MdePkg/Library/BaseMemoryLibMmx/X64/SetMem.S

   1 #
   2 # ConvertAsm.py: Automatically generated from SetMem.asm
   3 #
   4 #------------------------------------------------------------------------------
   5 #
   6 # Copyright (c) 2006 - 2018, 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 #   SetMem.S
  18 #
  19 # Abstract:
  20 #
  21 #   SetMem function
  22 #
  23 # Notes:
  24 #
  25 #------------------------------------------------------------------------------
  26
  27
  28 #------------------------------------------------------------------------------
  29 #  VOID *
  30 #  EFIAPI
  31 #  InternalMemSetMem (
  32 #    IN VOID   *Buffer,
  33 #    IN UINTN  Count,
  34 #    IN UINT8  Value
  35 #    )
  36 #------------------------------------------------------------------------------
  37 ASM_GLOBAL ASM_PFX(InternalMemSetMem)
  38 ASM_PFX(InternalMemSetMem):
  39     push    %rdi
  40     movq    %r8, %rax
  41     movb    %al, %ah
  42     movd    %rax, %mm0
  43     movq    %rcx, %r8
  44     movq    %r8, %rdi                     # rdi <- Buffer
  45     movq    %rdx, %rcx
  46     andq    $7, %rdx
  47     shrq    $3, %rcx
  48     jz      L_SetBytes
  49     .byte   0x0f, 0x70, 0x0C0, 0x00
  50 L0:
  51     movntq  %mm0, (%rdi)
  52     addq    $8, %rdi
  53     loop    L0
  54     mfence
  55 L_SetBytes:
  56     movl    %edx, %ecx
  57     rep       stosb
  58     movq    %r8, %rax
  59     pop     %rdi
  60     ret
  61