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https://git.rtems.org/rtems-libbsd/
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Separate RTEMS Specific Files from Those Direct from FreeBSD
This commit is contained in:
Joel Sherrill
367
rtemsbsd/include/machine/atomic.h
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367
rtemsbsd/include/machine/atomic.h
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/**
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* @file
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*
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* @ingroup rtems_bsd_machine
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*
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* @brief TODO.
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*/
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/*
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* Copyright (c) 2009, 2010 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Obere Lagerstr. 30
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*/
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#ifndef _RTEMS_BSD_MACHINE_ATOMIC_H_
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#define _RTEMS_BSD_MACHINE_ATOMIC_H_
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#ifndef _RTEMS_BSD_MACHINE_RTEMS_BSD_CONFIG_H_
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#error "the header file <rtems/freebsd/machine/rtems-bsd-config.h> must be included first"
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#endif
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#define mb() RTEMS_COMPILER_MEMORY_BARRIER()
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#define wmb() RTEMS_COMPILER_MEMORY_BARRIER()
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#define rmb() RTEMS_COMPILER_MEMORY_BARRIER()
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static inline void
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atomic_add_int(volatile int *p, int v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p += v;
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rtems_interrupt_enable(level);
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}
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#define atomic_add_acq_int atomic_add_int
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#define atomic_add_rel_int atomic_add_int
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static inline void
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atomic_subtract_int(volatile int *p, int v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p -= v;
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rtems_interrupt_enable(level);
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}
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#define atomic_subtract_acq_int atomic_subtract_int
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#define atomic_subtract_rel_int atomic_subtract_int
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static inline void
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atomic_set_int(volatile int *p, int v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p |= v;
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rtems_interrupt_enable(level);
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}
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#define atomic_set_acq_int atomic_set_int
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#define atomic_set_rel_int atomic_set_int
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static inline void
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atomic_clear_int(volatile int *p, int v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p &= ~v;
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rtems_interrupt_enable(level);
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}
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#define atomic_clear_acq_int atomic_clear_int
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#define atomic_clear_rel_int atomic_clear_int
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static inline int
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atomic_cmpset_int(volatile int *p, int cmp, int set)
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{
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rtems_interrupt_level level;
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int rv;
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rtems_interrupt_disable(level);
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rv = *p == cmp;
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if (rv) {
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*p = set;
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}
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rtems_interrupt_enable(level);
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return rv;
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}
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#define atomic_cmpset_acq_int atomic_cmpset_int
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#define atomic_cmpset_rel_int atomic_cmpset_int
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static inline int
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atomic_fetchadd_int(volatile int *p, int v)
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{
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rtems_interrupt_level level;
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int tmp;
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rtems_interrupt_disable(level);
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tmp = *p;
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*p += v;
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rtems_interrupt_enable(level);
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return tmp;
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}
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static inline int
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atomic_readandclear_int(volatile int *p)
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{
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rtems_interrupt_level level;
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int tmp;
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rtems_interrupt_disable(level);
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tmp = *p;
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*p = 0;
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rtems_interrupt_enable(level);
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return tmp;
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}
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static inline int
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atomic_load_acq_int(volatile int *p)
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{
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return *p;
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}
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static inline void
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atomic_store_rel_int(volatile int *p, int v)
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{
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*p = v;
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}
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static inline void
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atomic_add_32(volatile uint32_t *p, uint32_t v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p += v;
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rtems_interrupt_enable(level);
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}
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#define atomic_add_acq_32 atomic_add_32
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#define atomic_add_rel_32 atomic_add_32
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static inline void
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atomic_subtract_32(volatile uint32_t *p, uint32_t v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p -= v;
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rtems_interrupt_enable(level);
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}
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#define atomic_subtract_acq_32 atomic_subtract_32
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#define atomic_subtract_rel_32 atomic_subtract_32
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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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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p |= v;
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rtems_interrupt_enable(level);
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}
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#define atomic_set_acq_32 atomic_set_32
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#define atomic_set_rel_32 atomic_set_32
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static inline void
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atomic_clear_32(volatile uint32_t *p, uint32_t v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p &= ~v;
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rtems_interrupt_enable(level);
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}
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#define atomic_clear_acq_32 atomic_clear_32
