98d8f194e5
When use clang-3.8 to build the NetworkPkg, compiler optimization may use memcpy for memory copy. For example: CryptoPkg/Library/OpensslLib/openssl/ssl/ssl_rsa.c:918: undefined reference to `memcpy'` Compiler optimization is sophisticated, but we can work around it use __attribute__((__used__)) to informs the compiler that symbol should be retained in the object file, even if it may be unreferenced. Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Dandan Bi <dandan.bi@intel.com> Signed-off-by: Xiaoyu Lu <xiaoyux.lu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
31 lines
798 B
C
31 lines
798 B
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, 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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#if defined(__clang__) && !defined(__APPLE__)
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/* Copies bytes between buffers */
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static __attribute__((__used__))
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void * __memcpy (void *dest, const void *src, unsigned int count)
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{
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return CopyMem (dest, src, (UINTN)count);
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}
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__attribute__((__alias__("__memcpy")))
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void * memcpy (void *dest, const void *src, unsigned int count);
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#else
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/* Copies bytes between buffers */
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void * memcpy (void *dest, const void *src, unsigned int count)
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{
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return CopyMem (dest, src, (UINTN)count);
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}
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#endif
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