--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/code/relocInfo_ext.hpp	Mon Dec 19 12:39:01 2016 -0500
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_CODE_RELOCINFO_EXT_HPP
+#define SHARE_VM_CODE_RELOCINFO_EXT_HPP
+
+// symbolic_Relocation allows to anotate some addresses in the generated code.
+//
+// This class was initially defined using the last unused relocType. The
+// new version tries to limit the impact on open source code changes.
+//
+// Without compiled code support, symbolic_Relocation need not be a real
+// relocation. To avoid using the last unused relocType, the
+// symbolic_Relocation::spec(<any symbolic type>) has been replaced
+// by additional methods using directly the symbolic type.
+//
+// Note: the order of the arguments in some methods had to reversed
+// to avoid confusion between the relocType enum and the
+// symbolic_reference enum.
+class symbolic_Relocation : AllStatic {
+
+ public:
+  enum symbolic_reference {
+    card_table_reference,
+    eden_top_reference,
+    heap_end_reference,
+    polling_page_reference,
+    mark_bits_reference,
+    mark_mask_reference,
+    oop_bits_reference,
+    oop_mask_reference,
+    debug_string_reference,
+    last_symbolic_reference
+  };
+
+  // get the new value for a given symbolic type
+  static address symbolic_value(symbolic_reference t);
+};
+
+#endif // SHARE_VM_CODE_RELOCINFO_EXT_HPP