Kernel Extensions and Device Support Programming Concepts

Subcommands for the KDB Kernel Debugger and kdb Command

View a list of the KDB Kernel Debug Subcommands grouped by:

Alphabetical List of KDB Kernel Debug Program Subcommands

The following table shows the KDB Kernel Debug Program subcommands in alphabetical order:

Subcommand	Function	Task Category
ames	VMM address map entries	VMM
apt	VMM APT entries	VMM
asc	Display ascsi	SCSI
B	step on branch	Breakpoints/Steps
b	set/list break point(s)	Breakpoints/Steps
bt	set/list trace point(s)	Trace
btac	branch target	btac/BRAT
buffer	Display buffer	File System
c	clear break point	Breakpoints/Steps
ca	clear all break points	Breakpoints/Steps
cat	clear all trace points	Trace
cbtac	clear branch target	btac/BRAT
cdt	Display cdt	Basic
clk	Display complex lock	System Table
cpu	Switch to cpu	SMP
ct	clear trace point	Trace
ctx	switch to KDB context	Basic
cw	clear watch	Watch
d	display byte data	Dumps/Display/Decode
dbat	display dbats	bat/Block Address Translation
dc	display code	Dumps/Display/Decode
dcal	calc/conv a decimal expr	Calculator Converter
dd	display double word data	Dumps/Display/Decode
ddpb	display device byte	Dumps/Display/Decode
ddpd	display device double word	Dumps/Display/Decode
ddph	display device half word	Dumps/Display/Decode
ddpw	display device word	Dumps/Display/Decode
ddvb	display device byte	Dumps/Display/Decode
ddvd	display device double word	Dumps/Display/Decode
ddvh	display device half word	Dumps/Display/Decode
ddvw	display device word	Dumps/Display/Decode
debug	enable/disable debug	Miscellaneous
devsw	Display devsw table	System Table
devnode	Display devnode	File System
di	decode the hexadecimal instruction word	Dumps/Display/Decode
dp	display byte data	Dumps/Display/Decode
dpc	display code	Dumps/Display/Decode
dpd	display double word data	Dumps/Display/Decode
dpw	display word data	Dumps/Display/Decode
dr	display registers	Dumps/Display/Decode
dw	display word data	Dumps/Display/Decode
e	exit	Basic
exp	list export tables	Kernel Extension Loader
ext	extract pattern	Dumps/Display/Decode
extp	extract pattern	Dumps/Display/Decode
f	stack frame trace	Basic
fbuffer	Display freelist	File System
fifono	Display fifonode	File System
file	Display file	File System
find	find pattern	Dumps/Display/Decode
findp	find pattern	Dumps/Display/Decode
gfs	Display gfs	File System
gnode	Display gnode	File System
gt	go until address	Breakpoints/Steps
h	help	Basic
hbuffer	Display buffehash	File System
hcal	calc/conv a hexa expr	Calculator Converter
heap	Display kernel heap	Memory Allocator
hinode	Display inodehash	File System
his	print history	Basic
hnode	isplay hnodehash	File System
ibat	display ibats	bat/Block Address Translation
icache	Display icache list	File System
ifnet	Display interface	NET
inode	Display inode	File System
intr	@Display int handler	Process
ipc	IPC information	VMM
ipl	Display ipl proc info	System Table
kmbucket	Display kmembuckets	Memory Allocator
kmstats	Display kmemstats	Memory Allocator
lb	set/list local bp(s)	Breakpoints/Steps
lbtac	local branch target	btac/BRAT
lc	clear local bp	Breakpoints/Steps
lcbtac	clear local br target	btac/BRAT
lcw	clear local watch	Watch
lke	list loaded extensions	Kernel Extension Loader
lockanch	VMM lock anchor/tblock	VMM
lockhash	VMM lock hash	VMM
lockword	VMM lock word	VMM
lvol	Display logical vol	LVM
lwr	local stop on read data	Watch
lwrw	local stop on r/w data	Watch
lww	local stop on write data	Watch
m	modify sequential bytes	Modify Memory
mbuf	Display mbuf	NET
md	modify sequential double word	Modify Memory
mdbat	modify dbats	bat/Block Address Translation
mdpb	modify device byte	Modify Memory
mdpd	modify device double word	Modify Memory
mdph	modify device half	Modify Memory
mdpw	modify device word	Modify Memory
mdvb	modify device byte	Modify Memory
mdvd	modify device double word	Modify Memory
mdvh	modify device half	Modify Memory
mdvw	modify device word	Modify Memory
mibat	modify ibats	bat/Block Address Translation
mp	modify sequential bytes	Modify Memory
mpd	modify sequential double word	Modify Memory
mpw	modify sequential word	Modify Memory
mr	modify registers	Modify Memory
mst	Display mst area	Process
mw	modify sequential word	Modify Memory
n	next instruction	Breakpoints/Steps
ndd	display network and device driver statistics	Net
netm	display the net_malloc event records	Net
netstat	display network status	Net
nm	translate symbol to eaddr	Namelist/Symbol
ns	no symbol mode (toggle)	Namelist/Symbol
pbuf	Display physical buf	LVM
pdt	VMM paging device table	VMM
pfhdata	VMM control variables	VMM
pft	VMM PFT entries	VMM
ppda	Display per processor data area	Process
print	Print a formatted structure at an address	Namelist/Symbol
proc	Display proc table	Process
pta	VMM PTA segment	VMM
pte	VMM PTE entries	VMM
pvol	Display physical vol	LVM
r	go to end of function	Breakpoints/Steps
reboot	reboot the machine	Miscellanous
rmap	VMM RMAP	VMM
rmst	remove symbol table	Kernel Extension Loader
rnode	Display rnode	File System
s	single step	Breakpoints/Steps
S	step on bl/blr	Breakpoints/Steps
scb	VMM segment control blocks	VMM
scd	Display scdisk	SCSI
segst64	VMM SEGSTATE	VMM
set	display/update kdb toggles	Basic
slk	Display simple lock	System Table
sock	Display socket	NET
sockinfo	Display socket info by address	NET
specnode	Display specnode	File System
sr64	VMM SEG REG	VMM
start	Start cpu	SMP
stat	system status message	Machine Status
stbl	list loaded symbol tables	Kernel Extension Loader
ste	VMM STAB	VMM
stop	Stop cpu	SMP
switch	switch thread	Machine Status
symptom	Display symptom string for a dump	Machine Status
tcb	Display TCBs	NET
tcpcb	Display TCP CB	NET
test	bt condition	Conditional
time	display elapsed time	Miscellaneous
thread	Display thread table	Process
tpid	Display thread pid	Process
tr	translate to real address	Address Translation
trace	Display trace buffer	System Table
trb	Display system timer request blocks	System Table
trcstart	Starts the system trace	Trace
trcstop	Stops the system trace	Trace
ts	translate eaddr to symbol	Namelist/Symbol
ttid	Display thread tid	Process
tv	display MMU translation	Address Translation
udb	Display UDBs	NET
user	Display u_area	Process
var	Display var	System Table
vfs	Display vfs	File System
vmdmap	VMM disk map	VMM
vmlocks	VMM spin locks	VMM
vmaddr	VMM Addresses	VMM
vmker	VMM kernel segment data	VMM
vmlog	VMM error log	VMM
vmstat	VMM statistics	VMM
vmwait	VMM wait status	VMM
vnode	Display vnode	File System
volgrp	Display volume group	LVM
vrld	VMM reload xlate table	VMM
vsc	Display vscsi	SCSI
which	Display name of kernel source file	Namelist/Symbol
wr	stop on read data	Watch
wrw	stop on r/w data	Watch
ww	stop on write data	Watch
xm	Display heap debug	Memory Allocator
zproc	VMM zeroing kproc	VMM

