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/graphKit.hpp" 52 #include "opto/machnode.hpp" 53 #include "opto/matcher.hpp" 54 #include "opto/memnode.hpp" 55 #include "opto/mulnode.hpp" 56 #include "opto/runtime.hpp" 57 #include "opto/subnode.hpp" 58 #include "runtime/fprofiler.hpp" 59 #include "runtime/handles.inline.hpp" 60 #include "runtime/interfaceSupport.hpp" 61 #include "runtime/javaCalls.hpp" 62 #include "runtime/sharedRuntime.hpp" 63 #include "runtime/signature.hpp" 64 #include "runtime/threadCritical.hpp" 65 #include "runtime/vframe.hpp" 66 #include "runtime/vframeArray.hpp" 67 #include "runtime/vframe_hp.hpp" 68 #include "utilities/copy.hpp" 69 #include "utilities/preserveException.hpp" 70 #ifdef TARGET_ARCH_MODEL_x86_32 71 # include "adfiles/ad_x86_32.hpp" 72 #endif 73 #ifdef TARGET_ARCH_MODEL_x86_64 74 # include "adfiles/ad_x86_64.hpp" 75 #endif 76 #ifdef TARGET_ARCH_MODEL_sparc 77 # include "adfiles/ad_sparc.hpp" 78 #endif 79 #ifdef TARGET_ARCH_MODEL_zero 80 # include "adfiles/ad_zero.hpp" 81 #endif 82 #ifdef TARGET_ARCH_MODEL_arm 83 # include "adfiles/ad_arm.hpp" 84 #endif 85 #ifdef TARGET_ARCH_MODEL_ppc_32 86 # include "adfiles/ad_ppc_32.hpp" 87 #endif 88 #ifdef TARGET_ARCH_MODEL_ppc_64 89 # include "adfiles/ad_ppc_64.hpp" 90 #endif 91 92 93 // For debugging purposes: 94 // To force FullGCALot inside a runtime function, add the following two lines 95 // 96 // Universe::release_fullgc_alot_dummy(); 97 // MarkSweep::invoke(0, "Debugging"); 98 // 99 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 100 101 102 103 104 // Compiled code entry points 105 address OptoRuntime::_new_instance_Java = NULL; 106 address OptoRuntime::_new_array_Java = NULL; 107 address OptoRuntime::_new_array_nozero_Java = NULL; 108 address OptoRuntime::_multianewarray2_Java = NULL; 109 address OptoRuntime::_multianewarray3_Java = NULL; 110 address OptoRuntime::_multianewarray4_Java = NULL; 111 address OptoRuntime::_multianewarray5_Java = NULL; 112 address OptoRuntime::_multianewarrayN_Java = NULL; 113 address OptoRuntime::_g1_wb_pre_Java = NULL; 114 address OptoRuntime::_g1_wb_post_Java = NULL; 115 address OptoRuntime::_vtable_must_compile_Java = NULL; 116 address OptoRuntime::_complete_monitor_locking_Java = NULL; 117 address OptoRuntime::_rethrow_Java = NULL; 118 119 address OptoRuntime::_slow_arraycopy_Java = NULL; 120 address OptoRuntime::_register_finalizer_Java = NULL; 121 122 # ifdef ENABLE_ZAP_DEAD_LOCALS 123 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 124 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 125 # endif 126 127 ExceptionBlob* OptoRuntime::_exception_blob; 128 129 // This should be called in an assertion at the start of OptoRuntime routines 130 // which are entered from compiled code (all of them) 131 #ifdef ASSERT 132 static bool check_compiled_frame(JavaThread* thread) { 133 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 134 RegisterMap map(thread, false); 135 frame caller = thread->last_frame().sender(&map); 136 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 137 return true; 138 } 139 #endif // ASSERT 140 141 142 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 143 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc); \ 144 if (var == NULL) { return false; } 145 146 bool OptoRuntime::generate(ciEnv* env) { 147 148 generate_exception_blob(); 149 150 // Note: tls: Means fetching the return oop out of the thread-local storage 151 // 152 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 153 // ------------------------------------------------------------------------------------------------------------------------------- 154 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 155 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 156 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); 157 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 158 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 159 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 160 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 161 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); 162 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 163 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 164 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C, 0, false, false, false); 165 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 166 167 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 168 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 169 170 # ifdef ENABLE_ZAP_DEAD_LOCALS 171 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 172 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 173 # endif 174 return true; 175 } 176 177 #undef gen 178 179 180 // Helper method to do generation of RunTimeStub's 181 address OptoRuntime::generate_stub( ciEnv* env, 182 TypeFunc_generator gen, address C_function, 183 const char *name, int is_fancy_jump, 184 bool pass_tls, 185 bool save_argument_registers, 186 bool return_pc ) { 187 ResourceMark rm; 188 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 189 return C.stub_entry_point(); 190 } 191 192 const char* OptoRuntime::stub_name(address entry) { 193 #ifndef PRODUCT 194 CodeBlob* cb = CodeCache::find_blob(entry); 195 RuntimeStub* rs =(RuntimeStub *)cb; 196 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 197 return rs->name(); 198 #else 199 // Fast implementation for product mode (maybe it should be inlined too) 200 return "runtime stub"; 201 #endif 202 } 203 204 205 //============================================================================= 206 // Opto compiler runtime routines 207 //============================================================================= 208 209 210 //=============================allocation====================================== 211 // We failed the fast-path allocation. Now we need to do a scavenge or GC 212 // and try allocation again. 213 214 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 215 // After any safepoint, just before going back to compiled code, 216 // we inform the GC that we will be doing initializing writes to 217 // this object in the future without emitting card-marks, so 218 // GC may take any compensating steps. 219 // NOTE: Keep this code consistent with GraphKit::store_barrier. 