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Re: [Qemu-devel] [PATCH] microblaze: Add support for the clz insn
From: |
Edgar E. Iglesias |
Subject: |
Re: [Qemu-devel] [PATCH] microblaze: Add support for the clz insn |
Date: |
Tue, 10 Jan 2012 16:41:12 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Tue, Jan 10, 2012 at 03:37:51PM +0000, Peter Maydell wrote:
> On 10 January 2012 10:27, Edgar E. Iglesias <address@hidden> wrote:
> > +uint32_t helper_clz(uint32_t t0)
> > +{
> > + if (t0 == 0) {
> > + return 32;
> > + }
> > + if (t0 == ~0) {
> > + return 0;
> > + }
> > + return clz32(t0);
> > +}
>
> I think clz32() handles both the 0 and 0xffffffff cases correctly,
> so they don't need special-casing.
That seems to be the case, I'll fix that, thanks.
Cheers
- [Qemu-devel] [PATCH] microblaze: Add support for the clz insn, Edgar E. Iglesias, 2012/01/10
- [Qemu-devel] [PATCH] etraxfs-dma: Model metadata and eop, Edgar E. Iglesias, 2012/01/10
- [Qemu-devel] [PATCH] microblaze: Break the tb at memory barriers, Edgar E. Iglesias, 2012/01/10
- [Qemu-devel] [PATCH] microblaze: Emulate the hw stackprotector, Edgar E. Iglesias, 2012/01/10
- Re: [Qemu-devel] [PATCH] microblaze: Add support for the clz insn, Peter Maydell, 2012/01/10
- Re: [Qemu-devel] [PATCH] microblaze: Add support for the clz insn,
Edgar E. Iglesias <=
- Re: [Qemu-devel] [PATCH] microblaze: Add support for the clz insn, Richard Henderson, 2012/01/11