1 /*
2 * Copyright (c) 2003, 2010, 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 // Implementation of class OrderAccess.
26
27 // Assume TSO.
28
29 inline void OrderAccess::loadload() { acquire(); }
30 inline void OrderAccess::storestore() { release(); }
31 inline void OrderAccess::loadstore() { acquire(); }
32 inline void OrderAccess::storeload() { fence(); }
33
34 inline void OrderAccess::acquire() {
35 __asm__ volatile ("nop" : : :);
36 }
37
38 inline void OrderAccess::release() {
39 jint* local_dummy = (jint*)&local_dummy;
40 __asm__ volatile("stw %%g0, [%0]" : : "r" (local_dummy) : "memory");
41 }
42
43 inline void OrderAccess::fence() {
44 __asm__ volatile ("membar #StoreLoad" : : :);
45 }
46
47 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; }
48 inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; }
49 inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; }
50 inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; }
51 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; }
52 inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; }
53 inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; }
54 inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; }
55 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; }
56 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; }
57
58 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; }
59 inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; }
60 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; }
61
62 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; }
63 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; }
64 inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; }
65 inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; }
66 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; }
67 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; }
68 inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; }
69 inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; }
70 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; }
71 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; }
72
73 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; }
74 inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; }
75
76 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
77 inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
78 inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
79 inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; fence(); }
80 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
81 inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
82 inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
83 inline void OrderAccess::store_fence(julong* p, julong v) { *p = v; fence(); }
84 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
85 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); }
86
87 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
88 inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
89
90 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { *p = v; fence(); }
91 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { *p = v; fence(); }
92 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { *p = v; fence(); }
93 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { *p = v; fence(); }
94 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { *p = v; fence(); }
95 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { *p = v; fence(); }
96 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { *p = v; fence(); }
97 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { *p = v; fence(); }
98 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); }
99 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); }
100
101 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { *p = v; fence(); }
102 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { *(void* volatile *)p = v; fence(); }