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Re: [Qemu-devel] cvttps2dq, movdq2q, movq2dq incorrect behaviour

From: Julian Seward
Subject: Re: [Qemu-devel] cvttps2dq, movdq2q, movq2dq incorrect behaviour
Date: Tue, 20 Jun 2006 12:48:35 +0100
User-agent: KMail/1.9.1

On Tuesday 20 June 2006 12:29, malc wrote:

> The signature of movdq2q is Pq, VRq and for movq2dq - Vo, PRq it appears
> that translate.c gets it backwards, attached patch should deal with it.


> As for cvttps2dq i ran it with interpreter which uses outdated(i.e. non
> soft-float) conversion routines and it passed, so my guess would be that
> this is float32_to_int32_round_to_zero vs (int32_t) cast issue.

I had a feeling this is a garbage-in-memory (or regs, or somewhere)
problem.  Reason is that the wrong results kept changing as I cut
the full test program down to just the small one I posted.  Can you
try on a vanilla build of i386-softmmu from cvs?


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