Merge r221614,221696,221737,221840 from largeSMP project branch:
Rewrite atomic operations for powerpc in order to achieve the following: - Produce a type-clean implementation (in terms of functions arguments and returned values) for the primitives. - Fix errors with _long() atomics where they ended up with the wrong arguments to be accepted. - Follow the sys/type.h specifics that define the numbered types starting from standard C types. - Let _ptr() version to not auto-magically cast arguments, but leave the burden on callers, as _ptr() atomic is intended to be used relatively rarely. Fix cfi in order to support the latest point. In collabouration with: bde Tested by: andreast, nwhitehorn, jceel MFC after: 2 weeks
This commit is contained in:
Attilio Rao
parent
dbed8d1fc8
commit
dc6dc1f573
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=222198
@ -145,7 +145,8 @@ cfi_devopen(struct cdev *dev, int oflags, int devtype, struct thread *td)
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sc = dev->si_drv1;
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/* We allow only 1 open. */
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if (!atomic_cmpset_acq_ptr(&sc->sc_opened, NULL, td->td_proc))
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if (!atomic_cmpset_acq_ptr((uintptr_t *)&sc->sc_opened,
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(uintptr_t)NULL, (uintptr_t)td->td_proc))
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return (EBUSY);
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return (0);
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}
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@ -48,13 +48,7 @@
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* { *p += v; }
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*/
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#define __ATOMIC_ADD_8(p, v, t) \
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8-bit atomic_add not implemented
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#define __ATOMIC_ADD_16(p, v, t) \
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16-bit atomic_add not implemented
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#define __ATOMIC_ADD_32(p, v, t) \
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#define __atomic_add_int(p, v, t) \
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__asm __volatile( \
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"1: lwarx %0, 0, %2\n" \
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" add %0, %3, %0\n" \
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@ -63,10 +57,10 @@
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __ATOMIC_ADD_32 */
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/* __atomic_add_int */
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#ifdef __powerpc64__
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#define __ATOMIC_ADD_64(p, v, t) \
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#define __atomic_add_long(p, v, t) \
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__asm __volatile( \
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"1: ldarx %0, 0, %2\n" \
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" add %0, %3, %0\n" \
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@ -75,69 +69,72 @@
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __ATOMIC_ADD_64 */
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/* __atomic_add_long */
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#else
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#define __ATOMIC_ADD_64(p, v, t) \
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64-bit atomic_add not implemented
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#define __atomic_add_long(p, v, t) \
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__asm __volatile( \
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"1: lwarx %0, 0, %2\n" \
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" add %0, %3, %0\n" \
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" stwcx. %0, 0, %2\n" \
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" bne- 1b\n" \
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __atomic_add_long */
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#endif
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#define _ATOMIC_ADD(width, suffix, type) \
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#define _ATOMIC_ADD(type) \
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static __inline void \
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atomic_add_##suffix(volatile type *p, type v) { \
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type t; \
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__ATOMIC_ADD_##width(p, v, t); \
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atomic_add_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__atomic_add_##type(p, v, t); \
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} \
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\
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static __inline void \
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atomic_add_acq_##suffix(volatile type *p, type v) { \
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type t; \
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__ATOMIC_ADD_##width(p, v, t); \
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atomic_add_acq_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__atomic_add_##type(p, v, t); \
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__ATOMIC_BARRIER; \
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} \
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\
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static __inline void \
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atomic_add_rel_##suffix(volatile type *p, type v) { \
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type t; \
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atomic_add_rel_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__ATOMIC_BARRIER; \
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__ATOMIC_ADD_##width(p, v, t); \
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__atomic_add_##type(p, v, t); \
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} \
