __NR3264_ftruncate
+#define __NR_lseek __NR3264_lseek
+#define __NR_sendfile __NR3264_sendfile
+#define __NR_mmap __NR3264_mmap
+#define __NR_fadvise64 __NR3264_fadvise64
diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
new file mode 100644
index 00000000..5a71d132
--- /dev/null
+++ b/arch/loongarch64/bits/user.h
@@ -0,0 +1,5 @@
+#define ELF_NGREG 45
+#define ELF_NFPREG 33
+
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
new file mode 100644
index 00000000..e0760d9e
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,13 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type " START ", @function\n"
+START ":\n"
+" move $fp, $zero\n"
+" move $a0, $sp\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+" la.local $a1, _DYNAMIC\n"
+" bstrins.d $sp, $zero, 3, 0\n"
+" b " START "_c\n"
+);
diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
new file mode 100644
index 00000000..28fbfcd1
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,11 @@
+static inline uintptr_t __get_tp()
+{
+ uintptr_t tp;
+ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
+ return tp;
+}
+
+#define TLS_ABOVE_TP
+#define GAP_ABOVE_TP 0
+#define DTP_OFFSET 0
+#define MC_PC __pc
diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
new file mode 100644
index 00000000..6907de8e
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,29 @@
+#if defined __loongarch_double_float
+#define FP_SUFFIX "-lp64d"
+#elif defined __loongarch_single_float
+#define FP_SUFFIX "-lp64f"
+#elif defined __loongarch_soft_float
+#define FP_SUFFIX "-lp64s"
+#endif
+
+#define LDSO_ARCH "loongarch64" FP_SUFFIX
+
+#define TPOFF_K 0
+
+#define REL_PLT R_LARCH_JUMP_SLOT
+#define REL_COPY R_LARCH_COPY
+#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
+#define REL_DTPOFF R_LARCH_TLS_DTPREL64
+#define REL_TPOFF R_LARCH_TLS_TPREL64
+#define REL_RELATIVE R_LARCH_RELATIVE
+#define REL_SYMBOLIC R_LARCH_64
+
+#define CRTJMP(pc,sp) __asm__ __volatile__( \
+ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
+
+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
+ ".hidden " #sym "\n" \
+ ".align 8 \n" \
+ " la.local $t1, "#sym" \n" \
+ " move %0, $t1 \n" \
+ : "=r"(*(fp)) : : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..4d5e1885
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+ "$t0", "$t1", "$t2", "$t3", \
+ "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
+
+static inline long __syscall0(long n)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0");
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "=r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall1(long n, long a)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall2(long n, long a, long b)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall3(long n, long a, long b, long c)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall4(long n, long a, long b, long c, long d)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall5(long n, long a, long b, long c, long d, long e)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
+{
+ register long a7 __asm__("$a7") = n;
+ register long a0 __asm__("$a0") = a;
+ register long a1 __asm__("$a1") = b;
+ register long a2 __asm__("$a2") = c;
+ register long a3 __asm__("$a3") = d;
+ register long a4 __asm__("$a4") = e;
+ register long a5 __asm__("$a5") = f;
+ register long a6 __asm__("$a6") = g;
+
+ __asm__ __volatile__ (
+ "syscall 0"
+ : "+r"(a0)
+ : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
+ : SYSCALL_CLOBBERLIST);
+ return a0;
+}
+
+#define VDSO_USEFUL
+#define VDSO_CGT_SYM "__vdso_clock_gettime"
+#define VDSO_CGT_VER "LINUX_5.10"
+
+#define IPC_64 0
diff --git a/configure b/configure
index 0b966ede..93b06287 100755
--- a/configure
+++ b/configure
@@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
x86_64-nt64*) ARCH=nt64 ;;
x86_64*) ARCH=x86_64 ;;
+loongarch64*) ARCH=loongarch64 ;;
m68k*) ARCH=m68k ;;
mips64*|mipsisa64*) ARCH=mips64 ;;
mips*) ARCH=mips ;;
@@ -671,6 +672,20 @@ if test "$ARCH" = "aarch64" ; then
trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
fi
+if test "$ARCH" = "loongarch64" ; then
+trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
+trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
+trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
+printf "checking whether compiler support FCSRs... "
+echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
+if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+printf "yes\n"
+else
+printf "no\n"
+CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
+fi
+fi
+
if test "$ARCH" = "m68k" ; then
if trycppif "__HAVE_68881__" ; then : ;
elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
diff --git a/include/elf.h b/include/elf.h
index 23f2c4bc..7114f262 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -315,7 +315,8 @@ typedef struct {
#define EM_RISCV 243
#define EM_BPF 247
#define EM_CSKY 252
-#define EM_NUM 253
+#define EM_LOONGARCH 258
+#define EM_NUM 259
#define EM_ALPHA 0x9026
@@ -699,6 +700,11 @@ typedef struct {
#define NT_MIPS_FP_MODE 0x801
#define NT_MIPS_MSA 0x802
#define NT_VERSION 1
+#define NT_LOONGARCH_CPUCFG 0xa00
+#define NT_LOONGARCH_CSR 0xa01
+#define NT_LOONGARCH_LSX 0xa02
+#define NT_LOONGARCH_LASX 0xa03
+#define NT_LOONGARCH_LBT 0xa04
@@ -3293,6 +3299,102 @@ enum
#define R_RISCV_SET32 56
#define R_RISCV_32_PCREL 57
+#define EF_LARCH_ABI_MODIFIER_MASK 0x07
+#define EF_LARCH_ABI_SOFT_FLOAT 0x01
+#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
+#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
+#define EF_LARCH_OBJABI_V1 0x40
+
+#define R_LARCH_NONE 0
+#define R_LARCH_32 1
+#define R_LARCH_64 2
+#define R_LARCH_RELATIVE 3
+#define R_LARCH_COPY 4
+#define R_LARCH_JUMP_SLOT 5
+#define R_LARCH_TLS_DTPMOD32 6
+#define R_LARCH_TLS_DTPMOD64 7
+#define R_LARCH_TLS_DTPREL32 8
+#define R_LARCH_TLS_DTPREL64 9
+#define R_LARCH_TLS_TPREL32 10
+#define R_LARCH_TLS_TPREL64 11
+#define R_LARCH_IRELATIVE 12
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_MARK_PCREL 21
+#define R_LARCH_SOP_PUSH_PCREL 22
+#define R_LARCH_SOP_PUSH_ABSOLUTE 23
+#define R_LARCH_SOP_PUSH_DUP 24
+#define R_LARCH_SOP_PUSH_GPREL 25
+#define R_LARCH_SOP_PUSH_TLS_TPREL 26
+#define R_LARCH_SOP_PUSH_TLS_GOT 27
+#define R_LARCH_SOP_PUSH_TLS_GD 28
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#define R_LARCH_SOP_ASSERT 30
+#define R_LARCH_SOP_NOT 31
+#define R_LARCH_SOP_SUB 32
+#define R_LARCH_SOP_SL 33
+#define R_LARCH_SOP_SR 34
+#define R_LARCH_SOP_ADD 35
+#define R_LARCH_SOP_AND 36
+#define R_LARCH_SOP_IF_ELSE 37
+#define R_LARCH_SOP_POP_32_S_10_5 38
+#define R_LARCH_SOP_POP_32_U_10_12 39
+#define R_LARCH_SOP_POP_32_S_10_12 40
+#define R_LARCH_SOP_POP_32_S_10_16 41
+#define R_LARCH_SOP_POP_32_S_10_16_S2 42
+#define R_LARCH_SOP_POP_32_S_5_20 43
+#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
+#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
+#define R_LARCH_SOP_POP_32_U 46
+#define R_LARCH_ADD8 47
+#define R_LARCH_ADD16 48
+#define R_LARCH_ADD24 49
+#define R_LARCH_ADD32 50
+#define R_LARCH_ADD64 51
+#define R_LARCH_SUB8 52
+#define R_LARCH_SUB16 53
+#define R_LARCH_SUB24 54
+#define R_LARCH_SUB32 55
+#define R_LARCH_SUB64 56
+#define R_LARCH_GNU_VTINHERIT 57
+#define R_LARCH_GNU_VTENTRY 58
+#define R_LARCH_B16 64
+#define R_LARCH_B21 65
+#define R_LARCH_B26 66
+#define R_LARCH_ABS_HI20 67
+#define R_LARCH_ABS_LO12 68
+#define R_LARCH_ABS64_LO20 69
+#define R_LARCH_ABS64_HI12 70
+#define R_LARCH_PCALA_HI20 71
+#define R_LARCH_PCALA_LO12 72
+#define R_LARCH_PCALA64_LO20 73
+#define R_LARCH_PCALA64_HI12 74
+#define R_LARCH_GOT_PC_HI20 75
+#define R_LARCH_GOT_PC_LO12 76
+#define R_LARCH_GOT64_PC_LO20 77
+#define R_LARCH_GOT64_PC_HI12 78
+#define R_LARCH_GOT_HI20 79
+#define R_LARCH_GOT_LO12 80
+#define R_LARCH_GOT64_LO20 81
+#define R_LARCH_GOT64_HI12 82
+#define R_LARCH_TLS_LE_HI20 83
+#define R_LARCH_TLS_LE_LO12 84
+#define R_LARCH_TLS_LE64_LO20 85
+#define R_LARCH_TLS_LE64_HI12 86
+#define R_LARCH_TLS_IE_PC_HI20 87
+#define R_LARCH_TLS_IE_PC_LO12 88
+#define R_LARCH_TLS_IE64_PC_LO20 89
+#define R_LARCH_TLS_IE64_PC_HI12 90
+#define R_LARCH_TLS_IE_HI20 91
+#define R_LARCH_TLS_IE_LO12 92
+#define R_LARCH_TLS_IE64_LO20 93
+#define R_LARCH_TLS_IE64_HI12 94
+#define R_LARCH_TLS_LD_PC_HI20 95
+#define R_LARCH_TLS_LD_HI20 96
+#define R_LARCH_TLS_GD_PC_HI20 97
+#define R_LARCH_TLS_GD_HI20 98
+#define R_LARCH_32_PCREL 99
+#define R_LARCH_RELAX 100
+
#ifdef __cplusplus
}
#endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..54064e01
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,78 @@
+#ifndef __loongarch_soft_float
+
+#ifdef BROKEN_LOONGARCH_FCSR_ASM
+#define FCSR $r0
+#else
+#define FCSR $fcsr0
+#endif
+
+.global feclearexcept
+.type feclearexcept,@function
+feclearexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global feraiseexcept
+.type feraiseexcept,@function
+feraiseexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fetestexcept
+.type fetestexcept,@function
+fetestexcept:
+ li.w $t0, 0x1f0000
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ and $a0, $t1, $a0
+ jr $ra
+
+.global fegetround
+.type fegetround,@function
+fegetround:
+ movfcsr2gr $t0, FCSR
+ andi $a0, $t0, 0x300
+ jr $ra
+
+.global __fesetround
+.hidden __fesetround
+.type __fesetround,@function
+__fesetround:
+ li.w $t0, 0x300
+ and $a0, $a0, $t0
+ movfcsr2gr $t1, FCSR
+ andn $t1, $t1, $t0
+ or $t1, $t1, $a0
+ movgr2fcsr FCSR, $t1
+ li.w $a0, 0
+ jr $ra
+
+.global fegetenv
+.type fegetenv,@function
+fegetenv:
+ movfcsr2gr $t0, FCSR
+ st.w $t0, $a0, 0
+ li.w $a0, 0
+ jr $ra
+
+.global fesetenv
+.type fesetenv,@function
+fesetenv:
+ addi.d $t0, $a0, 1
+ beq $t0, $r0, 1f
+ ld.w $t0, $a0, 0
+1: movgr2fcsr FCSR, $t0
+ li.w $a0, 0
+ jr $ra
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..26fabcdb
--- /dev/null
+++ b/src/ldso/loongarch64/dlsym.s
@@ -0,0 +1,7 @@
+.global dlsym
+.hidden __dlsym
+.type dlsym,@function
+dlsym:
+ move $a2, $ra
+ la.global $t0, __dlsym
+ jr $t0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..896d2e26
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,32 @@
+.global _longjmp
+.global longjmp
+.type _longjmp,@function
+.type longjmp,@function
+_longjmp:
+longjmp:
+ ld.d $ra, $a0, 0
+ ld.d $sp, $a0, 8
+ ld.d $r21,$a0, 16
+ ld.d $fp, $a0, 24
+ ld.d $s0, $a0, 32
+ ld.d $s1, $a0, 40
+ ld.d $s2, $a0, 48
+ ld.d $s3, $a0, 56
+ ld.d $s4, $a0, 64
+ ld.d $s5, $a0, 72
+ ld.d $s6, $a0, 80
+ ld.d $s7, $a0, 88
+ ld.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fld.d $fs0, $a0, 104
+ fld.d $fs1, $a0, 112
+ fld.d $fs2, $a0, 120
+ fld.d $fs3, $a0, 128
+ fld.d $fs4, $a0, 136
+ fld.d $fs5, $a0, 144
+ fld.d $fs6, $a0, 152
+ fld.d $fs7, $a0, 160
+#endif
+ sltui $a0, $a1, 1
+ add.d $a0, $a0, $a1
+ jr $ra
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..d158a3d2
--- /dev/null
+++ b/src/setjmp/loongarch64/setjmp.S
@@ -0,0 +1,34 @@
+.global __setjmp
+.global _setjmp
+.global setjmp
+.type __setjmp,@function
+.type _setjmp,@function
+.type setjmp,@function
+__setjmp:
+_setjmp:
+setjmp:
+ st.d $ra, $a0, 0
+ st.d $sp, $a0, 8
+ st.d $r21,$a0, 16
+ st.d $fp, $a0, 24
+ st.d $s0, $a0, 32
+ st.d $s1, $a0, 40
+ st.d $s2, $a0, 48
+ st.d $s3, $a0, 56
+ st.d $s4, $a0, 64
+ st.d $s5, $a0, 72
+ st.d $s6, $a0, 80
+ st.d $s7, $a0, 88
+ st.d $s8, $a0, 96
+#ifndef __loongarch_soft_float
+ fst.d $fs0, $a0, 104
+ fst.d $fs1, $a0, 112
+ fst.d $fs2, $a0, 120
+ fst.d $fs3, $a0, 128
+ fst.d $fs4, $a0, 136
+ fst.d $fs5, $a0, 144
+ fst.d $fs6, $a0, 152
+ fst.d $fs7, $a0, 160
+#endif
+ move $a0, $zero
+ jr $ra
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..f8e6daeb
--- /dev/null
+++ b/src/signal/loongarch64/restore.s
@@ -0,0 +1,10 @@
+.global __restore_rt
+.global __restore
+.hidden __restore_rt
+.hidden __restore
+.type __restore_rt,@function
+.type __restore,@function
+__restore_rt:
+__restore:
+ li.w $a7, 139
+ syscall 0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..992ab1a4
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,25 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type sigsetjmp,@function
+.type __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+ beq $a1, $zero, 1f
+ st.d $ra, $a0, 168
+ st.d $s0, $a0, 176
+ move $s0, $a0
+
+ la.global $t0, setjmp
+ jirl $ra, $t0, 0
+
+ move $a1, $a0 # Return from 'setjmp' or 'longjmp'
+ move $a0, $s0
+ ld.d $ra, $a0, 168
+ ld.d $s0, $a0, 176
+
+.hidden __sigsetjmp_tail
+ la.global $t0, __sigsetjmp_tail
+ jr $t0
+1:
+ la.global $t0, setjmp
+ jr $t0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..ffdd52f1
--- /dev/null
+++ b/src/thread/loongarch64/__set_thread_area.s
@@ -0,0 +1,7 @@
+.global __set_thread_area
+.hidden __set_thread_area
+.type __set_thread_area,@function
+__set_thread_area:
+ move $tp, $a0
+ move $a0, $zero
+ jr $ra
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..1de334af
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global __unmapself
+.type __unmapself, @function
+__unmapself:
+ li.d $a7, 215 # call munmap
+ syscall 0
+ li.d $a7, 93 # call exit
+ syscall 0
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..db9015e6
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,28 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+# a0, a1, a2, a3, a4, a5, a6
+# sys_clone(flags, stack, ptid, ctid, tls)
+# a0, a1, a2, a3, a4
+
+.global __clone
+.hidden __clone
+.type __clone,@function
+__clone:
+ # Save function pointer and argument pointer on new thread stack
+ addi.d $a1, $a1, -16
+ st.d $a0, $a1, 0 # save function pointer
+ st.d $a3, $a1, 8 # save argument pointer
+ or $a0, $a2, $zero
+ or $a2, $a4, $zero
+ or $a3, $a6, $zero
+ or $a4, $a5, $zero
+ ori $a7, $zero, 220
+ syscall 0 # call clone
+
+ beqz $a0, 1f # whether child process
+ jirl $zero, $ra, 0 # parent process return
+1:
+ ld.d $t8, $sp, 0 # function pointer
+ ld.d $a0, $sp, 8 # argument pointer
+ jirl $ra, $t8, 0 # call the user's function
+ ori $a7, $zero, 93
+ syscall 0 # child process exit
diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
new file mode 100644
index 00000000..0fbc7a47
--- /dev/null
+++ b/src/thread/loongarch64/syscall_cp.s
@@ -0,0 +1,29 @@
+.global __cp_begin
+.hidden __cp_begin
+.global __cp_end
+.hidden __cp_end
+.global __cp_cancel
+.hidden __cp_cancel
+.hidden __cancel
+.global __syscall_cp_asm
+.hidden __syscall_cp_asm
+.type __syscall_cp_asm,@function
+
+__syscall_cp_asm:
+__cp_begin:
+ ld.w $a0, $a0, 0
+ bnez $a0, __cp_cancel
+ move $t8, $a1 # reserve system call number
+ move $a0, $a2
+ move $a1, $a3
+ move $a2, $a4
+ move $a3, $a5
+ move $a4, $a6
+ move $a5, $a7
+ move $a7, $t8
+ syscall 0
+__cp_end:
+ jr $ra
+__cp_cancel:
+ la.local $t8, __cancel
+ jr $t8
--
2.37.1
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-16 2:54 ` [musl] add loongarch64 port v9 Hongliang Wang
@ 2023-11-16 16:10 ` Rich Felker
2023-11-17 7:20 ` Hongliang Wang
2023-11-16 16:44 ` [musl] add loongarch64 port v9 Szabolcs Nagy
1 sibling, 1 reply; 35+ messages in thread
From: Rich Felker @ 2023-11-16 16:10 UTC (permalink / raw)
To: Hongliang Wang; +Cc: musl
On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
> Hi,
>
> Thank you for your suggestion, I have modified the dynamic linker
> name according to the basic ABI types are specified in the ABI
> document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
> as shown in the attachment.
>
> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
> 0001-add-loongarch64-port-v9.patch are as follows:
>
> ---
> arch/loongarch64/reloc.h | 10 ++++++----
> configure | 4 +++-
> 2 files changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
> index a4482b48..6907de8e 100644
> --- a/arch/loongarch64/reloc.h
> +++ b/arch/loongarch64/reloc.h
> @@ -1,7 +1,9 @@
> -#ifdef __loongarch_soft_float
> -#define FP_SUFFIX "-sf"
> -#else
> -#define FP_SUFFIX ""
> +#if defined __loongarch_double_float
> +#define FP_SUFFIX "-lp64d"
> +#elif defined __loongarch_single_float
> +#define FP_SUFFIX "-lp64f"
> +#elif defined __loongarch_soft_float
> +#define FP_SUFFIX "-lp64s"
> #endif
>
> #define LDSO_ARCH "loongarch64" FP_SUFFIX
> diff --git a/configure b/configure
> index 55d179f1..93b06287 100755
> --- a/configure
> +++ b/configure
> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
> fi
>
> if test "$ARCH" = "loongarch64" ; then
> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
> printf "checking whether compiler support FCSRs... "
> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> --
>
> Please review again, and point them out if any questions need to be
> modified, thanks.
Why are you changing the ABI name for the existing one to something
different rather than just adding the missing ones, and doing it with
a name that's less descriptive ("-sf" is widely recognized as a
softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
part to each one that does not seem to be part of distinguishing the
float ABI?
Rich
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-16 2:54 ` [musl] add loongarch64 port v9 Hongliang Wang
2023-11-16 16:10 ` Rich Felker
@ 2023-11-16 16:44 ` Szabolcs Nagy
2023-11-16 17:18 ` Szabolcs Nagy
1 sibling, 1 reply; 35+ messages in thread
From: Szabolcs Nagy @ 2023-11-16 16:44 UTC (permalink / raw)
To: Hongliang Wang; +Cc: musl
* Hongliang Wang <wanghongliang@loongson.cn> [2023-11-16 10:54:44 +0800]:
> Thank you for your suggestion, I have modified the dynamic linker
> name according to the basic ABI types are specified in the ABI
> document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
> as shown in the attachment.
>
> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
> 0001-add-loongarch64-port-v9.patch are as follows:
note, the new names must match gcc, which seems to be the case:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/loongarch/gnu-user.h;h=9616d6e8a0b8629720a844fd0122dafef682a4cb;hb=HEAD#l36
they do *not* match the names in the cited abi document:
https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_program_interpreter_path
(uses /lib64/..-loongarch-.. instead of /lib/..-loongarch64-..)
the diff looks good.
>
> ---
> arch/loongarch64/reloc.h | 10 ++++++----
> configure | 4 +++-
> 2 files changed, 9 insertions(+), 5 deletions(-)
>
> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
> index a4482b48..6907de8e 100644
> --- a/arch/loongarch64/reloc.h
> +++ b/arch/loongarch64/reloc.h
> @@ -1,7 +1,9 @@
> -#ifdef __loongarch_soft_float
> -#define FP_SUFFIX "-sf"
> -#else
> -#define FP_SUFFIX ""
> +#if defined __loongarch_double_float
> +#define FP_SUFFIX "-lp64d"
> +#elif defined __loongarch_single_float
> +#define FP_SUFFIX "-lp64f"
> +#elif defined __loongarch_soft_float
> +#define FP_SUFFIX "-lp64s"
> #endif
>
> #define LDSO_ARCH "loongarch64" FP_SUFFIX
> diff --git a/configure b/configure
> index 55d179f1..93b06287 100755
> --- a/configure
> +++ b/configure
> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
> fi
>
> if test "$ARCH" = "loongarch64" ; then
> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
> printf "checking whether compiler support FCSRs... "
> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> --
>
> Please review again, and point them out if any questions need to be
> modified, thanks.
>
>
> Hongliang Wang
>
> 在 2023/11/14 下午9:16, Jingyun Hua 写道:
> > hi,
> >
> > I have a suggestion regarding the musl dynamic linker name for the
> > LoongArch architecture:
> >
> > The basic ABI types are specified in the ABI document of the LoongArch,
> > which can be seen:
> > https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
> >
> > and the dynamic linker name of glibc distinguishes lp64d, lp64s and
> > lp64f with abi types.The v8 patch only defines the value of SUBARCH
> > as "-sf" for “__loongarch_soft_float”, which means that only
> > “ld-musl-loongarch64.so.1” or “ld-musl-loongarch64-sf.so.1” can be
> > generated when compiled with the v8 patch.
> >
> > So I think the musl dynamic linker name for the LoongArch architecture
> > needs to be modified, maybe defined like glibc?
> >
> > Regards,
> > Jingyun Hua
> >
> > On 11/9/23 9:15 PM, Jingyun Hua wrote:
> > > Hi all,
> > >
> > > Thank you for taking the time to check this email. I'm very interested
> > > in musl and alpine, and I'd like to know the current status of this
> > > patch and what we can do for it next.
> > >
> > > After Hongliang updated this patch from v7 to v8, in order to verify it,
> > > I built the alpine linux from scratch base on this musl v8 patch on the
> > > LoongArch64 machine, and successfully compiled projects such as gcc,
> > > rust, llvm, go, etc.. Currently, more than 8,500 packages have been
> > > built and running normally in my local repository.
> > >
> > > The patch has indeed been on hold for a long time. Is it in the
> > > immediate plans? Is there anything that needs to be modified and
> > > improved?
> > >
> > > Looking forward to your reply, thanks!
> > >
> > > Regards,
> > > Jingyun Hua
> > >
> > > 在 2023/9/26 上午11:28, Hongliang Wang 写道:
> > > > Hi,
> > > >
> > > > I have fixed the issues listed below, and post
> > > > 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
> > > > please review again, if there are anything that need to be modified,
> > > > please point out, thank you.
> > > >
> > > > Hongliang Wang
> > > >
> > > > 在 2023/9/22 上午9:37, Hongliang Wang 写道:
> > > > > Hi,
> > > > >
> > > > > Thank you for your review, I will modify it according to the review
> > > > > suggestions and post v8 patch later.
> > > > >
> > > > > Hongliang Wang
> > > > >
> > > > > 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
> > > > > > * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
> > > > > > > Sorry to bother you, but I just want to know if
> > > > > > > there is any progress on
> > > > > > > this, because Alpine is blocking by this patch for a
> > > > > > > long time. As Hongliang
> > > > > > > has explained questions you mentioned one by one, if
> > > > > > > any question need to be
> > > > > > > discussed, please point them out, so that the patch
> > > > > > > can be handled further.
> > > > > >
> > > > > > i think you should post a v8 patch to move
> > > > > > this forward. (not on github, but here)
> > > > > >
> > > > > > > On 2023/8/15 下午4:17, Hongliang Wang wrote:
> > > > > > > > 在 2023/8/13 上午9:41, Rich Felker 写道:
> > > > > > > > > On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
> > > > > > > > > > On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> > > > > > > > > > -+#define __BYTE_ORDER 1234
> > > > > > > > > > ++#define __BYTE_ORDER __LITTLE_ENDIAN
> > > > > > > > >
> > > > > > > > > This is gratuitous, mismatches what is done on other archs, and is
> > > > > > > > > less safe.
> > > > > > > > >
> > > > > > > > The modification is based on the following review suggestion(
> > > > > > > > WANG Xuerui <i@xen0n.name> reviewed in
> > > > > > > > https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > >
> > > > > > > > `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
> > > > > > > > with other arches.
> > > > > >
> > > > > > please use 1234.
> > > >
> > > > --- a/arch/loongarch64/bits/alltypes.h.in
> > > > +++ b/arch/loongarch64/bits/alltypes.h.in
> > > > @@ -2,7 +2,7 @@
> > > > #define _Int64 long
> > > > #define _Reg long
> > > >
> > > > -#define __BYTE_ORDER __LITTLE_ENDIAN
> > > > +#define __BYTE_ORDER 1234
> > > > #define __LONG_MAX 0x7fffffffffffffffL
> > > >
> > > >
> > > > > >
> > > > > > > > > > -+TYPEDEF unsigned nlink_t;
> > > > > > > > > > ++TYPEDEF unsigned int nlink_t;
> > > > > > > > >
> > > > > > > > > Gratuitous and in opposite direction of
> > > > > > > > > coding style used elsewhere in
> > > > > > > > > musl. There are a few other instances of this too.
> > > > > > > > >
> > > > > > > > Based on the following review question(WANG Xuerui <i@xen0n.name>
> > > > > > > > reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > >
> > > > > > > > `unsigned int`? Same for other bare `unsigned` usages.
> > > > > > > >
> > > > > > > > I fixed it to a explicit definition.
> > > > > >
> > > > > > please use plain unsigned, not unsigned int.
> > > >
> > > > --- a/arch/loongarch64/bits/alltypes.h.in
> > > > +++ b/arch/loongarch64/bits/alltypes.h.in
> > > > @@ -2,7 +2,7 @@
> > > >
> > > > -TYPEDEF unsigned int nlink_t;
> > > > +TYPEDEF unsigned nlink_t;
> > > > TYPEDEF int blksize_t;
> > > >
> > > > > >
> > > > > > > > > > -+ register uintptr_t tp __asm__("tp");
> > > > > > > > > > -+ __asm__ ("" : "=r" (tp) );
> > > > > > > > > > ++ uintptr_t tp;
> > > > > > > > > > ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> > > > > > > > > > + return tp;
> > > > > > > > >
> > > > > > > > > Not clear what the motivation is here. Is it
> > > > > > > > > working around a compiler
> > > > > > > > > bug? The original form was more optimal.
> > > > > > > >
> > > > > > > > The modification is based on the following review suggestion(
> > > > > > > > WANG Xuerui <i@xen0n.name> reviewed in
> > > > > > > > https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > >
> > > > > > > > While the current approach works, it's a bit fragile [1], and
> > > > > > > > the simple and plain riscv version works too:
> > > > > > > >
> > > > > > > > uintptr_t tp;
> > > > > > > > __asm__ ("move %0, $tp" : "=r"(tp));
> > > > > > > >
> > > > > > > > [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
> > > > > > > >
> > > > > >
> > > > > > this looks ok to me.
> > > > > >
> > > > > > (original code looks sketchy to me.)
> > > > > >
> > > > > > > > > > +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> > > > > > > > > > -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > > > > > > > -+
> > > > > > > > > > -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> > > > > > > > > > -+ ".hidden " #sym "\n" \
> > > > > > > > > > -+ ".align 8 \n" \
> > > > > > > > > > -+ " la.local $t1, "#sym" \n" \
> > > > > > > > > > -+ " move %0, $t1 \n" \
> > > > > > > > > > -+ : "=r"(*(fp)) : : "memory" )
> > > > > > > > > > ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > > > > > >
> > > > > > > > > Not clear why this was changed. It was never
> > > > > > > > > discussed afaik. It looks
> > > > > > > > > somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
> > > > > > > > > default definition.
> > > > > > > > >
> > > > > > > > Based on the following review question(
> > > > > > > > WANG Xuerui <i@xen0n.name> reviewed
> > > > > > > > in https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > >
> > > > > > > > Does the generic version residing in ldso/dlstart.c not work?
> > > > > > > >
> > > > > > > > I found the code logic is consistent with the generic version, So
> > > > > > > > I removed the definition here and replaced it with generic version.
> > > > > >
> > > > > > i would change it back to the asm.
> > > > > >
> > > > > > generic version should work, but maybe we don't
> > > > > > want to trust the compiler here (there may be
> > > > > > ways to compile the generic code that is not
> > > > > > compatible with incompletely relocated libc.so)
> > > > > > the asm is safer.
> > > > > >
> > > > --- a/arch/loongarch64/reloc.h
> > > > +++ b/arch/loongarch64/reloc.h
> > > > @@ -18,3 +18,10 @@
> > > >
> > > > #define CRTJMP(pc,sp) __asm__ __volatile__( \
> > > > "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > +
> > > > +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> > > > + ".hidden " #sym "\n" \
> > > > + ".align 8 \n" \
> > > > + " la.local $t1, "#sym" \n" \
> > > > + " move %0, $t1 \n" \
> > > > + : "=r"(*(fp)) : : "memory" )
> > > >
> > > > > > > > > It also looks like v5->v6 rewrote sigsetjmp.
> > > > > > > > >
> > > > > > > > Based on the following review question(
> > > > > > > > WANG Xuerui <i@xen0n.name> reviewed
> > > > > > > > in https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > >
> > > > > > > > This is crazy complicated compared to the riscv port, why is the
> > > > > > > > juggling between a0/a1 and t5/t6 necessary?
> > > > > > > >
> > > > > > > > I optimized the code implementations.
> > > > > >
> > > > > > this should be ok.
> > > > > >
> > > > > > > > > v6->v7:
> > > > > > > > >
> > > > > > > > > sigcontext/mcontext_t change mostly makes sense, but the
> > > > > > > > > namespace-safe and full mcontext_t differ in
> > > > > > > > > their use of the aligned
> > > > > > > > > attribute and it's not clear that the
> > > > > > > > > attribute is needed (since the
> > > > > > > > > offset is naturally aligned and any instance
> > > > > > > > > of the object is produced
> > > > > > > > > by the kernel, not by userspace).
> > > > > > > > >
> > > > > > > > > > -+ long __uc_pad;
> > > > > > > > >
> > > > > > > > > This change to ucontext_t actually makes the
> > > > > > > > > struct ABI-incompatible
> > > > > > > > > in the namespace-safe version without the
> > > > > > > > > alignment attribute. IIRC I
> > > > > > > > > explicitly requested the explicit padding
> > > > > > > > > field to avoid this kind of
> > > > > > > > > footgun. Removing it does not seem like a good idea.
> > > > > > > > >
> > > > > > > > Initially, we add __uc_pad to ensure uc_mcontext
> > > > > > > > is 16 byte alignment.
> > > > > > > > Now, we added __attribute__((__aligned__(16))) to
> > > > > > > > uc_mcontext.__extcontext[],this can ensure
> > > > > > > > uc_mcontext is also 16 byte
> > > > > > > > alignment. so __uc_pad is not used.
> > > > > > > >
> > > > > > > > Remove __uc_pad, from the point of struct
> > > > > > > > layout, musl and kernel are
> > > > > > > > consistent. otherwise, I think it may bring a sense of inconsistency
> > > > > > > > between kernel and musl. Due to Loongarch is not
> > > > > > > > merged into musl now,
> > > > > > > > Remove it no compatibility issues.
> > > > > >
> > > > > > please add back the padding field.
> > > >
> > > > --- a/arch/loongarch64/bits/signal.h
> > > > +++ b/arch/loongarch64/bits/signal.h
> > > > @@ -40,6 +40,7 @@ typedef struct __ucontext
> > > > struct __ucontext *uc_link;
> > > > stack_t uc_stack;
> > > > sigset_t uc_sigmask;
> > > > + long __uc_pad;
> > > > mcontext_t uc_mcontext;
> > > > } ucontext_t;
> > > >
> > > > > >
> > > > > > > > > In stat.h:
> > > > > > > > >
> > > > > > > > > > -+ unsigned long __pad;
> > > > > > > > > > ++ unsigned long __pad1;
> > > > > > > > >
> > > > > > > > > This is gratuitous and makes the definition
> > > > > > > > > gratuitously mismatch what
> > > > > > > > > will become the "generic" version of
> > > > > > > > > bits/stat.h. There is no contract
> > > > > > > > > for applications to be able to access these
> > > > > > > > > padding fields by name, so
> > > > > > > > > no motivation to make their names match
> > > > > > > > > glibc's names or the kernel's.
> > > > > > > > >
> > > > > > > > OK.
> > > > > >
> > > > > > please fix it.
