1 /* 2 * Copyright (c) 1998, 2015, 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/compiledIC.hpp" 29 #include "code/icBuffer.hpp" 30 #include "code/nmethod.hpp" 31 #include "code/pcDesc.hpp" 32 #include "code/scopeDesc.hpp" 33 #include "code/vtableStubs.hpp" 34 #include "compiler/compileBroker.hpp" 35 #include "compiler/compilerOracle.hpp" 36 #include "compiler/oopMap.hpp" 37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 38 #include "gc_implementation/g1/heapRegion.hpp" 39 #include "gc_interface/collectedHeap.hpp" 40 #include "interpreter/bytecode.hpp" 41 #include "interpreter/interpreter.hpp" 42 #include "interpreter/linkResolver.hpp" 43 #include "memory/barrierSet.hpp" 44 #include "memory/gcLocker.inline.hpp" 45 #include "memory/oopFactory.hpp" 46 #include "oops/objArrayKlass.hpp" 47 #include "oops/oop.inline.hpp" 48 #include "opto/addnode.hpp" 49 #include "opto/callnode.hpp" 50 #include "opto/cfgnode.hpp" 51 #include "opto/connode.hpp" 52 #include "opto/graphKit.hpp" 53 #include "opto/machnode.hpp" 54 #include "opto/matcher.hpp" 55 #include "opto/memnode.hpp" 56 #include "opto/mulnode.hpp" 57 #include "opto/runtime.hpp" 58 #include "opto/subnode.hpp" 59 #include "runtime/fprofiler.hpp" 60 #include "runtime/handles.inline.hpp" 61 #include "runtime/interfaceSupport.hpp" 62 #include "runtime/javaCalls.hpp" 63 #include "runtime/sharedRuntime.hpp" 64 #include "runtime/signature.hpp" 65 #include "runtime/threadCritical.hpp" 66 #include "runtime/vframe.hpp" 67 #include "runtime/vframeArray.hpp" 68 #include "runtime/vframe_hp.hpp" 69 #include "utilities/copy.hpp" 70 #include "utilities/preserveException.hpp" 71 #if defined AD_MD_HPP 72 # include AD_MD_HPP 73 #elif defined TARGET_ARCH_MODEL_x86_32 74 # include "adfiles/ad_x86_32.hpp" 75 #elif defined TARGET_ARCH_MODEL_x86_64 76 # include "adfiles/ad_x86_64.hpp" 77 #elif defined TARGET_ARCH_MODEL_sparc 78 # include "adfiles/ad_sparc.hpp" 79 #elif defined TARGET_ARCH_MODEL_zero 80 # include "adfiles/ad_zero.hpp" 81 #elif defined TARGET_ARCH_MODEL_ppc_64 82 # include "adfiles/ad_ppc_64.hpp" 83 #endif 84 85 86 // For debugging purposes: 87 // To force FullGCALot inside a runtime function, add the following two lines 88 // 89 // Universe::release_fullgc_alot_dummy(); 90 // MarkSweep::invoke(0, "Debugging"); 91 // 92 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 93 94 95 96 97 // Compiled code entry points 98 address OptoRuntime::_new_instance_Java = NULL; 99 address OptoRuntime::_new_array_Java = NULL; 100 address OptoRuntime::_new_array_nozero_Java = NULL; 101 address OptoRuntime::_multianewarray2_Java = NULL; 102 address OptoRuntime::_multianewarray3_Java = NULL; 103 address OptoRuntime::_multianewarray4_Java = NULL; 104 address OptoRuntime::_multianewarray5_Java = NULL; 105 address OptoRuntime::_multianewarrayN_Java = NULL; 106 address OptoRuntime::_g1_wb_pre_Java = NULL; 107 address OptoRuntime::_g1_wb_post_Java = NULL; 108 address OptoRuntime::_vtable_must_compile_Java = NULL; 109 address OptoRuntime::_complete_monitor_locking_Java = NULL; 110 address OptoRuntime::_rethrow_Java = NULL; 111 112 address OptoRuntime::_slow_arraycopy_Java = NULL; 113 address OptoRuntime::_register_finalizer_Java = NULL; 114 115 # ifdef ENABLE_ZAP_DEAD_LOCALS 116 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 117 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 118 # endif 119 120 ExceptionBlob* OptoRuntime::_exception_blob; 121 122 // This should be called in an assertion at the start of OptoRuntime routines 123 // which are entered from compiled code (all of them) 124 #ifdef ASSERT 125 static bool check_compiled_frame(JavaThread* thread) { 126 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 127 RegisterMap map(thread, false); 128 frame caller = thread->last_frame().sender(&map); 129 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 130 return true; 131 } 132 #endif // ASSERT 133 134 135 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 136 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \ 137 if (var == NULL) { return false; } 138 139 bool OptoRuntime::generate(ciEnv* env) { 140 141 generate_exception_blob(); 142 143 // Note: tls: Means fetching the return oop out of the thread-local storage 144 // 145 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 146 // ------------------------------------------------------------------------------------------------------------------------------- 147 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 148 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 149 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); 150 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 151 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 152 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 153 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 154 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); 155 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 156 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 157 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false); 158 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 159 160 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 161 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 162 163 # ifdef ENABLE_ZAP_DEAD_LOCALS 164 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 165 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 166 # endif 167 return true; 168 } 169 170 #undef gen 171 172 173 // Helper method to do generation of RunTimeStub's 174 address OptoRuntime::generate_stub( ciEnv* env, 175 TypeFunc_generator gen, address C_function, 176 const char *name, int is_fancy_jump, 177 bool pass_tls, 178 bool save_argument_registers, 179 bool return_pc ) { 180 ResourceMark rm; 181 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 182 return C.stub_entry_point(); 183 } 184 185 const char* OptoRuntime::stub_name(address entry) { 186 #ifndef PRODUCT 187 CodeBlob* cb = CodeCache::find_blob(entry); 188 RuntimeStub* rs =(RuntimeStub *)cb; 189 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 190 return rs->name(); 191 #else 192 // Fast implementation for product mode (maybe it should be inlined too) 193 return "runtime stub"; 194 #endif 195 } 196 197 198 //============================================================================= 199 // Opto compiler runtime routines 200 //============================================================================= 201 202 203 //=============================allocation====================================== 204 // We failed the fast-path allocation. Now we need to do a scavenge or GC 205 // and try allocation again. 