Mercurial > hg > truffle
annotate src/share/vm/runtime/javaCalls.cpp @ 20268:4c1b88a53c74
8046670: Make CMS metadata aware closures applicable for other collectors
Reviewed-by: ehelin, mgerdin
author | stefank |
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date | Tue, 24 Jun 2014 16:20:15 +0200 |
parents | 190899198332 |
children | cefad50507d8 63a4eb8bcd23 6e0cb14ce59b |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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.inline.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/jniCheck.hpp" | |
35 #include "runtime/compilationPolicy.hpp" | |
36 #include "runtime/handles.inline.hpp" | |
37 #include "runtime/interfaceSupport.hpp" | |
38 #include "runtime/javaCalls.hpp" | |
39 #include "runtime/mutexLocker.hpp" | |
40 #include "runtime/signature.hpp" | |
41 #include "runtime/stubRoutines.hpp" | |
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42 #include "runtime/thread.inline.hpp" |
0 | 43 |
44 // ----------------------------------------------------- | |
45 // Implementation of JavaCallWrapper | |
46 | |
47 JavaCallWrapper::JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS) { | |
48 JavaThread* thread = (JavaThread *)THREAD; | |
49 bool clear_pending_exception = true; | |
50 | |
51 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); | |
52 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
53 guarantee(!thread->is_Compiler_thread(), "cannot make java calls from the compiler"); | |
54 _result = result; | |
55 | |
56 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, | |
57 // since it can potentially block. | |
58 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
59 | |
60 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local | |
61 // info, since we cannot find oops before the new information is set up completely. | |
62 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_Java); | |
63 | |
64 // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state | |
65 // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions | |
66 // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state). | |
67 if (thread->has_special_runtime_exit_condition()) { | |
68 thread->handle_special_runtime_exit_condition(); | |
69 if (HAS_PENDING_EXCEPTION) { | |
70 clear_pending_exception = false; | |
71 } | |
72 } | |
73 | |
74 | |
75 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing | |
76 // the JavaCallWrapper before the entry frame is on the stack. | |
77 _callee_method = callee_method(); | |
78 _receiver = receiver(); | |
79 | |
80 #ifdef CHECK_UNHANDLED_OOPS | |
81 THREAD->allow_unhandled_oop(&_receiver); | |
82 #endif // CHECK_UNHANDLED_OOPS | |
83 | |
84 _thread = (JavaThread *)thread; | |
85 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage | |
86 | |
87 // For the profiler, the last_Java_frame information in thread must always be in | |
88 // legal state. We have no last Java frame if last_Java_sp == NULL so | |
89 // the valid transition is to clear _last_Java_sp and then reset the rest of | |
90 // the (platform specific) state. | |
91 | |
92 _anchor.copy(_thread->frame_anchor()); | |
93 _thread->frame_anchor()->clear(); | |
94 | |
95 debug_only(_thread->inc_java_call_counter()); | |
96 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage | |
97 | |
98 assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL"); | |
99 | |
100 // clear any pending exception in thread (native calls start with no exception pending) | |
101 if(clear_pending_exception) { | |
102 _thread->clear_pending_exception(); | |
103 } | |
104 | |
105 if (_anchor.last_Java_sp() == NULL) { | |
106 _thread->record_base_of_stack_pointer(); | |
107 } | |
108 } | |
109 | |
110 | |
111 JavaCallWrapper::~JavaCallWrapper() { | |
112 assert(_thread == JavaThread::current(), "must still be the same thread"); | |
113 | |
114 // restore previous handle block & Java frame linkage | |
115 JNIHandleBlock *_old_handles = _thread->active_handles(); | |
116 _thread->set_active_handles(_handles); | |
117 | |
118 _thread->frame_anchor()->zap(); | |
119 | |
120 debug_only(_thread->dec_java_call_counter()); | |
121 | |
122 if (_anchor.last_Java_sp() == NULL) { | |
123 _thread->set_base_of_stack_pointer(NULL); | |
124 } | |
125 | |
126 | |
127 // Old thread-local info. has been restored. We are not back in the VM. | |
128 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); | |
129 | |
130 // State has been restored now make the anchor frame visible for the profiler. | |
131 // Do this after the transition because this allows us to put an assert | |
