MdePkg/Library/BaseMemoryLibSse2/X64/SetMem16.S

   1 #
   2 # ConvertAsm.py: Automatically generated from SetMem16.asm
   3 #
   4 #------------------------------------------------------------------------------
   5 #
   6 # Copyright (c) 2006 - 2008, Intel Corporation
   7 # All rights reserved. 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 #   SetMem16.S
  18 #
  19 # Abstract:
  20 #
  21 #   SetMem16 function
  22 #
  23 # Notes:
  24 #
  25 #------------------------------------------------------------------------------
  26
  27
  28 #------------------------------------------------------------------------------
  29 #  VOID *
  30 #  EFIAPI
  31 #  InternalMemSetMem16 (
  32 #    IN VOID   *Buffer,
  33 #    IN UINTN  Count,
  34 #    IN UINT16 Value
  35 #    )
  36 #------------------------------------------------------------------------------
  37 .intel_syntax noprefix
  38 ASM_GLOBAL ASM_PFX(InternalMemSetMem16)
  39 ASM_PFX(InternalMemSetMem16):
  40     push    rdi
  41     mov     rdi, rcx
  42     mov     r9, rdi
  43     xor     rcx, rcx
  44     sub     rcx, rdi
  45     and     rcx, 15
  46     mov     rax, r8
  47     jz      L0
  48     shr     rcx, 1
  49     cmp     rcx, rdx
  50     cmova   rcx, rdx
  51     sub     rdx, rcx
  52     rep     stosw
  53 L0:
  54     mov     rcx, rdx
  55     and     edx, 7
  56     shr     rcx, 3
  57     jz      L_SetWords
  58     movd    xmm0, eax
  59     pshuflw xmm0, xmm0, 0
  60     movlhps xmm0, xmm0
  61 L1:
  62     movntdq [rdi], xmm0
  63     add     rdi, 16
  64     loop    L1
  65     mfence
  66 L_SetWords:
  67     mov     ecx, edx
  68     rep     stosw
  69     mov     rax, r9
  70     pop     rdi
  71     ret