| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef _CM4F_ATOMIC_H_ |
| #define _CM4F_ATOMIC_H_ |
| |
| // real definition available in CPU-independent header file |
| extern bool atomicCmpXchg32bits(volatile uint32_t *word, uint32_t prevVal, uint32_t newVal); |
| |
| inline bool atomicCmpXchgPtr(volatile uintptr_t *word, uintptr_t prevVal, uintptr_t newVal) { |
| // 32-bit CPU architecture so fall back appropriately |
| return atomicCmpXchg32bits((uint32_t*) word, (uintptr_t) prevVal, (uintptr_t) newVal); |
| } |
| |
| #endif |
| |
