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 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
