runtime.cpp revision 5976:2b8e28fdf503
1/* 2 * Copyright (c) 1998, 2013, 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#ifdef TARGET_ARCH_MODEL_x86_32 72# include "adfiles/ad_x86_32.hpp" 73#endif 74#ifdef TARGET_ARCH_MODEL_x86_64 75# include "adfiles/ad_x86_64.hpp" 76#endif 77#ifdef TARGET_ARCH_MODEL_sparc 78# include "adfiles/ad_sparc.hpp" 79#endif 80#ifdef TARGET_ARCH_MODEL_zero 81# include "adfiles/ad_zero.hpp" 82#endif 83#ifdef TARGET_ARCH_MODEL_arm 84# include "adfiles/ad_arm.hpp" 85#endif 86#ifdef TARGET_ARCH_MODEL_ppc_32 87# include "adfiles/ad_ppc_32.hpp" 88#endif 89#ifdef TARGET_ARCH_MODEL_ppc_64 90# include "adfiles/ad_ppc_64.hpp" 91#endif 92 93 94// For debugging purposes: 95// To force FullGCALot inside a runtime function, add the following two lines 96// 97// Universe::release_fullgc_alot_dummy(); 98// MarkSweep::invoke(0, "Debugging"); 99// 100// At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 101 102 103 104 105// Compiled code entry points 106address OptoRuntime::_new_instance_Java = NULL; 107address OptoRuntime::_new_array_Java = NULL; 108address OptoRuntime::_new_array_nozero_Java = NULL; 109address OptoRuntime::_multianewarray2_Java = NULL; 110address OptoRuntime::_multianewarray3_Java = NULL; 111address OptoRuntime::_multianewarray4_Java = NULL; 112address OptoRuntime::_multianewarray5_Java = NULL; 113address OptoRuntime::_multianewarrayN_Java = NULL; 114address OptoRuntime::_g1_wb_pre_Java = NULL; 115address OptoRuntime::_g1_wb_post_Java = NULL; 116address OptoRuntime::_vtable_must_compile_Java = NULL; 117address OptoRuntime::_complete_monitor_locking_Java = NULL; 118address OptoRuntime::_rethrow_Java = NULL; 119 120address OptoRuntime::_slow_arraycopy_Java = NULL; 121address OptoRuntime::_register_finalizer_Java = NULL; 122 123# ifdef ENABLE_ZAP_DEAD_LOCALS 124address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 125address OptoRuntime::_zap_dead_native_locals_Java = NULL; 126# endif 127 128ExceptionBlob* OptoRuntime::_exception_blob; 129 130// This should be called in an assertion at the start of OptoRuntime routines 131// which are entered from compiled code (all of them) 132#ifdef ASSERT 133static bool check_compiled_frame(JavaThread* thread) { 134 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 135 RegisterMap map(thread, false); 136 frame caller = thread->last_frame().sender(&map); 137 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 138 return true; 139} 140#endif // ASSERT 141 142 143#define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 144 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \ 145 if (var == NULL) { return false; } 146 147bool OptoRuntime::generate(ciEnv* env) { 148 149 generate_exception_blob(); 150 151 // Note: tls: Means fetching the return oop out of the thread-local storage 152 // 153 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 154 // ------------------------------------------------------------------------------------------------------------------------------- 155 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 156 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 157 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); 158 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 159 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 160 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 161 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 162 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); 163 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 164 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 165 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false); 166 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 167 168 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 169 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 170 171# ifdef ENABLE_ZAP_DEAD_LOCALS 172 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 173 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 174# endif 175 return true; 176} 177 178#undef gen 179 180 181// Helper method to do generation of RunTimeStub's 182address OptoRuntime::generate_stub( ciEnv* env, 183 TypeFunc_generator gen, address C_function, 184 const char *name, int is_fancy_jump, 185 bool pass_tls, 186 bool save_argument_registers, 187 bool return_pc ) { 188 ResourceMark rm; 189 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 190 return C.stub_entry_point(); 191} 192 193const char* OptoRuntime::stub_name(address entry) { 194#ifndef PRODUCT 195 CodeBlob* cb = CodeCache::find_blob(entry); 196 RuntimeStub* rs =(RuntimeStub *)cb; 197 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 198 return rs->name(); 199#else 200 // Fast implementation for product mode (maybe it should be inlined too) 201 return "runtime stub"; 202#endif 203} 204 205 206//============================================================================= 207// Opto compiler runtime routines 208//============================================================================= 209 210 211//=============================allocation====================================== 212// We failed the fast-path allocation. Now we need to do a scavenge or GC 213// and try allocation again. 214 215void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 216 // After any safepoint, just before going back to compiled code, 217 // we inform the GC that we will be doing initializing writes to 218 // this object in the future without emitting card-marks, so 219 // GC may take any compensating steps. 220 // NOTE: Keep this code consistent with GraphKit::store_barrier. 221 222 oop new_obj = thread->vm_result(); 223 if (new_obj == NULL) return; 224 225 assert(Universe::heap()->can_elide_tlab_store_barriers(), 226 "compiler must check this first"); 227 // GC may decide to give back a safer copy of new_obj. 228 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 229 thread->set_vm_result(new_obj); 230} 231 232// object allocation 233JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread)) 234 JRT_BLOCK; 235#ifndef PRODUCT 236 SharedRuntime::_new_instance_ctr++; // new instance requires GC 237#endif 238 assert(check_compiled_frame(thread), "incorrect caller"); 239 240 // These checks are cheap to make and support reflective allocation. 