50 #include "oops/method.inline.hpp"
51 #include "oops/objArrayKlass.hpp"
52 #include "oops/objArrayOop.inline.hpp"
53 #include "oops/oop.inline.hpp"
54 #include "oops/symbol.hpp"
55 #include "prims/jvmtiExport.hpp"
56 #include "prims/methodHandles.hpp"
57 #include "prims/nativeLookup.hpp"
58 #include "runtime/atomic.hpp"
59 #include "runtime/continuation.hpp"
60 #include "runtime/deoptimization.hpp"
61 #include "runtime/fieldDescriptor.inline.hpp"
62 #include "runtime/frame.inline.hpp"
63 #include "runtime/handles.inline.hpp"
64 #include "runtime/icache.hpp"
65 #include "runtime/interfaceSupport.inline.hpp"
66 #include "runtime/java.hpp"
67 #include "runtime/javaCalls.hpp"
68 #include "runtime/jfieldIDWorkaround.hpp"
69 #include "runtime/osThread.hpp"
70 #include "runtime/sharedRuntime.hpp"
71 #include "runtime/stackWatermarkSet.hpp"
72 #include "runtime/stubRoutines.hpp"
73 #include "runtime/synchronizer.inline.hpp"
74 #include "utilities/align.hpp"
75 #include "utilities/checkedCast.hpp"
76 #include "utilities/copy.hpp"
77 #include "utilities/events.hpp"
78 #if INCLUDE_JFR
79 #include "jfr/jfr.inline.hpp"
80 #endif
81
82 // Helper class to access current interpreter state
83 class LastFrameAccessor : public StackObj {
84 frame _last_frame;
85 public:
86 LastFrameAccessor(JavaThread* current) {
87 assert(current == Thread::current(), "sanity");
88 _last_frame = current->last_frame();
89 }
90 bool is_interpreted_frame() const { return _last_frame.is_interpreted_frame(); }
91 Method* method() const { return _last_frame.interpreter_frame_method(); }
92 address bcp() const { return _last_frame.interpreter_frame_bcp(); }
93 int bci() const { return _last_frame.interpreter_frame_bci(); }
104 int get_index_u2(Bytecodes::Code bc) const { return bytecode().get_index_u2(bc); }
105 int get_index_u4(Bytecodes::Code bc) const { return bytecode().get_index_u4(bc); }
106 int number_of_dimensions() const { return bcp()[3]; }
107
108 oop callee_receiver(Symbol* signature) {
109 return _last_frame.interpreter_callee_receiver(signature);
110 }
111 BasicObjectLock* monitor_begin() const {
112 return _last_frame.interpreter_frame_monitor_begin();
113 }
114 BasicObjectLock* monitor_end() const {
115 return _last_frame.interpreter_frame_monitor_end();
116 }
117 BasicObjectLock* next_monitor(BasicObjectLock* current) const {
118 return _last_frame.next_monitor_in_interpreter_frame(current);
119 }
120
121 frame& get_frame() { return _last_frame; }
122 };
123
124 //------------------------------------------------------------------------------------------------------------------------
125 // State accessors
126
127 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread* current) {
128 LastFrameAccessor last_frame(current);
129 last_frame.set_bcp(bcp);
130 if (ProfileInterpreter) {
131 // ProfileTraps uses MDOs independently of ProfileInterpreter.
132 // That is why we must check both ProfileInterpreter and mdo != nullptr.
133 MethodData* mdo = last_frame.method()->method_data();
134 if (mdo != nullptr) {
135 NEEDS_CLEANUP;
136 last_frame.set_mdp(mdo->bci_to_dp(last_frame.bci()));
137 }
138 }
139 }
140
141 //------------------------------------------------------------------------------------------------------------------------
142 // Constants
143
144
145 JRT_ENTRY(void, InterpreterRuntime::ldc(JavaThread* current, bool wide))
146 // access constant pool
147 LastFrameAccessor last_frame(current);
148 ConstantPool* pool = last_frame.method()->constants();
149 int cp_index = wide ? last_frame.get_index_u2(Bytecodes::_ldc_w) : last_frame.get_index_u1(Bytecodes::_ldc);
150 constantTag tag = pool->tag_at(cp_index);
151
152 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call");
153 Klass* klass = pool->klass_at(cp_index, CHECK);
154 oop java_class = klass->java_mirror();
155 current->set_vm_result_oop(java_class);
156 JRT_END
157
158 JRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* current, Bytecodes::Code bytecode)) {
159 assert(bytecode == Bytecodes::_ldc ||
160 bytecode == Bytecodes::_ldc_w ||
161 bytecode == Bytecodes::_ldc2_w ||
162 bytecode == Bytecodes::_fast_aldc ||
163 bytecode == Bytecodes::_fast_aldc_w, "wrong bc");
164 ResourceMark rm(current);
165 const bool is_fast_aldc = (bytecode == Bytecodes::_fast_aldc ||
166 bytecode == Bytecodes::_fast_aldc_w);
167 LastFrameAccessor last_frame(current);
168 methodHandle m (current, last_frame.method());
169 Bytecode_loadconstant ldc(m, last_frame.bci());
170
171 // Double-check the size. (Condy can have any type.)
172 BasicType type = ldc.result_type();
173 switch (type2size[type]) {
174 case 2: guarantee(bytecode == Bytecodes::_ldc2_w, ""); break;
175 case 1: guarantee(bytecode != Bytecodes::_ldc2_w, ""); break;
176 default: ShouldNotReachHere();
177 }
178
194 assert(roop == coop, "expected result for assembly code");
195 }
196 }
197 #endif
198 current->set_vm_result_oop(result);
199 if (!is_fast_aldc) {
200 // Tell the interpreter how to unbox the primitive.
201 guarantee(java_lang_boxing_object::is_instance(result, type), "");
202 int offset = java_lang_boxing_object::value_offset(type);
203 intptr_t flags = ((as_TosState(type) << ConstantPoolCache::tos_state_shift)
204 | (offset & ConstantPoolCache::field_index_mask));
205 current->set_vm_result_metadata((Metadata*)flags);
206 }
207 }
208 JRT_END
209
210
211 //------------------------------------------------------------------------------------------------------------------------
212 // Allocation
213
214 JRT_ENTRY(void, InterpreterRuntime::_new(JavaThread* current, ConstantPool* pool, int index))
215 Klass* k = pool->klass_at(index, CHECK);
216 InstanceKlass* klass = InstanceKlass::cast(k);
217
218 // Make sure we are not instantiating an abstract klass
219 klass->check_valid_for_instantiation(true, CHECK);
220
221 // Make sure klass is initialized
222 klass->initialize(CHECK);
223
224 oop obj = klass->allocate_instance(CHECK);
225 current->set_vm_result_oop(obj);
226 JRT_END
227
228
229 JRT_ENTRY(void, InterpreterRuntime::newarray(JavaThread* current, BasicType type, jint size))
230 oop obj = oopFactory::new_typeArray(type, size, CHECK);
231 current->set_vm_result_oop(obj);
232 JRT_END
233
234
235 JRT_ENTRY(void, InterpreterRuntime::anewarray(JavaThread* current, ConstantPool* pool, int index, jint size))
236 Klass* klass = pool->klass_at(index, CHECK);
237 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);
238 current->set_vm_result_oop(obj);
239 JRT_END
240
241
242 JRT_ENTRY(void, InterpreterRuntime::multianewarray(JavaThread* current, jint* first_size_address))
243 // We may want to pass in more arguments - could make this slightly faster
244 LastFrameAccessor last_frame(current);
245 ConstantPool* constants = last_frame.method()->constants();
246 int i = last_frame.get_index_u2(Bytecodes::_multianewarray);
247 Klass* klass = constants->klass_at(i, CHECK);
248 int nof_dims = last_frame.number_of_dimensions();
249 assert(klass->is_klass(), "not a class");
250 assert(nof_dims >= 1, "multianewarray rank must be nonzero");
251
252 // We must create an array of jints to pass to multi_allocate.
253 ResourceMark rm(current);
254 const int small_dims = 10;
255 jint dim_array[small_dims];
256 jint *dims = &dim_array[0];
257 if (nof_dims > small_dims) {
258 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims);
259 }
260 for (int index = 0; index < nof_dims; index++) {
261 // offset from first_size_address is addressed as local[index]
262 int n = Interpreter::local_offset_in_bytes(index)/jintSize;
263 dims[index] = first_size_address[n];
264 }
265 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK);
266 current->set_vm_result_oop(obj);
267 JRT_END
268
269
270 JRT_ENTRY(void, InterpreterRuntime::register_finalizer(JavaThread* current, oopDesc* obj))
271 assert(oopDesc::is_oop(obj), "must be a valid oop");
272 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
273 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
274 JRT_END
275
276
277 // Quicken instance-of and check-cast bytecodes
278 JRT_ENTRY(void, InterpreterRuntime::quicken_io_cc(JavaThread* current))
279 // Force resolving; quicken the bytecode
280 LastFrameAccessor last_frame(current);
281 int which = last_frame.get_index_u2(Bytecodes::_checkcast);
282 ConstantPool* cpool = last_frame.method()->constants();
283 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded
284 // program we might have seen an unquick'd bytecode in the interpreter but have another
285 // thread quicken the bytecode before we get here.
286 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" );
287 Klass* klass = cpool->klass_at(which, CHECK);
288 current->set_vm_result_metadata(klass);
289 JRT_END
290
291
292 //------------------------------------------------------------------------------------------------------------------------
293 // Exceptions
294
295 void InterpreterRuntime::note_trap_inner(JavaThread* current, int reason,
296 const methodHandle& trap_method, int trap_bci) {
297 if (trap_method.not_null()) {
298 MethodData* trap_mdo = trap_method->method_data();
330 static Handle get_preinitialized_exception(Klass* k, TRAPS) {
331 // get klass
332 InstanceKlass* klass = InstanceKlass::cast(k);
333 assert(klass->is_initialized(),
334 "this klass should have been initialized during VM initialization");
335 // create instance - do not call constructor since we may have no
336 // (java) stack space left (should assert constructor is empty)
337 Handle exception;
338 oop exception_oop = klass->allocate_instance(CHECK_(exception));
339 exception = Handle(THREAD, exception_oop);
340 if (StackTraceInThrowable) {
341 java_lang_Throwable::fill_in_stack_trace(exception);
342 }
343 return exception;
344 }
345
346 // Special handling for stack overflow: since we don't have any (java) stack
347 // space left we use the pre-allocated & pre-initialized StackOverflowError
348 // klass to create an stack overflow error instance. We do not call its
349 // constructor for the same reason (it is empty, anyway).
350 JRT_ENTRY(void, InterpreterRuntime::throw_StackOverflowError(JavaThread* current))
351 Handle exception = get_preinitialized_exception(
352 vmClasses::StackOverflowError_klass(),
353 CHECK);
354 // Increment counter for hs_err file reporting
355 Atomic::inc(&Exceptions::_stack_overflow_errors);
356 // Remove the ScopedValue bindings in case we got a StackOverflowError
357 // while we were trying to manipulate ScopedValue bindings.
358 current->clear_scopedValueBindings();
359 THROW_HANDLE(exception);
360 JRT_END
361
362 JRT_ENTRY(void, InterpreterRuntime::throw_delayed_StackOverflowError(JavaThread* current))
363 Handle exception = get_preinitialized_exception(
364 vmClasses::StackOverflowError_klass(),
365 CHECK);
366 java_lang_Throwable::set_message(exception(),
367 Universe::delayed_stack_overflow_error_message());
368 // Increment counter for hs_err file reporting
369 Atomic::inc(&Exceptions::_stack_overflow_errors);
370 // Remove the ScopedValue bindings in case we got a StackOverflowError
371 // while we were trying to manipulate ScopedValue bindings.
372 current->clear_scopedValueBindings();
373 THROW_HANDLE(exception);
374 JRT_END
375
376 JRT_ENTRY(void, InterpreterRuntime::create_exception(JavaThread* current, char* name, char* message))
377 // lookup exception klass
378 TempNewSymbol s = SymbolTable::new_symbol(name);
379 if (ProfileTraps) {
380 if (s == vmSymbols::java_lang_ArithmeticException()) {
381 note_trap(current, Deoptimization::Reason_div0_check);
382 } else if (s == vmSymbols::java_lang_NullPointerException()) {
383 note_trap(current, Deoptimization::Reason_null_check);
384 }
385 }
386 // create exception
387 Handle exception = Exceptions::new_exception(current, s, message);
388 current->set_vm_result_oop(exception());
389 JRT_END
390
391
392 JRT_ENTRY(void, InterpreterRuntime::create_klass_exception(JavaThread* current, char* name, oopDesc* obj))
393 // Produce the error message first because note_trap can safepoint
394 ResourceMark rm(current);
395 const char* klass_name = obj->klass()->external_name();
396 // lookup exception klass
397 TempNewSymbol s = SymbolTable::new_symbol(name);
398 if (ProfileTraps) {
399 if (s == vmSymbols::java_lang_ArrayStoreException()) {
400 note_trap(current, Deoptimization::Reason_array_check);
401 } else {
402 note_trap(current, Deoptimization::Reason_class_check);
403 }
404 }
405 // create exception, with klass name as detail message
406 Handle exception = Exceptions::new_exception(current, s, klass_name);
407 current->set_vm_result_oop(exception());
408 JRT_END
409
410 JRT_ENTRY(void, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* current, arrayOopDesc* a, jint index))
411 // Produce the error message first because note_trap can safepoint
412 ResourceMark rm(current);
413 stringStream ss;
414 ss.print("Index %d out of bounds for length %d", index, a->length());
415
416 if (ProfileTraps) {
417 note_trap(current, Deoptimization::Reason_range_check);
418 }
419
420 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
421 JRT_END
422
423 JRT_ENTRY(void, InterpreterRuntime::throw_ClassCastException(
424 JavaThread* current, oopDesc* obj))
425
426 // Produce the error message first because note_trap can safepoint
427 ResourceMark rm(current);
428 char* message = SharedRuntime::generate_class_cast_message(
429 current, obj->klass());
430
431 if (ProfileTraps) {
432 note_trap(current, Deoptimization::Reason_class_check);
433 }
434
435 // create exception
436 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
437 JRT_END
438
439 // exception_handler_for_exception(...) returns the continuation address,
440 // the exception oop (via TLS) and sets the bci/bcp for the continuation.
441 // The exception oop is returned to make sure it is preserved over GC (it
442 // is only on the stack if the exception was thrown explicitly via athrow).
