1 /* 2 * Copyright (c) 1999, 2017, 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 #ifndef OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP 26 #define OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP 27 28 #include "runtime/os.hpp" 29 30 // Implementation of class atomic 31 32 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } 33 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } 34 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } 35 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } 36 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } 37 38 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } 39 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } 40 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } 41 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } 42 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } 43 44 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } 45 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } 46 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } 47 48 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } 49 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } 50 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } 51 52 53 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; } 54 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; } 55 inline jlong Atomic::load(const volatile jlong* src) { return *src; } 56 57 #ifdef _GNU_SOURCE 58 59 inline jint Atomic::add (jint add_value, volatile jint* dest) { 60 intptr_t rv; 61 __asm__ volatile( 62 "1: \n\t" 63 " ld [%2], %%o2\n\t" 64 " add %1, %%o2, %%o3\n\t" 65 " cas [%2], %%o2, %%o3\n\t" 66 " cmp %%o2, %%o3\n\t" 67 " bne 1b\n\t" 68 " nop\n\t" 69 " add %1, %%o2, %0\n\t" 70 : "=r" (rv) 71 : "r" (add_value), "r" (dest) 72 : "memory", "o2", "o3"); 73 return rv; 74 } 75 76 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 77 intptr_t rv; 78 __asm__ volatile( 79 "1: \n\t" 80 " ldx [%2], %%o2\n\t" 81 " add %0, %%o2, %%o3\n\t" 82 " casx [%2], %%o2, %%o3\n\t" 83 " cmp %%o2, %%o3\n\t" 84 " bne %%xcc, 1b\n\t" 85 " nop\n\t" 86 " add %0, %%o2, %0\n\t" 87 : "=r" (rv) 88 : "r" (add_value), "r" (dest) 89 : "memory", "o2", "o3"); 90 return rv; 91 } 92 93 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 94 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 95 } 96 97 98 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 99 intptr_t rv = exchange_value; 100 __asm__ volatile( 101 " swap [%2],%1\n\t" 102 : "=r" (rv) 103 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 104 : "memory"); 105 return rv; 106 } 107 108 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 109 intptr_t rv = exchange_value; 110 __asm__ volatile( 111 "1:\n\t" 112 " mov %1, %%o3\n\t" 113 " ldx [%2], %%o2\n\t" 114 " casx [%2], %%o2, %%o3\n\t" 115 " cmp %%o2, %%o3\n\t" 116 " bne %%xcc, 1b\n\t" 117 " nop\n\t" 118 " mov %%o2, %0\n\t" 119 : "=r" (rv) 120 : "r" (exchange_value), "r" (dest) 121 : "memory", "o2", "o3"); 122 return rv; 123 } 124 125 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 126 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 127 } 128 129 130 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 131 jint rv; 132 __asm__ volatile( 133 " cas [%2], %3, %0" 134 : "=r" (rv) 135 : "0" (exchange_value), "r" (dest), "r" (compare_value) 136 : "memory"); 137 return rv; 138 } 139 140 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 141 jlong rv; 142 __asm__ volatile( 143 " casx [%2], %3, %0" 144 : "=r" (rv) 145 : "0" (exchange_value), "r" (dest), "r" (compare_value) 146 : "memory"); 147 return rv; 148 } 149 150 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 151 intptr_t rv; 152 __asm__ volatile( 153 " casx [%2], %3, %0" 154 : "=r" (rv) 155 : "0" (exchange_value), "r" (dest), "r" (compare_value) 156 : "memory"); 157 return rv; 158 } 159 160 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 161 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order); 162 } 163 164 #else // _GNU_SOURCE 165 166 // This is the interface to the atomic instructions in solaris_sparc.il. 167 // It's very messy because we need to support v8 and these instructions 168 // are illegal there. When sparc v8 is dropped, we can drop out lots of 169 // this code. Also compiler2 does not support v8 so the conditional code 170 // omits the instruction set check. 171 172 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest); 173 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest); 174 175 extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value); 176 extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); 177 extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value); 178 179 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest); 180 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest); 181 182 183 inline jint Atomic::add (jint add_value, volatile jint* dest) { 184 return _Atomic_add32(add_value, dest); 185 } 186 187 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 188 return _Atomic_add64(add_value, dest); 189 } 190 191 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 192 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 193 } 194 195 196 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 197 return _Atomic_swap32(exchange_value, dest); 198 } 199 200 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 201 return _Atomic_swap64(exchange_value, dest); 202 } 203 204 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 205 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 206 } 207 208 209 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 210 return _Atomic_cas32(exchange_value, dest, compare_value); 211 } 212 213 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 214 // Return 64 bit value in %o0 215 return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value); 216 } 217 218 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 219 return _Atomic_cas64(exchange_value, dest, compare_value); 220 } 221 222 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 223 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order); 224 } 225 226 #endif // _GNU_SOURCE 227 228 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP