1 /* 2 * Copyright (c) 1999, 2016, 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 #ifdef _LP64 54 55 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; } 56 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; } 57 inline jlong Atomic::load(volatile jlong* src) { return *src; } 58 59 #else 60 61 extern "C" void _Atomic_move_long_v9(volatile jlong* src, volatile jlong* dst); 62 63 inline void Atomic_move_long(volatile jlong* src, volatile jlong* dst) { 64 _Atomic_move_long_v9(src, dst); 65 } 66 67 inline jlong Atomic::load(volatile jlong* src) { 68 volatile jlong dest; 69 Atomic_move_long(src, &dest); 70 return dest; 71 } 72 73 inline void Atomic::store(jlong store_value, jlong* dest) { 74 Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); 75 } 76 77 inline void Atomic::store(jlong store_value, volatile jlong* dest) { 78 Atomic_move_long((volatile jlong*)&store_value, dest); 79 } 80 81 #endif 82 83 #ifdef _GNU_SOURCE 84 85 inline jint Atomic::add (jint add_value, volatile jint* dest) { 86 intptr_t rv; 87 __asm__ volatile( 88 "1: \n\t" 89 " ld [%2], %%o2\n\t" 90 " add %1, %%o2, %%o3\n\t" 91 " cas [%2], %%o2, %%o3\n\t" 92 " cmp %%o2, %%o3\n\t" 93 " bne 1b\n\t" 94 " nop\n\t" 95 " add %1, %%o2, %0\n\t" 96 : "=r" (rv) 97 : "r" (add_value), "r" (dest) 98 : "memory", "o2", "o3"); 99 return rv; 100 } 101 102 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 103 intptr_t rv; 104 #ifdef _LP64 105 __asm__ volatile( 106 "1: \n\t" 107 " ldx [%2], %%o2\n\t" 108 " add %0, %%o2, %%o3\n\t" 109 " casx [%2], %%o2, %%o3\n\t" 110 " cmp %%o2, %%o3\n\t" 111 " bne %%xcc, 1b\n\t" 112 " nop\n\t" 113 " add %0, %%o2, %0\n\t" 114 : "=r" (rv) 115 : "r" (add_value), "r" (dest) 116 : "memory", "o2", "o3"); 117 #else //_LP64 118 __asm__ volatile( 119 "1: \n\t" 120 " ld [%2], %%o2\n\t" 121 " add %1, %%o2, %%o3\n\t" 122 " cas [%2], %%o2, %%o3\n\t" 123 " cmp %%o2, %%o3\n\t" 124 " bne 1b\n\t" 125 " nop\n\t" 126 " add %1, %%o2, %0\n\t" 127 : "=r" (rv) 128 : "r" (add_value), "r" (dest) 129 : "memory", "o2", "o3"); 130 #endif // _LP64 131 return rv; 132 } 133 134 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 135 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 136 } 137 138 139 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 140 intptr_t rv = exchange_value; 141 __asm__ volatile( 142 " swap [%2],%1\n\t" 143 : "=r" (rv) 144 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 145 : "memory"); 146 return rv; 147 } 148 149 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 150 intptr_t rv = exchange_value; 151 #ifdef _LP64 152 __asm__ volatile( 153 "1:\n\t" 154 " mov %1, %%o3\n\t" 155 " ldx [%2], %%o2\n\t" 156 " casx [%2], %%o2, %%o3\n\t" 157 " cmp %%o2, %%o3\n\t" 158 " bne %%xcc, 1b\n\t" 159 " nop\n\t" 160 " mov %%o2, %0\n\t" 161 : "=r" (rv) 162 : "r" (exchange_value), "r" (dest) 163 : "memory", "o2", "o3"); 164 #else //_LP64 165 __asm__ volatile( 166 "swap [%2],%1\n\t" 167 : "=r" (rv) 168 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 169 : "memory"); 170 #endif // _LP64 171 return rv; 172 } 173 174 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 175 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 176 } 177 178 179 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 180 jint rv; 181 __asm__ volatile( 182 " cas [%2], %3, %0" 183 : "=r" (rv) 184 : "0" (exchange_value), "r" (dest), "r" (compare_value) 185 : "memory"); 186 return rv; 187 } 188 189 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 190 #ifdef _LP64 191 jlong rv; 192 __asm__ volatile( 193 " casx [%2], %3, %0" 194 : "=r" (rv) 195 : "0" (exchange_value), "r" (dest), "r" (compare_value) 196 : "memory"); 197 return rv; 198 #else //_LP64 199 volatile jlong_accessor evl, cvl, rv; 200 evl.long_value = exchange_value; 201 cvl.long_value = compare_value; 202 203 __asm__ volatile( 204 " sllx %2, 32, %2\n\t" 205 " srl %3, 0, %3\n\t" 206 " or %2, %3, %2\n\t" 207 " sllx %5, 32, %5\n\t" 208 " srl %6, 0, %6\n\t" 209 " or %5, %6, %5\n\t" 210 " casx [%4], %5, %2\n\t" 211 " srl %2, 0, %1\n\t" 212 " srlx %2, 32, %0\n\t" 213 : "=r" (rv.words[0]), "=r" (rv.words[1]) 214 : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1]) 215 : "memory"); 216 217 return rv.long_value; 218 #endif //_LP64 219 } 220 221 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 222 intptr_t rv; 223 #ifdef _LP64 224 __asm__ volatile( 225 " casx [%2], %3, %0" 226 : "=r" (rv) 227 : "0" (exchange_value), "r" (dest), "r" (compare_value) 228 : "memory"); 229 #else //_LP64 230 __asm__ volatile( 231 " cas [%2], %3, %0" 232 : "=r" (rv) 233 : "0" (exchange_value), "r" (dest), "r" (compare_value) 234 : "memory"); 235 #endif // _LP64 236 return rv; 237 } 238 239 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 240 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order); 241 } 242 243 #else // _GNU_SOURCE 244 245 #if defined(COMPILER2) || defined(_LP64) 246 247 // This is the interface to the atomic instructions in solaris_sparc.il. 248 // It's very messy because we need to support v8 and these instructions 249 // are illegal there. When sparc v8 is dropped, we can drop out lots of 250 // this code. Also compiler2 does not support v8 so the conditional code 251 // omits the instruction set check. 