1 /* 2 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/systemDictionary.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "code/compiledIC.hpp" 29 #include "code/icBuffer.hpp" 30 #include "code/nmethod.hpp" 31 #include "code/pcDesc.hpp" 32 #include "code/scopeDesc.hpp" 33 #include "code/vtableStubs.hpp" 34 #include "compiler/compileBroker.hpp" 35 #include "compiler/compilerOracle.hpp" 36 #include "compiler/oopMap.hpp" 37 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" 38 #include "gc_implementation/g1/heapRegion.hpp" 39 #include "gc_interface/collectedHeap.hpp" 40 #include "interpreter/bytecode.hpp" 41 #include "interpreter/interpreter.hpp" 42 #include "interpreter/linkResolver.hpp" 43 #include "memory/barrierSet.hpp" 44 #include "memory/gcLocker.inline.hpp" 45 #include "memory/oopFactory.hpp" 46 #include "oops/objArrayKlass.hpp" 47 #include "oops/oop.inline.hpp" 48 #include "opto/addnode.hpp" 49 #include "opto/callnode.hpp" 50 #include "opto/cfgnode.hpp" 51 #include "opto/connode.hpp" 52 #include "opto/graphKit.hpp" 53 #include "opto/machnode.hpp" 54 #include "opto/matcher.hpp" 55 #include "opto/memnode.hpp" 56 #include "opto/mulnode.hpp" 57 #include "opto/runtime.hpp" 58 #include "opto/subnode.hpp" 59 #include "runtime/fprofiler.hpp" 60 #include "runtime/handles.inline.hpp" 61 #include "runtime/interfaceSupport.hpp" 62 #include "runtime/javaCalls.hpp" 63 #include "runtime/sharedRuntime.hpp" 64 #include "runtime/signature.hpp" 65 #include "runtime/threadCritical.hpp" 66 #include "runtime/vframe.hpp" 67 #include "runtime/vframeArray.hpp" 68 #include "runtime/vframe_hp.hpp" 69 #include "utilities/copy.hpp" 70 #include "utilities/preserveException.hpp" 71 #ifdef TARGET_ARCH_MODEL_x86_32 72 # include "adfiles/ad_x86_32.hpp" 73 #endif 74 #ifdef TARGET_ARCH_MODEL_x86_64 75 # include "adfiles/ad_x86_64.hpp" 76 #endif 77 #ifdef TARGET_ARCH_MODEL_sparc 78 # include "adfiles/ad_sparc.hpp" 79 #endif 80 #ifdef TARGET_ARCH_MODEL_zero 81 # include "adfiles/ad_zero.hpp" 82 #endif 83 #ifdef TARGET_ARCH_MODEL_arm 84 # include "adfiles/ad_arm.hpp" 85 #endif 86 #ifdef TARGET_ARCH_MODEL_ppc 87 # include "adfiles/ad_ppc.hpp" 88 #endif 89 90 91 // For debugging purposes: 92 // To force FullGCALot inside a runtime function, add the following two lines 93 // 94 // Universe::release_fullgc_alot_dummy(); 95 // MarkSweep::invoke(0, "Debugging"); 96 // 97 // At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 98 99 100 101 102 // Compiled code entry points 103 address OptoRuntime::_new_instance_Java = NULL; 104 address OptoRuntime::_new_array_Java = NULL; 105 address OptoRuntime::_new_array_nozero_Java = NULL; 106 address OptoRuntime::_multianewarray2_Java = NULL; 107 address OptoRuntime::_multianewarray3_Java = NULL; 108 address OptoRuntime::_multianewarray4_Java = NULL; 109 address OptoRuntime::_multianewarray5_Java = NULL; 110 address OptoRuntime::_multianewarrayN_Java = NULL; 111 address OptoRuntime::_g1_wb_pre_Java = NULL; 112 address OptoRuntime::_g1_wb_post_Java = NULL; 113 address OptoRuntime::_vtable_must_compile_Java = NULL; 114 address OptoRuntime::_complete_monitor_locking_Java = NULL; 115 address OptoRuntime::_rethrow_Java = NULL; 116 117 address OptoRuntime::_slow_arraycopy_Java = NULL; 118 address OptoRuntime::_register_finalizer_Java = NULL; 119 120 # ifdef ENABLE_ZAP_DEAD_LOCALS 121 address OptoRuntime::_zap_dead_Java_locals_Java = NULL; 122 address OptoRuntime::_zap_dead_native_locals_Java = NULL; 123 # endif 124 125 ExceptionBlob* OptoRuntime::_exception_blob; 126 127 // This should be called in an assertion at the start of OptoRuntime routines 128 // which are entered from compiled code (all of them) 129 #ifdef ASSERT 130 static bool check_compiled_frame(JavaThread* thread) { 131 assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); 132 RegisterMap map(thread, false); 133 frame caller = thread->last_frame().sender(&map); 134 assert(caller.is_compiled_frame(), "not being called from compiled like code"); 135 return true; 136 } 137 #endif // ASSERT 138 139 140 #define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ 141 var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc) 142 143 void OptoRuntime::generate(ciEnv* env) { 144 145 generate_exception_blob(); 146 147 // Note: tls: Means fetching the return oop out of the thread-local storage 148 // 149 // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc 150 // ------------------------------------------------------------------------------------------------------------------------------- 151 gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); 152 gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); 153 gen(env, _new_array_nozero_Java , new_array_Type , new_array_nozero_C , 0 , true , false, false); 154 gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); 155 gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); 156 gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); 157 gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); 158 gen(env, _multianewarrayN_Java , multianewarrayN_Type , multianewarrayN_C , 0 , true , false, false); 159 gen(env, _g1_wb_pre_Java , g1_wb_pre_Type , SharedRuntime::g1_wb_pre , 0 , false, false, false); 160 gen(env, _g1_wb_post_Java , g1_wb_post_Type , SharedRuntime::g1_wb_post , 0 , false, false, false); 161 gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false); 162 gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); 163 164 gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); 165 gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); 166 167 # ifdef ENABLE_ZAP_DEAD_LOCALS 168 gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); 169 gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); 170 # endif 171 172 } 173 174 #undef gen 175 176 177 // Helper method to do generation of RunTimeStub's 178 address OptoRuntime::generate_stub( ciEnv* env, 179 TypeFunc_generator gen, address C_function, 180 const char *name, int is_fancy_jump, 181 bool pass_tls, 182 bool save_argument_registers, 183 bool return_pc ) { 184 ResourceMark rm; 185 Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); 186 return C.stub_entry_point(); 187 } 188 189 const char* OptoRuntime::stub_name(address entry) { 190 #ifndef PRODUCT 191 CodeBlob* cb = CodeCache::find_blob(entry); 192 RuntimeStub* rs =(RuntimeStub *)cb; 193 assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); 194 return rs->name(); 195 #else 196 // Fast implementation for product mode (maybe it should be inlined too) 197 return "runtime stub"; 198 #endif 199 } 200 201 202 //============================================================================= 203 // Opto compiler runtime routines 204 //============================================================================= 205 206 207 //=============================allocation====================================== 208 // We failed the fast-path allocation. Now we need to do a scavenge or GC 209 // and try allocation again. 