diff -r 6c147e7e4605 -r 45b68a4063c2 src/cpu/mips/vm/assembler_mips.hpp
--- a/src/cpu/mips/vm/assembler_mips.hpp	Tue Jun 28 15:59:50 2016 +0800
+++ b/src/cpu/mips/vm/assembler_mips.hpp	Tue Jun 28 16:34:47 2016 +0800
@@ -1923,6 +1923,8 @@
 #undef VIRTUAL
   void atomic_inc32(address counter_addr, int inc, Register tmp_reg1, Register tmp_reg2);
 
+  void fast_lock(Register obj, Register box, Register tmp, Register scr);
+  void fast_unlock(Register obj, Register box, Register tmp);
 };
 
 /**