unit-tests/test-cases/crt-custom/main.c

   1 /*
   2  * Copyright (c) 2007-2009 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 <Availability.h>
  27
  28 #include "test.h" // PASS(), FAIL(), XPASS(), XFAIL()
  29
  30 // the value of flag is altered by mystart
  31 int flag = 0;
  32
  33
  34 #if __LP64__
  35         // for 64-bit binaries initializers are always called before entry point
  36         #define ENTRY_BEFORE_INIT 0
  37 #else
  38         #if __MAC_OS_X_VERSION_MIN_REQUIRED
  39                 // for pre 10.5, 32-bit binaries, entry point is called which then calls initializers
  40                 #if __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_5
  41                         #define ENTRY_BEFORE_INIT 1
  42                 #else
  43                         #define ENTRY_BEFORE_INIT 0
  44                 #endif
  45         #else
  46                 // for iPhoneOS, initializers are always called before entry point
  47                 #define ENTRY_BEFORE_INIT 0
  48         #endif
  49 #endif
  50
  51
  52 void __attribute__((constructor)) myinit()
  53 {
  54 #if ENTRY_BEFORE_INIT
  55         if ( flag != 2 ) {
  56                 FAIL("crt-custom entry point not called before initializer");
  57                 exit(0);
  58         }
  59 #endif
  60         flag = 1;
  61 }
  62
  63
  64 int main()
  65 {
  66 #if ENTRY_BEFORE_INIT
  67         if ( flag != 1 ) {
  68                 FAIL("crt-custom initializer not called");
  69                 exit(0);
  70         }
  71 #else
  72         if ( flag != 2 ) {
  73                 FAIL("crt-custom entry not called");
  74                 exit(0);
  75         }
  76 #endif
  77
  78         PASS("crt-custom");
  79
  80         return 0;
  81 }