linux-mips
[Top] [All Lists]

Re: Decstation 5000/150 2.3.21 Boot successs

To: Harald Koerfgen <Harald.Koerfgen@home.ivm.de>
Subject: Re: Decstation 5000/150 2.3.21 Boot successs
From: Ralf Baechle <ralf@oss.sgi.com>
Date: Sat, 8 Jan 2000 00:29:11 +0100
Cc: "William J. Earl" <wje@cthulhu.engr.sgi.com>, linux@cthulhu.engr.sgi.com, Florian Lohoff <flo@rfc822.org>, "Kevin D. Kissell" <kevink@mips.com>
In-reply-to: <XFMail.000107200905.Harald.Koerfgen@home.ivm.de>
References: <14452.58782.750095.352886@liveoak.engr.sgi.com> <XFMail.000107200905.Harald.Koerfgen@home.ivm.de>
Sender: owner-linuxmips@oss.sgi.com
On Fri, Jan 07, 2000 at 08:09:05PM +0100, Harald Koerfgen wrote:

> On 06-Jan-00 William J. Earl wrote:
> >      Note that the SVR4 MIPS ABI assumes FR=0 (R3000-compatible), as
> > do SGI IRIX "-32" ("O32") binaries (and, I believe, default gcc
> > binaries).  SGI IRIX "-n32" and "-n64" binaries assumes FR=1
> > (R4000-compatible), and also have a somewhat different register calling
> > convention (which affects where arguments to system calls reside).
> 
> Wouldn't it make sense then if we made FR=0 the default for Linux/MIPS?

Obviously; you can clear that flag painless somewhere in
arch/mips/kernel/traps.c only for those CPUs that actually have it.

  Ralf

<Prev in Thread] Current Thread [Next in Thread>