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 SECTION .text 25 26 ;------------------------------------------------------------------------------ 27 ; VOID * 28 ; EFIAPI 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 edi 38 mov edx, [esp + 12] 39 mov edi, [esp + 8] 40 xor ecx, ecx 41 sub ecx, edi 42 and ecx, 15 ; ecx + edi aligns on 16-byte boundary 43 mov eax, [esp + 16] 44 jz .0 45 shr ecx, 1 46 cmp ecx, edx 47 cmova ecx, edx 48 sub edx, ecx 49 rep stosw 50 .0: 51 mov ecx, edx 52 and edx, 7 53 shr ecx, 3 54 jz @SetWords 55 movd xmm0, eax 56 pshuflw xmm0, xmm0, 0 57 movlhps xmm0, xmm0 58 .1: 59 movntdq [edi], xmm0 ; edi should be 16-byte aligned 60 add edi, 16 61 loop .1 62 mfence 63 @SetWords: 64 mov ecx, edx 65 rep stosw 66 mov eax, [esp + 8] 67 pop edi 68 ret 69 70
