1/*	$NetBSD: sigsetjmp.S,v 1.6 2013/04/19 16:50:22 matt Exp $	*/
2
3/*
4 * Copyright (c) 1997 Mark Brinicombe
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Mark Brinicombe
18 * 4. 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 AUTHOR 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 AUTHOR 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 <machine/asm.h>
36__FBSDID("$FreeBSD$");
37
38#include <machine/setjmp.h>
39
40/*
41 * C library -- sigsetjmp, siglongjmp
42 *
43 *	longjmp(a,v)
44 * will generate a "return(v)" from the last call to
45 *	setjmp(a, m)
46 * by restoring registers from the stack.
47 * The previous signal state is restored.
48 */
49
50ENTRY(sigsetjmp)
51	teq	r1, #0
52	beq	PIC_SYM(_C_LABEL(_setjmp), PLT)
53	b	PIC_SYM(_C_LABEL(setjmp), PLT)
54END(sigsetjmp)
55
56.L_setjmp_magic:
57	.word	_JB_MAGIC__SETJMP
58WEAK_ALIAS(__siglongjmp, siglongjmp)
59
60ENTRY(siglongjmp)
61	ldr	r2, .L_setjmp_magic		/* load magic */
62	ldr	r3, [r0]			/* get magic from jmp_buf */
63	bic	r3, r3, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP)
64						/* ignore VFP-ness of magic */
65	teq	r2, r3				/* magic correct? */
66	beq	PIC_SYM(_C_LABEL(_longjmp), PLT)
67	b	PIC_SYM(_C_LABEL(longjmp), PLT)
68END(siglongjmp)
69
70	.section .note.GNU-stack,"",%progbits
71