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/constnode.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 106 address OptoRuntime::_new_instance_Java = NULL; 107 address OptoRuntime::_new_array_Java = NULL; 108 address OptoRuntime::_new_array_nozero_Java = NULL; 109 address OptoRuntime::_multianewarray2_Java = NULL; 110 address OptoRuntime::_multianewarray3_Java = NULL; 111 address OptoRuntime::_multianewarray4_Java = NULL; 112 address OptoRuntime::_multianewarray5_Java = NULL; 113 address OptoRuntime::_multianewarrayN_Java = NULL; 114 address OptoRuntime::_g1_wb_pre_Java = NULL; 115 address OptoRuntime::_g1_wb_post_Java = NULL; 116 address OptoRuntime::_vtable_must_compile_Java = NULL; 117 address OptoRuntime::_complete_monitor_locking_Java = NULL; 118 address OptoRuntime::_rethrow_Java = NULL; 119 120 address OptoRuntime::_slow_arraycopy_Java = NULL; 121 address OptoRuntime::_register_finalizer_Java = NULL; 122 123 # ifdef ENABLE_ZAP_DEAD_LOCALS 124 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 125 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 126 # endif 127 128 ExceptionBlob* 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 133 static 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; } 146 147 bool 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 182 address 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 } 192 193 const 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. 214 215 void 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 233 JRT_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 } 274 JRT_END 275 276 277 // array allocation 278 JRT_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 } 313 JRT_END 314 315 // array allocation without zeroing 316 JRT_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 } 360 361 JRT_END 362 363 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 364 365 // multianewarray for 2 dimensions 366 JRT_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); 378 JRT_END 379 380 // multianewarray for 3 dimensions 381 JRT_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); 394 JRT_END 395 396 // multianewarray for 4 dimensions 397 JRT_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); 411 JRT_END 412 413 // multianewarray for 5 dimensions 414 JRT_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); 429 JRT_END 430 431 JRT_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); 446 JRT_END 447 448 449 const 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 } 463 464 465 const 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 } 478 479 480 const 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 } 495 496 const 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 } 512 513 const TypeFunc *OptoRuntime::multianewarray2_Type() { 514 return multianewarray_Type(2); 515 } 516 517 const TypeFunc *OptoRuntime::multianewarray3_Type() { 518 return multianewarray_Type(3); 519 } 520 521 const TypeFunc *OptoRuntime::multianewarray4_Type() { 522 return multianewarray_Type(4); 523 } 524 525 const TypeFunc *OptoRuntime::multianewarray5_Type() { 526 return multianewarray_Type(5); 527 } 528 529 const 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 } 543 544 const 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 } 556 557 const 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 } 570 571 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 572 // create input type (domain) 573 const Type **fields = TypeTuple::fields(1); 574 fields[TypeFunc::Parms+0] = TypeInt::INT; // trap_reason (deopt reason and action) 575 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 576 577 // create result type (range) 578 fields = TypeTuple::fields(0); 579 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 580 581 return TypeFunc::make(domain, range); 582 } 583 584 # ifdef ENABLE_ZAP_DEAD_LOCALS 585 // Type used for stub generation for zap_dead_locals. 586 // No inputs or outputs 587 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 588 // create input type (domain) 589 const Type **fields = TypeTuple::fields(0); 590 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 591 592 // create result type (range) 593 fields = TypeTuple::fields(0); 594 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 595 596 return TypeFunc::make(domain,range); 597 } 598 # endif 599 600 601 //----------------------------------------------------------------------------- 602 // Monitor Handling 603 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 604 // create input type (domain) 605 const Type **fields = TypeTuple::fields(2); 606 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 607 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 608 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 609 610 // create result type (range) 611 fields = TypeTuple::fields(0); 612 613 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 614 615 return TypeFunc::make(domain,range); 616 } 617 618 619 //----------------------------------------------------------------------------- 