1 #------------------------------------------------------------------------------
3 # Copyright (c) 2006, Intel Corporation
4 # All rights reserved. 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 #------------------------------------------------------------------------------
24 .globl ASM_PFX(InternalMemCopyMem)
26 #------------------------------------------------------------------------------
29 # InternalMemCopyMem (
30 # IN VOID *Destination,
34 #------------------------------------------------------------------------------
35 ASM_PFX(InternalMemCopyMem):
38 movl 16(%esp), %esi # esi <- Source
39 movl 12(%esp), %edi # edi <- Destination
40 movl 20(%esp), %edx # edx <- Count
45 leal -1(%esi, %edx), %eax # eax <- End of Source
49 jb L_CopyBytes # Copy backward if overlapped
50 movl %eax, %esi # esi <- End of Source
51 leal -1(%edi, %edx), %edi # edi <- End of Destination
56 movsb # Copy bytes backward
59 movl 12(%esp), %eax # eax <- Destination as return value