OldMdePkg/Library/BaseLib/Ia32/SwapBytes64.c

   1 /** @file
   2   Implementation of 64-bit swap bytes
   3
   4   Copyright (c) 2006 - 2007, Intel Corporation<BR>
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 UINT64
  16 EFIAPI
  17 InternalMathSwapBytes64 (
  18   IN      UINT64                    Operand
  19   )
  20 {
  21   _asm {
  22     mov     eax, dword ptr [Operand + 4]
  23     mov     edx, dword ptr [Operand + 0]
  24     bswap   eax
  25     bswap   edx
  26   }
  27 }
  28