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/**
* @file
*
* @ingroup rtems_bsd_machine
*
* @brief TODO.
*/
/*
* Copyright (c) 2009, 2010 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _RTEMS_BSD_MACHINE_ATOMIC_H_
#define _RTEMS_BSD_MACHINE_ATOMIC_H_
#ifndef _RTEMS_BSD_MACHINE_RTEMS_BSD_KERNEL_SPACE_H_
#error "the header file <machine/rtems-bsd-kernel-space.h> must be included first"
#endif
#include <rtems.h>
#define mb() RTEMS_COMPILER_MEMORY_BARRIER()
#define wmb() RTEMS_COMPILER_MEMORY_BARRIER()
#define rmb() RTEMS_COMPILER_MEMORY_BARRIER()
static inline void
atomic_add_int(volatile int *p, int v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p += v;
rtems_interrupt_enable(level);
}
#define atomic_add_acq_int atomic_add_int
#define atomic_add_rel_int atomic_add_int
static inline void
atomic_subtract_int(volatile int *p, int v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p -= v;
rtems_interrupt_enable(level);
}
#define atomic_subtract_acq_int atomic_subtract_int
#define atomic_subtract_rel_int atomic_subtract_int
static inline void
atomic_set_int(volatile int *p, int v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p |= v;
rtems_interrupt_enable(level);
}
#define atomic_set_acq_int atomic_set_int
#define atomic_set_rel_int atomic_set_int
static inline void
atomic_clear_int(volatile int *p, int v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p &= ~v;
rtems_interrupt_enable(level);
}
#define atomic_clear_acq_int atomic_clear_int
#define atomic_clear_rel_int atomic_clear_int
static inline int
atomic_cmpset_int(volatile int *p, int cmp, int set)
{
rtems_interrupt_level level;
int rv;
rtems_interrupt_disable(level);
rv = *p == cmp;
if (rv) {
*p = set;
}
rtems_interrupt_enable(level);
return rv;
}
#define atomic_cmpset_acq_int atomic_cmpset_int
#define atomic_cmpset_rel_int atomic_cmpset_int
static inline int
atomic_fetchadd_int(volatile int *p, int v)
{
rtems_interrupt_level level;
int tmp;
rtems_interrupt_disable(level);
tmp = *p;
*p += v;
rtems_interrupt_enable(level);
return tmp;
}
static inline int
atomic_readandclear_int(volatile int *p)
{
rtems_interrupt_level level;
int tmp;
rtems_interrupt_disable(level);
tmp = *p;
*p = 0;
rtems_interrupt_enable(level);
return tmp;
}
static inline int
atomic_load_acq_int(volatile int *p)
{
return *p;
}
static inline void
atomic_store_rel_int(volatile int *p, int v)
{
*p = v;
}
static inline void
atomic_add_32(volatile uint32_t *p, uint32_t v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p += v;
rtems_interrupt_enable(level);
}
#define atomic_add_acq_32 atomic_add_32
#define atomic_add_rel_32 atomic_add_32
static inline void
atomic_subtract_32(volatile uint32_t *p, uint32_t v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p -= v;
rtems_interrupt_enable(level);
}
#define atomic_subtract_acq_32 atomic_subtract_32
#define atomic_subtract_rel_32 atomic_subtract_32
static inline void
atomic_set_32(volatile uint32_t *p, uint32_t v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p |= v;
rtems_interrupt_enable(level);
}
#define atomic_set_acq_32 atomic_set_32
#define atomic_set_rel_32 atomic_set_32
static inline void
atomic_clear_32(volatile uint32_t *p, uint32_t v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p &= ~v;
rtems_interrupt_enable(level);
}
#define atomic_clear_acq_32 atomic_clear_32
#define atomic_clear_rel_32 atomic_clear_32
static inline int
atomic_cmpset_32(volatile uint32_t *p, uint32_t cmp, uint32_t set)
{
rtems_interrupt_level level;
int rv;
rtems_interrupt_disable(level);
rv = *p == cmp;
if (rv) {
*p = set;
}
rtems_interrupt_enable(level);
return rv;
}
#define atomic_cmpset_acq_32 atomic_cmpset_32
#define atomic_cmpset_rel_32 atomic_cmpset_32
static inline uint32_t
atomic_fetchadd_32(volatile uint32_t *p, uint32_t v)
{
rtems_interrupt_level level;
uint32_t tmp;
rtems_interrupt_disable(level);
tmp = *p;
*p += v;
rtems_interrupt_enable(level);
return tmp;
}
static inline uint32_t
atomic_readandclear_32(volatile uint32_t *p)
{
rtems_interrupt_level level;
uint32_t tmp;
rtems_interrupt_disable(level);
tmp = *p;
*p = 0;
rtems_interrupt_enable(level);
return tmp;
}
static inline uint32_t
atomic_load_acq_32(volatile uint32_t *p)
{
return *p;
}
static inline void
atomic_store_rel_32(volatile uint32_t *p, uint32_t v)
{
*p = v;
}
static inline void
atomic_add_long(volatile long *p, long v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p += v;
rtems_interrupt_enable(level);
}
#define atomic_add_acq_long atomic_add_long
#define atomic_add_rel_long atomic_add_long
static inline void
atomic_subtract_long(volatile long *p, long v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p -= v;
rtems_interrupt_enable(level);
}
#define atomic_subtract_acq_long atomic_subtract_long
#define atomic_subtract_rel_long atomic_subtract_long
static inline void
atomic_set_long(volatile long *p, long v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p |= v;
rtems_interrupt_enable(level);
}
#define atomic_set_acq_long atomic_set_long
#define atomic_set_rel_long atomic_set_long
static inline void
atomic_clear_long(volatile long *p, long v)
{
rtems_interrupt_level level;
rtems_interrupt_disable(level);
*p &= ~v;
rtems_interrupt_enable(level);
}
#define atomic_clear_acq_long atomic_clear_long
#define atomic_clear_rel_long atomic_clear_long
static inline int
atomic_cmpset_long(volatile long *p, long cmp, long set)
{
rtems_interrupt_level level;
int rv;
rtems_interrupt_disable(level);
rv = *p == cmp;
if (rv) {
*p = set;
}
rtems_interrupt_enable(level);
return rv;
}
#define atomic_cmpset_acq_long atomic_cmpset_long
#define atomic_cmpset_rel_long atomic_cmpset_long
static inline long
atomic_fetchadd_long(volatile long *p, long v)
{
rtems_interrupt_level level;
long tmp;
rtems_interrupt_disable(level);
tmp = *p;
*p += v;
rtems_interrupt_enable(level);
return tmp;
}
static inline long
atomic_readandclear_long(volatile long *p)
{
rtems_interrupt_level level;
long tmp;
rtems_interrupt_disable(level);
tmp = *p;
*p = 0;
rtems_interrupt_enable(level);
return tmp;
}
static inline long
atomic_load_acq_long(volatile long *p)
{
return *p;
}
static inline void
atomic_store_rel_long(volatile long *p, long v)
{
*p = v;
}
#endif /* _RTEMS_BSD_MACHINE_ATOMIC_H_ */
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