Re: kgdb and console output

On Fri, 2003-03-14 at 17:25, Tom Rini wrote:

On Fri, Mar 14, 2003 at 11:49:50AM +0000, Ibon Gotxi Garcia wrote:

[snip]

quoted

INIT: INIT: NIT: IT: T: : version 2.78 bootingersion 2.78 bootingrsion
2.78 bootingsion 2.78 bootingon 2.78 booting

It's related to the 'console' support inside of the serial driver / kgdb
stub.  The best way, IMHO, around this is to use the 'kgdb_demux'
script.  I don't have the URL handy, but google knows.

I have found it in
http://linux.junsun.net/porting-howto/src/kdmx-1.02.tar.gz

but I'm still unable of making it work. I seems fine when the kernel is
loading, but it begins to do funny thing when we move to userland.

I think the hole point is character scape: GDB packets are
$data#checksum, so when some output (no debug output, just normal one)
is made to the console having '$', '#' or even '+' and '-', the kdmx
script goes mental.

I'm thinking in two possible solutions:

1.- Wait till kgdb has LAN support (gdb packets over udp, instead of
over the serial port).
2.- Patch the console driver (no idea how) to avoid printing '$' or '#'.
Probably a terrible hack, but perhaps useful for development.

Any idea about this?


Cheers.
Ibon.

--
Tom Rini
http://gate.crashing.org/~trini/

--
Ibon Gotxi Garcia [off-list ref]


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