1 /* 2 * Copyright (c) 1999, 2011, 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_INLINE_HPP 26 #define OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP 27 28 #include "orderAccess_solaris_sparc.inline.hpp" 29 #include "runtime/atomic.hpp" 30 #include "runtime/os.hpp" 31 #include "vm_version_sparc.hpp" 32 33 // Implementation of class atomic 34 35 inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; } 36 inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; } 37 inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; } 38 inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; } 39 inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; } 40 41 inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; } 42 inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; } 43 inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; } 44 inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; } 45 inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; } 46 47 inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); } 48 inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); } 49 inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); } 50 51 inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); } 52 inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); } 53 inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); } 54 55 56 #ifdef _LP64 57 58 inline void Atomic::store(jlong store_value, jlong* dest) { *dest = store_value; } 59 inline void Atomic::store(jlong store_value, volatile jlong* dest) { *dest = store_value; } 60 inline jlong Atomic::load(volatile jlong* src) { return *src; } 61 62 #else 63 64 extern "C" void _Atomic_move_long_v8(volatile jlong* src, volatile jlong* dst); 65 extern "C" void _Atomic_move_long_v9(volatile jlong* src, volatile jlong* dst); 66 67 inline void Atomic_move_long(volatile jlong* src, volatile jlong* dst) { 68 #ifdef COMPILER2 69 // Compiler2 does not support v8, it is used only for v9. 70 assert (VM_Version::v9_instructions_work(), "only supported on v9"); 71 _Atomic_move_long_v9(src, dst); 72 #else 73 // The branch is cheaper then emulated LDD. 74 if (VM_Version::v9_instructions_work()) { 75 _Atomic_move_long_v9(src, dst); 76 } else { 77 _Atomic_move_long_v8(src, dst); 78 } 79 #endif 80 } 81 82 inline jlong Atomic::load(volatile jlong* src) { 83 volatile jlong dest; 84 Atomic_move_long(src, &dest); 85 return dest; 86 } 87 88 inline void Atomic::store(jlong store_value, jlong* dest) { 89 Atomic_move_long((volatile jlong*)&store_value, (volatile jlong*)dest); 90 } 91 92 inline void Atomic::store(jlong store_value, volatile jlong* dest) { 93 Atomic_move_long((volatile jlong*)&store_value, dest); 94 } 95 96 #endif 97 98 #ifdef _GNU_SOURCE 99 100 inline jint Atomic::add (jint add_value, volatile jint* dest) { 101 intptr_t rv; 102 __asm__ volatile( 103 "1: \n\t" 104 " ld [%2], %%o2\n\t" 105 " add %1, %%o2, %%o3\n\t" 106 " cas [%2], %%o2, %%o3\n\t" 107 " cmp %%o2, %%o3\n\t" 108 " bne 1b\n\t" 109 " nop\n\t" 110 " add %1, %%o2, %0\n\t" 111 : "=r" (rv) 112 : "r" (add_value), "r" (dest) 113 : "memory", "o2", "o3"); 114 return rv; 115 } 116 117 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 118 intptr_t rv; 119 #ifdef _LP64 120 __asm__ volatile( 121 "1: \n\t" 122 " ldx [%2], %%o2\n\t" 123 " add %0, %%o2, %%o3\n\t" 124 " casx [%2], %%o2, %%o3\n\t" 125 " cmp %%o2, %%o3\n\t" 126 " bne %%xcc, 1b\n\t" 127 " nop\n\t" 128 " add %0, %%o2, %0\n\t" 129 : "=r" (rv) 130 : "r" (add_value), "r" (dest) 131 : "memory", "o2", "o3"); 132 #else //_LP64 133 __asm__ volatile( 134 "1: \n\t" 135 " ld [%2], %%o2\n\t" 136 " add %1, %%o2, %%o3\n\t" 137 " cas [%2], %%o2, %%o3\n\t" 138 " cmp %%o2, %%o3\n\t" 139 " bne 1b\n\t" 140 " nop\n\t" 141 " add %1, %%o2, %0\n\t" 142 : "=r" (rv) 143 : "r" (add_value), "r" (dest) 144 : "memory", "o2", "o3"); 145 #endif // _LP64 146 return rv; 147 } 148 149 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 150 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 151 } 152 153 154 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 155 intptr_t rv = exchange_value; 156 __asm__ volatile( 157 " swap [%2],%1\n\t" 158 : "=r" (rv) 159 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 160 : "memory"); 161 return rv; 162 } 163 164 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 165 intptr_t rv = exchange_value; 166 #ifdef _LP64 167 __asm__ volatile( 168 "1:\n\t" 169 " mov %1, %%o3\n\t" 170 " ldx [%2], %%o2\n\t" 171 " casx [%2], %%o2, %%o3\n\t" 172 " cmp %%o2, %%o3\n\t" 173 " bne %%xcc, 1b\n\t" 174 " nop\n\t" 175 " mov %%o2, %0\n\t" 176 : "=r" (rv) 177 : "r" (exchange_value), "r" (dest) 178 : "memory", "o2", "o3"); 179 #else //_LP64 180 __asm__ volatile( 181 "swap [%2],%1\n\t" 182 : "=r" (rv) 183 : "0" (exchange_value) /* we use same register as for return value */, "r" (dest) 184 : "memory"); 185 #endif // _LP64 186 return rv; 187 } 188 189 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 190 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 191 } 192 193 194 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { 195 jint rv; 196 __asm__ volatile( 197 " cas [%2], %3, %0" 198 : "=r" (rv) 199 : "0" (exchange_value), "r" (dest), "r" (compare_value) 200 : "memory"); 201 return rv; 202 } 203 204 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { 205 #ifdef _LP64 206 jlong rv; 207 __asm__ volatile( 208 " casx [%2], %3, %0" 209 : "=r" (rv) 210 : "0" (exchange_value), "r" (dest), "r" (compare_value) 211 : "memory"); 212 return rv; 213 #else //_LP64 214 assert(VM_Version::v9_instructions_work(), "cas only supported on v9"); 215 volatile jlong_accessor evl, cvl, rv; 