CTIMERxCFG suggestion for future hardware

[notzed]

Most of the ctimer configuration is taken up with debugging and profiling functionality. Whilst real-time applications could use the clock counter for timing, they aren't really any use for computational blocks once the debugging and profiling is done with.

But with a small change they could be: add a timing mode which counts how many times the timer value register is read.

This could be used to implement up to 2x atomic counters per core which is a useful feature for implementing various parallel algorithms efficiently.

[aolofsson]

Nice!! I always like reusing hardware for other purposes. There are quite a few reserved bits in there right now, so let me think about it for Epiphany-V:-)

Original plan was to expand on TESTSET to add more functions like FETCH AND ADD/SUB etc...

Andreas

[notzed]