1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "code/nmethod.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "interpreter/interpreter.hpp"
31 #include "interpreter/linkResolver.hpp"
32 #include "memory/universe.hpp"
33 #include "oops/method.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "oops/valueKlass.hpp"
36 #include "prims/jniCheck.hpp"
37 #include "runtime/compilationPolicy.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/interfaceSupport.inline.hpp"
40 #include "runtime/javaCalls.hpp"
41 #include "runtime/jniHandles.inline.hpp"
42 #include "runtime/mutexLocker.hpp"
43 #include "runtime/os.inline.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "runtime/signature.hpp"
46 #include "runtime/stubRoutines.hpp"
47 #include "runtime/thread.inline.hpp"
48
49 // -----------------------------------------------------
50 // Implementation of JavaCallWrapper
51
52 JavaCallWrapper::JavaCallWrapper(const methodHandle& callee_method, Handle receiver, JavaValue* result, TRAPS) {
53 JavaThread* thread = (JavaThread *)THREAD;
54 bool clear_pending_exception = true;
55
56 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code");
57 assert(!thread->owns_locks(), "must release all locks when leaving VM");
58 guarantee(thread->can_call_java(), "cannot make java calls from the native compiler");
59 _result = result;
60
61 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub,
62 // since it can potentially block.
63 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread);
64
65 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local
66 // info, since we cannot find oops before the new information is set up completely.
67 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_Java);
68
69 // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state
70 // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions
71 // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state).
72 if (thread->has_special_runtime_exit_condition()) {
73 thread->handle_special_runtime_exit_condition();
74 if (HAS_PENDING_EXCEPTION) {
75 clear_pending_exception = false;
76 }
77 }
78
79
80 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing
81 // the JavaCallWrapper before the entry frame is on the stack.
82 _callee_method = callee_method();
83 _receiver = receiver();
84
85 #ifdef CHECK_UNHANDLED_OOPS
86 THREAD->allow_unhandled_oop(&_receiver);
87 #endif // CHECK_UNHANDLED_OOPS
88
89 _thread = (JavaThread *)thread;
90 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage
91
92 // For the profiler, the last_Java_frame information in thread must always be in
93 // legal state. We have no last Java frame if last_Java_sp == NULL so
94 // the valid transition is to clear _last_Java_sp and then reset the rest of
95 // the (platform specific) state.
96
97 _anchor.copy(_thread->frame_anchor());
98 _thread->frame_anchor()->clear();
99
100 debug_only(_thread->inc_java_call_counter());
101 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage
102
103 assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL");
104
105 // clear any pending exception in thread (native calls start with no exception pending)
106 if(clear_pending_exception) {
107 _thread->clear_pending_exception();
108 }
109
110 if (_anchor.last_Java_sp() == NULL) {
111 _thread->record_base_of_stack_pointer();
112 }
113 }
114
115
116 JavaCallWrapper::~JavaCallWrapper() {
117 assert(_thread == JavaThread::current(), "must still be the same thread");
118
119 // restore previous handle block & Java frame linkage
120 JNIHandleBlock *_old_handles = _thread->active_handles();
121 _thread->set_active_handles(_handles);
122
123 _thread->frame_anchor()->zap();
124
125 debug_only(_thread->dec_java_call_counter());
126
127 if (_anchor.last_Java_sp() == NULL) {
128 _thread->set_base_of_stack_pointer(NULL);
129 }
130
131
132 // Old thread-local info. has been restored. We are not back in the VM.
133 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm);
134
135 // State has been restored now make the anchor frame visible for the profiler.
