1 /*
2 * Copyright (c) 1997, 2026, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2021, Azul Systems, Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 "classfile/vmSymbols.hpp"
27 #include "code/nmethod.hpp"
28 #include "compiler/compilationPolicy.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "interpreter/interpreter.hpp"
31 #include "interpreter/linkResolver.hpp"
32 #include "memory/universe.hpp"
33 #include "oops/inlineKlass.hpp"
34 #include "oops/method.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "prims/jniCheck.hpp"
37 #include "prims/jvmtiExport.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/interfaceSupport.inline.hpp"
40 #include "runtime/javaCalls.hpp"
41 #include "runtime/javaThread.hpp"
42 #include "runtime/jniHandles.inline.hpp"
43 #include "runtime/mutexLocker.hpp"
44 #include "runtime/os.inline.hpp"
45 #include "runtime/sharedRuntime.hpp"
46 #include "runtime/signature.hpp"
47 #include "runtime/stubRoutines.hpp"
48 #include "runtime/thread.inline.hpp"
49 #if INCLUDE_JVMCI
50 #include "jvmci/jvmciJavaClasses.hpp"
51 #endif
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");
60 assert(!thread->owns_locks(), "must release all locks when leaving VM");
61 guarantee(thread->can_call_java(), "cannot make java calls from the native compiler");
62 assert(!thread->preempting(), "Unexpected Java upcall whilst processing preemption");
63 _result = result;
64
65 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub,
66 // since it can potentially block.
67 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
68
69 // clear any pending exception in thread (native calls start with no exception pending)
70 thread->clear_pending_exception();
71
72 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local
73 // info, since we cannot find oops before the new information is set up completely.
74 ThreadStateTransition::transition_from_vm(thread, _thread_in_Java, true /* check_asyncs */);
75
76 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing
77 // the JavaCallWrapper before the entry frame is on the stack.
78 _callee_method = callee_method();
79 _receiver = receiver();
80
81 #ifdef CHECK_UNHANDLED_OOPS
82 THREAD->allow_unhandled_oop(&_receiver);
83 #endif // CHECK_UNHANDLED_OOPS
84
85 _thread = thread;
86 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage
87
88 // For the profiler, the last_Java_frame information in thread must always be in
89 // legal state. We have no last Java frame if last_Java_sp == nullptr so
90 // the valid transition is to clear _last_Java_sp and then reset the rest of
91 // the (platform specific) state.
92
93 _anchor.copy(_thread->frame_anchor());
94 _thread->frame_anchor()->clear();
95
96 DEBUG_ONLY(_thread->inc_java_call_counter());
97 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage
98 }
99
100
101 JavaCallWrapper::~JavaCallWrapper() {
102 assert(_thread == JavaThread::current(), "must still be the same thread");
103
104 // restore previous handle block & Java frame linkage
105 JNIHandleBlock *_old_handles = _thread->active_handles();
106 _thread->set_active_handles(_handles);
107
108 _thread->frame_anchor()->zap();
109
110 DEBUG_ONLY(_thread->dec_java_call_counter());
111
112 // Old thread-local info. has been restored. We are not back in the VM.
113 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm);
114
115 // State has been restored now make the anchor frame visible for the profiler.
116 _thread->frame_anchor()->copy(&_anchor);
117
118 // Release handles after we are marked as being inside the VM again, since this
119 // operation might block
120 JNIHandleBlock::release_block(_old_handles, _thread);
121
122 if (_thread->has_pending_exception() && _thread->has_last_Java_frame()) {
123 // If we get here, the Java code threw an exception that unwound a frame.
124 // It could be that the new frame anchor has not passed through the required
125 // StackWatermark barriers. Therefore, we process any such deferred unwind
126 // requests here.