220 221 oop new_obj = thread->vm_result(); 222 if (new_obj == NULL) return; 223 224 assert(Universe::heap()->can_elide_tlab_store_barriers(), 225 "compiler must check this first"); 226 // GC may decide to give back a safer copy of new_obj. 227 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 228 thread->set_vm_result(new_obj); 229 } 230 231 // object allocation 232 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread)) 233 JRT_BLOCK; 234 #ifndef PRODUCT 235 SharedRuntime::_new_instance_ctr++; // new instance requires GC 236 #endif 237 assert(check_compiled_frame(thread), "incorrect caller"); 238 239 // These checks are cheap to make and support reflective allocation. 240 int lh = klass->layout_helper(); 241 if (Klass::layout_helper_needs_slow_path(lh) 242 || !InstanceKlass::cast(klass)->is_initialized()) { 243 KlassHandle kh(THREAD, klass); 244 kh->check_valid_for_instantiation(false, THREAD); 245 if (!HAS_PENDING_EXCEPTION) { 246 InstanceKlass::cast(kh())->initialize(THREAD); 247 } 248 if (!HAS_PENDING_EXCEPTION) { 249 klass = kh(); 250 } else { 251 klass = NULL; 252 } 253 } 254 255 if (klass != NULL) { 256 // Scavenge and allocate an instance. 257 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD); 258 thread->set_vm_result(result); 259 260 // Pass oops back through thread local storage. Our apparent type to Java 261 // is that we return an oop, but we can block on exit from this routine and 262 // a GC can trash the oop in C's return register. The generated stub will 263 // fetch the oop from TLS after any possible GC. 264 } 265 266 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 267 JRT_BLOCK_END; 268 269 if (GraphKit::use_ReduceInitialCardMarks()) { 270 // inform GC that we won't do card marks for initializing writes. 271 new_store_pre_barrier(thread); 272 } 273 JRT_END 274 275 276 // array allocation 277 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread)) 278 JRT_BLOCK; 279 #ifndef PRODUCT 280 SharedRuntime::_new_array_ctr++; // new array requires GC 281 #endif 282 assert(check_compiled_frame(thread), "incorrect caller"); 283 284 // Scavenge and allocate an instance. 285 oop result; 286 287 if (array_type->oop_is_typeArray()) { 288 // The oopFactory likes to work with the element type. 289 // (We could bypass the oopFactory, since it doesn't add much value.) 290 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 291 result = oopFactory::new_typeArray(elem_type, len, THREAD); 292 } else { 293 // Although the oopFactory likes to work with the elem_type, 294 // the compiler prefers the array_type, since it must already have 295 // that latter value in hand for the fast path. 296 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass(); 297 result = oopFactory::new_objArray(elem_type, len, THREAD); 298 } 299 300 // Pass oops back through thread local storage. Our apparent type to Java 301 // is that we return an oop, but we can block on exit from this routine and 302 // a GC can trash the oop in C's return register. The generated stub will 303 // fetch the oop from TLS after any possible GC. 304 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 305 thread->set_vm_result(result); 306 JRT_BLOCK_END; 307 308 if (GraphKit::use_ReduceInitialCardMarks()) { 309 // inform GC that we won't do card marks for initializing writes. 310 new_store_pre_barrier(thread); 311 } 312 JRT_END 313 314 // array allocation without zeroing 315 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread)) 316 JRT_BLOCK; 317 #ifndef PRODUCT 318 SharedRuntime::_new_array_ctr++; // new array requires GC 319 #endif 320 assert(check_compiled_frame(thread), "incorrect caller"); 321 322 // Scavenge and allocate an instance. 323 oop result; 324 325 assert(array_type->oop_is_typeArray(), "should be called only for type array"); 326 // The oopFactory likes to work with the element type. 327 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 328 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); 329 330 // Pass oops back through thread local storage. Our apparent type to Java 331 // is that we return an oop, but we can block on exit from this routine and 332 // a GC can trash the oop in C's return register. The generated stub will 333 // fetch the oop from TLS after any possible GC. 334 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 335 thread->set_vm_result(result); 336 JRT_BLOCK_END; 337 338 if (GraphKit::use_ReduceInitialCardMarks()) { 339 // inform GC that we won't do card marks for initializing writes. 340 new_store_pre_barrier(thread); 341 } 342 343 oop result = thread->vm_result(); 344 if ((len > 0) && (result != NULL) && 345 is_deoptimized_caller_frame(thread)) { 346 // Zero array here if the caller is deoptimized. 347 int size = ((typeArrayOop)result)->object_size(); 348 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 349 const size_t hs = arrayOopDesc::header_size(elem_type); 350 // Align to next 8 bytes to avoid trashing arrays's length. 351 const size_t aligned_hs = align_object_offset(hs); 352 HeapWord* obj = (HeapWord*)result; 353 if (aligned_hs > hs) { 354 Copy::zero_to_words(obj+hs, aligned_hs-hs); 355 } 356 // Optimized zeroing. 357 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); 358 } 359 360 JRT_END 361 362 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 363 364 // multianewarray for 2 dimensions 365 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread)) 366 #ifndef PRODUCT 367 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 368 #endif 369 assert(check_compiled_frame(thread), "incorrect caller"); 370 assert(elem_type->is_klass(), "not a class"); 371 jint dims[2]; 372 dims[0] = len1; 373 dims[1] = len2; 374 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 375 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 376 thread->set_vm_result(obj); 377 JRT_END 378 379 // multianewarray for 3 dimensions 380 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread)) 381 #ifndef PRODUCT 382 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 383 #endif 384 assert(check_compiled_frame(thread), "incorrect caller"); 385 assert(elem_type->is_klass(), "not a class"); 386 jint dims[3]; 387 dims[0] = len1; 388 dims[1] = len2; 389 dims[2] = len3; 390 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 391 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 392 thread->set_vm_result(obj); 393 JRT_END 