3 Commits (544eb82a477e5ca43a9cc2f94e9d689a7bbc5265)

Author	SHA1	Message	Date
Kevin Bracey	c799dc3332	ARMC5: fix mbed_atomic_impl.h assembly	2019-05-16 13:06:16 +03:00
Kevin Bracey	2bb40450ec	Add non-volatile atomic loads and stores ... Volatile makes no real difference when we're using assembler, or locked functions, but leaving it off could be more efficient for the basic loads and stores. So add non-volatile overloads in C++ for them.	2019-04-26 13:12:35 +03:00
Kevin Bracey	87396e0bf6	Assembler atomics ... Reimplement atomic code in inline assembly. This can improve optimisation, and avoids potential architectural problems with using LDREX/STREX intrinsics. API further extended: * Bitwise operations (fetch_and/fetch_or/fetch_xor) * fetch_add and fetch_sub (like incr/decr, but returning old value - aligning with C++11) * compare_exchange_weak * Explicit memory order specification * Basic freestanding template overloads for C++ This gives our existing C implementation essentially all the functionality needed by C++11. An actual Atomic<T> template based upon these C functions could follow.	2019-04-26 13:12:35 +03:00