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Re: [Qemu-devel] Register usage statistics?
From: |
Lluís |
Subject: |
Re: [Qemu-devel] Register usage statistics? |
Date: |
Fri, 26 Aug 2011 19:35:02 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) |
Benjamin Ylvisaker writes:
> I am working on a project for which I'd like to gather statistics
> about register usage. (For example, distributions of degree-of-use
> and dynamic lifetimes of register-values.) Is QEMU a good tool for
> doing this kind of work? Has anyone else done this? I looked at the
> tracing available in QEMU and it seems to be mostly for higher level
> things like memory accesses, function calls, basic block executions,
> etc.
This is not currently possible.
In fact, I've been developing (somewhat in the background) the kind of
features you're asking for, but it will still be at least a couple of
months before it's in a publishable state.
Meanwhile, there are some tools you can use to accomplish this
(depending on your requirements), like valgrind or pintool.
Lluis
--
"And it's much the same thing with knowledge, for whenever you learn
something new, the whole world becomes that much richer."
-- The Princess of Pure Reason, as told by Norton Juster in The Phantom
Tollbooth