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/* _ATOMIC_ADD */
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#if 0
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_ATOMIC_ADD(8, 8, uint8_t)
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_ATOMIC_ADD(8, char, u_char)
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_ATOMIC_ADD(16, 16, uint16_t)
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_ATOMIC_ADD(16, short, u_short)
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#endif
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_ATOMIC_ADD(32, 32, uint32_t)
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_ATOMIC_ADD(32, int, u_int)
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#ifdef __powerpc64__
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_ATOMIC_ADD(64, 64, uint64_t)
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_ATOMIC_ADD(64, long, u_long)
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_ATOMIC_ADD(64, ptr, uintptr_t)
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#else
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_ATOMIC_ADD(32, long, u_long)
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_ATOMIC_ADD(32, ptr, uintptr_t)
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#endif
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_ATOMIC_ADD(int)
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_ATOMIC_ADD(long)
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#define atomic_add_32 atomic_add_int
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#define atomic_add_acq_32 atomic_add_acq_int
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#define atomic_add_rel_32 atomic_add_rel_int
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#ifdef __powerpc64__
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#define atomic_add_64 atomic_add_long
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#define atomic_add_acq_64 atomic_add_acq_long
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#define atomic_add_rel_64 atomic_add_rel_long
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#define atomic_add_ptr atomic_add_long
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#define atomic_add_acq_ptr atomic_add_acq_long
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#define atomic_add_rel_ptr atomic_add_rel_long
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#else
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#define atomic_add_ptr atomic_add_int
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#define atomic_add_acq_ptr atomic_add_acq_int
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#define atomic_add_rel_ptr atomic_add_rel_int
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#endif
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#undef _ATOMIC_ADD
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#undef __ATOMIC_ADD_64
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#undef __ATOMIC_ADD_32
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#undef __ATOMIC_ADD_16
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#undef __ATOMIC_ADD_8
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#undef __atomic_add_long
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#undef __atomic_add_int
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/*
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* atomic_clear(p, v)
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* { *p &= ~v; }
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*/
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#define __ATOMIC_CLEAR_8(p, v, t) \
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8-bit atomic_clear not implemented
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#define __ATOMIC_CLEAR_16(p, v, t) \
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16-bit atomic_clear not implemented
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#define __ATOMIC_CLEAR_32(p, v, t) \
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#define __atomic_clear_int(p, v, t) \
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__asm __volatile( \
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"1: lwarx %0, 0, %2\n" \
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" andc %0, %0, %3\n" \
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@ -146,10 +143,10 @@ _ATOMIC_ADD(32, ptr, uintptr_t)
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __ATOMIC_CLEAR_32 */
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/* __atomic_clear_int */
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#ifdef __powerpc64__
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#define __ATOMIC_CLEAR_64(p, v, t) \
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#define __atomic_clear_long(p, v, t) \
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__asm __volatile( \
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"1: ldarx %0, 0, %2\n" \
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" andc %0, %0, %3\n" \
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@ -158,56 +155,66 @@ _ATOMIC_ADD(32, ptr, uintptr_t)
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __ATOMIC_CLEAR_64 */
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/* __atomic_clear_long */
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#else
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#define __ATOMIC_CLEAR_64(p, v, t) \
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64-bit atomic_clear not implemented
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#define __atomic_clear_long(p, v, t) \
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__asm __volatile( \
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"1: lwarx %0, 0, %2\n" \
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" andc %0, %0, %3\n" \
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" stwcx. %0, 0, %2\n" \
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" bne- 1b\n" \
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __atomic_clear_long */
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#endif
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#define _ATOMIC_CLEAR(width, suffix, type) \
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#define _ATOMIC_CLEAR(type) \
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static __inline void \
