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; SetMem.asm 15; 16; Abstract: 17; 18; SetMem function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 .code 25 26;------------------------------------------------------------------------------ 27; VOID * 28; EFIAPI 29; InternalMemSetMem ( 30; OUT VOID *Buffer, 31; IN UINTN Length, 32; IN UINT8 Value 33; ); 34;------------------------------------------------------------------------------ 35InternalMemSetMem PROC USES rdi 36 mov rax, r8 37 mov ah, al 38 DB 48h, 0fh, 6eh, 0c0h ; movd mm0, rax 39 mov r8, rcx 40 mov rdi, r8 ; rdi <- Buffer 41 mov rcx, rdx 42 and edx, 7 43 shr rcx, 3 44 jz @SetBytes 45 DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h 46@@: 47 DB 0fh, 0e7h, 07h ; movntq [rdi], mm0 48 add rdi, 8 49 loop @B 50 mfence 51@SetBytes: 52 mov ecx, edx 53 rep stosb 54 mov rax, r8 55 ret 56InternalMemSetMem ENDP 57 58 END 59