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Subject: Re: [musl] Re: add loongarch64 port v4

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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
>>>

--------------0CBDE568925E435A3E8BA231
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<html>
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    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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  <body>
    <p>Hi, Rich</p>
    <p><span id="w_6" class="high-light-bg" style="background: rgb(67,
        149, 255); color: rgb(255, 255, 255); font-family: Arial,
        &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, STHeiti,
        &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;,
        sans-serif; font-size: 14px; font-style: normal;
        font-variant-ligatures: normal; font-variant-caps: normal;
        font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: left; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; text-decoration-thickness:
        initial; text-decoration-style: initial; text-decoration-color:
        initial;"></span><span id="w_7" class="high-light-bg"
        style="background: rgb(67, 149, 255); color: rgb(255, 255, 255);
        font-family: Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans
        GB&quot;, STHeiti, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi
        Micro Hei&quot;, sans-serif; font-size: 14px; font-style:
        normal; font-variant-ligatures: normal; font-variant-caps:
        normal; font-weight: 400; letter-spacing: normal; orphans: 2;
        text-align: left; text-indent: 0px; text-transform: none;
        white-space: normal; widows: 2; word-spacing: 0px;
        -webkit-text-stroke-width: 0px; text-decoration-thickness:
        initial; text-decoration-style: initial; text-decoration-color:
        initial;"></span>I'm Looking forward to your reply,thank you.
    </p>
    <div class="moz-cite-prefix">在 2022/7/5 下午8:56, 王洪亮 写道:<br>
    </div>
    <blockquote type="cite"
      cite="mid:61ffb0ce-85fc-49d9-8599-22c2fa2a6ed5@loongson.cn">Hi,
      Rich
      <br>
      <br>
      Have you reviewed it?
      <br>
      This patch has some new problems?
      <br>
      <br>
      在 2022/6/23 上午9:59, Rich Felker 写道:
      <br>
      <blockquote type="cite">Hi. I just haven't gotten to reviewing it
        again. I'll try to take a
        <br>
        good look in the next day or two.
        <br>
        <br>
        On Thu, Jun 23, 2022 at 09:30:55AM +0800, 王洪亮 wrote:
        <br>
        <blockquote type="cite">Hi,  Rich
          <br>
          <br>
            this patch has any other problems need to be modified?
          <br>
          <br>
          Looking forward to your reply. thanks.
          <br>
          <br>
          <br>
          Hongliang Wang
          <br>
          <br>
          在 2022/6/20 下午5:49, 王洪亮 写道:
          <br>
          <blockquote type="cite">Hi, Rich
            <br>
            <br>
            1. this patch has any other problems need to be modified?
            <br>
            <br>
            2.what are the suggestions for support LA32 later?
            <br>
            <br>
            <br>
            在 2022/6/14 下午3:23, 王洪亮 写道:
            <br>
            <blockquote type="cite">Hi,
              <br>
              <br>
              1. this patch has any other problems need to be modified?
              <br>
              <br>
              2.what are the suggestions for support LA32?
              <br>
              <br>
              <br>
              在 2022/6/8 上午11:56, 王洪亮 写道:
              <br>
              <blockquote type="cite">Hi,
                <br>
                <br>
                I published loongarch64 port v4 in
                <br>
                <a class="moz-txt-link-freetext" href="https://github.com/loongson/musl/tree/loongarch-v2.0">https://github.com/loongson/musl/tree/loongarch-v2.0</a>.
                <br>
                <br>
                fixed the following problems:
                <br>
                <br>
                1.fixed  the extension field of struct mcontext
                <br>
                <br>
                2.removed arch/loongarch64/kstat.h
                <br>
                <br>
                3.deleted the incorrect definition in
                arch/loongarch64/reloc.h
                <br>
                <br>
                4.optimize  dlsym
                <br>
                <br>
                please code review if there are any other problems ?
                thanks.
                <br>
                <br>
                I have one questions:
                <br>
                <br>
                Through  add "long__uc_pad" in struct ucontext_t  to
                meet the
                <br>
                extcontext[] 16 bytes alignment,
                <br>
                <br>
                if run in loongarch32, this method not meet the  16
                bytes
                <br>
                alignment requirement. how to do it ?
                <br>
                <br>
                <br>
                Hongliang Wang.
                <br>
                <br>
              </blockquote>
            </blockquote>
          </blockquote>
          &gt;From 5535c500f137c3cb9ad36c7c96e7aaca440c85bd Mon Sep 17
          00:00:00 2001
          <br>
          From: wanghongliang <a class="moz-txt-link-rfc2396E" href="mailto:wanghongliang@loongson.cn">&lt;wanghongliang@loongson.cn&gt;</a>
          <br>
          Date: Wed, 8 Jun 2022 01:42:12 +0800
          <br>
          Subject: [PATCH] add loongarch64 port v4.
          <br>
          <br>
          Author: xiaojuanZhai <a class="moz-txt-link-rfc2396E" href="mailto:zhaixiaojuan@loongson.cn">&lt;zhaixiaojuan@loongson.cn&gt;</a>
          <br>
          Author: meidanLi <a class="moz-txt-link-rfc2396E" href="mailto:limeidan@loongson.cn">&lt;limeidan@loongson.cn&gt;</a>
          <br>
          Author: guoqiChen <a class="moz-txt-link-rfc2396E" href="mailto:chenguoqi@loongson.cn">&lt;chenguoqi@loongson.cn&gt;</a>
          <br>
          Author: xiaolinZhao <a class="moz-txt-link-rfc2396E" href="mailto:zhaoxiaolin@loongson.cn">&lt;zhaoxiaolin@loongson.cn&gt;</a>
          <br>
          Author: Fanpeng <a class="moz-txt-link-rfc2396E" href="mailto:fanpeng@loongson.cn">&lt;fanpeng@loongson.cn&gt;</a>
          <br>
          Author: jiantaoShan <a class="moz-txt-link-rfc2396E" href="mailto:shanjiantao@loongson.cn">&lt;shanjiantao@loongson.cn&gt;</a>
          <br>
          Author: xuhuiQiang <a class="moz-txt-link-rfc2396E" href="mailto:qiangxuhui@loongson.cn">&lt;qiangxuhui@loongson.cn&gt;</a>
          <br>
          Author: jingyunHua <a class="moz-txt-link-rfc2396E" href="mailto:huajingyun@loongson.cn">&lt;huajingyun@loongson.cn&gt;</a>
          <br>
          Author: liuxue <a class="moz-txt-link-rfc2396E" href="mailto:liuxue@loongson.cn">&lt;liuxue@loongson.cn&gt;</a>
          <br>
          Author: wanghongliang &lt;<a class="moz-txt-link-abbreviated" href="mailto:wanghongliang@loongson.cn">wanghongliang@loongson.cn</a>
          <br>
          <br>
          Signed-off-by: wanghongliang <a class="moz-txt-link-rfc2396E" href="mailto:wanghongliang@loongson.cn">&lt;wanghongliang@loongson.cn&gt;</a>
          <br>
          ---
          <br>
            arch/loongarch64/atomic_arch.h             |  53 ++++
          <br>
            arch/loongarch64/bits/alltypes.h.in        |  18 ++
          <br>
            arch/loongarch64/bits/fenv.h               |  20 ++
          <br>
            arch/loongarch64/bits/float.h              |  16 ++
          <br>
            arch/loongarch64/bits/hwcap.h              |  14 +
          <br>
            arch/loongarch64/bits/posix.h              |   2 +
          <br>
            arch/loongarch64/bits/ptrace.h             |   4 +
          <br>
            arch/loongarch64/bits/reg.h                |  66 +++++
          <br>
            arch/loongarch64/bits/setjmp.h             |   1 +
          <br>
            arch/loongarch64/bits/signal.h             |  80 ++++++
          <br>
            arch/loongarch64/bits/stat.h               |  18 ++
          <br>
            arch/loongarch64/bits/stdint.h             |  20 ++
          <br>
            arch/loongarch64/bits/syscall.h.in         | 303
          +++++++++++++++++++++
          <br>
            arch/loongarch64/bits/user.h               |   5 +
          <br>
            arch/loongarch64/crt_arch.h                |  14 +
          <br>
            arch/loongarch64/pthread_arch.h            |  13 +
          <br>
            arch/loongarch64/reloc.h                   |  27 ++
          <br>
            arch/loongarch64/syscall_arch.h            | 137 ++++++++++
          <br>
            configure                                  |   1 +
          <br>
            crt/loongarch64/crti.s                     |  15 +
          <br>
            crt/loongarch64/crtn.s                     |  12 +
          <br>
            include/elf.h                              |  66 +++++
          <br>
            src/fenv/loongarch64/fenv.S                |  72 +++++
          <br>
            src/ldso/loongarch64/dlsym.s               |   7 +
          <br>
            src/setjmp/loongarch64/longjmp.S           |  37 +++
          <br>
            src/setjmp/loongarch64/setjmp.S            |  34 +++