136 // Do this after the transition because this allows us to put an assert
137 // the Java->vm transition which checks to see that stack is not walkable
138 // on sparc/ia64 which will catch violations of the reseting of last_Java_frame
139 // invariants (i.e. _flags always cleared on return to Java)
140
141 _thread->frame_anchor()->copy(&_anchor);
142
143 // Release handles after we are marked as being inside the VM again, since this
144 // operation might block
145 JNIHandleBlock::release_block(_old_handles, _thread);
146 }
147
148
149 void JavaCallWrapper::oops_do(OopClosure* f) {
150 f->do_oop((oop*)&_receiver);
151 handles()->oops_do(f);
152 }
153
154
155 // Helper methods
156 static BasicType runtime_type_from(JavaValue* result) {
157 switch (result->get_type()) {
158 case T_BOOLEAN : // fall through
159 case T_CHAR : // fall through
160 case T_SHORT : // fall through
161 case T_INT : // fall through
162 #ifndef _LP64
163 case T_OBJECT : // fall through
164 case T_ARRAY : // fall through
165 case T_VALUETYPE: // fall through
166 #endif
167 case T_BYTE : // fall through
168 case T_VOID : return T_INT;
169 case T_LONG : return T_LONG;
170 case T_FLOAT : return T_FLOAT;
171 case T_DOUBLE : return T_DOUBLE;
172 #ifdef _LP64
173 case T_ARRAY : // fall through
174 case T_OBJECT : return T_OBJECT;
175 case T_VALUETYPE: return T_VALUETYPE;
176 #endif
177 default:
178 ShouldNotReachHere();
179 return T_ILLEGAL;
180 }
181 }
182
183 // ============ Virtual calls ============
184
185 void JavaCalls::call_virtual(JavaValue* result, Klass* spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
186 CallInfo callinfo;
187 Handle receiver = args->receiver();
188 Klass* recvrKlass = receiver.is_null() ? (Klass*)NULL : receiver->klass();
189 LinkInfo link_info(spec_klass, name, signature);
190 LinkResolver::resolve_virtual_call(
191 callinfo, receiver, recvrKlass, link_info, true, CHECK);
192 methodHandle method = callinfo.selected_method();
193 assert(method.not_null(), "should have thrown exception");
194
195 // Invoke the method
196 JavaCalls::call(result, method, args, CHECK);
197 }
198
199
200 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, TRAPS) {
201 JavaCallArguments args(receiver);
202 call_virtual(result, spec_klass, name, signature, &args, CHECK);
203 }
204
205
206 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) {
207 JavaCallArguments args(receiver);
208 args.push_oop(arg1);
209 call_virtual(result, spec_klass, name, signature, &args, CHECK);
210 }
211
212
213
214 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, Klass* spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
215 JavaCallArguments args(receiver);
216 args.push_oop(arg1);
217 args.push_oop(arg2);
218 call_virtual(result, spec_klass, name, signature, &args, CHECK);
219 }
220
221
222 // ============ Special calls ============
223
224 void JavaCalls::call_special(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
225 CallInfo callinfo;
226 LinkInfo link_info(klass, name, signature);
227 LinkResolver::resolve_special_call(callinfo, args->receiver(), link_info, CHECK);
228 methodHandle method = callinfo.selected_method();
229 assert(method.not_null(), "should have thrown exception");
230
231 // Invoke the method
232 JavaCalls::call(result, method, args, CHECK);
233 }
234
235
236 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, TRAPS) {
237 JavaCallArguments args(receiver);
238 call_special(result, klass, name, signature, &args, CHECK);
239 }
240
241
242 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) {
243 JavaCallArguments args(receiver);
244 args.push_oop(arg1);
245 call_special(result, klass, name, signature, &args, CHECK);
246 }
247
248
249 void JavaCalls::call_special(JavaValue* result, Handle receiver, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
250 JavaCallArguments args(receiver);
251 args.push_oop(arg1);
252 args.push_oop(arg2);
253 call_special(result, klass, name, signature, &args, CHECK);
254 }
255
256
257 // ============ Static calls ============
258
259 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) {
260 CallInfo callinfo;
261 LinkInfo link_info(klass, name, signature);
262 LinkResolver::resolve_static_call(callinfo, link_info, true, CHECK);
263 methodHandle method = callinfo.selected_method();
264 assert(method.not_null(), "should have thrown exception");
265
266 // Invoke the method
267 JavaCalls::call(result, method, args, CHECK);
268 }
269
270
271 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, TRAPS) {
272 JavaCallArguments args;
273 call_static(result, klass, name, signature, &args, CHECK);
274 }
275
276
277 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) {
278 JavaCallArguments args(arg1);
279 call_static(result, klass, name, signature, &args, CHECK);
280 }
281
282
283 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) {
284 JavaCallArguments args;
285 args.push_oop(arg1);
286 args.push_oop(arg2);
287 call_static(result, klass, name, signature, &args, CHECK);
288 }
289
290
291 void JavaCalls::call_static(JavaValue* result, Klass* klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, Handle arg3, TRAPS) {
292 JavaCallArguments args;
293 args.push_oop(arg1);
294 args.push_oop(arg2);
295 args.push_oop(arg3);
296 call_static(result, klass, name, signature, &args, CHECK);
297 }
298
299 // ============ allocate and initialize new object instance ============
300
301 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, JavaCallArguments* args, TRAPS) {
302 klass->initialize(CHECK_NH); // Quick no-op if already initialized.
