[Openmcl-devel] ARM testing

David Brown lisp at davidb.org
Thu Jan 20 03:36:34 UTC 2011


On Wed, Jan 19 2011, Gary Byers wrote:

> Bootstrapping that change is a bit complicated (it affects how consing
> works, among other things.)  While trying to get things working in the
> trunk, I added a workaround in the CCL kernel: if we get an illegal
> instruction exception and the instruction is a conditional trap whose
> condition was false, just skip over the instruction.  That enables code
> to run, but there's noticeable overhead (we spend a lot oftime handling
> and ignoring conditional traps that are being executed unconditionally.)
> If that change was backported to 1.6, you'd at least be able to run.

Would it be easier to just checkin a new image for arm?  I don't mind
running trunk.

>> The CPU is an ARM v7 (QSD8x50, same as what's in the Nexus One).
>
> I missed that on first reading.  It just so happens that my phone is
> a Nexus One, so my confidence in this explanation just went from ~90%
> to ~100%.

Have you found much change needed between Android and libc?  Android's
libc is kind of spartan, and only tends to implement what they needed
for Android itself.

Thanks,
David



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