[vba-developement] VBA 1.7.2 GDB-Stub

[Fabian S. <fab...@gm...>]

Hello everybody,

I'd like to use VBA for the exercise of a lecture, a small real-time
operating system should be developed with the VBA, therefore I'd also
like to use the builtin GDB-stub. Unfortunately I was not able to do
this successfully up to now.

Connecting to the emulator, loading the application to the emulator
and instruction steps works fine, but I was not able to successfully
set a breakpoint at a source line and halt there. When I try this VBA
just runs over the breakpoint and when I try to interrupt the emulator
it is not possible to e.g. view the registers any more. I'm quite sure
the particular soure line is reached, as it is also reached, whe I
step there instruction by instruction.

I'm using arm-elf-gdb version 6.4 for debugging:

GNU gdb 6.4
Copyright 2005 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-elf".

and I invoke VBA like this:

VisualBoyAdvance -Gtcp:10465

when setting breakpoints VBA produces messages like this:

Unknown packet pf#d6
Unknown packet vCont?#49

I guess these messages indicate the problem, don't they? Has the GDB
remote protocol evolved somehow, while the VBA GDB stub has not?

Thanks in advance - any hints are appreciated!

Ciao, Fabian