Add X32 port into V8

src/code-stubs.h

 // Copyright 2012 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 372 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(RuntimeCallHelper);
 };
 
 } }  // namespace v8::internal
 
 #if V8_TARGET_ARCH_IA32
 #include "ia32/code-stubs-ia32.h"
 #elif V8_TARGET_ARCH_X64
 #include "x64/code-stubs-x64.h"
+#elif V8_TARGET_ARCH_X32
+#include "x32/code-stubs-x32.h"
 #elif V8_TARGET_ARCH_ARM
 #include "arm/code-stubs-arm.h"
 #elif V8_TARGET_ARCH_MIPS
 #include "mips/code-stubs-mips.h"
 #else
 #error Unsupported target architecture.
 #endif
 
 namespace v8 {
 namespace internal {
@@ skipping 1773 matching lines @@
   int MinorKey() { return 0; }
 
   void Generate(MacroAssembler* masm);
 
   DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_