> > > >
> > > > --- a/arch/loongarch64/bits/stat.h
> > > > +++ b/arch/loongarch64/bits/stat.h
> > > > @@ -6,7 +6,7 @@ struct stat {
> > > > uid_t st_uid;
> > > > gid_t st_gid;
> > > > dev_t st_rdev;
> > > > - unsigned long __pad1;
> > > > + unsigned long __pad;
> > > > off_t st_size;
> > > > blksize_t st_blksize;
> > > > int __pad2;
> > > >
> > > > > >
> > > > > > > > > In fenv.S:
> > > > > > > > >
> > > > > > > > > > ++#ifdef __clang__
> > > > > > > > > > ++#define FCSR $fcsr0
> > > > > > > > > > ++#else
> > > > > > > > > > ++#define FCSR $r0
> > > > > > > > > > ++#endif
> > > > > > > > >
> > > > > > > > > It's not clear to me what's going on here. Is there a clang
> > > > > > > > > incompatibility in the assembler language you're working around? Or
> > > > > > > > > what? If so that seems like a tooling bug that should be fixed.
> > > > > > > > >
> > > > > > > > The GNU assembler cannot correctly recognize $fcsr0, but the
> > > > > > > > LLVM IAS does not have this issue, so make a distinction.
> > > > > > > > This issue has been fixed in GNU assembler 2.41. but for compatible
> > > > > > > > with GNU assembler 2.40 and below, $r0 need reserved.
> > > > > >
> > > > > > it sounds like the correct asm is $fcsr0, so that's
> > > > > > what should be used on all assemblers, not just on
> > > > > > clang as.
> > > > > >
> > > > > > only broken old gnu as should use different syntax.
> > > > > > for this a configure test is needed that adds a
> > > > > > CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
> > > > > > and use that for the ifdef.
> > > > > >
> > > > --- a/configure
> > > > +++ b/configure
> > > >
> > > > if test "$ARCH" = "loongarch64" ; then
> > > > trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> > > > +printf "checking whether compiler support FCSRs... "
> > > > +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> > > > +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> > > > +printf "yes\n"
> > > > +else
> > > > +printf "no\n"
> > > > +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
> > > > +fi
> > > > fi
> > > >
> > > > --- a/src/fenv/loongarch64/fenv.S
> > > > +++ b/src/fenv/loongarch64/fenv.S
> > > > @@ -1,9 +1,9 @@
> > > > #ifndef __loongarch_soft_float
> > > >
> > > > -#ifdef __clang__
> > > > -#define FCSR $fcsr0
> > > > -#else
> > > > +#ifdef BROKEN_LOONGARCH_FCSR_ASM
> > > > #define FCSR $r0
> > > > +#else
> > > > +#define FCSR $fcsr0
> > > > #endif
> > > >
> > > > .global feclearexcept
> > > >
> > > > > > > >
> > > > > > > > The linux kernel also has a similar distinction:
> > > > > > > >
> > > > > > > > commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> > > > > > > > Author: WANG Xuerui <git@xen0n.name>
> > > > > > > > Date: Thu Jun 29 20:58:43 2023 +0800
> > > > > > > >
> > > > > > > > LoongArch: Prepare for assemblers with
> > > > > > > > proper FCSR class support
> > > > > > > >
> > > > > > > > The GNU assembler (as of 2.40) mis-treats
> > > > > > > > FCSR operands as GPRs, but
> > > > > > > > the LLVM IAS does not. Probe for this and
> > > > > > > > refer to FCSRs as"$fcsrNN"
> > > > > > > > if support is present.
> > > > > > > >
> > > > > > > > Signed-off-by: WANG Xuerui <git@xen0n.name>
> > > > > > > > Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
> > > > > > > >
> > > > > > > > > Otherwise, everything looks as expected, I
> > > > > > > > > think. I'm okay with making
> > > > > > > > > any fixups for merging rather than throwing
> > > > > > > > > this back on your team for
> > > > > > > > > more revisions, but can you please follow up and clarify the above?
> > > > > >
> > > > > > all issues look minor.
> > > > > >
> > > > > > if you post a v8 it likely gets into a release faster.
> > > > > >
> > >
> >
> >From 2d5f9717fda5c16f10d805ce8a26f1e78de440ea Mon Sep 17 00:00:00 2001
> From: wanghongliang <wanghongliang@loongson.cn>
> Date: Wed, 15 Nov 2023 01:31:51 +0800
> Subject: [PATCH] add loongarch64 port v9.
>
> Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
> Author: Meidan Li <limeidan@loongson.cn>
> Author: Guoqi Chen <chenguoqi@loongson.cn>
> Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
> Author: Fan peng <fanpeng@loongson.cn>
> Author: Jiantao Shan <shanjiantao@loongson.cn>
> Author: Xuhui Qiang <qiangxuhui@loongson.cn>
> Author: Jingyun Hua <huajingyun@loongson.cn>
> Author: Liu xue <liuxue@loongson.cn>
> Author: Hongliang Wang <wanghongliang@loongson.cn>
>
> Signed-off-by: wanghongliang <wanghongliang@loongson.cn>
> ---
> arch/loongarch64/atomic_arch.h | 53 ++++
> arch/loongarch64/bits/alltypes.h.in | 18 ++
> arch/loongarch64/bits/fenv.h | 20 ++
> arch/loongarch64/bits/float.h | 16 ++
> arch/loongarch64/bits/posix.h | 2 +
> arch/loongarch64/bits/ptrace.h | 4 +
> arch/loongarch64/bits/reg.h | 2 +
> arch/loongarch64/bits/setjmp.h | 1 +
> arch/loongarch64/bits/signal.h | 92 +++++++
> arch/loongarch64/bits/stat.h | 18 ++
> arch/loongarch64/bits/stdint.h | 20 ++
> arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
> arch/loongarch64/bits/user.h | 5 +
> arch/loongarch64/crt_arch.h | 13 +
> arch/loongarch64/pthread_arch.h | 11 +
> arch/loongarch64/reloc.h | 29 ++
> arch/loongarch64/syscall_arch.h | 137 ++++++++++
> configure | 15 +
> include/elf.h | 104 ++++++-
> src/fenv/loongarch64/fenv.S | 78 ++++++
> src/ldso/loongarch64/dlsym.s | 7 +
> src/setjmp/loongarch64/longjmp.S | 32 +++
> src/setjmp/loongarch64/setjmp.S | 34 +++
> src/signal/loongarch64/restore.s | 10 +
> src/signal/loongarch64/sigsetjmp.s | 25 ++
> src/thread/loongarch64/__set_thread_area.s | 7 +
> src/thread/loongarch64/__unmapself.s | 7 +
> src/thread/loongarch64/clone.s | 28 ++
> src/thread/loongarch64/syscall_cp.s | 29 ++
> 29 files changed, 1119 insertions(+), 1 deletion(-)
> create mode 100644 arch/loongarch64/atomic_arch.h
> create mode 100644 arch/loongarch64/bits/alltypes.h.in
> create mode 100644 arch/loongarch64/bits/fenv.h
> create mode 100644 arch/loongarch64/bits/float.h
> create mode 100644 arch/loongarch64/bits/posix.h
> create mode 100644 arch/loongarch64/bits/ptrace.h
> create mode 100644 arch/loongarch64/bits/reg.h
> create mode 100644 arch/loongarch64/bits/setjmp.h
> create mode 100644 arch/loongarch64/bits/signal.h
> create mode 100644 arch/loongarch64/bits/stat.h
> create mode 100644 arch/loongarch64/bits/stdint.h
> create mode 100644 arch/loongarch64/bits/syscall.h.in
> create mode 100644 arch/loongarch64/bits/user.h
> create mode 100644 arch/loongarch64/crt_arch.h
> create mode 100644 arch/loongarch64/pthread_arch.h
> create mode 100644 arch/loongarch64/reloc.h
> create mode 100644 arch/loongarch64/syscall_arch.h
> create mode 100644 src/fenv/loongarch64/fenv.S
> create mode 100644 src/ldso/loongarch64/dlsym.s
> create mode 100644 src/setjmp/loongarch64/longjmp.S
> create mode 100644 src/setjmp/loongarch64/setjmp.S
> create mode 100644 src/signal/loongarch64/restore.s
> create mode 100644 src/signal/loongarch64/sigsetjmp.s
> create mode 100644 src/thread/loongarch64/__set_thread_area.s
> create mode 100644 src/thread/loongarch64/__unmapself.s
> create mode 100644 src/thread/loongarch64/clone.s
> create mode 100644 src/thread/loongarch64/syscall_cp.s
>
> diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
> new file mode 100644
> index 00000000..2225d027
> --- /dev/null
> +++ b/arch/loongarch64/atomic_arch.h
> @@ -0,0 +1,53 @@
> +#define a_ll a_ll
> +static inline int a_ll(volatile int *p)
> +{
> + int v;
> + __asm__ __volatile__ (
> + "ll.w %0, %1"
> + : "=r"(v)
> + : "ZC"(*p));
> + return v;
> +}
> +
> +#define a_sc a_sc
> +static inline int a_sc(volatile int *p, int v)
> +{
> + int r;
> + __asm__ __volatile__ (
> + "sc.w %0, %1"
> + : "=r"(r), "=ZC"(*p)
> + : "0"(v) : "memory");
> + return r;
> +}
> +
> +#define a_ll_p a_ll_p
> +static inline void *a_ll_p(volatile void *p)
> +{
> + void *v;
> + __asm__ __volatile__ (
> + "ll.d %0, %1"
> + : "=r"(v)
> + : "ZC"(*(void *volatile *)p));
> + return v;
> +}
> +
> +#define a_sc_p a_sc_p
> +static inline int a_sc_p(volatile void *p, void *v)
> +{
> + long r;
> + __asm__ __volatile__ (
> + "sc.d %0, %1"
> + : "=r"(r), "=ZC"(*(void *volatile *)p)
> + : "0"(v)
> + : "memory");
> + return r;
> +}
> +
> +#define a_barrier a_barrier
> +static inline void a_barrier()
> +{
> + __asm__ __volatile__ ("dbar 0" : : : "memory");
> +}
> +
> +#define a_pre_llsc a_barrier
> +#define a_post_llsc a_barrier
> diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
> new file mode 100644
> index 00000000..06db4096
> --- /dev/null
> +++ b/arch/loongarch64/bits/alltypes.h.in
> @@ -0,0 +1,18 @@
> +#define _Addr long
> +#define _Int64 long
> +#define _Reg long
> +
> +#define __BYTE_ORDER 1234
> +#define __LONG_MAX 0x7fffffffffffffffL
> +
> +#ifndef __cplusplus
> +TYPEDEF int wchar_t;
> +#endif
> +
> +TYPEDEF float float_t;
> +TYPEDEF double double_t;
> +
> +TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
> +
> +TYPEDEF unsigned nlink_t;
> +TYPEDEF int blksize_t;
> diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
> new file mode 100644
> index 00000000..99e916e1
> --- /dev/null
> +++ b/arch/loongarch64/bits/fenv.h
> @@ -0,0 +1,20 @@
> +#define FE_INEXACT 0x010000
> +#define FE_UNDERFLOW 0x020000
> +#define FE_OVERFLOW 0x040000
> +#define FE_DIVBYZERO 0x080000
> +#define FE_INVALID 0x100000
> +
> +#define FE_ALL_EXCEPT 0x1F0000
> +
> +#define FE_TONEAREST 0x000
> +#define FE_TOWARDZERO 0x100
> +#define FE_UPWARD 0x200
> +#define FE_DOWNWARD 0x300
> +
> +typedef unsigned fexcept_t;
> +
> +typedef struct {
> + unsigned int __cw;
> +} fenv_t;
> +
> +#define FE_DFL_ENV ((const fenv_t *) -1)
> diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
> new file mode 100644
> index 00000000..63e86d44
> --- /dev/null
> +++ b/arch/loongarch64/bits/float.h
> @@ -0,0 +1,16 @@
> +#define FLT_EVAL_METHOD 0
> +
> +#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
> +#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
> +#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
> +#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
> +
> +#define LDBL_MANT_DIG 113
> +#define LDBL_MIN_EXP (-16381)
> +#define LDBL_MAX_EXP 16384
> +
> +#define LDBL_DIG 33
> +#define LDBL_MIN_10_EXP (-4931)
> +#define LDBL_MAX_10_EXP 4932
> +
> +#define DECIMAL_DIG 36
> diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
> new file mode 100644
> index 00000000..c37b94c1
> --- /dev/null
> +++ b/arch/loongarch64/bits/posix.h
> @@ -0,0 +1,2 @@
> +#define _POSIX_V6_LP64_OFF64 1
> +#define _POSIX_V7_LP64_OFF64 1
> diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
> new file mode 100644
> index 00000000..dce2fa51
> --- /dev/null
> +++ b/arch/loongarch64/bits/ptrace.h
> @@ -0,0 +1,4 @@
> +#define PTRACE_GET_THREAD_AREA 25
> +#define PTRACE_SET_THREAD_AREA 26
> +#define PTRACE_GET_WATCH_REGS 0xd0
> +#define PTRACE_SET_WATCH_REGS 0xd1
> diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
> new file mode 100644
> index 00000000..2633f39d
> --- /dev/null
> +++ b/arch/loongarch64/bits/reg.h
> @@ -0,0 +1,2 @@
> +#undef __WORDSIZE
> +#define __WORDSIZE 64
> diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
> new file mode 100644
> index 00000000..4bfa374d
> --- /dev/null
> +++ b/arch/loongarch64/bits/setjmp.h
> @@ -0,0 +1 @@
> +typedef unsigned long __jmp_buf[23];
> diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
> new file mode 100644
> index 00000000..e1d256e7
> --- /dev/null
> +++ b/arch/loongarch64/bits/signal.h
> @@ -0,0 +1,92 @@
> +#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
> + || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> +
> +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> +#define MINSIGSTKSZ 4096
> +#define SIGSTKSZ 16384
> +#endif
> +
> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> +typedef unsigned long greg_t, gregset_t[32];
> +
> +struct sigcontext {
> + unsigned long sc_pc;
> + unsigned long sc_regs[32];
> + unsigned int sc_flags;
> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
> +};
> +
> +typedef struct {
> + unsigned long __pc;
> + unsigned long __gregs[32];
> + unsigned int __flags;
> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
> +} mcontext_t;
> +#else
> +typedef struct {
> + unsigned long __space[34];
> +} mcontext_t;
> +#endif
> +
> +struct sigaltstack {
> + void *ss_sp;
> + int ss_flags;
> + size_t ss_size;
> +};
> +
> +typedef struct __ucontext
> +{
> + unsigned long __uc_flags;
> + struct __ucontext *uc_link;
> + stack_t uc_stack;
> + sigset_t uc_sigmask;
> + long __uc_pad;
> + mcontext_t uc_mcontext;
> +} ucontext_t;
> +
> +#define SA_NOCLDSTOP 1
> +#define SA_NOCLDWAIT 2
> +#define SA_SIGINFO 4
> +#define SA_ONSTACK 0x08000000
> +#define SA_RESTART 0x10000000
> +#define SA_NODEFER 0x40000000
> +#define SA_RESETHAND 0x80000000
> +#define SA_RESTORER 0x0
> +
> +#endif
> +
> +#define SIGHUP 1
> +#define SIGINT 2
> +#define SIGQUIT 3
> +#define SIGILL 4
> +#define SIGTRAP 5
> +#define SIGABRT 6
> +#define SIGIOT SIGABRT
> +#define SIGBUS 7
> +#define SIGFPE 8
> +#define SIGKILL 9
> +#define SIGUSR1 10
> +#define SIGSEGV 11
> +#define SIGUSR2 12
> +#define SIGPIPE 13
> +#define SIGALRM 14
> +#define SIGTERM 15
> +#define SIGSTKFLT 16
> +#define SIGCHLD 17
> +#define SIGCONT 18
> +#define SIGSTOP 19
> +#define SIGTSTP 20
> +#define SIGTTIN 21
> +#define SIGTTOU 22
> +#define SIGURG 23
> +#define SIGXCPU 24
> +#define SIGXFSZ 25
> +#define SIGVTALRM 26
> +#define SIGPROF 27
> +#define SIGWINCH 28
> +#define SIGIO 29
> +#define SIGPOLL SIGIO
> +#define SIGPWR 30
> +#define SIGSYS 31
> +#define SIGUNUSED SIGSYS
> +#define _NSIG 65
> diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
> new file mode 100644
> index 00000000..b7f4221b
> --- /dev/null
> +++ b/arch/loongarch64/bits/stat.h
> @@ -0,0 +1,18 @@
> +struct stat {
> + dev_t st_dev;
> + ino_t st_ino;
> + mode_t st_mode;
> + nlink_t st_nlink;
> + uid_t st_uid;
> + gid_t st_gid;
> + dev_t st_rdev;
> + unsigned long __pad;
> + off_t st_size;
> + blksize_t st_blksize;
> + int __pad2;
> + blkcnt_t st_blocks;
> + struct timespec st_atim;
> + struct timespec st_mtim;
> + struct timespec st_ctim;
> + unsigned __unused[2];
> +};
> diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
> new file mode 100644
> index 00000000..60c12499
> --- /dev/null
> +++ b/arch/loongarch64/bits/stdint.h
> @@ -0,0 +1,20 @@
> +typedef int32_t int_fast16_t;
> +typedef int32_t int_fast32_t;
> +typedef uint32_t uint_fast16_t;
> +typedef uint32_t uint_fast32_t;
> +
> +#define INT_FAST16_MIN INT32_MIN
> +#define INT_FAST32_MIN INT32_MIN
> +
> +#define INT_FAST16_MAX INT32_MAX
> +#define INT_FAST32_MAX INT32_MAX
> +
> +#define UINT_FAST16_MAX UINT32_MAX
> +#define UINT_FAST32_MAX UINT32_MAX
> +
> +#define INTPTR_MIN INT64_MIN
> +#define INTPTR_MAX INT64_MAX
> +#define UINTPTR_MAX UINT64_MAX
> +#define PTRDIFF_MIN INT64_MIN
> +#define PTRDIFF_MAX INT64_MAX
> +#define SIZE_MAX UINT64_MAX
> diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
> new file mode 100644
> index 00000000..0980e533
> --- /dev/null
> +++ b/arch/loongarch64/bits/syscall.h.in
> @@ -0,0 +1,303 @@
> +#define __NR_io_setup 0
> +#define __NR_io_destroy 1
> +#define __NR_io_submit 2
> +#define __NR_io_cancel 3
> +#define __NR_io_getevents 4
> +#define __NR_setxattr 5
> +#define __NR_lsetxattr 6
> +#define __NR_fsetxattr 7
> +#define __NR_getxattr 8
> +#define __NR_lgetxattr 9
> +#define __NR_fgetxattr 10
> +#define __NR_listxattr 11
> +#define __NR_llistxattr 12
> +#define __NR_flistxattr 13
> +#define __NR_removexattr 14
> +#define __NR_lremovexattr 15
> +#define __NR_fremovexattr 16
> +#define __NR_getcwd 17
> +#define __NR_lookup_dcookie 18
> +#define __NR_eventfd2 19
> +#define __NR_epoll_create1 20
> +#define __NR_epoll_ctl 21
> +#define __NR_epoll_pwait 22
> +#define __NR_dup 23
> +#define __NR_dup3 24
> +#define __NR3264_fcntl 25
> +#define __NR_inotify_init1 26
> +#define __NR_inotify_add_watch 27
> +#define __NR_inotify_rm_watch 28
> +#define __NR_ioctl 29
> +#define __NR_ioprio_set 30
> +#define __NR_ioprio_get 31
> +#define __NR_flock 32
> +#define __NR_mknodat 33
> +#define __NR_mkdirat 34
> +#define __NR_unlinkat 35
> +#define __NR_symlinkat 36
> +#define __NR_linkat 37
> +#define __NR_umount2 39
> +#define __NR_mount 40
> +#define __NR_pivot_root 41
> +#define __NR_nfsservctl 42
> +#define __NR3264_statfs 43
> +#define __NR3264_fstatfs 44
> +#define __NR3264_truncate 45
> +#define __NR3264_ftruncate 46
> +#define __NR_fallocate 47
> +#define __NR_faccessat 48
> +#define __NR_chdir 49
> +#define __NR_fchdir 50
> +#define __NR_chroot 51
> +#define __NR_fchmod 52
> +#define __NR_fchmodat 53
> +#define __NR_fchownat 54
> +#define __NR_fchown 55
> +#define __NR_openat 56
> +#define __NR_close 57
> +#define __NR_vhangup 58
> +#define __NR_pipe2 59
> +#define __NR_quotactl 60
> +#define __NR_getdents64 61
> +#define __NR3264_lseek 62
> +#define __NR_read 63
> +#define __NR_write 64
> +#define __NR_readv 65
> +#define __NR_writev 66
> +#define __NR_pread64 67
> +#define __NR_pwrite64 68
> +#define __NR_preadv 69
> +#define __NR_pwritev 70
> +#define __NR3264_sendfile 71
> +#define __NR_pselect6 72
> +#define __NR_ppoll 73
> +#define __NR_signalfd4 74
> +#define __NR_vmsplice 75
> +#define __NR_splice 76
> +#define __NR_tee 77
> +#define __NR_readlinkat 78
> +#define __NR_sync 81
> +#define __NR_fsync 82
> +#define __NR_fdatasync 83
> +#define __NR_sync_file_range 84
> +#define __NR_timerfd_create 85
> +#define __NR_timerfd_settime 86
> +#define __NR_timerfd_gettime 87
> +#define __NR_utimensat 88
> +#define __NR_acct 89
> +#define __NR_capget 90
> +#define __NR_capset 91
> +#define __NR_personality 92
> +#define __NR_exit 93
> +#define __NR_exit_group 94
> +#define __NR_waitid 95
> +#define __NR_set_tid_address 96
> +#define __NR_unshare 97
> +#define __NR_futex 98
> +#define __NR_set_robust_list 99
> +#define __NR_get_robust_list 100
> +#define __NR_nanosleep 101
> +#define __NR_getitimer 102
> +#define __NR_setitimer 103
> +#define __NR_kexec_load 104
> +#define __NR_init_module 105
> +#define __NR_delete_module 106
> +#define __NR_timer_create 107
> +#define __NR_timer_gettime 108
> +#define __NR_timer_getoverrun 109
> +#define __NR_timer_settime 110
> +#define __NR_timer_delete 111
> +#define __NR_clock_settime 112
> +#define __NR_clock_gettime 113
> +#define __NR_clock_getres 114
> +#define __NR_clock_nanosleep 115
> +#define __NR_syslog 116
> +#define __NR_ptrace 117
> +#define __NR_sched_setparam 118
> +#define __NR_sched_setscheduler 119
> +#define __NR_sched_getscheduler 120
> +#define __NR_sched_getparam 121
> +#define __NR_sched_setaffinity 122
> +#define __NR_sched_getaffinity 123
> +#define __NR_sched_yield 124
> +#define __NR_sched_get_priority_max 125
> +#define __NR_sched_get_priority_min 126
> +#define __NR_sched_rr_get_interval 127
> +#define __NR_restart_syscall 128
> +#define __NR_kill 129
> +#define __NR_tkill 130
> +#define __NR_tgkill 131
> +#define __NR_sigaltstack 132
> +#define __NR_rt_sigsuspend 133
> +#define __NR_rt_sigaction 134
> +#define __NR_rt_sigprocmask 135
> +#define __NR_rt_sigpending 136
> +#define __NR_rt_sigtimedwait 137
> +#define __NR_rt_sigqueueinfo 138
> +#define __NR_rt_sigreturn 139
> +#define __NR_setpriority 140
> +#define __NR_getpriority 141
> +#define __NR_reboot 142
> +#define __NR_setregid 143
> +#define __NR_setgid 144
> +#define __NR_setreuid 145
> +#define __NR_setuid 146
> +#define __NR_setresuid 147
> +#define __NR_getresuid 148
> +#define __NR_setresgid 149
> +#define __NR_getresgid 150
> +#define __NR_setfsuid 151
> +#define __NR_setfsgid 152
> +#define __NR_times 153
> +#define __NR_setpgid 154
> +#define __NR_getpgid 155
> +#define __NR_getsid 156
> +#define __NR_setsid 157
> +#define __NR_getgroups 158
> +#define __NR_setgroups 159
> +#define __NR_uname 160
> +#define __NR_sethostname 161
> +#define __NR_setdomainname 162
> +#define __NR_getrlimit 163
> +#define __NR_setrlimit 164
> +#define __NR_getrusage 165
> +#define __NR_umask 166
> +#define __NR_prctl 167
> +#define __NR_getcpu 168
> +#define __NR_gettimeofday 169
> +#define __NR_settimeofday 170
> +#define __NR_adjtimex 171
> +#define __NR_getpid 172
> +#define __NR_getppid 173
> +#define __NR_getuid 174
> +#define __NR_geteuid 175
> +#define __NR_getgid 176
> +#define __NR_getegid 177
> +#define __NR_gettid 178
> +#define __NR_sysinfo 179
> +#define __NR_mq_open 180
> +#define __NR_mq_unlink 181
> +#define __NR_mq_timedsend 182
> +#define __NR_mq_timedreceive 183
> +#define __NR_mq_notify 184
> +#define __NR_mq_getsetattr 185
> +#define __NR_msgget 186
> +#define __NR_msgctl 187
> +#define __NR_msgrcv 188
> +#define __NR_msgsnd 189
> +#define __NR_semget 190
> +#define __NR_semctl 191
> +#define __NR_semtimedop 192
> +#define __NR_semop 193
> +#define __NR_shmget 194
> +#define __NR_shmctl 195
> +#define __NR_shmat 196
> +#define __NR_shmdt 197
> +#define __NR_socket 198
> +#define __NR_socketpair 199
> +#define __NR_bind 200
> +#define __NR_listen 201
> +#define __NR_accept 202
> +#define __NR_connect 203
> +#define __NR_getsockname 204
> +#define __NR_getpeername 205
> +#define __NR_sendto 206
> +#define __NR_recvfrom 207
> +#define __NR_setsockopt 208
> +#define __NR_getsockopt 209
> +#define __NR_shutdown 210
> +#define __NR_sendmsg 211
> +#define __NR_recvmsg 212
> +#define __NR_readahead 213
> +#define __NR_brk 214
> +#define __NR_munmap 215
> +#define __NR_mremap 216
> +#define __NR_add_key 217
> +#define __NR_request_key 218
> +#define __NR_keyctl 219
> +#define __NR_clone 220
> +#define __NR_execve 221
> +#define __NR3264_mmap 222
> +#define __NR3264_fadvise64 223
> +#define __NR_swapon 224
> +#define __NR_swapoff 225
> +#define __NR_mprotect 226
> +#define __NR_msync 227
> +#define __NR_mlock 228
> +#define __NR_munlock 229
> +#define __NR_mlockall 230
> +#define __NR_munlockall 231
> +#define __NR_mincore 232
> +#define __NR_madvise 233
> +#define __NR_remap_file_pages 234
> +#define __NR_mbind 235
> +#define __NR_get_mempolicy 236
> +#define __NR_set_mempolicy 237
> +#define __NR_migrate_pages 238
> +#define __NR_move_pages 239
> +#define __NR_rt_tgsigqueueinfo 240
> +#define __NR_perf_event_open 241
> +#define __NR_accept4 242
> +#define __NR_recvmmsg 243
> +#define __NR_arch_specific_syscall 244
> +#define __NR_wait4 260
> +#define __NR_prlimit64 261
> +#define __NR_fanotify_init 262
> +#define __NR_fanotify_mark 263
> +#define __NR_name_to_handle_at 264
> +#define __NR_open_by_handle_at 265
> +#define __NR_clock_adjtime 266
> +#define __NR_syncfs 267
> +#define __NR_setns 268
> +#define __NR_sendmmsg 269
> +#define __NR_process_vm_readv 270
> +#define __NR_process_vm_writev 271
> +#define __NR_kcmp 272
> +#define __NR_finit_module 273
> +#define __NR_sched_setattr 274
> +#define __NR_sched_getattr 275
> +#define __NR_renameat2 276
> +#define __NR_seccomp 277
> +#define __NR_getrandom 278
> +#define __NR_memfd_create 279
> +#define __NR_bpf 280
> +#define __NR_execveat 281
> +#define __NR_userfaultfd 282
> +#define __NR_membarrier 283
> +#define __NR_mlock2 284
> +#define __NR_copy_file_range 285
> +#define __NR_preadv2 286
> +#define __NR_pwritev2 287
> +#define __NR_pkey_mprotect 288
> +#define __NR_pkey_alloc 289
> +#define __NR_pkey_free 290
> +#define __NR_statx 291
> +#define __NR_io_pgetevents 292
> +#define __NR_rseq 293
> +#define __NR_kexec_file_load 294
> +#define __NR_pidfd_send_signal 424
> +#define __NR_io_uring_setup 425
> +#define __NR_io_uring_enter 426
> +#define __NR_io_uring_register 427
> +#define __NR_open_tree 428
> +#define __NR_move_mount 429
> +#define __NR_fsopen 430
> +#define __NR_fsconfig 431
> +#define __NR_fsmount 432
> +#define __NR_fspick 433
> +#define __NR_pidfd_open 434
> +#define __NR_clone3 435
> +#define __NR_close_range 436
> +#define __NR_openat2 437
> +#define __NR_pidfd_getfd 438
> +#define __NR_faccessat2 439
> +#define __NR_process_madvise 440
> +#define __NR_fcntl __NR3264_fcntl
> +#define __NR_statfs __NR3264_statfs
> +#define __NR_fstatfs __NR3264_fstatfs
> +#define __NR_truncate __NR3264_truncate
> +#define __NR_ftruncate __NR3264_ftruncate
> +#define __NR_lseek __NR3264_lseek
> +#define __NR_sendfile __NR3264_sendfile
> +#define __NR_mmap __NR3264_mmap
> +#define __NR_fadvise64 __NR3264_fadvise64
> diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
> new file mode 100644
> index 00000000..5a71d132
> --- /dev/null
> +++ b/arch/loongarch64/bits/user.h
> @@ -0,0 +1,5 @@
> +#define ELF_NGREG 45
> +#define ELF_NFPREG 33
> +
> +typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
> +typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
> diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
> new file mode 100644
> index 00000000..e0760d9e
> --- /dev/null
> +++ b/arch/loongarch64/crt_arch.h
> @@ -0,0 +1,13 @@
> +__asm__(
> +".text \n"
> +".global " START "\n"
> +".type " START ", @function\n"
> +START ":\n"
> +" move $fp, $zero\n"
> +" move $a0, $sp\n"
> +".weak _DYNAMIC\n"
> +".hidden _DYNAMIC\n"
> +" la.local $a1, _DYNAMIC\n"
> +" bstrins.d $sp, $zero, 3, 0\n"
> +" b " START "_c\n"
> +);
> diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
> new file mode 100644
> index 00000000..28fbfcd1
> --- /dev/null
> +++ b/arch/loongarch64/pthread_arch.h
> @@ -0,0 +1,11 @@
> +static inline uintptr_t __get_tp()
> +{
> + uintptr_t tp;
> + __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> + return tp;
> +}
> +
> +#define TLS_ABOVE_TP
> +#define GAP_ABOVE_TP 0
> +#define DTP_OFFSET 0
> +#define MC_PC __pc
> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
> new file mode 100644
> index 00000000..6907de8e
> --- /dev/null
> +++ b/arch/loongarch64/reloc.h
> @@ -0,0 +1,29 @@
> +#if defined __loongarch_double_float
> +#define FP_SUFFIX "-lp64d"
> +#elif defined __loongarch_single_float
> +#define FP_SUFFIX "-lp64f"
> +#elif defined __loongarch_soft_float
> +#define FP_SUFFIX "-lp64s"
> +#endif
> +
> +#define LDSO_ARCH "loongarch64" FP_SUFFIX
> +
> +#define TPOFF_K 0
> +
> +#define REL_PLT R_LARCH_JUMP_SLOT
> +#define REL_COPY R_LARCH_COPY
> +#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
> +#define REL_DTPOFF R_LARCH_TLS_DTPREL64
> +#define REL_TPOFF R_LARCH_TLS_TPREL64
> +#define REL_RELATIVE R_LARCH_RELATIVE
> +#define REL_SYMBOLIC R_LARCH_64
> +
> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> + "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> +
> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> + ".hidden " #sym "\n" \
> + ".align 8 \n" \
> + " la.local $t1, "#sym" \n" \
> + " move %0, $t1 \n" \
> + : "=r"(*(fp)) : : "memory" )
> diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
> new file mode 100644
> index 00000000..4d5e1885
> --- /dev/null
> +++ b/arch/loongarch64/syscall_arch.h
> @@ -0,0 +1,137 @@
> +#define __SYSCALL_LL_E(x) (x)
> +#define __SYSCALL_LL_O(x) (x)
> +
> +#define SYSCALL_CLOBBERLIST \
> + "$t0", "$t1", "$t2", "$t3", \
> + "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
> +
> +static inline long __syscall0(long n)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0");
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "=r"(a0)
> + : "r"(a7)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall1(long n, long a)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall2(long n, long a, long b)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> + register long a1 __asm__("$a1") = b;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7), "r"(a1)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall3(long n, long a, long b, long c)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> + register long a1 __asm__("$a1") = b;
> + register long a2 __asm__("$a2") = c;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7), "r"(a1), "r"(a2)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall4(long n, long a, long b, long c, long d)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> + register long a1 __asm__("$a1") = b;
> + register long a2 __asm__("$a2") = c;
> + register long a3 __asm__("$a3") = d;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall5(long n, long a, long b, long c, long d, long e)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> + register long a1 __asm__("$a1") = b;
> + register long a2 __asm__("$a2") = c;
> + register long a3 __asm__("$a3") = d;
> + register long a4 __asm__("$a4") = e;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> + register long a1 __asm__("$a1") = b;
> + register long a2 __asm__("$a2") = c;
> + register long a3 __asm__("$a3") = d;
> + register long a4 __asm__("$a4") = e;
> + register long a5 __asm__("$a5") = f;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
> +{
> + register long a7 __asm__("$a7") = n;
> + register long a0 __asm__("$a0") = a;
> + register long a1 __asm__("$a1") = b;
> + register long a2 __asm__("$a2") = c;
> + register long a3 __asm__("$a3") = d;
> + register long a4 __asm__("$a4") = e;
> + register long a5 __asm__("$a5") = f;
> + register long a6 __asm__("$a6") = g;
> +
> + __asm__ __volatile__ (
> + "syscall 0"
> + : "+r"(a0)
> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
> + : SYSCALL_CLOBBERLIST);
> + return a0;
> +}
> +
> +#define VDSO_USEFUL
> +#define VDSO_CGT_SYM "__vdso_clock_gettime"
> +#define VDSO_CGT_VER "LINUX_5.10"
> +
> +#define IPC_64 0
> diff --git a/configure b/configure
