1 ;------------------------------------------------------------------------------
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.
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.
22 ;------------------------------------------------------------------------------
26 ;------------------------------------------------------------------------------
28 ; InternalMemCopyMem (
29 ; IN VOID *Destination,
33 ;------------------------------------------------------------------------------
34 global ASM_PFX(InternalMemCopyMem)
35 ASM_PFX(InternalMemCopyMem):
38 mov esi, [esp + 16] ; esi <- Source
39 mov edi, [esp + 12] ; edi <- Destination
40 mov edx, [esp + 20] ; edx <- Count
41 lea eax, [esi + edx - 1] ; eax <- End of Source
45 jae @CopyBackward ; Copy backward if overlapped
50 rep movsd ; Copy as many Dwords as possible
53 mov esi, eax ; esi <- End of Source
54 lea edi, [edi + edx - 1] ; edi <- End of Destination
58 rep movsb ; Copy bytes backward
60 mov eax, [esp + 12] ; eax <- Destination as return value