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At 12:33 AM 7/4/2002 -0400, Quality Quorum wrote:
On Wed, 3 Jul 2002, KONG, Gangfeng wrote:In fact, L4 port, I mean Layer 4 (transport layer) port. Sorry for the confusion.
>
> > >
> > > Hi,
> > >
> > > I start the gdb stub on the target by:
> > > gdbstart -s 38400 -t /dev/ttyS0
> > > and start the gdb on the development box by:
> > > gdb vmlinux
> > > gdb)
> > > gdb) set remotebaud 38400
> > > gdb) target remote my-server-ipaddr:port #note, the port I put
> > > here is the serial port# on the server,
> > > #not L4 port, correct?
> >
> >No, you have to use telnet port here.
>
> Hi,
>
> normally, I use the command:
> telent server-ipaddr 2001
> to access its port 1. (2002 for port 2, 2003 for port 3 ...)
>
> It looks like console server already map its L4 port into serial port.
I suppose that L4 means port 4 on the server and /dev/ttyS0 on the target
then you have to use 'target server-ipaddr 2004'.
In order to check the whole system, I did install a kgdb stub of linux on myIf L4 means something else, then use another port. How to debug a connection: 1. Make sure that terminal server is properly configured and the cable is good: connect port 4 on the terminal server to the some known working target, e.g. standar UNIX serial port, do 'telnet server-ip 2004' and type stuff on console and check responses. 2. Make sure that gdb stub is workin properly: connect port 4 on the terminal server to debug port on the targe, start gdb stub, again do 'telnet server-ip 2004' and make sure that by hitting return you cause gdb to send you properly formed packets. 3. Start gdb and do 'target remote server-ip:2004' I would be very surprised if it does not work at the point.
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