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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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 1.15 2012/09/04 19:08:13 deraadt Exp $
*/
#include <machine/asm.h>
#include <sys/syscall.h>
#include <machine/trap.h>
#ifdef __STDC__
#define _CAT(x,y) x##y
#else
#define _CAT(x,y) x/**/y
#endif
#define __ENTRY(p,x) ENTRY(_CAT(p,x)) ; .weak x ; x = _CAT(p,x)
/*
* ERROR branches to cerror.
*/
#ifdef __PIC__
#if __PIC__ == 1
#define ERROR() \
PIC_PROLOGUE(%g1,%g2); \
ld [%g1+_C_LABEL(__cerror)],%g2; jmp %g2; nop
#else /* __PIC__ == 2 */
#define ERROR() \
PIC_PROLOGUE(%g1,%g2); \
sethi %hi(_C_LABEL(__cerror)),%g2; \
or %g2,%lo(_C_LABEL(__cerror)),%g2; \
ld [%g1+%g2],%g2; jmp %g2; nop
#endif
#else
#define ERROR() \
sethi %hi(_C_LABEL(__cerror)),%g1; \
or %lo(_C_LABEL(__cerror)),%g1,%g1; \
jmp %g1; \
nop
#endif
/*
* SYSCALL is used when further action must be taken before returning.
* Note that it adds a `nop' over what we could do, if we only knew what
* came at label 1....
*/
#define __SYSCALL(p,x) \
__ENTRY(p,x); mov _CAT(SYS_,x),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1:
/*
* RSYSCALL is used when the system call should just return. Here
* we use the SYSCALL_G2RFLAG to put the `success' return address in %g2
* and avoid a branch.
*/
#define __RSYSCALL(p,x) \
__ENTRY(p,x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL; ERROR()
/*
* PSEUDO(x,y) is like RSYSCALL(y) except that the name is x.
*/
#define __PSEUDO(p,x,y) \
__ENTRY(p,x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL; ERROR()
/*
* PSEUDO_NOERROR(x,y) is like PSEUDO(x,y) except that errno is not set.
*/
#define __PSEUDO_NOERROR(p,x,y) \
__ENTRY(p,x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL
# define SYSCALL(x) __SYSCALL(_thread_sys_,x)
# define RSYSCALL(x) __RSYSCALL(_thread_sys_,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)
.globl _C_LABEL(__cerror)
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