Create build structure for X64.

src/codegen.h

 // Copyright 2006-2008 the V8 project authors. 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
@@ skipping 58 matching lines @@
 //   CodeForFunctionPosition
 //   CodeForReturnPosition
 //   CodeForStatementPosition
 //   CodeForSourcePosition
 
 
 // Mode to overwrite BinaryExpression values.
 enum OverwriteMode { NO_OVERWRITE, OVERWRITE_LEFT, OVERWRITE_RIGHT };
 
 
-#ifdef ARM
+#ifdef V8_ARCH_ARM

[Mads Ager (chromium), 2009/04/29 12:27:24]

You need to update the other build systems as well in order not to break builds.
 You need to make sure that V8_ARCH_ARM is defined instead of ARM.  You need to
do this in visual studio project, xcode project and the v8.gyp file.

[Lasse Reichstein, 2009/04/29 13:05:41]

Attempted done. No guarantees on the XCode project file. It's not made for hand
editing.

 #include "arm/codegen-arm.h"
-#else
+#endif
+
+#ifdef V8_ARCH_X64
+#include "x64/codegen-x64.h"
+#endif
+
+#ifdef V8_ARCH_IA32
 #include "ia32/codegen-ia32.h"
 #endif
 
 namespace v8 { namespace internal {
 
 
 // Use lazy compilation; defaults to true.
 // NOTE: Do not remove non-lazy compilation until we can properly
 //       install extensions with lazy compilation enabled. At the
 //       moment, this doesn't work for the extensions in Google3,
@@ skipping 218 matching lines @@
     PrintF("ArgumentsAccessStub (type %d)\n", type_);
   }
 #endif
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_