82  * store NEW in MEM.  Return the initial value in MEM.  Success is
85 #define __raw_cmpxchg(ptr, old, new, size, lock)			\  argument
89 	__typeof__(*(ptr)) __new = (new);				\
133 #define __cmpxchg(ptr, old, new, size)					\  argument
134 	__raw_cmpxchg((ptr), (old), (new), (size), LOCK_PREFIX)
136 #define __sync_cmpxchg(ptr, old, new, size)				\  argument
137 	__raw_cmpxchg((ptr), (old), (new), (size), "lock; ")
139 #define __cmpxchg_local(ptr, old, new, size)				\  argument
140 	__raw_cmpxchg((ptr), (old), (new), (size), "")
148 #define arch_cmpxchg(ptr, old, new)					\  argument
149 	__cmpxchg(ptr, old, new, sizeof(*(ptr)))
151 #define arch_sync_cmpxchg(ptr, old, new)				\  argument
152 	__sync_cmpxchg(ptr, old, new, sizeof(*(ptr)))
154 #define arch_cmpxchg_local(ptr, old, new)				\  argument
155 	__cmpxchg_local(ptr, old, new, sizeof(*(ptr)))
168 		asm volatile(lock "cmpxchgb %[new], %[ptr]"		\
173 			     : [new] "q" (__new)			\
180 		asm volatile(lock "cmpxchgw %[new], %[ptr]"		\
185 			     : [new] "r" (__new)			\
192 		asm volatile(lock "cmpxchgl %[new], %[ptr]"		\
197 			     : [new] "r" (__new)			\
204 		asm volatile(lock "cmpxchgq %[new], %[ptr]"		\
209 			     : [new] "r" (__new)			\
221 #define __try_cmpxchg(ptr, pold, new, size)				\  argument
222 	__raw_try_cmpxchg((ptr), (pold), (new), (size), LOCK_PREFIX)
224 #define try_cmpxchg(ptr, pold, new) 					\  argument
225 	__try_cmpxchg((ptr), (pold), (new), sizeof(*(ptr)))