1 //===-- bswapdi2.c - Implement __bswapdi2 ---------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements __bswapdi2 for the compiler_rt library. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "int_lib.h" 14 15 COMPILER_RT_ABI uint64_t __bswapdi2(uint64_t u) { 16 return ( 17 (((u)&0xff00000000000000ULL) >> 56) | 18 (((u)&0x00ff000000000000ULL) >> 40) | 19 (((u)&0x0000ff0000000000ULL) >> 24) | 20 (((u)&0x000000ff00000000ULL) >> 8) | 21 (((u)&0x00000000ff000000ULL) << 8) | 22 (((u)&0x0000000000ff0000ULL) << 24) | 23 (((u)&0x000000000000ff00ULL) << 40) | 24 (((u)&0x00000000000000ffULL) << 56)); 25 } 26