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

src/builtins.h

 // Copyright 2006-2008 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 149 matching lines @@
     cfunction_count
   };
 
   enum JavaScript {
 #define DEF_ENUM(name, ignore) name,
     BUILTINS_LIST_JS(DEF_ENUM)
 #undef DEF_ENUM
     id_count
   };
 
-  static bool IsConstructCall(Address pc);
-  static bool IsArgumentsAdaptorCall(Address pc);
-
   static Code* builtin(Name name) {
     // Code::cast cannot be used here since we access builtins
     // during the marking phase of mark sweep. See IC::Clear.
     return reinterpret_cast<Code*>(builtins_[name]);
   }
 
   static Address builtin_address(Name name) {
     return reinterpret_cast<Address>(&builtins_[name]);
   }
 
@@ skipping 16 matching lines @@
   static Address c_functions_[cfunction_count];
 
   // Note: These are always Code objects, but to conform with
   // IterateBuiltins() above which assumes Object**'s for the callback
   // function f, we use an Object* array here.
   static Object* builtins_[builtin_count];
   static const char* names_[builtin_count];
   static const char* javascript_names_[id_count];
   static int javascript_argc_[id_count];
 
-  // The offset from the beginning of the JSConstructCall builtin code
-  // object to the return address after the call. Used for determining
-  // if a call is a constructor invocation.
-  static int construct_call_pc_offset_;
-  static int arguments_adaptor_call_pc_offset_;
-
   static void Generate_Adaptor(MacroAssembler* masm, CFunctionId id);
   static void Generate_JSConstructCall(MacroAssembler* masm);
   static void Generate_JSEntryTrampoline(MacroAssembler* masm);
   static void Generate_JSConstructEntryTrampoline(MacroAssembler* masm);
   static void Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm);
 
   static void Generate_FunctionCall(MacroAssembler* masm);
   static void Generate_FunctionApply(MacroAssembler* masm);
 
   static void Generate_LoadIC_DebugBreak(MacroAssembler* masm);
   static void Generate_StoreIC_DebugBreak(MacroAssembler* masm);
   static void Generate_KeyedLoadIC_DebugBreak(MacroAssembler* masm);
   static void Generate_KeyedStoreIC_DebugBreak(MacroAssembler* masm);
   static void Generate_ConstructCall_DebugBreak(MacroAssembler* masm);
   static void Generate_Return_DebugBreak(MacroAssembler* masm);
   static void Generate_Return_DebugBreakEntry(MacroAssembler* masm);
   static void Generate_StubNoRegisters_DebugBreak(MacroAssembler* masm);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_BUILTINS_H_