public static int sysShmctl(int shmid, int command) { return 0; }
public static int sysShmctl(int shmid, int command) { return VM_SysCallMagic.sysShmctl(VM_BootRecord.the_boot_record.sysShmctlIP, shmid, command); }
  public static int sysShmctl(int shmid, int command) { return 0; }