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From: 王洪亮 <wanghongliang@loongson.cn>
To: musl@lists.openwall.com
Cc: liuxue@loongson.cn, lvjianmin@loongson.cn
Subject: [musl] add loongarch64 port
Date: Tue, 22 Mar 2022 11:52:35 +0800	[thread overview]
Message-ID: <b8869794-0624-6a5f-df15-1840609306a1@loongson.cn> (raw)

[-- Attachment #1: Type: text/plain, Size: 655 bytes --]

Hi,

Thank you for give us some useful suggestions on the first submit

from 翟小娟 <zhaixiaojuan@loongson.cn>.

we review code and make changes on code specification, code style

and code errors.


The new patch has been published in

https://github.com/loongson/musl/tree/loongarch-v1.0.


The linux kernel has been published in

https://github.com/loongson/linux/tree/loongarch-next.


we alse published gcc, glibc in https://github.com/loongson

and submitting to the community.


we can supply a physical machine remote login for test musl.

It has been compiled and run the libc-test successfully.


Please code review, thanks!


Hongliang Wang


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From f5df725607675b370daec09a14ad130c792fa0d2 Mon Sep 17 00:00:00 2001
From: wanghongliang <wanghongliang@loongson.cn>
Date: Mon, 21 Mar 2022 06:13:20 +0800
Subject: [PATCH] add loongarch64 port.

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        |  20 ++
 arch/loongarch64/bits/fcntl.h              |  40 +++
 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             |  79 ++++++
 arch/loongarch64/bits/stat.h               |  20 ++
 arch/loongarch64/bits/stdint.h             |  20 ++
 arch/loongarch64/bits/syscall.h.in         | 307 +++++++++++++++++++++
 arch/loongarch64/bits/user.h               |   5 +
 arch/loongarch64/crt_arch.h                |  14 +
 arch/loongarch64/kstat.h                   |  21 ++
 arch/loongarch64/pthread_arch.h            |  13 +
 arch/loongarch64/reloc.h                   |  35 +++
 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               |  12 +
 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             |  28 ++
 src/thread/loongarch64/syscall_cp.s        |  29 ++
 34 files changed, 1246 insertions(+)
 create mode 100644 arch/loongarch64/atomic_arch.h
 create mode 100644 arch/loongarch64/bits/alltypes.h.in
 create mode 100644 arch/loongarch64/bits/fcntl.h
 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/kstat.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..38871b5f
--- /dev/null
+++ b/arch/loongarch64/bits/alltypes.h.in
@@ -0,0 +1,20 @@
+#define _Addr long
+#define _Int64 long
+#define _Reg long
+
+#define __BYTE_ORDER 1234
+#define __LONG_MAX 0x7fffffffffffffffL
+
+TYPEDEF __builtin_va_list va_list;
+TYPEDEF __builtin_va_list __isoc_va_list;
+
+#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;
diff --git a/arch/loongarch64/bits/fcntl.h b/arch/loongarch64/bits/fcntl.h
new file mode 100644
index 00000000..9bcbb7ff
--- /dev/null
+++ b/arch/loongarch64/bits/fcntl.h
@@ -0,0 +1,40 @@
+#define O_CREAT        0100
+#define O_EXCL         0200
+#define O_NOCTTY       0400
+#define O_TRUNC       01000
+#define O_APPEND      02000
+#define O_NONBLOCK    04000
+#define O_DSYNC      010000
+#define O_SYNC     04010000
+#define O_RSYNC    04010000
+#define O_DIRECTORY 0200000
+#define O_NOFOLLOW  0400000
+#define O_CLOEXEC  02000000
+
+#define O_ASYNC      020000
+#define O_DIRECT     040000
+#define O_LARGEFILE 0100000
+#define O_NOATIME  01000000
+#define O_PATH    010000000
+#define O_TMPFILE 020000000
+#define O_NDELAY O_NONBLOCK
+
+#define F_DUPFD  0
+#define F_GETFD  1
+#define F_SETFD  2
+#define F_GETFL  3
+#define F_SETFL  4
+
+#define F_SETOWN 8
+#define F_GETOWN 9
+#define F_SETSIG 10
+#define F_GETSIG 11
+
+#define F_GETLK  5
+#define F_SETLK  6
+#define F_SETLKW 7
+
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
+
+#define F_GETOWNER_UIDS 17
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..a28ec91a
--- /dev/null
+++ b/arch/loongarch64/bits/signal.h
@@ -0,0 +1,79 @@
+#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[0] __attribute__((__aligned__(16)));
+}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;
+	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 64
diff --git a/arch/loongarch64/bits/stat.h b/arch/loongarch64/bits/stat.h
new file mode 100644
index 00000000..b620e142
--- /dev/null
+++ b/arch/loongarch64/bits/stat.h
@@ -0,0 +1,20 @@
+struct stat {
+	dev_t st_dev;
+	int __pad1[3];
+	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 int __pad2[2];
+	off_t st_size;
+	int __pad3;
+	struct timespec st_atim;
+	struct timespec st_mtim;
+	struct timespec st_ctim;
+	blksize_t st_blksize;
+	unsigned int __pad4;
+	blkcnt_t st_blocks;
+	int __pad5[14];
+};
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..1f2c924a
--- /dev/null
+++ b/arch/loongarch64/bits/syscall.h.in
@@ -0,0 +1,307 @@
+#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 __NR3264_fstatat                79
+#define __NR3264_fstat                  80
+#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_newfstatat                 __NR3264_fstatat
+#define __NR_fstat                      __NR3264_fstat
+#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/kstat.h b/arch/loongarch64/kstat.h
new file mode 100644
index 00000000..4e39ffac
--- /dev/null
+++ b/arch/loongarch64/kstat.h
@@ -0,0 +1,21 @@
+struct kstat {
+	dev_t st_dev;
+	ino_t st_ino;
+	mode_t st_mode;
+	nlink_t st_nlink;
+	uid_t st_uid;
+	gid_t st_gid;
+	dev_t st_rdev;
+	unsigned long __pad1;
+	off_t st_size;
+	unsigned st_blksize;
+	int __pad2;
+	blkcnt_t st_blocks;
+	long st_atime_sec;
+	unsigned long st_atime_nsec;
+	long st_mtime_sec;
+	unsigned long st_mtime_nsec;
+	long st_ctime_sec;
+	unsigned long st_ctime_nsec;
+	unsigned __unused[2];
+};
diff --git a/arch/loongarch64/pthread_arch.h b/arch/loongarch64/pthread_arch.h
new file mode 100644
index 00000000..27f50e4c
--- /dev/null
+++ b/arch/loongarch64/pthread_arch.h
@@ -0,0 +1,13 @@
+static inline uintptr_t __get_tp()
+{
+	uintptr_t tp;
+	__asm__ ("or %0, $tp, $zero" : "=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..249cb40c
--- /dev/null
+++ b/arch/loongarch64/reloc.h
@@ -0,0 +1,35 @@
+#ifndef __RELOC_H__
+#define __RELOC_H__
+
+#define _GNU_SOURCE
+#include <endian.h>
+
+#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, $zero \n" \
+	: "=r"(*(fp)) : : "memory" )
+
+#endif
diff --git a/arch/loongarch64/syscall_arch.h b/arch/loongarch64/syscall_arch.h
new file mode 100644
index 00000000..ddd29578
--- /dev/null
+++ b/arch/loongarch64/syscall_arch.h
@@ -0,0 +1,137 @@
+#define __SYSCALL_LL_E(x) (x)
+#define __SYSCALL_LL_O(x) (x)
+
+#define SYSCALL_CLOBBERLIST \
+	"$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 ca5cbc0b..72f4969c 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 5170f3e2..301fc56b 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -696,6 +696,11 @@ 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
 
