unit-tests/test-cases/image_header_containing_address/main.c

   1 /*
   2  * Copyright (c) 2015 Apple Computer, 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 <stdio.h>  // fprintf(), NULL
  24 #include <stdlib.h> // exit(), EXIT_SUCCESS
  25 #include <string.h>
  26 #include <dlfcn.h>
  27 #include <mach-o/dyld.h>
  28 #include <mach-o/dyld_priv.h>
  29
  30 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  31
  32
  33 extern void foo();
  34
  35
  36 // checks dladdr() and dyld_image_header_containing_address() return same image
  37 static void verify(void* addr)
  38 {
  39         Dl_info info;
  40         if ( dladdr(addr, &info) == 0 ) {
  41                 FAIL("dladdr(%p, xx) failed", addr);
  42                 exit(0);
  43         }
  44         const struct mach_header* mh = dyld_image_header_containing_address(addr);
  45         if ( mh != info.dli_fbase ) {
  46                 FAIL("dladdr's  dli_fbase != dyld_image_header_containing_address()");
  47                 exit(0);
  48         }
  49 }
  50
  51
  52 int main()
  53 {
  54         verify(&main);
  55         verify(&foo);
  56
  57         int x;
  58         if ( dyld_image_path_containing_address(&x) != NULL ) {
  59                 FAIL("dyld_image_header_containing_address() of stack variable not NULL");
  60                 exit(0);
  61         }
  62
  63         PASS("dyld_image_header_containing_address");
  64         return EXIT_SUCCESS;
  65 }