MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S

   1 #
   2 # ConvertAsm.py: Automatically generated from SetMem64.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 #   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 .intel_syntax noprefix
  37 .globl ASM_PFX(InternalMemSetMem64)
  38 ASM_PFX(InternalMemSetMem64):
  39     mov     rax, rcx                    # rax <- Buffer
  40     xchg    rcx, rdx                    # rcx <- Count & rdx <- Buffer
  41     test    dl, 8
  42     movq    xmm0, r8
  43     jz      L0
  44     mov     [rdx], r8
  45     add     rdx, 8
  46     dec     rcx
  47 L0:
  48     shr     rcx, 1
  49     jz      L_SetQwords
  50     movlhps xmm0, xmm0
  51 L1:
  52     movntdq [rdx], xmm0
  53     lea     rdx, [rdx + 16]
  54     loop    L1
  55     mfence
  56 L_SetQwords:
  57     jnc     L2
  58     mov     [rdx], r8
  59 L2:
  60     ret
  61