 
 
@@ -3287,6 +3292,67 @@ 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..10ac5c7f
--- /dev/null
+++ b/src/ldso/loongarch64/dlsym.s
@@ -0,0 +1,12 @@
+.global dlsym
+.hidden __dlsym
+.type   dlsym,@function
+dlsym:
+	move	$a2, $ra
+	la.global	$r16, __dlsym
+	addi.d 	$sp, $sp, -8
+	st.d	$ra, $sp, 0
+	jirl	$ra, $r16, 0
+	ld.d	$ra, $sp, 0
+	addi.d	$sp, $sp, 8
+	jirl	$r0, $ra, 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..a1ac988c
--- /dev/null
+++ b/src/thread/loongarch64/clone.s
@@ -0,0 +1,28 @@
+#__clone(func, stack, flags, arg, ptid, tls, ctid)
+#         a0,    a1,   a2,    a3,  a4,  a5,   a6
+# sys_clone(flags, stack, ptid, ctid, tls)
+#            a0,    a1,   a2,    a3,  a4
+
+.global	__clone
+.hidden __clone
+.type	__clone,@function
+__clone:
+	# Save function pointer and argument pointer on new thread stack
+	addi.d	$a1, $a1, -16
+	st.d	$a0, $a1, 0	# save function pointer
+	st.d	$a3, $a1, 8	# save argument pointer
+	or	$a0, $a2, $zero
+	or	$a2, $a4, $zero
+	or	$a3, $a6, $zero
+	or	$a4, $a5, $zero
+	ori	$a7, $zero, 220
+	syscall 0		# call clone
+
+	beqz	$a0, 1f		# whether child process
+	jirl	$zero, $ra, 0	# parent process return
+1:
+	ld.d	$t8, $sp, 0     # function pointer
+	ld.d	$a0, $sp, 8     # argument pointer
+	jirl	$ra, $t8, 0     # call the user's function
+	ori	$a7, $zero, 93
+	syscall	0		# child process exit
diff --git a/src/thread/loongarch64/syscall_cp.s b/src/thread/loongarch64/syscall_cp.s
new file mode 100644
index 00000000..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


             reply	other threads:[~2022-03-22  3:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-22  3:52 王洪亮 [this message]
2022-03-22 12:59 ` Rich Felker
2022-03-22 15:06   ` Jeffrey Walton
2022-03-22 16:04     ` Rich Felker
2022-03-24  3:01       ` 王洪亮
2022-03-24  2:22   ` 王洪亮
2022-03-22 19:03 ` Rich Felker
2022-03-22 20:36   ` Arnd Bergmann
2022-03-24  1:53     ` 王洪亮
2022-03-24  1:35   ` 王洪亮
2022-03-29  8:12 ` [musl] " 王洪亮
2022-03-29  8:26   ` Arnd Bergmann

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