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- /*
- * Distributed under the Boost Software License, Version 1.0.
- * (See accompanying file LICENSE_1_0.txt or copy at
- * http://www.boost.org/LICENSE_1_0.txt)
- *
- * Copyright (c) 2017 Andrey Semashev
- */
- /*!
- * \file atomic/detail/hwcaps_gcc_x86.hpp
- *
- * This header defines hardware capabilities macros for x86
- */
- #ifndef BOOST_ATOMIC_DETAIL_HWCAPS_GCC_X86_HPP_INCLUDED_
- #define BOOST_ATOMIC_DETAIL_HWCAPS_GCC_X86_HPP_INCLUDED_
- #include <boost/atomic/detail/config.hpp>
- #ifdef BOOST_HAS_PRAGMA_ONCE
- #pragma once
- #endif
- #if defined(__GNUC__)
- #if defined(__i386__) &&\
- (\
- defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) ||\
- defined(__i586__) || defined(__i686__) || defined(__SSE__)\
- )
- #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
- #endif
- #if defined(__x86_64__) && defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
- #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
- #endif
- #if defined(__x86_64__) || defined(__SSE2__)
- // Use mfence only if SSE2 is available
- #define BOOST_ATOMIC_DETAIL_X86_HAS_MFENCE 1
- #endif
- #else // defined(__GNUC__)
- #if defined(__i386__) && !defined(BOOST_ATOMIC_NO_CMPXCHG8B)
- #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG8B 1
- #endif
- #if defined(__x86_64__) && !defined(BOOST_ATOMIC_NO_CMPXCHG16B)
- #define BOOST_ATOMIC_DETAIL_X86_HAS_CMPXCHG16B 1
- #endif
- #if !defined(BOOST_ATOMIC_NO_MFENCE)
- #define BOOST_ATOMIC_DETAIL_X86_HAS_MFENCE 1
- #endif
- #endif // defined(__GNUC__)
- #endif // BOOST_ATOMIC_DETAIL_HWCAPS_GCC_X86_HPP_INCLUDED_
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