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; ZeroMem.nasm 15; 16; Abstract: 17; 18; ZeroMem function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 SECTION .text 25 26;------------------------------------------------------------------------------ 27; VOID * 28; InternalMemZeroMem ( 29; IN VOID *Buffer, 30; IN UINTN Count 31; ); 32;------------------------------------------------------------------------------ 33global ASM_PFX(InternalMemZeroMem) 34ASM_PFX(InternalMemZeroMem): 35 push edi 36 mov edi, [esp + 8] 37 mov ecx, [esp + 12] 38 mov edx, ecx 39 shr ecx, 3 40 jz @ZeroBytes 41 pxor mm0, mm0 42.0: 43 movq [edi], mm0 44 add edi, 8 45 loop .0 46@ZeroBytes: 47 and edx, 7 48 xor eax, eax 49 mov ecx, edx 50 rep stosb 51 mov eax, [esp + 8] 52 pop edi 53 ret 54 55