third_party/android_crazy_linker/src/tests/test_load_library.cpp

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // A crazy linker test to:
   6 // - Load a library (libfoo.so) with the linker.
   7 // - Find the address of the "Foo" function in it.
   8 // - Call the function.
   9 // - Close the library.
  10
  11 #include <stdio.h>
  12 #include <crazy_linker.h>
  13
  14 #include "test_util.h"
  15
  16 typedef void (*FunctionPtr)();
  17
  18 int main() {
  19   crazy_context_t* context = crazy_context_create();
  20   crazy_library_t* library;
  21
  22   // DEBUG
  23   crazy_context_set_load_address(context, 0x20000000);
  24
  25   // Load libfoo.so
  26   if (!crazy_library_open(&library, "libfoo.so", context)) {
  27     Panic("Could not open library: %s\n", crazy_context_get_error(context));
  28   }
  29
  30   // Find the "Foo" symbol.
  31   FunctionPtr foo_func;
  32   if (!crazy_library_find_symbol(
  33            library, "Foo", reinterpret_cast<void**>(&foo_func))) {
  34     Panic("Could not find 'Foo' in libfoo.so\n");
  35   }
  36
  37   // Call it.
  38   (*foo_func)();
  39
  40   // Close the library.
  41   printf("Closing libfoo.so\n");
  42   crazy_library_close(library);
  43
  44   crazy_context_destroy(context);
  45
  46   return 0;
  47 }