394 395 // multianewarray for 4 dimensions 396 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 397 #ifndef PRODUCT 398 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 399 #endif 400 assert(check_compiled_frame(thread), "incorrect caller"); 401 assert(elem_type->is_klass(), "not a class"); 402 jint dims[4]; 403 dims[0] = len1; 404 dims[1] = len2; 405 dims[2] = len3; 406 dims[3] = len4; 407 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 408 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 409 thread->set_vm_result(obj); 410 JRT_END 411 412 // multianewarray for 5 dimensions 413 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 414 #ifndef PRODUCT 415 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 416 #endif 417 assert(check_compiled_frame(thread), "incorrect caller"); 418 assert(elem_type->is_klass(), "not a class"); 419 jint dims[5]; 420 dims[0] = len1; 421 dims[1] = len2; 422 dims[2] = len3; 423 dims[3] = len4; 424 dims[4] = len5; 425 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 426 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 427 thread->set_vm_result(obj); 428 JRT_END 429 430 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread)) 431 assert(check_compiled_frame(thread), "incorrect caller"); 432 assert(elem_type->is_klass(), "not a class"); 433 assert(oop(dims)->is_typeArray(), "not an array"); 434 435 ResourceMark rm; 436 jint len = dims->length(); 437 assert(len > 0, "Dimensions array should contain data"); 438 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); 439 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); 440 Copy::conjoint_jints_atomic(j_dims, c_dims, len); 441 442 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); 443 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 444 thread->set_vm_result(obj); 445 JRT_END 446 447 448 const TypeFunc *OptoRuntime::new_instance_Type() { 449 // create input type (domain) 450 const Type **fields = TypeTuple::fields(1); 451 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 452 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 453 454 // create result type (range) 455 fields = TypeTuple::fields(1); 456 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 457 458 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 459 460 return TypeFunc::make(domain, range); 461 } 462 463 464 const TypeFunc *OptoRuntime::athrow_Type() { 465 // create input type (domain) 466 const Type **fields = TypeTuple::fields(1); 467 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 468 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 469 470 // create result type (range) 471 fields = TypeTuple::fields(0); 472 473 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 474 475 return TypeFunc::make(domain, range); 476 } 477 478 479 const TypeFunc *OptoRuntime::new_array_Type() { 480 // create input type (domain) 481 const Type **fields = TypeTuple::fields(2); 482 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 483 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 484 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 485 486 // create result type (range) 487 fields = TypeTuple::fields(1); 488 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 489 490 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 491 492 return TypeFunc::make(domain, range); 493 } 494 495 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 496 // create input type (domain) 497 const int nargs = ndim + 1; 498 const Type **fields = TypeTuple::fields(nargs); 499 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 500 for( int i = 1; i < nargs; i++ ) 501 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 502 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 503 504 // create result type (range) 505 fields = TypeTuple::fields(1); 506 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 507 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 508 509 return TypeFunc::make(domain, range); 510 } 511 512 const TypeFunc *OptoRuntime::multianewarray2_Type() { 513 return multianewarray_Type(2); 514 } 515 516 const TypeFunc *OptoRuntime::multianewarray3_Type() { 517 return multianewarray_Type(3); 518 } 519 520 const TypeFunc *OptoRuntime::multianewarray4_Type() { 521 return multianewarray_Type(4); 522 } 523 524 const TypeFunc *OptoRuntime::multianewarray5_Type() { 525 return multianewarray_Type(5); 526 } 527 528 const TypeFunc *OptoRuntime::multianewarrayN_Type() { 529 // create input type (domain) 530 const Type **fields = TypeTuple::fields(2); 531 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 532 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes 533 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 534 535 // create result type (range) 536 fields = TypeTuple::fields(1); 537 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 538 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 539 540 return TypeFunc::make(domain, range); 541 } 542 543 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 544 const Type **fields = TypeTuple::fields(2); 545 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 546 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 547 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 548 549 // create result type (range) 550 fields = TypeTuple::fields(0); 551 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 552 553 return TypeFunc::make(domain, range); 554 } 555 556 const TypeFunc *OptoRuntime::g1_wb_post_Type() { 557 558 const Type **fields = TypeTuple::fields(2); 559 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 560 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 561 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 562 563 // create result type (range) 564 fields = TypeTuple::fields(0); 565 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 566 567 return TypeFunc::make(domain, range); 568 } 569 570 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 571 // create input type (domain) 572 const Type **fields = TypeTuple::fields(1); 573 fields[TypeFunc::Parms+0] = TypeInt::INT; // trap_reason (deopt reason and action) 574 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 575 576 // create result type (range) 577 fields = TypeTuple::fields(0); 578 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 579 580 return TypeFunc::make(domain, range); 581 } 582 583 # ifdef ENABLE_ZAP_DEAD_LOCALS 584 // Type used for stub generation for zap_dead_locals. 