206 207 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 208 // After any safepoint, just before going back to compiled code, 209 // we inform the GC that we will be doing initializing writes to 210 // this object in the future without emitting card-marks, so 211 // GC may take any compensating steps. 212 // NOTE: Keep this code consistent with GraphKit::store_barrier. 213 214 oop new_obj = thread->vm_result(); 215 if (new_obj == NULL) return; 216 217 assert(Universe::heap()->can_elide_tlab_store_barriers(), 218 "compiler must check this first"); 219 // GC may decide to give back a safer copy of new_obj. 220 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 221 thread->set_vm_result(new_obj); 222 } 223 224 // object allocation 225 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread)) 226 JRT_BLOCK; 227 #ifndef PRODUCT 228 SharedRuntime::_new_instance_ctr++; // new instance requires GC 229 #endif 230 assert(check_compiled_frame(thread), "incorrect caller"); 231 232 // These checks are cheap to make and support reflective allocation. 233 int lh = klass->layout_helper(); 234 if (Klass::layout_helper_needs_slow_path(lh) 235 || !InstanceKlass::cast(klass)->is_initialized()) { 236 KlassHandle kh(THREAD, klass); 237 kh->check_valid_for_instantiation(false, THREAD); 238 if (!HAS_PENDING_EXCEPTION) { 239 InstanceKlass::cast(kh())->initialize(THREAD); 240 } 241 if (!HAS_PENDING_EXCEPTION) { 242 klass = kh(); 243 } else { 244 klass = NULL; 245 } 246 } 247 248 if (klass != NULL) { 249 // Scavenge and allocate an instance. 250 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD); 251 thread->set_vm_result(result); 252 253 // Pass oops back through thread local storage. Our apparent type to Java 254 // is that we return an oop, but we can block on exit from this routine and 255 // a GC can trash the oop in C's return register. The generated stub will 256 // fetch the oop from TLS after any possible GC. 257 } 258 259 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 260 JRT_BLOCK_END; 261 262 if (GraphKit::use_ReduceInitialCardMarks()) { 263 // inform GC that we won't do card marks for initializing writes. 264 new_store_pre_barrier(thread); 265 } 266 JRT_END 267 268 269 // array allocation 270 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread)) 271 JRT_BLOCK; 272 #ifndef PRODUCT 273 SharedRuntime::_new_array_ctr++; // new array requires GC 274 #endif 275 assert(check_compiled_frame(thread), "incorrect caller"); 276 277 // Scavenge and allocate an instance. 278 oop result; 279 280 if (array_type->oop_is_typeArray()) { 281 // The oopFactory likes to work with the element type. 282 // (We could bypass the oopFactory, since it doesn't add much value.) 283 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 284 result = oopFactory::new_typeArray(elem_type, len, THREAD); 285 } else { 286 // Although the oopFactory likes to work with the elem_type, 287 // the compiler prefers the array_type, since it must already have 288 // that latter value in hand for the fast path. 289 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass(); 290 result = oopFactory::new_objArray(elem_type, len, THREAD); 291 } 292 293 // Pass oops back through thread local storage. Our apparent type to Java 294 // is that we return an oop, but we can block on exit from this routine and 295 // a GC can trash the oop in C's return register. The generated stub will 296 // fetch the oop from TLS after any possible GC. 297 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 298 thread->set_vm_result(result); 299 JRT_BLOCK_END; 300 301 if (GraphKit::use_ReduceInitialCardMarks()) { 302 // inform GC that we won't do card marks for initializing writes. 303 new_store_pre_barrier(thread); 304 } 305 JRT_END 306 307 // array allocation without zeroing 308 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread)) 309 JRT_BLOCK; 310 #ifndef PRODUCT 311 SharedRuntime::_new_array_ctr++; // new array requires GC 312 #endif 313 assert(check_compiled_frame(thread), "incorrect caller"); 314 315 // Scavenge and allocate an instance. 316 oop result; 317 318 assert(array_type->oop_is_typeArray(), "should be called only for type array"); 319 // The oopFactory likes to work with the element type. 320 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 321 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); 322 323 // Pass oops back through thread local storage. Our apparent type to Java 324 // is that we return an oop, but we can block on exit from this routine and 325 // a GC can trash the oop in C's return register. The generated stub will 326 // fetch the oop from TLS after any possible GC. 327 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 328 thread->set_vm_result(result); 329 JRT_BLOCK_END; 330 331 if (GraphKit::use_ReduceInitialCardMarks()) { 332 // inform GC that we won't do card marks for initializing writes. 333 new_store_pre_barrier(thread); 334 } 335 336 oop result = thread->vm_result(); 337 if ((len > 0) && (result != NULL) && 338 is_deoptimized_caller_frame(thread)) { 339 // Zero array here if the caller is deoptimized. 340 int size = ((typeArrayOop)result)->object_size(); 341 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 342 const size_t hs = arrayOopDesc::header_size(elem_type); 343 // Align to next 8 bytes to avoid trashing arrays's length. 344 const size_t aligned_hs = align_object_offset(hs); 345 HeapWord* obj = (HeapWord*)result; 346 if (aligned_hs > hs) { 347 Copy::zero_to_words(obj+hs, aligned_hs-hs); 348 } 349 // Optimized zeroing. 350 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); 351 } 352 353 JRT_END 354 355 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 356 357 // multianewarray for 2 dimensions 358 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread)) 359 #ifndef PRODUCT 360 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 361 #endif 362 assert(check_compiled_frame(thread), "incorrect caller"); 363 assert(elem_type->is_klass(), "not a class"); 364 jint dims[2]; 365 dims[0] = len1; 366 dims[1] = len2; 367 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 368 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 369 thread->set_vm_result(obj); 370 JRT_END 371 372 // multianewarray for 3 dimensions 373 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread)) 374 #ifndef PRODUCT 375 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 376 #endif 377 assert(check_compiled_frame(thread), "incorrect caller"); 378 assert(elem_type->is_klass(), "not a class"); 379 jint dims[3]; 380 dims[0] = len1; 381 dims[1] = len2; 382 dims[2] = len3; 383 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 384 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 385 thread->set_vm_result(obj); 386 JRT_END 387 388 // multianewarray for 4 dimensions 389 