241 int lh = klass->layout_helper(); 242 if (Klass::layout_helper_needs_slow_path(lh) 243 || !InstanceKlass::cast(klass)->is_initialized()) { 244 KlassHandle kh(THREAD, klass); 245 kh->check_valid_for_instantiation(false, THREAD); 246 if (!HAS_PENDING_EXCEPTION) { 247 InstanceKlass::cast(kh())->initialize(THREAD); 248 } 249 if (!HAS_PENDING_EXCEPTION) { 250 klass = kh(); 251 } else { 252 klass = NULL; 253 } 254 } 255 256 if (klass != NULL) { 257 // Scavenge and allocate an instance. 258 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD); 259 thread->set_vm_result(result); 260 261 // Pass oops back through thread local storage. Our apparent type to Java 262 // is that we return an oop, but we can block on exit from this routine and 263 // a GC can trash the oop in C's return register. The generated stub will 264 // fetch the oop from TLS after any possible GC. 265 } 266 267 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 268 JRT_BLOCK_END; 269 270 if (GraphKit::use_ReduceInitialCardMarks()) { 271 // inform GC that we won't do card marks for initializing writes. 272 new_store_pre_barrier(thread); 273 } 274JRT_END 275 276 277// array allocation 278JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread)) 279 JRT_BLOCK; 280#ifndef PRODUCT 281 SharedRuntime::_new_array_ctr++; // new array requires GC 282#endif 283 assert(check_compiled_frame(thread), "incorrect caller"); 284 285 // Scavenge and allocate an instance. 286 oop result; 287 288 if (array_type->oop_is_typeArray()) { 289 // The oopFactory likes to work with the element type. 290 // (We could bypass the oopFactory, since it doesn't add much value.) 291 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 292 result = oopFactory::new_typeArray(elem_type, len, THREAD); 293 } else { 294 // Although the oopFactory likes to work with the elem_type, 295 // the compiler prefers the array_type, since it must already have 296 // that latter value in hand for the fast path. 297 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass(); 298 result = oopFactory::new_objArray(elem_type, len, THREAD); 299 } 300 301 // Pass oops back through thread local storage. Our apparent type to Java 302 // is that we return an oop, but we can block on exit from this routine and 303 // a GC can trash the oop in C's return register. The generated stub will 304 // fetch the oop from TLS after any possible GC. 305 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 306 thread->set_vm_result(result); 307 JRT_BLOCK_END; 308 309 if (GraphKit::use_ReduceInitialCardMarks()) { 310 // inform GC that we won't do card marks for initializing writes. 311 new_store_pre_barrier(thread); 312 } 313JRT_END 314 315// array allocation without zeroing 316JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread)) 317 JRT_BLOCK; 318#ifndef PRODUCT 319 SharedRuntime::_new_array_ctr++; // new array requires GC 320#endif 321 assert(check_compiled_frame(thread), "incorrect caller"); 322 323 // Scavenge and allocate an instance. 324 oop result; 325 326 assert(array_type->oop_is_typeArray(), "should be called only for type array"); 327 // The oopFactory likes to work with the element type. 328 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 329 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); 330 331 // Pass oops back through thread local storage. Our apparent type to Java 332 // is that we return an oop, but we can block on exit from this routine and 333 // a GC can trash the oop in C's return register. The generated stub will 334 // fetch the oop from TLS after any possible GC. 335 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 336 thread->set_vm_result(result); 337 JRT_BLOCK_END; 338 339 if (GraphKit::use_ReduceInitialCardMarks()) { 340 // inform GC that we won't do card marks for initializing writes. 341 new_store_pre_barrier(thread); 342 } 343 344 oop result = thread->vm_result(); 345 if ((len > 0) && (result != NULL) && 346 is_deoptimized_caller_frame(thread)) { 347 // Zero array here if the caller is deoptimized. 348 int size = ((typeArrayOop)result)->object_size(); 349 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 350 const size_t hs = arrayOopDesc::header_size(elem_type); 351 // Align to next 8 bytes to avoid trashing arrays's length. 352 const size_t aligned_hs = align_object_offset(hs); 353 HeapWord* obj = (HeapWord*)result; 354 if (aligned_hs > hs) { 355 Copy::zero_to_words(obj+hs, aligned_hs-hs); 356 } 357 // Optimized zeroing. 358 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); 359 } 360 361JRT_END 362 363// Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 364 365// multianewarray for 2 dimensions 366JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread)) 367#ifndef PRODUCT 368 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 369#endif 370 assert(check_compiled_frame(thread), "incorrect caller"); 371 assert(elem_type->is_klass(), "not a class"); 372 jint dims[2]; 373 dims[0] = len1; 374 dims[1] = len2; 375 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 376 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 377 thread->set_vm_result(obj); 378JRT_END 379 380// multianewarray for 3 dimensions 381JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread)) 382#ifndef PRODUCT 383 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 384#endif 385 assert(check_compiled_frame(thread), "incorrect caller"); 386 assert(elem_type->is_klass(), "not a class"); 387 jint dims[3]; 388 dims[0] = len1; 389 dims[1] = len2; 390 dims[2] = len3; 391 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 392 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 393 thread->set_vm_result(obj); 394JRT_END 395 396// multianewarray for 4 dimensions 397JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 398#ifndef PRODUCT 399 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 400#endif 401 assert(check_compiled_frame(thread), "incorrect caller"); 402 assert(elem_type->is_klass(), "not a class"); 403 jint dims[4]; 404 dims[0] = len1; 405 