MdePkg/Library/BaseMemoryLibOptPei/X64/SetMem64.nasm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   5 ;
   6 ; Module Name:
   7 ;
   8 ;   SetMem64.Asm
   9 ;
  10 ; Abstract:
  11 ;
  12 ;   SetMem64 function
  13 ;
  14 ; Notes:
  15 ;
  16 ;------------------------------------------------------------------------------
  17
  18     DEFAULT REL
  19     SECTION .text
  20
  21 ;------------------------------------------------------------------------------
  22 ;  VOID *
  23 ;  InternalMemSetMem64 (
  24 ;    IN VOID   *Buffer,
  25 ;    IN UINTN  Count,
  26 ;    IN UINT64 Value
  27 ;    )
  28 ;------------------------------------------------------------------------------
  29 global ASM_PFX(InternalMemSetMem64)
  30 ASM_PFX(InternalMemSetMem64):
  31     push    rdi
  32     mov     rdi, rcx
  33     mov     rax, r8
  34     xchg    rcx, rdx
  35     rep     stosq
  36     mov     rax, rdx
  37     pop     rdi
  38     ret
  39