1 /* 2 * Copyright (c) 1998, 2012, 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 // for cipherBlockChaining calls of aescrypt encrypt/decrypt, four pointers and a length, returning void 833 const TypeFunc* OptoRuntime::cipherBlockChaining_aescrypt_Type() { 834 // create input type (domain) 835 int num_args = 5; 836 int argcnt = num_args; 837 const Type** fields = TypeTuple::fields(argcnt); 838 int argp = TypeFunc::Parms; 839 fields[argp++] = TypePtr::NOTNULL; // src 840 fields[argp++] = TypePtr::NOTNULL; // dest 841 fields[argp++] = TypePtr::NOTNULL; // k array 842 fields[argp++] = TypePtr::NOTNULL; // r array 843 fields[argp++] = TypeInt::INT; // src len 844 assert(argp == TypeFunc::Parms+argcnt, "correct decoding"); 845 const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); 846 847 // no result type needed 848 fields = TypeTuple::fields(1); 849 fields[TypeFunc::Parms+0] = NULL; // void 850 const TypeTuple* range = TypeTuple::make(TypeFunc::Parms, fields); 851 return TypeFunc::make(domain, range); 852 } 853 854 //------------- Interpreter state access for on stack replacement 855 const TypeFunc* OptoRuntime::osr_end_Type() { 856 // create input type (domain) 857 const Type **fields = TypeTuple::fields(1); 858 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf 859 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); 860 861 // create result type 862 fields = TypeTuple::fields(1); 863 // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop 864 fields[TypeFunc::Parms+0] = NULL; // void 865 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 866 return TypeFunc::make(domain, range); 867 } 868 869 //-------------- methodData update helpers 870 871 const TypeFunc* OptoRuntime::profile_receiver_type_Type() { 872 // create input type (domain) 873 const Type **fields = TypeTuple::fields(2); 874 fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer 875 fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop 876 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); 877 878 // create result type 879 fields = TypeTuple::fields(1); 880 fields[TypeFunc::Parms+0] = NULL; // void 881 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); 882 return TypeFunc::make(domain,range); 883 } 884 885 JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) 886 if (receiver == NULL) return; 887 Klass* receiver_klass = receiver->klass(); 888 889 intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); 890 int empty_row = -1; // free row, if any is encountered 891 892 // ReceiverTypeData* vc = new ReceiverTypeData(mdp); 893 for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { 894 // if (vc->receiver(row) == receiver_klass) 895 int receiver_off = ReceiverTypeData::receiver_cell_index(row); 896 intptr_t row_recv = *(mdp + receiver_off); 897 if (row_recv == (intptr_t) receiver_klass) { 898 // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); 899 int count_off = ReceiverTypeData::receiver_count_cell_index(row); 900 *(mdp + count_off) += DataLayout::counter_increment; 901 return; 902 } else if (row_recv == 0) { 903 // else if (vc->receiver(row) == NULL) 904 empty_row = (int) row; 905 } 906 } 907 908 if (empty_row != -1) { 909 int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); 910 // vc->set_receiver(empty_row, receiver_klass); 911 *(mdp + receiver_off) = (intptr_t) receiver_klass; 912 // vc->set_receiver_count(empty_row, DataLayout::counter_increment); 913 int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); 914 *(mdp + count_off) = DataLayout::counter_increment; 915 } else { 916 // Receiver did not match any saved receiver and there is no empty row for it. 917 // Increment total counter to indicate polymorphic case. 918 intptr_t* count_p = (intptr_t*)(((byte*)(data)) + in_bytes(CounterData::count_offset())); 919 *count_p += DataLayout::counter_increment; 920 } 921 JRT_END 922 923 //------------------------------------------------------------------------------------- 924 // register policy 925 926 bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { 927 assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); 928 switch (register_save_policy[reg]) { 929 case 'C': return false; //SOC 930 case 'E': return true ; //SOE 931 case 'N': return false; //NS 932 case 'A': return false; //AS 933 } 934 ShouldNotReachHere(); 935 return false; 936 } 937 938 //----------------------------------------------------------------------- 939 // Exceptions 940 // 941 942 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; 943 944 // The method is an entry that is always called by a C++ method not 945 // directly from compiled code. Compiled code will call the C++ method following. 