} else if (frameLength == PAYLOAD_LONG.toLong()) {
      frameLength = source.readLong()
      if (frameLength < 0L) {
        throw ProtocolException(
          "Frame length 0x${frameLength.toHexString()} > 0x7FFFFFFFFFFFFFFF",
        )
      }
    }

    if (isControlFrame && frameLength > PAYLOAD_BYTE_MAX) {
      throw ProtocolException("Control frame must be less than ${PAYLOAD_BYTE_MAX}B.")
    }

	MOV	$0xffffffff00000000, X5	// MOV	$-4294967296, X5		// 9302f0ff93920202
	MOV	$0x1ffffffff0000000, X5	// MOV	$2305843008945258496, X5	// 9302f0ff9392f20193d23200
	MOV	$0x7fffffffffffffff, X5 // MOV	$9223372036854775807, X5	// 9302f0ff93d21200

	// Converted to load of symbol (AUIPC + LD)
	MOV	$0x80000001, X5		// MOV	$2147483649, X5			// 9702000083b20200