585 // No inputs or outputs 586 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 587 // create input type (domain) 588 const Type **fields = TypeTuple::fields(0); 589 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 590 591 // create result type (range) 592 fields = TypeTuple::fields(0); 593 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 594 595 return TypeFunc::make(domain,range); 596 } 597 # endif 598 599 600 //----------------------------------------------------------------------------- 601 // Monitor Handling 602 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 603 // create input type (domain) 604 const Type **fields = TypeTuple::fields(2); 605 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 606 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 607 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 608 609 // create result type (range) 610 fields = TypeTuple::fields(0); 611 612 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 613 614 return TypeFunc::make(domain,range); 615 } 616 617 618 //----------------------------------------------------------------------------- 619 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 620 // create input type (domain) 621 const Type **fields = TypeTuple::fields(2); 622 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 623 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 624 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 625 626 // create result type (range) 627 fields = TypeTuple::fields(0); 628 629 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 630 631 return TypeFunc::make(domain,range); 632 } 633 634 const TypeFunc* OptoRuntime::flush_windows_Type() { 635 // create input type (domain) 636 const Type** fields = TypeTuple::fields(1); 637 fields[TypeFunc::Parms+0] = NULL; // void 638 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 639 640 // create result type 641 fields = TypeTuple::fields(1); 642 fields[TypeFunc::Parms+0] = NULL; // void 643 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 644 645 return TypeFunc::make(domain, range); 646 } 647 648 const TypeFunc* OptoRuntime::l2f_Type() { 649 // create input type (domain) 650 const Type **fields = TypeTuple::fields(2); 651 fields[TypeFunc::Parms+0] = TypeLong::LONG; 652 fields[TypeFunc::Parms+1] = Type::HALF; 653 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 654 655 // create result type (range) 656 fields = TypeTuple::fields(1); 657 fields[TypeFunc::Parms+0] = Type::FLOAT; 658 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 659 660 return TypeFunc::make(domain, range); 661 } 662 663 const TypeFunc* OptoRuntime::modf_Type() { 664 const Type **fields = TypeTuple::fields(2); 665 fields[TypeFunc::Parms+0] = Type::FLOAT; 666 fields[TypeFunc::Parms+1] = Type::FLOAT; 667 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 668 669 // create result type (range) 670 fields = TypeTuple::fields(1); 671 fields[TypeFunc::Parms+0] = Type::FLOAT; 672 673 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 674 675 return TypeFunc::make(domain, range); 676 } 677 678 const TypeFunc *OptoRuntime::Math_D_D_Type() { 679 // create input type (domain) 680 const Type **fields = TypeTuple::fields(2); 681 // Symbol* name of class to be loaded 682 fields[TypeFunc::Parms+0] = Type::DOUBLE; 683 fields[TypeFunc::Parms+1] = Type::HALF; 684 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 685 686 // create result type (range) 687 fields = TypeTuple::fields(2); 688 fields[TypeFunc::Parms+0] = Type::DOUBLE; 689 fields[TypeFunc::Parms+1] = Type::HALF; 690 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 691 692 return TypeFunc::make(domain, range); 693 } 694 695 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 696 const Type **fields = TypeTuple::fields(4); 697 fields[TypeFunc::Parms+0] = Type::DOUBLE; 698 fields[TypeFunc::Parms+1] = Type::HALF; 699 fields[TypeFunc::Parms+2] = Type::DOUBLE; 700 fields[TypeFunc::Parms+3] = Type::HALF; 701 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 702 703 // create result type (range) 704 fields = TypeTuple::fields(2); 705 fields[TypeFunc::Parms+0] = Type::DOUBLE; 706 fields[TypeFunc::Parms+1] = Type::HALF; 707 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 708 709 return TypeFunc::make(domain, range); 710 } 711 712 //-------------- currentTimeMillis, currentTimeNanos, etc 713 714 const TypeFunc* OptoRuntime::void_long_Type() { 715 // create input type (domain) 716 const Type **fields = TypeTuple::fields(0); 717 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 718 719 // create result type (range) 720 fields = TypeTuple::fields(2); 721 fields[TypeFunc::Parms+0] = TypeLong::LONG; 722 fields[TypeFunc::Parms+1] = Type::HALF; 723 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 724 725 return TypeFunc::make(domain, range); 726 } 727 728 // arraycopy stub variations: 729 enum ArrayCopyType { 730 ac_fast, // void(ptr, ptr, size_t) 731 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 732 ac_slow, // void(ptr, int, ptr, int, int) 733 ac_generic // int(ptr, int, ptr, int, int) 734 }; 735 736 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 737 // create input type (domain) 738 int num_args = (act == ac_fast ? 3 : 5); 739 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 740 int argcnt = num_args; 741 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 742 const Type** fields = TypeTuple::fields(argcnt); 743 int argp = TypeFunc::Parms; 744 fields[argp++] = TypePtr::NOTNULL; // src 745 if (num_size_args == 0) { 746 fields[argp++] = TypeInt::INT; // src_pos 747 } 748 fields[argp++] = TypePtr::NOTNULL; // dest 749 if (num_size_args == 0) { 750 fields[argp++] = TypeInt::INT; // dest_pos 751 fields[argp++] = TypeInt::INT; // length 752 } 753 while (num_size_args-- > 0) { 754 fields[argp++] = TypeX_X; // size in whatevers (size_t) 755 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 756 } 757 if (act == ac_checkcast) { 758 fields[argp++] = TypePtr::NOTNULL; // super_klass 759 } 760 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 761 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 762 763 // create result type if needed 764 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 765 fields = TypeTuple::fields(1); 766 if (retcnt == 0) 767 fields[TypeFunc::Parms+0] = NULL; // void 768 else 769 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 770 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 771 return TypeFunc::make(domain, range); 772 } 773 774 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 775 // This signature is simple: Two base pointers and a size_t. 776 return make_arraycopy_Type(ac_fast); 777 } 778 779 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 780 // An extension of fast_arraycopy_Type which adds type checking. 