1 /* 2 * Copyright (c) 1997, 2017, 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/javaClasses.inline.hpp" 27 #include "classfile/systemDictionary.hpp" 28 #include "classfile/vmSymbols.hpp" 29 #include "code/codeCache.hpp" 30 #include "compiler/compileBroker.hpp" 31 #include "compiler/disassembler.hpp" 32 #include "gc/shared/collectedHeap.hpp" 33 #include "interpreter/interpreter.hpp" 34 #include "interpreter/interpreterRuntime.hpp" 35 #include "interpreter/linkResolver.hpp" 36 #include "interpreter/templateTable.hpp" 37 #include "logging/log.hpp" 38 #include "memory/oopFactory.hpp" 39 #include "memory/resourceArea.hpp" 40 #include "memory/universe.inline.hpp" 41 #include "oops/constantPool.hpp" 42 #include "oops/instanceKlass.hpp" 43 #include "oops/methodData.hpp" 44 #include "oops/objArrayKlass.hpp" 45 #include "oops/objArrayOop.inline.hpp" 46 #include "oops/oop.inline.hpp" 47 #include "oops/symbol.hpp" 48 #include "oops/valueKlass.hpp" 49 #include "oops/valueArrayKlass.hpp" 50 #include "oops/valueArrayOop.hpp" 51 #include "prims/jvmtiExport.hpp" 52 #include "prims/nativeLookup.hpp" 53 #include "runtime/atomic.hpp" 54 #include "runtime/biasedLocking.hpp" 55 #include "runtime/compilationPolicy.hpp" 56 #include "runtime/deoptimization.hpp" 57 #include "runtime/fieldDescriptor.hpp" 58 #include "runtime/handles.inline.hpp" 59 #include "runtime/icache.hpp" 60 #include "runtime/interfaceSupport.hpp" 61 #include "runtime/java.hpp" 62 #include "runtime/jfieldIDWorkaround.hpp" 63 #include "runtime/osThread.hpp" 64 #include "runtime/sharedRuntime.hpp" 65 #include "runtime/stubRoutines.hpp" 66 #include "runtime/synchronizer.hpp" 67 #include "runtime/threadCritical.hpp" 68 #include "utilities/events.hpp" 69 #include "utilities/globalDefinitions.hpp" 70 #ifdef COMPILER2 71 #include "opto/runtime.hpp" 72 #endif 73 74 class UnlockFlagSaver { 75 private: 76 JavaThread* _thread; 77 bool _do_not_unlock; 78 public: 79 UnlockFlagSaver(JavaThread* t) { 80 _thread = t; 81 _do_not_unlock = t->do_not_unlock_if_synchronized(); 82 t->set_do_not_unlock_if_synchronized(false); 83 } 84 ~UnlockFlagSaver() { 85 _thread->set_do_not_unlock_if_synchronized(_do_not_unlock); 86 } 87 }; 88 89 //------------------------------------------------------------------------------------------------------------------------ 90 // State accessors 91 92 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread *thread) { 93 last_frame(thread).interpreter_frame_set_bcp(bcp); 94 if (ProfileInterpreter) { 95 // ProfileTraps uses MDOs independently of ProfileInterpreter. 96 // That is why we must check both ProfileInterpreter and mdo != NULL. 97 MethodData* mdo = last_frame(thread).interpreter_frame_method()->method_data(); 98 if (mdo != NULL) { 99 NEEDS_CLEANUP; 100 last_frame(thread).interpreter_frame_set_mdp(mdo->bci_to_dp(last_frame(thread).interpreter_frame_bci())); 101 } 102 } 103 } 104 105 //------------------------------------------------------------------------------------------------------------------------ 106 // Constants 107 108 109 IRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* thread, bool wide)) 110 // access constant pool 111 ConstantPool* pool = method(thread)->constants(); 112 int index = wide ? get_index_u2(thread, Bytecodes::_ldc_w) : get_index_u1(thread, Bytecodes::_ldc); 113 constantTag tag = pool->tag_at(index); 114 115 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call"); 116 Klass* klass = pool->klass_at(index, CHECK); 117 oop java_class = klass->java_mirror(); 118 thread->set_vm_result(java_class); 119 IRT_END 120 121 IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) { 122 assert(bytecode == Bytecodes::_fast_aldc || 123 bytecode == Bytecodes::_fast_aldc_w, "wrong bc"); 124 ResourceMark rm(thread); 125 methodHandle m (thread, method(thread)); 126 Bytecode_loadconstant ldc(m, bci(thread)); 127 oop result = ldc.resolve_constant(CHECK); 128 #ifdef ASSERT 129 { 130 // The bytecode wrappers aren't GC-safe so construct a new one 131 Bytecode_loadconstant ldc2(m, bci(thread)); 132 oop coop = m->constants()->resolved_references()->obj_at(ldc2.cache_index()); 133 assert(result == coop, "expected result for assembly code"); 134 } 135 #endif 136 thread->set_vm_result(result); 137 } 138 IRT_END 139 140 141 //------------------------------------------------------------------------------------------------------------------------ 142 // Allocation 143 144 IRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* thread, ConstantPool* pool, int index)) 145 Klass* k = pool->klass_at(index, CHECK); 146 InstanceKlass* klass = InstanceKlass::cast(k); 147 148 // Make sure we are not instantiating an abstract klass 149 klass->check_valid_for_instantiation(true, CHECK); 150 151 // Make sure klass is initialized 152 klass->initialize(CHECK); 153 154 // At this point the class may not be fully initialized 155 // because of recursive initialization. If it is fully 156 // initialized & has_finalized is not set, we rewrite 157 // it into its fast version (Note: no locking is needed 158 // here since this is an atomic byte write and can be 159 // done more than once). 160 // 161 // Note: In case of classes with has_finalized we don't 162 // rewrite since that saves us an extra check in 163 // the fast version which then would call the 164 // slow version anyway (and do a call back into 165 // Java). 166 // If we have a breakpoint, then we don't rewrite 167 // because the _breakpoint bytecode would be lost. 168 oop obj = klass->allocate_instance(CHECK); 169 thread->set_vm_result(obj); 170 IRT_END 171 172 void copy_primitive_argument(intptr_t* addr, Handle instance, int offset, BasicType type) { 173 switch (type) { 174 case T_BOOLEAN: 175 instance()->bool_field_put(offset, (jboolean)*((int*)addr)); 176 break; 177 case T_CHAR: 178 instance()->char_field_put(offset, (jchar) *((int*)addr)); 179 break; 180 case T_FLOAT: 181 instance()->float_field_put(offset, (jfloat)*((float*)addr)); 182 break; 183 case T_DOUBLE: 184 instance()->double_field_put(offset, (jdouble)*((double*)addr)); 185 break; 186 case T_BYTE: 187 instance()->byte_field_put(offset, (jbyte)*((int*)addr)); 188 break; 189 case T_SHORT: 190 instance()->short_field_put(offset, (jshort)*((int*)addr)); 191 break; 192 case T_INT: 193 instance()->int_field_put(offset, (jint)*((int*)addr)); 194 break; 195 case T_LONG: 196 instance()->long_field_put(offset, (jlong)*((long*)addr)); // Is it correct on 32 and 64 bits? 197 break; 198 case T_OBJECT: 199 case T_ARRAY: 200 case T_VALUETYPE: 201 fatal("Should not be handled with this method"); 202 break; 203 default: 204 fatal("Unsupported BasicType"); 205 } 206 } 207 208 IRT_ENTRY(void, InterpreterRuntime::vdefault(JavaThread* thread, ConstantPool* pool, int index)) 209 // Getting the ValueKlass 210 Klass* k = pool->klass_at(index, CHECK); 211 assert(k->is_value(), "vdefault argument must be the value type class"); 212 ValueKlass* vklass = ValueKlass::cast(k); 213 214 vklass->initialize(THREAD); 215 216 // Creating value 217 instanceOop value = vklass->allocate_instance(CHECK); 218 Handle value_h = Handle(THREAD, value); 219 220 // Zeroing, already performed by allocate_instance() when allocating in the Java Heap 221 // Might need to be performed manually for off-heap allocations 222 // memset(((char*)(oopDesc*)value) + vklass_h->first_field_offset(), 0, 223 // vklass_h->size_helper() * wordSize - vklass_h->first_field_offset()); 224 225 thread->set_vm_result(value_h()); 226 IRT_END 227 228 IRT_ENTRY(int, InterpreterRuntime::vwithfield(JavaThread* thread, ConstantPoolCache* cp_cache)) 229 // Getting the ValueKlass 230 int index = ConstantPool::decode_cpcache_index(get_index_u2_cpcache(thread, Bytecodes::_vwithfield)); 231 ConstantPoolCacheEntry* cp_entry = cp_cache->entry_at(index); 232 assert(cp_entry->is_resolved(Bytecodes::_vwithfield), "Should have been resolved"); 233 Klass* klass = cp_entry->f1_as_klass(); 234 assert(klass->is_value(), "vwithfield only applies to value types"); 235 ValueKlass* vklass = ValueKlass::cast(klass); 236 237 // Getting Field information 238 int offset = cp_entry->f2_as_index(); 239 fieldDescriptor fd; 240 vklass->find_field_from_offset(offset, false, &fd); 241 Symbol* field_signature = fd.signature(); 242 ResourceMark rm(THREAD); 243 const char* signature = (const char *) field_signature->as_utf8(); 244 BasicType field_type = char2type(signature[0]); 245 246 // Getting old value 247 frame f = last_frame(thread); 248 jint tos_idx = f.interpreter_frame_expression_stack_size() - 1; 249 int vt_offset = type2size[field_type]; 250 oop old_value = *(oop*)f.interpreter_frame_expression_stack_at(tos_idx - vt_offset); 251 assert(old_value != NULL && old_value->is_oop() && old_value->is_value(),"Verifying receiver"); 252 Handle old_value_h(THREAD, old_value); 253 254 // Creating new value by copying the one passed in argument 255 instanceOop new_value = vklass->allocate_instance(CHECK_0); 256 Handle new_value_h = Handle(THREAD, new_value); 257 int first_offset = vklass->first_field_offset(); 258 vklass->value_store(((char*)(oopDesc*)old_value_h()) + first_offset, 259 ((char*)(oopDesc*)new_value_h()) + first_offset, true, false); 260 261 // Updating the field specified in arguments 262 if (field_type == T_OBJECT || field_type == T_ARRAY) { 263 oop aoop = *(oop*)f.interpreter_frame_expression_stack_at(tos_idx); 264 assert(aoop == NULL || (aoop->is_oop() && (!aoop->is_value())),"argument must be a reference type"); 265 new_value_h()->obj_field_put(fd.offset(), aoop); 266 } else if (field_type == T_VALUETYPE) { 267 Klass* field_k = vklass->get_value_field_klass(fd.index()); 268 ValueKlass* field_vk = ValueKlass::cast(field_k); 269 oop vt_oop = *(oop*)f.interpreter_frame_expression_stack_at(tos_idx); 270 assert(vt_oop != NULL && vt_oop->is_oop() && vt_oop->is_value(),"argument must be a value type"); 271 assert(field_vk == vt_oop->klass(), "Must match"); 272 field_vk->value_store(((char*)(oopDesc*)vt_oop + field_vk->first_field_offset()), 273 ((char*)(oopDesc*)new_value_h()) + fd.offset(), true, false); 274 } else { 275 intptr_t* addr = f.interpreter_frame_expression_stack_at(tos_idx); 276 copy_primitive_argument(addr, new_value_h, fd.offset(), field_type); 277 } 278 279 // returning result 280 thread->set_vm_result(new_value_h()); 281 return (type2size[field_type] + type2size[T_VALUETYPE]) * AbstractInterpreter::stackElementSize; 282 IRT_END 283 284 IRT_ENTRY(void, InterpreterRuntime::vbox(JavaThread* thread, ConstantPool* pool, int index, oopDesc* value)) 285 assert(EnableMVT, "vbox is supported only when the MVT programming model is enabled"); 286 if (value == NULL) { 287 THROW(vmSymbols::java_lang_NullPointerException()); 288 } 289 290 // Since the verifier is probably disabled, a few extra type check 291 Klass* target_klass = pool->klass_at(index, CHECK); 292 if (target_klass->is_value()) { 293 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vbox target is value type"); 294 } 295 Klass* klass = value->klass(); 296 if (!klass->is_value()) { 297 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vbox not from value type"); 298 } 299 ValueKlass* vtklass = ValueKlass::cast(klass); 300 if (vtklass->get_vcc_klass() != target_klass) { 301 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vbox target is not derive value type box"); 302 } 303 304 oop boxed = vtklass->derive_value_type_copy(Handle(THREAD, value), 305 InstanceKlass::cast(target_klass), 306 CHECK); 307 thread->set_vm_result(boxed); 308 IRT_END 309 310 IRT_ENTRY(void, InterpreterRuntime::vunbox(JavaThread* thread, ConstantPool* pool, int index, oopDesc* obj)) 311 assert(EnableMVT, "vunbox is supported only when the MVT programming model is enabled"); 312 if (obj == NULL) { 313 THROW(vmSymbols::java_lang_NullPointerException()); 314 } 315 Klass* target_klass = pool->klass_at(index, CHECK); 316 if (!target_klass->is_value()) { 317 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vunbox target is not value type"); 318 } 319 Klass* klass = obj->klass(); 320 if ((!klass->is_instance_klass()) || klass->is_value()) { 321 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vunbox source is not an instance"); 322 } 323 if (klass != InstanceKlass::cast(target_klass)->get_vcc_klass()) { 324 THROW_MSG(vmSymbols::java_lang_ClassCastException(), "vunbox target is not derive value type"); 325 } 326 oop value = ValueKlass::cast(target_klass)->derive_value_type_copy(Handle(THREAD, obj), 327 InstanceKlass::cast(target_klass), 328 CHECK); 329 thread->set_vm_result(value); 330 IRT_END 331 332 IRT_ENTRY(void, InterpreterRuntime::qgetfield(JavaThread* thread, oopDesc* value, int offset)) 333 Handle value_h(THREAD, value); 334 InstanceKlass* klass = InstanceKlass::cast(value->klass()); 335 336 fieldDescriptor fd; 337 klass->find_field_from_offset(offset, false, &fd); 338 Klass* field_k = klass->get_value_field_klass(fd.index()); 339 ValueKlass* field_vklass = ValueKlass::cast(field_k); 340 // allocate instance 341 instanceOop res = field_vklass->allocate_instance(CHECK); 342 // copy value 343 int size = field_vklass->layout_helper_size_in_bytes(field_vklass->layout_helper()); 344 field_vklass->value_store(((char*)(oopDesc*)value_h()) + offset, 345 ((char*)(oopDesc*)res) + field_vklass->first_field_offset(),true, false); 346 thread->set_vm_result(res); 347 IRT_END 348 349 IRT_ENTRY(void, InterpreterRuntime::qputfield(JavaThread* thread, oopDesc* obj, oopDesc* value, int offset)) 350 Handle value_h(THREAD, value); 351 Handle obj_h(THREAD, obj); 352 353 InstanceKlass* klass_h = InstanceKlass::cast(obj->klass()); 354 ValueKlass* field_vklass = ValueKlass::cast(value->klass()); 355 356 // copy value 357 int size = field_vklass->layout_helper_size_in_bytes(field_vklass->layout_helper()); 358 field_vklass->value_store(((char*)(oopDesc*)value_h()) + field_vklass->first_field_offset(), 359 ((char*)(oopDesc*)obj_h()) + offset, true, false); 360 IRT_END 361 362 IRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* thread, BasicType type, jint size)) 363 oop obj = oopFactory::new_typeArray(type, size, CHECK); 364 thread->set_vm_result(obj); 365 IRT_END 366 367 368 IRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* thread, ConstantPool* pool, int index, jint size)) 369 Klass* klass = pool->klass_at(index, CHECK); 370 if (klass->is_value()) { // Logically creates elements, ensure klass init 371 klass->initialize(CHECK); 372 } 373 arrayOop obj = oopFactory::new_array(klass, size, CHECK); 374 thread->set_vm_result(obj); 375 IRT_END 376 377 IRT_ENTRY(void, InterpreterRuntime::value_array_load(JavaThread* thread, arrayOopDesc* array, int index)) 378 Klass* klass = array->klass(); 379 assert(klass->is_valueArray_klass() || klass->is_objArray_klass(), "expected value or object array oop"); 380 381 if (klass->is_objArray_klass()) { 382 thread->set_vm_result(((objArrayOop) array)->obj_at(index)); 383 } 384 else { 385 // Early prototype: we don't have valorind support...just allocate aref and copy 386 ValueArrayKlass* vaklass = ValueArrayKlass::cast(klass); 387 ValueKlass* vklass = vaklass->element_klass(); 388 arrayHandle ah(THREAD, array); 389 instanceOop value_holder = vklass->allocate_instance(CHECK); 390 void* src = ((valueArrayOop)ah())->value_at_addr(index, vaklass->layout_helper()); 391 vklass->value_store(src, vklass->data_for_oop(value_holder), 392 vaklass->element_byte_size(), true, true); 393 thread->set_vm_result(value_holder); 394 } 395 IRT_END 396 397 IRT_ENTRY(void, InterpreterRuntime::value_array_store(JavaThread* thread, arrayOopDesc* array, int index, void* val)) 398 Klass* klass = array->klass(); 399 assert(klass->is_valueArray_klass() || klass->is_objArray_klass(), "expected value or object array oop"); 400 401 if (ArrayKlass::cast(klass)->element_klass() != ((oop)val)->klass()) { 402 THROW(vmSymbols::java_lang_ArrayStoreException()); 403 } 404 if (klass->is_objArray_klass()) { 405 ((objArrayOop) array)->obj_at_put(index, (oop)val); 406 } 407 else { 408 valueArrayOop varray = (valueArrayOop)array; 409 ValueArrayKlass* vaklass = ValueArrayKlass::cast(klass); 410 ValueKlass* vklass = vaklass->element_klass(); 411 const int lh = vaklass->layout_helper(); 412 vklass->value_store(vklass->data_for_oop((oop)val), varray->value_at_addr(index, lh), 413 vaklass->element_byte_size(), true, false); 414 } 415 IRT_END 416 417 IRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* thread, jint* first_size_address)) 418 // We may want to pass in more arguments - could make this slightly faster 419 ConstantPool* constants = method(thread)->constants(); 420 int i = get_index_u2(thread, Bytecodes::_multianewarray); 421 Klass* klass = constants->klass_at(i, CHECK); 422 int nof_dims = number_of_dimensions(thread); 423 assert(klass->is_klass(), "not a class"); 424 assert(nof_dims >= 1, "multianewarray rank must be nonzero"); 425 426 if (klass->is_value()) { // Logically creates elements, ensure klass init 427 klass->initialize(CHECK); 428 } 429 430 // We must create an array of jints to pass to multi_allocate. 