shared serial port in GDB

shared serial port in GDB

[Inder]

Hi All,

I have a requirement that i need to use the same serial port to send
commands to the board and also debug it using GDB.

I have searched the archives there is only one discussion on this

 http://sources.redhat.com/ml/crossgcc/1999-q3/msg00265.html

I just wanted to know if such a feature is already available in GDB,
if not will it be useful if i wanted to add it in myself.

--
Thanks,
Inder

Re: shared serial port in GDB

[Daniel Jacobowitz]

On Tue, Nov 22, 2005 at 07:49:06PM +0530, Inder wrote:
> Hi All,
> 
> I have a requirement that i need to use the same serial port to send
> commands to the board and also debug it using GDB.
> 
> I have searched the archives there is only one discussion on this
> 
>  http://sources.redhat.com/ml/crossgcc/1999-q3/msg00265.html
> 
> I just wanted to know if such a feature is already available in GDB,
> if not will it be useful if i wanted to add it in myself.

Doing this outside of gdb may be more useful.  I vaguely recall a Linux
tool for this, called kdmx (for demux):
  http://linux.junsun.net/porting-howto/src/kdmx-1.02.tar.gz

-- 
Daniel Jacobowitz
CodeSourcery, LLC

Re: shared serial port in GDB

[Jim Blandy]

Or, depending on the sorts of commands you need to send, GDB's
'monitor' command might be helpful.  It sends an 'qRcmd' packet to the
stub, and the stub can do with it whatever it likes.

Re: shared serial port in GDB

[Jim Blandy]

Veering off-topic: when I deal with the remote protocol, I often
wonder how small one could get a PPP implementation.  The remote
protocol's half-hearted gestures at layering, control character
transparency, and so on just seem kind of dumb.  One wouldn't need to
implement all the little PPP sub-protocols.  But it would be cool to
actually talk to a stub over TCP, and be able to assume a reliable
connection.