781 return make_arraycopy_Type(ac_checkcast); 782 } 783 784 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 785 // This signature is exactly the same as System.arraycopy. 786 // There are no intptr_t (int/long) arguments. 787 return make_arraycopy_Type(ac_slow); 788 } 789 790 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 791 // This signature is like System.arraycopy, except that it returns status. 792 return make_arraycopy_Type(ac_generic); 793 } 794 795 796 const TypeFunc* OptoRuntime::array_fill_Type() { 797 const Type** fields; 798 int argp = TypeFunc::Parms; 799 if (CCallingConventionRequiresIntsAsLongs) { 800 // create input type (domain): pointer, int, size_t 801 fields = TypeTuple::fields(3 LP64_ONLY( + 2)); 802 fields[argp++] = TypePtr::NOTNULL; 803 fields[argp++] = TypeLong::LONG; 804 fields[argp++] = Type::HALF; 805 } else { 806 // create input type (domain): pointer, int, size_t 807 fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 808 fields[argp++] = TypePtr::NOTNULL; 809 fields[argp++] = TypeInt::INT; 810 } 811 fields[argp++] = TypeX_X; // size in whatevers (size_t) 812 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 813 const TypeTuple *domain = TypeTuple::make(argp, fields); 814 815 // create result type 816 fields = TypeTuple::fields(1); 817 fields[TypeFunc::Parms+0] = NULL; // void 818 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 819 820 return TypeFunc::make(domain, range); 821 } 822 823 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant) 824 const TypeFunc* OptoRuntime::aescrypt_block_Type() { 825 // create input type (domain) 826 int num_args = 3; 827 if (Matcher::pass_original_key_for_aes()) { 828 num_args = 4; 829 } 830 int argcnt = num_args; 831 const Type** fields = TypeTuple::fields(argcnt); 832 int argp = TypeFunc::Parms; 833 fields[argp++] = TypePtr::NOTNULL; // src 834 fields[argp++] = TypePtr::NOTNULL; // dest 835 fields[argp++] = TypePtr::NOTNULL; // k array 836 if (Matcher::pass_original_key_for_aes()) { 837 fields[argp++] = TypePtr::NOTNULL; // original k array 838 } 839 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 840 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 841 842 // no result type needed 843 fields = TypeTuple::fields(1); 844 fields[TypeFunc::Parms+0] = NULL; // void 845 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 846 return TypeFunc::make(domain, range); 847 } 848 849 /** 850 * int updateBytesCRC32(int crc, byte* b, int len) 851 */ 852 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() { 853 // create input type (domain) 854 int num_args = 3; 855 int argcnt = num_args; 856 const Type** fields = TypeTuple::fields(argcnt); 857 int argp = TypeFunc::Parms; 858 fields[argp++] = TypeInt::INT; // crc 859 fields[argp++] = TypePtr::NOTNULL; // src 860 fields[argp++] = TypeInt::INT; // len 861 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 862 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 863 864 // result type needed 865 fields = TypeTuple::fields(1); 866 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 867 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 868 return TypeFunc::make(domain, range); 869 } 870 871 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void 872 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 873 // create input type (domain) 874 int num_args = 5; 875 if (Matcher::pass_original_key_for_aes()) { 876 num_args = 6; 877 } 878 int argcnt = num_args; 879 const Type** fields = TypeTuple::fields(argcnt); 880 int argp = TypeFunc::Parms; 881 fields[argp++] = TypePtr::NOTNULL; // src 882 fields[argp++] = TypePtr::NOTNULL; // dest 883 fields[argp++] = TypePtr::NOTNULL; // k array 884 fields[argp++] = TypePtr::NOTNULL; // r array 885 fields[argp++] = TypeInt::INT; // src len 886 if (Matcher::pass_original_key_for_aes()) { 887 fields[argp++] = TypePtr::NOTNULL; // original k array 888 } 889 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 890 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 891 892 // returning cipher len (int) 893 fields = TypeTuple::fields(1); 894 fields[TypeFunc::Parms+0] = TypeInt::INT; 895 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 896 return TypeFunc::make(domain, range); 897 } 898 899 //------------- Interpreter state access for on stack replacement 900 const TypeFunc* OptoRuntime::osr_end_Type() { 901 // create input type (domain) 902 const Type **fields = TypeTuple::fields(1); 903 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 904 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 905 906 // create result type 907 fields = TypeTuple::fields(1); 908 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 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 //-------------- methodData update helpers 915 916 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 917 // create input type (domain) 918 const Type **fields = TypeTuple::fields(2); 919 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 920 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 921 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 922 923 // create result type 924 fields = TypeTuple::fields(1); 925 fields[TypeFunc::Parms+0] = NULL; // void 926 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 927 return TypeFunc::make(domain,range); 928 } 929 930 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 931 if (receiver == NULL) return; 932 Klass* receiver_klass = receiver->klass(); 933 934 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 935 int empty_row = -1; // free row, if any is encountered 936 937 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 938 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 