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(INLINE_SYSCALL): Add implementation.

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This commit is contained in:
Ulrich Drepper 1998-12-22 17:25:07 +00:00
parent bc46f1f605
commit ba023f01b9
1 changed files with 46 additions and 0 deletions
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46
sysdeps/unix/sysv/linux/arm/sysdep.h
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@ -104,6 +104,52 @@
#define UNDOARGS_4 /* nothing */
#define UNDOARGS_5 ldr r4, [sp];
#else /* not __ASSEMBLER__ */
/* Define a macro which expands into the inline wrapper code for a system
call. */
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
({ unsigned int _sys_result; \
{ \
register int _a1 asm ("a1"); \
LOAD_ARGS_##nr (args) \
asm volatile ("swi %1" \
: "=r" (_a1) \
: "i" (SYS_ify(name)) ASM_ARGS_##nr \
: "a1"); \
_sys_result = _a1; \
} \
if (_sys_result >= (unsigned int) -4095) \
{ \
__set_errno (-_sys_result); \
_sys_result = (unsigned int) -1; \
} \
(int) _sys_result; })
#define LOAD_ARGS_0()
#define ASM_ARGS_0
#define LOAD_ARGS_1(a1) \
_a1 = (int) (a1); \
LOAD_ARGS_0 ()
#define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1)
#define LOAD_ARGS_2(a1, a2) \
register int _a2 asm ("a2") = (int) (a2); \
LOAD_ARGS_1 (a1)
#define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2)
#define LOAD_ARGS_3(a1, a2, a3) \
register int _a3 asm ("a3") = (int) (a3); \
LOAD_ARGS_2 (a1, a2)
#define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3)
#define LOAD_ARGS_4(a1, a2, a3, a4) \
register int _a4 asm ("a4") = (int) (a4); \
LOAD_ARGS_3 (a1, a2, a3)
#define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4)
#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
register int _v1 asm ("v1") = (int) (a5); \
LOAD_ARGS_4 (a1, a2, a3, a4)
#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1)
#endif /* __ASSEMBLER__ */
#endif /* linux/arm/sysdep.h */