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 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); }
43 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); }
44 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); }
45
46 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
47 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
48 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
49
50 // For Sun Studio - implementation is in solaris_x86_64.il.
51
52 extern "C" {
53 jint _Atomic_add(jint add_value, volatile jint* dest);
54 jlong _Atomic_add_long(jlong add_value, volatile jlong* dest);
55
56 jint _Atomic_xchg(jint exchange_value, volatile jint* dest);
57 jbyte _Atomic_cmpxchg_byte(jbyte exchange_value, volatile jbyte* dest,
58 jbyte compare_value);
59 jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest,
60 jint compare_value);
61 jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest,
62 jlong compare_value);
63 }
64
65 template<size_t byte_size>
66 struct Atomic::PlatformAdd
67 : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
68 {
69 template<typename I, typename D>
70 D add_and_fetch(I add_value, D volatile* dest) const;
71 };
72
73 // Not using add_using_helper; see comment for cmpxchg.
74 template<>
75 template<typename I, typename D>
76 inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest) const {
77 STATIC_ASSERT(4 == sizeof(I));
78 STATIC_ASSERT(4 == sizeof(D));
79 return PrimitiveConversions::cast<D>(
80 _Atomic_add(PrimitiveConversions::cast<jint>(add_value),
81 reinterpret_cast<jint volatile*>(dest)));
82 }
83
84 // Not using add_using_helper; see comment for cmpxchg.
85 template<>
86 template<typename I, typename D>
87 inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest) const {
88 STATIC_ASSERT(8 == sizeof(I));
89 STATIC_ASSERT(8 == sizeof(D));
90 return PrimitiveConversions::cast<D>(
91 _Atomic_add_long(PrimitiveConversions::cast<jlong>(add_value),
92 reinterpret_cast<jlong volatile*>(dest)));
93 }
94
95 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
96 return _Atomic_xchg(exchange_value, 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>
107 inline T Atomic::PlatformCmpxchg<1>::operator()(T exchange_value,
108 T volatile* dest,
109 T compare_value,
110 cmpxchg_memory_order order) const {
111 STATIC_ASSERT(1 == sizeof(T));
112 return PrimitiveConversions::cast<T>(
113 _Atomic_cmpxchg_byte(PrimitiveConversions::cast<jbyte>(exchange_value),
114 reinterpret_cast<jbyte volatile*>(dest),
115 PrimitiveConversions::cast<jbyte>(compare_value)));
116 }
117
118 template<>
119 template<typename T>
120 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
121 T volatile* dest,
122 T compare_value,
123 cmpxchg_memory_order order) const {
124 STATIC_ASSERT(4 == sizeof(T));
125 return PrimitiveConversions::cast<T>(
126 _Atomic_cmpxchg(PrimitiveConversions::cast<jint>(exchange_value),
127 reinterpret_cast<jint volatile*>(dest),
128 PrimitiveConversions::cast<jint>(compare_value)));
129 }
130
131 template<>
132 template<typename T>
133 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
134 T volatile* dest,
135 T compare_value,
136 cmpxchg_memory_order order) const {
137 STATIC_ASSERT(8 == sizeof(T));
138 return PrimitiveConversions::cast<T>(
139 _Atomic_cmpxchg_long(PrimitiveConversions::cast<jlong>(exchange_value),
140 reinterpret_cast<jlong volatile*>(dest),
141 PrimitiveConversions::cast<jlong>(compare_value)));
142 }
143
144 inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
145 inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
146 extern "C" jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest);
147
148 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
149 return (intptr_t)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest);
150 }
151
152 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
153 return (void*)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest);
154 }
155
156 inline jlong Atomic::load(const volatile jlong* src) { return *src; }
157
158 #endif // OS_CPU_SOLARIS_X86_VM_ATOMIC_SOLARIS_X86_HPP