Watchpoint Length Specifier Differences Between adb and MDB

The watchpoint length specifier syntax recognized by MDB is different from the syntax described in adb. In particular, the adb watchpoint commands :w, :a, and :p allow an integer length in bytes to be inserted between the colon and the command character. In MDB, the count should be specified following the initial address as a repeat count. Stated simply, these adb commands:

123:456w
123:456a
123:456p

are specified in MDB as:

123,456:w
123,456:a
123,456:p

The MDB ::wp dcmd provides more complete facilities for creating user process watchpoints. Similarly, the legacy kadb length modifier command $l is not supported. Therefore, the watchpoint size should be specified to each ::wp command used in kmdb.