MdePkg/Library/BaseLib/Ia32/WriteMm3.c

   1 /** @file
   2   AsmWriteMm3 function
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 /**
  10   Writes the current value of 64-bit MMX Register #3 (MM3).
  11
  12   Writes the current value of MM3. This function is only available on IA32 and
  13   x64.
  14
  15   @param  Value The 64-bit value to write to MM3.
  16
  17 **/
  18 VOID
  19 EFIAPI
  20 AsmWriteMm3 (
  21   IN UINT64  Value
  22   )
  23 {
  24   _asm {
  25     movq    mm3, qword ptr [Value]
  26     emms
  27   }
  28 }