27 static __inline__ int arch_atomic_read(const atomic_t *v)  in arch_atomic_read()  argument
33 		__asm__ __volatile__("lwz %0,0(%1)" : "=r"(t) : "b"(&v->counter));  in arch_atomic_read()
35 		__asm__ __volatile__("lwz%U1%X1 %0,%1" : "=r"(t) : "m<>"(v->counter));  in arch_atomic_read()
40 static __inline__ void arch_atomic_set(atomic_t *v, int i)  in arch_atomic_set()  argument
44 		__asm__ __volatile__("stw %1,0(%2)" : "=m"(v->counter) : "r"(i), "b"(&v->counter));  in arch_atomic_set()
46 		__asm__ __volatile__("stw%U0%X0 %1,%0" : "=m<>"(v->counter) : "r"(i));  in arch_atomic_set()
50 static __inline__ void arch_atomic_##op(int a, atomic_t *v)		\
55 "1:	lwarx	%0,0,%3		# atomic_" #op "\n"			\
58 "	bne-	1b\n"							\
59 	: "=&r" (t), "+m" (v->counter)					\
60 	: "r"#sign (a), "r" (&v->counter)				\
65 static inline int arch_atomic_##op##_return_relaxed(int a, atomic_t *v)	\
70 "1:	lwarx	%0,0,%3		# atomic_" #op "_return_relaxed\n"	\
73 "	bne-	1b\n"							\
74 	: "=&r" (t), "+m" (v->counter)					\
75 	: "r"#sign (a), "r" (&v->counter)				\
82 static inline int arch_atomic_fetch_##op##_relaxed(int a, atomic_t *v)	\
87 "1:	lwarx	%0,0,%4		# atomic_fetch_" #op "_relaxed\n"	\
88 	#asm_op "%I3" suffix " %1,%0,%3\n"				\
89 "	stwcx.	%1,0,%4\n"						\
90 "	bne-	1b\n"							\
91 	: "=&r" (res), "=&r" (t), "+m" (v->counter)			\
92 	: "r"#sign (a), "r" (&v->counter)				\
132  * @v: pointer of type atomic_t
133  * @a: the amount to add to v...
134  * @u: ...unless v is equal to u.
136  * Atomically adds @a to @v, so long as it was not @u.
137  * Returns the old value of @v.
139 static __inline__ int arch_atomic_fetch_add_unless(atomic_t *v, int a, int u)  in arch_atomic_fetch_add_unless()  argument
145 "1:	lwarx	%0,0,%1		# atomic_fetch_add_unless\n\  in arch_atomic_fetch_add_unless()
149 "	stwcx.	%0,0,%1 \n\  in arch_atomic_fetch_add_unless()
150 	bne-	1b \n"  in arch_atomic_fetch_add_unless()
155 	: "r" (&v->counter), "rI" (a), "r" (u)  in arch_atomic_fetch_add_unless()
163  * Atomically test *v and decrement if it is greater than 0.
164  * The function returns the old value of *v minus 1, even if
165  * the atomic variable, v, was not decremented.
167 static __inline__ int arch_atomic_dec_if_positive(atomic_t *v)  in arch_atomic_dec_if_positive()  argument
173 "1:	lwarx	%0,0,%1		# atomic_dec_if_positive\n\  in arch_atomic_dec_if_positive()
174 	cmpwi	%0,1\n\  in arch_atomic_dec_if_positive()
175 	addi	%0,%0,-1\n\  in arch_atomic_dec_if_positive()
177 "	stwcx.	%0,0,%1\n\  in arch_atomic_dec_if_positive()
178 	bne-	1b"  in arch_atomic_dec_if_positive()
182 	: "r" (&v->counter)  in arch_atomic_dec_if_positive()
193 static __inline__ s64 arch_atomic64_read(const atomic64_t *v)  in arch_atomic64_read()  argument
199 		__asm__ __volatile__("ld %0,0(%1)" : "=r"(t) : "b"(&v->counter));  in arch_atomic64_read()
201 		__asm__ __volatile__("ld%U1%X1 %0,%1" : "=r"(t) : DS_FORM_CONSTRAINT (v->counter));  in arch_atomic64_read()
206 static __inline__ void arch_atomic64_set(atomic64_t *v, s64 i)  in arch_atomic64_set()  argument
210 		__asm__ __volatile__("std %1,0(%2)" : "=m"(v->counter) : "r"(i), "b"(&v->counter));  in arch_atomic64_set()
212 		__asm__ __volatile__("std%U0%X0 %1,%0" : "=" DS_FORM_CONSTRAINT (v->counter) : "r"(i));  in arch_atomic64_set()
216 static __inline__ void arch_atomic64_##op(s64 a, atomic64_t *v)		\
221 "1:	ldarx	%0,0,%3		# atomic64_" #op "\n"			\
224 "	bne-	1b\n"							\
225 	: "=&r" (t), "+m" (v->counter)					\
226 	: "r" (a), "r" (&v->counter)					\
232 arch_atomic64_##op##_return_relaxed(s64 a, atomic64_t *v)		\
237 "1:	ldarx	%0,0,%3		# atomic64_" #op "_return_relaxed\n"	\
240 "	bne-	1b\n"							\
241 	: "=&r" (t), "+m" (v->counter)					\
242 	: "r" (a), "r" (&v->counter)					\
