mailing list of musl libc
 help / color / mirror / code / Atom feed
* [musl] add loongarch64 port v4
@ 2022-06-08  3:56 王洪亮
  2022-06-14  7:23 ` [musl] " 王洪亮
  0 siblings, 1 reply; 7+ messages in thread
From: 王洪亮 @ 2022-06-08  3:56 UTC (permalink / raw)
  To: musl

[-- Attachment #1: Type: text/plain, Size: 597 bytes --]

Hi,

I published loongarch64 port v4 in
https://github.com/loongson/musl/tree/loongarch-v2.0.

fixed the following problems:

1.fixed  the extension field of struct mcontext

2.removed arch/loongarch64/kstat.h

3.deleted the incorrect definition in arch/loongarch64/reloc.h

4.optimize  dlsym

please code review if there are any other problems ? thanks.

I have one questions:

Through  add "long__uc_pad" in struct ucontext_t  to meet the 
extcontext[] 16 bytes alignment,

if run in loongarch32, this method not meet the  16 bytes alignment 
requirement. how to do it ?


Hongliang Wang.


[-- Attachment #2: 0001-add-loongarch64-port-v4.patch --]
[-- Type: text/x-patch, Size: 47132 bytes --]

From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Wed, 8 Jun 2022 01:42:12 +0800
Subject: [PATCH] add loongarch64 port v4.

Author: xiaojuanZhai <zhaixiaojuan@loongson.cn>
Author: meidanLi <limeidan@loongson.cn>
Author: guoqiChen <chenguoqi@loongson.cn>
Author: xiaolinZhao <zhaoxiaolin@loongson.cn>
Author: Fanpeng <fanpeng@loongson.cn>
Author: jiantaoShan <shanjiantao@loongson.cn>
Author: xuhuiQiang <qiangxuhui@loongson.cn>
Author: jingyunHua <huajingyun@loongson.cn>
Author: liuxue <liuxue@loongson.cn>
Author: wanghongliang <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/hwcap.h              |  14 +
 arch/loongarch64/bits/posix.h              |   2 +
 arch/loongarch64/bits/ptrace.h             |   4 +
 arch/loongarch64/bits/reg.h                |  66 +++++
 arch/loongarch64/bits/setjmp.h             |   1 +
 arch/loongarch64/bits/signal.h             |  80 ++++++
 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                |  14 +
 arch/loongarch64/pthread_arch.h            |  13 +
 arch/loongarch64/reloc.h                   |  27 ++
 arch/loongarch64/syscall_arch.h            | 137 ++++++++++
 configure                                  |   1 +
 crt/loongarch64/crti.s                     |  15 +
 crt/loongarch64/crtn.s                     |  12 +
 include/elf.h                              |  66 +++++
 src/fenv/loongarch64/fenv.S                |  72 +++++
 src/ldso/loongarch64/dlsym.s               |   7 +
 src/setjmp/loongarch64/longjmp.S           |  37 +++
 src/setjmp/loongarch64/setjmp.S            |  34 +++
 src/signal/loongarch64/restore.s           |  10 +
 src/signal/loongarch64/sigsetjmp.s         |  29 ++
 src/thread/loongarch64/__set_thread_area.s |   7 +
 src/thread/loongarch64/__unmapself.s       |   7 +
 src/thread/loongarch64/clone.s             |  47 ++++
 src/thread/loongarch64/syscall_cp.s        |  29 ++
 32 files changed, 1184 insertions(+)
 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/hwcap.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 crt/loongarch64/crti.s
 create mode 100644 crt/loongarch64/crtn.s
 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..bf4805c9
--- /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..d1807aca
--- /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..264cafb5
--- /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 __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..719c7908
--- /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/hwcap.h b/arch/loongarch64/bits/hwcap.h
new file mode 100644
index 00000000..c9fa08f6
--- /dev/null
+++ b/arch/loongarch64/bits/hwcap.h
@@ -0,0 +1,14 @@
+/* HWCAP - Hardware Capabilities.
+ * Hardware information is not clear at present, leave it blank.
+ */
+#define HWCAP_LOONGARCH_CPUCFG	(1 << 0)
+#define HWCAP_LOONGARCH_FPU	(1 << 1)
+#define HWCAP_LOONGARCH_LSX	(1 << 2)  /* support 128bit vectors*/
+#define HWCAP_LOONGARCH_LASX	(1 << 3)  /* support 256bit vectors*/
+#define HWCAP_LOONGARCH_LBT	(1 << 4)  /* support LBT*/
+#define HWCAP_LOONGARCH_LVZ	(1 << 5)  /* support virtualization expansion*/
+#define HWCAP_LOONGARCH_CRC32	(1 << 7)  /* support CRC32 check*/
+#define HWCAP_LOONGARCH_AES	(1 << 6)
+#define HWCAP_LOONGARCH_SHA1	(1 << 8)
+#define HWCAP_LOONGARCH_SHA2	(1 << 9)
+#define HWCAP_LOONGARCH_SHA3	(1 << 10)
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..8068ce98
--- /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..741fc668
--- /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..5d3f92c5
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,66 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
+#define LOONGARCH64_EF_R0   0
+#define LOONGARCH64_EF_R1   1
+#define LOONGARCH64_EF_R2   2
+#define LOONGARCH64_EF_R3   3
+#define LOONGARCH64_EF_R4   4
+#define LOONGARCH64_EF_R5   5
+#define LOONGARCH64_EF_R6   6
+#define LOONGARCH64_EF_R7   7
+#define LOONGARCH64_EF_R8   8
+#define LOONGARCH64_EF_R9   9
+#define LOONGARCH64_EF_R10    10
+#define LOONGARCH64_EF_R11    11
+#define LOONGARCH64_EF_R12    12
+#define LOONGARCH64_EF_R13    13
+#define LOONGARCH64_EF_R14    14
+#define LOONGARCH64_EF_R15    15
+#define LOONGARCH64_EF_R16    16
+#define LOONGARCH64_EF_R17    17
+#define LOONGARCH64_EF_R18    18
+#define LOONGARCH64_EF_R19    19
+#define LOONGARCH64_EF_R20    20
+#define LOONGARCH64_EF_R21    21
+#define LOONGARCH64_EF_R22    22
+#define LOONGARCH64_EF_R23    23
+#define LOONGARCH64_EF_R24    24
+#define LOONGARCH64_EF_R25    25
+#define LOONGARCH64_EF_R26    26
+#define LOONGARCH64_EF_R27    27
+#define LOONGARCH64_EF_R28    28
+#define LOONGARCH64_EF_R29    29
+#define LOONGARCH64_EF_R30    30
+#define LOONGARCH64_EF_R31    31
+
+#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
+
+#define EF_R0     LOONGARCH64_EF_R0
+#define EF_R1     LOONGARCH64_EF_R1
+#define EF_R2     LOONGARCH64_EF_R2
+#define EF_R3     LOONGARCH64_EF_R3
+#define EF_R4     LOONGARCH64_EF_R4
+#define EF_R5     LOONGARCH64_EF_R5
+#define EF_R6     LOONGARCH64_EF_R6
+#define EF_R7     LOONGARCH64_EF_R7
+#define EF_R8     LOONGARCH64_EF_R8
+#define EF_R9     LOONGARCH64_EF_R9
+#define EF_R10      LOONGARCH64_EF_R10
+#define EF_R11      LOONGARCH64_EF_R11
+#define EF_R12      LOONGARCH64_EF_R12
+#define EF_R13      LOONGARCH64_EF_R13
+#define EF_R14      LOONGARCH64_EF_R14
+#define EF_R15      LOONGARCH64_EF_R15
+#define EF_R16      LOONGARCH64_EF_R16
+#define EF_R17      LOONGARCH64_EF_R17
+#define EF_R18      LOONGARCH64_EF_R18
+#define EF_R19      LOONGARCH64_EF_R19
+#define EF_R20      LOONGARCH64_EF_R20
+#define EF_R21      LOONGARCH64_EF_R21
+#define EF_R22      LOONGARCH64_EF_R22
+#define EF_R23      LOONGARCH64_EF_R23
+#define EF_R24      LOONGARCH64_EF_R24
+#define EF_R25      LOONGARCH64_EF_R25
+#define EF_R26      LOONGARCH64_EF_R26
+#define EF_R27      LOONGARCH64_EF_R27
+#define EF_R28      LOONGARCH64_EF_R28
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..f4a7f8a3
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long long __jmp_buf[22];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..4db790e7
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,80 @@
+#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
+
+typedef unsigned long greg_t, gregset_t[32];
+
+typedef struct sigcontext {
+	unsigned long pc;
+	gregset_t gregs;
+	unsigned int flags;
+	unsigned long extcontext[];
+} mcontext_t;
+
+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   0x04000000
+
+#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..1bb147f2
--- /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..689ff36b
--- /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..4d4cd534
--- /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..c806a0bf
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,14 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type   " START ", @function\n"
+START ":\n"
+"	add.w $fp, $r0,$r0\n"
+"	or $a0, $sp, $zero\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+"	la.local $a1, _DYNAMIC\n"
+"	addi.w $t7, $r0, -16\n"
+"	and $sp, $sp, $t7\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..95ee4c7a
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,13 @@
+static inline uintptr_t __get_tp()
+{
+	register uintptr_t tp __asm__("tp");
+	__asm__ ("" : "=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..2f759a34
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,27 @@
+#ifdef __loongarch64_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "loongarch64"  FP_SUFFIX
+
+#define TPOFF_K (0x0)
+
+#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" \
+	"	or %0, $t1, $zero \n" \
+	: "=r"(*(fp)) : : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..ddd29578
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+	"$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_2.6"
+
+#define IPC_64  0
diff --git a/configure b/configure
index 6f5453f5..aac0c467 100755
--- a/configure
+++ b/configure
@@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
 riscv64*) ARCH=riscv64 ;;
 sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
 s390x*) ARCH=s390x ;;
+loongarch64*) ARCH=loongarch64 ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
 *) fail "$0: unknown or unsupported target \"$target\"" ;;
 esac
diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
new file mode 100644
index 00000000..96a754d3
--- /dev/null
+++ b/crt/loongarch64/crti.s
@@ -0,0 +1,15 @@
+.section .init
+.global _init
+_init:
+	addi.d	$r3,$r3,-16
+	st.d	$fp,$r3,0
+	st.d	$ra,$r3,8
+	addi.d  $fp,$r3,16
+
+.section .fini
+.global _fini
+_fini:
+	addi.d	$r3,$r3,-16
+	st.d	$fp,$r3,0
+	st.d	$ra,$r3,8
+	addi.d  $fp,$r3,16
diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
new file mode 100644
index 00000000..bffb18f4
--- /dev/null
+++ b/crt/loongarch64/crtn.s
@@ -0,0 +1,12 @@
+.section .init
+	ld.d	$fp,$r3,0
+	ld.d	$ra,$r3,8
+	addi.d	$r3,$r3,16
+	jirl	$r0,$ra,0
+
+
+.section .fini
+	ld.d	$fp,$r3,0
+	ld.d	$ra,$r3,8
+	addi.d	$r3,$r3,16
+	jirl	$r0,$ra,0
diff --git a/include/elf.h b/include/elf.h
index 86e2f0bb..69b01ff4 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -697,6 +697,11 @@ 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
 
 
 
@@ -3288,6 +3293,67 @@ enum
 #define R_RISCV_SET32           56
 #define R_RISCV_32_PCREL        57
 
+/* LoongISA ELF Flags */
+#define EM_LOONGARCH  258
+
+#define EF_LARCH_ABI             0x0003
+#define EF_LARCH_ABI_LP64        0x0003
+#define EF_LARCH_ABI_LP32        0x0001
+
+/* Loongarch specific dynamic relocations. */
+#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
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..049234be
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,72 @@
+#ifndef __loongarch_soft_float
+
+.global	feclearexcept
+.type	feclearexcept,@function
+feclearexcept:
+	li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
+	and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+	or	$a1, $a1, $a0
+	xor	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+	li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	feraiseexcept
+.type	feraiseexcept,@function
+feraiseexcept:
+	li.w    $a1, 0x1f0000
+	and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+	or	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fetestexcept
+.type	fetestexcept,@function
+fetestexcept:
+        li.w    $a1, 0x1f0000
+        and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+        and     $v0, $a1, $a0
+	jirl    $zero, $ra, 0
+
+.global	fegetround
+.type	fegetround,@function
+fegetround:
+	movfcsr2gr $v0, $r0
+        andi    $v0, $v0, 0x300  //fcsr0.RM
+	jirl    $zero, $ra, 0
+
+.global	__fesetround
+.hidden __fesetround
+.type	__fesetround,@function
+__fesetround:
+	movfcsr2gr $a1, $r0
+	li.w	$a2, -769  //0xfffffcff
+	and	$a1, $a1, $a2
+	or	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fegetenv
+.type	fegetenv,@function
+fegetenv:
+	movfcsr2gr $a1, $r0
+	st.w	$a1, $a0, 0
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fesetenv
+.type	fesetenv,@function
+fesetenv:
+	addi.d	$a1, $a0, 1
+	beq	$a1, $r0, 1f
+	ld.w	$a1, $a0, 0
+1:	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..5f51ed85
--- /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	$r16, __dlsym
+	jirl	$r0, $r16, 0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..41d897ed
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,37 @@
+.global    _longjmp
+.global    longjmp
+.type    _longjmp,@function
+.type    longjmp,@function
+_longjmp:
+longjmp:
+	add.d   $t5, $a0, $zero
+	add.d   $v0, $a1, $zero
+
+	bne     $v0, $zero, 1f
+	addi.d  $v0, $v0, 1
+
+1:
+	ld.d    $ra, $t5, 0
+	ld.d    $sp, $t5, 8
+	ld.d    $r21,$t5, 16
+	ld.d    $fp, $t5, 24
+	ld.d    $s0, $t5, 32
+	ld.d    $s1, $t5, 40
+	ld.d    $s2, $t5, 48
+	ld.d    $s3, $t5, 56
+	ld.d    $s4, $t5, 64
+	ld.d    $s5, $t5, 72
+	ld.d    $s6, $t5, 80
+	ld.d    $s7, $t5, 88
+	ld.d    $s8, $t5, 96
+#ifndef __loongarch64_soft_float
+	fld.d   $fs0, $t5, 104
+	fld.d   $fs1, $t5, 112
+	fld.d   $fs2, $t5, 120
+	fld.d   $fs3, $t5, 128
+	fld.d   $fs4, $t5, 136
+	fld.d   $fs5, $t5, 144
+	fld.d   $fs6, $t5, 152
+	fld.d   $fs7, $t5, 160
+#endif
+	jirl    $zero, $ra, 0
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..8dca3cb8
--- /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 __loongarch64_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
+	xor     $v0, $v0, $v0
+	jirl    $zero, $ra, 0
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..9bf015a0
--- /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:
+	ori	$a7, $zero, 139
+	syscall	0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..d53f334a
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,29 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type   sigsetjmp,@function
+.type   __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+        or $t5, $a0, $zero
+        or $t6, $a1, $zero
+
+        # comparing save mask with 0, if equals to 0 then
+        # sigsetjmp is equal to setjmp.
+        beq     $t6, $zero, 1f
+        st.d    $ra, $t5, 168
+
+        # save base of got so that we can use it later
+        # once we return from 'longjmp'
+        la.global  $t8, setjmp
+        jirl    $ra, $t8, 0
+
+        or      $v1, $v0, $zero # Return from 'setjmp' or 'longjmp'
+        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
+        or      $a0, $t5, $zero
+
+.hidden __sigsetjmp_tail
+        la.global  $t8, __sigsetjmp_tail
+        jirl       $zero, $t8, 0
+1:
+        la.global  $t8, setjmp
+        jirl       $zero, $t8, 0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..421cd381
--- /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:
+	or	$tp, $a0, $zero
+	ori	$a0, $zero, 0
+	jirl	$zero, $ra, 0
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..b77e6d1d
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global	__unmapself
+.type	__unmapself, @function
+__unmapself:
+	li.d	$a7, 215
+	syscall	0				# call munmap
+	li.d	$a7, 93
+	syscall	0				# call exit
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..ec920c7b
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,47 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+#         a0,    a1,   a2,    a3,  a4,  a5,   a6
+# sys_clone3(struct clone_args *cl_args, size_t size)
+#                                 a0             a1
+
+.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
+
+	li.d	$t0, ~0x004000ff  # mask CSIGNAL and CLONE_DETACHED
+	and	$t1, $a2, $t0     # cl_args.flags
+	li.d	$t0, 0x000000ff   # CSIGNAL
+	and	$t2, $a2, $t0     # cl_args.exit_signal
+
+	bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
+	addi.d	$sp, $sp, -88   # struct clone_args
+	st.d	$t1, $sp, 0     # flags
+	st.d	$a4, $sp, 8     # pidfd
+	st.d	$a6, $sp, 16    # child_tid
+	st.d	$a4, $sp, 24    # parent_tid
+	st.d	$t2, $sp, 32    # exit_signal
+	st.d	$a1, $sp, 40    # stack
+	st.d	$zero, $sp, 48  # stack_size
+	st.d	$a5, $sp, 56    # tls
+	st.d	$zero, $sp, 64  # set_tid
+	st.d	$zero, $sp, 72  # set_tid_size
+	st.d	$zero, $sp, 80  # cgroup
+
+	move	$a0, $sp
+	li.d	$a1, 88
+	li.d	$a7, 435	# __NR_clone3
+	syscall 0		# call clone3
+
+	beqz	$a0, 1f		# whether child process
+	addi.d	$sp, $sp, 88
+	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
+	li.d	$a7, 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..3903ed2c
--- /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
+	or	$t8, $a1, $zero     # reserve system call number
+	or	$a0, $a2, $zero
+	or	$a1, $a3, $zero
+	or	$a2, $a4, $zero
+	or	$a3, $a5, $zero
+	or	$a4, $a6, $zero
+	or	$a5, $a7, $zero
+	or	$a7, $t8, $zero
+	syscall	0
+__cp_end:
+	jirl	$zero, $ra, 0
+__cp_cancel:
+	la.local $t8, __cancel
+	jirl	$zero, $t8, 0
-- 
2.34.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [musl] Re: add loongarch64 port v4
  2022-06-08  3:56 [musl] add loongarch64 port v4 王洪亮
@ 2022-06-14  7:23 ` 王洪亮
  2022-06-20  9:49   ` 王洪亮
  0 siblings, 1 reply; 7+ messages in thread
From: 王洪亮 @ 2022-06-14  7:23 UTC (permalink / raw)
  To: musl

Hi,

1. this patch has any other problems need to be modified?