> index 0b966ede..93b06287 100755
> --- a/configure
> +++ b/configure
> @@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
> x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
> x86_64-nt64*) ARCH=nt64 ;;
> x86_64*) ARCH=x86_64 ;;
> +loongarch64*) ARCH=loongarch64 ;;
> m68k*) ARCH=m68k ;;
> mips64*|mipsisa64*) ARCH=mips64 ;;
> mips*) ARCH=mips ;;
> @@ -671,6 +672,20 @@ if test "$ARCH" = "aarch64" ; then
> trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
> fi
>
> +if test "$ARCH" = "loongarch64" ; then
> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
> +printf "checking whether compiler support FCSRs... "
> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> +printf "yes\n"
> +else
> +printf "no\n"
> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
> +fi
> +fi
> +
> if test "$ARCH" = "m68k" ; then
> if trycppif "__HAVE_68881__" ; then : ;
> elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
> diff --git a/include/elf.h b/include/elf.h
> index 23f2c4bc..7114f262 100644
> --- a/include/elf.h
> +++ b/include/elf.h
> @@ -315,7 +315,8 @@ typedef struct {
> #define EM_RISCV 243
> #define EM_BPF 247
> #define EM_CSKY 252
> -#define EM_NUM 253
> +#define EM_LOONGARCH 258
> +#define EM_NUM 259
>
> #define EM_ALPHA 0x9026
>
> @@ -699,6 +700,11 @@ typedef struct {
> #define NT_MIPS_FP_MODE 0x801
> #define NT_MIPS_MSA 0x802
> #define NT_VERSION 1
> +#define NT_LOONGARCH_CPUCFG 0xa00
> +#define NT_LOONGARCH_CSR 0xa01
> +#define NT_LOONGARCH_LSX 0xa02
> +#define NT_LOONGARCH_LASX 0xa03
> +#define NT_LOONGARCH_LBT 0xa04
>
>
>
> @@ -3293,6 +3299,102 @@ enum
> #define R_RISCV_SET32 56
> #define R_RISCV_32_PCREL 57
>
> +#define EF_LARCH_ABI_MODIFIER_MASK 0x07
> +#define EF_LARCH_ABI_SOFT_FLOAT 0x01
> +#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
> +#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
> +#define EF_LARCH_OBJABI_V1 0x40
> +
> +#define R_LARCH_NONE 0
> +#define R_LARCH_32 1
> +#define R_LARCH_64 2
> +#define R_LARCH_RELATIVE 3
> +#define R_LARCH_COPY 4
> +#define R_LARCH_JUMP_SLOT 5
> +#define R_LARCH_TLS_DTPMOD32 6
> +#define R_LARCH_TLS_DTPMOD64 7
> +#define R_LARCH_TLS_DTPREL32 8
> +#define R_LARCH_TLS_DTPREL64 9
> +#define R_LARCH_TLS_TPREL32 10
> +#define R_LARCH_TLS_TPREL64 11
> +#define R_LARCH_IRELATIVE 12
> +#define R_LARCH_MARK_LA 20
> +#define R_LARCH_MARK_PCREL 21
> +#define R_LARCH_SOP_PUSH_PCREL 22
> +#define R_LARCH_SOP_PUSH_ABSOLUTE 23
> +#define R_LARCH_SOP_PUSH_DUP 24
> +#define R_LARCH_SOP_PUSH_GPREL 25
> +#define R_LARCH_SOP_PUSH_TLS_TPREL 26
> +#define R_LARCH_SOP_PUSH_TLS_GOT 27
> +#define R_LARCH_SOP_PUSH_TLS_GD 28
> +#define R_LARCH_SOP_PUSH_PLT_PCREL 29
> +#define R_LARCH_SOP_ASSERT 30
> +#define R_LARCH_SOP_NOT 31
> +#define R_LARCH_SOP_SUB 32
> +#define R_LARCH_SOP_SL 33
> +#define R_LARCH_SOP_SR 34
> +#define R_LARCH_SOP_ADD 35
> +#define R_LARCH_SOP_AND 36
> +#define R_LARCH_SOP_IF_ELSE 37
> +#define R_LARCH_SOP_POP_32_S_10_5 38
> +#define R_LARCH_SOP_POP_32_U_10_12 39
> +#define R_LARCH_SOP_POP_32_S_10_12 40
> +#define R_LARCH_SOP_POP_32_S_10_16 41
> +#define R_LARCH_SOP_POP_32_S_10_16_S2 42
> +#define R_LARCH_SOP_POP_32_S_5_20 43
> +#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
> +#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
> +#define R_LARCH_SOP_POP_32_U 46
> +#define R_LARCH_ADD8 47
> +#define R_LARCH_ADD16 48
> +#define R_LARCH_ADD24 49
> +#define R_LARCH_ADD32 50
> +#define R_LARCH_ADD64 51
> +#define R_LARCH_SUB8 52
> +#define R_LARCH_SUB16 53
> +#define R_LARCH_SUB24 54
> +#define R_LARCH_SUB32 55
> +#define R_LARCH_SUB64 56
> +#define R_LARCH_GNU_VTINHERIT 57
> +#define R_LARCH_GNU_VTENTRY 58
> +#define R_LARCH_B16 64
> +#define R_LARCH_B21 65
> +#define R_LARCH_B26 66
> +#define R_LARCH_ABS_HI20 67
> +#define R_LARCH_ABS_LO12 68
> +#define R_LARCH_ABS64_LO20 69
> +#define R_LARCH_ABS64_HI12 70
> +#define R_LARCH_PCALA_HI20 71
> +#define R_LARCH_PCALA_LO12 72
> +#define R_LARCH_PCALA64_LO20 73
> +#define R_LARCH_PCALA64_HI12 74
> +#define R_LARCH_GOT_PC_HI20 75
> +#define R_LARCH_GOT_PC_LO12 76
> +#define R_LARCH_GOT64_PC_LO20 77
> +#define R_LARCH_GOT64_PC_HI12 78
> +#define R_LARCH_GOT_HI20 79
> +#define R_LARCH_GOT_LO12 80
> +#define R_LARCH_GOT64_LO20 81
> +#define R_LARCH_GOT64_HI12 82
> +#define R_LARCH_TLS_LE_HI20 83
> +#define R_LARCH_TLS_LE_LO12 84
> +#define R_LARCH_TLS_LE64_LO20 85
> +#define R_LARCH_TLS_LE64_HI12 86
> +#define R_LARCH_TLS_IE_PC_HI20 87
> +#define R_LARCH_TLS_IE_PC_LO12 88
> +#define R_LARCH_TLS_IE64_PC_LO20 89
> +#define R_LARCH_TLS_IE64_PC_HI12 90
> +#define R_LARCH_TLS_IE_HI20 91
> +#define R_LARCH_TLS_IE_LO12 92
> +#define R_LARCH_TLS_IE64_LO20 93
> +#define R_LARCH_TLS_IE64_HI12 94
> +#define R_LARCH_TLS_LD_PC_HI20 95
> +#define R_LARCH_TLS_LD_HI20 96
> +#define R_LARCH_TLS_GD_PC_HI20 97
> +#define R_LARCH_TLS_GD_HI20 98
> +#define R_LARCH_32_PCREL 99
> +#define R_LARCH_RELAX 100
> +
> #ifdef __cplusplus
> }
> #endif
> diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
> new file mode 100644
> index 00000000..54064e01
> --- /dev/null
> +++ b/src/fenv/loongarch64/fenv.S
> @@ -0,0 +1,78 @@
> +#ifndef __loongarch_soft_float
> +
> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
> +#define FCSR $r0
> +#else
> +#define FCSR $fcsr0
> +#endif
> +
> +.global feclearexcept
> +.type feclearexcept,@function
> +feclearexcept:
> + li.w $t0, 0x1f0000
> + and $a0, $a0, $t0
> + movfcsr2gr $t1, FCSR
> + andn $t1, $t1, $a0
> + movgr2fcsr FCSR, $t1
> + li.w $a0, 0
> + jr $ra
> +
> +.global feraiseexcept
> +.type feraiseexcept,@function
> +feraiseexcept:
> + li.w $t0, 0x1f0000
> + and $a0, $a0, $t0
> + movfcsr2gr $t1, FCSR
> + or $t1, $t1, $a0
> + movgr2fcsr FCSR, $t1
> + li.w $a0, 0
> + jr $ra
> +
> +.global fetestexcept
> +.type fetestexcept,@function
> +fetestexcept:
> + li.w $t0, 0x1f0000
> + and $a0, $a0, $t0
> + movfcsr2gr $t1, FCSR
> + and $a0, $t1, $a0
> + jr $ra
> +
> +.global fegetround
> +.type fegetround,@function
> +fegetround:
> + movfcsr2gr $t0, FCSR
> + andi $a0, $t0, 0x300
> + jr $ra
> +
> +.global __fesetround
> +.hidden __fesetround
> +.type __fesetround,@function
> +__fesetround:
> + li.w $t0, 0x300
> + and $a0, $a0, $t0
> + movfcsr2gr $t1, FCSR
> + andn $t1, $t1, $t0
> + or $t1, $t1, $a0
> + movgr2fcsr FCSR, $t1
> + li.w $a0, 0
> + jr $ra
> +
> +.global fegetenv
> +.type fegetenv,@function
> +fegetenv:
> + movfcsr2gr $t0, FCSR
> + st.w $t0, $a0, 0
> + li.w $a0, 0
> + jr $ra
> +
> +.global fesetenv
> +.type fesetenv,@function
> +fesetenv:
> + addi.d $t0, $a0, 1
> + beq $t0, $r0, 1f
> + ld.w $t0, $a0, 0
> +1: movgr2fcsr FCSR, $t0
> + li.w $a0, 0
> + jr $ra
> +
> +#endif
> diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
> new file mode 100644
> index 00000000..26fabcdb
> --- /dev/null
> +++ b/src/ldso/loongarch64/dlsym.s
> @@ -0,0 +1,7 @@
> +.global dlsym
> +.hidden __dlsym
> +.type dlsym,@function
> +dlsym:
> + move $a2, $ra
> + la.global $t0, __dlsym
> + jr $t0
> diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
> new file mode 100644
> index 00000000..896d2e26
> --- /dev/null
> +++ b/src/setjmp/loongarch64/longjmp.S
> @@ -0,0 +1,32 @@
> +.global _longjmp
> +.global longjmp
> +.type _longjmp,@function
> +.type longjmp,@function
> +_longjmp:
> +longjmp:
> + ld.d $ra, $a0, 0
> + ld.d $sp, $a0, 8
> + ld.d $r21,$a0, 16
> + ld.d $fp, $a0, 24
> + ld.d $s0, $a0, 32
> + ld.d $s1, $a0, 40
> + ld.d $s2, $a0, 48
> + ld.d $s3, $a0, 56
> + ld.d $s4, $a0, 64
> + ld.d $s5, $a0, 72
> + ld.d $s6, $a0, 80
> + ld.d $s7, $a0, 88
> + ld.d $s8, $a0, 96
> +#ifndef __loongarch_soft_float
> + fld.d $fs0, $a0, 104
> + fld.d $fs1, $a0, 112
> + fld.d $fs2, $a0, 120
> + fld.d $fs3, $a0, 128
> + fld.d $fs4, $a0, 136
> + fld.d $fs5, $a0, 144
> + fld.d $fs6, $a0, 152
> + fld.d $fs7, $a0, 160
> +#endif
> + sltui $a0, $a1, 1
> + add.d $a0, $a0, $a1
> + jr $ra
> diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
> new file mode 100644
> index 00000000..d158a3d2
> --- /dev/null
> +++ b/src/setjmp/loongarch64/setjmp.S
> @@ -0,0 +1,34 @@
> +.global __setjmp
> +.global _setjmp
> +.global setjmp
> +.type __setjmp,@function
> +.type _setjmp,@function
> +.type setjmp,@function
> +__setjmp:
> +_setjmp:
> +setjmp:
> + st.d $ra, $a0, 0
> + st.d $sp, $a0, 8
> + st.d $r21,$a0, 16
> + st.d $fp, $a0, 24
> + st.d $s0, $a0, 32
> + st.d $s1, $a0, 40
> + st.d $s2, $a0, 48
> + st.d $s3, $a0, 56
> + st.d $s4, $a0, 64
> + st.d $s5, $a0, 72
> + st.d $s6, $a0, 80
> + st.d $s7, $a0, 88
> + st.d $s8, $a0, 96
> +#ifndef __loongarch_soft_float
> + fst.d $fs0, $a0, 104
> + fst.d $fs1, $a0, 112
> + fst.d $fs2, $a0, 120
> + fst.d $fs3, $a0, 128
> + fst.d $fs4, $a0, 136
> + fst.d $fs5, $a0, 144
> + fst.d $fs6, $a0, 152
> + fst.d $fs7, $a0, 160
> +#endif
> + move $a0, $zero
> + jr $ra
> diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
> new file mode 100644
> index 00000000..f8e6daeb
> --- /dev/null
> +++ b/src/signal/loongarch64/restore.s
> @@ -0,0 +1,10 @@
> +.global __restore_rt
> +.global __restore
> +.hidden __restore_rt
> +.hidden __restore
> +.type __restore_rt,@function
> +.type __restore,@function
> +__restore_rt:
> +__restore:
> + li.w $a7, 139
> + syscall 0
> diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
> new file mode 100644
> index 00000000..992ab1a4
> --- /dev/null
> +++ b/src/signal/loongarch64/sigsetjmp.s
> @@ -0,0 +1,25 @@
> +.global sigsetjmp
> +.global __sigsetjmp
> +.type sigsetjmp,@function
> +.type __sigsetjmp,@function
> +sigsetjmp:
> +__sigsetjmp:
> + beq $a1, $zero, 1f
> + st.d $ra, $a0, 168
> + st.d $s0, $a0, 176
> + move $s0, $a0
> +
> + la.global $t0, setjmp
> + jirl $ra, $t0, 0
> +
> + move $a1, $a0 # Return from 'setjmp' or 'longjmp'
> + move $a0, $s0
> + ld.d $ra, $a0, 168
> + ld.d $s0, $a0, 176
> +
> +.hidden __sigsetjmp_tail
> + la.global $t0, __sigsetjmp_tail
> + jr $t0
> +1:
> + la.global $t0, setjmp
> + jr $t0
> diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
> new file mode 100644
> index 00000000..ffdd52f1
> --- /dev/null
> +++ b/src/thread/loongarch64/__set_thread_area.s
> @@ -0,0 +1,7 @@
> +.global __set_thread_area
> +.hidden __set_thread_area
> +.type __set_thread_area,@function
> +__set_thread_area:
> + move $tp, $a0
> + move $a0, $zero
> + jr $ra
> diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
> new file mode 100644
> index 00000000..1de334af
> --- /dev/null
> +++ b/src/thread/loongarch64/__unmapself.s
> @@ -0,0 +1,7 @@
> +.global __unmapself
> +.type __unmapself, @function
> +__unmapself:
> + li.d $a7, 215 # call munmap
> + syscall 0
> + li.d $a7, 93 # call exit
> + syscall 0
> diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
> new file mode 100644
> index 00000000..db9015e6
> --- /dev/null
> +++ b/src/thread/loongarch64/clone.s
> @@ -0,0 +1,28 @@
> +#__clone(func, stack, flags, arg, ptid, tls, ctid)
> +# a0, a1, a2, a3, a4, a5, a6
> +# sys_clone(flags, stack, ptid, ctid, tls)
> +# a0, a1, a2, a3, a4
> +
> +.global __clone
> +.hidden __clone
> +.type __clone,@function
> +__clone:
> + # Save function pointer and argument pointer on new thread stack
> + addi.d $a1, $a1, -16
> + st.d $a0, $a1, 0 # save function pointer
> + st.d $a3, $a1, 8 # save argument pointer
> + or $a0, $a2, $zero
> + or $a2, $a4, $zero
> + or $a3, $a6, $zero
> + or $a4, $a5, $zero
> + ori $a7, $zero, 220
> + syscall 0 # call clone
> +
> + beqz $a0, 1f # whether child process
> + jirl $zero, $ra, 0 # parent process return
> +1:
> + ld.d $t8, $sp, 0 # function pointer
> + ld.d $a0, $sp, 8 # argument pointer
> + jirl $ra, $t8, 0 # call the user's function
> + ori $a7, $zero, 93
> + syscall 0 # child process exit
> diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
> new file mode 100644
> index 00000000..0fbc7a47
> --- /dev/null
> +++ b/src/thread/loongarch64/syscall_cp.s
> @@ -0,0 +1,29 @@
> +.global __cp_begin
> +.hidden __cp_begin
> +.global __cp_end
> +.hidden __cp_end
> +.global __cp_cancel
> +.hidden __cp_cancel
> +.hidden __cancel
> +.global __syscall_cp_asm
> +.hidden __syscall_cp_asm
> +.type __syscall_cp_asm,@function
> +
> +__syscall_cp_asm:
> +__cp_begin:
> + ld.w $a0, $a0, 0
> + bnez $a0, __cp_cancel
> + move $t8, $a1 # reserve system call number
> + move $a0, $a2
> + move $a1, $a3
> + move $a2, $a4
> + move $a3, $a5
> + move $a4, $a6
> + move $a5, $a7
> + move $a7, $t8
> + syscall 0
> +__cp_end:
> + jr $ra
> +__cp_cancel:
> + la.local $t8, __cancel
> + jr $t8
> --
> 2.37.1
>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-16 16:44 ` [musl] add loongarch64 port v9 Szabolcs Nagy
@ 2023-11-16 17:18 ` Szabolcs Nagy
2023-11-17 7:19 ` Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Szabolcs Nagy @ 2023-11-16 17:18 UTC (permalink / raw)
To: Hongliang Wang, musl
* Szabolcs Nagy <nsz@port70.net> [2023-11-16 17:44:20 +0100]:
> * Hongliang Wang <wanghongliang@loongson.cn> [2023-11-16 10:54:44 +0800]:
> > Thank you for your suggestion, I have modified the dynamic linker
> > name according to the basic ABI types are specified in the ABI
> > document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
> > as shown in the attachment.
> >
> > Based on 0001-add-loongarch64-port-v8.patch,the modifications for
> > 0001-add-loongarch64-port-v9.patch are as follows:
>
> note, the new names must match gcc, which seems to be the case:
>
> https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/loongarch/gnu-user.h;h=9616d6e8a0b8629720a844fd0122dafef682a4cb;hb=HEAD#l36
this seems to be new for gcc-14 and not present in any
released version of gcc, so in principle gcc can be
changed.
we just have to make sure whatever is committed in musl
is compatible with whatever that gets released in gcc-14
also backport that change to gcc-13 and gcc-12 which
currently have a broken dynamic linker spec:
+#define MUSL_DYNAMIC_LINKER \
+ "/lib" ABI_GRLEN_SPEC "/ld-musl-loongarch-" ABI_SPEC ".so.1"
>
> they do *not* match the names in the cited abi document:
>
> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_program_interpreter_path
>
> (uses /lib64/..-loongarch-.. instead of /lib/..-loongarch64-..)
>
> the diff looks good.
>
> >
> > ---
> > arch/loongarch64/reloc.h | 10 ++++++----
> > configure | 4 +++-
> > 2 files changed, 9 insertions(+), 5 deletions(-)
> >
> > diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
> > index a4482b48..6907de8e 100644
> > --- a/arch/loongarch64/reloc.h
> > +++ b/arch/loongarch64/reloc.h
> > @@ -1,7 +1,9 @@
> > -#ifdef __loongarch_soft_float
> > -#define FP_SUFFIX "-sf"
> > -#else
> > -#define FP_SUFFIX ""
> > +#if defined __loongarch_double_float
> > +#define FP_SUFFIX "-lp64d"
> > +#elif defined __loongarch_single_float
> > +#define FP_SUFFIX "-lp64f"
> > +#elif defined __loongarch_soft_float
> > +#define FP_SUFFIX "-lp64s"
> > #endif
> >
> > #define LDSO_ARCH "loongarch64" FP_SUFFIX
> > diff --git a/configure b/configure
> > index 55d179f1..93b06287 100755
> > --- a/configure
> > +++ b/configure
> > @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
> > fi
> >
> > if test "$ARCH" = "loongarch64" ; then
> > -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> > +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
> > +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
> > +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
> > printf "checking whether compiler support FCSRs... "
> > echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> > if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> > --
> >
> > Please review again, and point them out if any questions need to be
> > modified, thanks.
> >
> >
> > Hongliang Wang
> >
> > 在 2023/11/14 下午9:16, Jingyun Hua 写道:
> > > hi,
> > >
> > > I have a suggestion regarding the musl dynamic linker name for the
> > > LoongArch architecture:
> > >
> > > The basic ABI types are specified in the ABI document of the LoongArch,
> > > which can be seen:
> > > https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
> > >
> > > and the dynamic linker name of glibc distinguishes lp64d, lp64s and
> > > lp64f with abi types.The v8 patch only defines the value of SUBARCH
> > > as "-sf" for “__loongarch_soft_float”, which means that only
> > > “ld-musl-loongarch64.so.1” or “ld-musl-loongarch64-sf.so.1” can be
> > > generated when compiled with the v8 patch.
> > >
> > > So I think the musl dynamic linker name for the LoongArch architecture
> > > needs to be modified, maybe defined like glibc?
> > >
> > > Regards,
> > > Jingyun Hua
> > >
> > > On 11/9/23 9:15 PM, Jingyun Hua wrote:
> > > > Hi all,
> > > >
> > > > Thank you for taking the time to check this email. I'm very interested
> > > > in musl and alpine, and I'd like to know the current status of this
> > > > patch and what we can do for it next.
> > > >
> > > > After Hongliang updated this patch from v7 to v8, in order to verify it,
> > > > I built the alpine linux from scratch base on this musl v8 patch on the
> > > > LoongArch64 machine, and successfully compiled projects such as gcc,
> > > > rust, llvm, go, etc.. Currently, more than 8,500 packages have been
> > > > built and running normally in my local repository.
> > > >
> > > > The patch has indeed been on hold for a long time. Is it in the
> > > > immediate plans? Is there anything that needs to be modified and
> > > > improved?
> > > >
> > > > Looking forward to your reply, thanks!
> > > >
> > > > Regards,
> > > > Jingyun Hua
> > > >
> > > > 在 2023/9/26 上午11:28, Hongliang Wang 写道:
> > > > > Hi,
> > > > >
> > > > > I have fixed the issues listed below, and post
> > > > > 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
> > > > > please review again, if there are anything that need to be modified,
> > > > > please point out, thank you.
> > > > >
> > > > > Hongliang Wang
> > > > >
> > > > > 在 2023/9/22 上午9:37, Hongliang Wang 写道:
> > > > > > Hi,
> > > > > >
> > > > > > Thank you for your review, I will modify it according to the review
> > > > > > suggestions and post v8 patch later.
> > > > > >
> > > > > > Hongliang Wang
> > > > > >
> > > > > > 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
> > > > > > > * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
> > > > > > > > Sorry to bother you, but I just want to know if
> > > > > > > > there is any progress on
> > > > > > > > this, because Alpine is blocking by this patch for a
> > > > > > > > long time. As Hongliang
> > > > > > > > has explained questions you mentioned one by one, if
> > > > > > > > any question need to be
> > > > > > > > discussed, please point them out, so that the patch
> > > > > > > > can be handled further.
> > > > > > >
> > > > > > > i think you should post a v8 patch to move
> > > > > > > this forward. (not on github, but here)
> > > > > > >
> > > > > > > > On 2023/8/15 下午4:17, Hongliang Wang wrote:
> > > > > > > > > 在 2023/8/13 上午9:41, Rich Felker 写道:
> > > > > > > > > > On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
> > > > > > > > > > > On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
> > > > > > > > > > > -+#define __BYTE_ORDER 1234
> > > > > > > > > > > ++#define __BYTE_ORDER __LITTLE_ENDIAN
> > > > > > > > > >
> > > > > > > > > > This is gratuitous, mismatches what is done on other archs, and is
> > > > > > > > > > less safe.
> > > > > > > > > >
> > > > > > > > > The modification is based on the following review suggestion(
> > > > > > > > > WANG Xuerui <i@xen0n.name> reviewed in
> > > > > > > > > https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > > >
> > > > > > > > > `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
> > > > > > > > > with other arches.
> > > > > > >
> > > > > > > please use 1234.
> > > > >
> > > > > --- a/arch/loongarch64/bits/alltypes.h.in
> > > > > +++ b/arch/loongarch64/bits/alltypes.h.in
> > > > > @@ -2,7 +2,7 @@
> > > > > #define _Int64 long
> > > > > #define _Reg long
> > > > >
> > > > > -#define __BYTE_ORDER __LITTLE_ENDIAN
> > > > > +#define __BYTE_ORDER 1234
> > > > > #define __LONG_MAX 0x7fffffffffffffffL
> > > > >
> > > > >
> > > > > > >
> > > > > > > > > > > -+TYPEDEF unsigned nlink_t;
> > > > > > > > > > > ++TYPEDEF unsigned int nlink_t;
> > > > > > > > > >
> > > > > > > > > > Gratuitous and in opposite direction of
> > > > > > > > > > coding style used elsewhere in
> > > > > > > > > > musl. There are a few other instances of this too.
> > > > > > > > > >
> > > > > > > > > Based on the following review question(WANG Xuerui <i@xen0n.name>
> > > > > > > > > reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > > >
> > > > > > > > > `unsigned int`? Same for other bare `unsigned` usages.
> > > > > > > > >
> > > > > > > > > I fixed it to a explicit definition.
> > > > > > >
> > > > > > > please use plain unsigned, not unsigned int.
> > > > >
> > > > > --- a/arch/loongarch64/bits/alltypes.h.in
> > > > > +++ b/arch/loongarch64/bits/alltypes.h.in
> > > > > @@ -2,7 +2,7 @@
> > > > >
> > > > > -TYPEDEF unsigned int nlink_t;
> > > > > +TYPEDEF unsigned nlink_t;
> > > > > TYPEDEF int blksize_t;
> > > > >
> > > > > > >
> > > > > > > > > > > -+ register uintptr_t tp __asm__("tp");
> > > > > > > > > > > -+ __asm__ ("" : "=r" (tp) );
> > > > > > > > > > > ++ uintptr_t tp;
> > > > > > > > > > > ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> > > > > > > > > > > + return tp;
> > > > > > > > > >
> > > > > > > > > > Not clear what the motivation is here. Is it
> > > > > > > > > > working around a compiler
> > > > > > > > > > bug? The original form was more optimal.
> > > > > > > > >
> > > > > > > > > The modification is based on the following review suggestion(
> > > > > > > > > WANG Xuerui <i@xen0n.name> reviewed in
> > > > > > > > > https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > > >
> > > > > > > > > While the current approach works, it's a bit fragile [1], and
> > > > > > > > > the simple and plain riscv version works too:
> > > > > > > > >
> > > > > > > > > uintptr_t tp;
> > > > > > > > > __asm__ ("move %0, $tp" : "=r"(tp));
> > > > > > > > >
> > > > > > > > > [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
> > > > > > > > >
> > > > > > >
> > > > > > > this looks ok to me.
> > > > > > >
> > > > > > > (original code looks sketchy to me.)
> > > > > > >
> > > > > > > > > > > +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> > > > > > > > > > > -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > > > > > > > > -+
> > > > > > > > > > > -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> > > > > > > > > > > -+ ".hidden " #sym "\n" \
> > > > > > > > > > > -+ ".align 8 \n" \
> > > > > > > > > > > -+ " la.local $t1, "#sym" \n" \
> > > > > > > > > > > -+ " move %0, $t1 \n" \
> > > > > > > > > > > -+ : "=r"(*(fp)) : : "memory" )
> > > > > > > > > > > ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > > > > > > >
> > > > > > > > > > Not clear why this was changed. It was never
> > > > > > > > > > discussed afaik. It looks
> > > > > > > > > > somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
> > > > > > > > > > default definition.
> > > > > > > > > >
> > > > > > > > > Based on the following review question(
> > > > > > > > > WANG Xuerui <i@xen0n.name> reviewed
> > > > > > > > > in https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > > >
> > > > > > > > > Does the generic version residing in ldso/dlstart.c not work?
> > > > > > > > >
> > > > > > > > > I found the code logic is consistent with the generic version, So
> > > > > > > > > I removed the definition here and replaced it with generic version.
> > > > > > >
> > > > > > > i would change it back to the asm.
> > > > > > >
> > > > > > > generic version should work, but maybe we don't
> > > > > > > want to trust the compiler here (there may be
> > > > > > > ways to compile the generic code that is not
> > > > > > > compatible with incompletely relocated libc.so)
> > > > > > > the asm is safer.
> > > > > > >
> > > > > --- a/arch/loongarch64/reloc.h
> > > > > +++ b/arch/loongarch64/reloc.h
> > > > > @@ -18,3 +18,10 @@
> > > > >
> > > > > #define CRTJMP(pc,sp) __asm__ __volatile__( \
> > > > > "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > > > > +
> > > > > +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> > > > > + ".hidden " #sym "\n" \
> > > > > + ".align 8 \n" \
> > > > > + " la.local $t1, "#sym" \n" \
> > > > > + " move %0, $t1 \n" \
> > > > > + : "=r"(*(fp)) : : "memory" )
> > > > >
> > > > > > > > > > It also looks like v5->v6 rewrote sigsetjmp.
> > > > > > > > > >
> > > > > > > > > Based on the following review question(
> > > > > > > > > WANG Xuerui <i@xen0n.name> reviewed
> > > > > > > > > in https://www.openwall.com/lists/musl/2022/10/12/1):
> > > > > > > > >
> > > > > > > > > This is crazy complicated compared to the riscv port, why is the
> > > > > > > > > juggling between a0/a1 and t5/t6 necessary?
> > > > > > > > >
> > > > > > > > > I optimized the code implementations.
> > > > > > >
> > > > > > > this should be ok.
> > > > > > >
> > > > > > > > > > v6->v7:
> > > > > > > > > >
> > > > > > > > > > sigcontext/mcontext_t change mostly makes sense, but the
> > > > > > > > > > namespace-safe and full mcontext_t differ in
> > > > > > > > > > their use of the aligned
> > > > > > > > > > attribute and it's not clear that the
> > > > > > > > > > attribute is needed (since the
> > > > > > > > > > offset is naturally aligned and any instance
> > > > > > > > > > of the object is produced
> > > > > > > > > > by the kernel, not by userspace).
> > > > > > > > > >
> > > > > > > > > > > -+ long __uc_pad;
> > > > > > > > > >
> > > > > > > > > > This change to ucontext_t actually makes the
> > > > > > > > > > struct ABI-incompatible
> > > > > > > > > > in the namespace-safe version without the
> > > > > > > > > > alignment attribute. IIRC I
> > > > > > > > > > explicitly requested the explicit padding
> > > > > > > > > > field to avoid this kind of
> > > > > > > > > > footgun. Removing it does not seem like a good idea.
> > > > > > > > > >
> > > > > > > > > Initially, we add __uc_pad to ensure uc_mcontext
> > > > > > > > > is 16 byte alignment.
> > > > > > > > > Now, we added __attribute__((__aligned__(16))) to
> > > > > > > > > uc_mcontext.__extcontext[],this can ensure
> > > > > > > > > uc_mcontext is also 16 byte
> > > > > > > > > alignment. so __uc_pad is not used.
> > > > > > > > >
> > > > > > > > > Remove __uc_pad, from the point of struct
> > > > > > > > > layout, musl and kernel are
> > > > > > > > > consistent. otherwise, I think it may bring a sense of inconsistency
> > > > > > > > > between kernel and musl. Due to Loongarch is not
> > > > > > > > > merged into musl now,
> > > > > > > > > Remove it no compatibility issues.
> > > > > > >
> > > > > > > please add back the padding field.
> > > > >
> > > > > --- a/arch/loongarch64/bits/signal.h
> > > > > +++ b/arch/loongarch64/bits/signal.h
> > > > > @@ -40,6 +40,7 @@ typedef struct __ucontext
> > > > > struct __ucontext *uc_link;
> > > > > stack_t uc_stack;
> > > > > sigset_t uc_sigmask;
> > > > > + long __uc_pad;
> > > > > mcontext_t uc_mcontext;
> > > > > } ucontext_t;
> > > > >
> > > > > > >
> > > > > > > > > > In stat.h:
> > > > > > > > > >
> > > > > > > > > > > -+ unsigned long __pad;
> > > > > > > > > > > ++ unsigned long __pad1;
> > > > > > > > > >
> > > > > > > > > > This is gratuitous and makes the definition
> > > > > > > > > > gratuitously mismatch what
> > > > > > > > > > will become the "generic" version of
> > > > > > > > > > bits/stat.h. There is no contract
> > > > > > > > > > for applications to be able to access these
> > > > > > > > > > padding fields by name, so
> > > > > > > > > > no motivation to make their names match
> > > > > > > > > > glibc's names or the kernel's.
> > > > > > > > > >
> > > > > > > > > OK.
> > > > > > >
> > > > > > > please fix it.
> > > > >
> > > > > --- a/arch/loongarch64/bits/stat.h
> > > > > +++ b/arch/loongarch64/bits/stat.h
> > > > > @@ -6,7 +6,7 @@ struct stat {
> > > > > uid_t st_uid;
> > > > > gid_t st_gid;
> > > > > dev_t st_rdev;
> > > > > - unsigned long __pad1;
> > > > > + unsigned long __pad;
> > > > > off_t st_size;
> > > > > blksize_t st_blksize;
> > > > > int __pad2;
> > > > >
> > > > > > >
> > > > > > > > > > In fenv.S:
> > > > > > > > > >
> > > > > > > > > > > ++#ifdef __clang__
> > > > > > > > > > > ++#define FCSR $fcsr0
> > > > > > > > > > > ++#else
> > > > > > > > > > > ++#define FCSR $r0
> > > > > > > > > > > ++#endif
> > > > > > > > > >
> > > > > > > > > > It's not clear to me what's going on here. Is there a clang
> > > > > > > > > > incompatibility in the assembler language you're working around? Or
> > > > > > > > > > what? If so that seems like a tooling bug that should be fixed.
> > > > > > > > > >
> > > > > > > > > The GNU assembler cannot correctly recognize $fcsr0, but the
> > > > > > > > > LLVM IAS does not have this issue, so make a distinction.
> > > > > > > > > This issue has been fixed in GNU assembler 2.41. but for compatible
> > > > > > > > > with GNU assembler 2.40 and below, $r0 need reserved.
> > > > > > >
> > > > > > > it sounds like the correct asm is $fcsr0, so that's
> > > > > > > what should be used on all assemblers, not just on
> > > > > > > clang as.
> > > > > > >
> > > > > > > only broken old gnu as should use different syntax.
> > > > > > > for this a configure test is needed that adds a
> > > > > > > CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
> > > > > > > and use that for the ifdef.
