1 /** @file 2 3 Provide intrinsics within Oniguruma 4 5 (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR> 6 7 This program and the accompanying materials are licensed and made available 8 under the terms and conditions of the BSD License that accompanies this 9 distribution. The full text of the license may be found at 10 http://opensource.org/licenses/bsd-license.php. 11 12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT 13 WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 14 **/ 15 16 #include <Library/BaseMemoryLib.h> 17 18 // 19 // From CryptoPkg/IntrinsicLib 20 // 21 22 /* Copies bytes between buffers */ 23 #pragma function(memcpy) 24 void * memcpy (void *dest, const void *src, unsigned int count) 25 { 26 return CopyMem (dest, src, (UINTN)count); 27 } 28 29 /* Sets buffers to a specified character */ 30 #pragma function(memset) 31 void * memset (void *dest, char ch, unsigned int count) 32 { 33 // 34 // NOTE: Here we use one base implementation for memset, instead of the direct 35 // optimized SetMem() wrapper. Because the IntrinsicLib has to be built 36 // without whole program optimization option, and there will be some 37 // potential register usage errors when calling other optimized codes. 38 // 39 40 // 41 // Declare the local variables that actually move the data elements as 42 // volatile to prevent the optimizer from replacing this function with 43 // the intrinsic memset() 44 // 45 volatile UINT8 *Pointer; 46 47 Pointer = (UINT8 *)dest; 48 while (count-- != 0) { 49 *(Pointer++) = ch; 50 } 51 52 return dest; 53 } 54
