Subject: Re: mips SOFTFLOAT kernel config option
To: Jonathan Stone <jonathan@DSG.Stanford.EDU>
From: Ignatios Souvatzis <>
List: tech-kern
Date: 10/04/1999 12:37:21
On Tue, Sep 28, 1999 at 09:12:40PM -0700, Jonathan Stone wrote:
> Like ptrace()/procfs access to userlevel fp registers?  (same deal, really).
> Also kernel-debugger register-dump code.
> How do other ports handle this (e.g., mac68k on FPU-less 68040LC)?
> Is that a model the mips ports should follow?

The m68k kernel FPE code just emulates registers, too. On m68k, You need FPU
operations to access registers, so this is easy.

Now, a real soft-float-compiled program would not access them at all...
but debuggers etc. trying to access them will still need the emulation in 
the kernel.


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