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
18 __bswapdi2 (uint64_t u)
20 return ((((u) & 0xff00000000000000ULL) >> 56)
21 | (((u) & 0x00ff000000000000ULL) >> 40)
22 | (((u) & 0x0000ff0000000000ULL) >> 24)
23 | (((u) & 0x000000ff00000000ULL) >> 8)
24 | (((u) & 0x00000000ff000000ULL) << 8)
25 | (((u) & 0x0000000000ff0000ULL) << 24)
26 | (((u) & 0x000000000000ff00ULL) << 40)
27 | (((u) & 0x00000000000000ffULL) << 56));