MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.S

   1 //
   2 // Include common header file for this module.
   3 //
   4 #include "CommonHeader.h"
   5
   6 #------------------------------------------------------------------------------
   7 #
   8 # Copyright (c) 2006, Intel Corporation
   9 # All rights reserved. This program and the accompanying materials
  10 # are licensed and made available under the terms and conditions of the BSD License
  11 # which accompanies this distribution.  The full text of the license may be found at
  12 # http://opensource.org/licenses/bsd-license.php
  13 #
  14 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  15 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  16 #
  17 # Module Name:
  18 #
  19 #   SetMem64.S
  20 #
  21 # Abstract:
  22 #
  23 #   SetMem64 function
  24 #
  25 # Notes:
  26 #
  27 #------------------------------------------------------------------------------
  28
  29 .globl _InternalMemSetMem64
  30
  31 #------------------------------------------------------------------------------
  32 #  VOID *
  33 #  EFIAPI
  34 #  InternalMemSetMem64 (
  35 #    IN VOID   *Buffer,
  36 #    IN UINTN  Count,
  37 #    IN UINT64 Value
  38 #    );
  39 #------------------------------------------------------------------------------
  40 _InternalMemSetMem64:
  41     movl    4(%esp), %eax
  42     movl    8(%esp), %ecx
  43     testb   $8, %al
  44     movl    %eax, %edx
  45     movq    0xc(%esp), %xmm0
  46     jz      L1
  47     movq    %xmm0, (%edx)
  48     addl    $8, %edx
  49     decl    %ecx
  50 L1:
  51     shrl    %ecx
  52     jz      L_SetQwords
  53     movlhps %xmm0, %xmm0
  54 L2:
  55     movntdq %xmm0, (%edx)
  56     leal    16(%edx), %edx
  57     loop    L2
  58     mfence
  59 L_SetQwords:
  60     jnc     L3
  61     movq    %xmm0, (%edx)
  62 L3:
  63     ret