1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_HPP
26 #define OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_HPP
27
28 // For Sun Studio - implementation is in solaris_x86_64.il.
29
30 extern "C" {
31 int32_t _Atomic_add(int32_t add_value, volatile int32_t* dest);
32 int64_t _Atomic_add_long(int64_t add_value, volatile int64_t* dest);
33
34 int32_t _Atomic_xchg(int32_t exchange_value, volatile int32_t* dest);
35 int8_t _Atomic_cmpxchg_byte(int8_t exchange_value, volatile int8_t* dest,
36 int8_t compare_value);
37 int32_t _Atomic_cmpxchg(int32_t exchange_value, volatile int32_t* dest,
38 int32_t compare_value);
39 int64_t _Atomic_cmpxchg_long(int64_t exchange_value, volatile int64_t* dest,
40 int64_t compare_value);
41 }
42
43 template<size_t byte_size>
44 struct Atomic::PlatformAdd
45 : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
46 {
47 template<typename I, typename D>
48 D add_and_fetch(I add_value, D volatile* dest, atomic_memory_order order) const;
49 };
50
51 // Not using add_using_helper; see comment for cmpxchg.
52 template<>
53 template<typename I, typename D>
add_and_fetch(I add_value,D volatile * dest,atomic_memory_order order) const54 inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest,
55 atomic_memory_order order) const {
56 STATIC_ASSERT(4 == sizeof(I));
57 STATIC_ASSERT(4 == sizeof(D));
58 return PrimitiveConversions::cast<D>(
59 _Atomic_add(PrimitiveConversions::cast<int32_t>(add_value),
60 reinterpret_cast<int32_t volatile*>(dest)));
61 }
62
63 // Not using add_using_helper; see comment for cmpxchg.
64 template<>
65 template<typename I, typename D>
add_and_fetch(I add_value,D volatile * dest,atomic_memory_order order) const66 inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest,
67 atomic_memory_order order) const {
68 STATIC_ASSERT(8 == sizeof(I));
69 STATIC_ASSERT(8 == sizeof(D));
70 return PrimitiveConversions::cast<D>(
71 _Atomic_add_long(PrimitiveConversions::cast<int64_t>(add_value),
72 reinterpret_cast<int64_t volatile*>(dest)));
73 }
74
75 template<>
76 template<typename T>
operator ()(T exchange_value,T volatile * dest,atomic_memory_order order) const77 inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
78 T volatile* dest,
79 atomic_memory_order order) const {
80 STATIC_ASSERT(4 == sizeof(T));
81 return PrimitiveConversions::cast<T>(
82 _Atomic_xchg(PrimitiveConversions::cast<int32_t>(exchange_value),
83 reinterpret_cast<int32_t volatile*>(dest)));
84 }
85
86 extern "C" int64_t _Atomic_xchg_long(int64_t exchange_value, volatile int64_t* dest);
87
88 template<>
89 template<typename T>
operator ()(T exchange_value,T volatile * dest,atomic_memory_order order) const90 inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
91 T volatile* dest,
92 atomic_memory_order order) const {
93 STATIC_ASSERT(8 == sizeof(T));
94 return PrimitiveConversions::cast<T>(
95 _Atomic_xchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
96 reinterpret_cast<int64_t volatile*>(dest)));
97 }
98
99 // Not using cmpxchg_using_helper here, because some configurations of
100 // Solaris compiler don't deal well with passing a "defined in .il"
101 // function as an argument. We *should* switch to using gcc-style
102 // inline assembly, but attempting to do so with Studio 12.4 ran into
103 // segfaults.
104
105 template<>
106 template<typename T>
operator ()(T exchange_value,T volatile * dest,T compare_value,atomic_memory_order order) const107 inline T Atomic::PlatformCmpxchg<1>::operator()(T exchange_value,
108 T volatile* dest,
109 T compare_value,
110 atomic_memory_order order) const {
111 STATIC_ASSERT(1 == sizeof(T));
112 return PrimitiveConversions::cast<T>(
113 _Atomic_cmpxchg_byte(PrimitiveConversions::cast<int8_t>(exchange_value),
114 reinterpret_cast<int8_t volatile*>(dest),
115 PrimitiveConversions::cast<int8_t>(compare_value)));
116 }
117
118 template<>
119 template<typename T>
operator ()(T exchange_value,T volatile * dest,T compare_value,atomic_memory_order order) const120 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
121 T volatile* dest,
122 T compare_value,
123 atomic_memory_order order) const {
124 STATIC_ASSERT(4 == sizeof(T));
125 return PrimitiveConversions::cast<T>(
126 _Atomic_cmpxchg(PrimitiveConversions::cast<int32_t>(exchange_value),
127 reinterpret_cast<int32_t volatile*>(dest),
128 PrimitiveConversions::cast<int32_t>(compare_value)));
129 }
130
131 template<>
132 template<typename T>
operator ()(T exchange_value,T volatile * dest,T compare_value,atomic_memory_order order) const133 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
134 T volatile* dest,
135 T compare_value,
136 atomic_memory_order order) const {
137 STATIC_ASSERT(8 == sizeof(T));
138 return PrimitiveConversions::cast<T>(
139 _Atomic_cmpxchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
140 reinterpret_cast<int64_t volatile*>(dest),
141 PrimitiveConversions::cast<int64_t>(compare_value)));
142 }
143
144 #endif // OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_HPP
145