dims[1] = len2; 406 dims[2] = len3; 407 dims[3] = len4; 408 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 409 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 410 thread->set_vm_result(obj); 411JRT_END 412 413// multianewarray for 5 dimensions 414JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 415#ifndef PRODUCT 416 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 417#endif 418 assert(check_compiled_frame(thread), "incorrect caller"); 419 assert(elem_type->is_klass(), "not a class"); 420 jint dims[5]; 421 dims[0] = len1; 422 dims[1] = len2; 423 dims[2] = len3; 424 dims[3] = len4; 425 dims[4] = len5; 426 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 427 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 428 thread->set_vm_result(obj); 429JRT_END 430 431JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread)) 432 assert(check_compiled_frame(thread), "incorrect caller"); 433 assert(elem_type->is_klass(), "not a class"); 434 assert(oop(dims)->is_typeArray(), "not an array"); 435 436 ResourceMark rm; 437 jint len = dims->length(); 438 assert(len > 0, "Dimensions array should contain data"); 439 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); 440 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); 441 Copy::conjoint_jints_atomic(j_dims, c_dims, len); 442 443 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); 444 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 445 thread->set_vm_result(obj); 446JRT_END 447 448 449const TypeFunc *OptoRuntime::new_instance_Type() { 450 // create input type (domain) 451 const Type **fields = TypeTuple::fields(1); 452 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 453 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 454 455 // create result type (range) 456 fields = TypeTuple::fields(1); 457 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 458 459 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 460 461 return TypeFunc::make(domain, range); 462} 463 464 465const TypeFunc *OptoRuntime::athrow_Type() { 466 // create input type (domain) 467 const Type **fields = TypeTuple::fields(1); 468 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 469 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 470 471 // create result type (range) 472 fields = TypeTuple::fields(0); 473 474 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 475 476 return TypeFunc::make(domain, range); 477} 478 479 480const TypeFunc *OptoRuntime::new_array_Type() { 481 // create input type (domain) 482 const Type **fields = TypeTuple::fields(2); 483 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 484 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 485 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 486 487 // create result type (range) 488 fields = TypeTuple::fields(1); 489 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 490 491 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 492 493 return TypeFunc::make(domain, range); 494} 495 496const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 497 // create input type (domain) 498 const int nargs = ndim + 1; 499 const Type **fields = TypeTuple::fields(nargs); 500 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 501 for( int i = 1; i < nargs; i++ ) 502 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 503 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 504 505 // create result type (range) 506 fields = TypeTuple::fields(1); 507 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 508 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 509 510 return TypeFunc::make(domain, range); 511} 512 513const TypeFunc *OptoRuntime::multianewarray2_Type() { 514 return multianewarray_Type(2); 515} 516 517const TypeFunc *OptoRuntime::multianewarray3_Type() { 518 return multianewarray_Type(3); 519} 520 521const TypeFunc *OptoRuntime::multianewarray4_Type() { 522 return multianewarray_Type(4); 523} 524 525const TypeFunc *OptoRuntime::multianewarray5_Type() { 526 return multianewarray_Type(5); 527} 528 529const TypeFunc *OptoRuntime::multianewarrayN_Type() { 530 // create input type (domain) 531 const Type **fields = TypeTuple::fields(2); 532 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 533 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes 534 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 535 536 // create result type (range) 537 fields = TypeTuple::fields(1); 538 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 539 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 540 541 return TypeFunc::make(domain, range); 542} 543 544const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 545 const Type **fields = TypeTuple::fields(2); 546 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 547 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 548 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 549 550 // create result type (range) 551 fields = TypeTuple::fields(0); 552 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 553 554 return TypeFunc::make(domain, range); 555} 556 557const TypeFunc *OptoRuntime::g1_wb_post_Type() { 558 559 const Type **fields = TypeTuple::fields(2); 560 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 561 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 562 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 563 564 // create result type (range) 565 fields = TypeTuple::fields(0); 566 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 567 568 return TypeFunc::make(domain, range); 569} 570 571const TypeFunc *OptoRuntime::uncommon_trap_Type() { 572 // create input type (domain) 573 const Type **fields = TypeTuple::fields(1); 574 // Symbol* name of class to be loaded 575 fields[TypeFunc::Parms+0] = TypeInt::INT; 576 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 577 578 // create result type (range) 579 fields = TypeTuple::fields(0); 580 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 581 582 return TypeFunc::make(domain, range); 583} 584 585# ifdef ENABLE_ZAP_DEAD_LOCALS 586// Type used for stub generation for zap_dead_locals. 