          <br>
            src/signal/loongarch64/restore.s           |  10 +
          <br>
            src/signal/loongarch64/sigsetjmp.s         |  29 ++
          <br>
            src/thread/loongarch64/__set_thread_area.s |   7 +
          <br>
            src/thread/loongarch64/__unmapself.s       |   7 +
          <br>
            src/thread/loongarch64/clone.s             |  47 ++++
          <br>
            src/thread/loongarch64/syscall_cp.s        |  29 ++
          <br>
            32 files changed, 1184 insertions(+)
          <br>
            create mode 100644 arch/loongarch64/atomic_arch.h
          <br>
            create mode 100644 arch/loongarch64/bits/alltypes.h.in
          <br>
            create mode 100644 arch/loongarch64/bits/fenv.h
          <br>
            create mode 100644 arch/loongarch64/bits/float.h
          <br>
            create mode 100644 arch/loongarch64/bits/hwcap.h
          <br>
            create mode 100644 arch/loongarch64/bits/posix.h
          <br>
            create mode 100644 arch/loongarch64/bits/ptrace.h
          <br>
            create mode 100644 arch/loongarch64/bits/reg.h
          <br>
            create mode 100644 arch/loongarch64/bits/setjmp.h
          <br>
            create mode 100644 arch/loongarch64/bits/signal.h
          <br>
            create mode 100644 arch/loongarch64/bits/stat.h
          <br>
            create mode 100644 arch/loongarch64/bits/stdint.h
          <br>
            create mode 100644 arch/loongarch64/bits/syscall.h.in
          <br>
            create mode 100644 arch/loongarch64/bits/user.h
          <br>
            create mode 100644 arch/loongarch64/crt_arch.h
          <br>
            create mode 100644 arch/loongarch64/pthread_arch.h
          <br>
            create mode 100644 arch/loongarch64/reloc.h
          <br>
            create mode 100644 arch/loongarch64/syscall_arch.h
          <br>
            create mode 100644 crt/loongarch64/crti.s
          <br>
            create mode 100644 crt/loongarch64/crtn.s
          <br>
            create mode 100644 src/fenv/loongarch64/fenv.S
          <br>
            create mode 100644 src/ldso/loongarch64/dlsym.s
          <br>
            create mode 100644 src/setjmp/loongarch64/longjmp.S
          <br>
            create mode 100644 src/setjmp/loongarch64/setjmp.S
          <br>
            create mode 100644 src/signal/loongarch64/restore.s
          <br>
            create mode 100644 src/signal/loongarch64/sigsetjmp.s
          <br>
            create mode 100644
          src/thread/loongarch64/__set_thread_area.s
          <br>
            create mode 100644 src/thread/loongarch64/__unmapself.s
          <br>
            create mode 100644 src/thread/loongarch64/clone.s
          <br>
            create mode 100644 src/thread/loongarch64/syscall_cp.s
          <br>
          <br>
          diff --git a/arch/loongarch64/atomic_arch.h
          b/arch/loongarch64/atomic_arch.h
          <br>
          new file mode 100644
          <br>
          index 00000000..bf4805c9
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/atomic_arch.h
          <br>
          @@ -0,0 +1,53 @@
          <br>
          +#define a_ll a_ll
          <br>
          +static inline int a_ll(volatile int *p)
          <br>
          +{
          <br>
          +    int v;
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "ll.w %0, %1"
          <br>
          +        : "=r"(v)
          <br>
          +        : "ZC"(*p));
          <br>
          +    return v;
          <br>
          +}
          <br>
          +
          <br>
          +#define a_sc a_sc
          <br>
          +static inline int a_sc(volatile int *p, int v)
          <br>
          +{
          <br>
          +    int r;
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "sc.w %0, %1"
          <br>
          +        : "=r"(r), "=ZC"(*p)
          <br>
          +        : "0"(v) : "memory");
          <br>
          +    return r;
          <br>
          +}
          <br>
          +
          <br>
          +#define a_ll_p a_ll_p
          <br>
          +static inline void *a_ll_p(volatile void *p)
          <br>
          +{
          <br>
          +    void *v;
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "ll.d %0, %1"
          <br>
          +        : "=r"(v)
          <br>
          +        : "ZC"(*(void *volatile *)p));
          <br>
          +    return v;
          <br>
          +}
          <br>
          +
          <br>
          +#define a_sc_p a_sc_p
          <br>
          +static inline int a_sc_p(volatile void *p, void *v)
          <br>
          +{
          <br>
          +    long r;
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "sc.d %0, %1"
          <br>
          +        : "=r"(r), "=ZC"(*(void *volatile *)p)
          <br>
          +        : "0"(v)
          <br>
          +        : "memory");
          <br>
          +    return r;
          <br>
          +}
          <br>
          +
          <br>
          +#define a_barrier a_barrier
          <br>
          +static inline void a_barrier()
          <br>
          +{
          <br>
          +    __asm__ __volatile__ ("dbar 0" : : : "memory");
          <br>
          +}
          <br>
          +
          <br>
          +#define a_pre_llsc a_barrier
          <br>
          +#define a_post_llsc a_barrier
          <br>
          diff --git a/arch/loongarch64/bits/alltypes.h.in
          b/arch/loongarch64/bits/alltypes.h.in
          <br>
          new file mode 100644
          <br>
          index 00000000..d1807aca
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/alltypes.h.in
          <br>
          @@ -0,0 +1,18 @@
          <br>
          +#define _Addr long
          <br>
          +#define _Int64 long
          <br>
          +#define _Reg long
          <br>
          +
          <br>
          +#define __BYTE_ORDER 1234
          <br>
          +#define __LONG_MAX 0x7fffffffffffffffL
          <br>
          +
          <br>
          +#ifndef __cplusplus
          <br>
          +TYPEDEF int wchar_t;
          <br>
          +#endif
          <br>
          +
          <br>
          +TYPEDEF float float_t;
          <br>
          +TYPEDEF double double_t;
          <br>
          +
          <br>
          +TYPEDEF struct { long long __ll; long double __ld; }
          max_align_t;
          <br>
          +
          <br>
          +TYPEDEF unsigned nlink_t;
          <br>
          +TYPEDEF int blksize_t;
          <br>
          diff --git a/arch/loongarch64/bits/fenv.h
          b/arch/loongarch64/bits/fenv.h
          <br>
          new file mode 100644
          <br>
          index 00000000..264cafb5
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/fenv.h
          <br>
          @@ -0,0 +1,20 @@
          <br>
          +#define FE_INEXACT    0x010000
          <br>
          +#define FE_UNDERFLOW  0x020000
          <br>
          +#define FE_OVERFLOW   0x040000
          <br>
          +#define FE_DIVBYZERO  0x080000
          <br>
          +#define FE_INVALID    0x100000
          <br>
          +
          <br>
          +#define FE_ALL_EXCEPT 0x1F0000
          <br>
          +
          <br>
          +#define FE_TONEAREST  0x000
          <br>
          +#define FE_TOWARDZERO 0x100
          <br>
          +#define FE_UPWARD     0x200
          <br>
          +#define FE_DOWNWARD   0x300
          <br>
          +
          <br>
          +typedef unsigned fexcept_t;
          <br>
          +
          <br>
          +typedef struct {
          <br>
          +    unsigned __cw;
          <br>
          +} fenv_t;
          <br>
          +
          <br>
          +#define FE_DFL_ENV ((const fenv_t *) -1)
          <br>
          diff --git a/arch/loongarch64/bits/float.h
          b/arch/loongarch64/bits/float.h
          <br>
          new file mode 100644
          <br>
          index 00000000..719c7908
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/float.h
          <br>
          @@ -0,0 +1,16 @@
          <br>
          +#define FLT_EVAL_METHOD 0
          <br>
          +
          <br>
          +#define LDBL_TRUE_MIN
          6.47517511943802511092443895822764655e-4966L
          <br>
          +#define LDBL_MIN 3.36210314311209350626267781732175260e-4932L
          <br>
          +#define LDBL_MAX 1.18973149535723176508575932662800702e+4932L
          <br>
          +#define LDBL_EPSILON
          1.92592994438723585305597794258492732e-34L
          <br>
          +
          <br>
          +#define LDBL_MANT_DIG 113
          <br>
          +#define LDBL_MIN_EXP (-16381)
          <br>
          +#define LDBL_MAX_EXP 16384
          <br>
          +
          <br>
          +#define LDBL_DIG 33
          <br>
          +#define LDBL_MIN_10_EXP (-4931)
          <br>
          +#define LDBL_MAX_10_EXP 4932
          <br>
          +
          <br>
          +#define DECIMAL_DIG 36
          <br>
          diff --git a/arch/loongarch64/bits/hwcap.h
          b/arch/loongarch64/bits/hwcap.h
          <br>
          new file mode 100644
          <br>
          index 00000000..c9fa08f6
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/hwcap.h
          <br>
          @@ -0,0 +1,14 @@
          <br>
          +/* HWCAP - Hardware Capabilities.
          <br>
          + * Hardware information is not clear at present, leave it
          blank.