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atomic_clear_##suffix(volatile type *p, type v) { \
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type t; \
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__ATOMIC_CLEAR_##width(p, v, t); \
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atomic_clear_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__atomic_clear_##type(p, v, t); \
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} \
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\
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static __inline void \
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atomic_clear_acq_##suffix(volatile type *p, type v) { \
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type t; \
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__ATOMIC_CLEAR_##width(p, v, t); \
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atomic_clear_acq_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__atomic_clear_##type(p, v, t); \
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__ATOMIC_BARRIER; \
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} \
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\
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static __inline void \
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atomic_clear_rel_##suffix(volatile type *p, type v) { \
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type t; \
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atomic_clear_rel_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__ATOMIC_BARRIER; \
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__ATOMIC_CLEAR_##width(p, v, t); \
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__atomic_clear_##type(p, v, t); \
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} \
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/* _ATOMIC_CLEAR */
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#if 0
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_ATOMIC_CLEAR(8, 8, uint8_t)
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_ATOMIC_CLEAR(8, char, u_char)
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_ATOMIC_CLEAR(16, 16, uint16_t)
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_ATOMIC_CLEAR(16, short, u_short)
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#endif
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_ATOMIC_CLEAR(32, 32, uint32_t)
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_ATOMIC_CLEAR(32, int, u_int)
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#ifdef __powerpc64__
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_ATOMIC_CLEAR(64, 64, uint64_t)
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_ATOMIC_CLEAR(64, long, u_long)
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_ATOMIC_CLEAR(64, ptr, uintptr_t)
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#else
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_ATOMIC_CLEAR(32, long, u_long)
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_ATOMIC_CLEAR(32, ptr, uintptr_t)
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#endif
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_ATOMIC_CLEAR(int)
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_ATOMIC_CLEAR(long)
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#define atomic_clear_32 atomic_clear_int
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#define atomic_clear_acq_32 atomic_clear_acq_int
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#define atomic_clear_rel_32 atomic_clear_rel_int
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#ifdef __powerpc64__
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#define atomic_clear_64 atomic_clear_long
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#define atomic_clear_acq_64 atomic_clear_acq_long
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#define atomic_clear_rel_64 atomic_clear_rel_long
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#define atomic_clear_ptr atomic_clear_long
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#define atomic_clear_acq_ptr atomic_clear_acq_long
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#define atomic_clear_rel_ptr atomic_clear_rel_long
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#else
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#define atomic_clear_ptr atomic_clear_int
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#define atomic_clear_acq_ptr atomic_clear_acq_int
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#define atomic_clear_rel_ptr atomic_clear_rel_int
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#endif
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#undef _ATOMIC_CLEAR
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#undef __ATOMIC_CLEAR_64
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#undef __ATOMIC_CLEAR_32
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#undef __ATOMIC_CLEAR_16
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#undef __ATOMIC_CLEAR_8
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#undef __atomic_clear_long
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#undef __atomic_clear_int
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/*
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* atomic_cmpset(p, o, n)
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@ -229,13 +236,7 @@ _ATOMIC_CLEAR(32, ptr, uintptr_t)
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* { *p |= v; }
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*/
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#define __ATOMIC_SET_8(p, v, t) \
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8-bit atomic_set not implemented
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#define __ATOMIC_SET_16(p, v, t) \
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16-bit atomic_set not implemented
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#define __ATOMIC_SET_32(p, v, t) \
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#define __atomic_set_int(p, v, t) \
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__asm __volatile( \
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"1: lwarx %0, 0, %2\n" \
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" or %0, %3, %0\n" \