620 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 621 // create input type (domain) 622 const Type **fields = TypeTuple::fields(2); 623 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 624 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 625 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 626 627 // create result type (range) 628 fields = TypeTuple::fields(0); 629 630 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 631 632 return TypeFunc::make(domain,range); 633 } 634 635 const TypeFunc* OptoRuntime::flush_windows_Type() { 636 // create input type (domain) 637 const Type** fields = TypeTuple::fields(1); 638 fields[TypeFunc::Parms+0] = NULL; // void 639 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 640 641 // create result type 642 fields = TypeTuple::fields(1); 643 fields[TypeFunc::Parms+0] = NULL; // void 644 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 645 646 return TypeFunc::make(domain, range); 647 } 648 649 const TypeFunc* OptoRuntime::l2f_Type() { 650 // create input type (domain) 651 const Type **fields = TypeTuple::fields(2); 652 fields[TypeFunc::Parms+0] = TypeLong::LONG; 653 fields[TypeFunc::Parms+1] = Type::HALF; 654 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 655 656 // create result type (range) 657 fields = TypeTuple::fields(1); 658 fields[TypeFunc::Parms+0] = Type::FLOAT; 659 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 660 661 return TypeFunc::make(domain, range); 662 } 663 664 const TypeFunc* OptoRuntime::modf_Type() { 665 const Type **fields = TypeTuple::fields(2); 666 fields[TypeFunc::Parms+0] = Type::FLOAT; 667 fields[TypeFunc::Parms+1] = Type::FLOAT; 668 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 669 670 // create result type (range) 671 fields = TypeTuple::fields(1); 672 fields[TypeFunc::Parms+0] = Type::FLOAT; 673 674 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 675 676 return TypeFunc::make(domain, range); 677 } 678 679 const TypeFunc *OptoRuntime::Math_D_D_Type() { 680 // create input type (domain) 681 const Type **fields = TypeTuple::fields(2); 682 // Symbol* name of class to be loaded 683 fields[TypeFunc::Parms+0] = Type::DOUBLE; 684 fields[TypeFunc::Parms+1] = Type::HALF; 685 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 686 687 // create result type (range) 688 fields = TypeTuple::fields(2); 689 fields[TypeFunc::Parms+0] = Type::DOUBLE; 690 fields[TypeFunc::Parms+1] = Type::HALF; 691 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 692 693 return TypeFunc::make(domain, range); 694 } 695 696 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 697 const Type **fields = TypeTuple::fields(4); 698 fields[TypeFunc::Parms+0] = Type::DOUBLE; 699 fields[TypeFunc::Parms+1] = Type::HALF; 700 fields[TypeFunc::Parms+2] = Type::DOUBLE; 701 fields[TypeFunc::Parms+3] = Type::HALF; 702 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 703 704 // create result type (range) 705 fields = TypeTuple::fields(2); 706 fields[TypeFunc::Parms+0] = Type::DOUBLE; 707 fields[TypeFunc::Parms+1] = Type::HALF; 708 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 709 710 return TypeFunc::make(domain, range); 711 } 712 713 //-------------- currentTimeMillis, currentTimeNanos, etc 714 715 const TypeFunc* OptoRuntime::void_long_Type() { 716 // create input type (domain) 717 const Type **fields = TypeTuple::fields(0); 718 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 719 720 // create result type (range) 721 fields = TypeTuple::fields(2); 722 fields[TypeFunc::Parms+0] = TypeLong::LONG; 723 fields[TypeFunc::Parms+1] = Type::HALF; 724 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 725 726 return TypeFunc::make(domain, range); 727 } 728 729 // arraycopy stub variations: 730 enum ArrayCopyType { 731 ac_fast, // void(ptr, ptr, size_t) 732 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 733 ac_slow, // void(ptr, int, ptr, int, int) 734 ac_generic // int(ptr, int, ptr, int, int) 735 }; 736 737 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 738 // create input type (domain) 739 int num_args = (act == ac_fast ? 3 : 5); 740 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 741 int argcnt = num_args; 742 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 743 const Type** fields = TypeTuple::fields(argcnt); 744 int argp = TypeFunc::Parms; 745 fields[argp++] = TypePtr::NOTNULL; // src 746 if (num_size_args == 0) { 747 fields[argp++] = TypeInt::INT; // src_pos 748 } 749 fields[argp++] = TypePtr::NOTNULL; // dest 750 if (num_size_args == 0) { 751 fields[argp++] = TypeInt::INT; // dest_pos 752 fields[argp++] = TypeInt::INT; // length 753 } 754 while (num_size_args-- > 0) { 755 fields[argp++] = TypeX_X; // size in whatevers (size_t) 756 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 757 } 758 if (act == ac_checkcast) { 759 fields[argp++] = TypePtr::NOTNULL; // super_klass 760 } 761 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 762 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 763 764 // create result type if needed 765 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 766 fields = TypeTuple::fields(1); 767 if (retcnt == 0) 768 fields[TypeFunc::Parms+0] = NULL; // void 769 else 770 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 771 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 772 return TypeFunc::make(domain, range); 773 } 774 775 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 776 // This signature is simple: Two base pointers and a size_t. 777 return make_arraycopy_Type(ac_fast); 778 } 779 780 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 781 // An extension of fast_arraycopy_Type which adds type checking. 