1 /* 2 * Copyright (c) 1998, 2014, 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 #include "precompiled.hpp" 26 #include "classfile/systemDictionary.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "code/codeCache.hpp" 29 #include "code/compiledIC.hpp" 30 #include "code/icBuffer.hpp" 31 #include "code/nmethod.hpp" 32 #include "code/pcDesc.hpp" 33 #include "code/scopeDesc.hpp" 34 #include "code/vtableStubs.hpp" 35 #include "compiler/compileBroker.hpp" 36 #include "compiler/compilerOracle.hpp" 37 #include "compiler/oopMap.hpp" 38 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 39 #include "gc_implementation/g1/heapRegion.hpp" 40 #include "gc_interface/collectedHeap.hpp" 41 #include "interpreter/bytecode.hpp" 42 #include "interpreter/interpreter.hpp" 43 #include "interpreter/linkResolver.hpp" 44 #include "memory/barrierSet.hpp" 45 #include "memory/gcLocker.inline.hpp" 46 #include "memory/oopFactory.hpp" 47 #include "oops/objArrayKlass.hpp" 48 #include "oops/oop.inline.hpp" 49 #include "opto/ad.hpp" 50 #include "opto/addnode.hpp" 51 #include "opto/callnode.hpp" 52 #include "opto/cfgnode.hpp" 53 #include "opto/graphKit.hpp" 54 #include "opto/machnode.hpp" 55 #include "opto/matcher.hpp" 56 #include "opto/memnode.hpp" 57 #include "opto/mulnode.hpp" 58 #include "opto/runtime.hpp" 59 #include "opto/subnode.hpp" 60 #include "runtime/atomic.inline.hpp" 61 #include "runtime/fprofiler.hpp" 62 #include "runtime/handles.inline.hpp" 63 #include "runtime/interfaceSupport.hpp" 64 #include "runtime/javaCalls.hpp" 65 #include "runtime/sharedRuntime.hpp" 66 #include "runtime/signature.hpp" 67 #include "runtime/threadCritical.hpp" 68 #include "runtime/vframe.hpp" 69 #include "runtime/vframeArray.hpp" 70 #include "runtime/vframe_hp.hpp" 71 #include "utilities/copy.hpp" 72 #include "utilities/preserveException.hpp" 73 74 75 // For debugging purposes: 76 // To force FullGCALot inside a runtime function, add the following two lines 77 // 78 // Universe::release_fullgc_alot_dummy(); 79 // MarkSweep::invoke(0, "Debugging"); 80 // 81 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 82 83 84 85 86 // Compiled code entry points 87 address OptoRuntime::_new_instance_Java = NULL; 88 address OptoRuntime::_new_array_Java = NULL; 89 address OptoRuntime::_new_array_nozero_Java = NULL; 90 address OptoRuntime::_multianewarray2_Java = NULL; 91 address OptoRuntime::_multianewarray3_Java = NULL; 92 address OptoRuntime::_multianewarray4_Java = NULL; 93 address OptoRuntime::_multianewarray5_Java = NULL; 94 address OptoRuntime::_multianewarrayN_Java = NULL; 95 address OptoRuntime::_g1_wb_pre_Java = NULL; 96 address OptoRuntime::_g1_wb_post_Java = NULL; 97 address OptoRuntime::_vtable_must_compile_Java = NULL; 98 address OptoRuntime::_complete_monitor_locking_Java = NULL; 99 address OptoRuntime::_rethrow_Java = NULL; 100 101 address OptoRuntime::_slow_arraycopy_Java = NULL; 102 address OptoRuntime::_register_finalizer_Java = NULL; 103 104 # ifdef ENABLE_ZAP_DEAD_LOCALS 105 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 106 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 107 # endif 108 109 ExceptionBlob* OptoRuntime::_exception_blob; 110 111 // This should be called in an assertion at the start of OptoRuntime routines 112 // which are entered from compiled code (all of them) 113 #ifdef ASSERT 114 static bool check_compiled_frame(JavaThread* thread) { 115 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 116 RegisterMap map(thread, false); 117 frame caller = thread->last_frame().sender(&map); 118 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 119 return true; 120 } 121 #endif // ASSERT 122 123 124 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 125 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \ 126 if (var == NULL) { return false; } 127 128 bool OptoRuntime::generate(ciEnv* env) { 129 130 generate_exception_blob(); 131 132 // Note: tls: Means fetching the return oop out of the thread-local storage 133 // 134 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 135 // ------------------------------------------------------------------------------------------------------------------------------- 136 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 137 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 138 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); 139 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 140 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 141 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 142 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 143 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); 144 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 145 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 146 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false); 147 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 148 149 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 150 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 151 152 # ifdef ENABLE_ZAP_DEAD_LOCALS 153 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 154 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 155 # endif 156 return true; 157 } 158 159 #undef gen 160 161 162 // Helper method to do generation of RunTimeStub's 163 address OptoRuntime::generate_stub( ciEnv* env, 164 TypeFunc_generator gen, address C_function, 165 const char *name, int is_fancy_jump, 166 bool pass_tls, 167 bool save_argument_registers, 168 bool return_pc ) { 169 ResourceMark rm; 170 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 171 return C.stub_entry_point(); 172 } 173 174 const char* OptoRuntime::stub_name(address entry) { 175 #ifndef PRODUCT 176 CodeBlob* cb = CodeCache::find_blob(entry); 177 RuntimeStub* rs =(RuntimeStub *)cb; 178 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 179 return rs->name(); 180 #else 181 // Fast implementation for product mode (maybe it should be inlined too) 182 return "runtime stub"; 183 #endif 184 } 185 186 187 //============================================================================= 188 // Opto compiler runtime routines 189 //============================================================================= 190 191 192 //=============================allocation====================================== 193 // We failed the fast-path allocation. Now we need to do a scavenge or GC 194 // and try allocation again. 195 196 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 197 // After any safepoint, just before going back to compiled code, 198 // we inform the GC that we will be doing initializing writes to 199 // this object in the future without emitting card-marks, so 200 // GC may take any compensating steps. 