From: Fabrice Bellard <fabrice@bellard.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [4705] Fix div[u]2.
Date: Mon, 09 Jun 2008 10:34:05 +0200 [thread overview]
Message-ID: <484CEAFD.9020906@bellard.org> (raw)
In-Reply-To: <E1K5aWQ-0003Lh-Ac@cvs.savannah.gnu.org>
malc wrote:
> Revision: 4705
> http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4705
> Author: malc
> Date: 2008-06-09 06:06:25 +0000 (Mon, 09 Jun 2008)
>
> Log Message:
> -----------
> Fix div[u]2.
>
> Previous code assummed 32 by 32 bit divmod operation, and survived
> x86_64 test only by sheer luck. MIPS wasn't so forgiving.
Are you sure it is needed ? div[u]2 support in currently optional in
TCG. On some hosts such as PowerPC, implementing div[u] directly is
simpler. rem[u] can be implemented generically then.
Fabrice.
next prev parent reply other threads:[~2008-06-09 8:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-09 6:06 [Qemu-devel] [4705] Fix div[u]2 malc
2008-06-09 8:34 ` Fabrice Bellard [this message]
2008-06-09 20:02 ` malc
2008-06-09 20:21 ` Fabrice Bellard
2008-06-09 23:47 ` malc
2008-06-09 16:44 ` C.W. Betts
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