On 09/04/2013 12:51 AM, nathan binkert wrote:
On Tue, Sep 3, 2013 at 3:39 PM, Steve Reinhardt <[email protected]> wrote:
On Tue, Sep 3, 2013 at 2:19 PM, Andreas Sandberg <[email protected]>wrote:
I was planning to add more features to it, but I got distracted thinking
about efficient ways to implement test cases (it's hard to get FP stuff
right!) instead. I had some ideas about using the KVM CPU to verify test
cases running on the simulated CPU, but it's all a bit half-baked at the
moment. I did that manually for the instructions I added, but I'd like to
streamline the process a bit.
On this front... didn't Gabe have some kind of tracing facility put
together where he could diff instruction effects between gem5 and a real
machine on an instruction-by-instruction basis? I don't recall the details
though. It seems like that could be really handy here.
Yes. I believe that it is the statetrace stuff. It uses ptrace to
single step through a real process on a host machine. Not sure how
ptrace interacts with KVM. Should mostly work I'd imagine.
That looks like a very useful tool. I'll give it a spin an see if it can
be used to automate my test cases.
//Andreas
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