782 return make_arraycopy_Type(ac_checkcast); 783 } 784 785 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 786 // This signature is exactly the same as System.arraycopy. 787 // There are no intptr_t (int/long) arguments. 788 return make_arraycopy_Type(ac_slow); 789 } 790 791 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 792 // This signature is like System.arraycopy, except that it returns status. 793 return make_arraycopy_Type(ac_generic); 794 } 795 796 797 const TypeFunc* OptoRuntime::array_fill_Type() { 798 const Type** fields; 799 int argp = TypeFunc::Parms; 800 if (CCallingConventionRequiresIntsAsLongs) { 801 // create input type (domain): pointer, int, size_t 802 fields = TypeTuple::fields(3 LP64_ONLY( + 2)); 803 fields[argp++] = TypePtr::NOTNULL; 804 fields[argp++] = TypeLong::LONG; 805 fields[argp++] = Type::HALF; 806 } else { 807 // create input type (domain): pointer, int, size_t 808 fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 809 fields[argp++] = TypePtr::NOTNULL; 810 fields[argp++] = TypeInt::INT; 811 } 812 fields[argp++] = TypeX_X; // size in whatevers (size_t) 813 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 814 const TypeTuple *domain = TypeTuple::make(argp, fields); 815 816 // create result type 817 fields = TypeTuple::fields(1); 818 fields[TypeFunc::Parms+0] = NULL; // void 819 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 820 821 return TypeFunc::make(domain, range); 822 } 823 824 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant) 825 const TypeFunc* OptoRuntime::aescrypt_block_Type() { 826 // create input type (domain) 827 int num_args = 3; 828 if (Matcher::pass_original_key_for_aes()) { 829 num_args = 4; 830 } 831 int argcnt = num_args; 832 const Type** fields = TypeTuple::fields(argcnt); 833 int argp = TypeFunc::Parms; 834 fields[argp++] = TypePtr::NOTNULL; // src 835 fields[argp++] = TypePtr::NOTNULL; // dest 836 fields[argp++] = TypePtr::NOTNULL; // k array 837 if (Matcher::pass_original_key_for_aes()) { 838 fields[argp++] = TypePtr::NOTNULL; // original k array 839 } 840 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 841 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 842 843 // no result type needed 844 fields = TypeTuple::fields(1); 845 fields[TypeFunc::Parms+0] = NULL; // void 846 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 847 return TypeFunc::make(domain, range); 848 } 849 850 /** 851 * int updateBytesCRC32(int crc, byte* b, int len) 852 */ 853 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() { 854 // create input type (domain) 855 int num_args = 3; 856 int argcnt = num_args; 857 const Type** fields = TypeTuple::fields(argcnt); 858 int argp = TypeFunc::Parms; 859 fields[argp++] = TypeInt::INT; // crc 860 fields[argp++] = TypePtr::NOTNULL; // src 861 fields[argp++] = TypeInt::INT; // len 862 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 863 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 864 865 // result type needed 866 fields = TypeTuple::fields(1); 867 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 868 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 869 return TypeFunc::make(domain, range); 870 } 871 872 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void 873 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 874 // create input type (domain) 875 int num_args = 5; 876 if (Matcher::pass_original_key_for_aes()) { 877 num_args = 6; 878 } 879 int argcnt = num_args; 880 const Type** fields = TypeTuple::fields(argcnt); 881 int argp = TypeFunc::Parms; 882 fields[argp++] = TypePtr::NOTNULL; // src 883 fields[argp++] = TypePtr::NOTNULL; // dest 884 fields[argp++] = TypePtr::NOTNULL; // k array 885 fields[argp++] = TypePtr::NOTNULL; // r array 886 fields[argp++] = TypeInt::INT; // src len 887 if (Matcher::pass_original_key_for_aes()) { 888 fields[argp++] = TypePtr::NOTNULL; // original k array 889 } 890 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 891 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 892 893 // returning cipher len (int) 894 fields = TypeTuple::fields(1); 895 fields[TypeFunc::Parms+0] = TypeInt::INT; 896 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 897 return TypeFunc::make(domain, range); 898 } 899 900 //------------- Interpreter state access for on