443 // During this operation, the expression stack contains the values for the
444 // bci where the exception happened. If the exception was propagated back
445 // from a call, the expression stack contains the values for the bci at the
446 // invoke w/o arguments (i.e., as if one were inside the call).
447 // Note that the implementation of this method assumes it's only called when an exception has actually occured
448 JRT_ENTRY(address, InterpreterRuntime::exception_handler_for_exception(JavaThread* current, oopDesc* exception))
449 // We get here after we have unwound from a callee throwing an exception
450 // into the interpreter. Any deferred stack processing is notified of
451 // the event via the StackWatermarkSet.
452 StackWatermarkSet::after_unwind(current);
453
454 LastFrameAccessor last_frame(current);
455 Handle h_exception(current, exception);
456 methodHandle h_method (current, last_frame.method());
457 constantPoolHandle h_constants(current, h_method->constants());
458 bool should_repeat;
459 int handler_bci;
460 int current_bci = last_frame.bci();
461
462 if (current->frames_to_pop_failed_realloc() > 0) {
463 // Allocation of scalar replaced object used in this frame
464 // failed. Unconditionally pop the frame.
465 current->dec_frames_to_pop_failed_realloc();
466 current->set_vm_result_oop(h_exception());
467 // If the method is synchronized we already unlocked the monitor
468 // during deoptimization so the interpreter needs to skip it when
567 h_method->set_exception_handler_entered(handler_bci); // profiling
568 #ifndef ZERO
569 set_bcp_and_mdp(handler_pc, current);
570 continuation = Interpreter::dispatch_table(vtos)[*handler_pc];
571 #else
572 continuation = (address)(intptr_t) handler_bci;
573 #endif
574 }
575
576 // notify debugger of an exception catch
577 // (this is good for exceptions caught in native methods as well)
578 if (JvmtiExport::can_post_on_exceptions()) {
579 JvmtiExport::notice_unwind_due_to_exception(current, h_method(), handler_pc, h_exception(), (handler_pc != nullptr));
580 }
581
582 current->set_vm_result_oop(h_exception());
583 return continuation;
584 JRT_END
585
586
587 JRT_ENTRY(void, InterpreterRuntime::throw_pending_exception(JavaThread* current))
588 assert(current->has_pending_exception(), "must only be called if there's an exception pending");
589 // nothing to do - eventually we should remove this code entirely (see comments @ call sites)
590 JRT_END
591
592
593 JRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodError(JavaThread* current))
594 THROW(vmSymbols::java_lang_AbstractMethodError());
595 JRT_END
596
597 // This method is called from the "abstract_entry" of the interpreter.
598 // At that point, the arguments have already been removed from the stack
599 // and therefore we don't have the receiver object at our fingertips. (Though,
600 // on some platforms the receiver still resides in a register...). Thus,
601 // we have no choice but print an error message not containing the receiver
602 // type.
603 JRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodErrorWithMethod(JavaThread* current,
604 Method* missingMethod))
605 ResourceMark rm(current);
606 assert(missingMethod != nullptr, "sanity");
607 methodHandle m(current, missingMethod);
608 LinkResolver::throw_abstract_method_error(m, THREAD);
609 JRT_END
610
611 JRT_ENTRY(void, InterpreterRuntime::throw_AbstractMethodErrorVerbose(JavaThread* current,
612 Klass* recvKlass,
613 Method* missingMethod))
614 ResourceMark rm(current);
615 methodHandle mh = methodHandle(current, missingMethod);
616 LinkResolver::throw_abstract_method_error(mh, recvKlass, THREAD);
617 JRT_END
618
619
620 JRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* current))
621 THROW(vmSymbols::java_lang_IncompatibleClassChangeError());
622 JRT_END
623
624 JRT_ENTRY(void, InterpreterRuntime::throw_IncompatibleClassChangeErrorVerbose(JavaThread* current,
625 Klass* recvKlass,
626 Klass* interfaceKlass))
627 ResourceMark rm(current);
628 char buf[1000];
629 buf[0] = '\0';
630 jio_snprintf(buf, sizeof(buf),
631 "Class %s does not implement the requested interface %s",
632 recvKlass ? recvKlass->external_name() : "nullptr",
633 interfaceKlass ? interfaceKlass->external_name() : "nullptr");
634 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
635 JRT_END
636
637 JRT_ENTRY(void, InterpreterRuntime::throw_NullPointerException(JavaThread* current))
638 THROW(vmSymbols::java_lang_NullPointerException());
639 JRT_END
640
641 //------------------------------------------------------------------------------------------------------------------------
642 // Fields
643 //
644
645 void InterpreterRuntime::resolve_get_put(JavaThread* current, Bytecodes::Code bytecode) {
646 LastFrameAccessor last_frame(current);
647 constantPoolHandle pool(current, last_frame.method()->constants());
648 methodHandle m(current, last_frame.method());
649
650 resolve_get_put(bytecode, last_frame.get_index_u2(bytecode), m, pool, true /*initialize_holder*/, current);
651 }
652
653 void InterpreterRuntime::resolve_get_put(Bytecodes::Code bytecode, int field_index,
654 methodHandle& m,
655 constantPoolHandle& pool,
656 bool initialize_holder, TRAPS) {
657 fieldDescriptor info;
658 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_nofast_putfield ||
659 bytecode == Bytecodes::_putstatic);
660 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic);
661
662 {
663 JvmtiHideSingleStepping jhss(THREAD);
664 LinkResolver::resolve_field_access(info, pool, field_index,
682 // an IllegalAccessError if the instruction is not in an instance
683 // initializer method <init>. If resolution were not inhibited, a putfield
684 // in an initializer method could be resolved in the initializer. Subsequent
685 // putfield instructions to the same field would then use cached information.
686 // As a result, those instructions would not pass through the VM. That is,
687 // checks in resolve_field_access() would not be executed for those instructions
688 // and the required IllegalAccessError would not be thrown.
689 //
690 // Also, we need to delay resolving getstatic and putstatic instructions until the
691 // class is initialized. This is required so that access to the static
692 // field will call the initialization function every time until the class
693 // is completely initialized ala. in 2.17.5 in JVM Specification.
694 InstanceKlass* klass = info.field_holder();
695 bool uninitialized_static = is_static && !klass->is_initialized();
696 bool has_initialized_final_update = info.field_holder()->major_version() >= 53 &&
697 info.has_initialized_final_update();
698 assert(!(has_initialized_final_update && !info.access_flags().is_final()), "Fields with initialized final updates must be final");
699
700 Bytecodes::Code get_code = (Bytecodes::Code)0;
701 Bytecodes::Code put_code = (Bytecodes::Code)0;
702 if (!uninitialized_static) {
703 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);
704 if ((is_put && !has_initialized_final_update) || !info.access_flags().is_final()) {
705 put_code = ((is_static) ? Bytecodes::_putstatic : Bytecodes::_putfield);
706 }
707 }
708
709 ResolvedFieldEntry* entry = pool->resolved_field_entry_at(field_index);
710 entry->set_flags(info.access_flags().is_final(), info.access_flags().is_volatile());
711 entry->fill_in(info.field_holder(), info.offset(),
712 checked_cast<u2>(info.index()), checked_cast<u1>(state),
713 static_cast<u1>(get_code), static_cast<u1>(put_code));
714 }
715
716
717 //------------------------------------------------------------------------------------------------------------------------
718 // Synchronization
719 //
720 // The interpreter's synchronization code is factored out so that it can
721 // be shared by method invocation and synchronized blocks.
722 //%note synchronization_3
723
724 //%note monitor_1
725 JRT_ENTRY_NO_ASYNC(void, InterpreterRuntime::monitorenter(JavaThread* current, BasicObjectLock* elem))
726 #ifdef ASSERT
727 current->last_frame().interpreter_frame_verify_monitor(elem);
728 #endif
729 Handle h_obj(current, elem->obj());
730 assert(Universe::heap()->is_in_or_null(h_obj()),
731 "must be null or an object");
732 ObjectSynchronizer::enter(h_obj, elem->lock(), current);
733 assert(Universe::heap()->is_in_or_null(elem->obj()),
734 "must be null or an object");
735 #ifdef ASSERT
736 if (!current->preempting()) current->last_frame().interpreter_frame_verify_monitor(elem);
737 #endif
738 JRT_END
739
740 JRT_LEAF(void, InterpreterRuntime::monitorexit(BasicObjectLock* elem))
741 oop obj = elem->obj();
742 assert(Universe::heap()->is_in(obj), "must be an object");
743 // The object could become unlocked through a JNI call, which we have no other checks for.
744 // Give a fatal message if CheckJNICalls. Otherwise we ignore it.
745 if (obj->is_unlocked()) {
746 if (CheckJNICalls) {
747 fatal("Object has been unlocked by JNI");
748 }
749 return;
750 }
751 ObjectSynchronizer::exit(obj, elem->lock(), JavaThread::current());
752 // Free entry. If it is not cleared, the exception handling code will try to unlock the monitor
753 // again at method exit or in the case of an exception.
754 elem->set_obj(nullptr);
755 JRT_END
756
757
758 JRT_ENTRY(void, InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* current))
759 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
760 JRT_END
761
762
763 JRT_ENTRY(void, InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* current))
764 // Returns an illegal exception to install into the current thread. The
765 // pending_exception flag is cleared so normal exception handling does not
766 // trigger. Any current installed exception will be overwritten. This
767 // method will be called during an exception unwind.
768
769 assert(!HAS_PENDING_EXCEPTION, "no pending exception");
770 Handle exception(current, current->vm_result_oop());
771 assert(exception() != nullptr, "vm result should be set");
772 current->set_vm_result_oop(nullptr); // clear vm result before continuing (may cause memory leaks and assert failures)
773 exception = get_preinitialized_exception(vmClasses::IllegalMonitorStateException_klass(), CATCH);
774 current->set_vm_result_oop(exception());
775 JRT_END
776
777
778 //------------------------------------------------------------------------------------------------------------------------
779 // Invokes
780
781 JRT_ENTRY(Bytecodes::Code, InterpreterRuntime::get_original_bytecode_at(JavaThread* current, Method* method, address bcp))
782 return method->orig_bytecode_at(method->bci_from(bcp));
783 JRT_END
784
785 JRT_ENTRY(void, InterpreterRuntime::set_original_bytecode_at(JavaThread* current, Method* method, address bcp, Bytecodes::Code new_code))
786 method->set_orig_bytecode_at(method->bci_from(bcp), new_code);
787 JRT_END
788
789 JRT_ENTRY(void, InterpreterRuntime::_breakpoint(JavaThread* current, Method* method, address bcp))
790 JvmtiExport::post_raw_breakpoint(current, method, bcp);
791 JRT_END
792
793 void InterpreterRuntime::resolve_invoke(JavaThread* current, Bytecodes::Code bytecode) {
794 LastFrameAccessor last_frame(current);
795 // extract receiver from the outgoing argument list if necessary
796 Handle receiver(current, nullptr);
797 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface ||
798 bytecode == Bytecodes::_invokespecial) {
799 ResourceMark rm(current);
800 methodHandle m (current, last_frame.method());
801 Bytecode_invoke call(m, last_frame.bci());
802 Symbol* signature = call.signature();
803 receiver = Handle(current, last_frame.callee_receiver(signature));
804
805 assert(Universe::heap()->is_in_or_null(receiver()),
806 "sanity check");
807 assert(receiver.is_null() ||
808 !Universe::heap()->is_in(receiver->klass()),
809 "sanity check");
810 }
811
812 // resolve method
891 cache->set_itable_call(
892 bytecode,
893 method_index,
894 info.resolved_klass(),
895 resolved_method,
896 info.itable_index());
897 break;
898 default: ShouldNotReachHere();
899 }
900 }
901
902 void InterpreterRuntime::cds_resolve_invoke(Bytecodes::Code bytecode, int method_index,
903 constantPoolHandle& pool, TRAPS) {
904 LinkInfo link_info(pool, method_index, bytecode, CHECK);
905
906 if (!link_info.resolved_klass()->is_instance_klass() || InstanceKlass::cast(link_info.resolved_klass())->is_linked()) {
907 CallInfo call_info;
908 switch (bytecode) {
909 case Bytecodes::_invokevirtual: LinkResolver::cds_resolve_virtual_call (call_info, link_info, CHECK); break;
910 case Bytecodes::_invokeinterface: LinkResolver::cds_resolve_interface_call(call_info, link_info, CHECK); break;
911 case Bytecodes::_invokespecial: LinkResolver::cds_resolve_special_call (call_info, link_info, CHECK); break;
912
913 default: fatal("Unimplemented: %s", Bytecodes::name(bytecode));
914 }
915 methodHandle resolved_method(THREAD, call_info.resolved_method());
916 guarantee(resolved_method->method_holder()->is_linked(), "");
917 update_invoke_cp_cache_entry(call_info, bytecode, resolved_method, pool, method_index);
918 } else {
919 // FIXME: why a shared class is not linked yet?
920 // Can't link it here since there are no guarantees it'll be prelinked on the next run.
921 ResourceMark rm;
922 InstanceKlass* resolved_iklass = InstanceKlass::cast(link_info.resolved_klass());
923 log_info(aot, resolve)("Not resolved: class not linked: %s %s %s",
924 resolved_iklass->is_shared() ? "is_shared" : "",
925 resolved_iklass->init_state_name(),
926 resolved_iklass->external_name());
927 }
928 }
929
930 // First time execution: Resolve symbols, create a permanent MethodType object.
931 void InterpreterRuntime::resolve_invokehandle(JavaThread* current) {
932 const Bytecodes::Code bytecode = Bytecodes::_invokehandle;
933 LastFrameAccessor last_frame(current);
934
935 // resolve method
936 CallInfo info;
937 constantPoolHandle pool(current, last_frame.method()->constants());
938 int method_index = last_frame.get_index_u2(bytecode);
939 {
940 JvmtiHideSingleStepping jhss(current);
941 JavaThread* THREAD = current; // For exception macros.
942 LinkResolver::resolve_invoke(info, Handle(), pool,
943 method_index, bytecode,
944 CHECK);
945 } // end JvmtiHideSingleStepping
946
947 pool->cache()->set_method_handle(method_index, info);
948 }
949
950 void InterpreterRuntime::cds_resolve_invokehandle(int raw_index,
951 constantPoolHandle& pool, TRAPS) {
952 const Bytecodes::Code bytecode = Bytecodes::_invokehandle;
953 CallInfo info;
954 LinkResolver::resolve_invoke(info, Handle(), pool, raw_index, bytecode, CHECK);
955
956 pool->cache()->set_method_handle(raw_index, info);
957 }
958
959 // First time execution: Resolve symbols, create a permanent CallSite object.
