1 /*
2 * Copyright (c) 1999, 2019, 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.
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23 */
24
25 #ifndef OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP
26 #define OS_CPU_SOLARIS_X86_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 template<typename D, typename I>
46 D add_and_fetch(D volatile* dest, I add_value, atomic_memory_order order) const;
47
48 template<typename D, typename I>
49 D fetch_and_add(D volatile* dest, I add_value, atomic_memory_order order) const {
50 return add_and_fetch(dest, add_value, order) - add_value;
51 }
52 };
53
54 // Not using add_using_helper; see comment for cmpxchg.
55 template<>
56 template<typename D, typename I>
57 inline D Atomic::PlatformAdd<4>::add_and_fetch(D volatile* dest, I add_value,
58 atomic_memory_order order) const {
59 STATIC_ASSERT(4 == sizeof(I));
60 STATIC_ASSERT(4 == sizeof(D));
61 return PrimitiveConversions::cast<D>(
62 _Atomic_add(PrimitiveConversions::cast<int32_t>(add_value),
63 reinterpret_cast<int32_t volatile*>(dest)));
64 }
65
66 // Not using add_using_helper; see comment for cmpxchg.
67 template<>
68 template<typename D, typename I>
69 inline D Atomic::PlatformAdd<8>::add_and_fetch(D volatile* dest, I add_value,
70 atomic_memory_order order) const {
71 STATIC_ASSERT(8 == sizeof(I));
72 STATIC_ASSERT(8 == sizeof(D));
73 return PrimitiveConversions::cast<D>(
74 _Atomic_add_long(PrimitiveConversions::cast<int64_t>(add_value),
75 reinterpret_cast<int64_t volatile*>(dest)));
76 }
77
78 template<>
79 template<typename T>
80 inline T Atomic::PlatformXchg<4>::operator()(T volatile* dest,
81 T exchange_value,
82 atomic_memory_order order) const {
83 STATIC_ASSERT(4 == sizeof(T));
84 return PrimitiveConversions::cast<T>(
85 _Atomic_xchg(PrimitiveConversions::cast<int32_t>(exchange_value),
86 reinterpret_cast<int32_t volatile*>(dest)));
87 }
88
89 extern "C" int64_t _Atomic_xchg_long(int64_t exchange_value, volatile int64_t* dest);
90
91 template<>
92 template<typename T>
93 inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,
94 T exchange_value,
95 atomic_memory_order order) const {
96 STATIC_ASSERT(8 == sizeof(T));
97 return PrimitiveConversions::cast<T>(
98 _Atomic_xchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
99 reinterpret_cast<int64_t volatile*>(dest)));
100 }
101
102 // Not using cmpxchg_using_helper here, because some configurations of
103 // Solaris compiler don't deal well with passing a "defined in .il"
104 // function as an argument. We *should* switch to using gcc-style
105 // inline assembly, but attempting to do so with Studio 12.4 ran into
106 // segfaults.
107
108 template<>
109 template<typename T>
110 inline T Atomic::PlatformCmpxchg<1>::operator()(T volatile* dest,
111 T compare_value,
112 T exchange_value,
113 atomic_memory_order order) const {
114 STATIC_ASSERT(1 == sizeof(T));
115 return PrimitiveConversions::cast<T>(
116 _Atomic_cmpxchg_byte(PrimitiveConversions::cast<int8_t>(exchange_value),
117 reinterpret_cast<int8_t volatile*>(dest),
118 PrimitiveConversions::cast<int8_t>(compare_value)));
119 }
120
121 template<>
122 template<typename T>
123 inline T Atomic::PlatformCmpxchg<4>::operator()(T volatile* dest,
124 T compare_value,
125 T exchange_value,
126 atomic_memory_order order) const {
127 STATIC_ASSERT(4 == sizeof(T));
128 return PrimitiveConversions::cast<T>(
129 _Atomic_cmpxchg(PrimitiveConversions::cast<int32_t>(exchange_value),
130 reinterpret_cast<int32_t volatile*>(dest),
131 PrimitiveConversions::cast<int32_t>(compare_value)));
132 }
133
134 template<>
135 template<typename T>
136 inline T Atomic::PlatformCmpxchg<8>::operator()(T volatile* dest,
137 T compare_value,
138 T exchange_value,
139 atomic_memory_order order) const {
140 STATIC_ASSERT(8 == sizeof(T));
141 return PrimitiveConversions::cast<T>(
142 _Atomic_cmpxchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
143 reinterpret_cast<int64_t volatile*>(dest),
144 PrimitiveConversions::cast<int64_t>(compare_value)));
145 }
146
147 #endif // OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP