SCODB commands

After SCODB is invoked, invoke the appropriate commands from the following list. A list of supported commands is also available from within SCODB; use the ? or help command.

alias [word [new_command]]

Set or list command aliases

bc [* | address | DRn name]

Clear breakpoint

bl [name]

List breakpoints

bp [en | dis | mod | name | [[rwi] [b | s | l] | x]] addr [condition value]

Set breakpoints

c | cb | cs | cl address

Change memory

d | db | ds | dl | dn address

Dump memory

declare | dcl C_declaration

Give a system variable a type

dis| u [exact] [mode [ [-]name...]] | address

Disassemble (unassemble)

newterm [device driver name | device unit number]

Switch control of kernel debugger from console to serial terminal and vice versa.

quitif expression

If (expression), then quit

r | R [ stack_addr -p pid -p proc_addr]

Display system or user registers

s | step [-r]

Single-step

stack [ stack_addr | -p pid | -p proc_addr]

Stack backtrace

struct [-> member] [members] addr

Show structure member values

symname | sym address

Find symbol corresponding to an address.

type expression | symbol

Show type of expression or symbol

unalias alias...

Unset alias

undeclare | undcl [* | variable...]

Undeclare system variables

unvar [*|variable...]

Remove debugger variables

var [name initvalue]

Create and list debugger variables

Note the following about issuing commands:

• Errors made while entering a command line can be corrected. Use <Del> to kill the input line, or <Bksp> to correct the error.

• Some commands, such as bp, use the SCODB editing facilities for input on several lines at once. When using the vi edit mode, editing is entered in insert mode if the list is empty and in command mode if the list is not empty.

• Commands can be aliased. See ``Command aliasing''.