xref: /illumos-gate/usr/src/cmd/mdb/intel/amd64/kmdb/kmdb_setcontext.S (revision 9164a50bf932130cbb5097a16f6986873ce0e6e5)
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/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#include <sys/asm_linkage.h>
28#include <sys/regset.h>
29
30#if defined(__lint)
31#include <ucontext.h>
32#endif
33
34#include "kmdb_context_off.h"
35
36#if defined(__lint)
37/*ARGSUSED*/
38int
39kmdb_setcontext(ucontext_t *ucp)
40{
41	return (0);
42}
43#else
44
45	ENTRY(kmdb_setcontext)
46	movq	UC_GREG(REG_SP)(%rdi), %rsp
47	movq	UC_GREG(REG_PC)(%rdi), %rax
48	movq	UC_GREG(REG_RDI)(%rdi), %rdi
49
50	call	*%rax
51	/*NOTREACHED*/
52
53	ret
54	SET_SIZE(kmdb_setcontext)
55#endif
56