2.what are the suggestions for support LA32?


在 2022/6/8 上午11:56, 王洪亮 写道:
> Hi,
>
> I published loongarch64 port v4 in
> https://github.com/loongson/musl/tree/loongarch-v2.0.
>
> fixed the following problems:
>
> 1.fixed  the extension field of struct mcontext
>
> 2.removed arch/loongarch64/kstat.h
>
> 3.deleted the incorrect definition in arch/loongarch64/reloc.h
>
> 4.optimize  dlsym
>
> please code review if there are any other problems ? thanks.
>
> I have one questions:
>
> Through  add "long__uc_pad" in struct ucontext_t  to meet the 
> extcontext[] 16 bytes alignment,
>
> if run in loongarch32, this method not meet the  16 bytes alignment 
> requirement. how to do it ?
>
>
> Hongliang Wang.
>


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [musl] Re: add loongarch64 port v4
  2022-06-14  7:23 ` [musl] " 王洪亮
@ 2022-06-20  9:49   ` 王洪亮
  2022-06-23  1:30     ` 王洪亮
  0 siblings, 1 reply; 7+ messages in thread
From: 王洪亮 @ 2022-06-20  9:49 UTC (permalink / raw)
  To: musl

Hi,  Rich

1. this patch has any other problems need to be modified?

2.what are the suggestions for support LA32 later?


在 2022/6/14 下午3:23, 王洪亮 写道:
> Hi,
>
> 1. this patch has any other problems need to be modified?
>
> 2.what are the suggestions for support LA32?
>
>
> 在 2022/6/8 上午11:56, 王洪亮 写道:
>> Hi,
>>
>> I published loongarch64 port v4 in
>> https://github.com/loongson/musl/tree/loongarch-v2.0.
>>
>> fixed the following problems:
>>
>> 1.fixed  the extension field of struct mcontext
>>
>> 2.removed arch/loongarch64/kstat.h
>>
>> 3.deleted the incorrect definition in arch/loongarch64/reloc.h
>>
>> 4.optimize  dlsym
>>
>> please code review if there are any other problems ? thanks.
>>
>> I have one questions:
>>
>> Through  add "long__uc_pad" in struct ucontext_t  to meet the 
>> extcontext[] 16 bytes alignment,
>>
>> if run in loongarch32, this method not meet the  16 bytes alignment 
>> requirement. how to do it ?
>>
>>
>> Hongliang Wang.
>>


^ permalink raw reply	[flat|nested] 7+ messages in thread

* [musl] Re: add loongarch64 port v4
  2022-06-20  9:49   ` 王洪亮
@ 2022-06-23  1:30     ` 王洪亮
  2022-06-23  1:59       ` Rich Felker
  0 siblings, 1 reply; 7+ messages in thread
From: 王洪亮 @ 2022-06-23  1:30 UTC (permalink / raw)
  To: musl

[-- Attachment #1: Type: text/plain, Size: 1221 bytes --]

Hi,  Rich

  this patch has any other problems need to be modified?

Looking forward to your reply. thanks.


Hongliang Wang

在 2022/6/20 下午5:49, 王洪亮 写道:
> Hi, Rich
>
> 1. this patch has any other problems need to be modified?
>
> 2.what are the suggestions for support LA32 later?
>
>
> 在 2022/6/14 下午3:23, 王洪亮 写道:
>> Hi,
>>
>> 1. this patch has any other problems need to be modified?
>>
>> 2.what are the suggestions for support LA32?
>>
>>
>> 在 2022/6/8 上午11:56, 王洪亮 写道:
>>> Hi,
>>>
>>> I published loongarch64 port v4 in
>>> https://github.com/loongson/musl/tree/loongarch-v2.0.
>>>
>>> fixed the following problems:
>>>
>>> 1.fixed  the extension field of struct mcontext
>>>
>>> 2.removed arch/loongarch64/kstat.h
>>>
>>> 3.deleted the incorrect definition in arch/loongarch64/reloc.h
>>>
>>> 4.optimize  dlsym
>>>
>>> please code review if there are any other problems ? thanks.
>>>
>>> I have one questions:
>>>
>>> Through  add "long__uc_pad" in struct ucontext_t  to meet the 
>>> extcontext[] 16 bytes alignment,
>>>
>>> if run in loongarch32, this method not meet the  16 bytes alignment 
>>> requirement. how to do it ?
>>>
>>>
>>> Hongliang Wang.
>>>

[-- Attachment #2: 0001-add-loongarch64-port-v4.patch --]
[-- Type: text/x-patch, Size: 47132 bytes --]

From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Wed, 8 Jun 2022 01:42:12 +0800
Subject: [PATCH] add loongarch64 port v4.

Author: xiaojuanZhai <zhaixiaojuan@loongson.cn>
Author: meidanLi <limeidan@loongson.cn>
Author: guoqiChen <chenguoqi@loongson.cn>
Author: xiaolinZhao <zhaoxiaolin@loongson.cn>
Author: Fanpeng <fanpeng@loongson.cn>
Author: jiantaoShan <shanjiantao@loongson.cn>
Author: xuhuiQiang <qiangxuhui@loongson.cn>
Author: jingyunHua <huajingyun@loongson.cn>
Author: liuxue <liuxue@loongson.cn>
Author: wanghongliang <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/hwcap.h              |  14 +
 arch/loongarch64/bits/posix.h              |   2 +
 arch/loongarch64/bits/ptrace.h             |   4 +
 arch/loongarch64/bits/reg.h                |  66 +++++
 arch/loongarch64/bits/setjmp.h             |   1 +
 arch/loongarch64/bits/signal.h             |  80 ++++++
 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                |  14 +
 arch/loongarch64/pthread_arch.h            |  13 +
 arch/loongarch64/reloc.h                   |  27 ++
 arch/loongarch64/syscall_arch.h            | 137 ++++++++++
 configure                                  |   1 +
 crt/loongarch64/crti.s                     |  15 +
 crt/loongarch64/crtn.s                     |  12 +
 include/elf.h                              |  66 +++++
 src/fenv/loongarch64/fenv.S                |  72 +++++
 src/ldso/loongarch64/dlsym.s               |   7 +
 src/setjmp/loongarch64/longjmp.S           |  37 +++
 src/setjmp/loongarch64/setjmp.S            |  34 +++
 src/signal/loongarch64/restore.s           |  10 +
 src/signal/loongarch64/sigsetjmp.s         |  29 ++
 src/thread/loongarch64/__set_thread_area.s |   7 +
 src/thread/loongarch64/__unmapself.s       |   7 +
 src/thread/loongarch64/clone.s             |  47 ++++
 src/thread/loongarch64/syscall_cp.s        |  29 ++
 32 files changed, 1184 insertions(+)
 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/hwcap.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 crt/loongarch64/crti.s
 create mode 100644 crt/loongarch64/crtn.s
 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..bf4805c9
--- /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..d1807aca
--- /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..264cafb5
--- /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 __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..719c7908
--- /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/hwcap.h b/arch/loongarch64/bits/hwcap.h
new file mode 100644
index 00000000..c9fa08f6
--- /dev/null
+++ b/arch/loongarch64/bits/hwcap.h
@@ -0,0 +1,14 @@
+/* HWCAP - Hardware Capabilities.
+ * Hardware information is not clear at present, leave it blank.
+ */
+#define HWCAP_LOONGARCH_CPUCFG	(1 << 0)
+#define HWCAP_LOONGARCH_FPU	(1 << 1)
+#define HWCAP_LOONGARCH_LSX	(1 << 2)  /* support 128bit vectors*/
+#define HWCAP_LOONGARCH_LASX	(1 << 3)  /* support 256bit vectors*/
+#define HWCAP_LOONGARCH_LBT	(1 << 4)  /* support LBT*/
+#define HWCAP_LOONGARCH_LVZ	(1 << 5)  /* support virtualization expansion*/
+#define HWCAP_LOONGARCH_CRC32	(1 << 7)  /* support CRC32 check*/
+#define HWCAP_LOONGARCH_AES	(1 << 6)
+#define HWCAP_LOONGARCH_SHA1	(1 << 8)
+#define HWCAP_LOONGARCH_SHA2	(1 << 9)
+#define HWCAP_LOONGARCH_SHA3	(1 << 10)
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..8068ce98
--- /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..741fc668
--- /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..5d3f92c5
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,66 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
+#define LOONGARCH64_EF_R0   0
+#define LOONGARCH64_EF_R1   1
+#define LOONGARCH64_EF_R2   2
+#define LOONGARCH64_EF_R3   3
+#define LOONGARCH64_EF_R4   4
+#define LOONGARCH64_EF_R5   5
+#define LOONGARCH64_EF_R6   6
+#define LOONGARCH64_EF_R7   7
+#define LOONGARCH64_EF_R8   8
+#define LOONGARCH64_EF_R9   9
+#define LOONGARCH64_EF_R10    10
+#define LOONGARCH64_EF_R11    11
+#define LOONGARCH64_EF_R12    12
+#define LOONGARCH64_EF_R13    13
+#define LOONGARCH64_EF_R14    14
+#define LOONGARCH64_EF_R15    15
+#define LOONGARCH64_EF_R16    16
+#define LOONGARCH64_EF_R17    17
+#define LOONGARCH64_EF_R18    18
+#define LOONGARCH64_EF_R19    19
+#define LOONGARCH64_EF_R20    20
+#define LOONGARCH64_EF_R21    21
+#define LOONGARCH64_EF_R22    22
+#define LOONGARCH64_EF_R23    23
+#define LOONGARCH64_EF_R24    24
+#define LOONGARCH64_EF_R25    25
+#define LOONGARCH64_EF_R26    26
+#define LOONGARCH64_EF_R27    27
+#define LOONGARCH64_EF_R28    28
+#define LOONGARCH64_EF_R29    29
+#define LOONGARCH64_EF_R30    30
+#define LOONGARCH64_EF_R31    31
+
+#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
+
+#define EF_R0     LOONGARCH64_EF_R0
+#define EF_R1     LOONGARCH64_EF_R1
+#define EF_R2     LOONGARCH64_EF_R2
+#define EF_R3     LOONGARCH64_EF_R3
+#define EF_R4     LOONGARCH64_EF_R4
+#define EF_R5     LOONGARCH64_EF_R5
+#define EF_R6     LOONGARCH64_EF_R6
+#define EF_R7     LOONGARCH64_EF_R7
+#define EF_R8     LOONGARCH64_EF_R8
+#define EF_R9     LOONGARCH64_EF_R9
+#define EF_R10      LOONGARCH64_EF_R10
+#define EF_R11      LOONGARCH64_EF_R11
+#define EF_R12      LOONGARCH64_EF_R12
+#define EF_R13      LOONGARCH64_EF_R13
+#define EF_R14      LOONGARCH64_EF_R14
+#define EF_R15      LOONGARCH64_EF_R15
+#define EF_R16      LOONGARCH64_EF_R16
+#define EF_R17      LOONGARCH64_EF_R17
+#define EF_R18      LOONGARCH64_EF_R18
+#define EF_R19      LOONGARCH64_EF_R19
+#define EF_R20      LOONGARCH64_EF_R20
+#define EF_R21      LOONGARCH64_EF_R21
+#define EF_R22      LOONGARCH64_EF_R22
+#define EF_R23      LOONGARCH64_EF_R23
+#define EF_R24      LOONGARCH64_EF_R24
+#define EF_R25      LOONGARCH64_EF_R25
+#define EF_R26      LOONGARCH64_EF_R26
+#define EF_R27      LOONGARCH64_EF_R27
+#define EF_R28      LOONGARCH64_EF_R28
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..f4a7f8a3
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long long __jmp_buf[22];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..4db790e7
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,80 @@
+#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
+
+typedef unsigned long greg_t, gregset_t[32];
+
+typedef struct sigcontext {
+	unsigned long pc;
+	gregset_t gregs;
+	unsigned int flags;
+	unsigned long extcontext[];
+} mcontext_t;
+
+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   0x04000000
+
+#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..1bb147f2
--- /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..689ff36b
--- /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..4d4cd534
--- /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..c806a0bf
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,14 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type   " START ", @function\n"
+START ":\n"
+"	add.w $fp, $r0,$r0\n"
+"	or $a0, $sp, $zero\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+"	la.local $a1, _DYNAMIC\n"
+"	addi.w $t7, $r0, -16\n"
+"	and $sp, $sp, $t7\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..95ee4c7a
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,13 @@
+static inline uintptr_t __get_tp()
+{
+	register uintptr_t tp __asm__("tp");
+	__asm__ ("" : "=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..2f759a34
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,27 @@
+#ifdef __loongarch64_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "loongarch64"  FP_SUFFIX
+
+#define TPOFF_K (0x0)
+
+#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" \
+	"	or %0, $t1, $zero \n" \
+	: "=r"(*(fp)) : : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..ddd29578
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+	"$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_2.6"
+
+#define IPC_64  0
diff --git a/configure b/configure
index 6f5453f5..aac0c467 100755
--- a/configure
+++ b/configure
@@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
 riscv64*) ARCH=riscv64 ;;
 sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
 s390x*) ARCH=s390x ;;
+loongarch64*) ARCH=loongarch64 ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
 *) fail "$0: unknown or unsupported target \"$target\"" ;;
 esac
diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
new file mode 100644
index 00000000..96a754d3
--- /dev/null
+++ b/crt/loongarch64/crti.s
@@ -0,0 +1,15 @@
+.section .init
+.global _init
+_init:
+	addi.d	$r3,$r3,-16
+	st.d	$fp,$r3,0
+	st.d	$ra,$r3,8
+	addi.d  $fp,$r3,16
+
+.section .fini
+.global _fini
+_fini:
+	addi.d	$r3,$r3,-16
+	st.d	$fp,$r3,0
+	st.d	$ra,$r3,8
+	addi.d  $fp,$r3,16
diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
new file mode 100644
index 00000000..bffb18f4
--- /dev/null
+++ b/crt/loongarch64/crtn.s
@@ -0,0 +1,12 @@
+.section .init
+	ld.d	$fp,$r3,0
+	ld.d	$ra,$r3,8
+	addi.d	$r3,$r3,16
+	jirl	$r0,$ra,0
+
+
+.section .fini
+	ld.d	$fp,$r3,0
+	ld.d	$ra,$r3,8
+	addi.d	$r3,$r3,16
+	jirl	$r0,$ra,0
diff --git a/include/elf.h b/include/elf.h
index 86e2f0bb..69b01ff4 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -697,6 +697,11 @@ 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
 
 
 
@@ -3288,6 +3293,67 @@ enum
 #define R_RISCV_SET32           56
 #define R_RISCV_32_PCREL        57
 
