X64: Added support for "with" and "switch".

src/x64/frames-x64.cc

Index: src/x64/frames-x64.cc
diff --git a/src/x64/frames-x64.cc b/src/x64/frames-x64.cc
index f206be8e382e232b07336a5b439ce6c03233b6f0..fe224ad998823a58aee088bd9c43056904056e09 100644
--- a/src/x64/frames-x64.cc
+++ b/src/x64/frames-x64.cc
@@ -65,18 +65,14 @@ StackFrame::Type ExitFrame::GetStateForFramePointer(Address fp, State* state) {
 }
 
 int JavaScriptFrame::GetProvidedParametersCount() const {
-  UNIMPLEMENTED();
-  return 0;
-}
-
-byte* ArgumentsAdaptorFrame::GetCallerStackPointer() const {
-  UNIMPLEMENTED();
-  return NULL;
+  return ComputeParametersCount();
 }
 
 
 void ExitFrame::Iterate(ObjectVisitor* a) const {
-  UNIMPLEMENTED();
+  // Exit frames on X64 do not contain any pointers. The arguments
+  // are traversed as part of the expression stack of the calling
+  // frame.
 }
 
 byte* InternalFrame::GetCallerStackPointer() const {
@@ -86,8 +82,31 @@ byte* InternalFrame::GetCallerStackPointer() const {
 }
 
 byte* JavaScriptFrame::GetCallerStackPointer() const {
-  UNIMPLEMENTED();
-  return NULL;
+  int arguments;
+  if (Heap::gc_state() != Heap::NOT_IN_GC || disable_heap_access_) {
+    // The arguments for cooked frames are traversed as if they were
+    // expression stack elements of the calling frame. The reason for
+    // this rather strange decision is that we cannot access the
+    // function during mark-compact GCs when the stack is cooked.
+    // In fact accessing heap objects (like function->shared() below)
+    // at all during GC is problematic.
+    arguments = 0;
+  } else {
+    // Compute the number of arguments by getting the number of formal
+    // parameters of the function. We must remember to take the
+    // receiver into account (+1).
+    JSFunction* function = JSFunction::cast(this->function());
+    arguments = function->shared()->formal_parameter_count() + 1;
+  }
+  const int offset = StandardFrameConstants::kCallerSPOffset;
+  return fp() + offset + (arguments * kPointerSize);
+}
+
+
+byte* ArgumentsAdaptorFrame::GetCallerStackPointer() const {
+  const int arguments = Smi::cast(GetExpression(0))->value();
+  const int offset = StandardFrameConstants::kCallerSPOffset;
+  return fp() + offset + (arguments + 1) * kPointerSize;
 }