MdePkg/Library/BaseLib/Ia32/Lfence.nasm

   1 ;------------------------------------------------------------------------------ ;
   2 ; Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
   3 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   4 ;
   5 ; Module Name:
   6 ;
   7 ;   Lfence.nasm
   8 ;
   9 ; Abstract:
  10 ;
  11 ;   Performs a serializing operation on all load-from-memory instructions that
  12 ;   were issued prior to the call of this function.
  13 ;
  14 ; Notes:
  15 ;
  16 ;------------------------------------------------------------------------------
  17
  18     SECTION .text
  19
  20 ;------------------------------------------------------------------------------
  21 ; VOID
  22 ; EFIAPI
  23 ; AsmLfence (
  24 ;   VOID
  25 ;   );
  26 ;------------------------------------------------------------------------------
  27 global ASM_PFX(AsmLfence)
  28 ASM_PFX(AsmLfence):
  29     lfence
  30     ret