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      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 (libbar.so) with the linker, which depends on
      7 //   another library (libfoo.so)
      8 // - Find the address of the "Bar" function in libbar.so.
      9 // - Call the Bar() function, which ends up calling Foo() in libfoo.so
     10 // - Close the library.
     11 
     12 #include <stdio.h>
     13 #include <crazy_linker.h>
     14 
     15 #include "test_util.h"
     16 
     17 typedef void (*FunctionPtr)();
     18 
     19 int main() {
     20   crazy_context_t* context = crazy_context_create();
     21   crazy_library_t* library;
     22 
     23   // DEBUG
     24   crazy_context_set_load_address(context, 0x20000000);
     25 
     26   // Load libbar.so
     27   if (!crazy_library_open(&library, "libbar.so", context)) {
     28     Panic("Could not open library: %s\n", crazy_context_get_error(context));
     29   }
     30 
     31   // Find the "Bar" symbol.
     32   FunctionPtr bar_func;
     33   if (!crazy_library_find_symbol(
     34            library, "Bar", reinterpret_cast<void**>(&bar_func))) {
     35     Panic("Could not find 'Bar' in libbar.so\n");
     36   }
     37 
     38   // Call it.
     39   (*bar_func)();
     40 
     41   // Find the "Foo" symbol from libbar.so
     42   FunctionPtr foo_func;
     43   if (!crazy_library_find_symbol(
     44            library, "Foo", reinterpret_cast<void**>(&foo_func))) {
     45     Panic("Could not find 'Foo' from libbar.so\n");
     46   }
     47 
     48   // Close the library.
     49   printf("Closing libbar.so\n");
     50   crazy_library_close(library);
     51 
     52   crazy_context_destroy(context);
     53 
     54   return 0;
     55 }