step through entire file, saving each line to file?

step through entire file, saving each line to file?

[Dexter Riley]

hello!  I'd like to step through an entire program, and dump each executed
line fo file.  I can do
gdb myprogram > tee savefile
(gdb)display/i $pc
(gdb)start
(gdb)si

and it displays the currently executed line.  I'd like the equivalent of
typing si multiple times; trying
(gdb) si 1000
apparently steps through 1000 lines and shows me THAT line.

Is there some nifty si or shell trick to do this?  Sorry for the newbie
question, but any help would be greatly appreciated.

Thanks very much,
dexter
-- 
View this message in context: http://www.nabble.com/step-through-entire-file%2C-saving-each-line-to-file--tf3275680.html#a9109689
Sent from the gdb - General mailing list archive at Nabble.com.

Re: step through entire file, saving each line to file?

[Rob Quill]

On 22/02/07, Dexter Riley <edbeaty@charter.net> wrote:
>
> hello!  I'd like to step through an entire program, and dump each executed
> line fo file.  I can do
> gdb myprogram > tee savefile
> (gdb)display/i $pc
> (gdb)start
> (gdb)si
>
> and it displays the currently executed line.  I'd like the equivalent of
> typing si multiple times; trying
> (gdb) si 1000
> apparently steps through 1000 lines and shows me THAT line.
>
> Is there some nifty si or shell trick to do this?  Sorry for the newbie
> question, but any help would be greatly appreciated.

You should be able to write a GDB command file to do it. I think this
should work:

myprogram > tee savefile
display/i $pc
start

# Loop while the program hasn't finished
while($_exitcode == (void *)0)
{
   si
}

Although I haven't tested that, but if it is not that it is something
close. You can read up on command files in the manual, but basically,
write a file with the above in, then run GDB with the -x option.

eg: gdb myprogram -x myscript

Hopefully that will work. Appologies if I'm wrong, it's been a long
day of memory leak fixing  :(

Rob

> Thanks very much,
> dexter
> --
> View this message in context: http://www.nabble.com/step-through-entire-file%2C-saving-each-line-to-file--tf3275680.html#a9109689
> Sent from the gdb - General mailing list archive at Nabble.com.
>
>