127 StackWatermarkSet::after_unwind(_thread);
128 }
129 }
130
131
132 void JavaCallWrapper::oops_do(OopClosure* f) {
133 f->do_oop((oop*)&_receiver);
134 handles()->oops_do(f);
135 }
136
137
138 // Helper methods
139 static BasicType runtime_type_from(JavaValue* result) {
140 switch (result->get_type()) {
141 case T_BOOLEAN : // fall through
142 case T_CHAR : // fall through
143 case T_SHORT : // fall through
144 case T_INT : // fall through
145 #ifndef _LP64
146 case T_OBJECT : // fall through
147 case T_ARRAY : // fall through
148 case T_FLAT_ELEMENT: // fall through
149 #endif
150 case T_BYTE : // fall through
151 case T_VOID : return T_INT;
152 case T_LONG : return T_LONG;
153 case T_FLOAT : return T_FLOAT;
154 case T_DOUBLE : return T_DOUBLE;
155 #ifdef _LP64
156 case T_ARRAY : // fall through
157 case T_OBJECT : return T_OBJECT;
158 #endif
159 default:
160 ShouldNotReachHere();
161 return T_ILLEGAL;
162 }
163 }
164
165 // ============ Virtual calls ============
166
167 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
168 CallInfo callinfo;
169 Handle receiver = args->receiver();
170 Klass* recvrKlass = receiver.is_null() ? (Klass*)nullptr : receiver->klass();
171 LinkInfo link_info(spec_klass, name, signature);
172 LinkResolver::resolve_virtual_call(
173 callinfo, receiver, recvrKlass, link_info, true, CHECK);
174 methodHandle method(THREAD, callinfo.selected_method());
175 assert(method.not_null(), "should have thrown exception");
176
177 // Invoke the method
178 JavaCalls::call(result, method, args, CHECK);
179 }
180
181
182 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, TRAPS) {
183 JavaCallArguments args(receiver);
184 call_virtual(result, spec_klass, name, signature, &args, CHECK);
185 }
186
187
188 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) {
189 JavaCallArguments args(receiver);
190 args.push_oop(arg1);
191 call_virtual(result, spec_klass, name, signature, &args, CHECK);
192 }
193
194
195
196 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
197 JavaCallArguments args(receiver);
198 args.push_oop(arg1);
199 args.push_oop(arg2);
200 call_virtual(result, spec_klass, name, signature, &args, CHECK);
201 }
202
203
204 // ============ Special calls ============
205
206 void JavaCalls::call_special(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
207 CallInfo callinfo;
208 LinkInfo link_info(klass, name, signature);
209 LinkResolver::resolve_special_call(callinfo, args->receiver(), link_info, CHECK);
210 methodHandle method(THREAD, callinfo.selected_method());
211 assert(method.not_null(), "should have thrown exception");
212
213 // Invoke the method
214 JavaCalls::call(result, method, args, CHECK);
215 }
216
217
218 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, TRAPS) {
219 JavaCallArguments args(receiver);
220 call_special(result, klass, name, signature, &args, CHECK);
221 }
222
223
224 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) {
225 JavaCallArguments args(receiver);
226 args.push_oop(arg1);
227 call_special(result, klass, name, signature, &args, CHECK);
228 }
229
230
231 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
232 JavaCallArguments args(receiver);
233 args.push_oop(arg1);
234 args.push_oop(arg2);
235 call_special(result, klass, name, signature, &args, CHECK);
236 }
237
238
239 // ============ Static calls ============
240
241 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
242 CallInfo callinfo;
243 LinkInfo link_info(klass, name, signature);
244 LinkResolver::resolve_static_call(callinfo, link_info, ClassInitMode::init, CHECK);
245 methodHandle method(THREAD, callinfo.selected_method());
246 assert(method.not_null(), "should have thrown exception");
247
248 // Invoke the method
249 JavaCalls::call(result, method, args, CHECK);
250 }
251
252
253 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, TRAPS) {
254 JavaCallArguments args;
255 call_static(result, klass, name, signature, &args, CHECK);
256 }
257
258
259 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) {
260 JavaCallArguments args(arg1);
261 call_static(result, klass, name, signature, &args, CHECK);
262 }
263
264
265 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
266 JavaCallArguments args;
267 args.push_oop(arg1);
268 args.push_oop(arg2);
269 call_static(result, klass, name, signature, &args, CHECK);
270 }
271
272
273 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, Handle arg3, TRAPS) {
274 JavaCallArguments args;
275 args.push_oop(arg1);
276 args.push_oop(arg2);
277 args.push_oop(arg3);
278 call_static(result, klass, name, signature, &args, CHECK);
279 }
280
281 // ============ allocate and initialize new object instance ============
282
283 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, JavaCallArguments* args, TRAPS) {
284 klass->initialize(CHECK_NH); // Quick no-op if already initialized.