587// No inputs or outputs 588const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 589 // create input type (domain) 590 const Type **fields = TypeTuple::fields(0); 591 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 592 593 // create result type (range) 594 fields = TypeTuple::fields(0); 595 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 596 597 return TypeFunc::make(domain,range); 598} 599# endif 600 601 602//----------------------------------------------------------------------------- 603// Monitor Handling 604const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 605 // create input type (domain) 606 const Type **fields = TypeTuple::fields(2); 607 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 608 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 609 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 610 611 // create result type (range) 612 fields = TypeTuple::fields(0); 613 614 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 615 616 return TypeFunc::make(domain,range); 617} 618 619 620//----------------------------------------------------------------------------- 621const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 622 // create input type (domain) 623 const Type **fields = TypeTuple::fields(2); 624 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 625 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 626 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 627 628 // create result type (range) 629 fields = TypeTuple::fields(0); 630 631 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 632 633 return TypeFunc::make(domain,range); 634} 635 636const TypeFunc* OptoRuntime::flush_windows_Type() { 637 // create input type (domain) 638 const Type** fields = TypeTuple::fields(1); 639 fields[TypeFunc::Parms+0] = NULL; // void 640 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 641 642 // create result type 643 fields = TypeTuple::fields(1); 644 fields[TypeFunc::Parms+0] = NULL; // void 645 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 646 647 return TypeFunc::make(domain, range); 648} 649 650const TypeFunc* OptoRuntime::l2f_Type() { 651 // create input type (domain) 652 const Type **fields = TypeTuple::fields(2); 653 fields[TypeFunc::Parms+0] = TypeLong::LONG; 654 fields[TypeFunc::Parms+1] = Type::HALF; 655 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 656 657 // create result type (range) 658 fields = TypeTuple::fields(1); 659 fields[TypeFunc::Parms+0] = Type::FLOAT; 660 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 661 662 return TypeFunc::make(domain, range); 663} 664 665const TypeFunc* OptoRuntime::modf_Type() { 666 const Type **fields = TypeTuple::fields(2); 667 fields[TypeFunc::Parms+0] = Type::FLOAT; 668 fields[TypeFunc::Parms+1] = Type::FLOAT; 669 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 670 671 // create result type (range) 672 fields = TypeTuple::fields(1); 673 fields[TypeFunc::Parms+0] = Type::FLOAT; 674 675 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 676 677 return TypeFunc::make(domain, range); 678} 679 680const TypeFunc *OptoRuntime::Math_D_D_Type() { 681 // create input type (domain) 682 const Type **fields = TypeTuple::fields(2); 683 // Symbol* name of class to be loaded 684 fields[TypeFunc::Parms+0] = Type::DOUBLE; 685 fields[TypeFunc::Parms+1] = Type::HALF; 686 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 687 688 // create result type (range) 689 fields = TypeTuple::fields(2); 690 fields[TypeFunc::Parms+0] = Type::DOUBLE; 691 fields[TypeFunc::Parms+1] = Type::HALF; 692 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 693 694 return TypeFunc::make(domain, range); 695} 696 697const TypeFunc* OptoRuntime::Math_DD_D_Type() { 698 const Type **fields = TypeTuple::fields(4); 699 fields[TypeFunc::Parms+0] = Type::DOUBLE; 700 fields[TypeFunc::Parms+1] = Type::HALF; 701 fields[TypeFunc::Parms+2] = Type::DOUBLE; 702 fields[TypeFunc::Parms+3] = Type::HALF; 703 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 704 705 // create result type (range) 706 fields = TypeTuple::fields(2); 707 fields[TypeFunc::Parms+0] = Type::DOUBLE; 708 fields[TypeFunc::Parms+1] = Type::HALF; 709 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 710 711 return TypeFunc::make(domain, range); 712} 713 714//-------------- currentTimeMillis, currentTimeNanos, etc 715 716const TypeFunc* OptoRuntime::void_long_Type() { 717 // create input type (domain) 718 const Type **fields = TypeTuple::fields(0); 719 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 720 721 // create result type (range) 722 fields = TypeTuple::fields(2); 723 fields[TypeFunc::Parms+0] = TypeLong::LONG; 724 fields[TypeFunc::Parms+1] = Type::HALF; 725 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 726 727 return TypeFunc::make(domain, range); 728} 729 730// arraycopy stub variations: 731enum ArrayCopyType { 732 ac_fast, // void(ptr, ptr, size_t) 733 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 734 ac_slow, // void(ptr, int, ptr, int, int) 735 ac_generic // int(ptr, int, ptr, int, int) 736}; 737 738static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 739 // create input type (domain) 740 int num_args = (act == ac_fast ? 3 : 5); 741 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 742 int argcnt = num_args; 743 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 744 const Type** fields = TypeTuple::fields(argcnt); 745 int argp = TypeFunc::Parms; 746 fields[argp++] = TypePtr::NOTNULL; // src 747 if (num_size_args == 0) { 748 fields[argp++] = TypeInt::INT; // src_pos 749 } 750 fields[argp++] = TypePtr::NOTNULL; // dest 751 if (num_size_args == 0) { 752 fields[argp++] = TypeInt::INT; // dest_pos 753 fields[argp++] = TypeInt::INT; // length 754 } 755 while (num_size_args-- > 0) { 756 fields[argp++] = TypeX_X; // size in whatevers (size_t) 757 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 758 } 759 if (act == ac_checkcast) { 760 fields[argp++] = TypePtr::NOTNULL; // super_klass 761 } 762 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 763 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 764 765 // create result type if needed 766 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 767 fields = TypeTuple::fields(1); 768 if (retcnt == 0) 769 fields[TypeFunc::Parms+0] = NULL; // void 770 else 771 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 772 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 773 return TypeFunc::make(domain, range); 774} 775 776const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 777 // This signature is simple: Two base pointers and a size_t. 778 return make_arraycopy_Type(ac_fast); 779} 780 781const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 782 // An extension of fast_arraycopy_Type which adds type checking. 