NetBSD/lib/libc/sparc/SYS.h

90 lines
3.4 KiB
C

/*-
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* @(#)SYS.h 8.1 (Berkeley) 6/4/93
*
* from: Header: SYS.h,v 1.2 92/07/03 18:57:00 torek Exp
* $Id: SYS.h,v 1.1 1993/09/05 22:14:57 deraadt Exp $
*/
#include <sys/syscall.h>
#include <machine/trap.h>
#ifdef PROF
#define ENTRY(x) \
.align 4; .globl _##x; .proc 1; _##x:; .data; .align 4; 1: .long 0; \
.text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \
or %o0,%lo(1b),%o0; restore
#else
#define ENTRY(x) \
.align 4; .globl _##x; .proc 1; _##x:
#endif
/*
* ERROR branches to cerror. This is done with a macro so that I can
* change it to be position independent later, if need be.
*/
#define ERROR() \
sethi %hi(cerror),%g1; or %lo(cerror),%g1,%g1; jmp %g1; nop
/*
* 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(x) \
ENTRY(x); mov 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(x) \
ENTRY(x); mov (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(x,y) \
ENTRY(x); mov (SYS_##y)|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
t ST_SYSCALL; ERROR()
#define ASMSTR .asciz
.globl cerror