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

[Måns Rullgård]

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

-- 
M?ns Rullg?rd
mru at inprovide.com