Chris@102: /*
Chris@102:  * Distributed under the Boost Software License, Version 1.0.
Chris@102:  * (See accompanying file LICENSE_1_0.txt or copy at
Chris@102:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@102:  *
Chris@102:  * Copyright (c) 2009 Helge Bahmann
Chris@102:  * Copyright (c) 2012 Tim Blechmann
Chris@102:  * Copyright (c) 2014 Andrey Semashev
Chris@102:  */
Chris@102: /*!
Chris@102:  * \file   atomic/detail/ops_msvc_arm.hpp
Chris@102:  *
Chris@102:  * This header contains implementation of the \c operations template.
Chris@102:  */
Chris@102: 
Chris@102: #ifndef BOOST_ATOMIC_DETAIL_OPS_MSVC_ARM_HPP_INCLUDED_
Chris@102: #define BOOST_ATOMIC_DETAIL_OPS_MSVC_ARM_HPP_INCLUDED_
Chris@102: 
Chris@102: #include <intrin.h>
Chris@102: #include <boost/memory_order.hpp>
Chris@102: #include <boost/type_traits/make_signed.hpp>
Chris@102: #include <boost/atomic/detail/config.hpp>
Chris@102: #include <boost/atomic/detail/interlocked.hpp>
Chris@102: #include <boost/atomic/detail/storage_type.hpp>
Chris@102: #include <boost/atomic/detail/operations_fwd.hpp>
Chris@102: #include <boost/atomic/capabilities.hpp>
Chris@102: #include <boost/atomic/detail/ops_msvc_common.hpp>
Chris@102: 
Chris@102: #ifdef BOOST_HAS_PRAGMA_ONCE
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_LOAD8(p) __iso_volatile_load8((const volatile __int8*)(p))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_LOAD16(p) __iso_volatile_load16((const volatile __int16*)(p))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_LOAD32(p) __iso_volatile_load32((const volatile __int32*)(p))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_LOAD64(p) __iso_volatile_load64((const volatile __int64*)(p))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_STORE8(p, v) __iso_volatile_store8((volatile __int8*)(p), (__int8)(v))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_STORE16(p, v) __iso_volatile_store16((volatile __int16*)(p), (__int16)(v))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_STORE32(p, v) __iso_volatile_store32((volatile __int32*)(p), (__int32)(v))
Chris@102: #define BOOST_ATOMIC_DETAIL_ARM_STORE64(p, v) __iso_volatile_store64((volatile __int64*)(p), (__int64)(v))
Chris@102: 
Chris@102: namespace boost {
Chris@102: namespace atomics {
Chris@102: namespace detail {
Chris@102: 
Chris@102: // A note about memory_order_consume. Technically, this architecture allows to avoid
Chris@102: // unnecessary memory barrier after consume load since it supports data dependency ordering.
Chris@102: // However, some compiler optimizations may break a seemingly valid code relying on data
Chris@102: // dependency tracking by injecting bogus branches to aid out of order execution.
Chris@102: // This may happen not only in Boost.Atomic code but also in user's code, which we have no
Chris@102: // control of. See this thread: http://lists.boost.org/Archives/boost/2014/06/213890.php.
Chris@102: // For this reason we promote memory_order_consume to memory_order_acquire.