216 evl.long_value = exchange_value; 217 cvl.long_value = compare_value; 218 219 __asm__ volatile( 220 " sllx %2, 32, %2\n\t" 221 " srl %3, 0, %3\n\t" 222 " or %2, %3, %2\n\t" 223 " sllx %5, 32, %5\n\t" 224 " srl %6, 0, %6\n\t" 225 " or %5, %6, %5\n\t" 226 " casx [%4], %5, %2\n\t" 227 " srl %2, 0, %1\n\t" 228 " srlx %2, 32, %0\n\t" 229 : "=r" (rv.words[0]), "=r" (rv.words[1]) 230 : "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1]) 231 : "memory"); 232 233 return rv.long_value; 234 #endif //_LP64 235 } 236 237 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { 238 intptr_t rv; 239 #ifdef _LP64 240 __asm__ volatile( 241 " casx [%2], %3, %0" 242 : "=r" (rv) 243 : "0" (exchange_value), "r" (dest), "r" (compare_value) 244 : "memory"); 245 #else //_LP64 246 __asm__ volatile( 247 " cas [%2], %3, %0" 248 : "=r" (rv) 249 : "0" (exchange_value), "r" (dest), "r" (compare_value) 250 : "memory"); 251 #endif // _LP64 252 return rv; 253 } 254 255 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { 256 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value); 257 } 258 259 #else // _GNU_SOURCE 260 261 #if defined(COMPILER2) || defined(_LP64) 262 263 // This is the interface to the atomic instructions in solaris_sparc.il. 264 // It's very messy because we need to support v8 and these instructions 265 // are illegal there. When sparc v8 is dropped, we can drop out lots of 266 // this code. Also compiler2 does not support v8 so the conditional code 267 // omits the instruction set check. 268 269 extern "C" jint _Atomic_swap32(jint exchange_value, volatile jint* dest); 270 extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest); 271 272 extern "C" jint _Atomic_cas32(jint exchange_value, volatile jint* dest, jint compare_value); 273 extern "C" intptr_t _Atomic_cas64(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value); 274 extern "C" jlong _Atomic_casl (jlong exchange_value, volatile jlong* dest, jlong compare_value); 275 276 extern "C" jint _Atomic_add32(jint inc, volatile jint* dest); 277 extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest); 278 279 280 inline jint Atomic::add (jint add_value, volatile jint* dest) { 281 return _Atomic_add32(add_value, dest); 282 } 283 284 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 285 #ifdef _LP64 286 return _Atomic_add64(add_value, dest); 287 #else //_LP64 288 return _Atomic_add32(add_value, dest); 289 #endif // _LP64 290 } 291 292 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 293 return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest); 294 } 295 296 297 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 298 return _Atomic_swap32(exchange_value, dest); 299 } 300 301 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 302 #ifdef _LP64 303 return _Atomic_swap64(exchange_value, dest); 304 #else // _LP64 305 return _Atomic_swap32(exchange_value, dest); 306 #endif // _LP64 307 } 308 309 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 310 return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest); 311 } 312 313 314 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { 315 return _Atomic_cas32(exchange_value, dest, compare_value); 316 } 317 318 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { 319 #ifdef _LP64 320 // Return 64 bit value in %o0 321 return _Atomic_cas64((intptr_t)exchange_value, (intptr_t *)dest, (intptr_t)compare_value); 322 #else // _LP64 323 assert (VM_Version::v9_instructions_work(), "only supported on v9"); 324 // Return 64 bit value in %o0,%o1 by hand 325 return _Atomic_casl(exchange_value, dest, compare_value); 326 #endif // _LP64 327 } 328 329 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { 330 #ifdef _LP64 331 return _Atomic_cas64(exchange_value, dest, compare_value); 332 #else // _LP64 333 return _Atomic_cas32(exchange_value, dest, compare_value); 334 #endif // _LP64 335 } 336 337 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { 338 return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value); 339 } 340 341 342 #else // _LP64 || COMPILER2 343 344 345 // 32-bit compiler1 only 346 347 inline jint Atomic::add (jint add_value, volatile jint* dest) { 348 return (*os::atomic_add_func)(add_value, dest); 349 } 350 351 inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) { 352 return (intptr_t)add((jint)add_value, (volatile jint*)dest); 353 } 354 355 inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) { 356 return (void*)add((jint)add_value, (volatile jint*)dest); 357 } 358 359 360 inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) { 361 return (*os::atomic_xchg_func)(exchange_value, dest); 362 } 363 364 inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) { 365 return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest); 366 } 367 368 inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) { 369 return (void*)xchg((jint)exchange_value, (volatile jint*)dest); 370 } 371 372 373 inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) { 374 return (*os::atomic_cmpxchg_func)(exchange_value, dest, compare_value); 375 } 376 377 inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) { 378 return (*os::atomic_cmpxchg_long_func)(exchange_value, dest, compare_value); 379 } 380 381 inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) { 382 return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); 383 } 384 385 inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) { 386 return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value); 387 } 388 389 #endif // _LP64 || COMPILER2 390 391 #endif // _GNU_SOURCE 392 393 #endif // OS_CPU_SOLARIS_SPARC_VM_ATOMIC_SOLARIS_SPARC_INLINE_HPP