1010
|
1 /*
|
|
2 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
|
|
3 * Copyright 2007, 2008, 2009 Red Hat, Inc.
|
|
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
5 *
|
|
6 * This code is free software; you can redistribute it and/or modify it
|
|
7 * under the terms of the GNU General Public License version 2 only, as
|
|
8 * published by the Free Software Foundation.
|
|
9 *
|
|
10 * This code is distributed in the hope that it will be useful, but WITHOUT
|
|
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
13 * version 2 for more details (a copy is included in the LICENSE file that
|
|
14 * accompanied this code).
|
|
15 *
|
|
16 * You should have received a copy of the GNU General Public License version
|
|
17 * 2 along with this work; if not, write to the Free Software Foundation,
|
|
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
19 *
|
|
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
21 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
22 * have any questions.
|
|
23 *
|
|
24 */
|
|
25
|
|
26 #ifdef ARM
|
|
27
|
|
28 /*
|
|
29 * ARM Kernel helper for memory barrier.
|
|
30 * Using __asm __volatile ("":::"memory") does not work reliable on ARM
|
|
31 * and gcc __sync_synchronize(); implementation does not use the kernel
|
|
32 * helper for all gcc versions so it is unreliable to use as well.
|
|
33 */
|
|
34 typedef void (__kernel_dmb_t) (void);
|
|
35 #define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0)
|
|
36
|
|
37 #define FULL_MEM_BARRIER __kernel_dmb()
|
|
38 #define READ_MEM_BARRIER __kernel_dmb()
|
|
39 #define WRITE_MEM_BARRIER __kernel_dmb()
|
|
40
|
|
41 #else // ARM
|
|
42
|
|
43 #define FULL_MEM_BARRIER __sync_synchronize()
|
|
44
|
|
45 #ifdef PPC
|
|
46
|
|
47 #define READ_MEM_BARRIER __asm __volatile ("isync":::"memory")
|
|
48 #ifdef __NO_LWSYNC__
|
|
49 #define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory")
|
|
50 #else
|
|
51 #define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory")
|
|
52 #endif
|
|
53
|
|
54 #else // PPC
|
|
55
|
|
56 #define READ_MEM_BARRIER __asm __volatile ("":::"memory")
|
|
57 #define WRITE_MEM_BARRIER __asm __volatile ("":::"memory")
|
|
58
|
|
59 #endif // PPC
|
|
60
|
|
61 #endif // ARM
|
|
62
|
|
63
|
|
64 inline void OrderAccess::loadload() { acquire(); }
|
|
65 inline void OrderAccess::storestore() { release(); }
|
|
66 inline void OrderAccess::loadstore() { acquire(); }
|
|
67 inline void OrderAccess::storeload() { fence(); }
|
|
68
|
|
69 inline void OrderAccess::acquire() {
|
|
70 READ_MEM_BARRIER;
|
|
71 }
|
|
72
|
|
73 inline void OrderAccess::release() {
|
|
74 WRITE_MEM_BARRIER;
|
|
75 }
|
|
76
|
|
77 inline void OrderAccess::fence() {
|
|
78 FULL_MEM_BARRIER;
|
|
79 }
|
|
80
|
|
81 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { jbyte data = *p; acquire(); return data; }
|
|
82 inline jshort OrderAccess::load_acquire(volatile jshort* p) { jshort data = *p; acquire(); return data; }
|
|
83 inline jint OrderAccess::load_acquire(volatile jint* p) { jint data = *p; acquire(); return data; }
|
|
84 inline jlong OrderAccess::load_acquire(volatile jlong* p) {
|
|
85 jlong tmp;
|
|
86 os::atomic_copy64(p, &tmp);
|
|
87 acquire();
|
|
88 return tmp;
|
|
89 }
|
|
90 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { jubyte data = *p; acquire(); return data; }
|
|
91 inline jushort OrderAccess::load_acquire(volatile jushort* p) { jushort data = *p; acquire(); return data; }
|
|
92 inline juint OrderAccess::load_acquire(volatile juint* p) { juint data = *p; acquire(); return data; }
|
|
93 inline julong OrderAccess::load_acquire(volatile julong* p) {
|
|
94 julong tmp;
|
|
95 os::atomic_copy64(p, &tmp);
|
|
96 acquire();
|
|
97 return tmp;
|
|
98 }
|
|
99 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { jfloat data = *p; acquire(); return data; }
|
|
100 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) {
|
|
101 jdouble tmp;
|
|
102 os::atomic_copy64(p, &tmp);
|
|
103 acquire();
|
|
104 return tmp;
|
|
105 }
|
|
106
|
|
107 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) {
|
|
108 intptr_t data = *p;
|
|
109 acquire();
|
|
110 return data;
|
|
111 }
|
|
112 inline void* OrderAccess::load_ptr_acquire(volatile void* p) {
|
|
113 void *data = *(void* volatile *)p;
|
|
114 acquire();
|
|
115 return data;
|
|
116 }
|
|
117 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) {
|
|
118 void *data = *(void* const volatile *)p;
|
|
119 acquire();
|
|
120 return data;
|
|
121 }
|
|
122
|
|
123 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { release(); *p = v; }
|
|
124 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { release(); *p = v; }
|
|
125 inline void OrderAccess::release_store(volatile jint* p, jint v) { release(); *p = v; }
|
|
126 inline void OrderAccess::release_store(volatile jlong* p, jlong v)
|
|
127 { release(); os::atomic_copy64(&v, p); }
|
|
128 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { release(); *p = v; }
|
|
129 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; }
|
|
130 inline void OrderAccess::release_store(volatile juint* p, juint v) { release(); *p = v; }
|
|
131 inline void OrderAccess::release_store(volatile julong* p, julong v)
|
|
132 { release(); os::atomic_copy64(&v, p); }
|
|
133 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { release(); *p = v; }
|
|
134 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v)
|
|
135 { release(); os::atomic_copy64(&v, p); }
|
|
136
|
|
137 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; }
|
|
138 inline void OrderAccess::release_store_ptr(volatile void* p, void* v)
|
|
139 { release(); *(void* volatile *)p = v; }
|
|
140
|
|
141 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
|
|
142 inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
|
|
143 inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
|
|
144 inline void OrderAccess::store_fence(jlong* p, jlong v) { os::atomic_copy64(&v, p); fence(); }
|
|
145 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
|
|
146 inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
|
|
147 inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
|
|
148 inline void OrderAccess::store_fence(julong* p, julong v) { os::atomic_copy64(&v, p); fence(); }
|
|
149 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
|
|
150 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); }
|
|
151
|
|
152 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
|
|
153 inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
|
|
154
|
|
155 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { release_store(p, v); fence(); }
|
|
156 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { release_store(p, v); fence(); }
|
|
157 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { release_store(p, v); fence(); }
|
|
158 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { release_store(p, v); fence(); }
|
|
159 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store(p, v); fence(); }
|
|
160 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); }
|
|
161 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store(p, v); fence(); }
|
|
162 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store(p, v); fence(); }
|
|
163 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { release_store(p, v); fence(); }
|
|
164 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); }
|
|
165
|
|
166 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); }
|
|
167 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { release_store_ptr(p, v); fence(); }
|