210 211 void OptoRuntime::new_store_pre_barrier(JavaThread* thread) { 212 // After any safepoint, just before going back to compiled code, 213 // we inform the GC that we will be doing initializing writes to 214 // this object in the future without emitting card-marks, so 215 // GC may take any compensating steps. 216 // NOTE: Keep this code consistent with GraphKit::store_barrier. 217 218 oop new_obj = thread->vm_result(); 219 if (new_obj == NULL) return; 220 221 assert(Universe::heap()->can_elide_tlab_store_barriers(), 222 "compiler must check this first"); 223 // GC may decide to give back a safer copy of new_obj. 224 new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); 225 thread->set_vm_result(new_obj); 226 } 227 228 // object allocation 229 JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(Klass* klass, JavaThread* thread)) 230 JRT_BLOCK; 231 #ifndef PRODUCT 232 SharedRuntime::_new_instance_ctr++; // new instance requires GC 233 #endif 234 assert(check_compiled_frame(thread), "incorrect caller"); 235 236 // These checks are cheap to make and support reflective allocation. 237 int lh = klass->layout_helper(); 238 if (Klass::layout_helper_needs_slow_path(lh) 239 || !InstanceKlass::cast(klass)->is_initialized()) { 240 KlassHandle kh(THREAD, klass); 241 kh->check_valid_for_instantiation(false, THREAD); 242 if (!HAS_PENDING_EXCEPTION) { 243 InstanceKlass::cast(kh())->initialize(THREAD); 244 } 245 if (!HAS_PENDING_EXCEPTION) { 246 klass = kh(); 247 } else { 248 klass = NULL; 249 } 250 } 251 252 if (klass != NULL) { 253 // Scavenge and allocate an instance. 254 oop result = InstanceKlass::cast(klass)->allocate_instance(THREAD); 255 thread->set_vm_result(result); 256 257 // Pass oops back through thread local storage. Our apparent type to Java 258 // is that we return an oop, but we can block on exit from this routine and 259 // a GC can trash the oop in C's return register. The generated stub will 260 // fetch the oop from TLS after any possible GC. 261 } 262 263 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 264 JRT_BLOCK_END; 265 266 if (GraphKit::use_ReduceInitialCardMarks()) { 267 // inform GC that we won't do card marks for initializing writes. 268 new_store_pre_barrier(thread); 269 } 270 JRT_END 271 272 273 // array allocation 274 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(Klass* array_type, int len, JavaThread *thread)) 275 JRT_BLOCK; 276 #ifndef PRODUCT 277 SharedRuntime::_new_array_ctr++; // new array requires GC 278 #endif 279 assert(check_compiled_frame(thread), "incorrect caller"); 280 281 // Scavenge and allocate an instance. 282 oop result; 283 284 if (array_type->oop_is_typeArray()) { 285 // The oopFactory likes to work with the element type. 286 // (We could bypass the oopFactory, since it doesn't add much value.) 287 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 288 result = oopFactory::new_typeArray(elem_type, len, THREAD); 289 } else { 290 // Although the oopFactory likes to work with the elem_type, 291 // the compiler prefers the array_type, since it must already have 292 // that latter value in hand for the fast path. 293 Klass* elem_type = ObjArrayKlass::cast(array_type)->element_klass(); 294 result = oopFactory::new_objArray(elem_type, len, THREAD); 295 } 296 297 // Pass oops back through thread local storage. Our apparent type to Java 298 // is that we return an oop, but we can block on exit from this routine and 299 // a GC can trash the oop in C's return register. The generated stub will 300 // fetch the oop from TLS after any possible GC. 301 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 302 thread->set_vm_result(result); 303 JRT_BLOCK_END; 304 305 if (GraphKit::use_ReduceInitialCardMarks()) { 306 // inform GC that we won't do card marks for initializing writes. 307 new_store_pre_barrier(thread); 308 } 309 JRT_END 310 311 // array allocation without zeroing 312 JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(Klass* array_type, int len, JavaThread *thread)) 313 JRT_BLOCK; 314 #ifndef PRODUCT 315 SharedRuntime::_new_array_ctr++; // new array requires GC 316 #endif 317 assert(check_compiled_frame(thread), "incorrect caller"); 318 319 // Scavenge and allocate an instance. 320 oop result; 321 322 assert(array_type->oop_is_typeArray(), "should be called only for type array"); 323 // The oopFactory likes to work with the element type. 324 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 325 result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD); 326 327 // Pass oops back through thread local storage. Our apparent type to Java 328 // is that we return an oop, but we can block on exit from this routine and 329 // a GC can trash the oop in C's return register. The generated stub will 330 // fetch the oop from TLS after any possible GC. 331 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 332 thread->set_vm_result(result); 333 JRT_BLOCK_END; 334 335 if (GraphKit::use_ReduceInitialCardMarks()) { 336 // inform GC that we won't do card marks for initializing writes. 337 new_store_pre_barrier(thread); 338 } 339 340 oop result = thread->vm_result(); 341 if ((len > 0) && (result != NULL) && 342 is_deoptimized_caller_frame(thread)) { 343 // Zero array here if the caller is deoptimized. 344 int size = ((typeArrayOop)result)->object_size(); 345 BasicType elem_type = TypeArrayKlass::cast(array_type)->element_type(); 346 const size_t hs = arrayOopDesc::header_size(elem_type); 347 // Align to next 8 bytes to avoid trashing arrays's length. 348 const size_t aligned_hs = align_object_offset(hs); 349 HeapWord* obj = (HeapWord*)result; 350 if (aligned_hs > hs) { 351 Copy::zero_to_words(obj+hs, aligned_hs-hs); 352 } 353 // Optimized zeroing. 