EdkCompatibilityPkg/Foundation/Library/CompilerStub/X64/memsetRep1.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
   4 ; This program and the accompanying materials
   5 ; are licensed and made available under the terms and conditions of the BSD License
   6 ; which accompanies this distribution.  The full text of the license may be found at
   7 ; http://opensource.org/licenses/bsd-license.php
   8 ;
   9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 ;
  12 ; Module Name:
  13 ;
  14 ;   memsetRep1.asm
  15 ;
  16 ; Abstract:
  17 ;
  18 ;   SetMem function
  19 ;
  20 ; Notes:
  21 ;
  22 ;------------------------------------------------------------------------------
  23
  24     .code
  25
  26 ;------------------------------------------------------------------------------
  27 ; VOID *
  28 ; memset (
  29 ;   OUT     VOID                      *Buffer,
  30 ;   IN      UINTN                     Size,
  31 ;   IN      UINT8                     Value
  32 ;   );
  33 ;------------------------------------------------------------------------------
  34 memset   PROC    USES    rdi
  35     cmp     rdx, 0                      ; if Size == 0, do nothing
  36     mov     r9,  rcx
  37     je      @SetDone
  38     mov     rax, r8
  39     mov     rdi, rcx
  40     mov     rcx, rdx
  41     rep     stosb
  42 @SetDone:
  43     mov     rax, r9
  44     ret
  45 memset   ENDP
  46
  47     END
  48