Messages in this thread | | | From | "Gaspy Silverleaf" <> | Subject | Re: Linux support for Intel MMX CPU's | Date | Wed, 21 Aug 1996 22:44:00 -0500 |
| |
I believe we're going to have problems with asm written towards MMX and making use of the fpu registers, especially if they miss-use the registers. But it might be helpful to have a library based and optimized for MMX?? Any Volunteers?? :)
---------- > From: Bernd Eckenfels <ecki@inka.de> > To: submit-linux-dev-kernel@ratatosk.yggdrasil.com > Subject: Re: Linux support for Intel MMX CPU's > Date: mardi 20 août 1996 14:35 > > Michel LESPINASSE <walken@via.ecp.fr> wrote: > : >From what I've read on the MMX documentations (available at > : http://www.intel.com/pc-supp/multimed/mmx/prm.htm), and from what I've > : been told by some programmers that have access to the current versions of > : this chip, the OS does not have to be aware of the MMX to let the > : applications use it. The MMX registers are aliased on the FP stack, > : so any context-switching routine that is able to save the FPU state, will > : be able to use the MMX state. > > The problem with this is, that the FPU is not available in the Usercontext > which uses MMX commands. The question is, if this will work with current > libc/ctr0.o stuff. > > Greetings > Bernd > -- > (OO) -- Bernd_Eckenfels@Wittumstrasse13.76646Bruchsal.de -- > ( .. ) ecki@lina.{inka.de,ka.sub.org} http://home.pages.de/~eckes/ > o--o *plush* 2048/93600EFD eckes@irc +4972573817 *plush* > (O____O) If privacy is outlawed only Outlaws have privacy
| |