> > > > > > >
> > > > > --- a/configure
> > > > > +++ b/configure
> > > > >
> > > > > if test "$ARCH" = "loongarch64" ; then
> > > > > trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> > > > > +printf "checking whether compiler support FCSRs... "
> > > > > +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> > > > > +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> > > > > +printf "yes\n"
> > > > > +else
> > > > > +printf "no\n"
> > > > > +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
> > > > > +fi
> > > > > fi
> > > > >
> > > > > --- a/src/fenv/loongarch64/fenv.S
> > > > > +++ b/src/fenv/loongarch64/fenv.S
> > > > > @@ -1,9 +1,9 @@
> > > > > #ifndef __loongarch_soft_float
> > > > >
> > > > > -#ifdef __clang__
> > > > > -#define FCSR $fcsr0
> > > > > -#else
> > > > > +#ifdef BROKEN_LOONGARCH_FCSR_ASM
> > > > > #define FCSR $r0
> > > > > +#else
> > > > > +#define FCSR $fcsr0
> > > > > #endif
> > > > >
> > > > > .global feclearexcept
> > > > >
> > > > > > > > >
> > > > > > > > > The linux kernel also has a similar distinction:
> > > > > > > > >
> > > > > > > > > commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
> > > > > > > > > Author: WANG Xuerui <git@xen0n.name>
> > > > > > > > > Date: Thu Jun 29 20:58:43 2023 +0800
> > > > > > > > >
> > > > > > > > > LoongArch: Prepare for assemblers with
> > > > > > > > > proper FCSR class support
> > > > > > > > >
> > > > > > > > > The GNU assembler (as of 2.40) mis-treats
> > > > > > > > > FCSR operands as GPRs, but
> > > > > > > > > the LLVM IAS does not. Probe for this and
> > > > > > > > > refer to FCSRs as"$fcsrNN"
> > > > > > > > > if support is present.
> > > > > > > > >
> > > > > > > > > Signed-off-by: WANG Xuerui <git@xen0n.name>
> > > > > > > > > Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
> > > > > > > > >
> > > > > > > > > > Otherwise, everything looks as expected, I
> > > > > > > > > > think. I'm okay with making
> > > > > > > > > > any fixups for merging rather than throwing
> > > > > > > > > > this back on your team for
> > > > > > > > > > more revisions, but can you please follow up and clarify the above?
> > > > > > >
> > > > > > > all issues look minor.
> > > > > > >
> > > > > > > if you post a v8 it likely gets into a release faster.
> > > > > > >
> > > >
> > >
>
> > >From 2d5f9717fda5c16f10d805ce8a26f1e78de440ea Mon Sep 17 00:00:00 2001
> > From: wanghongliang <wanghongliang@loongson.cn>
> > Date: Wed, 15 Nov 2023 01:31:51 +0800
> > Subject: [PATCH] add loongarch64 port v9.
> >
> > Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
> > Author: Meidan Li <limeidan@loongson.cn>
> > Author: Guoqi Chen <chenguoqi@loongson.cn>
> > Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
> > Author: Fan peng <fanpeng@loongson.cn>
> > Author: Jiantao Shan <shanjiantao@loongson.cn>
> > Author: Xuhui Qiang <qiangxuhui@loongson.cn>
> > Author: Jingyun Hua <huajingyun@loongson.cn>
> > Author: Liu xue <liuxue@loongson.cn>
> > Author: Hongliang Wang <wanghongliang@loongson.cn>
> >
> > Signed-off-by: wanghongliang <wanghongliang@loongson.cn>
> > ---
> > arch/loongarch64/atomic_arch.h | 53 ++++
> > arch/loongarch64/bits/alltypes.h.in | 18 ++
> > arch/loongarch64/bits/fenv.h | 20 ++
> > arch/loongarch64/bits/float.h | 16 ++
> > arch/loongarch64/bits/posix.h | 2 +
> > arch/loongarch64/bits/ptrace.h | 4 +
> > arch/loongarch64/bits/reg.h | 2 +
> > arch/loongarch64/bits/setjmp.h | 1 +
> > arch/loongarch64/bits/signal.h | 92 +++++++
> > arch/loongarch64/bits/stat.h | 18 ++
> > arch/loongarch64/bits/stdint.h | 20 ++
> > arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
> > arch/loongarch64/bits/user.h | 5 +
> > arch/loongarch64/crt_arch.h | 13 +
> > arch/loongarch64/pthread_arch.h | 11 +
> > arch/loongarch64/reloc.h | 29 ++
> > arch/loongarch64/syscall_arch.h | 137 ++++++++++
> > configure | 15 +
> > include/elf.h | 104 ++++++-
> > src/fenv/loongarch64/fenv.S | 78 ++++++
> > src/ldso/loongarch64/dlsym.s | 7 +
> > src/setjmp/loongarch64/longjmp.S | 32 +++
> > src/setjmp/loongarch64/setjmp.S | 34 +++
> > src/signal/loongarch64/restore.s | 10 +
> > src/signal/loongarch64/sigsetjmp.s | 25 ++
> > src/thread/loongarch64/__set_thread_area.s | 7 +
> > src/thread/loongarch64/__unmapself.s | 7 +
> > src/thread/loongarch64/clone.s | 28 ++
> > src/thread/loongarch64/syscall_cp.s | 29 ++
> > 29 files changed, 1119 insertions(+), 1 deletion(-)
> > create mode 100644 arch/loongarch64/atomic_arch.h
> > create mode 100644 arch/loongarch64/bits/alltypes.h.in
> > create mode 100644 arch/loongarch64/bits/fenv.h
> > create mode 100644 arch/loongarch64/bits/float.h
> > create mode 100644 arch/loongarch64/bits/posix.h
> > create mode 100644 arch/loongarch64/bits/ptrace.h
> > create mode 100644 arch/loongarch64/bits/reg.h
> > create mode 100644 arch/loongarch64/bits/setjmp.h
> > create mode 100644 arch/loongarch64/bits/signal.h
> > create mode 100644 arch/loongarch64/bits/stat.h
> > create mode 100644 arch/loongarch64/bits/stdint.h
> > create mode 100644 arch/loongarch64/bits/syscall.h.in
> > create mode 100644 arch/loongarch64/bits/user.h
> > create mode 100644 arch/loongarch64/crt_arch.h
> > create mode 100644 arch/loongarch64/pthread_arch.h
> > create mode 100644 arch/loongarch64/reloc.h
> > create mode 100644 arch/loongarch64/syscall_arch.h
> > create mode 100644 src/fenv/loongarch64/fenv.S
> > create mode 100644 src/ldso/loongarch64/dlsym.s
> > create mode 100644 src/setjmp/loongarch64/longjmp.S
> > create mode 100644 src/setjmp/loongarch64/setjmp.S
> > create mode 100644 src/signal/loongarch64/restore.s
> > create mode 100644 src/signal/loongarch64/sigsetjmp.s
> > create mode 100644 src/thread/loongarch64/__set_thread_area.s
> > create mode 100644 src/thread/loongarch64/__unmapself.s
> > create mode 100644 src/thread/loongarch64/clone.s
> > create mode 100644 src/thread/loongarch64/syscall_cp.s
> >
> > diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
> > new file mode 100644
> > index 00000000..2225d027
> > --- /dev/null
> > +++ b/arch/loongarch64/atomic_arch.h
> > @@ -0,0 +1,53 @@
> > +#define a_ll a_ll
> > +static inline int a_ll(volatile int *p)
> > +{
> > + int v;
> > + __asm__ __volatile__ (
> > + "ll.w %0, %1"
> > + : "=r"(v)
> > + : "ZC"(*p));
> > + return v;
> > +}
> > +
> > +#define a_sc a_sc
> > +static inline int a_sc(volatile int *p, int v)
> > +{
> > + int r;
> > + __asm__ __volatile__ (
> > + "sc.w %0, %1"
> > + : "=r"(r), "=ZC"(*p)
> > + : "0"(v) : "memory");
> > + return r;
> > +}
> > +
> > +#define a_ll_p a_ll_p
> > +static inline void *a_ll_p(volatile void *p)
> > +{
> > + void *v;
> > + __asm__ __volatile__ (
> > + "ll.d %0, %1"
> > + : "=r"(v)
> > + : "ZC"(*(void *volatile *)p));
> > + return v;
> > +}
> > +
> > +#define a_sc_p a_sc_p
> > +static inline int a_sc_p(volatile void *p, void *v)
> > +{
> > + long r;
> > + __asm__ __volatile__ (
> > + "sc.d %0, %1"
> > + : "=r"(r), "=ZC"(*(void *volatile *)p)
> > + : "0"(v)
> > + : "memory");
> > + return r;
> > +}
> > +
> > +#define a_barrier a_barrier
> > +static inline void a_barrier()
> > +{
> > + __asm__ __volatile__ ("dbar 0" : : : "memory");
> > +}
> > +
> > +#define a_pre_llsc a_barrier
> > +#define a_post_llsc a_barrier
> > diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
> > new file mode 100644
> > index 00000000..06db4096
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/alltypes.h.in
> > @@ -0,0 +1,18 @@
> > +#define _Addr long
> > +#define _Int64 long
> > +#define _Reg long
> > +
> > +#define __BYTE_ORDER 1234
> > +#define __LONG_MAX 0x7fffffffffffffffL
> > +
> > +#ifndef __cplusplus
> > +TYPEDEF int wchar_t;
> > +#endif
> > +
> > +TYPEDEF float float_t;
> > +TYPEDEF double double_t;
> > +
> > +TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
> > +
> > +TYPEDEF unsigned nlink_t;
> > +TYPEDEF int blksize_t;
> > diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
> > new file mode 100644
> > index 00000000..99e916e1
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/fenv.h
> > @@ -0,0 +1,20 @@
> > +#define FE_INEXACT 0x010000
> > +#define FE_UNDERFLOW 0x020000
> > +#define FE_OVERFLOW 0x040000
> > +#define FE_DIVBYZERO 0x080000
> > +#define FE_INVALID 0x100000
> > +
> > +#define FE_ALL_EXCEPT 0x1F0000
> > +
> > +#define FE_TONEAREST 0x000
> > +#define FE_TOWARDZERO 0x100
> > +#define FE_UPWARD 0x200
> > +#define FE_DOWNWARD 0x300
> > +
> > +typedef unsigned fexcept_t;
> > +
> > +typedef struct {
> > + unsigned int __cw;
> > +} fenv_t;
> > +
> > +#define FE_DFL_ENV ((const fenv_t *) -1)
> > diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
> > new file mode 100644
> > index 00000000..63e86d44
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/float.h
> > @@ -0,0 +1,16 @@
> > +#define FLT_EVAL_METHOD 0
> > +
> > +#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
> > +#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
> > +#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
> > +#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
> > +
> > +#define LDBL_MANT_DIG 113
> > +#define LDBL_MIN_EXP (-16381)
> > +#define LDBL_MAX_EXP 16384
> > +
> > +#define LDBL_DIG 33
> > +#define LDBL_MIN_10_EXP (-4931)
> > +#define LDBL_MAX_10_EXP 4932
> > +
> > +#define DECIMAL_DIG 36
> > diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
> > new file mode 100644
> > index 00000000..c37b94c1
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/posix.h
> > @@ -0,0 +1,2 @@
> > +#define _POSIX_V6_LP64_OFF64 1
> > +#define _POSIX_V7_LP64_OFF64 1
> > diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
> > new file mode 100644
> > index 00000000..dce2fa51
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/ptrace.h
> > @@ -0,0 +1,4 @@
> > +#define PTRACE_GET_THREAD_AREA 25
> > +#define PTRACE_SET_THREAD_AREA 26
> > +#define PTRACE_GET_WATCH_REGS 0xd0
> > +#define PTRACE_SET_WATCH_REGS 0xd1
> > diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
> > new file mode 100644
> > index 00000000..2633f39d
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/reg.h
> > @@ -0,0 +1,2 @@
> > +#undef __WORDSIZE
> > +#define __WORDSIZE 64
> > diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
> > new file mode 100644
> > index 00000000..4bfa374d
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/setjmp.h
> > @@ -0,0 +1 @@
> > +typedef unsigned long __jmp_buf[23];
> > diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
> > new file mode 100644
> > index 00000000..e1d256e7
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/signal.h
> > @@ -0,0 +1,92 @@
> > +#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
> > + || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> > +
> > +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> > +#define MINSIGSTKSZ 4096
> > +#define SIGSTKSZ 16384
> > +#endif
> > +
> > +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
> > +typedef unsigned long greg_t, gregset_t[32];
> > +
> > +struct sigcontext {
> > + unsigned long sc_pc;
> > + unsigned long sc_regs[32];
> > + unsigned int sc_flags;
> > + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
> > +};
> > +
> > +typedef struct {
> > + unsigned long __pc;
> > + unsigned long __gregs[32];
> > + unsigned int __flags;
> > + unsigned long __extcontext[] __attribute__((__aligned__(16)));
> > +} mcontext_t;
> > +#else
> > +typedef struct {
> > + unsigned long __space[34];
> > +} mcontext_t;
> > +#endif
> > +
> > +struct sigaltstack {
> > + void *ss_sp;
> > + int ss_flags;
> > + size_t ss_size;
> > +};
> > +
> > +typedef struct __ucontext
> > +{
> > + unsigned long __uc_flags;
> > + struct __ucontext *uc_link;
> > + stack_t uc_stack;
> > + sigset_t uc_sigmask;
> > + long __uc_pad;
> > + mcontext_t uc_mcontext;
> > +} ucontext_t;
> > +
> > +#define SA_NOCLDSTOP 1
> > +#define SA_NOCLDWAIT 2
> > +#define SA_SIGINFO 4
> > +#define SA_ONSTACK 0x08000000
> > +#define SA_RESTART 0x10000000
> > +#define SA_NODEFER 0x40000000
> > +#define SA_RESETHAND 0x80000000
> > +#define SA_RESTORER 0x0
> > +
> > +#endif
> > +
> > +#define SIGHUP 1
> > +#define SIGINT 2
> > +#define SIGQUIT 3
> > +#define SIGILL 4
> > +#define SIGTRAP 5
> > +#define SIGABRT 6
> > +#define SIGIOT SIGABRT
> > +#define SIGBUS 7
> > +#define SIGFPE 8
> > +#define SIGKILL 9
> > +#define SIGUSR1 10
> > +#define SIGSEGV 11
> > +#define SIGUSR2 12
> > +#define SIGPIPE 13
> > +#define SIGALRM 14
> > +#define SIGTERM 15
> > +#define SIGSTKFLT 16
> > +#define SIGCHLD 17
> > +#define SIGCONT 18
> > +#define SIGSTOP 19
> > +#define SIGTSTP 20
> > +#define SIGTTIN 21
> > +#define SIGTTOU 22
> > +#define SIGURG 23
> > +#define SIGXCPU 24
> > +#define SIGXFSZ 25
> > +#define SIGVTALRM 26
> > +#define SIGPROF 27
> > +#define SIGWINCH 28
> > +#define SIGIO 29
> > +#define SIGPOLL SIGIO
> > +#define SIGPWR 30
> > +#define SIGSYS 31
> > +#define SIGUNUSED SIGSYS
> > +#define _NSIG 65
> > diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
> > new file mode 100644
> > index 00000000..b7f4221b
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/stat.h
> > @@ -0,0 +1,18 @@
> > +struct stat {
> > + dev_t st_dev;
> > + ino_t st_ino;
> > + mode_t st_mode;
> > + nlink_t st_nlink;
> > + uid_t st_uid;
> > + gid_t st_gid;
> > + dev_t st_rdev;
> > + unsigned long __pad;
> > + off_t st_size;
> > + blksize_t st_blksize;
> > + int __pad2;
> > + blkcnt_t st_blocks;
> > + struct timespec st_atim;
> > + struct timespec st_mtim;
> > + struct timespec st_ctim;
> > + unsigned __unused[2];
> > +};
> > diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
> > new file mode 100644
> > index 00000000..60c12499
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/stdint.h
> > @@ -0,0 +1,20 @@
> > +typedef int32_t int_fast16_t;
> > +typedef int32_t int_fast32_t;
> > +typedef uint32_t uint_fast16_t;
> > +typedef uint32_t uint_fast32_t;
> > +
> > +#define INT_FAST16_MIN INT32_MIN
> > +#define INT_FAST32_MIN INT32_MIN
> > +
> > +#define INT_FAST16_MAX INT32_MAX
> > +#define INT_FAST32_MAX INT32_MAX
> > +
> > +#define UINT_FAST16_MAX UINT32_MAX
> > +#define UINT_FAST32_MAX UINT32_MAX
> > +
> > +#define INTPTR_MIN INT64_MIN
> > +#define INTPTR_MAX INT64_MAX
> > +#define UINTPTR_MAX UINT64_MAX
> > +#define PTRDIFF_MIN INT64_MIN
> > +#define PTRDIFF_MAX INT64_MAX
> > +#define SIZE_MAX UINT64_MAX
> > diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
> > new file mode 100644
> > index 00000000..0980e533
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/syscall.h.in
> > @@ -0,0 +1,303 @@
> > +#define __NR_io_setup 0
> > +#define __NR_io_destroy 1
> > +#define __NR_io_submit 2
> > +#define __NR_io_cancel 3
> > +#define __NR_io_getevents 4
> > +#define __NR_setxattr 5
> > +#define __NR_lsetxattr 6
> > +#define __NR_fsetxattr 7
> > +#define __NR_getxattr 8
> > +#define __NR_lgetxattr 9
> > +#define __NR_fgetxattr 10
> > +#define __NR_listxattr 11
> > +#define __NR_llistxattr 12
> > +#define __NR_flistxattr 13
> > +#define __NR_removexattr 14
> > +#define __NR_lremovexattr 15
> > +#define __NR_fremovexattr 16
> > +#define __NR_getcwd 17
> > +#define __NR_lookup_dcookie 18
> > +#define __NR_eventfd2 19
> > +#define __NR_epoll_create1 20
> > +#define __NR_epoll_ctl 21
> > +#define __NR_epoll_pwait 22
> > +#define __NR_dup 23
> > +#define __NR_dup3 24
> > +#define __NR3264_fcntl 25
> > +#define __NR_inotify_init1 26
> > +#define __NR_inotify_add_watch 27
> > +#define __NR_inotify_rm_watch 28
> > +#define __NR_ioctl 29
> > +#define __NR_ioprio_set 30
> > +#define __NR_ioprio_get 31
> > +#define __NR_flock 32
> > +#define __NR_mknodat 33
> > +#define __NR_mkdirat 34
> > +#define __NR_unlinkat 35
> > +#define __NR_symlinkat 36
> > +#define __NR_linkat 37
> > +#define __NR_umount2 39
> > +#define __NR_mount 40
> > +#define __NR_pivot_root 41
> > +#define __NR_nfsservctl 42
> > +#define __NR3264_statfs 43
> > +#define __NR3264_fstatfs 44
> > +#define __NR3264_truncate 45
> > +#define __NR3264_ftruncate 46
> > +#define __NR_fallocate 47
> > +#define __NR_faccessat 48
> > +#define __NR_chdir 49
> > +#define __NR_fchdir 50
> > +#define __NR_chroot 51
> > +#define __NR_fchmod 52
> > +#define __NR_fchmodat 53
> > +#define __NR_fchownat 54
> > +#define __NR_fchown 55
> > +#define __NR_openat 56
> > +#define __NR_close 57
> > +#define __NR_vhangup 58
> > +#define __NR_pipe2 59
> > +#define __NR_quotactl 60
> > +#define __NR_getdents64 61
> > +#define __NR3264_lseek 62
> > +#define __NR_read 63
> > +#define __NR_write 64
> > +#define __NR_readv 65
> > +#define __NR_writev 66
> > +#define __NR_pread64 67
> > +#define __NR_pwrite64 68
> > +#define __NR_preadv 69
> > +#define __NR_pwritev 70
> > +#define __NR3264_sendfile 71
> > +#define __NR_pselect6 72
> > +#define __NR_ppoll 73
> > +#define __NR_signalfd4 74
> > +#define __NR_vmsplice 75
> > +#define __NR_splice 76
> > +#define __NR_tee 77
> > +#define __NR_readlinkat 78
> > +#define __NR_sync 81
> > +#define __NR_fsync 82
> > +#define __NR_fdatasync 83
> > +#define __NR_sync_file_range 84
> > +#define __NR_timerfd_create 85
> > +#define __NR_timerfd_settime 86
> > +#define __NR_timerfd_gettime 87
> > +#define __NR_utimensat 88
> > +#define __NR_acct 89
> > +#define __NR_capget 90
> > +#define __NR_capset 91
> > +#define __NR_personality 92
> > +#define __NR_exit 93
> > +#define __NR_exit_group 94
> > +#define __NR_waitid 95
> > +#define __NR_set_tid_address 96
> > +#define __NR_unshare 97
> > +#define __NR_futex 98
> > +#define __NR_set_robust_list 99
> > +#define __NR_get_robust_list 100
> > +#define __NR_nanosleep 101
> > +#define __NR_getitimer 102
> > +#define __NR_setitimer 103
> > +#define __NR_kexec_load 104
> > +#define __NR_init_module 105
> > +#define __NR_delete_module 106
> > +#define __NR_timer_create 107
> > +#define __NR_timer_gettime 108
> > +#define __NR_timer_getoverrun 109
> > +#define __NR_timer_settime 110
> > +#define __NR_timer_delete 111
> > +#define __NR_clock_settime 112
> > +#define __NR_clock_gettime 113
> > +#define __NR_clock_getres 114
> > +#define __NR_clock_nanosleep 115
> > +#define __NR_syslog 116
> > +#define __NR_ptrace 117
> > +#define __NR_sched_setparam 118
> > +#define __NR_sched_setscheduler 119
> > +#define __NR_sched_getscheduler 120
> > +#define __NR_sched_getparam 121
> > +#define __NR_sched_setaffinity 122
> > +#define __NR_sched_getaffinity 123
> > +#define __NR_sched_yield 124
> > +#define __NR_sched_get_priority_max 125
> > +#define __NR_sched_get_priority_min 126
> > +#define __NR_sched_rr_get_interval 127
> > +#define __NR_restart_syscall 128
> > +#define __NR_kill 129
> > +#define __NR_tkill 130
> > +#define __NR_tgkill 131
> > +#define __NR_sigaltstack 132
> > +#define __NR_rt_sigsuspend 133
> > +#define __NR_rt_sigaction 134
> > +#define __NR_rt_sigprocmask 135
> > +#define __NR_rt_sigpending 136
> > +#define __NR_rt_sigtimedwait 137
> > +#define __NR_rt_sigqueueinfo 138
> > +#define __NR_rt_sigreturn 139
> > +#define __NR_setpriority 140
> > +#define __NR_getpriority 141
> > +#define __NR_reboot 142
> > +#define __NR_setregid 143
> > +#define __NR_setgid 144
> > +#define __NR_setreuid 145
> > +#define __NR_setuid 146
> > +#define __NR_setresuid 147
> > +#define __NR_getresuid 148
> > +#define __NR_setresgid 149
> > +#define __NR_getresgid 150
> > +#define __NR_setfsuid 151
> > +#define __NR_setfsgid 152
> > +#define __NR_times 153
> > +#define __NR_setpgid 154
> > +#define __NR_getpgid 155
> > +#define __NR_getsid 156
> > +#define __NR_setsid 157
> > +#define __NR_getgroups 158
> > +#define __NR_setgroups 159
> > +#define __NR_uname 160
> > +#define __NR_sethostname 161
> > +#define __NR_setdomainname 162
> > +#define __NR_getrlimit 163
> > +#define __NR_setrlimit 164
> > +#define __NR_getrusage 165
> > +#define __NR_umask 166
> > +#define __NR_prctl 167
> > +#define __NR_getcpu 168
> > +#define __NR_gettimeofday 169
> > +#define __NR_settimeofday 170
> > +#define __NR_adjtimex 171
> > +#define __NR_getpid 172
> > +#define __NR_getppid 173
> > +#define __NR_getuid 174
> > +#define __NR_geteuid 175
> > +#define __NR_getgid 176
> > +#define __NR_getegid 177
> > +#define __NR_gettid 178
> > +#define __NR_sysinfo 179
> > +#define __NR_mq_open 180
> > +#define __NR_mq_unlink 181
> > +#define __NR_mq_timedsend 182
> > +#define __NR_mq_timedreceive 183
> > +#define __NR_mq_notify 184
> > +#define __NR_mq_getsetattr 185
> > +#define __NR_msgget 186
> > +#define __NR_msgctl 187
> > +#define __NR_msgrcv 188
> > +#define __NR_msgsnd 189
> > +#define __NR_semget 190
> > +#define __NR_semctl 191
> > +#define __NR_semtimedop 192
> > +#define __NR_semop 193
> > +#define __NR_shmget 194
> > +#define __NR_shmctl 195
> > +#define __NR_shmat 196
> > +#define __NR_shmdt 197
> > +#define __NR_socket 198
> > +#define __NR_socketpair 199
> > +#define __NR_bind 200
> > +#define __NR_listen 201
> > +#define __NR_accept 202
> > +#define __NR_connect 203
> > +#define __NR_getsockname 204
> > +#define __NR_getpeername 205
> > +#define __NR_sendto 206
> > +#define __NR_recvfrom 207
> > +#define __NR_setsockopt 208
> > +#define __NR_getsockopt 209
> > +#define __NR_shutdown 210
> > +#define __NR_sendmsg 211
> > +#define __NR_recvmsg 212
> > +#define __NR_readahead 213
> > +#define __NR_brk 214
> > +#define __NR_munmap 215
> > +#define __NR_mremap 216
> > +#define __NR_add_key 217
> > +#define __NR_request_key 218
> > +#define __NR_keyctl 219
> > +#define __NR_clone 220
> > +#define __NR_execve 221
> > +#define __NR3264_mmap 222
> > +#define __NR3264_fadvise64 223
> > +#define __NR_swapon 224
> > +#define __NR_swapoff 225
> > +#define __NR_mprotect 226
> > +#define __NR_msync 227
> > +#define __NR_mlock 228
> > +#define __NR_munlock 229
> > +#define __NR_mlockall 230
> > +#define __NR_munlockall 231
> > +#define __NR_mincore 232
> > +#define __NR_madvise 233
> > +#define __NR_remap_file_pages 234
> > +#define __NR_mbind 235
> > +#define __NR_get_mempolicy 236
> > +#define __NR_set_mempolicy 237
> > +#define __NR_migrate_pages 238
> > +#define __NR_move_pages 239
> > +#define __NR_rt_tgsigqueueinfo 240
> > +#define __NR_perf_event_open 241
> > +#define __NR_accept4 242
> > +#define __NR_recvmmsg 243
> > +#define __NR_arch_specific_syscall 244
> > +#define __NR_wait4 260
> > +#define __NR_prlimit64 261
> > +#define __NR_fanotify_init 262
> > +#define __NR_fanotify_mark 263
> > +#define __NR_name_to_handle_at 264
> > +#define __NR_open_by_handle_at 265
> > +#define __NR_clock_adjtime 266
> > +#define __NR_syncfs 267
> > +#define __NR_setns 268
> > +#define __NR_sendmmsg 269
> > +#define __NR_process_vm_readv 270
> > +#define __NR_process_vm_writev 271
> > +#define __NR_kcmp 272
> > +#define __NR_finit_module 273
> > +#define __NR_sched_setattr 274
> > +#define __NR_sched_getattr 275
> > +#define __NR_renameat2 276
> > +#define __NR_seccomp 277
> > +#define __NR_getrandom 278
> > +#define __NR_memfd_create 279
> > +#define __NR_bpf 280
> > +#define __NR_execveat 281
> > +#define __NR_userfaultfd 282
> > +#define __NR_membarrier 283
> > +#define __NR_mlock2 284
> > +#define __NR_copy_file_range 285
> > +#define __NR_preadv2 286
> > +#define __NR_pwritev2 287
> > +#define __NR_pkey_mprotect 288
> > +#define __NR_pkey_alloc 289
> > +#define __NR_pkey_free 290
> > +#define __NR_statx 291
> > +#define __NR_io_pgetevents 292
> > +#define __NR_rseq 293
> > +#define __NR_kexec_file_load 294
> > +#define __NR_pidfd_send_signal 424
> > +#define __NR_io_uring_setup 425
> > +#define __NR_io_uring_enter 426
> > +#define __NR_io_uring_register 427
> > +#define __NR_open_tree 428
> > +#define __NR_move_mount 429
> > +#define __NR_fsopen 430
> > +#define __NR_fsconfig 431
> > +#define __NR_fsmount 432
> > +#define __NR_fspick 433
> > +#define __NR_pidfd_open 434
> > +#define __NR_clone3 435
> > +#define __NR_close_range 436
> > +#define __NR_openat2 437
> > +#define __NR_pidfd_getfd 438
> > +#define __NR_faccessat2 439
> > +#define __NR_process_madvise 440
> > +#define __NR_fcntl __NR3264_fcntl
> > +#define __NR_statfs __NR3264_statfs
> > +#define __NR_fstatfs __NR3264_fstatfs
> > +#define __NR_truncate __NR3264_truncate
> > +#define __NR_ftruncate __NR3264_ftruncate
> > +#define __NR_lseek __NR3264_lseek
> > +#define __NR_sendfile __NR3264_sendfile
> > +#define __NR_mmap __NR3264_mmap
> > +#define __NR_fadvise64 __NR3264_fadvise64
> > diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
> > new file mode 100644
> > index 00000000..5a71d132
> > --- /dev/null
> > +++ b/arch/loongarch64/bits/user.h
> > @@ -0,0 +1,5 @@
> > +#define ELF_NGREG 45
> > +#define ELF_NFPREG 33
> > +
> > +typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
> > +typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
> > diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
> > new file mode 100644
> > index 00000000..e0760d9e
> > --- /dev/null
> > +++ b/arch/loongarch64/crt_arch.h
> > @@ -0,0 +1,13 @@
> > +__asm__(
> > +".text \n"
> > +".global " START "\n"
> > +".type " START ", @function\n"
> > +START ":\n"
> > +" move $fp, $zero\n"
> > +" move $a0, $sp\n"
> > +".weak _DYNAMIC\n"
> > +".hidden _DYNAMIC\n"
> > +" la.local $a1, _DYNAMIC\n"
> > +" bstrins.d $sp, $zero, 3, 0\n"
> > +" b " START "_c\n"
> > +);
> > diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
> > new file mode 100644
> > index 00000000..28fbfcd1
> > --- /dev/null
> > +++ b/arch/loongarch64/pthread_arch.h
> > @@ -0,0 +1,11 @@
> > +static inline uintptr_t __get_tp()
> > +{
> > + uintptr_t tp;
> > + __asm__ __volatile__("move %0, $tp" : "=r"(tp));
> > + return tp;
> > +}
> > +
> > +#define TLS_ABOVE_TP
> > +#define GAP_ABOVE_TP 0
> > +#define DTP_OFFSET 0
> > +#define MC_PC __pc
> > diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
> > new file mode 100644
> > index 00000000..6907de8e
> > --- /dev/null
> > +++ b/arch/loongarch64/reloc.h
> > @@ -0,0 +1,29 @@
> > +#if defined __loongarch_double_float
> > +#define FP_SUFFIX "-lp64d"
> > +#elif defined __loongarch_single_float
> > +#define FP_SUFFIX "-lp64f"
> > +#elif defined __loongarch_soft_float
> > +#define FP_SUFFIX "-lp64s"
> > +#endif
> > +
> > +#define LDSO_ARCH "loongarch64" FP_SUFFIX
> > +
> > +#define TPOFF_K 0
> > +
> > +#define REL_PLT R_LARCH_JUMP_SLOT
> > +#define REL_COPY R_LARCH_COPY
> > +#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
> > +#define REL_DTPOFF R_LARCH_TLS_DTPREL64
> > +#define REL_TPOFF R_LARCH_TLS_TPREL64
> > +#define REL_RELATIVE R_LARCH_RELATIVE
> > +#define REL_SYMBOLIC R_LARCH_64
> > +
> > +#define CRTJMP(pc,sp) __asm__ __volatile__( \
> > + "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
> > +
> > +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
> > + ".hidden " #sym "\n" \
> > + ".align 8 \n" \
> > + " la.local $t1, "#sym" \n" \
> > + " move %0, $t1 \n" \
> > + : "=r"(*(fp)) : : "memory" )
> > diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
> > new file mode 100644
> > index 00000000..4d5e1885
> > --- /dev/null
> > +++ b/arch/loongarch64/syscall_arch.h
> > @@ -0,0 +1,137 @@
> > +#define __SYSCALL_LL_E(x) (x)
> > +#define __SYSCALL_LL_O(x) (x)
> > +
> > +#define SYSCALL_CLOBBERLIST \
> > + "$t0", "$t1", "$t2", "$t3", \
> > + "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
> > +
> > +static inline long __syscall0(long n)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0");
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "=r"(a0)
> > + : "r"(a7)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall1(long n, long a)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall2(long n, long a, long b)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > + register long a1 __asm__("$a1") = b;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7), "r"(a1)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall3(long n, long a, long b, long c)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > + register long a1 __asm__("$a1") = b;
> > + register long a2 __asm__("$a2") = c;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7), "r"(a1), "r"(a2)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall4(long n, long a, long b, long c, long d)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > + register long a1 __asm__("$a1") = b;
