MdePkg/Library/BaseMemoryLibSse2/Ia32/SetMem64.asm

   1 //
   2 // Include common header file for this module.
   3 //
   4
   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.asm
  20 ;
  21 ; Abstract:
  22 ;
  23 ;   SetMem64 function
  24 ;
  25 ; Notes:
  26 ;
  27 ;------------------------------------------------------------------------------
  28
  29     .686
  30     .model  flat,C
  31     .xmm
  32     .code
  33
  34 ;------------------------------------------------------------------------------
  35 ;  VOID *
  36 ;  EFIAPI
  37 ;  InternalMemSetMem64 (
  38 ;    IN VOID   *Buffer,
  39 ;    IN UINTN  Count,
  40 ;    IN UINT64 Value
  41 ;    )
  42 ;------------------------------------------------------------------------------
  43 InternalMemSetMem64 PROC
  44     mov     eax, [esp + 4]              ; eax <- Buffer
  45     mov     ecx, [esp + 8]              ; ecx <- Count
  46     test    al, 8
  47     mov     edx, eax
  48     movq    xmm0, [esp + 12]
  49     jz      @F
  50     movq    [edx], xmm0
  51     add     edx, 8
  52     dec     ecx
  53 @@:
  54     shr     ecx, 1
  55     jz      @SetQwords
  56     movlhps xmm0, xmm0
  57 @@:
  58     movntdq [edx], xmm0
  59     lea     edx, [edx + 16]
  60     loop    @B
  61     mfence
  62 @SetQwords:
  63     jnc     @F
  64     movq    [edx], xmm0
  65 @@:
  66     ret
  67 InternalMemSetMem64 ENDP
  68
  69     END