stack replacement 901 const TypeFunc* OptoRuntime::osr_end_Type() { 902 // create input type (domain) 903 const Type **fields = TypeTuple::fields(1); 904 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 905 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 906 907 // create result type 908 fields = TypeTuple::fields(1); 909 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 910 fields[TypeFunc::Parms+0] = NULL; // void 911 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 912 return TypeFunc::make(domain, range); 913 } 914 915 //-------------- methodData update helpers 916 917 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 918 // create input type (domain) 919 const Type **fields = TypeTuple::fields(2); 920 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 921 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 922 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 923 924 // create result type 925 fields = TypeTuple::fields(1); 926 fields[TypeFunc::Parms+0] = NULL; // void 927 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 928 return TypeFunc::make(domain,range); 929 } 930 931 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 932 if (receiver == NULL) return; 933 Klass* receiver_klass = receiver->klass(); 934 935 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 936 int empty_row = -1; // free row, if any is encountered 937 938 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 939 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 940 // if (vc->receiver(row) == receiver_klass) 941 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 942 intptr_t row_recv = *(mdp + receiver_off); 943 if (row_recv == (intptr_t) receiver_klass) { 944 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 945 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 946 *(mdp + count_off) += DataLayout::counter_increment; 947 return; 948 } else if (row_recv == 0) { 949 // else if (vc->receiver(row) == NULL) 950 empty_row = (int) row; 951 } 952 } 953 954 if (empty_row != -1) { 955 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 956 // vc->set_receiver(empty_row, receiver_klass); 957 *(mdp + receiver_off) = (intptr_t) receiver_klass; 958 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 959 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 960 *(mdp + count_off) = DataLayout::counter_increment; 961 } else { 962 // Receiver did not match any saved receiver and there is no empty row for it. 963 // Increment total counter to indicate polymorphic case. 964 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 965 *count_p += DataLayout::counter_increment; 966 } 967 JRT_END 968 969 //------------------------------------------------------------------------------------- 970 // register policy 971 972 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 973 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 974 switch (register_save_policy[reg]) { 975 case 'C': return false; //SOC 976 case 'E': return true ; //SOE 977 case 'N': return false; //NS 978 case 'A': return false; //AS 979 } 980 ShouldNotReachHere(); 981 return false; 982 } 983 984 //----------------------------------------------------------------------- 985 // Exceptions 986 // 987 988 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 989 990 // The method is an entry that is always called by a C++ method not 991 // directly from compiled code. Compiled code will call the C++ method following. 992 // We can't allow async exception to be installed during exception processing. 993 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 994 995 // Do not confuse exception_oop with pending_exception. The exception_oop 996 // is only used to pass arguments into the method. Not for general 997 // exception handling. DO NOT CHANGE IT to use pending_exception, since 998 // the runtime stubs checks this on exit. 999 assert(thread->exception_oop() != NULL, "exception oop is found"); 1000 address handler_address = NULL; 1001 1002 Handle exception(thread, thread->exception_oop()); 1003 address pc = thread->exception_pc(); 1004 1005 // Clear out the exception oop and pc since looking up an 1006 // exception handler can cause class loading, which might throw an 1007 // exception and those fields are expected to be clear during 1008 // normal bytecode execution. 1009 thread->clear_exception_oop_and_pc(); 1010 1011 if (TraceExceptions) { 1012 trace_exception(exception(), pc, ""); 1013 } 1014 1015 // for AbortVMOnException flag 1016 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 1017 1018 #ifdef ASSERT 1019 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1020 // should throw an exception here 1021 ShouldNotReachHere(); 1022 } 1023 #endif 1024 1025 // new exception handling: this method is entered only from adapters 1026 // exceptions from compiled java methods are handled in compiled code 1027 // using rethrow node 1028 1029 nm = CodeCache::find_nmethod(pc); 1030 assert(nm != NULL, "No NMethod found"); 1031 if (nm->is_native_method()) { 1032 fatal("Native method should not have path to exception handling"); 1033 } else { 1034 // we are switching to old paradigm: search for exception handler in caller_frame 1035 // instead in exception handler of caller_frame.sender() 1036 1037 if (JvmtiExport::can_post_on_exceptions()) { 1038 // "Full-speed catching" is not necessary here, 1039 // since we're notifying the VM on every catch. 