201 // NOTE: Keep this code consistent with GraphKit::store_barrier. 202 203 oop new_obj = thread->vm_result(); 204 if (new_obj == NULL) return; 205 206 assert(Universe::heap()->can_elide_tlab_store_barriers(), 207 "compiler must check this first"); 208 // GC may decide to give back a safer copy of new_obj. 209 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 210 thread->set_vm_result(new_obj); 211 } 212 213 // object allocation 214 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread)) 215 JRT_BLOCK; 216 #ifndef PRODUCT 217 SharedRuntime::_new_instance_ctr++; // new instance requires GC 218 #endif 219 assert(check_compiled_frame(thread), "incorrect caller"); 220 221 // These checks are cheap to make and support reflective allocation. 222 int lh = klass->layout_helper(); 223 if (Klass::layout_helper_needs_slow_path(lh) 224 || !InstanceKlass::cast(klass)->is_initialized()) { 225 KlassHandle kh(THREAD, klass); 226 kh->check_valid_for_instantiation(false, THREAD); 227 if (!HAS_PENDING_EXCEPTION) { 228 InstanceKlass::cast(kh())->initialize(THREAD); 229 } 230 if (!HAS_PENDING_EXCEPTION) { 231 klass = kh(); 232 } else { 233 klass = NULL; 234 } 235 } 236 237 if (klass != NULL) { 238 // Scavenge and allocate an instance. 239 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD); 240 thread->set_vm_result(result); 241 242 // Pass oops back through thread local storage. Our apparent type to Java 243 // is that we return an oop, but we can block on exit from this routine and 244 // a GC can trash the oop in C's return register. The generated stub will 245 // fetch the oop from TLS after any possible GC. 246 } 247 248 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 249 JRT_BLOCK_END; 250 251 if (GraphKit::use_ReduceInitialCardMarks()) { 252 // inform GC that we won't do card marks for initializing writes. 253 new_store_pre_barrier(thread); 254 } 255 JRT_END 256 257 258 // array allocation 259 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread)) 260 JRT_BLOCK; 261 #ifndef PRODUCT 262 SharedRuntime::_new_array_ctr++; // new array requires GC 263 #endif 264 assert(check_compiled_frame(thread), "incorrect caller"); 265 266 // Scavenge and allocate an instance. 267 oop result; 268 269 if (array_type->oop_is_typeArray()) { 270 // The oopFactory likes to work with the element type. 271 // (We could bypass the oopFactory, since it doesn't add much value.) 272 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 273 result = oopFactory::new_typeArray(elem_type, len, THREAD); 274 } else { 275 // Although the oopFactory likes to work with the elem_type, 276 // the compiler prefers the array_type, since it must already have 277 // that latter value in hand for the fast path. 278 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass(); 279 result = oopFactory::new_objArray(elem_type, len, THREAD); 280 } 281 282 // Pass oops back through thread local storage. Our apparent type to Java 283 // is that we return an oop, but we can block on exit from this routine and 284 // a GC can trash the oop in C's return register. The generated stub will 285 // fetch the oop from TLS after any possible GC. 286 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 287 thread->set_vm_result(result); 288 JRT_BLOCK_END; 289 290 if (GraphKit::use_ReduceInitialCardMarks()) { 291 // inform GC that we won't do card marks for initializing writes. 292 new_store_pre_barrier(thread); 293 } 294 JRT_END 295 296 // array allocation without zeroing 297 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread)) 298 JRT_BLOCK; 299 #ifndef PRODUCT 300 SharedRuntime::_new_array_ctr++; // new array requires GC 301 #endif 302 assert(check_compiled_frame(thread), "incorrect caller"); 303 304 // Scavenge and allocate an instance. 305 oop result; 306 307 assert(array_type->oop_is_typeArray(), "should be called only for type array"); 308 // The oopFactory likes to work with the element type. 309 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 310 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); 311 312 // Pass oops back through thread local storage. Our apparent type to Java 313 // is that we return an oop, but we can block on exit from this routine and 314 // a GC can trash the oop in C's return register. The generated stub will 315 // fetch the oop from TLS after any possible GC. 316 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 317 thread->set_vm_result(result); 318 JRT_BLOCK_END; 319 320 if (GraphKit::use_ReduceInitialCardMarks()) { 321 // inform GC that we won't do card marks for initializing writes. 322 new_store_pre_barrier(thread); 323 } 324 325 oop result = thread->vm_result(); 326 if ((len > 0) && (result != NULL) && 327 is_deoptimized_caller_frame(thread)) { 328 // Zero array here if the caller is deoptimized. 329 int size = ((typeArrayOop)result)->object_size(); 330 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 331 const size_t hs = arrayOopDesc::header_size(elem_type); 332 // Align to next 8 bytes to avoid trashing arrays's length. 333 const size_t aligned_hs = align_object_offset(hs); 334 HeapWord* obj = (HeapWord*)result; 335 if (aligned_hs > hs) { 336 Copy::zero_to_words(obj+hs, aligned_hs-hs); 337 } 338 // Optimized zeroing. 339 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); 340 } 341 342 JRT_END 343 344 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 345 346 // multianewarray for 2 dimensions 347 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread)) 348 #ifndef PRODUCT 349 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 350 #endif 351 assert(check_compiled_frame(thread), "incorrect caller"); 352 assert(elem_type->is_klass(), "not a class"); 353 jint dims[2]; 354 dims[0] = len1; 355 dims[1] = len2; 356 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 357 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 358 thread->set_vm_result(obj); 359 JRT_END 360 361 // multianewarray for 3 dimensions 362 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread)) 363 #ifndef PRODUCT 364 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 365 #endif 366 assert(check_compiled_frame(thread), "incorrect caller"); 367 assert(elem_type->is_klass(), "not a class"); 368 jint dims[3]; 369 dims[0] = len1; 370 dims[1] = len2; 371 dims[2] = len3; 372 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 373 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 374 thread->set_vm_result(obj); 375 JRT_END 376 377 // multianewarray