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@ -244,10 +245,10 @@ _ATOMIC_CLEAR(32, ptr, uintptr_t)
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __ATOMIC_SET_32 */
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/* __atomic_set_int */
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#ifdef __powerpc64__
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#define __ATOMIC_SET_64(p, v, t) \
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#define __atomic_set_long(p, v, t) \
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__asm __volatile( \
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"1: ldarx %0, 0, %2\n" \
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" or %0, %3, %0\n" \
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@ -256,69 +257,72 @@ _ATOMIC_CLEAR(32, ptr, uintptr_t)
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __ATOMIC_SET_64 */
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/* __atomic_set_long */
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#else
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#define __ATOMIC_SET_64(p, v, t) \
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64-bit atomic_set not implemented
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#define __atomic_set_long(p, v, t) \
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__asm __volatile( \
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"1: lwarx %0, 0, %2\n" \
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" or %0, %3, %0\n" \
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" stwcx. %0, 0, %2\n" \
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" bne- 1b\n" \
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: "=&r" (t), "=m" (*p) \
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: "r" (p), "r" (v), "m" (*p) \
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: "cc", "memory") \
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/* __atomic_set_long */
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#endif
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#define _ATOMIC_SET(width, suffix, type) \
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#define _ATOMIC_SET(type) \
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static __inline void \
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atomic_set_##suffix(volatile type *p, type v) { \
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type t; \
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__ATOMIC_SET_##width(p, v, t); \
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atomic_set_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__atomic_set_##type(p, v, t); \
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} \
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\
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static __inline void \
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atomic_set_acq_##suffix(volatile type *p, type v) { \
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type t; \
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__ATOMIC_SET_##width(p, v, t); \
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atomic_set_acq_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__atomic_set_##type(p, v, t); \
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__ATOMIC_BARRIER; \
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} \
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\
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static __inline void \
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atomic_set_rel_##suffix(volatile type *p, type v) { \
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type t; \
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atomic_set_rel_##type(volatile u_##type *p, u_##type v) { \
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u_##type t; \
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__ATOMIC_BARRIER; \
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__ATOMIC_SET_##width(p, v, t); \
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__atomic_set_##type(p, v, t); \
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} \
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/* _ATOMIC_SET */
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#if 0
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_ATOMIC_SET(8, 8, uint8_t)
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_ATOMIC_SET(8, char, u_char)
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_ATOMIC_SET(16, 16, uint16_t)
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_ATOMIC_SET(16, short, u_short)
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#endif
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_ATOMIC_SET(32, 32, uint32_t)
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_ATOMIC_SET(32, int, u_int)
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#ifdef __powerpc64__
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_ATOMIC_SET(64, 64, uint64_t)
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_ATOMIC_SET(64, long, u_long)
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_ATOMIC_SET(64, ptr, uintptr_t)
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#else
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_ATOMIC_SET(32, long, u_long)
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_ATOMIC_SET(32, ptr, uintptr_t)
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#endif
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_ATOMIC_SET(int)
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_ATOMIC_SET(long)
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#define atomic_set_32 atomic_set_int
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#define atomic_set_acq_32 atomic_set_acq_int
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#define atomic_set_rel_32 atomic_set_rel_int
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#ifdef __powerpc64__
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#define atomic_set_64 atomic_set_long
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#define atomic_set_acq_64 atomic_set_acq_long
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#define atomic_set_rel_64 atomic_set_rel_long
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#define atomic_set_ptr atomic_set_long
