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(PSEUDO): Remove .type directive.

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(PSEUDO_RET): Use SYSCALL_ERROR in place of __syscall_error.
(SYSCALL_ERROR): New.
(SYSCALL_ERROR_HANDLER) [NOT_IN_libc]: Provide local copy of error
handling code.
(INTERNAL_SYSCALL): Define.
(INLINE_SYSCALL): Use it.
(INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): Define.
This commit is contained in:
Ulrich Drepper 2003-01-08 00:15:07 +00:00
parent 721fe4656c
commit 2f0910ca96
1 changed files with 34 additions and 9 deletions
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43
sysdeps/unix/sysv/linux/arm/sysdep.h
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@ -49,14 +49,13 @@
#undef PSEUDO
#define PSEUDO(name, syscall_name, args) \
.text; \
.type syscall_error,%function; \
ENTRY (name); \
DO_CALL (syscall_name, args); \
cmn r0, $4096;
#define PSEUDO_RET \
RETINSTR(movcc, pc, lr); \
b PLTJMP(__syscall_error)
b PLTJMP(SYSCALL_ERROR)
#undef ret
#define ret PSEUDO_RET
@ -65,7 +64,22 @@
SYSCALL_ERROR_HANDLER \
END (name)
#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
#if NOT_IN_libc
# define SYSCALL_ERROR __local_syscall_error
# define SYSCALL_ERROR_HANDLER \
__local_syscall_error: \
str lr, [sp, #-4]!; \
str r0, [sp, #-4]!; \
bl PLTJMP(C_SYMBOL_NAME(__errno_location)); \
ldr r1, [sp], #4; \
rsb r1, r1, #0; \
str r1, [r0]; \
mvn r0, #0; \
ldr pc, [sp], #4;
#else
# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
# define SYSCALL_ERROR __syscall_error
#endif
/* Linux takes system call args in registers:
syscall number in the SWI instruction
@ -123,7 +137,17 @@
/* 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; })
#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, nr, args...) \
({ unsigned int _sys_result; \
{ \
register int _a1 asm ("a1"); \
@ -134,13 +158,14 @@
: "a1", "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) ((unsigned int) (val) >= 0xfffff001u)
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val) (-(val))
#define LOAD_ARGS_0()
#define ASM_ARGS_0
#define LOAD_ARGS_1(a1) \