Help! isync, exceptions, dummy function problems with RTEMS (near-head) PowerPC/virtex BSP

Robert S. Grimes rsg at
Thu Aug 9 19:19:28 UTC 2007

Joel Sherrill wrote:
> Thank you.  I really do want to get from 4.7->4.8 faster
> than 4.5->4.6 or 4.6->4.7.
I'm installing it now - I'll see if there is any difference wrt my
current difficulties, and report.  If the problems are still there, at
least I can comment out the dummy function and get you some feedback on
the virtex BSP.
> I suspect this is the classic problem that the BSP left
> an interrupt source enabled that should be disabled.
> You have an interrupt pending when the first context
> switch enables interrupts and it doesn't have a handler.
Which problem are you referring to?  Probably not the Dummy Function
Problem, right?
> Double check the BSP interrupt initialization.  It needs
> to clear/disable all sources and let individual drivers
> enable the ones they will handle.
I'm not convinced, as things were working until just very recently.  I
think the BSP is okay, is what I'm saying.  But since I have added an
interrupt handler in my application code, perhaps it is that?  But
again, it was working for quite some time before these exceptions
started showing up.


More information about the users mailing list