xref: /illumos-gate/usr/src/lib/libc/i386/gen/siglongjmp.c (revision bcd524b5c10222cf2a1ef37ac7ea8bf1baa3a2ee)
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 /*	Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.	*/
28 /*	Copyright (c) 1988 AT&T	*/
29 /*	  All Rights Reserved  	*/
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 #pragma weak siglongjmp = _siglongjmp
34 
35 #include "synonyms.h"
36 #include <sys/types.h>
37 #include <sys/ucontext.h>
38 #include <setjmp.h>
39 #include <ucontext.h>
40 
41 extern int _setcontext(const ucontext_t *);
42 
43 void
44 _siglongjmp(sigjmp_buf env, int val)
45 {
46 	ucontext_t *ucp = (ucontext_t *)env;
47 
48 	if (val)
49 		ucp->uc_mcontext.gregs[EAX] = val;
50 	else
51 		ucp->uc_mcontext.gregs[EAX] = 1;
52 
53 	(void) _setcontext(ucp);
54 }
55