compiler-rt/lib/builtins/bswapsi2.c

   1 //===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file implements __bswapsi2 for the compiler_rt library.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "int_lib.h"
  14
  15 COMPILER_RT_ABI uint32_t __bswapsi2(uint32_t u) {
  16   return ((((u)&0xff000000) >> 24) |
  17           (((u)&0x00ff0000) >> 8)  |
  18           (((u)&0x0000ff00) << 8)  |
  19           (((u)&0x000000ff) << 24));
  20 }