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Add support for LoongArch.

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Only 64-bit is supported at the moment.

Signed-off-by: Jingyun Hua <huajingyun@loongson.cn>
This commit is contained in:
Jingyun Hua 2022-02-08 20:47:10 +08:00
parent e80652b627
commit fe85bbdf4c
7 changed files with 208 additions and 8 deletions
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1
m4/pc_from_ucontext.m4
View File

@ -26,6 +26,7 @@ AC_DEFUN([AC_PC_FROM_UCONTEXT],
pc_fields="$pc_fields uc_mcontext.gregs[[REG_EIP]]" # Linux (i386)
pc_fields="$pc_fields uc_mcontext.gregs[[REG_RIP]]" # Linux (x86_64)
pc_fields="$pc_fields uc_mcontext.sc_ip" # Linux (ia64)
pc_fields="$pc_fields uc_mcontext.__pc" # Linux (loongarch64)
pc_fields="$pc_fields uc_mcontext.pc" # Linux (mips)
pc_fields="$pc_fields uc_mcontext.uc_regs->gregs[[PT_NIP]]" # Linux (ppc)
pc_fields="$pc_fields uc_mcontext.__gregs[[REG_PC]]" # Linux (riscv64)

2
src/base/basictypes.h
View File

@ -387,6 +387,8 @@ class AssignAttributeStartEnd {
# define CACHELINE_ALIGNED __attribute__((aligned(64)))
# elif (defined(__e2k__))
# define CACHELINE_ALIGNED __attribute__((aligned(64)))
# elif defined(__loongarch64)
# define CACHELINE_ALIGNED __attribute__((aligned(64)))
# else
# error Could not determine cache line length - unknown architecture
# endif

