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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; SetMem16.nasm
;
; Abstract:
;
; SetMem16 function
;
; Notes:
;
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; VOID *
; InternalMemSetMem16 (
; IN VOID *Buffer,
; IN UINTN Count,
; IN UINT16 Value
; )
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemSetMem16)
ASM_PFX(InternalMemSetMem16):
push rdi
mov rdi, rcx
mov r9, rdi
xor rcx, rcx
sub rcx, rdi
and rcx, 63
mov rax, r8
jz .0
shr rcx, 1
cmp rcx, rdx
cmova rcx, rdx
sub rdx, rcx
rep stosw
.0:
mov rcx, rdx
and edx, 31
shr rcx, 5
jz @SetWords
movd xmm0, eax
pshuflw xmm0, xmm0, 0
movlhps xmm0, xmm0
.1:
movntdq [rdi], xmm0
movntdq [rdi + 16], xmm0
movntdq [rdi + 32], xmm0
movntdq [rdi + 48], xmm0
add rdi, 64
loop .1
mfence
@SetWords:
mov ecx, edx
rep stosw
mov rax, r9
pop rdi
ret
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