TestCoverage(38, TestType.configCache, Os.WINDOWS, JvmCategory.MAX_VERSION),
                TestCoverage(39, TestType.configCache, Os.LINUX, JvmCategory.MAX_VERSION, DEFAULT_LINUX_FUNCTIONAL_TEST_BUCKET_SIZE, arch = Arch.AARCH64),

       * which will have an efficient native implementation in JDK 9.
       *
       */
      String arch = System.getProperty("os.arch");
      if ("amd64".equals(arch) || "aarch64".equals(arch)) {
        theGetter =
            ByteOrder.nativeOrder().equals(ByteOrder.LITTLE_ENDIAN)
                ? UnsafeByteArray.UNSAFE_LITTLE_ENDIAN
                : UnsafeByteArray.UNSAFE_BIG_ENDIAN;
      }

	default:
		return 0, errors.New("invalid arrangement in ARM64 register list")
	}
	return (int64(curQ) & 1 << 30) | (int64(curSize&3) << 10), nil
}

// ARM64RegisterListOffset generates offset encoding according to AArch64 specification.
func ARM64RegisterListOffset(firstReg, regCnt int, arrangement int64) (int64, error) {
	offset := int64(firstReg)
	switch regCnt {
	case 1:
		offset |= 0x7 << 12
	case 2:
		offset |= 0xa << 12