+/* LoongISA ELF Flags */
+#define EM_LOONGARCH  258
+
+#define EF_LARCH_ABI             0x0003
+#define EF_LARCH_ABI_LP64        0x0003
+#define EF_LARCH_ABI_LP32        0x0001
+
+/* Loongarch specific dynamic relocations. */
+#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
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..049234be
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,72 @@
+#ifndef __loongarch_soft_float
+
+.global	feclearexcept
+.type	feclearexcept,@function
+feclearexcept:
+	li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
+	and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+	or	$a1, $a1, $a0
+	xor	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+	li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	feraiseexcept
+.type	feraiseexcept,@function
+feraiseexcept:
+	li.w    $a1, 0x1f0000
+	and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+	or	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fetestexcept
+.type	fetestexcept,@function
+fetestexcept:
+        li.w    $a1, 0x1f0000
+        and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+        and     $v0, $a1, $a0
+	jirl    $zero, $ra, 0
+
+.global	fegetround
+.type	fegetround,@function
+fegetround:
+	movfcsr2gr $v0, $r0
+        andi    $v0, $v0, 0x300  //fcsr0.RM
+	jirl    $zero, $ra, 0
+
+.global	__fesetround
+.hidden __fesetround
+.type	__fesetround,@function
+__fesetround:
+	movfcsr2gr $a1, $r0
+	li.w	$a2, -769  //0xfffffcff
+	and	$a1, $a1, $a2
+	or	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fegetenv
+.type	fegetenv,@function
+fegetenv:
+	movfcsr2gr $a1, $r0
+	st.w	$a1, $a0, 0
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fesetenv
+.type	fesetenv,@function
+fesetenv:
+	addi.d	$a1, $a0, 1
+	beq	$a1, $r0, 1f
+	ld.w	$a1, $a0, 0
+1:	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..5f51ed85
--- /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	$r16, __dlsym
+	jirl	$r0, $r16, 0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..41d897ed
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,37 @@
+.global    _longjmp
+.global    longjmp
+.type    _longjmp,@function
+.type    longjmp,@function
+_longjmp:
+longjmp:
+	add.d   $t5, $a0, $zero
+	add.d   $v0, $a1, $zero
+
+	bne     $v0, $zero, 1f
+	addi.d  $v0, $v0, 1
+
+1:
+	ld.d    $ra, $t5, 0
+	ld.d    $sp, $t5, 8
+	ld.d    $r21,$t5, 16
+	ld.d    $fp, $t5, 24
+	ld.d    $s0, $t5, 32
+	ld.d    $s1, $t5, 40
+	ld.d    $s2, $t5, 48
+	ld.d    $s3, $t5, 56
+	ld.d    $s4, $t5, 64
+	ld.d    $s5, $t5, 72
+	ld.d    $s6, $t5, 80
+	ld.d    $s7, $t5, 88
+	ld.d    $s8, $t5, 96
+#ifndef __loongarch64_soft_float
+	fld.d   $fs0, $t5, 104
+	fld.d   $fs1, $t5, 112
+	fld.d   $fs2, $t5, 120
+	fld.d   $fs3, $t5, 128
+	fld.d   $fs4, $t5, 136
+	fld.d   $fs5, $t5, 144
+	fld.d   $fs6, $t5, 152
+	fld.d   $fs7, $t5, 160
+#endif
+	jirl    $zero, $ra, 0
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..8dca3cb8
--- /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 __loongarch64_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
+	xor     $v0, $v0, $v0
+	jirl    $zero, $ra, 0
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..9bf015a0
--- /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:
+	ori	$a7, $zero, 139
+	syscall	0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..d53f334a
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,29 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type   sigsetjmp,@function
+.type   __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+        or $t5, $a0, $zero
+        or $t6, $a1, $zero
+
+        # comparing save mask with 0, if equals to 0 then
+        # sigsetjmp is equal to setjmp.
+        beq     $t6, $zero, 1f
+        st.d    $ra, $t5, 168
+
+        # save base of got so that we can use it later
+        # once we return from 'longjmp'
+        la.global  $t8, setjmp
+        jirl    $ra, $t8, 0
+
+        or      $v1, $v0, $zero # Return from 'setjmp' or 'longjmp'
+        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
+        or      $a0, $t5, $zero
+
+.hidden __sigsetjmp_tail
+        la.global  $t8, __sigsetjmp_tail
+        jirl       $zero, $t8, 0
+1:
+        la.global  $t8, setjmp
+        jirl       $zero, $t8, 0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..421cd381
--- /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:
+	or	$tp, $a0, $zero
+	ori	$a0, $zero, 0
+	jirl	$zero, $ra, 0
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..b77e6d1d
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global	__unmapself
+.type	__unmapself, @function
+__unmapself:
+	li.d	$a7, 215
+	syscall	0				# call munmap
+	li.d	$a7, 93
+	syscall	0				# call exit
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..ec920c7b
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,47 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+#         a0,    a1,   a2,    a3,  a4,  a5,   a6
+# sys_clone3(struct clone_args *cl_args, size_t size)
+#                                 a0             a1
+
+.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
+
+	li.d	$t0, ~0x004000ff  # mask CSIGNAL and CLONE_DETACHED
+	and	$t1, $a2, $t0     # cl_args.flags
+	li.d	$t0, 0x000000ff   # CSIGNAL
+	and	$t2, $a2, $t0     # cl_args.exit_signal
+
+	bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
+	addi.d	$sp, $sp, -88   # struct clone_args
+	st.d	$t1, $sp, 0     # flags
+	st.d	$a4, $sp, 8     # pidfd
+	st.d	$a6, $sp, 16    # child_tid
+	st.d	$a4, $sp, 24    # parent_tid
+	st.d	$t2, $sp, 32    # exit_signal
+	st.d	$a1, $sp, 40    # stack
+	st.d	$zero, $sp, 48  # stack_size
+	st.d	$a5, $sp, 56    # tls
+	st.d	$zero, $sp, 64  # set_tid
+	st.d	$zero, $sp, 72  # set_tid_size
+	st.d	$zero, $sp, 80  # cgroup
+
+	move	$a0, $sp
+	li.d	$a1, 88
+	li.d	$a7, 435	# __NR_clone3
+	syscall 0		# call clone3
+
+	beqz	$a0, 1f		# whether child process
+	addi.d	$sp, $sp, 88
+	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
+	li.d	$a7, 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..3903ed2c
--- /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
+	or	$t8, $a1, $zero     # reserve system call number
+	or	$a0, $a2, $zero
+	or	$a1, $a3, $zero
+	or	$a2, $a4, $zero
+	or	$a3, $a5, $zero
+	or	$a4, $a6, $zero
+	or	$a5, $a7, $zero
+	or	$a7, $t8, $zero
+	syscall	0
+__cp_end:
+	jirl	$zero, $ra, 0
+__cp_cancel:
+	la.local $t8, __cancel
+	jirl	$zero, $t8, 0
-- 
2.34.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [musl] Re: add loongarch64 port v4
  2022-06-23  1:30     ` 王洪亮
@ 2022-06-23  1:59       ` Rich Felker
  2022-07-05 12:56         ` 王洪亮
  0 siblings, 1 reply; 7+ messages in thread
From: Rich Felker @ 2022-06-23  1:59 UTC (permalink / raw)
  To: 王洪亮; +Cc: musl

Hi. I just haven't gotten to reviewing it again. I'll try to take a
good look in the next day or two.

On Thu, Jun 23, 2022 at 09:30:55AM +0800, 王洪亮 wrote:
> Hi,  Rich
> 
>  this patch has any other problems need to be modified?
> 
> Looking forward to your reply. thanks.
> 
> 
> Hongliang Wang
> 
> 在 2022/6/20 下午5:49, 王洪亮 写道:
> >Hi, Rich
> >
> >1. this patch has any other problems need to be modified?
> >
> >2.what are the suggestions for support LA32 later?
> >
> >
> >在 2022/6/14 下午3:23, 王洪亮 写道:
> >>Hi,
> >>
> >>1. this patch has any other problems need to be modified?
> >>
> >>2.what are the suggestions for support LA32?
> >>
> >>
> >>在 2022/6/8 上午11:56, 王洪亮 写道:
> >>>Hi,
> >>>
> >>>I published loongarch64 port v4 in
> >>>https://github.com/loongson/musl/tree/loongarch-v2.0.
> >>>
> >>>fixed the following problems:
> >>>
> >>>1.fixed  the extension field of struct mcontext
> >>>
> >>>2.removed arch/loongarch64/kstat.h
> >>>
> >>>3.deleted the incorrect definition in arch/loongarch64/reloc.h
> >>>
> >>>4.optimize  dlsym
> >>>
> >>>please code review if there are any other problems ? thanks.
> >>>
> >>>I have one questions:
> >>>
> >>>Through  add "long__uc_pad" in struct ucontext_t  to meet the
> >>>extcontext[] 16 bytes alignment,
> >>>
> >>>if run in loongarch32, this method not meet the  16 bytes
> >>>alignment requirement. how to do it ?
> >>>
> >>>
> >>>Hongliang Wang.
> >>>