783 return make_arraycopy_Type(ac_checkcast); 784} 785 786const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 787 // This signature is exactly the same as System.arraycopy. 788 // There are no intptr_t (int/long) arguments. 789 return make_arraycopy_Type(ac_slow); 790} 791 792const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 793 // This signature is like System.arraycopy, except that it returns status. 794 return make_arraycopy_Type(ac_generic); 795} 796 797 798const TypeFunc* OptoRuntime::array_fill_Type() { 799 const Type** fields; 800 int argp = TypeFunc::Parms; 801 if (CCallingConventionRequiresIntsAsLongs) { 802 // create input type (domain): pointer, int, size_t 803 fields = TypeTuple::fields(3 LP64_ONLY( + 2)); 804 fields[argp++] = TypePtr::NOTNULL; 805 fields[argp++] = TypeLong::LONG; 806 fields[argp++] = Type::HALF; 807 } else { 808 // create input type (domain): pointer, int, size_t 809 fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 810 fields[argp++] = TypePtr::NOTNULL; 811 fields[argp++] = TypeInt::INT; 812 } 813 fields[argp++] = TypeX_X; // size in whatevers (size_t) 814 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 815 const TypeTuple *domain = TypeTuple::make(argp, fields); 816 817 // create result type 818 fields = TypeTuple::fields(1); 819 fields[TypeFunc::Parms+0] = NULL; // void 820 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 821 822 return TypeFunc::make(domain, range); 823} 824 825// for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant) 826const TypeFunc* OptoRuntime::aescrypt_block_Type() { 827 // create input type (domain) 828 int num_args = 3; 829 int argcnt = num_args; 830 const Type** fields = TypeTuple::fields(argcnt); 831 int argp = TypeFunc::Parms; 832 fields[argp++] = TypePtr::NOTNULL; // src 833 fields[argp++] = TypePtr::NOTNULL; // dest 834 fields[argp++] = TypePtr::NOTNULL; // k array 835 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 836 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 837 838 // no result type needed 839 fields = TypeTuple::fields(1); 840 fields[TypeFunc::Parms+0] = NULL; // void 841 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 842 return TypeFunc::make(domain, range); 843} 844 845/** 846 * int updateBytesCRC32(int crc, byte* b, int len) 847 */ 848const TypeFunc* OptoRuntime::updateBytesCRC32_Type() { 849 // create input type (domain) 850 int num_args = 3; 851 int argcnt = num_args; 852 const Type** fields = TypeTuple::fields(argcnt); 853 int argp = TypeFunc::Parms; 854 fields[argp++] = TypeInt::INT; // crc 855 fields[argp++] = TypePtr::NOTNULL; // src 856 fields[argp++] = TypeInt::INT; // len 857 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 858 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 859 860 // result type needed 861 fields = TypeTuple::fields(1); 862 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 863 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 864 return TypeFunc::make(domain, range); 865} 866 867// for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void 868const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 869 // create input type (domain) 870 int num_args = 5; 871 int argcnt = num_args; 872 const Type** fields = TypeTuple::fields(argcnt); 873 int argp = TypeFunc::Parms; 874 fields[argp++] = TypePtr::NOTNULL; // src 875 fields[argp++] = TypePtr::NOTNULL; // dest 876 fields[argp++] = TypePtr::NOTNULL; // k array 877 fields[argp++] = TypePtr::NOTNULL; // r array 878 fields[argp++] = TypeInt::INT; // src len 879 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 880 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 881 882 // no result type needed 883 fields = TypeTuple::fields(1); 884 fields[TypeFunc::Parms+0] = NULL; // void 885 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 886 return TypeFunc::make(domain, range); 887} 888 889//------------- Interpreter state access for on stack replacement 890const TypeFunc* OptoRuntime::osr_end_Type() { 891 // create input type (domain) 892 const Type **fields = TypeTuple::fields(1); 893 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 894 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 895 896 // create result type 897 fields = TypeTuple::fields(1); 898 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 899 fields[TypeFunc::Parms+0] = NULL; // void 900 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 901 return TypeFunc::make(domain, range); 902} 903 904//-------------- methodData update helpers 905 906const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 907 // create input type (domain) 908 const Type **fields = TypeTuple::fields(2); 909 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 910 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 911 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 912 913 // create result type 914 fields = TypeTuple::fields(1); 915 fields[TypeFunc::Parms+0] = NULL; // void 916 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 917 return TypeFunc::make(domain,range); 918} 919 920JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 921 if (receiver == NULL) return; 922 Klass* receiver_klass = receiver->klass(); 923 924 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 925 int empty_row = -1; // free row, if any is encountered 926 927 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 928 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 929 // if (vc->receiver(row) == receiver_klass) 930 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 931 intptr_t