sysdep.h

glibc 库, 不仅可以学习使用库函数,还可以学习函数的具体实现,是提高功力的好资料

/* Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Jakub Jelinek <[e-mail]>, 2000.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _LINUX_SPARC_SYSDEP_H
#define _LINUX_SPARC_SYSDEP_H 1

#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
  inline_syscall##nr(__SYSCALL_STRING, __NR_##name, args)

#undef INTERNAL_SYSCALL_DECL
#define INTERNAL_SYSCALL_DECL(err) do { } while (0)

#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, err, nr, args...) \
  inline_syscall##nr(__INTERNAL_SYSCALL_STRING, __NR_##name, args)

#undef INTERNAL_SYSCALL_NCS
#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
  inline_syscall##nr(__INTERNAL_SYSCALL_STRING, name, args)

#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err) \
  ((unsigned long) (val) >= -515L)

#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err)	(-(val))

#define inline_syscall0(string,name,dummy...)				\
({									\
	register long __o0 __asm__ ("o0");				\
	register long __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1) :					\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define inline_syscall1(string,name,arg1)				\
({									\
	register long __o0 __asm__ ("o0") = (long)(arg1);		\
	register long __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1), "1" (__o0) :			\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define inline_syscall2(string,name,arg1,arg2)				\
({									\
	register long __o0 __asm__ ("o0") = (long)(arg1);		\
	register long __o1 __asm__ ("o1") = (long)(arg2);		\
	register long __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1), "1" (__o0), "r" (__o1) :		\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define inline_syscall3(string,name,arg1,arg2,arg3)			\
({									\
	register long __o0 __asm__ ("o0") = (long)(arg1);		\
	register long __o1 __asm__ ("o1") = (long)(arg2);		\
	register long __o2 __asm__ ("o2") = (long)(arg3);		\
	register long __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1), "1" (__o0), "r" (__o1),		\
			  "r" (__o2) :					\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define inline_syscall4(string,name,arg1,arg2,arg3,arg4)		\
({									\
	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 __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1), "1" (__o0), "r" (__o1),		\
			  "r" (__o2), "r" (__o3) :			\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define inline_syscall5(string,name,arg1,arg2,arg3,arg4,arg5)		\
({									\
	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 __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1), "1" (__o0), "r" (__o1),		\
			  "r" (__o2), "r" (__o3), "r" (__o4) :		\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define inline_syscall6(string,name,arg1,arg2,arg3,arg4,arg5,arg6)	\
({									\
	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);		\
	register long __g1 __asm__ ("g1") = name;			\
	__asm __volatile (string : "=r" (__g1), "=r" (__o0) :		\
			  "0" (__g1), "1" (__o0), "r" (__o1),		\
			  "r" (__o2), "r" (__o3), "r" (__o4),		\
			  "r" (__o5) :					\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})

#define INLINE_CLONE_SYSCALL(arg1,arg2,arg3,arg4,arg5)			\
({									\
	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 __g1 __asm__ ("g1") = __NR_clone;			\
	__asm __volatile (__CLONE_SYSCALL_STRING :			\
			  "=r" (__g1), "=r" (__o0), "=r" (__o1)	:	\
			  "0" (__g1), "1" (__o0), "2" (__o1),		\
			  "r" (__o2), "r" (__o3), "r" (__o4) :		\
			  __SYSCALL_CLOBBERS);				\
	__o0;								\
})



#endif /* _LINUX_SPARC_SYSDEP_H */