for 4 dimensions 378 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 379 #ifndef PRODUCT 380 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 381 #endif 382 assert(check_compiled_frame(thread), "incorrect caller"); 383 assert(elem_type->is_klass(), "not a class"); 384 jint dims[4]; 385 dims[0] = len1; 386 dims[1] = len2; 387 dims[2] = len3; 388 dims[3] = len4; 389 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 390 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 391 thread->set_vm_result(obj); 392 JRT_END 393 394 // multianewarray for 5 dimensions 395 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 396 #ifndef PRODUCT 397 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 398 #endif 399 assert(check_compiled_frame(thread), "incorrect caller"); 400 assert(elem_type->is_klass(), "not a class"); 401 jint dims[5]; 402 dims[0] = len1; 403 dims[1] = len2; 404 dims[2] = len3; 405 dims[3] = len4; 406 dims[4] = len5; 407 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 408 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 409 thread->set_vm_result(obj); 410 JRT_END 411 412 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread)) 413 assert(check_compiled_frame(thread), "incorrect caller"); 414 assert(elem_type->is_klass(), "not a class"); 415 assert(oop(dims)->is_typeArray(), "not an array"); 416 417 ResourceMark rm; 418 jint len = dims->length(); 419 assert(len > 0, "Dimensions array should contain data"); 420 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); 421 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); 422 Copy::conjoint_jints_atomic(j_dims, c_dims, len); 423 424 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); 425 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 426 thread->set_vm_result(obj); 427 JRT_END 428 429 430 const TypeFunc *OptoRuntime::new_instance_Type() { 431 // create input type (domain) 432 const Type **fields = TypeTuple::fields(1); 433 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 434 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 435 436 // create result type (range) 437 fields = TypeTuple::fields(1); 438 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 439 440 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 441 442 return TypeFunc::make(domain, range); 443 } 444 445 446 const TypeFunc *OptoRuntime::athrow_Type() { 447 // create input type (domain) 448 const Type **fields = TypeTuple::fields(1); 449 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 450 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 451 452 // create result type (range) 453 fields = TypeTuple::fields(0); 454 455 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 456 457 return TypeFunc::make(domain, range); 458 } 459 460 461 const TypeFunc *OptoRuntime::new_array_Type() { 462 // create input type (domain) 463 const Type **fields = TypeTuple::fields(2); 464 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 465 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 466 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 467 468 // create result type (range) 469 fields = TypeTuple::fields(1); 470 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 471 472 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 473 474 return TypeFunc::make(domain, range); 475 } 476 477 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 478 // create input type (domain) 479 const int nargs = ndim + 1; 480 const Type **fields = TypeTuple::fields(nargs); 481 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 482 for( int i = 1; i < nargs; i++ ) 483 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 484 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 485 486 // create result type (range) 487 fields = TypeTuple::fields(1); 488 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 489 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 490 491 return TypeFunc::make(domain, range); 492 } 493 494 const TypeFunc *OptoRuntime::multianewarray2_Type() { 495 return multianewarray_Type(2); 496 } 497 498 const TypeFunc *OptoRuntime::multianewarray3_Type() { 499 return multianewarray_Type(3); 500 } 501 502 const TypeFunc *OptoRuntime::multianewarray4_Type() { 503 return multianewarray_Type(4); 504 } 505 506 const TypeFunc *OptoRuntime::multianewarray5_Type() { 507 return multianewarray_Type(5); 508 } 509 510 const TypeFunc *OptoRuntime::multianewarrayN_Type() { 511 // create input type (domain) 512 const Type **fields = TypeTuple::fields(2); 513 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 514 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes 515 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 516 517 // create result type (range) 518 fields = TypeTuple::fields(1); 519 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 520 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 521 522 return TypeFunc::make(domain, range); 523 } 524 525 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 526 const Type **fields = TypeTuple::fields(2); 527 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 528 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 529 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 530 531 // create result type (range) 532 fields = TypeTuple::fields(0); 533 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 534 535 return TypeFunc::make(domain, range); 536 } 537 538 const TypeFunc *OptoRuntime::g1_wb_post_Type() { 539 540 const Type **fields = TypeTuple::fields(2); 541 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 542 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 543 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 544 545 // create result type (range) 546 fields = TypeTuple::fields(0); 547 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 548 549 return TypeFunc::make(domain, range); 550 } 551 552 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 553 // create input type (domain) 554 const Type **fields = TypeTuple::fields(1); 555 fields[TypeFunc::Parms+0] = TypeInt::INT; // trap_reason (deopt reason and action) 556 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 557 558 // create result type (range) 559 fields = TypeTuple::fields(0); 560 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 561 562 return TypeFunc::make(domain, range); 563 } 564 565 # ifdef ENABLE_ZAP_DEAD_LOCALS 566 // Type used for stub generation for zap_dead_locals. 