132 // the Java->vm transition which checks to see that stack is not walkable | |
133 // on sparc/ia64 which will catch violations of the reseting of last_Java_frame | |
134 // invariants (i.e. _flags always cleared on return to Java) | |
135 | |
136 _thread->frame_anchor()->copy(&_anchor); | |
137 | |
138 // Release handles after we are marked as being inside the VM again, since this | |
139 // operation might block | |
140 JNIHandleBlock::release_block(_old_handles, _thread); | |
141 } | |
142 | |
143 | |
144 void JavaCallWrapper::oops_do(OopClosure* f) { | |
145 f->do_oop((oop*)&_receiver); | |
146 handles()->oops_do(f); | |
147 } | |
148 | |
149 | |
150 // Helper methods | |
151 static BasicType runtime_type_from(JavaValue* result) { | |
152 switch (result->get_type()) { | |
153 case T_BOOLEAN: // fall through | |
154 case T_CHAR : // fall through | |
155 case T_SHORT : // fall through | |
156 case T_INT : // fall through | |
157 #ifndef _LP64 | |
158 case T_OBJECT : // fall through | |
159 case T_ARRAY : // fall through | |
160 #endif | |
161 case T_BYTE : // fall through | |
162 case T_VOID : return T_INT; | |
163 case T_LONG : return T_LONG; | |
164 case T_FLOAT : return T_FLOAT; | |
165 case T_DOUBLE : return T_DOUBLE; | |
166 #ifdef _LP64 | |
167 case T_ARRAY : // fall through | |
168 case T_OBJECT: return T_OBJECT; | |
169 #endif | |
170 } | |
171 ShouldNotReachHere(); | |
172 return T_ILLEGAL; | |
173 } | |
174 | |
175 // ===== object constructor calls ===== | |
176 | |
177 void JavaCalls::call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS) { | |
178 assert(method->name() == vmSymbols::object_initializer_name(), "Should only be called for default constructor"); | |
179 assert(method->signature() == vmSymbols::void_method_signature(), "Should only be called for default constructor"); | |
180 | |
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181 InstanceKlass* ik = method->method_holder(); |
0 | 182 if (ik->is_initialized() && ik->has_vanilla_constructor()) { |
183 // safe to skip constructor call | |
184 } else { | |
185 static JavaValue result(T_VOID); | |
186 JavaCallArguments args(receiver); | |
187 call(&result, method, &args, CHECK); | |
188 } | |
189 } | |
190 | |
191 // ============ Virtual calls ============ | |
192 | |
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193 void JavaCalls::call_virtual(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 194 CallInfo callinfo; |
195 Handle receiver = args->receiver(); | |
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196 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (Klass*)NULL : receiver->klass()); |
0 | 197 LinkResolver::resolve_virtual_call( |
198 callinfo, receiver, recvrKlass, spec_klass, name, signature, | |
199 KlassHandle(), false, true, CHECK); | |
200 methodHandle method = callinfo.selected_method(); | |
201 assert(method.not_null(), "should have thrown exception"); | |
202 | |
203 // Invoke the method | |
204 JavaCalls::call(result, method, args, CHECK); | |
205 } | |
206 | |
207 | |
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208 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 209 JavaCallArguments args(receiver); // One oop argument |
210 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
211 } | |
212 | |
213 | |
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214 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 215 JavaCallArguments args(receiver); // One oop argument |
216 args.push_oop(arg1); | |
217 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
218 } | |
219 | |
220 | |
221 | |
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222 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 223 JavaCallArguments args(receiver); // One oop argument |
224 args.push_oop(arg1); | |
225 args.push_oop(arg2); | |
226 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
227 } | |
228 | |
229 | |
230 // ============ Special calls ============ | |
231 | |
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232 void JavaCalls::call_special(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 233 CallInfo callinfo; |
234 LinkResolver::resolve_special_call(callinfo, klass, name, signature, KlassHandle(), false, CHECK); | |
235 methodHandle method = callinfo.selected_method(); | |
236 assert(method.not_null(), "should have thrown exception"); | |
237 | |
238 // Invoke the method | |
239 JavaCalls::call(result, method, args, CHECK); | |
240 } | |
241 | |
242 | |