252 253 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest); 254 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest); 255 256 extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value); 257 extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); 258 extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value); 259 260 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest); 261 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest); 262 263 264 inline jint Atomic::add (jint add_value, volatile jint* dest) { 265 return _Atomic_add32(add_value, dest); 266 } 267 268 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 269 #ifdef _LP64 270 return _Atomic_add64(add_value, dest); 271 #else //_LP64 272 return _Atomic_add32(add_value, dest); 273 #endif // _LP64 274 } 275 276 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 277 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 278 } 279 280 281 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 282 return _Atomic_swap32(exchange_value, dest); 283 } 284 285 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 286 #ifdef _LP64 287 return _Atomic_swap64(exchange_value, dest); 288 #else // _LP64 289 return _Atomic_swap32(exchange_value, dest); 290 #endif // _LP64 291 } 292 293 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 294 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 295 } 296 297 298 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 299 return _Atomic_cas32(exchange_value, dest, compare_value); 300 } 301 302 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 303 #ifdef _LP64 304 // Return 64 bit value in %o0 305 return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value); 306 #else // _LP64 307 // Return 64 bit value in %o0,%o1 by hand 308 return _Atomic_casl(exchange_value, dest, compare_value); 309 #endif // _LP64 310 } 311 312 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 313 #ifdef _LP64 314 return _Atomic_cas64(exchange_value, dest, compare_value); 315 #else // _LP64 316 return _Atomic_cas32(exchange_value, dest, compare_value); 317 #endif // _LP64 318 } 319 320 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 321 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order); 322 } 323 324 325 #else // _LP64 || COMPILER2 326 327 328 // 32-bit compiler1 only 329 330 inline jint Atomic::add (jint add_value, volatile jint* dest) { 331 return (*os::atomic_add_func)(add_value, dest); 332 } 333 334 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 335 return (intptr_t)add((jint)add_value, (volatile jint*)dest); 336 } 337 338 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 339 return (void*)add((jint)add_value, (volatile jint*)dest); 340 } 341 342 343 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 344 return (*os::atomic_xchg_func)(exchange_value, dest); 345 } 346 347 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 348 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); 349 } 350 351 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 352 return (void*)xchg((jint)exchange_value, (volatile jint*)dest); 353 } 354 355 356 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value, cmpxchg_memory_order order) { 357 return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value); 358 } 359 360 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value, cmpxchg_memory_order order) { 361 return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value); 362 } 363 364 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) { 365 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value, order); 366 } 367 368 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value, cmpxchg_memory_order order) { 369 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value, order); 370 } 371 372 #endif // _LP64 || COMPILER2 373 374 #endif // _GNU_SOURCE 375 376 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_HPP