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| author | lhauch <lhauch@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-01 14:49:55 +0000 |
|---|---|---|
| committer | lhauch <lhauch@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-01 14:49:55 +0000 |
| commit | 586cd1f1f4129ab7ec24543d4968801e17cc870b (patch) | |
| tree | e2f1b645e576edee627997ca1abd65e3f9b0add8 /OldMdePkg/Library/BaseMemoryLib/CopyMem.c | |
| parent | 144d783d40c8a02113350feabd1b9a55b692313f (diff) | |
| download | edk2-586cd1f1f4129ab7ec24543d4968801e17cc870b.tar.gz edk2-586cd1f1f4129ab7ec24543d4968801e17cc870b.tar.bz2 edk2-586cd1f1f4129ab7ec24543d4968801e17cc870b.zip | |
Moved the MdePkg to OldMdePkg so that new code in MdePkg does not break existing builds. Also updated the SPD and FPD files UiNames
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2616 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OldMdePkg/Library/BaseMemoryLib/CopyMem.c')
| -rw-r--r-- | OldMdePkg/Library/BaseMemoryLib/CopyMem.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseMemoryLib/CopyMem.c b/OldMdePkg/Library/BaseMemoryLib/CopyMem.c new file mode 100644 index 0000000000..632061a668 --- /dev/null +++ b/OldMdePkg/Library/BaseMemoryLib/CopyMem.c @@ -0,0 +1,62 @@ +/** @file
+ 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.
+
+ Copyright (c) 2006, Intel Corporation<BR>
+ 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
+
+**/
+
+#include "MemLibInternals.h"
+
+/**
+ Copy Length bytes from Source to Destination.
+
+ @param Destination Target of copy
+ @param Source Place to copy from
+ @param Length Number of bytes to copy
+
+ @return Destination
+
+**/
+VOID *
+EFIAPI
+InternalMemCopyMem (
+ OUT VOID *Destination,
+ IN CONST VOID *Source,
+ IN UINTN Length
+ )
+{
+ //
+ // Declare the local variables that actually move the data elements as
+ // volatile to prevent the optimizer from replacing this function with
+ // the intrinsic memcpy()
+ //
+ volatile UINT8 *Destination8;
+ CONST UINT8 *Source8;
+
+ if (Source > Destination) {
+ Destination8 = (UINT8*)Destination;
+ Source8 = (CONST UINT8*)Source;
+ while (Length-- != 0) {
+ *(Destination8++) = *(Source8++);
+ }
+ } else if (Source < Destination) {
+ Destination8 = (UINT8*)Destination + Length;
+ Source8 = (CONST UINT8*)Source + Length;
+ while (Length-- != 0) {
+ *(--Destination8) = *(--Source8);
+ }
+ }
+ return Destination;
+}
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