RBP              1515 nanojit/NativeX64.cpp                         (GpRegs & ~(1<<RSP | 1<<RBP | 1<<RSI | 1<<RDI)) :
RBP              1708 nanojit/NativeX64.cpp         POPR(RBP);
RBP              1718 nanojit/NativeX64.cpp         a.free = 0xffffffff & ~(1<<RSP | 1<<RBP);
RBP              1790 nanojit/NativeX64.cpp         MR(RSP, RBP);