Re: [Qemu-devel] TCG questions

[Xin Tong]

On Wed, Sep 12, 2012 at 6:14 AM, Lluís Vilanova <address@hidden> wrote:
> Xin Tong writes:
>
>> i do not know. could be similar. I am doing architecture research. i
>> need traces of memory access for programming running under a full
>> system environment, so i wrote this.
>
>> i do nto seem to be able to access the linked provided from the link
>> you give me though.
>
>> https://projects.gso.ac.upc.edu/projects/qemu-dbi/wiki
>
> Well, if you tried to access it during the last few days, we've been having 
> some
> issues with the server.
>
> It should all work now.
>
> The main idea is to have an API similar in spirit to that of PIN [1]. You can
> have a look at the instrumentation docs [2] for some simple examples.
>
> I had some plans to modify QEMU's address translation mechanism to provide a
> performant mechanism to retrieve physical addresses (traces of virtual 
> addresses
> are already supported), but that will have to wait until I finish some other
> unrelated tasks.
>
>
> [1] http://pintool.org
> [2] 
> https://projects.gso.ac.upc.edu/projects/qemu-dbi/repository/entry/docs/instrumentation.txt#L202

By the way Luis. this is exactly what i am doing. i am writing up a
ISPASS paper for this as well. I am also using PIN to verify the
instrumentation interface.

Xin

>
> Lluis
>
>
>
>> On Tue, Sep 11, 2012 at 6:52 PM, 陳韋任 (Wei-Ren Chen)
>> <address@hidden> wrote:
>>>> I have created a set of instrument API on QEMU. one can write client
>>>> programs that compile into shared library. the shared library is then
>>>> loaded into qemu and extract statistics out of QEMU.
>>>
>>> Instrument API? Same as what Liuis did?
>>>
>>> Regards,
>>> chenwj
>>>
>>> [1] http://lists.gnu.org/archive/html/qemu-devel/2012-09/msg00379.html
>>>
>>> --
>>> Wei-Ren Chen (陳韋任)
>>> Computer Systems Lab, Institute of Information Science,
>>> Academia Sinica, Taiwan (R.O.C.)
>>> Tel:886-2-2788-3799 #1667
>>> Homepage: http://people.cs.nctu.edu.tw/~chenwj
>
>
> --
>  "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