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#ifndef _BITS_SYSCALLS_H
#define _BITS_SYSCALLS_H
#ifndef _SYSCALL_H
# error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
#endif
#ifndef __ASSEMBLER__
#include <errno.h>
#include <asm/traps.h>
#define __syscall_return(type, res) \
do { \
if (unlikely(INTERNAL_SYSCALL_ERROR_P(res, ))) { \
__set_errno(INTERNAL_SYSCALL_ERRNO(res, )); \
res = (unsigned long) -1; \
} \
return (type) (res); \
} while (0)
#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
({ \
long __res; \
__asm__ __volatile__ ( \
"movi r2, %2\n\t" /* TRAP_ID_SYSCALL */ \
"movi r3, %1\n\t" /* __NR_##name */ \
ASM_ARGS_##nr \
"trap\n\t" \
"mov %0, r2\n\t" /* syscall return */ \
: "=r" (__res) /* %0 */ \
: "i" (name) /* %1 */ \
, "i" (TRAP_ID_SYSCALL) /* %2 */ \
MAP_ARGS_##nr (args) /* %3-%8 */ \
: "r2" \
, "r3" \
CLOB_ARGS_##nr /* Clobbered */ \
); \
__res; \
})
#define INTERNAL_SYSCALL_ERROR_P(val, err) \
((unsigned long)(val) >= (unsigned long)(-125))
#define ASM_ARGS_0
#define MAP_ARGS_0()
#define CLOB_ARGS_0
#define ASM_ARGS_1 \
"mov r4, %3\n\t"
#define MAP_ARGS_1(a) \
, "r" ((long) a)
#define CLOB_ARGS_1 \
, "r4"
#define ASM_ARGS_2 \
ASM_ARGS_1 \
"mov r5, %4\n\t"
#define MAP_ARGS_2(a, b) \
MAP_ARGS_1(a) \
, "r" ((long) b)
#define CLOB_ARGS_2 \
CLOB_ARGS_1 \
, "r5"
#define ASM_ARGS_3 \
ASM_ARGS_2 \
"mov r6, %5\n\t"
#define MAP_ARGS_3(a, b, c) \
MAP_ARGS_2(a, b) \
, "r" ((long) c)
#define CLOB_ARGS_3 \
CLOB_ARGS_2 \
, "r6"
#define ASM_ARGS_4 \
ASM_ARGS_3 \
"mov r7, %6\n\t"
#define MAP_ARGS_4(a, b, c, d) \
MAP_ARGS_3(a, b, c) \
, "r" ((long) d)
#define CLOB_ARGS_4 \
CLOB_ARGS_3 \
, "r7"
#define ASM_ARGS_5 \
ASM_ARGS_4 \
"mov r8, %7\n\t"
#define MAP_ARGS_5(a, b, c, d, e) \
MAP_ARGS_4(a, b, c, d) \
, "r" ((long) e)
#define CLOB_ARGS_5 \
CLOB_ARGS_4 \
, "r8"
#define ASM_ARGS_6 \
ASM_ARGS_5 \
"mov r9, %8\n\t"
#define MAP_ARGS_6(a, b, c, d, e, f) \
MAP_ARGS_5(a, b, c, d, e) \
, "r" ((long) f)
#define CLOB_ARGS_6 \
CLOB_ARGS_5 \
, "r9"
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
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