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; SetMem.asm 15; 16; Abstract: 17; 18; SetMem function 19; 20; Notes: 21; 22;------------------------------------------------------------------------------ 23 24 .686 25 .model flat,C 26 .mmx 27 .code 28 29;------------------------------------------------------------------------------ 30; VOID * 31; EFIAPI 32; InternalMemSetMem ( 33; IN VOID *Buffer, 34; IN UINTN Count, 35; IN UINT8 Value 36; ) 37;------------------------------------------------------------------------------ 38InternalMemSetMem PROC USES edi 39 mov al, [esp + 16] 40 mov ah, al 41 shrd edx, eax, 16 42 shld eax, edx, 16 43 mov ecx, [esp + 12] ; ecx <- Count 44 mov edi, [esp + 8] ; edi <- Buffer 45 mov edx, ecx 46 and edx, 7 47 shr ecx, 3 ; # of Qwords to set 48 jz @SetBytes 49 add esp, -10h 50 movq [esp], mm0 ; save mm0 51 movq [esp + 8], mm1 ; save mm1 52 movd mm0, eax 53 movd mm1, eax 54 psllq mm0, 32 55 por mm0, mm1 ; fill mm0 with 8 Value's 56@@: 57 movq [edi], mm0 58 add edi, 8 59 loop @B 60 movq mm0, [esp] ; restore mm0 61 movq mm1, [esp + 8] ; restore mm1 62 add esp, 10h ; stack cleanup 63@SetBytes: 64 mov ecx, edx 65 rep stosb 66 mov eax, [esp + 8] ; eax <- Buffer as return value 67 ret 68InternalMemSetMem ENDP 69 70 END 71