+++ /dev/null
-#------------------------------------------------------------------------------\r
-#\r
-# Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-#\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-# Module Name:\r
-#\r
-# CopyMem.Asm\r
-#\r
-# Abstract:\r
-#\r
-# CopyMem function\r
-#\r
-# Notes:\r
-#\r
-#------------------------------------------------------------------------------\r
-#include <EdkIIGlueBase.h>\r
-.globl ASM_PFX(InternalMemCopyMem)\r
-\r
-#------------------------------------------------------------------------------\r
-# VOID *\r
-# EFIAPI\r
-# InternalMemCopyMem (\r
-# IN VOID *Destination,\r
-# IN VOID *Source,\r
-# IN UINTN Count\r
-# );\r
-#------------------------------------------------------------------------------\r
-ASM_PFX(InternalMemCopyMem):\r
- push %esi\r
- push %edi\r
- movl 16(%esp), %esi # esi <- Source\r
- movl 12(%esp), %edi # edi <- Destination\r
- movl 20(%esp), %edx # edx <- Count\r
- leal -1(%esi, %edx), %eax # eax <- End of Source\r
- cmpl %edi, %esi\r
- jae L0\r
- cmpl %edi, %eax\r
- jae L_CopyBackward # Copy backward if overlapped\r
-L0:\r
- movl %edx, %ecx\r
- andl $3, %edx\r
- shrl $2, %ecx\r
- rep\r
- movsl # Copy as many Dwords as possible\r
- jmp L_CopyBytes\r
-L_CopyBackward:\r
- movl %eax, %esi # esi <- End of Source\r
- leal -1(%edi, %edx), %edi # edi <- End of Destination\r
- std\r
-L_CopyBytes:\r
- movl %edx, %ecx\r
- rep\r
- movsb # Copy bytes backward\r
- cld\r
- movl 12(%esp), %eax # eax <- Destination as return value\r
- pop %edi\r
- pop %esi\r
- ret\r