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| author | Guo Mang <mang.guo@intel.com> | 2017-04-27 11:08:17 +0800 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2017-04-27 11:08:17 +0800 |
| commit | b0724f89e3b05de1d6492e79ec89f6d467cb14f0 (patch) | |
| tree | e4a9eff6dc255621c2f0a08d61d32bf95087a7a9 /Core/MdePkg/Library/PeiMemoryLib/CopyMemWrapper.c | |
| parent | c23f114d3cfbb29b8734b87213d1ec0de404197b (diff) | |
| download | edk2-platforms-b0724f89e3b05de1d6492e79ec89f6d467cb14f0.tar.xz | |
MdePkg: Move to new location
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Core/MdePkg/Library/PeiMemoryLib/CopyMemWrapper.c')
| -rw-r--r-- | Core/MdePkg/Library/PeiMemoryLib/CopyMemWrapper.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/PeiMemoryLib/CopyMemWrapper.c b/Core/MdePkg/Library/PeiMemoryLib/CopyMemWrapper.c new file mode 100644 index 0000000000..9b76f0f1e1 --- /dev/null +++ b/Core/MdePkg/Library/PeiMemoryLib/CopyMemWrapper.c @@ -0,0 +1,63 @@ +/** @file
+ CopyMem() implementation.
+
+ The following BaseMemoryLib instances contain the same copy of this file:
+
+ BaseMemoryLib
+ BaseMemoryLibMmx
+ BaseMemoryLibSse2
+ BaseMemoryLibRepStr
+ BaseMemoryLibOptDxe
+ BaseMemoryLibOptPei
+ PeiMemoryLib
+ UefiMemoryLib
+
+ Copyright (c) 2006 - 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 "MemLibInternals.h"
+
+/**
+ Copies a source buffer to a destination buffer, and returns the destination buffer.
+
+ This function copies Length bytes from SourceBuffer to DestinationBuffer, and returns
+ DestinationBuffer. The implementation must be reentrant, and it must handle the case
+ where SourceBuffer overlaps DestinationBuffer.
+
+ If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().
+ If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
+
+ @param DestinationBuffer The pointer to the destination buffer of the memory copy.
+ @param SourceBuffer The pointer to the source buffer of the memory copy.
+ @param Length The number of bytes to copy from SourceBuffer to DestinationBuffer.
+
+ @return DestinationBuffer.
+
+**/
+VOID *
+EFIAPI
+CopyMem (
+ OUT VOID *DestinationBuffer,
+ IN CONST VOID *SourceBuffer,
+ IN UINTN Length
+ )
+{
+ if (Length == 0) {
+ return DestinationBuffer;
+ }
+ ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)DestinationBuffer));
+ ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)SourceBuffer));
+
+ if (DestinationBuffer == SourceBuffer) {
+ return DestinationBuffer;
+ }
+ return InternalMemCopyMem (DestinationBuffer, SourceBuffer, Length);
+}
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