From: Daniel Jacobowitz <drow@mvista.com>
To: Simon Posnjak <simon.posnjak@siol.net>
Cc: gdb@sources.redhat.com
Subject: Re: breakpoints not working in gdbserver
Date: Tue, 13 Aug 2002 15:42:00 -0000 [thread overview]
Message-ID: <20020813224239.GA16803@nevyn.them.org> (raw)
In-Reply-To: <1029277842.6335.42.camel@klada.dyndns.org>
On Wed, Aug 14, 2002 at 12:30:42AM +0200, Simon Posnjak wrote:
> Hi all,
>
> I'm trying out a cross-debuger for arm/ia32 development. I have build
> gdb for arm that runs on ia32 (./configure --host=i686-pc-linux-gnu
> --target=armv4l-unknown-linux --prefix=/usr/local/arm/
> --exec-prefix=/usr/local/arm/ --program-prefix=arm-)
> and gdbserver for arm (sh configure --target=armv4l-unknown-linux).
That's not right. You have to configure gdbserver using
--host=armv4l-unknown-linux, not --target.
> Program received signal SIGILL, Illegal instruction.
> 0x40002b38 in _dl_debug_state ()
> from /staff2/4pot/buildroot/build/stage/lib/ld-uClibc.so.0
> (gdb) bt
> #0 0x40002b38 in _dl_debug_state ()
> from /staff2/4pot/buildroot/build/stage/lib/ld-uClibc.so.0
> #1 0x40001c74 in _dl_parse_copy_information ()
> from /staff2/4pot/buildroot/build/stage/lib/ld-uClibc.so.0
> (gdb)
>
> The program dies with Illegal instruction - if I run it without
> gdbserver it is working fine.
>
> I'm using a home-made linux system:
> kernel 2.4.18
> uClibc 0.9.14
> gcc-2.95.3
>
> Is this maybe a problem with uclibc... or is this problem of
> gdb(server)?
Now, I just checked, and the FSF tree does indeed have the correct
breakpoint instruction on ARM. And GDB is placing that breakpoint
anyway, not gdbserver. I assume you're actually running a Linux kernel
- Linux has a different breakpoint convention from ARM hardware.
Need a little more information. Please set remote_debug to 1 and
rebuild gdbserver, and send the output...
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
next prev parent reply other threads:[~2002-08-13 22:42 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-13 15:30 Simon Posnjak
2002-08-13 15:42 ` Daniel Jacobowitz [this message]
2002-08-14 6:09 ` ARM/Linux OSABI problems (was Re: breakpoints not working in gdbserver) Daniel Jacobowitz
2002-08-14 6:58 ` William A. Gatliff
2002-08-14 21:33 ` Andrew Cagney
2002-08-15 1:09 ` Simon Posnjak
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