HP-UX Reference (11i v3 07/02) - 1M System Administration Commands A-M (vol 3)

k
kwdb(1M) kwdb(1M)
target nddb -h comm_server -t ethernet_mac_address
Debug an HP-UX 11.0 or earlier kernel using
nddb compatibility mode. comm_server is the commun-
ication server. ethernet_mac_address is the Ethernet LAN MAC address of the LAN card used for
debugger communications in the target system.
target pa_kern comm_server [:47001]
Set up LAN-based debugging on the kwdbd server on the comm_server for PA-RISC architecture.
target sub name_of_sub[:47001]
Set up debugging for a Superdome, Keystone, or ORCA system using SUB/SINC. name_of_sub is the
console name of the system.
target udp ip-address
Set up UDP-based debugging. ip-address is the IP address of the target system.
target crash dir
Specify the target crash directory, dir, which is to be debugged. The
target crash command is
not required if
kwdb is invoked with -q4
option. The attach command is not used with this target.
target devmem
kwdb
runs on the target system and debugs live memory using /dev/mem or /dev/kmem. The
target devmem command is not required if kwdb is invoked with the /dev/mem or /dev/kmem
argument. The attach command is not used with this target system.
attach 0 [target_id]
Attach the remote target system. If target is connected through the kwdbd or nddbcs communica-
tion server, target_id is the Ethernet MAC address of target LAN. If communication is through
SUB/SINC, target_id is the partition name.
Breakpoints
Breakpoints are used to stop execution at a particular location in a program. This section explains com-
mands used for breakpoints.
break [file:]line Set the breakpoint at the specified line number line in file.
break [file:]func Set the breakpoint at the function func in file.
break *addr Set the breakpoint at the specified address addr.
break Set breakpoint at next instruction.
break [location] if expr
Break conditionally on a nonzero expr at the next instruction (or location specified
as line or address or function).
clear Delete breakpoints at next instruction.
clear [file:] func Delete breakpoints at entry to the function at func.
clear [file:] line Delete breakpoints on source line.
commands n [silent] command-list end
Execute command-list every time breakpoint n is reached.
cond n [expr] Make a new conditional expression on breakpoint n. Make an unconditional expres-
sion if expr is omitted.
delete [n] Delete breakpoints or the breakpoint n.
disable [n] Disable breakpoints or the breakpoint n.
enable [n] Enable breakpoints or the breakpoint n.
ignore n count Ignore breakpoint at n, count number of times.
info break Show breakpoints and watchpoints.
tbreak [args] Specify a temporary breakpoint. Similar to the break command except that the
breakpoint is temporary. When the breakpoint is reached, the breakpoint is dis-
abled. args are accepted as in the break command.
watch *addr Set the watchpoint at address specified by addr which is the default. Four bytes
will be watched.
HP-UX 11i Version 3: February 2007 − 3 − Hewlett-Packard Company 411