| To: | Ralf Baechle <ralf@linux-mips.org> |
|---|---|
| Subject: | Re: gcc support of mips32 release 2 |
| From: | "Maciej W. Rozycki" <macro@ds2.pg.gda.pl> |
| Date: | Fri, 19 Mar 2004 14:47:02 +0100 (CET) |
| 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> |
| In-reply-to: | <20040318213713.GC25815@linux-mips.org> |
| Organization: | Technical University of Gdansk |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20040305075517.42647.qmail@web40404.mail.yahoo.com> <1078478086.4308.14.camel@dzur.sfbay.redhat.com> <16456.21112.570245.1011@arsenal.mips.com> <Pine.LNX.4.55.0403181404210.5750@jurand.ds.pg.gda.pl> <20040318213713.GC25815@linux-mips.org> |
| Sender: | linux-mips-bounce@linux-mips.org |
On Thu, 18 Mar 2004, Ralf Baechle wrote:
> 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.
But m68k isn't exactly RISC and high code density was a priority over
microcode simplicty (or absence) for the architecture.
--
+ Maciej W. Rozycki, Technical University of Gdansk, Poland +
+--------------------------------------------------------------+
+ e-mail: macro@ds2.pg.gda.pl, PGP key available +
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