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; SetMem32.nasm 15; 16; Abstract: 17; 18; SetMem32 function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 DEFAULT REL 25 SECTION .text 26 27;------------------------------------------------------------------------------ 28; VOID * 29; InternalMemSetMem32 ( 30; IN VOID *Buffer, 31; IN UINTN Count, 32; IN UINT8 Value 33; ) 34;------------------------------------------------------------------------------ 35global ASM_PFX(InternalMemSetMem32) 36ASM_PFX(InternalMemSetMem32): 37 push rdi 38 mov rdi, rcx 39 mov r9, rdi 40 xor rcx, rcx 41 sub rcx, rdi 42 and rcx, 15 43 mov rax, r8 44 jz .0 45 shr rcx, 2 46 cmp rcx, rdx 47 cmova rcx, rdx 48 sub rdx, rcx 49 rep stosd 50.0: 51 mov rcx, rdx 52 and edx, 3 53 shr rcx, 2 54 jz @SetDwords 55 movd xmm0, eax 56 pshufd xmm0, xmm0, 0 57.1: 58 movntdq [rdi], xmm0 59 add rdi, 16 60 loop .1 61 mfence 62@SetDwords: 63 mov ecx, edx 64 rep stosd 65 mov rax, r9 66 pop rdi 67 ret 68 69