gdbserver error codes

Hello!

Now I'm trying to write a frontend to gdbserver and I faced with error
message from the server. It's "E01" message from write_enn(). This
write_enn() function, as far as I see, is used to produce a message in
a case of any error on the server side.

I think the messages should be more informative: different error codes
for different errors, at least. I think, now I have a time to work
with it. Moreover, I have a 10 year experience with debugging code for
windows using OllyDBG. Do you have any ideas what can I do for this
issue?