[FFmpeg-devel] [PATCH] avcodec/x86/cavsdsp: Put MMX code under mmx check

Michael Niedermayer michael at niedermayer.cc
Sun Mar 5 12:54:29 EET 2017


On Sun, Mar 05, 2017 at 12:00:16AM -0300, James Almer wrote:
> On 3/4/2017 11:42 PM, Michael Niedermayer wrote:
> > Without this the FPU state becomes trashed and causes mysterious
> > fate failures with cpuflags=0
> > 
> > Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> > ---
> >  libavcodec/x86/cavsdsp.c | 4 +++-
> >  1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/libavcodec/x86/cavsdsp.c b/libavcodec/x86/cavsdsp.c
> > index 4b20e655a7..d5c63c5128 100644
> > --- a/libavcodec/x86/cavsdsp.c
> > +++ b/libavcodec/x86/cavsdsp.c
> > @@ -565,7 +565,9 @@ av_cold void ff_cavsdsp_init_x86(CAVSDSPContext *c, AVCodecContext *avctx)
> >  {
> >      av_unused int cpu_flags = av_get_cpu_flags();
> >  
> > -    cavsdsp_init_mmx(c, avctx);
> > +    if (INLINE_MMXEXT(cpu_flags))
> 
> This should be MMX, not MMXEXT. Also some of the functions are yasm/nasm, not inline.
> Either add INLINE_MMX() and EXTERNAL_MMX() inside cavsdsp_init_mmx() where needed,
> or use X86_MMX() here.

interrestingly, i saw this issue when i copy and pasted this and
intended to fix it before posting the patch. Quite obviously i didnt
must have been distracted ...

ill fix these before applying

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Concerning the gods, I have no means of knowing whether they exist or not
or of what sort they may be, because of the obscurity of the subject, and
the brevity of human life -- Protagoras
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