| To: | Thiemo Seufer <ths@networkno.de> |
|---|---|
| Subject: | Re: MIPS checksum bug |
| From: | "Maciej W. Rozycki" <macro@linux-mips.org> |
| Date: | Sat, 20 Sep 2008 00:18:49 +0100 (BST) |
| Cc: | Atsushi Nemoto <anemo@mba.ocn.ne.jp>, u1@terran.org, linux-mips@linux-mips.org |
| In-reply-to: | <20080919163538.GA22497@networkno.de> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20080917.222350.41199051.anemo@mba.ocn.ne.jp> <BD7F24AB-4B0C-4FA4-ADB3-5A86E7A4624F@terran.org> <20080919.011704.59652451.anemo@mba.ocn.ne.jp> <20080920.004319.93205397.anemo@mba.ocn.ne.jp> <Pine.LNX.4.55.0809191656030.29711@cliff.in.clinika.pl> <20080919163538.GA22497@networkno.de> |
| Sender: | linux-mips-bounce@linux-mips.org |
On Fri, 19 Sep 2008, Thiemo Seufer wrote: > > Unfortunately you can't zero-extend with a single instruction (you can > > use a single sll(v) to sign-extend), unless the R2 ISA provides some > > suitable oddity (which I haven't checked). > > AFAIR dext can do this for MIPS64 R2. Yeah, I would have thought if anything, it would be something as odd as that... Maciej |
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