[Interpreter] Add support for parameter variables.

src/frames.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_FRAMES_H_
 #define V8_FRAMES_H_
 
 #include "src/allocation.h"
 #include "src/handles.h"
 #include "src/safepoint-table.h"
@@ skipping 156 matching lines @@
   static const int kAllocationSiteOffset =
       StandardFrameConstants::kExpressionsOffset - 1 * kPointerSize;
   static const int kCodeOffset =
       StandardFrameConstants::kExpressionsOffset - 0 * kPointerSize;
 
   static const int kFrameSize =
       StandardFrameConstants::kFixedFrameSize + 5 * kPointerSize;
 };
 
 
+class InterpreterFrameConstants : public AllStatic {
+ public:
+  // Register file pointer relative.
+  static const int kLastParamFromRegisterPointer =
+      StandardFrameConstants::kFixedFrameSize + kPointerSize;
+};
+

[Michael Starzinger, 2015/08/26 13:44:36]

nit: Two empty newlines.

[rmcilroy, 2015/08/27 09:54:39]

Done.

 // Abstract base class for all stack frames.
 class StackFrame BASE_EMBEDDED {
  public:
 #define DECLARE_TYPE(type, ignore) type,
   enum Type {
     NONE = 0,
     STACK_FRAME_TYPE_LIST(DECLARE_TYPE)
     NUMBER_OF_TYPES,
     // Used by FrameScope to indicate that the stack frame is constructed
     // manually and the FrameScope does not need to emit code.
@@ skipping 751 matching lines @@
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone);
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_