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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1988 AT&T */
23 /* All Rights Reserved */
24
25
26 /*
27 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
28 * Use is subject to license terms.
29 */
30
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33
34 #include <sys/setjmp.h>
35 #include "../common/ucontext.h"
36
37 int _getsp();
38
39 int
setjmp(env)40 setjmp(env)
41 jmp_buf env;
42 {
43 register o_setjmp_struct_t *bp = (o_setjmp_struct_t *)env;
44 register int sp = _getsp();
45 ucontext_t uc;
46
47 /*
48 * Get the current machine context.
49 */
50 uc.uc_flags = UC_STACK | UC_SIGMASK;
51 __getcontext(&uc);
52
53 /*
54 * Note that the pc and former sp (fp) from the stack are valid
55 * because the call to __getcontext must flush the user windows
56 * to the stack.
57 */
58 bp->sjs_flags = 0;
59 bp->sjs_sp = *((int *)sp+14);
60 bp->sjs_pc = *((int *)sp+15) + 0x8;
61 bp->sjs_stack = uc.uc_stack;
62
63 /* save the mask */
64 bp->sjs_flags |= JB_SAVEMASK;
65 memcpy(bp->sjs_sigmask, &(uc.uc_sigmask), 3 * sizeof (int));
66
67 return (0);
68 }
69
70
71
72 void
longjmp(env,val)73 longjmp(env, val)
74 jmp_buf env;
75 int val;
76 {
77 o_setjmp_struct_t *bp = (o_setjmp_struct_t *)env;
78 setjmp_struct_t sjmp, *sp;
79
80 sp = &sjmp;
81 sp->sjs_flags = bp->sjs_flags;
82 sp->sjs_sp = bp->sjs_sp;
83 sp->sjs_pc = bp->sjs_pc;
84 sp->sjs_fp = 0;
85 sp->sjs_i7 = 0;
86 sp->sjs_uclink = 0;
87 sp->sjs_sigmask[0] = bp->sjs_sigmask[0];
88 sp->sjs_sigmask[1] = bp->sjs_sigmask[1];
89 sp->sjs_sigmask[2] = bp->sjs_sigmask[2];
90 sp->sjs_sigmask[3] = 0;
91 sp->sjs_stack = bp->sjs_stack;
92 _siglongjmp(sjmp, val);
93 }
94