mirror of https://github.com/acidanthera/audk.git
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/** @file
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Provide intrinsics within Oniguruma
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(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License that accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
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WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Library/BaseMemoryLib.h>
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//
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// From CryptoPkg/IntrinsicLib
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//
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/* Copies bytes between buffers */
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#pragma function(memcpy)
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void * memcpy (void *dest, const void *src, unsigned int count)
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{
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return CopyMem (dest, src, (UINTN)count);
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}
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/* Sets buffers to a specified character */
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#pragma function(memset)
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void * memset (void *dest, char ch, unsigned int count)
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{
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//
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// NOTE: Here we use one base implementation for memset, instead of the direct
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// optimized SetMem() wrapper. Because the IntrinsicLib has to be built
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// without whole program optimization option, and there will be some
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// potential register usage errors when calling other optimized codes.
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//
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//
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// Declare the local variables that actually move the data elements as
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// volatile to prevent the optimizer from replacing this function with
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// the intrinsic memset()
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//
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volatile UINT8 *Pointer;
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Pointer = (UINT8 *)dest;
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while (count-- != 0) {
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*(Pointer++) = ch;
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}
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return dest;
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}
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