Task Category List of KDB Kernel Debug Program Subcommands

The kernel debug program subcommands can be grouped into the following task categories:

Basic Subcommands

Subcommand	Function
h	help
his	print history
e	exit
set	display/update kdb toggles
f	stack frame trace
ctx	switch to KDB context
cdt	Display cdt

Trace Subcommands

Subcommand	Function
bt	set/list trace point(s)
ct	clear trace point
cat	clear all trace points
trcstart	start the system trace
trcstop	stop the system trace

Breakpoints/Steps Subcommands

Subcommand	Function
b	set/list break point(s)
lb	set/list local bp(s)
c	clear break point
lc	clear local bp
ca	clear all break points
r	go to end of function
gt	go until address
n	next instruction
s	single step
S	step on bl/blr
B	step on branch

Dumps/Display/Decode Subcommands

Subcommand	Function
d	display byte data
di	decode the hexadecimal instruction word
dw	display word data
dd	display double word data
dp	display byte data
dpw	display word data
dpd	display double word data
dc	display code
dpc	display code
dr	display registers
ddvb	display device byte
ddvh	display device half word
ddvw	display device word
ddvd	display device double word
ddpb	display device byte
ddph	display device half word
ddpw	display device word
ddpd	display device double word
find	find pattern
findp	find pattern
ext	extract pattern
extp	extract pattern

