Introduce a special kind of frames for construct frames, e.g....

src/macro-assembler-ia32.cc

Index: src/macro-assembler-ia32.cc
===================================================================
--- src/macro-assembler-ia32.cc	(revision 483)
+++ src/macro-assembler-ia32.cc	(working copy)
@@ -312,9 +312,7 @@
 }
 
 
-void MacroAssembler::EnterInternalFrame() {
-  int type = StackFrame::INTERNAL;
-
+void MacroAssembler::EnterFrame(StackFrame::Type type) {
   push(ebp);
   mov(ebp, Operand(esp));
   push(esi);
@@ -323,9 +321,8 @@
 }
 
 
-void MacroAssembler::LeaveInternalFrame() {
+void MacroAssembler::LeaveFrame(StackFrame::Type type) {
   if (FLAG_debug_code) {
-    StackFrame::Type type = StackFrame::INTERNAL;
     cmp(Operand(ebp, StandardFrameConstants::kMarkerOffset),
         Immediate(Smi::FromInt(type)));
     Check(equal, "stack frame types must match");