[Ffmpeg-devel] [Ffmpeg-devel-old] [PATCH] osx only support dcblz instruction on 64-bit implementations

Michael Niedermayer michaelni
Mon Apr 25 10:47:09 CEST 2005


On Monday 25 April 2005 03:44, Nicolas Plourde wrote:
> > furthermore the whole things looks somehow broken to me, i dont belive
> > that the instruction has been dropped in later assemblers
> You dont need to believe me. But this instruction IS specific to G5
> processor and is not supported by gcc-4.x on 32bit implementation.
> The build fail on mac osx 10.4(default compiler is gcc 4.0), but
> whatever, its not like ppl use mac anyway.
> > and even if then the solution would be to hardcode its bytes bypassing
> > the crap assembler
> hard code its bytes? How can this be useful, please develop your idea
> some more.

well if older cpus dont support the instrunction, then its availablity should 
be checked at runtime, so its needed to assemble it for the case that it is 


"nothing is evil in the beginning. Even Sauron was not so." -- Elrond

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