Actually, you have to turn alignment traps on for the networking layer
to work.
Nicholas Clark wrote:
> On Thu, Jan 25, 2001 at 12:48:10PM +0000, Michael Nonweiler wrote:
> > I am worried about remaining problems with unaligned accesses to word and
> > short data.
>
> Have you experimented yet with a conventional ARM Linux setup where you
> recompile a kernel with the alignment trap handler turned on?
> You shuld be able casts in C to manufacture unaligned pointers to trigger
> the traps (IIRC it reports usage in /proc somewhere) and see if it correctly
> fixes up the results of unaligned pointer reads and writes.
> If the alignment trap handler works (in user space?) what classes of remaining
> problems are you worried about?
>
> > I would like to experiment with an ARM Linux setup that uses gcc modified
> > for x86 structure packing. Brian mentions that some people are going to be
> > experimenting with compilers configured this way.
> >
> > ** Has anyone produced such a system? **
>
> I am unaware of such a system. However, I have not been keeping a lookout
> for one.
>
> Nicholas Clark
>
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