Add X32 port into V8

src/x64/frames-x64.h

Index: src/x64/frames-x64.h
===================================================================
--- src/x64/frames-x64.h	(revision 15486)
+++ src/x64/frames-x64.h	(working copy)
@@ -55,11 +55,20 @@
   static const int kXMMRegisterSize = 16;
   static const int kXMMRegistersBlockSize =
       kXMMRegisterSize * kCalleeSaveXMMRegisters;
+#ifndef V8_TARGET_ARCH_X32
   static const int kCallerFPOffset =
       -10 * kPointerSize - kXMMRegistersBlockSize;
 #else
+  static const int kCallerFPOffset =
+      -3 * kPointerSize + -7 * kHWRegSize - kXMMRegistersBlockSize;
+#endif
+#else
+#ifndef V8_TARGET_ARCH_X32
   static const int kCallerFPOffset      = -8 * kPointerSize;
+#else
+  static const int kCallerFPOffset      = -3 * kPointerSize + -5 * kHWRegSize;
 #endif
+#endif
   static const int kArgvOffset          = 6 * kPointerSize;
 };
 
@@ -70,11 +79,19 @@
   static const int kSPOffset        = -1 * kPointerSize;
 
   static const int kCallerFPOffset  = +0 * kPointerSize;
+#ifndef V8_TARGET_ARCH_X32
   static const int kCallerPCOffset  = +1 * kPointerSize;
 
   // FP-relative displacement of the caller's SP.  It points just
   // below the saved PC.
   static const int kCallerSPDisplacement = +2 * kPointerSize;
+#else
+  static const int kCallerPCOffset  = +1 * kHWRegSize;
+
+  // FP-relative displacement of the caller's SP.  It points just
+  // below the saved PC.
+  static const int kCallerSPDisplacement = +2 * kHWRegSize;
+#endif
 };
 
 
@@ -82,7 +99,11 @@
  public:
   // FP-relative.
   static const int kLocal0Offset = StandardFrameConstants::kExpressionsOffset;
+#ifndef V8_TARGET_ARCH_X32
   static const int kLastParameterOffset = +2 * kPointerSize;
+#else
+  static const int kLastParameterOffset = +2 * kHWRegSize;
+#endif
   static const int kFunctionOffset = StandardFrameConstants::kMarkerOffset;
 
   // Caller SP-relative.