* questions on debug informations used by gdb
@ 2003-07-03 10:39 Roul Oldenburger
2003-07-03 12:10 ` Daniel Jacobowitz
0 siblings, 1 reply; 2+ messages in thread
From: Roul Oldenburger @ 2003-07-03 10:39 UTC (permalink / raw)
To: gdb
Hello there,
I am quit new to this topic and also to this list. My apologies if I put
this question in the wrong place.
Instances of datatypes (esp. structures and records in C and Ada) can be
viewed using gdb ... using ddd also let me click them to view each
single component.
What I am looking for is the information gdb is using to display the
name and the value of a structure. More precisely I need the positions
or lets say offsets and sizes of the structures and their components in
memory. I am hoping to find all I need in the debug information gcc
includes into the objectfiles.
Unfortunately I haven't found something like a list of what kind of
information gcc includes and in what format.
Having seen gdb uses the same information I am looking for, I like to
know where does it get it from. Probably there are functionalities in
gdb I might use to extract the same information for my purposes?
And in case the informations I need are included, I also like to know if
there are differences in format if compile for different platforms and
/or different machines?
If you could help to answer my questions I would be happy!
Probably my questions seem to be basics for you, so I would be happy if
somone could send me a link to a document or how-to, to solve them on my
own.
Thanks a lot
Roul Oldenburger
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: questions on debug informations used by gdb
2003-07-03 10:39 questions on debug informations used by gdb Roul Oldenburger
@ 2003-07-03 12:10 ` Daniel Jacobowitz
0 siblings, 0 replies; 2+ messages in thread
From: Daniel Jacobowitz @ 2003-07-03 12:10 UTC (permalink / raw)
To: Roul Oldenburger; +Cc: gdb
On Thu, Jul 03, 2003 at 12:40:44PM +0200, Roul Oldenburger wrote:
> Hello there,
>
> I am quit new to this topic and also to this list. My apologies if I put
> this question in the wrong place.
>
> Instances of datatypes (esp. structures and records in C and Ada) can be
> viewed using gdb ... using ddd also let me click them to view each
> single component.
> What I am looking for is the information gdb is using to display the
> name and the value of a structure. More precisely I need the positions
> or lets say offsets and sizes of the structures and their components in
> memory. I am hoping to find all I need in the debug information gcc
> includes into the objectfiles.
>
> Unfortunately I haven't found something like a list of what kind of
> information gcc includes and in what format.
>
> Having seen gdb uses the same information I am looking for, I like to
> know where does it get it from. Probably there are functionalities in
> gdb I might use to extract the same information for my purposes?
>
> And in case the informations I need are included, I also like to know if
> there are differences in format if compile for different platforms and
> /or different machines?
>
> If you could help to answer my questions I would be happy!
>
> Probably my questions seem to be basics for you, so I would be happy if
> somone could send me a link to a document or how-to, to solve them on my
> own.
Your best bet is to take a look at the DWARF specification, and
libdwarf. See http://reality.sgiweb.org/~davea/.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2003-07-03 12:10 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-07-03 10:39 questions on debug informations used by gdb Roul Oldenburger
2003-07-03 12:10 ` Daniel Jacobowitz
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).