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| author | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-04-21 22:04:35 +0000 |
|---|---|---|
| committer | andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-04-21 22:04:35 +0000 |
| commit | d39eb83cc5ce2147264e2ea3566c4dbf7eb9888d (patch) | |
| tree | b606874083dc56330d7b1650599d620f39f0b1df /ArmPkg/Library/BaseMemoryLibVstm/SetMem.c | |
| parent | d02b28d736c19b9a59690008e56c63e839fcf28f (diff) | |
| download | edk2-platforms-d39eb83cc5ce2147264e2ea3566c4dbf7eb9888d.tar.xz | |
Add some ldm/vldm optimized CopyMem routines. Add performance macros to BDS
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10388 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Library/BaseMemoryLibVstm/SetMem.c')
| -rwxr-xr-x | ArmPkg/Library/BaseMemoryLibVstm/SetMem.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/ArmPkg/Library/BaseMemoryLibVstm/SetMem.c b/ArmPkg/Library/BaseMemoryLibVstm/SetMem.c new file mode 100755 index 0000000000..2394f4878b --- /dev/null +++ b/ArmPkg/Library/BaseMemoryLibVstm/SetMem.c @@ -0,0 +1,53 @@ +/** @file
+ Implementation of the EfiSetMem 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 - 2010, 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.
+
+**/
+
+
+
+
+#include "MemLibInternals.h"
+
+/**
+ Set Buffer to Value for Size bytes.
+
+ @param Buffer Memory to set.
+ @param Length Number of bytes to set
+ @param Value Value of the set operation.
+
+ @return Buffer
+
+**/
+VOID *
+EFIAPI
+InternalMemSetMem (
+ OUT VOID *Buffer,
+ IN UINTN Length,
+ IN UINT8 Value
+ )
+{
+ //
+ // Declare the local variables that actually move the data elements as
+ // volatile to prevent the optimizer from replacing this function with
+ // the intrinsic memset()
+ //
+ volatile UINT8 *Pointer;
+
+ Pointer = (UINT8*)Buffer;
+ while (Length-- > 0) {
+ *(Pointer++) = Value;
+ }
+ return Buffer;
+}
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