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- #ifndef _ASM_I386_UNISTD_H_
- #define _ASM_I386_UNISTD_H_
-
- /* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
- #define _syscall0(type,name) \
- type name(void) \
- { \
- long __res; \
- __asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name)); \
- if (__res >= 0) \
- return (type) __res; \
- errno = -__res; \
- return -1; \
- }
-
- #define _syscall1(type,name,type1,arg1) \
- type name(type1 arg1) \
- { \
- long __res; \
- __asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1))); \
- if (__res >= 0) \
- return (type) __res; \
- errno = -__res; \
- return -1; \
- }
-
- #define _syscall2(type,name,type1,arg1,type2,arg2) \
- type name(type1 arg1,type2 arg2) \
- { \
- long __res; \
- __asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
- if (__res >= 0) \
- return (type) __res; \
- errno = -__res; \
- return -1; \
- }
-
- #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
- type name(type1 arg1,type2 arg2,type3 arg3) \
- { \
- long __res; \
- __asm__ volatile ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3))); \
- if (__res>=0) \
- return (type) __res; \
- errno=-__res; \
- return -1; \
- }
-
- #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 ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3)),"S" ((long)(arg4))); \
- if (__res>=0) \
- return (type) __res; \
- errno=-__res; \
- return -1; \
- }
-
- #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 ("int $0x80" \
- : "=a" (__res) \
- : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
- "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
- if (__res>=0) \
- return (type) __res; \
- errno=-__res; \
- return -1; \
- }
-
- #ifdef __KERNEL_SYSCALLS__
-
- /*
- * we need this inline - forking from kernel space will result
- * in NO COPY ON WRITE (!!!), until an execve is executed. This
- * is no problem, but for the stack. This is handled by not letting
- * main() use the stack at all after fork(). Thus, no function
- * calls - which means inline code for fork too, as otherwise we
- * would use the stack upon exit from 'fork()'.
- *
- * Actually only pause and fork are needed inline, so that there
- * won't be any messing with the stack from main(), but we define
- * some others too.
- */
- #define __NR__exit __NR_exit
- static inline _syscall0(int,idle)
- static inline _syscall0(int,fork)
- static inline _syscall0(int,pause)
- static inline _syscall0(int,setup)
- static inline _syscall0(int,sync)
- static inline _syscall0(pid_t,setsid)
- static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
- static inline _syscall1(int,dup,int,fd)
- static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
- static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
- static inline _syscall1(int,close,int,fd)
- static inline _syscall1(int,_exit,int,exitcode)
- static inline _syscall3(pid_t,waitpid,pid_t,pid,int *,wait_stat,int,options)
-
- static inline pid_t wait(int * wait_stat)
- {
- return waitpid(-1,wait_stat,0);
- }
-
- #endif
-
- #endif /* _ASM_I386_UNISTD_H_ */
-