;------------------------------------------------------------------------------ | |
; | |
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> | |
; 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: | |
; | |
; ZeroMem.Asm | |
; | |
; Abstract: | |
; | |
; ZeroMem function | |
; | |
; Notes: | |
; | |
;------------------------------------------------------------------------------ | |
.code | |
;------------------------------------------------------------------------------ | |
; VOID * | |
; InternalMemZeroMem ( | |
; IN VOID *Buffer, | |
; IN UINTN Count | |
; ); | |
;------------------------------------------------------------------------------ | |
InternalMemZeroMem PROC USES rdi | |
push rcx ; push Buffer | |
xor rax, rax ; rax = 0 | |
mov rdi, rcx ; rdi = Buffer | |
mov rcx, rdx ; rcx = Count | |
shr rcx, 3 ; rcx = rcx / 8 | |
and rdx, 7 ; rdx = rdx & 7 | |
cld | |
rep stosq | |
mov rcx, rdx ; rcx = rdx | |
rep stosb | |
pop rax ; rax = Buffer | |
ret | |
InternalMemZeroMem ENDP | |
END |