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Add comments for clarification about memset implementation.

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Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Long, Qin <qin.long@intel.com>
Reviewed-by: Ye, Ting <ting.ye@intel.com>
Reviewed-by: Fu, Siyuan <siyuan.fu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15662 6f19259b-4bc3-4df7-8a09-765794883524
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Long, Qin 2014-07-16 02:48:20 +00:00 committed by qlong
parent f53da37ad0
commit 1b98d6ce44
1 changed files with 8 additions and 1 deletions
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9
CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c
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@ -2,7 +2,7 @@
Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
Cryptographic Library. Cryptographic Library.
Copyright (c) 2010, Intel Corporation. All rights reserved.<BR> Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 which accompanies this distribution. The full text of the license may be found at
@ -23,6 +23,13 @@ int _fltused = 1;
/* Sets buffers to a specified character */ /* Sets buffers to a specified character */
void * memset (void *dest, char ch, unsigned int count) void * memset (void *dest, char ch, unsigned int count)
{ {
//
// NOTE: Here we use one base implementation for memset, instead of the direct
// optimized SetMem() wrapper. Because the IntrinsicLib has to be built
// without whole program optimization option, and there will be some
// potential register usage errors when calling other optimized codes.
//
// //
// Declare the local variables that actually move the data elements as // Declare the local variables that actually move the data elements as
// volatile to prevent the optimizer from replacing this function with // volatile to prevent the optimizer from replacing this function with