;------------------------------------------------------------------------------ ; ; Copyright (c) 2007, Intel Corporation. All rights reserved.
; This program and the accompanying materials ; are licensed and made available under the terms and conditions of the BSD License ; which accompanies this distribution. The full text of the license may be found at ; http://opensource.org/licenses/bsd-license.php ; ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. ; ; Module Name: ; ; SetMem.asm ; ; Abstract: ; ; memset function ; ; Notes: ; ;------------------------------------------------------------------------------ .code ;------------------------------------------------------------------------------ ; VOID * ; memset ( ; OUT VOID *Buffer, ; IN UINT8 Value, ; IN UINTN Count ; ) ;------------------------------------------------------------------------------ memset PROC USES rdi cmp r8, 0 ; if Size == 0, do nothing mov r9, rcx je @SetDone mov al, dl mov ah, al shrd edx, eax, 16 shld eax, edx, 16 mov rdi, rcx mov rcx, r8 shr rcx, 2 rep stosd mov rcx, r8 and rcx, 3 rep stosb @SetDone: mov rax, r9 ret memset ENDP END