1/*	$NetBSD: pipe.S,v 1.11.34.2 2009/08/18 06:56:52 matt Exp $	*/
2
3/*-
4 * Copyright (c) 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include "SYS.h"
36
37#if defined(LIBC_SCCS) && !defined(lint)
38#if 0
39	RCSID("from: @(#)pipe.s	8.1 (Berkeley) 6/4/93")
40#else
41	RCSID("$NetBSD: pipe.S,v 1.11.34.2 2009/08/18 06:56:52 matt Exp $")
42#endif
43#endif /* LIBC_SCCS and not lint */
44
45#ifdef WEAK_ALIAS
46WEAK_ALIAS(pipe, _pipe)
47#endif
48
49LEAF(_pipe)
50	PIC_PROLOGUE(_pipe);
51
52	SYSTRAP(pipe)	# pipe(fildes) int fildes[2];
53
54	bne	a3, zero, 1f
55	INT_S	v0, 0(a0)	# store the two file descriptors
56	INT_S	v1, 4(a0)
57	move	v0, zero
58	PIC_RETURN()
591:
60	PIC_TAILCALL(__cerror)
61END(_pipe)
62