431 ResourceMark rm(thread); 432 const int small_dims = 10; 433 jint dim_array[small_dims]; 434 jint *dims = &dim_array[0]; 435 if (nof_dims > small_dims) { 436 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims); 437 } 438 for (int index = 0; index < nof_dims; index++) { 439 // offset from first_size_address is addressed as local[index] 440 int n = Interpreter::local_offset_in_bytes(index)/jintSize; 441 dims[index] = first_size_address[n]; 442 } 443 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK); 444 thread->set_vm_result(obj); 445 IRT_END 446 447 448 IRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* thread, oopDesc* obj)) 449 assert(obj->is_oop(), "must be a valid oop"); 450 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise"); 451 InstanceKlass::register_finalizer(instanceOop(obj), CHECK); 452 IRT_END 453 454 455 // Quicken instance-of and check-cast bytecodes 456 IRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* thread)) 457 // Force resolving; quicken the bytecode 458 int which = get_index_u2(thread, Bytecodes::_checkcast); 459 ConstantPool* cpool = method(thread)->constants(); 460 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded 461 // program we might have seen an unquick'd bytecode in the interpreter but have another 462 // thread quicken the bytecode before we get here. 463 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" ); 464 Klass* klass = cpool->klass_at(which, CHECK); 465 thread->set_vm_result_2(klass); 466 IRT_END 467 468 469 //------------------------------------------------------------------------------------------------------------------------ 470 // Exceptions 471 472 void InterpreterRuntime::note_trap_inner(JavaThread* thread, int reason, 473 methodHandle trap_method, int trap_bci, TRAPS) { 474 if (trap_method.not_null()) { 475 MethodData* trap_mdo = trap_method->method_data(); 476 if (trap_mdo == NULL) { 477 Method::build_interpreter_method_data(trap_method, THREAD); 478 if (HAS_PENDING_EXCEPTION) { 479 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), 480 "we expect only an OOM error here"); 481 CLEAR_PENDING_EXCEPTION; 482 } 483 trap_mdo = trap_method->method_data(); 484 // and fall through... 485 } 486 if (trap_mdo != NULL) { 487 // Update per-method count of trap events. The interpreter 488 // is updating the MDO to simulate the effect of compiler traps. 489 Deoptimization::update_method_data_from_interpreter(trap_mdo, trap_bci, reason); 490 } 491 } 492 } 493 494 // Assume the compiler is (or will be) interested in this event. 495 // If necessary, create an MDO to hold the information, and record it. 496 void InterpreterRuntime::note_trap(JavaThread* thread, int reason, TRAPS) { 497 assert(ProfileTraps, "call me only if profiling"); 498 methodHandle trap_method(thread, method(thread)); 499 int trap_bci = trap_method->bci_from(bcp(thread)); 500 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); 501 } 502 503 #ifdef CC_INTERP 504 // As legacy note_trap, but we have more arguments. 505 IRT_ENTRY(void, InterpreterRuntime::note_trap(JavaThread* thread, int reason, Method *method, int trap_bci)) 506 methodHandle trap_method(method); 507 note_trap_inner(thread, reason, trap_method, trap_bci, THREAD); 508 IRT_END 509 510 // Class Deoptimization is not visible in BytecodeInterpreter, so we need a wrapper 511 // for each exception. 512 void InterpreterRuntime::note_nullCheck_trap(JavaThread* thread, Method *method, int trap_bci) 513 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_null_check, method, trap_bci); } 514 void InterpreterRuntime::note_div0Check_trap(JavaThread* thread, Method *method, int trap_bci) 515 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_div0_check, method, trap_bci); } 516 void InterpreterRuntime::note_rangeCheck_trap(JavaThread* thread, Method *method, int trap_bci) 517 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_range_check, method, trap_bci); } 518 void InterpreterRuntime::note_classCheck_trap(JavaThread* thread, Method *method, int trap_bci) 519 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_class_check, method, trap_bci); } 520 void InterpreterRuntime::note_arrayCheck_trap(JavaThread* thread, Method *method, int trap_bci) 521 { if (ProfileTraps) note_trap(thread, Deoptimization::Reason_array_check, method, trap_bci); } 522 #endif // CC_INTERP 523 524 525 static Handle get_preinitialized_exception(Klass* k, TRAPS) { 526 // get klass 527 InstanceKlass* klass = InstanceKlass::cast(k); 528 assert(klass->is_initialized(), 529 "this klass should have been initialized during VM initialization"); 530 // create instance - do not call constructor since we may have no 531 // (java) stack space left (should assert constructor is empty) 532 Handle exception; 533 oop exception_oop = klass->allocate_instance(CHECK_(exception)); 534 exception = Handle(THREAD, exception_oop); 535 if (StackTraceInThrowable) { 536 java_lang_Throwable::fill_in_stack_trace(exception); 537 } 538 return exception; 539 } 540 541 // Special handling for stack overflow: since we don't have any (java) stack 542 // space left we use the pre-allocated & pre-initialized StackOverflowError 543 // klass to create an stack overflow error instance. We do not call its 544 // constructor for the same reason (it is empty, anyway). 545 IRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* thread)) 546 Handle exception = get_preinitialized_exception( 547 SystemDictionary::StackOverflowError_klass(), 548 CHECK); 549 // Increment counter for hs_err file reporting 550 Atomic::inc(&Exceptions::_stack_overflow_errors); 551 THROW_HANDLE(exception); 552 IRT_END 553 554 IRT_ENTRY(void, InterpreterRuntime::throw_delayed_StackOverflowError(JavaThread* thread)) 555 Handle exception = get_preinitialized_exception( 556 SystemDictionary::StackOverflowError_klass(), 557 CHECK); 558 java_lang_Throwable::set_message(exception(), 559 Universe::delayed_stack_overflow_error_message()); 560 // Increment counter for hs_err file reporting 561 Atomic::inc(&Exceptions::_stack_overflow_errors); 562 THROW_HANDLE(exception); 563 IRT_END 564 565 IRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* thread, char* name, char* message)) 566 // lookup exception klass 567 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); 568 if (ProfileTraps) { 569 if (s == vmSymbols::java_lang_ArithmeticException()) { 570 note_trap(thread, Deoptimization::Reason_div0_check, CHECK); 571 } else if (s == vmSymbols::java_lang_NullPointerException()) { 572 note_trap(thread, Deoptimization::Reason_null_check, CHECK); 573 } 574 } 575 // create exception 576 Handle exception = Exceptions::new_exception(thread, s, message); 577 thread->set_vm_result(exception()); 578 IRT_END 579 580 581 IRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* thread, char* name, oopDesc* obj)) 582 ResourceMark rm(thread); 583 const char* klass_name = obj->klass()->external_name(); 584 // lookup exception klass 585 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); 586 if (ProfileTraps) { 587 note_trap(thread, Deoptimization::Reason_class_check, CHECK); 588 } 589 // create exception, with klass name as detail message 590 Handle exception = Exceptions::new_exception(thread, s, klass_name); 591 thread->set_vm_result(exception()); 592 IRT_END 593 594 595 IRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* thread, char* name, jint index)) 596 char message[jintAsStringSize]; 597 // lookup exception klass 598 TempNewSymbol s = SymbolTable::new_symbol(name, CHECK); 599 if (ProfileTraps) { 600 note_trap(thread, Deoptimization::Reason_range_check, CHECK); 601 } 602 // create exception 603 sprintf(message, "%d", index); 604 THROW_MSG(s, message); 605 IRT_END 606 607 IRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException( 608 JavaThread* thread, oopDesc* obj)) 609 610 ResourceMark rm(thread); 611 char* message = SharedRuntime::generate_class_cast_message( 612 thread, obj->klass()); 613 614 if (ProfileTraps) { 615 note_trap(thread, Deoptimization::Reason_class_check, CHECK); 616 } 617 618 // create exception 619 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message); 620 IRT_END 621 622 // exception_handler_for_exception(...) returns the continuation address, 623 // the exception oop (via TLS) and sets the bci/bcp for the continuation. 624 // The exception oop is returned to make sure it is preserved over GC (it 625 // is only on the stack if the exception was thrown explicitly via athrow). 626 // During this operation, the expression stack contains the values for the 627 // bci where the exception happened. If the exception was propagated back 628 // from a call, the expression stack contains the values for the bci at the 629 // invoke w/o arguments (i.e., as if one were inside the call). 