MdePkg/Library/BaseMemoryLibRepStr/Ia32/ZeroMem.s

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2006, 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 #
  14 #   ZeroMem.Asm
  15 #
  16 # Abstract:
  17 #
  18 #   ZeroMem function
  19 #
  20 # Notes:
  21 #
  22 #------------------------------------------------------------------------------
  23
  24     .386:
  25     .code:
  26
  27 .global InternalMemZeroMem
  28 InternalMemZeroMem:
  29     push    %edi
  30     xorl    %eax,%eax
  31     movl    8(%esp),%edi
  32     movl    12(%esp),%ecx
  33     movl    %ecx,%edx
  34     shrl    $2,%ecx
  35     andl    $3,%edx
  36     pushl   %edi
  37     rep
  38     stosl
  39     movl    %edx,%ecx
  40     rep
  41     stosb
  42     popl    %eax
  43     pop     %edi
  44     ret