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.asm 15 ; 16 ; Abstract: 17 ; 18 ; SetMem32 function 19 ; 20 ; Notes: 21 ; 22 ;------------------------------------------------------------------------------ 23 24 .686 25 .model flat,C 26 .mmx 27 .code 28 29 ;------------------------------------------------------------------------------ 30 ; VOID * 31 ; EFIAPI 32 ; InternalMemSetMem32 ( 33 ; IN VOID *Buffer, 34 ; IN UINTN Count, 35 ; IN UINT32 Value 36 ; ); 37 ;------------------------------------------------------------------------------ 38 InternalMemSetMem32 PROC 39 mov eax, [esp + 4] ; eax <- Buffer as return value 40 mov ecx, [esp + 8] ; ecx <- Count 41 movd mm0, dword ptr [esp + 12] ; mm0 <- Value 42 shr ecx, 1 ; ecx <- number of qwords to set 43 mov edx, eax ; edx <- Buffer 44 jz @SetDwords 45 movq mm1, mm0 46 psllq mm1, 32 47 por mm0, mm1 48 @@: 49 movq qword ptr [edx], mm0 50 lea edx, [edx + 8] ; use "lea" to avoid change in flags 51 loop @B 52 @SetDwords: 53 jnc @F 54 movd dword ptr [edx], mm0 55 @@: 56 ret 57 InternalMemSetMem32 ENDP 58 59 END 60
