mips: use generic sub-word atomic *cmpset
Most of this diff is refactoring to reduce duplication between the different acq_ and rel_ variants. Differential Revision: https://reviews.freebsd.org/D21822
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b6c5d1ef76
commit
281ec62c97
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=353016
@ -81,6 +81,11 @@ void atomic_clear_16(__volatile uint16_t *, uint16_t);
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void atomic_add_16(__volatile uint16_t *, uint16_t);
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void atomic_subtract_16(__volatile uint16_t *, uint16_t);
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static __inline int atomic_cmpset_8(__volatile uint8_t *, uint8_t, uint8_t);
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static __inline int atomic_fcmpset_8(__volatile uint8_t *, uint8_t *, uint8_t);
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static __inline int atomic_cmpset_16(__volatile uint16_t *, uint16_t, uint16_t);
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static __inline int atomic_fcmpset_16(__volatile uint16_t *, uint16_t *, uint16_t);
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static __inline void
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atomic_set_32(__volatile uint32_t *p, uint32_t v)
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{
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@ -375,23 +380,6 @@ atomic_cmpset_32(__volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
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* two values are equal, update the value of *p with newval. Returns
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* zero if the compare failed, nonzero otherwise.
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*/
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static __inline int
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atomic_cmpset_acq_32(__volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
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{
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int retval;
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retval = atomic_cmpset_32(p, cmpval, newval);
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mips_sync();
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return (retval);
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}
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static __inline int
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atomic_cmpset_rel_32(__volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
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{
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mips_sync();
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return (atomic_cmpset_32(p, cmpval, newval));
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}
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static __inline int
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atomic_fcmpset_32(__volatile uint32_t *p, uint32_t *cmpval, uint32_t newval)
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{
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@ -422,23 +410,58 @@ atomic_fcmpset_32(__volatile uint32_t *p, uint32_t *cmpval, uint32_t newval)
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return ret;
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}
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static __inline int
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atomic_fcmpset_acq_32(__volatile uint32_t *p, uint32_t *cmpval, uint32_t newval)
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{
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int retval;
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retval = atomic_fcmpset_32(p, cmpval, newval);
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mips_sync();
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return (retval);
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#define ATOMIC_CMPSET_ACQ_REL(WIDTH) \
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static __inline int \
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atomic_cmpset_acq_##WIDTH(__volatile uint##WIDTH##_t *p, \
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uint##WIDTH##_t cmpval, uint##WIDTH##_t newval) \
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{ \
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int retval; \
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\
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retval = atomic_cmpset_##WIDTH(p, cmpval, newval); \
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mips_sync(); \
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return (retval); \
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} \
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\
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static __inline int \
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atomic_cmpset_rel_##WIDTH(__volatile uint##WIDTH##_t *p, \
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uint##WIDTH##_t cmpval, uint##WIDTH##_t newval) \
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{ \
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mips_sync(); \
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return (atomic_cmpset_##WIDTH(p, cmpval, newval)); \
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}
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static __inline int
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atomic_fcmpset_rel_32(__volatile uint32_t *p, uint32_t *cmpval, uint32_t newval)
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{
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mips_sync();
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return (atomic_fcmpset_32(p, cmpval, newval));
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#define ATOMIC_FCMPSET_ACQ_REL(WIDTH) \
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static __inline int \
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atomic_fcmpset_acq_##WIDTH(__volatile uint##WIDTH##_t *p, \
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uint##WIDTH##_t *cmpval, uint##WIDTH##_t newval) \
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{ \
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int retval; \
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\
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retval = atomic_fcmpset_##WIDTH(p, cmpval, newval); \
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mips_sync(); \
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return (retval); \
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} \
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\
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static __inline int \
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atomic_fcmpset_rel_##WIDTH(__volatile uint##WIDTH##_t *p, \
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uint##WIDTH##_t *cmpval, uint##WIDTH##_t newval) \
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{ \
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mips_sync(); \
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return (atomic_fcmpset_##WIDTH(p, cmpval, newval)); \
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}
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/*
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* Atomically compare the value stored at *p with cmpval and if the
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* two values are equal, update the value of *p with newval. Returns
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* zero if the compare failed, nonzero otherwise.
