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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 */