303
304 // Special case for factory methods
305 if (!constructor_signature->is_void_method_signature()) {
306 assert(klass->is_value(), "inline classes must use factory methods");
307 JavaValue factory_result(T_OBJECT);
308 JavaCalls::call_static(&factory_result, klass,
309 vmSymbols::object_initializer_name(),
310 constructor_signature, args, CHECK_NH);
311 return Handle(THREAD, (oop)factory_result.get_jobject());
312 }
313
314 // main branch of code creates a non-inline object:
315 assert(!klass->is_value(), "classic constructors are only for non-inline classes");
316 Handle obj = klass->allocate_instance_handle(CHECK_NH);
317 JavaValue void_result(T_VOID);
318 args->set_receiver(obj); // inserts <obj> as the first argument.
319 JavaCalls::call_special(&void_result, klass,
320 vmSymbols::object_initializer_name(),
321 constructor_signature, args, CHECK_NH);
322 // Already returned a Null Handle if any exception is pending.
323 return obj;
324 }
325
326 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, TRAPS) {
327 JavaCallArguments args;
328 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
329 }
330
331 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, TRAPS) {
332 JavaCallArguments args;
333 args.push_oop(arg1);
334 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
335 }
336
337 Handle JavaCalls::construct_new_instance(InstanceKlass* klass, Symbol* constructor_signature, Handle arg1, Handle arg2, TRAPS) {
338 JavaCallArguments args;
339 args.push_oop(arg1);
340 args.push_oop(arg2);
341 return JavaCalls::construct_new_instance(klass, constructor_signature, &args, THREAD);
342 }
343
344 // -------------------------------------------------
345 // Implementation of JavaCalls (low level)
346
347
348 void JavaCalls::call(JavaValue* result, const methodHandle& method, JavaCallArguments* args, TRAPS) {
349 // Check if we need to wrap a potential OS exception handler around thread
350 // This is used for e.g. Win32 structured exception handlers
351 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls");
352 // Need to wrap each and every time, since there might be native code down the
353 // stack that has installed its own exception handlers
354 os::os_exception_wrapper(call_helper, result, method, args, THREAD);
355 }
356
357 void JavaCalls::call_helper(JavaValue* result, const methodHandle& method, JavaCallArguments* args, TRAPS) {
358
359 JavaThread* thread = (JavaThread*)THREAD;
360 assert(thread->is_Java_thread(), "must be called by a java thread");
361 assert(method.not_null(), "must have a method to call");
362 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation");
363 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here");
364
365
366 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();)
367
368 #if INCLUDE_JVMCI
369 // Gets the nmethod (if any) that should be called instead of normal target
370 nmethod* alternative_target = args->alternative_target();
371 if (alternative_target == NULL) {
372 #endif
373 // Verify the arguments
374
375 if (CheckJNICalls) {
376 args->verify(method, result->get_type());
377 }
378 else debug_only(args->verify(method, result->get_type()));
379 #if INCLUDE_JVMCI
380 }
381 #else
382
383 // Ignore call if method is empty
384 if (method->is_empty_method()) {
385 assert(result->get_type() == T_VOID, "an empty method must return a void value");
386 return;
387 }
388 #endif
389
390 #ifdef ASSERT
391 { InstanceKlass* holder = method->method_holder();
392 // A klass might not be initialized since JavaCall's might be used during the executing of
393 // the <clinit>. For example, a Thread.start might start executing on an object that is
394 // not fully initialized! (bad Java programming style)
395 assert(holder->is_linked(), "rewriting must have taken place");
396 }
397 #endif
398
399 CompilationPolicy::compile_if_required(method, CHECK);
400
401 // Since the call stub sets up like the interpreter we call the from_interpreted_entry
402 // so we can go compiled via a i2c. Otherwise initial entry method will always
403 // run interpreted.
