1/*
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	$Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp
34 */
35
36#if defined(LIBC_SCCS) && !defined(lint)
37#if 0
38	.asciz "@(#)_setjmp.s	8.1 (Berkeley) 6/4/93"
39#else
40	RCSID("$NetBSD: _setjmp.S,v 1.4 1998/10/08 02:27:59 eeh Exp $")
41#endif
42#endif /* LIBC_SCCS and not lint */
43
44#include <machine/asm.h>
45__FBSDID("$FreeBSD$");
46
47#define	_JB_FP		0x0
48#define	_JB_PC		0x8
49#define	_JB_SP		0x10
50
51	.register %g2,#ignore
52	.register %g3,#ignore
53
54/*
55 * C library -- setjmp, longjmp
56 *
57 *	longjmp(a,v)
58 * will generate a "return(v?v:1)" from
59 * the last call to
60 *	setjmp(a)
61 * by restoring the previous context.
62 */
63
64ENTRY(_setjmp)
65	stx	%sp, [%o0 + _JB_SP]
66	stx	%o7, [%o0 + _JB_PC]
67	stx	%fp, [%o0 + _JB_FP]
68	retl
69	 clr	%o0
70END(_setjmp)
71
72ENTRY(_longjmp)
73	mov	1, %g1
74	movrnz	%o1, %o1, %g1
75	mov	%o0, %g2
76	ldx	[%g2 + _JB_FP], %g3
771:	cmp	%fp, %g3
78	bl,a	1b
79	 restore
80	be,a	2f
81	 ldx	[%g2 + _JB_SP], %o0
82
83.Lbotch:
84	illtrap
85
862:	cmp	%o0, %sp
87	bge,a	3f
88	 mov	%o0, %sp
89	b,a	.Lbotch
90	 nop
913:	ldx	[%g2 + _JB_PC], %o7
92	retl
93	 mov	%g1, %o0
94END(_longjmp)
95