> > + register long a2 __asm__("$a2") = c;
> > + register long a3 __asm__("$a3") = d;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall5(long n, long a, long b, long c, long d, long e)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > + register long a1 __asm__("$a1") = b;
> > + register long a2 __asm__("$a2") = c;
> > + register long a3 __asm__("$a3") = d;
> > + register long a4 __asm__("$a4") = e;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > + register long a1 __asm__("$a1") = b;
> > + register long a2 __asm__("$a2") = c;
> > + register long a3 __asm__("$a3") = d;
> > + register long a4 __asm__("$a4") = e;
> > + register long a5 __asm__("$a5") = f;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
> > +{
> > + register long a7 __asm__("$a7") = n;
> > + register long a0 __asm__("$a0") = a;
> > + register long a1 __asm__("$a1") = b;
> > + register long a2 __asm__("$a2") = c;
> > + register long a3 __asm__("$a3") = d;
> > + register long a4 __asm__("$a4") = e;
> > + register long a5 __asm__("$a5") = f;
> > + register long a6 __asm__("$a6") = g;
> > +
> > + __asm__ __volatile__ (
> > + "syscall 0"
> > + : "+r"(a0)
> > + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
> > + : SYSCALL_CLOBBERLIST);
> > + return a0;
> > +}
> > +
> > +#define VDSO_USEFUL
> > +#define VDSO_CGT_SYM "__vdso_clock_gettime"
> > +#define VDSO_CGT_VER "LINUX_5.10"
> > +
> > +#define IPC_64 0
> > diff --git a/configure b/configure
> > index 0b966ede..93b06287 100755
> > --- a/configure
> > +++ b/configure
> > @@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
> > x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
> > x86_64-nt64*) ARCH=nt64 ;;
> > x86_64*) ARCH=x86_64 ;;
> > +loongarch64*) ARCH=loongarch64 ;;
> > m68k*) ARCH=m68k ;;
> > mips64*|mipsisa64*) ARCH=mips64 ;;
> > mips*) ARCH=mips ;;
> > @@ -671,6 +672,20 @@ if test "$ARCH" = "aarch64" ; then
> > trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
> > fi
> >
> > +if test "$ARCH" = "loongarch64" ; then
> > +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
> > +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
> > +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
> > +printf "checking whether compiler support FCSRs... "
> > +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> > +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> > +printf "yes\n"
> > +else
> > +printf "no\n"
> > +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
> > +fi
> > +fi
> > +
> > if test "$ARCH" = "m68k" ; then
> > if trycppif "__HAVE_68881__" ; then : ;
> > elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
> > diff --git a/include/elf.h b/include/elf.h
> > index 23f2c4bc..7114f262 100644
> > --- a/include/elf.h
> > +++ b/include/elf.h
> > @@ -315,7 +315,8 @@ typedef struct {
> > #define EM_RISCV 243
> > #define EM_BPF 247
> > #define EM_CSKY 252
> > -#define EM_NUM 253
> > +#define EM_LOONGARCH 258
> > +#define EM_NUM 259
> >
> > #define EM_ALPHA 0x9026
> >
> > @@ -699,6 +700,11 @@ typedef struct {
> > #define NT_MIPS_FP_MODE 0x801
> > #define NT_MIPS_MSA 0x802
> > #define NT_VERSION 1
> > +#define NT_LOONGARCH_CPUCFG 0xa00
> > +#define NT_LOONGARCH_CSR 0xa01
> > +#define NT_LOONGARCH_LSX 0xa02
> > +#define NT_LOONGARCH_LASX 0xa03
> > +#define NT_LOONGARCH_LBT 0xa04
> >
> >
> >
> > @@ -3293,6 +3299,102 @@ enum
> > #define R_RISCV_SET32 56
> > #define R_RISCV_32_PCREL 57
> >
> > +#define EF_LARCH_ABI_MODIFIER_MASK 0x07
> > +#define EF_LARCH_ABI_SOFT_FLOAT 0x01
> > +#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
> > +#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
> > +#define EF_LARCH_OBJABI_V1 0x40
> > +
> > +#define R_LARCH_NONE 0
> > +#define R_LARCH_32 1
> > +#define R_LARCH_64 2
> > +#define R_LARCH_RELATIVE 3
> > +#define R_LARCH_COPY 4
> > +#define R_LARCH_JUMP_SLOT 5
> > +#define R_LARCH_TLS_DTPMOD32 6
> > +#define R_LARCH_TLS_DTPMOD64 7
> > +#define R_LARCH_TLS_DTPREL32 8
> > +#define R_LARCH_TLS_DTPREL64 9
> > +#define R_LARCH_TLS_TPREL32 10
> > +#define R_LARCH_TLS_TPREL64 11
> > +#define R_LARCH_IRELATIVE 12
> > +#define R_LARCH_MARK_LA 20
> > +#define R_LARCH_MARK_PCREL 21
> > +#define R_LARCH_SOP_PUSH_PCREL 22
> > +#define R_LARCH_SOP_PUSH_ABSOLUTE 23
> > +#define R_LARCH_SOP_PUSH_DUP 24
> > +#define R_LARCH_SOP_PUSH_GPREL 25
> > +#define R_LARCH_SOP_PUSH_TLS_TPREL 26
> > +#define R_LARCH_SOP_PUSH_TLS_GOT 27
> > +#define R_LARCH_SOP_PUSH_TLS_GD 28
> > +#define R_LARCH_SOP_PUSH_PLT_PCREL 29
> > +#define R_LARCH_SOP_ASSERT 30
> > +#define R_LARCH_SOP_NOT 31
> > +#define R_LARCH_SOP_SUB 32
> > +#define R_LARCH_SOP_SL 33
> > +#define R_LARCH_SOP_SR 34
> > +#define R_LARCH_SOP_ADD 35
> > +#define R_LARCH_SOP_AND 36
> > +#define R_LARCH_SOP_IF_ELSE 37
> > +#define R_LARCH_SOP_POP_32_S_10_5 38
> > +#define R_LARCH_SOP_POP_32_U_10_12 39
> > +#define R_LARCH_SOP_POP_32_S_10_12 40
> > +#define R_LARCH_SOP_POP_32_S_10_16 41
> > +#define R_LARCH_SOP_POP_32_S_10_16_S2 42
> > +#define R_LARCH_SOP_POP_32_S_5_20 43
> > +#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
> > +#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
> > +#define R_LARCH_SOP_POP_32_U 46
> > +#define R_LARCH_ADD8 47
> > +#define R_LARCH_ADD16 48
> > +#define R_LARCH_ADD24 49
> > +#define R_LARCH_ADD32 50
> > +#define R_LARCH_ADD64 51
> > +#define R_LARCH_SUB8 52
> > +#define R_LARCH_SUB16 53
> > +#define R_LARCH_SUB24 54
> > +#define R_LARCH_SUB32 55
> > +#define R_LARCH_SUB64 56
> > +#define R_LARCH_GNU_VTINHERIT 57
> > +#define R_LARCH_GNU_VTENTRY 58
> > +#define R_LARCH_B16 64
> > +#define R_LARCH_B21 65
> > +#define R_LARCH_B26 66
> > +#define R_LARCH_ABS_HI20 67
> > +#define R_LARCH_ABS_LO12 68
> > +#define R_LARCH_ABS64_LO20 69
> > +#define R_LARCH_ABS64_HI12 70
> > +#define R_LARCH_PCALA_HI20 71
> > +#define R_LARCH_PCALA_LO12 72
> > +#define R_LARCH_PCALA64_LO20 73
> > +#define R_LARCH_PCALA64_HI12 74
> > +#define R_LARCH_GOT_PC_HI20 75
> > +#define R_LARCH_GOT_PC_LO12 76
> > +#define R_LARCH_GOT64_PC_LO20 77
> > +#define R_LARCH_GOT64_PC_HI12 78
> > +#define R_LARCH_GOT_HI20 79
> > +#define R_LARCH_GOT_LO12 80
> > +#define R_LARCH_GOT64_LO20 81
> > +#define R_LARCH_GOT64_HI12 82
> > +#define R_LARCH_TLS_LE_HI20 83
> > +#define R_LARCH_TLS_LE_LO12 84
> > +#define R_LARCH_TLS_LE64_LO20 85
> > +#define R_LARCH_TLS_LE64_HI12 86
> > +#define R_LARCH_TLS_IE_PC_HI20 87
> > +#define R_LARCH_TLS_IE_PC_LO12 88
> > +#define R_LARCH_TLS_IE64_PC_LO20 89
> > +#define R_LARCH_TLS_IE64_PC_HI12 90
> > +#define R_LARCH_TLS_IE_HI20 91
> > +#define R_LARCH_TLS_IE_LO12 92
> > +#define R_LARCH_TLS_IE64_LO20 93
> > +#define R_LARCH_TLS_IE64_HI12 94
> > +#define R_LARCH_TLS_LD_PC_HI20 95
> > +#define R_LARCH_TLS_LD_HI20 96
> > +#define R_LARCH_TLS_GD_PC_HI20 97
> > +#define R_LARCH_TLS_GD_HI20 98
> > +#define R_LARCH_32_PCREL 99
> > +#define R_LARCH_RELAX 100
> > +
> > #ifdef __cplusplus
> > }
> > #endif
> > diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
> > new file mode 100644
> > index 00000000..54064e01
> > --- /dev/null
> > +++ b/src/fenv/loongarch64/fenv.S
> > @@ -0,0 +1,78 @@
> > +#ifndef __loongarch_soft_float
> > +
> > +#ifdef BROKEN_LOONGARCH_FCSR_ASM
> > +#define FCSR $r0
> > +#else
> > +#define FCSR $fcsr0
> > +#endif
> > +
> > +.global feclearexcept
> > +.type feclearexcept,@function
> > +feclearexcept:
> > + li.w $t0, 0x1f0000
> > + and $a0, $a0, $t0
> > + movfcsr2gr $t1, FCSR
> > + andn $t1, $t1, $a0
> > + movgr2fcsr FCSR, $t1
> > + li.w $a0, 0
> > + jr $ra
> > +
> > +.global feraiseexcept
> > +.type feraiseexcept,@function
> > +feraiseexcept:
> > + li.w $t0, 0x1f0000
> > + and $a0, $a0, $t0
> > + movfcsr2gr $t1, FCSR
> > + or $t1, $t1, $a0
> > + movgr2fcsr FCSR, $t1
> > + li.w $a0, 0
> > + jr $ra
> > +
> > +.global fetestexcept
> > +.type fetestexcept,@function
> > +fetestexcept:
> > + li.w $t0, 0x1f0000
> > + and $a0, $a0, $t0
> > + movfcsr2gr $t1, FCSR
> > + and $a0, $t1, $a0
> > + jr $ra
> > +
> > +.global fegetround
> > +.type fegetround,@function
> > +fegetround:
> > + movfcsr2gr $t0, FCSR
> > + andi $a0, $t0, 0x300
> > + jr $ra
> > +
> > +.global __fesetround
> > +.hidden __fesetround
> > +.type __fesetround,@function
> > +__fesetround:
> > + li.w $t0, 0x300
> > + and $a0, $a0, $t0
> > + movfcsr2gr $t1, FCSR
> > + andn $t1, $t1, $t0
> > + or $t1, $t1, $a0
> > + movgr2fcsr FCSR, $t1
> > + li.w $a0, 0
> > + jr $ra
> > +
> > +.global fegetenv
> > +.type fegetenv,@function
> > +fegetenv:
> > + movfcsr2gr $t0, FCSR
> > + st.w $t0, $a0, 0
> > + li.w $a0, 0
> > + jr $ra
> > +
> > +.global fesetenv
> > +.type fesetenv,@function
> > +fesetenv:
> > + addi.d $t0, $a0, 1
> > + beq $t0, $r0, 1f
> > + ld.w $t0, $a0, 0
> > +1: movgr2fcsr FCSR, $t0
> > + li.w $a0, 0
> > + jr $ra
> > +
> > +#endif
> > diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
> > new file mode 100644
> > index 00000000..26fabcdb
> > --- /dev/null
> > +++ b/src/ldso/loongarch64/dlsym.s
> > @@ -0,0 +1,7 @@
> > +.global dlsym
> > +.hidden __dlsym
> > +.type dlsym,@function
> > +dlsym:
> > + move $a2, $ra
> > + la.global $t0, __dlsym
> > + jr $t0
> > diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
> > new file mode 100644
> > index 00000000..896d2e26
> > --- /dev/null
> > +++ b/src/setjmp/loongarch64/longjmp.S
> > @@ -0,0 +1,32 @@
> > +.global _longjmp
> > +.global longjmp
> > +.type _longjmp,@function
> > +.type longjmp,@function
> > +_longjmp:
> > +longjmp:
> > + ld.d $ra, $a0, 0
> > + ld.d $sp, $a0, 8
> > + ld.d $r21,$a0, 16
> > + ld.d $fp, $a0, 24
> > + ld.d $s0, $a0, 32
> > + ld.d $s1, $a0, 40
> > + ld.d $s2, $a0, 48
> > + ld.d $s3, $a0, 56
> > + ld.d $s4, $a0, 64
> > + ld.d $s5, $a0, 72
> > + ld.d $s6, $a0, 80
> > + ld.d $s7, $a0, 88
> > + ld.d $s8, $a0, 96
> > +#ifndef __loongarch_soft_float
> > + fld.d $fs0, $a0, 104
> > + fld.d $fs1, $a0, 112
> > + fld.d $fs2, $a0, 120
> > + fld.d $fs3, $a0, 128
> > + fld.d $fs4, $a0, 136
> > + fld.d $fs5, $a0, 144
> > + fld.d $fs6, $a0, 152
> > + fld.d $fs7, $a0, 160
> > +#endif
> > + sltui $a0, $a1, 1
> > + add.d $a0, $a0, $a1
> > + jr $ra
> > diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
> > new file mode 100644
> > index 00000000..d158a3d2
> > --- /dev/null
> > +++ b/src/setjmp/loongarch64/setjmp.S
> > @@ -0,0 +1,34 @@
> > +.global __setjmp
> > +.global _setjmp
> > +.global setjmp
> > +.type __setjmp,@function
> > +.type _setjmp,@function
> > +.type setjmp,@function
> > +__setjmp:
> > +_setjmp:
> > +setjmp:
> > + st.d $ra, $a0, 0
> > + st.d $sp, $a0, 8
> > + st.d $r21,$a0, 16
> > + st.d $fp, $a0, 24
> > + st.d $s0, $a0, 32
> > + st.d $s1, $a0, 40
> > + st.d $s2, $a0, 48
> > + st.d $s3, $a0, 56
> > + st.d $s4, $a0, 64
> > + st.d $s5, $a0, 72
> > + st.d $s6, $a0, 80
> > + st.d $s7, $a0, 88
> > + st.d $s8, $a0, 96
> > +#ifndef __loongarch_soft_float
> > + fst.d $fs0, $a0, 104
> > + fst.d $fs1, $a0, 112
> > + fst.d $fs2, $a0, 120
> > + fst.d $fs3, $a0, 128
> > + fst.d $fs4, $a0, 136
> > + fst.d $fs5, $a0, 144
> > + fst.d $fs6, $a0, 152
> > + fst.d $fs7, $a0, 160
> > +#endif
> > + move $a0, $zero
> > + jr $ra
> > diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
> > new file mode 100644
> > index 00000000..f8e6daeb
> > --- /dev/null
> > +++ b/src/signal/loongarch64/restore.s
> > @@ -0,0 +1,10 @@
> > +.global __restore_rt
> > +.global __restore
> > +.hidden __restore_rt
> > +.hidden __restore
> > +.type __restore_rt,@function
> > +.type __restore,@function
> > +__restore_rt:
> > +__restore:
> > + li.w $a7, 139
> > + syscall 0
> > diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
> > new file mode 100644
> > index 00000000..992ab1a4
> > --- /dev/null
> > +++ b/src/signal/loongarch64/sigsetjmp.s
> > @@ -0,0 +1,25 @@
> > +.global sigsetjmp
> > +.global __sigsetjmp
> > +.type sigsetjmp,@function
> > +.type __sigsetjmp,@function
> > +sigsetjmp:
> > +__sigsetjmp:
> > + beq $a1, $zero, 1f
> > + st.d $ra, $a0, 168
> > + st.d $s0, $a0, 176
> > + move $s0, $a0
> > +
> > + la.global $t0, setjmp
> > + jirl $ra, $t0, 0
> > +
> > + move $a1, $a0 # Return from 'setjmp' or 'longjmp'
> > + move $a0, $s0
> > + ld.d $ra, $a0, 168
> > + ld.d $s0, $a0, 176
> > +
> > +.hidden __sigsetjmp_tail
> > + la.global $t0, __sigsetjmp_tail
> > + jr $t0
> > +1:
> > + la.global $t0, setjmp
> > + jr $t0
> > diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
> > new file mode 100644
> > index 00000000..ffdd52f1
> > --- /dev/null
> > +++ b/src/thread/loongarch64/__set_thread_area.s
> > @@ -0,0 +1,7 @@
> > +.global __set_thread_area
> > +.hidden __set_thread_area
> > +.type __set_thread_area,@function
> > +__set_thread_area:
> > + move $tp, $a0
> > + move $a0, $zero
> > + jr $ra
> > diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
> > new file mode 100644
> > index 00000000..1de334af
> > --- /dev/null
> > +++ b/src/thread/loongarch64/__unmapself.s
> > @@ -0,0 +1,7 @@
> > +.global __unmapself
> > +.type __unmapself, @function
> > +__unmapself:
> > + li.d $a7, 215 # call munmap
> > + syscall 0
> > + li.d $a7, 93 # call exit
> > + syscall 0
> > diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
> > new file mode 100644
> > index 00000000..db9015e6
> > --- /dev/null
> > +++ b/src/thread/loongarch64/clone.s
> > @@ -0,0 +1,28 @@
> > +#__clone(func, stack, flags, arg, ptid, tls, ctid)
> > +# a0, a1, a2, a3, a4, a5, a6
> > +# sys_clone(flags, stack, ptid, ctid, tls)
> > +# a0, a1, a2, a3, a4
> > +
> > +.global __clone
> > +.hidden __clone
> > +.type __clone,@function
> > +__clone:
> > + # Save function pointer and argument pointer on new thread stack
> > + addi.d $a1, $a1, -16
> > + st.d $a0, $a1, 0 # save function pointer
> > + st.d $a3, $a1, 8 # save argument pointer
> > + or $a0, $a2, $zero
> > + or $a2, $a4, $zero
> > + or $a3, $a6, $zero
> > + or $a4, $a5, $zero
> > + ori $a7, $zero, 220
> > + syscall 0 # call clone
> > +
> > + beqz $a0, 1f # whether child process
> > + jirl $zero, $ra, 0 # parent process return
> > +1:
> > + ld.d $t8, $sp, 0 # function pointer
> > + ld.d $a0, $sp, 8 # argument pointer
> > + jirl $ra, $t8, 0 # call the user's function
> > + ori $a7, $zero, 93
> > + syscall 0 # child process exit
> > diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
> > new file mode 100644
> > index 00000000..0fbc7a47
> > --- /dev/null
> > +++ b/src/thread/loongarch64/syscall_cp.s
> > @@ -0,0 +1,29 @@
> > +.global __cp_begin
> > +.hidden __cp_begin
> > +.global __cp_end
> > +.hidden __cp_end
> > +.global __cp_cancel
> > +.hidden __cp_cancel
> > +.hidden __cancel
> > +.global __syscall_cp_asm
> > +.hidden __syscall_cp_asm
> > +.type __syscall_cp_asm,@function
> > +
> > +__syscall_cp_asm:
> > +__cp_begin:
> > + ld.w $a0, $a0, 0
> > + bnez $a0, __cp_cancel
> > + move $t8, $a1 # reserve system call number
> > + move $a0, $a2
> > + move $a1, $a3
> > + move $a2, $a4
> > + move $a3, $a5
> > + move $a4, $a6
> > + move $a5, $a7
> > + move $a7, $t8
> > + syscall 0
> > +__cp_end:
> > + jr $ra
> > +__cp_cancel:
> > + la.local $t8, __cancel
> > + jr $t8
> > --
> > 2.37.1
> >
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-16 17:18 ` Szabolcs Nagy
@ 2023-11-17 7:19 ` Hongliang Wang
0 siblings, 0 replies; 35+ messages in thread
From: Hongliang Wang @ 2023-11-17 7:19 UTC (permalink / raw)
To: Szabolcs Nagy, musl
在 2023/11/17 上午1:18, Szabolcs Nagy 写道:
> * Szabolcs Nagy <nsz@port70.net> [2023-11-16 17:44:20 +0100]:
>
>> * Hongliang Wang <wanghongliang@loongson.cn> [2023-11-16 10:54:44 +0800]:
>>> Thank you for your suggestion, I have modified the dynamic linker
>>> name according to the basic ABI types are specified in the ABI
>>> document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
>>> as shown in the attachment.
>>>
>>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>>> 0001-add-loongarch64-port-v9.patch are as follows:
>>
>> note, the new names must match gcc, which seems to be the case:
>>
>> https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/loongarch/gnu-user.h;h=9616d6e8a0b8629720a844fd0122dafef682a4cb;hb=HEAD#l36
>
> this seems to be new for gcc-14 and not present in any
> released version of gcc, so in principle gcc can be
> changed.
>
> we just have to make sure whatever is committed in musl
> is compatible with whatever that gets released in gcc-14
> also backport that change to gcc-13 and gcc-12 which
> currently have a broken dynamic linker spec:
> +#define MUSL_DYNAMIC_LINKER \
> + "/lib" ABI_GRLEN_SPEC "/ld-musl-loongarch-" ABI_SPEC ".so.1"
>
We will backport the change to gcc-13 and gcc-12.
>>
>> they do *not* match the names in the cited abi document:
>>
>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html#_program_interpreter_path
>>
>> (uses /lib64/..-loongarch-.. instead of /lib/..-loongarch64-..)
Currently, the abi document only describes the glibc's
program interpreter path, and we will update the musl's
program interpreter path to the abi document later.
>>
>> the diff looks good.
>>
>>>
>>> ---
>>> arch/loongarch64/reloc.h | 10 ++++++----
>>> configure | 4 +++-
>>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>> index a4482b48..6907de8e 100644
>>> --- a/arch/loongarch64/reloc.h
>>> +++ b/arch/loongarch64/reloc.h
>>> @@ -1,7 +1,9 @@
>>> -#ifdef __loongarch_soft_float
>>> -#define FP_SUFFIX "-sf"
>>> -#else
>>> -#define FP_SUFFIX ""
>>> +#if defined __loongarch_double_float
>>> +#define FP_SUFFIX "-lp64d"
>>> +#elif defined __loongarch_single_float
>>> +#define FP_SUFFIX "-lp64f"
>>> +#elif defined __loongarch_soft_float
>>> +#define FP_SUFFIX "-lp64s"
>>> #endif
>>>
>>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>>> diff --git a/configure b/configure
>>> index 55d179f1..93b06287 100755
>>> --- a/configure
>>> +++ b/configure
>>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
>>> fi
>>>
>>> if test "$ARCH" = "loongarch64" ; then
>>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>> printf "checking whether compiler support FCSRs... "
>>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>> --
>>>
>>> Please review again, and point them out if any questions need to be
>>> modified, thanks.
>>>
>>>
>>> Hongliang Wang
>>>
>>> 在 2023/11/14 下午9:16, Jingyun Hua 写道:
>>>> hi,
>>>>
>>>> I have a suggestion regarding the musl dynamic linker name for the
>>>> LoongArch architecture:
>>>>
>>>> The basic ABI types are specified in the ABI document of the LoongArch,
>>>> which can be seen:
>>>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>>>>
>>>> and the dynamic linker name of glibc distinguishes lp64d, lp64s and
>>>> lp64f with abi types.The v8 patch only defines the value of SUBARCH
>>>> as "-sf" for “__loongarch_soft_float”, which means that only
>>>> “ld-musl-loongarch64.so.1” or “ld-musl-loongarch64-sf.so.1” can be
>>>> generated when compiled with the v8 patch.
>>>>
>>>> So I think the musl dynamic linker name for the LoongArch architecture
>>>> needs to be modified, maybe defined like glibc?
>>>>
>>>> Regards,
>>>> Jingyun Hua
>>>>
>>>> On 11/9/23 9:15 PM, Jingyun Hua wrote:
>>>>> Hi all,
>>>>>
>>>>> Thank you for taking the time to check this email. I'm very interested
>>>>> in musl and alpine, and I'd like to know the current status of this
>>>>> patch and what we can do for it next.
>>>>>
>>>>> After Hongliang updated this patch from v7 to v8, in order to verify it,
>>>>> I built the alpine linux from scratch base on this musl v8 patch on the
>>>>> LoongArch64 machine, and successfully compiled projects such as gcc,
>>>>> rust, llvm, go, etc.. Currently, more than 8,500 packages have been
>>>>> built and running normally in my local repository.
>>>>>
>>>>> The patch has indeed been on hold for a long time. Is it in the
>>>>> immediate plans? Is there anything that needs to be modified and
>>>>> improved?
>>>>>
>>>>> Looking forward to your reply, thanks!
>>>>>
>>>>> Regards,
>>>>> Jingyun Hua
>>>>>
>>>>> 在 2023/9/26 上午11:28, Hongliang Wang 写道:
>>>>>> Hi,
>>>>>>
>>>>>> I have fixed the issues listed below, and post
>>>>>> 0001-add-loongarch64-port-v8.patch,as shown in the attachment.
>>>>>> please review again, if there are anything that need to be modified,
>>>>>> please point out, thank you.
>>>>>>
>>>>>> Hongliang Wang
>>>>>>
>>>>>> 在 2023/9/22 上午9:37, Hongliang Wang 写道:
>>>>>>> Hi,
>>>>>>>
>>>>>>> Thank you for your review, I will modify it according to the review
>>>>>>> suggestions and post v8 patch later.
>>>>>>>
>>>>>>> Hongliang Wang
>>>>>>>
>>>>>>> 在 2023/9/20 下午9:16, Szabolcs Nagy 写道:
>>>>>>>> * Jianmin Lv <lvjianmin@loongson.cn> [2023-09-20 15:45:39 +0800]:
>>>>>>>>> Sorry to bother you, but I just want to know if
>>>>>>>>> there is any progress on
>>>>>>>>> this, because Alpine is blocking by this patch for a
>>>>>>>>> long time. As Hongliang
>>>>>>>>> has explained questions you mentioned one by one, if
>>>>>>>>> any question need to be
>>>>>>>>> discussed, please point them out, so that the patch
>>>>>>>>> can be handled further.
>>>>>>>>
>>>>>>>> i think you should post a v8 patch to move
>>>>>>>> this forward. (not on github, but here)
>>>>>>>>
>>>>>>>>> On 2023/8/15 下午4:17, Hongliang Wang wrote:
>>>>>>>>>> 在 2023/8/13 上午9:41, Rich Felker 写道:
>>>>>>>>>>> On Sat, Aug 05, 2023 at 11:43:08AM -0400, Rich Felker wrote:
>>>>>>>>>>>> On Sat, Aug 05, 2023 at 02:18:35PM +0800, 翟小娟 wrote:
>>>>>>>>>>>> -+#define __BYTE_ORDER 1234
>>>>>>>>>>>> ++#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>>>>>>>>
>>>>>>>>>>> This is gratuitous, mismatches what is done on other archs, and is
>>>>>>>>>>> less safe.
>>>>>>>>>>>
>>>>>>>>>> The modification is based on the following review suggestion(
>>>>>>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>>>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>>>>
>>>>>>>>>> `#define __BYTE_ORDER __LITTLE_ENDIAN` could be more consistent
>>>>>>>>>> with other arches.
>>>>>>>>
>>>>>>>> please use 1234.
>>>>>>
>>>>>> --- a/arch/loongarch64/bits/alltypes.h.in
>>>>>> +++ b/arch/loongarch64/bits/alltypes.h.in
>>>>>> @@ -2,7 +2,7 @@
>>>>>> #define _Int64 long
>>>>>> #define _Reg long
>>>>>>
>>>>>> -#define __BYTE_ORDER __LITTLE_ENDIAN
>>>>>> +#define __BYTE_ORDER 1234
>>>>>> #define __LONG_MAX 0x7fffffffffffffffL
>>>>>>
>>>>>>
>>>>>>>>
>>>>>>>>>>>> -+TYPEDEF unsigned nlink_t;
>>>>>>>>>>>> ++TYPEDEF unsigned int nlink_t;
>>>>>>>>>>>
>>>>>>>>>>> Gratuitous and in opposite direction of
>>>>>>>>>>> coding style used elsewhere in
>>>>>>>>>>> musl. There are a few other instances of this too.
>>>>>>>>>>>
>>>>>>>>>> Based on the following review question(WANG Xuerui <i@xen0n.name>
>>>>>>>>>> reviewed in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>>>>
>>>>>>>>>> `unsigned int`? Same for other bare `unsigned` usages.
>>>>>>>>>>
>>>>>>>>>> I fixed it to a explicit definition.
>>>>>>>>
>>>>>>>> please use plain unsigned, not unsigned int.
>>>>>>
>>>>>> --- a/arch/loongarch64/bits/alltypes.h.in
>>>>>> +++ b/arch/loongarch64/bits/alltypes.h.in
>>>>>> @@ -2,7 +2,7 @@
>>>>>>
>>>>>> -TYPEDEF unsigned int nlink_t;
>>>>>> +TYPEDEF unsigned nlink_t;
>>>>>> TYPEDEF int blksize_t;
>>>>>>
>>>>>>>>
>>>>>>>>>>>> -+ register uintptr_t tp __asm__("tp");
>>>>>>>>>>>> -+ __asm__ ("" : "=r" (tp) );
>>>>>>>>>>>> ++ uintptr_t tp;
>>>>>>>>>>>> ++ __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>>>>>>>>>>> + return tp;
>>>>>>>>>>>
>>>>>>>>>>> Not clear what the motivation is here. Is it
>>>>>>>>>>> working around a compiler
>>>>>>>>>>> bug? The original form was more optimal.
>>>>>>>>>>
>>>>>>>>>> The modification is based on the following review suggestion(
>>>>>>>>>> WANG Xuerui <i@xen0n.name> reviewed in
>>>>>>>>>> https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>>>>
>>>>>>>>>> While the current approach works, it's a bit fragile [1], and
>>>>>>>>>> the simple and plain riscv version works too:
>>>>>>>>>>
>>>>>>>>>> uintptr_t tp;
>>>>>>>>>> __asm__ ("move %0, $tp" : "=r"(tp));
>>>>>>>>>>
>>>>>>>>>> [1]:https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html#Local-Register-Variables
>>>>>>>>>>
>>>>>>>>
>>>>>>>> this looks ok to me.
>>>>>>>>
>>>>>>>> (original code looks sketchy to me.)
>>>>>>>>
>>>>>>>>>>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>>>>>>>>> -+ "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>>>>>>> -+
>>>>>>>>>>>> -+#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>>>>>>>>> -+ ".hidden " #sym "\n" \
>>>>>>>>>>>> -+ ".align 8 \n" \
>>>>>>>>>>>> -+ " la.local $t1, "#sym" \n" \
>>>>>>>>>>>> -+ " move %0, $t1 \n" \
>>>>>>>>>>>> -+ : "=r"(*(fp)) : : "memory" )
>>>>>>>>>>>> ++ "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>>>>>>>
>>>>>>>>>>> Not clear why this was changed. It was never
>>>>>>>>>>> discussed afaik. It looks
>>>>>>>>>>> somewhat dubious removing GETFUNCSYM and using the maybe-unreliable
>>>>>>>>>>> default definition.
>>>>>>>>>>>
>>>>>>>>>> Based on the following review question(
>>>>>>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>>>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>>>>
>>>>>>>>>> Does the generic version residing in ldso/dlstart.c not work?
>>>>>>>>>>
>>>>>>>>>> I found the code logic is consistent with the generic version, So
>>>>>>>>>> I removed the definition here and replaced it with generic version.
>>>>>>>>
>>>>>>>> i would change it back to the asm.
>>>>>>>>
>>>>>>>> generic version should work, but maybe we don't
>>>>>>>> want to trust the compiler here (there may be
>>>>>>>> ways to compile the generic code that is not
>>>>>>>> compatible with incompletely relocated libc.so)
>>>>>>>> the asm is safer.
>>>>>>>>
>>>>>> --- a/arch/loongarch64/reloc.h
>>>>>> +++ b/arch/loongarch64/reloc.h
>>>>>> @@ -18,3 +18,10 @@
>>>>>>
>>>>>> #define CRTJMP(pc,sp) __asm__ __volatile__( \
>>>>>> "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>>>>> +
>>>>>> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>>>>> + ".hidden " #sym "\n" \
>>>>>> + ".align 8 \n" \
>>>>>> + " la.local $t1, "#sym" \n" \
>>>>>> + " move %0, $t1 \n" \
>>>>>> + : "=r"(*(fp)) : : "memory" )
>>>>>>
>>>>>>>>>>> It also looks like v5->v6 rewrote sigsetjmp.
>>>>>>>>>>>
>>>>>>>>>> Based on the following review question(
>>>>>>>>>> WANG Xuerui <i@xen0n.name> reviewed
>>>>>>>>>> in https://www.openwall.com/lists/musl/2022/10/12/1):
>>>>>>>>>>
>>>>>>>>>> This is crazy complicated compared to the riscv port, why is the
>>>>>>>>>> juggling between a0/a1 and t5/t6 necessary?
>>>>>>>>>>
>>>>>>>>>> I optimized the code implementations.
>>>>>>>>
>>>>>>>> this should be ok.
>>>>>>>>
>>>>>>>>>>> v6->v7:
>>>>>>>>>>>
>>>>>>>>>>> sigcontext/mcontext_t change mostly makes sense, but the
>>>>>>>>>>> namespace-safe and full mcontext_t differ in
>>>>>>>>>>> their use of the aligned
>>>>>>>>>>> attribute and it's not clear that the
>>>>>>>>>>> attribute is needed (since the
>>>>>>>>>>> offset is naturally aligned and any instance
>>>>>>>>>>> of the object is produced
>>>>>>>>>>> by the kernel, not by userspace).
>>>>>>>>>>>
>>>>>>>>>>>> -+ long __uc_pad;
>>>>>>>>>>>
>>>>>>>>>>> This change to ucontext_t actually makes the
>>>>>>>>>>> struct ABI-incompatible
>>>>>>>>>>> in the namespace-safe version without the
>>>>>>>>>>> alignment attribute. IIRC I
>>>>>>>>>>> explicitly requested the explicit padding
>>>>>>>>>>> field to avoid this kind of
>>>>>>>>>>> footgun. Removing it does not seem like a good idea.
>>>>>>>>>>>
>>>>>>>>>> Initially, we add __uc_pad to ensure uc_mcontext
>>>>>>>>>> is 16 byte alignment.
>>>>>>>>>> Now, we added __attribute__((__aligned__(16))) to
>>>>>>>>>> uc_mcontext.__extcontext[],this can ensure
>>>>>>>>>> uc_mcontext is also 16 byte
>>>>>>>>>> alignment. so __uc_pad is not used.
>>>>>>>>>>
>>>>>>>>>> Remove __uc_pad, from the point of struct
>>>>>>>>>> layout, musl and kernel are
>>>>>>>>>> consistent. otherwise, I think it may bring a sense of inconsistency
>>>>>>>>>> between kernel and musl. Due to Loongarch is not
>>>>>>>>>> merged into musl now,
>>>>>>>>>> Remove it no compatibility issues.
>>>>>>>>
>>>>>>>> please add back the padding field.
