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 ident	"%Z%%M%	%I%	%E% SMI"
28
29#include <sys/auxv.h>
30#include <sys/types.h>
31
32void
33sbcp_init(int argc, char *argv[], char *envp[])
34{
35	auxv_t			*ap;
36	uintptr_t		*p;
37	int			err;
38
39	/*
40	 * Find the aux vector on the stack.
41	 */
42	p = (uintptr_t *)envp;
43	while (*p != NULL)
44		p++;
45
46	/*
47	 * p is now pointing at the 0 word after the environ pointers.
48	 * After that is the aux vectors.
49	 *
50	 * We need to clear the AF_SUN_NOPLM flag from the AT_SUN_AUXFLAGS
51	 * aux vector.  This flag told our linker that we don't have a
52	 * primary link map.  Now that our linker is done initializing, we
53	 * want to clear this flag before we transfer control to the
54	 * applications copy of the linker, since we want that linker to have
55	 * a primary link map which will be the link map for the application
56	 * we're running.
57	 */
58	p++;
59	for (ap = (auxv_t *)p; ap->a_type != AT_NULL; ap++) {
60		switch (ap->a_type) {
61			case AT_SUN_AUXFLAGS:
62				ap->a_un.a_val &= ~AF_SUN_NOPLM;
63				break;
64			default:
65				break;
66		}
67	}
68}
69