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*/
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ATOMIC_CMPSET_ACQ_REL(8);
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ATOMIC_CMPSET_ACQ_REL(16);
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ATOMIC_CMPSET_ACQ_REL(32);
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ATOMIC_FCMPSET_ACQ_REL(8);
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ATOMIC_FCMPSET_ACQ_REL(16);
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ATOMIC_FCMPSET_ACQ_REL(32);
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/*
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* Atomically add the value of v to the integer pointed to by p and return
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* the previous value of *p.
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@ -487,28 +510,6 @@ atomic_cmpset_64(__volatile uint64_t *p, uint64_t cmpval, uint64_t newval)
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return ret;
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}
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/*
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* Atomically compare the value stored at *p with cmpval and if the
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* two values are equal, update the value of *p with newval. Returns
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* zero if the compare failed, nonzero otherwise.
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*/
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static __inline int
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atomic_cmpset_acq_64(__volatile uint64_t *p, uint64_t cmpval, uint64_t newval)
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{
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int retval;
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retval = atomic_cmpset_64(p, cmpval, newval);
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mips_sync();
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return (retval);
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}
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static __inline int
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atomic_cmpset_rel_64(__volatile uint64_t *p, uint64_t cmpval, uint64_t newval)
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{
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mips_sync();
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return (atomic_cmpset_64(p, cmpval, newval));
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}
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static __inline int
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atomic_fcmpset_64(__volatile uint64_t *p, uint64_t *cmpval, uint64_t newval)
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{
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@ -532,22 +533,13 @@ atomic_fcmpset_64(__volatile uint64_t *p, uint64_t *cmpval, uint64_t newval)
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return ret;
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}
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static __inline int
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atomic_fcmpset_acq_64(__volatile uint64_t *p, uint64_t *cmpval, uint64_t newval)
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{
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int retval;
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retval = atomic_fcmpset_64(p, cmpval, newval);
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mips_sync();
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return (retval);
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}
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static __inline int
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atomic_fcmpset_rel_64(__volatile uint64_t *p, uint64_t *cmpval, uint64_t newval)
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{
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mips_sync();
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return (atomic_fcmpset_64(p, cmpval, newval));
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}
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/*
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* Atomically compare the value stored at *p with cmpval and if the
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* two values are equal, update the value of *p with newval. Returns
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* zero if the compare failed, nonzero otherwise.
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*/
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ATOMIC_CMPSET_ACQ_REL(64);
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ATOMIC_FCMPSET_ACQ_REL(64);
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/*
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* Atomically add the value of v to the integer pointed to by p and return
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@ -611,6 +603,12 @@ atomic_thread_fence_seq_cst(void)
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#define atomic_subtract_char atomic_subtract_8
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#define atomic_subtract_acq_char atomic_subtract_acq_8
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#define atomic_subtract_rel_char atomic_subtract_rel_8
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#define atomic_cmpset_char atomic_cmpset_8
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#define atomic_cmpset_acq_char atomic_cmpset_acq_8
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#define atomic_cmpset_rel_char atomic_cmpset_rel_8
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#define atomic_fcmpset_char atomic_fcmpset_8
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#define atomic_fcmpset_acq_char atomic_fcmpset_acq_8
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#define atomic_fcmpset_rel_char atomic_fcmpset_rel_8
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/* Operations on shorts. */
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#define atomic_set_short atomic_set_16
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@ -625,6 +623,12 @@ atomic_thread_fence_seq_cst(void)
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#define atomic_subtract_short atomic_subtract_16
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#define atomic_subtract_acq_short atomic_subtract_acq_16
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#define atomic_subtract_rel_short atomic_subtract_rel_16
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#define atomic_cmpset_short atomic_cmpset_16
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#define atomic_cmpset_acq_short atomic_cmpset_acq_16
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#define atomic_cmpset_rel_short atomic_cmpset_rel_16
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#define atomic_fcmpset_short atomic_fcmpset_16
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#define atomic_fcmpset_acq_short atomic_fcmpset_acq_16
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#define atomic_fcmpset_rel_short atomic_fcmpset_rel_16
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/* Operations on ints. */
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#define atomic_set_int atomic_set_32
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@ -828,4 +832,6 @@ atomic_swap_long(volatile unsigned long *ptr, const unsigned long value)
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#endif
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#define atomic_swap_ptr(ptr, value) atomic_swap_long((unsigned long *)(ptr), value)
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#include <sys/_atomic_subword.h>
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#endif /* ! _MACHINE_ATOMIC_H_ */
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