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 390 #ifndef PRODUCT 391 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 392 #endif 393 assert(check_compiled_frame(thread), "incorrect caller"); 394 assert(elem_type->is_klass(), "not a class"); 395 jint dims[4]; 396 dims[0] = len1; 397 dims[1] = len2; 398 dims[2] = len3; 399 dims[3] = len4; 400 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 401 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 402 thread->set_vm_result(obj); 403 JRT_END 404 405 // multianewarray for 5 dimensions 406 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 407 #ifndef PRODUCT 408 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 409 #endif 410 assert(check_compiled_frame(thread), "incorrect caller"); 411 assert(elem_type->is_klass(), "not a class"); 412 jint dims[5]; 413 dims[0] = len1; 414 dims[1] = len2; 415 dims[2] = len3; 416 dims[3] = len4; 417 dims[4] = len5; 418 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 419 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 420 thread->set_vm_result(obj); 421 JRT_END 422 423 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread)) 424 assert(check_compiled_frame(thread), "incorrect caller"); 425 assert(elem_type->is_klass(), "not a class"); 426 assert(oop(dims)->is_typeArray(), "not an array"); 427 428 ResourceMark rm; 429 jint len = dims->length(); 430 assert(len > 0, "Dimensions array should contain data"); 431 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); 432 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); 433 Copy::conjoint_jints_atomic(j_dims, c_dims, len); 434 435 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); 436 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 437 thread->set_vm_result(obj); 438 JRT_END 439 440 441 const TypeFunc *OptoRuntime::new_instance_Type() { 442 // create input type (domain) 443 const Type **fields = TypeTuple::fields(1); 444 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 445 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 446 447 // create result type (range) 448 fields = TypeTuple::fields(1); 449 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 450 451 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 452 453 return TypeFunc::make(domain, range); 454 } 455 456 457 const TypeFunc *OptoRuntime::athrow_Type() { 458 // create input type (domain) 459 const Type **fields = TypeTuple::fields(1); 460 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 461 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 462 463 // create result type (range) 464 fields = TypeTuple::fields(0); 465 466 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 467 468 return TypeFunc::make(domain, range); 469 } 470 471 472 const TypeFunc *OptoRuntime::new_array_Type() { 473 // create input type (domain) 474 const Type **fields = TypeTuple::fields(2); 475 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 476 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 477 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 478 479 // create result type (range) 480 fields = TypeTuple::fields(1); 481 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 482 483 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 484 485 return TypeFunc::make(domain, range); 486 } 487 488 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 489 // create input type (domain) 490 const int nargs = ndim + 1; 491 const Type **fields = TypeTuple::fields(nargs); 492 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 493 for( int i = 1; i < nargs; i++ ) 494 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 495 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 496 497 // create result type (range) 498 fields = TypeTuple::fields(1); 499 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 500 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 501 502 return TypeFunc::make(domain, range); 503 } 504 505 const TypeFunc *OptoRuntime::multianewarray2_Type() { 506 return multianewarray_Type(2); 507 } 508 509 const TypeFunc *OptoRuntime::multianewarray3_Type() { 510 return multianewarray_Type(3); 511 } 512 513 const TypeFunc *OptoRuntime::multianewarray4_Type() { 514 return multianewarray_Type(4); 515 } 516 517 const TypeFunc *OptoRuntime::multianewarray5_Type() { 518 return multianewarray_Type(5); 519 } 520 521 const TypeFunc *OptoRuntime::multianewarrayN_Type() { 522 // create input type (domain) 523 const Type **fields = TypeTuple::fields(2); 524 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 525 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes 526 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 527 528 // create result type (range) 529 fields = TypeTuple::fields(1); 530 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 531 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 532 533 return TypeFunc::make(domain, range); 534 } 535 536 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 537 const Type **fields = TypeTuple::fields(2); 538 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 539 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 540 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 541 542 // create result type (range) 543 fields = TypeTuple::fields(0); 544 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 545 546 return TypeFunc::make(domain, range); 547 } 548 549 const TypeFunc *OptoRuntime::g1_wb_post_Type() { 550 551 const Type **fields = TypeTuple::fields(2); 552 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 553 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 554 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 555 556 // create result type (range) 557 fields = TypeTuple::fields(0); 558 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 559 560 return TypeFunc::make(domain, range); 561 } 562 563 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 564 // create input type (domain) 565 const Type **fields = TypeTuple::fields(1); 566 // Symbol* name of class to be loaded 567 fields[TypeFunc::Parms+0] = TypeInt::INT; 568 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 569 570 // create result type (range) 571 fields = TypeTuple::fields(0); 572 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 573 574 return TypeFunc::make(domain, range); 575 } 576 577 # ifdef ENABLE_ZAP_DEAD_LOCALS 578 // Type used for stub generation for zap_dead_locals. 