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
32 void
sbcp_init(int argc,char * argv[],char * envp[])33 sbcp_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