567 // No inputs or outputs 568 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 569 // create input type (domain) 570 const Type **fields = TypeTuple::fields(0); 571 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 572 573 // create result type (range) 574 fields = TypeTuple::fields(0); 575 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 576 577 return TypeFunc::make(domain,range); 578 } 579 # endif 580 581 582 //----------------------------------------------------------------------------- 583 // Monitor Handling 584 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 585 // create input type (domain) 586 const Type **fields = TypeTuple::fields(2); 587 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 588 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 590 591 // create result type (range) 592 fields = TypeTuple::fields(0); 593 594 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 595 596 return TypeFunc::make(domain,range); 597 } 598 599 600 //----------------------------------------------------------------------------- 601 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 602 // create input type (domain) 603 const Type **fields = TypeTuple::fields(2); 604 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 605 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 606 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 607 608 // create result type (range) 609 fields = TypeTuple::fields(0); 610 611 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 612 613 return TypeFunc::make(domain,range); 614 } 615 616 const TypeFunc* OptoRuntime::flush_windows_Type() { 617 // create input type (domain) 618 const Type** fields = TypeTuple::fields(1); 619 fields[TypeFunc::Parms+0] = NULL; // void 620 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 621 622 // create result type 623 fields = TypeTuple::fields(1); 624 fields[TypeFunc::Parms+0] = NULL; // void 625 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 626 627 return TypeFunc::make(domain, range); 628 } 629 630 const TypeFunc* OptoRuntime::l2f_Type() { 631 // create input type (domain) 632 const Type **fields = TypeTuple::fields(2); 633 fields[TypeFunc::Parms+0] = TypeLong::LONG; 634 fields[TypeFunc::Parms+1] = Type::HALF; 635 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 636 637 // create result type (range) 638 fields = TypeTuple::fields(1); 639 fields[TypeFunc::Parms+0] = Type::FLOAT; 640 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 641 642 return TypeFunc::make(domain, range); 643 } 644 645 const TypeFunc* OptoRuntime::modf_Type() { 646 const Type **fields = TypeTuple::fields(2); 647 fields[TypeFunc::Parms+0] = Type::FLOAT; 648 fields[TypeFunc::Parms+1] = Type::FLOAT; 649 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 650 651 // create result type (range) 652 fields = TypeTuple::fields(1); 653 fields[TypeFunc::Parms+0] = Type::FLOAT; 654 655 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 656 657 return TypeFunc::make(domain, range); 658 } 659 660 const TypeFunc *OptoRuntime::Math_D_D_Type() { 661 // create input type (domain) 662 const Type **fields = TypeTuple::fields(2); 663 // Symbol* name of class to be loaded 664 fields[TypeFunc::Parms+0] = Type::DOUBLE; 665 fields[TypeFunc::Parms+1] = Type::HALF; 666 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 667 668 // create result type (range) 669 fields = TypeTuple::fields(2); 670 fields[TypeFunc::Parms+0] = Type::DOUBLE; 671 fields[TypeFunc::Parms+1] = Type::HALF; 672 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 673 674 return TypeFunc::make(domain, range); 675 } 676 677 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 678 const Type **fields = TypeTuple::fields(4); 679 fields[TypeFunc::Parms+0] = Type::DOUBLE; 680 fields[TypeFunc::Parms+1] = Type::HALF; 681 fields[TypeFunc::Parms+2] = Type::DOUBLE; 682 fields[TypeFunc::Parms+3] = Type::HALF; 683 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 684 685 // create result type (range) 686 fields = TypeTuple::fields(2); 687 fields[TypeFunc::Parms+0] = Type::DOUBLE; 688 fields[TypeFunc::Parms+1] = Type::HALF; 689 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 690 691 return TypeFunc::make(domain, range); 692 } 693 694 //-------------- currentTimeMillis, currentTimeNanos, etc 695 696 const TypeFunc* OptoRuntime::void_long_Type() { 697 // create input type (domain) 698 const Type **fields = TypeTuple::fields(0); 699 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 700 701 // create result type (range) 702 fields = TypeTuple::fields(2); 703 fields[TypeFunc::Parms+0] = TypeLong::LONG; 704 fields[TypeFunc::Parms+1] = Type::HALF; 705 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 706 707 return TypeFunc::make(domain, range); 708 } 709 710 // arraycopy stub variations: 711 enum ArrayCopyType { 712 ac_fast, // void(ptr, ptr, size_t) 713 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 714 ac_slow, // void(ptr, int, ptr, int, int) 715 ac_generic // int(ptr, int, ptr, int, int) 716 }; 717 718 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 719 // create input type (domain) 720 int num_args = (act == ac_fast ? 3 : 5); 721 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 722 int argcnt = num_args; 723 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 724 const Type** fields = TypeTuple::fields(argcnt); 725 int argp = TypeFunc::Parms; 726 fields[argp++] = TypePtr::NOTNULL; // src 727 if (num_size_args == 0) { 728 fields[argp++] = TypeInt::INT; // src_pos 729 } 730 fields[argp++] = TypePtr::NOTNULL; // dest 731 if (num_size_args == 0) { 732 fields[argp++] = TypeInt::INT; // dest_pos 733 fields[argp++] = TypeInt::INT; // length 734 } 735 while (num_size_args-- > 0) { 736 fields[argp++] = TypeX_X; // size in whatevers (size_t) 737 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 738 } 739 if (act == ac_checkcast) { 740 fields[argp++] = TypePtr::NOTNULL; // super_klass 741 } 742 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 743 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 744 745 // create result type if needed 746 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 747 fields = TypeTuple::fields(1); 748 if (retcnt == 0) 749 fields[TypeFunc::Parms+0] = NULL; // void 750 else 751 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 752 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 753 return TypeFunc::make(domain, range); 754 } 755 756 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 757 // This signature is simple: Two base pointers and a size_t. 758 return make_arraycopy_Type(ac_fast); 759 } 760 761 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 762 // An extension of fast_arraycopy_Type which adds type checking. 