Re: netbsd/x86 and netbsd/walnut gdbserver issues

[Daniel Jacobowitz <drow at mvista dot com>]

On Wed, Jun 12, 2002 at 09:20:17PM -0700, Shashi Rao wrote:
> Hi
> 
> I had gdbserver (from 5.1.1) working with netbsd/x86. I was halfway
> toward getting it to work on netbsd/walnut (an IBM powerpc 405GP
> based board. a quirk: the 405GP does not implement FP instructions).
> 
> I modified it to be startable from inetd (so that it would use stdio
> for its "remote socket") and also implemented the "detach"
> remote-serial command (so a ctrl-c at the gdb end would cause a
> ptrace detach of the target on the server side). (I also implemented
> the --attach feature for low-nbsd)
> 
> I'd like to be able to move on to gdb 5.2 (and just got on the
> mailing list) but I notice that netbsd is not a supported target any
> more. I'd like to try and restore the netbsd/x86 target (and also
> provide a netbsd/walnut target) if possible.

Great!

> I dont quite know where to start -- should I just use 
> gdb_5_2-2002-04-29-release as a starting point, and using the
> linux-low stuff as a model, hack on it till things work? Should I be
> doing anything else? Any other pointers? 

Well, I just dumped another large chunk of code into gdbserver, but
it'll probably just make life more confusing (LinuxThreads support). 
But please do take a look at it; patches against current CVS are always
the most useful.  You don't need to implement most of what is there
now, just the little bits described in target.h.  You can probably just
copy lots from linux-low.c; after I see what you copy, I can probably
factor it out into a common file.  I'll be glad to help you along the
way.

> I am not really very familiar with the gdb internals, but now is a
> good time to start!  Also, I'd like to be able to turn in a patch
> if/when I'm successful.

In that case, you should file an FSF copyright disclaimer.  I've
attached the request form.  You may also need an employer disclaimer.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer
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