UnknownReg        131 nanojit/NativeARM.h UnknownReg = 32,
UnknownReg        162 nanojit/NativePPC.h UnknownReg = 127,
UnknownReg        166 nanojit/NativeSparc.h UnknownReg = 30
UnknownReg        102 nanojit/NativeX64.h UnknownReg = 32,
UnknownReg        144 nanojit/Nativei386.h UnknownReg = 17