763 return make_arraycopy_Type(ac_checkcast); 764 } 765 766 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 767 // This signature is exactly the same as System.arraycopy. 768 // There are no intptr_t (int/long) arguments. 769 return make_arraycopy_Type(ac_slow); 770 } 771 772 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 773 // This signature is like System.arraycopy, except that it returns status. 774 return make_arraycopy_Type(ac_generic); 775 } 776 777 778 const TypeFunc* OptoRuntime::array_fill_Type() { 779 const Type** fields; 780 int argp = TypeFunc::Parms; 781 if (CCallingConventionRequiresIntsAsLongs) { 782 // create input type (domain): pointer, int, size_t 783 fields = TypeTuple::fields(3 LP64_ONLY( + 2)); 784 fields[argp++] = TypePtr::NOTNULL; 785 fields[argp++] = TypeLong::LONG; 786 fields[argp++] = Type::HALF; 787 } else { 788 // create input type (domain): pointer, int, size_t 789 fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 790 fields[argp++] = TypePtr::NOTNULL; 791 fields[argp++] = TypeInt::INT; 792 } 793 fields[argp++] = TypeX_X; // size in whatevers (size_t) 794 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 795 const TypeTuple *domain = TypeTuple::make(argp, fields); 796 797 // create result type 798 fields = TypeTuple::fields(1); 799 fields[TypeFunc::Parms+0] = NULL; // void 800 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 801 802 return TypeFunc::make(domain, range); 803 } 804 805 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant) 806 const TypeFunc* OptoRuntime::aescrypt_block_Type() { 807 // create input type (domain) 808 int num_args = 3; 809 if (Matcher::pass_original_key_for_aes()) { 810 num_args = 4; 811 } 812 int argcnt = num_args; 813 const Type** fields = TypeTuple::fields(argcnt); 814 int argp = TypeFunc::Parms; 815 fields[argp++] = TypePtr::NOTNULL; // src 816 fields[argp++] = TypePtr::NOTNULL; // dest 817 fields[argp++] = TypePtr::NOTNULL; // k array 818 if (Matcher::pass_original_key_for_aes()) { 819 fields[argp++] = TypePtr::NOTNULL; // original k array 820 } 821 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 822 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 823 824 // no result type needed 825 fields = TypeTuple::fields(1); 826 fields[TypeFunc::Parms+0] = NULL; // void 827 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 828 return TypeFunc::make(domain, range); 829 } 830 831 /** 832 * int updateBytesCRC32(int crc, byte* b, int len) 833 */ 834 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() { 835 // create input type (domain) 836 int num_args = 3; 837 int argcnt = num_args; 838 const Type** fields = TypeTuple::fields(argcnt); 839 int argp = TypeFunc::Parms; 840 fields[argp++] = TypeInt::INT; // crc 841 fields[argp++] = TypePtr::NOTNULL; // src 842 fields[argp++] = TypeInt::INT; // len 843 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 844 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 845 846 // result type needed 847 fields = TypeTuple::fields(1); 848 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 849 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 850 return TypeFunc::make(domain, range); 851 } 852 853 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int 854 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 855 // create input type (domain) 856 int num_args = 5; 857 if (Matcher::pass_original_key_for_aes()) { 858 num_args = 6; 859 } 860 int argcnt = num_args; 861 const Type** fields = TypeTuple::fields(argcnt); 862 int argp = TypeFunc::Parms; 863 fields[argp++] = TypePtr::NOTNULL; // src 864 fields[argp++] = TypePtr::NOTNULL; // dest 865 fields[argp++] = TypePtr::NOTNULL; // k array 866 fields[argp++] = TypePtr::NOTNULL; // r array 867 fields[argp++] = TypeInt::INT; // src len 868 if (Matcher::pass_original_key_for_aes()) { 869 fields[argp++] = TypePtr::NOTNULL; // original k array 870 } 871 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 872 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 873 874 // returning cipher len (int) 875 fields = TypeTuple::fields(1); 876 fields[TypeFunc::Parms+0] = TypeInt::INT; 877 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 878 return TypeFunc::make(domain, range); 879 } 880 881 /* 882 * void implCompress(byte[] buf, int ofs) 883 */ 884 const TypeFunc* OptoRuntime::sha_implCompress_Type() { 885 // create input type (domain) 886 int num_args = 2; 887 int argcnt = num_args; 888 const Type** fields = TypeTuple::fields(argcnt); 889 int argp = TypeFunc::Parms; 890 fields[argp++] = TypePtr::NOTNULL; // buf 891 fields[argp++] = TypePtr::NOTNULL; // state 892 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 893 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 894 895 // no result type needed 896 fields = TypeTuple::fields(1); 897 fields[TypeFunc::Parms+0] = NULL; // void 898 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 899 return TypeFunc::make(domain, range); 900 } 901 902 /* 903 * int implCompressMultiBlock(byte[] b, int ofs, int limit) 904 */ 905 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() { 906 // create input type (domain) 907 int num_args = 4; 908 int argcnt = num_args; 909 const Type** fields = TypeTuple::fields(argcnt); 910 int argp = TypeFunc::Parms; 911 fields[argp++] = TypePtr::NOTNULL; // buf 912 fields[argp++] = TypePtr::NOTNULL; // state 913 fields[argp++] = TypeInt::INT; // ofs 914 fields[argp++] = TypeInt::INT; // limit 915 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 916 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 917 918 // returning ofs (int) 919 fields = TypeTuple::fields(1); 920 fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs 921 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 922 return TypeFunc::make(domain, range); 923 } 924 925 //------------- Interpreter state access for on stack replacement 926 const TypeFunc* OptoRuntime::osr_end_Type() { 927 // create input type (domain) 928 const Type **fields = TypeTuple::fields(1); 929 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 930 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 931 932 // create result type 933 fields = TypeTuple::fields(1); 934 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 935 fields[TypeFunc::Parms+0] = NULL; // void 936 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 937 return TypeFunc::make(domain, range); 938 } 939 940 //-------------- methodData update helpers 941 942 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 943 // create input type (domain) 944 const Type **fields = TypeTuple::fields(2); 945 