Re: gdbserver using serial port

Yoriko Komatsuzaki
2007-11-02T04:12:01Z

Thank you for your answer.

My environment is a littel special.

On target (gdbserver run), the serial (/dev/ttyS0) is used as the
channel. But on host (gdb run), the usb (/dev/ttyUSB0) is used.
And the host and the target is connected by "the serial/usb
transimission cable".

So I guess that this special hardware environment might affects this
problem.

% gdb
(gdb) set debug remote 1
(gdb) set debug serial 1
(gdb) target remote /dev/ttyUSB0
Remote debugging using /dev/ttyUSB0
Sending packet: $qSupported#37...

Thank you.
---
Yoriko Komatsuzaki (yoriko@sm.sony.co.jp)

> On Fri, Nov 02, 2007 at 11:14:13AM +0900, Yoriko Komatsuzaki wrote:
> > Hello,
> >
> > I would like to ask you about gdbserver in case of using serial port.
> > In gdb-6.6, if I run gdbserver using serial port, the following messages
> > continue and it can't establish the connection to host gdb.
>
> Yes, serial support was broken in gdbserver 6.6.
>
> > % gdbserver /dev/ttyS0 a.out
> > Process a.out created; pid = 10696
> > Remote debugging using /dev/ttyS0
> >
> > So I ran the host gdb and tried to establish the connection between host
> > and target, but couldn't establish the connections channel.
>
> Please be more specific. What does "set debug serial 1" and "set
> debug remote 1" before connecting show?
>
> If your console is /dev/ttyS0 and a.out writes to the terminal, you
> will need to redirect it, or it will interfere with communication.
>
> --
> Daniel Jacobowitz
> CodeSourcery