946 // We can't allow async exception to be installed during exception processing. 947 JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) 948 949 // Do not confuse exception_oop with pending_exception. The exception_oop 950 // is only used to pass arguments into the method. Not for general 951 // exception handling. DO NOT CHANGE IT to use pending_exception, since 952 // the runtime stubs checks this on exit. 953 assert(thread->exception_oop() != NULL, "exception oop is found"); 954 address handler_address = NULL; 955 956 Handle exception(thread, thread->exception_oop()); 957 958 if (TraceExceptions) { 959 trace_exception(exception(), thread->exception_pc(), ""); 960 } 961 // for AbortVMOnException flag 962 NOT_PRODUCT(Exceptions::debug_check_abort(exception)); 963 964 #ifdef ASSERT 965 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 966 // should throw an exception here 967 ShouldNotReachHere(); 968 } 969 #endif 970 971 972 // new exception handling: this method is entered only from adapters 973 // exceptions from compiled java methods are handled in compiled code 974 // using rethrow node 975 976 address pc = thread->exception_pc(); 977 nm = CodeCache::find_nmethod(pc); 978 assert(nm != NULL, "No NMethod found"); 979 if (nm->is_native_method()) { 980 fatal("Native mathod should not have path to exception handling"); 981 } else { 982 // we are switching to old paradigm: search for exception handler in caller_frame 983 // instead in exception handler of caller_frame.sender() 984 985 if (JvmtiExport::can_post_on_exceptions()) { 986 // "Full-speed catching" is not necessary here, 987 // since we're notifying the VM on every catch. 988 // Force deoptimization and the rest of the lookup 989 // will be fine. 990 deoptimize_caller_frame(thread); 991 } 992 993 // Check the stack guard pages. If enabled, look for handler in this frame; 994 // otherwise, forcibly unwind the frame. 995 // 996 // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. 997 bool force_unwind = !thread->reguard_stack(); 998 bool deopting = false; 999 if (nm->is_deopt_pc(pc)) { 1000 deopting = true; 1001 RegisterMap map(thread, false); 1002 frame deoptee = thread->last_frame().sender(&map); 1003 assert(deoptee.is_deoptimized_frame(), "must be deopted"); 1004 // Adjust the pc back to the original throwing pc 1005 pc = deoptee.pc(); 1006 } 1007 1008 // If we are forcing an unwind because of stack overflow then deopt is 1009 // irrelevant sice we are throwing the frame away anyway. 1010 1011 if (deopting && !force_unwind) { 1012 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1013 } else { 1014 1015 handler_address = 1016 force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); 1017 1018 if (handler_address == NULL) { 1019 Handle original_exception(thread, exception()); 1020 handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); 1021 assert (handler_address != NULL, "must have compiled handler"); 1022 // Update the exception cache only when the unwind was not forced 1023 // and there didn't happen another exception during the computation of the 1024 // compiled exception handler. 1025 if (!force_unwind && original_exception() == exception()) { 1026 nm->add_handler_for_exception_and_pc(exception,pc,handler_address); 1027 } 1028 } else { 1029 assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); 1030 } 1031 } 1032 1033 thread->set_exception_pc(pc); 1034 thread->set_exception_handler_pc(handler_address); 1035 1036 // Check if the exception PC is a MethodHandle call site. 1037 thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); 1038 } 1039 1040 // Restore correct return pc. Was saved above. 