285 Handle obj = klass->allocate_instance_handle(CHECK_NH);
286 JavaValue void_result(T_VOID);
287 args->set_receiver(obj); // inserts <obj> as the first argument.
288 JavaCalls::call_special(&void_result, klass,
289 vmSymbols::object_initializer_name(),
290 constructor_signature, args, CHECK_NH);
291 // Already returned a Null Handle if any exception is pending.
292 return obj;
293 }
294
295 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, TRAPS) {
296 JavaCallArguments args;
297 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
298 }
299
300 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, TRAPS) {
301 JavaCallArguments args;
302 args.push_oop(arg1);
303 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
304 }
305
306 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, Handle arg2, TRAPS) {
307 JavaCallArguments args;
308 args.push_oop(arg1);
309 args.push_oop(arg2);
310 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
311 }
312
313 // -------------------------------------------------
314 // Implementation of JavaCalls (low level)
315
316
317 void JavaCalls::call(JavaValue* result, const methodHandle& method, JavaCallArguments* args, TRAPS) {
318 // Check if we need to wrap a potential OS exception handler around thread.
319 // This is used for e.g. Win32 structured exception handlers.
320 // Need to wrap each and every time, since there might be native code down the
321 // stack that has installed its own exception handlers.
322 os::os_exception_wrapper(call_helper, result, method, args, THREAD);
323 }
324
325 void JavaCalls::call_helper(JavaValue* result, const methodHandle& method, JavaCallArguments* args, TRAPS) {
326
327 JavaThread* thread = THREAD;
328 assert(method.not_null(), "must have a method to call");
329 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation");
330 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here");
331
332 // Verify the arguments
333 if (JVMCI_ONLY(args->alternative_target().is_null() &&) (DEBUG_ONLY(true ||) CheckJNICalls)) {
334 args->verify(method, result->get_type());
335 }
336 // Ignore call if method is empty
337 if (JVMCI_ONLY(args->alternative_target().is_null() &&) method->is_empty_method()) {
338 assert(result->get_type() == T_VOID, "an empty method must return a void value");
339 return;
340 }
341
342 #ifdef ASSERT
343 { InstanceKlass* holder = method->method_holder();
344 // A klass might not be initialized since JavaCall's might be used during the executing of
345 // the <clinit>. For example, a Thread.start might start executing on an object that is
346 // not fully initialized! (bad Java programming style)
347 assert(holder->is_linked(), "rewriting must have taken place");
348 }
349 #endif
350
351 CompilationPolicy::compile_if_required(method, CHECK);
352
353 // Figure out if the result value is an oop or not (Note: This is a different value
354 // than result_type. result_type will be T_INT of oops. (it is about size)
355 BasicType result_type = runtime_type_from(result);
356 bool oop_result_flag = is_reference_type(result->get_type());
357
358 // Find receiver
359 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
360
361 // When we reenter Java, we need to re-enable the reserved/yellow zone which
362 // might already be disabled when we are in VM.
363 thread->stack_overflow_state()->reguard_stack_if_needed();
364
365 // Check that there are shadow pages available before changing thread state
366 // to Java. Calculate current_stack_pointer here to make sure
367 // stack_shadow_pages_available() and map_stack_shadow_pages() use the same sp.
368 address sp = os::current_stack_pointer();
369 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
370 // Throw stack overflow exception with preinitialized exception.
371 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
372 return;
373 } else {
374 // Touch pages checked if the OS needs them to be touched to be mapped.
