On Tue, May 15, 2018 at 04:43:33PM +0100, Mark Rutland wrote: > I put together the following while trying to avoid bash magic (i.e the > arrays, and keeping the option of naming the params. My local copy of > dash seems happy with it.
Very nice; clearly your sh foo is stronger than mine ;-) > I *think* the table can encode enough info to generate atomic-long.h, > atomic-instrumented.h, and the atomic.h ordering fallbacks. I'll need to > flesh out the table and check that we don't end up clashing with > some of the regular fallbacks. Yes, details details ;-) > # name meta args... > # > # Where meta contains a string of: > # * B - bool: returns bool, fully ordered > # * V - void: returns void, fully ordered void retuns are relaxed > # * I - int: returns base type, all orderings > # * R - return: returns base type, all orderings > # * F - fetch: returns base type, all orderings > # * T - try: returns bool, all orderings Little more verbose than mine, I think we can get there with X and XB instead of I and T, but whatever :-) > # Where args contains list of type[:name], where type is: > # * v - pointer to atomic base type (atomic or atomic64) > # * i - base type (int or long) > # * I - pointer to base type (int or long) > # > add VRF i v > sub VRF i v > inc VRF v > dec VRF v > or VF i v > and VF i v > andnot VF i v > xor VF i v > xchg I v i > cmpxchg I v i:old i:new > try_cmpxchg T v I:old i:new > add_and_test B i v > sub_and_test B i v > dec_and_test B v > inc_and_test B v Cute, that [:name].
