Differential D18450 Diff 51656 sys/mips/include/atomic.h

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sys/mips/include/atomic.h

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	#define atomic_cmpset_rel_ptr atomic_cmpset_rel_long			#define atomic_cmpset_rel_ptr atomic_cmpset_rel_long
	#define atomic_fcmpset_ptr atomic_fcmpset_long			#define atomic_fcmpset_ptr atomic_fcmpset_long
	#define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_long			#define atomic_fcmpset_acq_ptr atomic_fcmpset_acq_long
	#define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_long			#define atomic_fcmpset_rel_ptr atomic_fcmpset_rel_long
	#define atomic_load_acq_ptr atomic_load_acq_long			#define atomic_load_acq_ptr atomic_load_acq_long
	#define atomic_store_rel_ptr atomic_store_rel_long			#define atomic_store_rel_ptr atomic_store_rel_long
	#define atomic_readandclear_ptr atomic_readandclear_long			#define atomic_readandclear_ptr atomic_readandclear_long

				#define ATOMIC_SWAP(sem,suf,dtype,before,after) \
				static __inline dtype \
				atomic_swap##sem##suff(volatile dtype *ptr, const dtype value) \
				{ \
				kibUnsubmitted Not Done Inline Actions Style does not allow to initialize at declaration. kib: Style does not allow to initialize at declaration.
				dtype retval; \
				\
				if (before) \
				atomic_thread_fence_rel(); \
				retval = *ptr; \
				while (!atomic_fcmpset_##suffix(ptr, &retval, value)) \
				; \
				if (after) \
				atomic_thread_fence_acq(); \
				return (retval); \
				}

				ATOMIC_SWAP(,_int,u_int,0,0)
				ATOMIC_SWAP(_rel,_int,u_int,1,0)
				ATOMIC_SWAP(_ack,_int,u_int,0,1)

				ATOMIC_SWAP(,_32,uint32_t,0,0)
				ATOMIC_SWAP(_rel,_32,uint32_t,1,0)
				ATOMIC_SWAP(_ack,_32,uint32_t,0,1)

				#if defined(__mips_n64) \|\| defined(__mips_n32)
				ATOMIC_SWAP(,_64,uint64_t,0,0)
				ATOMIC_SWAP(_rel,_64,uint64_t,1,0)
				ATOMIC_SWAP(_ack,_64,uint64_t,0,1)
				#endif

				ATOMIC_SWAP(,_long,u_long,0,0)
				ATOMIC_SWAP(_rel,_long,u_long,1,0)
				ATOMIC_SWAP(_ack,_long,u_long,0,1)

				ATOMIC_SWAP(,_ptr,void *,0,0)
				ATOMIC_SWAP(_rel,_ptr,void *,1,0)
				ATOMIC_SWAP(_ack,_ptr,void *,0,1)
				kibUnsubmitted Not Done Inline Actions Do we provide ack/rel variants of swap on any other arch ? Also, if you use fcmpset_acq/rel, I do not see why do you need additional thread fences. kib: Do we provide ack/rel variants of swap on any other arch ? Also, if you use fcmpset_acq/rel, I…
				hselaskyAuthorUnsubmitted Done Inline Actions No, usually not. Do you want me to clear those variants? hselasky: No, usually not. Do you want me to clear those variants?
				kibUnsubmitted Not Done Inline Actions Yes, I think it is better not to do that, both due to the precedent and because the implementation is somewhat questionable. kib: Yes, I think it is better not to do that, both due to the precedent and because the…

	#endif /* ! _MACHINE_ATOMIC_H_ */			#endif /* ! _MACHINE_ATOMIC_H_ */