960 void InterpreterRuntime::resolve_invokedynamic(JavaThread* current) {
961 LastFrameAccessor last_frame(current);
962 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic;
963
964 // resolve method
965 CallInfo info;
966 constantPoolHandle pool(current, last_frame.method()->constants());
967 int index = last_frame.get_index_u4(bytecode);
968 {
969 JvmtiHideSingleStepping jhss(current);
970 JavaThread* THREAD = current; // For exception macros.
971 LinkResolver::resolve_invoke(info, Handle(), pool,
972 index, bytecode, CHECK);
973 } // end JvmtiHideSingleStepping
974
975 pool->cache()->set_dynamic_call(info, index);
976 }
977
978 void InterpreterRuntime::cds_resolve_invokedynamic(int raw_index,
979 constantPoolHandle& pool, TRAPS) {
980 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic;
981 CallInfo info;
982 LinkResolver::resolve_invoke(info, Handle(), pool, raw_index, bytecode, CHECK);
983 pool->cache()->set_dynamic_call(info, raw_index);
984 }
985
986 // This function is the interface to the assembly code. It returns the resolved
987 // cpCache entry. This doesn't safepoint, but the helper routines safepoint.
988 // This function will check for redefinition!
989 JRT_ENTRY(void, InterpreterRuntime::resolve_from_cache(JavaThread* current, Bytecodes::Code bytecode)) {
990 switch (bytecode) {
991 case Bytecodes::_getstatic:
992 case Bytecodes::_putstatic:
993 case Bytecodes::_getfield:
994 case Bytecodes::_putfield:
995 resolve_get_put(current, bytecode);
996 break;
997 case Bytecodes::_invokevirtual:
998 case Bytecodes::_invokespecial:
999 case Bytecodes::_invokestatic:
1000 case Bytecodes::_invokeinterface:
1001 resolve_invoke(current, bytecode);
1002 break;
1003 case Bytecodes::_invokehandle:
1004 resolve_invokehandle(current);
1005 break;
1006 case Bytecodes::_invokedynamic:
1007 resolve_invokedynamic(current);
1008 break;
1009 default:
1010 fatal("unexpected bytecode: %s", Bytecodes::name(bytecode));
1011 break;
1012 }
1013 }
1014 JRT_END
1015
1016 //------------------------------------------------------------------------------------------------------------------------
1017 // Miscellaneous
1018
1019
1020 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* current, address branch_bcp) {
1021 // Enable WXWrite: the function is called directly by interpreter.
1022 MACOS_AARCH64_ONLY(ThreadWXEnable wx(WXWrite, current));
1023
1024 // frequency_counter_overflow_inner can throw async exception.
1025 nmethod* nm = frequency_counter_overflow_inner(current, branch_bcp);
1026 assert(branch_bcp != nullptr || nm == nullptr, "always returns null for non OSR requests");
1027 if (branch_bcp != nullptr && nm != nullptr) {
1028 // This was a successful request for an OSR nmethod. Because
1029 // frequency_counter_overflow_inner ends with a safepoint check,
1030 // nm could have been unloaded so look it up again. It's unsafe
1031 // to examine nm directly since it might have been freed and used
1032 // for something else.
1033 LastFrameAccessor last_frame(current);
1034 Method* method = last_frame.method();
1035 int bci = method->bci_from(last_frame.bcp());
1036 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false);
1037 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1038 if (nm != nullptr) {
1039 // in case the transition passed a safepoint we need to barrier this again
1040 if (!bs_nm->nmethod_osr_entry_barrier(nm)) {
1044 }
1045 if (nm != nullptr && current->is_interp_only_mode()) {
1046 // Normally we never get an nm if is_interp_only_mode() is true, because
1047 // policy()->event has a check for this and won't compile the method when
1048 // true. However, it's possible for is_interp_only_mode() to become true
1049 // during the compilation. We don't want to return the nm in that case
1050 // because we want to continue to execute interpreted.
1051 nm = nullptr;
1052 }
1053 #ifndef PRODUCT
1054 if (TraceOnStackReplacement) {
1055 if (nm != nullptr) {
1056 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", p2i(nm->osr_entry()));
1057 nm->print();
1058 }
1059 }
1060 #endif
1061 return nm;
1062 }
1063
1064 JRT_ENTRY(nmethod*,
1065 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* current, address branch_bcp))
1066 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
1067 // flag, in case this method triggers classloading which will call into Java.
1068 UnlockFlagSaver fs(current);
1069
1070 LastFrameAccessor last_frame(current);
1071 assert(last_frame.is_interpreted_frame(), "must come from interpreter");
1072 methodHandle method(current, last_frame.method());
1073 const int branch_bci = branch_bcp != nullptr ? method->bci_from(branch_bcp) : InvocationEntryBci;
1074 const int bci = branch_bcp != nullptr ? method->bci_from(last_frame.bcp()) : InvocationEntryBci;
1075
1076 nmethod* osr_nm = CompilationPolicy::event(method, method, branch_bci, bci, CompLevel_none, nullptr, CHECK_NULL);
1077
1078 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1079 if (osr_nm != nullptr) {
1080 if (!bs_nm->nmethod_osr_entry_barrier(osr_nm)) {
1081 osr_nm = nullptr;
1082 }
1083 }
1084 return osr_nm;
1085 JRT_END
1086
1087 JRT_LEAF(jint, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp))
1088 assert(ProfileInterpreter, "must be profiling interpreter");
1089 int bci = method->bci_from(cur_bcp);
1090 MethodData* mdo = method->method_data();
1091 if (mdo == nullptr) return 0;
1092 return mdo->bci_to_di(bci);
1093 JRT_END
1094
1095 #ifdef ASSERT
1096 JRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp))
1097 assert(ProfileInterpreter, "must be profiling interpreter");
1098
1099 MethodData* mdo = method->method_data();
1100 assert(mdo != nullptr, "must not be null");
1101
1102 int bci = method->bci_from(bcp);
1103
1104 address mdp2 = mdo->bci_to_dp(bci);
1105 if (mdp != mdp2) {
1106 ResourceMark rm;
1107 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci);
1108 int current_di = mdo->dp_to_di(mdp);
1109 int expected_di = mdo->dp_to_di(mdp2);
1110 tty->print_cr(" actual di %d expected di %d", current_di, expected_di);
1111 int expected_approx_bci = mdo->data_at(expected_di)->bci();
1112 int approx_bci = -1;
1113 if (current_di >= 0) {
1114 approx_bci = mdo->data_at(current_di)->bci();
1115 }
1116 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci);
1117 mdo->print_on(tty);
1118 method->print_codes();
1119 }
1120 assert(mdp == mdp2, "wrong mdp");
1121 JRT_END
1122 #endif // ASSERT
1123
1124 JRT_ENTRY(void, InterpreterRuntime::update_mdp_for_ret(JavaThread* current, int return_bci))
1125 assert(ProfileInterpreter, "must be profiling interpreter");
1126 ResourceMark rm(current);
1127 LastFrameAccessor last_frame(current);
1128 assert(last_frame.is_interpreted_frame(), "must come from interpreter");
1129 MethodData* h_mdo = last_frame.method()->method_data();
1130
1131 // Grab a lock to ensure atomic access to setting the return bci and
1132 // the displacement. This can block and GC, invalidating all naked oops.
1133 MutexLocker ml(RetData_lock);
1134
1135 // ProfileData is essentially a wrapper around a derived oop, so we
1136 // need to take the lock before making any ProfileData structures.
1137 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(last_frame.mdp()));
1138 guarantee(data != nullptr, "profile data must be valid");
1139 RetData* rdata = data->as_RetData();
1140 address new_mdp = rdata->fixup_ret(return_bci, h_mdo);
1141 last_frame.set_mdp(new_mdp);
1142 JRT_END
1143
1144 JRT_ENTRY(MethodCounters*, InterpreterRuntime::build_method_counters(JavaThread* current, Method* m))
1145 return Method::build_method_counters(current, m);
1146 JRT_END
1147
1148
1149 JRT_ENTRY(void, InterpreterRuntime::at_safepoint(JavaThread* current))
1150 // We used to need an explicit preserve_arguments here for invoke bytecodes. However,
1151 // stack traversal automatically takes care of preserving arguments for invoke, so
1152 // this is no longer needed.
1153
1154 // JRT_END does an implicit safepoint check, hence we are guaranteed to block
1155 // if this is called during a safepoint
1156
1157 if (JvmtiExport::should_post_single_step()) {
1158 // This function is called by the interpreter when single stepping. Such single
1159 // stepping could unwind a frame. Then, it is important that we process any frames
1160 // that we might return into.
1161 StackWatermarkSet::before_unwind(current);
1162
1163 // We are called during regular safepoints and when the VM is
1164 // single stepping. If any thread is marked for single stepping,
1165 // then we may have JVMTI work to do.
1166 LastFrameAccessor last_frame(current);
1167 JvmtiExport::at_single_stepping_point(current, last_frame.method(), last_frame.bcp());
1168 }
1169 JRT_END
1170
1171 JRT_LEAF(void, InterpreterRuntime::at_unwind(JavaThread* current))
1172 assert(current == JavaThread::current(), "pre-condition");
1173 JFR_ONLY(Jfr::check_and_process_sample_request(current);)
1174 // This function is called by the interpreter when the return poll found a reason
1175 // to call the VM. The reason could be that we are returning into a not yet safe
1176 // to access frame. We handle that below.
1177 // Note that this path does not check for single stepping, because we do not want
1178 // to single step when unwinding frames for an exception being thrown. Instead,
1179 // such single stepping code will use the safepoint table, which will use the
1180 // InterpreterRuntime::at_safepoint callback.
1181 StackWatermarkSet::before_unwind(current);
1182 JRT_END
1183
1184 JRT_ENTRY(void, InterpreterRuntime::post_field_access(JavaThread* current, oopDesc* obj,
1185 ResolvedFieldEntry *entry))
1186
1187 // check the access_flags for the field in the klass
1188
1189 InstanceKlass* ik = entry->field_holder();
1190 int index = entry->field_index();
1191 if (!ik->field_status(index).is_access_watched()) return;
1192
1193 bool is_static = (obj == nullptr);
1194 HandleMark hm(current);
1195
1196 Handle h_obj;
1197 if (!is_static) {
1198 // non-static field accessors have an object, but we need a handle
1199 h_obj = Handle(current, obj);
1200 }
1201 InstanceKlass* field_holder = entry->field_holder(); // HERE
1202 jfieldID fid = jfieldIDWorkaround::to_jfieldID(field_holder, entry->field_offset(), is_static);
1203 LastFrameAccessor last_frame(current);
1204 JvmtiExport::post_field_access(current, last_frame.method(), last_frame.bcp(), field_holder, h_obj, fid);
1205 JRT_END
1206
1207 JRT_ENTRY(void, InterpreterRuntime::post_field_modification(JavaThread* current, oopDesc* obj,
1208 ResolvedFieldEntry *entry, jvalue *value))
1209
1210 InstanceKlass* ik = entry->field_holder();
1211
1212 // check the access_flags for the field in the klass
1213 int index = entry->field_index();
1214 // bail out if field modifications are not watched
1215 if (!ik->field_status(index).is_modification_watched()) return;
1216
1217 char sig_type = '\0';
1218
1219 switch((TosState)entry->tos_state()) {
1220 case btos: sig_type = JVM_SIGNATURE_BYTE; break;
1221 case ztos: sig_type = JVM_SIGNATURE_BOOLEAN; break;
1222 case ctos: sig_type = JVM_SIGNATURE_CHAR; break;
1223 case stos: sig_type = JVM_SIGNATURE_SHORT; break;
1224 case itos: sig_type = JVM_SIGNATURE_INT; break;
1225 case ftos: sig_type = JVM_SIGNATURE_FLOAT; break;
1226 case atos: sig_type = JVM_SIGNATURE_CLASS; break;
1227 case ltos: sig_type = JVM_SIGNATURE_LONG; break;
1228 case dtos: sig_type = JVM_SIGNATURE_DOUBLE; break;
1243 // We assume that the two halves of longs/doubles are stored in interpreter
1244 // stack slots in platform-endian order.
1245 jlong_accessor u;
1246 jint* newval = (jint*)value;
1247 u.words[0] = newval[0];
1248 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag
1249 fvalue.j = u.long_value;
1250 #endif // _LP64
1251
1252 Handle h_obj;
1253 if (!is_static) {
1254 // non-static field accessors have an object, but we need a handle
1255 h_obj = Handle(current, obj);
1256 }
1257
1258 LastFrameAccessor last_frame(current);
1259 JvmtiExport::post_raw_field_modification(current, last_frame.method(), last_frame.bcp(), ik, h_obj,
1260 fid, sig_type, &fvalue);
1261 JRT_END
1262
1263 JRT_ENTRY(void, InterpreterRuntime::post_method_entry(JavaThread* current))
1264 LastFrameAccessor last_frame(current);
1265 JvmtiExport::post_method_entry(current, last_frame.method(), last_frame.get_frame());
1266 JRT_END
1267
1268
1269 // This is a JRT_BLOCK_ENTRY because we have to stash away the return oop
1270 // before transitioning to VM, and restore it after transitioning back
1271 // to Java. The return oop at the top-of-stack, is not walked by the GC.
