chrome/utility/safe_browsing/mac/convert_big_endian.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_UTILITY_SAFE_BROWSING_MAC_CONVERT_BIG_ENDIAN_H_
   6 #define CHROME_UTILITY_SAFE_BROWSING_MAC_CONVERT_BIG_ENDIAN_H_
   7
   8 #include <libkern/OSByteOrder.h>
   9 #include <sys/types.h>
  10
  11 // This file contains byte swapping routines for use in safe_browsing::dmg. The
  12 // pattern is to use type-based overloading of the form ConvertBigEndian(T*) to
  13 // swap all structures from big-endian to host-endian. This file provides the
  14 // implementations for scalars, which are inlined since the OSSwap functions
  15 // themselves are macros that call compiler intrinsics.
  16
  17 namespace safe_browsing {
  18 namespace dmg {
  19
  20 inline void ConvertBigEndian(uint16_t* x) {
  21   *x = OSSwapBigToHostInt16(*x);
  22 }
  23
  24 inline void ConvertBigEndian(int16_t* x) {
  25   *x = OSSwapBigToHostInt16(*x);
  26 }
  27
  28 inline void ConvertBigEndian(uint32_t* x) {
  29   *x = OSSwapBigToHostInt32(*x);
  30 }
  31
  32 inline void ConvertBigEndian(uint64_t* x) {
  33   *x = OSSwapBigToHostInt64(*x);
  34 }
  35
  36 }  // namespace dmg
  37 }  // namespace safe_browsing
  38
  39 #endif  // CHROME_UTILITY_SAFE_BROWSING_MAC_CONVERT_BIG_ENDIAN_H_