1 /** @file
2 Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
3 Cryptographic Library.
4
5 Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
6 SPDX-License-Identifier: BSD-2-Clause-Patent
7
8 **/
9
10 #include <Base.h>
11 #include <Library/BaseMemoryLib.h>
12 #include <Library/BaseLib.h>
13
14 typedef UINTN size_t;
15
16 /* OpenSSL will use floating point support, and C compiler produces the _fltused
17 symbol by default. Simply define this symbol here to satisfy the linker. */
18 int _fltused = 1;
19
20 /* Sets buffers to a specified character */
memset(void * dest,int ch,size_t count)21 void * memset (void *dest, int ch, size_t count)
22 {
23 //
24 // NOTE: Here we use one base implementation for memset, instead of the direct
25 // optimized SetMem() wrapper. Because the IntrinsicLib has to be built
26 // without whole program optimization option, and there will be some
27 // potential register usage errors when calling other optimized codes.
28 //
29
30 //
31 // Declare the local variables that actually move the data elements as
32 // volatile to prevent the optimizer from replacing this function with
33 // the intrinsic memset()
34 //
35 volatile UINT8 *Pointer;
36
37 Pointer = (UINT8 *)dest;
38 while (count-- != 0) {
39 *(Pointer++) = (UINT8)ch;
40 }
41
42 return dest;
43 }
44
45 /* Compare bytes in two buffers. */
memcmp(const void * buf1,const void * buf2,size_t count)46 int memcmp (const void *buf1, const void *buf2, size_t count)
47 {
48 return (int)CompareMem(buf1, buf2, count);
49 }
50
strcmp(const char * s1,const char * s2)51 int strcmp (const char *s1, const char *s2)
52 {
53 return (int)AsciiStrCmp(s1, s2);
54 }
55