1 /* 2 * Copyright 2013, 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 #include <portability.h> 18 #include <sys/types.h> 19 20 /* 21 * REV and REV16 weren't available on ARM5 or ARM4. 22 */ 23 #if !defined __ARM_ARCH_5__ && !defined __ARM_ARCH_5T__ && \ 24 !defined __ARM_ARCH_5TE__ && !defined __ARM_ARCH_5TEJ__ && \ 25 !defined __ARM_ARCH_4T__ && !defined __ARM_ARCH_4__ 26 WRAP(__swap16md)27uint16_t WRAP(__swap16md)(uint16_t x) { 28 register uint16_t _x = (x); 29 __asm volatile ("rev16 %0, %0" : "+l" (_x)); 30 return _x; 31 } 32 WRAP(__swap32md)33uint32_t WRAP(__swap32md)(uint32_t x) { 34 register uint32_t _x = (x); 35 __asm volatile ("rev %0, %0" : "+l" (_x)); 36 return _x; 37 } 38 39 #endif 40 41