116 }
117
118 template<>
119 template<typename T>
120 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
121 T volatile* dest,
122 T compare_value,
123 cmpxchg_memory_order /* order */) const {
124 STATIC_ASSERT(8 == sizeof(T));
125 __asm__ __volatile__ ("lock cmpxchgq %1,(%3)"
126 : "=a" (exchange_value)
127 : "r" (exchange_value), "a" (compare_value), "r" (dest)
128 : "cc", "memory");
129 return exchange_value;
130 }
131
132 #else // !AMD64
133
134 extern "C" {
135 // defined in linux_x86.s
136 jlong _Atomic_cmpxchg_long(jlong, volatile jlong*, jlong);
137 void _Atomic_move_long(const volatile jlong* src, volatile jlong* dst);
138 }
139
140 template<>
141 template<typename T>
142 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
143 T volatile* dest,
144 T compare_value,
145 cmpxchg_memory_order order) const {
146 STATIC_ASSERT(8 == sizeof(T));
147 return cmpxchg_using_helper<jlong>(_Atomic_cmpxchg_long, exchange_value, dest, compare_value);
148 }
149
150 template<>
151 template<typename T>
152 inline T Atomic::PlatformLoad<8>::operator()(T const volatile* src) const {
153 STATIC_ASSERT(8 == sizeof(T));
154 volatile jlong dest;
155 _Atomic_move_long(reinterpret_cast<const volatile jlong*>(src), reinterpret_cast<volatile jlong*>(&dest));
156 return PrimitiveConversions::cast<T>(dest);
157 }
158
159 template<>
160 template<typename T>
161 inline void Atomic::PlatformStore<8>::operator()(T store_value,
162 T volatile* dest) const {
163 STATIC_ASSERT(8 == sizeof(T));
164 _Atomic_move_long(reinterpret_cast<const volatile jlong*>(&store_value), reinterpret_cast<volatile jlong*>(dest));
165 }
166
167 #endif // AMD64
168
169 #endif // OS_CPU_LINUX_X86_VM_ATOMIC_LINUX_X86_HPP
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116 }
117
118 template<>
119 template<typename T>
120 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
121 T volatile* dest,
122 T compare_value,
123 cmpxchg_memory_order /* order */) const {
124 STATIC_ASSERT(8 == sizeof(T));
125 __asm__ __volatile__ ("lock cmpxchgq %1,(%3)"
126 : "=a" (exchange_value)
127 : "r" (exchange_value), "a" (compare_value), "r" (dest)
128 : "cc", "memory");
129 return exchange_value;
130 }
131
132 #else // !AMD64
133
134 extern "C" {
135 // defined in linux_x86.s
136 int64_t _Atomic_cmpxchg_long(int64_t, volatile int64_t*, int64_t);
137 void _Atomic_move_long(const volatile int64_t* src, volatile int64_t* dst);
138 }
139
140 template<>
141 template<typename T>
142 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
143 T volatile* dest,
144 T compare_value,
145 cmpxchg_memory_order order) const {
146 STATIC_ASSERT(8 == sizeof(T));
147 return cmpxchg_using_helper<int64_t>(_Atomic_cmpxchg_long, exchange_value, dest, compare_value);
148 }
149
150 template<>
151 template<typename T>
152 inline T Atomic::PlatformLoad<8>::operator()(T const volatile* src) const {
153 STATIC_ASSERT(8 == sizeof(T));
154 volatile int64_t dest;
155 _Atomic_move_long(reinterpret_cast<const volatile int64_t*>(src), reinterpret_cast<volatile int64_t*>(&dest));
156 return PrimitiveConversions::cast<T>(dest);
157 }
158
159 template<>
160 template<typename T>
161 inline void Atomic::PlatformStore<8>::operator()(T store_value,
162 T volatile* dest) const {
163 STATIC_ASSERT(8 == sizeof(T));
164 _Atomic_move_long(reinterpret_cast<const volatile int64_t*>(&store_value), reinterpret_cast<volatile int64_t*>(dest));
165 }
166
167 #endif // AMD64
168
169 #endif // OS_CPU_LINUX_X86_VM_ATOMIC_LINUX_X86_HPP
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