int value = VM_Interface.readAvailableBitsWord(object);
VM_Word value = VM_Interface.readAvailableBitsWord(object);
  static void makeUnlogged(VM_Address object)    throws VM_PragmaUninterruptible, VM_PragmaInline {    int value = VM_Interface.readAvailableBitsWord(object);    if (VM_Interface.VerifyAssertions)      VM_Interface._assert((value & LOGGING_MASK) == LOGGED);    VM_Interface.writeAvailableBitsWord(object, value | UNLOGGED);  }