>>>>>>
>>>>>> --- a/arch/loongarch64/bits/signal.h
>>>>>> +++ b/arch/loongarch64/bits/signal.h
>>>>>> @@ -40,6 +40,7 @@ typedef struct __ucontext
>>>>>> struct __ucontext *uc_link;
>>>>>> stack_t uc_stack;
>>>>>> sigset_t uc_sigmask;
>>>>>> + long __uc_pad;
>>>>>> mcontext_t uc_mcontext;
>>>>>> } ucontext_t;
>>>>>>
>>>>>>>>
>>>>>>>>>>> In stat.h:
>>>>>>>>>>>
>>>>>>>>>>>> -+ unsigned long __pad;
>>>>>>>>>>>> ++ unsigned long __pad1;
>>>>>>>>>>>
>>>>>>>>>>> This is gratuitous and makes the definition
>>>>>>>>>>> gratuitously mismatch what
>>>>>>>>>>> will become the "generic" version of
>>>>>>>>>>> bits/stat.h. There is no contract
>>>>>>>>>>> for applications to be able to access these
>>>>>>>>>>> padding fields by name, so
>>>>>>>>>>> no motivation to make their names match
>>>>>>>>>>> glibc's names or the kernel's.
>>>>>>>>>>>
>>>>>>>>>> OK.
>>>>>>>>
>>>>>>>> please fix it.
>>>>>>
>>>>>> --- a/arch/loongarch64/bits/stat.h
>>>>>> +++ b/arch/loongarch64/bits/stat.h
>>>>>> @@ -6,7 +6,7 @@ struct stat {
>>>>>> uid_t st_uid;
>>>>>> gid_t st_gid;
>>>>>> dev_t st_rdev;
>>>>>> - unsigned long __pad1;
>>>>>> + unsigned long __pad;
>>>>>> off_t st_size;
>>>>>> blksize_t st_blksize;
>>>>>> int __pad2;
>>>>>>
>>>>>>>>
>>>>>>>>>>> In fenv.S:
>>>>>>>>>>>
>>>>>>>>>>>> ++#ifdef __clang__
>>>>>>>>>>>> ++#define FCSR $fcsr0
>>>>>>>>>>>> ++#else
>>>>>>>>>>>> ++#define FCSR $r0
>>>>>>>>>>>> ++#endif
>>>>>>>>>>>
>>>>>>>>>>> It's not clear to me what's going on here. Is there a clang
>>>>>>>>>>> incompatibility in the assembler language you're working around? Or
>>>>>>>>>>> what? If so that seems like a tooling bug that should be fixed.
>>>>>>>>>>>
>>>>>>>>>> The GNU assembler cannot correctly recognize $fcsr0, but the
>>>>>>>>>> LLVM IAS does not have this issue, so make a distinction.
>>>>>>>>>> This issue has been fixed in GNU assembler 2.41. but for compatible
>>>>>>>>>> with GNU assembler 2.40 and below, $r0 need reserved.
>>>>>>>>
>>>>>>>> it sounds like the correct asm is $fcsr0, so that's
>>>>>>>> what should be used on all assemblers, not just on
>>>>>>>> clang as.
>>>>>>>>
>>>>>>>> only broken old gnu as should use different syntax.
>>>>>>>> for this a configure test is needed that adds a
>>>>>>>> CFLAG like -DBROKEN_LOONGARCH_FCSR_ASM when fails.
>>>>>>>> and use that for the ifdef.
>>>>>>>>
>>>>>> --- a/configure
>>>>>> +++ b/configure
>>>>>>
>>>>>> if test "$ARCH" = "loongarch64" ; then
>>>>>> trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>>>>> +printf "checking whether compiler support FCSRs... "
>>>>>> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>>>>> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>>>>> +printf "yes\n"
>>>>>> +else
>>>>>> +printf "no\n"
>>>>>> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
>>>>>> +fi
>>>>>> fi
>>>>>>
>>>>>> --- a/src/fenv/loongarch64/fenv.S
>>>>>> +++ b/src/fenv/loongarch64/fenv.S
>>>>>> @@ -1,9 +1,9 @@
>>>>>> #ifndef __loongarch_soft_float
>>>>>>
>>>>>> -#ifdef __clang__
>>>>>> -#define FCSR $fcsr0
>>>>>> -#else
>>>>>> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
>>>>>> #define FCSR $r0
>>>>>> +#else
>>>>>> +#define FCSR $fcsr0
>>>>>> #endif
>>>>>>
>>>>>> .global feclearexcept
>>>>>>
>>>>>>>>>>
>>>>>>>>>> The linux kernel also has a similar distinction:
>>>>>>>>>>
>>>>>>>>>> commit 38bb46f94544c5385bc35aa2bfc776dcf53a7b5d
>>>>>>>>>> Author: WANG Xuerui <git@xen0n.name>
>>>>>>>>>> Date: Thu Jun 29 20:58:43 2023 +0800
>>>>>>>>>>
>>>>>>>>>> LoongArch: Prepare for assemblers with
>>>>>>>>>> proper FCSR class support
>>>>>>>>>>
>>>>>>>>>> The GNU assembler (as of 2.40) mis-treats
>>>>>>>>>> FCSR operands as GPRs, but
>>>>>>>>>> the LLVM IAS does not. Probe for this and
>>>>>>>>>> refer to FCSRs as"$fcsrNN"
>>>>>>>>>> if support is present.
>>>>>>>>>>
>>>>>>>>>> Signed-off-by: WANG Xuerui <git@xen0n.name>
>>>>>>>>>> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
>>>>>>>>>>
>>>>>>>>>>> Otherwise, everything looks as expected, I
>>>>>>>>>>> think. I'm okay with making
>>>>>>>>>>> any fixups for merging rather than throwing
>>>>>>>>>>> this back on your team for
>>>>>>>>>>> more revisions, but can you please follow up and clarify the above?
>>>>>>>>
>>>>>>>> all issues look minor.
>>>>>>>>
>>>>>>>> if you post a v8 it likely gets into a release faster.
>>>>>>>>
>>>>>
>>>>
>>
>>> >From 2d5f9717fda5c16f10d805ce8a26f1e78de440ea Mon Sep 17 00:00:00 2001
>>> From: wanghongliang <wanghongliang@loongson.cn>
>>> Date: Wed, 15 Nov 2023 01:31:51 +0800
>>> Subject: [PATCH] add loongarch64 port v9.
>>>
>>> Author: Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
>>> Author: Meidan Li <limeidan@loongson.cn>
>>> Author: Guoqi Chen <chenguoqi@loongson.cn>
>>> Author: Xiaolin Zhao <zhaoxiaolin@loongson.cn>
>>> Author: Fan peng <fanpeng@loongson.cn>
>>> Author: Jiantao Shan <shanjiantao@loongson.cn>
>>> Author: Xuhui Qiang <qiangxuhui@loongson.cn>
>>> Author: Jingyun Hua <huajingyun@loongson.cn>
>>> Author: Liu xue <liuxue@loongson.cn>
>>> Author: Hongliang Wang <wanghongliang@loongson.cn>
>>>
>>> Signed-off-by: wanghongliang <wanghongliang@loongson.cn>
>>> ---
>>> arch/loongarch64/atomic_arch.h | 53 ++++
>>> arch/loongarch64/bits/alltypes.h.in | 18 ++
>>> arch/loongarch64/bits/fenv.h | 20 ++
>>> arch/loongarch64/bits/float.h | 16 ++
>>> arch/loongarch64/bits/posix.h | 2 +
>>> arch/loongarch64/bits/ptrace.h | 4 +
>>> arch/loongarch64/bits/reg.h | 2 +
>>> arch/loongarch64/bits/setjmp.h | 1 +
>>> arch/loongarch64/bits/signal.h | 92 +++++++
>>> arch/loongarch64/bits/stat.h | 18 ++
>>> arch/loongarch64/bits/stdint.h | 20 ++
>>> arch/loongarch64/bits/syscall.h.in | 303 +++++++++++++++++++++
>>> arch/loongarch64/bits/user.h | 5 +
>>> arch/loongarch64/crt_arch.h | 13 +
>>> arch/loongarch64/pthread_arch.h | 11 +
>>> arch/loongarch64/reloc.h | 29 ++
>>> arch/loongarch64/syscall_arch.h | 137 ++++++++++
>>> configure | 15 +
>>> include/elf.h | 104 ++++++-
>>> src/fenv/loongarch64/fenv.S | 78 ++++++
>>> src/ldso/loongarch64/dlsym.s | 7 +
>>> src/setjmp/loongarch64/longjmp.S | 32 +++
>>> src/setjmp/loongarch64/setjmp.S | 34 +++
>>> src/signal/loongarch64/restore.s | 10 +
>>> src/signal/loongarch64/sigsetjmp.s | 25 ++
>>> src/thread/loongarch64/__set_thread_area.s | 7 +
>>> src/thread/loongarch64/__unmapself.s | 7 +
>>> src/thread/loongarch64/clone.s | 28 ++
>>> src/thread/loongarch64/syscall_cp.s | 29 ++
>>> 29 files changed, 1119 insertions(+), 1 deletion(-)
>>> create mode 100644 arch/loongarch64/atomic_arch.h
>>> create mode 100644 arch/loongarch64/bits/alltypes.h.in
>>> create mode 100644 arch/loongarch64/bits/fenv.h
>>> create mode 100644 arch/loongarch64/bits/float.h
>>> create mode 100644 arch/loongarch64/bits/posix.h
>>> create mode 100644 arch/loongarch64/bits/ptrace.h
>>> create mode 100644 arch/loongarch64/bits/reg.h
>>> create mode 100644 arch/loongarch64/bits/setjmp.h
>>> create mode 100644 arch/loongarch64/bits/signal.h
>>> create mode 100644 arch/loongarch64/bits/stat.h
>>> create mode 100644 arch/loongarch64/bits/stdint.h
>>> create mode 100644 arch/loongarch64/bits/syscall.h.in
>>> create mode 100644 arch/loongarch64/bits/user.h
>>> create mode 100644 arch/loongarch64/crt_arch.h
>>> create mode 100644 arch/loongarch64/pthread_arch.h
>>> create mode 100644 arch/loongarch64/reloc.h
>>> create mode 100644 arch/loongarch64/syscall_arch.h
>>> create mode 100644 src/fenv/loongarch64/fenv.S
>>> create mode 100644 src/ldso/loongarch64/dlsym.s
>>> create mode 100644 src/setjmp/loongarch64/longjmp.S
>>> create mode 100644 src/setjmp/loongarch64/setjmp.S
>>> create mode 100644 src/signal/loongarch64/restore.s
>>> create mode 100644 src/signal/loongarch64/sigsetjmp.s
>>> create mode 100644 src/thread/loongarch64/__set_thread_area.s
>>> create mode 100644 src/thread/loongarch64/__unmapself.s
>>> create mode 100644 src/thread/loongarch64/clone.s
>>> create mode 100644 src/thread/loongarch64/syscall_cp.s
>>>
>>> diff --git a/arch/loongarch64/atomic_arch.h b/arch/loongarch64/atomic_arch.h
>>> new file mode 100644
>>> index 00000000..2225d027
>>> --- /dev/null
>>> +++ b/arch/loongarch64/atomic_arch.h
>>> @@ -0,0 +1,53 @@
>>> +#define a_ll a_ll
>>> +static inline int a_ll(volatile int *p)
>>> +{
>>> + int v;
>>> + __asm__ __volatile__ (
>>> + "ll.w %0, %1"
>>> + : "=r"(v)
>>> + : "ZC"(*p));
>>> + return v;
>>> +}
>>> +
>>> +#define a_sc a_sc
>>> +static inline int a_sc(volatile int *p, int v)
>>> +{
>>> + int r;
>>> + __asm__ __volatile__ (
>>> + "sc.w %0, %1"
>>> + : "=r"(r), "=ZC"(*p)
>>> + : "0"(v) : "memory");
>>> + return r;
>>> +}
>>> +
>>> +#define a_ll_p a_ll_p
>>> +static inline void *a_ll_p(volatile void *p)
>>> +{
>>> + void *v;
>>> + __asm__ __volatile__ (
>>> + "ll.d %0, %1"
>>> + : "=r"(v)
>>> + : "ZC"(*(void *volatile *)p));
>>> + return v;
>>> +}
>>> +
>>> +#define a_sc_p a_sc_p
>>> +static inline int a_sc_p(volatile void *p, void *v)
>>> +{
>>> + long r;
>>> + __asm__ __volatile__ (
>>> + "sc.d %0, %1"
>>> + : "=r"(r), "=ZC"(*(void *volatile *)p)
>>> + : "0"(v)
>>> + : "memory");
>>> + return r;
>>> +}
>>> +
>>> +#define a_barrier a_barrier
>>> +static inline void a_barrier()
>>> +{
>>> + __asm__ __volatile__ ("dbar 0" : : : "memory");
>>> +}
>>> +
>>> +#define a_pre_llsc a_barrier
>>> +#define a_post_llsc a_barrier
>>> diff --git a/arch/loongarch64/bits/alltypes.h.in b/arch/loongarch64/bits/alltypes.h.in
>>> new file mode 100644
>>> index 00000000..06db4096
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/alltypes.h.in
>>> @@ -0,0 +1,18 @@
>>> +#define _Addr long
>>> +#define _Int64 long
>>> +#define _Reg long
>>> +
>>> +#define __BYTE_ORDER 1234
>>> +#define __LONG_MAX 0x7fffffffffffffffL
>>> +
>>> +#ifndef __cplusplus
>>> +TYPEDEF int wchar_t;
>>> +#endif
>>> +
>>> +TYPEDEF float float_t;
>>> +TYPEDEF double double_t;
>>> +
>>> +TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
>>> +
>>> +TYPEDEF unsigned nlink_t;
>>> +TYPEDEF int blksize_t;
>>> diff --git a/arch/loongarch64/bits/fenv.h b/arch/loongarch64/bits/fenv.h
>>> new file mode 100644
>>> index 00000000..99e916e1
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/fenv.h
>>> @@ -0,0 +1,20 @@
>>> +#define FE_INEXACT 0x010000
>>> +#define FE_UNDERFLOW 0x020000
>>> +#define FE_OVERFLOW 0x040000
>>> +#define FE_DIVBYZERO 0x080000
>>> +#define FE_INVALID 0x100000
>>> +
>>> +#define FE_ALL_EXCEPT 0x1F0000
>>> +
>>> +#define FE_TONEAREST 0x000
>>> +#define FE_TOWARDZERO 0x100
>>> +#define FE_UPWARD 0x200
>>> +#define FE_DOWNWARD 0x300
>>> +
>>> +typedef unsigned fexcept_t;
>>> +
>>> +typedef struct {
>>> + unsigned int __cw;
>>> +} fenv_t;
>>> +
>>> +#define FE_DFL_ENV ((const fenv_t *) -1)
>>> diff --git a/arch/loongarch64/bits/float.h b/arch/loongarch64/bits/float.h
>>> new file mode 100644
>>> index 00000000..63e86d44
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/float.h
>>> @@ -0,0 +1,16 @@
>>> +#define FLT_EVAL_METHOD 0
>>> +
>>> +#define LDBL_TRUE_MIN 6.47517511943802511092443895822764655e-4966L
>>> +#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
>>> +#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
>>> +#define LDBL_EPSILON 1.92592994438723585305597794258492732e-34L
>>> +
>>> +#define LDBL_MANT_DIG 113
>>> +#define LDBL_MIN_EXP (-16381)
>>> +#define LDBL_MAX_EXP 16384
>>> +
>>> +#define LDBL_DIG 33
>>> +#define LDBL_MIN_10_EXP (-4931)
>>> +#define LDBL_MAX_10_EXP 4932
>>> +
>>> +#define DECIMAL_DIG 36
>>> diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
>>> new file mode 100644
>>> index 00000000..c37b94c1
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/posix.h
>>> @@ -0,0 +1,2 @@
>>> +#define _POSIX_V6_LP64_OFF64 1
>>> +#define _POSIX_V7_LP64_OFF64 1
>>> diff --git a/arch/loongarch64/bits/ptrace.h b/arch/loongarch64/bits/ptrace.h
>>> new file mode 100644
>>> index 00000000..dce2fa51
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/ptrace.h
>>> @@ -0,0 +1,4 @@
>>> +#define PTRACE_GET_THREAD_AREA 25
>>> +#define PTRACE_SET_THREAD_AREA 26
>>> +#define PTRACE_GET_WATCH_REGS 0xd0
>>> +#define PTRACE_SET_WATCH_REGS 0xd1
>>> diff --git a/arch/loongarch64/bits/reg.h b/arch/loongarch64/bits/reg.h
>>> new file mode 100644
>>> index 00000000..2633f39d
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/reg.h
>>> @@ -0,0 +1,2 @@
>>> +#undef __WORDSIZE
>>> +#define __WORDSIZE 64
>>> diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
>>> new file mode 100644
>>> index 00000000..4bfa374d
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/setjmp.h
>>> @@ -0,0 +1 @@
>>> +typedef unsigned long __jmp_buf[23];
>>> diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
>>> new file mode 100644
>>> index 00000000..e1d256e7
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/signal.h
>>> @@ -0,0 +1,92 @@
>>> +#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
>>> + || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>> +
>>> +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>> +#define MINSIGSTKSZ 4096
>>> +#define SIGSTKSZ 16384
>>> +#endif
>>> +
>>> +#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
>>> +typedef unsigned long greg_t, gregset_t[32];
>>> +
>>> +struct sigcontext {
>>> + unsigned long sc_pc;
>>> + unsigned long sc_regs[32];
>>> + unsigned int sc_flags;
>>> + unsigned long sc_extcontext[] __attribute__((__aligned__(16)));
>>> +};
>>> +
>>> +typedef struct {
>>> + unsigned long __pc;
>>> + unsigned long __gregs[32];
>>> + unsigned int __flags;
>>> + unsigned long __extcontext[] __attribute__((__aligned__(16)));
>>> +} mcontext_t;
>>> +#else
>>> +typedef struct {
>>> + unsigned long __space[34];
>>> +} mcontext_t;
>>> +#endif
>>> +
>>> +struct sigaltstack {
>>> + void *ss_sp;
>>> + int ss_flags;
>>> + size_t ss_size;
>>> +};
>>> +
>>> +typedef struct __ucontext
>>> +{
>>> + unsigned long __uc_flags;
>>> + struct __ucontext *uc_link;
>>> + stack_t uc_stack;
>>> + sigset_t uc_sigmask;
>>> + long __uc_pad;
>>> + mcontext_t uc_mcontext;
>>> +} ucontext_t;
>>> +
>>> +#define SA_NOCLDSTOP 1
>>> +#define SA_NOCLDWAIT 2
>>> +#define SA_SIGINFO 4
>>> +#define SA_ONSTACK 0x08000000
>>> +#define SA_RESTART 0x10000000
>>> +#define SA_NODEFER 0x40000000
>>> +#define SA_RESETHAND 0x80000000
>>> +#define SA_RESTORER 0x0
>>> +
>>> +#endif
>>> +
>>> +#define SIGHUP 1
>>> +#define SIGINT 2
>>> +#define SIGQUIT 3
>>> +#define SIGILL 4
>>> +#define SIGTRAP 5
>>> +#define SIGABRT 6
>>> +#define SIGIOT SIGABRT
>>> +#define SIGBUS 7
>>> +#define SIGFPE 8
>>> +#define SIGKILL 9
>>> +#define SIGUSR1 10
>>> +#define SIGSEGV 11
>>> +#define SIGUSR2 12
>>> +#define SIGPIPE 13
>>> +#define SIGALRM 14
>>> +#define SIGTERM 15
>>> +#define SIGSTKFLT 16
>>> +#define SIGCHLD 17
>>> +#define SIGCONT 18
>>> +#define SIGSTOP 19
>>> +#define SIGTSTP 20
>>> +#define SIGTTIN 21
>>> +#define SIGTTOU 22
>>> +#define SIGURG 23
>>> +#define SIGXCPU 24
>>> +#define SIGXFSZ 25
>>> +#define SIGVTALRM 26
>>> +#define SIGPROF 27
>>> +#define SIGWINCH 28
>>> +#define SIGIO 29
>>> +#define SIGPOLL SIGIO
>>> +#define SIGPWR 30
>>> +#define SIGSYS 31
>>> +#define SIGUNUSED SIGSYS
>>> +#define _NSIG 65
>>> diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
>>> new file mode 100644
>>> index 00000000..b7f4221b
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/stat.h
>>> @@ -0,0 +1,18 @@
>>> +struct stat {
>>> + dev_t st_dev;
>>> + ino_t st_ino;
>>> + mode_t st_mode;
>>> + nlink_t st_nlink;
>>> + uid_t st_uid;
>>> + gid_t st_gid;
>>> + dev_t st_rdev;
>>> + unsigned long __pad;
>>> + off_t st_size;
>>> + blksize_t st_blksize;
>>> + int __pad2;
>>> + blkcnt_t st_blocks;
>>> + struct timespec st_atim;
>>> + struct timespec st_mtim;
>>> + struct timespec st_ctim;
>>> + unsigned __unused[2];
>>> +};
>>> diff --git a/arch/loongarch64/bits/stdint.h b/arch/loongarch64/bits/stdint.h
>>> new file mode 100644
>>> index 00000000..60c12499
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/stdint.h
>>> @@ -0,0 +1,20 @@
>>> +typedef int32_t int_fast16_t;
>>> +typedef int32_t int_fast32_t;
>>> +typedef uint32_t uint_fast16_t;
>>> +typedef uint32_t uint_fast32_t;
>>> +
>>> +#define INT_FAST16_MIN INT32_MIN
>>> +#define INT_FAST32_MIN INT32_MIN
>>> +
>>> +#define INT_FAST16_MAX INT32_MAX
>>> +#define INT_FAST32_MAX INT32_MAX
>>> +
>>> +#define UINT_FAST16_MAX UINT32_MAX
>>> +#define UINT_FAST32_MAX UINT32_MAX
>>> +
>>> +#define INTPTR_MIN INT64_MIN
>>> +#define INTPTR_MAX INT64_MAX
>>> +#define UINTPTR_MAX UINT64_MAX
>>> +#define PTRDIFF_MIN INT64_MIN
>>> +#define PTRDIFF_MAX INT64_MAX
>>> +#define SIZE_MAX UINT64_MAX
>>> diff --git a/arch/loongarch64/bits/syscall.h.in b/arch/loongarch64/bits/syscall.h.in
>>> new file mode 100644
>>> index 00000000..0980e533
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/syscall.h.in
>>> @@ -0,0 +1,303 @@
>>> +#define __NR_io_setup 0
>>> +#define __NR_io_destroy 1
>>> +#define __NR_io_submit 2
>>> +#define __NR_io_cancel 3
>>> +#define __NR_io_getevents 4
>>> +#define __NR_setxattr 5
>>> +#define __NR_lsetxattr 6
>>> +#define __NR_fsetxattr 7
>>> +#define __NR_getxattr 8
>>> +#define __NR_lgetxattr 9
>>> +#define __NR_fgetxattr 10
>>> +#define __NR_listxattr 11
>>> +#define __NR_llistxattr 12
>>> +#define __NR_flistxattr 13
>>> +#define __NR_removexattr 14
>>> +#define __NR_lremovexattr 15
>>> +#define __NR_fremovexattr 16
>>> +#define __NR_getcwd 17
>>> +#define __NR_lookup_dcookie 18
>>> +#define __NR_eventfd2 19
>>> +#define __NR_epoll_create1 20
>>> +#define __NR_epoll_ctl 21
>>> +#define __NR_epoll_pwait 22
>>> +#define __NR_dup 23
>>> +#define __NR_dup3 24
>>> +#define __NR3264_fcntl 25
>>> +#define __NR_inotify_init1 26
>>> +#define __NR_inotify_add_watch 27
>>> +#define __NR_inotify_rm_watch 28
>>> +#define __NR_ioctl 29
>>> +#define __NR_ioprio_set 30
>>> +#define __NR_ioprio_get 31
>>> +#define __NR_flock 32
>>> +#define __NR_mknodat 33
>>> +#define __NR_mkdirat 34
>>> +#define __NR_unlinkat 35
>>> +#define __NR_symlinkat 36
>>> +#define __NR_linkat 37
>>> +#define __NR_umount2 39
>>> +#define __NR_mount 40
>>> +#define __NR_pivot_root 41
>>> +#define __NR_nfsservctl 42
>>> +#define __NR3264_statfs 43
>>> +#define __NR3264_fstatfs 44
>>> +#define __NR3264_truncate 45
>>> +#define __NR3264_ftruncate 46
>>> +#define __NR_fallocate 47
>>> +#define __NR_faccessat 48
>>> +#define __NR_chdir 49
>>> +#define __NR_fchdir 50
>>> +#define __NR_chroot 51
>>> +#define __NR_fchmod 52
>>> +#define __NR_fchmodat 53
>>> +#define __NR_fchownat 54
>>> +#define __NR_fchown 55
>>> +#define __NR_openat 56
>>> +#define __NR_close 57
>>> +#define __NR_vhangup 58
>>> +#define __NR_pipe2 59
>>> +#define __NR_quotactl 60
>>> +#define __NR_getdents64 61
>>> +#define __NR3264_lseek 62
>>> +#define __NR_read 63
>>> +#define __NR_write 64
>>> +#define __NR_readv 65
>>> +#define __NR_writev 66
>>> +#define __NR_pread64 67
>>> +#define __NR_pwrite64 68
>>> +#define __NR_preadv 69
>>> +#define __NR_pwritev 70
>>> +#define __NR3264_sendfile 71
>>> +#define __NR_pselect6 72
>>> +#define __NR_ppoll 73
>>> +#define __NR_signalfd4 74
>>> +#define __NR_vmsplice 75
>>> +#define __NR_splice 76
>>> +#define __NR_tee 77
>>> +#define __NR_readlinkat 78
>>> +#define __NR_sync 81
>>> +#define __NR_fsync 82
>>> +#define __NR_fdatasync 83
>>> +#define __NR_sync_file_range 84
>>> +#define __NR_timerfd_create 85
>>> +#define __NR_timerfd_settime 86
>>> +#define __NR_timerfd_gettime 87
>>> +#define __NR_utimensat 88
>>> +#define __NR_acct 89
>>> +#define __NR_capget 90
>>> +#define __NR_capset 91
>>> +#define __NR_personality 92
>>> +#define __NR_exit 93
>>> +#define __NR_exit_group 94
>>> +#define __NR_waitid 95
>>> +#define __NR_set_tid_address 96
>>> +#define __NR_unshare 97
>>> +#define __NR_futex 98
>>> +#define __NR_set_robust_list 99
>>> +#define __NR_get_robust_list 100
>>> +#define __NR_nanosleep 101
>>> +#define __NR_getitimer 102
>>> +#define __NR_setitimer 103
>>> +#define __NR_kexec_load 104
>>> +#define __NR_init_module 105
>>> +#define __NR_delete_module 106
>>> +#define __NR_timer_create 107
>>> +#define __NR_timer_gettime 108
>>> +#define __NR_timer_getoverrun 109
>>> +#define __NR_timer_settime 110
>>> +#define __NR_timer_delete 111
>>> +#define __NR_clock_settime 112
>>> +#define __NR_clock_gettime 113
>>> +#define __NR_clock_getres 114
>>> +#define __NR_clock_nanosleep 115
>>> +#define __NR_syslog 116
>>> +#define __NR_ptrace 117
>>> +#define __NR_sched_setparam 118
>>> +#define __NR_sched_setscheduler 119
>>> +#define __NR_sched_getscheduler 120
>>> +#define __NR_sched_getparam 121
>>> +#define __NR_sched_setaffinity 122
>>> +#define __NR_sched_getaffinity 123
>>> +#define __NR_sched_yield 124
>>> +#define __NR_sched_get_priority_max 125
>>> +#define __NR_sched_get_priority_min 126
>>> +#define __NR_sched_rr_get_interval 127
>>> +#define __NR_restart_syscall 128
>>> +#define __NR_kill 129
>>> +#define __NR_tkill 130
>>> +#define __NR_tgkill 131
>>> +#define __NR_sigaltstack 132
>>> +#define __NR_rt_sigsuspend 133
>>> +#define __NR_rt_sigaction 134
>>> +#define __NR_rt_sigprocmask 135
>>> +#define __NR_rt_sigpending 136
>>> +#define __NR_rt_sigtimedwait 137
>>> +#define __NR_rt_sigqueueinfo 138
>>> +#define __NR_rt_sigreturn 139
>>> +#define __NR_setpriority 140
>>> +#define __NR_getpriority 141
>>> +#define __NR_reboot 142
>>> +#define __NR_setregid 143
>>> +#define __NR_setgid 144
>>> +#define __NR_setreuid 145
>>> +#define __NR_setuid 146
>>> +#define __NR_setresuid 147
>>> +#define __NR_getresuid 148
>>> +#define __NR_setresgid 149
>>> +#define __NR_getresgid 150
>>> +#define __NR_setfsuid 151
>>> +#define __NR_setfsgid 152
>>> +#define __NR_times 153
>>> +#define __NR_setpgid 154
>>> +#define __NR_getpgid 155
>>> +#define __NR_getsid 156
>>> +#define __NR_setsid 157
>>> +#define __NR_getgroups 158
>>> +#define __NR_setgroups 159
>>> +#define __NR_uname 160
>>> +#define __NR_sethostname 161
>>> +#define __NR_setdomainname 162
>>> +#define __NR_getrlimit 163
>>> +#define __NR_setrlimit 164
>>> +#define __NR_getrusage 165
>>> +#define __NR_umask 166
>>> +#define __NR_prctl 167
>>> +#define __NR_getcpu 168
>>> +#define __NR_gettimeofday 169
>>> +#define __NR_settimeofday 170
>>> +#define __NR_adjtimex 171
>>> +#define __NR_getpid 172
>>> +#define __NR_getppid 173
>>> +#define __NR_getuid 174
>>> +#define __NR_geteuid 175
>>> +#define __NR_getgid 176
>>> +#define __NR_getegid 177
>>> +#define __NR_gettid 178
>>> +#define __NR_sysinfo 179
>>> +#define __NR_mq_open 180
>>> +#define __NR_mq_unlink 181
>>> +#define __NR_mq_timedsend 182
>>> +#define __NR_mq_timedreceive 183
>>> +#define __NR_mq_notify 184
>>> +#define __NR_mq_getsetattr 185
>>> +#define __NR_msgget 186
>>> +#define __NR_msgctl 187
>>> +#define __NR_msgrcv 188
>>> +#define __NR_msgsnd 189
>>> +#define __NR_semget 190
>>> +#define __NR_semctl 191
>>> +#define __NR_semtimedop 192
>>> +#define __NR_semop 193
>>> +#define __NR_shmget 194
>>> +#define __NR_shmctl 195
>>> +#define __NR_shmat 196
>>> +#define __NR_shmdt 197
>>> +#define __NR_socket 198
>>> +#define __NR_socketpair 199
>>> +#define __NR_bind 200
>>> +#define __NR_listen 201
>>> +#define __NR_accept 202
>>> +#define __NR_connect 203
>>> +#define __NR_getsockname 204
>>> +#define __NR_getpeername 205
>>> +#define __NR_sendto 206
>>> +#define __NR_recvfrom 207
>>> +#define __NR_setsockopt 208
>>> +#define __NR_getsockopt 209
>>> +#define __NR_shutdown 210
>>> +#define __NR_sendmsg 211
>>> +#define __NR_recvmsg 212
>>> +#define __NR_readahead 213
>>> +#define __NR_brk 214
>>> +#define __NR_munmap 215
>>> +#define __NR_mremap 216
>>> +#define __NR_add_key 217
>>> +#define __NR_request_key 218
>>> +#define __NR_keyctl 219
>>> +#define __NR_clone 220
>>> +#define __NR_execve 221
>>> +#define __NR3264_mmap 222
>>> +#define __NR3264_fadvise64 223
>>> +#define __NR_swapon 224
>>> +#define __NR_swapoff 225
>>> +#define __NR_mprotect 226
>>> +#define __NR_msync 227
>>> +#define __NR_mlock 228
>>> +#define __NR_munlock 229
>>> +#define __NR_mlockall 230
>>> +#define __NR_munlockall 231
>>> +#define __NR_mincore 232
>>> +#define __NR_madvise 233
>>> +#define __NR_remap_file_pages 234
>>> +#define __NR_mbind 235
>>> +#define __NR_get_mempolicy 236
>>> +#define __NR_set_mempolicy 237
>>> +#define __NR_migrate_pages 238
>>> +#define __NR_move_pages 239
>>> +#define __NR_rt_tgsigqueueinfo 240
>>> +#define __NR_perf_event_open 241
>>> +#define __NR_accept4 242
>>> +#define __NR_recvmmsg 243
>>> +#define __NR_arch_specific_syscall 244
>>> +#define __NR_wait4 260
>>> +#define __NR_prlimit64 261
>>> +#define __NR_fanotify_init 262
>>> +#define __NR_fanotify_mark 263
>>> +#define __NR_name_to_handle_at 264
>>> +#define __NR_open_by_handle_at 265
>>> +#define __NR_clock_adjtime 266
>>> +#define __NR_syncfs 267
>>> +#define __NR_setns 268
>>> +#define __NR_sendmmsg 269
>>> +#define __NR_process_vm_readv 270
>>> +#define __NR_process_vm_writev 271
>>> +#define __NR_kcmp 272
>>> +#define __NR_finit_module 273
>>> +#define __NR_sched_setattr 274
>>> +#define __NR_sched_getattr 275
>>> +#define __NR_renameat2 276
>>> +#define __NR_seccomp 277
>>> +#define __NR_getrandom 278
>>> +#define __NR_memfd_create 279
>>> +#define __NR_bpf 280
>>> +#define __NR_execveat 281
>>> +#define __NR_userfaultfd 282
>>> +#define __NR_membarrier 283
>>> +#define __NR_mlock2 284
>>> +#define __NR_copy_file_range 285
>>> +#define __NR_preadv2 286
>>> +#define __NR_pwritev2 287
>>> +#define __NR_pkey_mprotect 288
>>> +#define __NR_pkey_alloc 289
>>> +#define __NR_pkey_free 290
>>> +#define __NR_statx 291
>>> +#define __NR_io_pgetevents 292
>>> +#define __NR_rseq 293
>>> +#define __NR_kexec_file_load 294
>>> +#define __NR_pidfd_send_signal 424
>>> +#define __NR_io_uring_setup 425
>>> +#define __NR_io_uring_enter 426
>>> +#define __NR_io_uring_register 427
>>> +#define __NR_open_tree 428
>>> +#define __NR_move_mount 429
>>> +#define __NR_fsopen 430
>>> +#define __NR_fsconfig 431
>>> +#define __NR_fsmount 432
>>> +#define __NR_fspick 433
>>> +#define __NR_pidfd_open 434
>>> +#define __NR_clone3 435
>>> +#define __NR_close_range 436
>>> +#define __NR_openat2 437
>>> +#define __NR_pidfd_getfd 438
>>> +#define __NR_faccessat2 439
>>> +#define __NR_process_madvise 440
>>> +#define __NR_fcntl __NR3264_fcntl
>>> +#define __NR_statfs __NR3264_statfs
>>> +#define __NR_fstatfs __NR3264_fstatfs
>>> +#define __NR_truncate __NR3264_truncate
>>> +#define __NR_ftruncate __NR3264_ftruncate
>>> +#define __NR_lseek __NR3264_lseek
>>> +#define __NR_sendfile __NR3264_sendfile
>>> +#define __NR_mmap __NR3264_mmap
>>> +#define __NR_fadvise64 __NR3264_fadvise64
>>> diff --git a/arch/loongarch64/bits/user.h b/arch/loongarch64/bits/user.h
>>> new file mode 100644
>>> index 00000000..5a71d132
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/user.h
>>> @@ -0,0 +1,5 @@
>>> +#define ELF_NGREG 45
>>> +#define ELF_NFPREG 33
>>> +
>>> +typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