1272 JRT_BLOCK_ENTRY(void, InterpreterRuntime::post_method_exit(JavaThread* current))
1273 LastFrameAccessor last_frame(current);
1274 JvmtiExport::post_method_exit(current, last_frame.method(), last_frame.get_frame());
1275 JRT_END
1276
1277 JRT_LEAF(int, InterpreterRuntime::interpreter_contains(address pc))
1278 {
1279 return (Interpreter::contains(Continuation::get_top_return_pc_post_barrier(JavaThread::current(), pc)) ? 1 : 0);
1280 }
1281 JRT_END
1282
1283
1284 // Implementation of SignatureHandlerLibrary
1285
1286 #ifndef SHARING_FAST_NATIVE_FINGERPRINTS
1287 // Dummy definition (else normalization method is defined in CPU
1288 // dependent code)
1289 uint64_t InterpreterRuntime::normalize_fast_native_fingerprint(uint64_t fingerprint) {
1290 return fingerprint;
1291 }
1292 #endif
1293
1294 address SignatureHandlerLibrary::set_handler_blob() {
1295 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size);
1296 if (handler_blob == nullptr) {
1297 return nullptr;
1423 MutexLocker mu(SignatureHandlerLibrary_lock);
1424 if (_handlers != nullptr) {
1425 handler_index = _handlers->find(method->signature_handler());
1426 uint64_t fingerprint = Fingerprinter(method).fingerprint();
1427 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint);
1428 fingerprint_index = _fingerprints->find(fingerprint);
1429 }
1430 }
1431 assert(method->signature_handler() == Interpreter::slow_signature_handler() ||
1432 handler_index == fingerprint_index, "sanity check");
1433 #endif // ASSERT
1434 }
1435
1436 BufferBlob* SignatureHandlerLibrary::_handler_blob = nullptr;
1437 address SignatureHandlerLibrary::_handler = nullptr;
1438 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = nullptr;
1439 GrowableArray<address>* SignatureHandlerLibrary::_handlers = nullptr;
1440 address SignatureHandlerLibrary::_buffer = nullptr;
1441
1442
1443 JRT_ENTRY(void, InterpreterRuntime::prepare_native_call(JavaThread* current, Method* method))
1444 methodHandle m(current, method);
1445 assert(m->is_native(), "sanity check");
1446 // lookup native function entry point if it doesn't exist
1447 if (!m->has_native_function()) {
1448 NativeLookup::lookup(m, CHECK);
1449 }
1450 // make sure signature handler is installed
1451 SignatureHandlerLibrary::add(m);
1452 // The interpreter entry point checks the signature handler first,
1453 // before trying to fetch the native entry point and klass mirror.
1454 // We must set the signature handler last, so that multiple processors
1455 // preparing the same method will be sure to see non-null entry & mirror.
1456 JRT_END
1457
1458 #if defined(IA32) || defined(AMD64) || defined(ARM)
1459 JRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* current, void* src_address, void* dest_address))
1460 assert(current == JavaThread::current(), "pre-condition");
1461 if (src_address == dest_address) {
1462 return;
1463 }
1464 ResourceMark rm;
1465 LastFrameAccessor last_frame(current);
1466 assert(last_frame.is_interpreted_frame(), "");
1467 jint bci = last_frame.bci();
1468 methodHandle mh(current, last_frame.method());
1469 Bytecode_invoke invoke(mh, bci);
1470 ArgumentSizeComputer asc(invoke.signature());
1471 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver
1472 Copy::conjoint_jbytes(src_address, dest_address,
1473 size_of_arguments * Interpreter::stackElementSize);
1474 JRT_END
1475 #endif
1476
1477 #if INCLUDE_JVMTI
1478 // This is a support of the JVMTI PopFrame interface.
1479 // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument
1480 // and return it as a vm_result_oop so that it can be reloaded in the list of invokestatic parameters.
1481 // The member_name argument is a saved reference (in local#0) to the member_name.
1482 // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle.
1483 // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated.
1484 JRT_ENTRY(void, InterpreterRuntime::member_name_arg_or_null(JavaThread* current, address member_name,
1485 Method* method, address bcp))
1486 Bytecodes::Code code = Bytecodes::code_at(method, bcp);
1487 if (code != Bytecodes::_invokestatic) {
1488 return;
1489 }
1490 ConstantPool* cpool = method->constants();
1491 int cp_index = Bytes::get_native_u2(bcp + 1);
1492 Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index, code));
1493 Symbol* mname = cpool->name_ref_at(cp_index, code);
1494
1495 if (MethodHandles::has_member_arg(cname, mname)) {
1496 oop member_name_oop = cast_to_oop(member_name);
1497 if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) {
1498 // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated.
1499 member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop);
1500 }
1501 current->set_vm_result_oop(member_name_oop);
1502 } else {
1503 current->set_vm_result_oop(nullptr);
1504 }
1505 JRT_END
1506 #endif // INCLUDE_JVMTI
1507
1508 #ifndef PRODUCT
1509 // This must be a JRT_LEAF function because the interpreter must save registers on x86 to
1510 // call this, which changes rsp and makes the interpreter's expression stack not walkable.
1511 // The generated code still uses call_VM because that will set up the frame pointer for
1512 // bcp and method.
1513 JRT_LEAF(intptr_t, InterpreterRuntime::trace_bytecode(JavaThread* current, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2))
1514 assert(current == JavaThread::current(), "pre-condition");
1515 LastFrameAccessor last_frame(current);
1516 assert(last_frame.is_interpreted_frame(), "must be an interpreted frame");
1517 methodHandle mh(current, last_frame.method());
1518 BytecodeTracer::trace_interpreter(mh, last_frame.bcp(), tos, tos2);
1519 return preserve_this_value;
1520 JRT_END
1521 #endif // !PRODUCT
|
50 #include "oops/method.inline.hpp"
51 #include "oops/objArrayKlass.hpp"
52 #include "oops/objArrayOop.inline.hpp"
53 #include "oops/oop.inline.hpp"
54 #include "oops/symbol.hpp"
55 #include "prims/jvmtiExport.hpp"
56 #include "prims/methodHandles.hpp"
57 #include "prims/nativeLookup.hpp"
58 #include "runtime/atomic.hpp"
59 #include "runtime/continuation.hpp"
60 #include "runtime/deoptimization.hpp"
61 #include "runtime/fieldDescriptor.inline.hpp"
62 #include "runtime/frame.inline.hpp"
63 #include "runtime/handles.inline.hpp"
64 #include "runtime/icache.hpp"
65 #include "runtime/interfaceSupport.inline.hpp"
66 #include "runtime/java.hpp"
67 #include "runtime/javaCalls.hpp"
68 #include "runtime/jfieldIDWorkaround.hpp"
69 #include "runtime/osThread.hpp"
70 #include "runtime/perfData.inline.hpp"
71 #include "runtime/sharedRuntime.hpp"
72 #include "runtime/stackWatermarkSet.hpp"
73 #include "runtime/stubRoutines.hpp"
74 #include "runtime/synchronizer.inline.hpp"
75 #include "services/management.hpp"
76 #include "utilities/align.hpp"
77 #include "utilities/checkedCast.hpp"
78 #include "utilities/copy.hpp"
79 #include "utilities/events.hpp"
80 #if INCLUDE_JFR
81 #include "jfr/jfr.inline.hpp"
82 #endif
83
84 // Helper class to access current interpreter state
85 class LastFrameAccessor : public StackObj {
86 frame _last_frame;
87 public:
88 LastFrameAccessor(JavaThread* current) {
89 assert(current == Thread::current(), "sanity");
90 _last_frame = current->last_frame();
91 }
92 bool is_interpreted_frame() const { return _last_frame.is_interpreted_frame(); }
93 Method* method() const { return _last_frame.interpreter_frame_method(); }
94 address bcp() const { return _last_frame.interpreter_frame_bcp(); }
95 int bci() const { return _last_frame.interpreter_frame_bci(); }
106 int get_index_u2(Bytecodes::Code bc) const { return bytecode().get_index_u2(bc); }
107 int get_index_u4(Bytecodes::Code bc) const { return bytecode().get_index_u4(bc); }
108 int number_of_dimensions() const { return bcp()[3]; }
109
110 oop callee_receiver(Symbol* signature) {
111 return _last_frame.interpreter_callee_receiver(signature);
112 }
113 BasicObjectLock* monitor_begin() const {
114 return _last_frame.interpreter_frame_monitor_begin();
115 }
116 BasicObjectLock* monitor_end() const {
117 return _last_frame.interpreter_frame_monitor_end();
118 }
119 BasicObjectLock* next_monitor(BasicObjectLock* current) const {
120 return _last_frame.next_monitor_in_interpreter_frame(current);
121 }
122
123 frame& get_frame() { return _last_frame; }
124 };
125
126 static bool is_resolved(JavaThread* current) {
127 LastFrameAccessor last_frame(current);
128 ConstantPool* constants = last_frame.method()->constants();
129 Bytecodes::Code bc = last_frame.code();
130
131 if (bc == Bytecodes::_ldc || bc == Bytecodes::_ldc_w || bc == Bytecodes::_ldc2_w ||
132 bc == Bytecodes::_fast_aldc || bc == Bytecodes::_fast_aldc_w) {
133 bool is_wide = (bc != Bytecodes::_ldc) && (bc != Bytecodes::_fast_aldc);
134 int index = (is_wide ? last_frame.get_index_u1(bc) : last_frame.get_index_u2(bc));
135 constantTag tag = constants->tag_at(index);
136 assert(tag.is_klass_or_reference(), "unknown tag: %s", tag.internal_name());
137 return constants->tag_at(index).is_klass();
138 } else if (bc == Bytecodes::_invokedynamic) {
139 int index = last_frame.get_index_u4(bc);
140 int indy_index = index;
141 ResolvedIndyEntry* indy_entry = constants->resolved_indy_entry_at(indy_index);
142 return indy_entry->is_resolved();
143 } else if (Bytecodes::is_invoke(bc)) {
144 int index = last_frame.get_index_u2(bc);
145 ResolvedMethodEntry* rme = constants->resolved_method_entry_at(index);
146 return rme->is_resolved(bc);
147 } else if (Bytecodes::is_field_code(bc) || bc == Bytecodes::_nofast_getfield || bc == Bytecodes::_nofast_putfield) {
148 if (bc == Bytecodes::_nofast_getfield) {
149 bc = Bytecodes::_getfield;
150 } else if (bc == Bytecodes::_nofast_putfield) {
151 bc = Bytecodes::_putfield;
152 }
153 int index = last_frame.get_index_u2(bc);
154 ResolvedFieldEntry* field_entry = constants->cache()->resolved_field_entry_at(index);
155 return field_entry->is_resolved(bc);
156 } else if (bc == Bytecodes::_new) {
157 int index = last_frame.get_index_u2(bc);
158 constantTag tag = constants->tag_at(index);
159 assert(tag.is_klass_or_reference(), "unknown tag: %s", tag.internal_name());
160 return constants->tag_at(index).is_klass();
161 }
162 return false;
163 }
164
165 static void trace_current_location(JavaThread* current) {
166 LogStreamHandle(Debug, init, interpreter) log;
167 if (current->profile_rt_calls() && log.is_enabled()) {
168 ResourceMark rm(current);
169 LastFrameAccessor last_frame(current);
170 Method* caller = last_frame.method();
171 ConstantPool* constants = caller->constants();
172 Bytecodes::Code bc = last_frame.code();
173 log.print("InterpreterRuntime: " INTPTR_FORMAT ": %s: " INTPTR_FORMAT,
174 p2i(current), Bytecodes::name(bc), p2i(caller));
175 if (caller->is_shared()) {
176 log.print(" shared");
177 }
178 if (is_resolved(current)) {
179 log.print(" resolved");
180 }
181 log.print(" ");
182 caller->print_short_name(&log);
183 log.print(" @ %d:", last_frame.bci());
184 int instruction_size = last_frame.bytecode().instruction_size();
185
186 if (Bytecodes::is_invoke(bc) && bc != Bytecodes::_invokedynamic) {
187 int index = last_frame.get_index_u2(bc);
188 ResolvedMethodEntry* rme = constants->resolved_method_entry_at(index);
189 if (rme->is_resolved(bc)) {
190 Method* m = rme->method();
191 if (m != nullptr) {
192 log.print(" %s", m->method_holder()->init_state_name());
193 } else {
194 log.print(" null");
195 }
196 }
197 } else if (Bytecodes::is_field_code(bc) || bc == Bytecodes::_nofast_getfield || bc == Bytecodes::_nofast_putfield) {
198 if (bc == Bytecodes::_nofast_getfield) {
199 bc = Bytecodes::_getfield;
200 } else if (bc == Bytecodes::_nofast_putfield) {
201 bc = Bytecodes::_putfield;
202 }
203 int index = last_frame.get_index_u2(bc);
204 ResolvedFieldEntry* field_entry = constants->cache()->resolved_field_entry_at(index);
205
206 if (field_entry->is_resolved(bc)) {
207 log.print(" %s", field_entry->field_holder()->init_state_name());
208 }
209 } else if (bc == Bytecodes::_new) {
210 int index = last_frame.get_index_u2(bc);
211 constantTag tag = constants->tag_at(index);
212 assert(tag.is_klass_or_reference(), "unknown tag: %s", tag.internal_name());
213 if (constants->tag_at(index).is_klass()) {
214 CPKlassSlot kslot = constants->klass_slot_at(index);
215 int resolved_klass_index = kslot.resolved_klass_index();
216 Klass* k = constants->resolved_klasses()->at(resolved_klass_index);
217 log.print(": %s", InstanceKlass::cast(k)->init_state_name());
218 }
219 }
220 log.print(" ");
221 caller->print_codes_on(last_frame.bci(), last_frame.bci() + instruction_size, &log, /*flags*/ 0);
222
223 LogStreamHandle(Trace, init, interpreter) log1;
224 if (log1.is_enabled()) {
225 if (bc == Bytecodes::_invokedynamic) {
226 int index = last_frame.get_index_u4(bc);
227 int indy_index = index;
228 ResolvedIndyEntry* indy_entry = constants->resolved_indy_entry_at(indy_index);
229 indy_entry->print_on(&log1);
230 } else if (Bytecodes::is_invoke(bc)) {
231 int index = last_frame.get_index_u2(bc);
232 ResolvedMethodEntry* rme = constants->resolved_method_entry_at(index);
233 rme->print_on(&log1);
234 } else if (Bytecodes::is_field_code(bc) || bc == Bytecodes::_nofast_getfield || bc == Bytecodes::_nofast_putfield) {
235 int index = last_frame.get_index_u2(bc);
236 ResolvedFieldEntry* field_entry = constants->cache()->resolved_field_entry_at(index);
237 field_entry->print_on(&log1);
238 }
239 }
240 }
241 }
242
243 //------------------------------------------------------------------------------------------------------------------------
244 // State accessors
245
246 void InterpreterRuntime::set_bcp_and_mdp(address bcp, JavaThread* current) {
247 LastFrameAccessor last_frame(current);
248 last_frame.set_bcp(bcp);
249 if (ProfileInterpreter) {
250 // ProfileTraps uses MDOs independently of ProfileInterpreter.
251 // That is why we must check both ProfileInterpreter and mdo != nullptr.