404 address entry_point = method->from_interpreted_entry();
405 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) {
406 entry_point = method->interpreter_entry();
407 }
408
409 // Figure out if the result value is an oop or not (Note: This is a different value
410 // than result_type. result_type will be T_INT of oops. (it is about size)
411 BasicType result_type = runtime_type_from(result);
412 bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY
413 || result->get_type() == T_VALUETYPE);
414
415 // NOTE: if we move the computation of the result_val_address inside
416 // the call to call_stub, the optimizer produces wrong code.
417 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr());
418
419 // Find receiver
420 Handle receiver = (!method->is_static()) ? args->receiver() : Handle();
421
422 // When we reenter Java, we need to reenable the reserved/yellow zone which
423 // might already be disabled when we are in VM.
424 if (!thread->stack_guards_enabled()) {
425 thread->reguard_stack();
426 }
427
428 // Check that there are shadow pages available before changing thread state
429 // to Java. Calculate current_stack_pointer here to make sure
430 // stack_shadow_pages_available() and bang_stack_shadow_pages() use the same sp.
431 address sp = os::current_stack_pointer();
432 if (!os::stack_shadow_pages_available(THREAD, method, sp)) {
433 // Throw stack overflow exception with preinitialized exception.
434 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method);
435 return;
436 } else {
437 // Touch pages checked if the OS needs them to be touched to be mapped.
438 os::map_stack_shadow_pages(sp);
439 }
440
441 #if INCLUDE_JVMCI
442 if (alternative_target != NULL) {
443 if (alternative_target->is_alive() && !alternative_target->is_unloading()) {
444 thread->set_jvmci_alternate_call_target(alternative_target->verified_entry_point());
445 entry_point = method->adapter()->get_i2c_entry();
446 } else {
447 THROW(vmSymbols::jdk_vm_ci_code_InvalidInstalledCodeException());
448 }
449 }
450 #endif
451
452 Handle vt;
453 if (ValueTypeReturnedAsFields && result->get_type() == T_VALUETYPE) {
454 // Pre allocate buffered value in case the result is returned
455 // flattened by compiled code
456 ValueKlass* vk = method->returned_value_type(thread);
457 vt = vk->allocate_instance_handle(CHECK);
458 }
459
460 // do call
461 { JavaCallWrapper link(method, receiver, result, CHECK);
462 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner
463
464 if (vt() != NULL) {
465 result->set_jobject((jobject)vt());
466 }
467
468 StubRoutines::call_stub()(
469 (address)&link,
470 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem)
471 result_val_address, // see NOTE above (compiler problem)
472 result_type,
473 method(),
474 entry_point,
475 args->parameters(),
476 args->size_of_parameters(),
477 CHECK
478 );
479
480 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call)
481 // Preserve oop return value across possible gc points
482 if (oop_result_flag) {
483 thread->set_vm_result((oop) result->get_jobject());
484 }
485 }
486 } // Exit JavaCallWrapper (can block - potential return oop must be preserved)
487
488 // Check if a thread stop or suspend should be executed
489 // The following assert was not realistic. Thread.stop can set that bit at any moment.
490 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed");
491
492 // Restore possible oop return
493 if (oop_result_flag) {
494 result->set_jobject((jobject)thread->vm_result());
495 thread->set_vm_result(NULL);
496 }
497 }
498
499
500 //--------------------------------------------------------------------------------------
501 // Implementation of JavaCallArguments
502
503 inline bool is_value_state_indirect_oop(uint state) {
504 assert(state != JavaCallArguments::value_state_oop,
505 "Checking for handles after removal");
506 assert(state < JavaCallArguments::value_state_limit,
507 "Invalid value state %u", state);
508 return state != JavaCallArguments::value_state_primitive;
509 }
510
511 inline oop resolve_indirect_oop(intptr_t value, uint state) {
512 switch (state) {
513 case JavaCallArguments::value_state_handle:
514 {
