19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/nmethod.hpp"
29 #include "compiler/compilationPolicy.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "interpreter/linkResolver.hpp"
33 #if INCLUDE_JVMCI
34 #include "jvmci/jvmciJavaClasses.hpp"
35 #endif
36 #include "memory/universe.hpp"
37 #include "oops/method.inline.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "prims/jniCheck.hpp"
40 #include "prims/jvmtiExport.hpp"
41 #include "runtime/handles.inline.hpp"
42 #include "runtime/interfaceSupport.inline.hpp"
43 #include "runtime/javaCalls.hpp"
44 #include "runtime/jniHandles.inline.hpp"
45 #include "runtime/mutexLocker.hpp"
46 #include "runtime/os.inline.hpp"
47 #include "runtime/sharedRuntime.hpp"
48 #include "runtime/signature.hpp"
49 #include "runtime/stubRoutines.hpp"
50 #include "runtime/thread.inline.hpp"
51
52 // -----------------------------------------------------
53 // Implementation of JavaCallWrapper
54
55 JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle receiver, JavaValue* result, TRAPS) {
56 JavaThread* thread = THREAD;
57
58 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code");
130
131 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
132 // If we get here, the Java code threw an exception that unwound a frame.
133 // It could be that the new frame anchor has not passed through the required
134 // StackWatermark barriers. Therefore, we process any such deferred unwind
135 // requests here.
136 StackWatermarkSet::after_unwind(_thread);
137 }
138 }
139
140
141 void JavaCallWrapper::oops_do(OopClosure* f) {
142 f->do_oop((oop*)&_receiver);
143 handles()->oops_do(f);
144 }
145
146
147 // Helper methods
148 static BasicType runtime_type_from(JavaValue* result) {
149 switch (result->get_type()) {
150 case T_BOOLEAN: // fall through
151 case T_CHAR : // fall through
152 case T_SHORT : // fall through
153 case T_INT : // fall through
154 #ifndef _LP64
155 case T_OBJECT : // fall through
156 case T_ARRAY : // fall through
157 #endif
158 case T_BYTE : // fall through
159 case T_VOID : return T_INT;
160 case T_LONG : return T_LONG;
161 case T_FLOAT : return T_FLOAT;
162 case T_DOUBLE : return T_DOUBLE;
163 #ifdef _LP64
164 case T_ARRAY : // fall through
165 case T_OBJECT: return T_OBJECT;
166 #endif
167 default:
168 ShouldNotReachHere();
169 return T_ILLEGAL;
170 }
171 }
172
173 // ============ Virtual calls ============
174
175 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
176 CallInfo callinfo;
177 Handle receiver = args->receiver();
178 Klass* recvrKlass = receiver.is_null() ? (Klass*)NULL : receiver->klass();
179 LinkInfo link_info(spec_klass, name, signature);
180 LinkResolver::resolve_virtual_call(
181 callinfo, receiver, recvrKlass, link_info, true, CHECK);
182 methodHandle method(THREAD, callinfo.selected_method());
183 assert(method.not_null(), "should have thrown exception");
184
185 // Invoke the method
273 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
274 JavaCallArguments args;
275 args.push_oop(arg1);
276 args.push_oop(arg2);
277 call_static(result, klass, name, signature, &args, CHECK);
278 }
279
280
281 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, Handle arg3, TRAPS) {
282 JavaCallArguments args;
283 args.push_oop(arg1);
284 args.push_oop(arg2);
285 args.push_oop(arg3);
286 call_static(result, klass, name, signature, &args, CHECK);
287 }
288
289 // ============ allocate and initialize new object instance ============
290
291 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, JavaCallArguments* args, TRAPS) {
292 klass->initialize(CHECK_NH); // Quick no-op if already initialized.
293 Handle obj = klass->allocate_instance_handle(CHECK_NH);
294 JavaValue void_result(T_VOID);
295 args->set_receiver(obj); // inserts <obj> as the first argument.
296 JavaCalls::call_special(&void_result, klass,
297 vmSymbols::object_initializer_name(),
298 constructor_signature, args, CHECK_NH);
299 // Already returned a Null Handle if any exception is pending.
300 return obj;
301 }
302
303 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, TRAPS) {
304 JavaCallArguments args;
305 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
306 }
307
308 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, TRAPS) {
309 JavaCallArguments args;
310 args.push_oop(arg1);
311 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
312 }
374 // Find receiver
375 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
376
377 // When we reenter Java, we need to reenable the reserved/yellow zone which
378 // might already be disabled when we are in VM.
