MdeModulePkg/Universal/Network/PxeBcDxe/Hton.h

   1 /** @file
   2
   3 Copyright (c) 2004, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module name:
  13   hton.h
  14
  15 Abstract:
  16   Byte swapping macros.
  17
  18
  19 **/
  20
  21 #ifndef _HTON_H_
  22 #define _HTON_H_
  23
  24 //
  25 // Only Intel order functions are defined at this time.
  26 //
  27 #define HTONS(v)  (UINT16) ((((v) << 8) & 0xff00) + (((v) >> 8) & 0x00ff))
  28
  29 #define HTONL(v) \
  30   (UINT32) ((((v) << 24) & 0xff000000) + (((v) << 8) & 0x00ff0000) + (((v) >> 8) & 0x0000ff00) + (((v) >> 24) & 0x000000ff))
  31
  32 #define HTONLL(v) swap64 (v)
  33
  34 #define U8PTR(na) ((UINT8 *) &(na))
  35
  36 #define NTOHS(ns) ((UINT16) (((*U8PTR (ns)) << 8) +*(U8PTR (ns) + 1)))
  37
  38 #define NTOHL(ns) \
  39     ((UINT32) (((*U8PTR (ns)) << 24) + ((*(U8PTR (ns) + 1)) << 16) + ((*(U8PTR (ns) + 2)) << 8) +*(U8PTR (ns) + 3)))
  40
  41 #endif /* _HTON_H_ */
  42
  43 /* EOF - hton.h */