Date: Mon, 10 Dec 2018 13:38:14 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341787 - in head/sys: arm/include mips/include powerpc/include Message-ID: <201812101338.wBADcE5A026483@repo.freebsd.org>
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Author: hselasky Date: Mon Dec 10 13:38:13 2018 New Revision: 341787 URL: https://svnweb.freebsd.org/changeset/base/341787 Log: Implement atomic_swap_xxx() for all platforms. Differential Revision: https://reviews.freebsd.org/D18450 Reviewed by: kib@ MFC after: 3 days Sponsored by: Mellanox Technologies Modified: head/sys/arm/include/atomic.h head/sys/mips/include/atomic.h head/sys/powerpc/include/atomic.h Modified: head/sys/arm/include/atomic.h ============================================================================== --- head/sys/arm/include/atomic.h Mon Dec 10 09:45:57 2018 (r341786) +++ head/sys/arm/include/atomic.h Mon Dec 10 13:38:13 2018 (r341787) @@ -55,6 +55,13 @@ #include <machine/atomic-v4.h> #endif /* Arch >= v6 */ +static __inline u_long +atomic_swap_long(volatile u_long *p, u_long v) +{ + + return (atomic_swap_32((volatile uint32_t *)p, v)); +} + #define atomic_clear_ptr atomic_clear_32 #define atomic_clear_acq_ptr atomic_clear_acq_32 #define atomic_clear_rel_ptr atomic_clear_rel_32 Modified: head/sys/mips/include/atomic.h ============================================================================== --- head/sys/mips/include/atomic.h Mon Dec 10 09:45:57 2018 (r341786) +++ head/sys/mips/include/atomic.h Mon Dec 10 13:38:13 2018 (r341787) @@ -755,4 +755,68 @@ atomic_thread_fence_seq_cst(void) #define atomic_store_rel_ptr atomic_store_rel_long #define atomic_readandclear_ptr atomic_readandclear_long +static __inline unsigned int +atomic_swap_int(volatile unsigned int *ptr, const unsigned int value) +{ + unsigned int retval; + + retval = *ptr; + + while (!atomic_fcmpset_int(ptr, &retval, value)) + ; + return (retval); +} + +static __inline uint32_t +atomic_swap_32(volatile uint32_t *ptr, const uint32_t value) +{ + uint32_t retval; + + retval = *ptr; + + while (!atomic_fcmpset_32(ptr, &retval, value)) + ; + return (retval); +} + +#if defined(__mips_n64) || defined(__mips_n32) +static __inline uint64_t +atomic_swap_64(volatile uint64_t *ptr, const uint64_t value) +{ + uint64_t retval; + + retval = *ptr; + + while (!atomic_fcmpset_64(ptr, &retval, value)) + ; + return (retval); +} +#endif + +static __inline unsigned long +atomic_swap_long(volatile unsigned long *ptr, const unsigned long value) +{ + unsigned long retval; + + retval = *ptr; + + while (!atomic_fcmpset_32((volatile uint32_t *)ptr, + (uint32_t *)&retval, value)) + ; + return (retval); +} + +static __inline uintptr_t +atomic_swap_ptr(volatile uintptr_t *ptr, const uintptr_t value) +{ + uintptr_t retval; + + retval = *ptr; + + while (!atomic_fcmpset_32((volatile uint32_t *)ptr, + (uint32_t *)&retval, value)) + ; + return (retval); +} + #endif /* ! _MACHINE_ATOMIC_H_ */ Modified: head/sys/powerpc/include/atomic.h ============================================================================== --- head/sys/powerpc/include/atomic.h Mon Dec 10 09:45:57 2018 (r341786) +++ head/sys/powerpc/include/atomic.h Mon Dec 10 13:38:13 2018 (r341787) @@ -852,6 +852,9 @@ atomic_swap_64(volatile u_long *p, u_long v) #define atomic_fetchadd_64 atomic_fetchadd_long #define atomic_swap_long atomic_swap_64 #define atomic_swap_ptr atomic_swap_64 +#else +#define atomic_swap_long(p,v) atomic_swap_32((volatile u_int *)(p), v) +#define atomic_swap_ptr(p,v) atomic_swap_32((volatile u_int *)(p), v) #endif #undef __ATOMIC_REL
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