*** old/src/share/vm/classfile/javaClasses.hpp	Fri Oct 17 13:54:44 2014
--- new/src/share/vm/classfile/javaClasses.hpp	Fri Oct 17 13:54:44 2014

*** 241,250 ****
--- 241,251 ----
    static int _signers_offset;
    static int _class_loader_offset;
    static int _component_mirror_offset;
  
    static bool offsets_computed;
+   static int _classData_offset;
    static int classRedefinedCount_offset;
  
    static GrowableArray<Klass*>* _fixup_mirror_list;
  
    static void set_init_lock(oop java_class, oop init_lock);

*** 283,292 ****
--- 284,296 ----
    static Klass* array_klass(oop java_class);
    static void set_array_klass(oop java_class, Klass* klass);
    // compiler support for class operations
    static int klass_offset_in_bytes()                { return _klass_offset; }
    static int array_klass_offset_in_bytes()          { return _array_klass_offset; }
+ 
+   static oop classData(oop obj);
+ 
    // Support for classRedefinedCount field
    static int classRedefinedCount(oop the_class_mirror);
    static void set_classRedefinedCount(oop the_class_mirror, int value);
  
    // Support for embedded per-class oops

*** 313,322 ****
--- 317,345 ----
    friend class JavaClasses;
    friend class InstanceKlass;   // verification code accesses offsets
    friend class ClassFileParser; // access to number_of_fake_fields
  };
  
+ /**
+  * java.lang.Class$ClassData
+  */
+ class java_lang_Class_ClassData : AllStatic {
+   friend class JavaClasses;
+ 
+  private:
+   static int _elementData_offset;
+   static int _size_offset;
+ 
+   static void compute_offsets();
+ 
+  public:
+   static bool is_instance(oop obj);
+   static oop memberNameTable(oop obj);
+   static objArrayOop elementData(oop obj);
+   static int size(oop obj);
+ };
+ 
  // Interface to java.lang.Thread objects
  
  class java_lang_Thread : AllStatic {
   private:
    // Note that for this class the layout changed between JDK1.2 and JDK1.3,