379 thread->stack_overflow_state()->reguard_stack_if_needed();
380
381 // Check that there are shadow pages available before changing thread state
382 // to Java. Calculate current_stack_pointer here to make sure
383 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
384 address sp = os::current_stack_pointer();
385 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
386 // Throw stack overflow exception with preinitialized exception.
387 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
388 return;
389 } else {
390 // Touch pages checked if the OS needs them to be touched to be mapped.
391 os::map_stack_shadow_pages(sp);
392 }
393
394 // do call
395 { JavaCallWrapper link(method, receiver, result, CHECK);
396 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
397
398 // NOTE: if we move the computation of the result_val_address inside
399 // the call to call_stub, the optimizer produces wrong code.
400 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
401 intptr_t* parameter_address = args->parameters();
402 #if INCLUDE_JVMCI
403 // Gets the alternative target (if any) that should be called
404 Handle alternative_target = args->alternative_target();
405 if (!alternative_target.is_null()) {
406 // Must extract verified entry point from HotSpotNmethod after VM to Java
407 // transition in JavaCallWrapper constructor so that it is safe with
408 // respect to nmethod sweeping.
409 address verified_entry_point = (address) HotSpotJVMCI::InstalledCode::entryPoint(NULL, alternative_target());
410 if (verified_entry_point != NULL) {
411 thread->set_jvmci_alternate_call_target(verified_entry_point);
412 entry_point = method->adapter()->get_i2c_entry();
413 }
424 args->size_of_parameters(),
425 CHECK
426 );
427
428 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
429 // Preserve oop return value across possible gc points
430 if (oop_result_flag) {
431 thread->set_vm_result(result->get_oop());
432 }
433 }
434 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
435
436 // Check if a thread stop or suspend should be executed
437 // The following assert was not realistic. Thread.stop can set that bit at any moment.
438 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
439
440 // Restore possible oop return
441 if (oop_result_flag) {
442 result->set_oop(thread->vm_result());
443 thread->set_vm_result(NULL);
444 }
445 }
446
447
448 //--------------------------------------------------------------------------------------
449 // Implementation of JavaCallArguments
450
451 inline bool is_value_state_indirect_oop(uint state) {
452 assert(state != JavaCallArguments::value_state_oop,
453 "Checking for handles after removal");
454 assert(state < JavaCallArguments::value_state_limit,
455 "Invalid value state %u", state);
456 return state != JavaCallArguments::value_state_primitive;
457 }
458
459 inline oop resolve_indirect_oop(intptr_t value, uint state) {
460 switch (state) {
461 case JavaCallArguments::value_state_handle:
462 {
463 oop* ptr = reinterpret_cast<oop*>(value);
560 }
561
562 check_value(true); // Verify value state.
563 }
564
565 friend class SignatureIterator; // so do_parameters_on can call do_type
566 void do_type(BasicType type) {
567 switch (type) {
568 case T_BYTE:
569 case T_BOOLEAN:
570 case T_CHAR:
571 case T_SHORT:
572 case T_INT:
573 case T_FLOAT: // this one also
574 check_single_word(); break;
575 case T_LONG:
576 case T_DOUBLE:
577 check_double_word(); break;
578 case T_ARRAY:
579 case T_OBJECT:
580 check_reference(); break;
581 default:
582 ShouldNotReachHere();
583 }
584 }
585 };
586
587
588 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
589 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
590
591 // Treat T_OBJECT and T_ARRAY as the same
592 if (is_reference_type(return_type)) return_type = T_OBJECT;
593
594 // Check that oop information is correct
595 Symbol* signature = method->signature();
596
597 SignatureChekker sc(signature,
598 return_type,
599 method->is_static(),
600 _value_state,
601 _value);
602 }
|
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/nmethod.hpp"
29 #include "compiler/compilationPolicy.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "interpreter/interpreter.hpp"
32 #include "interpreter/linkResolver.hpp"
33 #if INCLUDE_JVMCI
34 #include "jvmci/jvmciJavaClasses.hpp"
35 #endif
36 #include "memory/universe.hpp"
37 #include "oops/method.inline.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "oops/inlineKlass.hpp"
40 #include "prims/jniCheck.hpp"
41 #include "prims/jvmtiExport.hpp"
42 #include "runtime/handles.inline.hpp"
43 #include "runtime/interfaceSupport.inline.hpp"
44 #include "runtime/javaCalls.hpp"
45 #include "runtime/jniHandles.inline.hpp"
46 #include "runtime/mutexLocker.hpp"
47 #include "runtime/os.inline.hpp"
48 #include "runtime/sharedRuntime.hpp"
49 #include "runtime/signature.hpp"
50 #include "runtime/stubRoutines.hpp"
51 #include "runtime/thread.inline.hpp"
52
53 // -----------------------------------------------------
54 // Implementation of JavaCallWrapper
55
56 JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle receiver, JavaValue* result, TRAPS) {
57 JavaThread* thread = THREAD;
58
59 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code");
131
132 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
133 // If we get here, the Java code threw an exception that unwound a frame.