579 // No inputs or outputs 580 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 581 // create input type (domain) 582 const Type **fields = TypeTuple::fields(0); 583 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 584 585 // create result type (range) 586 fields = TypeTuple::fields(0); 587 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 588 589 return TypeFunc::make(domain,range); 590 } 591 # endif 592 593 594 //----------------------------------------------------------------------------- 595 // Monitor Handling 596 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 597 // create input type (domain) 598 const Type **fields = TypeTuple::fields(2); 599 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 600 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 601 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 602 603 // create result type (range) 604 fields = TypeTuple::fields(0); 605 606 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 607 608 return TypeFunc::make(domain,range); 609 } 610 611 612 //----------------------------------------------------------------------------- 613 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 614 // create input type (domain) 615 const Type **fields = TypeTuple::fields(2); 616 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 617 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 618 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 619 620 // create result type (range) 621 fields = TypeTuple::fields(0); 622 623 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 624 625 return TypeFunc::make(domain,range); 626 } 627 628 const TypeFunc* OptoRuntime::flush_windows_Type() { 629 // create input type (domain) 630 const Type** fields = TypeTuple::fields(1); 631 fields[TypeFunc::Parms+0] = NULL; // void 632 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 633 634 // create result type 635 fields = TypeTuple::fields(1); 636 fields[TypeFunc::Parms+0] = NULL; // void 637 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 638 639 return TypeFunc::make(domain, range); 640 } 641 642 const TypeFunc* OptoRuntime::l2f_Type() { 643 // create input type (domain) 644 const Type **fields = TypeTuple::fields(2); 645 fields[TypeFunc::Parms+0] = TypeLong::LONG; 646 fields[TypeFunc::Parms+1] = Type::HALF; 647 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 648 649 // create result type (range) 650 fields = TypeTuple::fields(1); 651 fields[TypeFunc::Parms+0] = Type::FLOAT; 652 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 653 654 return TypeFunc::make(domain, range); 655 } 656 657 const TypeFunc* OptoRuntime::modf_Type() { 658 const Type **fields = TypeTuple::fields(2); 659 fields[TypeFunc::Parms+0] = Type::FLOAT; 660 fields[TypeFunc::Parms+1] = Type::FLOAT; 661 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 662 663 // create result type (range) 664 fields = TypeTuple::fields(1); 665 fields[TypeFunc::Parms+0] = Type::FLOAT; 666 667 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 668 669 return TypeFunc::make(domain, range); 670 } 671 672 const TypeFunc *OptoRuntime::Math_D_D_Type() { 673 // create input type (domain) 674 const Type **fields = TypeTuple::fields(2); 675 // Symbol* name of class to be loaded 676 fields[TypeFunc::Parms+0] = Type::DOUBLE; 677 fields[TypeFunc::Parms+1] = Type::HALF; 678 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 679 680 // create result type (range) 681 fields = TypeTuple::fields(2); 682 fields[TypeFunc::Parms+0] = Type::DOUBLE; 683 fields[TypeFunc::Parms+1] = Type::HALF; 684 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 685 686 return TypeFunc::make(domain, range); 687 } 688 689 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 690 const Type **fields = TypeTuple::fields(4); 691 fields[TypeFunc::Parms+0] = Type::DOUBLE; 692 fields[TypeFunc::Parms+1] = Type::HALF; 693 fields[TypeFunc::Parms+2] = Type::DOUBLE; 694 fields[TypeFunc::Parms+3] = Type::HALF; 695 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 696 697 // create result type (range) 698 fields = TypeTuple::fields(2); 699 fields[TypeFunc::Parms+0] = Type::DOUBLE; 700 fields[TypeFunc::Parms+1] = Type::HALF; 701 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 702 703 return TypeFunc::make(domain, range); 704 } 705 706 //-------------- currentTimeMillis, currentTimeNanos, etc 707 708 const TypeFunc* OptoRuntime::void_long_Type() { 709 // create input type (domain) 710 const Type **fields = TypeTuple::fields(0); 711 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 712 713 // create result type (range) 714 fields = TypeTuple::fields(2); 715 fields[TypeFunc::Parms+0] = TypeLong::LONG; 716 fields[TypeFunc::Parms+1] = Type::HALF; 717 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 718 719 return TypeFunc::make(domain, range); 720 } 721 722 // arraycopy stub variations: 723 enum ArrayCopyType { 724 ac_fast, // void(ptr, ptr, size_t) 725 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 726 ac_slow, // void(ptr, int, ptr, int, int) 727 ac_generic // int(ptr, int, ptr, int, int) 728 }; 729 730 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 731 // create input type (domain) 732 int num_args = (act == ac_fast ? 3 : 5); 733 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 734 int argcnt = num_args; 735 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 736 const Type** fields = TypeTuple::fields(argcnt); 737 int argp = TypeFunc::Parms; 738 fields[argp++] = TypePtr::NOTNULL; // src 739 if (num_size_args == 0) { 740 fields[argp++] = TypeInt::INT; // src_pos 741 } 742 fields[argp++] = TypePtr::NOTNULL; // dest 743 if (num_size_args == 0) { 744 fields[argp++] = TypeInt::INT; // dest_pos 745 fields[argp++] = TypeInt::INT; // length 746 } 747 while (num_size_args-- > 0) { 748 fields[argp++] = TypeX_X; // size in whatevers (size_t) 749 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 750 } 751 if (act == ac_checkcast) { 752 fields[argp++] = TypePtr::NOTNULL; // super_klass 753 } 754 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 755 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 756 757 // create result type if needed 758 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 759 fields = TypeTuple::fields(1); 760 if (retcnt == 0) 761 fields[TypeFunc::Parms+0] = NULL; // void 762 else 763 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 764 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 765 return TypeFunc::make(domain, range); 766 } 767 768 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 769 // This signature is simple: Two base pointers and a size_t. 770 return make_arraycopy_Type(ac_fast); 771 } 772 773 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 774 // An extension of fast_arraycopy_Type which adds type checking. 775 return make_arraycopy_Type(ac_checkcast); 776 } 777 778 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 779 // This signature is exactly the same as System.arraycopy. 780 // There are no intptr_t (int/long) arguments. 