[ECOS] arm-elf-gdb Cannot access memory at address ... [IXDP425]

Mark Salter msalter@redhat.com
Fri Sep 24 15:05:00 GMT 2004

On Fri, 2004-09-24 at 10:00, Antonello Lombardinilo wrote:
> I have IXDP425 board (B0 step) with lastet redboot:
> ----------------------------------------------------------------------------
> [root@KaskoPC002 tests]# arm-elf-gdb
> GNU gdb 5.3
> Copyright 2002 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=arm-elf".
> (gdb) target remote
> Remote debugging using
> Cannot access memory at address 0xbcfefc0f   <----- ?????
> 0x28550150 in ?? ()

This is an endianess issue. The arm-elf-gdb is assuming LE, but board
is BE. You need to tell gdb that its a BE target before connecting to
the board. The easiest way to do this is to include the program name
on the command line. Something like:

 # arm-elf-gdb thread0


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