354 Copy::fill_to_aligned_words(obj+aligned_hs, size-aligned_hs); 355 } 356 357 JRT_END 358 359 // Note: multianewarray for one dimension is handled inline by GraphKit::new_array. 360 361 // multianewarray for 2 dimensions 362 JRT_ENTRY(void, OptoRuntime::multianewarray2_C(Klass* elem_type, int len1, int len2, JavaThread *thread)) 363 #ifndef PRODUCT 364 SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension 365 #endif 366 assert(check_compiled_frame(thread), "incorrect caller"); 367 assert(elem_type->is_klass(), "not a class"); 368 jint dims[2]; 369 dims[0] = len1; 370 dims[1] = len2; 371 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); 372 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 373 thread->set_vm_result(obj); 374 JRT_END 375 376 // multianewarray for 3 dimensions 377 JRT_ENTRY(void, OptoRuntime::multianewarray3_C(Klass* elem_type, int len1, int len2, int len3, JavaThread *thread)) 378 #ifndef PRODUCT 379 SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension 380 #endif 381 assert(check_compiled_frame(thread), "incorrect caller"); 382 assert(elem_type->is_klass(), "not a class"); 383 jint dims[3]; 384 dims[0] = len1; 385 dims[1] = len2; 386 dims[2] = len3; 387 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); 388 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 389 thread->set_vm_result(obj); 390 JRT_END 391 392 // multianewarray for 4 dimensions 393 JRT_ENTRY(void, OptoRuntime::multianewarray4_C(Klass* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) 394 #ifndef PRODUCT 395 SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension 396 #endif 397 assert(check_compiled_frame(thread), "incorrect caller"); 398 assert(elem_type->is_klass(), "not a class"); 399 jint dims[4]; 400 dims[0] = len1; 401 dims[1] = len2; 402 dims[2] = len3; 403 dims[3] = len4; 404 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); 405 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 406 thread->set_vm_result(obj); 407 JRT_END 408 409 // multianewarray for 5 dimensions 410 JRT_ENTRY(void, OptoRuntime::multianewarray5_C(Klass* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) 411 #ifndef PRODUCT 412 SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension 413 #endif 414 assert(check_compiled_frame(thread), "incorrect caller"); 415 assert(elem_type->is_klass(), "not a class"); 416 jint dims[5]; 417 dims[0] = len1; 418 dims[1] = len2; 419 dims[2] = len3; 420 dims[3] = len4; 421 dims[4] = len5; 422 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); 423 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 424 thread->set_vm_result(obj); 425 JRT_END 426 427 JRT_ENTRY(void, OptoRuntime::multianewarrayN_C(Klass* elem_type, arrayOopDesc* dims, JavaThread *thread)) 428 assert(check_compiled_frame(thread), "incorrect caller"); 429 assert(elem_type->is_klass(), "not a class"); 430 assert(oop(dims)->is_typeArray(), "not an array"); 431 432 ResourceMark rm; 433 jint len = dims->length(); 434 assert(len > 0, "Dimensions array should contain data"); 435 jint *j_dims = typeArrayOop(dims)->int_at_addr(0); 436 jint *c_dims = NEW_RESOURCE_ARRAY(jint, len); 437 Copy::conjoint_jints_atomic(j_dims, c_dims, len); 438 439 oop obj = ArrayKlass::cast(elem_type)->multi_allocate(len, c_dims, THREAD); 440 deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); 441 thread->set_vm_result(obj); 442 JRT_END 443 444 445 const TypeFunc *OptoRuntime::new_instance_Type() { 446 // create input type (domain) 447 const Type **fields = TypeTuple::fields(1); 448 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 449 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 450 451 // create result type (range) 452 fields = TypeTuple::fields(1); 453 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 454 455 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 456 457 return TypeFunc::make(domain, range); 458 } 459 460 461 const TypeFunc *OptoRuntime::athrow_Type() { 462 // create input type (domain) 463 const Type **fields = TypeTuple::fields(1); 464 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated 465 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 466 467 // create result type (range) 468 fields = TypeTuple::fields(0); 469 470 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 471 472 return TypeFunc::make(domain, range); 473 } 474 475 476 const TypeFunc *OptoRuntime::new_array_Type() { 477 // create input type (domain) 478 const Type **fields = TypeTuple::fields(2); 479 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 480 fields[TypeFunc::Parms+1] = TypeInt::INT; // array size 481 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 482 483 // create result type (range) 484 fields = TypeTuple::fields(1); 485 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 486 487 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 488 489 return TypeFunc::make(domain, range); 490 } 491 492 const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { 493 // create input type (domain) 494 const int nargs = ndim + 1; 495 const Type **fields = TypeTuple::fields(nargs); 496 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 497 for( int i = 1; i < nargs; i++ ) 498 fields[TypeFunc::Parms + i] = TypeInt::INT; // array size 499 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); 500 501 // create result type (range) 502 fields = TypeTuple::fields(1); 503 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 504 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 505 506 return TypeFunc::make(domain, range); 507 } 508 509 const TypeFunc *OptoRuntime::multianewarray2_Type() { 510 return multianewarray_Type(2); 511 } 512 513 const TypeFunc *OptoRuntime::multianewarray3_Type() { 514 return multianewarray_Type(3); 515 } 516 517 const TypeFunc *OptoRuntime::multianewarray4_Type() { 518 return multianewarray_Type(4); 519 } 520 521 const TypeFunc *OptoRuntime::multianewarray5_Type() { 522 return multianewarray_Type(5); 523 } 524 525 const TypeFunc *OptoRuntime::multianewarrayN_Type() { 526 // create input type (domain) 527 const Type **fields = TypeTuple::fields(2); 528 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass 529 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // array of dim sizes 530 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 531 532 // create result type (range) 533 fields = TypeTuple::fields(1); 534 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop 535 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 