ulfsen@binaervarianz.de wrote:
> ...
> Now my main problem is that I coundn't find any information about
> multicore debugging with the help of QEMU an GDB.
> Even after changing the current CPU from 0 to 1 in QEMU console the QEMU
> GDB stub is still running on CPU0.

SMP/Multicore debugging with the gdbstub is broken.

> 
> Is there a way to do some debugging on CPU 1,2 or 3?
> Or is there a way to monitor interupts in QEMU?
> Or maybe I just missed to change an other base address while migrating
> from Board Rev.B to rev.C?
> 
> Any ideas or comments are welcome!

Please check my patch [1]. If it helps (or can be extended to help), 
some support to get it merged would be appreciated. :)

Jan

[1] http://permalink.gmane.org/gmane.comp.emulators.qemu/22988