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#define atomic_set_acq_ptr atomic_set_acq_long
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#define atomic_set_rel_ptr atomic_set_rel_long
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#else
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#define atomic_set_ptr atomic_set_int
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#define atomic_set_acq_ptr atomic_set_acq_int
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#define atomic_set_rel_ptr atomic_set_rel_int
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#endif
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#undef _ATOMIC_SET
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#undef __ATOMIC_SET_64
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#undef __ATOMIC_SET_32
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#undef __ATOMIC_SET_16
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#undef __ATOMIC_SET_8
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#undef __atomic_set_long
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#undef __atomic_set_int
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/*
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* atomic_subtract(p, v)
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* { *p -= v; }
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*/
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#define __ATOMIC_SUBTRACT_8(p, v, t) \
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8-bit atomic_subtract not implemented
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#define __ATOMIC_SUBTRACT_16(p, v, t) \
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16-bit atomic_subtract not implemented
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#define __ATOMIC_SUBTRACT_32(p, v, t) \
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#define __atomic_subtract_int(p, v, t) \
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__asm __volatile( \
|
||||
"1: lwarx %0, 0, %2\n" \
|
||||
" subf %0, %3, %0\n" \
|
||||
@ -327,10 +331,10 @@ _ATOMIC_SET(32, ptr, uintptr_t)
|
||||
: "=&r" (t), "=m" (*p) \
|
||||
: "r" (p), "r" (v), "m" (*p) \
|
||||
: "cc", "memory") \
|
||||
/* __ATOMIC_SUBTRACT_32 */
|
||||
/* __atomic_subtract_int */
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define __ATOMIC_SUBTRACT_64(p, v, t) \
|
||||
#define __atomic_subtract_long(p, v, t) \
|
||||
__asm __volatile( \
|
||||
"1: ldarx %0, 0, %2\n" \
|
||||
" subf %0, %3, %0\n" \
|
||||
@ -339,56 +343,65 @@ _ATOMIC_SET(32, ptr, uintptr_t)
|
||||
: "=&r" (t), "=m" (*p) \
|
||||
: "r" (p), "r" (v), "m" (*p) \
|
||||
: "cc", "memory") \
|
||||
/* __ATOMIC_SUBTRACT_64 */
|
||||
/* __atomic_subtract_long */
|
||||
#else
|
||||
#define __ATOMIC_SUBTRACT_64(p, v, t) \
|
||||
64-bit atomic_subtract not implemented
|
||||
#define __atomic_subtract_long(p, v, t) \
|
||||
__asm __volatile( \
|
||||
"1: lwarx %0, 0, %2\n" \
|
||||
" subf %0, %3, %0\n" \
|
||||
" stwcx. %0, 0, %2\n" \
|
||||
" bne- 1b\n" \
|
||||
: "=&r" (t), "=m" (*p) \
|
||||
: "r" (p), "r" (v), "m" (*p) \
|
||||
: "cc", "memory") \
|
||||
/* __atomic_subtract_long */
|
||||
#endif
|
||||
|
||||
#define _ATOMIC_SUBTRACT(width, suffix, type) \
|
||||
static __inline void \
|
||||
atomic_subtract_##suffix(volatile type *p, type v) { \
|
||||
type t; \
|
||||
__ATOMIC_SUBTRACT_##width(p, v, t); \
|
||||
} \
|
||||
\
|
||||
static __inline void \
|
||||
atomic_subtract_acq_##suffix(volatile type *p, type v) { \
|
||||
type t; \
|
||||
__ATOMIC_SUBTRACT_##width(p, v, t); \
|
||||
__ATOMIC_BARRIER; \
|
||||
} \
|
||||
\
|
||||
static __inline void \
|
||||
atomic_subtract_rel_##suffix(volatile type *p, type v) { \
|
||||
type t; \
|
||||
__ATOMIC_BARRIER; \
|
||||
__ATOMIC_SUBTRACT_##width(p, v, t); \
|
||||
} \
|
||||
#define _ATOMIC_SUBTRACT(type) \
|
||||
static __inline void \
|
||||
atomic_subtract_##type(volatile u_##type *p, u_##type v) { \
|
||||
u_##type t; \
|
||||
__atomic_subtract_##type(p, v, t); \
|
||||
} \
|
||||
\
|
||||
static __inline void \
|
||||
atomic_subtract_acq_##type(volatile u_##type *p, u_##type v) { \
|
||||
u_##type t; \
|
||||
__atomic_subtract_##type(p, v, t); \
|
||||
__ATOMIC_BARRIER; \
|
||||
} \
|
||||
\
|
||||
static __inline void \
|
||||
atomic_subtract_rel_##type(volatile u_##type *p, u_##type v) { \
|
||||
u_##type t; \
|
||||
__ATOMIC_BARRIER; \
|
||||
__atomic_subtract_##type(p, v, t); \
|
||||
} \
|
||||
/* _ATOMIC_SUBTRACT */
|
||||
|
||||
#if 0
|
||||
_ATOMIC_SUBTRACT(8, 8, uint8_t)
|
||||
_ATOMIC_SUBTRACT(8, char, u_char)
|
||||
_ATOMIC_SUBTRACT(16, 16, uint16_t)
|
||||
_ATOMIC_SUBTRACT(16, short, u_short)
|
||||
#endif
|
||||
_ATOMIC_SUBTRACT(32, 32, uint32_t)
|
||||
_ATOMIC_SUBTRACT(32, int, u_int)
|
||||
#ifdef __powerpc64__
|
||||
_ATOMIC_SUBTRACT(64, 64, uint64_t)
|
||||
_ATOMIC_SUBTRACT(64, long, u_long)
|
||||
_ATOMIC_SUBTRACT(64, ptr, uintptr_t)
|
||||
#else
|
||||
_ATOMIC_SUBTRACT(32, long, u_long)
|
||||
_ATOMIC_SUBTRACT(32, ptr, uintptr_t)
|
||||
#endif
|
||||
_ATOMIC_SUBTRACT(int)
|
||||
_ATOMIC_SUBTRACT(long)
|
||||
|
||||
#define atomic_subtract_32 atomic_subtract_int
|
||||
#define atomic_subtract_acq_32 atomic_subtract_acq_int
|
||||
#define atomic_subtract_rel_32 atomic_subtract_rel_int
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define atomic_subtract_64 atomic_subtract_long
|
||||
#define atomic_subtract_acq_64 atomic_subract_acq_long
|
||||
#define atomic_subtract_rel_64 atomic_subtract_rel_long
|
||||
|
||||
#define atomic_subtract_ptr atomic_subtract_long
|
||||
#define atomic_subtract_acq_ptr atomic_subtract_acq_long
|
||||
#define atomic_subtract_rel_ptr atomic_subtract_rel_long
|
||||
#else
|
||||
#define atomic_subtract_ptr atomic_subtract_int
|
||||
#define atomic_subtract_acq_ptr atomic_subtract_acq_int
|
||||
#define atomic_subtract_rel_ptr atomic_subtract_rel_int
|
||||
#endif
|
||||
#undef _ATOMIC_SUBTRACT
|
||||
#undef __ATOMIC_SUBTRACT_64
|
||||
#undef __ATOMIC_SUBTRACT_32
|
||||
#undef __ATOMIC_SUBTRACT_16
|
||||
#undef __ATOMIC_SUBTRACT_8
|
||||
#undef __atomic_subtract_long
|
||||
#undef __atomic_subtract_int
|
||||
|
||||
/*
|
||||
* atomic_store_rel(p, v)
|
||||
@ -399,10 +412,10 @@ _ATOMIC_SUBTRACT(32, ptr, uintptr_t)
|
||||
* Old/original implementations that still need revisiting.