939 // if (vc->receiver(row) == receiver_klass) 940 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 941 intptr_t row_recv = *(mdp + receiver_off); 942 if (row_recv == (intptr_t) receiver_klass) { 943 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 944 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 945 *(mdp + count_off) += DataLayout::counter_increment; 946 return; 947 } else if (row_recv == 0) { 948 // else if (vc->receiver(row) == NULL) 949 empty_row = (int) row; 950 } 951 } 952 953 if (empty_row != -1) { 954 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 955 // vc->set_receiver(empty_row, receiver_klass); 956 *(mdp + receiver_off) = (intptr_t) receiver_klass; 957 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 958 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 959 *(mdp + count_off) = DataLayout::counter_increment; 960 } else { 961 // Receiver did not match any saved receiver and there is no empty row for it. 962 // Increment total counter to indicate polymorphic case. 963 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 964 *count_p += DataLayout::counter_increment; 965 } 966 JRT_END 967 968 //------------------------------------------------------------------------------------- 969 // register policy 970 971 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 972 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 973 switch (register_save_policy[reg]) { 974 case 'C': return false; //SOC 975 case 'E': return true ; //SOE 976 case 'N': return false; //NS 977 case 'A': return false; //AS 978 } 979 ShouldNotReachHere(); 980 return false; 981 } 982 983 //----------------------------------------------------------------------- 984 // Exceptions 985 // 986 987 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 988 989 // The method is an entry that is always called by a C++ method not 990 // directly from compiled code. Compiled code will call the C++ method following. 991 // We can't allow async exception to be installed during exception processing. 992 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 993 994 // Do not confuse exception_oop with pending_exception. The exception_oop 995 // is only used to pass arguments into the method. Not for general 996 // exception handling. DO NOT CHANGE IT to use pending_exception, since 997 // the runtime stubs checks this on exit. 998 assert(thread->exception_oop() != NULL, "exception oop is found"); 999 address handler_address = NULL; 1000 1001 Handle exception(thread, thread->exception_oop()); 1002 address pc = thread->exception_pc(); 1003 1004 // Clear out the exception oop and pc since looking up an 1005 // exception handler can cause class loading, which might throw an 1006 // exception and those fields are expected to be clear during 1007 // normal bytecode execution. 1008 thread->clear_exception_oop_and_pc(); 1009 1010 if (TraceExceptions) { 1011 trace_exception(exception(), pc, ""); 1012 } 1013 1014 // for AbortVMOnException flag 1015 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 1016 1017 #ifdef ASSERT 1018 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1019 // should throw an exception here 1020 ShouldNotReachHere(); 1021 } 1022 #endif 1023 1024 // new exception handling: this method is entered only from adapters 1025 // exceptions from compiled java methods are handled in compiled code 1026 // using rethrow node 1027 1028 nm = CodeCache::find_nmethod(pc); 1029 assert(nm != NULL, "No NMethod found"); 1030 if (nm->is_native_method()) { 1031 fatal("Native method should not have path to exception handling"); 1032 } else { 1033 // we are switching to old paradigm: search for exception handler in caller_frame 1034 // instead in exception handler of caller_frame.sender() 1035 1036 if (JvmtiExport::can_post_on_exceptions()) { 1037 // "Full-speed catching" is not necessary here, 1038 // since we're notifying the VM on every catch. 1039 // Force deoptimization and the rest of the lookup 1040 // will be fine. 1041 deoptimize_caller_frame(thread); 1042 } 1043 1044 // Check the stack guard pages. If enabled, look for handler in this frame; 1045 // otherwise, forcibly unwind the frame. 1046 // 1047 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1048 bool force_unwind = !thread->reguard_stack(); 1049 bool deopting = false; 1050 if (nm->is_deopt_pc(pc)) { 1051 deopting = true; 1052 RegisterMap map(thread, false); 1053 frame deoptee = thread->last_frame().sender(&map); 1054 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1055 // Adjust the pc back to the original throwing pc 1056 pc = deoptee.pc(); 1057 } 1058 1059 // If we are forcing an unwind because of stack overflow then deopt is 1060 // irrelevant since we are throwing the frame away anyway. 1061 1062 if (deopting && !force_unwind) { 1063 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1064 } else { 1065 1066 handler_address = 1067 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1068 1069 if (handler_address == NULL) { 1070 Handle original_exception(thread, exception()); 1071 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1072 assert (handler_address != NULL, "must have compiled handler"); 1073 // Update the exception cache only when the unwind was not forced 1074 // and there didn't happen another exception during the computation of the 1075 // compiled exception handler. 1076 if (!force_unwind && original_exception() == exception()) { 1077 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1078 } 1079 } else { 1080 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1081 } 1082 } 1083 1084 thread->set_exception_pc(pc); 1085 thread->set_exception_handler_pc(handler_address); 1086 1087 // Check if the exception PC is a MethodHandle call site. 1088 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1089 } 1090 1091 // Restore correct return pc. Was saved above. 