1041 thread->set_exception_oop(exception()); 1042 return handler_address; 1043 1044 JRT_END 1045 1046 // We are entering here from exception_blob 1047 // If there is a compiled exception handler in this method, we will continue there; 1048 // otherwise we will unwind the stack and continue at the caller of top frame method 1049 // Note we enter without the usual JRT wrapper. We will call a helper routine that 1050 // will do the normal VM entry. We do it this way so that we can see if the nmethod 1051 // we looked up the handler for has been deoptimized in the meantime. If it has been 1052 // we must not use the handler and instread return the deopt blob. 1053 address OptoRuntime::handle_exception_C(JavaThread* thread) { 1054 // 1055 // We are in Java not VM and in debug mode we have a NoHandleMark 1056 // 1057 #ifndef PRODUCT 1058 SharedRuntime::_find_handler_ctr++; // find exception handler 1059 #endif 1060 debug_only(NoHandleMark __hm;) 1061 nmethod* nm = NULL; 1062 address handler_address = NULL; 1063 { 1064 // Enter the VM 1065 1066 ResetNoHandleMark rnhm; 1067 handler_address = handle_exception_C_helper(thread, nm); 1068 } 1069 1070 // Back in java: Use no oops, DON'T safepoint 1071 1072 // Now check to see if the handler we are returning is in a now 1073 // deoptimized frame 1074 1075 if (nm != NULL) { 1076 RegisterMap map(thread, false); 1077 frame caller = thread->last_frame().sender(&map); 1078 #ifdef ASSERT 1079 assert(caller.is_compiled_frame(), "must be"); 1080 #endif // ASSERT 1081 if (caller.is_deoptimized_frame()) { 1082 handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); 1083 } 1084 } 1085 return handler_address; 1086 } 1087 1088 //------------------------------rethrow---------------------------------------- 1089 // We get here after compiled code has executed a 'RethrowNode'. The callee 1090 // is either throwing or rethrowing an exception. The callee-save registers 1091 // have been restored, synchronized objects have been unlocked and the callee 1092 // stack frame has been removed. The return address was passed in. 1093 // Exception oop is passed as the 1st argument. This routine is then called 1094 // from the stub. On exit, we know where to jump in the caller's code. 1095 // After this C code exits, the stub will pop his frame and end in a jump 1096 // (instead of a return). We enter the caller's default handler. 1097 // 1098 // This must be JRT_LEAF: 1099 // - caller will not change its state as we cannot block on exit, 1100 // therefore raw_exception_handler_for_return_address is all it takes 1101 // to handle deoptimized blobs 1102 // 1103 // However, there needs to be a safepoint check in the middle! So compiled 1104 // safepoints are completely watertight. 1105 // 1106 // Thus, it cannot be a leaf since it contains the No_GC_Verifier. 1107 // 1108 // *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* 1109 // 1110 address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { 1111 #ifndef PRODUCT 1112 SharedRuntime::_rethrow_ctr++; // count rethrows 1113 #endif 1114 assert (exception != NULL, "should have thrown a NULLPointerException"); 1115 #ifdef ASSERT 1116 if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { 1117 // should throw an exception here 1118 ShouldNotReachHere(); 1119 } 1120 #endif 1121 1122 thread->set_vm_result(exception); 1123 // Frame not compiled (handles deoptimization blob) 1124 return SharedRuntime::raw_exception_handler_for_return_address(thread, ret_pc); 1125 } 1126 1127 1128 const TypeFunc *OptoRuntime::rethrow_Type() { 1129 // create input type (domain) 1130 const Type **fields = TypeTuple::fields(1); 1131 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1132 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1133 1134 // create result type (range) 1135 fields = TypeTuple::fields(1); 1136 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop 1137 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); 1138 1139 return TypeFunc::make(domain, range); 1140 } 1141 1142 1143 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { 1144 // Deoptimize the caller before continuing, as the compiled 1145 // exception handler table may not be valid. 1146 if (!StressCompiledExceptionHandlers && doit) { 1147 deoptimize_caller_frame(thread); 1148 } 1149 } 1150 1151 void OptoRuntime::deoptimize_caller_frame(JavaThread *thread) { 1152 // Called from within the owner thread, so no need for safepoint 1153 RegisterMap reg_map(thread); 1154 frame stub_frame = thread->last_frame(); 1155 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1156 frame caller_frame = stub_frame.sender(®_map); 1157 1158 // Deoptimize the caller frame. 