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
37int _getsp();
38
39int
40setjmp(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;
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_sigmask[0] = 0;
62	bp->sjs_sigmask[1] = 0;
63	bp->sjs_sigmask[2] = 0;
64	bp->sjs_stack = uc.uc_stack;
65
66	return (0);
67}
68
69
70void
71longjmp(env, val)
72	jmp_buf env;
73	int val;
74{
75	o_setjmp_struct_t *bp = (o_setjmp_struct_t *)env;
76	setjmp_struct_t sjmp, *sp;
77
78	sp = &sjmp;
79	sp->sjs_flags = bp->sjs_flags;
80	sp->sjs_sp = bp->sjs_sp;
81	sp->sjs_pc = bp->sjs_pc;
82	sp->sjs_fp = 0;
83	sp->sjs_i7 = 0;
84	sp->sjs_uclink = 0;
85	sp->sjs_sigmask[0] = bp->sjs_sigmask[0];
86	sp->sjs_sigmask[1] = bp->sjs_sigmask[1];
87	sp->sjs_sigmask[2] = bp->sjs_sigmask[2];
88	sp->sjs_sigmask[3] = 0;
89	sp->sjs_stack = bp->sjs_stack;
90	_siglongjmp(sjmp, val);
91}
92