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(INTERNAL_SYSCALL): Define.

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(INLINE_SYSCALL): Use it.
(INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): Define.
This commit is contained in:
Andreas Schwab 2002-12-21 19:36:50 +00:00
parent d68f861c07
commit 5d384858ff
1 changed files with 21 additions and 6 deletions
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27
sysdeps/unix/sysv/linux/m68k/sysdep.h
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@ -163,7 +163,21 @@ SYSCALL_ERROR_LABEL: \
/* Define a macro which expands into the inline wrapper code for a system
call. */
#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; })
/* Define a macro which expands inline into the wrapper code for a system
call. This use is for internal calls that do not need to handle errors
normally. It will never touch errno. This returns just what the kernel
gave back. */
#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, nr, args...) \
({ unsigned int _sys_result; \
{ \
LOAD_ARGS_##nr (args) \
@ -174,13 +188,14 @@ SYSCALL_ERROR_LABEL: \
: "memory"); \
_sys_result = _d0; \
} \
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) ((unsigned int) (val) >= -4095U)
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val) (-(val))
#define LOAD_ARGS_0()
#define ASM_ARGS_0
#define LOAD_ARGS_1(a1) \