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/* $OpenBSD: SYS.h,v 1.20 2015/10/23 04:39:25 guenther Exp $ */
/* $NetBSD: SYS.h,v 1.4 1997/05/02 18:15:32 kleink Exp $ */
/*
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* 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.
*/
#include "DEFS.h"
#include <sys/syscall.h>
#define _CAT(x,y) x##y
#define __ENTRY(p,x) ENTRY(p##x,0)
#define __DO_SYSCALL(x) chmk $ SYS_ ## x
#define __END(p,x) END(p##x); _HIDDEN_FALIAS(x, p##x); END(_HIDDEN(x))
#define __SYSCALL(p,x,y) \
99: jmp _C_LABEL(__cerror); \
__ENTRY(p,x); \
__DO_SYSCALL(y); \
jcs 99b
#define __PSEUDO(p,x,y) \
__ENTRY(p,x); \
__DO_SYSCALL(y); \
jcs 1f; \
ret; \
1: jmp _C_LABEL(__cerror); \
__END(p,x)
#define __PSEUDO_NOERROR(p,x,y) \
__ENTRY(p,x); \
__DO_SYSCALL(y); \
ret; \
__END(p,x)
#define __ALIAS(prefix,name) \
WEAK_ALIAS(name,prefix##name);
/*
* For the thread_safe versions, we prepend _thread_sys_ to the function
* name so that the 'C' wrapper can go around the real name.
*/
#define SYSCALL(x) __ALIAS(_thread_sys_,x) \
__SYSCALL(_thread_sys_,x,x)
#define SYSCALL_END_HIDDEN(x) __END(_thread_sys_,x)
#define SYSCALL_END(x) SYSCALL_END_HIDDEN(x); END(x)
#define RSYSCALL(x) __ALIAS(_thread_sys_,x) \
__PSEUDO(_thread_sys_,x,x); \
END(x)
#define RSYSCALL_HIDDEN(x) __PSEUDO(_thread_sys_,x,x)
#define PSEUDO(x,y) __ALIAS(_thread_sys_,x) \
__PSEUDO(_thread_sys_,x,y); \
END(x)
#define PSEUDO_NOERROR(x,y) __ALIAS(_thread_sys_,x) \
__PSEUDO_NOERROR(_thread_sys_,x,y); \
END(x)
#define SYSENTRY_HIDDEN(x) __ENTRY(_thread_sys_,x)
#define SYSENTRY(x) __ALIAS(_thread_sys_,x) \
SYSENTRY_HIDDEN(x)
#define SYSNAME(x) _CAT(__thread_sys_,x)
.globl _C_LABEL(__cerror)
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