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#define atomic_clear_rel_32 atomic_clear_32
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static inline int
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atomic_cmpset_32(volatile uint32_t *p, uint32_t cmp, uint32_t set)
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{
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rtems_interrupt_level level;
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int rv;
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rtems_interrupt_disable(level);
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rv = *p == cmp;
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if (rv) {
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*p = set;
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}
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rtems_interrupt_enable(level);
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return rv;
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}
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#define atomic_cmpset_acq_32 atomic_cmpset_32
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#define atomic_cmpset_rel_32 atomic_cmpset_32
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static inline uint32_t
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atomic_fetchadd_32(volatile uint32_t *p, uint32_t v)
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{
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rtems_interrupt_level level;
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uint32_t tmp;
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rtems_interrupt_disable(level);
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tmp = *p;
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*p += v;
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rtems_interrupt_enable(level);
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return tmp;
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}
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static inline uint32_t
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atomic_readandclear_32(volatile uint32_t *p)
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{
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rtems_interrupt_level level;
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uint32_t tmp;
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rtems_interrupt_disable(level);
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tmp = *p;
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*p = 0;
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rtems_interrupt_enable(level);
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return tmp;
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}
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static inline uint32_t
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atomic_load_acq_32(volatile uint32_t *p)
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{
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return *p;
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}
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static inline void
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atomic_store_rel_32(volatile uint32_t *p, uint32_t v)
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{
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*p = v;
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}
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static inline void
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atomic_add_long(volatile long *p, long v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p += v;
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rtems_interrupt_enable(level);
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}
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#define atomic_add_acq_long atomic_add_long
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#define atomic_add_rel_long atomic_add_long
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static inline void
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atomic_subtract_long(volatile long *p, long v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p -= v;
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rtems_interrupt_enable(level);
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}
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#define atomic_subtract_acq_long atomic_subtract_long
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#define atomic_subtract_rel_long atomic_subtract_long
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static inline void
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atomic_set_long(volatile long *p, long v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p |= v;
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rtems_interrupt_enable(level);
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}
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#define atomic_set_acq_long atomic_set_long
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#define atomic_set_rel_long atomic_set_long
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static inline void
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atomic_clear_long(volatile long *p, long v)
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{
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rtems_interrupt_level level;
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rtems_interrupt_disable(level);
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*p &= ~v;
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rtems_interrupt_enable(level);
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}
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#define atomic_clear_acq_long atomic_clear_long
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#define atomic_clear_rel_long atomic_clear_long
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static inline int
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atomic_cmpset_long(volatile long *p, long cmp, long set)
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{
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rtems_interrupt_level level;
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int rv;
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rtems_interrupt_disable(level);
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rv = *p == cmp;
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if (rv) {
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*p = set;
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}
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rtems_interrupt_enable(level);
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return rv;
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}
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#define atomic_cmpset_acq_long atomic_cmpset_long
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#define atomic_cmpset_rel_long atomic_cmpset_long
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static inline long
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atomic_fetchadd_long(volatile long *p, long v)
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{
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rtems_interrupt_level level;
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long tmp;
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rtems_interrupt_disable(level);
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tmp = *p;
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*p += v;
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rtems_interrupt_enable(level);
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return tmp;
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}
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static inline long
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atomic_readandclear_long(volatile long *p)
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{
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rtems_interrupt_level level;
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long tmp;
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rtems_interrupt_disable(level);
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tmp = *p;
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*p = 0;
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rtems_interrupt_enable(level);
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return tmp;
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}
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static inline long
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atomic_load_acq_long(volatile long *p)
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{
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return *p;
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}
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static inline void
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atomic_store_rel_long(volatile long *p, long v)
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{
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*p = v;
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}
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#endif /* _RTEMS_BSD_MACHINE_ATOMIC_H_ */
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