Intel XENIX 286 Programmers Guide (86) - Tenox.tc

XENIX Programming adb: Program Debugger
Deleting Breakpoints
You can delete a breakpoint from a program by using the :dl command. The command
has the form
address :dl
where address is the address of the breakpoint you wish to delete.
The :dl command is typically used to delete breakpoints you no longer wish to use. The
following command deletes the breakpoint set at the start of the function main:
main:dl
Displaying the C Stack Backtrace
You can trace the path of all active functions by using the $c command. The command
lists the names of all functions that have been called and have not yet returned control,
as well as the address from which each function was called and the arguments passed to
it.
For example, the command
$c
displays a backtrace of the C language functions called.
By default, the $c command displays all calls. If you wish to display just a few, you
must supply a count of the number of calls you wish to see. For example, the command
,25$c
displays up to 25 calls in the current call path.
Note that function calls and argu ments are put on the stack after the function has been
called. If you put breakpoints at the entry point to a function, the function will not
appear in the list generated by the $c command. You can remedy this problem by
placing breakpoints a few instructions into the function.
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