252 MethodData* mdo = last_frame.method()->method_data();
253 if (mdo != nullptr) {
254 NEEDS_CLEANUP;
255 last_frame.set_mdp(mdo->bci_to_dp(last_frame.bci()));
256 }
257 }
258 }
259
260 //------------------------------------------------------------------------------------------------------------------------
261 // Constants
262
263
264 JRT_ENTRY_PROF(void, InterpreterRuntime, ldc, InterpreterRuntime::ldc(JavaThread* current, bool wide))
265 // access constant pool
266 LastFrameAccessor last_frame(current);
267 ConstantPool* pool = last_frame.method()->constants();
268 int cp_index = wide ? last_frame.get_index_u2(Bytecodes::_ldc_w) : last_frame.get_index_u1(Bytecodes::_ldc);
269 constantTag tag = pool->tag_at(cp_index);
270
271 assert (tag.is_unresolved_klass() || tag.is_klass(), "wrong ldc call");
272 Klass* klass = pool->klass_at(cp_index, CHECK);
273 oop java_class = klass->java_mirror();
274 current->set_vm_result_oop(java_class);
275 JRT_END
276
277 JRT_ENTRY_PROF(void, InterpreterRuntime, resolve_ldc, InterpreterRuntime::resolve_ldc(JavaThread* current, Bytecodes::Code bytecode)) {
278 assert(bytecode == Bytecodes::_ldc ||
279 bytecode == Bytecodes::_ldc_w ||
280 bytecode == Bytecodes::_ldc2_w ||
281 bytecode == Bytecodes::_fast_aldc ||
282 bytecode == Bytecodes::_fast_aldc_w, "wrong bc");
283 ResourceMark rm(current);
284 const bool is_fast_aldc = (bytecode == Bytecodes::_fast_aldc ||
285 bytecode == Bytecodes::_fast_aldc_w);
286 LastFrameAccessor last_frame(current);
287 methodHandle m (current, last_frame.method());
288 Bytecode_loadconstant ldc(m, last_frame.bci());
289
290 // Double-check the size. (Condy can have any type.)
291 BasicType type = ldc.result_type();
292 switch (type2size[type]) {
293 case 2: guarantee(bytecode == Bytecodes::_ldc2_w, ""); break;
294 case 1: guarantee(bytecode != Bytecodes::_ldc2_w, ""); break;
295 default: ShouldNotReachHere();
296 }
297
313 assert(roop == coop, "expected result for assembly code");
314 }
315 }
316 #endif
317 current->set_vm_result_oop(result);
318 if (!is_fast_aldc) {
319 // Tell the interpreter how to unbox the primitive.
320 guarantee(java_lang_boxing_object::is_instance(result, type), "");
321 int offset = java_lang_boxing_object::value_offset(type);
322 intptr_t flags = ((as_TosState(type) << ConstantPoolCache::tos_state_shift)
323 | (offset & ConstantPoolCache::field_index_mask));
324 current->set_vm_result_metadata((Metadata*)flags);
325 }
326 }
327 JRT_END
328
329
330 //------------------------------------------------------------------------------------------------------------------------
331 // Allocation
332
333 JRT_ENTRY_PROF(void, InterpreterRuntime, new, InterpreterRuntime::_new(JavaThread* current, ConstantPool* pool, int index))
334 Klass* k = pool->klass_at(index, CHECK);
335 InstanceKlass* klass = InstanceKlass::cast(k);
336
337 // Make sure we are not instantiating an abstract klass
338 klass->check_valid_for_instantiation(true, CHECK);
339
340 // Make sure klass is initialized
341 klass->initialize(CHECK);
342
343 oop obj = klass->allocate_instance(CHECK);
344 current->set_vm_result_oop(obj);
345 JRT_END
346
347
348 JRT_ENTRY_PROF(void, InterpreterRuntime, newarray, InterpreterRuntime::newarray(JavaThread* current, BasicType type, jint size))
349 oop obj = oopFactory::new_typeArray(type, size, CHECK);
350 current->set_vm_result_oop(obj);
351 JRT_END
352
353
354 JRT_ENTRY_PROF(void, InterpreterRuntime, anewarray, InterpreterRuntime::anewarray(JavaThread* current, ConstantPool* pool, int index, jint size))
355 Klass* klass = pool->klass_at(index, CHECK);
356 objArrayOop obj = oopFactory::new_objArray(klass, size, CHECK);
357 current->set_vm_result_oop(obj);
358 JRT_END
359
360
361 JRT_ENTRY_PROF(void, InterpreterRuntime, multianewarray, InterpreterRuntime::multianewarray(JavaThread* current, jint* first_size_address))
362 // We may want to pass in more arguments - could make this slightly faster
363 LastFrameAccessor last_frame(current);
364 ConstantPool* constants = last_frame.method()->constants();
365 int i = last_frame.get_index_u2(Bytecodes::_multianewarray);
366 Klass* klass = constants->klass_at(i, CHECK);
367 int nof_dims = last_frame.number_of_dimensions();
368 assert(klass->is_klass(), "not a class");
369 assert(nof_dims >= 1, "multianewarray rank must be nonzero");
370
371 // We must create an array of jints to pass to multi_allocate.
372 ResourceMark rm(current);
373 const int small_dims = 10;
374 jint dim_array[small_dims];
375 jint *dims = &dim_array[0];
376 if (nof_dims > small_dims) {
377 dims = (jint*) NEW_RESOURCE_ARRAY(jint, nof_dims);
378 }
379 for (int index = 0; index < nof_dims; index++) {
380 // offset from first_size_address is addressed as local[index]
381 int n = Interpreter::local_offset_in_bytes(index)/jintSize;
382 dims[index] = first_size_address[n];
383 }
384 oop obj = ArrayKlass::cast(klass)->multi_allocate(nof_dims, dims, CHECK);
385 current->set_vm_result_oop(obj);
386 JRT_END
387
388
389 JRT_ENTRY_PROF(void, InterpreterRuntime, register_finalizer, InterpreterRuntime::register_finalizer(JavaThread* current, oopDesc* obj))
390 assert(oopDesc::is_oop(obj), "must be a valid oop");
391 assert(obj->klass()->has_finalizer(), "shouldn't be here otherwise");
392 InstanceKlass::register_finalizer(instanceOop(obj), CHECK);
393 JRT_END
394
395
396 // Quicken instance-of and check-cast bytecodes
397 JRT_ENTRY_PROF(void, InterpreterRuntime, quicken_io_cc, InterpreterRuntime::quicken_io_cc(JavaThread* current))
398 // Force resolving; quicken the bytecode
399 LastFrameAccessor last_frame(current);
400 int which = last_frame.get_index_u2(Bytecodes::_checkcast);
401 ConstantPool* cpool = last_frame.method()->constants();
402 // We'd expect to assert that we're only here to quicken bytecodes, but in a multithreaded
403 // program we might have seen an unquick'd bytecode in the interpreter but have another
404 // thread quicken the bytecode before we get here.
405 // assert( cpool->tag_at(which).is_unresolved_klass(), "should only come here to quicken bytecodes" );
406 Klass* klass = cpool->klass_at(which, CHECK);
407 current->set_vm_result_metadata(klass);
408 JRT_END
409
410
411 //------------------------------------------------------------------------------------------------------------------------
412 // Exceptions
413
414 void InterpreterRuntime::note_trap_inner(JavaThread* current, int reason,
415 const methodHandle& trap_method, int trap_bci) {
416 if (trap_method.not_null()) {
417 MethodData* trap_mdo = trap_method->method_data();
449 static Handle get_preinitialized_exception(Klass* k, TRAPS) {
450 // get klass
451 InstanceKlass* klass = InstanceKlass::cast(k);
452 assert(klass->is_initialized(),
453 "this klass should have been initialized during VM initialization");
454 // create instance - do not call constructor since we may have no
455 // (java) stack space left (should assert constructor is empty)
456 Handle exception;
457 oop exception_oop = klass->allocate_instance(CHECK_(exception));
458 exception = Handle(THREAD, exception_oop);
459 if (StackTraceInThrowable) {
460 java_lang_Throwable::fill_in_stack_trace(exception);
461 }
462 return exception;
463 }
464
465 // Special handling for stack overflow: since we don't have any (java) stack
466 // space left we use the pre-allocated & pre-initialized StackOverflowError
467 // klass to create an stack overflow error instance. We do not call its
468 // constructor for the same reason (it is empty, anyway).
469 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_StackOverflowError,
470 InterpreterRuntime::throw_StackOverflowError(JavaThread* current))
471 Handle exception = get_preinitialized_exception(
472 vmClasses::StackOverflowError_klass(),
473 CHECK);
474 // Increment counter for hs_err file reporting
475 Atomic::inc(&Exceptions::_stack_overflow_errors);
476 // Remove the ScopedValue bindings in case we got a StackOverflowError
477 // while we were trying to manipulate ScopedValue bindings.
478 current->clear_scopedValueBindings();
479 THROW_HANDLE(exception);
480 JRT_END
481
482 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_delayed_StackOverflowError,
483 InterpreterRuntime::throw_delayed_StackOverflowError(JavaThread* current))
484 Handle exception = get_preinitialized_exception(
485 vmClasses::StackOverflowError_klass(),
486 CHECK);
487 java_lang_Throwable::set_message(exception(),
488 Universe::delayed_stack_overflow_error_message());
489 // Increment counter for hs_err file reporting
490 Atomic::inc(&Exceptions::_stack_overflow_errors);
491 // Remove the ScopedValue bindings in case we got a StackOverflowError
492 // while we were trying to manipulate ScopedValue bindings.
493 current->clear_scopedValueBindings();
494 THROW_HANDLE(exception);
495 JRT_END
496
497 JRT_ENTRY_PROF(void, InterpreterRuntime, create_exception,
498 InterpreterRuntime::create_exception(JavaThread* current, char* name, char* message))
499 // lookup exception klass
500 TempNewSymbol s = SymbolTable::new_symbol(name);
501 if (ProfileTraps) {
502 if (s == vmSymbols::java_lang_ArithmeticException()) {
503 note_trap(current, Deoptimization::Reason_div0_check);
504 } else if (s == vmSymbols::java_lang_NullPointerException()) {
505 note_trap(current, Deoptimization::Reason_null_check);
506 }
507 }
508 // create exception
509 Handle exception = Exceptions::new_exception(current, s, message);
510 current->set_vm_result_oop(exception());
511 JRT_END
512
513
514 JRT_ENTRY_PROF(void, InterpreterRuntime, create_klass_exception,
515 InterpreterRuntime::create_klass_exception(JavaThread* current, char* name, oopDesc* obj))
516 // Produce the error message first because note_trap can safepoint
517 ResourceMark rm(current);
518 const char* klass_name = obj->klass()->external_name();
519 // lookup exception klass
520 TempNewSymbol s = SymbolTable::new_symbol(name);
521 if (ProfileTraps) {
522 if (s == vmSymbols::java_lang_ArrayStoreException()) {
523 note_trap(current, Deoptimization::Reason_array_check);
524 } else {
525 note_trap(current, Deoptimization::Reason_class_check);
526 }
527 }
528 // create exception, with klass name as detail message
529 Handle exception = Exceptions::new_exception(current, s, klass_name);
530 current->set_vm_result_oop(exception());
531 JRT_END
532
533 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_ArrayIndexOutOfBoundsException,
534 InterpreterRuntime::throw_ArrayIndexOutOfBoundsException(JavaThread* current, arrayOopDesc* a, jint index))
535 // Produce the error message first because note_trap can safepoint
536 ResourceMark rm(current);
537 stringStream ss;
538 ss.print("Index %d out of bounds for length %d", index, a->length());
539
540 if (ProfileTraps) {
541 note_trap(current, Deoptimization::Reason_range_check);
542 }
543
544 THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string());
545 JRT_END
546
547 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_ClassCastException,
548 InterpreterRuntime::throw_ClassCastException(
549 JavaThread* current, oopDesc* obj))
550
551 // Produce the error message first because note_trap can safepoint
552 ResourceMark rm(current);
553 char* message = SharedRuntime::generate_class_cast_message(
554 current, obj->klass());
555
556 if (ProfileTraps) {
557 note_trap(current, Deoptimization::Reason_class_check);
558 }
559
560 // create exception
561 THROW_MSG(vmSymbols::java_lang_ClassCastException(), message);
562 JRT_END
563
564 // exception_handler_for_exception(...) returns the continuation address,
565 // the exception oop (via TLS) and sets the bci/bcp for the continuation.
566 // The exception oop is returned to make sure it is preserved over GC (it
567 // is only on the stack if the exception was thrown explicitly via athrow).
568 // During this operation, the expression stack contains the values for the
569 // bci where the exception happened. If the exception was propagated back
570 // from a call, the expression stack contains the values for the bci at the
571 // invoke w/o arguments (i.e., as if one were inside the call).
572 // Note that the implementation of this method assumes it's only called when an exception has actually occured
573 JRT_ENTRY_PROF(address, InterpreterRuntime, exception_handler_for_exception,
574 InterpreterRuntime::exception_handler_for_exception(JavaThread* current, oopDesc* exception))
575 // We get here after we have unwound from a callee throwing an exception
576 // into the interpreter. Any deferred stack processing is notified of
577 // the event via the StackWatermarkSet.
578 StackWatermarkSet::after_unwind(current);
579
580 LastFrameAccessor last_frame(current);
581 Handle h_exception(current, exception);
582 methodHandle h_method (current, last_frame.method());
583 constantPoolHandle h_constants(current, h_method->constants());
584 bool should_repeat;
585 int handler_bci;
586 int current_bci = last_frame.bci();
587
588 if (current->frames_to_pop_failed_realloc() > 0) {
589 // Allocation of scalar replaced object used in this frame
590 // failed. Unconditionally pop the frame.
591 current->dec_frames_to_pop_failed_realloc();
592 current->set_vm_result_oop(h_exception());
593 // If the method is synchronized we already unlocked the monitor
594 // during deoptimization so the interpreter needs to skip it when
693 h_method->set_exception_handler_entered(handler_bci); // profiling
694 #ifndef ZERO
695 set_bcp_and_mdp(handler_pc, current);
696 continuation = Interpreter::dispatch_table(vtos)[*handler_pc];
697 #else
698 continuation = (address)(intptr_t) handler_bci;
699 #endif
700 }
701
702 // notify debugger of an exception catch
703 // (this is good for exceptions caught in native methods as well)
704 if (JvmtiExport::can_post_on_exceptions()) {
705 JvmtiExport::notice_unwind_due_to_exception(current, h_method(), handler_pc, h_exception(), (handler_pc != nullptr));
706 }
707
708 current->set_vm_result_oop(h_exception());
709 return continuation;
710 JRT_END
711
712
713 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_pending_exception, InterpreterRuntime::throw_pending_exception(JavaThread* current))
714 assert(current->has_pending_exception(), "must only be called if there's an exception pending");
715 // nothing to do - eventually we should remove this code entirely (see comments @ call sites)
716 JRT_END
717
718
719 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_AbstractMethodError, InterpreterRuntime::throw_AbstractMethodError(JavaThread* current))
720 THROW(vmSymbols::java_lang_AbstractMethodError());
721 JRT_END
722
723 // This method is called from the "abstract_entry" of the interpreter.