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 946 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 947 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 948 949 // create result type 950 fields = TypeTuple::fields(1); 951 fields[TypeFunc::Parms+0] = NULL; // void 952 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 953 return TypeFunc::make(domain,range); 954 } 955 956 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 957 if (receiver == NULL) return; 958 Klass* receiver_klass = receiver->klass(); 959 960 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 961 int empty_row = -1; // free row, if any is encountered 962 963 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 964 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 965 // if (vc->receiver(row) == receiver_klass) 966 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 967 intptr_t row_recv = *(mdp + receiver_off); 968 if (row_recv == (intptr_t) receiver_klass) { 969 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 970 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 971 *(mdp + count_off) += DataLayout::counter_increment; 972 return; 973 } else if (row_recv == 0) { 974 // else if (vc->receiver(row) == NULL) 975 empty_row = (int) row; 976 } 977 } 978 979 if (empty_row != -1) { 980 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 981 // vc->set_receiver(empty_row, receiver_klass); 982 *(mdp + receiver_off) = (intptr_t) receiver_klass; 983 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 984 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 985 *(mdp + count_off) = DataLayout::counter_increment; 986 } else { 987 // Receiver did not match any saved receiver and there is no empty row for it. 988 // Increment total counter to indicate polymorphic case. 989 intptr_t* count_p = (intptr_t*)(((uint8_t*)(data)) + in_bytes(CounterData::count_offset())); 990 *count_p += DataLayout::counter_increment; 991 } 992 JRT_END 993 994 //------------------------------------------------------------------------------------- 995 // register policy 996 997 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 998 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 999 switch (register_save_policy[reg]) { 1000 case 'C': return false; //SOC 1001 case 'E': return true ; //SOE 1002 case 'N': return false; //NS 1003 case 'A': return false; //AS 1004 } 1005 ShouldNotReachHere(); 1006 return false; 1007 } 1008 1009 //----------------------------------------------------------------------- 1010 // Exceptions 1011 // 1012 1013 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 1014 1015 // The method is an entry that is always called by a C++ method not 1016 // directly from compiled code. Compiled code will call the C++ method following. 1017 // We can't allow async exception to be installed during exception processing. 1018 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 1019 1020 // Do not confuse exception_oop with pending_exception. The exception_oop 1021 // is only used to pass arguments into the method. Not for general 1022 // exception handling. DO NOT CHANGE IT to use pending_exception, since 1023 // the runtime stubs checks this on exit. 1024 assert(thread->exception_oop() != NULL, "exception oop is found"); 1025 address handler_address = NULL; 1026 1027 Handle exception(thread, thread->exception_oop()); 1028 address pc = thread->exception_pc(); 1029 1030 // Clear out the exception oop and pc since looking up an 1031 // exception handler can cause class loading, which might throw an 1032 // exception and those fields are expected to be clear during 1033 // normal bytecode execution. 1034 thread->clear_exception_oop_and_pc(); 1035 1036 if (TraceExceptions) { 1037 trace_exception(exception(), pc, ""); 1038 } 1039 1040 // for AbortVMOnException flag 1041 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 1042 1043 #ifdef ASSERT 1044 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1045 // should throw an exception here 1046 ShouldNotReachHere(); 1047 } 1048 #endif 1049 1050 // new exception handling: this method is entered only from adapters 1051 // exceptions from compiled java methods are handled in compiled code 1052 // using rethrow node 1053 1054 nm = CodeCache::find_nmethod(pc); 1055 assert(nm != NULL, "No NMethod found"); 1056 if (nm->is_native_method()) { 1057 fatal("Native method should not have path to exception handling"); 1058 } else { 1059 // we are switching to old paradigm: search for exception handler in caller_frame 1060 // instead in exception handler of caller_frame.sender() 1061 1062 if (JvmtiExport::can_post_on_exceptions()) { 1063 // "Full-speed catching" is not necessary here, 1064 // since we're notifying the VM on every catch. 1065 // Force deoptimization and the rest of the lookup 1066 // will be fine. 1067 deoptimize_caller_frame(thread); 1068 } 1069 1070 // Check the stack guard pages. If enabled, look for handler in this frame; 1071 // otherwise, forcibly unwind the frame. 1072 // 1073 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1074 bool force_unwind = !thread->reguard_stack(); 1075 bool deopting = false; 1076 if (nm->is_deopt_pc(pc)) { 1077 deopting = true; 1078 RegisterMap map(thread, false); 1079 frame deoptee = thread->last_frame().sender(&map); 1080 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1081 // Adjust the pc back to the original throwing pc 1082 pc = deoptee.pc(); 1083 } 1084 1085 // If we are forcing an unwind because of stack overflow then deopt is 1086 // irrelevant since we are throwing the frame away anyway. 1087 1088 if (deopting && !force_unwind) { 1089 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1090 } else { 1091 1092 handler_address = 1093 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1094 1095 if (handler_address == NULL) { 1096 Handle original_exception(thread, exception()); 1097 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1098 assert (handler_address != NULL, "must have compiled handler"); 1099 // Update the exception cache only when the unwind was not forced 1100 // and there didn't happen another exception during the computation of the 1101 // compiled exception handler. 1102 if (!force_unwind && original_exception() == exception()) { 1103 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1104 } 1105 } else { 1106 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1107 } 1108 } 1109 1110 thread->set_exception_pc(pc); 1111 thread->set_exception_handler_pc(handler_address); 1112 1113 // Check if the exception PC is a MethodHandle call site. 1114 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1115 } 1116 1117 // Restore correct return pc. Was saved above. 