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/* $OpenBSD: crypto_namespace.h,v 1.2 2023/02/16 08:38:17 tb Exp $ */
/*
* Copyright (c) 2016 Philip Guenther <guenther@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _LIBCRYPTO_CRYPTO_NAMESPACE_H_
#define _LIBCRYPTO_CRYPTO_NAMESPACE_H_
/*
* If marked as 'used', then internal calls use the name with prefix "_lcry_"
* and we alias that to the normal name *and* the name with prefix "_libre_";
* external calls use the latter name.
*/
#ifdef _MSC_VER
# define LCRYPTO_UNUSED(x)
# define LCRYPTO_USED(x)
# define LCRYPTO_ALIAS1(pre, x)
# define LCRYPTO_ALIAS(x)
#else
#ifdef LIBRESSL_NAMESPACE
# define LCRYPTO_UNUSED(x) typeof(x) x __attribute__((deprecated))
#ifdef LIBRESSL_CRYPTO_NAMESPACE
# define LCRYPTO_USED(x) __attribute__((visibility("hidden"))) \
typeof(x) x asm("_lcry_"#x)
# define LCRYPTO_ALIAS1(pre,x) asm(".global "#pre#x"; "#pre#x" = _lcry_"#x)
# define LCRYPTO_ALIAS(x) LCRYPTO_ALIAS1(,x); LCRYPTO_ALIAS1(_libre_,x)
#else
# define LCRYPTO_USED(x) typeof(x) x asm("_libre_"#x)
#endif
#else
# define LCRYPTO_UNUSED(x)
# define LCRYPTO_USED(x)
# define LCRYPTO_ALIAS1(pre,x)
# define LCRYPTO_ALIAS(x) asm("")
#endif
#endif /* _MSC_VER */
#endif /* _LIBCRYPTO_CRYPTO_NAMESPACE_H_ */
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