From: Daniel Jacobowitz <dan@debian.org>
To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Cc: Hartvig Ekner <hartvige@mips.com>,
"Kevin D. Kissell" <kevink@mips.com>,
Tor Arntsen <tor@spacetec.no>,
Carsten Langgaard <carstenl@mips.com>,
Ralf Baechle <ralf@linux-mips.org>,
linux-mips@linux-mips.org
Subject: Re: 64-bit and N32 kernel interfaces
Date: Thu, 5 Sep 2002 11:14:09 -0400 [thread overview]
Message-ID: <20020905151409.GA25023@nevyn.them.org> (raw)
In-Reply-To: <Pine.GSO.3.96.1020905170830.7444E-100000@delta.ds2.pg.gda.pl>
On Thu, Sep 05, 2002 at 05:10:51PM +0200, Maciej W. Rozycki wrote:
> On Thu, 5 Sep 2002, Daniel Jacobowitz wrote:
>
> > No - the point is that all data types have the same size in N32. It
> > was created explicitly as a transitional sop for people who didn't want
> > to fix their code, but wanted a performance increase from their 64-bit
> > hardware.
>
> Well, what's the performance increase of n32 over o32? The increased
> number of argument registers? I doubt it's noticeable in most cases.
N32 supports saving and restoring 64-bit registers, which O32 doesn't -
according to some comments in GCC, O32 is in fact incompatible with
using 64-bit operations.
--
Daniel Jacobowitz
MontaVista Software Debian GNU/Linux Developer
next prev parent reply other threads:[~2002-09-05 15:14 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-05 9:30 64-bit and N32 kernel interfaces Tor Arntsen
2002-09-05 11:47 ` Maciej W. Rozycki
2002-09-05 12:48 ` Kevin D. Kissell
2002-09-05 12:48 ` Kevin D. Kissell
2002-09-05 14:09 ` Maciej W. Rozycki
2002-09-05 14:20 ` Hartvig Ekner
2002-09-05 14:20 ` Hartvig Ekner
2002-09-05 14:54 ` Maciej W. Rozycki
2002-09-05 14:59 ` Daniel Jacobowitz
2002-09-05 15:10 ` Maciej W. Rozycki
2002-09-05 15:14 ` Daniel Jacobowitz [this message]
2002-09-05 16:16 ` Maciej W. Rozycki
2002-09-05 16:19 ` Daniel Jacobowitz
2002-09-05 16:33 ` Maciej W. Rozycki
2002-09-05 16:39 ` Daniel Jacobowitz
2002-09-05 17:16 ` Maciej W. Rozycki
2002-09-05 17:29 ` Kevin D. Kissell
2002-09-05 17:29 ` Kevin D. Kissell
2002-09-05 19:34 ` Maciej W. Rozycki
2002-09-06 9:42 ` Ralf Baechle
2002-09-05 18:07 ` Hartvig Ekner
2002-09-05 18:07 ` Hartvig Ekner
2002-09-05 18:54 ` Maciej W. Rozycki
2002-09-05 19:16 ` Thiemo Seufer
2002-09-06 9:30 ` Ralf Baechle
2002-09-05 14:22 ` Daniel Jacobowitz
2002-09-05 15:08 ` Maciej W. Rozycki
2002-09-05 15:14 ` Daniel Jacobowitz
2002-09-05 16:28 ` Maciej W. Rozycki
2002-09-05 16:30 ` Thiemo Seufer
2002-09-05 16:54 ` Maciej W. Rozycki
2002-09-05 17:44 ` Thiemo Seufer
2002-09-05 19:50 ` Maciej W. Rozycki
2002-09-05 22:12 ` Thiemo Seufer
2002-09-09 17:39 ` Maciej W. Rozycki
2002-09-06 10:14 ` Ralf Baechle
2002-09-09 14:01 ` Dominic Sweetman
-- strict thread matches above, loose matches on Subject: below --
2002-09-04 13:56 Ralf Baechle
2002-09-04 14:14 ` Maciej W. Rozycki
2002-09-04 14:31 ` Ralf Baechle
2002-09-04 15:19 ` Maciej W. Rozycki
2002-09-04 18:46 ` Ralf Baechle
2002-09-05 9:53 ` Maciej W. Rozycki
2002-09-05 6:40 ` Carsten Langgaard
2002-09-05 9:23 ` Maciej W. Rozycki
2002-09-05 13:41 ` Daniel Jacobowitz
2002-09-04 17:32 ` Jun Sun
2002-09-04 17:56 ` Maciej W. Rozycki
2002-09-04 18:40 ` Ralf Baechle
2002-09-05 10:15 ` Kjeld Borch Egevang
2002-09-05 10:15 ` Kjeld Borch Egevang
2002-09-09 20:20 ` Jay Carlson
2002-09-16 13:01 ` Ralf Baechle
2002-09-16 15:40 ` Ralf Baechle
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