781 return make_arraycopy_Type(ac_slow); 782 } 783 784 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 785 // This signature is like System.arraycopy, except that it returns status. 786 return make_arraycopy_Type(ac_generic); 787 } 788 789 790 const TypeFunc* OptoRuntime::array_fill_Type() { 791 const Type** fields; 792 int argp = TypeFunc::Parms; 793 if (CCallingConventionRequiresIntsAsLongs) { 794 // create input type (domain): pointer, int, size_t 795 fields = TypeTuple::fields(3 LP64_ONLY( + 2)); 796 fields[argp++] = TypePtr::NOTNULL; 797 fields[argp++] = TypeLong::LONG; 798 fields[argp++] = Type::HALF; 799 } else { 800 // create input type (domain): pointer, int, size_t 801 fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 802 fields[argp++] = TypePtr::NOTNULL; 803 fields[argp++] = TypeInt::INT; 804 } 805 fields[argp++] = TypeX_X; // size in whatevers (size_t) 806 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 807 const TypeTuple *domain = TypeTuple::make(argp, fields); 808 809 // create result type 810 fields = TypeTuple::fields(1); 811 fields[TypeFunc::Parms+0] = NULL; // void 812 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 813 814 return TypeFunc::make(domain, range); 815 } 816 817 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant) 818 const TypeFunc* OptoRuntime::aescrypt_block_Type() { 819 // create input type (domain) 820 int num_args = 3; 821 if (Matcher::pass_original_key_for_aes()) { 822 num_args = 4; 823 } 824 int argcnt = num_args; 825 const Type** fields = TypeTuple::fields(argcnt); 826 int argp = TypeFunc::Parms; 827 fields[argp++] = TypePtr::NOTNULL; // src 828 fields[argp++] = TypePtr::NOTNULL; // dest 829 fields[argp++] = TypePtr::NOTNULL; // k array 830 if (Matcher::pass_original_key_for_aes()) { 831 fields[argp++] = TypePtr::NOTNULL; // original k array 832 } 833 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 834 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 835 836 // no result type needed 837 fields = TypeTuple::fields(1); 838 fields[TypeFunc::Parms+0] = NULL; // void 839 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 840 return TypeFunc::make(domain, range); 841 } 842 843 /** 844 * int updateBytesCRC32(int crc, byte* b, int len) 845 */ 846 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() { 847 // create input type (domain) 848 int num_args = 3; 849 int argcnt = num_args; 850 const Type** fields = TypeTuple::fields(argcnt); 851 int argp = TypeFunc::Parms; 852 fields[argp++] = TypeInt::INT; // crc 853 fields[argp++] = TypePtr::NOTNULL; // src 854 fields[argp++] = TypeInt::INT; // len 855 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 856 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 857 858 // result type needed 859 fields = TypeTuple::fields(1); 860 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 861 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 862 return TypeFunc::make(domain, range); 863 } 864 865 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning int 866 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 867 // create input type (domain) 868 int num_args = 5; 869 if (Matcher::pass_original_key_for_aes()) { 870 num_args = 6; 871 } 872 int argcnt = num_args; 873 const Type** fields = TypeTuple::fields(argcnt); 874 int argp = TypeFunc::Parms; 875 fields[argp++] = TypePtr::NOTNULL; // src 876 fields[argp++] = TypePtr::NOTNULL; // dest 877 fields[argp++] = TypePtr::NOTNULL; // k array 878 fields[argp++] = TypePtr::NOTNULL; // r array 879 fields[argp++] = TypeInt::INT; // src len 880 if (Matcher::pass_original_key_for_aes()) { 881 fields[argp++] = TypePtr::NOTNULL; // original k array 882 } 883 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 884 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 885 886 // returning cipher len (int) 887 fields = TypeTuple::fields(1); 888 fields[TypeFunc::Parms+0] = TypeInt::INT; 889 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 890 return TypeFunc::make(domain, range); 891 } 892 893 /* 894 * void implCompress(byte[] buf, int ofs) 895 */ 896 const TypeFunc* OptoRuntime::sha_implCompress_Type() { 897 // create input type (domain) 898 int num_args = 2; 899 int argcnt = num_args; 900 const Type** fields = TypeTuple::fields(argcnt); 901 int argp = TypeFunc::Parms; 902 fields[argp++] = TypePtr::NOTNULL; // buf 903 fields[argp++] = TypePtr::NOTNULL; // state 904 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 905 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 906 907 // no result type needed 908 fields = TypeTuple::fields(1); 909 fields[TypeFunc::Parms+0] = NULL; // void 910 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 911 return TypeFunc::make(domain, range); 912 } 913 914 /* 915 * int implCompressMultiBlock(byte[] b, int ofs, int limit) 916 */ 917 const TypeFunc* OptoRuntime::digestBase_implCompressMB_Type() { 918 // create input type (domain) 919 int num_args = 4; 920 int argcnt = num_args; 921 const Type** fields = TypeTuple::fields(argcnt); 922 int argp = TypeFunc::Parms; 923 fields[argp++] = TypePtr::NOTNULL; // buf 924 fields[argp++] = TypePtr::NOTNULL; // state 925 fields[argp++] = TypeInt::INT; // ofs 926 fields[argp++] = TypeInt::INT; // limit 927 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 928 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 929 930 // returning ofs (int) 931 fields = TypeTuple::fields(1); 932 fields[TypeFunc::Parms+0] = TypeInt::INT; // ofs 933 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 934 return TypeFunc::make(domain, range); 935 } 936 937 const TypeFunc* OptoRuntime::multiplyToLen_Type() { 938 // create input type (domain) 939 int num_args = 6; 940 int argcnt = num_args; 941 const Type** fields = TypeTuple::fields(argcnt); 942 int argp = TypeFunc::Parms; 943 fields[argp++] = TypePtr::NOTNULL; // x 944 fields[argp++] = TypeInt::INT; // xlen 945 fields[argp++] = TypePtr::NOTNULL; // y 946 fields[argp++] = TypeInt::INT; // ylen 947 fields[argp++] = TypePtr::NOTNULL; // z 948 fields[argp++] = TypeInt::INT; // zlen 949 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 950 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 951 952 // no result type needed 953 fields = TypeTuple::fields(1); 954 fields[TypeFunc::Parms+0] = NULL; 955 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 956 return TypeFunc::make(domain, range); 957 } 958 959 960 961 //------------- Interpreter state access for on stack replacement 962 const TypeFunc* OptoRuntime::osr_end_Type() { 963 // create input type (domain) 964 const Type **fields = TypeTuple::fields(1); 965 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 966 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 967 968 // create result type 969 fields = TypeTuple::fields(1); 970 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 971 fields[TypeFunc::Parms+0] = NULL; // void 972 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 973 return TypeFunc::make(domain, range); 974 } 975 976 //-------------- methodData update helpers 977 978 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 979 // create input type (domain) 980 const Type **fields = TypeTuple::fields(2); 981 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 982 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 983 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 984 985 // create result type 986 fields = TypeTuple::fields(1); 987 fields[TypeFunc::Parms+0] = NULL; // void 988 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 989 return TypeFunc::make(domain,range); 990 } 991 992 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 993 if (receiver == NULL) return; 994 Klass* receiver_klass = receiver->klass(); 995 996 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 997 int empty_row = -1; // free row, if any is encountered 998 999 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 1000 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 1001 // if (vc->receiver(row) == receiver_klass) 1002 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 1003 intptr_t row_recv = *(mdp + receiver_off); 1004 if (row_recv == (intptr_t) receiver_klass) { 1005 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 1006 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 1007 *(mdp + count_off) += DataLayout::counter_increment; 1008 return; 1009 } else if (row_recv == 0) { 1010 // else if (vc->receiver(row) == NULL) 1011 empty_row = (int) row; 1012 } 1013 } 1014 1015 if (empty_row != -1) { 1016 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 1017 // vc->set_receiver(empty_row, receiver_klass); 1018 *(mdp + receiver_off) = (intptr_t) receiver_klass; 1019 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 1020 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 1021 *(mdp + count_off) = DataLayout::counter_increment; 1022 } else { 1023 // Receiver did not match any saved receiver and there is no empty row for it. 1024 // Increment total counter to indicate polymorphic case. 1025 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 1026 *count_p += DataLayout::counter_increment; 1027 } 1028 JRT_END 1029 1030 //------------------------------------------------------------------------------------- 1031 // register policy 1032 1033 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 1034 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 1035 switch (register_save_policy[reg]) { 1036 case 'C': return false; //SOC 1037 case 'E': return true ; //SOE 1038 case 'N': return false; //NS 1039 case 'A': return false; //AS 1040 } 1041 ShouldNotReachHere(); 1042 return false; 1043 } 1044 1045 //----------------------------------------------------------------------- 1046 // Exceptions 1047 // 1048 1049 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 1050 1051 // The method is an entry that is always called by a C++ method not 1052 // directly from compiled code. Compiled code will call the C++ method following. 1053 // We can't allow async exception to be installed during exception processing. 1054 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 1055 1056 // Do not confuse exception_oop with pending_exception. The exception_oop 1057 // is only used to pass arguments into the method. Not for general 1058 // exception handling. DO NOT CHANGE IT to use pending_exception, since 1059 // the runtime stubs checks this on exit. 1060 assert(thread->exception_oop() != NULL, "exception oop is found"); 1061 address handler_address = NULL; 1062 1063 Handle exception(thread, thread->exception_oop()); 1064 address pc = thread->exception_pc(); 1065 1066 // Clear out the exception oop and pc since looking up an 1067 // exception handler can cause class loading, which might throw an 1068 // exception and those fields are expected to be clear during 1069 // normal bytecode execution. 1070 thread->clear_exception_oop_and_pc(); 1071 1072 if (TraceExceptions) { 1073 trace_exception(exception(), pc, ""); 1074 } 1075 1076 // for AbortVMOnException flag 1077 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 1078 1079 #ifdef ASSERT 1080 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1081 // should throw an exception here 1082 ShouldNotReachHere(); 1083 } 1084 #endif 1085 1086 // new exception handling: this method is entered only from adapters 1087 // exceptions from compiled java methods are handled in compiled code 1088 // using rethrow node 1089 1090 nm = CodeCache::find_nmethod(pc); 1091 assert(nm != NULL, "No NMethod found"); 1092 if (nm->is_native_method()) { 1093 fatal("Native method should not have path to exception handling"); 1094 } else { 1095 // we are switching to old paradigm: search for exception handler in caller_frame 1096 // instead in exception handler of caller_frame.sender() 1097 1098 if (JvmtiExport::can_post_on_exceptions()) { 1099 // "Full-speed catching" is not necessary here, 1100 // since we're notifying the VM on every catch. 1101 // Force deoptimization and the rest of the lookup 1102 // will be fine. 1103 deoptimize_caller_frame(thread); 1104 } 1105 1106 // Check the stack guard pages. If enabled, look for handler in this frame; 1107 // otherwise, forcibly unwind the frame. 1108 // 1109 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1110 bool force_unwind = !thread->reguard_stack(); 1111 bool deopting = false; 1112 if (nm->is_deopt_pc(pc)) { 1113 deopting = true; 1114 RegisterMap map(thread, false); 1115 frame deoptee = thread->last_frame().sender(&map); 1116 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1117 // Adjust the pc back to the original throwing pc 1118 pc = deoptee.pc(); 1119 } 1120 1121 // If we are forcing an unwind because of stack overflow then deopt is 1122 // irrelevant since we are throwing the frame away anyway. 1123 1124 if (deopting && !force_unwind) { 1125 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1126 } else { 1127 1128 handler_address = 1129 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1130 1131 if (handler_address == NULL) { 1132 Handle original_exception(thread, exception()); 1133 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1134 assert (handler_address != NULL, "must have compiled handler"); 1135 // Update the exception cache only when the unwind was not forced 1136 // and there didn't happen another exception during the computation of the 1137 // compiled exception handler. 