--- old/src/cpu/x86/vm/stubRoutines_x86_64.hpp	2015-10-08 22:15:32.267671809 +0200
+++ new/src/cpu/x86/vm/stubRoutines_x86_64.hpp	2015-10-08 22:15:32.218672979 +0200
@@ -43,6 +43,7 @@
   static address _get_previous_fp_entry;
   static address _get_previous_sp_entry;
 
+  static address _shenandoah_wb;
   static address _f2i_fixup;
   static address _f2l_fixup;
   static address _d2i_fixup;
@@ -65,6 +66,11 @@
     return _get_previous_sp_entry;
   }
 
+  static address shenandoah_wb()
+  {
+    return _shenandoah_wb;
+  }
+
   static address f2i_fixup()
   {
     return _f2i_fixup;