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243 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 244 JavaCallArguments args(receiver); // One oop argument |
245 call_special(result, klass, name, signature, &args, CHECK); | |
246 } | |
247 | |
248 | |
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249 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 250 JavaCallArguments args(receiver); // One oop argument |
251 args.push_oop(arg1); | |
252 call_special(result, klass, name, signature, &args, CHECK); | |
253 } | |
254 | |
255 | |
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256 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 257 JavaCallArguments args(receiver); // One oop argument |
258 args.push_oop(arg1); | |
259 args.push_oop(arg2); | |
260 call_special(result, klass, name, signature, &args, CHECK); | |
261 } | |
262 | |
263 | |
264 // ============ Static calls ============ | |
265 | |
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266 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 267 CallInfo callinfo; |
268 LinkResolver::resolve_static_call(callinfo, klass, name, signature, KlassHandle(), false, true, CHECK); | |
269 methodHandle method = callinfo.selected_method(); | |
270 assert(method.not_null(), "should have thrown exception"); | |
271 | |
272 // Invoke the method | |
273 JavaCalls::call(result, method, args, CHECK); | |
274 } | |
275 | |
276 | |
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277 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 278 JavaCallArguments args; // No argument |
279 call_static(result, klass, name, signature, &args, CHECK); | |
280 } | |
281 | |
282 | |
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283 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 284 JavaCallArguments args(arg1); // One oop argument |
285 call_static(result, klass, name, signature, &args, CHECK); | |
286 } | |
287 | |
288 | |
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289 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 290 JavaCallArguments args; // One oop argument |
291 args.push_oop(arg1); | |
292 args.push_oop(arg2); | |
293 call_static(result, klass, name, signature, &args, CHECK); | |
294 } | |
295 | |
296 | |
297 // ------------------------------------------------- | |
298 // Implementation of JavaCalls (low level) | |
299 | |
300 | |
301 void JavaCalls::call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS) { | |
302 // Check if we need to wrap a potential OS exception handler around thread | |
303 // This is used for e.g. Win32 structured exception handlers | |
304 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); | |
305 // Need to wrap each and everytime, since there might be native code down the | |
306 // stack that has installed its own exception handlers | |
307 os::os_exception_wrapper(call_helper, result, &method, args, THREAD); | |
308 } | |
309 | |
310 void JavaCalls::call_helper(JavaValue* result, methodHandle* m, JavaCallArguments* args, TRAPS) { | |
311 methodHandle method = *m; | |
312 JavaThread* thread = (JavaThread*)THREAD; | |
313 assert(thread->is_Java_thread(), "must be called by a java thread"); | |
314 assert(method.not_null(), "must have a method to call"); | |
315 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); | |
316 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); | |
317 | |
318 | |
319 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
320 | |
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321 // Verify the arguments |
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322 |
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323 if (CheckJNICalls) { |
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324 args->verify(method, result->get_type(), thread); |
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325 } |
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326 else debug_only(args->verify(method, result->get_type(), thread)); |
0 | 327 |
328 // Ignore call if method is empty | |
329 if (method->is_empty_method()) { | |
330 assert(result->get_type() == T_VOID, "an empty method must return a void value"); | |
331 return; | |
332 } | |
333 | |
334 | |
335 #ifdef ASSERT | |
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336 { InstanceKlass* holder = method->method_holder(); |
0 | 337 // A klass might not be initialized since JavaCall's might be used during the executing of |
338 // the <clinit>. For example, a Thread.start might start executing on an object that is | |
339 // not fully initialized! (bad Java programming style) | |
