Yielding the following /dev/counter0 memory layout:
+------------+-----------------+------------+-------------------+
| Byte 0 | Byte 1 - Byte 8 | Byte 9 | Byte 10 - Byte 17 |
+------------+-----------------+------------+-------------------+
| Boundary 0 | Count 0 | Boundary 1 | Count 1 |
+------------+-----------------+------------+-------------------+