]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - contrib/compiler-rt/lib/builtins/bswapdi2.c
Merge ^/head r318560 through r318657.
[FreeBSD/FreeBSD.git] / contrib / compiler-rt / lib / builtins / bswapdi2.c
1 /* ===-- bswapdi2.c - Implement __bswapdi2 ---------------------------------===
2  *
3  *               The LLVM Compiler Infrastructure
4  *
5  * This file is dual licensed under the MIT and the University of Illinois Open
6  * Source Licenses. See LICENSE.TXT for details.
7  *
8  * ===----------------------------------------------------------------------===
9  *
10  * This file implements __bswapdi2 for the compiler_rt library.
11  *
12  * ===----------------------------------------------------------------------===
13  */
14
15 #include "int_lib.h"
16
17 COMPILER_RT_ABI uint64_t
18 __bswapdi2 (uint64_t u)
19 {
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));
28 }