1 /* ===-- bswapdi2.c - Implement __bswapdi2 ---------------------------------===
3 * The LLVM Compiler Infrastructure
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
8 * ===----------------------------------------------------------------------===
10 * This file implements __bswapdi2 for the compiler_rt library.
12 * ===----------------------------------------------------------------------===
17 COMPILER_RT_ABI uint64_t __bswapdi2(uint64_t u) {
19 (((u)&0xff00000000000000ULL) >> 56) |
20 (((u)&0x00ff000000000000ULL) >> 40) |
21 (((u)&0x0000ff0000000000ULL) >> 24) |
22 (((u)&0x000000ff00000000ULL) >> 8) |
23 (((u)&0x00000000ff000000ULL) << 8) |
24 (((u)&0x0000000000ff0000ULL) << 24) |
25 (((u)&0x000000000000ff00ULL) << 40) |
26 (((u)&0x00000000000000ffULL) << 56));