James Simmons <[EMAIL PROTECTED]> writes:
> Howdy!
>
> Passing this along from the GLX list. It appears you can't use memset to
> filling in pixel values for the framebuffer on a PowerPC.
>
> > >> One interesting thing I ran into today: memsets use the PPC dcbz
> (data
> > >> cache block zero) instruction, which is a Good Thing, but it causes a
> bus
> > >> error if you do it to the framebuffer, which is marked as uncachable.
> That
> > >> threw me for a while.
> > >
>
> Ah nice catch, now i know why ggi fails with fbdev in ppc :)
Ah, the wonderful world of dcbz. Caused me about a full work-week
of debugging glibc some months ago.
//Marcus
--
-------------------------------+------------------------------------
Marcus Sundberg | http://www.stacken.kth.se/~mackan
Royal Institute of Technology | Phone: +46 707 295404
Stockholm, Sweden | E-Mail: [EMAIL PROTECTED]
