109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/* libc/sys/linux/machine/i386/syscall.h - x86 linux system calls */
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/* Written 2000 by Werner Almesberger */
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#ifndef SYSCALL_H
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#include <sys/errno.h>
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#include <asm/unistd.h>
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/*
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* Note: several system calls are for SysV or BSD compatibility, or are
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* specific Linuxisms. Most of those system calls are not implemented in
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* this library.
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*/
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#if defined(__PIC__) && defined(__i386__)
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/*
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* PIC uses %ebx, so we need to save it during system calls
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*/
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#undef __inline_syscall1
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#define __inline_syscall1(name,ret,arg1) \
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__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
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: "=a" (ret) \
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: "0" (__NR_##name),"r" ((long)(arg1)));
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#undef __inline_syscall2
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#define __inline_syscall2(name,ret,arg1,arg2) \
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__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
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: "=a" (ret) \
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: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)));
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#undef __inline_syscall3
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#define __inline_syscall3(name,ret,arg1,arg2,arg3) \
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__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
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: "=a" (ret) \
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: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
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"d" ((long)(arg3)));
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#undef __inline_syscall4
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#define __inline_syscall4(name,ret,arg1,arg2,arg3,arg4) \
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__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
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: "=a" (ret) \
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: "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
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"d" ((long)(arg3)),"S" ((long)(arg4)));
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#undef __inline_syscall5
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#define __inline_syscall5(name,ret,arg1,arg2,arg3,arg4,arg5) \
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__asm__ volatile ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
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: "=a" (ret) \
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: "0" (__NR_##name),"m" ((long)(arg1)),"c" ((long)(arg2)), \
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"d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5)));
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#undef _syscall1
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#define _syscall1(type,name,type1,arg1) \
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type name(type1 arg1) \
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{ \
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long __res; \
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__inline_syscall1(name,__res,arg1) \
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__syscall_return(type,__res); \
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}
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#undef _syscall2
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#define _syscall2(type,name,type1,arg1,type2,arg2) \
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type name(type1 arg1,type2 arg2) \
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{ \
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long __res; \
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__inline_syscall2(name,__res,arg1,arg2) \
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__syscall_return(type,__res); \
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}
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#undef _syscall3
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#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
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type name(type1 arg1,type2 arg2,type3 arg3) \
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{ \
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long __res; \
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__inline_syscall3(name,__res,arg1,arg2,arg3) \
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__syscall_return(type,__res); \
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}
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#undef _syscall4
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#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
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type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
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{ \
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long __res; \
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__inline_syscall4(name,__res,arg1,arg2,arg3,arg4) \
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__syscall_return(type,__res); \
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}
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#undef _syscall5
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#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
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type5,arg5) \
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type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
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{ \
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long __res; \
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__inline_syscall5(name,__res,arg1,arg2,arg3,arg4,arg5) \
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__syscall_return(type,__res); \
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}
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#undef _syscall6
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#endif /* __PIC__ && __i386__ */
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#endif /* SYSCALL_H */
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