Cleanup the way the debugger stores live registers when entering at a break...

src/codegen.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 542 matching lines @@
     } else {
       PrintF("\n");
     }
   }
 #endif
 };
 
 
 class CEntryStub : public CodeStub {
  public:
-  explicit CEntryStub(int result_size,
-                      ExitFrame::Mode mode = ExitFrame::MODE_NORMAL)
-      : result_size_(result_size), mode_(mode) { }
+  explicit CEntryStub(int result_size) : result_size_(result_size) { }
 
   void Generate(MacroAssembler* masm);
 
  private:
   void GenerateCore(MacroAssembler* masm,
                     Label* throw_normal_exception,
                     Label* throw_termination_exception,
                     Label* throw_out_of_memory_exception,
                     bool do_gc,
                     bool always_allocate_scope,
                     int alignment_skew = 0);
   void GenerateThrowTOS(MacroAssembler* masm);
   void GenerateThrowUncatchable(MacroAssembler* masm,
                                 UncatchableExceptionType type);
 
   // Number of pointers/values returned.
   const int result_size_;
-  const ExitFrame::Mode mode_;
 
   // Minor key encoding
-  class ExitFrameModeBits: public BitField<ExitFrame::Mode, 0, 1> {};
   class IndirectResultBits: public BitField<bool, 1, 1> {};
 
   Major MajorKey() { return CEntry; }
   // Minor key must differ if different result_size_ values means different
   // code is generated.
   int MinorKey();
 
   const char* GetName() { return "CEntryStub"; }
 };
 
@@ skipping 303 matching lines @@
   StringCharFromCodeGenerator char_from_code_generator_;
 
   DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CODEGEN_H_