[Ffmpeg-cvslog] CVS: ffmpeg/libavcodec bitstream.h,1.151,1.152

[Michael Niedermayer]

Hi

On Thursday 12 May 2005 22:37, M?ns Rullg?rd wrote:
> Michael Niedermayer <michaelni at gmx.at> writes:
> > Hi
> >
> > On Thursday 12 May 2005 21:11, M?ns Rullg?rd wrote:
> >> michael at mplayerhq.hu (Michael Niedermayer CVS) writes:
> >> > -#ifdef ARCH_SPARC
> >> > +#if defined(ARCH_SPARC) || defined(ARCH_ARMV4L)
> >> >  #define UNALIGNED_STORES_ARE_BAD
> >> >  #endif
> >>
> >> Why doesn't this bite other non-x86 CPUs?
> >
> > because they either can do unaligned accesses directly or the kernel
> > catches and emulates them, AFAIK in the ARM case this isnt done by
> > default
>
> On Alpha, you get a message in the kernel log if there are unaligned
> accesses.  Running ffmpeg, I don't get any.  

well, maybe you are running it with the wrong parameters, look at the original 
bugreport if not then maybe the whole UNALIGNED_STORES_ARE_BAD thing can be 
removed


> On SPARC/Solaris 
> unaligned accesses cause a SIGBUS and core dump.

on ARM you get pseudo random data silently

-- 
Michael