1138 if (!force_unwind && original_exception() == exception()) { 1139 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1140 } 1141 } else { 1142 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1143 } 1144 } 1145 1146 thread->set_exception_pc(pc); 1147 thread->set_exception_handler_pc(handler_address); 1148 1149 // Check if the exception PC is a MethodHandle call site. 1150 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1151 } 1152 1153 // Restore correct return pc. Was saved above. 1154 thread->set_exception_oop(exception()); 1155 return handler_address; 1156 1157 JRT_END 1158 1159 // We are entering here from exception_blob 1160 // If there is a compiled exception handler in this method, we will continue there; 1161 // otherwise we will unwind the stack and continue at the caller of top frame method 1162 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1163 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1164 // we looked up the handler for has been deoptimized in the meantime. If it has been 1165 // we must not use the handler and instead return the deopt blob. 1166 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1167 // 1168 // We are in Java not VM and in debug mode we have a NoHandleMark 1169 // 1170 #ifndef PRODUCT 1171 SharedRuntime::_find_handler_ctr++; // find exception handler 1172 #endif 1173 debug_only(NoHandleMark __hm;) 1174 nmethod* nm = NULL; 1175 address handler_address = NULL; 1176 { 1177 // Enter the VM 1178 1179 ResetNoHandleMark rnhm; 1180 handler_address = handle_exception_C_helper(thread, nm); 1181 } 1182 1183 // Back in java: Use no oops, DON'T safepoint 1184 1185 // Now check to see if the handler we are returning is in a now 1186 // deoptimized frame 1187 1188 if (nm != NULL) { 1189 RegisterMap map(thread, false); 1190 frame caller = thread->last_frame().sender(&map); 1191 #ifdef ASSERT 1192 assert(caller.is_compiled_frame(), "must be"); 1193 #endif // ASSERT 1194 if (caller.is_deoptimized_frame()) { 1195 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1196 } 1197 } 1198 return handler_address; 1199 } 1200 1201 //------------------------------rethrow---------------------------------------- 1202 // We get here after compiled code has executed a 'RethrowNode'. The callee 1203 // is either throwing or rethrowing an exception. The callee-save registers 1204 // have been restored, synchronized objects have been unlocked and the callee 1205 // stack frame has been removed. The return address was passed in. 1206 // Exception oop is passed as the 1st argument. This routine is then called 1207 // from the stub. On exit, we know where to jump in the caller's code. 1208 // After this C code exits, the stub will pop his frame and end in a jump 1209 // (instead of a return). We enter the caller's default handler. 1210 // 1211 // This must be JRT_LEAF: 1212 // - caller will not change its state as we cannot block on exit, 1213 // therefore raw_exception_handler_for_return_address is all it takes 1214 // to handle deoptimized blobs 1215 // 1216 // However, there needs to be a safepoint check in the middle! So compiled 1217 // safepoints are completely watertight. 1218 // 1219 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1220 // 1221 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1222 // 1223 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1224 #ifndef PRODUCT 1225 SharedRuntime::_rethrow_ctr++; // count rethrows 1226 #endif 1227 assert (exception != NULL, "should have thrown a NULLPointerException"); 1228 #ifdef ASSERT 1229 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1230 // should throw an exception here 1231 ShouldNotReachHere(); 1232 } 1233 #endif 1234 1235 thread->set_vm_result(exception); 1236 // Frame not compiled (handles deoptimization blob) 1237 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1238 } 1239 1240 1241 const TypeFunc *OptoRuntime::rethrow_Type() { 1242 // create input type (domain) 1243 const Type **fields = TypeTuple::fields(1); 1244 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1245 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1246 1247 // create result type (range) 1248 fields = TypeTuple::fields(1); 1249 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1250 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1251 1252 return TypeFunc::make(domain, range); 1253 } 1254 1255 1256 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1257 // Deoptimize the caller before continuing, as the compiled 1258 // exception handler table may not be valid. 1259 if (!StressCompiledExceptionHandlers && doit) { 1260 deoptimize_caller_frame(thread); 1261 } 1262 } 1263 1264 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1265 // Called from within the owner thread, so no need for safepoint 1266 RegisterMap reg_map(thread); 1267 frame stub_frame = thread->last_frame(); 1268 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1269 frame caller_frame = stub_frame.sender(®_map); 1270 1271 // Deoptimize the caller frame. 1272 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1273 } 1274 1275 1276 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1277 // Called from within the owner thread, so no need for safepoint 1278 RegisterMap reg_map(thread); 1279 frame stub_frame = thread->last_frame(); 1280 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1281 frame caller_frame = stub_frame.sender(®_map); 1282 return caller_frame.is_deoptimized_frame(); 1283 } 1284 1285 1286 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1287 // create input type (domain) 1288 const Type **fields = TypeTuple::fields(1); 1289 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1290 // // The JavaThread* is passed to each routine as the last argument 1291 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1292 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1293 1294 // create result type (range) 1295 fields = TypeTuple::fields(0); 1296 1297 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1298 1299 return TypeFunc::make(domain,range); 1300 } 1301 1302 1303 //----------------------------------------------------------------------------- 1304 // Dtrace support. entry and exit probes have the same signature 1305 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1306 // create input type (domain) 1307 const Type **fields = TypeTuple::fields(2); 1308 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1309 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1310 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1311 1312 // create result type (range) 1313 fields = TypeTuple::fields(0); 1314 1315 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1316 1317 return TypeFunc::make(domain,range); 1318 } 1319 1320 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1321 // create input type (domain) 1322 const Type **fields = TypeTuple::fields(2); 1323 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1324 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1325 1326 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1327 1328 // create result type (range) 1329 fields = TypeTuple::fields(0); 1330 1331 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1332 1333 return TypeFunc::make(domain,range); 1334 } 1335 1336 1337 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1338 assert(obj->is_oop(), "must be a valid oop"); 1339 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1340 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1341 JRT_END 1342 1343 //----------------------------------------------------------------------------- 1344 1345 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1346 1347 // 1348 // dump the collected NamedCounters. 