375 os::map_stack_shadow_pages(sp);
376 }
377
378 jobject value_buffer = nullptr;
379 if (InlineTypeReturnedAsFields && (result->get_type() == T_OBJECT)) {
380 // Pre allocate a buffered inline type in case the result is returned
381 // flattened by compiled code
382 InlineKlass* vk = method->returns_inline_type();
383 if (vk != nullptr && vk->can_be_returned_as_fields()) {
384 oop instance = vk->allocate_instance(CHECK);
385 value_buffer = JNIHandles::make_local(thread, instance);
386 result->set_jobject(value_buffer);
387 }
388 }
389
390 // do call
391 { JavaCallWrapper link(method, receiver, result, CHECK);
392 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
393
394 // NOTE: if we move the computation of the result_val_address inside
395 // the call to call_stub, the optimizer produces wrong code.
396 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
397 intptr_t* parameter_address = args->parameters();
398
399 address entry_point;
400 {
401 // The enter_interp_only_mode use handshake to set interp_only mode
402 // so no safepoint should be allowed between is_interp_only_mode() and call
403 NoSafepointVerifier nsv;
404 bool is_interp_only_mode = (StressCallingConvention && (os::random() % (1 << 10)) == 0) || thread->is_interp_only_mode();
405 if (JvmtiExport::can_post_interpreter_events() && is_interp_only_mode) {
406 entry_point = method->interpreter_entry();
407 } else {
408 // Since the call stub sets up like the interpreter we call the from_interpreted_entry
409 // so we can go compiled via a i2c.
410 entry_point = method->from_interpreted_entry();
411 #if INCLUDE_JVMCI
412 // Gets the alternative target (if any) that should be called
413 Handle alternative_target = args->alternative_target();
414 if (!alternative_target.is_null()) {
415 // Must extract verified entry point from HotSpotNmethod after VM to Java
416 // transition in JavaCallWrapper constructor so that it is safe with
417 // respect to nmethod sweeping.
418 address verified_entry_point = (address) HotSpotJVMCI::InstalledCode::entryPoint(nullptr, alternative_target());
419 if (verified_entry_point != nullptr) {
420 thread->set_jvmci_alternate_call_target(verified_entry_point);
421 entry_point = method->get_i2c_entry();
422 }
423 }
424 #endif
425 }
426 }
427 {
428 MACOS_AARCH64_ONLY(ThreadWXEnable wx(WXExec, thread));
429 StubRoutines::call_stub()(
430 (address)&link,
431 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem)
432 result_val_address, // see NOTE above (compiler problem)
433 result_type,
434 method(),
435 entry_point,
436 parameter_address,
437 args->size_of_parameters(),
438 CHECK
439 );
440 }
441
442 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
443 // Preserve oop return value across possible gc points
444 if (oop_result_flag) {
445 thread->set_vm_result_oop(result->get_oop());
446 }
447 }
448 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
449
450 // Check if a thread stop or suspend should be executed
451 // The following assert was not realistic. Thread.stop can set that bit at any moment.