> >From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17 00:00:00 2001
> From: wanghongliang <wanghongliang@loongson.cn>
> Date: Wed, 8 Jun 2022 01:42:12 +0800
> Subject: [PATCH] add loongarch64 port v4.
> 
> Author: xiaojuanZhai <zhaixiaojuan@loongson.cn>
> Author: meidanLi <limeidan@loongson.cn>
> Author: guoqiChen <chenguoqi@loongson.cn>
> Author: xiaolinZhao <zhaoxiaolin@loongson.cn>
> Author: Fanpeng <fanpeng@loongson.cn>
> Author: jiantaoShan <shanjiantao@loongson.cn>
> Author: xuhuiQiang <qiangxuhui@loongson.cn>
> Author: jingyunHua <huajingyun@loongson.cn>
> Author: liuxue <liuxue@loongson.cn>
> Author: wanghongliang <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/hwcap.h              |  14 +
>  arch/loongarch64/bits/posix.h              |   2 +
>  arch/loongarch64/bits/ptrace.h             |   4 +
>  arch/loongarch64/bits/reg.h                |  66 +++++
>  arch/loongarch64/bits/setjmp.h             |   1 +
>  arch/loongarch64/bits/signal.h             |  80 ++++++
>  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                |  14 +
>  arch/loongarch64/pthread_arch.h            |  13 +
>  arch/loongarch64/reloc.h                   |  27 ++
>  arch/loongarch64/syscall_arch.h            | 137 ++++++++++
>  configure                                  |   1 +
>  crt/loongarch64/crti.s                     |  15 +
>  crt/loongarch64/crtn.s                     |  12 +
>  include/elf.h                              |  66 +++++
>  src/fenv/loongarch64/fenv.S                |  72 +++++
>  src/ldso/loongarch64/dlsym.s               |   7 +
>  src/setjmp/loongarch64/longjmp.S           |  37 +++
>  src/setjmp/loongarch64/setjmp.S            |  34 +++
>  src/signal/loongarch64/restore.s           |  10 +
>  src/signal/loongarch64/sigsetjmp.s         |  29 ++
>  src/thread/loongarch64/__set_thread_area.s |   7 +
>  src/thread/loongarch64/__unmapself.s       |   7 +
>  src/thread/loongarch64/clone.s             |  47 ++++
>  src/thread/loongarch64/syscall_cp.s        |  29 ++
>  32 files changed, 1184 insertions(+)
>  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/hwcap.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 crt/loongarch64/crti.s
>  create mode 100644 crt/loongarch64/crtn.s
>  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..bf4805c9
> --- /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..d1807aca
> --- /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..264cafb5
> --- /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 __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..719c7908
> --- /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/hwcap.h b/arch/loongarch64/bits/hwcap.h
> new file mode 100644
> index 00000000..c9fa08f6
> --- /dev/null
> +++ b/arch/loongarch64/bits/hwcap.h
> @@ -0,0 +1,14 @@
> +/* HWCAP - Hardware Capabilities.
> + * Hardware information is not clear at present, leave it blank.
> + */
> +#define HWCAP_LOONGARCH_CPUCFG	(1 << 0)
> +#define HWCAP_LOONGARCH_FPU	(1 << 1)
> +#define HWCAP_LOONGARCH_LSX	(1 << 2)  /* support 128bit vectors*/
> +#define HWCAP_LOONGARCH_LASX	(1 << 3)  /* support 256bit vectors*/
> +#define HWCAP_LOONGARCH_LBT	(1 << 4)  /* support LBT*/
> +#define HWCAP_LOONGARCH_LVZ	(1 << 5)  /* support virtualization expansion*/
> +#define HWCAP_LOONGARCH_CRC32	(1 << 7)  /* support CRC32 check*/
> +#define HWCAP_LOONGARCH_AES	(1 << 6)
> +#define HWCAP_LOONGARCH_SHA1	(1 << 8)
> +#define HWCAP_LOONGARCH_SHA2	(1 << 9)
> +#define HWCAP_LOONGARCH_SHA3	(1 << 10)
> diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
> new file mode 100644
> index 00000000..8068ce98
> --- /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..741fc668
> --- /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..5d3f92c5
> --- /dev/null
> +++ b/arch/loongarch64/bits/reg.h
> @@ -0,0 +1,66 @@
> +#undef __WORDSIZE
> +#define __WORDSIZE 64
> +#define LOONGARCH64_EF_R0   0
> +#define LOONGARCH64_EF_R1   1
> +#define LOONGARCH64_EF_R2   2
> +#define LOONGARCH64_EF_R3   3
> +#define LOONGARCH64_EF_R4   4
> +#define LOONGARCH64_EF_R5   5
> +#define LOONGARCH64_EF_R6   6
> +#define LOONGARCH64_EF_R7   7
> +#define LOONGARCH64_EF_R8   8
> +#define LOONGARCH64_EF_R9   9
> +#define LOONGARCH64_EF_R10    10
> +#define LOONGARCH64_EF_R11    11
> +#define LOONGARCH64_EF_R12    12
> +#define LOONGARCH64_EF_R13    13
> +#define LOONGARCH64_EF_R14    14
> +#define LOONGARCH64_EF_R15    15
> +#define LOONGARCH64_EF_R16    16
> +#define LOONGARCH64_EF_R17    17
> +#define LOONGARCH64_EF_R18    18
> +#define LOONGARCH64_EF_R19    19
> +#define LOONGARCH64_EF_R20    20
> +#define LOONGARCH64_EF_R21    21
> +#define LOONGARCH64_EF_R22    22
> +#define LOONGARCH64_EF_R23    23
> +#define LOONGARCH64_EF_R24    24
> +#define LOONGARCH64_EF_R25    25
> +#define LOONGARCH64_EF_R26    26
> +#define LOONGARCH64_EF_R27    27
> +#define LOONGARCH64_EF_R28    28
> +#define LOONGARCH64_EF_R29    29
> +#define LOONGARCH64_EF_R30    30
> +#define LOONGARCH64_EF_R31    31
> +
> +#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
> +
> +#define EF_R0     LOONGARCH64_EF_R0
> +#define EF_R1     LOONGARCH64_EF_R1
> +#define EF_R2     LOONGARCH64_EF_R2
> +#define EF_R3     LOONGARCH64_EF_R3
> +#define EF_R4     LOONGARCH64_EF_R4
> +#define EF_R5     LOONGARCH64_EF_R5
> +#define EF_R6     LOONGARCH64_EF_R6
> +#define EF_R7     LOONGARCH64_EF_R7
> +#define EF_R8     LOONGARCH64_EF_R8
> +#define EF_R9     LOONGARCH64_EF_R9
> +#define EF_R10      LOONGARCH64_EF_R10
> +#define EF_R11      LOONGARCH64_EF_R11
> +#define EF_R12      LOONGARCH64_EF_R12
> +#define EF_R13      LOONGARCH64_EF_R13
> +#define EF_R14      LOONGARCH64_EF_R14
> +#define EF_R15      LOONGARCH64_EF_R15
> +#define EF_R16      LOONGARCH64_EF_R16
> +#define EF_R17      LOONGARCH64_EF_R17
> +#define EF_R18      LOONGARCH64_EF_R18
> +#define EF_R19      LOONGARCH64_EF_R19
> +#define EF_R20      LOONGARCH64_EF_R20
> +#define EF_R21      LOONGARCH64_EF_R21
> +#define EF_R22      LOONGARCH64_EF_R22
> +#define EF_R23      LOONGARCH64_EF_R23
> +#define EF_R24      LOONGARCH64_EF_R24
> +#define EF_R25      LOONGARCH64_EF_R25
> +#define EF_R26      LOONGARCH64_EF_R26
> +#define EF_R27      LOONGARCH64_EF_R27
> +#define EF_R28      LOONGARCH64_EF_R28
> diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
> new file mode 100644
> index 00000000..f4a7f8a3
> --- /dev/null
> +++ b/arch/loongarch64/bits/setjmp.h
> @@ -0,0 +1 @@
> +typedef unsigned long long __jmp_buf[22];
> diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
> new file mode 100644
> index 00000000..4db790e7
> --- /dev/null
> +++ b/arch/loongarch64/bits/signal.h
> @@ -0,0 +1,80 @@
> +#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
> +
> +typedef unsigned long greg_t, gregset_t[32];
> +
> +typedef struct sigcontext {
> +	unsigned long pc;
> +	gregset_t gregs;
> +	unsigned int flags;
> +	unsigned long extcontext[];
> +} mcontext_t;
> +
> +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   0x04000000
> +
> +#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..1bb147f2
> --- /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..689ff36b
> --- /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..4d4cd534
> --- /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..c806a0bf
> --- /dev/null
> +++ b/arch/loongarch64/crt_arch.h
> @@ -0,0 +1,14 @@
> +__asm__(
> +".text \n"
> +".global " START "\n"
> +".type   " START ", @function\n"
> +START ":\n"
> +"	add.w $fp, $r0,$r0\n"
> +"	or $a0, $sp, $zero\n"
> +".weak _DYNAMIC\n"
> +".hidden _DYNAMIC\n"
> +"	la.local $a1, _DYNAMIC\n"
> +"	addi.w $t7, $r0, -16\n"
> +"	and $sp, $sp, $t7\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..95ee4c7a
> --- /dev/null
> +++ b/arch/loongarch64/pthread_arch.h
> @@ -0,0 +1,13 @@
> +static inline uintptr_t __get_tp()
> +{
> +	register uintptr_t tp __asm__("tp");
> +	__asm__ ("" : "=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..2f759a34
> --- /dev/null
> +++ b/arch/loongarch64/reloc.h
> @@ -0,0 +1,27 @@
> +#ifdef __loongarch64_soft_float
> +#define FP_SUFFIX "-sf"
> +#else
> +#define FP_SUFFIX ""
> +#endif
> +
> +#define LDSO_ARCH "loongarch64"  FP_SUFFIX
> +
> +#define TPOFF_K (0x0)
> +
> +#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" \
> +	"	or %0, $t1, $zero \n" \
> +	: "=r"(*(fp)) : : "memory" )
> diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
> new file mode 100644
> index 00000000..ddd29578
> --- /dev/null
> +++ b/arch/loongarch64/syscall_arch.h
> @@ -0,0 +1,137 @@
> +#define __SYSCALL_LL_E(x) (x)
> +#define __SYSCALL_LL_O(x) (x)
> +
> +#define SYSCALL_CLOBBERLIST \
> +	"$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_2.6"
> +
> +#define IPC_64  0
> diff --git a/configure b/configure
> index 6f5453f5..aac0c467 100755
> --- a/configure
> +++ b/configure
> @@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
>  riscv64*) ARCH=riscv64 ;;
>  sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
>  s390x*) ARCH=s390x ;;
> +loongarch64*) ARCH=loongarch64 ;;
>  unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
>  *) fail "$0: unknown or unsupported target \"$target\"" ;;
>  esac
> diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
> new file mode 100644
> index 00000000..96a754d3
> --- /dev/null
> +++ b/crt/loongarch64/crti.s
> @@ -0,0 +1,15 @@
> +.section .init
> +.global _init
> +_init:
> +	addi.d	$r3,$r3,-16
> +	st.d	$fp,$r3,0
> +	st.d	$ra,$r3,8
> +	addi.d  $fp,$r3,16
> +
> +.section .fini
> +.global _fini
> +_fini:
> +	addi.d	$r3,$r3,-16
> +	st.d	$fp,$r3,0
> +	st.d	$ra,$r3,8
> +	addi.d  $fp,$r3,16
> diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
> new file mode 100644
> index 00000000..bffb18f4
> --- /dev/null
> +++ b/crt/loongarch64/crtn.s
> @@ -0,0 +1,12 @@
> +.section .init
> +	ld.d	$fp,$r3,0
> +	ld.d	$ra,$r3,8
> +	addi.d	$r3,$r3,16
> +	jirl	$r0,$ra,0
> +
> +
> +.section .fini
> +	ld.d	$fp,$r3,0
> +	ld.d	$ra,$r3,8
> +	addi.d	$r3,$r3,16
> +	jirl	$r0,$ra,0
> diff --git a/include/elf.h b/include/elf.h
> index 86e2f0bb..69b01ff4 100644
> --- a/include/elf.h
> +++ b/include/elf.h
> @@ -697,6 +697,11 @@ 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
>  
>  
>  
> @@ -3288,6 +3293,67 @@ enum
>  #define R_RISCV_SET32           56
>  #define R_RISCV_32_PCREL        57
>  
> +/* LoongISA ELF Flags */
> +#define EM_LOONGARCH  258
> +
> +#define EF_LARCH_ABI             0x0003
> +#define EF_LARCH_ABI_LP64        0x0003
> +#define EF_LARCH_ABI_LP32        0x0001
> +
> +/* Loongarch specific dynamic relocations. */
> +#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
> +
>  #ifdef __cplusplus
>  }
>  #endif
> diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
> new file mode 100644
> index 00000000..049234be
> --- /dev/null
> +++ b/src/fenv/loongarch64/fenv.S
> @@ -0,0 +1,72 @@
> +#ifndef __loongarch_soft_float
> +
> +.global	feclearexcept
> +.type	feclearexcept,@function
> +feclearexcept:
> +	li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
> +	and     $a0, $a0, $a1
> +	movfcsr2gr $a1, $r0
> +	or	$a1, $a1, $a0
> +	xor	$a1, $a1, $a0
> +	movgr2fcsr $r0, $a1
> +	li.w    $v0, 0
> +	jirl    $zero, $ra, 0
> +
> +.global	feraiseexcept
> +.type	feraiseexcept,@function
> +feraiseexcept:
> +	li.w    $a1, 0x1f0000
> +	and     $a0, $a0, $a1
> +	movfcsr2gr $a1, $r0
> +	or	$a1, $a1, $a0
> +	movgr2fcsr $r0, $a1
> +        li.w    $v0, 0
> +	jirl    $zero, $ra, 0
> +
> +.global	fetestexcept
> +.type	fetestexcept,@function
> +fetestexcept:
> +        li.w    $a1, 0x1f0000
> +        and     $a0, $a0, $a1
> +	movfcsr2gr $a1, $r0
> +        and     $v0, $a1, $a0
> +	jirl    $zero, $ra, 0
> +
> +.global	fegetround
> +.type	fegetround,@function
> +fegetround:
> +	movfcsr2gr $v0, $r0
> +        andi    $v0, $v0, 0x300  //fcsr0.RM
> +	jirl    $zero, $ra, 0
> +
> +.global	__fesetround
> +.hidden __fesetround
> +.type	__fesetround,@function
> +__fesetround:
> +	movfcsr2gr $a1, $r0
> +	li.w	$a2, -769  //0xfffffcff
> +	and	$a1, $a1, $a2
> +	or	$a1, $a1, $a0
> +	movgr2fcsr $r0, $a1
> +        li.w    $v0, 0
> +	jirl    $zero, $ra, 0
> +
> +.global	fegetenv
> +.type	fegetenv,@function
> +fegetenv:
> +	movfcsr2gr $a1, $r0
> +	st.w	$a1, $a0, 0
> +        li.w    $v0, 0
> +	jirl    $zero, $ra, 0
> +
> +.global	fesetenv
> +.type	fesetenv,@function
> +fesetenv:
> +	addi.d	$a1, $a0, 1
> +	beq	$a1, $r0, 1f
> +	ld.w	$a1, $a0, 0
> +1:	movgr2fcsr $r0, $a1
> +        li.w    $v0, 0
> +	jirl    $zero, $ra, 0
> +
> +#endif
> diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
> new file mode 100644
> index 00000000..5f51ed85
> --- /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	$r16, __dlsym
> +	jirl	$r0, $r16, 0
> diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
> new file mode 100644
> index 00000000..41d897ed
> --- /dev/null
> +++ b/src/setjmp/loongarch64/longjmp.S
> @@ -0,0 +1,37 @@
> +.global    _longjmp
> +.global    longjmp
> +.type    _longjmp,@function
> +.type    longjmp,@function
> +_longjmp:
> +longjmp:
> +	add.d   $t5, $a0, $zero
> +	add.d   $v0, $a1, $zero
> +
> +	bne     $v0, $zero, 1f
> +	addi.d  $v0, $v0, 1
> +
> +1:
> +	ld.d    $ra, $t5, 0
> +	ld.d    $sp, $t5, 8
> +	ld.d    $r21,$t5, 16
> +	ld.d    $fp, $t5, 24
> +	ld.d    $s0, $t5, 32
> +	ld.d    $s1, $t5, 40
> +	ld.d    $s2, $t5, 48
> +	ld.d    $s3, $t5, 56
> +	ld.d    $s4, $t5, 64
> +	ld.d    $s5, $t5, 72
> +	ld.d    $s6, $t5, 80
> +	ld.d    $s7, $t5, 88
> +	ld.d    $s8, $t5, 96
> +#ifndef __loongarch64_soft_float
> +	fld.d   $fs0, $t5, 104
> +	fld.d   $fs1, $t5, 112
> +	fld.d   $fs2, $t5, 120
> +	fld.d   $fs3, $t5, 128
> +	fld.d   $fs4, $t5, 136
> +	fld.d   $fs5, $t5, 144
> +	fld.d   $fs6, $t5, 152
> +	fld.d   $fs7, $t5, 160
> +#endif
> +	jirl    $zero, $ra, 0
> diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
> new file mode 100644
> index 00000000..8dca3cb8
> --- /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 __loongarch64_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
> +	xor     $v0, $v0, $v0
> +	jirl    $zero, $ra, 0
> diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
> new file mode 100644
> index 00000000..9bf015a0
> --- /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:
> +	ori	$a7, $zero, 139
> +	syscall	0
> diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
> new file mode 100644
> index 00000000..d53f334a
> --- /dev/null
> +++ b/src/signal/loongarch64/sigsetjmp.s
> @@ -0,0 +1,29 @@
> +.global sigsetjmp
> +.global __sigsetjmp
> +.type   sigsetjmp,@function
> +.type   __sigsetjmp,@function
> +sigsetjmp:
> +__sigsetjmp:
> +        or $t5, $a0, $zero
> +        or $t6, $a1, $zero
> +
> +        # comparing save mask with 0, if equals to 0 then
> +        # sigsetjmp is equal to setjmp.
> +        beq     $t6, $zero, 1f
> +        st.d    $ra, $t5, 168
> +
> +        # save base of got so that we can use it later
> +        # once we return from 'longjmp'
> +        la.global  $t8, setjmp
> +        jirl    $ra, $t8, 0
> +
> +        or      $v1, $v0, $zero # Return from 'setjmp' or 'longjmp'
> +        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
> +        or      $a0, $t5, $zero
> +
> +.hidden __sigsetjmp_tail
> +        la.global  $t8, __sigsetjmp_tail
> +        jirl       $zero, $t8, 0
> +1:
> +        la.global  $t8, setjmp
> +        jirl       $zero, $t8, 0
> diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
> new file mode 100644
> index 00000000..421cd381
> --- /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:
> +	or	$tp, $a0, $zero
> +	ori	$a0, $zero, 0
> +	jirl	$zero, $ra, 0
> diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
> new file mode 100644
> index 00000000..b77e6d1d
> --- /dev/null
> +++ b/src/thread/loongarch64/__unmapself.s
> @@ -0,0 +1,7 @@
> +.global	__unmapself
> +.type	__unmapself, @function
> +__unmapself:
> +	li.d	$a7, 215
> +	syscall	0				# call munmap
> +	li.d	$a7, 93
> +	syscall	0				# call exit
> diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
> new file mode 100644
> index 00000000..ec920c7b
> --- /dev/null
> +++ b/src/thread/loongarch64/clone.s
> @@ -0,0 +1,47 @@
> +#__clone(func, stack, flags, arg, ptid, tls, ctid)
> +#         a0,    a1,   a2,    a3,  a4,  a5,   a6
> +# sys_clone3(struct clone_args *cl_args, size_t size)
> +#                                 a0             a1
> +
> +.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
> +
> +	li.d	$t0, ~0x004000ff  # mask CSIGNAL and CLONE_DETACHED
> +	and	$t1, $a2, $t0     # cl_args.flags
> +	li.d	$t0, 0x000000ff   # CSIGNAL
> +	and	$t2, $a2, $t0     # cl_args.exit_signal
> +
> +	bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
> +	addi.d	$sp, $sp, -88   # struct clone_args
> +	st.d	$t1, $sp, 0     # flags
> +	st.d	$a4, $sp, 8     # pidfd
> +	st.d	$a6, $sp, 16    # child_tid
> +	st.d	$a4, $sp, 24    # parent_tid
> +	st.d	$t2, $sp, 32    # exit_signal
> +	st.d	$a1, $sp, 40    # stack
> +	st.d	$zero, $sp, 48  # stack_size
> +	st.d	$a5, $sp, 56    # tls
> +	st.d	$zero, $sp, 64  # set_tid
> +	st.d	$zero, $sp, 72  # set_tid_size
> +	st.d	$zero, $sp, 80  # cgroup
> +
> +	move	$a0, $sp
> +	li.d	$a1, 88
> +	li.d	$a7, 435	# __NR_clone3
> +	syscall 0		# call clone3
> +
> +	beqz	$a0, 1f		# whether child process
> +	addi.d	$sp, $sp, 88
> +	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
> +	li.d	$a7, 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..3903ed2c
> --- /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
> +	or	$t8, $a1, $zero     # reserve system call number
> +	or	$a0, $a2, $zero
> +	or	$a1, $a3, $zero
> +	or	$a2, $a4, $zero
> +	or	$a3, $a5, $zero
> +	or	$a4, $a6, $zero
> +	or	$a5, $a7, $zero
> +	or	$a7, $t8, $zero
> +	syscall	0
> +__cp_end:
> +	jirl	$zero, $ra, 0
> +__cp_cancel:
> +	la.local $t8, __cancel
> +	jirl	$zero, $t8, 0
> -- 
> 2.34.1
> 


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [musl] Re: add loongarch64 port v4
  2022-06-23  1:59       ` Rich Felker
@ 2022-07-05 12:56         ` 王洪亮
  2022-07-16  8:13           ` 王洪亮
  0 siblings, 1 reply; 7+ messages in thread
From: 王洪亮 @ 2022-07-05 12:56 UTC (permalink / raw)
  To: musl

[-- Attachment #1: Type: text/plain, Size: 53258 bytes --]

Hi, Rich

Have you reviewed it?
This patch has some new problems?