          <br>
          + */
          <br>
          +#define HWCAP_LOONGARCH_CPUCFG    (1 &lt;&lt; 0)
          <br>
          +#define HWCAP_LOONGARCH_FPU    (1 &lt;&lt; 1)
          <br>
          +#define HWCAP_LOONGARCH_LSX    (1 &lt;&lt; 2)  /* support
          128bit vectors*/
          <br>
          +#define HWCAP_LOONGARCH_LASX    (1 &lt;&lt; 3)  /* support
          256bit vectors*/
          <br>
          +#define HWCAP_LOONGARCH_LBT    (1 &lt;&lt; 4)  /* support
          LBT*/
          <br>
          +#define HWCAP_LOONGARCH_LVZ    (1 &lt;&lt; 5)  /* support
          virtualization expansion*/
          <br>
          +#define HWCAP_LOONGARCH_CRC32    (1 &lt;&lt; 7)  /* support
          CRC32 check*/
          <br>
          +#define HWCAP_LOONGARCH_AES    (1 &lt;&lt; 6)
          <br>
          +#define HWCAP_LOONGARCH_SHA1    (1 &lt;&lt; 8)
          <br>
          +#define HWCAP_LOONGARCH_SHA2    (1 &lt;&lt; 9)
          <br>
          +#define HWCAP_LOONGARCH_SHA3    (1 &lt;&lt; 10)
          <br>
          diff --git a/arch/loongarch64/bits/posix.h
          b/arch/loongarch64/bits/posix.h
          <br>
          new file mode 100644
          <br>
          index 00000000..8068ce98
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/posix.h
          <br>
          @@ -0,0 +1,2 @@
          <br>
          +#define _POSIX_V6_LP64_OFF64 1
          <br>
          +#define _POSIX_V7_LP64_OFF64 1
          <br>
          diff --git a/arch/loongarch64/bits/ptrace.h
          b/arch/loongarch64/bits/ptrace.h
          <br>
          new file mode 100644
          <br>
          index 00000000..741fc668
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/ptrace.h
          <br>
          @@ -0,0 +1,4 @@
          <br>
          +#define PTRACE_GET_THREAD_AREA    25
          <br>
          +#define PTRACE_SET_THREAD_AREA    26
          <br>
          +#define PTRACE_GET_WATCH_REGS    0xd0
          <br>
          +#define PTRACE_SET_WATCH_REGS    0xd1
          <br>
          diff --git a/arch/loongarch64/bits/reg.h
          b/arch/loongarch64/bits/reg.h
          <br>
          new file mode 100644
          <br>
          index 00000000..5d3f92c5
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/reg.h
          <br>
          @@ -0,0 +1,66 @@
          <br>
          +#undef __WORDSIZE
          <br>
          +#define __WORDSIZE 64
          <br>
          +#define LOONGARCH64_EF_R0   0
          <br>
          +#define LOONGARCH64_EF_R1   1
          <br>
          +#define LOONGARCH64_EF_R2   2
          <br>
          +#define LOONGARCH64_EF_R3   3
          <br>
          +#define LOONGARCH64_EF_R4   4
          <br>
          +#define LOONGARCH64_EF_R5   5
          <br>
          +#define LOONGARCH64_EF_R6   6
          <br>
          +#define LOONGARCH64_EF_R7   7
          <br>
          +#define LOONGARCH64_EF_R8   8
          <br>
          +#define LOONGARCH64_EF_R9   9
          <br>
          +#define LOONGARCH64_EF_R10    10
          <br>
          +#define LOONGARCH64_EF_R11    11
          <br>
          +#define LOONGARCH64_EF_R12    12
          <br>
          +#define LOONGARCH64_EF_R13    13
          <br>
          +#define LOONGARCH64_EF_R14    14
          <br>
          +#define LOONGARCH64_EF_R15    15
          <br>
          +#define LOONGARCH64_EF_R16    16
          <br>
          +#define LOONGARCH64_EF_R17    17
          <br>
          +#define LOONGARCH64_EF_R18    18
          <br>
          +#define LOONGARCH64_EF_R19    19
          <br>
          +#define LOONGARCH64_EF_R20    20
          <br>
          +#define LOONGARCH64_EF_R21    21
          <br>
          +#define LOONGARCH64_EF_R22    22
          <br>
          +#define LOONGARCH64_EF_R23    23
          <br>
          +#define LOONGARCH64_EF_R24    24
          <br>
          +#define LOONGARCH64_EF_R25    25
          <br>
          +#define LOONGARCH64_EF_R26    26
          <br>
          +#define LOONGARCH64_EF_R27    27
          <br>
          +#define LOONGARCH64_EF_R28    28
          <br>
          +#define LOONGARCH64_EF_R29    29
          <br>
          +#define LOONGARCH64_EF_R30    30
          <br>
          +#define LOONGARCH64_EF_R31    31
          <br>
          +
          <br>
          +#define LOONGARCH64_EF_SIZE   304 /* size in bytes */
          <br>
          +
          <br>
          +#define EF_R0     LOONGARCH64_EF_R0
          <br>
          +#define EF_R1     LOONGARCH64_EF_R1
          <br>
          +#define EF_R2     LOONGARCH64_EF_R2
          <br>
          +#define EF_R3     LOONGARCH64_EF_R3
          <br>
          +#define EF_R4     LOONGARCH64_EF_R4
          <br>
          +#define EF_R5     LOONGARCH64_EF_R5
          <br>
          +#define EF_R6     LOONGARCH64_EF_R6
          <br>
          +#define EF_R7     LOONGARCH64_EF_R7
          <br>
          +#define EF_R8     LOONGARCH64_EF_R8
          <br>
          +#define EF_R9     LOONGARCH64_EF_R9
          <br>
          +#define EF_R10      LOONGARCH64_EF_R10
          <br>
          +#define EF_R11      LOONGARCH64_EF_R11
          <br>
          +#define EF_R12      LOONGARCH64_EF_R12
          <br>
          +#define EF_R13      LOONGARCH64_EF_R13
          <br>
          +#define EF_R14      LOONGARCH64_EF_R14
          <br>
          +#define EF_R15      LOONGARCH64_EF_R15
          <br>
          +#define EF_R16      LOONGARCH64_EF_R16
          <br>
          +#define EF_R17      LOONGARCH64_EF_R17
          <br>
          +#define EF_R18      LOONGARCH64_EF_R18
          <br>
          +#define EF_R19      LOONGARCH64_EF_R19
          <br>
          +#define EF_R20      LOONGARCH64_EF_R20
          <br>
          +#define EF_R21      LOONGARCH64_EF_R21
          <br>
          +#define EF_R22      LOONGARCH64_EF_R22
          <br>
          +#define EF_R23      LOONGARCH64_EF_R23
          <br>
          +#define EF_R24      LOONGARCH64_EF_R24
          <br>
          +#define EF_R25      LOONGARCH64_EF_R25
          <br>
          +#define EF_R26      LOONGARCH64_EF_R26
          <br>
          +#define EF_R27      LOONGARCH64_EF_R27
          <br>
          +#define EF_R28      LOONGARCH64_EF_R28
          <br>
          diff --git a/arch/loongarch64/bits/setjmp.h
          b/arch/loongarch64/bits/setjmp.h
          <br>
          new file mode 100644
          <br>
          index 00000000..f4a7f8a3
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/setjmp.h
          <br>
          @@ -0,0 +1 @@
          <br>
          +typedef unsigned long long __jmp_buf[22];
          <br>
          diff --git a/arch/loongarch64/bits/signal.h
          b/arch/loongarch64/bits/signal.h
          <br>
          new file mode 100644
          <br>
          index 00000000..4db790e7
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/signal.h
          <br>
          @@ -0,0 +1,80 @@
          <br>
          +#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
          <br>
          + || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) ||
          defined(_BSD_SOURCE)
          <br>
          +
          <br>
          +#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) ||
          defined(_BSD_SOURCE)
          <br>
          +#define MINSIGSTKSZ 4096
          <br>
          +#define SIGSTKSZ 16384
          <br>
          +#endif
          <br>
          +
          <br>
          +typedef unsigned long greg_t, gregset_t[32];
          <br>
          +
          <br>
          +typedef struct sigcontext {
          <br>
          +    unsigned long pc;
          <br>
          +    gregset_t gregs;
          <br>
          +    unsigned int flags;
          <br>
          +    unsigned long extcontext[];
          <br>
          +} mcontext_t;
          <br>
          +
          <br>
          +struct sigaltstack {
          <br>
          +    void *ss_sp;
          <br>
          +    int ss_flags;
          <br>
          +    size_t ss_size;
          <br>
          +};
          <br>
          +
          <br>
          +typedef struct __ucontext
          <br>
          +{
          <br>
          +    unsigned long uc_flags;
          <br>
          +    struct __ucontext *uc_link;
          <br>
          +    stack_t uc_stack;
          <br>
          +    sigset_t uc_sigmask;
          <br>
          +    long __uc_pad;
          <br>
          +    mcontext_t uc_mcontext;
          <br>
          +} ucontext_t;
          <br>
          +
          <br>
          +#define SA_NOCLDSTOP  1
          <br>
          +#define SA_NOCLDWAIT  2
          <br>
          +#define SA_SIGINFO    4
          <br>
          +#define SA_ONSTACK    0x08000000
          <br>
          +#define SA_RESTART    0x10000000
          <br>
          +#define SA_NODEFER    0x40000000
          <br>
          +#define SA_RESETHAND  0x80000000
          <br>
          +#define SA_RESTORER   0x04000000
          <br>
          +
          <br>
          +#endif
          <br>
          +
          <br>
          +#define SIGHUP           1
          <br>
          +#define SIGINT           2
          <br>
          +#define SIGQUIT          3
          <br>
          +#define SIGILL           4
          <br>
          +#define SIGTRAP          5
          <br>
          +#define SIGABRT          6
          <br>
          +#define SIGIOT           SIGABRT
          <br>
          +#define SIGBUS           7
          <br>
          +#define SIGFPE           8
          <br>
          +#define SIGKILL          9
          <br>
          +#define SIGUSR1         10
          <br>
          +#define SIGSEGV         11
          <br>
          +#define SIGUSR2         12
          <br>
          +#define SIGPIPE         13
          <br>
          +#define SIGALRM         14
          <br>
          +#define SIGTERM         15
          <br>
          +#define SIGSTKFLT       16
          <br>
          +#define SIGCHLD         17
          <br>
          +#define SIGCONT         18
          <br>
          +#define SIGSTOP         19
          <br>
          +#define SIGTSTP         20
          <br>
          +#define SIGTTIN         21
          <br>
          +#define SIGTTOU         22
          <br>
          +#define SIGURG          23
          <br>
          +#define SIGXCPU         24
          <br>
          +#define SIGXFSZ         25
          <br>
          +#define SIGVTALRM       26
          <br>
          +#define SIGPROF         27
          <br>
          +#define SIGWINCH        28
          <br>
          +#define SIGIO           29
          <br>
          +#define SIGPOLL         SIGIO
          <br>
          +#define SIGPWR          30
          <br>
          +#define SIGSYS          31
          <br>
          +#define SIGUNUSED       SIGSYS
          <br>
          +
          <br>
          +#define _NSIG 65
          <br>
          diff --git a/arch/loongarch64/bits/stat.h
          b/arch/loongarch64/bits/stat.h
          <br>
          new file mode 100644
          <br>
          index 00000000..b7f4221b
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/stat.h
          <br>
          @@ -0,0 +1,18 @@
          <br>
          +struct stat {
          <br>
          +    dev_t st_dev;
          <br>
          +    ino_t st_ino;
          <br>
          +    mode_t st_mode;
          <br>
          +    nlink_t st_nlink;
          <br>
          +    uid_t st_uid;
          <br>
          +    gid_t st_gid;
          <br>
          +    dev_t st_rdev;
          <br>
          +    unsigned long __pad;
          <br>
          +    off_t st_size;
          <br>
          +    blksize_t st_blksize;
          <br>
          +    int __pad2;
          <br>
          +    blkcnt_t st_blocks;
          <br>
          +    struct timespec st_atim;
          <br>
          +    struct timespec st_mtim;
          <br>
          +    struct timespec st_ctim;
          <br>
          +    unsigned __unused[2];
          <br>
          +};
          <br>
          diff --git a/arch/loongarch64/bits/stdint.h
          b/arch/loongarch64/bits/stdint.h
          <br>
          new file mode 100644
          <br>
          index 00000000..1bb147f2