Chris@102: 
Chris@102: struct msvc_arm_operations_base
Chris@102: {
Chris@102:     static BOOST_FORCEINLINE void hardware_full_fence() BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         __dmb(0xB); // _ARM_BARRIER_ISH, see armintr.h from MSVC 11 and later
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void fence_before_store(memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102: 
Chris@102:         if ((order & memory_order_release) != 0)
Chris@102:             hardware_full_fence();
Chris@102: 
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void fence_after_store(memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102: 
Chris@102:         if (order == memory_order_seq_cst)
Chris@102:             hardware_full_fence();
Chris@102: 
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void fence_after_load(memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102: 
Chris@102:         if ((order & (memory_order_consume | memory_order_acquire)) != 0)
Chris@102:             hardware_full_fence();
Chris@102: 
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE BOOST_CONSTEXPR memory_order cas_common_order(memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         // Combine order flags together and promote memory_order_consume to memory_order_acquire
Chris@102:         return static_cast< memory_order >(((failure_order | success_order) & ~memory_order_consume) | (((failure_order | success_order) & memory_order_consume) << 1u));
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: template< typename T, typename Derived >
Chris@102: struct msvc_arm_operations :
Chris@102:     public msvc_arm_operations_base
Chris@102: {
Chris@102:     typedef T storage_type;
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_sub(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         typedef typename make_signed< storage_type >::type signed_storage_type;
Chris@102:         return Derived::fetch_add(storage, static_cast< storage_type >(-static_cast< signed_storage_type >(v)), order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool compare_exchange_weak(
Chris@102:         storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         return Derived::compare_exchange_strong(storage, expected, desired, success_order, failure_order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool test_and_set(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         return !!Derived::exchange(storage, (storage_type)1, order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void clear(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         Derived::store(storage, (storage_type)0, order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool is_lock_free(storage_type const volatile&) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         return true;
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: template< bool Signed >
Chris@102: struct operations< 1u, Signed > :
Chris@102:     public msvc_arm_operations< typename make_storage_type< 1u, Signed >::type, operations< 1u, Signed > >
Chris@102: {
Chris@102:     typedef msvc_arm_operations< typename make_storage_type< 1u, Signed >::type, operations< 1u, Signed > > base_type;
Chris@102:     typedef typename base_type::storage_type storage_type;
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         base_type::fence_before_store(order);
Chris@102:         BOOST_ATOMIC_DETAIL_ARM_STORE8(&storage, v);
Chris@102:         base_type::fence_after_store(order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type v = BOOST_ATOMIC_DETAIL_ARM_LOAD8(&storage);
Chris@102:         base_type::fence_after_load(order);
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD8(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE8_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE8(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool compare_exchange_strong(
Chris@102:         storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type previous = expected, old_val;
Chris@102: 
Chris@102:         switch (cas_common_order(success_order, failure_order))
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8_RELAXED(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8_ACQUIRE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8_RELEASE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE8(&storage, desired, previous));
Chris@102:             break;
Chris@102:         }
Chris@102:         expected = old_val;
Chris@102: 
Chris@102:         return (previous == old_val);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND8_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND8_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND8_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND8(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR8_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR8_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR8_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR8(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR8_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR8_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR8_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR8(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: template< bool Signed >
Chris@102: struct operations< 2u, Signed > :
Chris@102:     public msvc_arm_operations< typename make_storage_type< 2u, Signed >::type, operations< 2u, Signed > >
Chris@102: {
Chris@102:     typedef msvc_arm_operations< typename make_storage_type< 2u, Signed >::type, operations< 2u, Signed > > base_type;
Chris@102:     typedef typename base_type::storage_type storage_type;
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         base_type::fence_before_store(order);
Chris@102:         BOOST_ATOMIC_DETAIL_ARM_STORE16(&storage, v);
Chris@102:         base_type::fence_after_store(order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type v = BOOST_ATOMIC_DETAIL_ARM_LOAD16(&storage);
Chris@102:         base_type::fence_after_load(order);
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD16(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE16_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE16(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool compare_exchange_strong(
Chris@102:         storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type previous = expected, old_val;
Chris@102: 
Chris@102:         switch (cas_common_order(success_order, failure_order))
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16_RELAXED(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16_ACQUIRE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16_RELEASE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE16(&storage, desired, previous));
Chris@102:             break;
Chris@102:         }
Chris@102:         expected = old_val;
Chris@102: 