1040 // Force deoptimization and the rest of the lookup 1041 // will be fine. 1042 deoptimize_caller_frame(thread); 1043 } 1044 1045 // Check the stack guard pages. If enabled, look for handler in this frame; 1046 // otherwise, forcibly unwind the frame. 1047 // 1048 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1049 bool force_unwind = !thread->reguard_stack(); 1050 bool deopting = false; 1051 if (nm->is_deopt_pc(pc)) { 1052 deopting = true; 1053 RegisterMap map(thread, false); 1054 frame deoptee = thread->last_frame().sender(&map); 1055 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1056 // Adjust the pc back to the original throwing pc 1057 pc = deoptee.pc(); 1058 } 1059 1060 // If we are forcing an unwind because of stack overflow then deopt is 1061 // irrelevant since we are throwing the frame away anyway. 1062 1063 if (deopting && !force_unwind) { 1064 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1065 } else { 1066 1067 handler_address = 1068 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1069 1070 if (handler_address == NULL) { 1071 Handle original_exception(thread, exception()); 1072 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1073 assert (handler_address != NULL, "must have compiled handler"); 1074 // Update the exception cache only when the unwind was not forced 1075 // and there didn't happen another exception during the computation of the 1076 // compiled exception handler. 1077 if (!force_unwind && original_exception() == exception()) { 1078 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1079 } 1080 } else { 1081 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1082 } 1083 } 1084 1085 thread->set_exception_pc(pc); 1086 thread->set_exception_handler_pc(handler_address); 1087 1088 // Check if the exception PC is a MethodHandle call site. 1089 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1090 } 1091 1092 // Restore correct return pc. Was saved above. 1093 thread->set_exception_oop(exception()); 1094 return handler_address; 1095 1096 JRT_END 1097 1098 // We are entering here from exception_blob 1099 // If there is a compiled exception handler in this method, we will continue there; 1100 // otherwise we will unwind the stack and continue at the caller of top frame method 1101 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1102 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1103 // we looked up the handler for has been deoptimized in the meantime. If it has been 1104 // we must not use the handler and instead return the deopt blob. 1105 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1106 // 1107 // We are in Java not VM and in debug mode we have a NoHandleMark 1108 // 1109 #ifndef PRODUCT 1110 SharedRuntime::_find_handler_ctr++; // find exception handler 1111 #endif 1112 debug_only(NoHandleMark __hm;) 1113 nmethod* nm = NULL; 1114 address handler_address = NULL; 1115 { 1116 // Enter the VM 1117 1118 ResetNoHandleMark rnhm; 1119 handler_address = handle_exception_C_helper(thread, nm); 1120 } 1121 1122 // Back in java: Use no oops, DON'T safepoint 1123 1124 // Now check to see if the handler we are returning is in a now 1125 // deoptimized frame 1126 1127 if (nm != NULL) { 1128 RegisterMap map(thread, false); 1129 frame caller = thread->last_frame().sender(&map); 1130 #ifdef ASSERT 1131 assert(caller.is_compiled_frame(), "must be"); 1132 #endif // ASSERT 1133 if (caller.is_deoptimized_frame()) { 1134 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1135 } 1136 } 1137 return handler_address; 1138 } 1139 1140 //------------------------------rethrow---------------------------------------- 1141 // We get here after compiled code has executed a 'RethrowNode'. The callee 1142 // is either throwing or rethrowing an exception. The callee-save registers 1143 // have been restored, synchronized objects have been unlocked and the callee 1144 // stack frame has been removed. The return address was passed in. 1145 // Exception oop is passed as the 1st argument. This routine is then called 1146 // from the stub. On exit, we know where to jump in the caller's code. 1147 // After this C code exits, the stub will pop his frame and end in a jump 1148 // (instead of a return). We enter the caller's default handler. 1149 // 1150 // This must be JRT_LEAF: 1151 // - caller will not change its state as we cannot block on exit, 1152 // therefore raw_exception_handler_for_return_address is all it takes 1153 // to handle deoptimized blobs 1154 // 1155 // However, there needs to be a safepoint check in the middle! So compiled 1156 // safepoints are completely watertight. 