| Dimitry Andric | 8779ea7 | 2017-05-25 14:52:14 +0000 | [diff] [blame] | 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 __bswapdi2(uint64_t u) { |
| 18 | return ( |
| 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)); |
| 27 | } |