xref: /titanic_41/usr/src/lib/libc/amd64/gen/siglongjmp.c (revision 0eb822a1c0c2bea495647510b75f77f0e57633eb)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #pragma weak siglongjmp = _siglongjmp
30 
31 #include "synonyms.h"
32 #include <sys/types.h>
33 #include <sys/ucontext.h>
34 #include <setjmp.h>
35 #include <ucontext.h>
36 
37 extern int _setcontext(const ucontext_t *);
38 
39 void
40 _siglongjmp(sigjmp_buf env, int val)
41 {
42 	/* LINTED alignment */
43 	ucontext_t *ucp = (ucontext_t *)env;
44 
45 	if (val)
46 		ucp->uc_mcontext.gregs[REG_R0] = val;
47 	else
48 		ucp->uc_mcontext.gregs[REG_R0] = 1;
49 
50 	(void) _setcontext(ucp);
51 }
52