From: xmerm05 AT vse DOT cz (Michal Mertl)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: MMX Support
Date: Fri, 29 Aug 1997 13:08:38
Organization: University of Economics - Prague, CZ
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Jason Nye <jnye AT nbnet DOT nb DOT ca> wrote:
>I am a new djgpp user and I was just wondering if anyone has heard if
>there are any plans to support MMX registers in any future versions of
>djgpp (or in the assembler).  This would be really nice since a common
>operation can be performed to all of them in parallel in one clock cycle
>(excellent for matrix stuff).
First of all DJGPP is just a port of GCC for dos, so there are no plans to 
support anything in DJGPP what isn't in GCC. DJGPP(GCC) doesn't output any 
instructions specific to processors higher than 386 with coprocessor. But 
in assembler you can use it already. Either you can use NASM which supports 
them (using Intel syntax asm), or you can, using some macros, use them in 
GAS assembler also (AT&T syntax). Look at "Pentium profiling tools" in DJGPP 
section on http://www.goof.com/pgc/ there is header file which uses RDMSR/
WRMSR instructions not supported by GAS.
Michal 'MiMe' Mertl
e-mail:XMERM05 AT vse DOT cz