206
src/base/linux_syscall_support.h
View File

@ -131,12 +131,12 @@
#define SYS_LINUX_SYSCALL_SUPPORT_H
/* We currently only support x86-32, x86-64, ARM, MIPS, PPC/PPC64, Aarch64,
* s390, s390x, and riscv64 on Linux.
* s390, s390x, riscv64, and loongarch64 on Linux.
* Porting to other related platforms should not be difficult.
*/
#if (defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
defined(__mips__) || defined(__mips64) || defined(__mips64el__) || defined(__PPC__) || \
defined(__aarch64__) || defined(__s390__) || defined(__riscv)) \
defined(__aarch64__) || defined(__s390__) || defined(__riscv)) || defined(__loongarch64) \
&& (defined(__linux))
#ifndef SYS_CPLUSPLUS
@ -541,6 +541,31 @@ struct kernel_stat {
unsigned long __unused4;
unsigned long __unused5;
};
/*From linux/include/uapi/asm-generic/stat.h */
#elif defined(__loongarch64)
struct kernel_stat {
unsigned long st_dev;
unsigned long st_ino;
unsigned int st_mode;
unsigned int st_nlink;
unsigned int st_uid;
unsigned int st_gid;
unsigned long st_rdev;
unsigned long __pad1;
long st_size;
int st_blksize;
int __pad2;
long st_blocks;
long st_atime_;
unsigned long st_atime_nsec_;
long st_mtime_;
unsigned long st_mtime_nsec_;
long st_ctime_;
unsigned long st_ctime_nsec_;
unsigned int __unused4;
unsigned int __unused5;
};
#endif
@ -954,8 +979,24 @@ struct kernel_stat {
# ifndef __NR_fstatat
# define __NR_fstatat 79
# endif
#endif
#elif defined(__loongarch64)
#ifndef __NR_gettid
#define __NR_gettid 178
#endif
#ifndef __NR_futex
#define __NR_futex 98
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif
#ifndef __NR_fstatat
#define __NR_fstatat 79
#endif
#ifndef __NR_getdents64
#define __NR_getdents64 61
#endif /* End of loongarch64 defininitions */
#endif
/* After forking, we must make sure to only call system calls. */
#if __BOUNDED_POINTERS__
@ -1017,7 +1058,8 @@ struct kernel_stat {
#undef LSS_RETURN
#if (defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
defined(__aarch64__) || defined(__s390__) || defined(__riscv))
defined(__aarch64__) || defined(__s390__) || defined(__riscv)) || \
defined(__loongarch64)
/* Failing system calls return a negative result in the range of
* -1..-4095. These are "errno" values with the sign inverted.
*/
@ -2564,6 +2606,159 @@ struct kernel_stat {
LSS_BODY(type, name, "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), \
"r"(__a5)); \
}
#elif defined(__loongarch64)
#undef LSS_REG
#define LSS_REG(r,a) register long __a##r __asm__("$a"#r) = (long)a
#define LOONGARCH__SYSCALL_CLOBBERS \
"$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", \
"memory"
#undef LSS_BODY
#define LSS_BODY(type,name,args...) \
register long __a7 __asm__("$a7") = __NR_##name; \
long __res; \
__asm__ __volatile__ ( \
"syscall 0\n\t" \
: "+r" (__a0) \
: "r" (__a7), ##args \
: LOONGARCH__SYSCALL_CLOBBERS); \
__res = __a0; \
LSS_RETURN(type, __res)
#undef _syscall0
#define _syscall0(type,name) \
type LSS_NAME(name)(void) { \
register long __a7 __asm__("$a7") = __NR_##name; \
register long __a0 __asm__("$a0"); \
long __res; \
__asm__ __volatile__ ( \
"syscall 0\n\t" \
: "=r" (__a0) \
: "r" (__a7) \
: LOONGARCH__SYSCALL_CLOBBERS); \
__res = __a0; \
LSS_RETURN(type, __res); \
}
#undef _syscall1
#define _syscall1(type,name,type1,arg1) \
type LSS_NAME(name)(type1 arg1) { \
LSS_REG(0, arg1); \
LSS_BODY(type,name); \
}
#undef _syscall2
#define _syscall2(type,name,type1,arg1,type2,arg2) \
type LSS_NAME(name)(type1 arg1, type2 arg2) { \
LSS_REG(0,arg1); \
LSS_REG(1,arg2); \
LSS_BODY(type, name,"r"(__a1)); \
}
#undef _syscall3
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3) { \
LSS_REG(0,arg1); \
LSS_REG(1,arg2); \
LSS_REG(2,arg3); \
LSS_BODY(type, name,"r"(__a1), "r"(__a2)); \
}
#undef _syscall4
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3, \
type4,arg4) \
type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3,type4 arg4) { \
LSS_REG(0,arg1); \
LSS_REG(1,arg2); \
LSS_REG(2,arg3); \
LSS_REG(3,arg4); \
LSS_BODY(type,name, "r"(__a1), "r"(__a2), "r"(__a3)); \
}
#undef _syscall5
#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3, \
type4,arg4,type5,arg5) \
type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3,type4 arg4, \
type5 arg5) { \
LSS_REG(0,arg1); \
LSS_REG(1,arg2); \
LSS_REG(2,arg3); \
LSS_REG(3,arg4); \
LSS_REG(4,arg5); \
LSS_BODY(type,name,"r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4)); \
}
#undef _syscall6
#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3, \
type4,arg4,type5,arg5,type6,arg6) \
type LSS_NAME(name)(type1 arg1,type2 arg2,type3 arg3,type4 arg4, \
type5 arg5,type6 arg6) { \
LSS_REG(0,arg1); \
LSS_REG(1,arg2); \
LSS_REG(2,arg3); \
LSS_REG(3,arg4); \
LSS_REG(4,arg5); \
LSS_REG(5,arg6); \
LSS_BODY(type,name,"r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), \
"r"(__a5)); \
}
LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *arg), void *child_stack,
int flags, void *arg, int *parent_tidptr,
void *newtls, int *child_tidptr) {
long __res;
{
register int (*__fn)(void *) __asm__("$a0") = fn;
register void *__stack __asm__("$a1") = child_stack;
register int __flags __asm__("$a2") = flags;
register void *__arg __asm__("$a3") = arg;
register int *__ptid __asm__("$a4") = parent_tidptr;
register void *__tls __asm__("$a5") = newtls;
register int *__ctid __asm__("$a6") = child_tidptr;
__asm__ __volatile__(
/* Align stack to 16 or 8 bytes per the ABI. */
"bstrins.d $a1,$zero, 3, 0\n"
/*Sanity check arguments */
"beqz $a0, 1f\n" /* No NULL function pointers. */
"beqz $a1, 1f\n" /* No NULL stack pointers. */
/*Save argument pointer */
"addi.d $a1, $a1, -16\n" /* Reserve argument save space. */
"st.d $a0, $a1, 0\n" /* Save function pointer. */
"st.d $a3, $a1, 8\n" /* Save argument pointer. */
/* The syscall expects the args to be in different slots. */
"or $a0, $a2, $zero\n"
"or $a2, $a4, $zero\n"
"or $a3, $a6, $zero\n"
"or $a4, $a5, $zero\n"
/* Do the system call */
"li.d $a7, %9\n"
"syscall 0\n"
"bnez $a5, 2f\n"
"bnez $a7, 2f\n"
"ld.d $a1, $sp, 0\n" /* Function pointer. */
"ld.d $a0, $sp, 8\n" /* Argument pointer. */
/* Call the user's function. */
"jirl $ra, $a1, 0\n"
/* Call exit with the function's return value. */
"li.d $a0, %10\n"
"syscall 0\n"
"1:\n"
"li.d $t0, %1\n"
"or $a0, $t0, $zero\n"
"2:\n"
: "=r" (__res)
: "i"(-EINVAL),
"r"(__fn), "r"(__stack), "r"(__flags), "r"(__arg),
"r"(__ptid), "r"(__tls), "r"(__ctid),
"i"(__NR_clone), "i"(__NR_exit)
: "memory");
}
LSS_RETURN(int, __res);
}
#endif
#define __NR__exit __NR_exit
#define __NR__gettid __NR_gettid
@ -2657,7 +2852,7 @@ struct kernel_stat {
LSS_INLINE _syscall3(long, getcpu, unsigned *, cpu,
unsigned *, node, void *, unused);
#endif
#if defined(__x86_64__) || defined(__aarch64__) || \
#if defined(__x86_64__) || defined(__aarch64__) || defined(__loongarch64) || \
(defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32)
LSS_INLINE _syscall3(int, socket, int, d,
int, t, int, p)
@ -2691,6 +2886,7 @@ struct kernel_stat {
}
#endif
#if (defined(__aarch64__)) || \
(defined(__loongarch64)) || \
(defined(__mips__) \
&& (_MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32))
LSS_INLINE int LSS_NAME(sigaction)(int signum,

