*** old/src/cpu/x86/vm/assembler_x86.hpp	Mon Mar 24 17:32:14 2014
--- new/src/cpu/x86/vm/assembler_x86.hpp	Mon Mar 24 17:32:14 2014

*** 498,508 ****
--- 498,510 ----
      REX_WRB    = 0x4D,
      REX_WRX    = 0x4E,
      REX_WRXB   = 0x4F,
  
      VEX_3bytes = 0xC4,
!     VEX_2bytes = 0xC5,
+ 
+     REP        = 0xf3
    };
  
    enum VexPrefix {
      VEX_B = 0x20,
      VEX_X = 0x40,