1 /*
2 * Copyright (c) 1999, 2017, 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 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
29 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
30 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
31
32
33 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
34 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
35
36 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
37 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
38 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
39 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
40 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
41
42 // For Sun Studio - implementation is in solaris_x86_64.il.
43
44 extern "C" {
45 jint _Atomic_add(jint add_value, volatile jint* dest);
46 jlong _Atomic_add_long(jlong add_value, volatile jlong* dest);
47
48 jint _Atomic_xchg(jint exchange_value, volatile jint* dest);
49 jbyte _Atomic_cmpxchg_byte(jbyte exchange_value, volatile jbyte* dest,
50 jbyte compare_value);
51 jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest,
52 jint compare_value);
53 jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest,
54 jlong compare_value);
55 }
56
57 template<size_t byte_size>
58 struct Atomic::PlatformAdd
59 : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
60 {
61 template<typename I, typename D>
62 D add_and_fetch(I add_value, D volatile* dest) const;
63 };
64
65 // Not using add_using_helper; see comment for cmpxchg.
66 template<>
67 template<typename I, typename D>
68 inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest) const {
69 STATIC_ASSERT(4 == sizeof(I));
70 STATIC_ASSERT(4 == sizeof(D));
71 return PrimitiveConversions::cast<D>(
72 _Atomic_add(PrimitiveConversions::cast<jint>(add_value),
73 reinterpret_cast<jint volatile*>(dest)));
74 }
75
76 // Not using add_using_helper; see comment for cmpxchg.
77 template<>
78 template<typename I, typename D>
79 inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest) const {
80 STATIC_ASSERT(8 == sizeof(I));
81 STATIC_ASSERT(8 == sizeof(D));
82 return PrimitiveConversions::cast<D>(
83 _Atomic_add_long(PrimitiveConversions::cast<jlong>(add_value),
84 reinterpret_cast<jlong volatile*>(dest)));
85 }
86
87 template<>
88 template<typename T>
89 inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
90 T volatile* dest) const {
91 STATIC_ASSERT(4 == sizeof(T));
92 return PrimitiveConversions::cast<T>(
93 _Atomic_xchg(PrimitiveConversions::cast<jint>(exchange_value),
94 reinterpret_cast<jint volatile*>(dest)));
95 }
96
97 extern "C" jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest);
98
99 template<>
100 template<typename T>
101 inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
102 T volatile* dest) const {
103 STATIC_ASSERT(8 == sizeof(T));
104 return PrimitiveConversions::cast<T>(
105 _Atomic_xchg_long(PrimitiveConversions::cast<jlong>(exchange_value),
106 reinterpret_cast<jlong volatile*>(dest)));
107 }
108
109 // Not using cmpxchg_using_helper here, because some configurations of
110 // Solaris compiler don't deal well with passing a "defined in .il"
111 // function as an argument. We *should* switch to using gcc-style
112 // inline assembly, but attempting to do so with Studio 12.4 ran into
113 // segfaults.
114
115 template<>
116 template<typename T>
117 inline T Atomic::PlatformCmpxchg<1>::operator()(T exchange_value,
118 T volatile* dest,
119 T compare_value,
120 cmpxchg_memory_order order) const {
121 STATIC_ASSERT(1 == sizeof(T));
122 return PrimitiveConversions::cast<T>(
123 _Atomic_cmpxchg_byte(PrimitiveConversions::cast<jbyte>(exchange_value),
124 reinterpret_cast<jbyte volatile*>(dest),
125 PrimitiveConversions::cast<jbyte>(compare_value)));
126 }
127
128 template<>
129 template<typename T>
130 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
131 T volatile* dest,
132 T compare_value,
133 cmpxchg_memory_order order) const {
134 STATIC_ASSERT(4 == sizeof(T));
135 return PrimitiveConversions::cast<T>(
136 _Atomic_cmpxchg(PrimitiveConversions::cast<jint>(exchange_value),
137 reinterpret_cast<jint volatile*>(dest),
138 PrimitiveConversions::cast<jint>(compare_value)));
139 }
140
141 template<>
142 template<typename T>
143 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
144 T volatile* dest,
145 T compare_value,
146 cmpxchg_memory_order order) const {
147 STATIC_ASSERT(8 == sizeof(T));
148 return PrimitiveConversions::cast<T>(
149 _Atomic_cmpxchg_long(PrimitiveConversions::cast<jlong>(exchange_value),
150 reinterpret_cast<jlong volatile*>(dest),
151 PrimitiveConversions::cast<jlong>(compare_value)));
152 }
153
154 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
155 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
156 inline jlong Atomic::load(const volatile jlong* src) { return *src; }
157
158 #endif // OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_HPP