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/stdint.h
          <br>
          @@ -0,0 +1,20 @@
          <br>
          +typedef int32_t int_fast16_t;
          <br>
          +typedef int32_t int_fast32_t;
          <br>
          +typedef uint32_t uint_fast16_t;
          <br>
          +typedef uint32_t uint_fast32_t;
          <br>
          +
          <br>
          +#define INT_FAST16_MIN  INT32_MIN
          <br>
          +#define INT_FAST32_MIN  INT32_MIN
          <br>
          +
          <br>
          +#define INT_FAST16_MAX  INT32_MAX
          <br>
          +#define INT_FAST32_MAX  INT32_MAX
          <br>
          +
          <br>
          +#define UINT_FAST16_MAX UINT32_MAX
          <br>
          +#define UINT_FAST32_MAX UINT32_MAX
          <br>
          +
          <br>
          +#define INTPTR_MIN      INT64_MIN
          <br>
          +#define INTPTR_MAX      INT64_MAX
          <br>
          +#define UINTPTR_MAX     UINT64_MAX
          <br>
          +#define PTRDIFF_MIN     INT64_MIN
          <br>
          +#define PTRDIFF_MAX     INT64_MAX
          <br>
          +#define SIZE_MAX        UINT64_MAX
          <br>
          diff --git a/arch/loongarch64/bits/syscall.h.in
          b/arch/loongarch64/bits/syscall.h.in
          <br>
          new file mode 100644
          <br>
          index 00000000..689ff36b
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/syscall.h.in
          <br>
          @@ -0,0 +1,303 @@
          <br>
          +#define __NR_io_setup                   0
          <br>
          +#define __NR_io_destroy                 1
          <br>
          +#define __NR_io_submit                  2
          <br>
          +#define __NR_io_cancel                  3
          <br>
          +#define __NR_io_getevents               4
          <br>
          +#define __NR_setxattr                   5
          <br>
          +#define __NR_lsetxattr                  6
          <br>
          +#define __NR_fsetxattr                  7
          <br>
          +#define __NR_getxattr                   8
          <br>
          +#define __NR_lgetxattr                  9
          <br>
          +#define __NR_fgetxattr                  10
          <br>
          +#define __NR_listxattr                  11
          <br>
          +#define __NR_llistxattr                 12
          <br>
          +#define __NR_flistxattr                 13
          <br>
          +#define __NR_removexattr                14
          <br>
          +#define __NR_lremovexattr               15
          <br>
          +#define __NR_fremovexattr               16
          <br>
          +#define __NR_getcwd                     17
          <br>
          +#define __NR_lookup_dcookie             18
          <br>
          +#define __NR_eventfd2                   19
          <br>
          +#define __NR_epoll_create1              20
          <br>
          +#define __NR_epoll_ctl                  21
          <br>
          +#define __NR_epoll_pwait                22
          <br>
          +#define __NR_dup                        23
          <br>
          +#define __NR_dup3                       24
          <br>
          +#define __NR3264_fcntl                  25
          <br>
          +#define __NR_inotify_init1              26
          <br>
          +#define __NR_inotify_add_watch          27
          <br>
          +#define __NR_inotify_rm_watch           28
          <br>
          +#define __NR_ioctl                      29
          <br>
          +#define __NR_ioprio_set                 30
          <br>
          +#define __NR_ioprio_get                 31
          <br>
          +#define __NR_flock                      32
          <br>
          +#define __NR_mknodat                    33
          <br>
          +#define __NR_mkdirat                    34
          <br>
          +#define __NR_unlinkat                   35
          <br>
          +#define __NR_symlinkat                  36
          <br>
          +#define __NR_linkat                     37
          <br>
          +#define __NR_umount2                    39
          <br>
          +#define __NR_mount                      40
          <br>
          +#define __NR_pivot_root                 41
          <br>
          +#define __NR_nfsservctl                 42
          <br>
          +#define __NR3264_statfs                 43
          <br>
          +#define __NR3264_fstatfs                44
          <br>
          +#define __NR3264_truncate               45
          <br>
          +#define __NR3264_ftruncate              46
          <br>
          +#define __NR_fallocate                  47
          <br>
          +#define __NR_faccessat                  48
          <br>
          +#define __NR_chdir                      49
          <br>
          +#define __NR_fchdir                     50
          <br>
          +#define __NR_chroot                     51
          <br>
          +#define __NR_fchmod                     52
          <br>
          +#define __NR_fchmodat                   53
          <br>
          +#define __NR_fchownat                   54
          <br>
          +#define __NR_fchown                     55
          <br>
          +#define __NR_openat                     56
          <br>
          +#define __NR_close                      57
          <br>
          +#define __NR_vhangup                    58
          <br>
          +#define __NR_pipe2                      59
          <br>
          +#define __NR_quotactl                   60
          <br>
          +#define __NR_getdents64                 61
          <br>
          +#define __NR3264_lseek                  62
          <br>
          +#define __NR_read                       63
          <br>
          +#define __NR_write                      64
          <br>
          +#define __NR_readv                      65
          <br>
          +#define __NR_writev                     66
          <br>
          +#define __NR_pread64                    67
          <br>
          +#define __NR_pwrite64                   68
          <br>
          +#define __NR_preadv                     69
          <br>
          +#define __NR_pwritev                    70
          <br>
          +#define __NR3264_sendfile               71
          <br>
          +#define __NR_pselect6                   72
          <br>
          +#define __NR_ppoll                      73
          <br>
          +#define __NR_signalfd4                  74
          <br>
          +#define __NR_vmsplice                   75
          <br>
          +#define __NR_splice                     76
          <br>
          +#define __NR_tee                        77
          <br>
          +#define __NR_readlinkat                 78
          <br>
          +#define __NR_sync                       81
          <br>
          +#define __NR_fsync                      82
          <br>
          +#define __NR_fdatasync                  83
          <br>
          +#define __NR_sync_file_range            84
          <br>
          +#define __NR_timerfd_create             85
          <br>
          +#define __NR_timerfd_settime            86
          <br>
          +#define __NR_timerfd_gettime            87
          <br>
          +#define __NR_utimensat                  88
          <br>
          +#define __NR_acct                       89
          <br>
          +#define __NR_capget                     90
          <br>
          +#define __NR_capset                     91
          <br>
          +#define __NR_personality                92
          <br>
          +#define __NR_exit                       93
          <br>
          +#define __NR_exit_group                 94
          <br>
          +#define __NR_waitid                     95
          <br>
          +#define __NR_set_tid_address            96
          <br>
          +#define __NR_unshare                    97
          <br>
          +#define __NR_futex                      98
          <br>
          +#define __NR_set_robust_list            99
          <br>
          +#define __NR_get_robust_list            100
          <br>
          +#define __NR_nanosleep                  101
          <br>
          +#define __NR_getitimer                  102
          <br>
          +#define __NR_setitimer                  103
          <br>
          +#define __NR_kexec_load                 104
          <br>
          +#define __NR_init_module                105
          <br>
          +#define __NR_delete_module              106
          <br>
          +#define __NR_timer_create               107
          <br>
          +#define __NR_timer_gettime              108
          <br>
          +#define __NR_timer_getoverrun           109
          <br>
          +#define __NR_timer_settime              110
          <br>
          +#define __NR_timer_delete               111
          <br>
          +#define __NR_clock_settime              112
          <br>
          +#define __NR_clock_gettime              113
          <br>
          +#define __NR_clock_getres               114
          <br>
          +#define __NR_clock_nanosleep            115
          <br>
          +#define __NR_syslog                     116
          <br>
          +#define __NR_ptrace                     117
          <br>
          +#define __NR_sched_setparam             118
          <br>
          +#define __NR_sched_setscheduler         119
          <br>
          +#define __NR_sched_getscheduler         120
          <br>
          +#define __NR_sched_getparam             121
          <br>
          +#define __NR_sched_setaffinity          122
          <br>
          +#define __NR_sched_getaffinity          123
          <br>
          +#define __NR_sched_yield                124
          <br>
          +#define __NR_sched_get_priority_max     125
          <br>
          +#define __NR_sched_get_priority_min     126
          <br>
          +#define __NR_sched_rr_get_interval      127
          <br>
          +#define __NR_restart_syscall            128
          <br>
          +#define __NR_kill                       129
          <br>
          +#define __NR_tkill                      130
          <br>
          +#define __NR_tgkill                     131
          <br>
          +#define __NR_sigaltstack                132
          <br>
          +#define __NR_rt_sigsuspend              133
          <br>
          +#define __NR_rt_sigaction               134
          <br>
          +#define __NR_rt_sigprocmask             135
          <br>
          +#define __NR_rt_sigpending              136
          <br>
          +#define __NR_rt_sigtimedwait            137
          <br>
          +#define __NR_rt_sigqueueinfo            138
          <br>
          +#define __NR_rt_sigreturn               139
          <br>
          +#define __NR_setpriority                140
          <br>
          +#define __NR_getpriority                141
          <br>
          +#define __NR_reboot                     142
          <br>
          +#define __NR_setregid                   143
          <br>
          +#define __NR_setgid                     144
          <br>
          +#define __NR_setreuid                   145
          <br>
          +#define __NR_setuid                     146
          <br>
          +#define __NR_setresuid                  147
          <br>
          +#define __NR_getresuid                  148
          <br>
          +#define __NR_setresgid                  149
          <br>
          +#define __NR_getresgid                  150
          <br>
          +#define __NR_setfsuid                   151
          <br>
          +#define __NR_setfsgid                   152
          <br>
          +#define __NR_times                      153
          <br>
          +#define __NR_setpgid                    154
          <br>
          +#define __NR_getpgid                    155
          <br>
          +#define __NR_getsid                     156
          <br>
          +#define __NR_setsid                     157
          <br>
          +#define __NR_getgroups                  158
          <br>
          +#define __NR_setgroups                  159
