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List:       uclinux-dev
Subject:    RE: [uClinux-dev] m68k gdb problem
From:       "Jate Sujjavanich" <jsujjavanich () syntech-fuelmaster ! com>
Date:       2005-02-28 15:04:30
Message-ID: EC5EE493B6046F45A2DDEC4A828DE52E3EAC6E () EXCHSRVR ! syntech ! org
[Download RAW message or body]

I have been having precisely the same problem. One person in the past
had the same error. I tried to get around this error by compiling gdb
6.3 without the bdm patches, and I was able to set and stop at a
breakpoint. However, another error cropped up when I tried stepping, and
I think it has to do with instruction misalignment. The error message
is:

"Program received signal SIGILL"

This post is more detailed than my last one. Any tips?

- Jate S.

-----Original Message-----
From: uclinux-dev-bounces@uClinux.org
[mailto:uclinux-dev-bounces@uClinux.org] On Behalf Of Josef Baumgartner
Sent: Monday, February 28, 2005 5:13 AM
To: uclinux-dev@uclinux.org
Subject: [uClinux-dev] m68k gdb problem

Hi,

I tried to use the new gdb from Bernardo Innocentis toolchain
(m68k-uclinux-tools-gdb-glibc22-20040604.sh) and detected a problem.
If i try to set a breakpoint and run the application gdb says "Software
breakpoints not implemented for this target.". The same works with
gdb5.0. I attached the output of the two gdb sessions below.

Has anybody used the new gdb? Any idea, what could be wrong?

Thanks,

Josef
 
------------------------------------------------------------------------
----------------
$ /usr/local/bin/m68k-bdm-elf-gdb
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "--host=i686-pc-linux-gnu
--target=m68k-bdm-elf".
(gdb) file nml_hnd.gdb
Reading symbols from nml_hnd.gdb...done.
(gdb) target remote 10.30.55.104:3000
Remote debugging using 10.30.55.104:3000
0xdf0048 in _start ()
(gdb) b main
Breakpoint 1 at 0xdf0446: file main.c, line 338.
(gdb) c
Continuing.

Breakpoint 1, main (argc=2, argv=0xddff44) at main.c:338
338         int temp, option, debug_mask = DBG_MASK_NONE;
(gdb)            

------------------------------------------------------------------------
----------------

$ /usr/local/m68k-uclinux-tools/bin/m68k-bdm-elf-gdb
GNU gdb 6.1
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "--host=i686-pc-linux-gnu
--target=m68k-bdm-elf".
(gdb) file nml_hnd.gdb
Reading symbols from nml_hnd.gdb...done.
(gdb) target remote 10.30.55.104:3000
Remote debugging using 10.30.55.104:3000
0x00e06048 in _start ()
(gdb) b main
Breakpoint 1 at 0xe06492: file main.c, line 338.
(gdb) c
Continuing.
Software breakpoints not implemented for this target.
(gdb) 


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