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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/extra_ops_gcc_ppc.hpp
+ *
+ * This header contains implementation of the extra atomic operations for PowerPC.
+ */
+
+#ifndef BOOST_ATOMIC_DETAIL_EXTRA_OPS_GCC_PPC_HPP_INCLUDED_
+#define BOOST_ATOMIC_DETAIL_EXTRA_OPS_GCC_PPC_HPP_INCLUDED_
+
+#include <cstddef>
+#include <boost/memory_order.hpp>
+#include <boost/atomic/detail/config.hpp>
+#include <boost/atomic/detail/storage_type.hpp>
+#include <boost/atomic/detail/extra_operations_fwd.hpp>
+#include <boost/atomic/detail/extra_ops_generic.hpp>
+#include <boost/atomic/detail/ops_gcc_ppc_common.hpp>
+#include <boost/atomic/capabilities.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+namespace atomics {
+namespace detail {
+
+#if defined(BOOST_ATOMIC_DETAIL_PPC_HAS_LBARX_STBCX)
+
+template< typename Base, bool Signed >
+struct extra_operations< Base, 1u, Signed > :
+ public generic_extra_operations< Base, 1u, Signed >
+{
+ typedef generic_extra_operations< Base, 1u, Signed > base_type;
+ typedef typename base_type::storage_type storage_type;
+
+ static BOOST_FORCEINLINE storage_type fetch_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "lbarx %0,%y2\n\t"
+ "neg %1,%0\n\t"
+ "stbcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "lbarx %0,%y2\n\t"
+ "nor %1,%0,%0\n\t"
+ "stbcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_negate(storage, order);
+ }
+
+ static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_complement(storage, order);
+ }
+};
+
+#endif // defined(BOOST_ATOMIC_DETAIL_PPC_HAS_LBARX_STBCX)
+
+#if defined(BOOST_ATOMIC_DETAIL_PPC_HAS_LHARX_STHCX)
+
+template< typename Base, bool Signed >
+struct extra_operations< Base, 2u, Signed > :
+ public generic_extra_operations< Base, 2u, Signed >
+{
+ typedef generic_extra_operations< Base, 2u, Signed > base_type;
+ typedef typename base_type::storage_type storage_type;
+
+ static BOOST_FORCEINLINE storage_type fetch_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "lharx %0,%y2\n\t"
+ "neg %1,%0\n\t"
+ "sthcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "lharx %0,%y2\n\t"
+ "nor %1,%0,%0\n\t"
+ "sthcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_negate(storage, order);
+ }
+
+ static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_complement(storage, order);
+ }
+};
+
+#endif // defined(BOOST_ATOMIC_DETAIL_PPC_HAS_LHARX_STHCX)
+
+template< typename Base, bool Signed >
+struct extra_operations< Base, 4u, Signed > :
+ public generic_extra_operations< Base, 4u, Signed >
+{
+ typedef generic_extra_operations< Base, 4u, Signed > base_type;
+ typedef typename base_type::storage_type storage_type;
+
+ static BOOST_FORCEINLINE storage_type fetch_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "lwarx %0,%y2\n\t"
+ "neg %1,%0\n\t"
+ "stwcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "lwarx %0,%y2\n\t"
+ "nor %1,%0,%0\n\t"
+ "stwcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_negate(storage, order);
+ }
+
+ static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_complement(storage, order);
+ }
+};
+
+#if defined(BOOST_ATOMIC_DETAIL_PPC_HAS_LDARX_STDCX)
+
+template< typename Base, bool Signed >
+struct extra_operations< Base, 8u, Signed > :
+ public generic_extra_operations< Base, 8u, Signed >
+{
+ typedef generic_extra_operations< Base, 8u, Signed > base_type;
+ typedef typename base_type::storage_type storage_type;
+
+ static BOOST_FORCEINLINE storage_type fetch_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "ldarx %0,%y2\n\t"
+ "neg %1,%0\n\t"
+ "stdcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE storage_type fetch_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ gcc_ppc_operations_base::fence_before(order);
+ storage_type original, tmp;
+ __asm__ __volatile__
+ (
+ "1:\n\t"
+ "ldarx %0,%y2\n\t"
+ "nor %1,%0,%0\n\t"
+ "stdcx. %1,%y2\n\t"
+ "bne- 1b\n\t"
+ : "=&b" (original), "=&b" (tmp), "+Z" (storage)
+ :
+ : BOOST_ATOMIC_DETAIL_ASM_CLOBBER_CC
+ );
+ gcc_ppc_operations_base::fence_after(order);
+ return original;
+ }
+
+ static BOOST_FORCEINLINE void opaque_negate(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_negate(storage, order);
+ }
+
+ static BOOST_FORCEINLINE void opaque_complement(storage_type volatile& storage, memory_order order) BOOST_NOEXCEPT
+ {
+ fetch_complement(storage, order);
+ }
+};
+
+#endif // defined(BOOST_ATOMIC_DETAIL_PPC_HAS_LDARX_STDCX)
+
+} // namespace detail
+} // namespace atomics
+} // namespace boost
+
+#endif // BOOST_ATOMIC_DETAIL_EXTRA_OPS_GCC_ARM_PPC_INCLUDED_