          <br>
          +#define __NR_uname                      160
          <br>
          +#define __NR_sethostname                161
          <br>
          +#define __NR_setdomainname              162
          <br>
          +#define __NR_getrlimit                  163
          <br>
          +#define __NR_setrlimit                  164
          <br>
          +#define __NR_getrusage                  165
          <br>
          +#define __NR_umask                      166
          <br>
          +#define __NR_prctl                      167
          <br>
          +#define __NR_getcpu                     168
          <br>
          +#define __NR_gettimeofday               169
          <br>
          +#define __NR_settimeofday               170
          <br>
          +#define __NR_adjtimex                   171
          <br>
          +#define __NR_getpid                     172
          <br>
          +#define __NR_getppid                    173
          <br>
          +#define __NR_getuid                     174
          <br>
          +#define __NR_geteuid                    175
          <br>
          +#define __NR_getgid                     176
          <br>
          +#define __NR_getegid                    177
          <br>
          +#define __NR_gettid                     178
          <br>
          +#define __NR_sysinfo                    179
          <br>
          +#define __NR_mq_open                    180
          <br>
          +#define __NR_mq_unlink                  181
          <br>
          +#define __NR_mq_timedsend               182
          <br>
          +#define __NR_mq_timedreceive            183
          <br>
          +#define __NR_mq_notify                  184
          <br>
          +#define __NR_mq_getsetattr              185
          <br>
          +#define __NR_msgget                     186
          <br>
          +#define __NR_msgctl                     187
          <br>
          +#define __NR_msgrcv                     188
          <br>
          +#define __NR_msgsnd                     189
          <br>
          +#define __NR_semget                     190
          <br>
          +#define __NR_semctl                     191
          <br>
          +#define __NR_semtimedop                 192
          <br>
          +#define __NR_semop                      193
          <br>
          +#define __NR_shmget                     194
          <br>
          +#define __NR_shmctl                     195
          <br>
          +#define __NR_shmat                      196
          <br>
          +#define __NR_shmdt                      197
          <br>
          +#define __NR_socket                     198
          <br>
          +#define __NR_socketpair                 199
          <br>
          +#define __NR_bind                       200
          <br>
          +#define __NR_listen                     201
          <br>
          +#define __NR_accept                     202
          <br>
          +#define __NR_connect                    203
          <br>
          +#define __NR_getsockname                204
          <br>
          +#define __NR_getpeername                205
          <br>
          +#define __NR_sendto                     206
          <br>
          +#define __NR_recvfrom                   207
          <br>
          +#define __NR_setsockopt                 208
          <br>
          +#define __NR_getsockopt                 209
          <br>
          +#define __NR_shutdown                   210
          <br>
          +#define __NR_sendmsg                    211
          <br>
          +#define __NR_recvmsg                    212
          <br>
          +#define __NR_readahead                  213
          <br>
          +#define __NR_brk                        214
          <br>
          +#define __NR_munmap                     215
          <br>
          +#define __NR_mremap                     216
          <br>
          +#define __NR_add_key                    217
          <br>
          +#define __NR_request_key                218
          <br>
          +#define __NR_keyctl                     219
          <br>
          +#define __NR_clone                      220
          <br>
          +#define __NR_execve                     221
          <br>
          +#define __NR3264_mmap                   222
          <br>
          +#define __NR3264_fadvise64              223
          <br>
          +#define __NR_swapon                     224
          <br>
          +#define __NR_swapoff                    225
          <br>
          +#define __NR_mprotect                   226
          <br>
          +#define __NR_msync                      227
          <br>
          +#define __NR_mlock                      228
          <br>
          +#define __NR_munlock                    229
          <br>
          +#define __NR_mlockall                   230
          <br>
          +#define __NR_munlockall                 231
          <br>
          +#define __NR_mincore                    232
          <br>
          +#define __NR_madvise                    233
          <br>
          +#define __NR_remap_file_pages           234
          <br>
          +#define __NR_mbind                      235
          <br>
          +#define __NR_get_mempolicy              236
          <br>
          +#define __NR_set_mempolicy              237
          <br>
          +#define __NR_migrate_pages              238
          <br>
          +#define __NR_move_pages                 239
          <br>
          +#define __NR_rt_tgsigqueueinfo          240
          <br>
          +#define __NR_perf_event_open            241
          <br>
          +#define __NR_accept4                    242
          <br>
          +#define __NR_recvmmsg                   243
          <br>
          +#define __NR_arch_specific_syscall      244
          <br>
          +#define __NR_wait4                      260
          <br>
          +#define __NR_prlimit64                  261
          <br>
          +#define __NR_fanotify_init              262
          <br>
          +#define __NR_fanotify_mark              263
          <br>
          +#define __NR_name_to_handle_at          264
          <br>
          +#define __NR_open_by_handle_at          265
          <br>
          +#define __NR_clock_adjtime              266
          <br>
          +#define __NR_syncfs                     267
          <br>
          +#define __NR_setns                      268
          <br>
          +#define __NR_sendmmsg                   269
          <br>
          +#define __NR_process_vm_readv           270
          <br>
          +#define __NR_process_vm_writev          271
          <br>
          +#define __NR_kcmp                       272
          <br>
          +#define __NR_finit_module               273
          <br>
          +#define __NR_sched_setattr              274
          <br>
          +#define __NR_sched_getattr              275
          <br>
          +#define __NR_renameat2                  276
          <br>
          +#define __NR_seccomp                    277
          <br>
          +#define __NR_getrandom                  278
          <br>
          +#define __NR_memfd_create               279
          <br>
          +#define __NR_bpf                        280
          <br>
          +#define __NR_execveat                   281
          <br>
          +#define __NR_userfaultfd                282
          <br>
          +#define __NR_membarrier                 283
          <br>
          +#define __NR_mlock2                     284
          <br>
          +#define __NR_copy_file_range            285
          <br>
          +#define __NR_preadv2                    286
          <br>
          +#define __NR_pwritev2                   287
          <br>
          +#define __NR_pkey_mprotect              288
          <br>
          +#define __NR_pkey_alloc                 289
          <br>
          +#define __NR_pkey_free                  290
          <br>
          +#define __NR_statx                      291
          <br>
          +#define __NR_io_pgetevents              292
          <br>
          +#define __NR_rseq                       293
          <br>
          +#define __NR_kexec_file_load            294
          <br>
          +#define __NR_pidfd_send_signal          424
          <br>
          +#define __NR_io_uring_setup             425
          <br>
          +#define __NR_io_uring_enter             426
          <br>
          +#define __NR_io_uring_register          427
          <br>
          +#define __NR_open_tree                428
          <br>
          +#define __NR_move_mount                429
          <br>
          +#define __NR_fsopen                430
          <br>
          +#define __NR_fsconfig                431
          <br>
          +#define __NR_fsmount                432
          <br>
          +#define __NR_fspick                433
          <br>
          +#define __NR_pidfd_open                434
          <br>
          +#define __NR_clone3                435
          <br>
          +#define __NR_close_range            436
          <br>
          +#define __NR_openat2                437
          <br>
          +#define __NR_pidfd_getfd            438
          <br>
          +#define __NR_faccessat2                439
          <br>
          +#define __NR_process_madvise            440
          <br>
          +#define __NR_fcntl                      __NR3264_fcntl
          <br>
          +#define __NR_statfs                     __NR3264_statfs
          <br>
          +#define __NR_fstatfs                    __NR3264_fstatfs
          <br>
          +#define __NR_truncate                   __NR3264_truncate
          <br>
          +#define __NR_ftruncate                  __NR3264_ftruncate
          <br>
          +#define __NR_lseek                      __NR3264_lseek
          <br>
          +#define __NR_sendfile                   __NR3264_sendfile
          <br>
          +#define __NR_mmap                       __NR3264_mmap
          <br>
          +#define __NR_fadvise64                  __NR3264_fadvise64
          <br>
          diff --git a/arch/loongarch64/bits/user.h
          b/arch/loongarch64/bits/user.h
          <br>
          new file mode 100644
          <br>
          index 00000000..4d4cd534
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/bits/user.h
          <br>
          @@ -0,0 +1,5 @@
          <br>
          +#define ELF_NGREG    45
          <br>
          +#define ELF_NFPREG    33
          <br>
          +
          <br>
          +typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
          <br>
          +typedef double elf_fpreg_t, elf_fpregset_t[ELF_NFPREG];
          <br>
          diff --git a/arch/loongarch64/crt_arch.h
          b/arch/loongarch64/crt_arch.h
          <br>
          new file mode 100644
          <br>
          index 00000000..c806a0bf
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/crt_arch.h
          <br>
          @@ -0,0 +1,14 @@
          <br>
          +__asm__(
          <br>
          +".text \n"
          <br>
          +".global " START "\n"
          <br>
          +".type   " START ", @function\n"
          <br>
          +START ":\n"
          <br>
          +"    add.w $fp, $r0,$r0\n"
          <br>
          +"    or $a0, $sp, $zero\n"
          <br>
          +".weak _DYNAMIC\n"
          <br>
          +".hidden _DYNAMIC\n"
          <br>
          +"    la.local $a1, _DYNAMIC\n"
          <br>
          +"    addi.w $t7, $r0, -16\n"
          <br>
          +"    and $sp, $sp, $t7\n"
          <br>
          +"    b " START "_c\n"
          <br>
          +);
          <br>
          diff --git a/arch/loongarch64/pthread_arch.h
          b/arch/loongarch64/pthread_arch.h
          <br>
          new file mode 100644
          <br>
          index 00000000..95ee4c7a
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/pthread_arch.h
          <br>
          @@ -0,0 +1,13 @@
          <br>
          +static inline uintptr_t __get_tp()
          <br>
          +{
          <br>
          +    register uintptr_t tp __asm__("tp");