row_recv = *(mdp + receiver_off); 932 if (row_recv == (intptr_t) receiver_klass) { 933 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 934 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 935 *(mdp + count_off) += DataLayout::counter_increment; 936 return; 937 } else if (row_recv == 0) { 938 // else if (vc->receiver(row) == NULL) 939 empty_row = (int) row; 940 } 941 } 942 943 if (empty_row != -1) { 944 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 945 // vc->set_receiver(empty_row, receiver_klass); 946 *(mdp + receiver_off) = (intptr_t) receiver_klass; 947 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 948 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 949 *(mdp + count_off) = DataLayout::counter_increment; 950 } else { 951 // Receiver did not match any saved receiver and there is no empty row for it. 952 // Increment total counter to indicate polymorphic case. 953 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 954 *count_p += DataLayout::counter_increment; 955 } 956JRT_END 957 958//------------------------------------------------------------------------------------- 959// register policy 960 961bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 962 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 963 switch (register_save_policy[reg]) { 964 case 'C': return false; //SOC 965 case 'E': return true ; //SOE 966 case 'N': return false; //NS 967 case 'A': return false; //AS 968 } 969 ShouldNotReachHere(); 970 return false; 971} 972 973//----------------------------------------------------------------------- 974// Exceptions 975// 976 977static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 978 979// The method is an entry that is always called by a C++ method not 980// directly from compiled code. Compiled code will call the C++ method following. 981// We can't allow async exception to be installed during exception processing. 982JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 983 984 // Do not confuse exception_oop with pending_exception. The exception_oop 985 // is only used to pass arguments into the method. Not for general 986 // exception handling. DO NOT CHANGE IT to use pending_exception, since 987 // the runtime stubs checks this on exit. 988 assert(thread->exception_oop() != NULL, "exception oop is found"); 989 address handler_address = NULL; 990 991 Handle exception(thread, thread->exception_oop()); 992 address pc = thread->exception_pc(); 993 994 // Clear out the exception oop and pc since looking up an 995 // exception handler can cause class loading, which might throw an 996 // exception and those fields are expected to be clear during 997 // normal bytecode execution. 998 thread->clear_exception_oop_and_pc(); 999 1000 if (TraceExceptions) { 1001 trace_exception(exception(), pc, ""); 1002 } 1003 1004 // for AbortVMOnException flag 1005 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 1006 1007#ifdef ASSERT 1008 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1009 // should throw an exception here 1010 ShouldNotReachHere(); 1011 } 1012#endif 1013 1014 // new exception handling: this method is entered only from adapters 1015 // exceptions from compiled java methods are handled in compiled code 1016 // using rethrow node 1017 1018 nm = CodeCache::find_nmethod(pc); 1019 assert(nm != NULL, "No NMethod found"); 1020 if (nm->is_native_method()) { 1021 fatal("Native method should not have path to exception handling"); 1022 } else { 1023 // we are switching to old paradigm: search for exception handler in caller_frame 1024 // instead in exception handler of caller_frame.sender() 1025 1026 if (JvmtiExport::can_post_on_exceptions()) { 1027 // "Full-speed catching" is not necessary here, 1028 // since we're notifying the VM on every catch. 1029 // Force deoptimization and the rest of the lookup 1030 // will be fine. 1031 deoptimize_caller_frame(thread); 1032 } 1033 1034 // Check the stack guard pages. If enabled, look for handler in this frame; 1035 // otherwise, forcibly unwind the frame. 1036 // 1037 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1038 bool force_unwind = !thread->reguard_stack(); 1039 bool deopting = false; 1040 if (nm->is_deopt_pc(pc)) { 1041 deopting = true; 1042 RegisterMap map(thread, false); 1043 frame deoptee = thread->last_frame().sender(&map); 1044 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1045 // Adjust the pc back to the original throwing pc 1046 pc = deoptee.pc(); 1047 } 1048 1049 // If we are forcing an unwind because of stack overflow then deopt is 1050 // irrelevant since we are throwing the frame away anyway. 1051 1052 if (deopting && !force_unwind) { 1053 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1054 } else { 1055 1056 handler_address = 1057 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1058 1059 if (handler_address == NULL) { 1060 Handle original_exception(thread, exception()); 1061 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1062 assert (handler_address != NULL, "must have compiled handler"); 1063 // Update the exception cache only when the unwind was not forced 1064 // and there didn't happen another exception during the computation of the 1065 // compiled exception handler. 1066 if (!force_unwind && original_exception() == exception()) { 1067 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1068 } 1069 } else { 1070 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1071 } 1072 } 1073 1074 thread->set_exception_pc(pc); 1075 thread->set_exception_handler_pc(handler_address); 1076 1077 // Check if the exception PC is a MethodHandle call site. 1078 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1079 } 1080 1081 // Restore correct return pc. Was saved above. 