1159 Deoptimization::deoptimize_frame(thread, caller_frame.id()); 1160 } 1161 1162 1163 bool OptoRuntime::is_deoptimized_caller_frame(JavaThread *thread) { 1164 // Called from within the owner thread, so no need for safepoint 1165 RegisterMap reg_map(thread); 1166 frame stub_frame = thread->last_frame(); 1167 assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); 1168 frame caller_frame = stub_frame.sender(®_map); 1169 return caller_frame.is_deoptimized_frame(); 1170 } 1171 1172 1173 const TypeFunc *OptoRuntime::register_finalizer_Type() { 1174 // create input type (domain) 1175 const Type **fields = TypeTuple::fields(1); 1176 fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver 1177 // // The JavaThread* is passed to each routine as the last argument 1178 // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread 1179 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); 1180 1181 // create result type (range) 1182 fields = TypeTuple::fields(0); 1183 1184 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1185 1186 return TypeFunc::make(domain,range); 1187 } 1188 1189 1190 //----------------------------------------------------------------------------- 1191 // Dtrace support. entry and exit probes have the same signature 1192 const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { 1193 // create input type (domain) 1194 const Type **fields = TypeTuple::fields(2); 1195 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1196 fields[TypeFunc::Parms+1] = TypeMetadataPtr::BOTTOM; // Method*; Method we are entering 1197 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1198 1199 // create result type (range) 1200 fields = TypeTuple::fields(0); 1201 1202 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1203 1204 return TypeFunc::make(domain,range); 1205 } 1206 1207 const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { 1208 // create input type (domain) 1209 const Type **fields = TypeTuple::fields(2); 1210 fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage 1211 fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object 1212 1213 const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); 1214 1215 // create result type (range) 1216 fields = TypeTuple::fields(0); 1217 1218 const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); 1219 1220 return TypeFunc::make(domain,range); 1221 } 1222 1223 1224 JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) 1225 assert(obj->is_oop(), "must be a valid oop"); 1226 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 1227 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 1228 JRT_END 1229 1230 //----------------------------------------------------------------------------- 1231 1232 NamedCounter * volatile OptoRuntime::_named_counters = NULL; 1233 1234 // 1235 // dump the collected NamedCounters. 1236 // 1237 void OptoRuntime::print_named_counters() { 1238 int total_lock_count = 0; 1239 int eliminated_lock_count = 0; 1240 1241 NamedCounter* c = _named_counters; 1242 while (c) { 1243 if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { 1244 int count = c->count(); 1245 if (count > 0) { 1246 bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; 1247 if (Verbose) { 1248 tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); 1249 } 1250 total_lock_count += count; 1251 if (eliminated) { 1252 eliminated_lock_count += count; 1253 } 1254 } 1255 } else if (c->tag() == NamedCounter::BiasedLockingCounter) { 1256 BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); 1257 if (blc->nonzero()) { 1258 tty->print_cr("%s", c->name()); 1259 blc->print_on(tty); 1260 } 1261 } 1262 c = c->next(); 1263 } 1264 if (total_lock_count > 0) { 1265 tty->print_cr("dynamic locks: %d", total_lock_count); 1266 if (eliminated_lock_count) { 1267 tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, 1268 (int)(eliminated_lock_count * 100.0 / total_lock_count)); 1269 } 1270 } 1271 } 1272 1273 // 1274 // Allocate a new NamedCounter. The JVMState is used to generate the 1275 // name which consists of method@line for the inlining tree. 1276 // 1277 1278 NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { 1279 int max_depth = youngest_jvms->depth(); 1280 1281 // Visit scopes from youngest to oldest. 