134 // It could be that the new frame anchor has not passed through the required
135 // StackWatermark barriers. Therefore, we process any such deferred unwind
136 // requests here.
137 StackWatermarkSet::after_unwind(_thread);
138 }
139 }
140
141
142 void JavaCallWrapper::oops_do(OopClosure* f) {
143 f->do_oop((oop*)&_receiver);
144 handles()->oops_do(f);
145 }
146
147
148 // Helper methods
149 static BasicType runtime_type_from(JavaValue* result) {
150 switch (result->get_type()) {
151 case T_BOOLEAN : // fall through
152 case T_CHAR : // fall through
153 case T_SHORT : // fall through
154 case T_INT : // fall through
155 #ifndef _LP64
156 case T_OBJECT : // fall through
157 case T_ARRAY : // fall through
158 case T_PRIMITIVE_OBJECT: // fall through
159 #endif
160 case T_BYTE : // fall through
161 case T_VOID : return T_INT;
162 case T_LONG : return T_LONG;
163 case T_FLOAT : return T_FLOAT;
164 case T_DOUBLE : return T_DOUBLE;
165 #ifdef _LP64
166 case T_ARRAY : // fall through
167 case T_OBJECT : return T_OBJECT;
168 case T_PRIMITIVE_OBJECT: return T_PRIMITIVE_OBJECT;
169 #endif
170 default:
171 ShouldNotReachHere();
172 return T_ILLEGAL;
173 }
174 }
175
176 // ============ Virtual calls ============
177
178 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
179 CallInfo callinfo;
180 Handle receiver = args->receiver();
181 Klass* recvrKlass = receiver.is_null() ? (Klass*)NULL : receiver->klass();
182 LinkInfo link_info(spec_klass, name, signature);
183 LinkResolver::resolve_virtual_call(
184 callinfo, receiver, recvrKlass, link_info, true, CHECK);
185 methodHandle method(THREAD, callinfo.selected_method());
186 assert(method.not_null(), "should have thrown exception");
187
188 // Invoke the method
276 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
277 JavaCallArguments args;
278 args.push_oop(arg1);
279 args.push_oop(arg2);
280 call_static(result, klass, name, signature, &args, CHECK);
281 }
282
283
284 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, Handle arg3, TRAPS) {
285 JavaCallArguments args;
286 args.push_oop(arg1);
287 args.push_oop(arg2);
288 args.push_oop(arg3);
289 call_static(result, klass, name, signature, &args, CHECK);
290 }
291
292 // ============ allocate and initialize new object instance ============
293
294 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, JavaCallArguments* args, TRAPS) {
295 klass->initialize(CHECK_NH); // Quick no-op if already initialized.
296
297 // Special case for factory methods
298 if (!constructor_signature->is_void_method_signature()) {
299 assert(klass->is_inline_klass(), "inline classes must use factory methods");
300 JavaValue factory_result(T_OBJECT);
301 JavaCalls::call_static(&factory_result, klass,
302 vmSymbols::object_initializer_name(),
303 constructor_signature, args, CHECK_NH);
304 return Handle(THREAD, factory_result.get_oop());
305 }
306
307 // main branch of code creates a non-inline object:
308 assert(!klass->is_inline_klass(), "classic constructors are only for non-inline classes");
309 Handle obj = klass->allocate_instance_handle(CHECK_NH);
310 JavaValue void_result(T_VOID);
311 args->set_receiver(obj); // inserts <obj> as the first argument.
312 JavaCalls::call_special(&void_result, klass,
313 vmSymbols::object_initializer_name(),
314 constructor_signature, args, CHECK_NH);
315 // Already returned a Null Handle if any exception is pending.
316 return obj;
317 }
318
319 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, TRAPS) {
320 JavaCallArguments args;
321 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
322 }
323
324 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, TRAPS) {
325 JavaCallArguments args;
326 args.push_oop(arg1);
327 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
328 }
390 // Find receiver
391 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
392
393 // When we reenter Java, we need to reenable the reserved/yellow zone which
394 // might already be disabled when we are in VM.
395 thread->stack_overflow_state()->reguard_stack_if_needed();
396
397 // Check that there are shadow pages available before changing thread state
398 // to Java. Calculate current_stack_pointer here to make sure
399 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
400 address sp = os::current_stack_pointer();
401 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
402 // Throw stack overflow exception with preinitialized exception.
403 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
404 return;
405 } else {
406 // Touch pages checked if the OS needs them to be touched to be mapped.
407 os::map_stack_shadow_pages(sp);
408 }
409
410 jobject value_buffer = NULL;
411 if (InlineTypeReturnedAsFields && (result->get_type() == T_PRIMITIVE_OBJECT || result->get_type() == T_OBJECT)) {
412 // Pre allocate a buffered inline type in case the result is returned
413 // flattened by compiled code
414 InlineKlass* vk = method->returns_inline_type(thread);
415 if (vk != NULL && vk->can_be_returned_as_fields()) {
416 oop instance = vk->allocate_instance(CHECK);
417 value_buffer = JNIHandles::make_local(thread, instance);
418 result->set_jobject(value_buffer);
419 }
420 }
421
422 // do call
423 { JavaCallWrapper link(method, receiver, result, CHECK);
424 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
425
426 // NOTE: if we move the computation of the result_val_address inside
427 // the call to call_stub, the optimizer produces wrong code.
428 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
429 intptr_t* parameter_address = args->parameters();
430 #if INCLUDE_JVMCI
431 // Gets the alternative target (if any) that should be called
432 Handle alternative_target = args->alternative_target();
433 if (!alternative_target.is_null()) {
434 // Must extract verified entry point from HotSpotNmethod after VM to Java
435 // transition in JavaCallWrapper constructor so that it is safe with
436 // respect to nmethod sweeping.
437 address verified_entry_point = (address) HotSpotJVMCI::InstalledCode::entryPoint(NULL, alternative_target());
438 if (verified_entry_point != NULL) {
439 thread->set_jvmci_alternate_call_target(verified_entry_point);
440 entry_point = method->adapter()->get_i2c_entry();
441 }
452 args->size_of_parameters(),
453 CHECK
454 );
455
456 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
457 // Preserve oop return value across possible gc points
458 if (oop_result_flag) {
459 thread->set_vm_result(result->get_oop());
460 }
461 }
462 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
463
464 // Check if a thread stop or suspend should be executed
465 // The following assert was not realistic. Thread.stop can set that bit at any moment.
466 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
467
468 // Restore possible oop return
469 if (oop_result_flag) {
470 result->set_oop(thread->vm_result());
471 thread->set_vm_result(NULL);
472 JNIHandles::destroy_local(value_buffer);
473 }
474 }
475
476
477 //--------------------------------------------------------------------------------------
478 // Implementation of JavaCallArguments
479
480 inline bool is_value_state_indirect_oop(uint state) {
481 assert(state != JavaCallArguments::value_state_oop,
482 "Checking for handles after removal");
483 assert(state < JavaCallArguments::value_state_limit,
484 "Invalid value state %u", state);
485 return state != JavaCallArguments::value_state_primitive;
486 }
487
488 inline oop resolve_indirect_oop(intptr_t value, uint state) {
489 switch (state) {
490 case JavaCallArguments::value_state_handle:
491 {
492 oop* ptr = reinterpret_cast<oop*>(value);
589 }
590
591 check_value(true); // Verify value state.
592 }
593
594 friend class SignatureIterator; // so do_parameters_on can call do_type
595 void do_type(BasicType type) {
596 switch (type) {
597 case T_BYTE:
598 case T_BOOLEAN:
599 case T_CHAR:
600 case T_SHORT:
601 case T_INT:
602 case T_FLOAT: // this one also
603 check_single_word(); break;
604 case T_LONG:
605 case T_DOUBLE:
606 check_double_word(); break;
607 case T_ARRAY:
608 case T_OBJECT:
609 case T_PRIMITIVE_OBJECT:
610 check_reference(); break;
611 default:
612 ShouldNotReachHere();
613 }
614 }
615 };
616
617
618 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
619 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
620
621 // Treat T_OBJECT and T_ARRAY as the same
622 if (return_type == T_ARRAY) return_type = T_OBJECT;
623
624 // Check that oop information is correct
625 Symbol* signature = method->signature();
626
627 SignatureChekker sc(signature,
628 return_type,
629 method->is_static(),
630 _value_state,
631 _value);
632 }
|