134 lines
4.8 KiB
C
134 lines
4.8 KiB
C
/* $NetBSD: SYS.h,v 1.18 2003/10/29 12:28:33 pooka Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1996 Jonathan Stone
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Jonathan Stone for
|
|
* the NetBSD Project.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Ralph Campbell.
|
|
*
|
|
* 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.
|
|
*
|
|
* from: @(#)SYS.h 8.1 (Berkeley) 6/4/93
|
|
*/
|
|
|
|
#include <sys/syscall.h>
|
|
#include <mips/asm.h>
|
|
|
|
|
|
/*
|
|
* If compiling for shared libs, Emit sysV ABI PIC segment pseudo-ops.
|
|
*
|
|
* i) Emit .abicalls before .LEAF entrypoint, and .cpload/.cprestore after.
|
|
* ii) Do interprocedure jumps indirectly via t9, with the side-effect of
|
|
* preserving the callee's entry address in t9.
|
|
*/
|
|
#ifdef __ABICALLS__
|
|
.abicalls
|
|
# define PIC_PROLOGUE(x,sr) .set noreorder; .cpload sr; .set reorder
|
|
# define PIC_CALL(l,sr) la sr, _C_LABEL(l); jr sr
|
|
#else
|
|
# define PIC_PROLOGUE(x,sr)
|
|
# define PIC_CALL(l,sr) j _C_LABEL(l)
|
|
#endif
|
|
|
|
|
|
#ifdef __STDC__
|
|
# define SYSTRAP(x) li v0,SYS_ ## x; syscall;
|
|
#else
|
|
# define SYSTRAP(x) li v0,SYS_/**/x; syscall;
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Do a syscall that cannot fail (sync, get{p,u,g,eu,eg)id)
|
|
*/
|
|
#define RSYSCALL_NOERROR(x) \
|
|
PSEUDO_NOERROR(x,x)
|
|
|
|
/*
|
|
* Do a normal syscall.
|
|
*/
|
|
#define RSYSCALL(x) \
|
|
PSEUDO(x,x)
|
|
|
|
/*
|
|
* Do a syscall that has an internal name and a weak external alias.
|
|
*/
|
|
#define WSYSCALL(weak,strong) \
|
|
WEAK_ALIAS(weak,strong); \
|
|
PSEUDO(strong,weak)
|
|
|
|
/*
|
|
* Do a renamed or pseudo syscall (e.g., _exit()), where the entrypoint
|
|
* and syscall name are not the same.
|
|
*/
|
|
#define PSEUDO_NOERROR(x,y) \
|
|
LEAF(x); \
|
|
SYSTRAP(y); \
|
|
j ra; \
|
|
END(x)
|
|
|
|
#define PSEUDO(x,y) \
|
|
LEAF(x); \
|
|
PIC_PROLOGUE(x,t9); \
|
|
SYSTRAP(y); \
|
|
bne a3,zero,err; \
|
|
j ra; \
|
|
err: \
|
|
PIC_CALL(__cerror,t9); \
|
|
END(x)
|