在 2022/6/23 上午9:59, Rich Felker 写道:
> Hi. I just haven't gotten to reviewing it again. I'll try to take a
> good look in the next day or two.
>
> On Thu, Jun 23, 2022 at 09:30:55AM +0800, 王洪亮 wrote:
>> Hi,  Rich
>>
>>   this patch has any other problems need to be modified?
>>
>> Looking forward to your reply. thanks.
>>
>>
>> Hongliang Wang
>>
>> 在 2022/6/20 下午5:49, 王洪亮 写道:
>>> Hi, Rich
>>>
>>> 1. this patch has any other problems need to be modified?
>>>
>>> 2.what are the suggestions for support LA32 later?
>>>
>>>
>>> 在 2022/6/14 下午3:23, 王洪亮 写道:
>>>> Hi,
>>>>
>>>> 1. this patch has any other problems need to be modified?
>>>>
>>>> 2.what are the suggestions for support LA32?
>>>>
>>>>
>>>> 在 2022/6/8 上午11:56, 王洪亮 写道:
>>>>> Hi,
>>>>>
>>>>> I published loongarch64 port v4 in
>>>>> https://github.com/loongson/musl/tree/loongarch-v2.0.
>>>>>
>>>>> fixed the following problems:
>>>>>
>>>>> 1.fixed  the extension field of struct mcontext
>>>>>
>>>>> 2.removed arch/loongarch64/kstat.h
>>>>>
>>>>> 3.deleted the incorrect definition in arch/loongarch64/reloc.h
>>>>>
>>>>> 4.optimize  dlsym
>>>>>
>>>>> please code review if there are any other problems ? thanks.
>>>>>
>>>>> I have one questions:
>>>>>
>>>>> Through  add "long__uc_pad" in struct ucontext_t  to meet the
>>>>> extcontext[] 16 bytes alignment,
>>>>>
>>>>> if run in loongarch32, this method not meet the  16 bytes
>>>>> alignment requirement. how to do it ?
>>>>>
>>>>>
>>>>> Hongliang Wang.
>>>>>
>> >From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17 00:00:00 2001
>> From: wanghongliang <wanghongliang@loongson.cn>
>> Date: Wed, 8 Jun 2022 01:42:12 +0800
>> Subject: [PATCH] add loongarch64 port v4.
>>
>> Author: xiaojuanZhai <zhaixiaojuan@loongson.cn>
>> Author: meidanLi <limeidan@loongson.cn>
>> Author: guoqiChen <chenguoqi@loongson.cn>
>> Author: xiaolinZhao <zhaoxiaolin@loongson.cn>
>> Author: Fanpeng <fanpeng@loongson.cn>
>> Author: jiantaoShan <shanjiantao@loongson.cn>
>> Author: xuhuiQiang <qiangxuhui@loongson.cn>
>> Author: jingyunHua <huajingyun@loongson.cn>
>> Author: liuxue <liuxue@loongson.cn>
>> Author: wanghongliang <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/hwcap.h              |  14 +
>>   arch/loongarch64/bits/posix.h              |   2 +
>>   arch/loongarch64/bits/ptrace.h             |   4 +
>>   arch/loongarch64/bits/reg.h                |  66 +++++
>>   arch/loongarch64/bits/setjmp.h             |   1 +
>>   arch/loongarch64/bits/signal.h             |  80 ++++++
>>   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                |  14 +
>>   arch/loongarch64/pthread_arch.h            |  13 +
>>   arch/loongarch64/reloc.h                   |  27 ++
>>   arch/loongarch64/syscall_arch.h            | 137 ++++++++++
>>   configure                                  |   1 +
>>   crt/loongarch64/crti.s                     |  15 +
>>   crt/loongarch64/crtn.s                     |  12 +
>>   include/elf.h                              |  66 +++++
>>   src/fenv/loongarch64/fenv.S                |  72 +++++
>>   src/ldso/loongarch64/dlsym.s               |   7 +
>>   src/setjmp/loongarch64/longjmp.S           |  37 +++
>>   src/setjmp/loongarch64/setjmp.S            |  34 +++
>>   src/signal/loongarch64/restore.s           |  10 +
>>   src/signal/loongarch64/sigsetjmp.s         |  29 ++
>>   src/thread/loongarch64/__set_thread_area.s |   7 +
>>   src/thread/loongarch64/__unmapself.s       |   7 +
>>   src/thread/loongarch64/clone.s             |  47 ++++
>>   src/thread/loongarch64/syscall_cp.s        |  29 ++
>>   32 files changed, 1184 insertions(+)
>>   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/hwcap.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 crt/loongarch64/crti.s
>>   create mode 100644 crt/loongarch64/crtn.s
>>   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..bf4805c9
>> --- /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..d1807aca
>> --- /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..264cafb5
>> --- /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 __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..719c7908
>> --- /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/hwcap.h b/arch/loongarch64/bits/hwcap.h
>> new file mode 100644
>> index 00000000..c9fa08f6
>> --- /dev/null
>> +++ b/arch/loongarch64/bits/hwcap.h
>> @@ -0,0 +1,14 @@
>> +/* HWCAP - Hardware Capabilities.
>> + * Hardware information is not clear at present, leave it blank.
>> + */
>> +#define HWCAP_LOONGARCH_CPUCFG	(1 << 0)
>> +#define HWCAP_LOONGARCH_FPU	(1 << 1)
>> +#define HWCAP_LOONGARCH_LSX	(1 << 2)  /* support 128bit vectors*/
>> +#define HWCAP_LOONGARCH_LASX	(1 << 3)  /* support 256bit vectors*/
>> +#define HWCAP_LOONGARCH_LBT	(1 << 4)  /* support LBT*/
>> +#define HWCAP_LOONGARCH_LVZ	(1 << 5)  /* support virtualization expansion*/
>> +#define HWCAP_LOONGARCH_CRC32	(1 << 7)  /* support CRC32 check*/
>> +#define HWCAP_LOONGARCH_AES	(1 << 6)
>> +#define HWCAP_LOONGARCH_SHA1	(1 << 8)
>> +#define HWCAP_LOONGARCH_SHA2	(1 << 9)
>> +#define HWCAP_LOONGARCH_SHA3	(1 << 10)
>> diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
>> new file mode 100644
>> index 00000000..8068ce98
>> --- /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..741fc668
>> --- /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..5d3f92c5
>> --- /dev/null
>> +++ b/arch/loongarch64/bits/reg.h
>> @@ -0,0 +1,66 @@
>> +#undef __WORDSIZE
>> +#define __WORDSIZE 64
>> +#define LOONGARCH64_EF_R0   0
>> +#define LOONGARCH64_EF_R1   1
>> +#define LOONGARCH64_EF_R2   2
>> +#define LOONGARCH64_EF_R3   3
>> +#define LOONGARCH64_EF_R4   4
>> +#define LOONGARCH64_EF_R5   5
>> +#define LOONGARCH64_EF_R6   6
>> +#define LOONGARCH64_EF_R7   7
>> +#define LOONGARCH64_EF_R8   8
>> +#define LOONGARCH64_EF_R9   9
>> +#define LOONGARCH64_EF_R10    10
>> +#define LOONGARCH64_EF_R11    11
>> +#define LOONGARCH64_EF_R12    12
>> +#define LOONGARCH64_EF_R13    13
>> +#define LOONGARCH64_EF_R14    14
>> +#define LOONGARCH64_EF_R15    15
>> +#define LOONGARCH64_EF_R16    16
>> +#define LOONGARCH64_EF_R17    17
>> +#define LOONGARCH64_EF_R18    18
>> +#define LOONGARCH64_EF_R19    19
>> +#define LOONGARCH64_EF_R20    20
>> +#define LOONGARCH64_EF_R21    21
>> +#define LOONGARCH64_EF_R22    22
>> +#define LOONGARCH64_EF_R23    23
>> +#define LOONGARCH64_EF_R24    24
>> +#define LOONGARCH64_EF_R25    25
>> +#define LOONGARCH64_EF_R26    26
>> +#define LOONGARCH64_EF_R27    27
>> +#define LOONGARCH64_EF_R28    28
>> +#define LOONGARCH64_EF_R29    29
>> +#define LOONGARCH64_EF_R30    30
>> +#define LOONGARCH64_EF_R31    31
>> +
>> +#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
>> +
>> +#define EF_R0     LOONGARCH64_EF_R0
>> +#define EF_R1     LOONGARCH64_EF_R1
>> +#define EF_R2     LOONGARCH64_EF_R2
>> +#define EF_R3     LOONGARCH64_EF_R3
>> +#define EF_R4     LOONGARCH64_EF_R4
>> +#define EF_R5     LOONGARCH64_EF_R5
>> +#define EF_R6     LOONGARCH64_EF_R6
>> +#define EF_R7     LOONGARCH64_EF_R7
>> +#define EF_R8     LOONGARCH64_EF_R8
>> +#define EF_R9     LOONGARCH64_EF_R9
>> +#define EF_R10      LOONGARCH64_EF_R10
>> +#define EF_R11      LOONGARCH64_EF_R11
>> +#define EF_R12      LOONGARCH64_EF_R12
>> +#define EF_R13      LOONGARCH64_EF_R13
>> +#define EF_R14      LOONGARCH64_EF_R14
>> +#define EF_R15      LOONGARCH64_EF_R15
>> +#define EF_R16      LOONGARCH64_EF_R16
>> +#define EF_R17      LOONGARCH64_EF_R17
>> +#define EF_R18      LOONGARCH64_EF_R18
>> +#define EF_R19      LOONGARCH64_EF_R19
>> +#define EF_R20      LOONGARCH64_EF_R20
>> +#define EF_R21      LOONGARCH64_EF_R21
>> +#define EF_R22      LOONGARCH64_EF_R22
>> +#define EF_R23      LOONGARCH64_EF_R23
>> +#define EF_R24      LOONGARCH64_EF_R24
>> +#define EF_R25      LOONGARCH64_EF_R25
>> +#define EF_R26      LOONGARCH64_EF_R26
>> +#define EF_R27      LOONGARCH64_EF_R27
>> +#define EF_R28      LOONGARCH64_EF_R28
>> diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
>> new file mode 100644
>> index 00000000..f4a7f8a3
>> --- /dev/null
>> +++ b/arch/loongarch64/bits/setjmp.h
>> @@ -0,0 +1 @@
>> +typedef unsigned long long __jmp_buf[22];
>> diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
>> new file mode 100644
>> index 00000000..4db790e7
>> --- /dev/null
>> +++ b/arch/loongarch64/bits/signal.h
>> @@ -0,0 +1,80 @@
>> +#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
>> +
>> +typedef unsigned long greg_t, gregset_t[32];
>> +
>> +typedef struct sigcontext {
>> +	unsigned long pc;
>> +	gregset_t gregs;
>> +	unsigned int flags;
>> +	unsigned long extcontext[];
>> +} mcontext_t;
>> +
>> +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   0x04000000
>> +
>> +#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..1bb147f2
>> --- /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..689ff36b
>> --- /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..4d4cd534
>> --- /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..c806a0bf
>> --- /dev/null
>> +++ b/arch/loongarch64/crt_arch.h
>> @@ -0,0 +1,14 @@
>> +__asm__(
>> +".text \n"
>> +".global " START "\n"
>> +".type   " START ", @function\n"
>> +START ":\n"
>> +"	add.w $fp, $r0,$r0\n"
>> +"	or $a0, $sp, $zero\n"
>> +".weak _DYNAMIC\n"
>> +".hidden _DYNAMIC\n"
>> +"	la.local $a1, _DYNAMIC\n"
>> +"	addi.w $t7, $r0, -16\n"
>> +"	and $sp, $sp, $t7\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..95ee4c7a
>> --- /dev/null
>> +++ b/arch/loongarch64/pthread_arch.h
>> @@ -0,0 +1,13 @@
>> +static inline uintptr_t __get_tp()
>> +{
>> +	register uintptr_t tp __asm__("tp");
>> +	__asm__ ("" : "=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..2f759a34
>> --- /dev/null
>> +++ b/arch/loongarch64/reloc.h
>> @@ -0,0 +1,27 @@
>> +#ifdef __loongarch64_soft_float
>> +#define FP_SUFFIX "-sf"
>> +#else
>> +#define FP_SUFFIX ""
>> +#endif
>> +
>> +#define LDSO_ARCH "loongarch64"  FP_SUFFIX
>> +
>> +#define TPOFF_K (0x0)
>> +
>> +#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" \
>> +	"	or %0, $t1, $zero \n" \
>> +	: "=r"(*(fp)) : : "memory" )
>> diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
>> new file mode 100644
>> index 00000000..ddd29578
>> --- /dev/null
>> +++ b/arch/loongarch64/syscall_arch.h
>> @@ -0,0 +1,137 @@
>> +#define __SYSCALL_LL_E(x) (x)
>> +#define __SYSCALL_LL_O(x) (x)
>> +
>> +#define SYSCALL_CLOBBERLIST \
>> +	"$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_2.6"
>> +
>> +#define IPC_64  0
>> diff --git a/configure b/configure
>> index 6f5453f5..aac0c467 100755
>> --- a/configure
>> +++ b/configure
>> @@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
>>   riscv64*) ARCH=riscv64 ;;
>>   sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
>>   s390x*) ARCH=s390x ;;
>> +loongarch64*) ARCH=loongarch64 ;;
>>   unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
>>   *) fail "$0: unknown or unsupported target \"$target\"" ;;
>>   esac
>> diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
>> new file mode 100644
>> index 00000000..96a754d3
>> --- /dev/null
>> +++ b/crt/loongarch64/crti.s
>> @@ -0,0 +1,15 @@
>> +.section .init
>> +.global _init
>> +_init:
>> +	addi.d	$r3,$r3,-16
>> +	st.d	$fp,$r3,0
>> +	st.d	$ra,$r3,8
>> +	addi.d  $fp,$r3,16
>> +
>> +.section .fini
>> +.global _fini
>> +_fini:
>> +	addi.d	$r3,$r3,-16
>> +	st.d	$fp,$r3,0
>> +	st.d	$ra,$r3,8
>> +	addi.d  $fp,$r3,16
>> diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
>> new file mode 100644
>> index 00000000..bffb18f4
>> --- /dev/null
>> +++ b/crt/loongarch64/crtn.s
>> @@ -0,0 +1,12 @@
>> +.section .init
>> +	ld.d	$fp,$r3,0
>> +	ld.d	$ra,$r3,8
>> +	addi.d	$r3,$r3,16
>> +	jirl	$r0,$ra,0
>> +
>> +
>> +.section .fini
>> +	ld.d	$fp,$r3,0
>> +	ld.d	$ra,$r3,8
>> +	addi.d	$r3,$r3,16
>> +	jirl	$r0,$ra,0
>> diff --git a/include/elf.h b/include/elf.h
>> index 86e2f0bb..69b01ff4 100644
>> --- a/include/elf.h
>> +++ b/include/elf.h
>> @@ -697,6 +697,11 @@ 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
>>   
>>   
>>   
>> @@ -3288,6 +3293,67 @@ enum
>>   #define R_RISCV_SET32           56
>>   #define R_RISCV_32_PCREL        57
>>   
>> +/* LoongISA ELF Flags */
>> +#define EM_LOONGARCH  258
>> +
>> +#define EF_LARCH_ABI             0x0003
>> +#define EF_LARCH_ABI_LP64        0x0003
>> +#define EF_LARCH_ABI_LP32        0x0001
>> +
>> +/* Loongarch specific dynamic relocations. */
>> +#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
>> +
>>   #ifdef __cplusplus
>>   }
>>   #endif
>> diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
>> new file mode 100644
>> index 00000000..049234be
>> --- /dev/null
>> +++ b/src/fenv/loongarch64/fenv.S
>> @@ -0,0 +1,72 @@
>> +#ifndef __loongarch_soft_float
>> +
>> +.global	feclearexcept
>> +.type	feclearexcept,@function
>> +feclearexcept:
>> +	li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
>> +	and     $a0, $a0, $a1
>> +	movfcsr2gr $a1, $r0
>> +	or	$a1, $a1, $a0
>> +	xor	$a1, $a1, $a0
>> +	movgr2fcsr $r0, $a1
>> +	li.w    $v0, 0
>> +	jirl    $zero, $ra, 0
>> +
>> +.global	feraiseexcept
>> +.type	feraiseexcept,@function
>> +feraiseexcept:
>> +	li.w    $a1, 0x1f0000
>> +	and     $a0, $a0, $a1
>> +	movfcsr2gr $a1, $r0
>> +	or	$a1, $a1, $a0
>> +	movgr2fcsr $r0, $a1
>> +        li.w    $v0, 0
>> +	jirl    $zero, $ra, 0
>> +
>> +.global	fetestexcept
>> +.type	fetestexcept,@function
>> +fetestexcept:
>> +        li.w    $a1, 0x1f0000
>> +        and     $a0, $a0, $a1
>> +	movfcsr2gr $a1, $r0
>> +        and     $v0, $a1, $a0
>> +	jirl    $zero, $ra, 0
>> +
>> +.global	fegetround
>> +.type	fegetround,@function
>> +fegetround:
>> +	movfcsr2gr $v0, $r0
>> +        andi    $v0, $v0, 0x300  //fcsr0.RM
>> +	jirl    $zero, $ra, 0
>> +
>> +.global	__fesetround
>> +.hidden __fesetround
>> +.type	__fesetround,@function
>> +__fesetround:
>> +	movfcsr2gr $a1, $r0
>> +	li.w	$a2, -769  //0xfffffcff
>> +	and	$a1, $a1, $a2
>> +	or	$a1, $a1, $a0
>> +	movgr2fcsr $r0, $a1
>> +        li.w    $v0, 0
>> +	jirl    $zero, $ra, 0
>> +
>> +.global	fegetenv
>> +.type	fegetenv,@function
>> +fegetenv:
>> +	movfcsr2gr $a1, $r0
>> +	st.w	$a1, $a0, 0
>> +        li.w    $v0, 0
>> +	jirl    $zero, $ra, 0
>> +
>> +.global	fesetenv
>> +.type	fesetenv,@function
>> +fesetenv:
>> +	addi.d	$a1, $a0, 1
>> +	beq	$a1, $r0, 1f
>> +	ld.w	$a1, $a0, 0
>> +1:	movgr2fcsr $r0, $a1
>> +        li.w    $v0, 0
>> +	jirl    $zero, $ra, 0
>> +
>> +#endif
>> diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
>> new file mode 100644
>> index 00000000..5f51ed85
>> --- /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	$r16, __dlsym
>> +	jirl	$r0, $r16, 0
>> diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
>> new file mode 100644
>> index 00000000..41d897ed
>> --- /dev/null
>> +++ b/src/setjmp/loongarch64/longjmp.S
>> @@ -0,0 +1,37 @@
>> +.global    _longjmp
>> +.global    longjmp
>> +.type    _longjmp,@function
>> +.type    longjmp,@function
>> +_longjmp:
>> +longjmp:
>> +	add.d   $t5, $a0, $zero
>> +	add.d   $v0, $a1, $zero
>> +
>> +	bne     $v0, $zero, 1f
>> +	addi.d  $v0, $v0, 1
>> +
>> +1:
>> +	ld.d    $ra, $t5, 0
>> +	ld.d    $sp, $t5, 8
>> +	ld.d    $r21,$t5, 16
>> +	ld.d    $fp, $t5, 24
>> +	ld.d    $s0, $t5, 32
>> +	ld.d    $s1, $t5, 40
>> +	ld.d    $s2, $t5, 48
>> +	ld.d    $s3, $t5, 56
>> +	ld.d    $s4, $t5, 64
>> +	ld.d    $s5, $t5, 72
>> +	ld.d    $s6, $t5, 80
>> +	ld.d    $s7, $t5, 88
>> +	ld.d    $s8, $t5, 96
>> +#ifndef __loongarch64_soft_float
>> +	fld.d   $fs0, $t5, 104
>> +	fld.d   $fs1, $t5, 112
>> +	fld.d   $fs2, $t5, 120
>> +	fld.d   $fs3, $t5, 128
>> +	fld.d   $fs4, $t5, 136
>> +	fld.d   $fs5, $t5, 144
>> +	fld.d   $fs6, $t5, 152
>> +	fld.d   $fs7, $t5, 160
>> +#endif
>> +	jirl    $zero, $ra, 0
>> diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
>> new file mode 100644
>> index 00000000..8dca3cb8
>> --- /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 __loongarch64_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
>> +	xor     $v0, $v0, $v0
>> +	jirl    $zero, $ra, 0
>> diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
>> new file mode 100644
>> index 00000000..9bf015a0
>> --- /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:
>> +	ori	$a7, $zero, 139
>> +	syscall	0
>> diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
>> new file mode 100644
>> index 00000000..d53f334a
>> --- /dev/null
>> +++ b/src/signal/loongarch64/sigsetjmp.s
>> @@ -0,0 +1,29 @@
>> +.global sigsetjmp
>> +.global __sigsetjmp
>> +.type   sigsetjmp,@function
>> +.type   __sigsetjmp,@function
>> +sigsetjmp:
>> +__sigsetjmp:
>> +        or $t5, $a0, $zero
>> +        or $t6, $a1, $zero
>> +
>> +        # comparing save mask with 0, if equals to 0 then
>> +        # sigsetjmp is equal to setjmp.
>> +        beq     $t6, $zero, 1f
>> +        st.d    $ra, $t5, 168
>> +
>> +        # save base of got so that we can use it later
>> +        # once we return from 'longjmp'
>> +        la.global  $t8, setjmp
>> +        jirl    $ra, $t8, 0
>> +
>> +        or      $v1, $v0, $zero # Return from 'setjmp' or 'longjmp'
>> +        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
>> +        or      $a0, $t5, $zero
>> +
>> +.hidden __sigsetjmp_tail
>> +        la.global  $t8, __sigsetjmp_tail
>> +        jirl       $zero, $t8, 0
>> +1:
>> +        la.global  $t8, setjmp
>> +        jirl       $zero, $t8, 0
>> diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
>> new file mode 100644
>> index 00000000..421cd381
>> --- /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:
>> +	or	$tp, $a0, $zero
>> +	ori	$a0, $zero, 0
>> +	jirl	$zero, $ra, 0
>> diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
>> new file mode 100644
>> index 00000000..b77e6d1d
>> --- /dev/null
>> +++ b/src/thread/loongarch64/__unmapself.s
>> @@ -0,0 +1,7 @@
>> +.global	__unmapself
>> +.type	__unmapself, @function
>> +__unmapself:
>> +	li.d	$a7, 215
>> +	syscall	0				# call munmap
>> +	li.d	$a7, 93
>> +	syscall	0				# call exit
>> diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
>> new file mode 100644
>> index 00000000..ec920c7b
>> --- /dev/null
>> +++ b/src/thread/loongarch64/clone.s
>> @@ -0,0 +1,47 @@
>> +#__clone(func, stack, flags, arg, ptid, tls, ctid)
>> +#         a0,    a1,   a2,    a3,  a4,  a5,   a6
>> +# sys_clone3(struct clone_args *cl_args, size_t size)
>> +#                                 a0             a1
>> +
>> +.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
>> +
>> +	li.d	$t0, ~0x004000ff  # mask CSIGNAL and CLONE_DETACHED
>> +	and	$t1, $a2, $t0     # cl_args.flags
>> +	li.d	$t0, 0x000000ff   # CSIGNAL
>> +	and	$t2, $a2, $t0     # cl_args.exit_signal
>> +
>> +	bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
>> +	addi.d	$sp, $sp, -88   # struct clone_args
>> +	st.d	$t1, $sp, 0     # flags
>> +	st.d	$a4, $sp, 8     # pidfd
>> +	st.d	$a6, $sp, 16    # child_tid
>> +	st.d	$a4, $sp, 24    # parent_tid
>> +	st.d	$t2, $sp, 32    # exit_signal
>> +	st.d	$a1, $sp, 40    # stack
>> +	st.d	$zero, $sp, 48  # stack_size
>> +	st.d	$a5, $sp, 56    # tls
>> +	st.d	$zero, $sp, 64  # set_tid
>> +	st.d	$zero, $sp, 72  # set_tid_size
>> +	st.d	$zero, $sp, 80  # cgroup
>> +
>> +	move	$a0, $sp
>> +	li.d	$a1, 88
>> +	li.d	$a7, 435	# __NR_clone3
>> +	syscall 0		# call clone3
>> +
>> +	beqz	$a0, 1f		# whether child process
>> +	addi.d	$sp, $sp, 88
>> +	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
>> +	li.d	$a7, 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..3903ed2c
>> --- /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
>> +	or	$t8, $a1, $zero     # reserve system call number
>> +	or	$a0, $a2, $zero
>> +	or	$a1, $a3, $zero
>> +	or	$a2, $a4, $zero
>> +	or	$a3, $a5, $zero
>> +	or	$a4, $a6, $zero
>> +	or	$a5, $a7, $zero
>> +	or	$a7, $t8, $zero
>> +	syscall	0
>> +__cp_end:
>> +	jirl	$zero, $ra, 0
>> +__cp_cancel:
>> +	la.local $t8, __cancel
>> +	jirl	$zero, $t8, 0
>> -- 
>> 2.34.1
>>

