Messages in this thread | | | Subject | Re: PATCH: (on Alpha) emulating missing instructions | Date | Fri, 15 Oct 1999 14:06:04 +0100 (BST) | From | Alan Cox <> |
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> We already have FPU emulation in kernel, and there
That should probably have been in userspace.
> exists a project to emulate MMX/3dnow!/EMMX instructions > at http://www-sop.inria.fr/prisme/personnel/pion/progs/mmx-emu/ > Would there be any benefit if such a project were integrated > into the kernel? Other than allowing 386's to run MMX apps > without needing a recompile. :-)
No. The usage guidelines for MMX are explicit - you must test for the availability and provide fallbacks. If code doesn't work on a box without MMX and provides no option to do so then as far as the MMX programming guides go - its broken.
Similarly the right answer for the Loki game is probably to build it with different compiler options, not to stick some emulator in the kernel
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