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.asm 15 ; 16 ; Abstract: 17 ; 18 ; SetMem16 function 19 ; 20 ; Notes: 21 ; 22 ;------------------------------------------------------------------------------ 23 24 .code 25 26 ;------------------------------------------------------------------------------ 27 ; VOID * 28 ; EFIAPI 29 ; InternalMemSetMem16 ( 30 ; OUT VOID *Buffer, 31 ; IN UINTN Length, 32 ; IN UINT16 Value 33 ; ); 34 ;------------------------------------------------------------------------------ 35 InternalMemSetMem16 PROC USES rdi 36 mov rax, r8 37 DB 48h, 0fh, 6eh, 0c0h ; movd mm0, rax 38 mov r8, rcx 39 mov rdi, r8 40 mov rcx, rdx 41 and edx, 3 42 shr rcx, 2 43 jz @SetWords 44 DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h 45 @@: 46 DB 0fh, 0e7h, 07h ; movntq [rdi], mm0 47 add rdi, 8 48 loop @B 49 mfence 50 @SetWords: 51 mov ecx, edx 52 rep stosw 53 mov rax, r8 54 ret 55 InternalMemSetMem16 ENDP 56 57 END 58
