From: Ralf Baechle <ralf@oss.sgi.com>
To: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>
Cc: linux-mips@oss.sgi.com
Subject: Re: system.h asm fixes
Date: Tue, 18 Jun 2002 02:52:04 +0200 [thread overview]
Message-ID: <20020618025204.A28165@dea.linux-mips.net> (raw)
In-Reply-To: <20020617223650.GD20335@rembrandt.csv.ica.uni-stuttgart.de>; from ica2_ts@csv.ica.uni-stuttgart.de on Tue, Jun 18, 2002 at 12:36:50AM +0200
On Tue, Jun 18, 2002 at 12:36:50AM +0200, Thiemo Seufer wrote:
> Ralf Baechle wrote:
> [snip]
> > > Looks to me like we're missing some proper asm clobber markers:
> >
> > No, as per convention $1 is never used by the compiler per convention,
> > so clobbering not necessary. I recently removed all "$1" clobbers to
> > make the code a bit easier to read.
>
> How can this work? A grep shows many instances of $1 usage,
Uses by assembler code only, not gcc. Therefoe we don't need to protect
C code against use of $at.
> I don't think all of this code is interrupt safe.
How this should relate to interrupts is beyond me. Exception handlers do
their own register saving thing.
Ralf
next prev parent reply other threads:[~2002-06-18 0:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-17 18:20 system.h asm fixes Justin Carlson
2002-06-17 19:43 ` Daniel Jacobowitz
2002-06-17 19:58 ` Thiemo Seufer
2002-06-17 20:44 ` Ralf Baechle
2002-06-17 22:36 ` Thiemo Seufer
2002-06-17 22:57 ` Justin Carlson
2002-06-18 0:52 ` Ralf Baechle [this message]
2002-06-19 17:16 ` Maciej W. Rozycki
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