[-- Attachment #2: 0001-add-loongarch64-port-v4.patch --]
[-- Type: text/x-patch, Size: 47132 bytes --]

From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Wed, 8 Jun 2022 01:42:12 +0800
Subject: [PATCH] add loongarch64 port v4.

Author: xiaojuanZhai <zhaixiaojuan@loongson.cn>
Author: meidanLi <limeidan@loongson.cn>
Author: guoqiChen <chenguoqi@loongson.cn>
Author: xiaolinZhao <zhaoxiaolin@loongson.cn>
Author: Fanpeng <fanpeng@loongson.cn>
Author: jiantaoShan <shanjiantao@loongson.cn>
Author: xuhuiQiang <qiangxuhui@loongson.cn>
Author: jingyunHua <huajingyun@loongson.cn>
Author: liuxue <liuxue@loongson.cn>
Author: wanghongliang <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/hwcap.h              |  14 +
 arch/loongarch64/bits/posix.h              |   2 +
 arch/loongarch64/bits/ptrace.h             |   4 +
 arch/loongarch64/bits/reg.h                |  66 +++++
 arch/loongarch64/bits/setjmp.h             |   1 +
 arch/loongarch64/bits/signal.h             |  80 ++++++
 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                |  14 +
 arch/loongarch64/pthread_arch.h            |  13 +
 arch/loongarch64/reloc.h                   |  27 ++
 arch/loongarch64/syscall_arch.h            | 137 ++++++++++
 configure                                  |   1 +
 crt/loongarch64/crti.s                     |  15 +
 crt/loongarch64/crtn.s                     |  12 +
 include/elf.h                              |  66 +++++
 src/fenv/loongarch64/fenv.S                |  72 +++++
 src/ldso/loongarch64/dlsym.s               |   7 +
 src/setjmp/loongarch64/longjmp.S           |  37 +++
 src/setjmp/loongarch64/setjmp.S            |  34 +++
 src/signal/loongarch64/restore.s           |  10 +
 src/signal/loongarch64/sigsetjmp.s         |  29 ++
 src/thread/loongarch64/__set_thread_area.s |   7 +
 src/thread/loongarch64/__unmapself.s       |   7 +
 src/thread/loongarch64/clone.s             |  47 ++++
 src/thread/loongarch64/syscall_cp.s        |  29 ++
 32 files changed, 1184 insertions(+)
 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/hwcap.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 crt/loongarch64/crti.s
 create mode 100644 crt/loongarch64/crtn.s
 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..bf4805c9
--- /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..d1807aca
--- /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..264cafb5
--- /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 __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..719c7908
--- /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/hwcap.h b/arch/loongarch64/bits/hwcap.h
new file mode 100644
index 00000000..c9fa08f6
--- /dev/null
+++ b/arch/loongarch64/bits/hwcap.h
@@ -0,0 +1,14 @@
+/* HWCAP - Hardware Capabilities.
+ * Hardware information is not clear at present, leave it blank.
+ */
+#define HWCAP_LOONGARCH_CPUCFG	(1 << 0)
+#define HWCAP_LOONGARCH_FPU	(1 << 1)
+#define HWCAP_LOONGARCH_LSX	(1 << 2)  /* support 128bit vectors*/
+#define HWCAP_LOONGARCH_LASX	(1 << 3)  /* support 256bit vectors*/
+#define HWCAP_LOONGARCH_LBT	(1 << 4)  /* support LBT*/
+#define HWCAP_LOONGARCH_LVZ	(1 << 5)  /* support virtualization expansion*/
+#define HWCAP_LOONGARCH_CRC32	(1 << 7)  /* support CRC32 check*/
+#define HWCAP_LOONGARCH_AES	(1 << 6)
+#define HWCAP_LOONGARCH_SHA1	(1 << 8)
+#define HWCAP_LOONGARCH_SHA2	(1 << 9)
+#define HWCAP_LOONGARCH_SHA3	(1 << 10)
diff --git a/arch/loongarch64/bits/posix.h b/arch/loongarch64/bits/posix.h
new file mode 100644
index 00000000..8068ce98
--- /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..741fc668
--- /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..5d3f92c5
--- /dev/null
+++ b/arch/loongarch64/bits/reg.h
@@ -0,0 +1,66 @@
+#undef __WORDSIZE
+#define __WORDSIZE 64
+#define LOONGARCH64_EF_R0   0
+#define LOONGARCH64_EF_R1   1
+#define LOONGARCH64_EF_R2   2
+#define LOONGARCH64_EF_R3   3
+#define LOONGARCH64_EF_R4   4
+#define LOONGARCH64_EF_R5   5
+#define LOONGARCH64_EF_R6   6
+#define LOONGARCH64_EF_R7   7
+#define LOONGARCH64_EF_R8   8
+#define LOONGARCH64_EF_R9   9
+#define LOONGARCH64_EF_R10    10
+#define LOONGARCH64_EF_R11    11
+#define LOONGARCH64_EF_R12    12
+#define LOONGARCH64_EF_R13    13
+#define LOONGARCH64_EF_R14    14
+#define LOONGARCH64_EF_R15    15
+#define LOONGARCH64_EF_R16    16
+#define LOONGARCH64_EF_R17    17
+#define LOONGARCH64_EF_R18    18
+#define LOONGARCH64_EF_R19    19
+#define LOONGARCH64_EF_R20    20
+#define LOONGARCH64_EF_R21    21
+#define LOONGARCH64_EF_R22    22
+#define LOONGARCH64_EF_R23    23
+#define LOONGARCH64_EF_R24    24
+#define LOONGARCH64_EF_R25    25
+#define LOONGARCH64_EF_R26    26
+#define LOONGARCH64_EF_R27    27
+#define LOONGARCH64_EF_R28    28
+#define LOONGARCH64_EF_R29    29
+#define LOONGARCH64_EF_R30    30
+#define LOONGARCH64_EF_R31    31
+
+#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
+
+#define EF_R0     LOONGARCH64_EF_R0
+#define EF_R1     LOONGARCH64_EF_R1
+#define EF_R2     LOONGARCH64_EF_R2
+#define EF_R3     LOONGARCH64_EF_R3
+#define EF_R4     LOONGARCH64_EF_R4
+#define EF_R5     LOONGARCH64_EF_R5
+#define EF_R6     LOONGARCH64_EF_R6
+#define EF_R7     LOONGARCH64_EF_R7
+#define EF_R8     LOONGARCH64_EF_R8
+#define EF_R9     LOONGARCH64_EF_R9
+#define EF_R10      LOONGARCH64_EF_R10
+#define EF_R11      LOONGARCH64_EF_R11
+#define EF_R12      LOONGARCH64_EF_R12
+#define EF_R13      LOONGARCH64_EF_R13
+#define EF_R14      LOONGARCH64_EF_R14
+#define EF_R15      LOONGARCH64_EF_R15
+#define EF_R16      LOONGARCH64_EF_R16
+#define EF_R17      LOONGARCH64_EF_R17
+#define EF_R18      LOONGARCH64_EF_R18
+#define EF_R19      LOONGARCH64_EF_R19
+#define EF_R20      LOONGARCH64_EF_R20
+#define EF_R21      LOONGARCH64_EF_R21
+#define EF_R22      LOONGARCH64_EF_R22
+#define EF_R23      LOONGARCH64_EF_R23
+#define EF_R24      LOONGARCH64_EF_R24
+#define EF_R25      LOONGARCH64_EF_R25
+#define EF_R26      LOONGARCH64_EF_R26
+#define EF_R27      LOONGARCH64_EF_R27
+#define EF_R28      LOONGARCH64_EF_R28
diff --git a/arch/loongarch64/bits/setjmp.h b/arch/loongarch64/bits/setjmp.h
new file mode 100644
index 00000000..f4a7f8a3
--- /dev/null
+++ b/arch/loongarch64/bits/setjmp.h
@@ -0,0 +1 @@
+typedef unsigned long long __jmp_buf[22];
diff --git a/arch/loongarch64/bits/signal.h b/arch/loongarch64/bits/signal.h
new file mode 100644
index 00000000..4db790e7
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,80 @@
+#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
+
+typedef unsigned long greg_t, gregset_t[32];
+
+typedef struct sigcontext {
+	unsigned long pc;
+	gregset_t gregs;
+	unsigned int flags;
+	unsigned long extcontext[];
+} mcontext_t;
+
+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   0x04000000
+
+#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..1bb147f2
--- /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..689ff36b
--- /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..4d4cd534
--- /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..c806a0bf
--- /dev/null
+++ b/arch/loongarch64/crt_arch.h
@@ -0,0 +1,14 @@
+__asm__(
+".text \n"
+".global " START "\n"
+".type   " START ", @function\n"
+START ":\n"
+"	add.w $fp, $r0,$r0\n"
+"	or $a0, $sp, $zero\n"
+".weak _DYNAMIC\n"
+".hidden _DYNAMIC\n"
+"	la.local $a1, _DYNAMIC\n"
+"	addi.w $t7, $r0, -16\n"
+"	and $sp, $sp, $t7\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..95ee4c7a
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,13 @@
+static inline uintptr_t __get_tp()
+{
+	register uintptr_t tp __asm__("tp");
+	__asm__ ("" : "=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..2f759a34
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,27 @@
+#ifdef __loongarch64_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "loongarch64"  FP_SUFFIX
+
+#define TPOFF_K (0x0)
+
+#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" \
+	"	or %0, $t1, $zero \n" \
+	: "=r"(*(fp)) : : "memory" )
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..ddd29578
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+	"$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_2.6"
+
+#define IPC_64  0
diff --git a/configure b/configure
index 6f5453f5..aac0c467 100755
--- a/configure
+++ b/configure
@@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
 riscv64*) ARCH=riscv64 ;;
 sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
 s390x*) ARCH=s390x ;;
+loongarch64*) ARCH=loongarch64 ;;
 unknown) fail "$0: unable to detect target arch; try $0 --target=..." ;;
 *) fail "$0: unknown or unsupported target \"$target\"" ;;
 esac
diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
new file mode 100644
index 00000000..96a754d3
--- /dev/null
+++ b/crt/loongarch64/crti.s
@@ -0,0 +1,15 @@
+.section .init
+.global _init
+_init:
+	addi.d	$r3,$r3,-16
+	st.d	$fp,$r3,0
+	st.d	$ra,$r3,8
+	addi.d  $fp,$r3,16
+
+.section .fini
+.global _fini
+_fini:
+	addi.d	$r3,$r3,-16
+	st.d	$fp,$r3,0
+	st.d	$ra,$r3,8
+	addi.d  $fp,$r3,16
diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
new file mode 100644
index 00000000..bffb18f4
--- /dev/null
+++ b/crt/loongarch64/crtn.s
@@ -0,0 +1,12 @@
+.section .init
+	ld.d	$fp,$r3,0
+	ld.d	$ra,$r3,8
+	addi.d	$r3,$r3,16
+	jirl	$r0,$ra,0
+
+
+.section .fini
+	ld.d	$fp,$r3,0
+	ld.d	$ra,$r3,8
+	addi.d	$r3,$r3,16
+	jirl	$r0,$ra,0
diff --git a/include/elf.h b/include/elf.h
index 86e2f0bb..69b01ff4 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -697,6 +697,11 @@ 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
 
 
 
@@ -3288,6 +3293,67 @@ enum
 #define R_RISCV_SET32           56
 #define R_RISCV_32_PCREL        57
 