1092 thread->set_exception_oop(exception()); 1093 return handler_address; 1094 1095 JRT_END 1096 1097 // We are entering here from exception_blob 1098 // If there is a compiled exception handler in this method, we will continue there; 1099 // otherwise we will unwind the stack and continue at the caller of top frame method 1100 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1101 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1102 // we looked up the handler for has been deoptimized in the meantime. If it has been 1103 // we must not use the handler and instead return the deopt blob. 1104 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1105 // 1106 // We are in Java not VM and in debug mode we have a NoHandleMark 1107 // 1108 #ifndef PRODUCT 1109 SharedRuntime::_find_handler_ctr++; // find exception handler 1110 #endif 1111 debug_only(NoHandleMark __hm;) 1112 nmethod* nm = NULL; 1113 address handler_address = NULL; 1114 { 1115 // Enter the VM 1116 1117 ResetNoHandleMark rnhm; 1118 handler_address = handle_exception_C_helper(thread, nm); 1119 } 1120 1121 // Back in java: Use no oops, DON'T safepoint 1122 1123 // Now check to see if the handler we are returning is in a now 1124 // deoptimized frame 1125 1126 if (nm != NULL) { 1127 RegisterMap map(thread, false); 1128 frame caller = thread->last_frame().sender(&map); 1129 #ifdef ASSERT 1130 assert(caller.is_compiled_frame(), "must be"); 1131 #endif // ASSERT 1132 if (caller.is_deoptimized_frame()) { 1133 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1134 } 1135 } 1136 return handler_address; 1137 } 1138 1139 //------------------------------rethrow---------------------------------------- 1140 // We get here after compiled code has executed a 'RethrowNode'. The callee 1141 // is either throwing or rethrowing an exception. The callee-save registers 1142 // have been restored, synchronized objects have been unlocked and the callee 1143 // stack frame has been removed. The return address was passed in. 1144 // Exception oop is passed as the 1st argument. This routine is then called 1145 // from the stub. On exit, we know where to jump in the caller's code. 1146 // After this C code exits, the stub will pop his frame and end in a jump 1147 // (instead of a return). We enter the caller's default handler. 1148 // 1149 // This must be JRT_LEAF: 1150 // - caller will not change its state as we cannot block on exit, 1151 // therefore raw_exception_handler_for_return_address is all it takes 1152 // to handle deoptimized blobs 1153 // 1154 // However, there needs to be a safepoint check in the middle! So compiled 1155 // safepoints are completely watertight. 1156 // 1157 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1158 // 1159 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1160 // 1161 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1162 #ifndef PRODUCT 1163 SharedRuntime::_rethrow_ctr++; // count rethrows 1164 #endif 1165 assert (exception != NULL, "should have thrown a NULLPointerException"); 1166 #ifdef ASSERT 1167 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1168 // should throw an exception here 1169 ShouldNotReachHere(); 1170 } 1171 #endif 1172 1173 thread->set_vm_result(exception); 1174 // Frame not compiled (handles deoptimization blob) 1175 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1176 } 1177 1178 1179 const TypeFunc *OptoRuntime::rethrow_Type() { 1180 // create input type (domain) 1181 const Type **fields = TypeTuple::fields(1); 1182 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1183 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1184 1185 // create result type (range) 1186 fields = TypeTuple::fields(1); 1187 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1188 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1189 1190 return TypeFunc::make(domain, range); 1191 } 1192 1193 1194 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1195 // Deoptimize the caller before continuing, as the compiled 1196 // exception handler table may not be valid. 1197 if (!StressCompiledExceptionHandlers && doit) { 1198 deoptimize_caller_frame(thread); 1199 } 1200 } 1201 1202 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1203 // Called from within the owner thread, so no need for safepoint 1204 RegisterMap reg_map(thread); 1205 frame stub_frame = thread->last_frame(); 1206 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1207 frame caller_frame = stub_frame.sender(®_map); 1208 1209 // Deoptimize the caller frame. 1210 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1211 } 1212 1213 1214 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1215 // Called from within the owner thread, so no need for safepoint 1216 RegisterMap reg_map(thread); 1217 frame stub_frame = thread->last_frame(); 1218 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1219 frame caller_frame = stub_frame.sender(®_map); 1220 return caller_frame.is_deoptimized_frame(); 1221 } 1222 1223 1224 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1225 // create input type (domain) 1226 const Type **fields = TypeTuple::fields(1); 1227 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1228 // // The JavaThread* is passed to each routine as the last argument 1229 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1230 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1231 1232 // create result type (range) 1233 fields = TypeTuple::fields(0); 1234 1235 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1236 1237 return TypeFunc::make(domain,range); 1238 } 1239 1240 1241 //----------------------------------------------------------------------------- 1242 // Dtrace support. entry and exit probes have the same signature 1243 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1244 // create input type (domain) 1245 const Type **fields = TypeTuple::fields(2); 1246 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1247 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1248 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1249 1250 // create result type (range) 1251 fields = TypeTuple::fields(0); 1252 1253 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1254 1255 return TypeFunc::make(domain,range); 1256 } 1257 1258 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1259 // create input type (domain) 1260 const Type **fields = TypeTuple::fields(2); 1261 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1262 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1263 1264 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1265 1266 // create result type (range) 1267 fields = TypeTuple::fields(0); 1268 1269 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1270 1271 return TypeFunc::make(domain,range); 1272 } 1273 1274 1275 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1276 assert(obj->is_oop(), "must be a valid oop"); 1277 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1278 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1279 JRT_END 1280 1281 //----------------------------------------------------------------------------- 1282 1283 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1284 1285 // 1286 // dump the collected NamedCounters. 