2
src/base/linuxthreads.h
View File

@ -42,7 +42,7 @@
* related platforms should not be difficult.
*/
#if (defined(__i386__) || defined(__x86_64__) || defined(__arm__) || \
defined(__mips__) || defined(__PPC__) || defined(__aarch64__) || \
defined(__mips__) || defined(__PPC__) || defined(__aarch64__) || defined(__loongarch64) || \
defined(__s390__)) && defined(__linux)
/* Define the THREADS symbol to make sure that there is exactly one core dumper

1
src/malloc_hook_mmap_linux.h
View File

@ -54,6 +54,7 @@
#if defined(__x86_64__) \
|| defined(__PPC64__) \
|| defined(__aarch64__) \
|| defined(__loongarch64) \
|| (defined(_MIPS_SIM) && (_MIPS_SIM == _ABI64 || _MIPS_SIM == _ABIN32)) \
|| defined(__s390__) || (defined(__riscv) && __riscv_xlen == 64) \
|| defined(__e2k__)

2
src/stacktrace.cc
View File

@ -219,7 +219,7 @@ static GetStackImplementation *all_impls[] = {
// ppc and i386 implementations prefer arch-specific asm implementations.
// arm's asm implementation is broken
#if defined(__i386__) || defined(__ppc__) || defined(__PPC__)
#if defined(__i386__) || defined(__ppc__) || defined(__PPC__) || defined(__loongarch64)
#if !defined(NO_FRAME_POINTER)
#define TCMALLOC_DONT_PREFER_LIBUNWIND
#endif

2
src/tcmalloc.cc
View File

@ -178,7 +178,7 @@ DECLARE_int64(tcmalloc_heap_limit_mb);
// jump. I am not able to reproduce that anymore.
#if !defined(__i386__) && !defined(__x86_64__) && \
!defined(__ppc__) && !defined(__PPC__) && \
!defined(__aarch64__) && !defined(__mips__) && !defined(__arm__)
!defined(__aarch64__) && !defined(__mips__) && !defined(__arm__) && !defined(__loongarch64)
#undef TCMALLOC_NO_ALIASES
#define TCMALLOC_NO_ALIASES
#endif