515 oop* ptr = reinterpret_cast<oop*>(value);
516 return Handle::raw_resolve(ptr);
517 }
518
519 case JavaCallArguments::value_state_jobject:
520 {
521 jobject obj = reinterpret_cast<jobject>(value);
522 return JNIHandles::resolve(obj);
523 }
524
525 default:
526 ShouldNotReachHere();
527 return NULL;
528 }
529 }
530
531 intptr_t* JavaCallArguments::parameters() {
532 // First convert all handles to oops
533 for(int i = 0; i < _size; i++) {
534 uint state = _value_state[i];
535 assert(state != value_state_oop, "Multiple handle conversions");
536 if (is_value_state_indirect_oop(state)) {
537 oop obj = resolve_indirect_oop(_value[i], state);
538 _value[i] = cast_from_oop<intptr_t>(obj);
539 _value_state[i] = value_state_oop;
540 }
541 }
542 // Return argument vector
543 return _value;
544 }
545
546
547 class SignatureChekker : public SignatureIterator {
548 private:
549 int _pos;
550 BasicType _return_type;
551 u_char* _value_state;
552 intptr_t* _value;
553
554 public:
555 bool _is_return;
556
557 SignatureChekker(Symbol* signature,
558 BasicType return_type,
559 bool is_static,
560 u_char* value_state,
561 intptr_t* value) :
562 SignatureIterator(signature),
563 _pos(0),
564 _return_type(return_type),
565 _value_state(value_state),
566 _value(value),
567 _is_return(false)
568 {
569 if (!is_static) {
570 check_value(true); // Receiver must be an oop
571 }
572 }
573
574 void check_value(bool type) {
575 uint state = _value_state[_pos++];
576 if (type) {
577 guarantee(is_value_state_indirect_oop(state),
578 "signature does not match pushed arguments: %u at %d",
579 state, _pos - 1);
580 } else {
581 guarantee(state == JavaCallArguments::value_state_primitive,
582 "signature does not match pushed arguments: %u at %d",
583 state, _pos - 1);
584 }
585 }
586
587 void check_doing_return(bool state) { _is_return = state; }
588
589 void check_return_type(BasicType t) {
590 guarantee(_is_return && t == _return_type, "return type does not match");
591 }
592
593 void check_int(BasicType t) {
594 if (_is_return) {
595 check_return_type(t);
596 return;
597 }
598 check_value(false);
599 }
600
601 void check_double(BasicType t) { check_long(t); }
602
603 void check_long(BasicType t) {
604 if (_is_return) {
605 check_return_type(t);
606 return;
607 }
608
609 check_value(false);
610 check_value(false);
611 }
612
613 void check_obj(BasicType t) {
614 if (_is_return) {
615 check_return_type(t);
616 return;
617 }
618
619 intptr_t v = _value[_pos];
620 if (v != 0) {
621 // v is a "handle" referring to an oop, cast to integral type.
622 // There shouldn't be any handles in very low memory.
623 guarantee((size_t)v >= (size_t)os::vm_page_size(),
624 "Bad JNI oop argument %d: " PTR_FORMAT, _pos, v);
625 // Verify the pointee.
626 oop vv = resolve_indirect_oop(v, _value_state[_pos]);
627 guarantee(oopDesc::is_oop_or_null(vv, true),
628 "Bad JNI oop argument %d: " PTR_FORMAT " -> " PTR_FORMAT,
629 _pos, v, p2i(vv));
630 }
631
632 check_value(true); // Verify value state.
633 }
634
635 void do_bool() { check_int(T_BOOLEAN); }
636 void do_char() { check_int(T_CHAR); }
637 void do_float() { check_int(T_FLOAT); }
638 void do_double() { check_double(T_DOUBLE); }
639 void do_byte() { check_int(T_BYTE); }
640 void do_short() { check_int(T_SHORT); }
641 void do_int() { check_int(T_INT); }
642 void do_long() { check_long(T_LONG); }
643 void do_void() { check_return_type(T_VOID); }
644 void do_object(int begin, int end) { check_obj(T_OBJECT); }
645 void do_valuetype(int begin, int end){ check_obj(T_VALUETYPE); }
646 void do_array(int begin, int end) { check_obj(T_OBJECT); }
647 };
648
649
650 void JavaCallArguments::verify(const methodHandle& method, BasicType return_type) {
651 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed");
652
653 // Treat T_OBJECT and T_ARRAY as the same
654 if (return_type == T_ARRAY) return_type = T_OBJECT;
655
656 // Check that oop information is correct
657 Symbol* signature = method->signature();
658
659 SignatureChekker sc(signature,
660 return_type,
661 method->is_static(),
662 _value_state,
663 _value);
664 sc.iterate_parameters();
665 sc.check_doing_return(true);
666 sc.iterate_returntype();
667 }