[panda-users] Programmatic replay?

[Brendan Dolan-Gavitt]

1. Observation only. Changing program state would cause execution to
diverge from the original recording, and because of the interface we
use for recording, it is not possible to "go live" from that point.
You can find more details on why this is so in our tech report [1],
specifically section 2.A

2. Currently the only way to move to a particular point in a replay is
to start from the beginning and then execute until the desired point.
It is not possible to rewind or fast-forward. In principle one could
index a replay log in order to allow jumping to arbitrary points in
it, but this hasn't been implemented. One alternative if you have a
large replay and want to selectively act on a portion of it is to use
the scissors plugin, which can extract out a segment of a larger
replay.

-Brendan

[1] https://mice.cs.columbia.edu/getTechreport.php?techreportID=1588&disposition=inline&format=pdf

On Tue, Feb 24, 2015 at 8:09 AM, Igor R <boost.lists at gmail.com> wrote:
> Hello,
>
> I'm new to PANDA, and I'm trying to realise whether it matches my needs, so
> I'd appreciate your answers to a couple of basic questions:
>
> * Are the callbacks for observation only, or one can change a program state
> (register/memory) in a callback (also during replay).
>
> * Is it possible to control replay programmatically? In particular, is it
> possible to move to a specified state (eg. to the beginning of the current
> bb)?
>
> Thanks!
>
>
> _______________________________________________
> panda-users mailing list
> panda-users at mit.edu
> http://mailman.mit.edu/mailman/listinfo/panda-users
>