1287 // 1288 void OptoRuntime::print_named_counters() { 1289 int total_lock_count = 0; 1290 int eliminated_lock_count = 0; 1291 1292 NamedCounter* c = _named_counters; 1293 while (c) { 1294 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1295 int count = c->count(); 1296 if (count > 0) { 1297 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1298 if (Verbose) { 1299 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1300 } 1301 total_lock_count += count; 1302 if (eliminated) { 1303 eliminated_lock_count += count; 1304 } 1305 } 1306 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1307 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1308 if (blc->nonzero()) { 1309 tty->print_cr("%s", c->name()); 1310 blc->print_on(tty); 1311 } 1312 #if INCLUDE_RTM_OPT 1313 } else if (c->tag() == NamedCounter::RTMLockingCounter) { 1314 RTMLockingCounters* rlc = ((RTMLockingNamedCounter*)c)->counters(); 1315 if (rlc->nonzero()) { 1316 tty->print_cr("%s", c->name()); 1317 rlc->print_on(tty); 1318 } 1319 #endif 1320 } 1321 c = c->next(); 1322 } 1323 if (total_lock_count > 0) { 1324 tty->print_cr("dynamic locks: %d", total_lock_count); 1325 if (eliminated_lock_count) { 1326 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1327 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1328 } 1329 } 1330 } 1331 1332 // 1333 // Allocate a new NamedCounter. The JVMState is used to generate the 1334 // name which consists of method@line for the inlining tree. 1335 // 1336 1337 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1338 int max_depth = youngest_jvms->depth(); 1339 1340 // Visit scopes from youngest to oldest. 1341 bool first = true; 1342 stringStream st; 1343 for (int depth = max_depth; depth >= 1; depth--) { 1344 JVMState* jvms = youngest_jvms->of_depth(depth); 1345 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1346 if (!first) { 1347 st.print(" "); 1348 } else { 1349 first = false; 1350 } 1351 int bci = jvms->bci(); 1352 if (bci < 0) bci = 0; 1353 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1354 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1355 } 1356 NamedCounter* c; 1357 if (tag == NamedCounter::BiasedLockingCounter) { 1358 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1359 } else if (tag == NamedCounter::RTMLockingCounter) { 1360 c = new RTMLockingNamedCounter(strdup(st.as_string())); 1361 } else { 1362 c = new NamedCounter(strdup(st.as_string()), tag); 1363 } 1364 1365 // atomically add the new counter to the head of the list. We only 1366 // add counters so this is safe. 1367 NamedCounter* head; 1368 do { 1369 c->set_next(NULL); 1370 head = _named_counters; 1371 c->set_next(head); 1372 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1373 return c; 1374 } 1375 1376 //----------------------------------------------------------------------------- 1377 // Non-product code 1378 #ifndef PRODUCT 1379 1380 int trace_exception_counter = 0; 1381 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1382 ttyLocker ttyl; 1383 trace_exception_counter++; 1384 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1385 exception_oop->print_value(); 1386 tty->print(" in "); 1387 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1388 if (blob->is_nmethod()) { 1389 nmethod* nm = blob->as_nmethod_or_null(); 1390 nm->method()->print_value(); 1391 } else if (blob->is_runtime_stub()) { 1392 tty->print("<runtime-stub>"); 1393 } else { 1394 tty->print("<unknown>"); 1395 } 1396 tty->print(" at " INTPTR_FORMAT, exception_pc); 1397 tty->print_cr("]"); 1398 } 1399 1400 #endif // PRODUCT 1401 1402 1403 # ifdef ENABLE_ZAP_DEAD_LOCALS 1404 // Called from call sites in compiled code with oop maps (actually safepoints) 1405 // Zaps dead locals in first java frame. 1406 // Is entry because may need to lock to generate oop maps 1407 // Currently, only used for compiler frames, but someday may be used 1408 // for interpreter frames, too. 1409 1410 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1411 1412 // avoid pointers to member funcs with these helpers 1413 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1414 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1415 1416 1417 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1418 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1419 assert(JavaThread::current() == thread, "is this needed?"); 1420 1421 if ( !ZapDeadCompiledLocals ) return; 1422 1423 bool skip = false; 1424 1425 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1426 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1427 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1428 warning("starting zapping after skipping"); 1429 1430 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1431 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1432 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1433 warning("about to zap last zap"); 1434 1435 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1436 1437 if ( skip ) return; 1438 1439 // find java frame and zap it 1440 1441 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1442 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1443 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1444 return; 1445 } 1446 } 1447 warning("no frame found to zap in zap_dead_Java_locals_C"); 1448 } 1449 1450 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1451 zap_dead_java_or_native_locals(thread, is_java_frame); 1452 JRT_END 1453 1454 // The following does not work because for one thing, the 1455 // thread state is wrong; it expects java, but it is native. 1456 // Also, the invariants in a native stub are different and 1457 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1458 // in there. 1459 // So for now, we do not zap in native stubs. 1460 1461 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1462 zap_dead_java_or_native_locals(thread, is_native_frame); 1463 JRT_END 1464 1465 # endif