diff options
Diffstat (limited to 'libc/sysdeps')
| -rw-r--r-- | libc/sysdeps/linux/arm/bits/syscalls.h | 32 | ||||
| -rw-r--r-- | libc/sysdeps/linux/arm/syscall.c | 2 |
2 files changed, 25 insertions, 9 deletions
diff --git a/libc/sysdeps/linux/arm/bits/syscalls.h b/libc/sysdeps/linux/arm/bits/syscalls.h index 937f13a0d..245266730 100644 --- a/libc/sysdeps/linux/arm/bits/syscalls.h +++ b/libc/sysdeps/linux/arm/bits/syscalls.h @@ -18,7 +18,7 @@ /* Some of the sneaky macros in the code were taken from - glibc-2.2.5/sysdeps/unix/sysv/linux/arm/sysdep.h + glibc-2.3.2/sysdeps/unix/sysv/linux/arm/sysdep.h */ #ifndef __ASSEMBLER__ @@ -84,7 +84,20 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7) #undef INLINE_SYSCALL -#define INLINE_SYSCALL(name, nr, args...) \ +#define INLINE_SYSCALL(name, nr, args...) \ + ({ unsigned int _sys_result = INTERNAL_SYSCALL (name, , nr, args); \ + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_sys_result, ), 0)) \ + { \ + __set_errno (INTERNAL_SYSCALL_ERRNO (_sys_result, )); \ + _sys_result = (unsigned int) -1; \ + } \ + (int) _sys_result; }) + +#undef INTERNAL_SYSCALL_DECL +#define INTERNAL_SYSCALL_DECL(err) do { } while (0) + +#undef INTERNAL_SYSCALL +#define INTERNAL_SYSCALL(name, err, nr, args...) \ ({ unsigned int _sys_result; \ { \ register int _a1 asm ("a1"); \ @@ -92,16 +105,18 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7) asm volatile ("swi %1 @ syscall " #name \ : "=r" (_a1) \ : "i" (SYS_ify(name)) ASM_ARGS_##nr \ - : "a1", "memory"); \ + : "memory"); \ _sys_result = _a1; \ } \ - if (_sys_result >= (unsigned int) -4095) \ - { \ - __set_errno (-_sys_result); \ - _sys_result = (unsigned int) -1; \ - } \ (int) _sys_result; }) +#undef INTERNAL_SYSCALL_ERROR_P +#define INTERNAL_SYSCALL_ERROR_P(val, err) \ + ((unsigned int) (val) >= 0xfffff001u) + +#undef INTERNAL_SYSCALL_ERRNO +#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) + #define LOAD_ARGS_0() #define ASM_ARGS_0 #define LOAD_ARGS_1(a1) \ @@ -133,5 +148,6 @@ return (type) (INLINE_SYSCALL(name, 7, arg1, arg2, arg3, arg4, arg5, arg6, arg7) LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6) #define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3) + #endif /* __ASSEMBLER__ */ #endif /* _BITS_SYSCALLS_H */ diff --git a/libc/sysdeps/linux/arm/syscall.c b/libc/sysdeps/linux/arm/syscall.c index 92a535e23..ec2907939 100644 --- a/libc/sysdeps/linux/arm/syscall.c +++ b/libc/sysdeps/linux/arm/syscall.c @@ -39,7 +39,7 @@ long syscall(long sysnum, long a, long b, long c, long d, long e, long f) : "i"(__NR_syscall), "r"(_r0), "r"(_r1), "r"(_r2), "r"(_r3), "r"(_r4), "r"(_r5), "r"(_r6) - : "r0", "memory"); + : "memory"); if(_r0 >=(unsigned long) -4095) { (*__errno_location())=(-_r0); _r0=(unsigned long) -1; |