vendor/compiler_builtins/compiler-rt/lib/builtins/bswapsi2.c

   1 /* ===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------===
   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 __bswapsi2 for the compiler_rt library.
  11  *
  12  * ===----------------------------------------------------------------------===
  13  */
  14
  15 #include "int_lib.h"
  16
  17 COMPILER_RT_ABI uint32_t __bswapsi2(uint32_t u) {
  18   return (
  19       (((u)&0xff000000) >> 24) |
  20       (((u)&0x00ff0000) >> 8)  |
  21       (((u)&0x0000ff00) << 8)  |
  22       (((u)&0x000000ff) << 24));
  23 }