diff -r 0861193d358a -r eaf3742822ec src/share/vm/classfile/javaClasses.hpp
--- a/src/share/vm/classfile/javaClasses.hpp	Fri May 31 10:27:12 2013 +0100
+++ b/src/share/vm/classfile/javaClasses.hpp	Mon Jun 17 11:17:49 2013 +0100
@@ -208,7 +208,10 @@
   macro(java_lang_Class, klass,                  intptr_signature,  false) \
   macro(java_lang_Class, array_klass,            intptr_signature,  false) \
   macro(java_lang_Class, oop_size,               int_signature,     false) \
-  macro(java_lang_Class, static_oop_field_count, int_signature,     false)
+  macro(java_lang_Class, static_oop_field_count, int_signature,     false) \
+  macro(java_lang_Class, protection_domain,      object_signature,  false) \
+  macro(java_lang_Class, init_lock,              object_signature,  false) \
+  macro(java_lang_Class, signers,                object_signature,  false)
 
 class java_lang_Class : AllStatic {
   friend class VMStructs;
@@ -222,15 +225,20 @@
   static int _oop_size_offset;
   static int _static_oop_field_count_offset;
 
+  static int _protection_domain_offset;
+  static int _init_lock_offset;
+  static int _signers_offset;
+
   static bool offsets_computed;
   static int classRedefinedCount_offset;
   static GrowableArray<Klass*>* _fixup_mirror_list;
 
+  static void set_init_lock(oop java_class, oop init_lock);
  public:
   static void compute_offsets();
 
   // Instance creation
-  static oop  create_mirror(KlassHandle k, TRAPS);
+  static oop  create_mirror(KlassHandle k, Handle protection_domain, TRAPS);
   static void fixup_mirror(KlassHandle k, TRAPS);
   static oop  create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
   // Conversion
@@ -262,6 +270,13 @@
   static int classRedefinedCount(oop the_class_mirror);
   static void set_classRedefinedCount(oop the_class_mirror, int value);
 
+  // Support for embedded per-class oops
+  static oop  protection_domain(oop java_class);
+  static void set_protection_domain(oop java_class, oop protection_domain);
+  static oop  init_lock(oop java_class);
+  static objArrayOop  signers(oop java_class);
+  static void set_signers(oop java_class, objArrayOop signers);
+
   static int oop_size(oop java_class);
   static void set_oop_size(oop java_class, int size);
   static int static_oop_field_count(oop java_class);