MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S

   1 #
   2 # ConvertAsm.py: Automatically generated from SetMem64.asm
   3 #
   4 #------------------------------------------------------------------------------
   5 #
   6 # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
   7 # This program and the accompanying materials
   8 # are licensed and made available under the terms and conditions of the BSD License
   9 # which accompanies this distribution.  The full text of the license may be found at
  10 # http://opensource.org/licenses/bsd-license.php
  11 #
  12 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14 #
  15 # Module Name:
  16 #
  17 #   SetMem64.S
  18 #
  19 # Abstract:
  20 #
  21 #   SetMem64 function
  22 #
  23 # Notes:
  24 #
  25 #------------------------------------------------------------------------------
  26
  27
  28 #------------------------------------------------------------------------------
  29 #  VOID *
  30 #  InternalMemSetMem64 (
  31 #    IN VOID   *Buffer,
  32 #    IN UINTN  Count,
  33 #    IN UINT64 Value
  34 #    )
  35 #------------------------------------------------------------------------------
  36 ASM_GLOBAL ASM_PFX(InternalMemSetMem64)
  37 ASM_PFX(InternalMemSetMem64):
  38     movq    %rcx, %rax                    # rax <- Buffer
  39     xchgq   %rdx, %rcx                    # rcx <- Count & rdx <- Buffer
  40     testb   $8, %dl
  41     movd    %r8, %xmm0
  42     jz      L0
  43     movq    %r8, (%rdx)
  44     addq    $8, %rdx
  45     decq    %rcx
  46 L0:
  47     shrq    $1, %rcx
  48     jz      L_SetQwords
  49     movlhps %xmm0, %xmm0
  50 L1:
  51     movntdq %xmm0, (%rdx)
  52     leaq    16(%rdx), %rdx
  53     loop    L1
  54     mfence
  55 L_SetQwords:
  56     jnc     L2
  57     movq    %r8, (%rdx)
  58 L2:
  59     ret
  60