452 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
453
454 // Restore possible oop return
455 if (oop_result_flag) {
456 result->set_oop(thread->vm_result_oop());
457 thread->set_vm_result_oop(nullptr);
458 JNIHandles::destroy_local(value_buffer);
459 }
460 }
461
462
463 //--------------------------------------------------------------------------------------
464 // Implementation of JavaCallArguments
465
466 inline bool is_value_state_indirect_oop(uint state) {
467 assert(state != JavaCallArguments::value_state_oop,
468 "Checking for handles after removal");
469 assert(state < JavaCallArguments::value_state_limit,
470 "Invalid value state %u", state);
471 return state != JavaCallArguments::value_state_primitive;
472 }
473
474 inline oop resolve_indirect_oop(intptr_t value, uint state) {
475 switch (state) {
476 case JavaCallArguments::value_state_handle:
477 {
478 oop* ptr = reinterpret_cast<oop*>(value);
479 return Handle::raw_resolve(ptr);
480 }
481
482 case JavaCallArguments::value_state_jobject:
483 {
484 jobject obj = reinterpret_cast<jobject>(value);
485 return JNIHandles::resolve(obj);
486 }
487
488 default:
489 ShouldNotReachHere();
490 return nullptr;
491 }
492 }
493
494 intptr_t* JavaCallArguments::parameters() {
495 // First convert all handles to oops
496 for(int i = 0; i < _size; i++) {
497 uint state = _value_state[i];
498 assert(state != value_state_oop, "Multiple handle conversions");
499 if (is_value_state_indirect_oop(state)) {
500 oop obj = resolve_indirect_oop(_value[i], state);
501 _value[i] = cast_from_oop<intptr_t>(obj);
502 _value_state[i] = value_state_oop;
503 }
504 }
505 // Return argument vector
506 return _value;
507 }
508
509
510 class SignatureChekker : public SignatureIterator {
511 private:
512 int _pos;
513 BasicType _return_type;
514 u_char* _value_state;
515 intptr_t* _value;
516
517 public:
518 SignatureChekker(Symbol* signature,
519 BasicType return_type,
520 bool is_static,
521 u_char* value_state,
522 intptr_t* value) :
523 SignatureIterator(signature),
524 _pos(0),
525 _return_type(return_type),
526 _value_state(value_state),
527 _value(value)
528 {
529 if (!is_static) {
530 check_value(true); // Receiver must be an oop
531 }
532 do_parameters_on(this);
533 check_return_type(return_type);
534 }
535
536 private:
537 void check_value(bool is_reference) {
538 uint state = _value_state[_pos++];
539 if (is_reference) {
540 guarantee(is_value_state_indirect_oop(state),
541 "signature does not match pushed arguments: %u at %d",
542 state, _pos - 1);
543 } else {
544 guarantee(state == JavaCallArguments::value_state_primitive,
545 "signature does not match pushed arguments: %u at %d",
546 state, _pos - 1);
547 }
548 }
549
550 void check_return_type(BasicType t) {
551 guarantee(t == _return_type, "return type does not match");
552 }
553
554 void check_single_word() {
555 check_value(false);
556 }
557
558 void check_double_word() {
559 check_value(false);
560 check_value(false);
561 }
562
563 void check_reference() {
564 intptr_t v = _value[_pos];
565 if (v != 0) {
566 // v is a "handle" referring to an oop, cast to integral type.
567 // There shouldn't be any handles in very low memory.
568 guarantee((size_t)v >= os::vm_page_size(),
569 "Bad JNI oop argument %d: " PTR_FORMAT, _pos, v);
570 // Verify the pointee.
571 oop vv = resolve_indirect_oop(v, _value_state[_pos]);
572 guarantee(oopDesc::is_oop_or_null(vv),
573 "Bad JNI oop argument %d: " PTR_FORMAT " -> " PTR_FORMAT,
574 _pos, v, p2i(vv));
575 }
576
577 check_value(true); // Verify value state.
578 }
579
580 friend class SignatureIterator; // so do_parameters_on can call do_type
581 void do_type(BasicType type) {
582 switch (type) {
583 case T_BYTE:
584 case T_BOOLEAN:
585 case T_CHAR:
586 case T_SHORT:
587 case T_INT:
588 case T_FLOAT: // this one also
589 check_single_word(); break;
590 case T_LONG:
591 case T_DOUBLE:
592 check_double_word(); break;
593 case T_ARRAY:
594 case T_OBJECT:
595 check_reference(); break;
596 default:
597 ShouldNotReachHere();
598 }
599 }
600 };
601
602
603 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
604 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
605
606 // Treat T_OBJECT and T_ARRAY as the same
607 if (return_type == T_ARRAY) return_type = T_OBJECT;
608
609 // Check that oop information is correct
610 Symbol* signature = method->signature();
611
612 SignatureChekker sc(signature,
613 return_type,
614 method->is_static(),
615 _value_state,
616 _value);
617 }