dl-syscalls.h

ucLinux is a very good embeded sytem. Most of company use this as their development OS.

/*
 * This file contains the system call macros and syscall 
 * numbers used by the shared library loader.
 *
 * NOTE: This should be integrated/moved to 
 *       sysdeps/linux/sparc/bits/syscalls.h at some point ...
 */

#define MMAP_HAS_6_ARGS

#define __NR_exit		  1
#define __NR_read		  3
#define __NR_write		  4
#define __NR_open		  5
#define __NR_close		  6
#define __NR_getpid		 20
#define __NR_getuid		 24
#define __NR_getgid		 47
#define __NR_geteuid		 49
#define __NR_getegid		 50
#define __NR_readlink		 58
#define __NR_mmap		 71
#define __NR_munmap		 73
#define __NR_stat		 38
#define __NR_mprotect		 74

/* We can't use the real errno in ldso, since it has not yet
 * been dynamicly linked in yet. */
extern int _dl_errno;
#define __set_errno(X) {(_dl_errno) = (X);}

/* Here are the macros which define how this platform makes
 * system calls.  This particular variant does _not_ set 
 * errno (note how _dl_errno is used in __syscall_return) since
 * these will get called before the errno symbol is dynamicly 
 * linked. */

#define __syscall_return(type, res) \
do { \
	if (res < -255 || res >= 0) \
		return (type) res; \
	__set_errno(-res); \
	res = -1; \
	return (type) res; \
} while (0)

#define _syscall0(type,name) \
type name(void) \
{ \
	long __res; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res)\
		: "r" (__g1) \
		: "o0", "cc"); \
	__syscall_return(type, __res); \
}

#define _syscall1(type,name,type1,arg1) \
type name(type1 arg1) \
{ \
	long __res; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	register long __o0 __asm__ ("o0") = (long)(arg1); \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res), "=&r" (__o0) \
		: "1" (__o0), "r" (__g1) \
		: "cc"); \
	__syscall_return(type, __res); \
}

#define _syscall2(type,name,type1,arg1,type2,arg2) \
type name(type1 arg1,type2 arg2) \
{ \
	long __res; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	register long __o0 __asm__ ("o0") = (long)(arg1); \
	register long __o1 __asm__ ("o1") = (long)(arg2); \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res), "=&r" (__o0) \
		: "1" (__o0), "r" (__o1), "r" (__g1) \
		: "cc"); \
	__syscall_return(type, __res); \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
type name(type1 arg1,type2 arg2,type3 arg3) \
{ \
	long __res; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	register long __o0 __asm__ ("o0") = (long)(arg1); \
	register long __o1 __asm__ ("o1") = (long)(arg2); \
	register long __o2 __asm__ ("o2") = (long)(arg3); \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res), "=&r" (__o0) \
		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
		: "cc"); \
	__syscall_return(type, __res); \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
{ \
	long __res; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	register long __o0 __asm__ ("o0") = (long)(arg1); \
	register long __o1 __asm__ ("o1") = (long)(arg2); \
	register long __o2 __asm__ ("o2") = (long)(arg3); \
	register long __o3 __asm__ ("o3") = (long)(arg4); \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res), "=&r" (__o0) \
		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
		: "cc"); \
	__syscall_return(type, __res); \
} 

#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; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	register long __o0 __asm__ ("o0") = (long)(arg1); \
	register long __o1 __asm__ ("o1") = (long)(arg2); \
	register long __o2 __asm__ ("o2") = (long)(arg3); \
	register long __o3 __asm__ ("o3") = (long)(arg4); \
	register long __o4 __asm__ ("o4") = (long)(arg5); \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res), "=&r" (__o0) \
		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
		: "cc"); \
	__syscall_return(type, __res); \
}

#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) \
{ \
	long __res; \
	register long __g1 __asm__ ("g1") = __NR_##name; \
	register long __o0 __asm__ ("o0") = (long)(arg1); \
	register long __o1 __asm__ ("o1") = (long)(arg2); \
	register long __o2 __asm__ ("o2") = (long)(arg3); \
	register long __o3 __asm__ ("o3") = (long)(arg4); \
	register long __o4 __asm__ ("o4") = (long)(arg5); \
	register long __o5 __asm__ ("o5") = (long)(arg6); \
	__asm__ __volatile__ ( \
		"t 0x10\n\t" \
		"bcc 1f\n\t" \
		"mov %%o0, %0\n\t" \
		"sub %%g0, %%o0, %0\n\t" \
		"1:\n\t" \
		: "=r" (__res), "=&r" (__o0) \
		: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__o5), "r" (__g1) \
		: "cc"); \
	__syscall_return(type, __res); \
}