|
||||
*/
|
||||
|
||||
static __inline uint32_t
|
||||
atomic_readandclear_32(volatile uint32_t *addr)
|
||||
static __inline u_int
|
||||
atomic_readandclear_int(volatile u_int *addr)
|
||||
{
|
||||
uint32_t result,temp;
|
||||
u_int result,temp;
|
||||
|
||||
#ifdef __GNUCLIKE_ASM
|
||||
__asm __volatile (
|
||||
@ -420,10 +433,10 @@ atomic_readandclear_32(volatile uint32_t *addr)
|
||||
}
|
||||
|
||||
#ifdef __powerpc64__
|
||||
static __inline uint64_t
|
||||
atomic_readandclear_64(volatile uint64_t *addr)
|
||||
static __inline u_long
|
||||
atomic_readandclear_long(volatile u_long *addr)
|
||||
{
|
||||
uint64_t result,temp;
|
||||
u_long result,temp;
|
||||
|
||||
#ifdef __GNUCLIKE_ASM
|
||||
__asm __volatile (
|
||||
@ -441,37 +454,27 @@ atomic_readandclear_64(volatile uint64_t *addr)
|
||||
}
|
||||
#endif
|
||||
|
||||
#define atomic_readandclear_int atomic_readandclear_32
|
||||
#define atomic_readandclear_32 atomic_readandclear_int
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define atomic_readandclear_long atomic_readandclear_64
|
||||
#define atomic_readandclear_ptr atomic_readandclear_64
|
||||
#define atomic_readandclear_64 atomic_readandclear_long
|
||||
|
||||
#define atomic_readandclear_ptr atomic_readandclear_long
|
||||
#else
|
||||
#define atomic_readandclear_long atomic_readandclear_32
|
||||
#define atomic_readandclear_ptr atomic_readandclear_32
|
||||
static __inline u_long
|
||||
atomic_readandclear_long(volatile u_long *addr)
|
||||
{
|
||||
|
||||
return ((u_long)atomic_readandclear_int((volatile u_int *)addr));
|
||||
}
|
||||
|
||||
#define atomic_readandclear_ptr atomic_readandclear_int
|
||||
#endif
|
||||
|
||||
/*
|
||||
* We assume that a = b will do atomic loads and stores.
|
||||
*/
|
||||
#define ATOMIC_STORE_LOAD(TYPE, WIDTH) \
|
||||
static __inline u_##TYPE \
|
||||
atomic_load_acq_##WIDTH(volatile u_##TYPE *p) \
|
||||
{ \
|
||||
u_##TYPE v; \
|
||||
\
|
||||
v = *p; \
|
||||
__ATOMIC_BARRIER; \
|
||||
return (v); \
|
||||
} \
|
||||
\
|
||||
static __inline void \
|
||||
atomic_store_rel_##WIDTH(volatile u_##TYPE *p, u_##TYPE v) \
|
||||
{ \
|
||||
__ATOMIC_BARRIER; \
|
||||
*p = v; \
|
||||
} \
|
||||
\
|
||||
#define ATOMIC_STORE_LOAD(TYPE) \
|
||||
static __inline u_##TYPE \
|
||||
atomic_load_acq_##TYPE(volatile u_##TYPE *p) \
|
||||
{ \
|
||||
@ -489,25 +492,37 @@ atomic_store_rel_##TYPE(volatile u_##TYPE *p, u_##TYPE v) \
|
||||
*p = v; \
|
||||
}
|
||||
|
||||
ATOMIC_STORE_LOAD(char, 8)
|
||||
ATOMIC_STORE_LOAD(short, 16)
|
||||
ATOMIC_STORE_LOAD(int, 32)
|
||||
#ifdef __powerpc64__
|
||||
ATOMIC_STORE_LOAD(long, 64)
|
||||
#endif
|
||||
ATOMIC_STORE_LOAD(int)
|
||||
|
||||
#define atomic_load_acq_32 atomic_load_acq_int
|
||||
#define atomic_store_rel_32 atomic_store_rel_int
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define atomic_load_acq_long atomic_load_acq_64
|
||||
#define atomic_store_rel_long atomic_store_rel_64
|
||||
#define atomic_load_acq_ptr atomic_load_acq_64
|
||||
#define atomic_store_rel_ptr atomic_store_rel_64
|
||||
ATOMIC_STORE_LOAD(long)
|
||||
|
||||
#define atomic_load_acq_64 atomic_load_acq_long
|
||||
#define atomic_store_rel_64 atomic_store_rel_long
|
||||
|
||||
#define atomic_load_acq_ptr atomic_load_acq_long
|
||||
#define atomic_store_rel_ptr atomic_store_rel_long
|
||||
#else
|
||||
#define atomic_load_acq_long atomic_load_acq_32
|
||||
#define atomic_store_rel_long atomic_store_rel_32
|
||||
#define atomic_load_acq_ptr atomic_load_acq_32
|
||||
#define atomic_store_rel_ptr atomic_store_rel_32
|
||||
#endif
|
||||
static __inline u_long
|
||||
atomic_load_acq_long(volatile u_long *addr)
|
||||
{
|
||||
|
||||
return ((u_long)atomic_load_acq_int((volatile u_int *)addr));
|
||||
}
|
||||
|
||||
static __inline void
|
||||
atomic_store_rel_long(volatile u_long *addr, u_long val)
|
||||
{
|
||||
|
||||
atomic_store_rel_int((volatile u_int *)addr, (u_int)val);
|
||||
}
|
||||
|
||||
#define atomic_load_acq_ptr atomic_load_acq_int
|
||||
#define atomic_store_rel_ptr atomic_store_rel_int
|
||||
#endif
|
||||
#undef ATOMIC_STORE_LOAD
|
||||
|
||||
/*
|
||||
@ -516,7 +531,7 @@ ATOMIC_STORE_LOAD(long, 64)
|
||||
* zero if the compare failed, nonzero otherwise.