724 // At that point, the arguments have already been removed from the stack
725 // and therefore we don't have the receiver object at our fingertips. (Though,
726 // on some platforms the receiver still resides in a register...). Thus,
727 // we have no choice but print an error message not containing the receiver
728 // type.
729 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_AbstractMethodErrorWithMethod,
730 InterpreterRuntime::throw_AbstractMethodErrorWithMethod(JavaThread* current,
731 Method* missingMethod))
732 ResourceMark rm(current);
733 assert(missingMethod != nullptr, "sanity");
734 methodHandle m(current, missingMethod);
735 LinkResolver::throw_abstract_method_error(m, THREAD);
736 JRT_END
737
738 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_AbstractMethodErrorVerbose,
739 InterpreterRuntime::throw_AbstractMethodErrorVerbose(JavaThread* current,
740 Klass* recvKlass,
741 Method* missingMethod))
742 ResourceMark rm(current);
743 methodHandle mh = methodHandle(current, missingMethod);
744 LinkResolver::throw_abstract_method_error(mh, recvKlass, THREAD);
745 JRT_END
746
747
748 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_IncompatibleClassChangeError,
749 InterpreterRuntime::throw_IncompatibleClassChangeError(JavaThread* current))
750 THROW(vmSymbols::java_lang_IncompatibleClassChangeError());
751 JRT_END
752
753 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_IncompatibleClassChangeErrorVerbose,
754 InterpreterRuntime::throw_IncompatibleClassChangeErrorVerbose(JavaThread* current,
755 Klass* recvKlass,
756 Klass* interfaceKlass))
757 ResourceMark rm(current);
758 char buf[1000];
759 buf[0] = '\0';
760 jio_snprintf(buf, sizeof(buf),
761 "Class %s does not implement the requested interface %s",
762 recvKlass ? recvKlass->external_name() : "nullptr",
763 interfaceKlass ? interfaceKlass->external_name() : "nullptr");
764 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
765 JRT_END
766
767 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_NullPointerException,
768 InterpreterRuntime::throw_NullPointerException(JavaThread* current))
769 THROW(vmSymbols::java_lang_NullPointerException());
770 JRT_END
771
772 //------------------------------------------------------------------------------------------------------------------------
773 // Fields
774 //
775
776 PROF_ENTRY(void, InterpreterRuntime, resolve_getfield, InterpreterRuntime::resolve_getfield(JavaThread* current))
777 resolve_get_put(current, Bytecodes::_getfield);
778 PROF_END
779
780 PROF_ENTRY(void, InterpreterRuntime, resolve_putfield, InterpreterRuntime::resolve_putfield(JavaThread* current))
781 resolve_get_put(current, Bytecodes::_putfield);
782 PROF_END
783
784 PROF_ENTRY(void, InterpreterRuntime, resolve_getstatic, InterpreterRuntime::resolve_getstatic(JavaThread* current))
785 resolve_get_put(current, Bytecodes::_getstatic);
786 PROF_END
787
788 PROF_ENTRY(void, InterpreterRuntime, resolve_putstatic, InterpreterRuntime::resolve_putstatic(JavaThread* current))
789 resolve_get_put(current, Bytecodes::_putstatic);
790 PROF_END
791
792 void InterpreterRuntime::resolve_get_put(JavaThread* current, Bytecodes::Code bytecode) {
793 LastFrameAccessor last_frame(current);
794 constantPoolHandle pool(current, last_frame.method()->constants());
795 methodHandle m(current, last_frame.method());
796
797 resolve_get_put(bytecode, last_frame.get_index_u2(bytecode), m, pool, true /*initialize_holder*/, current);
798 }
799
800 void InterpreterRuntime::resolve_get_put(Bytecodes::Code bytecode, int field_index,
801 methodHandle& m,
802 constantPoolHandle& pool,
803 bool initialize_holder, TRAPS) {
804 fieldDescriptor info;
805 bool is_put = (bytecode == Bytecodes::_putfield || bytecode == Bytecodes::_nofast_putfield ||
806 bytecode == Bytecodes::_putstatic);
807 bool is_static = (bytecode == Bytecodes::_getstatic || bytecode == Bytecodes::_putstatic);
808
809 {
810 JvmtiHideSingleStepping jhss(THREAD);
811 LinkResolver::resolve_field_access(info, pool, field_index,
829 // an IllegalAccessError if the instruction is not in an instance
830 // initializer method <init>. If resolution were not inhibited, a putfield
831 // in an initializer method could be resolved in the initializer. Subsequent
832 // putfield instructions to the same field would then use cached information.
833 // As a result, those instructions would not pass through the VM. That is,
834 // checks in resolve_field_access() would not be executed for those instructions
835 // and the required IllegalAccessError would not be thrown.
836 //
837 // Also, we need to delay resolving getstatic and putstatic instructions until the
838 // class is initialized. This is required so that access to the static
839 // field will call the initialization function every time until the class
840 // is completely initialized ala. in 2.17.5 in JVM Specification.
841 InstanceKlass* klass = info.field_holder();
842 bool uninitialized_static = is_static && !klass->is_initialized();
843 bool has_initialized_final_update = info.field_holder()->major_version() >= 53 &&
844 info.has_initialized_final_update();
845 assert(!(has_initialized_final_update && !info.access_flags().is_final()), "Fields with initialized final updates must be final");
846
847 Bytecodes::Code get_code = (Bytecodes::Code)0;
848 Bytecodes::Code put_code = (Bytecodes::Code)0;
849 if (!uninitialized_static || VM_Version::supports_fast_class_init_checks()) {
850 #if !defined(X86) && !defined(AARCH64)
851 guarantee(!uninitialized_static, "fast class init checks missing in interpreter"); // FIXME
852 #endif // !X86 && !AARCH64
853 get_code = ((is_static) ? Bytecodes::_getstatic : Bytecodes::_getfield);
854 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 ResolvedFieldEntry* entry = pool->resolved_field_entry_at(field_index);
860 entry->set_flags(info.access_flags().is_final(), info.access_flags().is_volatile());
861 entry->fill_in(info.field_holder(), info.offset(),
862 checked_cast<u2>(info.index()), checked_cast<u1>(state),
863 static_cast<u1>(get_code), static_cast<u1>(put_code));
864 }
865
866
867 //------------------------------------------------------------------------------------------------------------------------
868 // Synchronization
869 //
870 // The interpreter's synchronization code is factored out so that it can
871 // be shared by method invocation and synchronized blocks.
872 //%note synchronization_3
873
874 //%note monitor_1
875 JRT_ENTRY_NO_ASYNC_PROF(void, InterpreterRuntime, monitorenter, InterpreterRuntime::monitorenter(JavaThread* current, BasicObjectLock* elem))
876 #ifdef ASSERT
877 current->last_frame().interpreter_frame_verify_monitor(elem);
878 #endif
879 Handle h_obj(current, elem->obj());
880 assert(Universe::heap()->is_in_or_null(h_obj()),
881 "must be null or an object");
882 ObjectSynchronizer::enter(h_obj, elem->lock(), current);
883 assert(Universe::heap()->is_in_or_null(elem->obj()),
884 "must be null or an object");
885 #ifdef ASSERT
886 if (!current->preempting()) current->last_frame().interpreter_frame_verify_monitor(elem);
887 #endif
888 JRT_END
889
890 JRT_LEAF_PROF_NO_THREAD(void, InterpreterRuntime, monitorexit, InterpreterRuntime::monitorexit(BasicObjectLock* elem))
891 oop obj = elem->obj();
892 assert(Universe::heap()->is_in(obj), "must be an object");
893 // The object could become unlocked through a JNI call, which we have no other checks for.
894 // Give a fatal message if CheckJNICalls. Otherwise we ignore it.
895 if (obj->is_unlocked()) {
896 if (CheckJNICalls) {
897 fatal("Object has been unlocked by JNI");
898 }
899 return;
900 }
901 ObjectSynchronizer::exit(obj, elem->lock(), JavaThread::current());
902 // Free entry. If it is not cleared, the exception handling code will try to unlock the monitor
903 // again at method exit or in the case of an exception.
904 elem->set_obj(nullptr);
905 JRT_END
906
907
908 JRT_ENTRY_PROF(void, InterpreterRuntime, throw_illegal_monitor_state_exception,
909 InterpreterRuntime::throw_illegal_monitor_state_exception(JavaThread* current))
910 THROW(vmSymbols::java_lang_IllegalMonitorStateException());
911 JRT_END
912
913
914 JRT_ENTRY_PROF(void, InterpreterRuntime, new_illegal_monitor_state_exception,
915 InterpreterRuntime::new_illegal_monitor_state_exception(JavaThread* current))
916 // Returns an illegal exception to install into the current thread. The
917 // pending_exception flag is cleared so normal exception handling does not
918 // trigger. Any current installed exception will be overwritten. This
919 // method will be called during an exception unwind.
920
921 assert(!HAS_PENDING_EXCEPTION, "no pending exception");
922 Handle exception(current, current->vm_result_oop());
923 assert(exception() != nullptr, "vm result should be set");
924 current->set_vm_result_oop(nullptr); // clear vm result before continuing (may cause memory leaks and assert failures)
925 exception = get_preinitialized_exception(vmClasses::IllegalMonitorStateException_klass(), CATCH);
926 current->set_vm_result_oop(exception());
927 JRT_END
928
929
930 //------------------------------------------------------------------------------------------------------------------------
931 // Invokes
932
933 JRT_ENTRY_PROF(Bytecodes::Code, InterpreterRuntime, get_original_bytecode_at, InterpreterRuntime::get_original_bytecode_at(JavaThread* current, Method* method, address bcp))
934 return method->orig_bytecode_at(method->bci_from(bcp));
935 JRT_END
936
937 JRT_ENTRY_PROF(void, InterpreterRuntime, set_original_bytecode_at, InterpreterRuntime::set_original_bytecode_at(JavaThread* current, Method* method, address bcp, Bytecodes::Code new_code))
938 method->set_orig_bytecode_at(method->bci_from(bcp), new_code);
939 JRT_END
940
941 JRT_ENTRY_PROF(void, InterpreterRuntime, breakpoint, InterpreterRuntime::_breakpoint(JavaThread* current, Method* method, address bcp))
942 JvmtiExport::post_raw_breakpoint(current, method, bcp);
943 JRT_END
944
945 PROF_ENTRY(void, InterpreterRuntime, resolve_invokevirtual, InterpreterRuntime::resolve_invokevirtual(JavaThread* current))
946 resolve_invoke(current, Bytecodes::_invokevirtual);
947 PROF_END
948
949 PROF_ENTRY(void, InterpreterRuntime, resolve_invokespecial, InterpreterRuntime::resolve_invokespecial(JavaThread* current))
950 resolve_invoke(current, Bytecodes::_invokespecial);
951 PROF_END
952
953 PROF_ENTRY(void, InterpreterRuntime, resolve_invokestatic, InterpreterRuntime::resolve_invokestatic(JavaThread* current))
954 resolve_invoke(current, Bytecodes::_invokestatic);
955 PROF_END
956
957 PROF_ENTRY(void, InterpreterRuntime, resolve_invokeinterface, InterpreterRuntime::resolve_invokeinterface(JavaThread* current))
958 resolve_invoke(current, Bytecodes::_invokeinterface);
959 PROF_END
960
961 void InterpreterRuntime::resolve_invoke(JavaThread* current, Bytecodes::Code bytecode) {
962 LastFrameAccessor last_frame(current);
963 // extract receiver from the outgoing argument list if necessary
964 Handle receiver(current, nullptr);
965 if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface ||
966 bytecode == Bytecodes::_invokespecial) {
967 ResourceMark rm(current);
968 methodHandle m (current, last_frame.method());
969 Bytecode_invoke call(m, last_frame.bci());
970 Symbol* signature = call.signature();
971 receiver = Handle(current, last_frame.callee_receiver(signature));
972
973 assert(Universe::heap()->is_in_or_null(receiver()),
974 "sanity check");
975 assert(receiver.is_null() ||
976 !Universe::heap()->is_in(receiver->klass()),
977 "sanity check");
978 }
979
980 // resolve method
1059 cache->set_itable_call(
1060 bytecode,
1061 method_index,
1062 info.resolved_klass(),
1063 resolved_method,
1064 info.itable_index());
1065 break;
1066 default: ShouldNotReachHere();
1067 }
1068 }
1069
1070 void InterpreterRuntime::cds_resolve_invoke(Bytecodes::Code bytecode, int method_index,
1071 constantPoolHandle& pool, TRAPS) {
1072 LinkInfo link_info(pool, method_index, bytecode, CHECK);
1073
1074 if (!link_info.resolved_klass()->is_instance_klass() || InstanceKlass::cast(link_info.resolved_klass())->is_linked()) {
1075 CallInfo call_info;
1076 switch (bytecode) {
1077 case Bytecodes::_invokevirtual: LinkResolver::cds_resolve_virtual_call (call_info, link_info, CHECK); break;
1078 case Bytecodes::_invokeinterface: LinkResolver::cds_resolve_interface_call(call_info, link_info, CHECK); break;
1079 case Bytecodes::_invokestatic: LinkResolver::cds_resolve_static_call (call_info, link_info, CHECK); break;
1080 case Bytecodes::_invokespecial: LinkResolver::cds_resolve_special_call (call_info, link_info, CHECK); break;
1081
1082 default: fatal("Unimplemented: %s", Bytecodes::name(bytecode));
1083 }
1084 methodHandle resolved_method(THREAD, call_info.resolved_method());
1085 guarantee(resolved_method->method_holder()->is_linked(), "");
1086 update_invoke_cp_cache_entry(call_info, bytecode, resolved_method, pool, method_index);
1087 } else {
1088 // FIXME: why a shared class is not linked yet?
1089 // Can't link it here since there are no guarantees it'll be prelinked on the next run.
1090 ResourceMark rm;
1091 InstanceKlass* resolved_iklass = InstanceKlass::cast(link_info.resolved_klass());
1092 log_info(aot, resolve)("Not resolved: class not linked: %s %s %s",
1093 resolved_iklass->is_shared() ? "is_shared" : "",
1094 resolved_iklass->init_state_name(),
1095 resolved_iklass->external_name());
1096 }
1097 }
1098
1099 // First time execution: Resolve symbols, create a permanent MethodType object.
