[theora-dev] Theora MMX and Mac OS X Intel

[Felipe Portavales Goldstein]

Maybe , instead a MOV, you could do an ADD with a Zero immediate
something like that:

ADD di, edi, 0

I dont know MMX assembly code, so I dont know if it is possible.
just an idea...



On 6/21/06, j at v2v.cc <j at v2v.cc> wrote:
> hi,
>
> i was trying to enable the mmx code on mac os x.
> to get to that point one has to replace some inline assembler code:
> .balign 16  ->  .p2align 4
> and replace .rept .. .endr with #defines.
>
> but to makes things more complicated apple's GAS does not support
> movsx instructions and thus the following line does not work:
> "  movsx       %%di, %%edi      \n\t"
> [ more details at https://trac.xiph.org/browser/trunk/theora/lib/
> x86_32/dsp_mmx.c#L443 ]
>
> if anyone has an idea how that could be replaced or written in a way
> that it works
> on OS X, please let me know. making asm optimization available for os
> x intel would be nice.
>
> j
>
>
>
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-- 
________________________________________
Felipe Portavales <portavales at gmail.com>
Undergraduate Student - IC-UNICAMP
Computer Systems Laboratory
http://www.lsc.ic.unicamp.br