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/* Copyright 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Atomic operations for emulator */
#ifndef __CROS_EC_ATOMIC_H
#define __CROS_EC_ATOMIC_H
#include "common.h"
typedef int atomic_t;
typedef atomic_t atomic_val_t;
/*
* The atomic_* functions are marked as deprecated as a part of the process of
* transaction to Zephyr compatible atomic functions. These prefixes will be
* removed in the following patches. Please see b:169151160 for more details.
*/
static inline void deprecated_atomic_clear_bits(uint32_t volatile *addr,
uint32_t bits)
{
__sync_and_and_fetch(addr, ~bits);
}
static inline void atomic_clear_bits(atomic_t *addr, atomic_val_t bits)
{
__atomic_fetch_and(addr, ~bits, __ATOMIC_SEQ_CST);
}
static inline void deprecated_atomic_or(uint32_t volatile *addr, uint32_t bits)
{
__sync_or_and_fetch(addr, bits);
}
static inline atomic_val_t atomic_or(atomic_t *addr, atomic_val_t bits)
{
return __atomic_fetch_or(addr, bits, __ATOMIC_SEQ_CST);
}
static inline void deprecated_atomic_add(uint32_t volatile *addr,
uint32_t value)
{
__sync_add_and_fetch(addr, value);
}
static inline atomic_val_t atomic_add(atomic_t *addr, atomic_val_t value)
{
return __atomic_fetch_add(addr, value, __ATOMIC_SEQ_CST);
}
static inline void deprecated_atomic_sub(uint32_t volatile *addr,
uint32_t value)
{
__sync_sub_and_fetch(addr, value);
}
static inline atomic_val_t atomic_sub(atomic_t *addr, atomic_val_t value)
{
return __atomic_fetch_sub(addr, value, __ATOMIC_SEQ_CST);
}
static inline uint32_t deprecated_atomic_read_clear(uint32_t volatile *addr)
{
return __sync_fetch_and_and(addr, 0);
}
static inline atomic_val_t atomic_read_clear(atomic_t *addr)
{
return __atomic_exchange_n(addr, 0, __ATOMIC_SEQ_CST);
}
#endif /* __CROS_EC_ATOMIC_H */
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