mdb dcmd command

$r
::regs
Display current register values

$c
::stack
$C
Print current stack trace ($C:with frame pointers).
addr[,b]
::dump [-g sz] [-e]
Dump at least b bytes starting
at address addr. -g sets the
group size; for 64-bit debugging,
-g 8 is useful.
addr::dis Disassemble text,