Endian changes, support 64bit big endian

src/frames.h

Index: src/frames.h
diff --git a/src/frames.h b/src/frames.h
index f7e60aef33b1b0fd67342bfa66ea78a5e8bb89b7..03d53dd6a1cbdf0990205760bc398bb96b4416b1 100644
--- a/src/frames.h
+++ b/src/frames.h
@@ -71,6 +71,11 @@ class StackHandlerConstants : public AllStatic {
   static const int kNextOffset     = 0 * kPointerSize;
   static const int kCodeOffset     = 1 * kPointerSize;
   static const int kStateOffset    = 2 * kPointerSize;
+#if V8_TARGET_LITTLE_ENDIAN || !V8_HOST_ARCH_64_BIT
+  static const int kStateIntOffset = kStateOffset;
+#else
+  static const int kStateIntOffset = kStateOffset + kIntSize;
+#endif
   static const int kContextOffset  = 3 * kPointerSize;
   static const int kFPOffset       = 4 * kPointerSize;