1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef _CM4F_ATOMIC_H_
18 #define _CM4F_ATOMIC_H_
19
atomicCmpXchgPtr(volatile uintptr_t * word,uintptr_t prevVal,uintptr_t newVal)20 static inline bool atomicCmpXchgPtr(volatile uintptr_t *word, uintptr_t prevVal, uintptr_t newVal) {
21 // 32-bit CPU architecture so fall back appropriately
22 return atomicCmpXchg32bits((volatile uint32_t *) word, (uint32_t) prevVal, (uint32_t) newVal);
23 }
24
25 #endif
26
27