Modify Memory Subcommands

Subcommand	Function
m	modify sequential bytes
mw	modify sequential word
md	modify sequential double word
mp	modify sequential bytes
mpw	modify sequential word
mpd	modify sequential double word
mr	modify registers
mdvb	modify device byte
mdvh	modify device half
mdvw	modify device word
mdvd	modify device double word
mdpb	modify device byte
mdph	modify device half
mdpw	modify device word
mdpd	modify device double word

Namelist/Symbol Subcommands

Subcommand	Function
nm	translate symbol to eaddr
ns	no symbol mode (toggle)
ts	translate eaddr to symbol
print	Print a formatted structure at an address
which	display name of kernel source file

Watch Break Point Subcommands

Subcommand	Function
wr	stop on read data
ww	stop on write data
wrw	stop on r/w data
cw	clear watch
lwr	local stop on read data
lww	local stop on write data
lwrw	local stop on r/w data
lcw	clear local watch

Miscellaneous Subcommands

Subcommand	Function
time	display elapsed time
debug	enable/disable debug
reboot	Reboot the machine

Conditional Subcommands

Subcommand	Function
test	bt condition

Calculator Converter Subcommands

Subcommand	Function
hcal	calc/conv a hexa expr
dcal	calc/conv a decimal expr

Machine Status Subcommands

Subcommand	Function
stat	system status message
switch	switch thread
symptom	display symptom string for a dump

Kernel Extension Loader Subcommands

Subcommand	Function
lke	list loaded extensions
stbl	list loaded symbol tables
rmst	remove symbol table
exp	list export tables

Address Translation Subcommands

Subcommand	Function
tr	translate to real address
tv	display MMU translation

Process Subcommands

Subcommand	Function
ppda	Display per processor data area
intr	@Display int handler
mst	Display mst area
proc	Display proc table
thread	Display thread table
ttid	Display thread tid
tpid	Display thread pid
user	Display u_area

LVM Subcommands

Subcommand	Function
pbuf	Display physical buf
volgrp	Display volume group
pvol	Display physical vol
lvol	Display logical vol

SCSI Subcommands

Subcommand	Function
asc	Display ascsi
vsc	Display vscsi
scd	Display scdisk

Memory Allocator Subcommands

Subcommand	Function
heap	Display kernel heap
xm	Display heap debug
kmbucket	Display kmembuckets
kmstats	Display kmemstats

File System Subcommands

Subcommand	Function
buffer	Display buffer
hbuffer	Display buffehash
fbuffer	Display freelist
gnode	Display gnode
gfs	Display gfs
file	Display file
inode	Display inode
hinode	Display inodehash
icache	Display icache list
rnode	Display rnode
vnode	Display vnode
vfs	Display vfs
specnode	Display specnode
devnode	Display devnode
fifonode	Display fifonode
hnode	Display hnodehash

System Table Subcommands

Subcommand	Function
var	Display var
devsw	Display devsw table
trb	Display system timer request blocks
slk	Display simple lock
clk	Display complex lock
ipl	Display ipl proc info
trace	Display trace buffer

Net Subcommands

Subcommand	Function
ifnet	Display interface
ndd	Display network device driver statistics
netm	Display the net_malloc event records
netstat	Display network status
tcb	Display TCBs
udb	Display UDBs
sock	Display socket
sockinfo	Display socket information
tcpcb	Display TCP CB
mbuf	Display mbuf

VMM Subcommands

Subcommand	Alias
vmker	VMM kernel segment data
rmap	VMM RMAP
pfhdata	VMM control variables
vmstat	VMM statistics
vmaddr	VMM Addresses
pdt	VMM paging device table
scb	VMM segment control blocks
pft	VMM PFT entries
pte	VMM PTE entries
pta	VMM PTA segment
ste	VMM STAB
sr64	VMM SEG REG
segst64	VMM SEGSTATE
apt	VMM APT entries
vmwait	VMM wait status
ames	VMM address map entries
zproc	VMM zeroing kproc
vmlog	VMM error log
vrld	VMM reload xlate table
ipc	IPC information
lockanch	VMM lock anchor/tblock
lockhash	VMM lock hash
lockword	VMM lock word
vmdmap	VMM disk map
vmlocks	VMM spin locks

SMP Subcommands

Subcommand	Function
start	Start cpu
stop	Stop cpu
cpu	Switch to cpu

bat/Block Address Translation Subcommands

Subcommand	Function
dbat	Display dbats
ibat	Display ibats
mdbat	Modify dbats
mibat	Modify ibats

btac/BRAT Subcommands

Subcommand	Function
btac	Branch target
cbtac	Clear branch target
lbtac	Local branch target
lcbtac	Clear local branch target