>>> +typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
>>> diff --git a/arch/loongarch64/crt_arch.h b/arch/loongarch64/crt_arch.h
>>> new file mode 100644
>>> index 00000000..e0760d9e
>>> --- /dev/null
>>> +++ b/arch/loongarch64/crt_arch.h
>>> @@ -0,0 +1,13 @@
>>> +__asm__(
>>> +".text \n"
>>> +".global " START "\n"
>>> +".type " START ", @function\n"
>>> +START ":\n"
>>> +" move $fp, $zero\n"
>>> +" move $a0, $sp\n"
>>> +".weak _DYNAMIC\n"
>>> +".hidden _DYNAMIC\n"
>>> +" la.local $a1, _DYNAMIC\n"
>>> +" bstrins.d $sp, $zero, 3, 0\n"
>>> +" b " START "_c\n"
>>> +);
>>> diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
>>> new file mode 100644
>>> index 00000000..28fbfcd1
>>> --- /dev/null
>>> +++ b/arch/loongarch64/pthread_arch.h
>>> @@ -0,0 +1,11 @@
>>> +static inline uintptr_t __get_tp()
>>> +{
>>> + uintptr_t tp;
>>> + __asm__ __volatile__("move %0, $tp" : "=r"(tp));
>>> + return tp;
>>> +}
>>> +
>>> +#define TLS_ABOVE_TP
>>> +#define GAP_ABOVE_TP 0
>>> +#define DTP_OFFSET 0
>>> +#define MC_PC __pc
>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>> new file mode 100644
>>> index 00000000..6907de8e
>>> --- /dev/null
>>> +++ b/arch/loongarch64/reloc.h
>>> @@ -0,0 +1,29 @@
>>> +#if defined __loongarch_double_float
>>> +#define FP_SUFFIX "-lp64d"
>>> +#elif defined __loongarch_single_float
>>> +#define FP_SUFFIX "-lp64f"
>>> +#elif defined __loongarch_soft_float
>>> +#define FP_SUFFIX "-lp64s"
>>> +#endif
>>> +
>>> +#define LDSO_ARCH "loongarch64" FP_SUFFIX
>>> +
>>> +#define TPOFF_K 0
>>> +
>>> +#define REL_PLT R_LARCH_JUMP_SLOT
>>> +#define REL_COPY R_LARCH_COPY
>>> +#define REL_DTPMOD R_LARCH_TLS_DTPMOD64
>>> +#define REL_DTPOFF R_LARCH_TLS_DTPREL64
>>> +#define REL_TPOFF R_LARCH_TLS_TPREL64
>>> +#define REL_RELATIVE R_LARCH_RELATIVE
>>> +#define REL_SYMBOLIC R_LARCH_64
>>> +
>>> +#define CRTJMP(pc,sp) __asm__ __volatile__( \
>>> + "move $sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
>>> +
>>> +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
>>> + ".hidden " #sym "\n" \
>>> + ".align 8 \n" \
>>> + " la.local $t1, "#sym" \n" \
>>> + " move %0, $t1 \n" \
>>> + : "=r"(*(fp)) : : "memory" )
>>> diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
>>> new file mode 100644
>>> index 00000000..4d5e1885
>>> --- /dev/null
>>> +++ b/arch/loongarch64/syscall_arch.h
>>> @@ -0,0 +1,137 @@
>>> +#define __SYSCALL_LL_E(x) (x)
>>> +#define __SYSCALL_LL_O(x) (x)
>>> +
>>> +#define SYSCALL_CLOBBERLIST \
>>> + "$t0", "$t1", "$t2", "$t3", \
>>> + "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
>>> +
>>> +static inline long __syscall0(long n)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0");
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "=r"(a0)
>>> + : "r"(a7)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall1(long n, long a)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall2(long n, long a, long b)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> + register long a1 __asm__("$a1") = b;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7), "r"(a1)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall3(long n, long a, long b, long c)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> + register long a1 __asm__("$a1") = b;
>>> + register long a2 __asm__("$a2") = c;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7), "r"(a1), "r"(a2)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall4(long n, long a, long b, long c, long d)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> + register long a1 __asm__("$a1") = b;
>>> + register long a2 __asm__("$a2") = c;
>>> + register long a3 __asm__("$a3") = d;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall5(long n, long a, long b, long c, long d, long e)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> + register long a1 __asm__("$a1") = b;
>>> + register long a2 __asm__("$a2") = c;
>>> + register long a3 __asm__("$a3") = d;
>>> + register long a4 __asm__("$a4") = e;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> + register long a1 __asm__("$a1") = b;
>>> + register long a2 __asm__("$a2") = c;
>>> + register long a3 __asm__("$a3") = d;
>>> + register long a4 __asm__("$a4") = e;
>>> + register long a5 __asm__("$a5") = f;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g)
>>> +{
>>> + register long a7 __asm__("$a7") = n;
>>> + register long a0 __asm__("$a0") = a;
>>> + register long a1 __asm__("$a1") = b;
>>> + register long a2 __asm__("$a2") = c;
>>> + register long a3 __asm__("$a3") = d;
>>> + register long a4 __asm__("$a4") = e;
>>> + register long a5 __asm__("$a5") = f;
>>> + register long a6 __asm__("$a6") = g;
>>> +
>>> + __asm__ __volatile__ (
>>> + "syscall 0"
>>> + : "+r"(a0)
>>> + : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6)
>>> + : SYSCALL_CLOBBERLIST);
>>> + return a0;
>>> +}
>>> +
>>> +#define VDSO_USEFUL
>>> +#define VDSO_CGT_SYM "__vdso_clock_gettime"
>>> +#define VDSO_CGT_VER "LINUX_5.10"
>>> +
>>> +#define IPC_64 0
>>> diff --git a/configure b/configure
>>> index 0b966ede..93b06287 100755
>>> --- a/configure
>>> +++ b/configure
>>> @@ -328,6 +328,7 @@ i?86*) ARCH=i386 ;;
>>> x86_64-x32*|x32*|x86_64*x32) ARCH=x32 ;;
>>> x86_64-nt64*) ARCH=nt64 ;;
>>> x86_64*) ARCH=x86_64 ;;
>>> +loongarch64*) ARCH=loongarch64 ;;
>>> m68k*) ARCH=m68k ;;
>>> mips64*|mipsisa64*) ARCH=mips64 ;;
>>> mips*) ARCH=mips ;;
>>> @@ -671,6 +672,20 @@ if test "$ARCH" = "aarch64" ; then
>>> trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
>>> fi
>>>
>>> +if test "$ARCH" = "loongarch64" ; then
>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>> +printf "checking whether compiler support FCSRs... "
>>> +echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>> +if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>> +printf "yes\n"
>>> +else
>>> +printf "no\n"
>>> +CFLAGS_AUTO="$CFLAGS_AUTO -DBROKEN_LOONGARCH_FCSR_ASM"
>>> +fi
>>> +fi
>>> +
>>> if test "$ARCH" = "m68k" ; then
>>> if trycppif "__HAVE_68881__" ; then : ;
>>> elif trycppif "__mcffpu__" ; then SUBARCH="-fp64"
>>> diff --git a/include/elf.h b/include/elf.h
>>> index 23f2c4bc..7114f262 100644
>>> --- a/include/elf.h
>>> +++ b/include/elf.h
>>> @@ -315,7 +315,8 @@ typedef struct {
>>> #define EM_RISCV 243
>>> #define EM_BPF 247
>>> #define EM_CSKY 252
>>> -#define EM_NUM 253
>>> +#define EM_LOONGARCH 258
>>> +#define EM_NUM 259
>>>
>>> #define EM_ALPHA 0x9026
>>>
>>> @@ -699,6 +700,11 @@ typedef struct {
>>> #define NT_MIPS_FP_MODE 0x801
>>> #define NT_MIPS_MSA 0x802
>>> #define NT_VERSION 1
>>> +#define NT_LOONGARCH_CPUCFG 0xa00
>>> +#define NT_LOONGARCH_CSR 0xa01
>>> +#define NT_LOONGARCH_LSX 0xa02
>>> +#define NT_LOONGARCH_LASX 0xa03
>>> +#define NT_LOONGARCH_LBT 0xa04
>>>
>>>
>>>
>>> @@ -3293,6 +3299,102 @@ enum
>>> #define R_RISCV_SET32 56
>>> #define R_RISCV_32_PCREL 57
>>>
>>> +#define EF_LARCH_ABI_MODIFIER_MASK 0x07
>>> +#define EF_LARCH_ABI_SOFT_FLOAT 0x01
>>> +#define EF_LARCH_ABI_SINGLE_FLOAT 0x02
>>> +#define EF_LARCH_ABI_DOUBLE_FLOAT 0x03
>>> +#define EF_LARCH_OBJABI_V1 0x40
>>> +
>>> +#define R_LARCH_NONE 0
>>> +#define R_LARCH_32 1
>>> +#define R_LARCH_64 2
>>> +#define R_LARCH_RELATIVE 3
>>> +#define R_LARCH_COPY 4
>>> +#define R_LARCH_JUMP_SLOT 5
>>> +#define R_LARCH_TLS_DTPMOD32 6
>>> +#define R_LARCH_TLS_DTPMOD64 7
>>> +#define R_LARCH_TLS_DTPREL32 8
>>> +#define R_LARCH_TLS_DTPREL64 9
>>> +#define R_LARCH_TLS_TPREL32 10
>>> +#define R_LARCH_TLS_TPREL64 11
>>> +#define R_LARCH_IRELATIVE 12
>>> +#define R_LARCH_MARK_LA 20
>>> +#define R_LARCH_MARK_PCREL 21
>>> +#define R_LARCH_SOP_PUSH_PCREL 22
>>> +#define R_LARCH_SOP_PUSH_ABSOLUTE 23
>>> +#define R_LARCH_SOP_PUSH_DUP 24
>>> +#define R_LARCH_SOP_PUSH_GPREL 25
>>> +#define R_LARCH_SOP_PUSH_TLS_TPREL 26
>>> +#define R_LARCH_SOP_PUSH_TLS_GOT 27
>>> +#define R_LARCH_SOP_PUSH_TLS_GD 28
>>> +#define R_LARCH_SOP_PUSH_PLT_PCREL 29
>>> +#define R_LARCH_SOP_ASSERT 30
>>> +#define R_LARCH_SOP_NOT 31
>>> +#define R_LARCH_SOP_SUB 32
>>> +#define R_LARCH_SOP_SL 33
>>> +#define R_LARCH_SOP_SR 34
>>> +#define R_LARCH_SOP_ADD 35
>>> +#define R_LARCH_SOP_AND 36
>>> +#define R_LARCH_SOP_IF_ELSE 37
>>> +#define R_LARCH_SOP_POP_32_S_10_5 38
>>> +#define R_LARCH_SOP_POP_32_U_10_12 39
>>> +#define R_LARCH_SOP_POP_32_S_10_12 40
>>> +#define R_LARCH_SOP_POP_32_S_10_16 41
>>> +#define R_LARCH_SOP_POP_32_S_10_16_S2 42
>>> +#define R_LARCH_SOP_POP_32_S_5_20 43
>>> +#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
>>> +#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
>>> +#define R_LARCH_SOP_POP_32_U 46
>>> +#define R_LARCH_ADD8 47
>>> +#define R_LARCH_ADD16 48
>>> +#define R_LARCH_ADD24 49
>>> +#define R_LARCH_ADD32 50
>>> +#define R_LARCH_ADD64 51
>>> +#define R_LARCH_SUB8 52
>>> +#define R_LARCH_SUB16 53
>>> +#define R_LARCH_SUB24 54
>>> +#define R_LARCH_SUB32 55
>>> +#define R_LARCH_SUB64 56
>>> +#define R_LARCH_GNU_VTINHERIT 57
>>> +#define R_LARCH_GNU_VTENTRY 58
>>> +#define R_LARCH_B16 64
>>> +#define R_LARCH_B21 65
>>> +#define R_LARCH_B26 66
>>> +#define R_LARCH_ABS_HI20 67
>>> +#define R_LARCH_ABS_LO12 68
>>> +#define R_LARCH_ABS64_LO20 69
>>> +#define R_LARCH_ABS64_HI12 70
>>> +#define R_LARCH_PCALA_HI20 71
>>> +#define R_LARCH_PCALA_LO12 72
>>> +#define R_LARCH_PCALA64_LO20 73
>>> +#define R_LARCH_PCALA64_HI12 74
>>> +#define R_LARCH_GOT_PC_HI20 75
>>> +#define R_LARCH_GOT_PC_LO12 76
>>> +#define R_LARCH_GOT64_PC_LO20 77
>>> +#define R_LARCH_GOT64_PC_HI12 78
>>> +#define R_LARCH_GOT_HI20 79
>>> +#define R_LARCH_GOT_LO12 80
>>> +#define R_LARCH_GOT64_LO20 81
>>> +#define R_LARCH_GOT64_HI12 82
>>> +#define R_LARCH_TLS_LE_HI20 83
>>> +#define R_LARCH_TLS_LE_LO12 84
>>> +#define R_LARCH_TLS_LE64_LO20 85
>>> +#define R_LARCH_TLS_LE64_HI12 86
>>> +#define R_LARCH_TLS_IE_PC_HI20 87
>>> +#define R_LARCH_TLS_IE_PC_LO12 88
>>> +#define R_LARCH_TLS_IE64_PC_LO20 89
>>> +#define R_LARCH_TLS_IE64_PC_HI12 90
>>> +#define R_LARCH_TLS_IE_HI20 91
>>> +#define R_LARCH_TLS_IE_LO12 92
>>> +#define R_LARCH_TLS_IE64_LO20 93
>>> +#define R_LARCH_TLS_IE64_HI12 94
>>> +#define R_LARCH_TLS_LD_PC_HI20 95
>>> +#define R_LARCH_TLS_LD_HI20 96
>>> +#define R_LARCH_TLS_GD_PC_HI20 97
>>> +#define R_LARCH_TLS_GD_HI20 98
>>> +#define R_LARCH_32_PCREL 99
>>> +#define R_LARCH_RELAX 100
>>> +
>>> #ifdef __cplusplus
>>> }
>>> #endif
>>> diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
>>> new file mode 100644
>>> index 00000000..54064e01
>>> --- /dev/null
>>> +++ b/src/fenv/loongarch64/fenv.S
>>> @@ -0,0 +1,78 @@
>>> +#ifndef __loongarch_soft_float
>>> +
>>> +#ifdef BROKEN_LOONGARCH_FCSR_ASM
>>> +#define FCSR $r0
>>> +#else
>>> +#define FCSR $fcsr0
>>> +#endif
>>> +
>>> +.global feclearexcept
>>> +.type feclearexcept,@function
>>> +feclearexcept:
>>> + li.w $t0, 0x1f0000
>>> + and $a0, $a0, $t0
>>> + movfcsr2gr $t1, FCSR
>>> + andn $t1, $t1, $a0
>>> + movgr2fcsr FCSR, $t1
>>> + li.w $a0, 0
>>> + jr $ra
>>> +
>>> +.global feraiseexcept
>>> +.type feraiseexcept,@function
>>> +feraiseexcept:
>>> + li.w $t0, 0x1f0000
>>> + and $a0, $a0, $t0
>>> + movfcsr2gr $t1, FCSR
>>> + or $t1, $t1, $a0
>>> + movgr2fcsr FCSR, $t1
>>> + li.w $a0, 0
>>> + jr $ra
>>> +
>>> +.global fetestexcept
>>> +.type fetestexcept,@function
>>> +fetestexcept:
>>> + li.w $t0, 0x1f0000
>>> + and $a0, $a0, $t0
>>> + movfcsr2gr $t1, FCSR
>>> + and $a0, $t1, $a0
>>> + jr $ra
>>> +
>>> +.global fegetround
>>> +.type fegetround,@function
>>> +fegetround:
>>> + movfcsr2gr $t0, FCSR
>>> + andi $a0, $t0, 0x300
>>> + jr $ra
>>> +
>>> +.global __fesetround
>>> +.hidden __fesetround
>>> +.type __fesetround,@function
>>> +__fesetround:
>>> + li.w $t0, 0x300
>>> + and $a0, $a0, $t0
>>> + movfcsr2gr $t1, FCSR
>>> + andn $t1, $t1, $t0
>>> + or $t1, $t1, $a0
>>> + movgr2fcsr FCSR, $t1
>>> + li.w $a0, 0
>>> + jr $ra
>>> +
>>> +.global fegetenv
>>> +.type fegetenv,@function
>>> +fegetenv:
>>> + movfcsr2gr $t0, FCSR
>>> + st.w $t0, $a0, 0
>>> + li.w $a0, 0
>>> + jr $ra
>>> +
>>> +.global fesetenv
>>> +.type fesetenv,@function
>>> +fesetenv:
>>> + addi.d $t0, $a0, 1
>>> + beq $t0, $r0, 1f
>>> + ld.w $t0, $a0, 0
>>> +1: movgr2fcsr FCSR, $t0
>>> + li.w $a0, 0
>>> + jr $ra
>>> +
>>> +#endif
>>> diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
>>> new file mode 100644
>>> index 00000000..26fabcdb
>>> --- /dev/null
>>> +++ b/src/ldso/loongarch64/dlsym.s
>>> @@ -0,0 +1,7 @@
>>> +.global dlsym
>>> +.hidden __dlsym
>>> +.type dlsym,@function
>>> +dlsym:
>>> + move $a2, $ra
>>> + la.global $t0, __dlsym
>>> + jr $t0
>>> diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
>>> new file mode 100644
>>> index 00000000..896d2e26
>>> --- /dev/null
>>> +++ b/src/setjmp/loongarch64/longjmp.S
>>> @@ -0,0 +1,32 @@
>>> +.global _longjmp
>>> +.global longjmp
>>> +.type _longjmp,@function
>>> +.type longjmp,@function
>>> +_longjmp:
>>> +longjmp:
>>> + ld.d $ra, $a0, 0
>>> + ld.d $sp, $a0, 8
>>> + ld.d $r21,$a0, 16
>>> + ld.d $fp, $a0, 24
>>> + ld.d $s0, $a0, 32
>>> + ld.d $s1, $a0, 40
>>> + ld.d $s2, $a0, 48
>>> + ld.d $s3, $a0, 56
>>> + ld.d $s4, $a0, 64
>>> + ld.d $s5, $a0, 72
>>> + ld.d $s6, $a0, 80
>>> + ld.d $s7, $a0, 88
>>> + ld.d $s8, $a0, 96
>>> +#ifndef __loongarch_soft_float
>>> + fld.d $fs0, $a0, 104
>>> + fld.d $fs1, $a0, 112
>>> + fld.d $fs2, $a0, 120
>>> + fld.d $fs3, $a0, 128
>>> + fld.d $fs4, $a0, 136
>>> + fld.d $fs5, $a0, 144
>>> + fld.d $fs6, $a0, 152
>>> + fld.d $fs7, $a0, 160
>>> +#endif
>>> + sltui $a0, $a1, 1
>>> + add.d $a0, $a0, $a1
>>> + jr $ra
>>> diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
>>> new file mode 100644
>>> index 00000000..d158a3d2
>>> --- /dev/null
>>> +++ b/src/setjmp/loongarch64/setjmp.S
>>> @@ -0,0 +1,34 @@
>>> +.global __setjmp
>>> +.global _setjmp
>>> +.global setjmp
>>> +.type __setjmp,@function
>>> +.type _setjmp,@function
>>> +.type setjmp,@function
>>> +__setjmp:
>>> +_setjmp:
>>> +setjmp:
>>> + st.d $ra, $a0, 0
>>> + st.d $sp, $a0, 8
>>> + st.d $r21,$a0, 16
>>> + st.d $fp, $a0, 24
>>> + st.d $s0, $a0, 32
>>> + st.d $s1, $a0, 40
>>> + st.d $s2, $a0, 48
>>> + st.d $s3, $a0, 56
>>> + st.d $s4, $a0, 64
>>> + st.d $s5, $a0, 72
>>> + st.d $s6, $a0, 80
>>> + st.d $s7, $a0, 88
>>> + st.d $s8, $a0, 96
>>> +#ifndef __loongarch_soft_float
>>> + fst.d $fs0, $a0, 104
>>> + fst.d $fs1, $a0, 112
>>> + fst.d $fs2, $a0, 120
>>> + fst.d $fs3, $a0, 128
>>> + fst.d $fs4, $a0, 136
>>> + fst.d $fs5, $a0, 144
>>> + fst.d $fs6, $a0, 152
>>> + fst.d $fs7, $a0, 160
>>> +#endif
>>> + move $a0, $zero
>>> + jr $ra
>>> diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
>>> new file mode 100644
>>> index 00000000..f8e6daeb
>>> --- /dev/null
>>> +++ b/src/signal/loongarch64/restore.s
>>> @@ -0,0 +1,10 @@
>>> +.global __restore_rt
>>> +.global __restore
>>> +.hidden __restore_rt
>>> +.hidden __restore
>>> +.type __restore_rt,@function
>>> +.type __restore,@function
>>> +__restore_rt:
>>> +__restore:
>>> + li.w $a7, 139
>>> + syscall 0
>>> diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
>>> new file mode 100644
>>> index 00000000..992ab1a4
>>> --- /dev/null
>>> +++ b/src/signal/loongarch64/sigsetjmp.s
>>> @@ -0,0 +1,25 @@
>>> +.global sigsetjmp
>>> +.global __sigsetjmp
>>> +.type sigsetjmp,@function
>>> +.type __sigsetjmp,@function
>>> +sigsetjmp:
>>> +__sigsetjmp:
>>> + beq $a1, $zero, 1f
>>> + st.d $ra, $a0, 168
>>> + st.d $s0, $a0, 176
>>> + move $s0, $a0
>>> +
>>> + la.global $t0, setjmp
>>> + jirl $ra, $t0, 0
>>> +
>>> + move $a1, $a0 # Return from 'setjmp' or 'longjmp'
>>> + move $a0, $s0
>>> + ld.d $ra, $a0, 168
>>> + ld.d $s0, $a0, 176
>>> +
>>> +.hidden __sigsetjmp_tail
>>> + la.global $t0, __sigsetjmp_tail
>>> + jr $t0
>>> +1:
>>> + la.global $t0, setjmp
>>> + jr $t0
>>> diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
>>> new file mode 100644
>>> index 00000000..ffdd52f1
>>> --- /dev/null
>>> +++ b/src/thread/loongarch64/__set_thread_area.s
>>> @@ -0,0 +1,7 @@
>>> +.global __set_thread_area
>>> +.hidden __set_thread_area
>>> +.type __set_thread_area,@function
>>> +__set_thread_area:
>>> + move $tp, $a0
>>> + move $a0, $zero
>>> + jr $ra
>>> diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
>>> new file mode 100644
>>> index 00000000..1de334af
>>> --- /dev/null
>>> +++ b/src/thread/loongarch64/__unmapself.s
>>> @@ -0,0 +1,7 @@
>>> +.global __unmapself
>>> +.type __unmapself, @function
>>> +__unmapself:
>>> + li.d $a7, 215 # call munmap
>>> + syscall 0
>>> + li.d $a7, 93 # call exit
>>> + syscall 0
>>> diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
>>> new file mode 100644
>>> index 00000000..db9015e6
>>> --- /dev/null
>>> +++ b/src/thread/loongarch64/clone.s
>>> @@ -0,0 +1,28 @@
>>> +#__clone(func, stack, flags, arg, ptid, tls, ctid)
>>> +# a0, a1, a2, a3, a4, a5, a6
>>> +# sys_clone(flags, stack, ptid, ctid, tls)
>>> +# a0, a1, a2, a3, a4
>>> +
>>> +.global __clone
>>> +.hidden __clone
>>> +.type __clone,@function
>>> +__clone:
>>> + # Save function pointer and argument pointer on new thread stack
>>> + addi.d $a1, $a1, -16
>>> + st.d $a0, $a1, 0 # save function pointer
>>> + st.d $a3, $a1, 8 # save argument pointer
>>> + or $a0, $a2, $zero
>>> + or $a2, $a4, $zero
>>> + or $a3, $a6, $zero
>>> + or $a4, $a5, $zero
>>> + ori $a7, $zero, 220
>>> + syscall 0 # call clone
>>> +
>>> + beqz $a0, 1f # whether child process
>>> + jirl $zero, $ra, 0 # parent process return
>>> +1:
>>> + ld.d $t8, $sp, 0 # function pointer
>>> + ld.d $a0, $sp, 8 # argument pointer
>>> + jirl $ra, $t8, 0 # call the user's function
>>> + ori $a7, $zero, 93
>>> + syscall 0 # child process exit
>>> diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
>>> new file mode 100644
>>> index 00000000..0fbc7a47
>>> --- /dev/null
>>> +++ b/src/thread/loongarch64/syscall_cp.s
>>> @@ -0,0 +1,29 @@
>>> +.global __cp_begin
>>> +.hidden __cp_begin
>>> +.global __cp_end
>>> +.hidden __cp_end
>>> +.global __cp_cancel
>>> +.hidden __cp_cancel
>>> +.hidden __cancel
>>> +.global __syscall_cp_asm
>>> +.hidden __syscall_cp_asm
>>> +.type __syscall_cp_asm,@function
>>> +
>>> +__syscall_cp_asm:
>>> +__cp_begin:
>>> + ld.w $a0, $a0, 0
>>> + bnez $a0, __cp_cancel
>>> + move $t8, $a1 # reserve system call number
>>> + move $a0, $a2
>>> + move $a1, $a3
>>> + move $a2, $a4
>>> + move $a3, $a5
>>> + move $a4, $a6
>>> + move $a5, $a7
>>> + move $a7, $t8
>>> + syscall 0
>>> +__cp_end:
>>> + jr $ra
>>> +__cp_cancel:
>>> + la.local $t8, __cancel
>>> + jr $t8
>>> --
>>> 2.37.1
>>>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-16 16:10 ` Rich Felker
@ 2023-11-17 7:20 ` Hongliang Wang
2023-11-17 17:25 ` Rich Felker
0 siblings, 1 reply; 35+ messages in thread
From: Hongliang Wang @ 2023-11-17 7:20 UTC (permalink / raw)
To: musl
在 2023/11/17 上午12:10, Rich Felker 写道:
> On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
>> Hi,
>>
>> Thank you for your suggestion, I have modified the dynamic linker
>> name according to the basic ABI types are specified in the ABI
>> document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
>> as shown in the attachment.
>>
>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>> 0001-add-loongarch64-port-v9.patch are as follows:
>>
>> ---
>> arch/loongarch64/reloc.h | 10 ++++++----
>> configure | 4 +++-
>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>
>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>> index a4482b48..6907de8e 100644
>> --- a/arch/loongarch64/reloc.h
>> +++ b/arch/loongarch64/reloc.h
>> @@ -1,7 +1,9 @@
>> -#ifdef __loongarch_soft_float
>> -#define FP_SUFFIX "-sf"
>> -#else
>> -#define FP_SUFFIX ""
>> +#if defined __loongarch_double_float
>> +#define FP_SUFFIX "-lp64d"
>> +#elif defined __loongarch_single_float
>> +#define FP_SUFFIX "-lp64f"
>> +#elif defined __loongarch_soft_float
>> +#define FP_SUFFIX "-lp64s"
>> #endif
>>
>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>> diff --git a/configure b/configure
>> index 55d179f1..93b06287 100755
>> --- a/configure
>> +++ b/configure
>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
>> fi
>>
>> if test "$ARCH" = "loongarch64" ; then
>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>> printf "checking whether compiler support FCSRs... "
>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>> --
>>
>> Please review again, and point them out if any questions need to be
>> modified, thanks.
>
> Why are you changing the ABI name for the existing one to something
> different rather than just adding the missing ones, and doing it with
> a name that's less descriptive ("-sf" is widely recognized as a
> softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
> part to each one that does not seem to be part of distinguishing the
> float ABI?
>
> Rich
>
We change the ABI name based on the LoongArch ELF ABI specification,
which can be seen:
https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
(Table 7. Base ABI Types.)
The specification defines lp64d, lp64s, lp64f:
lp64d indicates uses 64-bit FPRs, d indicates double float.
lp64s indicates uses 32-bit FPRs, s indicates single float.
lp64f indicates uses no FPRs, f indicates soft float.
The specification does not define sf, so I removed it.
The define in musl is also consistent with gcc.
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-17 7:20 ` Hongliang Wang
@ 2023-11-17 17:25 ` Rich Felker
2023-11-18 4:19 ` Jingyun Hua
0 siblings, 1 reply; 35+ messages in thread
From: Rich Felker @ 2023-11-17 17:25 UTC (permalink / raw)
To: Hongliang Wang; +Cc: musl
On Fri, Nov 17, 2023 at 03:20:58PM +0800, Hongliang Wang wrote:
>
>
> 在 2023/11/17 上午12:10, Rich Felker 写道:
> >On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
> >>Hi,
> >>
> >>Thank you for your suggestion, I have modified the dynamic linker
> >>name according to the basic ABI types are specified in the ABI
> >>document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
> >>as shown in the attachment.
> >>
> >>Based on 0001-add-loongarch64-port-v8.patch,the modifications for
> >>0001-add-loongarch64-port-v9.patch are as follows:
> >>
> >>---
> >> arch/loongarch64/reloc.h | 10 ++++++----
> >> configure | 4 +++-
> >> 2 files changed, 9 insertions(+), 5 deletions(-)
> >>
> >>diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
> >>index a4482b48..6907de8e 100644
> >>--- a/arch/loongarch64/reloc.h
> >>+++ b/arch/loongarch64/reloc.h
> >>@@ -1,7 +1,9 @@
> >>-#ifdef __loongarch_soft_float
> >>-#define FP_SUFFIX "-sf"
> >>-#else
> >>-#define FP_SUFFIX ""
> >>+#if defined __loongarch_double_float
> >>+#define FP_SUFFIX "-lp64d"
> >>+#elif defined __loongarch_single_float
> >>+#define FP_SUFFIX "-lp64f"
> >>+#elif defined __loongarch_soft_float
> >>+#define FP_SUFFIX "-lp64s"
> >> #endif
> >>
> >> #define LDSO_ARCH "loongarch64" FP_SUFFIX
> >>diff --git a/configure b/configure
> >>index 55d179f1..93b06287 100755
> >>--- a/configure
> >>+++ b/configure
> >>@@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
> >> fi
> >>
> >> if test "$ARCH" = "loongarch64" ; then
> >>-trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
> >>+trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
> >>+trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
> >>+trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
> >> printf "checking whether compiler support FCSRs... "
> >> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
> >> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
> >>--
> >>
> >>Please review again, and point them out if any questions need to be
> >>modified, thanks.
> >
> >Why are you changing the ABI name for the existing one to something
> >different rather than just adding the missing ones, and doing it with
> >a name that's less descriptive ("-sf" is widely recognized as a
> >softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
> >part to each one that does not seem to be part of distinguishing the
> >float ABI?
> >
> >Rich
> >
> We change the ABI name based on the LoongArch ELF ABI specification,
> which can be seen:
> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
> (Table 7. Base ABI Types.)
> The specification defines lp64d, lp64s, lp64f:
> lp64d indicates uses 64-bit FPRs, d indicates double float.
> lp64s indicates uses 32-bit FPRs, s indicates single float.
> lp64f indicates uses no FPRs, f indicates soft float.
>
> The specification does not define sf, so I removed it.
> The define in musl is also consistent with gcc.
Please use naming consistent with what we do for other archs in musl
for a proposal to be included in musl. This means:
- Subarch should be empty for the default (I assume that means
hardware floating point with full double precision) ABI that you
expect most Linux-compatible systems to be using.
- Don't include extraneous stuff like "lp64" that's universal to the
architecture in the subarch name. There isn't a need to align these
names with anything outside of musl.
Please stick with what has already been approved, with changes
well-motivated -- in this case, that means just proposing a name for
the single-precision subarch. My preference would be to use "-sp" like
we did for riscv64.
The reason this has taken so long to get merged is that *every* time I
set aside some time to apply it, there are new gratuitous changes,
many of which seem to be motivated by style musl does not follow. I'd
like to merge precisely what I reviewed last time, with the gratuitous
changes I found reverted, plus the new subarch/ldso name for single
precision. Does this sound good?
Rich
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-17 17:25 ` Rich Felker
@ 2023-11-18 4:19 ` Jingyun Hua
2023-11-20 6:11 ` Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Jingyun Hua @ 2023-11-18 4:19 UTC (permalink / raw)
To: musl
Hi,Rich
I'm sorry for wasting everyone's time with my suggestion about the wrong
dynamic connector name, and thank you for always taking the time to
review the code for the musl LoongArch port.
I carefully looked at the musl code and documentation again, LoongArch
should follow the musl style and use naming consistent with other archs
naming.
and I saw that gcc also submitted a modification for this:
https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637113.html
This may be a good solution. After waiting for the modifications of gcc
to be merged, we can add "-sp" to __loongarch_single_float based on the
musl v8 patch, and at the same time, gcc will backport the
modifications to gcc-12 and gcc-13.
Thank you very much.
Regards,
Jingyun Hua
On 11/18/23 1:25 AM, Rich Felker wrote:
> On Fri, Nov 17, 2023 at 03:20:58PM +0800, Hongliang Wang wrote:
>>
>>
>> 在 2023/11/17 上午12:10, Rich Felker 写道:
>>> On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
>>>> Hi,
>>>>
>>>> Thank you for your suggestion, I have modified the dynamic linker
>>>> name according to the basic ABI types are specified in the ABI
>>>> document of the LoongArch, and post 0001-add-loongarch64-port-v9.patch,
>>>> as shown in the attachment.