+/* LoongISA ELF Flags */
+#define EM_LOONGARCH  258
+
+#define EF_LARCH_ABI             0x0003
+#define EF_LARCH_ABI_LP64        0x0003
+#define EF_LARCH_ABI_LP32        0x0001
+
+/* Loongarch specific dynamic relocations. */
+#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
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
new file mode 100644
index 00000000..049234be
--- /dev/null
+++ b/src/fenv/loongarch64/fenv.S
@@ -0,0 +1,72 @@
+#ifndef __loongarch_soft_float
+
+.global	feclearexcept
+.type	feclearexcept,@function
+feclearexcept:
+	li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
+	and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+	or	$a1, $a1, $a0
+	xor	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+	li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	feraiseexcept
+.type	feraiseexcept,@function
+feraiseexcept:
+	li.w    $a1, 0x1f0000
+	and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+	or	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fetestexcept
+.type	fetestexcept,@function
+fetestexcept:
+        li.w    $a1, 0x1f0000
+        and     $a0, $a0, $a1
+	movfcsr2gr $a1, $r0
+        and     $v0, $a1, $a0
+	jirl    $zero, $ra, 0
+
+.global	fegetround
+.type	fegetround,@function
+fegetround:
+	movfcsr2gr $v0, $r0
+        andi    $v0, $v0, 0x300  //fcsr0.RM
+	jirl    $zero, $ra, 0
+
+.global	__fesetround
+.hidden __fesetround
+.type	__fesetround,@function
+__fesetround:
+	movfcsr2gr $a1, $r0
+	li.w	$a2, -769  //0xfffffcff
+	and	$a1, $a1, $a2
+	or	$a1, $a1, $a0
+	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fegetenv
+.type	fegetenv,@function
+fegetenv:
+	movfcsr2gr $a1, $r0
+	st.w	$a1, $a0, 0
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+.global	fesetenv
+.type	fesetenv,@function
+fesetenv:
+	addi.d	$a1, $a0, 1
+	beq	$a1, $r0, 1f
+	ld.w	$a1, $a0, 0
+1:	movgr2fcsr $r0, $a1
+        li.w    $v0, 0
+	jirl    $zero, $ra, 0
+
+#endif
diff --git a/src/ldso/loongarch64/dlsym.s b/src/ldso/loongarch64/dlsym.s
new file mode 100644
index 00000000..5f51ed85
--- /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	$r16, __dlsym
+	jirl	$r0, $r16, 0
diff --git a/src/setjmp/loongarch64/longjmp.S b/src/setjmp/loongarch64/longjmp.S
new file mode 100644
index 00000000..41d897ed
--- /dev/null
+++ b/src/setjmp/loongarch64/longjmp.S
@@ -0,0 +1,37 @@
+.global    _longjmp
+.global    longjmp
+.type    _longjmp,@function
+.type    longjmp,@function
+_longjmp:
+longjmp:
+	add.d   $t5, $a0, $zero
+	add.d   $v0, $a1, $zero
+
+	bne     $v0, $zero, 1f
+	addi.d  $v0, $v0, 1
+
+1:
+	ld.d    $ra, $t5, 0
+	ld.d    $sp, $t5, 8
+	ld.d    $r21,$t5, 16
+	ld.d    $fp, $t5, 24
+	ld.d    $s0, $t5, 32
+	ld.d    $s1, $t5, 40
+	ld.d    $s2, $t5, 48
+	ld.d    $s3, $t5, 56
+	ld.d    $s4, $t5, 64
+	ld.d    $s5, $t5, 72
+	ld.d    $s6, $t5, 80
+	ld.d    $s7, $t5, 88
+	ld.d    $s8, $t5, 96
+#ifndef __loongarch64_soft_float
+	fld.d   $fs0, $t5, 104
+	fld.d   $fs1, $t5, 112
+	fld.d   $fs2, $t5, 120
+	fld.d   $fs3, $t5, 128
+	fld.d   $fs4, $t5, 136
+	fld.d   $fs5, $t5, 144
+	fld.d   $fs6, $t5, 152
+	fld.d   $fs7, $t5, 160
+#endif
+	jirl    $zero, $ra, 0
diff --git a/src/setjmp/loongarch64/setjmp.S b/src/setjmp/loongarch64/setjmp.S
new file mode 100644
index 00000000..8dca3cb8
--- /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 __loongarch64_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
+	xor     $v0, $v0, $v0
+	jirl    $zero, $ra, 0
diff --git a/src/signal/loongarch64/restore.s b/src/signal/loongarch64/restore.s
new file mode 100644
index 00000000..9bf015a0
--- /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:
+	ori	$a7, $zero, 139
+	syscall	0
diff --git a/src/signal/loongarch64/sigsetjmp.s b/src/signal/loongarch64/sigsetjmp.s
new file mode 100644
index 00000000..d53f334a
--- /dev/null
+++ b/src/signal/loongarch64/sigsetjmp.s
@@ -0,0 +1,29 @@
+.global sigsetjmp
+.global __sigsetjmp
+.type   sigsetjmp,@function
+.type   __sigsetjmp,@function
+sigsetjmp:
+__sigsetjmp:
+        or $t5, $a0, $zero
+        or $t6, $a1, $zero
+
+        # comparing save mask with 0, if equals to 0 then
+        # sigsetjmp is equal to setjmp.
+        beq     $t6, $zero, 1f
+        st.d    $ra, $t5, 168
+
+        # save base of got so that we can use it later
+        # once we return from 'longjmp'
+        la.global  $t8, setjmp
+        jirl    $ra, $t8, 0
+
+        or      $v1, $v0, $zero # Return from 'setjmp' or 'longjmp'
+        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
+        or      $a0, $t5, $zero
+
+.hidden __sigsetjmp_tail
+        la.global  $t8, __sigsetjmp_tail
+        jirl       $zero, $t8, 0
+1:
+        la.global  $t8, setjmp
+        jirl       $zero, $t8, 0
diff --git a/src/thread/loongarch64/__set_thread_area.s b/src/thread/loongarch64/__set_thread_area.s
new file mode 100644
index 00000000..421cd381
--- /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:
+	or	$tp, $a0, $zero
+	ori	$a0, $zero, 0
+	jirl	$zero, $ra, 0
diff --git a/src/thread/loongarch64/__unmapself.s b/src/thread/loongarch64/__unmapself.s
new file mode 100644
index 00000000..b77e6d1d
--- /dev/null
+++ b/src/thread/loongarch64/__unmapself.s
@@ -0,0 +1,7 @@
+.global	__unmapself
+.type	__unmapself, @function
+__unmapself:
+	li.d	$a7, 215
+	syscall	0				# call munmap
+	li.d	$a7, 93
+	syscall	0				# call exit
diff --git a/src/thread/loongarch64/clone.s b/src/thread/loongarch64/clone.s
new file mode 100644
index 00000000..ec920c7b
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,47 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+#         a0,    a1,   a2,    a3,  a4,  a5,   a6
+# sys_clone3(struct clone_args *cl_args, size_t size)
+#                                 a0             a1
+
+.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
+
+	li.d	$t0, ~0x004000ff  # mask CSIGNAL and CLONE_DETACHED
+	and	$t1, $a2, $t0     # cl_args.flags
+	li.d	$t0, 0x000000ff   # CSIGNAL
+	and	$t2, $a2, $t0     # cl_args.exit_signal
+
+	bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
+	addi.d	$sp, $sp, -88   # struct clone_args
+	st.d	$t1, $sp, 0     # flags
+	st.d	$a4, $sp, 8     # pidfd
+	st.d	$a6, $sp, 16    # child_tid
+	st.d	$a4, $sp, 24    # parent_tid
+	st.d	$t2, $sp, 32    # exit_signal
+	st.d	$a1, $sp, 40    # stack
+	st.d	$zero, $sp, 48  # stack_size
+	st.d	$a5, $sp, 56    # tls
+	st.d	$zero, $sp, 64  # set_tid
+	st.d	$zero, $sp, 72  # set_tid_size
+	st.d	$zero, $sp, 80  # cgroup
+
+	move	$a0, $sp
+	li.d	$a1, 88
+	li.d	$a7, 435	# __NR_clone3
+	syscall 0		# call clone3
+
+	beqz	$a0, 1f		# whether child process
+	addi.d	$sp, $sp, 88
+	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
+	li.d	$a7, 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..3903ed2c
--- /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
+	or	$t8, $a1, $zero     # reserve system call number
+	or	$a0, $a2, $zero
+	or	$a1, $a3, $zero
+	or	$a2, $a4, $zero
+	or	$a3, $a5, $zero
+	or	$a4, $a6, $zero
+	or	$a5, $a7, $zero
+	or	$a7, $t8, $zero
+	syscall	0
+__cp_end:
+	jirl	$zero, $ra, 0
+__cp_cancel:
+	la.local $t8, __cancel
+	jirl	$zero, $t8, 0
-- 
2.34.1


^ permalink raw reply	[flat|nested] 7+ messages in thread

* Re: [musl] Re: add loongarch64 port v4
  2022-07-05 12:56         ` 王洪亮
@ 2022-07-16  8:13           ` 王洪亮
  0 siblings, 0 replies; 7+ messages in thread
From: 王洪亮 @ 2022-07-16  8:13 UTC (permalink / raw)
  To: musl

[-- Attachment #1: Type: text/plain, Size: 65950 bytes --]

Hi, Rich

I'm Looking forward to your reply,thank you.