536 537 return TypeFunc::make(domain, range); 538 } 539 540 const TypeFunc *OptoRuntime::g1_wb_pre_Type() { 541 const Type **fields = TypeTuple::fields(2); 542 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // original field value 543 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 544 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 545 546 // create result type (range) 547 fields = TypeTuple::fields(0); 548 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 549 550 return TypeFunc::make(domain, range); 551 } 552 553 const TypeFunc *OptoRuntime::g1_wb_post_Type() { 554 555 const Type **fields = TypeTuple::fields(2); 556 fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Card addr 557 fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // thread 558 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 559 560 // create result type (range) 561 fields = TypeTuple::fields(0); 562 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 563 564 return TypeFunc::make(domain, range); 565 } 566 567 const TypeFunc *OptoRuntime::uncommon_trap_Type() { 568 // create input type (domain) 569 const Type **fields = TypeTuple::fields(1); 570 // Symbol* name of class to be loaded 571 fields[TypeFunc::Parms+0] = TypeInt::INT; 572 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 573 574 // create result type (range) 575 fields = TypeTuple::fields(0); 576 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); 577 578 return TypeFunc::make(domain, range); 579 } 580 581 # ifdef ENABLE_ZAP_DEAD_LOCALS 582 // Type used for stub generation for zap_dead_locals. 583 // No inputs or outputs 584 const TypeFunc *OptoRuntime::zap_dead_locals_Type() { 585 // create input type (domain) 586 const Type **fields = TypeTuple::fields(0); 587 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); 588 589 // create result type (range) 590 fields = TypeTuple::fields(0); 591 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); 592 593 return TypeFunc::make(domain,range); 594 } 595 # endif 596 597 598 //----------------------------------------------------------------------------- 599 // Monitor Handling 600 const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { 601 // create input type (domain) 602 const Type **fields = TypeTuple::fields(2); 603 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 604 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 605 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 606 607 // create result type (range) 608 fields = TypeTuple::fields(0); 609 610 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 611 612 return TypeFunc::make(domain,range); 613 } 614 615 616 //----------------------------------------------------------------------------- 617 const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { 618 // create input type (domain) 619 const Type **fields = TypeTuple::fields(2); 620 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked 621 fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock 622 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 623 624 // create result type (range) 625 fields = TypeTuple::fields(0); 626 627 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 628 629 return TypeFunc::make(domain,range); 630 } 631 632 const TypeFunc* OptoRuntime::flush_windows_Type() { 633 // create input type (domain) 634 const Type** fields = TypeTuple::fields(1); 635 fields[TypeFunc::Parms+0] = NULL; // void 636 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); 637 638 // create result type 639 fields = TypeTuple::fields(1); 640 fields[TypeFunc::Parms+0] = NULL; // void 641 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 642 643 return TypeFunc::make(domain, range); 644 } 645 646 const TypeFunc* OptoRuntime::l2f_Type() { 647 // create input type (domain) 648 const Type **fields = TypeTuple::fields(2); 649 fields[TypeFunc::Parms+0] = TypeLong::LONG; 650 fields[TypeFunc::Parms+1] = Type::HALF; 651 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 652 653 // create result type (range) 654 fields = TypeTuple::fields(1); 655 fields[TypeFunc::Parms+0] = Type::FLOAT; 656 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 657 658 return TypeFunc::make(domain, range); 659 } 660 661 const TypeFunc* OptoRuntime::modf_Type() { 662 const Type **fields = TypeTuple::fields(2); 663 fields[TypeFunc::Parms+0] = Type::FLOAT; 664 fields[TypeFunc::Parms+1] = Type::FLOAT; 665 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 666 667 // create result type (range) 668 fields = TypeTuple::fields(1); 669 fields[TypeFunc::Parms+0] = Type::FLOAT; 670 671 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 672 673 return TypeFunc::make(domain, range); 674 } 675 676 const TypeFunc *OptoRuntime::Math_D_D_Type() { 677 // create input type (domain) 678 const Type **fields = TypeTuple::fields(2); 679 // Symbol* name of class to be loaded 680 fields[TypeFunc::Parms+0] = Type::DOUBLE; 681 fields[TypeFunc::Parms+1] = Type::HALF; 682 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 683 684 // create result type (range) 685 fields = TypeTuple::fields(2); 686 fields[TypeFunc::Parms+0] = Type::DOUBLE; 687 fields[TypeFunc::Parms+1] = Type::HALF; 688 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 689 690 return TypeFunc::make(domain, range); 691 } 692 693 const TypeFunc* OptoRuntime::Math_DD_D_Type() { 694 const Type **fields = TypeTuple::fields(4); 695 fields[TypeFunc::Parms+0] = Type::DOUBLE; 696 fields[TypeFunc::Parms+1] = Type::HALF; 697 fields[TypeFunc::Parms+2] = Type::DOUBLE; 698 fields[TypeFunc::Parms+3] = Type::HALF; 699 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); 700 701 // create result type (range) 702 fields = TypeTuple::fields(2); 703 fields[TypeFunc::Parms+0] = Type::DOUBLE; 704 fields[TypeFunc::Parms+1] = Type::HALF; 705 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 706 707 return TypeFunc::make(domain, range); 708 } 709 710 //-------------- currentTimeMillis, currentTimeNanos, etc 711 712 const TypeFunc* OptoRuntime::void_long_Type() { 713 // create input type (domain) 714 const Type **fields = TypeTuple::fields(0); 715 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); 716 717 // create result type (range) 718 fields = TypeTuple::fields(2); 719 fields[TypeFunc::Parms+0] = TypeLong::LONG; 720 fields[TypeFunc::Parms+1] = Type::HALF; 721 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); 722 723 return TypeFunc::make(domain, range); 724 } 725 726 // arraycopy stub variations: 727 enum ArrayCopyType { 728 ac_fast, // void(ptr, ptr, size_t) 729 ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) 730 ac_slow, // void(ptr, int, ptr, int, int) 731 ac_generic // int(ptr, int, ptr, int, int) 732 }; 733 734 static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { 735 // create input type (domain) 736 int num_args = (act == ac_fast ? 