          <br>
          +    __asm__ ("" : "=r" (tp) );
          <br>
          +    return tp;
          <br>
          +}
          <br>
          +
          <br>
          +#define TLS_ABOVE_TP
          <br>
          +#define GAP_ABOVE_TP 0
          <br>
          +
          <br>
          +#define DTP_OFFSET 0
          <br>
          +
          <br>
          +#define MC_PC pc
          <br>
          diff --git a/arch/loongarch64/reloc.h
          b/arch/loongarch64/reloc.h
          <br>
          new file mode 100644
          <br>
          index 00000000..2f759a34
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/reloc.h
          <br>
          @@ -0,0 +1,27 @@
          <br>
          +#ifdef __loongarch64_soft_float
          <br>
          +#define FP_SUFFIX "-sf"
          <br>
          +#else
          <br>
          +#define FP_SUFFIX ""
          <br>
          +#endif
          <br>
          +
          <br>
          +#define LDSO_ARCH "loongarch64"  FP_SUFFIX
          <br>
          +
          <br>
          +#define TPOFF_K (0x0)
          <br>
          +
          <br>
          +#define REL_PLT         R_LARCH_JUMP_SLOT
          <br>
          +#define REL_COPY        R_LARCH_COPY
          <br>
          +#define REL_DTPMOD      R_LARCH_TLS_DTPMOD64
          <br>
          +#define REL_DTPOFF      R_LARCH_TLS_DTPREL64
          <br>
          +#define REL_TPOFF       R_LARCH_TLS_TPREL64
          <br>
          +#define REL_RELATIVE    R_LARCH_RELATIVE
          <br>
          +#define REL_SYMBOLIC    R_LARCH_64
          <br>
          +
          <br>
          +#define CRTJMP(pc,sp) __asm__ __volatile__( \
          <br>
          +    "move $sp,%1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" )
          <br>
          +
          <br>
          +#define GETFUNCSYM(fp, sym, got) __asm__ ( \
          <br>
          +    ".hidden " #sym "\n" \
          <br>
          +    ".align 8 \n" \
          <br>
          +    "    la.local $t1, "#sym" \n" \
          <br>
          +    "    or %0, $t1, $zero \n" \
          <br>
          +    : "=r"(*(fp)) : : "memory" )
          <br>
          diff --git a/arch/loongarch64/syscall_arch.h
          b/arch/loongarch64/syscall_arch.h
          <br>
          new file mode 100644
          <br>
          index 00000000..ddd29578
          <br>
          --- /dev/null
          <br>
          +++ b/arch/loongarch64/syscall_arch.h
          <br>
          @@ -0,0 +1,137 @@
          <br>
          +#define __SYSCALL_LL_E(x) (x)
          <br>
          +#define __SYSCALL_LL_O(x) (x)
          <br>
          +
          <br>
          +#define SYSCALL_CLOBBERLIST \
          <br>
          +    "$t0", "$t1", "$t2", "$t3", \
          <br>
          +    "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
          <br>
          +
          <br>
          +static inline long __syscall0(long n)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0");
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "=r"(a0)
          <br>
          +        : "r"(a7)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall1(long n, long a)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +        : "r"(a7)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall2(long n, long a, long b)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +    register long a1 __asm__("$a1") = b;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +            : "r"(a7), "r"(a1)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall3(long n, long a, long b, long c)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +    register long a1 __asm__("$a1") = b;
          <br>
          +    register long a2 __asm__("$a2") = c;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +            : "r"(a7), "r"(a1), "r"(a2)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall4(long n, long a, long b, long c,
          long d)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +    register long a1 __asm__("$a1") = b;
          <br>
          +    register long a2 __asm__("$a2") = c;
          <br>
          +    register long a3 __asm__("$a3") = d;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +            : "r"(a7), "r"(a1), "r"(a2), "r"(a3)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall5(long n, long a, long b, long c,
          long d, long e)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +    register long a1 __asm__("$a1") = b;
          <br>
          +    register long a2 __asm__("$a2") = c;
          <br>
          +    register long a3 __asm__("$a3") = d;
          <br>
          +    register long a4 __asm__("$a4") = e;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +            : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall6(long n, long a, long b, long c,
          long d, long e, long f)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +    register long a1 __asm__("$a1") = b;
          <br>
          +    register long a2 __asm__("$a2") = c;
          <br>
          +    register long a3 __asm__("$a3") = d;
          <br>
          +    register long a4 __asm__("$a4") = e;
          <br>
          +    register long a5 __asm__("$a5") = f;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +            : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4),
          "r"(a5)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +static inline long __syscall7(long n, long a, long b, long c,
          long d, long e, long f, long g)
          <br>
          +{
          <br>
          +    register long a7 __asm__("$a7") = n;
          <br>
          +    register long a0 __asm__("$a0") = a;
          <br>
          +    register long a1 __asm__("$a1") = b;
          <br>
          +    register long a2 __asm__("$a2") = c;
          <br>
          +    register long a3 __asm__("$a3") = d;
          <br>
          +    register long a4 __asm__("$a4") = e;
          <br>
          +    register long a5 __asm__("$a5") = f;
          <br>
          +    register long a6 __asm__("$a6") = g;
          <br>
          +
          <br>
          +    __asm__ __volatile__ (
          <br>
          +        "syscall 0"
          <br>
          +        : "+r"(a0)
          <br>
          +            : "r"(a7), "r"(a1), "r"(a2), "r"(a3), "r"(a4),
          "r"(a5), "r"(a6)
          <br>
          +        : SYSCALL_CLOBBERLIST);
          <br>
          +    return a0;
          <br>
          +}
          <br>
          +
          <br>
          +#define VDSO_USEFUL
          <br>
          +#define VDSO_CGT_SYM "__vdso_clock_gettime"
          <br>
          +#define VDSO_CGT_VER "LINUX_2.6"
          <br>
          +
          <br>
          +#define IPC_64  0
          <br>
          diff --git a/configure b/configure
          <br>
          index 6f5453f5..aac0c467 100755
          <br>
          --- a/configure
          <br>
          +++ b/configure
          <br>
          @@ -338,6 +338,7 @@ powerpc*|ppc*) ARCH=powerpc ;;
          <br>
            riscv64*) ARCH=riscv64 ;;
          <br>
            sh[1-9bel-]*|sh|superh*) ARCH=sh ;;
          <br>
            s390x*) ARCH=s390x ;;
          <br>
          +loongarch64*) ARCH=loongarch64 ;;
          <br>
            unknown) fail "$0: unable to detect target arch; try $0
          --target=..." ;;
          <br>
            *) fail "$0: unknown or unsupported target \"$target\"" ;;
          <br>
            esac
          <br>
          diff --git a/crt/loongarch64/crti.s b/crt/loongarch64/crti.s
          <br>
          new file mode 100644
          <br>
          index 00000000..96a754d3
          <br>
          --- /dev/null
          <br>
          +++ b/crt/loongarch64/crti.s
          <br>
          @@ -0,0 +1,15 @@
          <br>
          +.section .init
          <br>
          +.global _init
          <br>
          +_init:
          <br>
          +    addi.d    $r3,$r3,-16
          <br>
          +    st.d    $fp,$r3,0
          <br>
          +    st.d    $ra,$r3,8
          <br>
          +    addi.d  $fp,$r3,16
          <br>
          +
          <br>
          +.section .fini
          <br>
          +.global _fini
          <br>
          +_fini:
          <br>
          +    addi.d    $r3,$r3,-16
          <br>
          +    st.d    $fp,$r3,0
          <br>
          +    st.d    $ra,$r3,8
          <br>
          +    addi.d  $fp,$r3,16
          <br>
          diff --git a/crt/loongarch64/crtn.s b/crt/loongarch64/crtn.s
          <br>
          new file mode 100644
          <br>
          index 00000000..bffb18f4
          <br>
          --- /dev/null
          <br>
          +++ b/crt/loongarch64/crtn.s
          <br>
          @@ -0,0 +1,12 @@
          <br>
          +.section .init
          <br>
          +    ld.d    $fp,$r3,0
          <br>
          +    ld.d    $ra,$r3,8
          <br>
          +    addi.d    $r3,$r3,16
          <br>
          +    jirl    $r0,$ra,0
          <br>
          +
          <br>
          +
          <br>
          +.section .fini
          <br>
          +    ld.d    $fp,$r3,0
          <br>
          +    ld.d    $ra,$r3,8
          <br>
          +    addi.d    $r3,$r3,16
          <br>
          +    jirl    $r0,$ra,0
          <br>
          diff --git a/include/elf.h b/include/elf.h
          <br>
          index 86e2f0bb..69b01ff4 100644
          <br>
          --- a/include/elf.h
          <br>
          +++ b/include/elf.h
          <br>
          @@ -697,6 +697,11 @@ typedef struct {
          <br>
            #define NT_MIPS_FP_MODE    0x801
          <br>
            #define NT_MIPS_MSA    0x802
          <br>
            #define NT_VERSION    1
          <br>
          +#define NT_LOONGARCH_CPUCFG    0xa00
          <br>
          +#define NT_LOONGARCH_CSR    0xa01
          <br>
          +#define NT_LOONGARCH_LSX    0xa02
          <br>
          +#define NT_LOONGARCH_LASX    0xa03
          <br>
          +#define NT_LOONGARCH_LBT    0xa04
          <br>
                @@ -3288,6 +3293,67 @@ enum
          <br>
            #define R_RISCV_SET32           56
          <br>
            #define R_RISCV_32_PCREL        57
          <br>
            +/* LoongISA ELF Flags */
          <br>
          +#define EM_LOONGARCH  258
          <br>
          +
          <br>
          +#define EF_LARCH_ABI             0x0003
          <br>
          +#define EF_LARCH_ABI_LP64        0x0003
          <br>
          +#define EF_LARCH_ABI_LP32        0x0001
          <br>
          +
          <br>
          +/* Loongarch specific dynamic relocations. */
          <br>
          +#define R_LARCH_NONE                        0
          <br>
          +#define R_LARCH_32                          1
          <br>
          +#define R_LARCH_64                          2
          <br>
          +#define R_LARCH_RELATIVE                    3
          <br>
          +#define R_LARCH_COPY                        4
          <br>
          +#define R_LARCH_JUMP_SLOT                   5
          <br>
          +#define R_LARCH_TLS_DTPMOD32                6
          <br>
          +#define R_LARCH_TLS_DTPMOD64                7
          <br>
          +#define R_LARCH_TLS_DTPREL32                8
          <br>
          +#define R_LARCH_TLS_DTPREL64                9
          <br>
          +#define R_LARCH_TLS_TPREL32                 10
          <br>
          +#define R_LARCH_TLS_TPREL64                 11
          <br>
          +#define R_LARCH_IRELATIVE                   12
          <br>
          +#define R_LARCH_MARK_LA                     20
          <br>
          +#define R_LARCH_MARK_PCREL                  21
          <br>
          +#define R_LARCH_SOP_PUSH_PCREL              22
          <br>
          +#define R_LARCH_SOP_PUSH_ABSOLUTE           23
          <br>
          +#define R_LARCH_SOP_PUSH_DUP                24
          <br>
          +#define R_LARCH_SOP_PUSH_GPREL              25
          <br>
          +#define R_LARCH_SOP_PUSH_TLS_TPREL          26
          <br>
          +#define R_LARCH_SOP_PUSH_TLS_GOT            27
          <br>
          +#define R_LARCH_SOP_PUSH_TLS_GD             28
          <br>
          +#define R_LARCH_SOP_PUSH_PLT_PCREL          29