Chris@102:         return (previous == old_val);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND16_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND16_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND16_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND16(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR16_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR16_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR16_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR16(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR16_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR16_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR16_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR16(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: template< bool Signed >
Chris@102: struct operations< 4u, Signed > :
Chris@102:     public msvc_arm_operations< typename make_storage_type< 4u, Signed >::type, operations< 4u, Signed > >
Chris@102: {
Chris@102:     typedef msvc_arm_operations< typename make_storage_type< 4u, Signed >::type, operations< 4u, Signed > > base_type;
Chris@102:     typedef typename base_type::storage_type storage_type;
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         base_type::fence_before_store(order);
Chris@102:         BOOST_ATOMIC_DETAIL_ARM_STORE32(&storage, v);
Chris@102:         base_type::fence_after_store(order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type v = BOOST_ATOMIC_DETAIL_ARM_LOAD32(&storage);
Chris@102:         base_type::fence_after_load(order);
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool compare_exchange_strong(
Chris@102:         storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type previous = expected, old_val;
Chris@102: 
Chris@102:         switch (cas_common_order(success_order, failure_order))
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_RELAXED(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_ACQUIRE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE_RELEASE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         }
Chris@102:         expected = old_val;
Chris@102: 
Chris@102:         return (previous == old_val);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: template< bool Signed >
Chris@102: struct operations< 8u, Signed > :
Chris@102:     public msvc_arm_operations< typename make_storage_type< 8u, Signed >::type, operations< 8u, Signed > >
Chris@102: {
Chris@102:     typedef msvc_arm_operations< typename make_storage_type< 8u, Signed >::type, operations< 8u, Signed > > base_type;
Chris@102:     typedef typename base_type::storage_type storage_type;
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE void store(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         base_type::fence_before_store(order);
Chris@102:         BOOST_ATOMIC_DETAIL_ARM_STORE64(&storage, v);
Chris@102:         base_type::fence_after_store(order);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type load(storage_type const volatile& storage, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type v = BOOST_ATOMIC_DETAIL_ARM_LOAD64(&storage);
Chris@102:         base_type::fence_after_load(order);
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_add(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE_ADD64(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type exchange(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE64_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_EXCHANGE64(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE bool compare_exchange_strong(
Chris@102:         storage_type volatile& storage, storage_type& expected, storage_type desired, memory_order success_order, memory_order failure_order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         storage_type previous = expected, old_val;
Chris@102: 
Chris@102:         switch (cas_common_order(success_order, failure_order))
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64_RELAXED(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64_ACQUIRE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64_RELEASE(&storage, desired, previous));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             old_val = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_COMPARE_EXCHANGE64(&storage, desired, previous));
Chris@102:             break;
Chris@102:         }
Chris@102:         expected = old_val;
Chris@102: 
Chris@102:         return (previous == old_val);
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_and(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND64_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND64_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND64_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_AND64(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_or(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR64_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR64_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR64_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_OR64(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: 
Chris@102:     static BOOST_FORCEINLINE storage_type fetch_xor(storage_type volatile& storage, storage_type v, memory_order order) BOOST_NOEXCEPT
Chris@102:     {
Chris@102:         switch (order)
Chris@102:         {
Chris@102:         case memory_order_relaxed:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR64_RELAXED(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_consume:
Chris@102:         case memory_order_acquire:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR64_ACQUIRE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_release:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR64_RELEASE(&storage, v));
Chris@102:             break;
Chris@102:         case memory_order_acq_rel:
Chris@102:         case memory_order_seq_cst:
Chris@102:         default:
Chris@102:             v = static_cast< storage_type >(BOOST_ATOMIC_INTERLOCKED_XOR64(&storage, v));
Chris@102:             break;
Chris@102:         }
Chris@102:         return v;
Chris@102:     }
Chris@102: };
Chris@102: 
Chris@102: 
Chris@102: BOOST_FORCEINLINE void thread_fence(memory_order order) BOOST_NOEXCEPT
Chris@102: {
Chris@102:     BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102:     if (order != memory_order_relaxed)
Chris@102:         msvc_arm_operations_base::hardware_full_fence();
Chris@102:     BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102: }
Chris@102: 
Chris@102: BOOST_FORCEINLINE void signal_fence(memory_order order) BOOST_NOEXCEPT
Chris@102: {
Chris@102:     if (order != memory_order_relaxed)
Chris@102:         BOOST_ATOMIC_DETAIL_COMPILER_BARRIER();
Chris@102: }
Chris@102: 
Chris@102: } // namespace detail
Chris@102: } // namespace atomics
Chris@102: } // namespace boost
Chris@102: 
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_LOAD8
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_LOAD16
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_LOAD32
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_LOAD64
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_STORE8
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_STORE16
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_STORE32
Chris@102: #undef BOOST_ATOMIC_DETAIL_ARM_STORE64
Chris@102: 
Chris@102: #endif // BOOST_ATOMIC_DETAIL_OPS_MSVC_ARM_HPP_INCLUDED_