3 : 5); 737 int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); 738 int argcnt = num_args; 739 LP64_ONLY(argcnt += num_size_args); // halfwords for lengths 740 const Type** fields = TypeTuple::fields(argcnt); 741 int argp = TypeFunc::Parms; 742 fields[argp++] = TypePtr::NOTNULL; // src 743 if (num_size_args == 0) { 744 fields[argp++] = TypeInt::INT; // src_pos 745 } 746 fields[argp++] = TypePtr::NOTNULL; // dest 747 if (num_size_args == 0) { 748 fields[argp++] = TypeInt::INT; // dest_pos 749 fields[argp++] = TypeInt::INT; // length 750 } 751 while (num_size_args-- > 0) { 752 fields[argp++] = TypeX_X; // size in whatevers (size_t) 753 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 754 } 755 if (act == ac_checkcast) { 756 fields[argp++] = TypePtr::NOTNULL; // super_klass 757 } 758 assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); 759 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 760 761 // create result type if needed 762 int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); 763 fields = TypeTuple::fields(1); 764 if (retcnt == 0) 765 fields[TypeFunc::Parms+0] = NULL; // void 766 else 767 fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed 768 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); 769 return TypeFunc::make(domain, range); 770 } 771 772 const TypeFunc* OptoRuntime::fast_arraycopy_Type() { 773 // This signature is simple: Two base pointers and a size_t. 774 return make_arraycopy_Type(ac_fast); 775 } 776 777 const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { 778 // An extension of fast_arraycopy_Type which adds type checking. 779 return make_arraycopy_Type(ac_checkcast); 780 } 781 782 const TypeFunc* OptoRuntime::slow_arraycopy_Type() { 783 // This signature is exactly the same as System.arraycopy. 784 // There are no intptr_t (int/long) arguments. 785 return make_arraycopy_Type(ac_slow); 786 } 787 788 const TypeFunc* OptoRuntime::generic_arraycopy_Type() { 789 // This signature is like System.arraycopy, except that it returns status. 790 return make_arraycopy_Type(ac_generic); 791 } 792 793 794 const TypeFunc* OptoRuntime::array_fill_Type() { 795 // create input type (domain): pointer, int, size_t 796 const Type** fields = TypeTuple::fields(3 LP64_ONLY( + 1)); 797 int argp = TypeFunc::Parms; 798 fields[argp++] = TypePtr::NOTNULL; 799 fields[argp++] = TypeInt::INT; 800 fields[argp++] = TypeX_X; // size in whatevers (size_t) 801 LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length 802 const TypeTuple *domain = TypeTuple::make(argp, fields); 803 804 // create result type 805 fields = TypeTuple::fields(1); 806 fields[TypeFunc::Parms+0] = NULL; // void 807 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 808 809 return TypeFunc::make(domain, range); 810 } 811 812 // for aescrypt encrypt/decrypt operations, just three pointers returning void (length is constant) 813 const TypeFunc* OptoRuntime::aescrypt_block_Type() { 814 // create input type (domain) 815 int num_args = 3; 816 int argcnt = num_args; 817 const Type** fields = TypeTuple::fields(argcnt); 818 int argp = TypeFunc::Parms; 819 fields[argp++] = TypePtr::NOTNULL; // src 820 fields[argp++] = TypePtr::NOTNULL; // dest 821 fields[argp++] = TypePtr::NOTNULL; // k array 822 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 823 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 824 825 // no result type needed 826 fields = TypeTuple::fields(1); 827 fields[TypeFunc::Parms+0] = NULL; // void 828 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 829 return TypeFunc::make(domain, range); 830 } 831 832 /** 833 * int updateBytesCRC32(int crc, byte* b, int len) 834 */ 835 const TypeFunc* OptoRuntime::updateBytesCRC32_Type() { 836 // create input type (domain) 837 int num_args = 3; 838 int argcnt = num_args; 839 const Type** fields = TypeTuple::fields(argcnt); 840 int argp = TypeFunc::Parms; 841 fields[argp++] = TypeInt::INT; // crc 842 fields[argp++] = TypePtr::NOTNULL; // src 843 fields[argp++] = TypeInt::INT; // len 844 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 845 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 846 847 // result type needed 848 fields = TypeTuple::fields(1); 849 fields[TypeFunc::Parms+0] = TypeInt::INT; // crc result 850 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+1, fields); 851 return TypeFunc::make(domain, range); 852 } 853 854 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void 855 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 856 // create input type (domain) 857 int num_args = 5; 858 int argcnt = num_args; 859 const Type** fields = TypeTuple::fields(argcnt); 860 int argp = TypeFunc::Parms; 861 fields[argp++] = TypePtr::NOTNULL; // src 862 fields[argp++] = TypePtr::NOTNULL; // dest 863 fields[argp++] = TypePtr::NOTNULL; // k array 864 fields[argp++] = TypePtr::NOTNULL; // r array 865 fields[argp++] = TypeInt::INT; // src len 866 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 867 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 868 869 // no result type needed 870 fields = TypeTuple::fields(1); 871 fields[TypeFunc::Parms+0] = NULL; // void 872 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 873 return TypeFunc::make(domain, range); 874 } 875 876 //------------- Interpreter state access for on stack replacement 877 const TypeFunc* OptoRuntime::osr_end_Type() { 878 // create input type (domain) 879 const Type **fields = TypeTuple::fields(1); 880 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 881 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 882 883 // create result type 884 fields = TypeTuple::fields(1); 885 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 886 fields[TypeFunc::Parms+0] = NULL; // void 887 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 888 return TypeFunc::make(domain, range); 889 } 890 891 //-------------- methodData update