          <br>
          +#define R_LARCH_SOP_ASSERT                  30
          <br>
          +#define R_LARCH_SOP_NOT                     31
          <br>
          +#define R_LARCH_SOP_SUB                     32
          <br>
          +#define R_LARCH_SOP_SL                      33
          <br>
          +#define R_LARCH_SOP_SR                      34
          <br>
          +#define R_LARCH_SOP_ADD                     35
          <br>
          +#define R_LARCH_SOP_AND                     36
          <br>
          +#define R_LARCH_SOP_IF_ELSE                 37
          <br>
          +#define R_LARCH_SOP_POP_32_S_10_5           38
          <br>
          +#define R_LARCH_SOP_POP_32_U_10_12          39
          <br>
          +#define R_LARCH_SOP_POP_32_S_10_12          40
          <br>
          +#define R_LARCH_SOP_POP_32_S_10_16          41
          <br>
          +#define R_LARCH_SOP_POP_32_S_10_16_S2       42
          <br>
          +#define R_LARCH_SOP_POP_32_S_5_20           43
          <br>
          +#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2   44
          <br>
          +#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2  45
          <br>
          +#define R_LARCH_SOP_POP_32_U                46
          <br>
          +#define R_LARCH_ADD8                        47
          <br>
          +#define R_LARCH_ADD16                       48
          <br>
          +#define R_LARCH_ADD24                       49
          <br>
          +#define R_LARCH_ADD32                       50
          <br>
          +#define R_LARCH_ADD64                       51
          <br>
          +#define R_LARCH_SUB8                        52
          <br>
          +#define R_LARCH_SUB16                       53
          <br>
          +#define R_LARCH_SUB24                       54
          <br>
          +#define R_LARCH_SUB32                       55
          <br>
          +#define R_LARCH_SUB64                       56
          <br>
          +#define R_LARCH_GNU_VTINHERIT               57
          <br>
          +#define R_LARCH_GNU_VTENTRY                 58
          <br>
          +
          <br>
            #ifdef __cplusplus
          <br>
            }
          <br>
            #endif
          <br>
          diff --git a/src/fenv/loongarch64/fenv.S
          b/src/fenv/loongarch64/fenv.S
          <br>
          new file mode 100644
          <br>
          index 00000000..049234be
          <br>
          --- /dev/null
          <br>
          +++ b/src/fenv/loongarch64/fenv.S
          <br>
          @@ -0,0 +1,72 @@
          <br>
          +#ifndef __loongarch_soft_float
          <br>
          +
          <br>
          +.global    feclearexcept
          <br>
          +.type    feclearexcept,@function
          <br>
          +feclearexcept:
          <br>
          +    li.w    $a1, 0x1f0000  //flags in 16-20 bit of fcsr0.
          <br>
          +    and     $a0, $a0, $a1
          <br>
          +    movfcsr2gr $a1, $r0
          <br>
          +    or    $a1, $a1, $a0
          <br>
          +    xor    $a1, $a1, $a0
          <br>
          +    movgr2fcsr $r0, $a1
          <br>
          +    li.w    $v0, 0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +.global    feraiseexcept
          <br>
          +.type    feraiseexcept,@function
          <br>
          +feraiseexcept:
          <br>
          +    li.w    $a1, 0x1f0000
          <br>
          +    and     $a0, $a0, $a1
          <br>
          +    movfcsr2gr $a1, $r0
          <br>
          +    or    $a1, $a1, $a0
          <br>
          +    movgr2fcsr $r0, $a1
          <br>
          +        li.w    $v0, 0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +.global    fetestexcept
          <br>
          +.type    fetestexcept,@function
          <br>
          +fetestexcept:
          <br>
          +        li.w    $a1, 0x1f0000
          <br>
          +        and     $a0, $a0, $a1
          <br>
          +    movfcsr2gr $a1, $r0
          <br>
          +        and     $v0, $a1, $a0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +.global    fegetround
          <br>
          +.type    fegetround,@function
          <br>
          +fegetround:
          <br>
          +    movfcsr2gr $v0, $r0
          <br>
          +        andi    $v0, $v0, 0x300  //fcsr0.RM
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +.global    __fesetround
          <br>
          +.hidden __fesetround
          <br>
          +.type    __fesetround,@function
          <br>
          +__fesetround:
          <br>
          +    movfcsr2gr $a1, $r0
          <br>
          +    li.w    $a2, -769  //0xfffffcff
          <br>
          +    and    $a1, $a1, $a2
          <br>
          +    or    $a1, $a1, $a0
          <br>
          +    movgr2fcsr $r0, $a1
          <br>
          +        li.w    $v0, 0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +.global    fegetenv
          <br>
          +.type    fegetenv,@function
          <br>
          +fegetenv:
          <br>
          +    movfcsr2gr $a1, $r0
          <br>
          +    st.w    $a1, $a0, 0
          <br>
          +        li.w    $v0, 0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +.global    fesetenv
          <br>
          +.type    fesetenv,@function
          <br>
          +fesetenv:
          <br>
          +    addi.d    $a1, $a0, 1
          <br>
          +    beq    $a1, $r0, 1f
          <br>
          +    ld.w    $a1, $a0, 0
          <br>
          +1:    movgr2fcsr $r0, $a1
          <br>
          +        li.w    $v0, 0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +
          <br>
          +#endif
          <br>
          diff --git a/src/ldso/loongarch64/dlsym.s
          b/src/ldso/loongarch64/dlsym.s
          <br>
          new file mode 100644
          <br>
          index 00000000..5f51ed85
          <br>
          --- /dev/null
          <br>
          +++ b/src/ldso/loongarch64/dlsym.s
          <br>
          @@ -0,0 +1,7 @@
          <br>
          +.global dlsym
          <br>
          +.hidden __dlsym
          <br>
          +.type   dlsym,@function
          <br>
          +dlsym:
          <br>
          +    move    $a2, $ra
          <br>
          +    la.global    $r16, __dlsym
          <br>
          +    jirl    $r0, $r16, 0
          <br>
          diff --git a/src/setjmp/loongarch64/longjmp.S
          b/src/setjmp/loongarch64/longjmp.S
          <br>
          new file mode 100644
          <br>
          index 00000000..41d897ed
          <br>
          --- /dev/null
          <br>
          +++ b/src/setjmp/loongarch64/longjmp.S
          <br>
          @@ -0,0 +1,37 @@
          <br>
          +.global    _longjmp
          <br>
          +.global    longjmp
          <br>
          +.type    _longjmp,@function
          <br>
          +.type    longjmp,@function
          <br>
          +_longjmp:
          <br>
          +longjmp:
          <br>
          +    add.d   $t5, $a0, $zero
          <br>
          +    add.d   $v0, $a1, $zero
          <br>
          +
          <br>
          +    bne     $v0, $zero, 1f
          <br>
          +    addi.d  $v0, $v0, 1
          <br>
          +
          <br>
          +1:
          <br>
          +    ld.d    $ra, $t5, 0
          <br>
          +    ld.d    $sp, $t5, 8
          <br>
          +    ld.d    $r21,$t5, 16
          <br>
          +    ld.d    $fp, $t5, 24
          <br>
          +    ld.d    $s0, $t5, 32
          <br>
          +    ld.d    $s1, $t5, 40
          <br>
          +    ld.d    $s2, $t5, 48
          <br>
          +    ld.d    $s3, $t5, 56
          <br>
          +    ld.d    $s4, $t5, 64
          <br>
          +    ld.d    $s5, $t5, 72
          <br>
          +    ld.d    $s6, $t5, 80
          <br>
          +    ld.d    $s7, $t5, 88
          <br>
          +    ld.d    $s8, $t5, 96
          <br>
          +#ifndef __loongarch64_soft_float
          <br>
          +    fld.d   $fs0, $t5, 104
          <br>
          +    fld.d   $fs1, $t5, 112
          <br>
          +    fld.d   $fs2, $t5, 120
          <br>
          +    fld.d   $fs3, $t5, 128
          <br>
          +    fld.d   $fs4, $t5, 136
          <br>
          +    fld.d   $fs5, $t5, 144
          <br>
          +    fld.d   $fs6, $t5, 152
          <br>
          +    fld.d   $fs7, $t5, 160
          <br>
          +#endif
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          diff --git a/src/setjmp/loongarch64/setjmp.S
          b/src/setjmp/loongarch64/setjmp.S
          <br>
          new file mode 100644
          <br>
          index 00000000..8dca3cb8
          <br>
          --- /dev/null
          <br>
          +++ b/src/setjmp/loongarch64/setjmp.S
          <br>
          @@ -0,0 +1,34 @@
          <br>
          +.global    __setjmp
          <br>
          +.global    _setjmp
          <br>
          +.global    setjmp
          <br>
          +.type    __setjmp,@function
          <br>
          +.type    _setjmp,@function
          <br>
          +.type    setjmp,@function
          <br>
          +__setjmp:
          <br>
          +_setjmp:
          <br>
          +setjmp:
          <br>
          +    st.d    $ra, $a0, 0
          <br>
          +    st.d    $sp, $a0, 8
          <br>
          +    st.d    $r21,$a0, 16
          <br>
          +    st.d    $fp, $a0, 24
          <br>
          +    st.d    $s0, $a0, 32
          <br>
          +    st.d    $s1, $a0, 40
          <br>
          +    st.d    $s2, $a0, 48
          <br>
          +    st.d    $s3, $a0, 56
          <br>
          +    st.d    $s4, $a0, 64
          <br>
          +    st.d    $s5, $a0, 72
          <br>
          +    st.d    $s6, $a0, 80
          <br>
          +    st.d    $s7, $a0, 88
          <br>
          +    st.d    $s8, $a0, 96
          <br>
          +#ifndef __loongarch64_soft_float
          <br>
          +    fst.d   $fs0, $a0, 104
          <br>
          +    fst.d   $fs1, $a0, 112
          <br>
          +    fst.d   $fs2, $a0, 120
          <br>
          +    fst.d   $fs3, $a0, 128
          <br>
          +    fst.d   $fs4, $a0, 136
          <br>
          +    fst.d   $fs5, $a0, 144
          <br>
          +    fst.d   $fs6, $a0, 152
          <br>
          +    fst.d   $fs7, $a0, 160
          <br>
          +#endif
          <br>
          +    xor     $v0, $v0, $v0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          diff --git a/src/signal/loongarch64/restore.s
          b/src/signal/loongarch64/restore.s
          <br>
          new file mode 100644
          <br>
          index 00000000..9bf015a0
          <br>
          --- /dev/null
          <br>
          +++ b/src/signal/loongarch64/restore.s
          <br>
          @@ -0,0 +1,10 @@
          <br>
          +.global    __restore_rt
          <br>
          +.global    __restore
          <br>
          +.hidden __restore_rt
          <br>
          +.hidden __restore
          <br>
          +.type    __restore_rt,@function
          <br>
          +.type    __restore,@function
          <br>
          +__restore_rt:
          <br>
          +__restore:
          <br>
          +    ori    $a7, $zero, 139
          <br>
          +    syscall    0
          <br>
          diff --git a/src/signal/loongarch64/sigsetjmp.s
          b/src/signal/loongarch64/sigsetjmp.s
          <br>
          new file mode 100644
          <br>
          index 00000000..d53f334a
          <br>
          --- /dev/null
          <br>
          +++ b/src/signal/loongarch64/sigsetjmp.s
          <br>
          @@ -0,0 +1,29 @@
          <br>
          +.global sigsetjmp
          <br>
          +.global __sigsetjmp
          <br>
          +.type   sigsetjmp,@function
          <br>
          +.type   __sigsetjmp,@function
          <br>
          +sigsetjmp:
          <br>
          +__sigsetjmp:
          <br>
          +        or $t5, $a0, $zero
          <br>
          +        or $t6, $a1, $zero
          <br>
          +
          <br>
          +        # comparing save mask with 0, if equals to 0 then
          <br>
          +        # sigsetjmp is equal to setjmp.