1082 thread->set_exception_oop(exception()); 1083 return handler_address; 1084 1085JRT_END 1086 1087// We are entering here from exception_blob 1088// If there is a compiled exception handler in this method, we will continue there; 1089// otherwise we will unwind the stack and continue at the caller of top frame method 1090// Note we enter without the usual JRT wrapper. We will call a helper routine that 1091// will do the normal VM entry. We do it this way so that we can see if the nmethod 1092// we looked up the handler for has been deoptimized in the meantime. If it has been 1093// we must not use the handler and instead return the deopt blob. 1094address OptoRuntime::handle_exception_C(JavaThread* thread) { 1095// 1096// We are in Java not VM and in debug mode we have a NoHandleMark 1097// 1098#ifndef PRODUCT 1099 SharedRuntime::_find_handler_ctr++; // find exception handler 1100#endif 1101 debug_only(NoHandleMark __hm;) 1102 nmethod* nm = NULL; 1103 address handler_address = NULL; 1104 { 1105 // Enter the VM 1106 1107 ResetNoHandleMark rnhm; 1108 handler_address = handle_exception_C_helper(thread, nm); 1109 } 1110 1111 // Back in java: Use no oops, DON'T safepoint 1112 1113 // Now check to see if the handler we are returning is in a now 1114 // deoptimized frame 1115 1116 if (nm != NULL) { 1117 RegisterMap map(thread, false); 1118 frame caller = thread->last_frame().sender(&map); 1119#ifdef ASSERT 1120 assert(caller.is_compiled_frame(), "must be"); 1121#endif // ASSERT 1122 if (caller.is_deoptimized_frame()) { 1123 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1124 } 1125 } 1126 return handler_address; 1127} 1128 1129//------------------------------rethrow---------------------------------------- 1130// We get here after compiled code has executed a 'RethrowNode'. The callee 1131// is either throwing or rethrowing an exception. The callee-save registers 1132// have been restored, synchronized objects have been unlocked and the callee 1133// stack frame has been removed. The return address was passed in. 1134// Exception oop is passed as the 1st argument. This routine is then called 1135// from the stub. On exit, we know where to jump in the caller's code. 1136// After this C code exits, the stub will pop his frame and end in a jump 1137// (instead of a return). We enter the caller's default handler. 1138// 1139// This must be JRT_LEAF: 1140// - caller will not change its state as we cannot block on exit, 1141// therefore raw_exception_handler_for_return_address is all it takes 1142// to handle deoptimized blobs 1143// 1144// However, there needs to be a safepoint check in the middle! So compiled 1145// safepoints are completely watertight. 1146// 1147// Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1148// 1149// *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1150// 1151address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1152#ifndef PRODUCT 1153 SharedRuntime::_rethrow_ctr++; // count rethrows 1154#endif 1155 assert (exception != NULL, "should have thrown a NULLPointerException"); 1156#ifdef ASSERT 1157 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1158 // should throw an exception here 1159 ShouldNotReachHere(); 1160 } 1161#endif 1162 1163 thread->set_vm_result(exception); 1164 // Frame not compiled (handles deoptimization blob) 1165 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1166} 1167 1168 1169const TypeFunc *OptoRuntime::rethrow_Type() { 1170 // create input type (domain) 1171 const Type **fields = TypeTuple::fields(1); 1172 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1173 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1174 1175 // create result type (range) 1176 fields = TypeTuple::fields(1); 1177 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1178 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1179 1180 return TypeFunc::make(domain, range); 1181} 1182 1183 1184void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1185 // Deoptimize the caller before continuing, as the compiled 1186 // exception handler table may not be valid. 1187 if (!StressCompiledExceptionHandlers && doit) { 1188 deoptimize_caller_frame(thread); 1189 } 1190} 1191 1192void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1193 // Called from within the owner thread, so no need for safepoint 1194 RegisterMap reg_map(thread); 1195 frame stub_frame = thread->last_frame(); 1196 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1197 frame caller_frame = stub_frame.sender(®_map); 1198 1199 // Deoptimize the caller frame. 1200 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1201} 1202 1203 1204bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1205 // Called from within the owner thread, so no need for safepoint 1206 RegisterMap reg_map(thread); 1207 frame stub_frame = thread->last_frame(); 1208 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1209 frame caller_frame = stub_frame.sender(®_map); 1210 return caller_frame.is_deoptimized_frame(); 1211} 1212 1213 1214const TypeFunc *OptoRuntime::register_finalizer_Type() { 1215 // create input type (domain) 1216 const Type **fields = TypeTuple::fields(1); 1217 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1218 // // The JavaThread* is passed to each routine as the last argument 1219 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1220 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1221 1222 // create result type (range) 1223 fields = TypeTuple::fields(0); 1224 1225 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1226 1227 return TypeFunc::make(domain,range); 1228} 1229 1230 1231//----------------------------------------------------------------------------- 1232// Dtrace support. entry and exit probes have the same signature 1233const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1234 // create input type (domain) 1235 const Type **fields = TypeTuple::fields(2); 1236 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1237 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1238 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1239 1240 // create result type (range) 1241 fields = TypeTuple::fields(0); 1242 1243 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1244 1245 return TypeFunc::make(domain,range); 1246} 1247 1248const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1249 // create input type (domain) 1250 const Type **fields = TypeTuple::fields(2); 1251 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1252 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1253 1254 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1255 1256 // create result type (range) 1257 fields = TypeTuple::fields(0); 1258 1259 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1260 1261 return TypeFunc::make(domain,range); 1262} 1263 1264 1265JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1266 assert(obj->is_oop(), "must be a valid oop"); 1267 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1268 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1269JRT_END 1270 1271//----------------------------------------------------------------------------- 1272 1273NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1274 1275// 1276// dump the collected NamedCounters. 