build for a particular platform easily if an optimized version\r
is desired.\r
\r
- Copyright (c) 2006, Intel Corporation<BR>\r
- All rights reserved. This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2012 - 2013, ARM Ltd. All rights reserved.<BR>\r
+ Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>\r
\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
- Module Name: SetMem.c\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
-//\r
-// Include common header file for this module.\r
-//\r
-#include "CommonHeader.h"\r
+\r
+\r
\r
#include "MemLibInternals.h"\r
\r
/**\r
Set Buffer to Value for Size bytes.\r
\r
- @param Buffer Memory to set.\r
- @param Size Number of bytes to set\r
- @param Value Value of the set operation.\r
+ @param Buffer The memory to set.\r
+ @param Length The number of bytes to set.\r
+ @param Value The value of the set operation.\r
\r
@return Buffer\r
\r
VOID *\r
EFIAPI\r
InternalMemSetMem (\r
- IN VOID *Buffer,\r
- IN UINTN Size,\r
+ OUT VOID *Buffer,\r
+ IN UINTN Length,\r
IN UINT8 Value\r
)\r
{\r
// volatile to prevent the optimizer from replacing this function with\r
// the intrinsic memset()\r
//\r
- volatile UINT8 *Pointer;\r
+ volatile UINT8 *Pointer8;\r
+ volatile UINT32 *Pointer32;\r
+ volatile UINT64 *Pointer64;\r
+ UINT32 Value32;\r
+ UINT64 Value64;\r
+\r
+ if ((((UINTN)Buffer & 0x7) == 0) && (Length >= 8)) {\r
+ // Generate the 64bit value\r
+ Value32 = (Value << 24) | (Value << 16) | (Value << 8) | Value;\r
+ Value64 = LShiftU64 (Value32, 32) | Value32;\r
\r
- Pointer = (UINT8*)Buffer;\r
- while (Size-- != 0) {\r
- *(Pointer++) = Value;\r
+ Pointer64 = (UINT64*)Buffer;\r
+ while (Length >= 8) {\r
+ *(Pointer64++) = Value64;\r
+ Length -= 8;\r
+ }\r
+\r
+ // Finish with bytes if needed\r
+ Pointer8 = (UINT8*)Pointer64;\r
+ } else if ((((UINTN)Buffer & 0x3) == 0) && (Length >= 4)) {\r
+ // Generate the 32bit value\r
+ Value32 = (Value << 24) | (Value << 16) | (Value << 8) | Value;\r
+\r
+ Pointer32 = (UINT32*)Buffer;\r
+ while (Length >= 4) {\r
+ *(Pointer32++) = Value32;\r
+ Length -= 4;\r
+ }\r
+\r
+ // Finish with bytes if needed\r
+ Pointer8 = (UINT8*)Pointer32;\r
+ } else {\r
+ Pointer8 = (UINT8*)Buffer;\r
+ }\r
+ while (Length-- > 0) {\r
+ *(Pointer8++) = Value;\r
}\r
return Buffer;\r
}\r