xref: /netbsd-src/lib/libc/arch/vax/sys/__syscall.S (revision 787e823fd1325737172861d30c613c7e6e7d2f3d)
10e233d15Smatt/*
20e233d15Smatt * Copyright (c) 1983, 1993
30e233d15Smatt *	The Regents of the University of California.  All rights reserved.
40e233d15Smatt * (c) UNIX System Laboratories, Inc.
50e233d15Smatt * All or some portions of this file are derived from material licensed
60e233d15Smatt * to the University of California by American Telephone and Telegraph
70e233d15Smatt * Co. or Unix System Laboratories, Inc. and are reproduced herein with
80e233d15Smatt * the permission of UNIX System Laboratories, Inc.
90e233d15Smatt *
100e233d15Smatt * Redistribution and use in source and binary forms, with or without
110e233d15Smatt * modification, are permitted provided that the following conditions
120e233d15Smatt * are met:
130e233d15Smatt * 1. Redistributions of source code must retain the above copyright
140e233d15Smatt *    notice, this list of conditions and the following disclaimer.
150e233d15Smatt * 2. Redistributions in binary form must reproduce the above copyright
160e233d15Smatt *    notice, this list of conditions and the following disclaimer in the
170e233d15Smatt *    documentation and/or other materials provided with the distribution.
18eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors
190e233d15Smatt *    may be used to endorse or promote products derived from this software
200e233d15Smatt *    without specific prior written permission.
210e233d15Smatt *
220e233d15Smatt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
230e233d15Smatt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
240e233d15Smatt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
250e233d15Smatt * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
260e233d15Smatt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
270e233d15Smatt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
280e233d15Smatt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
290e233d15Smatt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
300e233d15Smatt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
310e233d15Smatt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
320e233d15Smatt * SUCH DAMAGE.
330e233d15Smatt */
340e233d15Smatt
35*787e823fSmatt#include "SYS.h"
36*787e823fSmatt
370e233d15Smatt#if defined(SYSLIBC_SCCS) && !defined(lint)
380e233d15Smatt	/* .asciz "@(#)syscall.s	8.2 (Berkeley) 1/21/94" */
39*787e823fSmattRCSID("$NetBSD: __syscall.S,v 1.4 2011/01/25 02:38:15 matt Exp $")
400e233d15Smatt#endif /* SYSLIBC_SCCS and not lint */
410e233d15Smatt
420e233d15SmattENTRY(__syscall, 0)
430ce5ca14Smatt	movl	4(%ap),%r0	# syscall number
440ce5ca14Smatt	addl2	$8,%ap		# skip the first argument
450ce5ca14Smatt	subl3	$2,-8(%ap),(%ap)	# two fewer arguments
460ce5ca14Smatt	chmk	%r0
470e233d15Smatt	jcs	1f
480e233d15Smatt	ret
490e233d15Smatt1:
500e233d15Smatt	jmp	CERROR+2
51*787e823fSmattEND(__syscall)
52