gdbserver + arm nommu

gdbserver + arm nommu

[Mangesh Edake]

Hi All,
         I want to run the gdbserver on ARM platform
with NOMMU. I am not able to find any patches for
this. I am looking for gdb-6.x. Please let me know if
any patches are available and if not , let me know 
what are the changes i need to follow.

Thanks and regards,
Mangesh Edake


 
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Re: gdbserver + arm nommu

[Daniel Jacobowitz]

On Fri, Nov 17, 2006 at 12:53:22AM -0800, Mangesh Edake wrote:
> Hi All,
>          I want to run the gdbserver on ARM platform
> with NOMMU. I am not able to find any patches for
> this. I am looking for gdb-6.x. Please let me know if
> any patches are available and if not , let me know 
> what are the changes i need to follow.

Have you just tried it?  If it does not work, say what's wrong.  Use
a version from CVS.

-- 
Daniel Jacobowitz
CodeSourcery

Re: gdbserver + arm nommu

[Daniel Jacobowitz]

On Fri, Nov 17, 2006 at 06:27:26AM -0800, Kaushik karandikar wrote:
>                 Even i am having the same problem. I compiled
>                 gdbserver from gdb-6.0. And stuck with the thread_db.
>                 And many other compilation errors. I am using the
>                 arm-elf-gcc-2.95 compiler. I found the patches for
>                 gdb-5.2.1 but in that i am not able to do single step
>                 and continue. It would be a great help if you look
>                 into those issues and guide to make gdbserver up and
>                 running on ARM board.

We can only help you with the current version.  Nathan added a patch
useful for uClinux in the last few months.  I've only tested it
on ColdFire, but I think it would work on ARM too.

As for thread_db and other compilation errors, I assume this is a
problem with your development environment, not with gdbserver.

-- 
Daniel Jacobowitz
CodeSourcery

Re: gdbserver + arm nommu

[Mangesh Edake]

Hi,
   I looked for the patches provided by nathan. I
found those patches are for m68k and apply to the
files gdb/m68k-tdep.c and gdb/m68klinux-tdep.c

http://sourceware.org/ml/gdb-patches/2006-06/msg00093.html


There is no patch for ARM for gdb-6.x to make
gdbserver work on ARM platform. So we have decided to
continue with gdb-5.2.1 as it is patched. Now in this
case I have arm-elf-gdb version 6.4 and gdbserver that
will run on ARM board is from gdb-5.2.1, so will this 
create any problems due to version mismatch going
further?  

Thanks and Regards,
Mangesh Edake



--- Daniel Jacobowitz <drow@false.org> wrote:

> On Fri, Nov 17, 2006 at 06:27:26AM -0800, Kaushik
> karandikar wrote:
> >                 Even i am having the same problem.
> I compiled
> >                 gdbserver from gdb-6.0. And stuck
> with the thread_db.
> >                 And many other compilation errors.
> I am using the
> >                 arm-elf-gcc-2.95 compiler. I found
> the patches for
> >                 gdb-5.2.1 but in that i am not
> able to do single step
> >                 and continue. It would be a great
> help if you look
> >                 into those issues and guide to
> make gdbserver up and
> >                 running on ARM board.
> 
> We can only help you with the current version. 
> Nathan added a patch
> useful for uClinux in the last few months.  I've
> only tested it
> on ColdFire, but I think it would work on ARM too.
> 
> As for thread_db and other compilation errors, I
> assume this is a
> problem with your development environment, not with
> gdbserver.
> 
> -- 
> Daniel Jacobowitz
> CodeSourcery
> 



 
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Re: gdbserver + arm nommu

[Daniel Jacobowitz]

On Sat, Nov 18, 2006 at 06:05:01AM -0800, Mangesh Edake wrote:
> 
> Hi,
>    I looked for the patches provided by nathan. I
> found those patches are for m68k and apply to the
> files gdb/m68k-tdep.c and gdb/m68klinux-tdep.c

Those patches have nothing to do with this.

If you can't try CVS HEAD, see if it works, and tell us what
happens if it doesn't work, then I'm sorry but we can't help
you.

> There is no patch for ARM for gdb-6.x to make
> gdbserver work on ARM platform. So we have decided to
> continue with gdb-5.2.1 as it is patched. Now in this
> case I have arm-elf-gdb version 6.4 and gdbserver that
> will run on ARM board is from gdb-5.2.1, so will this 
> create any problems due to version mismatch going
> further?  

It should be fine.

-- 
Daniel Jacobowitz
CodeSourcery

Re: gdbserver + arm nommu

[Mangesh Edake]

Hi all,
  I am able to debug a program using gdb-6.4 and
gdb-6.4/gdbserver. Many thanks to Daniel for his
precious suggestions.
  Currently I am trying to debug a multi-threaded
program using the same gdbserver. I have compiled
uClibc with the pThread debugging enabled and then 
statically linked gdbserver with libthread_db.a 
and the program with libpthread.a, as my target
doesn't support dynamic linking (no shared lib
support, even toolchain cannot create .so files). 
  Now when I try to debug a program, it kills at 
'pthread_create' line. Between 'info th' from the gdb
running on host lists only the main process as a
thread. I checked with gdbserver and it supports many
of the q-packets and thread related packets.
  In this case gdb at host is supposed to refer the
exactly same 'pthread symbols' as target is, but it
cannot. Even I cannot try solib-absolute-prefix  
or solib-search-path, since there are no corresponding
.so (libthread_db.so) files generated at host. Hence
looking at the scenario, is this causing my program to
terminate? and is there any way to tell gdb the
'pthread symbols' statically? 

Thanks in advance,
Mangesh Edake. 

 
--- Daniel Jacobowitz <drow@false.org> wrote:

> On Sat, Nov 18, 2006 at 06:05:01AM -0800, Mangesh
> Edake wrote:
> > 
> > Hi,
> >    I looked for the patches provided by nathan. I
> > found those patches are for m68k and apply to the
> > files gdb/m68k-tdep.c and gdb/m68klinux-tdep.c
> 
> Those patches have nothing to do with this.
> 
> If you can't try CVS HEAD, see if it works, and tell
> us what
> happens if it doesn't work, then I'm sorry but we
> can't help
> you.
> 
> > There is no patch for ARM for gdb-6.x to make
> > gdbserver work on ARM platform. So we have decided
> to
> > continue with gdb-5.2.1 as it is patched. Now in
> this
> > case I have arm-elf-gdb version 6.4 and gdbserver
> that
> > will run on ARM board is from gdb-5.2.1, so will
> this 
> > create any problems due to version mismatch going
> > further?  
> 
> It should be fine.
> 
> -- 
> Daniel Jacobowitz
> CodeSourcery
> 



 
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