MdePkg/Library/BaseMemoryLibSse2/X64/SetMem32.asm File Reference


Detailed Description

;------------------------------------------------------------------------------
;
; Copyright (c) 2006, 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:
;
; SetMem32.asm
;
; Abstract:
;
; SetMem32 function
;
; Notes:
;
;------------------------------------------------------------------------------

.code

;------------------------------------------------------------------------------
; VOID *
; InternalMemSetMem32 (
; IN VOID *Buffer,
; IN UINTN Count,
; IN UINT8 Value
; )
;------------------------------------------------------------------------------
InternalMemSetMem32 PROC USES rdi
mov rdi, rcx
mov r9, rdi
xor rcx, rcx
sub rcx, rdi
and rcx, 15
mov rax, r8
jz
shr rcx, 2
cmp rcx, rdx
cmova rcx, rdx
sub rdx, rcx
rep stosd
@:
mov rcx, rdx
and edx, 3
shr rcx, 2
jz
movd xmm0, eax
pshufd xmm0, xmm0, 0
@:
movntdq [rdi], xmm0
add rdi, 16
loop
mfence
:
mov ecx, edx
rep stosd
mov rax, r9
ret
InternalMemSetMem32 ENDP

END


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