diff -r f90c822e73f8 -r 2d8a650513c2 src/share/vm/compiler/disassemblerEnv.hpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/compiler/disassemblerEnv.hpp	Fri Apr 29 00:06:10 2016 +0800
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2016, Loongson Technology. 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.
+ *
+ */
+
+#ifdef USE_PRAGMA_IDENT_HDR
+#pragma ident "@(#)disassemblerEnv.hpp	1.14 05/11/18 15:21:38 JVM"
+#endif
+
+// Call-back interface for external disassembler
+class DisassemblerEnv {
+ public:
+  // printing
+  virtual void print_label(intptr_t value)   = 0;
+  virtual void print_raw(char* str)     = 0;
+  virtual void print(char* format, ...) = 0;
+  // helpers
+  virtual char* string_for_offset(intptr_t value) = 0;
+  virtual char* string_for_constant(unsigned char* pc, intptr_t value, int is_decimal) = 0;
+};
+