int offset = VM_Entrypoints.vpStatusField.getOffset();
Offset offset = VM_Entrypoints.vpStatusField.getOffset();
  public boolean unblockIfBlockedInC () {    int newState, oldState;    boolean result = true;    int offset = VM_Entrypoints.vpStatusField.getOffset();    do {      oldState = VM_Magic.prepareInt(this, offset);      if (oldState != BLOCKED_IN_NATIVE) {        result = false;        break;      }      newState = IN_NATIVE;    } while (!(VM_Magic.attemptInt(this, offset, oldState, newState)));    return result;  }