1282 bool first = true; 1283 stringStream st; 1284 for (int depth = max_depth; depth >= 1; depth--) { 1285 JVMState* jvms = youngest_jvms->of_depth(depth); 1286 ciMethod* m = jvms->has_method() ? jvms->method() : NULL; 1287 if (!first) { 1288 st.print(" "); 1289 } else { 1290 first = false; 1291 } 1292 int bci = jvms->bci(); 1293 if (bci < 0) bci = 0; 1294 st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); 1295 // To print linenumbers instead of bci use: m->line_number_from_bci(bci) 1296 } 1297 NamedCounter* c; 1298 if (tag == NamedCounter::BiasedLockingCounter) { 1299 c = new BiasedLockingNamedCounter(strdup(st.as_string())); 1300 } else { 1301 c = new NamedCounter(strdup(st.as_string()), tag); 1302 } 1303 1304 // atomically add the new counter to the head of the list. We only 1305 // add counters so this is safe. 1306 NamedCounter* head; 1307 do { 1308 head = _named_counters; 1309 c->set_next(head); 1310 } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); 1311 return c; 1312 } 1313 1314 //----------------------------------------------------------------------------- 1315 // Non-product code 1316 #ifndef PRODUCT 1317 1318 int trace_exception_counter = 0; 1319 static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { 1320 ttyLocker ttyl; 1321 trace_exception_counter++; 1322 tty->print("%d [Exception (%s): ", trace_exception_counter, msg); 1323 exception_oop->print_value(); 1324 tty->print(" in "); 1325 CodeBlob* blob = CodeCache::find_blob(exception_pc); 1326 if (blob->is_nmethod()) { 1327 ((nmethod*)blob)->method()->print_value(); 1328 } else if (blob->is_runtime_stub()) { 1329 tty->print("<runtime-stub>"); 1330 } else { 1331 tty->print("<unknown>"); 1332 } 1333 tty->print(" at " INTPTR_FORMAT, exception_pc); 1334 tty->print_cr("]"); 1335 } 1336 1337 #endif // PRODUCT 1338 1339 1340 # ifdef ENABLE_ZAP_DEAD_LOCALS 1341 // Called from call sites in compiled code with oop maps (actually safepoints) 1342 // Zaps dead locals in first java frame. 1343 // Is entry because may need to lock to generate oop maps 1344 // Currently, only used for compiler frames, but someday may be used 1345 // for interpreter frames, too. 1346 1347 int OptoRuntime::ZapDeadCompiledLocals_count = 0; 1348 1349 // avoid pointers to member funcs with these helpers 1350 static bool is_java_frame( frame* f) { return f->is_java_frame(); } 1351 static bool is_native_frame(frame* f) { return f->is_native_frame(); } 1352 1353 1354 void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, 1355 bool (*is_this_the_right_frame_to_zap)(frame*)) { 1356 assert(JavaThread::current() == thread, "is this needed?"); 1357 1358 if ( !ZapDeadCompiledLocals ) return; 1359 1360 bool skip = false; 1361 1362 if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special 1363 else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; 1364 else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) 1365 warning("starting zapping after skipping"); 1366 1367 if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special 1368 else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; 1369 else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) 1370 warning("about to zap last zap"); 1371 1372 ++ZapDeadCompiledLocals_count; // counts skipped zaps, too 1373 1374 if ( skip ) return; 1375 1376 // find java frame and zap it 1377 1378 for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { 1379 if (is_this_the_right_frame_to_zap(sfs.current()) ) { 1380 sfs.current()->zap_dead_locals(thread, sfs.register_map()); 1381 return; 1382 } 1383 } 1384 warning("no frame found to zap in zap_dead_Java_locals_C"); 1385 } 1386 1387 JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) 1388 zap_dead_java_or_native_locals(thread, is_java_frame); 1389 JRT_END 1390 1391 // The following does not work because for one thing, the 1392 // thread state is wrong; it expects java, but it is native. 1393 // Also, the invariants in a native stub are different and 1394 // I'm not sure it is safe to have a MachCalRuntimeDirectNode 1395 // in there. 1396 // So for now, we do not zap in native stubs. 1397 1398 JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) 1399 zap_dead_java_or_native_locals(thread, is_native_frame); 1400 JRT_END 1401 1402 # endif