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 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <sys/types.h>
28 #include <sys/systm.h>
29 #include <sys/door.h>
30 #include <sys/proc.h>
31 #include <sys/thread.h>
32 #include <sys/stack.h>
33 #include <sys/privregs.h>
34
35 int
door_finish_dispatch(caddr_t newsp)36 door_finish_dispatch(caddr_t newsp)
37 {
38 void lwp_setsp(klwp_t *, caddr_t);
39
40 /*
41 * If being traced, need to copy in syscall arguments for /proc
42 * before changing the sp. In most cases, this will have no
43 * effect, since we'll have already done this in door_return().
44 */
45 if (curthread->t_post_sys && PTOU(ttoproc(curthread))->u_systrap)
46 (void) save_syscall_args();
47 lwp_setsp(ttolwp(curthread), newsp);
48 lwptoregs(ttolwp(curthread))->r_fp = 0; /* stack ends here */
49
50 return (0);
51 }
52
53 /*ARGSUSED*/
54 uintptr_t
door_final_sp(uintptr_t resultsp,size_t align,int datamodel)55 door_final_sp(uintptr_t resultsp, size_t align, int datamodel)
56 {
57 return (resultsp);
58 }
59