1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2007, 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; memset function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 .code 25 26;------------------------------------------------------------------------------ 27; VOID * 28; memset ( 29; OUT VOID *Buffer, 30; IN UINT8 Value, 31; IN UINTN Count 32; ) 33;------------------------------------------------------------------------------ 34memset PROC USES rdi 35 cmp r8, 0 ; if Size == 0, do nothing 36 mov r9, rcx 37 je @SetDone 38 mov al, dl 39 mov ah, al 40 shrd edx, eax, 16 41 shld eax, edx, 16 42 mov rdi, rcx 43 mov rcx, r8 44 shr rcx, 2 45 rep stosd 46 mov rcx, r8 47 and rcx, 3 48 rep stosb 49@SetDone: 50 mov rax, r9 51 ret 52memset ENDP 53 54 END 55 56