1349 // 1350 void OptoRuntime::print_named_counters() { 1351 int total_lock_count = 0; 1352 int eliminated_lock_count = 0; 1353 1354 NamedCounter* c = _named_counters; 1355 while (c) { 1356 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1357 int count = c->count(); 1358 if (count > 0) { 1359 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1360 if (Verbose) { 1361 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1362 } 1363 total_lock_count += count; 1364 if (eliminated) { 1365 eliminated_lock_count += count; 1366 } 1367 } 1368 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1369 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1370 if (blc->nonzero()) { 1371 tty->print_cr("%s", c->name()); 1372 blc->print_on(tty); 1373 } 1374 #if INCLUDE_RTM_OPT 1375 } else if (c->tag() == NamedCounter::RTMLockingCounter) { 1376 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters(); 1377 if (rlc->nonzero()) { 1378 tty->print_cr("%s", c->name()); 1379 rlc->print_on(tty); 1380 } 1381 #endif 1382 } 1383 c = c->next(); 1384 } 1385 if (total_lock_count > 0) { 1386 tty->print_cr("dynamic locks: %d", total_lock_count); 1387 if (eliminated_lock_count) { 1388 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1389 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1390 } 1391 } 1392 } 1393 1394 // 1395 // Allocate a new NamedCounter. The JVMState is used to generate the 1396 // name which consists of method@line for the inlining tree. 1397 // 1398 1399 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1400 int max_depth = youngest_jvms->depth(); 1401 1402 // Visit scopes from youngest to oldest. 1403 bool first = true; 1404 stringStream st; 1405 for (int depth = max_depth; depth >= 1; depth--) { 1406 JVMState* jvms = youngest_jvms->of_depth(depth); 1407 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1408 if (!first) { 1409 st.print(" "); 1410 } else { 1411 first = false; 1412 } 1413 int bci = jvms->bci(); 1414 if (bci < 0) bci = 0; 1415 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1416 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1417 } 1418 NamedCounter* c; 1419 if (tag == NamedCounter::BiasedLockingCounter) { 1420 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1421 } else if (tag == NamedCounter::RTMLockingCounter) { 1422 c = new RTMLockingNamedCounter(strdup(st.as_string())); 1423 } else { 1424 c = new NamedCounter(strdup(st.as_string()), tag); 1425 } 1426 1427 // atomically add the new counter to the head of the list. We only 1428 // add counters so this is safe. 1429 NamedCounter* head; 1430 do { 1431 c->set_next(NULL); 1432 head = _named_counters; 1433 c->set_next(head); 1434 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1435 return c; 1436 } 1437 1438 //----------------------------------------------------------------------------- 1439 // Non-product code 1440 #ifndef PRODUCT 1441 1442 int trace_exception_counter = 0; 1443 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1444 ttyLocker ttyl; 1445 trace_exception_counter++; 1446 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1447 exception_oop->print_value(); 1448 tty->print(" in "); 1449 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1450 if (blob->is_nmethod()) { 1451 nmethod* nm = blob->as_nmethod_or_null(); 1452 nm->method()->print_value(); 1453 } else if (blob->is_runtime_stub()) { 1454 tty->print("<runtime-stub>"); 1455 } else { 1456 tty->print("<unknown>"); 1457 } 1458 tty->print(" at " INTPTR_FORMAT, p2i(exception_pc)); 1459 tty->print_cr("]"); 1460 } 1461 1462 #endif // PRODUCT 1463 1464 1465 # ifdef ENABLE_ZAP_DEAD_LOCALS 1466 // Called from call sites in compiled code with oop maps (actually safepoints) 1467 // Zaps dead locals in first java frame. 1468 // Is entry because may need to lock to generate oop maps 1469 // Currently, only used for compiler frames, but someday may be used 1470 // for interpreter frames, too. 1471 1472 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1473 1474 // avoid pointers to member funcs with these helpers 1475 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1476 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1477 1478 1479 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1480 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1481 assert(JavaThread::current() == thread, "is this needed?"); 1482 1483 if ( !ZapDeadCompiledLocals ) return; 1484 1485 bool skip = false; 1486 1487 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1488 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1489 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1490 warning("starting zapping after skipping"); 1491 1492 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1493 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1494 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1495 warning("about to zap last zap"); 1496 1497 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1498 1499 if ( skip ) return; 1500 1501 // find java frame and zap it 1502 1503 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1504 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1505 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1506 return; 1507 } 1508 } 1509 warning("no frame found to zap in zap_dead_Java_locals_C"); 1510 } 1511 1512 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1513 zap_dead_java_or_native_locals(thread, is_java_frame); 1514 JRT_END 1515 1516 // The following does not work because for one thing, the 1517 // thread state is wrong; it expects java, but it is native. 1518 // Also, the invariants in a native stub are different and 1519 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1520 // in there. 1521 // So for now, we do not zap in native stubs. 1522 1523 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1524 zap_dead_java_or_native_locals(thread, is_native_frame); 1525 JRT_END 1526 1527 # endif