First draft of the sh4 port

src/sh4/lithium-gap-resolver-sh4.cc

Index: src/sh4/lithium-gap-resolver-sh4.cc
diff --git a/src/ia32/frames-ia32.cc b/src/sh4/lithium-gap-resolver-sh4.cc
similarity index 66%
copy from src/ia32/frames-ia32.cc
copy to src/sh4/lithium-gap-resolver-sh4.cc
index dd44f0ee5ff12dc7de0df1a33a544e6c19723934..1fd554ee05fcd4e9feeb05b5fef8f697ab5e7cd0 100644
--- a/src/ia32/frames-ia32.cc
+++ b/src/sh4/lithium-gap-resolver-sh4.cc
@@ -1,4 +1,4 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2011-2012 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:
@@ -27,19 +27,51 @@
 
 #include "v8.h"
 
-#if defined(V8_TARGET_ARCH_IA32)
-
-#include "frames-inl.h"
+#include "sh4/lithium-gap-resolver-sh4.h"
+#include "sh4/lithium-codegen-sh4.h"
 
 namespace v8 {
 namespace internal {
 
+static const Register kSavedValueRegister = { 9 };
+
+LGapResolver::LGapResolver(LCodeGen* owner)
+    : cgen_(owner), moves_(32, owner->zone()), root_index_(0), in_cycle_(false),
+      saved_destination_(NULL) { }
+
 
-Address ExitFrame::ComputeStackPointer(Address fp) {
-  return Memory::Address_at(fp + ExitFrameConstants::kSPOffset);
+void LGapResolver::Resolve(LParallelMove* parallel_move) {
+  UNIMPLEMENTED();
 }
 
 
-} }  // namespace v8::internal
+void LGapResolver::BuildInitialMoveList(LParallelMove* parallel_move) {
+  UNIMPLEMENTED();
+}
+
+
+void LGapResolver::PerformMove(int index) {
+  UNIMPLEMENTED();
+}
+
+
+void LGapResolver::Verify() {
+  UNIMPLEMENTED();
+}
 
-#endif  // V8_TARGET_ARCH_IA32
+void LGapResolver::BreakCycle(int index) {
+  UNIMPLEMENTED();
+}
+
+
+void LGapResolver::RestoreValue() {
+  UNIMPLEMENTED();
+}
+
+
+void LGapResolver::EmitMove(int index) {
+  UNIMPLEMENTED();
+}
+
+
+} }  // namespace v8::internal