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Re: Decstation 5000/150 2.3.21 Boot successs

To: Harald Koerfgen <>
Subject: Re: Decstation 5000/150 2.3.21 Boot successs
From: Ralf Baechle <>
Date: Sat, 8 Jan 2000 00:29:11 +0100
Cc: "William J. Earl" <>,, Florian Lohoff <>, "Kevin D. Kissell" <>
In-reply-to: <>
References: <> <>
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.


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