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Date: Tue, 12 Apr 2011 06:14:28 +0400
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From: Igor Kovalenko <igor.v.kovalenko@gmail.com>
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Subject: Re: [Qemu-devel] tcg/tcg.c:1892: tcg fatal error
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To: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: Blue Swirl <blauwirbel@gmail.com>, peter.maydell@linaro.org, qemu-devel <qemu-devel@nongnu.org>, Aurelien Jarno <aurelien@aurel32.net>

On Mon, Apr 11, 2011 at 9:53 PM, Artyom Tarasenko <atar4qemu@gmail.com> wro=
te:
>
> Can do it, but I'd like to understand first what we are looking for.
> How does the main works in this case? Is it something like following?
>
> translate {brz,pn ; wrpr} -> optimize -> execute ->translate {retl ;
> ...} ->optimize -> execute.
>
> The subject error is a tcg error, so it is happening in one of the two
> translate/optimise phases drawn above, right?
> So, why are we looking at the wrpr helper code?

Because you asked about alternate globals :)

>> Do you have public test case?
>> It is possible to code this delay slot write test but real issue may
>> be corruption elsewhere.
>
> You assume ts->val_type gets corrupted? But then it must happen before
> the wrpr helper call, or actually before the =A0translation of {brz,pn ;
> wrpr} block, no?

In theory there could be multiple issues including compiler induced ones.
I'd prefer to see some kind of reproducible testcase.

--=20
Kind regards,
Igor V. Kovalenko