50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/** @file
|
|
Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
|
|
Cryptographic Library.
|
|
|
|
Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
|
|
This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
**/
|
|
|
|
#include <Base.h>
|
|
#include <Library/BaseMemoryLib.h>
|
|
|
|
/* Copies bytes between buffers */
|
|
void * memcpy (void *DestinationBuffer, const void *SourceBuffer, UINTN Length)
|
|
{
|
|
volatile UINT8 *Destination8;
|
|
CONST UINT8 *Source8;
|
|
|
|
if (Length == 0) {
|
|
return DestinationBuffer;
|
|
}
|
|
|
|
if (DestinationBuffer == SourceBuffer) {
|
|
return DestinationBuffer;
|
|
}
|
|
|
|
if (SourceBuffer > DestinationBuffer) {
|
|
Destination8 = (UINT8*)DestinationBuffer;
|
|
Source8 = (CONST UINT8*)SourceBuffer;
|
|
while (Length-- != 0) {
|
|
*(Destination8++) = *(Source8++);
|
|
}
|
|
} else if (SourceBuffer < DestinationBuffer) {
|
|
Destination8 = (UINT8*)DestinationBuffer + Length;
|
|
Source8 = (CONST UINT8*)SourceBuffer + Length;
|
|
while (Length-- != 0) {
|
|
*(--Destination8) = *(--Source8);
|
|
}
|
|
}
|
|
|
|
return DestinationBuffer;
|
|
}
|
|
|