630 IRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* thread, oopDesc* exception)) 631 632 Handle h_exception(thread, exception); 633 methodHandle h_method (thread, method(thread)); 634 constantPoolHandle h_constants(thread, h_method->constants()); 635 bool should_repeat; 636 int handler_bci; 637 int current_bci = bci(thread); 638 639 if (thread->frames_to_pop_failed_realloc() > 0) { 640 // Allocation of scalar replaced object used in this frame 641 // failed. Unconditionally pop the frame. 642 thread->dec_frames_to_pop_failed_realloc(); 643 thread->set_vm_result(h_exception()); 644 // If the method is synchronized we already unlocked the monitor 645 // during deoptimization so the interpreter needs to skip it when 646 // the frame is popped. 647 thread->set_do_not_unlock_if_synchronized(true); 648 #ifdef CC_INTERP 649 return (address) -1; 650 #else 651 return Interpreter::remove_activation_entry(); 652 #endif 653 } 654 655 // Need to do this check first since when _do_not_unlock_if_synchronized 656 // is set, we don't want to trigger any classloading which may make calls 657 // into java, or surprisingly find a matching exception handler for bci 0 658 // since at this moment the method hasn't been "officially" entered yet. 659 if (thread->do_not_unlock_if_synchronized()) { 660 ResourceMark rm; 661 assert(current_bci == 0, "bci isn't zero for do_not_unlock_if_synchronized"); 662 thread->set_vm_result(exception); 663 #ifdef CC_INTERP 664 return (address) -1; 665 #else 666 return Interpreter::remove_activation_entry(); 667 #endif 668 } 669 670 do { 671 should_repeat = false; 672 673 // assertions 674 #ifdef ASSERT 675 assert(h_exception.not_null(), "NULL exceptions should be handled by athrow"); 676 assert(h_exception->is_oop(), "just checking"); 677 // Check that exception is a subclass of Throwable, otherwise we have a VerifyError 678 if (!(h_exception->is_a(SystemDictionary::Throwable_klass()))) { 679 if (ExitVMOnVerifyError) vm_exit(-1); 680 ShouldNotReachHere(); 681 } 682 #endif 683 684 // tracing 685 if (log_is_enabled(Info, exceptions)) { 686 ResourceMark rm(thread); 687 stringStream tempst; 688 tempst.print("interpreter method <%s>\n" 689 " at bci %d for thread " INTPTR_FORMAT, 690 h_method->print_value_string(), current_bci, p2i(thread)); 691 Exceptions::log_exception(h_exception, tempst); 692 } 693 // Don't go paging in something which won't be used. 694 // else if (extable->length() == 0) { 695 // // disabled for now - interpreter is not using shortcut yet 696 // // (shortcut is not to call runtime if we have no exception handlers) 697 // // warning("performance bug: should not call runtime if method has no exception handlers"); 698 // } 699 // for AbortVMOnException flag 700 Exceptions::debug_check_abort(h_exception); 701 702 // exception handler lookup 703 Klass* klass = h_exception->klass(); 704 handler_bci = Method::fast_exception_handler_bci_for(h_method, klass, current_bci, THREAD); 705 if (HAS_PENDING_EXCEPTION) { 706 // We threw an exception while trying to find the exception handler. 707 // Transfer the new exception to the exception handle which will 708 // be set into thread local storage, and do another lookup for an 709 // exception handler for this exception, this time starting at the 710 // BCI of the exception handler which caused the exception to be 711 // thrown (bug 4307310). 712 h_exception = Handle(THREAD, PENDING_EXCEPTION); 713 CLEAR_PENDING_EXCEPTION; 714 if (handler_bci >= 0) { 715 current_bci = handler_bci; 716 should_repeat = true; 717 } 718 } 719 } while (should_repeat == true); 720 721 #if INCLUDE_JVMCI 722 if (EnableJVMCI && h_method->method_data() != NULL) { 723 ResourceMark rm(thread); 724 ProfileData* pdata = h_method->method_data()->allocate_bci_to_data(current_bci, NULL); 725 if (pdata != NULL && pdata->is_BitData()) { 726 BitData* bit_data = (BitData*) pdata; 727 bit_data->set_exception_seen(); 728 } 729 } 730 #endif 731 732 // notify JVMTI of an exception throw; JVMTI will detect if this is a first 733 // time throw or a stack unwinding throw and accordingly notify the debugger 734 if (JvmtiExport::can_post_on_exceptions()) { 735 JvmtiExport::post_exception_throw(thread, h_method(), bcp(thread), h_exception()); 736 } 737 738 #ifdef CC_INTERP 739 address continuation = (address)(intptr_t) handler_bci; 740 #else 741 address continuation = NULL; 742 #endif 743 address handler_pc = NULL; 744 if (handler_bci < 0 || !thread->reguard_stack((address) &continuation)) { 745 // Forward exception to callee (leaving bci/bcp untouched) because (a) no 746 // handler in this method, or (b) after a stack overflow there is not yet 747 // enough stack space available to reprotect the stack. 748 #ifndef CC_INTERP 749 continuation = Interpreter::remove_activation_entry(); 750 #endif 751 #if COMPILER2_OR_JVMCI 752 // Count this for compilation purposes 753 h_method->interpreter_throwout_increment(THREAD); 754 #endif 755 } else { 756 // handler in this method => change bci/bcp to handler bci/bcp and continue there 757 handler_pc = h_method->code_base() + handler_bci; 758 #ifndef CC_INTERP 759 set_bcp_and_mdp(handler_pc, thread); 760 continuation = Interpreter::dispatch_table(vtos)[*handler_pc]; 761 #endif 762 } 763 // notify debugger of an exception catch 764 // (this is good for exceptions caught in native methods as well) 765 if (JvmtiExport::can_post_on_exceptions()) { 766 JvmtiExport::notice_unwind_due_to_exception(thread, h_method(), handler_pc, h_exception(), (handler_pc != NULL)); 767 } 768 769 thread->set_vm_result(h_exception()); 770 return continuation; 771 IRT_END 772 773 774 IRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* thread)) 775 assert(thread->has_pending_exception(), "must only ne called if there's an exception pending"); 776 // nothing to do - eventually we should remove this code entirely (see comments @ call sites) 777 IRT_END 778 779 780 IRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* thread)) 781 THROW(vmSymbols::java_lang_AbstractMethodError()); 782 IRT_END 783 784 785 IRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* thread)) 786 THROW(vmSymbols::java_lang_IncompatibleClassChangeError()); 787 IRT_END 788 789 790 //------------------------------------------------------------------------------------------------------------------------ 791 // Fields 792 // 793 794 void InterpreterRuntime::resolve_get_put(JavaThread* thread, Bytecodes::Code bytecode) { 795 Thread* THREAD = thread; 796 // resolve field 797 fieldDescriptor info; 798 constantPoolHandle pool(thread, method(thread)->constants()); 799 methodHandle m(thread, method(thread)); 800 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_nofast_putfield || 801 bytecode == Bytecodes::_putstatic || bytecode == Bytecodes::_vwithfield); 802 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic); 803 bool is_value = (bytecode == Bytecodes::_vgetfield || bytecode == Bytecodes::_vwithfield); 804 805 { 806 JvmtiHideSingleStepping jhss(thread); 807 LinkResolver::resolve_field_access(info, pool, get_index_u2_cpcache(thread, bytecode), 808 m, bytecode, CHECK); 809 } // end JvmtiHideSingleStepping 810 811 // check if link resolution caused cpCache to be updated 812 ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread); 813 if (cp_cache_entry->is_resolved(bytecode)) return; 814 815 // compute auxiliary field attributes 816 TosState state = as_TosState(info.field_type()); 817 818 // Resolution of put instructions on final fields is delayed. That is required so that 819 // exceptions are thrown at the correct place (when the instruction is actually invoked). 820 // If we do not resolve an instruction in the current pass, leaving the put_code 821 // set to zero will cause the next put instruction to the same field to reresolve. 822 823 // Resolution of put instructions to final instance fields with invalid updates (i.e., 824 // to final instance fields with updates originating from a method different than <init>) 825 // is inhibited. A putfield instruction targeting an instance final field must throw 826 // an IllegalAccessError if the instruction is not in an instance 827 // initializer method <init>. If resolution were not inhibited, a putfield 828 // in an initializer method could be resolved in the initializer. Subsequent 829 // putfield instructions to the same field would then use cached information. 830 // As a result, those instructions would not pass through the VM. That is, 831 // checks in resolve_field_access() would not be executed for those instructions 832 // and the required IllegalAccessError would not be thrown. 