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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // Implementation of class OrderAccess.
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26
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27 // Assume TSO.
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28
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29 // In solaris_sparc.il
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30 extern "C" void _OrderAccess_acquire();
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31 extern "C" void _OrderAccess_fence();
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32
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33 inline void OrderAccess::loadload() { acquire(); }
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34 inline void OrderAccess::storestore() { release(); }
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35 inline void OrderAccess::loadstore() { acquire(); }
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36 inline void OrderAccess::storeload() { fence(); }
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37
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38 #ifdef _GNU_SOURCE
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39
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40 inline void OrderAccess::acquire() {
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41 __asm__ volatile ("nop" : : :);
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42 }
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43
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44 inline void OrderAccess::release() {
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45 jint* dummy = (jint*)&dummy;
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46 __asm__ volatile("stw %%g0, [%0]" : : "r" (dummy) : "memory");
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47 }
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48
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49 inline void OrderAccess::fence() {
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50 __asm__ volatile ("membar #StoreLoad" : : :);
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51 }
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52
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53 #else // _GNU_SOURCE
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54
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55 inline void OrderAccess::acquire() {
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56 _OrderAccess_acquire();
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57 }
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58
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59 inline void OrderAccess::release() {
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60 dummy = 0;
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61 }
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62
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63 inline void OrderAccess::fence() {
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64 _OrderAccess_fence();
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65 }
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66
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67 #endif // _GNU_SOURCE
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68
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69 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; }
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70 inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; }
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71 inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; }
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72 inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; }
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73 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; }
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74 inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; }
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75 inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; }
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76 inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; }
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77 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; }
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78 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; }
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79
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80 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; }
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81 inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; }
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82 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; }
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83
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84 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; }
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85 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; }
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86 inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; }
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87 inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; }
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88 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; }
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89 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; }
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90 inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; }
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91 inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; }
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92 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; }
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93 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; }
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94
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95 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; }
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96 inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; }
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97
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98 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
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99 inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
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100 inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
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101 inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; fence(); }
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102 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
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103 inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
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104 inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
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105 inline void OrderAccess::store_fence(julong* p, julong v) { *p = v; fence(); }
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106 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
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107 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); }
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108
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109 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
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110 inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
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111
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112 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { *p = v; fence(); }
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113 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { *p = v; fence(); }
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114 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { *p = v; fence(); }
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115 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { *p = v; fence(); }
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116 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { *p = v; fence(); }
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117 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { *p = v; fence(); }
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118 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { *p = v; fence(); }
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119 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { *p = v; fence(); }
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120 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); }
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121 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); }
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122
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123 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { *p = v; fence(); }
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124 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { *(void* volatile *)p = v; fence(); }
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