helpers 892 893 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 894 // create input type (domain) 895 const Type **fields = TypeTuple::fields(2); 896 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 897 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 898 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 899 900 // create result type 901 fields = TypeTuple::fields(1); 902 fields[TypeFunc::Parms+0] = NULL; // void 903 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 904 return TypeFunc::make(domain,range); 905 } 906 907 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 908 if (receiver == NULL) return; 909 Klass* receiver_klass = receiver->klass(); 910 911 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 912 int empty_row = -1; // free row, if any is encountered 913 914 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 915 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 916 // if (vc->receiver(row) == receiver_klass) 917 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 918 intptr_t row_recv = *(mdp + receiver_off); 919 if (row_recv == (intptr_t) receiver_klass) { 920 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 921 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 922 *(mdp + count_off) += DataLayout::counter_increment; 923 return; 924 } else if (row_recv == 0) { 925 // else if (vc->receiver(row) == NULL) 926 empty_row = (int) row; 927 } 928 } 929 930 if (empty_row != -1) { 931 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 932 // vc->set_receiver(empty_row, receiver_klass); 933 *(mdp + receiver_off) = (intptr_t) receiver_klass; 934 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 935 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 936 *(mdp + count_off) = DataLayout::counter_increment; 937 } else { 938 // Receiver did not match any saved receiver and there is no empty row for it. 939 // Increment total counter to indicate polymorphic case. 940 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 941 *count_p += DataLayout::counter_increment; 942 } 943 JRT_END 944 945 //------------------------------------------------------------------------------------- 946 // register policy 947 948 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 949 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 950 switch (register_save_policy[reg]) { 951 case 'C': return false; //SOC 952 case 'E': return true ; //SOE 953 case 'N': return false; //NS 954 case 'A': return false; //AS 955 } 956 ShouldNotReachHere(); 957 return false; 958 } 959 960 //----------------------------------------------------------------------- 961 // Exceptions 962 // 963 964 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 965 966 // The method is an entry that is always called by a C++ method not 967 // directly from compiled code. Compiled code will call the C++ method following. 968 // We can't allow async exception to be installed during exception processing. 969 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 970 971 // Do not confuse exception_oop with pending_exception. The exception_oop 972 // is only used to pass arguments into the method. Not for general 973 // exception handling. DO NOT CHANGE IT to use pending_exception, since 974 // the runtime stubs checks this on exit. 975 assert(thread->exception_oop() != NULL, "exception oop is found"); 976 address handler_address = NULL; 977 978 Handle exception(thread, thread->exception_oop()); 979 980 if (TraceExceptions) { 981 trace_exception(exception(), thread->exception_pc(), ""); 982 } 983 // for AbortVMOnException flag 984 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 985 986 #ifdef ASSERT 987 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 988 // should throw an exception here 989 ShouldNotReachHere(); 990 } 991 #endif 992 993 994 // new exception handling: this method is entered only from adapters 995 // exceptions from compiled java methods are handled in compiled code 996 // using rethrow node 997 998 address pc = thread->exception_pc(); 999 nm = CodeCache::find_nmethod(pc); 1000 assert(nm != NULL, "No NMethod found"); 1001 if (nm->is_native_method()) { 1002 fatal("Native mathod should not have path to exception handling"); 1003 } else { 1004 // we are switching to old paradigm: search for exception handler in caller_frame 1005 // instead in exception handler of caller_frame.sender() 1006 1007 if (JvmtiExport::can_post_on_exceptions()) { 1008 // "Full-speed catching" is not necessary here, 1009 // since we're notifying the VM on every catch. 1010 // Force deoptimization and the rest of the lookup 1011 // will be fine. 1012 deoptimize_caller_frame(thread); 1013 } 1014 1015 // Check the stack guard pages. If enabled, look for handler in this frame; 1016 // otherwise, forcibly unwind the frame. 1017 // 1018 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 1019 bool force_unwind = !thread->reguard_stack(); 1020 bool deopting = false; 1021 if (nm->is_deopt_pc(pc)) { 1022 deopting = true; 1023 RegisterMap map(thread, false); 1024 frame deoptee = thread->last_frame().sender(&map); 1025 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1026 // Adjust the pc back to the original throwing pc 1027 pc = deoptee.pc(); 1028 } 1029 1030 // If we are forcing an unwind because of stack overflow then deopt is 1031 // irrelevant sice we are throwing the frame away anyway. 1032 1033 if (deopting && !force_unwind) { 1034 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1035 } else { 1036 1037 handler_address = 1038 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1039 1040 if (handler_address == NULL) { 1041 Handle original_exception(thread, exception()); 1042 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1043 assert (handler_address != NULL, "must have compiled handler"); 1044 // Update the exception cache only when the unwind was not forced 1045 // and there didn't happen another exception during the computation of the 1046 // compiled exception handler. 1047 if (!force_unwind && original_exception() == exception()) { 1048 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1049 } 1050 } else { 1051 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1052 } 1053 } 1054 1055 thread->set_exception_pc(pc); 1056 thread->set_exception_handler_pc(handler_address); 1057 1058 // Check if the exception PC is a MethodHandle call site. 1059 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1060 } 1061 1062 // Restore correct return pc. Was saved above. 