xref: /netbsd-src/lib/libc/arch/vax/sys/syscall.S (revision 77abcafc06acf32ff7f9d66654bcf4d2a02cae84)
1ce0bb6e8Sragge/*
2ce0bb6e8Sragge * Copyright (c) 1983, 1993
3ce0bb6e8Sragge *	The Regents of the University of California.  All rights reserved.
4ce0bb6e8Sragge * (c) UNIX System Laboratories, Inc.
5ce0bb6e8Sragge * All or some portions of this file are derived from material licensed
6ce0bb6e8Sragge * to the University of California by American Telephone and Telegraph
7ce0bb6e8Sragge * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8ce0bb6e8Sragge * the permission of UNIX System Laboratories, Inc.
9ce0bb6e8Sragge *
10ce0bb6e8Sragge * Redistribution and use in source and binary forms, with or without
11ce0bb6e8Sragge * modification, are permitted provided that the following conditions
12ce0bb6e8Sragge * are met:
13ce0bb6e8Sragge * 1. Redistributions of source code must retain the above copyright
14ce0bb6e8Sragge *    notice, this list of conditions and the following disclaimer.
15ce0bb6e8Sragge * 2. Redistributions in binary form must reproduce the above copyright
16ce0bb6e8Sragge *    notice, this list of conditions and the following disclaimer in the
17ce0bb6e8Sragge *    documentation and/or other materials provided with the distribution.
18eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors
19ce0bb6e8Sragge *    may be used to endorse or promote products derived from this software
20ce0bb6e8Sragge *    without specific prior written permission.
21ce0bb6e8Sragge *
22ce0bb6e8Sragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23ce0bb6e8Sragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24ce0bb6e8Sragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25ce0bb6e8Sragge * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26ce0bb6e8Sragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27ce0bb6e8Sragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28ce0bb6e8Sragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29ce0bb6e8Sragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30ce0bb6e8Sragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31ce0bb6e8Sragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32ce0bb6e8Sragge * SUCH DAMAGE.
33ce0bb6e8Sragge */
34ce0bb6e8Sragge
35787e823fSmatt#include "SYS.h"
36787e823fSmatt
37ce0bb6e8Sragge#if defined(SYSLIBC_SCCS) && !defined(lint)
38ce0bb6e8Sragge	/* .asciz "@(#)syscall.s	8.2 (Berkeley) 1/21/94" */
39*77abcafcSthorpejRCSID("$NetBSD: syscall.S,v 1.8 2020/04/18 23:55:51 thorpej Exp $")
40ce0bb6e8Sragge#endif /* SYSLIBC_SCCS and not lint */
41ce0bb6e8Sragge
42*77abcafcSthorpejENTRY(_syscall, 0)
430ce5ca14Smatt	movl	4(%ap),%r0	# syscall number
440ce5ca14Smatt	subl3	$1,(%ap)+,(%ap)	# one fewer arguments
450ce5ca14Smatt	chmk	%r0
46ce0bb6e8Sragge	jcs	1f
47ce0bb6e8Sragge	ret
48ce0bb6e8Sragge1:
49c3530f0cSmatt	jmp	CERROR+2
50*77abcafcSthorpejEND(_syscall)
51*77abcafcSthorpejWEAK_ALIAS(syscall,_syscall)
52