1100 PROF_ENTRY(void, InterpreterRuntime, resolve_invokehandle, InterpreterRuntime::resolve_invokehandle(JavaThread* current))
1101 const Bytecodes::Code bytecode = Bytecodes::_invokehandle;
1102 LastFrameAccessor last_frame(current);
1103
1104 // resolve method
1105 CallInfo info;
1106 constantPoolHandle pool(current, last_frame.method()->constants());
1107 int method_index = last_frame.get_index_u2(bytecode);
1108 {
1109 JvmtiHideSingleStepping jhss(current);
1110 JavaThread* THREAD = current; // For exception macros.
1111 LinkResolver::resolve_invoke(info, Handle(), pool,
1112 method_index, bytecode,
1113 CHECK);
1114 } // end JvmtiHideSingleStepping
1115
1116 pool->cache()->set_method_handle(method_index, info);
1117 PROF_END
1118
1119 void InterpreterRuntime::cds_resolve_invokehandle(int raw_index,
1120 constantPoolHandle& pool, TRAPS) {
1121 const Bytecodes::Code bytecode = Bytecodes::_invokehandle;
1122 CallInfo info;
1123 LinkResolver::resolve_invoke(info, Handle(), pool, raw_index, bytecode, CHECK);
1124
1125 pool->cache()->set_method_handle(raw_index, info);
1126 }
1127
1128 // First time execution: Resolve symbols, create a permanent CallSite object.
1129 PROF_ENTRY(void, InterpreterRuntime, resolve_invokedynamic, InterpreterRuntime::resolve_invokedynamic(JavaThread* current))
1130 LastFrameAccessor last_frame(current);
1131 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic;
1132
1133 // resolve method
1134 CallInfo info;
1135 constantPoolHandle pool(current, last_frame.method()->constants());
1136 int index = last_frame.get_index_u4(bytecode);
1137 {
1138 JvmtiHideSingleStepping jhss(current);
1139 JavaThread* THREAD = current; // For exception macros.
1140 LinkResolver::resolve_invoke(info, Handle(), pool,
1141 index, bytecode, CHECK);
1142 } // end JvmtiHideSingleStepping
1143
1144 pool->cache()->set_dynamic_call(info, index);
1145 PROF_END
1146
1147 void InterpreterRuntime::cds_resolve_invokedynamic(int raw_index,
1148 constantPoolHandle& pool, TRAPS) {
1149 const Bytecodes::Code bytecode = Bytecodes::_invokedynamic;
1150 CallInfo info;
1151 LinkResolver::resolve_invoke(info, Handle(), pool, raw_index, bytecode, CHECK);
1152 pool->cache()->set_dynamic_call(info, raw_index);
1153 }
1154
1155 // This function is the interface to the assembly code. It returns the resolved
1156 // cpCache entry. This doesn't safepoint, but the helper routines safepoint.
1157 // This function will check for redefinition!
1158 JRT_ENTRY(void, InterpreterRuntime::resolve_from_cache(JavaThread* current, Bytecodes::Code bytecode)) {
1159 trace_current_location(current);
1160
1161 switch (bytecode) {
1162 case Bytecodes::_getstatic: resolve_getstatic(current); break;
1163 case Bytecodes::_putstatic: resolve_putstatic(current); break;
1164 case Bytecodes::_getfield: resolve_getfield(current); break;
1165 case Bytecodes::_putfield: resolve_putfield(current); break;
1166
1167 case Bytecodes::_invokevirtual: resolve_invokevirtual(current); break;
1168 case Bytecodes::_invokespecial: resolve_invokespecial(current); break;
1169 case Bytecodes::_invokestatic: resolve_invokestatic(current); break;
1170 case Bytecodes::_invokeinterface: resolve_invokeinterface(current); break;
1171 case Bytecodes::_invokehandle: resolve_invokehandle(current); break;
1172 case Bytecodes::_invokedynamic: resolve_invokedynamic(current); break;
1173
1174 default:
1175 fatal("unexpected bytecode: %s", Bytecodes::name(bytecode));
1176 break;
1177 }
1178 }
1179 JRT_END
1180
1181 //------------------------------------------------------------------------------------------------------------------------
1182 // Miscellaneous
1183
1184
1185 nmethod* InterpreterRuntime::frequency_counter_overflow(JavaThread* current, address branch_bcp) {
1186 assert(!PreloadOnly, "Should not be using interpreter counters");
1187
1188 // Enable WXWrite: the function is called directly by interpreter.
1189 MACOS_AARCH64_ONLY(ThreadWXEnable wx(WXWrite, current));
1190
1191 // frequency_counter_overflow_inner can throw async exception.
1192 nmethod* nm = frequency_counter_overflow_inner(current, branch_bcp);
1193 assert(branch_bcp != nullptr || nm == nullptr, "always returns null for non OSR requests");
1194 if (branch_bcp != nullptr && nm != nullptr) {
1195 // This was a successful request for an OSR nmethod. Because
1196 // frequency_counter_overflow_inner ends with a safepoint check,
1197 // nm could have been unloaded so look it up again. It's unsafe
1198 // to examine nm directly since it might have been freed and used
1199 // for something else.
1200 LastFrameAccessor last_frame(current);
1201 Method* method = last_frame.method();
1202 int bci = method->bci_from(last_frame.bcp());
1203 nm = method->lookup_osr_nmethod_for(bci, CompLevel_none, false);
1204 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1205 if (nm != nullptr) {
1206 // in case the transition passed a safepoint we need to barrier this again
1207 if (!bs_nm->nmethod_osr_entry_barrier(nm)) {
1211 }
1212 if (nm != nullptr && current->is_interp_only_mode()) {
1213 // Normally we never get an nm if is_interp_only_mode() is true, because
1214 // policy()->event has a check for this and won't compile the method when
1215 // true. However, it's possible for is_interp_only_mode() to become true
1216 // during the compilation. We don't want to return the nm in that case
1217 // because we want to continue to execute interpreted.
1218 nm = nullptr;
1219 }
1220 #ifndef PRODUCT
1221 if (TraceOnStackReplacement) {
1222 if (nm != nullptr) {
1223 tty->print("OSR entry @ pc: " INTPTR_FORMAT ": ", p2i(nm->osr_entry()));
1224 nm->print();
1225 }
1226 }
1227 #endif
1228 return nm;
1229 }
1230
1231 JRT_ENTRY_PROF(nmethod*, InterpreterRuntime, frequency_counter_overflow,
1232 InterpreterRuntime::frequency_counter_overflow_inner(JavaThread* current, address branch_bcp))
1233 // use UnlockFlagSaver to clear and restore the _do_not_unlock_if_synchronized
1234 // flag, in case this method triggers classloading which will call into Java.
1235 UnlockFlagSaver fs(current);
1236
1237 LastFrameAccessor last_frame(current);
1238 assert(last_frame.is_interpreted_frame(), "must come from interpreter");
1239 methodHandle method(current, last_frame.method());
1240 const int branch_bci = branch_bcp != nullptr ? method->bci_from(branch_bcp) : InvocationEntryBci;
1241 const int bci = branch_bcp != nullptr ? method->bci_from(last_frame.bcp()) : InvocationEntryBci;
1242
1243 nmethod* osr_nm = CompilationPolicy::event(method, method, branch_bci, bci, CompLevel_none, nullptr, CHECK_NULL);
1244
1245 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1246 if (osr_nm != nullptr) {
1247 if (!bs_nm->nmethod_osr_entry_barrier(osr_nm)) {
1248 osr_nm = nullptr;
1249 }
1250 }
1251 return osr_nm;
1252 JRT_END
1253
1254 JRT_LEAF_PROF_NO_THREAD(jint, InterpreterRuntime, bcp_to_di, InterpreterRuntime::bcp_to_di(Method* method, address cur_bcp))
1255 assert(ProfileInterpreter, "must be profiling interpreter");
1256 int bci = method->bci_from(cur_bcp);
1257 MethodData* mdo = method->method_data();
1258 if (mdo == nullptr) return 0;
1259 return mdo->bci_to_di(bci);
1260 JRT_END
1261
1262 #ifdef ASSERT
1263 JRT_LEAF(void, InterpreterRuntime::verify_mdp(Method* method, address bcp, address mdp))
1264 assert(ProfileInterpreter, "must be profiling interpreter");
1265
1266 MethodData* mdo = method->method_data();
1267 assert(mdo != nullptr, "must not be null");
1268
1269 int bci = method->bci_from(bcp);
1270
1271 address mdp2 = mdo->bci_to_dp(bci);
1272 if (mdp != mdp2) {
1273 ResourceMark rm;
1274 tty->print_cr("FAILED verify : actual mdp %p expected mdp %p @ bci %d", mdp, mdp2, bci);
1275 int current_di = mdo->dp_to_di(mdp);
1276 int expected_di = mdo->dp_to_di(mdp2);
1277 tty->print_cr(" actual di %d expected di %d", current_di, expected_di);
1278 int expected_approx_bci = mdo->data_at(expected_di)->bci();
1279 int approx_bci = -1;
1280 if (current_di >= 0) {
1281 approx_bci = mdo->data_at(current_di)->bci();
1282 }
1283 tty->print_cr(" actual bci is %d expected bci %d", approx_bci, expected_approx_bci);
1284 mdo->print_on(tty);
1285 method->print_codes();
1286 }
1287 assert(mdp == mdp2, "wrong mdp");
1288 JRT_END
1289 #endif // ASSERT
1290
1291 JRT_ENTRY_PROF(void, InterpreterRuntime, update_mdp_for_ret, InterpreterRuntime::update_mdp_for_ret(JavaThread* current, int return_bci))
1292 assert(!PreloadOnly, "Should not be using interpreter counters");
1293 assert(ProfileInterpreter, "must be profiling interpreter");
1294 ResourceMark rm(current);
1295 LastFrameAccessor last_frame(current);
1296 assert(last_frame.is_interpreted_frame(), "must come from interpreter");
1297 MethodData* h_mdo = last_frame.method()->method_data();
1298
1299 // Grab a lock to ensure atomic access to setting the return bci and
1300 // the displacement. This can block and GC, invalidating all naked oops.
1301 MutexLocker ml(RetData_lock);
1302
1303 // ProfileData is essentially a wrapper around a derived oop, so we
1304 // need to take the lock before making any ProfileData structures.
1305 ProfileData* data = h_mdo->data_at(h_mdo->dp_to_di(last_frame.mdp()));
1306 guarantee(data != nullptr, "profile data must be valid");
1307 RetData* rdata = data->as_RetData();
1308 address new_mdp = rdata->fixup_ret(return_bci, h_mdo);
1309 last_frame.set_mdp(new_mdp);
1310 JRT_END
1311
1312 JRT_ENTRY_PROF(MethodCounters*, InterpreterRuntime, build_method_counters, InterpreterRuntime::build_method_counters(JavaThread* current, Method* m))
1313 return Method::build_method_counters(current, m);
1314 JRT_END
1315
1316
1317 JRT_ENTRY_PROF(void, InterpreterRuntime, at_safepoint, InterpreterRuntime::at_safepoint(JavaThread* current))
1318 // We used to need an explicit preserve_arguments here for invoke bytecodes. However,
1319 // stack traversal automatically takes care of preserving arguments for invoke, so
1320 // this is no longer needed.
1321
1322 // JRT_END does an implicit safepoint check, hence we are guaranteed to block
1323 // if this is called during a safepoint
1324
1325 if (JvmtiExport::should_post_single_step()) {
1326 // This function is called by the interpreter when single stepping. Such single
1327 // stepping could unwind a frame. Then, it is important that we process any frames
1328 // that we might return into.
1329 StackWatermarkSet::before_unwind(current);
1330
1331 // We are called during regular safepoints and when the VM is
1332 // single stepping. If any thread is marked for single stepping,
1333 // then we may have JVMTI work to do.
1334 LastFrameAccessor last_frame(current);
1335 JvmtiExport::at_single_stepping_point(current, last_frame.method(), last_frame.bcp());
1336 }
1337 JRT_END
1338
1339 JRT_LEAF_PROF(void, InterpreterRuntime, at_unwind, InterpreterRuntime::at_unwind(JavaThread* current))
1340 assert(current == JavaThread::current(), "pre-condition");
1341 JFR_ONLY(Jfr::check_and_process_sample_request(current);)
1342 // This function is called by the interpreter when the return poll found a reason
1343 // to call the VM. The reason could be that we are returning into a not yet safe
1344 // to access frame. We handle that below.
1345 // Note that this path does not check for single stepping, because we do not want
1346 // to single step when unwinding frames for an exception being thrown. Instead,
1347 // such single stepping code will use the safepoint table, which will use the
1348 // InterpreterRuntime::at_safepoint callback.
1349 StackWatermarkSet::before_unwind(current);
1350 JRT_END
1351
1352 JRT_ENTRY_PROF(void, InterpreterRuntime, post_field_access, InterpreterRuntime::post_field_access(JavaThread* current, oopDesc* obj,
1353 ResolvedFieldEntry *entry))
1354
1355 // check the access_flags for the field in the klass
1356
1357 InstanceKlass* ik = entry->field_holder();
1358 int index = entry->field_index();
1359 if (!ik->field_status(index).is_access_watched()) return;
1360
1361 bool is_static = (obj == nullptr);
1362 HandleMark hm(current);
1363
1364 Handle h_obj;
1365 if (!is_static) {
1366 // non-static field accessors have an object, but we need a handle
1367 h_obj = Handle(current, obj);
1368 }
1369 InstanceKlass* field_holder = entry->field_holder(); // HERE
1370 jfieldID fid = jfieldIDWorkaround::to_jfieldID(field_holder, entry->field_offset(), is_static);
1371 LastFrameAccessor last_frame(current);
1372 JvmtiExport::post_field_access(current, last_frame.method(), last_frame.bcp(), field_holder, h_obj, fid);
1373 JRT_END
1374
1375 JRT_ENTRY_PROF(void, InterpreterRuntime, post_field_modification, InterpreterRuntime::post_field_modification(JavaThread* current, oopDesc* obj,
1376 ResolvedFieldEntry *entry, jvalue *value))
1377
1378 InstanceKlass* ik = entry->field_holder();
1379
1380 // check the access_flags for the field in the klass
1381 int index = entry->field_index();
1382 // bail out if field modifications are not watched
1383 if (!ik->field_status(index).is_modification_watched()) return;
1384
1385 char sig_type = '\0';
1386
1387 switch((TosState)entry->tos_state()) {
1388 case btos: sig_type = JVM_SIGNATURE_BYTE; break;
1389 case ztos: sig_type = JVM_SIGNATURE_BOOLEAN; break;
1390 case ctos: sig_type = JVM_SIGNATURE_CHAR; break;
1391 case stos: sig_type = JVM_SIGNATURE_SHORT; break;
1392 case itos: sig_type = JVM_SIGNATURE_INT; break;
1393 case ftos: sig_type = JVM_SIGNATURE_FLOAT; break;
1394 case atos: sig_type = JVM_SIGNATURE_CLASS; break;
1395 case ltos: sig_type = JVM_SIGNATURE_LONG; break;
1396 case dtos: sig_type = JVM_SIGNATURE_DOUBLE; break;
1411 // We assume that the two halves of longs/doubles are stored in interpreter
1412 // stack slots in platform-endian order.
