lm32 remote debugger issues

[Jukka Pietarinen]

Jukka Pietarinen wrote:
> I'm still struggling with getting the lm32-rtems4.10-gdb to work with 
> TCP2JTAGVC2 from Lattice. After connecting to the target gdb talks to 
> TCP2JTAGVC2 but fails with the 'g' command:

I have traced down this problem to gdb/remote.c where sizeof_g_packet is 
determined from the list of remote registers. For the lm32, however, 
this does not match the target response for the g command. gdb expects 
to receive 37 32-bit registers (37*4*2=296 bytes) but the target replies 
with 39 (39*4*2=316 bytes).

I did a hack to process_g_packet to bypass the sanity check of the 
packet reply and with this hack gdb works and I can load and run/debug 
on target hardware, but naturally this needs to be resolved in a proper way.

Unfortunately I do not have the sources for TCP2JTAGVC2 and have no idea 
what the two extra registers returned by the target are.

Any ideas how to address this issue?

Thanks,
Jukka