833 // 834 // Also, we need to delay resolving getstatic and putstatic instructions until the 835 // class is initialized. This is required so that access to the static 836 // field will call the initialization function every time until the class 837 // is completely initialized ala. in 2.17.5 in JVM Specification. 838 InstanceKlass* klass = InstanceKlass::cast(info.field_holder()); 839 bool uninitialized_static = is_static && !klass->is_initialized(); 840 bool has_initialized_final_update = info.field_holder()->major_version() >= 53 && 841 info.has_initialized_final_update(); 842 assert(!(has_initialized_final_update && !info.access_flags().is_final()), "Fields with initialized final updates must be final"); 843 844 Bytecodes::Code get_code = (Bytecodes::Code)0; 845 Bytecodes::Code put_code = (Bytecodes::Code)0; 846 if (!uninitialized_static) { 847 if (is_static) { 848 get_code = Bytecodes::_getstatic; 849 } else { 850 get_code = ((is_value) ? Bytecodes::_vgetfield : Bytecodes::_getfield); 851 } 852 if (is_put && is_value) { 853 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_vwithfield); 854 } else if ((is_put && !has_initialized_final_update) || !info.access_flags().is_final()) { 855 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield); 856 } 857 } 858 859 cp_cache_entry->set_field( 860 get_code, 861 put_code, 862 info.field_holder(), 863 info.index(), 864 info.offset(), 865 state, 866 info.access_flags().is_final(), 867 info.access_flags().is_volatile(), 868 pool->pool_holder() 869 ); 870 } 871 872 873 //------------------------------------------------------------------------------------------------------------------------ 874 // Synchronization 875 // 876 // The interpreter's synchronization code is factored out so that it can 877 // be shared by method invocation and synchronized blocks. 878 //%note synchronization_3 879 880 //%note monitor_1 881 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* thread, BasicObjectLock* elem)) 882 #ifdef ASSERT 883 thread->last_frame().interpreter_frame_verify_monitor(elem); 884 #endif 885 if (PrintBiasedLockingStatistics) { 886 Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); 887 } 888 Handle h_obj(thread, elem->obj()); 889 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), 890 "must be NULL or an object"); 891 if (UseBiasedLocking) { 892 // Retry fast entry if bias is revoked to avoid unnecessary inflation 893 ObjectSynchronizer::fast_enter(h_obj, elem->lock(), true, CHECK); 894 } else { 895 ObjectSynchronizer::slow_enter(h_obj, elem->lock(), CHECK); 896 } 897 assert(Universe::heap()->is_in_reserved_or_null(elem->obj()), 898 "must be NULL or an object"); 899 #ifdef ASSERT 900 thread->last_frame().interpreter_frame_verify_monitor(elem); 901 #endif 902 IRT_END 903 904 905 //%note monitor_1 906 IRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorexit(JavaThread* thread, BasicObjectLock* elem)) 907 #ifdef ASSERT 908 thread->last_frame().interpreter_frame_verify_monitor(elem); 909 #endif 910 Handle h_obj(thread, elem->obj()); 911 assert(Universe::heap()->is_in_reserved_or_null(h_obj()), 912 "must be NULL or an object"); 913 if (elem == NULL || h_obj()->is_unlocked()) { 914 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); 915 } 916 ObjectSynchronizer::slow_exit(h_obj(), elem->lock(), thread); 917 // Free entry. This must be done here, since a pending exception might be installed on 918 // exit. If it is not cleared, the exception handling code will try to unlock the monitor again. 919 elem->set_obj(NULL); 920 #ifdef ASSERT 921 thread->last_frame().interpreter_frame_verify_monitor(elem); 922 #endif 923 IRT_END 924 925 926 IRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* thread)) 927 THROW(vmSymbols::java_lang_IllegalMonitorStateException()); 928 IRT_END 929 930 931 IRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* thread)) 932 // Returns an illegal exception to install into the current thread. The 933 // pending_exception flag is cleared so normal exception handling does not 934 // trigger. Any current installed exception will be overwritten. This 935 // method will be called during an exception unwind. 936 937 assert(!HAS_PENDING_EXCEPTION, "no pending exception"); 938 Handle exception(thread, thread->vm_result()); 939 assert(exception() != NULL, "vm result should be set"); 940 thread->set_vm_result(NULL); // clear vm result before continuing (may cause memory leaks and assert failures) 941 if (!exception->is_a(SystemDictionary::ThreadDeath_klass())) { 942 exception = get_preinitialized_exception( 943 SystemDictionary::IllegalMonitorStateException_klass(), 944 CATCH); 945 } 946 thread->set_vm_result(exception()); 947 IRT_END 948 949 950 //------------------------------------------------------------------------------------------------------------------------ 951 // Invokes 952 953 IRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* thread, Method* method, address bcp)) 954 return method->orig_bytecode_at(method->bci_from(bcp)); 955 IRT_END 956 957 IRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* thread, Method* method, address bcp, Bytecodes::Code new_code)) 958 method->set_orig_bytecode_at(method->bci_from(bcp), new_code); 959 IRT_END 960 961 IRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* thread, Method* method, address bcp)) 962 JvmtiExport::post_raw_breakpoint(thread, method, bcp); 963 IRT_END 964 965 void InterpreterRuntime::resolve_invoke(JavaThread* thread, Bytecodes::Code bytecode) { 966 Thread* THREAD = thread; 967 // extract receiver from the outgoing argument list if necessary 968 Handle receiver(thread, NULL); 969 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface || 970 bytecode == Bytecodes::_invokespecial) { 971 ResourceMark rm(thread); 972 methodHandle m (thread, method(thread)); 973 Bytecode_invoke call(m, bci(thread)); 974 Symbol* signature = call.signature(); 975 receiver = Handle(thread, 976 thread->last_frame().interpreter_callee_receiver(signature)); 977 assert(Universe::heap()->is_in_reserved_or_null(receiver()), 978 "sanity check"); 979 assert(receiver.is_null() || 980 !Universe::heap()->is_in_reserved(receiver->klass()), 981 "sanity check"); 982 } 983 984 // resolve method 985 CallInfo info; 986 constantPoolHandle pool(thread, method(thread)->constants()); 987 988 { 989 JvmtiHideSingleStepping jhss(thread); 990 LinkResolver::resolve_invoke(info, receiver, pool, 991 get_index_u2_cpcache(thread, bytecode), bytecode, 992 CHECK); 993 if (JvmtiExport::can_hotswap_or_post_breakpoint()) { 994 int retry_count = 0; 995 while (info.resolved_method()->is_old()) { 996 // It is very unlikely that method is redefined more than 100 times 997 // in the middle of resolve. If it is looping here more than 100 times 998 // means then there could be a bug here. 999 guarantee((retry_count++ < 100), 1000 "Could not resolve to latest version of redefined method"); 1001 // method is redefined in the middle of resolve so re-try. 1002 LinkResolver::resolve_invoke(info, receiver, pool, 1003 get_index_u2_cpcache(thread, bytecode), bytecode, 1004 CHECK); 1005 } 1006 } 1007 } // end JvmtiHideSingleStepping 1008 1009 // check if link resolution caused cpCache to be updated 1010 ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread); 1011 if (cp_cache_entry->is_resolved(bytecode)) return; 1012 1013 #ifdef ASSERT 1014 if (bytecode == Bytecodes::_invokeinterface) { 1015 if (info.resolved_method()->method_holder() == 1016 SystemDictionary::Object_klass()) { 1017 // NOTE: THIS IS A FIX FOR A CORNER CASE in the JVM spec 1018 // (see also CallInfo::set_interface for details) 1019 assert(info.call_kind() == CallInfo::vtable_call || 1020 info.call_kind() == CallInfo::direct_call, ""); 1021 methodHandle rm = info.resolved_method(); 1022 assert(rm->is_final() || info.has_vtable_index(), 1023 "should have been set already"); 1024 } else if (!info.resolved_method()->has_itable_index()) { 1025 // Resolved something like CharSequence.toString. Use vtable not itable. 