Date: Thu, 9 Nov 1995 11:25:53 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: phk@critter.tfs.com (Poul-Henning Kamp) Cc: koshy@blr.novell.com, hasty@rah.star-gate.com, freebsd-hackers@freebsd.org Subject: Re: Load/Store using FPU regs ... Message-ID: <199511091025.LAA08155@labinfo.iet.unipi.it> In-Reply-To: <6254.815905738@critter.tfs.com> from "Poul-Henning Kamp" at Nov 9, 95 09:28:39 am
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> > Now, I'm not sure if this approach can be used across all processors. > > Some FPU's could raise exceptions if illegal bit-patterns are loaded > > into its registers. The x86 FPU in particular has very few registers > > and a LIFO access pattern for loads and stores so I don't know if the > > same trick would work well for it. > > Not to mention that you might not have a FPU. So what ? You still have the FPU emulator :) Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
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