blob: 17721390f85d3feb33a693ebe8de507d9816b708 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/* Copyright (c) 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"
static inline void atomic_clear(uint32_t volatile *addr, uint32_t bits)
{
__sync_and_and_fetch(addr, ~bits);
}
static inline void atomic_or(uint32_t volatile *addr, uint32_t bits)
{
__sync_or_and_fetch(addr, bits);
}
static inline void atomic_add(uint32_t volatile *addr, uint32_t value)
{
__sync_add_and_fetch(addr, value);
}
static inline void atomic_sub(uint32_t volatile *addr, uint32_t value)
{
__sync_sub_and_fetch(addr, value);
}
static inline uint32_t atomic_read_clear(uint32_t volatile *addr)
{
return __sync_fetch_and_and(addr, 0);
}
#endif /* __CROS_EC_ATOMIC_H */
|