1 /** @file
2 Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
3 Cryptographic Library.
4
5 Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
10
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14 **/
15
16 #include <Base.h>
17 #include <Library/BaseMemoryLib.h>
18
19 /* OpenSSL will use floating point support, and C compiler produces the _fltused
20 symbol by default. Simply define this symbol here to satisfy the linker. */
21 int _fltused = 1;
22
23 /* Sets buffers to a specified character */
memset(void * dest,char ch,unsigned int count)24 void * memset (void *dest, char ch, unsigned int count)
25 {
26 //
27 // NOTE: Here we use one base implementation for memset, instead of the direct
28 // optimized SetMem() wrapper. Because the IntrinsicLib has to be built
29 // without whole program optimization option, and there will be some
30 // potential register usage errors when calling other optimized codes.
31 //
32
33 //
34 // Declare the local variables that actually move the data elements as
35 // volatile to prevent the optimizer from replacing this function with
36 // the intrinsic memset()
37 //
38 volatile UINT8 *Pointer;
39
40 Pointer = (UINT8 *)dest;
41 while (count-- != 0) {
42 *(Pointer++) = ch;
43 }
44
45 return dest;
46 }
47