Add custom implementation of NXGetArchInfoXXX to allow adding new arch.

src/common/mac/arch_utilities.h

+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// arch_utilities.h: Utilities for architecture introspection for Mac platform.
+
+#ifndef COMMON_MAC_ARCH_UTILITIES_H__
+#define COMMON_MAC_ARCH_UTILITIES_H__
+
+#include <mach-o/arch.h>
+
+namespace MacArchUtils {

[Ted Mielczarek, 2012/10/03 12:59:11]

Google style guide says namespace names are all lowercase with underscores
between words.

[qsr, 2012/10/03 15:56:29]

 Changed to google_breakpad

+
+// Custom implementation of |NXGetArchInfoFromName| and
+// |NXGetArchInfoFromCpuType| that handle newer CPU on older OSes.
+const NXArchInfo* BreakpadGetArchInfoFromName(const char* arch_name);
+const NXArchInfo* BreakpadGetArchInfoFromCpuType(cpu_type_t cpu_type,
+                                                 cpu_subtype_t cpu_subtype);
+
+}  // namespace MacArchUtils
+
+#endif  // COMMON_MAC_ARCH_UTILITIES_H__