Re: minimal stub? (GDB Remote Serial Protocol)

[Jon Ringle <jon.ringle@comdial.com>]

On Friday 23 January 2004 06:06 pm, Vijay Kamarshi wrote:
> Hi all,
>
> I am planning on using GDB to debug a remote processor running a debug
> stub. It is quite concerning to me that the remote protocol document is
> out-of-date.  Is it that easy to figure out what the protocol is by
> experimentation?  For example if the GDB host sends a stream of commands to
> the remote processor and it mis-interprets the first one, is the host not
> going to just quit on that?  That would make the experimentation process
> pretty long!
>
> I am puzzled:
> 1) are there no people out there who have this protocol figured out?  I
> would appreciate at least a starting point!
> 2) are all the commands in the remote protocol document out of date or just
> some of them?
>
> Any help would be gratefully received.
>
> -Vijay Kamarshi
> PS:  I heard that one way of figuring out this remote protocol is to peer
> deeply into gdbserver, but people have warned me that it is a pretty hairy
> piece of code.

Hi Vijay,

A while back I backported an arm kgdb patch for kernel 2.4.19 to a target 
based on kernel 2.2.16 found at:
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=1335/1

It may be helpful.

Jon