1118 thread->set_exception_oop(exception()); 1119 return handler_address; 1120 1121 JRT_END 1122 1123 // We are entering here from exception_blob 1124 // If there is a compiled exception handler in this method, we will continue there; 1125 // otherwise we will unwind the stack and continue at the caller of top frame method 1126 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1127 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1128 // we looked up the handler for has been deoptimized in the meantime. If it has been 1129 // we must not use the handler and instead return the deopt blob. 1130 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1131 // 1132 // We are in Java not VM and in debug mode we have a NoHandleMark 1133 // 1134 #ifndef PRODUCT 1135 SharedRuntime::_find_handler_ctr++; // find exception handler 1136 #endif 1137 debug_only(NoHandleMark __hm;) 1138 nmethod* nm = NULL; 1139 address handler_address = NULL; 1140 { 1141 // Enter the VM 1142 1143 ResetNoHandleMark rnhm; 1144 handler_address = handle_exception_C_helper(thread, nm); 1145 } 1146 1147 // Back in java: Use no oops, DON'T safepoint 1148 1149 // Now check to see if the handler we are returning is in a now 1150 // deoptimized frame 1151 1152 if (nm != NULL) { 1153 RegisterMap map(thread, false); 1154 frame caller = thread->last_frame().sender(&map); 1155 #ifdef ASSERT 1156 assert(caller.is_compiled_frame(), "must be"); 1157 #endif // ASSERT 1158 if (caller.is_deoptimized_frame()) { 1159 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1160 } 1161 } 1162 return handler_address; 1163 } 1164 1165 //------------------------------rethrow---------------------------------------- 1166 // We get here after compiled code has executed a 'RethrowNode'. The callee 1167 // is either throwing or rethrowing an exception. The callee-save registers 1168 // have been restored, synchronized objects have been unlocked and the callee 1169 // stack frame has been removed. The return address was passed in. 1170 // Exception oop is passed as the 1st argument. This routine is then called 1171 // from the stub. On exit, we know where to jump in the caller's code. 1172 // After this C code exits, the stub will pop his frame and end in a jump 1173 // (instead of a return). We enter the caller's default handler. 1174 // 1175 // This must be JRT_LEAF: 1176 // - caller will not change its state as we cannot block on exit, 1177 // therefore raw_exception_handler_for_return_address is all it takes 1178 // to handle deoptimized blobs 1179 // 1180 // However, there needs to be a safepoint check in the middle! So compiled 1181 // safepoints are completely watertight. 1182 // 1183 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1184 // 1185 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1186 // 1187 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1188 #ifndef PRODUCT 1189 SharedRuntime::_rethrow_ctr++; // count rethrows 1190 #endif 1191 assert (exception != NULL, "should have thrown a NULLPointerException"); 1192 #ifdef ASSERT 1193 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1194 // should throw an exception here 1195 ShouldNotReachHere(); 1196 } 1197 #endif 1198 1199 thread->set_vm_result(exception); 1200 // Frame not compiled (handles deoptimization blob) 1201 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1202 } 1203 1204 1205 const TypeFunc *OptoRuntime::rethrow_Type() { 1206 // create input type (domain) 1207 const Type **fields = TypeTuple::fields(1); 1208 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1209 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1210 1211 // create result type (range) 1212 fields = TypeTuple::fields(1); 1213 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1214 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1215 1216 return TypeFunc::make(domain, range); 1217 } 1218 1219 1220 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1221 // Deoptimize the caller before continuing, as the compiled 1222 // exception handler table may not be valid. 1223 if (!StressCompiledExceptionHandlers && doit) { 1224 deoptimize_caller_frame(thread); 1225 } 1226 } 1227 1228 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1229 // Called from within the owner thread, so no need for safepoint 1230 RegisterMap reg_map(thread); 1231 frame stub_frame = thread->last_frame(); 1232 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1233 frame caller_frame = stub_frame.sender(®_map); 1234 1235 // Deoptimize the caller frame. 1236 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1237 } 1238 1239 1240 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1241 // Called from within the owner thread, so no need for safepoint 1242 RegisterMap reg_map(thread); 1243 frame stub_frame = thread->last_frame(); 1244 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1245 frame caller_frame = stub_frame.sender(®_map); 1246 return caller_frame.is_deoptimized_frame(); 1247 } 1248 1249 1250 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1251 // create input type (domain) 1252 const Type **fields = TypeTuple::fields(1); 1253 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1254 // // The JavaThread* is passed to each routine as the last argument 1255 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1256 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1257 1258 // create result type (range) 1259 fields = TypeTuple::fields(0); 1260 1261 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1262 1263 return TypeFunc::make(domain,range); 1264 } 1265 1266 1267 //----------------------------------------------------------------------------- 1268 // Dtrace support. entry and exit probes have the same signature 1269 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1270 // create input type (domain) 1271 const Type **fields = TypeTuple::fields(2); 1272 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1273 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1274 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1275 1276 // create result type (range) 1277 fields = TypeTuple::fields(0); 1278 1279 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1280 1281 return TypeFunc::make(domain,range); 1282 } 1283 1284 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1285 // create input type (domain) 1286 const Type **fields = TypeTuple::fields(2); 1287 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1288 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1289 1290 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1291 1292 // create result type (range) 1293 fields = TypeTuple::fields(0); 1294 1295 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1296 1297 return TypeFunc::make(domain,range); 1298 } 1299 1300 1301 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1302 assert(obj->is_oop(), "must be a valid oop"); 1303 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1304 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1305 JRT_END 1306 1307 //----------------------------------------------------------------------------- 1308 1309 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1310 1311 // 1312 // dump the collected NamedCounters. 