Re: [Simulavr-devel] ATmega328 Emulation

[David Madden]

On 02/17/2011 07:57 AM, Petr Hluzín wrote:

> Actually this is a bug in simulavr. In file src/cmd/gdbserver.cpp in
> function GdbServer::gdb_read_memory(const char *pkt) change these
> lines:

Thanks, Petr.  (I had started looking at the GDB debugging output from 
Simulavr, and it appeared that the problem was in there -- GDB was 
asking for reasonable things, but the simulator was reporting things 
wrong.  I was going to start debugging Simulavr tonight.)

I'll make your changes and see what happens.

> Simulavr also eats 100% CPU when waiting for GDB. What a shame, I
> should fix that before anyone notices. :) (But I did not write the
> crappy function.)

That would be great -- I had noticed that problem too, but I thought 
maybe the simulator was in "Run" state except when GDB tells it to stop 
at a breakpoint?  But this sounds like a busy-waiting loop in the read() 
from GDB.  Who writes code like that?  :-)

Regards,
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