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.nasm 15 ; 16 ; Abstract: 17 ; 18 ; SetMem64 function 19 ; 20 ; Notes: 21 ; 22 ;------------------------------------------------------------------------------ 23 24 DEFAULT REL 25 SECTION .text 26 27 ;------------------------------------------------------------------------------ 28 ; VOID * 29 ; InternalMemSetMem64 ( 30 ; IN VOID *Buffer, 31 ; IN UINTN Count, 32 ; IN UINT64 Value 33 ; ) 34 ;------------------------------------------------------------------------------ 35 global ASM_PFX(InternalMemSetMem64) 36 ASM_PFX(InternalMemSetMem64): 37 DB 0x49, 0xf, 0x6e, 0xc0 ; movd mm0, r8 (Value) 38 mov rax, rcx ; rax <- Buffer 39 xchg rcx, rdx ; rcx <- Count 40 .0: 41 DB 0xf, 0xe7, 0x2 ; movntq [rdx], mm0 42 add rdx, 8 43 loop .0 44 mfence 45 ret 46 47
