From: Ralf Baechle <ralf@linux-mips.org>
To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Cc: Dominic Sweetman <dom@mips.com>,
Eric Christopher <echristo@redhat.com>,
Long Li <long21st@yahoo.com>,
linux-mips@linux-mips.org, David Ung <davidu@mips.com>,
Nigel Stephens <nigel@mips.com>
Subject: Re: gcc support of mips32 release 2
Date: Thu, 18 Mar 2004 22:37:13 +0100 [thread overview]
Message-ID: <20040318213713.GC25815@linux-mips.org> (raw)
In-Reply-To: <Pine.LNX.4.55.0403181404210.5750@jurand.ds.pg.gda.pl>
On Thu, Mar 18, 2004 at 02:18:01PM +0100, Maciej W. Rozycki wrote:
> As a side note, it makes me wonder where the borderline of the RISC
> actually is. Even Intel abandoned support for bit insert/extract
> instructions after an initial attempt for the i386. They figured out the
> implementation was too complicated. ;-)
Take a look at the 68020 to see where instruction set madness can lead:
movel ([42, a0, d0.2*2],123), ([43, a0, d0.2*2], 22)
bfextu ([42, a0, d0.2*2],123){8:8}, d2
And I haven't even started bitching about CALLM's bloat over jsr on a
system with MMU disabled or the fantastic complexities it offers with
all gadgets enabled. Probably desigend for MACH but in the end just
useless no known OS used them and Moto removed them again for the 030.
Ralf
next prev parent reply other threads:[~2004-03-18 21:37 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-05 7:55 gcc support of mips32 release 2 Long Li
2004-03-05 9:14 ` Eric Christopher
2004-03-05 10:12 ` Dominic Sweetman
2004-03-05 10:12 ` Dominic Sweetman
2004-03-05 17:03 ` Long Li
2004-03-08 11:11 ` Dominic Sweetman
2004-03-08 12:15 ` David Ung
2004-03-08 17:45 ` Eric Christopher
2004-03-18 13:18 ` Maciej W. Rozycki
2004-03-18 14:10 ` Dominic Sweetman
2004-03-18 21:19 ` Ralf Baechle
2004-03-19 13:44 ` Maciej W. Rozycki
2004-03-22 9:42 ` Dominic Sweetman
2004-03-22 11:14 ` Maciej W. Rozycki
2004-03-22 14:49 ` Dominic Sweetman
2004-03-22 16:19 ` Michael Uhler
2004-03-18 16:52 ` Michael Uhler
2004-03-18 21:37 ` Ralf Baechle [this message]
2004-03-19 10:42 ` Geert Uytterhoeven
2004-03-19 12:55 ` Ralf Baechle
2004-03-24 12:38 ` Goswin von Brederlow
2004-03-24 13:52 ` Ralf Baechle
2004-03-24 17:57 ` Dominic Sweetman
2004-03-19 13:47 ` Maciej W. Rozycki
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