1063 thread->set_exception_oop(exception()); 1064 return handler_address; 1065 1066 JRT_END 1067 1068 // We are entering here from exception_blob 1069 // If there is a compiled exception handler in this method, we will continue there; 1070 // otherwise we will unwind the stack and continue at the caller of top frame method 1071 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1072 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1073 // we looked up the handler for has been deoptimized in the meantime. If it has been 1074 // we must not use the handler and instread return the deopt blob. 1075 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1076 // 1077 // We are in Java not VM and in debug mode we have a NoHandleMark 1078 // 1079 #ifndef PRODUCT 1080 SharedRuntime::_find_handler_ctr++; // find exception handler 1081 #endif 1082 debug_only(NoHandleMark __hm;) 1083 nmethod* nm = NULL; 1084 address handler_address = NULL; 1085 { 1086 // Enter the VM 1087 1088 ResetNoHandleMark rnhm; 1089 handler_address = handle_exception_C_helper(thread, nm); 1090 } 1091 1092 // Back in java: Use no oops, DON'T safepoint 1093 1094 // Now check to see if the handler we are returning is in a now 1095 // deoptimized frame 1096 1097 if (nm != NULL) { 1098 RegisterMap map(thread, false); 1099 frame caller = thread->last_frame().sender(&map); 1100 #ifdef ASSERT 1101 assert(caller.is_compiled_frame(), "must be"); 1102 #endif // ASSERT 1103 if (caller.is_deoptimized_frame()) { 1104 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1105 } 1106 } 1107 return handler_address; 1108 } 1109 1110 //------------------------------rethrow---------------------------------------- 1111 // We get here after compiled code has executed a 'RethrowNode'. The callee 1112 // is either throwing or rethrowing an exception. The callee-save registers 1113 // have been restored, synchronized objects have been unlocked and the callee 1114 // stack frame has been removed. The return address was passed in. 1115 // Exception oop is passed as the 1st argument. This routine is then called 1116 // from the stub. On exit, we know where to jump in the caller's code. 1117 // After this C code exits, the stub will pop his frame and end in a jump 1118 // (instead of a return). We enter the caller's default handler. 1119 // 1120 // This must be JRT_LEAF: 1121 // - caller will not change its state as we cannot block on exit, 1122 // therefore raw_exception_handler_for_return_address is all it takes 1123 // to handle deoptimized blobs 1124 // 1125 // However, there needs to be a safepoint check in the middle! So compiled 1126 // safepoints are completely watertight. 1127 // 1128 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1129 // 1130 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1131 // 1132 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1133 #ifndef PRODUCT 1134 SharedRuntime::_rethrow_ctr++; // count rethrows 1135 #endif 1136 assert (exception != NULL, "should have thrown a NULLPointerException"); 1137 #ifdef ASSERT 1138 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1139 // should throw an exception here 1140 ShouldNotReachHere(); 1141 } 1142 #endif 1143 1144 thread->set_vm_result(exception); 1145 // Frame not compiled (handles deoptimization blob) 1146 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1147 } 1148 1149 1150 const TypeFunc *OptoRuntime::rethrow_Type() { 1151 // create input type (domain) 1152 const Type **fields = TypeTuple::fields(1); 1153 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1154 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1155 1156 // create result type (range) 1157 fields = TypeTuple::fields(1); 1158 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1159 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1160 1161 return TypeFunc::make(domain, range); 1162 } 1163 1164 1165 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1166 // Deoptimize the caller before continuing, as the compiled 1167 // exception handler table may not be valid. 1168 if (!StressCompiledExceptionHandlers && doit) { 1169 deoptimize_caller_frame(thread); 1170 } 1171 } 1172 1173 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1174 // Called from within the owner thread, so no need for safepoint 1175 RegisterMap reg_map(thread); 1176 frame stub_frame = thread->last_frame(); 1177 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1178 frame caller_frame = stub_frame.sender(®_map); 1179 1180 // Deoptimize the caller frame. 1181 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1182 } 1183 1184 1185 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1186 // Called from within the owner thread, so no need for safepoint 1187 RegisterMap reg_map(thread); 1188 frame stub_frame = thread->last_frame(); 1189 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1190 frame caller_frame = stub_frame.sender(®_map); 1191 return caller_frame.is_deoptimized_frame(); 1192 } 1193 1194 1195 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1196 // create input type (domain) 1197 const Type **fields = TypeTuple::fields(1); 1198 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1199 // // The JavaThread* is passed to each routine as the last argument 1200 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1201 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1202 1203 // create result type (range) 1204 fields = TypeTuple::fields(0); 1205 1206 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1207 1208 return TypeFunc::make(domain,range); 1209 } 1210 1211 1212 //----------------------------------------------------------------------------- 1213 // Dtrace support. entry and exit probes have the same signature 1214 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1215 // create input type (domain) 1216 const Type **fields = TypeTuple::fields(2); 1217 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1218 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1219 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1220 1221 // create result type (range) 1222 fields = TypeTuple::fields(0); 1223 1224 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1225 1226 return TypeFunc::make(domain,range); 1227 } 1228 1229 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1230 // create input type (domain) 1231 const Type **fields = TypeTuple::fields(2); 1232 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1233 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1234 1235 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1236 1237 // create result type (range) 1238 fields = TypeTuple::fields(0); 1239 1240 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1241 1242 return TypeFunc::make(domain,range); 1243 } 1244 1245 1246 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1247 assert(obj->is_oop(), "must be a valid oop"); 1248 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1249 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1250 JRT_END 1251 1252 //----------------------------------------------------------------------------- 1253 1254 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1255 1256 // 1257 // dump the collected NamedCounters. 