Mercurial > hg > graal-compiler
annotate src/os_cpu/windows_x86/vm/orderAccess_windows_x86.inline.hpp @ 671:d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
Reviewed-by: kvn, phh
| author | never |
|---|---|
| date | Thu, 26 Mar 2009 14:31:45 -0700 |
| parents | a61af66fc99e |
| children | bd02caa94611 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #pragma warning(disable: 4035) // Disables warnings reporting missing return statement | |
| 26 | |
| 27 // Implementation of class OrderAccess. | |
| 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 #ifndef AMD64 | |
| 36 __asm { | |
| 37 mov eax, dword ptr [esp]; | |
| 38 } | |
| 39 #endif // !AMD64 | |
| 40 } | |
| 41 | |
| 42 inline void OrderAccess::release() { | |
| 43 // A volatile store has release semantics. | |
| 44 dummy = 0; | |
| 45 } | |
| 46 | |
| 47 inline void OrderAccess::fence() { | |
| 48 #ifdef AMD64 | |
|
671
d0994e5bebce
6822204: volatile fences should prefer lock:addl to actual mfence instructions
never
parents:
0
diff
changeset
|
49 StubRoutines_fence(); |
| 0 | 50 #else |
| 51 if (os::is_MP()) { | |
| 52 __asm { | |
| 53 lock add dword ptr [esp], 0; | |
| 54 } | |
| 55 } | |
| 56 #endif // AMD64 | |
| 57 } | |
| 58 | |
| 59 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; } | |
| 60 inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; } | |
| 61 inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; } | |
| 62 inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; } | |
| 63 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; } | |
| 64 inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; } | |
| 65 inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; } | |
| 66 inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; } | |
| 67 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; } | |
| 68 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; } | |
| 69 | |
| 70 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; } | |
| 71 inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; } | |
| 72 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; } | |
| 73 | |
| 74 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; } | |
| 75 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; } | |
| 76 inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; } | |
| 77 inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; } | |
| 78 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; } | |
| 79 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; } | |
| 80 inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; } | |
| 81 inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; } | |
| 82 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; } | |
| 83 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; } | |
| 84 | |
| 85 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; } | |
| 86 inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; } | |
| 87 | |
| 88 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { | |
| 89 #ifdef AMD64 | |
| 90 *p = v; fence(); | |
| 91 #else | |
| 92 __asm { | |
| 93 mov edx, p; | |
| 94 mov al, v; | |
| 95 xchg al, byte ptr [edx]; | |
| 96 } | |
| 97 #endif // AMD64 | |
| 98 } | |
| 99 | |
| 100 inline void OrderAccess::store_fence(jshort* p, jshort v) { | |
| 101 #ifdef AMD64 | |
| 102 *p = v; fence(); | |
| 103 #else | |
| 104 __asm { | |
| 105 mov edx, p; | |
| 106 mov ax, v; | |
| 107 xchg ax, word ptr [edx]; | |
| 108 } | |
| 109 #endif // AMD64 | |
| 110 } | |
| 111 | |
| 112 inline void OrderAccess::store_fence(jint* p, jint v) { | |
| 113 #ifdef AMD64 | |
| 114 *p = v; fence(); | |
| 115 #else | |
| 116 __asm { | |
| 117 mov edx, p; | |
| 118 mov eax, v; | |
| 119 xchg eax, dword ptr [edx]; | |
| 120 } | |
| 121 #endif // AMD64 | |
| 122 } | |
| 123 | |
| 124 inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; fence(); } | |
| 125 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { store_fence((jbyte*)p, (jbyte)v); } | |
| 126 inline void OrderAccess::store_fence(jushort* p, jushort v) { store_fence((jshort*)p, (jshort)v); } | |
| 127 inline void OrderAccess::store_fence(juint* p, juint v) { store_fence((jint*)p, (jint)v); } | |
| 128 inline void OrderAccess::store_fence(julong* p, julong v) { store_fence((jlong*)p, (jlong)v); } | |
| 129 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); } | |
| 130 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); } | |
| 131 | |
| 132 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { | |
| 133 #ifdef AMD64 | |
| 134 *p = v; fence(); | |
| 135 #else | |
| 136 store_fence((jint*)p, (jint)v); | |
| 137 #endif // AMD64 | |
| 138 } | |
| 139 | |
| 140 inline void OrderAccess::store_ptr_fence(void** p, void* v) { | |
| 141 #ifdef AMD64 | |
| 142 *p = v; fence(); | |
| 143 #else | |
| 144 store_fence((jint*)p, (jint)v); | |
| 145 #endif // AMD64 | |
| 146 } | |
| 147 | |
| 148 // Must duplicate definitions instead of calling store_fence because we don't want to cast away volatile. | |
| 149 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { | |
| 150 #ifdef AMD64 | |
| 151 *p = v; fence(); | |
| 152 #else | |
| 153 __asm { | |
| 154 mov edx, p; | |
| 155 mov al, v; | |
| 156 xchg al, byte ptr [edx]; | |
| 157 } | |
| 158 #endif // AMD64 | |
| 159 } | |
| 160 | |
| 161 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { | |
| 162 #ifdef AMD64 | |
| 163 *p = v; fence(); | |
| 164 #else | |
| 165 __asm { | |
| 166 mov edx, p; | |
| 167 mov ax, v; | |
| 168 xchg ax, word ptr [edx]; | |
| 169 } | |
| 170 #endif // AMD64 | |
| 171 } | |
| 172 | |
| 173 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { | |
| 174 #ifdef AMD64 | |
| 175 *p = v; fence(); | |
| 176 #else | |
| 177 __asm { | |
| 178 mov edx, p; | |
| 179 mov eax, v; | |
| 180 xchg eax, dword ptr [edx]; | |
| 181 } | |
| 182 #endif // AMD64 | |
| 183 } | |
| 184 | |
| 185 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { *p = v; fence(); } | |
| 186 | |
| 187 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store_fence((volatile jbyte*)p, (jbyte)v); } | |
| 188 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store_fence((volatile jshort*)p, (jshort)v); } | |
| 189 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store_fence((volatile jint*)p, (jint)v); } | |
| 190 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store_fence((volatile jlong*)p, (jlong)v); } | |
| 191 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); } | |
| 192 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); } | |
| 193 | |
| 194 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { | |
| 195 #ifdef AMD64 | |
| 196 *p = v; fence(); | |
| 197 #else | |
| 198 release_store_fence((volatile jint*)p, (jint)v); | |
| 199 #endif // AMD64 | |
| 200 } | |
| 201 | |
| 202 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { | |
| 203 #ifdef AMD64 | |
| 204 *(void* volatile *)p = v; fence(); | |
| 205 #else | |
| 206 release_store_fence((volatile jint*)p, (jint)v); | |
| 207 #endif // AMD64 | |
| 208 } | |
| 209 | |
| 210 #pragma warning(default: 4035) // Enables warnings reporting missing return statement |