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/* libc/sys/linux/syscall.h - Linux system calls, common definitions */
/* Written 2000 by Werner Almesberger */
#ifndef SYSCALL_H
#include <sys/errno.h>
#include <asm/unistd.h>
/*
* Note: several system calls are for SysV or BSD compatibility, or are
* specific Linuxisms. Most of those system calls are not implemented in
* this library.
*/
#if defined(__PIC__) && defined(__i386__)
/*
* PIC uses %ebx, so we need to save it during system calls
*/
#undef _syscall1
#define _syscall1(type,name,type1,arg1) \
type name(type1 arg1) \
{ \
long __res; \
__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
: "=a" (__res) \
: "0" (__NR_##name),"r" ((long)(arg1))); \
__syscall_return(type,__res); \
}
#undef _syscall2
#define _syscall2(type,name,type1,arg1,type2,arg2) \
type name(type1 arg1,type2 arg2) \
{ \
long __res; \
__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
: "=a" (__res) \
: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2))); \
__syscall_return(type,__res); \
}
#undef _syscall3
#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
type name(type1 arg1,type2 arg2,type3 arg3) \
{ \
long __res; \
__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
: "=a" (__res) \
: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
"d" ((long)(arg3))); \
__syscall_return(type,__res); \
}
#undef _syscall4
#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
long __res; \
__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
: "=a" (__res) \
: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
"d" ((long)(arg3)),"S" ((long)(arg4))); \
__syscall_return(type,__res); \
}
#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) \
{ \
long __res; \
__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
: "=a" (__res) \
: "0" (__NR_##name),"m" ((long)(arg1)),"c" ((long)(arg2)), \
"d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
__syscall_return(type,__res); \
}
#undef _syscall6
#endif /* __PIC__ && __i386__ */
#endif /* SYSCALL_H */
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