sigsetjmp.S revision 1.1 
1/*-
2 * Copyright (c) 1991, 1993, 1995,
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Havard Eidnes.
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 the University of
19 *	California, Berkeley and its contributors.
20 * 4. 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 <sys/syscall.h>
38#include <machine/reg.h>
39#include <machine/machAsmDefs.h>
40#include <machine/setjmp.h>
41
42#if defined(LIBC_SCCS) && !defined(lint)
43	ASMSTR("from: @(#)setjmp.s	8.1 (Berkeley) 6/4/93")
44	ASMSTR("$Id: sigsetjmp.S,v 1.1 1995/12/15 01:12:38 jonathan Exp $")
45#endif /* LIBC_SCCS and not lint */
46
47/*
48 * C library -- sigsetjmp, siglongjmp
49 *
50 *	siglongjmp(a,v)
51 * will generate a "return(v)" from
52 * the last call to
53 *	sigsetjmp(a, savemask)
54 * by restoring registers from the stack,
55 * and dependent on savemask restores the
56 * signal mask.
57 */
58
59LEAF(sigsetjmp)
60	sw	a1, (_JBLEN*4)(a0)		# save "savemask"
61	bne	a1, 0x0, 1f			# do saving of signal mask?
62	j	_setjmp
631:	j	setjmp
64END(sigsetjmp)
65
66LEAF(siglongjmp)
67	lw	t0, (_JBLEN * 4)(a0)		# get "savemask"
68	bne	t0, 0x0, 1f			# restore signal mask?
69	j	_longjmp
701:	j	longjmp
71END(siglongjmp)
72