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/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $OpenBSD: SYS.h,v 1.16 2003/06/02 20:18:30 millert Exp $
*/
#include <sys/syscall.h>
#include <machine/asm.h>
#define _IMMEDIATE_ #
#ifdef __STDC__
# define __ENTRY(p,x) ENTRY(p##x)
# define __DO_SYSCALL(x) \
movl _IMMEDIATE_ SYS_##x, d0; \
trap _IMMEDIATE_ 0
# define __LABEL2(p,x) _C_LABEL(p##x)
#else
# define __ENTRY(p,x) ENTRY(p/**/x)
# define __DO_SYSCALL(x) \
movl _IMMEDIATE_ SYS_/**/x, d0; \
trap _IMMEDIATE_ 0
# define __LABEL2(p,x) _C_LABEL(p/**/x)
#endif
/* perform a syscall */
#define __SYSCALL_NOERROR(p,x,y) \
__ENTRY(p,x); \
__ALIAS(p,x); \
__DO_SYSCALL(y)
/* perform a syscall, set errno */
#define __SYSCALL(p,x,y) \
.even; \
err: jra __cerror; \
__SYSCALL_NOERROR(p,x,y); \
jcs err
/* perform a syscall, return */
#define __PSEUDO_NOERROR(p,x,y) \
__SYSCALL_NOERROR(p,x,y); \
rts
/* perform a syscall, set errno, return */
#define __PSEUDO(p,x,y) \
__SYSCALL(p,x,y); \
rts
#ifdef __STDC__
#define __ALIAS(prefix,name) \
WEAK_ALIAS(name,prefix##name);
#else
#define __ALIAS(prefix,name) \
WEAK_ALIAS(name,prefix/**/name);
#endif
/*
* System calls entry points are really named _thread_sys_{syscall},
* and weakly aliased to the name {syscall}. This allows the thread
* library to replace system calls at link time.
*/
# define SYSCALL(x) __SYSCALL(_thread_sys_,x,x)
# define RSYSCALL(x) __PSEUDO(_thread_sys_,x,x)
# define PSEUDO(x,y) __PSEUDO(_thread_sys_,x,y)
# define PSEUDO_NOERROR(x,y) __PSEUDO_NOERROR(_thread_sys_,x,y)
# define SYSENTRY(x) __ENTRY(_thread_sys_,x); \
__ALIAS(_thread_sys_,x)
#define ASMSTR .asciz
.globl __cerror
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