1026 assert(info.call_kind() != CallInfo::itable_call, ""); 1027 } else { 1028 // Setup itable entry 1029 assert(info.call_kind() == CallInfo::itable_call, ""); 1030 int index = info.resolved_method()->itable_index(); 1031 assert(info.itable_index() == index, ""); 1032 } 1033 } else if (bytecode == Bytecodes::_invokespecial) { 1034 assert(info.call_kind() == CallInfo::direct_call, "must be direct call"); 1035 } else { 1036 assert(info.call_kind() == CallInfo::direct_call || 1037 info.call_kind() == CallInfo::vtable_call, ""); 1038 } 1039 #endif 1040 // Get sender or sender's host_klass, and only set cpCache entry to resolved if 1041 // it is not an interface. The receiver for invokespecial calls within interface 1042 // methods must be checked for every call. 1043 InstanceKlass* sender = pool->pool_holder(); 1044 sender = sender->is_anonymous() ? sender->host_klass() : sender; 1045 1046 switch (info.call_kind()) { 1047 case CallInfo::direct_call: 1048 cp_cache_entry->set_direct_call( 1049 bytecode, 1050 info.resolved_method(), 1051 sender->is_interface()); 1052 break; 1053 case CallInfo::vtable_call: 1054 cp_cache_entry->set_vtable_call( 1055 bytecode, 1056 info.resolved_method(), 1057 info.vtable_index()); 1058 break; 1059 case CallInfo::itable_call: 1060 cp_cache_entry->set_itable_call( 1061 bytecode, 1062 info.resolved_method(), 1063 info.itable_index()); 1064 break; 1065 default: ShouldNotReachHere(); 1066 } 1067 } 1068 1069 1070 // First time execution: Resolve symbols, create a permanent MethodType object. 1071 void InterpreterRuntime::resolve_invokehandle(JavaThread* thread) { 1072 Thread* THREAD = thread; 1073 const Bytecodes::Code bytecode = Bytecodes::_invokehandle; 1074 1075 // resolve method 1076 CallInfo info; 1077 constantPoolHandle pool(thread, method(thread)->constants()); 1078 { 1079 JvmtiHideSingleStepping jhss(thread); 1080 LinkResolver::resolve_invoke(info, Handle(), pool, 1081 get_index_u2_cpcache(thread, bytecode), bytecode, 1082 CHECK); 1083 } // end JvmtiHideSingleStepping 1084 1085 ConstantPoolCacheEntry* cp_cache_entry = cache_entry(thread); 1086 cp_cache_entry->set_method_handle(pool, info); 1087 } 1088 1089 // First time execution: Resolve symbols, create a permanent CallSite object. 1090 void InterpreterRuntime::resolve_invokedynamic(JavaThread* thread) { 1091 Thread* THREAD = thread; 1092 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic; 1093 1094 //TO DO: consider passing BCI to Java. 1095 // int caller_bci = method(thread)->bci_from(bcp(thread)); 1096 1097 // resolve method 1098 CallInfo info; 1099 constantPoolHandle pool(thread, method(thread)->constants()); 1100 int index = get_index_u4(thread, bytecode); 1101 { 1102 JvmtiHideSingleStepping jhss(thread); 1103 LinkResolver::resolve_invoke(info, Handle(), pool, 1104 index, bytecode, CHECK); 1105 } // end JvmtiHideSingleStepping 1106 1107 ConstantPoolCacheEntry* cp_cache_entry = pool->invokedynamic_cp_cache_entry_at(index); 1108 cp_cache_entry->set_dynamic_call(pool, info); 1109 } 1110 1111 // This function is the interface to the assembly code. It returns the resolved 1112 // cpCache entry. This doesn't safepoint, but the helper routines safepoint. 1113 // This function will check for redefinition! 1114 IRT_ENTRY(void, InterpreterRuntime::resolve_from_cache(JavaThread* thread, Bytecodes::Code bytecode)) { 1115 switch (bytecode) { 1116 case Bytecodes::_getstatic: 1117 case Bytecodes::_putstatic: 1118 case Bytecodes::_getfield: 1119 case Bytecodes::_putfield: 1120 case Bytecodes::_vgetfield: 1121 case Bytecodes::_vwithfield: 1122 resolve_get_put(thread, bytecode); 1123 break; 1124 case Bytecodes::_invokevirtual: 1125 case Bytecodes::_invokespecial: 1126 case Bytecodes::_invokestatic: 1127 case Bytecodes::_invokeinterface: 1128 resolve_invoke(thread, bytecode); 1129 break; 1130 case Bytecodes::_invokehandle: 1131 resolve_invokehandle(thread); 1132 break; 1133 case Bytecodes::_invokedynamic: 1134 resolve_invokedynamic(thread); 1135 break; 1136 default: 1137 fatal("unexpected bytecode: %s", Bytecodes::name(bytecode)); 1138 break; 1139 } 1140 } 1141 IRT_END 1142 1143 //------------------------------------------------------------------------------------------------------------------------ 1144 // Miscellaneous 1145 1146 1147 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* thread, address branch_bcp) { 1148 nmethod* nm = frequency_counter_overflow_inner(thread, branch_bcp); 1149 assert(branch_bcp != NULL || nm == NULL, "always returns null for non OSR requests"); 1150 if (branch_bcp != NULL && nm != NULL) { 1151 // This was a successful request for an OSR nmethod. Because 1152 // frequency_counter_overflow_inner ends with a safepoint check, 1153 // nm could have been unloaded so look it up again. It's unsafe 1154 // to examine nm directly since it might have been freed and used 1155 // for something else. 1156 frame fr = thread->last_frame(); 1157 Method* method = fr.interpreter_frame_method(); 1158 int bci = method->bci_from(fr.interpreter_frame_bcp()); 1159 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false); 1160 } 1161 #ifndef PRODUCT 1162 if (TraceOnStackReplacement) { 1163 if (nm != NULL) { 1164 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", p2i(nm->osr_entry())); 1165 nm->print(); 1166 } 1167 } 1168 #endif 1169 return nm; 1170 } 1171 1172 IRT_ENTRY(nmethod*, 1173 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* thread, address branch_bcp)) 1174 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized 1175 // flag, in case this method triggers classloading which will call into Java. 1176 UnlockFlagSaver fs(thread); 1177 1178 frame fr = thread->last_frame(); 1179 assert(fr.is_interpreted_frame(), "must come from interpreter"); 1180 methodHandle method(thread, fr.interpreter_frame_method()); 1181 const int branch_bci = branch_bcp != NULL ? method->bci_from(branch_bcp) : InvocationEntryBci; 1182 const int bci = branch_bcp != NULL ? method->bci_from(fr.interpreter_frame_bcp()) : InvocationEntryBci; 1183 1184 assert(!HAS_PENDING_EXCEPTION, "Should not have any exceptions pending"); 1185 nmethod* osr_nm = CompilationPolicy::policy()->event(method, method, branch_bci, bci, CompLevel_none, NULL, thread); 1186 assert(!HAS_PENDING_EXCEPTION, "Event handler should not throw any exceptions"); 1187 1188 if (osr_nm != NULL) { 1189 // We may need to do on-stack replacement which requires that no 1190 // monitors in the activation are biased because their 1191 // BasicObjectLocks will need to migrate during OSR. Force 1192 // unbiasing of all monitors in the activation now (even though 1193 // the OSR nmethod might be invalidated) because we don't have a 1194 // safepoint opportunity later once the migration begins. 1195 if (UseBiasedLocking) { 1196 ResourceMark rm; 1197 GrowableArray<Handle>* objects_to_revoke = new GrowableArray<Handle>(); 1198 for( BasicObjectLock *kptr = fr.interpreter_frame_monitor_end(); 1199 kptr < fr.interpreter_frame_monitor_begin(); 1200 kptr = fr.next_monitor_in_interpreter_frame(kptr) ) { 1201 if( kptr->obj() != NULL ) { 1202 objects_to_revoke->append(Handle(THREAD, kptr->obj())); 1203 } 1204 } 1205 BiasedLocking::revoke(objects_to_revoke); 1206 } 1207 } 1208 return osr_nm; 1209 IRT_END 1210 1211 IRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp)) 1212 assert(ProfileInterpreter, "must be profiling interpreter"); 1213 int bci = method->bci_from(cur_bcp); 1214 MethodData* mdo = method->method_data(); 1215 if (mdo == NULL) return 0; 1216 return mdo->bci_to_di(bci); 1217 IRT_END 1218 1219 IRT_ENTRY(void, InterpreterRuntime::profile_method(JavaThread* thread)) 1220 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized 1221 // flag, in case this method triggers classloading which will call into Java. 1222 UnlockFlagSaver fs(thread); 1223 1224 assert(ProfileInterpreter, "must be profiling interpreter"); 1225 frame fr = thread->last_frame(); 1226 assert(fr.is_interpreted_frame(), "must come from interpreter"); 1227 methodHandle method(thread, fr.interpreter_frame_method()); 1228 Method::build_interpreter_method_data(method, THREAD); 1229 if (HAS_PENDING_EXCEPTION) { 1230 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); 1231 CLEAR_PENDING_EXCEPTION; 1232 // and fall through... 1233 } 1234 IRT_END 1235 1236 1237 #ifdef ASSERT 1238 IRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp)) 1239 assert(ProfileInterpreter, "must be profiling interpreter"); 1240 1241 MethodData* mdo = method->method_data(); 1242 assert(mdo != NULL, "must not be null"); 1243 1244 int bci = method->bci_from(bcp); 1245 1246 address mdp2 = mdo->bci_to_dp(bci); 1247 if (mdp != mdp2) { 1248 ResourceMark rm; 1249 ResetNoHandleMark rnm; // In a LEAF entry. 