1313 // 1314 void OptoRuntime::print_named_counters() { 1315 int total_lock_count = 0; 1316 int eliminated_lock_count = 0; 1317 1318 NamedCounter* c = _named_counters; 1319 while (c) { 1320 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1321 int count = c->count(); 1322 if (count > 0) { 1323 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1324 if (Verbose) { 1325 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1326 } 1327 total_lock_count += count; 1328 if (eliminated) { 1329 eliminated_lock_count += count; 1330 } 1331 } 1332 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1333 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1334 if (blc->nonzero()) { 1335 tty->print_cr("%s", c->name()); 1336 blc->print_on(tty); 1337 } 1338 #if INCLUDE_RTM_OPT 1339 } else if (c->tag() == NamedCounter::RTMLockingCounter) { 1340 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters(); 1341 if (rlc->nonzero()) { 1342 tty->print_cr("%s", c->name()); 1343 rlc->print_on(tty); 1344 } 1345 #endif 1346 } 1347 c = c->next(); 1348 } 1349 if (total_lock_count > 0) { 1350 tty->print_cr("dynamic locks: %d", total_lock_count); 1351 if (eliminated_lock_count) { 1352 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1353 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1354 } 1355 } 1356 } 1357 1358 // 1359 // Allocate a new NamedCounter. The JVMState is used to generate the 1360 // name which consists of method@line for the inlining tree. 1361 // 1362 1363 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1364 int max_depth = youngest_jvms->depth(); 1365 1366 // Visit scopes from youngest to oldest. 1367 bool first = true; 1368 stringStream st; 1369 for (int depth = max_depth; depth >= 1; depth--) { 1370 JVMState* jvms = youngest_jvms->of_depth(depth); 1371 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1372 if (!first) { 1373 st.print(" "); 1374 } else { 1375 first = false; 1376 } 1377 int bci = jvms->bci(); 1378 if (bci < 0) bci = 0; 1379 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1380 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1381 } 1382 NamedCounter* c; 1383 if (tag == NamedCounter::BiasedLockingCounter) { 1384 c = new BiasedLockingNamedCounter(st.as_string()); 1385 } else if (tag == NamedCounter::RTMLockingCounter) { 1386 c = new RTMLockingNamedCounter(st.as_string()); 1387 } else { 1388 c = new NamedCounter(st.as_string(), tag); 1389 } 1390 1391 // atomically add the new counter to the head of the list. We only 1392 // add counters so this is safe. 1393 NamedCounter* head; 1394 do { 1395 c->set_next(NULL); 1396 head = _named_counters; 1397 c->set_next(head); 1398 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1399 return c; 1400 } 1401 1402 //----------------------------------------------------------------------------- 1403 // Non-product code 1404 #ifndef PRODUCT 1405 1406 int trace_exception_counter = 0; 1407 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1408 ttyLocker ttyl; 1409 trace_exception_counter++; 1410 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1411 exception_oop->print_value(); 1412 tty->print(" in "); 1413 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1414 if (blob->is_nmethod()) { 1415 nmethod* nm = blob->as_nmethod_or_null(); 1416 nm->method()->print_value(); 1417 } else if (blob->is_runtime_stub()) { 1418 tty->print("<runtime-stub>"); 1419 } else { 1420 tty->print("<unknown>"); 1421 } 1422 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc)); 1423 tty->print_cr("]"); 1424 } 1425 1426 #endif // PRODUCT 1427 1428 1429 # ifdef ENABLE_ZAP_DEAD_LOCALS 1430 // Called from call sites in compiled code with oop maps (actually safepoints) 1431 // Zaps dead locals in first java frame. 1432 // Is entry because may need to lock to generate oop maps 1433 // Currently, only used for compiler frames, but someday may be used 1434 // for interpreter frames, too. 1435 1436 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1437 1438 // avoid pointers to member funcs with these helpers 1439 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1440 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1441 1442 1443 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1444 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1445 assert(JavaThread::current() == thread, "is this needed?"); 1446 1447 if ( !ZapDeadCompiledLocals ) return; 1448 1449 bool skip = false; 1450 1451 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1452 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1453 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1454 warning("starting zapping after skipping"); 1455 1456 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1457 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1458 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1459 warning("about to zap last zap"); 1460 1461 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1462 1463 if ( skip ) return; 1464 1465 // find java frame and zap it 1466 1467 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1468 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1469 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1470 return; 1471 } 1472 } 1473 warning("no frame found to zap in zap_dead_Java_locals_C"); 1474 } 1475 1476 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1477 zap_dead_java_or_native_locals(thread, is_java_frame); 1478 JRT_END 1479 1480 // The following does not work because for one thing, the 1481 // thread state is wrong; it expects java, but it is native. 1482 // Also, the invariants in a native stub are different and 1483 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1484 // in there. 1485 // So for now, we do not zap in native stubs. 1486 1487 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1488 zap_dead_java_or_native_locals(thread, is_native_frame); 1489 JRT_END 1490 1491 # endif