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lib/libsys/mips/SYS.h
- This file was added.
/* $NetBSD: SYS.h,v 1.19 2009/12/14 01:07:41 matt Exp $ */ | |||||
/* $FreeBSD$ */ | |||||
/*- | |||||
* SPDX-License-Identifier: (BSD-4-Clause AND BSD-3-Clause) | |||||
* | |||||
* 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 <machine/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 | |||||
# if defined(__mips_o32) || defined(__mips_o64) | |||||
# define PIC_PROLOGUE(x) SETUP_GP | |||||
# define PIC_TAILCALL(l) PTR_LA t9, _C_LABEL(l); jr t9 | |||||
# define PIC_RETURN() j ra | |||||
# else | |||||
# define PIC_PROLOGUE(x) SETUP_GP64(t3, x) | |||||
# define PIC_TAILCALL(l) PTR_LA t9, _C_LABEL(l); RESTORE_GP64; jr t9 | |||||
# define PIC_RETURN() RESTORE_GP64; j ra | |||||
# endif | |||||
#else | |||||
# define PIC_PROLOGUE(x) | |||||
# define PIC_TAILCALL(l) j _C_LABEL(l) | |||||
# define PIC_RETURN() j ra | |||||
#endif /* __ABICALLS__ */ | |||||
# define SYSTRAP(x) li v0,SYS_ ## x; syscall; | |||||
/* | |||||
* Do a syscall that cannot fail (sync, get{p,u,g,eu,eg)id) | |||||
*/ | |||||
#define RSYSCALL_NOERROR(x) \ | |||||
LEAF(__sys_ ## x); \ | |||||
.weak _C_LABEL(x); \ | |||||
_C_LABEL(x) = _C_LABEL(__CONCAT(__sys_,x)); \ | |||||
.weak _C_LABEL(__CONCAT(_,x)); \ | |||||
_C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \ | |||||
SYSTRAP(x); \ | |||||
j ra; \ | |||||
END(__sys_ ## x) | |||||
/* | |||||
* Do a normal syscall. | |||||
*/ | |||||
#define RSYSCALL(x) \ | |||||
LEAF(__sys_ ## x); \ | |||||
.weak _C_LABEL(x); \ | |||||
_C_LABEL(x) = _C_LABEL(__CONCAT(__sys_,x)); \ | |||||
.weak _C_LABEL(__CONCAT(_,x)); \ | |||||
_C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \ | |||||
PIC_PROLOGUE(__sys_ ## x); \ | |||||
SYSTRAP(x); \ | |||||
bne a3,zero,err; \ | |||||
PIC_RETURN(); \ | |||||
err: \ | |||||
PIC_TAILCALL(__cerror); \ | |||||
END(__sys_ ## x) | |||||
/* | |||||
* Do a renamed or pseudo syscall (e.g., _exit()), where the entrypoint | |||||
* and syscall name are not the same. | |||||
*/ | |||||
#define PSEUDO_NOERROR(x) \ | |||||
LEAF(__sys_ ## x); \ | |||||
.weak _C_LABEL(__CONCAT(_,x)); \ | |||||
_C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \ | |||||
SYSTRAP(x); \ | |||||
j ra; \ | |||||
END(__sys_ ## x) | |||||
#define PSEUDO(x) \ | |||||
LEAF(__sys_ ## x); \ | |||||
.weak _C_LABEL(__CONCAT(_,x)); \ | |||||
_C_LABEL(__CONCAT(_,x)) = _C_LABEL(__CONCAT(__sys_,x)); \ | |||||
PIC_PROLOGUE(__sys_ ## x); \ | |||||
SYSTRAP(x); \ | |||||
bne a3,zero,err; \ | |||||
PIC_RETURN(); \ | |||||
err: \ | |||||
PIC_TAILCALL(__cerror); \ | |||||
END(__sys_ ## x) |