1250 HandleMark hm; 1251 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci); 1252 int current_di = mdo->dp_to_di(mdp); 1253 int expected_di = mdo->dp_to_di(mdp2); 1254 tty->print_cr(" actual di %d expected di %d", current_di, expected_di); 1255 int expected_approx_bci = mdo->data_at(expected_di)->bci(); 1256 int approx_bci = -1; 1257 if (current_di >= 0) { 1258 approx_bci = mdo->data_at(current_di)->bci(); 1259 } 1260 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci); 1261 mdo->print_on(tty); 1262 method->print_codes(); 1263 } 1264 assert(mdp == mdp2, "wrong mdp"); 1265 IRT_END 1266 #endif // ASSERT 1267 1268 IRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* thread, int return_bci)) 1269 assert(ProfileInterpreter, "must be profiling interpreter"); 1270 ResourceMark rm(thread); 1271 HandleMark hm(thread); 1272 frame fr = thread->last_frame(); 1273 assert(fr.is_interpreted_frame(), "must come from interpreter"); 1274 MethodData* h_mdo = fr.interpreter_frame_method()->method_data(); 1275 1276 // Grab a lock to ensure atomic access to setting the return bci and 1277 // the displacement. This can block and GC, invalidating all naked oops. 1278 MutexLocker ml(RetData_lock); 1279 1280 // ProfileData is essentially a wrapper around a derived oop, so we 1281 // need to take the lock before making any ProfileData structures. 1282 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(fr.interpreter_frame_mdp())); 1283 RetData* rdata = data->as_RetData(); 1284 address new_mdp = rdata->fixup_ret(return_bci, h_mdo); 1285 fr.interpreter_frame_set_mdp(new_mdp); 1286 IRT_END 1287 1288 IRT_ENTRY(MethodCounters*, InterpreterRuntime::build_method_counters(JavaThread* thread, Method* m)) 1289 MethodCounters* mcs = Method::build_method_counters(m, thread); 1290 if (HAS_PENDING_EXCEPTION) { 1291 assert((PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())), "we expect only an OOM error here"); 1292 CLEAR_PENDING_EXCEPTION; 1293 } 1294 return mcs; 1295 IRT_END 1296 1297 1298 IRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* thread)) 1299 // We used to need an explict preserve_arguments here for invoke bytecodes. However, 1300 // stack traversal automatically takes care of preserving arguments for invoke, so 1301 // this is no longer needed. 1302 1303 // IRT_END does an implicit safepoint check, hence we are guaranteed to block 1304 // if this is called during a safepoint 1305 1306 if (JvmtiExport::should_post_single_step()) { 1307 // We are called during regular safepoints and when the VM is 1308 // single stepping. If any thread is marked for single stepping, 1309 // then we may have JVMTI work to do. 1310 JvmtiExport::at_single_stepping_point(thread, method(thread), bcp(thread)); 1311 } 1312 IRT_END 1313 1314 IRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread *thread, oopDesc* obj, 1315 ConstantPoolCacheEntry *cp_entry)) 1316 1317 // check the access_flags for the field in the klass 1318 1319 InstanceKlass* ik = InstanceKlass::cast(cp_entry->f1_as_klass()); 1320 int index = cp_entry->field_index(); 1321 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_ACCESS_WATCHED) == 0) return; 1322 1323 bool is_static = (obj == NULL); 1324 HandleMark hm(thread); 1325 1326 Handle h_obj; 1327 if (!is_static) { 1328 // non-static field accessors have an object, but we need a handle 1329 h_obj = Handle(thread, obj); 1330 } 1331 InstanceKlass* cp_entry_f1 = InstanceKlass::cast(cp_entry->f1_as_klass()); 1332 jfieldID fid = jfieldIDWorkaround::to_jfieldID(cp_entry_f1, cp_entry->f2_as_index(), is_static); 1333 JvmtiExport::post_field_access(thread, method(thread), bcp(thread), cp_entry_f1, h_obj, fid); 1334 IRT_END 1335 1336 IRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread *thread, 1337 oopDesc* obj, ConstantPoolCacheEntry *cp_entry, jvalue *value)) 1338 1339 Klass* k = cp_entry->f1_as_klass(); 1340 1341 // check the access_flags for the field in the klass 1342 InstanceKlass* ik = InstanceKlass::cast(k); 1343 int index = cp_entry->field_index(); 1344 // bail out if field modifications are not watched 1345 if ((ik->field_access_flags(index) & JVM_ACC_FIELD_MODIFICATION_WATCHED) == 0) return; 1346 1347 char sig_type = '\0'; 1348 1349 switch(cp_entry->flag_state()) { 1350 case btos: sig_type = 'B'; break; 1351 case ztos: sig_type = 'Z'; break; 1352 case ctos: sig_type = 'C'; break; 1353 case stos: sig_type = 'S'; break; 1354 case itos: sig_type = 'I'; break; 1355 case ftos: sig_type = 'F'; break; 1356 case atos: sig_type = 'L'; break; 1357 case ltos: sig_type = 'J'; break; 1358 case dtos: sig_type = 'D'; break; 1359 default: ShouldNotReachHere(); return; 1360 } 1361 bool is_static = (obj == NULL); 1362 1363 HandleMark hm(thread); 1364 jfieldID fid = jfieldIDWorkaround::to_jfieldID(ik, cp_entry->f2_as_index(), is_static); 1365 jvalue fvalue; 1366 #ifdef _LP64 1367 fvalue = *value; 1368 #else 1369 // Long/double values are stored unaligned and also noncontiguously with 1370 // tagged stacks. We can't just do a simple assignment even in the non- 1371 // J/D cases because a C++ compiler is allowed to assume that a jvalue is 1372 // 8-byte aligned, and interpreter stack slots are only 4-byte aligned. 1373 // We assume that the two halves of longs/doubles are stored in interpreter 1374 // stack slots in platform-endian order. 1375 jlong_accessor u; 1376 jint* newval = (jint*)value; 1377 u.words[0] = newval[0]; 1378 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag 1379 fvalue.j = u.long_value; 1380 #endif // _LP64 1381 1382 Handle h_obj; 1383 if (!is_static) { 1384 // non-static field accessors have an object, but we need a handle 1385 h_obj = Handle(thread, obj); 1386 } 1387 1388 JvmtiExport::post_raw_field_modification(thread, method(thread), bcp(thread), ik, h_obj, 1389 fid, sig_type, &fvalue); 1390 IRT_END 1391 1392 IRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread *thread)) 1393 JvmtiExport::post_method_entry(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); 1394 IRT_END 1395 1396 1397 IRT_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread *thread)) 1398 JvmtiExport::post_method_exit(thread, InterpreterRuntime::method(thread), InterpreterRuntime::last_frame(thread)); 1399 IRT_END 1400 1401 IRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc)) 1402 { 1403 return (Interpreter::contains(pc) ? 1 : 0); 1404 } 1405 IRT_END 1406 1407 1408 // Implementation of SignatureHandlerLibrary 1409 1410 #ifndef SHARING_FAST_NATIVE_FINGERPRINTS 1411 // Dummy definition (else normalization method is defined in CPU 1412 // dependant code) 1413 uint64_t InterpreterRuntime::normalize_fast_native_fingerprint(uint64_t fingerprint) { 1414 return fingerprint; 1415 } 1416 #endif 1417 1418 address SignatureHandlerLibrary::set_handler_blob() { 1419 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size); 1420 if (handler_blob == NULL) { 1421 return NULL; 1422 } 1423 address handler = handler_blob->code_begin(); 1424 _handler_blob = handler_blob; 1425 _handler = handler; 1426 return handler; 1427 } 1428 1429 void SignatureHandlerLibrary::initialize() { 1430 if (_fingerprints != NULL) { 1431 return; 1432 } 1433 if (set_handler_blob() == NULL) { 1434 vm_exit_out_of_memory(blob_size, OOM_MALLOC_ERROR, "native signature handlers"); 1435 } 1436 1437 BufferBlob* bb = BufferBlob::create("Signature Handler Temp Buffer", 1438 SignatureHandlerLibrary::buffer_size); 1439 _buffer = bb->code_begin(); 1440 1441 _fingerprints = new(ResourceObj::C_HEAP, mtCode)GrowableArray<uint64_t>(32, true); 1442 _handlers = new(ResourceObj::C_HEAP, mtCode)GrowableArray<address>(32, true); 1443 } 1444 1445 address SignatureHandlerLibrary::set_handler(CodeBuffer* buffer) { 1446 address handler = _handler; 1447 int insts_size = buffer->pure_insts_size(); 1448 if (handler + insts_size > _handler_blob->code_end()) { 1449 // get a new handler blob 1450 handler = set_handler_blob(); 1451 } 1452 if (handler != NULL) { 1453 memcpy(handler, buffer->insts_begin(), insts_size); 1454 pd_set_handler(handler); 1455 ICache::invalidate_range(handler, insts_size); 1456 _handler = handler + insts_size; 1457 } 1458 return handler; 1459 } 1460 1461 void SignatureHandlerLibrary::add(const methodHandle& method) { 1462 if (method->signature_handler() == NULL) { 1463 // use slow signature handler if we can't do better 1464 int handler_index = -1; 1465 // check if we can use customized (fast) signature handler 1466 if (UseFastSignatureHandlers && method->size_of_parameters() <= Fingerprinter::max_size_of_parameters) { 1467 // use customized signature handler 1468 MutexLocker mu(SignatureHandlerLibrary_lock); 1469 // make sure data structure is initialized 1470 initialize(); 1471 // lookup method signature's fingerprint 1472 uint64_t fingerprint = Fingerprinter(method).fingerprint(); 1473 // allow CPU dependant code to optimize the fingerprints for the fast handler 1474 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint); 1475 handler_index = _fingerprints->find(fingerprint); 1476 // create handler if necessary 1477 if (handler_index < 0) { 1478 ResourceMark rm; 1479 ptrdiff_t align_offset = (address) 1480 round_to((intptr_t)_buffer, CodeEntryAlignment) - (address)_buffer; 1481 CodeBuffer buffer((address)(_buffer + align_offset), 1482 SignatureHandlerLibrary::buffer_size - align_offset); 1483 InterpreterRuntime::SignatureHandlerGenerator(method, &buffer).generate(fingerprint); 1484 // copy into code heap 1485 address handler = set_handler(&buffer); 1486 if (handler == NULL) { 1487 // use slow signature handler (without memorizing it in the fingerprints) 1488 } else { 1489 // debugging suppport 1490 if (PrintSignatureHandlers && (handler != Interpreter::slow_signature_handler())) { 1491 ttyLocker ttyl; 1492 tty->cr(); 1493 tty->print_cr("argument handler #%d for: %s %s (fingerprint = " UINT64_FORMAT ", %d bytes generated)", 1494 _handlers->length(), 1495 (method->is_static() ? "static" : "receiver"), 1496 method->name_and_sig_as_C_string(), 1497 fingerprint, 1498 buffer.insts_size()); 1499 if (buffer.insts_size() > 0) { 1500 Disassembler::decode(handler, handler + buffer.insts_size()); 1501 } 1502 #ifndef PRODUCT 1503 address rh_begin = Interpreter::result_handler(method()->result_type()); 1504 if (CodeCache::contains(rh_begin)) { 1505 // else it might be special platform dependent values 1506 tty->print_cr(" --- associated result handler ---"); 1507 address rh_end = rh_begin; 1508 while (*(int*)rh_end != 0) { 1509 rh_end += sizeof(int); 1510 } 1511 Disassembler::decode(rh_begin, rh_end); 1512 } else { 1513 tty->print_cr(" associated result handler: " PTR_FORMAT, p2i(rh_begin)); 1514 } 1515 #endif 1516 } 1517 // add handler to library 1518 _fingerprints->append(fingerprint); 1519 _handlers->append(handler); 1520 // set handler index 1521 assert(_fingerprints->length() == _handlers->length(), "sanity check"); 1522 handler_index = _fingerprints->length() - 1; 1523 } 1524 } 1525 // Set handler under SignatureHandlerLibrary_lock 1526 if (handler_index < 0) { 1527 // use generic signature handler 1528 method->set_signature_handler(Interpreter::slow_signature_handler()); 1529 } else { 1530 // set handler 1531 method->set_signature_handler(_handlers->at(handler_index)); 1532 } 1533 } else { 1534 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); 1535 // use generic signature handler 1536 method->set_signature_handler(Interpreter::slow_signature_handler()); 1537 } 1538 } 1539 #ifdef ASSERT 1540 int handler_index = -1; 1541 int fingerprint_index = -2; 1542 { 1543 // '_handlers' and '_fingerprints' are 'GrowableArray's and are NOT synchronized 1544 // in any way if accessed from multiple threads. To avoid races with another 1545 // thread which may change the arrays in the above, mutex protected block, we 1546 // have to protect this read access here with the same mutex as well! 1547 MutexLocker mu(SignatureHandlerLibrary_lock); 1548 if (_handlers != NULL) { 1549 handler_index = _handlers->find(method->signature_handler()); 1550 uint64_t fingerprint = Fingerprinter(method).fingerprint(); 1551 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint); 1552 fingerprint_index = _fingerprints->find(fingerprint); 1553 } 1554 } 1555 assert(method->signature_handler() == Interpreter::slow_signature_handler() || 1556 handler_index == fingerprint_index, "sanity check"); 1557 #endif // ASSERT 1558 } 1559 1560 void SignatureHandlerLibrary::add(uint64_t fingerprint, address handler) { 1561 int handler_index = -1; 1562 // use customized signature handler 1563 MutexLocker mu(SignatureHandlerLibrary_lock); 1564 // make sure data structure is initialized 1565 initialize(); 1566 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint); 1567 handler_index = _fingerprints->find(fingerprint); 1568 // create handler if necessary 1569 if (handler_index < 0) { 1570 if (PrintSignatureHandlers && (handler != Interpreter::slow_signature_handler())) { 1571 tty->cr(); 1572 tty->print_cr("argument handler #%d at " PTR_FORMAT " for fingerprint " UINT64_FORMAT, 1573 _handlers->length(), 1574 p2i(handler), 1575 fingerprint); 1576 } 1577 _fingerprints->append(fingerprint); 1578 _handlers->append(handler); 1579 } else { 1580 if (PrintSignatureHandlers) { 1581 tty->cr(); 1582 tty->print_cr("duplicate argument handler #%d for fingerprint " UINT64_FORMAT "(old: " PTR_FORMAT ", new : " PTR_FORMAT ")", 1583 _handlers->length(), 1584 fingerprint, 1585 p2i(_handlers->at(handler_index)), 1586 p2i(handler)); 1587 } 1588 } 1589 } 1590 1591 1592 BufferBlob* SignatureHandlerLibrary::_handler_blob = NULL; 1593 address SignatureHandlerLibrary::_handler = NULL; 1594 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = NULL; 1595 GrowableArray<address>* SignatureHandlerLibrary::_handlers = NULL; 1596 address SignatureHandlerLibrary::_buffer = NULL; 1597 1598 1599 IRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* thread, Method* method)) 1600 methodHandle m(thread, method); 1601 assert(m->is_native(), "sanity check"); 1602 // lookup native function entry point if it doesn't exist 1603 bool in_base_library; 1604 if (!m->has_native_function()) { 1605 NativeLookup::lookup(m, in_base_library, CHECK); 1606 } 1607 // make sure signature handler is installed 1608 SignatureHandlerLibrary::add(m); 1609 // The interpreter entry point checks the signature handler first, 1610 // before trying to fetch the native entry point and klass mirror. 1611 // We must set the signature handler last, so that multiple processors 1612 // preparing the same method will be sure to see non-null entry & mirror. 1613 IRT_END 1614 1615 #if defined(IA32) || defined(AMD64) || defined(ARM) 1616 IRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* thread, void* src_address, void* dest_address)) 1617 if (src_address == dest_address) { 1618 return; 1619 } 1620 ResetNoHandleMark rnm; // In a LEAF entry. 1621 HandleMark hm; 1622 ResourceMark rm; 1623 frame fr = thread->last_frame(); 1624 assert(fr.is_interpreted_frame(), ""); 1625 jint bci = fr.interpreter_frame_bci(); 1626 methodHandle mh(thread, fr.interpreter_frame_method()); 1627 Bytecode_invoke invoke(mh, bci); 1628 ArgumentSizeComputer asc(invoke.signature()); 1629 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver 1630 Copy::conjoint_jbytes(src_address, dest_address, 1631 size_of_arguments * Interpreter::stackElementSize); 1632 IRT_END 1633 #endif 1634 1635 #if INCLUDE_JVMTI 1636 // This is a support of the JVMTI PopFrame interface. 1637 // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument 1638 // and return it as a vm_result so that it can be reloaded in the list of invokestatic parameters. 1639 // The member_name argument is a saved reference (in local#0) to the member_name. 1640 // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle. 1641 // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated. 1642 IRT_ENTRY(void, InterpreterRuntime::member_name_arg_or_null(JavaThread* thread, address member_name, 1643 Method* method, address bcp)) 1644 Bytecodes::Code code = Bytecodes::code_at(method, bcp); 1645 if (code != Bytecodes::_invokestatic) { 1646 return; 1647 } 1648 ConstantPool* cpool = method->constants(); 1649 int cp_index = Bytes::get_native_u2(bcp + 1) + ConstantPool::CPCACHE_INDEX_TAG; 1650 Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index)); 1651 Symbol* mname = cpool->name_ref_at(cp_index); 1652 1653 if (MethodHandles::has_member_arg(cname, mname)) { 1654 oop member_name_oop = (oop) member_name; 1655 if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) { 1656 // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated. 1657 member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop); 1658 } 1659 thread->set_vm_result(member_name_oop); 1660 } else { 1661 thread->set_vm_result(NULL); 1662 } 1663 IRT_END 1664 #endif // INCLUDE_JVMTI 1665 1666 #ifndef PRODUCT 1667 // This must be a IRT_LEAF function because the interpreter must save registers on x86 to 1668 // call this, which changes rsp and makes the interpreter's expression stack not walkable. 1669 // The generated code still uses call_VM because that will set up the frame pointer for 1670 // bcp and method. 1671 IRT_LEAF(intptr_t, InterpreterRuntime::trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2)) 1672 const frame f = thread->last_frame(); 1673 assert(f.is_interpreted_frame(), "must be an interpreted frame"); 1674 methodHandle mh(thread, f.interpreter_frame_method()); 1675 BytecodeTracer::trace(mh, f.interpreter_frame_bcp(), tos, tos2); 1676 return preserve_this_value; 1677 IRT_END 1678 #endif // !PRODUCT