250 arch_atomic64_fetch_##op##_relaxed(s64 a, atomic64_t *v)		\
255 "1:	ldarx	%0,0,%4		# atomic64_fetch_" #op "_relaxed\n"	\
256 	#asm_op " %1,%3,%0\n"						\
257 "	stdcx.	%1,0,%4\n"						\
258 "	bne-	1b\n"							\
259 	: "=&r" (res), "=&r" (t), "+m" (v->counter)			\
260 	: "r" (a), "r" (&v->counter)					\
298 static __inline__ void arch_atomic64_inc(atomic64_t *v)  in ATOMIC64_OPS()
303 "1:	ldarx	%0,0,%2		# atomic64_inc\n\  in ATOMIC64_OPS()
304 	addic	%0,%0,1\n\  in ATOMIC64_OPS()
306 	bne-	1b"  in ATOMIC64_OPS()
307 	: "=&r" (t), "+m" (v->counter)  in ATOMIC64_OPS()
308 	: "r" (&v->counter)  in ATOMIC64_OPS()
313 static __inline__ s64 arch_atomic64_inc_return_relaxed(atomic64_t *v)  in arch_atomic64_inc_return_relaxed()  argument
318 "1:	ldarx	%0,0,%2		# atomic64_inc_return_relaxed\n"  in arch_atomic64_inc_return_relaxed()
319 "	addic	%0,%0,1\n"  in arch_atomic64_inc_return_relaxed()
321 "	bne-	1b"  in arch_atomic64_inc_return_relaxed()
322 	: "=&r" (t), "+m" (v->counter)  in arch_atomic64_inc_return_relaxed()
323 	: "r" (&v->counter)  in arch_atomic64_inc_return_relaxed()
329 static __inline__ void arch_atomic64_dec(atomic64_t *v)  in arch_atomic64_dec()  argument
334 "1:	ldarx	%0,0,%2		# atomic64_dec\n\  in arch_atomic64_dec()
335 	addic	%0,%0,-1\n\  in arch_atomic64_dec()
337 	bne-	1b"  in arch_atomic64_dec()
338 	: "=&r" (t), "+m" (v->counter)  in arch_atomic64_dec()
339 	: "r" (&v->counter)  in arch_atomic64_dec()
344 static __inline__ s64 arch_atomic64_dec_return_relaxed(atomic64_t *v)  in arch_atomic64_dec_return_relaxed()  argument
349 "1:	ldarx	%0,0,%2		# atomic64_dec_return_relaxed\n"  in arch_atomic64_dec_return_relaxed()
350 "	addic	%0,%0,-1\n"  in arch_atomic64_dec_return_relaxed()
352 "	bne-	1b"  in arch_atomic64_dec_return_relaxed()
353 	: "=&r" (t), "+m" (v->counter)  in arch_atomic64_dec_return_relaxed()
354 	: "r" (&v->counter)  in arch_atomic64_dec_return_relaxed()
364  * Atomically test *v and decrement if it is greater than 0.
365  * The function returns the old value of *v minus 1.
367 static __inline__ s64 arch_atomic64_dec_if_positive(atomic64_t *v)  in arch_atomic64_dec_if_positive()  argument
373 "1:	ldarx	%0,0,%1		# atomic64_dec_if_positive\n\  in arch_atomic64_dec_if_positive()
374 	addic.	%0,%0,-1\n\  in arch_atomic64_dec_if_positive()
376 	stdcx.	%0,0,%1\n\  in arch_atomic64_dec_if_positive()
377 	bne-	1b"  in arch_atomic64_dec_if_positive()
381 	: "r" (&v->counter)  in arch_atomic64_dec_if_positive()
390  * @v: pointer of type atomic64_t
391  * @a: the amount to add to v...
392  * @u: ...unless v is equal to u.
394  * Atomically adds @a to @v, so long as it was not @u.
395  * Returns the old value of @v.
397 static __inline__ s64 arch_atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)  in arch_atomic64_fetch_add_unless()  argument
403 "1:	ldarx	%0,0,%1		# atomic64_fetch_add_unless\n\  in arch_atomic64_fetch_add_unless()
407 "	stdcx.	%0,0,%1 \n\  in arch_atomic64_fetch_add_unless()
408 	bne-	1b \n"  in arch_atomic64_fetch_add_unless()
413 	: "r" (&v->counter), "r" (a), "r" (u)  in arch_atomic64_fetch_add_unless()
422  * @v: pointer of type atomic64_t
424  * Atomically increments @v by 1, so long as @v is non-zero.
425  * Returns non-zero if @v was non-zero, and zero otherwise.
427 static __inline__ int arch_atomic64_inc_not_zero(atomic64_t *v)  in arch_atomic64_inc_not_zero()  argument
433 "1:	ldarx	%0,0,%2		# atomic64_inc_not_zero\n\  in arch_atomic64_inc_not_zero()
436 	addic	%1,%0,1\n\  in arch_atomic64_inc_not_zero()
437 	stdcx.	%1,0,%2\n\  in arch_atomic64_inc_not_zero()
438 	bne-	1b\n"  in arch_atomic64_inc_not_zero()
443 	: "r" (&v->counter)  in arch_atomic64_inc_not_zero()
448 #define arch_atomic64_inc_not_zero(v) arch_atomic64_inc_not_zero((v))  argument