On 12/23/2010 06:42 PM, Andreas Färber wrote:
Hi,
Am 22.12.2010 um 13:19 schrieb Stefano Bonifazi:
how can I check the number of target cpu cycles or target
instructions executed inside qemu-user (i.e. qemu-ppc)?
Is there any variable I can inspect for such informations?
QEMU's emulation is not cycle-accurate, so you will not be able to
retrieve CPU cycle info to my knowledge.
As for instructions, take a look at the -icount option.
Andreas
Hi!
Thank You very much! I understood it was not a cycle accurate
emulator.. In my case I am more interested in how many instructions the
target machine would execute rather than how many host cycles or
instructions..so I think counted fetched target instructions can be good..
Anyway how to switch on -icount option for user emulation? Setting
use_icount to 1 (or2) into exec.c does not work: the execution hangs,
and qemu_icount is not incremented..
Thank you!
Best Regards,
Stefano B.