|
||||
*/
|
||||
static __inline int
|
||||
atomic_cmpset_32(volatile uint32_t* p, uint32_t cmpval, uint32_t newval)
|
||||
atomic_cmpset_int(volatile u_int* p, u_int cmpval, u_int newval)
|
||||
{
|
||||
int ret;
|
||||
|
||||
@ -540,7 +555,6 @@ atomic_cmpset_32(volatile uint32_t* p, uint32_t cmpval, uint32_t newval)
|
||||
|
||||
return (ret);
|
||||
}
|
||||
|
||||
static __inline int
|
||||
atomic_cmpset_long(volatile u_long* p, u_long cmpval, u_long newval)
|
||||
{
|
||||
@ -552,21 +566,21 @@ atomic_cmpset_long(volatile u_long* p, u_long cmpval, u_long newval)
|
||||
"1:\tldarx %0, 0, %2\n\t" /* load old value */
|
||||
"cmpld %3, %0\n\t" /* compare */
|
||||
"bne 2f\n\t" /* exit if not equal */
|
||||
"stdcx. %4, 0, %2\n\t" /* attempt to store */
|
||||
"stdcx. %4, 0, %2\n\t" /* attempt to store */
|
||||
#else
|
||||
"1:\tlwarx %0, 0, %2\n\t" /* load old value */
|
||||
"cmplw %3, %0\n\t" /* compare */
|
||||
"bne 2f\n\t" /* exit if not equal */
|
||||
"stwcx. %4, 0, %2\n\t" /* attempt to store */
|
||||
"stwcx. %4, 0, %2\n\t" /* attempt to store */
|
||||
#endif
|
||||
"bne- 1b\n\t" /* spin if failed */
|
||||
"li %0, 1\n\t" /* success - retval = 1 */
|
||||
"b 3f\n\t" /* we've succeeded */
|
||||
"2:\n\t"
|
||||
#ifdef __powerpc64__
|
||||
"stdcx. %0, 0, %2\n\t" /* clear reservation (74xx) */
|
||||
"stdcx. %0, 0, %2\n\t" /* clear reservation (74xx) */
|
||||
#else
|
||||
"stwcx. %0, 0, %2\n\t" /* clear reservation (74xx) */
|
||||
"stwcx. %0, 0, %2\n\t" /* clear reservation (74xx) */
|
||||
#endif
|
||||
"li %0, 0\n\t" /* failure - retval = 0 */
|
||||
"3:\n\t"
|
||||
@ -578,31 +592,21 @@ atomic_cmpset_long(volatile u_long* p, u_long cmpval, u_long newval)
|
||||
return (ret);
|
||||
}
|
||||
|
||||
#define atomic_cmpset_int atomic_cmpset_32
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define atomic_cmpset_ptr(dst, old, new) \
|
||||
atomic_cmpset_long((volatile u_long *)(dst), (u_long)(old), (u_long)(new))
|
||||
#else
|
||||
#define atomic_cmpset_ptr(dst, old, new) \
|
||||
atomic_cmpset_32((volatile u_int *)(dst), (u_int)(old), (u_int)(new))
|
||||
#endif
|
||||
|
||||
static __inline int
|
||||
atomic_cmpset_acq_32(volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
|
||||
atomic_cmpset_acq_int(volatile u_int *p, u_int cmpval, u_int newval)
|
||||
{
|
||||
int retval;
|
||||
|
||||
retval = atomic_cmpset_32(p, cmpval, newval);
|
||||
retval = atomic_cmpset_int(p, cmpval, newval);
|
||||
__ATOMIC_BARRIER;
|
||||
return (retval);
|
||||
}
|
||||
|
||||
static __inline int
|
||||
atomic_cmpset_rel_32(volatile uint32_t *p, uint32_t cmpval, uint32_t newval)
|
||||
atomic_cmpset_rel_int(volatile u_int *p, u_int cmpval, u_int newval)
|
||||
{
|
||||
__ATOMIC_BARRIER;
|
||||
return (atomic_cmpset_32(p, cmpval, newval));
|
||||
return (atomic_cmpset_int(p, cmpval, newval));
|
||||
}
|
||||
|
||||
static __inline int
|
||||
