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 2008 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 /*
32 * Copyright 2023 Oxide Computer Company
33 */
34
35 #include "lint.h"
36 #include <sys/types.h>
37 #include <sys/ucontext.h>
38 #include <setjmp.h>
39 #include <ucontext.h>
40 #include <strings.h>
41 #include <upanic.h>
42 #include "libc.h"
43
44 #pragma weak _siglongjmp = siglongjmp
45
46 void
siglongjmp(sigjmp_buf env,int val)47 siglongjmp(sigjmp_buf env, int val)
48 {
49 const char *msg = "siglongjmp(): setcontext() returned";
50 ucontext_t *ucp = (ucontext_t *)env;
51
52 if (val)
53 ucp->uc_mcontext.gregs[EAX] = val;
54 else
55 ucp->uc_mcontext.gregs[EAX] = 1;
56
57 /*
58 * While unlikely, it is possible that setcontext() may fail for some
59 * reason. If that happens, we will kill the process.
60 */
61 (void) setcontext(ucp);
62 upanic(msg, strlen(msg) + 1);
63 }
64