From: Peter Maydell <peter.maydell@linaro.org>
To: Xin Tong <trent.tong@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
QEMU Developers <qemu-devel@nongnu.org>,
Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] Intel AVX instructions
Date: Wed, 22 Jan 2014 20:06:47 +0000 [thread overview]
Message-ID: <CAFEAcA9zUDkmjfzFCiC-T2SCsfdp+SygzOxdbrx+DBiLtqOgtQ@mail.gmail.com> (raw)
In-Reply-To: <CA+JLOivb8Q-Ym_vDxOw38pgNGoxjpYAkYnB46MLCYtM0d=-8Sg@mail.gmail.com>
On 22 January 2014 19:35, Xin Tong <trent.tong@gmail.com> wrote:
> It seems that BOCHS have AVX instructions support in interpreter. I am
> thinking an easy/reliable way to do this would be generate helper
> calls to emulate every AVX instruction and follow how BOCHS emulates
> them. Then depending on the expected frequency and difficulties, one
> can decide whether to move some of the instructions into TCG JITted
> code ?
I would recommend implementing them from scratch for QEMU
based on the Intel architecture documentation. That will produce
much nicer results.
> Also, it would be desirable to use the MMX/SSE structures and
> functions that already exist in QEMU target-i386/translate.c
It would certainly be advisable to use them where there is
commonality.
thanks
-- PMM
next prev parent reply other threads:[~2014-01-22 20:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-22 16:27 [Qemu-devel] Intel AVX instructions Xin Tong
2014-01-22 17:35 ` Paolo Bonzini
2014-01-22 19:35 ` Xin Tong
2014-01-22 20:06 ` Peter Maydell [this message]
2014-01-22 20:19 ` Richard Henderson
2014-01-22 21:57 ` Xin Tong
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