在 2022/7/5 下午8:56, 王洪亮 写道:
> Hi, Rich
>
> Have you reviewed it?
> This patch has some new problems?
>
> 在 2022/6/23 上午9:59, Rich Felker 写道:
>> Hi. I just haven't gotten to reviewing it again. I'll try to take a
>> good look in the next day or two.
>>
>> On Thu, Jun 23, 2022 at 09:30:55AM +0800, 王洪亮 wrote:
>>> Hi,  Rich
>>>
>>>   this patch has any other problems need to be modified?
>>>
>>> Looking forward to your reply. thanks.
>>>
>>>
>>> Hongliang Wang
>>>
>>> 在 2022/6/20 下午5:49, 王洪亮 写道:
>>>> Hi, Rich
>>>>
>>>> 1. this patch has any other problems need to be modified?
>>>>
>>>> 2.what are the suggestions for support LA32 later?
>>>>
>>>>
>>>> 在 2022/6/14 下午3:23, 王洪亮 写道:
>>>>> Hi,
>>>>>
>>>>> 1. this patch has any other problems need to be modified?
>>>>>
>>>>> 2.what are the suggestions for support LA32?
>>>>>
>>>>>
>>>>> 在 2022/6/8 上午11:56, 王洪亮 写道:
>>>>>> Hi,
>>>>>>
>>>>>> I published loongarch64 port v4 in
>>>>>> https://github.com/loongson/musl/tree/loongarch-v2.0.
>>>>>>
>>>>>> fixed the following problems:
>>>>>>
>>>>>> 1.fixed  the extension field of struct mcontext
>>>>>>
>>>>>> 2.removed arch/loongarch64/kstat.h
>>>>>>
>>>>>> 3.deleted the incorrect definition in arch/loongarch64/reloc.h
>>>>>>
>>>>>> 4.optimize  dlsym
>>>>>>
>>>>>> please code review if there are any other problems ? thanks.
>>>>>>
>>>>>> I have one questions:
>>>>>>
>>>>>> Through  add "long__uc_pad" in struct ucontext_t  to meet the
>>>>>> extcontext[] 16 bytes alignment,
>>>>>>
>>>>>> if run in loongarch32, this method not meet the  16 bytes
>>>>>> alignment requirement. how to do it ?
>>>>>>
>>>>>>
>>>>>> Hongliang Wang.
>>>>>>
>>> >From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17 00:00:00 2001
>>> From: wanghongliang <wanghongliang@loongson.cn>
>>> Date: Wed, 8 Jun 2022 01:42:12 +0800
>>> Subject: [PATCH] add loongarch64 port v4.
>>>
>>> Author: xiaojuanZhai <zhaixiaojuan@loongson.cn>
>>> Author: meidanLi <limeidan@loongson.cn>
>>> Author: guoqiChen <chenguoqi@loongson.cn>
>>> Author: xiaolinZhao <zhaoxiaolin@loongson.cn>
>>> Author: Fanpeng <fanpeng@loongson.cn>
>>> Author: jiantaoShan <shanjiantao@loongson.cn>
>>> Author: xuhuiQiang <qiangxuhui@loongson.cn>
>>> Author: jingyunHua <huajingyun@loongson.cn>
>>> Author: liuxue <liuxue@loongson.cn>
>>> Author: wanghongliang <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/hwcap.h              |  14 +
>>>   arch/loongarch64/bits/posix.h              |   2 +
>>>   arch/loongarch64/bits/ptrace.h             |   4 +
>>>   arch/loongarch64/bits/reg.h                |  66 +++++
>>>   arch/loongarch64/bits/setjmp.h             |   1 +
>>>   arch/loongarch64/bits/signal.h             |  80 ++++++
>>>   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                |  14 +
>>>   arch/loongarch64/pthread_arch.h            |  13 +
>>>   arch/loongarch64/reloc.h                   |  27 ++
>>>   arch/loongarch64/syscall_arch.h            | 137 ++++++++++
>>>   configure                                  |   1 +
>>>   crt/loongarch64/crti.s                     |  15 +
>>>   crt/loongarch64/crtn.s                     |  12 +
>>>   include/elf.h                              |  66 +++++
>>>   src/fenv/loongarch64/fenv.S                |  72 +++++
>>>   src/ldso/loongarch64/dlsym.s               |   7 +
>>>   src/setjmp/loongarch64/longjmp.S           |  37 +++
>>>   src/setjmp/loongarch64/setjmp.S            |  34 +++
>>>   src/signal/loongarch64/restore.s           |  10 +
>>>   src/signal/loongarch64/sigsetjmp.s         |  29 ++
>>>   src/thread/loongarch64/__set_thread_area.s |   7 +
>>>   src/thread/loongarch64/__unmapself.s       |   7 +
>>>   src/thread/loongarch64/clone.s             |  47 ++++
>>>   src/thread/loongarch64/syscall_cp.s        |  29 ++
>>>   32 files changed, 1184 insertions(+)
>>>   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/hwcap.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 crt/loongarch64/crti.s
>>>   create mode 100644 crt/loongarch64/crtn.s
>>>   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..bf4805c9
>>> --- /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..d1807aca
>>> --- /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..264cafb5
>>> --- /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 __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..719c7908
>>> --- /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/hwcap.h 
>>> b/arch/loongarch64/bits/hwcap.h
>>> new file mode 100644
>>> index 00000000..c9fa08f6
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/hwcap.h
>>> @@ -0,0 +1,14 @@
>>> +/* HWCAP - Hardware Capabilities.
>>> + * Hardware information is not clear at present, leave it blank.
>>> + */
>>> +#define HWCAP_LOONGARCH_CPUCFG    (1 << 0)
>>> +#define HWCAP_LOONGARCH_FPU    (1 << 1)
>>> +#define HWCAP_LOONGARCH_LSX    (1 << 2)  /* support 128bit vectors*/
>>> +#define HWCAP_LOONGARCH_LASX    (1 << 3)  /* support 256bit vectors*/
>>> +#define HWCAP_LOONGARCH_LBT    (1 << 4)  /* support LBT*/
>>> +#define HWCAP_LOONGARCH_LVZ    (1 << 5)  /* support virtualization 
>>> expansion*/
>>> +#define HWCAP_LOONGARCH_CRC32    (1 << 7)  /* support CRC32 check*/
>>> +#define HWCAP_LOONGARCH_AES    (1 << 6)
>>> +#define HWCAP_LOONGARCH_SHA1    (1 << 8)
>>> +#define HWCAP_LOONGARCH_SHA2    (1 << 9)
>>> +#define HWCAP_LOONGARCH_SHA3    (1 << 10)
>>> diff --git a/arch/loongarch64/bits/posix.h 
>>> b/arch/loongarch64/bits/posix.h
>>> new file mode 100644
>>> index 00000000..8068ce98
>>> --- /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..741fc668
>>> --- /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..5d3f92c5
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/reg.h
>>> @@ -0,0 +1,66 @@
>>> +#undef __WORDSIZE
>>> +#define __WORDSIZE 64
>>> +#define LOONGARCH64_EF_R0   0
>>> +#define LOONGARCH64_EF_R1   1
>>> +#define LOONGARCH64_EF_R2   2
>>> +#define LOONGARCH64_EF_R3   3
>>> +#define LOONGARCH64_EF_R4   4
>>> +#define LOONGARCH64_EF_R5   5
>>> +#define LOONGARCH64_EF_R6   6
>>> +#define LOONGARCH64_EF_R7   7
>>> +#define LOONGARCH64_EF_R8   8
>>> +#define LOONGARCH64_EF_R9   9
>>> +#define LOONGARCH64_EF_R10    10
>>> +#define LOONGARCH64_EF_R11    11
>>> +#define LOONGARCH64_EF_R12    12
>>> +#define LOONGARCH64_EF_R13    13
>>> +#define LOONGARCH64_EF_R14    14
>>> +#define LOONGARCH64_EF_R15    15
>>> +#define LOONGARCH64_EF_R16    16
>>> +#define LOONGARCH64_EF_R17    17
>>> +#define LOONGARCH64_EF_R18    18
>>> +#define LOONGARCH64_EF_R19    19
>>> +#define LOONGARCH64_EF_R20    20
>>> +#define LOONGARCH64_EF_R21    21
>>> +#define LOONGARCH64_EF_R22    22
>>> +#define LOONGARCH64_EF_R23    23
>>> +#define LOONGARCH64_EF_R24    24
>>> +#define LOONGARCH64_EF_R25    25
>>> +#define LOONGARCH64_EF_R26    26
>>> +#define LOONGARCH64_EF_R27    27
>>> +#define LOONGARCH64_EF_R28    28
>>> +#define LOONGARCH64_EF_R29    29
>>> +#define LOONGARCH64_EF_R30    30
>>> +#define LOONGARCH64_EF_R31    31
>>> +
>>> +#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
>>> +
>>> +#define EF_R0     LOONGARCH64_EF_R0
>>> +#define EF_R1     LOONGARCH64_EF_R1
>>> +#define EF_R2     LOONGARCH64_EF_R2
>>> +#define EF_R3     LOONGARCH64_EF_R3
>>> +#define EF_R4     LOONGARCH64_EF_R4
>>> +#define EF_R5     LOONGARCH64_EF_R5
>>> +#define EF_R6     LOONGARCH64_EF_R6
>>> +#define EF_R7     LOONGARCH64_EF_R7
>>> +#define EF_R8     LOONGARCH64_EF_R8
>>> +#define EF_R9     LOONGARCH64_EF_R9
>>> +#define EF_R10      LOONGARCH64_EF_R10
>>> +#define EF_R11      LOONGARCH64_EF_R11
>>> +#define EF_R12      LOONGARCH64_EF_R12
>>> +#define EF_R13      LOONGARCH64_EF_R13
>>> +#define EF_R14      LOONGARCH64_EF_R14
>>> +#define EF_R15      LOONGARCH64_EF_R15
>>> +#define EF_R16      LOONGARCH64_EF_R16
>>> +#define EF_R17      LOONGARCH64_EF_R17
>>> +#define EF_R18      LOONGARCH64_EF_R18
>>> +#define EF_R19      LOONGARCH64_EF_R19
>>> +#define EF_R20      LOONGARCH64_EF_R20
>>> +#define EF_R21      LOONGARCH64_EF_R21
>>> +#define EF_R22      LOONGARCH64_EF_R22
>>> +#define EF_R23      LOONGARCH64_EF_R23
>>> +#define EF_R24      LOONGARCH64_EF_R24
>>> +#define EF_R25      LOONGARCH64_EF_R25
>>> +#define EF_R26      LOONGARCH64_EF_R26
>>> +#define EF_R27      LOONGARCH64_EF_R27
>>> +#define EF_R28      LOONGARCH64_EF_R28
>>> diff --git a/arch/loongarch64/bits/setjmp.h 
>>> b/arch/loongarch64/bits/setjmp.h
>>> new file mode 100644
>>> index 00000000..f4a7f8a3
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/setjmp.h
>>> @@ -0,0 +1 @@
>>> +typedef unsigned long long __jmp_buf[22];
>>> diff --git a/arch/loongarch64/bits/signal.h 
>>> b/arch/loongarch64/bits/signal.h
>>> new file mode 100644
>>> index 00000000..4db790e7
>>> --- /dev/null
>>> +++ b/arch/loongarch64/bits/signal.h
>>> @@ -0,0 +1,80 @@
>>> +#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
>>> +
>>> +typedef unsigned long greg_t, gregset_t[32];
>>> +
>>> +typedef struct sigcontext {
>>> +    unsigned long pc;
>>> +    gregset_t gregs;
>>> +    unsigned int flags;
>>> +    unsigned long extcontext[];
>>> +} mcontext_t;
>>> +
>>> +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   0x04000000
>>> +
>>> +#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..1bb147f2
>>> --- /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..689ff36b
>>> --- /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..4d4cd534
>>> --- /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..c806a0bf
>>> --- /dev/null
>>> +++ b/arch/loongarch64/crt_arch.h
>>> @@ -0,0 +1,14 @@
>>> +__asm__(
>>> +".text \n"
>>> +".global " START "\n"
>>> +".type   " START ", @function\n"
>>> +START ":\n"
>>> +"    add.w $fp, $r0,$r0\n"
>>> +"    or $a0, $sp, $zero\n"
>>> +".weak _DYNAMIC\n"
>>> +".hidden _DYNAMIC\n"
>>> +"    la.local $a1, _DYNAMIC\n"
>>> +"    addi.w $t7, $r0, -16\n"
>>> +"    and $sp, $sp, $t7\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..95ee4c7a
>>> --- /dev/null
>>> +++ b/arch/loongarch64/pthread_arch.h
>>> @@ -0,0 +1,13 @@
>>> +static inline uintptr_t __get_tp()
>>> +{
>>> +    register uintptr_t tp __asm__("tp");
>>> +    __asm__ ("" : "=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..2f759a34
>>> --- /dev/null
>>> +++ b/arch/loongarch64/reloc.h
>>> @@ -0,0 +1,27 @@
>>> +#ifdef __loongarch64_soft_float
>>> +#define FP_SUFFIX "-sf"
>>> +#else
>>> +#define FP_SUFFIX ""
>>> +#endif
>>> +
>>> +#define LDSO_ARCH "loongarch64"  FP_SUFFIX
>>> +
>>> +#define TPOFF_K (0x0)
>>> +
>>> +#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" \
>>> +    "    or %0, $t1, $zero \n" \
>>> +    : "=r"(*(fp)) : : "memory" )
>>> diff --git a/arch/loongarch64/syscall_arch.h 
>>> b/arch/loongarch64/syscall_arch.h
>>> new file mode 100644
>>> index 00000000..ddd29578
>>> --- /dev/null
>>> +++ b/arch/loongarch64/syscall_arch.h
>>> @@ -0,0 +1,137 @@
>>> +#define __SYSCALL_LL_E(x) (x)
>>> +#define __SYSCALL_LL_O(x) (x)
>>> +
>>> +#define SYSCALL_CLOBBERLIST \
>>> +    "$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_2.6"
>>> +
>>> +#define IPC_64  0
>>> diff --git a/configure b/configure
>>> index 6f5453f5..aac0c467 100755
>>> --- a/configure
>>> +++ b/configure
>>> @@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
>>>   riscv64*) ARCH=riscv64 ;;
>>>   sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
>>>   s390x*) ARCH=s390x ;;
>>> +loongarch64*) ARCH=loongarch64 ;;
>>>   unknown) fail "$0: unable to detect target arch; try $0 
>>> --target=..." ;;
>>>   *) fail "$0: unknown or unsupported target \"$target\"" ;;
>>>   esac
>>> diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
>>> new file mode 100644
>>> index 00000000..96a754d3
>>> --- /dev/null
>>> +++ b/crt/loongarch64/crti.s
>>> @@ -0,0 +1,15 @@
>>> +.section .init
>>> +.global _init
>>> +_init:
>>> +    addi.d    $r3,$r3,-16
>>> +    st.d    $fp,$r3,0
>>> +    st.d    $ra,$r3,8
>>> +    addi.d  $fp,$r3,16
>>> +
>>> +.section .fini
>>> +.global _fini
>>> +_fini:
>>> +    addi.d    $r3,$r3,-16
>>> +    st.d    $fp,$r3,0
>>> +    st.d    $ra,$r3,8
>>> +    addi.d  $fp,$r3,16
>>> diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
>>> new file mode 100644
>>> index 00000000..bffb18f4
>>> --- /dev/null
>>> +++ b/crt/loongarch64/crtn.s
>>> @@ -0,0 +1,12 @@
>>> +.section .init
>>> +    ld.d    $fp,$r3,0
>>> +    ld.d    $ra,$r3,8
>>> +    addi.d    $r3,$r3,16
>>> +    jirl    $r0,$ra,0
>>> +
>>> +
>>> +.section .fini
>>> +    ld.d    $fp,$r3,0
>>> +    ld.d    $ra,$r3,8
>>> +    addi.d    $r3,$r3,16
>>> +    jirl    $r0,$ra,0
>>> diff --git a/include/elf.h b/include/elf.h
>>> index 86e2f0bb..69b01ff4 100644
>>> --- a/include/elf.h
>>> +++ b/include/elf.h
>>> @@ -697,6 +697,11 @@ 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
>>>       @@ -3288,6 +3293,67 @@ enum
>>>   #define R_RISCV_SET32           56
>>>   #define R_RISCV_32_PCREL        57
>>>   +/* LoongISA ELF Flags */
>>> +#define EM_LOONGARCH  258
>>> +
>>> +#define EF_LARCH_ABI             0x0003
>>> +#define EF_LARCH_ABI_LP64        0x0003
>>> +#define EF_LARCH_ABI_LP32        0x0001
>>> +
>>> +/* Loongarch specific dynamic relocations. */
>>> +#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
>>> +
>>>   #ifdef __cplusplus
>>>   }
>>>   #endif
>>> diff --git a/src/fenv/loongarch64/fenv.S b/src/fenv/loongarch64/fenv.S
>>> new file mode 100644
>>> index 00000000..049234be
>>> --- /dev/null
>>> +++ b/src/fenv/loongarch64/fenv.S
>>> @@ -0,0 +1,72 @@
>>> +#ifndef __loongarch_soft_float
>>> +
>>> +.global    feclearexcept
>>> +.type    feclearexcept,@function
>>> +feclearexcept:
>>> +    li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
>>> +    and     $a0, $a0, $a1
>>> +    movfcsr2gr $a1, $r0
>>> +    or    $a1, $a1, $a0
>>> +    xor    $a1, $a1, $a0
>>> +    movgr2fcsr $r0, $a1
>>> +    li.w    $v0, 0
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +.global    feraiseexcept
>>> +.type    feraiseexcept,@function
>>> +feraiseexcept:
>>> +    li.w    $a1, 0x1f0000
>>> +    and     $a0, $a0, $a1
>>> +    movfcsr2gr $a1, $r0
>>> +    or    $a1, $a1, $a0
>>> +    movgr2fcsr $r0, $a1
>>> +        li.w    $v0, 0
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +.global    fetestexcept
>>> +.type    fetestexcept,@function
>>> +fetestexcept:
>>> +        li.w    $a1, 0x1f0000
>>> +        and     $a0, $a0, $a1
>>> +    movfcsr2gr $a1, $r0
>>> +        and     $v0, $a1, $a0
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +.global    fegetround
>>> +.type    fegetround,@function
>>> +fegetround:
>>> +    movfcsr2gr $v0, $r0
>>> +        andi    $v0, $v0, 0x300  //fcsr0.RM
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +.global    __fesetround
>>> +.hidden __fesetround
>>> +.type    __fesetround,@function
>>> +__fesetround:
>>> +    movfcsr2gr $a1, $r0
>>> +    li.w    $a2, -769  //0xfffffcff
>>> +    and    $a1, $a1, $a2
>>> +    or    $a1, $a1, $a0
>>> +    movgr2fcsr $r0, $a1
>>> +        li.w    $v0, 0
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +.global    fegetenv
>>> +.type    fegetenv,@function
>>> +fegetenv:
>>> +    movfcsr2gr $a1, $r0
>>> +    st.w    $a1, $a0, 0
>>> +        li.w    $v0, 0
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +.global    fesetenv
>>> +.type    fesetenv,@function
>>> +fesetenv:
>>> +    addi.d    $a1, $a0, 1
>>> +    beq    $a1, $r0, 1f
>>> +    ld.w    $a1, $a0, 0
>>> +1:    movgr2fcsr $r0, $a1
>>> +        li.w    $v0, 0
>>> +    jirl    $zero, $ra, 0
>>> +
>>> +#endif
>>> diff --git a/src/ldso/loongarch64/dlsym.s 
>>> b/src/ldso/loongarch64/dlsym.s
>>> new file mode 100644
>>> index 00000000..5f51ed85
>>> --- /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    $r16, __dlsym
>>> +    jirl    $r0, $r16, 0
>>> diff --git a/src/setjmp/loongarch64/longjmp.S 
>>> b/src/setjmp/loongarch64/longjmp.S
>>> new file mode 100644
>>> index 00000000..41d897ed
>>> --- /dev/null
>>> +++ b/src/setjmp/loongarch64/longjmp.S
>>> @@ -0,0 +1,37 @@
>>> +.global    _longjmp
>>> +.global    longjmp
>>> +.type    _longjmp,@function
>>> +.type    longjmp,@function
>>> +_longjmp:
>>> +longjmp:
>>> +    add.d   $t5, $a0, $zero
>>> +    add.d   $v0, $a1, $zero
>>> +
>>> +    bne     $v0, $zero, 1f
>>> +    addi.d  $v0, $v0, 1
>>> +
>>> +1:
>>> +    ld.d    $ra, $t5, 0
>>> +    ld.d    $sp, $t5, 8
>>> +    ld.d    $r21,$t5, 16
>>> +    ld.d    $fp, $t5, 24
>>> +    ld.d    $s0, $t5, 32
>>> +    ld.d    $s1, $t5, 40
>>> +    ld.d    $s2, $t5, 48
>>> +    ld.d    $s3, $t5, 56
>>> +    ld.d    $s4, $t5, 64
>>> +    ld.d    $s5, $t5, 72
>>> +    ld.d    $s6, $t5, 80
>>> +    ld.d    $s7, $t5, 88
>>> +    ld.d    $s8, $t5, 96
>>> +#ifndef __loongarch64_soft_float
>>> +    fld.d   $fs0, $t5, 104
>>> +    fld.d   $fs1, $t5, 112
>>> +    fld.d   $fs2, $t5, 120
>>> +    fld.d   $fs3, $t5, 128
>>> +    fld.d   $fs4, $t5, 136
>>> +    fld.d   $fs5, $t5, 144
>>> +    fld.d   $fs6, $t5, 152
>>> +    fld.d   $fs7, $t5, 160
>>> +#endif
>>> +    jirl    $zero, $ra, 0
>>> diff --git a/src/setjmp/loongarch64/setjmp.S 
>>> b/src/setjmp/loongarch64/setjmp.S
>>> new file mode 100644
>>> index 00000000..8dca3cb8
>>> --- /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 __loongarch64_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
>>> +    xor     $v0, $v0, $v0
>>> +    jirl    $zero, $ra, 0
>>> diff --git a/src/signal/loongarch64/restore.s 
>>> b/src/signal/loongarch64/restore.s
>>> new file mode 100644
>>> index 00000000..9bf015a0
>>> --- /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:
>>> +    ori    $a7, $zero, 139
>>> +    syscall    0
>>> diff --git a/src/signal/loongarch64/sigsetjmp.s 
>>> b/src/signal/loongarch64/sigsetjmp.s
>>> new file mode 100644
>>> index 00000000..d53f334a
>>> --- /dev/null
>>> +++ b/src/signal/loongarch64/sigsetjmp.s
>>> @@ -0,0 +1,29 @@
>>> +.global sigsetjmp
>>> +.global __sigsetjmp
>>> +.type   sigsetjmp,@function
>>> +.type   __sigsetjmp,@function
>>> +sigsetjmp:
>>> +__sigsetjmp:
>>> +        or $t5, $a0, $zero
>>> +        or $t6, $a1, $zero
>>> +
>>> +        # comparing save mask with 0, if equals to 0 then
>>> +        # sigsetjmp is equal to setjmp.
>>> +        beq     $t6, $zero, 1f
>>> +        st.d    $ra, $t5, 168
>>> +
>>> +        # save base of got so that we can use it later
>>> +        # once we return from 'longjmp'
>>> +        la.global  $t8, setjmp
>>> +        jirl    $ra, $t8, 0
>>> +
>>> +        or      $v1, $v0, $zero # Return from 'setjmp' or 'longjmp'
>>> +        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
>>> +        or      $a0, $t5, $zero
>>> +
>>> +.hidden __sigsetjmp_tail
>>> +        la.global  $t8, __sigsetjmp_tail
>>> +        jirl       $zero, $t8, 0
>>> +1:
>>> +        la.global  $t8, setjmp
>>> +        jirl       $zero, $t8, 0
>>> diff --git a/src/thread/loongarch64/__set_thread_area.s 
>>> b/src/thread/loongarch64/__set_thread_area.s
>>> new file mode 100644
>>> index 00000000..421cd381
>>> --- /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:
>>> +    or    $tp, $a0, $zero
>>> +    ori    $a0, $zero, 0
>>> +    jirl    $zero, $ra, 0
>>> diff --git a/src/thread/loongarch64/__unmapself.s 
>>> b/src/thread/loongarch64/__unmapself.s
>>> new file mode 100644
>>> index 00000000..b77e6d1d
>>> --- /dev/null
>>> +++ b/src/thread/loongarch64/__unmapself.s
>>> @@ -0,0 +1,7 @@
>>> +.global    __unmapself
>>> +.type    __unmapself, @function
>>> +__unmapself:
>>> +    li.d    $a7, 215
>>> +    syscall    0                # call munmap
>>> +    li.d    $a7, 93
>>> +    syscall    0                # call exit
>>> diff --git a/src/thread/loongarch64/clone.s 
>>> b/src/thread/loongarch64/clone.s
>>> new file mode 100644
>>> index 00000000..ec920c7b
>>> --- /dev/null
>>> +++ b/src/thread/loongarch64/clone.s
>>> @@ -0,0 +1,47 @@
>>> +#__clone(func, stack, flags, arg, ptid, tls, ctid)
>>> +#         a0,    a1,   a2,    a3,  a4,  a5,   a6
>>> +# sys_clone3(struct clone_args *cl_args, size_t size)
>>> +#                                 a0             a1
>>> +
>>> +.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
>>> +
>>> +    li.d    $t0, ~0x004000ff  # mask CSIGNAL and CLONE_DETACHED
>>> +    and    $t1, $a2, $t0     # cl_args.flags
>>> +    li.d    $t0, 0x000000ff   # CSIGNAL
>>> +    and    $t2, $a2, $t0     # cl_args.exit_signal
>>> +
>>> +    bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
>>> +    addi.d    $sp, $sp, -88   # struct clone_args
>>> +    st.d    $t1, $sp, 0     # flags
>>> +    st.d    $a4, $sp, 8     # pidfd
>>> +    st.d    $a6, $sp, 16    # child_tid
>>> +    st.d    $a4, $sp, 24    # parent_tid
>>> +    st.d    $t2, $sp, 32    # exit_signal
>>> +    st.d    $a1, $sp, 40    # stack
>>> +    st.d    $zero, $sp, 48  # stack_size
>>> +    st.d    $a5, $sp, 56    # tls
>>> +    st.d    $zero, $sp, 64  # set_tid
>>> +    st.d    $zero, $sp, 72  # set_tid_size
>>> +    st.d    $zero, $sp, 80  # cgroup
>>> +
>>> +    move    $a0, $sp
>>> +    li.d    $a1, 88
>>> +    li.d    $a7, 435    # __NR_clone3
>>> +    syscall 0        # call clone3
>>> +
>>> +    beqz    $a0, 1f        # whether child process
>>> +    addi.d    $sp, $sp, 88
>>> +    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
>>> +    li.d    $a7, 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..3903ed2c
>>> --- /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
>>> +    or    $t8, $a1, $zero     # reserve system call number
>>> +    or    $a0, $a2, $zero
>>> +    or    $a1, $a3, $zero
>>> +    or    $a2, $a4, $zero
>>> +    or    $a3, $a5, $zero
>>> +    or    $a4, $a6, $zero
>>> +    or    $a5, $a7, $zero
>>> +    or    $a7, $t8, $zero
>>> +    syscall    0
>>> +__cp_end:
>>> +    jirl    $zero, $ra, 0
>>> +__cp_cancel:
>>> +    la.local $t8, __cancel
>>> +    jirl    $zero, $t8, 0
>>> -- 
>>> 2.34.1
>>>

[-- Attachment #2: Type: text/html, Size: 101682 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2022-07-16  8:13 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-08  3:56 [musl] add loongarch64 port v4 王洪亮
2022-06-14  7:23 ` [musl] " 王洪亮
2022-06-20  9:49   ` 王洪亮
2022-06-23  1:30     ` 王洪亮
2022-06-23  1:59       ` Rich Felker
2022-07-05 12:56         ` 王洪亮
2022-07-16  8:13           ` 王洪亮

Code repositories for project(s) associated with this 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).