1413 jlong_accessor u;
1414 jint* newval = (jint*)value;
1415 u.words[0] = newval[0];
1416 u.words[1] = newval[Interpreter::stackElementWords]; // skip if tag
1417 fvalue.j = u.long_value;
1418 #endif // _LP64
1419
1420 Handle h_obj;
1421 if (!is_static) {
1422 // non-static field accessors have an object, but we need a handle
1423 h_obj = Handle(current, obj);
1424 }
1425
1426 LastFrameAccessor last_frame(current);
1427 JvmtiExport::post_raw_field_modification(current, last_frame.method(), last_frame.bcp(), ik, h_obj,
1428 fid, sig_type, &fvalue);
1429 JRT_END
1430
1431 JRT_ENTRY_PROF(void, InterpreterRuntime, post_method_entry, InterpreterRuntime::post_method_entry(JavaThread* current))
1432 LastFrameAccessor last_frame(current);
1433 JvmtiExport::post_method_entry(current, last_frame.method(), last_frame.get_frame());
1434 JRT_END
1435
1436
1437 // This is a JRT_BLOCK_ENTRY because we have to stash away the return oop
1438 // before transitioning to VM, and restore it after transitioning back
1439 // to Java. The return oop at the top-of-stack, is not walked by the GC.
1440 JRT_BLOCK_ENTRY_PROF(void, InterpreterRuntime, post_method_exit, InterpreterRuntime::post_method_exit(JavaThread* current))
1441 LastFrameAccessor last_frame(current);
1442 JvmtiExport::post_method_exit(current, last_frame.method(), last_frame.get_frame());
1443 JRT_END
1444
1445 JRT_LEAF_PROF_NO_THREAD(int, InterpreterRuntime, interpreter_contains, InterpreterRuntime::interpreter_contains(address pc))
1446 {
1447 return (Interpreter::contains(Continuation::get_top_return_pc_post_barrier(JavaThread::current(), pc)) ? 1 : 0);
1448 }
1449 JRT_END
1450
1451
1452 // Implementation of SignatureHandlerLibrary
1453
1454 #ifndef SHARING_FAST_NATIVE_FINGERPRINTS
1455 // Dummy definition (else normalization method is defined in CPU
1456 // dependent code)
1457 uint64_t InterpreterRuntime::normalize_fast_native_fingerprint(uint64_t fingerprint) {
1458 return fingerprint;
1459 }
1460 #endif
1461
1462 address SignatureHandlerLibrary::set_handler_blob() {
1463 BufferBlob* handler_blob = BufferBlob::create("native signature handlers", blob_size);
1464 if (handler_blob == nullptr) {
1465 return nullptr;
1591 MutexLocker mu(SignatureHandlerLibrary_lock);
1592 if (_handlers != nullptr) {
1593 handler_index = _handlers->find(method->signature_handler());
1594 uint64_t fingerprint = Fingerprinter(method).fingerprint();
1595 fingerprint = InterpreterRuntime::normalize_fast_native_fingerprint(fingerprint);
1596 fingerprint_index = _fingerprints->find(fingerprint);
1597 }
1598 }
1599 assert(method->signature_handler() == Interpreter::slow_signature_handler() ||
1600 handler_index == fingerprint_index, "sanity check");
1601 #endif // ASSERT
1602 }
1603
1604 BufferBlob* SignatureHandlerLibrary::_handler_blob = nullptr;
1605 address SignatureHandlerLibrary::_handler = nullptr;
1606 GrowableArray<uint64_t>* SignatureHandlerLibrary::_fingerprints = nullptr;
1607 GrowableArray<address>* SignatureHandlerLibrary::_handlers = nullptr;
1608 address SignatureHandlerLibrary::_buffer = nullptr;
1609
1610
1611 JRT_ENTRY_PROF(void, InterpreterRuntime, prepare_native_call, InterpreterRuntime::prepare_native_call(JavaThread* current, Method* method))
1612 methodHandle m(current, method);
1613 assert(m->is_native(), "sanity check");
1614 // lookup native function entry point if it doesn't exist
1615 if (!m->has_native_function()) {
1616 NativeLookup::lookup(m, CHECK);
1617 }
1618 // make sure signature handler is installed
1619 SignatureHandlerLibrary::add(m);
1620 // The interpreter entry point checks the signature handler first,
1621 // before trying to fetch the native entry point and klass mirror.
1622 // We must set the signature handler last, so that multiple processors
1623 // preparing the same method will be sure to see non-null entry & mirror.
1624 JRT_END
1625
1626 #if defined(IA32) || defined(AMD64) || defined(ARM)
1627 JRT_LEAF(void, InterpreterRuntime::popframe_move_outgoing_args(JavaThread* current, void* src_address, void* dest_address))
1628 assert(current == JavaThread::current(), "pre-condition");
1629 if (src_address == dest_address) {
1630 return;
1631 }
1632 ResourceMark rm;
1633 LastFrameAccessor last_frame(current);
1634 assert(last_frame.is_interpreted_frame(), "");
1635 jint bci = last_frame.bci();
1636 methodHandle mh(current, last_frame.method());
1637 Bytecode_invoke invoke(mh, bci);
1638 ArgumentSizeComputer asc(invoke.signature());
1639 int size_of_arguments = (asc.size() + (invoke.has_receiver() ? 1 : 0)); // receiver
1640 Copy::conjoint_jbytes(src_address, dest_address,
1641 size_of_arguments * Interpreter::stackElementSize);
1642 JRT_END
1643 #endif
1644
1645 #if INCLUDE_JVMTI
1646 // This is a support of the JVMTI PopFrame interface.
1647 // Make sure it is an invokestatic of a polymorphic intrinsic that has a member_name argument
1648 // and return it as a vm_result_oop so that it can be reloaded in the list of invokestatic parameters.
1649 // The member_name argument is a saved reference (in local#0) to the member_name.
1650 // For backward compatibility with some JDK versions (7, 8) it can also be a direct method handle.
1651 // FIXME: remove DMH case after j.l.i.InvokerBytecodeGenerator code shape is updated.
1652 JRT_ENTRY_PROF(void, InterpreterRuntime, member_name_arg_or_null,
1653 InterpreterRuntime::member_name_arg_or_null(JavaThread* current, address member_name,
1654 Method* method, address bcp))
1655 Bytecodes::Code code = Bytecodes::code_at(method, bcp);
1656 if (code != Bytecodes::_invokestatic) {
1657 return;
1658 }
1659 ConstantPool* cpool = method->constants();
1660 int cp_index = Bytes::get_native_u2(bcp + 1);
1661 Symbol* cname = cpool->klass_name_at(cpool->klass_ref_index_at(cp_index, code));
1662 Symbol* mname = cpool->name_ref_at(cp_index, code);
1663
1664 if (MethodHandles::has_member_arg(cname, mname)) {
1665 oop member_name_oop = cast_to_oop(member_name);
1666 if (java_lang_invoke_DirectMethodHandle::is_instance(member_name_oop)) {
1667 // FIXME: remove after j.l.i.InvokerBytecodeGenerator code shape is updated.
1668 member_name_oop = java_lang_invoke_DirectMethodHandle::member(member_name_oop);
1669 }
1670 current->set_vm_result_oop(member_name_oop);
1671 } else {
1672 current->set_vm_result_oop(nullptr);
1673 }
1674 JRT_END
1675 #endif // INCLUDE_JVMTI
1676
1677 #ifndef PRODUCT
1678 // This must be a JRT_LEAF function because the interpreter must save registers on x86 to
1679 // call this, which changes rsp and makes the interpreter's expression stack not walkable.
1680 // The generated code still uses call_VM because that will set up the frame pointer for
1681 // bcp and method.
1682 JRT_LEAF(intptr_t, InterpreterRuntime::trace_bytecode(JavaThread* current, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2))
1683 assert(current == JavaThread::current(), "pre-condition");
1684 LastFrameAccessor last_frame(current);
1685 assert(last_frame.is_interpreted_frame(), "must be an interpreted frame");
1686 methodHandle mh(current, last_frame.method());
1687 BytecodeTracer::trace_interpreter(mh, last_frame.bcp(), tos, tos2);
1688 return preserve_this_value;
1689 JRT_END
1690 #endif // !PRODUCT
1691
1692 #define DO_COUNTERS(macro) \
1693 macro(InterpreterRuntime, ldc) \
1694 macro(InterpreterRuntime, resolve_ldc) \
1695 macro(InterpreterRuntime, new) \
1696 macro(InterpreterRuntime, newarray) \
1697 macro(InterpreterRuntime, anewarray) \
1698 macro(InterpreterRuntime, multianewarray) \
1699 macro(InterpreterRuntime, register_finalizer) \
1700 macro(InterpreterRuntime, quicken_io_cc) \
1701 macro(InterpreterRuntime, throw_StackOverflowError) \
1702 macro(InterpreterRuntime, throw_delayed_StackOverflowError) \
1703 macro(InterpreterRuntime, create_exception) \
1704 macro(InterpreterRuntime, create_klass_exception) \
1705 macro(InterpreterRuntime, throw_ArrayIndexOutOfBoundsException) \
1706 macro(InterpreterRuntime, throw_ClassCastException) \
1707 macro(InterpreterRuntime, exception_handler_for_exception) \
1708 macro(InterpreterRuntime, throw_pending_exception) \
1709 macro(InterpreterRuntime, throw_AbstractMethodError) \
1710 macro(InterpreterRuntime, throw_AbstractMethodErrorWithMethod) \
1711 macro(InterpreterRuntime, throw_AbstractMethodErrorVerbose) \
1712 macro(InterpreterRuntime, throw_IncompatibleClassChangeError) \
1713 macro(InterpreterRuntime, throw_IncompatibleClassChangeErrorVerbose) \
1714 macro(InterpreterRuntime, throw_NullPointerException) \
1715 macro(InterpreterRuntime, monitorenter) \
1716 macro(InterpreterRuntime, monitorexit) \
1717 macro(InterpreterRuntime, throw_illegal_monitor_state_exception) \
1718 macro(InterpreterRuntime, new_illegal_monitor_state_exception) \
1719 macro(InterpreterRuntime, get_original_bytecode_at) \
1720 macro(InterpreterRuntime, set_original_bytecode_at) \
1721 macro(InterpreterRuntime, breakpoint) \
1722 macro(InterpreterRuntime, resolve_getfield) \
1723 macro(InterpreterRuntime, resolve_putfield) \
1724 macro(InterpreterRuntime, resolve_getstatic) \
1725 macro(InterpreterRuntime, resolve_putstatic) \
1726 macro(InterpreterRuntime, resolve_invokevirtual) \
1727 macro(InterpreterRuntime, resolve_invokespecial) \
1728 macro(InterpreterRuntime, resolve_invokestatic) \
1729 macro(InterpreterRuntime, resolve_invokeinterface) \
1730 macro(InterpreterRuntime, resolve_invokehandle) \
1731 macro(InterpreterRuntime, resolve_invokedynamic) \
1732 macro(InterpreterRuntime, frequency_counter_overflow) \
1733 macro(InterpreterRuntime, bcp_to_di) \
1734 macro(InterpreterRuntime, update_mdp_for_ret) \
1735 macro(InterpreterRuntime, build_method_counters) \
1736 macro(InterpreterRuntime, at_safepoint) \
1737 macro(InterpreterRuntime, at_unwind) \
1738 macro(InterpreterRuntime, post_field_access) \
1739 macro(InterpreterRuntime, post_field_modification) \
1740 macro(InterpreterRuntime, post_method_entry) \
1741 macro(InterpreterRuntime, post_method_exit) \
1742 macro(InterpreterRuntime, interpreter_contains) \
1743 macro(InterpreterRuntime, prepare_native_call)
1744
1745 #if INCLUDE_JVMTI
1746 #define DO_JVMTI_COUNTERS(macro) \
1747 macro(InterpreterRuntime, member_name_arg_or_null)
1748 #else
1749 #define DO_JVMTI_COUNTERS(macro)
1750 #endif /* INCLUDE_JVMTI */
1751
1752 #define INIT_COUNTER(sub, name) \
1753 NEWPERFTICKCOUNTERS(_perf_##sub##_##name##_timer, SUN_CI, #sub "::" #name); \
1754 NEWPERFEVENTCOUNTER(_perf_##sub##_##name##_count, SUN_CI, #sub "::" #name "_count");
1755
1756 void InterpreterRuntime::init_counters() {
1757 if (UsePerfData) {
1758 EXCEPTION_MARK;
1759
1760 DO_COUNTERS(INIT_COUNTER)
1761 DO_JVMTI_COUNTERS(INIT_COUNTER)
1762
1763 if (HAS_PENDING_EXCEPTION) {
1764 vm_exit_during_initialization("jvm_perf_init failed unexpectedly");
1765 }
1766 }
1767 }
1768 #undef INIT_COUNTER
1769
1770 #define PRINT_COUNTER(sub, name) { \
1771 jlong count = _perf_##sub##_##name##_count->get_value(); \
1772 if (count > 0) { \
1773 st->print_cr(" %-50s = " JLONG_FORMAT_W(6) "us (elapsed) " JLONG_FORMAT_W(6) "us (thread) (" JLONG_FORMAT_W(5) " events)", \
1774 #sub "::" #name, \
1775 _perf_##sub##_##name##_timer->elapsed_counter_value_us(), \
1776 _perf_##sub##_##name##_timer->thread_counter_value_us(), \
1777 count); \
1778 }}
1779
1780 void InterpreterRuntime::print_counters_on(outputStream* st) {
1781 if (UsePerfData && ProfileRuntimeCalls) {
1782 DO_COUNTERS(PRINT_COUNTER)
1783 DO_JVMTI_COUNTERS(PRINT_COUNTER)
1784 } else {
1785 st->print_cr(" InterpreterRuntime: no info (%s is disabled)", (UsePerfData ? "ProfileRuntimeCalls" : "UsePerfData"));
1786 }
1787 }
1788
1789 #undef PRINT_COUNTER
1790 #undef DO_JVMTI_COUNTERS
1791 #undef DO_COUNTERS
1792
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