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Date: Sat, 16 Jul 2022 16:13:31 +0800
From: 王洪亮 <wanghongliang@...ngson.cn>
To: musl@...ts.openwall.com
Subject: Re: Re: add loongarch64 port v4
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@...ngson.cn>
>>> Date: Wed, 8 Jun 2022 01:42:12 +0800
>>> Subject: [PATCH] add loongarch64 port v4.
>>>
>>> Author: xiaojuanZhai <zhaixiaojuan@...ngson.cn>
>>> Author: meidanLi <limeidan@...ngson.cn>
>>> Author: guoqiChen <chenguoqi@...ngson.cn>
>>> Author: xiaolinZhao <zhaoxiaolin@...ngson.cn>
>>> Author: Fanpeng <fanpeng@...ngson.cn>
>>> Author: jiantaoShan <shanjiantao@...ngson.cn>
>>> Author: xuhuiQiang <qiangxuhui@...ngson.cn>
>>> Author: jingyunHua <huajingyun@...ngson.cn>
>>> Author: liuxue <liuxue@...ngson.cn>
>>> Author: wanghongliang <wanghongliang@...ngson.cn
>>>
>>> Signed-off-by: wanghongliang <wanghongliang@...ngson.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
>>>
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