1277// 1278void OptoRuntime::print_named_counters() { 1279 int total_lock_count = 0; 1280 int eliminated_lock_count = 0; 1281 1282 NamedCounter* c = _named_counters; 1283 while (c) { 1284 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1285 int count = c->count(); 1286 if (count > 0) { 1287 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1288 if (Verbose) { 1289 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1290 } 1291 total_lock_count += count; 1292 if (eliminated) { 1293 eliminated_lock_count += count; 1294 } 1295 } 1296 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1297 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1298 if (blc->nonzero()) { 1299 tty->print_cr("%s", c->name()); 1300 blc->print_on(tty); 1301 } 1302 } 1303 c = c->next(); 1304 } 1305 if (total_lock_count > 0) { 1306 tty->print_cr("dynamic locks: %d", total_lock_count); 1307 if (eliminated_lock_count) { 1308 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1309 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1310 } 1311 } 1312} 1313 1314// 1315// Allocate a new NamedCounter. The JVMState is used to generate the 1316// name which consists of method@line for the inlining tree. 1317// 1318 1319NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1320 int max_depth = youngest_jvms->depth(); 1321 1322 // Visit scopes from youngest to oldest. 1323 bool first = true; 1324 stringStream st; 1325 for (int depth = max_depth; depth >= 1; depth--) { 1326 JVMState* jvms = youngest_jvms->of_depth(depth); 1327 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1328 if (!first) { 1329 st.print(" "); 1330 } else { 1331 first = false; 1332 } 1333 int bci = jvms->bci(); 1334 if (bci < 0) bci = 0; 1335 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1336 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1337 } 1338 NamedCounter* c; 1339 if (tag == NamedCounter::BiasedLockingCounter) { 1340 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1341 } else { 1342 c = new NamedCounter(strdup(st.as_string()), tag); 1343 } 1344 1345 // atomically add the new counter to the head of the list. We only 1346 // add counters so this is safe. 1347 NamedCounter* head; 1348 do { 1349 head = _named_counters; 1350 c->set_next(head); 1351 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1352 return c; 1353} 1354 1355//----------------------------------------------------------------------------- 1356// Non-product code 1357#ifndef PRODUCT 1358 1359int trace_exception_counter = 0; 1360static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1361 ttyLocker ttyl; 1362 trace_exception_counter++; 1363 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1364 exception_oop->print_value(); 1365 tty->print(" in "); 1366 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1367 if (blob->is_nmethod()) { 1368 nmethod* nm = blob->as_nmethod_or_null(); 1369 nm->method()->print_value(); 1370 } else if (blob->is_runtime_stub()) { 1371 tty->print("<runtime-stub>"); 1372 } else { 1373 tty->print("<unknown>"); 1374 } 1375 tty->print(" at " INTPTR_FORMAT, exception_pc); 1376 tty->print_cr("]"); 1377} 1378 1379#endif // PRODUCT 1380 1381 1382# ifdef ENABLE_ZAP_DEAD_LOCALS 1383// Called from call sites in compiled code with oop maps (actually safepoints) 1384// Zaps dead locals in first java frame. 1385// Is entry because may need to lock to generate oop maps 1386// Currently, only used for compiler frames, but someday may be used 1387// for interpreter frames, too. 1388 1389int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1390 1391// avoid pointers to member funcs with these helpers 1392static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1393static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1394 1395 1396void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1397 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1398 assert(JavaThread::current() == thread, "is this needed?"); 1399 1400 if ( !ZapDeadCompiledLocals ) return; 1401 1402 bool skip = false; 1403 1404 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1405 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1406 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1407 warning("starting zapping after skipping"); 1408 1409 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1410 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1411 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1412 warning("about to zap last zap"); 1413 1414 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1415 1416 if ( skip ) return; 1417 1418 // find java frame and zap it 1419 1420 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1421 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1422 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1423 return; 1424 } 1425 } 1426 warning("no frame found to zap in zap_dead_Java_locals_C"); 1427} 1428 1429JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1430 zap_dead_java_or_native_locals(thread, is_java_frame); 1431JRT_END 1432 1433// The following does not work because for one thing, the 1434// thread state is wrong; it expects java, but it is native. 1435// Also, the invariants in a native stub are different and 1436// I'm not sure it is safe to have a MachCalRuntimeDirectNode 1437// in there. 1438// So for now, we do not zap in native stubs. 1439 1440JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1441 zap_dead_java_or_native_locals(thread, is_native_frame); 1442JRT_END 1443 1444# endif 1445