Re: Remote Debugging

[Joerg Eesmann <jeesmann@gmx.de>]

Hi again,
sometimes one can`t see the obvious, but thanks for help.
I connected gdb remote. But I got following message:

warning: The current binary is a PIE (Position Independent Executable),
which
GDB does NOT currently support.  Most debugger features will fail if
used
in this session.

Reading symbols
from /home/joerg/prj/OpenMoko/shr/shr-build/shr-unstable/tmp/work/armv4t-oe-linux-gnueabi/bluez4-4.59-r5.0/bluez-4.59/src/.libs/bluetoothd...done.
(gdb) target remote 192.168.0.202:3333
Remote debugging using 192.168.0.202:3333
warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.

and I cannot set breakpoints or whatever.
I thought, gdb 7.0 is supporting PIE.
Is there any possibility to compile bluez4 not as PIE, would it work?
While googeling, I found some patches for gdb, which may help.
Any ideas?

(by the way, is there a usable graphical frontend for gdb for this case:
remote-debugging wit cross gdb)?
I only managed to get it running (until the message) textbased.

Thank you for supporting me,
best regards,
Joerg


On Fri, 2010-01-08 at 14:39 -0800, Khem Raj wrote:
> On (08/01/10 22:37), Joerg Eesmann wrote:
> > Hi there,
> > I am trying to remote debug my Openmoko freerunner.
> > I already installed succesfully gdbserver, and can attach it to the
> > progem I am going to debug.
> > The question is, what to do on host side?
> > I bitbaked gdb-cross-sdk, I bitbaked my changed package (bluez4)
> > So I will install a debug version of the package, and attach to the
> > bluetoothd-demon.
> > On host side, I guessed I needed a gdb, that can handle ARM-processor,
> > therefore gdb-cross-sdk.
> > Now I should have everything... but a few questions left.
> > GDB ist only ipk-package, what to do with this?
> 
> you need gdb-cross once you build that you should be able to use it
> from same place as cross gcc.
> 
> > Where do I find the arm-compiler bluetoothd on my host (I guess in work,
> > but will this be the strippded version or not, because also stripped
> > package has been made).
> > Am I on the right way? Is there any howto or something like that
> > availlable, where you could point me?
> > 
> 
> if you build it then the non stripped version should be there in 
> your workdir (where the package was built)
> 
> -Khem
> > thank you for your help in advance,
> > best regards,
> > Joerg
> > 
> > 
> > 
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