1157 // 1158 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1159 // 1160 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1161 // 1162 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1163 #ifndef PRODUCT 1164 SharedRuntime::_rethrow_ctr++; // count rethrows 1165 #endif 1166 assert (exception != NULL, "should have thrown a NULLPointerException"); 1167 #ifdef ASSERT 1168 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1169 // should throw an exception here 1170 ShouldNotReachHere(); 1171 } 1172 #endif 1173 1174 thread->set_vm_result(exception); 1175 // Frame not compiled (handles deoptimization blob) 1176 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1177 } 1178 1179 1180 const TypeFunc *OptoRuntime::rethrow_Type() { 1181 // create input type (domain) 1182 const Type **fields = TypeTuple::fields(1); 1183 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1184 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1185 1186 // create result type (range) 1187 fields = TypeTuple::fields(1); 1188 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1189 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1190 1191 return TypeFunc::make(domain, range); 1192 } 1193 1194 1195 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1196 // Deoptimize the caller before continuing, as the compiled 1197 // exception handler table may not be valid. 1198 if (!StressCompiledExceptionHandlers && doit) { 1199 deoptimize_caller_frame(thread); 1200 } 1201 } 1202 1203 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1204 // Called from within the owner thread, so no need for safepoint 1205 RegisterMap reg_map(thread); 1206 frame stub_frame = thread->last_frame(); 1207 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1208 frame caller_frame = stub_frame.sender(®_map); 1209 1210 // Deoptimize the caller frame. 1211 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1212 } 1213 1214 1215 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1216 // Called from within the owner thread, so no need for safepoint 1217 RegisterMap reg_map(thread); 1218 frame stub_frame = thread->last_frame(); 1219 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1220 frame caller_frame = stub_frame.sender(®_map); 1221 return caller_frame.is_deoptimized_frame(); 1222 } 1223 1224 1225 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1226 // create input type (domain) 1227 const Type **fields = TypeTuple::fields(1); 1228 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1229 // // The JavaThread* is passed to each routine as the last argument 1230 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1231 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1232 1233 // create result type (range) 1234 fields = TypeTuple::fields(0); 1235 1236 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1237 1238 return TypeFunc::make(domain,range); 1239 } 1240 1241 1242 //----------------------------------------------------------------------------- 1243 // Dtrace support. entry and exit probes have the same signature 1244 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1245 // create input type (domain) 1246 const Type **fields = TypeTuple::fields(2); 1247 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1248 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1249 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1250 1251 // create result type (range) 1252 fields = TypeTuple::fields(0); 1253 1254 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1255 1256 return TypeFunc::make(domain,range); 1257 } 1258 1259 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1260 // create input type (domain) 1261 const Type **fields = TypeTuple::fields(2); 1262 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1263 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1264 1265 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1266 1267 // create result type (range) 1268 fields = TypeTuple::fields(0); 1269 1270 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1271 1272 return TypeFunc::make(domain,range); 1273 } 1274 1275 1276 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1277 assert(obj->is_oop(), "must be a valid oop"); 1278 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1279 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1280 JRT_END 1281 1282 //----------------------------------------------------------------------------- 1283 1284 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1285 1286 // 1287 // dump the collected NamedCounters. 