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1 /*
2 * Copyright (c) 2008 Apple Inc. All rights reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23 #include <stdlib.h> // EXIT_SUCCESS
24 #include <mach-o/dyld.h>
25 #include <mach-o/dyld_priv.h>
26 #include <dlfcn.h>
27
28 #include "test.h"
29
30 extern void foo();
31
32 intptr_t findSlide(const struct mach_header* mh)
33 {
34 int count = _dyld_image_count();
35 for(int i=0; i < count; ++i) {
36 if ( mh == _dyld_get_image_header(i) ) {
37 return _dyld_get_image_vmaddr_slide(i);
38 }
39 }
40 return -1;
41 }
42
43
44 int
45 main()
46 {
47 // find mach_header for libfoo.dylib
48 const struct mach_header* mh;
49 Dl_info info;
50 if ( dladdr(&foo, &info) ) {
51 mh = info.dli_fbase;
52 }
53 else {
54 FAIL("dladdr() could not find foo()");
55 exit(0);
56 }
57
58
59 intptr_t slide1 = _dyld_get_image_slide(mh);
60 intptr_t slide2 = findSlide(mh);
61 if ( slide1 == slide2 )
62 PASS("image-slide");
63 else
64 FAIL("image-slide: 0x%lX != 0x%lX", slide1, slide2);
65
66 return EXIT_SUCCESS;
67 }
68
69