Messages in this thread | | | Date | Sun, 28 Jun 1998 18:51:00 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: MMX emulator ? |
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On Mon, 15 Jun 1998, Sylvain Pion wrote:
>Hi, > >I wondered whether there has been some thoughts about implementing an MMX >emulator in the kernel, something like the FPU emulator. It sounds like a
Intel say that it' s impossible. From 24319201.pdf section 10.1:
10.1. EMULATION OF THE MMX INSTRUCTION SET
The Intel Architecture does not support emulation of the MMX technology, as it does for floating-point instructions. The EM flag in control register CR0 (provided to invoke emulation of floating-point instructions) cannot be used for MMX instruction emulation. If an MMX instruction is executed when the EM flag is set, an invalid opcode (UD#) exception is generated.
Andrea[s] Arcangeli
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