1 ;------------------------------------------------------------------------------ 2 ; 3 ; Copyright (c) 2006, 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 ; SetMem16.nasm 15 ; 16 ; Abstract: 17 ; 18 ; SetMem16 function 19 ; 20 ; Notes: 21 ; 22 ;------------------------------------------------------------------------------ 23 24 DEFAULT REL 25 SECTION .text 26 27 ;------------------------------------------------------------------------------ 28 ; VOID * 29 ; InternalMemSetMem16 ( 30 ; IN VOID *Buffer, 31 ; IN UINTN Count, 32 ; IN UINT16 Value 33 ; ) 34 ;------------------------------------------------------------------------------ 35 global ASM_PFX(InternalMemSetMem16) 36 ASM_PFX(InternalMemSetMem16): 37 push rdi 38 mov rdi, rcx 39 mov r9, rdi 40 xor rcx, rcx 41 sub rcx, rdi 42 and rcx, 15 43 mov rax, r8 44 jz .0 45 shr rcx, 1 46 cmp rcx, rdx 47 cmova rcx, rdx 48 sub rdx, rcx 49 rep stosw 50 .0: 51 mov rcx, rdx 52 and edx, 7 53 shr rcx, 3 54 jz @SetWords 55 movd xmm0, eax 56 pshuflw xmm0, xmm0, 0 57 movlhps xmm0, xmm0 58 .1: 59 movntdq [rdi], xmm0 60 add rdi, 16 61 loop .1 62 mfence 63 @SetWords: 64 mov ecx, edx 65 rep stosw 66 mov rax, r9 67 pop rdi 68 ret 69 70
