if (VM.VerifyAssertions) VM.assert((1 << pagesizeLog) == pagesize);
if (VM.VerifyAssertions) VM._assert((1 << pagesizeLog) == pagesize);
  public static int getPagesize() {    VM_BootRecord bootRecord = VM_BootRecord.the_boot_record;    if (pagesize == -1) {      pagesize = VM.sysCall0(bootRecord.sysGetPageSizeIP);      pagesizeLog = -1;      int temp = pagesize;      while (temp > 0) {        temp >>>= 1;        pagesizeLog++;      }      if (VM.VerifyAssertions) VM.assert((1 << pagesizeLog) == pagesize);    }    return pagesize;  }  static int getPagesizeLog() {    if (pagesize == -1)       getPagesize();    return pagesizeLog;  }