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comparison src/os_cpu/bsd_zero/vm/orderAccess_bsd_zero.inline.hpp @ 3960:f08d439fab8c

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7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author never
date Sun, 25 Sep 2011 16:03:29 -0700
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3959:eda6988c0d81 3960:f08d439fab8c
1 /*
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP
27 #define OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP
28
29 #include "runtime/orderAccess.hpp"
30 #include "vm_version_zero.hpp"
31
32 #ifdef ARM
33
34 /*
35 * ARM Kernel helper for memory barrier.
36 * Using __asm __volatile ("":::"memory") does not work reliable on ARM
37 * and gcc __sync_synchronize(); implementation does not use the kernel
38 * helper for all gcc versions so it is unreliable to use as well.
39 */
40 typedef void (__kernel_dmb_t) (void);
41 #define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0)
42
43 #define FULL_MEM_BARRIER __kernel_dmb()
44 #define READ_MEM_BARRIER __kernel_dmb()
45 #define WRITE_MEM_BARRIER __kernel_dmb()
46
47 #else // ARM
48
49 #define FULL_MEM_BARRIER __sync_synchronize()
50
51 #ifdef PPC
52
53 #ifdef __NO_LWSYNC__
54 #define READ_MEM_BARRIER __asm __volatile ("sync":::"memory")
55 #define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory")
56 #else
57 #define READ_MEM_BARRIER __asm __volatile ("lwsync":::"memory")
58 #define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory")
59 #endif
60
61 #else // PPC
62
63 #define READ_MEM_BARRIER __asm __volatile ("":::"memory")
64 #define WRITE_MEM_BARRIER __asm __volatile ("":::"memory")
65
66 #endif // PPC
67
68 #endif // ARM
69
70
71 inline void OrderAccess::loadload() { acquire(); }
72 inline void OrderAccess::storestore() { release(); }
73 inline void OrderAccess::loadstore() { acquire(); }
74 inline void OrderAccess::storeload() { fence(); }
75
76 inline void OrderAccess::acquire() {
77 READ_MEM_BARRIER;
78 }
79
80 inline void OrderAccess::release() {
81 WRITE_MEM_BARRIER;
82 }
83
84 inline void OrderAccess::fence() {
85 FULL_MEM_BARRIER;
86 }
87
88 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { jbyte data = *p; acquire(); return data; }
89 inline jshort OrderAccess::load_acquire(volatile jshort* p) { jshort data = *p; acquire(); return data; }
90 inline jint OrderAccess::load_acquire(volatile jint* p) { jint data = *p; acquire(); return data; }
91 inline jlong OrderAccess::load_acquire(volatile jlong* p) {
92 jlong tmp;
93 os::atomic_copy64(p, &tmp);
94 acquire();
95 return tmp;
96 }
97 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { jubyte data = *p; acquire(); return data; }
98 inline jushort OrderAccess::load_acquire(volatile jushort* p) { jushort data = *p; acquire(); return data; }
99 inline juint OrderAccess::load_acquire(volatile juint* p) { juint data = *p; acquire(); return data; }
100 inline julong OrderAccess::load_acquire(volatile julong* p) {
101 julong tmp;
102 os::atomic_copy64(p, &tmp);
103 acquire();
104 return tmp;
105 }
106 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { jfloat data = *p; acquire(); return data; }
107 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) {
108 jdouble tmp;
109 os::atomic_copy64(p, &tmp);
110 acquire();
111 return tmp;
112 }
113
114 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) {
115 intptr_t data = *p;
116 acquire();
117 return data;
118 }
119 inline void* OrderAccess::load_ptr_acquire(volatile void* p) {
120 void *data = *(void* volatile *)p;
121 acquire();
122 return data;
123 }
124 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) {
125 void *data = *(void* const volatile *)p;
126 acquire();
127 return data;
128 }
129
130 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { release(); *p = v; }
131 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { release(); *p = v; }
132 inline void OrderAccess::release_store(volatile jint* p, jint v) { release(); *p = v; }
133 inline void OrderAccess::release_store(volatile jlong* p, jlong v)
134 { release(); os::atomic_copy64(&v, p); }
135 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { release(); *p = v; }
136 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; }
137 inline void OrderAccess::release_store(volatile juint* p, juint v) { release(); *p = v; }
138 inline void OrderAccess::release_store(volatile julong* p, julong v)
139 { release(); os::atomic_copy64(&v, p); }
140 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { release(); *p = v; }
141 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v)
142 { release(); os::atomic_copy64(&v, p); }
143
144 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; }
145 inline void OrderAccess::release_store_ptr(volatile void* p, void* v)
146 { release(); *(void* volatile *)p = v; }
147
148 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
149 inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
150 inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
151 inline void OrderAccess::store_fence(jlong* p, jlong v) { os::atomic_copy64(&v, p); fence(); }
152 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
153 inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
154 inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
155 inline void OrderAccess::store_fence(julong* p, julong v) { os::atomic_copy64(&v, p); fence(); }
156 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
157 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); }
158
159 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
160 inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
161
162 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { release_store(p, v); fence(); }
163 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { release_store(p, v); fence(); }
164 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { release_store(p, v); fence(); }
165 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { release_store(p, v); fence(); }
166 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store(p, v); fence(); }
167 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); }
168 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store(p, v); fence(); }
169 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store(p, v); fence(); }
170 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { release_store(p, v); fence(); }
171 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); }
172
173 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); }
174 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { release_store_ptr(p, v); fence(); }
175
176 #endif // OS_CPU_BSD_ZERO_VM_ORDERACCESS_BSD_ZERO_INLINE_HPP