Support debugger inspection of locals in optimized frames

src/frames.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 365 matching lines @@
   // Testers.
   virtual bool is_standard() const { return true; }
 
   // Accessors.
   inline Object* context() const;
 
   // Access the expressions in the stack frame including locals.
   inline Object* GetExpression(int index) const;
   inline void SetExpression(int index, Object* value);
   int ComputeExpressionsCount() const;
+  static Object* GetExpression(Address fp, int index);
 
   virtual void SetCallerFp(Address caller_fp);
 
   static StandardFrame* cast(StackFrame* frame) {
     ASSERT(frame->is_standard());
     return static_cast<StandardFrame*>(frame);
   }
 
  protected:
   explicit StandardFrame(StackFrameIterator* iterator)
       : StackFrame(iterator) { }
 
   virtual void ComputeCallerState(State* state) const;
 
   // Accessors.
   inline Address caller_fp() const;
   inline Address caller_pc() const;
 
   // Computes the address of the PC field in the standard frame given
   // by the provided frame pointer.
   static inline Address ComputePCAddress(Address fp);
 
   // Iterate over expression stack including stack handlers, locals,
   // and parts of the fixed part including context and code fields.
   void IterateExpressions(ObjectVisitor* v) const;
 
   // Returns the address of the n'th expression stack element.
   Address GetExpressionAddress(int n) const;
+  static Address GetExpressionAddress(Address fp, int n);
 
   // Determines if the n'th expression stack element is in a stack
   // handler or not. Requires traversing all handlers in this frame.
   bool IsExpressionInsideHandler(int n) const;
 
   // Determines if the standard frame for the given frame pointer is
   // an arguments adaptor frame.
   static inline bool IsArgumentsAdaptorFrame(Address fp);
 
   // Determines if the standard frame for the given frame pointer is a
@@ skipping 52 matching lines @@
     return GetNumberOfIncomingArguments();
   }
 
   // Check if this frame is a constructor frame invoked through 'new'.
   bool IsConstructor() const;
 
   // Check if this frame has "adapted" arguments in the sense that the
   // actual passed arguments are available in an arguments adaptor
   // frame below it on the stack.
   inline bool has_adapted_arguments() const;
+  int GetArgumentsLength() const;
 
   // Garbage collection support.
   virtual void Iterate(ObjectVisitor* v) const;
 
   // Printing support.
   virtual void Print(StringStream* accumulator,
                      PrintMode mode,
                      int index) const;
 
   // Determine the code for the frame.
   virtual Code* unchecked_code() const;
 
+  // Returns the levels of inlining for this frame.
+  virtual int GetInlineCount() { return 1; }
+
   // Return a list with JSFunctions of this frame.
   virtual void GetFunctions(List<JSFunction*>* functions);
 
   // Build a list with summaries for this frame including all inlined frames.
   virtual void Summarize(List<FrameSummary>* frames);
 
   static JavaScriptFrame* cast(StackFrame* frame) {
     ASSERT(frame->is_java_script());
     return static_cast<JavaScriptFrame*>(frame);
   }
@@ skipping 18 matching lines @@
 };
 
 
 class OptimizedFrame : public JavaScriptFrame {
  public:
   virtual Type type() const { return OPTIMIZED; }
 
   // GC support.
   virtual void Iterate(ObjectVisitor* v) const;
 
+  virtual int GetInlineCount();
+
   // Return a list with JSFunctions of this frame.
   // The functions are ordered bottom-to-top (i.e. functions.last()
   // is the top-most activation)
   virtual void GetFunctions(List<JSFunction*>* functions);
 
   virtual void Summarize(List<FrameSummary>* frames);
 
   DeoptimizationInputData* GetDeoptimizationData(int* deopt_index);
 
  protected:
@@ skipping 315 matching lines @@
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap();
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_