Re: gdbserver on ixp1200

[Daniel Jacobowitz <drow@mvista.com>]

On Sat, Dec 07, 2002 at 08:29:14PM -0500, Chris Gniady wrote:
> Hello,
> I have searched all over the web and did not find a clear answer. I am 
> trying to run gdbserver on ixp1200. It is SA1100 with linux 2.3.99. I 
> have compiled the gdb 5.2.1 and gdbserver from this distribution. Here 
> is what happens:
> 1) FOR GDB configured as "--host=i686-pc-linux-gnu --target=arm-linux"
>   I when i execute a breakpoint the instruction is simply skipped. My 
> code is
> 
>    while(1);
>    prinf("done\n");
> 
> When I set breakpoint at while(1) the printf gets executed. so it is skipped
> I am also not able to single step.
> 
> 2) FOR GDB configured as "--host=i686-pc-linux-gnu --target=arm-elf"
> I am able to single step but when I set a breakpoint I get on host:
> 
> > Program received signal SIGILL, Illegal instruction.
> > 0x02001590 in main (argc=1, argv=0xbffffdc4) at tmmain.c:82
> > 82              while(1)
> 
> AND on remote:
> > Treadmartm (280): undefined instruction: pc=02001590
> 
> Can anyone help me with correct configuration or patches, to handle 
> breakpoints in this configuration.

Don't configure for arm-elf, that won't work.

I need more information on the problem with arm-linux.  Would you post
these things:
  - output of a gdb session with 'set debug remote 1'
  - output of a gdb session with 'set debug target 1'
  - output of arm-linux-objdump -d a.out


I do use an arm-linux configured GDB and I haven't had these kinds of
problems with it...

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer