933681b208
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1603 With this change, global variable _fltused will not be removed by LTO Signed-off-by: Liming Gao <liming.gao@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com> Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/** @file
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Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
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Cryptographic Library.
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Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/BaseLib.h>
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typedef UINTN size_t;
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#if defined(__GNUC__) || defined(__clang__)
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#define GLOBAL_USED __attribute__((used))
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#else
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#define GLOBAL_USED
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#endif
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/* OpenSSL will use floating point support, and C compiler produces the _fltused
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symbol by default. Simply define this symbol here to satisfy the linker. */
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int GLOBAL_USED _fltused = 1;
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/* Sets buffers to a specified character */
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void * memset (void *dest, int ch, size_t 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++) = (UINT8)ch;
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}
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return dest;
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}
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/* Compare bytes in two buffers. */
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int memcmp (const void *buf1, const void *buf2, size_t count)
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{
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return (int)CompareMem(buf1, buf2, count);
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}
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int strcmp (const char *s1, const char *s2)
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{
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return (int)AsciiStrCmp(s1, s2);
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}
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