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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
/*
* This includes the `__NR_<name>' syscall numbers taken from the
* Linux kernel header files. It also defines the traditional
* `SYS_<name>' macros for older programs.
*/
#include <bits/sysnum.h>
#ifndef __ASSEMBLER__
#include <errno.h>
#define SYS_ify(syscall_name) (__NR_##syscall_name)
#undef _syscall0
#define _syscall0(type,name) \
type name(void) \
{ \
return (type)(INLINE_SYSCALL(name, 0)); \
}
#undef _syscall1
#define _syscall1(type,name,type1,arg1) \
type name(type1 arg1) \
{ \
return (type)(INLINE_SYSCALL(name, 1, arg1)); \
}
#undef _syscall2
#define _syscall2(type,name,type1,arg1,type2,arg2) \
type name(type1 arg1, type2 arg2) \
{ \
return (type)(INLINE_SYSCALL(name, 2, arg1, arg2)); \
}
#undef _syscall3
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
type name(type1 arg1, type2 arg2, type3 arg3) \
{ \
return (type)(INLINE_SYSCALL(name, 3, arg1, \
arg2, arg3)); \
}
#undef _syscall4
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3, \
type4,arg4) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
return (type)(INLINE_SYSCALL(name, 4, arg1, arg2, \
arg3, arg4)); \
}
#undef _syscall5
#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3, \
type4,arg4,type5,arg5) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
type5 arg5) \
{ \
return (type)(INLINE_SYSCALL(name, 5, arg1, arg2, \
arg3, arg4, arg5)); \
}
#undef _syscall6
#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3, \
type4,arg4,type5,arg5,type6,arg6) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
type5 arg5, type6 arg6) \
{ \
return (type)(INLINE_SYSCALL(name, 6, arg1, arg2, arg3, \
arg4, arg5, arg6)); \
}
#undef unlikely
#define unlikely(x) __builtin_expect((x), 0)
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
({ \
unsigned _sys_result = INTERNAL_SYSCALL(name, , nr, args); \
if (unlikely(INTERNAL_SYSCALL_ERROR_P(_sys_result, ))) { \
__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...) \
({ \
register int _a1 asm ("r12"); \
register int _scno asm("r8") = SYS_ify(name); \
LOAD_ARGS_##nr (args); \
asm volatile ("scall /* syscall " #name " */" \
: "=r" (_a1) \
: "r"(_scno) ASM_ARGS_##nr \
: "cc", "memory"); \
_a1; \
})
#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, errr) (-(val))
#define LOAD_ARGS_0() do { } while(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("r11") = (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("r10") = (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("r9") = (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 _a5 asm("r5") = (int)(a5); \
LOAD_ARGS_4(a1, a2, a3, a4)
#define ASM_ARGS_5 ASM_ARGS_4, "r"(_a5)
#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
register int _a6 asm("r3") = (int)(a6); \
LOAD_ARGS_5(a1, a2, a3, a4, a5)
#define ASM_ARGS_6 ASM_ARGS_5, "r"(_a6)
#endif /* __ASSEMBLER__ */
#endif /* _BITS_SYSCALLS_H */
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