diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/EfiCopyMem.c')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/EfiCopyMem.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/EfiCopyMem.c b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/EfiCopyMem.c new file mode 100644 index 0000000000..56c1dbd3b2 --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/EfiCopyMem.c @@ -0,0 +1,69 @@ +/*++
+
+Copyright (c) 2004, Intel Corporation
+All rights reserved. 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.
+
+Module Name:
+
+ EfiCopyMem.c
+
+Abstract:
+
+ Implementation of the EfiCopyMem routine. This function is broken
+ out into its own source file so that it can be excluded from a
+ build for a particular platform easily if an optimized version
+ is desired.
+
+--*/
+
+#include "Tiano.h"
+
+VOID
+EfiCommonLibCopyMem (
+ IN VOID *Destination,
+ IN VOID *Source,
+ IN UINTN Length
+ )
+/*++
+
+Routine Description:
+
+ Copy Length bytes from Source to Destination.
+
+Arguments:
+
+ Destination - Target of copy
+
+ Source - Place to copy from
+
+ Length - Number of bytes to copy
+
+Returns:
+
+ None
+
+--*/
+{
+ CHAR8 *Destination8;
+ CHAR8 *Source8;
+
+ if (Source < Destination) {
+ Destination8 = (CHAR8 *) Destination + Length - 1;
+ Source8 = (CHAR8 *) Source + Length - 1;
+ while (Length--) {
+ *(Destination8--) = *(Source8--);
+ }
+ } else {
+ Destination8 = (CHAR8 *) Destination;
+ Source8 = (CHAR8 *) Source;
+ while (Length--) {
+ *(Destination8++) = *(Source8++);
+ }
+ }
+}
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