* GDB Scripting
@ 2001-10-20 5:25 Robert Graulich
2001-10-21 10:50 ` Fernando Nasser
0 siblings, 1 reply; 2+ messages in thread
From: Robert Graulich @ 2001-10-20 5:25 UTC (permalink / raw)
To: GDB Mailing List
Hi all,
is it possible, to store the result of a gdb command like 'frame' in a variable?
I like to write someting like
define hook-stop
set $FRAME=frame
if $FRAME=="main"
...
else
...
end
end
How to do that?
Robert
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: GDB Scripting
2001-10-20 5:25 GDB Scripting Robert Graulich
@ 2001-10-21 10:50 ` Fernando Nasser
0 siblings, 0 replies; 2+ messages in thread
From: Fernando Nasser @ 2001-10-21 10:50 UTC (permalink / raw)
To: Robert Graulich; +Cc: GDB Mailing List
Robert Graulich wrote:
>
> Hi all,
>
> is it possible, to store the result of a gdb command like 'frame' in a variable?
> I like to write someting like
>
> define hook-stop
> set $FRAME=frame
> if $FRAME=="main"
> ...
> else
> ...
> end
> end
>
> How to do that?
>
Unfortunately the "frame" command does not set any convenience variable
automatically (which is the only way to obtain data from a GDB command
execution). So, the way to do this is:
Set a breakpoint at main.
Use the "commands" command and add
print $main_fp=$<reg>
continue
where <reg> is the FP register in your architecture.
Then just make your if compare the $<reg> at the
point you've stopped with $main_fp
I hope this helps.
Regards,
Fernando
--
Fernando Nasser
Red Hat Canada Ltd. E-Mail: fnasser@redhat.com
2323 Yonge Street, Suite #300
Toronto, Ontario M4P 2C9
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