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; SetMem64.asm 15; 16; Abstract: 17; 18; SetMem64 function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 .code 25 26;------------------------------------------------------------------------------ 27; VOID * 28; InternalMemSetMem64 ( 29; IN VOID *Buffer, 30; IN UINTN Count, 31; IN UINT64 Value 32; ) 33;------------------------------------------------------------------------------ 34InternalMemSetMem64 PROC 35 mov rax, rcx ; rax <- Buffer 36 xchg rcx, rdx ; rcx <- Count & rdx <- Buffer 37 test dl, 8 38 movd xmm0, r8 39 jz @F 40 mov [rdx], r8 41 add rdx, 8 42 dec rcx 43@@: 44 shr rcx, 1 45 jz @SetQwords 46 movlhps xmm0, xmm0 47@@: 48 movntdq [rdx], xmm0 49 lea rdx, [rdx + 16] 50 loop @B 51 mfence 52@SetQwords: 53 jnc @F 54 mov [rdx], r8 55@@: 56 ret 57InternalMemSetMem64 ENDP 58 59 END 60