2 Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
5 Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
6 SPDX-License-Identifier: BSD-2-Clause-Patent
11 #include <Library/BaseMemoryLib.h>
12 #include <Library/BaseLib.h>
16 #if defined (__GNUC__) || defined (__clang__)
17 #define GLOBAL_USED __attribute__((used))
22 /* OpenSSL will use floating point support, and C compiler produces the _fltused
23 symbol by default. Simply define this symbol here to satisfy the linker. */
24 int GLOBAL_USED _fltused
= 1;
26 /* Sets buffers to a specified character */
35 // NOTE: Here we use one base implementation for memset, instead of the direct
36 // optimized SetMem() wrapper. Because the IntrinsicLib has to be built
37 // without whole program optimization option, and there will be some
38 // potential register usage errors when calling other optimized codes.
42 // Declare the local variables that actually move the data elements as
43 // volatile to prevent the optimizer from replacing this function with
44 // the intrinsic memset()
46 volatile UINT8
*Pointer
;
48 Pointer
= (UINT8
*)dest
;
49 while (count
-- != 0) {
50 *(Pointer
++) = (UINT8
)ch
;
56 /* Compare bytes in two buffers. */
64 return (int)CompareMem (buf1
, buf2
, count
);
73 return (int)AsciiStrCmp (s1
, s2
);