1258 // 1259 void OptoRuntime::print_named_counters() { 1260 int total_lock_count = 0; 1261 int eliminated_lock_count = 0; 1262 1263 NamedCounter* c = _named_counters; 1264 while (c) { 1265 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1266 int count = c->count(); 1267 if (count > 0) { 1268 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1269 if (Verbose) { 1270 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1271 } 1272 total_lock_count += count; 1273 if (eliminated) { 1274 eliminated_lock_count += count; 1275 } 1276 } 1277 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1278 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1279 if (blc->nonzero()) { 1280 tty->print_cr("%s", c->name()); 1281 blc->print_on(tty); 1282 } 1283 } 1284 c = c->next(); 1285 } 1286 if (total_lock_count > 0) { 1287 tty->print_cr("dynamic locks: %d", total_lock_count); 1288 if (eliminated_lock_count) { 1289 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1290 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1291 } 1292 } 1293 } 1294 1295 // 1296 // Allocate a new NamedCounter. The JVMState is used to generate the 1297 // name which consists of method@line for the inlining tree. 1298 // 1299 1300 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1301 int max_depth = youngest_jvms->depth(); 1302 1303 // Visit scopes from youngest to oldest. 1304 bool first = true; 1305 stringStream st; 1306 for (int depth = max_depth; depth >= 1; depth--) { 1307 JVMState* jvms = youngest_jvms->of_depth(depth); 1308 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1309 if (!first) { 1310 st.print(" "); 1311 } else { 1312 first = false; 1313 } 1314 int bci = jvms->bci(); 1315 if (bci < 0) bci = 0; 1316 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1317 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1318 } 1319 NamedCounter* c; 1320 if (tag == NamedCounter::BiasedLockingCounter) { 1321 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1322 } else { 1323 c = new NamedCounter(strdup(st.as_string()), tag); 1324 } 1325 1326 // atomically add the new counter to the head of the list. We only 1327 // add counters so this is safe. 1328 NamedCounter* head; 1329 do { 1330 head = _named_counters; 1331 c->set_next(head); 1332 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1333 return c; 1334 } 1335 1336 //----------------------------------------------------------------------------- 1337 // Non-product code 1338 #ifndef PRODUCT 1339 1340 int trace_exception_counter = 0; 1341 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1342 ttyLocker ttyl; 1343 trace_exception_counter++; 1344 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1345 exception_oop->print_value(); 1346 tty->print(" in "); 1347 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1348 if (blob->is_nmethod()) { 1349 ((nmethod*)blob)->method()->print_value(); 1350 } else if (blob->is_runtime_stub()) { 1351 tty->print("<runtime-stub>"); 1352 } else { 1353 tty->print("<unknown>"); 1354 } 1355 tty->print(" at " INTPTR_FORMAT, exception_pc); 1356 tty->print_cr("]"); 1357 } 1358 1359 #endif // PRODUCT 1360 1361 1362 # ifdef ENABLE_ZAP_DEAD_LOCALS 1363 // Called from call sites in compiled code with oop maps (actually safepoints) 1364 // Zaps dead locals in first java frame. 1365 // Is entry because may need to lock to generate oop maps 1366 // Currently, only used for compiler frames, but someday may be used 1367 // for interpreter frames, too. 1368 1369 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1370 1371 // avoid pointers to member funcs with these helpers 1372 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1373 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1374 1375 1376 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1377 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1378 assert(JavaThread::current() == thread, "is this needed?"); 1379 1380 if ( !ZapDeadCompiledLocals ) return; 1381 1382 bool skip = false; 1383 1384 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1385 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1386 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1387 warning("starting zapping after skipping"); 1388 1389 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1390 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1391 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1392 warning("about to zap last zap"); 1393 1394 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1395 1396 if ( skip ) return; 1397 1398 // find java frame and zap it 1399 1400 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1401 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1402 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1403 return; 1404 } 1405 } 1406 warning("no frame found to zap in zap_dead_Java_locals_C"); 1407 } 1408 1409 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1410 zap_dead_java_or_native_locals(thread, is_java_frame); 1411 JRT_END 1412 1413 // The following does not work because for one thing, the 1414 // thread state is wrong; it expects java, but it is native. 1415 // Also, the invariants in a native stub are different and 1416 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1417 // in there. 1418 // So for now, we do not zap in native stubs. 1419 1420 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1421 zap_dead_java_or_native_locals(thread, is_native_frame); 1422 JRT_END 1423 1424 # endif