public static void emitMoveRegToField(VM_Assembler asm, int offset, byte reg) {
public static void emitMoveRegToField(VM_Assembler asm, Offset offset, byte reg) {
  public static void emitMoveRegToField(VM_Assembler asm, int offset, byte reg) {    asm.emitMOV_RegDisp_Reg(PROCESSOR_REGISTER,offset,reg);  }