Fix 'step in' after live edit stack manipulation

src/ia32/debug-ia32.cc

Index: src/ia32/debug-ia32.cc
diff --git a/src/ia32/debug-ia32.cc b/src/ia32/debug-ia32.cc
index 9b558bd90b5af27d8a97cbe085199916fad486a1..dfa663420016c2a7e9202d8c1bd2813c89928031 100644
--- a/src/ia32/debug-ia32.cc
+++ b/src/ia32/debug-ia32.cc
@@ -265,6 +265,10 @@ void Debug::GeneratePlainReturnLiveEdit(MacroAssembler* masm) {
 //   -- context
 //   -- frame base
 void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
+  ExternalReference restarter_frame_function_slot =
+      ExternalReference(Debug_Address::RestarterFrameFunctionPointer());
+  __ mov(Operand::StaticVariable(restarter_frame_function_slot), Immediate(0));
+
   // We do not know our frame height, but set esp based on ebp.
   __ lea(esp, Operand(ebp, -4 * kPointerSize));
 
@@ -288,8 +292,10 @@ void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) {
 #undef __
 
 
-void Debug::SetUpFrameDropperFrame(StackFrame* bottom_js_frame,
-                                   Handle<Code> code) {
+// TODO(LiveEdit): consider making it platform-independent.
+// TODO(LiveEdit): use more named constants instead of numbers.
+Object** Debug::SetUpFrameDropperFrame(StackFrame* bottom_js_frame,
+                                       Handle<Code> code) {
   ASSERT(bottom_js_frame->is_java_script());
 
   Address fp = bottom_js_frame->fp();
@@ -298,7 +304,10 @@ void Debug::SetUpFrameDropperFrame(StackFrame* bottom_js_frame,
 
   Memory::Object_at(fp - 3 * kPointerSize) = *code;
   Memory::Object_at(fp - 2 * kPointerSize) = Smi::FromInt(StackFrame::INTERNAL);
+
+  return reinterpret_cast<Object**>(&Memory::Object_at(fp - 4 * kPointerSize));
 }
+
 const int Debug::kFrameDropperFrameSize = 5;