@ -622,39 +626,39 @@ atomic_cmpset_rel_long(volatile u_long *p, u_long cmpval, u_long newval)
|
||||
return (atomic_cmpset_long(p, cmpval, newval));
|
||||
}
|
||||
|
||||
#define atomic_cmpset_acq_int atomic_cmpset_acq_32
|
||||
#define atomic_cmpset_rel_int atomic_cmpset_rel_32
|
||||
#define atomic_cmpset_32 atomic_cmpset_int
|
||||
#define atomic_cmpset_acq_32 atomic_cmpset_acq_int
|
||||
#define atomic_cmpset_rel_32 atomic_cmpset_rel_int
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define atomic_cmpset_acq_ptr(dst, old, new) \
|
||||
atomic_cmpset_acq_long((volatile u_long *)(dst), (u_long)(old), (u_long)(new))
|
||||
#define atomic_cmpset_rel_ptr(dst, old, new) \
|
||||
atomic_cmpset_rel_long((volatile u_long *)(dst), (u_long)(old), (u_long)(new))
|
||||
#define atomic_cmpset_64 atomic_cmpset_long
|
||||
#define atomic_cmpset_acq_64 atomic_cmpset_acq_long
|
||||
#define atomic_cmpset_rel_64 atomic_cmpset_rel_long
|
||||
|
||||
#define atomic_cmpset_ptr atomic_cmpset_long
|
||||
#define atomic_cmpset_acq_ptr atomic_cmpset_acq_long
|
||||
#define atomic_cmpset_rel_ptr atomic_cmpset_rel_long
|
||||
#else
|
||||
#define atomic_cmpset_acq_ptr(dst, old, new) \
|
||||
atomic_cmpset_acq_32((volatile u_int *)(dst), (u_int)(old), (u_int)(new))
|
||||
#define atomic_cmpset_rel_ptr(dst, old, new) \
|
||||
atomic_cmpset_rel_32((volatile u_int *)(dst), (u_int)(old), (u_int)(new))
|
||||
#define atomic_cmpset_ptr atomic_cmpset_int
|
||||
#define atomic_cmpset_acq_ptr atomic_cmpset_acq_int
|
||||
#define atomic_cmpset_rel_ptr atomic_cmpset_rel_int
|
||||
#endif
|
||||
|
||||
static __inline uint32_t
|
||||
atomic_fetchadd_32(volatile uint32_t *p, uint32_t v)
|
||||
static __inline u_int
|
||||
atomic_fetchadd_int(volatile u_int *p, u_int v)
|
||||
{
|
||||
uint32_t value;
|
||||
u_int value;
|
||||
|
||||
do {
|
||||
value = *p;
|
||||
} while (!atomic_cmpset_32(p, value, value + v));
|
||||
} while (!atomic_cmpset_int(p, value, value + v));
|
||||
return (value);
|
||||
}
|
||||
|
||||
#define atomic_fetchadd_int atomic_fetchadd_32
|
||||
|
||||
#ifdef __powerpc64__
|
||||
static __inline uint64_t
|
||||
atomic_fetchadd_64(volatile uint64_t *p, uint64_t v)
|
||||
static __inline u_long
|
||||
atomic_fetchadd_long(volatile u_long *p, u_long v)
|
||||
{
|
||||
uint64_t value;
|
||||
u_long value;
|
||||
|
||||
do {
|
||||
value = *p;
|
||||
@ -662,10 +666,10 @@ atomic_fetchadd_64(volatile uint64_t *p, uint64_t v)
|
||||
return (value);
|
||||
}
|
||||
|
||||
#define atomic_fetchadd_long atomic_fetchadd_64
|
||||
#else
|
||||
#define atomic_fetchadd_long(p, v) \
|
||||
(u_long)atomic_fetchadd_32((volatile u_int *)(p), (u_int)(v))
|
||||
#define atomic_fetchadd_32 atomic_fetchadd_int
|
||||
|
||||
#ifdef __powerpc64__
|
||||
#define atomic_fetchadd_64 atomic_fetchadd_long
|
||||
#endif
|
||||
|
||||
#endif /* ! _MACHINE_ATOMIC_H_ */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user