VM_Magic.setIntAtOffset(buffer, index, MACHINE_TYPE_RECORD);        index += SIZE_OF_INT;
VM_Magic.setIntAtOffset(buffer, index, MACHINE_TYPE_RECORD);        index = index.add(BYTES_IN_INT);
  static private void writeMachineType(String machine_type)  {    int index = 0;    // don't think we need this!    //    machine_type = wordAlignedString(machine_type);    byte[] buffer = new byte[machine_type.length()+8];    // write record format number    VM_Magic.setIntAtOffset(buffer, index, MACHINE_TYPE_RECORD);        index += SIZE_OF_INT;    index = writeStringToBuffer(buffer, index, machine_type.getBytes());    // write buffer to file    writeHeaderFileOutputStream(buffer, index);  }