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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) 2020 Andrey Semashev
- */
- /*!
- * \file atomic/detail/fence_arch_ops_gcc_ppc.hpp
- *
- * This header contains implementation of the \c fence_arch_operations struct.
- */
- #ifndef BOOST_ATOMIC_DETAIL_FENCE_ARCH_OPS_GCC_PPC_HPP_INCLUDED_
- #define BOOST_ATOMIC_DETAIL_FENCE_ARCH_OPS_GCC_PPC_HPP_INCLUDED_
- #include <boost/memory_order.hpp>
- #include <boost/atomic/detail/config.hpp>
- #include <boost/atomic/detail/header.hpp>
- #ifdef BOOST_HAS_PRAGMA_ONCE
- #pragma once
- #endif
- namespace boost {
- namespace atomics {
- namespace detail {
- //! Fence operations for PowerPC
- struct fence_arch_operations_gcc_ppc
- {
- static BOOST_FORCEINLINE void thread_fence(memory_order order) BOOST_NOEXCEPT
- {
- if (order != memory_order_relaxed)
- {
- #if defined(__powerpc64__) || defined(__PPC64__)
- if (order != memory_order_seq_cst)
- __asm__ __volatile__ ("lwsync" ::: "memory");
- else
- __asm__ __volatile__ ("sync" ::: "memory");
- #else
- __asm__ __volatile__ ("sync" ::: "memory");
- #endif
- }
- }
- static BOOST_FORCEINLINE void signal_fence(memory_order order) BOOST_NOEXCEPT
- {
- if (order != memory_order_relaxed)
- {
- #if defined(__ibmxl__) || defined(__IBMCPP__)
- __fence();
- #else
- __asm__ __volatile__ ("" ::: "memory");
- #endif
- }
- }
- };
- typedef fence_arch_operations_gcc_ppc fence_arch_operations;
- } // namespace detail
- } // namespace atomics
- } // namespace boost
- #include <boost/atomic/detail/footer.hpp>
- #endif // BOOST_ATOMIC_DETAIL_FENCE_ARCH_OPS_GCC_PPC_HPP_INCLUDED_
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