1/*	$OpenBSD: sigsetjmp.S,v 1.2 2004/02/01 05:40:52 drahn Exp $	*/
2/*	$NetBSD: sigsetjmp.S,v 1.3 2002/08/17 19:54:30 thorpej Exp $	*/
3
4/*
5 * Copyright (c) 1997 Mark Brinicombe
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by Mark Brinicombe
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#define _ALIGN_TEXT .align 0
37
38#include <machine/asm.h>
39#include <machine/setjmp.h>
40
41/*
42 * C library -- sigsetjmp, siglongjmp
43 *
44 *	longjmp(a,v)
45 * will generate a "return(v)" from the last call to
46 *	setjmp(a, m)
47 * by restoring registers from the stack.
48 * The previous signal state is restored.
49 */
50
51ENTRY(sigsetjmp)
52	teq	r1, #0
53	beq	PIC_SYM(_C_LABEL(_setjmp), PLT)
54	b	PIC_SYM(_C_LABEL(setjmp), PLT)
55END(sigsetjmp)
56
57.L_setjmp_magic:
58	.word	_JB_MAGIC__SETJMP
59
60ENTRY(siglongjmp)
61	ldr	r2, .L_setjmp_magic
62	ldr	r3, [r0]
63	teq	r2, r3
64	beq	PIC_SYM(_C_LABEL(_longjmp), PLT)
65	b	PIC_SYM(_C_LABEL(longjmp), PLT)
66END(siglongjmp)
67