1/*	$OpenBSD: _setjmp.S,v 1.3 2004/05/04 15:57:06 miod Exp $	*/
2/*	$NetBSD: _setjmp.S,v 1.4 1998/10/08 02:27:59 eeh Exp $	*/
3
4/*
5 * Copyright (c) 1992, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This software was developed by the Computer Systems Engineering group
9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10 * contributed to Berkeley.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#include <machine/asm.h>
38
39	.register	%g2,#ignore
40	.register	%g3,#ignore
41
42/*
43 * C library -- _setjmp, _longjmp
44 *
45 *	_longjmp(a,v)
46 * will generate a "return(v?v:1)" from
47 * the last call to
48 *	_setjmp(a)
49 * by restoring the previous context.
50 * The previous signal state is NOT restored.
51 */
52
53ENTRY(_setjmp)
54	stx	%sp, [%o0 + 0x00]	/* store caller's stack pointer */
55	stx	%o7, [%o0 + 0x08]	/* ... and return pc */
56	retl
57	 clr	%o0			! return 0
58
59ENTRY(_longjmp)
60	save	%sp, -CC64FSZ, %sp
61	flushw
62	ldx	[%i0 + 0x00], %fp
63	ldx	[%i0 + 0x08], %i7
64	mov	1, %i0
65	movrnz	%i1, %i1, %i0		! compute v ? v : 1
66	ret
67	 restore
68