win: Support reading process info cross-bitness

util/util.gyp

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 113 matching lines @@
         'stdlib/strlcpy.cc',
         'stdlib/strlcpy.h',
         'stdlib/strnlen.cc',
         'stdlib/strnlen.h',
         'synchronization/semaphore_mac.cc',
         'synchronization/semaphore_posix.cc',
         'synchronization/semaphore_win.cc',
         'synchronization/semaphore.h',
         'win/process_info.cc',
         'win/process_info.h',
+        'win/process_structs.h',
         'win/scoped_handle.cc',
         'win/scoped_handle.h',
         'win/time.cc',
         'win/time.h',
       ],
       'conditions': [
         ['OS=="mac"', {
           'conditions': [
             ['GENERATOR=="ninja"', {
               # ninja’s rules can’t deal with sources that have paths relative
@@ skipping 191 matching lines @@
       'type': 'executable',
       'sources': [
         'test/multiprocess_exec_test_child.cc',
       ],
     },
   ],
   'conditions': [
     ['OS=="win"', {
       'targets': [
         {
-          'target_name': 'util_test_process_info_test_child',
+          'target_name': 'util_test_process_info_test_child_x64',

[Mark Mentovai, 2015/03/09 22:44:44]

Do you want to add a TargetMachine: 17 definition here so that this _x64
executable is independent of the bitness chosen by common.gypi? If not, the
target name is a misnomer.

[scottmg, 2015/03/09 23:23:57]

Good point, done. Needed an msvs_configuration_platform too.

           'type': 'executable',
           'sources': [
             'win/process_info_test_child.cc',
           ],
           # Set an unusually high load address to make sure that the main
           # executable still appears as the first element in
           # ProcessInfo::Modules().
           'msvs_settings': {
             'VCLinkerTool': {
               'AdditionalOptions': [
                 '/BASE:0x78000000',
                 '/FIXED',
               ],
             },
           },
         },
+        {
+          # Same as above, but explicitly x86 to test 64->32 access.
+          'target_name': 'util_test_process_info_test_child_x86',
+          'type': 'executable',
+          'sources': [
+            'win/process_info_test_child.cc',
+          ],
+          'msvs_configuration_platform': 'x86',
+          # Set an unusually high load address to make sure that the main
+          # executable still appears as the first element in
+          # ProcessInfo::Modules().
+          'msvs_settings': {
+            'VCLinkerTool': {
+              'AdditionalOptions': [
+                '/BASE:0x78000000',
+                '/FIXED',
+              ],
+              'TargetMachine': '1',  # x86.
+            },
+          },
+        },
       ]
     }],
   ],
 }