>>>>
>>>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>>>> 0001-add-loongarch64-port-v9.patch are as follows:
>>>>
>>>> ---
>>>> arch/loongarch64/reloc.h | 10 ++++++----
>>>> configure | 4 +++-
>>>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>>>
>>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>>> index a4482b48..6907de8e 100644
>>>> --- a/arch/loongarch64/reloc.h
>>>> +++ b/arch/loongarch64/reloc.h
>>>> @@ -1,7 +1,9 @@
>>>> -#ifdef __loongarch_soft_float
>>>> -#define FP_SUFFIX "-sf"
>>>> -#else
>>>> -#define FP_SUFFIX ""
>>>> +#if defined __loongarch_double_float
>>>> +#define FP_SUFFIX "-lp64d"
>>>> +#elif defined __loongarch_single_float
>>>> +#define FP_SUFFIX "-lp64f"
>>>> +#elif defined __loongarch_soft_float
>>>> +#define FP_SUFFIX "-lp64s"
>>>> #endif
>>>>
>>>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>>>> diff --git a/configure b/configure
>>>> index 55d179f1..93b06287 100755
>>>> --- a/configure
>>>> +++ b/configure
>>>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" && SUBARCH=${SUBARCH}_be
>>>> fi
>>>>
>>>> if test "$ARCH" = "loongarch64" ; then
>>>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>>> printf "checking whether compiler support FCSRs... "
>>>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>>> --
>>>>
>>>> Please review again, and point them out if any questions need to be
>>>> modified, thanks.
>>>
>>> Why are you changing the ABI name for the existing one to something
>>> different rather than just adding the missing ones, and doing it with
>>> a name that's less descriptive ("-sf" is widely recognized as a
>>> softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
>>> part to each one that does not seem to be part of distinguishing the
>>> float ABI?
>>>
>>> Rich
>>>
>> We change the ABI name based on the LoongArch ELF ABI specification,
>> which can be seen:
>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>> (Table 7. Base ABI Types.)
>> The specification defines lp64d, lp64s, lp64f:
>> lp64d indicates uses 64-bit FPRs, d indicates double float.
>> lp64s indicates uses 32-bit FPRs, s indicates single float.
>> lp64f indicates uses no FPRs, f indicates soft float.
>>
>> The specification does not define sf, so I removed it.
>> The define in musl is also consistent with gcc.
>
> Please use naming consistent with what we do for other archs in musl
> for a proposal to be included in musl. This means:
>
> - Subarch should be empty for the default (I assume that means
> hardware floating point with full double precision) ABI that you
> expect most Linux-compatible systems to be using.
>
> - Don't include extraneous stuff like "lp64" that's universal to the
> architecture in the subarch name. There isn't a need to align these
> names with anything outside of musl.
>
> Please stick with what has already been approved, with changes
> well-motivated -- in this case, that means just proposing a name for
> the single-precision subarch. My preference would be to use "-sp" like
> we did for riscv64.
>
> The reason this has taken so long to get merged is that *every* time I
> set aside some time to apply it, there are new gratuitous changes,
> many of which seem to be motivated by style musl does not follow. I'd
> like to merge precisely what I reviewed last time, with the gratuitous
> changes I found reverted, plus the new subarch/ldso name for single
> precision. Does this sound good?
>
> Rich
>
--
Jingyun Hua
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v9.
2023-11-18 4:19 ` Jingyun Hua
@ 2023-11-20 6:11 ` Hongliang Wang
2023-12-08 8:23 ` [musl] Re:[musl] add loongarch64 port v8 Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Hongliang Wang @ 2023-11-20 6:11 UTC (permalink / raw)
To: musl
Hi, Rich
The patch for modify musl dynamic linker has been merged to gcc,
and also backported to gcc-12 and gcc-13.
The 0001-add-loongarch64-port-v8.patch is still as the latest patch.
Thank you very much.
Hongliang Wang.
在 2023/11/18 下午12:19, Jingyun Hua 写道:
> Hi,Rich
>
> I'm sorry for wasting everyone's time with my suggestion about the wrong
> dynamic connector name, and thank you for always taking the time to
> review the code for the musl LoongArch port.
>
> I carefully looked at the musl code and documentation again, LoongArch
> should follow the musl style and use naming consistent with other archs
> naming.
>
> and I saw that gcc also submitted a modification for this:
> https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637113.html
>
> This may be a good solution. After waiting for the modifications of gcc
> to be merged, we can add "-sp" to __loongarch_single_float based on the
> musl v8 patch, and at the same time, gcc will backport the
> modifications to gcc-12 and gcc-13.
>
> Thank you very much.
>
> Regards,
> Jingyun Hua
>
> On 11/18/23 1:25 AM, Rich Felker wrote:
>> On Fri, Nov 17, 2023 at 03:20:58PM +0800, Hongliang Wang wrote:
>>>
>>>
>>> 在 2023/11/17 上午12:10, Rich Felker 写道:
>>>> On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
>>>>> Hi,
>>>>>
>>>>> Thank you for your suggestion, I have modified the dynamic linker
>>>>> name according to the basic ABI types are specified in the ABI
>>>>> document of the LoongArch, and post
>>>>> 0001-add-loongarch64-port-v9.patch,
>>>>> as shown in the attachment.
>>>>>
>>>>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>>>>> 0001-add-loongarch64-port-v9.patch are as follows:
>>>>>
>>>>> ---
>>>>> arch/loongarch64/reloc.h | 10 ++++++----
>>>>> configure | 4 +++-
>>>>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>>>>
>>>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>>>> index a4482b48..6907de8e 100644
>>>>> --- a/arch/loongarch64/reloc.h
>>>>> +++ b/arch/loongarch64/reloc.h
>>>>> @@ -1,7 +1,9 @@
>>>>> -#ifdef __loongarch_soft_float
>>>>> -#define FP_SUFFIX "-sf"
>>>>> -#else
>>>>> -#define FP_SUFFIX ""
>>>>> +#if defined __loongarch_double_float
>>>>> +#define FP_SUFFIX "-lp64d"
>>>>> +#elif defined __loongarch_single_float
>>>>> +#define FP_SUFFIX "-lp64f"
>>>>> +#elif defined __loongarch_soft_float
>>>>> +#define FP_SUFFIX "-lp64s"
>>>>> #endif
>>>>>
>>>>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>>>>> diff --git a/configure b/configure
>>>>> index 55d179f1..93b06287 100755
>>>>> --- a/configure
>>>>> +++ b/configure
>>>>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" &&
>>>>> SUBARCH=${SUBARCH}_be
>>>>> fi
>>>>>
>>>>> if test "$ARCH" = "loongarch64" ; then
>>>>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>>>> printf "checking whether compiler support FCSRs... "
>>>>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>>>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>>>> --
>>>>>
>>>>> Please review again, and point them out if any questions need to be
>>>>> modified, thanks.
>>>>
>>>> Why are you changing the ABI name for the existing one to something
>>>> different rather than just adding the missing ones, and doing it with
>>>> a name that's less descriptive ("-sf" is widely recognized as a
>>>> softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
>>>> part to each one that does not seem to be part of distinguishing the
>>>> float ABI?
>>>>
>>>> Rich
>>>>
>>> We change the ABI name based on the LoongArch ELF ABI specification,
>>> which can be seen:
>>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>>>
>>> (Table 7. Base ABI Types.)
>>> The specification defines lp64d, lp64s, lp64f:
>>> lp64d indicates uses 64-bit FPRs, d indicates double float.
>>> lp64s indicates uses 32-bit FPRs, s indicates single float.
>>> lp64f indicates uses no FPRs, f indicates soft float.
>>>
>>> The specification does not define sf, so I removed it.
>>> The define in musl is also consistent with gcc.
>>
>> Please use naming consistent with what we do for other archs in musl
>> for a proposal to be included in musl. This means:
>>
>> - Subarch should be empty for the default (I assume that means
>> hardware floating point with full double precision) ABI that you
>> expect most Linux-compatible systems to be using.
>>
>> - Don't include extraneous stuff like "lp64" that's universal to the
>> architecture in the subarch name. There isn't a need to align these
>> names with anything outside of musl.
>>
>> Please stick with what has already been approved, with changes
>> well-motivated -- in this case, that means just proposing a name for
>> the single-precision subarch. My preference would be to use "-sp" like
>> we did for riscv64.
>>
>> The reason this has taken so long to get merged is that *every* time I
>> set aside some time to apply it, there are new gratuitous changes,
>> many of which seem to be motivated by style musl does not follow. I'd
>> like to merge precisely what I reviewed last time, with the gratuitous
>> changes I found reverted, plus the new subarch/ldso name for single
>> precision. Does this sound good?
>>
>> Rich
>>
>
^ permalink raw reply [flat|nested] 35+ messages in thread
* [musl] Re:[musl] add loongarch64 port v8.
2023-11-20 6:11 ` Hongliang Wang
@ 2023-12-08 8:23 ` Hongliang Wang
2023-12-18 7:44 ` Jingyun Hua
2024-01-29 1:26 ` [musl] " Hongliang Wang
0 siblings, 2 replies; 35+ messages in thread
From: Hongliang Wang @ 2023-12-08 8:23 UTC (permalink / raw)
To: musl
Hi, Rich
I'm sorry to trouble you again. we know that you are taking the
time to review the code for Loongarch port. because there are
multiple applications rely on musl, and recently many people ask
us about the progress of musl support LoongArch, they are waiting
for it for next work.
So we would like to make bold to ask you about the approximate time
and plan for merge Loongarch port?
Thank you very much.
Regards,
Hongliang Wang
在 2023/11/20 下午2:11, Hongliang Wang 写道:
> Hi, Rich
>
> The patch for modify musl dynamic linker has been merged to gcc,
> and also backported to gcc-12 and gcc-13.
>
> The 0001-add-loongarch64-port-v8.patch is still as the latest patch.
>
> Thank you very much.
>
> Hongliang Wang.
>
>
> 在 2023/11/18 下午12:19, Jingyun Hua 写道:
>> Hi,Rich
>>
>> I'm sorry for wasting everyone's time with my suggestion about the wrong
>> dynamic connector name, and thank you for always taking the time to
>> review the code for the musl LoongArch port.
>>
>> I carefully looked at the musl code and documentation again, LoongArch
>> should follow the musl style and use naming consistent with other archs
>> naming.
>>
>> and I saw that gcc also submitted a modification for this:
>> https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637113.html
>>
>> This may be a good solution. After waiting for the modifications of gcc
>> to be merged, we can add "-sp" to __loongarch_single_float based on the
>> musl v8 patch, and at the same time, gcc will backport the
>> modifications to gcc-12 and gcc-13.
>>
>> Thank you very much.
>>
>> Regards,
>> Jingyun Hua
>>
>> On 11/18/23 1:25 AM, Rich Felker wrote:
>>> On Fri, Nov 17, 2023 at 03:20:58PM +0800, Hongliang Wang wrote:
>>>>
>>>>
>>>> 在 2023/11/17 上午12:10, Rich Felker 写道:
>>>>> On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
>>>>>> Hi,
>>>>>>
>>>>>> Thank you for your suggestion, I have modified the dynamic linker
>>>>>> name according to the basic ABI types are specified in the ABI
>>>>>> document of the LoongArch, and post
>>>>>> 0001-add-loongarch64-port-v9.patch,
>>>>>> as shown in the attachment.
>>>>>>
>>>>>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>>>>>> 0001-add-loongarch64-port-v9.patch are as follows:
>>>>>>
>>>>>> ---
>>>>>> arch/loongarch64/reloc.h | 10 ++++++----
>>>>>> configure | 4 +++-
>>>>>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>>>>>
>>>>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>>>>> index a4482b48..6907de8e 100644
>>>>>> --- a/arch/loongarch64/reloc.h
>>>>>> +++ b/arch/loongarch64/reloc.h
>>>>>> @@ -1,7 +1,9 @@
>>>>>> -#ifdef __loongarch_soft_float
>>>>>> -#define FP_SUFFIX "-sf"
>>>>>> -#else
>>>>>> -#define FP_SUFFIX ""
>>>>>> +#if defined __loongarch_double_float
>>>>>> +#define FP_SUFFIX "-lp64d"
>>>>>> +#elif defined __loongarch_single_float
>>>>>> +#define FP_SUFFIX "-lp64f"
>>>>>> +#elif defined __loongarch_soft_float
>>>>>> +#define FP_SUFFIX "-lp64s"
>>>>>> #endif
>>>>>>
>>>>>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>>>>>> diff --git a/configure b/configure
>>>>>> index 55d179f1..93b06287 100755
>>>>>> --- a/configure
>>>>>> +++ b/configure
>>>>>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" &&
>>>>>> SUBARCH=${SUBARCH}_be
>>>>>> fi
>>>>>>
>>>>>> if test "$ARCH" = "loongarch64" ; then
>>>>>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>>>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>>>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>>>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>>>>> printf "checking whether compiler support FCSRs... "
>>>>>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>>>>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>>>>> --
>>>>>>
>>>>>> Please review again, and point them out if any questions need to be
>>>>>> modified, thanks.
>>>>>
>>>>> Why are you changing the ABI name for the existing one to something
>>>>> different rather than just adding the missing ones, and doing it with
>>>>> a name that's less descriptive ("-sf" is widely recognized as a
>>>>> softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
>>>>> part to each one that does not seem to be part of distinguishing the
>>>>> float ABI?
>>>>>
>>>>> Rich
>>>>>
>>>> We change the ABI name based on the LoongArch ELF ABI specification,
>>>> which can be seen:
>>>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>>>>
>>>> (Table 7. Base ABI Types.)
>>>> The specification defines lp64d, lp64s, lp64f:
>>>> lp64d indicates uses 64-bit FPRs, d indicates double float.
>>>> lp64s indicates uses 32-bit FPRs, s indicates single float.
>>>> lp64f indicates uses no FPRs, f indicates soft float.
>>>>
>>>> The specification does not define sf, so I removed it.
>>>> The define in musl is also consistent with gcc.
>>>
>>> Please use naming consistent with what we do for other archs in musl
>>> for a proposal to be included in musl. This means:
>>>
>>> - Subarch should be empty for the default (I assume that means
>>> hardware floating point with full double precision) ABI that you
>>> expect most Linux-compatible systems to be using.
>>>
>>> - Don't include extraneous stuff like "lp64" that's universal to the
>>> architecture in the subarch name. There isn't a need to align these
>>> names with anything outside of musl.
>>>
>>> Please stick with what has already been approved, with changes
>>> well-motivated -- in this case, that means just proposing a name for
>>> the single-precision subarch. My preference would be to use "-sp" like
>>> we did for riscv64.
>>>
>>> The reason this has taken so long to get merged is that *every* time I
>>> set aside some time to apply it, there are new gratuitous changes,
>>> many of which seem to be motivated by style musl does not follow. I'd
>>> like to merge precisely what I reviewed last time, with the gratuitous
>>> changes I found reverted, plus the new subarch/ldso name for single
>>> precision. Does this sound good?
>>>
>>> Rich
>>>
>>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] Re:[musl] add loongarch64 port v8.
2023-12-08 8:23 ` [musl] Re:[musl] add loongarch64 port v8 Hongliang Wang
@ 2023-12-18 7:44 ` Jingyun Hua
2024-01-29 1:26 ` [musl] " Hongliang Wang
1 sibling, 0 replies; 35+ messages in thread
From: Jingyun Hua @ 2023-12-18 7:44 UTC (permalink / raw)
To: musl
Hi,
I had to ask again about the progress of the LoongArch64 patch, as I
have been working on adding LoongArch64 support to Alpine Linux
recently, see：
https://gitlab.alpinelinux.org/alpine/tsc/-/issues/72
Currently, we are waiting for the LoongArch64 patch to be merged to
musl, and then continue the upstream porting of Alpine Linux.
Thanks!
Regards,
Jingyun Hua
On 12/8/23 4:23 PM, Hongliang Wang wrote:
> Hi, Rich
>
> I'm sorry to trouble you again. we know that you are taking the
> time to review the code for Loongarch port. because there are
> multiple applications rely on musl, and recently many people ask
> us about the progress of musl support LoongArch, they are waiting
> for it for next work.
>
> So we would like to make bold to ask you about the approximate time
> and plan for merge Loongarch port?
>
> Thank you very much.
>
> Regards,
> Hongliang Wang
>
> 在 2023/11/20 下午2:11, Hongliang Wang 写道:
>> Hi, Rich
>>
>> The patch for modify musl dynamic linker has been merged to gcc,
>> and also backported to gcc-12 and gcc-13.
>>
>> The 0001-add-loongarch64-port-v8.patch is still as the latest patch.
>>
>> Thank you very much.
>>
>> Hongliang Wang.
>>
>>
>> 在 2023/11/18 下午12:19, Jingyun Hua 写道:
>>> Hi,Rich
>>>
>>> I'm sorry for wasting everyone's time with my suggestion about the wrong
>>> dynamic connector name, and thank you for always taking the time to
>>> review the code for the musl LoongArch port.
>>>
>>> I carefully looked at the musl code and documentation again, LoongArch
>>> should follow the musl style and use naming consistent with other archs
>>> naming.
>>>
>>> and I saw that gcc also submitted a modification for this:
>>> https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637113.html
>>>
>>> This may be a good solution. After waiting for the modifications of gcc
>>> to be merged, we can add "-sp" to __loongarch_single_float based on the
>>> musl v8 patch, and at the same time, gcc will backport the
>>> modifications to gcc-12 and gcc-13.
>>>
>>> Thank you very much.
>>>
>>> Regards,
>>> Jingyun Hua
>>>
>>> On 11/18/23 1:25 AM, Rich Felker wrote:
>>>> On Fri, Nov 17, 2023 at 03:20:58PM +0800, Hongliang Wang wrote:
>>>>>
>>>>>
>>>>> 在 2023/11/17 上午12:10, Rich Felker 写道:
>>>>>> On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> Thank you for your suggestion, I have modified the dynamic linker
>>>>>>> name according to the basic ABI types are specified in the ABI
>>>>>>> document of the LoongArch, and post
>>>>>>> 0001-add-loongarch64-port-v9.patch,
>>>>>>> as shown in the attachment.
>>>>>>>
>>>>>>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>>>>>>> 0001-add-loongarch64-port-v9.patch are as follows:
>>>>>>>
>>>>>>> ---
>>>>>>> arch/loongarch64/reloc.h | 10 ++++++----
>>>>>>> configure | 4 +++-
>>>>>>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>>>>>>
>>>>>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>>>>>> index a4482b48..6907de8e 100644
>>>>>>> --- a/arch/loongarch64/reloc.h
>>>>>>> +++ b/arch/loongarch64/reloc.h
>>>>>>> @@ -1,7 +1,9 @@
>>>>>>> -#ifdef __loongarch_soft_float
>>>>>>> -#define FP_SUFFIX "-sf"
>>>>>>> -#else
>>>>>>> -#define FP_SUFFIX ""
>>>>>>> +#if defined __loongarch_double_float
>>>>>>> +#define FP_SUFFIX "-lp64d"
>>>>>>> +#elif defined __loongarch_single_float
>>>>>>> +#define FP_SUFFIX "-lp64f"
>>>>>>> +#elif defined __loongarch_soft_float
>>>>>>> +#define FP_SUFFIX "-lp64s"
>>>>>>> #endif
>>>>>>>
>>>>>>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>>>>>>> diff --git a/configure b/configure
>>>>>>> index 55d179f1..93b06287 100755
>>>>>>> --- a/configure
>>>>>>> +++ b/configure
>>>>>>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" &&
>>>>>>> SUBARCH=${SUBARCH}_be
>>>>>>> fi
>>>>>>>
>>>>>>> if test "$ARCH" = "loongarch64" ; then
>>>>>>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>>>>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>>>>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>>>>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>>>>>> printf "checking whether compiler support FCSRs... "
>>>>>>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>>>>>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>>>>>> --
>>>>>>>
>>>>>>> Please review again, and point them out if any questions need to be
>>>>>>> modified, thanks.
>>>>>>
>>>>>> Why are you changing the ABI name for the existing one to something
>>>>>> different rather than just adding the missing ones, and doing it with
>>>>>> a name that's less descriptive ("-sf" is widely recognized as a
>>>>>> softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
>>>>>> part to each one that does not seem to be part of distinguishing the
>>>>>> float ABI?
>>>>>>
>>>>>> Rich
>>>>>>
>>>>> We change the ABI name based on the LoongArch ELF ABI specification,
>>>>> which can be seen:
>>>>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>>>>>
>>>>> (Table 7. Base ABI Types.)
>>>>> The specification defines lp64d, lp64s, lp64f:
>>>>> lp64d indicates uses 64-bit FPRs, d indicates double float.
>>>>> lp64s indicates uses 32-bit FPRs, s indicates single float.
>>>>> lp64f indicates uses no FPRs, f indicates soft float.
>>>>>
>>>>> The specification does not define sf, so I removed it.
>>>>> The define in musl is also consistent with gcc.
>>>>
>>>> Please use naming consistent with what we do for other archs in musl
>>>> for a proposal to be included in musl. This means:
>>>>
>>>> - Subarch should be empty for the default (I assume that means
>>>> hardware floating point with full double precision) ABI that you
>>>> expect most Linux-compatible systems to be using.
>>>>
>>>> - Don't include extraneous stuff like "lp64" that's universal to the
>>>> architecture in the subarch name. There isn't a need to align these
>>>> names with anything outside of musl.
>>>>
>>>> Please stick with what has already been approved, with changes
>>>> well-motivated -- in this case, that means just proposing a name for
>>>> the single-precision subarch. My preference would be to use "-sp" like
>>>> we did for riscv64.
>>>>
>>>> The reason this has taken so long to get merged is that *every* time I
>>>> set aside some time to apply it, there are new gratuitous changes,
>>>> many of which seem to be motivated by style musl does not follow. I'd
>>>> like to merge precisely what I reviewed last time, with the gratuitous
>>>> changes I found reverted, plus the new subarch/ldso name for single
>>>> precision. Does this sound good?
>>>>
>>>> Rich
>>>>
>>>
--
Jingyun Hua
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v8.
2023-12-08 8:23 ` [musl] Re:[musl] add loongarch64 port v8 Hongliang Wang
2023-12-18 7:44 ` Jingyun Hua
@ 2024-01-29 1:26 ` Hongliang Wang
2024-01-29 3:14 ` Rich Felker
1 sibling, 1 reply; 35+ messages in thread
From: Hongliang Wang @ 2024-01-29 1:26 UTC (permalink / raw)
To: musl
Hi, Rich
I'm sorry to ask again about the progress of the LoongArch64 patch.
The Alpine support LoongArch porting has stopped and waiting for musl
for a long time. see alpine TSC:
https://gitlab.alpinelinux.org/alpine/tsc/-/issues/72
So we would like to ask about the approximate time and plan for patch
merge? Is it possible to be merged in the near future?
Thank you very much.
Regards,
Hongliang Wang
在 2023/12/8 下午4:23, Hongliang Wang 写道:
> Hi, Rich
>
> I'm sorry to trouble you again. we know that you are taking the
> time to review the code for Loongarch port. because there are
> multiple applications rely on musl, and recently many people ask
> us about the progress of musl support LoongArch, they are waiting
> for it for next work.
>
> So we would like to make bold to ask you about the approximate time
> and plan for merge Loongarch port?
>
> Thank you very much.
>
> Regards,
> Hongliang Wang
>
> 在 2023/11/20 下午2:11, Hongliang Wang 写道:
>> Hi, Rich
>>
>> The patch for modify musl dynamic linker has been merged to gcc,
>> and also backported to gcc-12 and gcc-13.
>>
>> The 0001-add-loongarch64-port-v8.patch is still as the latest patch.
>>
>> Thank you very much.
>>
>> Hongliang Wang.
>>
>>
>> 在 2023/11/18 下午12:19, Jingyun Hua 写道:
>>> Hi,Rich
>>>
>>> I'm sorry for wasting everyone's time with my suggestion about the wrong
>>> dynamic connector name, and thank you for always taking the time to
>>> review the code for the musl LoongArch port.
>>>
>>> I carefully looked at the musl code and documentation again, LoongArch
>>> should follow the musl style and use naming consistent with other archs
>>> naming.
>>>
>>> and I saw that gcc also submitted a modification for this:
>>> https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637113.html
>>>
>>> This may be a good solution. After waiting for the modifications of gcc
>>> to be merged, we can add "-sp" to __loongarch_single_float based on the
>>> musl v8 patch, and at the same time, gcc will backport the
>>> modifications to gcc-12 and gcc-13.
>>>
>>> Thank you very much.
>>>
>>> Regards,
>>> Jingyun Hua
>>>
>>> On 11/18/23 1:25 AM, Rich Felker wrote:
>>>> On Fri, Nov 17, 2023 at 03:20:58PM +0800, Hongliang Wang wrote:
>>>>>
>>>>>
>>>>> 在 2023/11/17 上午12:10, Rich Felker 写道:
>>>>>> On Thu, Nov 16, 2023 at 10:54:44AM +0800, Hongliang Wang wrote:
>>>>>>> Hi,
>>>>>>>
>>>>>>> Thank you for your suggestion, I have modified the dynamic linker
>>>>>>> name according to the basic ABI types are specified in the ABI
>>>>>>> document of the LoongArch, and post
>>>>>>> 0001-add-loongarch64-port-v9.patch,
>>>>>>> as shown in the attachment.
>>>>>>>
>>>>>>> Based on 0001-add-loongarch64-port-v8.patch,the modifications for
>>>>>>> 0001-add-loongarch64-port-v9.patch are as follows:
>>>>>>>
>>>>>>> ---
>>>>>>> arch/loongarch64/reloc.h | 10 ++++++----
>>>>>>> configure | 4 +++-
>>>>>>> 2 files changed, 9 insertions(+), 5 deletions(-)
>>>>>>>
>>>>>>> diff --git a/arch/loongarch64/reloc.h b/arch/loongarch64/reloc.h
>>>>>>> index a4482b48..6907de8e 100644
>>>>>>> --- a/arch/loongarch64/reloc.h
>>>>>>> +++ b/arch/loongarch64/reloc.h
>>>>>>> @@ -1,7 +1,9 @@
>>>>>>> -#ifdef __loongarch_soft_float
>>>>>>> -#define FP_SUFFIX "-sf"
>>>>>>> -#else
>>>>>>> -#define FP_SUFFIX ""
>>>>>>> +#if defined __loongarch_double_float
>>>>>>> +#define FP_SUFFIX "-lp64d"
>>>>>>> +#elif defined __loongarch_single_float
>>>>>>> +#define FP_SUFFIX "-lp64f"
>>>>>>> +#elif defined __loongarch_soft_float
>>>>>>> +#define FP_SUFFIX "-lp64s"
>>>>>>> #endif
>>>>>>>
>>>>>>> #define LDSO_ARCH "loongarch64" FP_SUFFIX
>>>>>>> diff --git a/configure b/configure
>>>>>>> index 55d179f1..93b06287 100755
>>>>>>> --- a/configure
>>>>>>> +++ b/configure
>>>>>>> @@ -673,7 +673,9 @@ trycppif __AARCH64EB__ "$t" &&
>>>>>>> SUBARCH=${SUBARCH}_be
>>>>>>> fi
>>>>>>>
>>>>>>> if test "$ARCH" = "loongarch64" ; then
>>>>>>> -trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-sf
>>>>>>> +trycppif __loongarch_double_float "$t" && SUBARCH=${SUBARCH}-lp64d
>>>>>>> +trycppif __loongarch_single_float "$t" && SUBARCH=${SUBARCH}-lp64f
>>>>>>> +trycppif __loongarch_soft_float "$t" && SUBARCH=${SUBARCH}-lp64s
>>>>>>> printf "checking whether compiler support FCSRs... "
>>>>>>> echo "__asm__(\"movfcsr2gr \$t0,\$fcsr0\");" > "$tmpc"
>>>>>>> if $CC -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
>>>>>>> --
>>>>>>>
>>>>>>> Please review again, and point them out if any questions need to be
>>>>>>> modified, thanks.
>>>>>>
>>>>>> Why are you changing the ABI name for the existing one to something
>>>>>> different rather than just adding the missing ones, and doing it with
>>>>>> a name that's less descriptive ("-sf" is widely recognized as a
>>>>>> softfloat suffix, -lp64s not so much) and adding a redundant "lp64"
>>>>>> part to each one that does not seem to be part of distinguishing the
>>>>>> float ABI?
>>>>>>
>>>>>> Rich
>>>>>>
>>>>> We change the ABI name based on the LoongArch ELF ABI specification,
>>>>> which can be seen:
>>>>> https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
>>>>>
>>>>> (Table 7. Base ABI Types.)
>>>>> The specification defines lp64d, lp64s, lp64f:
>>>>> lp64d indicates uses 64-bit FPRs, d indicates double float.
>>>>> lp64s indicates uses 32-bit FPRs, s indicates single float.
>>>>> lp64f indicates uses no FPRs, f indicates soft float.
>>>>>
>>>>> The specification does not define sf, so I removed it.
>>>>> The define in musl is also consistent with gcc.
>>>>
>>>> Please use naming consistent with what we do for other archs in musl
>>>> for a proposal to be included in musl. This means:
>>>>
>>>> - Subarch should be empty for the default (I assume that means
>>>> hardware floating point with full double precision) ABI that you
>>>> expect most Linux-compatible systems to be using.
>>>>
>>>> - Don't include extraneous stuff like "lp64" that's universal to the
>>>> architecture in the subarch name. There isn't a need to align these
>>>> names with anything outside of musl.
>>>>
>>>> Please stick with what has already been approved, with changes
>>>> well-motivated -- in this case, that means just proposing a name for
>>>> the single-precision subarch. My preference would be to use "-sp" like
>>>> we did for riscv64.
>>>>
>>>> The reason this has taken so long to get merged is that *every* time I
>>>> set aside some time to apply it, there are new gratuitous changes,
>>>> many of which seem to be motivated by style musl does not follow. I'd
>>>> like to merge precisely what I reviewed last time, with the gratuitous
>>>> changes I found reverted, plus the new subarch/ldso name for single
>>>> precision. Does this sound good?
>>>>
>>>> Rich
>>>>
>>>
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v8.
2024-01-29 1:26 ` [musl] " Hongliang Wang
@ 2024-01-29 3:14 ` Rich Felker
2024-01-29 7:37 ` Hongliang Wang
0 siblings, 1 reply; 35+ messages in thread
From: Rich Felker @ 2024-01-29 3:14 UTC (permalink / raw)
To: Hongliang Wang; +Cc: musl
On Mon, Jan 29, 2024 at 09:26:21AM +0800, Hongliang Wang wrote:
> Hi, Rich
>
> I'm sorry to ask again about the progress of the LoongArch64 patch.
> The Alpine support LoongArch porting has stopped and waiting for musl
> for a long time. see alpine TSC:
> https://gitlab.alpinelinux.org/alpine/tsc/-/issues/72
>
> So we would like to ask about the approximate time and plan for patch
> merge? Is it possible to be merged in the near future?
Yes, I started on it a couple days ago and got through pretty much
everything but looking over the asm that changed. Sorry for not CC'ing
you on it. The thread is here:
https://www.openwall.com/lists/musl/2024/01/25/12
(Message-ID: <20240125174353.GW22081@brightrain.aerifal.cx>)
My intent is to get this merged and make a release soon after.
Rich
^ permalink raw reply [flat|nested] 35+ messages in thread
* Re: [musl] add loongarch64 port v8.
2024-01-29 3:14 ` Rich Felker
@ 2024-01-29 7:37 ` Hongliang Wang
0 siblings, 0 replies; 35+ messages in thread
From: Hongliang Wang @ 2024-01-29 7:37 UTC (permalink / raw)
To: Rich Felker; +Cc: musl
在 2024/1/29 上午11:14, Rich Felker 写道:
> On Mon, Jan 29, 2024 at 09:26:21AM +0800, Hongliang Wang wrote:
>> Hi, Rich
>>
>> I'm sorry to ask again about the progress of the LoongArch64 patch.
>> The Alpine support LoongArch porting has stopped and waiting for musl
>> for a long time. see alpine TSC:
>> https://gitlab.alpinelinux.org/alpine/tsc/-/issues/72
>>
>> So we would like to ask about the approximate time and plan for patch
>> merge? Is it possible to be merged in the near future?
>
> Yes, I started on it a couple days ago and got through pretty much
> everything but looking over the asm that changed. Sorry for not CC'ing
> you on it. The thread is here:
>
> https://www.openwall.com/lists/musl/2024/01/25/12
>
> (Message-ID: <20240125174353.GW22081@brightrain.aerifal.cx>)
>
> My intent is to get this merged and make a release soon after.
>
> Rich
>
Hi, Rich
I am very happy to hear about the patch is being reviewed and preparing
for merge and release soon after. thank you for taking the time to work
for loongarch64 merge.
Regards,
Hongliang Wang
^ permalink raw reply [flat|nested] 35+ messages in thread
end of thread, other threads:[~2024-01-29 7:38 UTC | newest]
Thread overview: 35+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-04-18 1:28 [musl] add loongarch64 port v7 王洪亮
2023-04-18 9:38 ` Szabolcs Nagy
2023-04-18 10:47 ` Szabolcs Nagy
2023-04-18 11:32 ` 王洪亮
2023-05-10 3:36 ` 王洪亮
2023-06-01 12:44 ` wanghongliang
2023-06-25 3:43 ` Hongliang Wang
2023-07-19 6:55 ` Hongliang Wang
2023-08-05 6:18 ` 翟小娟
2023-08-05 15:43 ` Rich Felker
2023-08-13 1:41 ` Rich Felker
2023-08-15 9:24 ` Hongliang Wang
2023-08-15 9:32 ` alice
2023-08-25 9:27 ` 翟小娟
[not found] ` <99d954ca-faee-2cac-97af-7fc2ecdb9a89@loongson.cn>
2023-09-20 7:45 ` Jianmin Lv
2023-09-20 13:16 ` Szabolcs Nagy
2023-09-22 1:37 ` Hongliang Wang
2023-09-26 3:28 ` [musl] add loongarch64 port v8 Hongliang Wang
2023-10-08 3:05 ` 花静云
2023-11-09 13:15 ` Jingyun Hua
2023-11-14 13:16 ` Jingyun Hua
2023-11-16 2:54 ` [musl] add loongarch64 port v9 Hongliang Wang
2023-11-16 16:10 ` Rich Felker
2023-11-17 7:20 ` Hongliang Wang
2023-11-17 17:25 ` Rich Felker
2023-11-18 4:19 ` Jingyun Hua
2023-11-20 6:11 ` Hongliang Wang
2023-12-08 8:23 ` [musl] Re:[musl] add loongarch64 port v8 Hongliang Wang
2023-12-18 7:44 ` Jingyun Hua
2024-01-29 1:26 ` [musl] " Hongliang Wang
2024-01-29 3:14 ` Rich Felker
2024-01-29 7:37 ` Hongliang Wang
2023-11-16 16:44 ` [musl] add loongarch64 port v9 Szabolcs Nagy
2023-11-16 17:18 ` Szabolcs Nagy
2023-11-17 7:19 ` Hongliang Wang
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).