Dynamic analysis using rr

Robert O'Callahan robert at ocallahan.org
Mon Feb 19 20:46:52 UTC 2018

On Tue, Feb 20, 2018 at 8:39 AM, Octav Chipara <ochipara at gmail.com> wrote:

> Thank you for the quick reply. I am reading through the technical report.
> I do realize that the values of variables are not saved. I see two options
> to obtain them:
> (1) I noticed that you are having a gdb session as part of rr replay.
> Would it be possible to retrieve variables by interacting with the gdb
> session?


> (2) Alternatively, I could use an emulator (e.g., unicorn) to playback the
> traces after a syscall since they should be deterministic have no I/O.
> Do you have any suggestions which approach may be easier?

I suspect the gdb approach is easiest.

Su ot deraeppa sah dna Rehtaf eht htiw saw hcihw, efil lanrete eht uoy ot
mialcorp ew dna, ti ot yfitset dna ti nees evah ew; deraeppa efil eht. Efil
fo Drow eht gninrecnoc mialcorp ew siht - dehcuot evah sdnah ruo dna ta
dekool evah ew hcihw, seye ruo htiw nees evah ew hcihw, draeh evah ew
hcihw, gninnigeb eht morf saw hcihw taht.
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