1288 // 1289 void OptoRuntime::print_named_counters() { 1290 int total_lock_count = 0; 1291 int eliminated_lock_count = 0; 1292 1293 NamedCounter* c = _named_counters; 1294 while (c) { 1295 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1296 int count = c->count(); 1297 if (count > 0) { 1298 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1299 if (Verbose) { 1300 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1301 } 1302 total_lock_count += count; 1303 if (eliminated) { 1304 eliminated_lock_count += count; 1305 } 1306 } 1307 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1308 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1309 if (blc->nonzero()) { 1310 tty->print_cr("%s", c->name()); 1311 blc->print_on(tty); 1312 } 1313 } 1314 c = c->next(); 1315 } 1316 if (total_lock_count > 0) { 1317 tty->print_cr("dynamic locks: %d", total_lock_count); 1318 if (eliminated_lock_count) { 1319 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1320 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1321 } 1322 } 1323 } 1324 1325 // 1326 // Allocate a new NamedCounter. The JVMState is used to generate the 1327 // name which consists of method@line for the inlining tree. 1328 // 1329 1330 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1331 int max_depth = youngest_jvms->depth(); 1332 1333 // Visit scopes from youngest to oldest. 1334 bool first = true; 1335 stringStream st; 1336 for (int depth = max_depth; depth >= 1; depth--) { 1337 JVMState* jvms = youngest_jvms->of_depth(depth); 1338 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1339 if (!first) { 1340 st.print(" "); 1341 } else { 1342 first = false; 1343 } 1344 int bci = jvms->bci(); 1345 if (bci < 0) bci = 0; 1346 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1347 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1348 } 1349 NamedCounter* c; 1350 if (tag == NamedCounter::BiasedLockingCounter) { 1351 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1352 } else { 1353 c = new NamedCounter(strdup(st.as_string()), tag); 1354 } 1355 1356 // atomically add the new counter to the head of the list. We only 1357 // add counters so this is safe. 1358 NamedCounter* head; 1359 do { 1360 head = _named_counters; 1361 c->set_next(head); 1362 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1363 return c; 1364 } 1365 1366 //----------------------------------------------------------------------------- 1367 // Non-product code 1368 #ifndef PRODUCT 1369 1370 int trace_exception_counter = 0; 1371 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1372 ttyLocker ttyl; 1373 trace_exception_counter++; 1374 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1375 exception_oop->print_value(); 1376 tty->print(" in "); 1377 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1378 if (blob->is_nmethod()) { 1379 nmethod* nm = blob->as_nmethod_or_null(); 1380 nm->method()->print_value(); 1381 } else if (blob->is_runtime_stub()) { 1382 tty->print("<runtime-stub>"); 1383 } else { 1384 tty->print("<unknown>"); 1385 } 1386 tty->print(" at " INTPTR_FORMAT, exception_pc); 1387 tty->print_cr("]"); 1388 } 1389 1390 #endif // PRODUCT 1391 1392 1393 # ifdef ENABLE_ZAP_DEAD_LOCALS 1394 // Called from call sites in compiled code with oop maps (actually safepoints) 1395 // Zaps dead locals in first java frame. 1396 // Is entry because may need to lock to generate oop maps 1397 // Currently, only used for compiler frames, but someday may be used 1398 // for interpreter frames, too. 1399 1400 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1401 1402 // avoid pointers to member funcs with these helpers 1403 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1404 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1405 1406 1407 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1408 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1409 assert(JavaThread::current() == thread, "is this needed?"); 1410 1411 if ( !ZapDeadCompiledLocals ) return; 1412 1413 bool skip = false; 1414 1415 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1416 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1417 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1418 warning("starting zapping after skipping"); 1419 1420 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1421 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1422 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1423 warning("about to zap last zap"); 1424 1425 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1426 1427 if ( skip ) return; 1428 1429 // find java frame and zap it 1430 1431 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1432 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1433 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1434 return; 1435 } 1436 } 1437 warning("no frame found to zap in zap_dead_Java_locals_C"); 1438 } 1439 1440 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1441 zap_dead_java_or_native_locals(thread, is_java_frame); 1442 JRT_END 1443 1444 // The following does not work because for one thing, the 1445 // thread state is wrong; it expects java, but it is native. 1446 // Also, the invariants in a native stub are different and 1447 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1448 // in there. 1449 // So for now, we do not zap in native stubs. 1450 1451 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1452 zap_dead_java_or_native_locals(thread, is_native_frame); 1453 JRT_END 1454 1455 # endif