unit-tests/test-cases/all_image_infos-cache-slide/main.c

   1 /*
   2  * Copyright (c) 2010 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 <stdio.h>  // fprintf(), NULL
  24 #include <stdlib.h> // exit(), EXIT_SUCCESS
  25 #include <dlfcn.h>
  26 #include <mach-o/dyld.h>
  27 #include <mach-o/dyld_images.h>
  28 #include <mach/mach.h>
  29
  30 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  31
  32 static uintptr_t libSystemSlide()
  33 {
  34         Dl_info info;
  35         if ( dladdr(&malloc, &info) == 0 ) {
  36                 FAIL("all_image_infos-cache-slide: dladdr(&malloc, xx) failed");
  37                 exit(0);
  38         }
  39
  40         const struct mach_header* mallocMh = (struct mach_header*)info.dli_fbase;
  41         if ( (mallocMh->flags & 0x80000000) == 0 ) {
  42                 FAIL("all_image_infos-cache-slide: image containing _malloc not in shared cache");
  43                 exit(0);
  44         }
  45
  46         int count = _dyld_image_count();
  47         for(int i=0; i < count; ++i) {
  48                 if ( mallocMh == _dyld_get_image_header(i) ) {
  49                         return _dyld_get_image_vmaddr_slide(i);
  50                 }
  51         }
  52
  53         FAIL("all_image_infos-cache-slide: slide of image containing _malloc not found");
  54         exit(0);
  55 }
  56
  57
  58 int main(int argc, const char* argv[])
  59 {
  60         task_dyld_info_data_t task_dyld_info;
  61         mach_msg_type_number_t count = TASK_DYLD_INFO_COUNT;
  62
  63     if ( task_info(mach_task_self(), TASK_DYLD_INFO, (task_info_t)&task_dyld_info, &count) ) {
  64                 FAIL("all_image_infos-cache-slide: task_info() failed");
  65                 return 0;
  66         }
  67         struct dyld_all_image_infos* infos = (struct dyld_all_image_infos*)(uintptr_t)task_dyld_info.all_image_info_addr;
  68
  69         if ( infos->version < 12 ) {
  70                 FAIL("all_image_infos-cache-slide: version < 12");
  71                 return 0;
  72         }
  73
  74         if ( libSystemSlide() != infos->sharedCacheSlide ) {
  75                 FAIL("all_image_infos-cache-slide: dyld infos sharedCacheSlide (0x%08X) does not match computed slide (0x%08X)",
  76                                 infos->sharedCacheSlide, libSystemSlide());
  77                 return 0;
  78         }
  79
  80         PASS("all_image_infos-cache-slide");
  81         return EXIT_SUCCESS;
  82 }