          <br>
          +        beq     $t6, $zero, 1f
          <br>
          +        st.d    $ra, $t5, 168
          <br>
          +
          <br>
          +        # save base of got so that we can use it later
          <br>
          +        # once we return from 'longjmp'
          <br>
          +        la.global  $t8, setjmp
          <br>
          +        jirl    $ra, $t8, 0
          <br>
          +
          <br>
          +        or      $v1, $v0, $zero # Return from 'setjmp' or
          'longjmp'
          <br>
          +        ld.d    $ra, $t5, 168   # Restore ra of sigsetjmp
          <br>
          +        or      $a0, $t5, $zero
          <br>
          +
          <br>
          +.hidden __sigsetjmp_tail
          <br>
          +        la.global  $t8, __sigsetjmp_tail
          <br>
          +        jirl       $zero, $t8, 0
          <br>
          +1:
          <br>
          +        la.global  $t8, setjmp
          <br>
          +        jirl       $zero, $t8, 0
          <br>
          diff --git a/src/thread/loongarch64/__set_thread_area.s
          b/src/thread/loongarch64/__set_thread_area.s
          <br>
          new file mode 100644
          <br>
          index 00000000..421cd381
          <br>
          --- /dev/null
          <br>
          +++ b/src/thread/loongarch64/__set_thread_area.s
          <br>
          @@ -0,0 +1,7 @@
          <br>
          +.global    __set_thread_area
          <br>
          +.hidden __set_thread_area
          <br>
          +.type    __set_thread_area,@function
          <br>
          +__set_thread_area:
          <br>
          +    or    $tp, $a0, $zero
          <br>
          +    ori    $a0, $zero, 0
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          diff --git a/src/thread/loongarch64/__unmapself.s
          b/src/thread/loongarch64/__unmapself.s
          <br>
          new file mode 100644
          <br>
          index 00000000..b77e6d1d
          <br>
          --- /dev/null
          <br>
          +++ b/src/thread/loongarch64/__unmapself.s
          <br>
          @@ -0,0 +1,7 @@
          <br>
          +.global    __unmapself
          <br>
          +.type    __unmapself, @function
          <br>
          +__unmapself:
          <br>
          +    li.d    $a7, 215
          <br>
          +    syscall    0                # call munmap
          <br>
          +    li.d    $a7, 93
          <br>
          +    syscall    0                # call exit
          <br>
          diff --git a/src/thread/loongarch64/clone.s
          b/src/thread/loongarch64/clone.s
          <br>
          new file mode 100644
          <br>
          index 00000000..ec920c7b
          <br>
          --- /dev/null
          <br>
          +++ b/src/thread/loongarch64/clone.s
          <br>
          @@ -0,0 +1,47 @@
          <br>
          +#__clone(func, stack, flags, arg, ptid, tls, ctid)
          <br>
          +#         a0,    a1,   a2,    a3,  a4,  a5,   a6
          <br>
          +# sys_clone3(struct clone_args *cl_args, size_t size)
          <br>
          +#                                 a0             a1
          <br>
          +
          <br>
          +.global    __clone
          <br>
          +.hidden __clone
          <br>
          +.type    __clone,@function
          <br>
          +__clone:
          <br>
          +    # Save function pointer and argument pointer on new
          thread stack
          <br>
          +    addi.d    $a1, $a1, -16
          <br>
          +    st.d    $a0, $a1, 0    # save function pointer
          <br>
          +    st.d    $a3, $a1, 8    # save argument pointer
          <br>
          +
          <br>
          +    li.d    $t0, ~0x004000ff  # mask CSIGNAL and
          CLONE_DETACHED
          <br>
          +    and    $t1, $a2, $t0     # cl_args.flags
          <br>
          +    li.d    $t0, 0x000000ff   # CSIGNAL
          <br>
          +    and    $t2, $a2, $t0     # cl_args.exit_signal
          <br>
          +
          <br>
          +    bstrins.d $sp, $zero, 2, 0  # align stack to 8 bytes
          <br>
          +    addi.d    $sp, $sp, -88   # struct clone_args
          <br>
          +    st.d    $t1, $sp, 0     # flags
          <br>
          +    st.d    $a4, $sp, 8     # pidfd
          <br>
          +    st.d    $a6, $sp, 16    # child_tid
          <br>
          +    st.d    $a4, $sp, 24    # parent_tid
          <br>
          +    st.d    $t2, $sp, 32    # exit_signal
          <br>
          +    st.d    $a1, $sp, 40    # stack
          <br>
          +    st.d    $zero, $sp, 48  # stack_size
          <br>
          +    st.d    $a5, $sp, 56    # tls
          <br>
          +    st.d    $zero, $sp, 64  # set_tid
          <br>
          +    st.d    $zero, $sp, 72  # set_tid_size
          <br>
          +    st.d    $zero, $sp, 80  # cgroup
          <br>
          +
          <br>
          +    move    $a0, $sp
          <br>
          +    li.d    $a1, 88
          <br>
          +    li.d    $a7, 435    # __NR_clone3
          <br>
          +    syscall 0        # call clone3
          <br>
          +
          <br>
          +    beqz    $a0, 1f        # whether child process
          <br>
          +    addi.d    $sp, $sp, 88
          <br>
          +    jirl    $zero, $ra, 0    # parent process return
          <br>
          +1:
          <br>
          +    ld.d    $t8, $sp, 0     # function pointer
          <br>
          +    ld.d    $a0, $sp, 8     # argument pointer
          <br>
          +    jirl    $ra, $t8, 0     # call the user's function
          <br>
          +    li.d    $a7, 93
          <br>
          +    syscall    0        # child process exit
          <br>
          diff --git a/src/thread/loongarch64/syscall_cp.s
          b/src/thread/loongarch64/syscall_cp.s
          <br>
          new file mode 100644
          <br>
          index 00000000..3903ed2c
          <br>
          --- /dev/null
          <br>
          +++ b/src/thread/loongarch64/syscall_cp.s
          <br>
          @@ -0,0 +1,29 @@
          <br>
          +.global    __cp_begin
          <br>
          +.hidden    __cp_begin
          <br>
          +.global    __cp_end
          <br>
          +.hidden    __cp_end
          <br>
          +.global    __cp_cancel
          <br>
          +.hidden    __cp_cancel
          <br>
          +.hidden    __cancel
          <br>
          +.global    __syscall_cp_asm
          <br>
          +.hidden    __syscall_cp_asm
          <br>
          +.type    __syscall_cp_asm,@function
          <br>
          +
          <br>
          +__syscall_cp_asm:
          <br>
          +__cp_begin:
          <br>
          +    ld.w    $a0, $a0, 0
          <br>
          +    bnez    $a0, __cp_cancel
          <br>
          +    or    $t8, $a1, $zero     # reserve system call number
          <br>
          +    or    $a0, $a2, $zero
          <br>
          +    or    $a1, $a3, $zero
          <br>
          +    or    $a2, $a4, $zero
          <br>
          +    or    $a3, $a5, $zero
          <br>
          +    or    $a4, $a6, $zero
          <br>
          +    or    $a5, $a7, $zero
          <br>
          +    or    $a7, $t8, $zero
          <br>
          +    syscall    0
          <br>
          +__cp_end:
          <br>
          +    jirl    $zero, $ra, 0
          <br>
          +__cp_cancel:
          <br>
          +    la.local $t8, __cancel
          <br>
          +    jirl    $zero, $t8, 0
          <br>
          -- <br>
          2.34.1
          <br>
          <br>
        </blockquote>
      </blockquote>
    </blockquote>
  </body>
</html>

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