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 #pragma weak _getustack = getustack
28 #pragma weak _setustack = setustack
29
30 #include "lint.h"
31 #include <ucontext.h>
32 #include <sys/syscall.h>
33
34 /*
35 * __getcontext() must be implemented in assembler, as opposed to
36 * the other members of the SYS_context family (see __getcontext.s)
37 * because we must be careful to get the precise context of the caller.
38 */
39
40 int
__setcontext(const ucontext_t * ucp)41 __setcontext(const ucontext_t *ucp)
42 {
43 return (syscall(SYS_context, 1, ucp));
44 }
45
46 int
getustack(stack_t ** spp)47 getustack(stack_t **spp)
48 {
49 return (syscall(SYS_context, 2, spp));
50 }
51
52 int
setustack(stack_t * sp)53 setustack(stack_t *sp)
54 {
55 return (syscall(SYS_context, 3, sp));
56 }
57