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340 assert(holder->is_linked(), "rewritting must have taken place"); |
0 | 341 } |
342 #endif | |
343 | |
344 | |
345 assert(!thread->is_Compiler_thread(), "cannot compile from the compiler"); | |
1783 | 346 if (CompilationPolicy::must_be_compiled(method)) { |
0 | 347 CompileBroker::compile_method(method, InvocationEntryBci, |
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348 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 349 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 350 } |
351 | |
352 // Since the call stub sets up like the interpreter we call the from_interpreted_entry | |
353 // so we can go compiled via a i2c. Otherwise initial entry method will always | |
354 // run interpreted. | |
355 address entry_point = method->from_interpreted_entry(); | |
356 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { | |
357 entry_point = method->interpreter_entry(); | |
358 } | |
359 | |
360 // Figure out if the result value is an oop or not (Note: This is a different value | |
361 // than result_type. result_type will be T_INT of oops. (it is about size) | |
362 BasicType result_type = runtime_type_from(result); | |
363 bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY); | |
364 | |
365 // NOTE: if we move the computation of the result_val_address inside | |
366 // the call to call_stub, the optimizer produces wrong code. | |
367 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); | |
368 | |
369 // Find receiver | |
370 Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); | |
371 | |
372 // When we reenter Java, we need to reenable the yellow zone which | |
373 // might already be disabled when we are in VM. | |
374 if (thread->stack_yellow_zone_disabled()) { | |
375 thread->reguard_stack(); | |
376 } | |
377 | |
378 // Check that there are shadow pages available before changing thread state | |
379 // to Java | |
380 if (!os::stack_shadow_pages_available(THREAD, method)) { | |
381 // Throw stack overflow exception with preinitialized exception. | |
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382 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method); |
0 | 383 return; |
384 } else { | |
385 // Touch pages checked if the OS needs them to be touched to be mapped. | |
386 os::bang_stack_shadow_pages(); | |
387 } | |
388 | |
389 // do call | |
390 { JavaCallWrapper link(method, receiver, result, CHECK); | |
391 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner | |
392 | |
393 StubRoutines::call_stub()( | |
394 (address)&link, | |
395 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) | |
396 result_val_address, // see NOTE above (compiler problem) | |
397 result_type, | |
398 method(), | |
399 entry_point, | |
400 args->parameters(), | |
401 args->size_of_parameters(), | |
402 CHECK | |
403 ); | |
404 | |
405 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) | |
406 // Preserve oop return value across possible gc points | |
407 if (oop_result_flag) { | |
408 thread->set_vm_result((oop) result->get_jobject()); | |
409 } | |
410 } | |
411 } // Exit JavaCallWrapper (can block - potential return oop must be preserved) | |
412 | |
413 // Check if a thread stop or suspend should be executed | |
414 // The following assert was not realistic. Thread.stop can set that bit at any moment. | |
415 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); | |
416 | |
417 // Restore possible oop return | |
418 if (oop_result_flag) { | |
419 result->set_jobject((jobject)thread->vm_result()); | |
420 thread->set_vm_result(NULL); | |
421 } | |
422 } | |
423 | |
424 | |
425 //-------------------------------------------------------------------------------------- | |
426 // Implementation of JavaCallArguments | |
427 | |
428 intptr_t* JavaCallArguments::parameters() { | |
429 // First convert all handles to oops | |
430 for(int i = 0; i < _size; i++) { | |
431 if (_is_oop[i]) { | |
432 // Handle conversion | |
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433 _value[i] = cast_from_oop<intptr_t>(Handle::raw_resolve((oop *)_value[i])); |
0 | 434 } |
435 } | |
436 // Return argument vector | |
1506 | 437 return _value; |
0 | 438 } |
439 | |
440 | |
441 class SignatureChekker : public SignatureIterator { | |
442 private: | |
443 bool *_is_oop; | |
444 int _pos; | |
445 BasicType _return_type; | |
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446 intptr_t* _value; |
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447 Thread* _thread; |
0 | 448 |
449 public: | |
450 bool _is_return; | |
451 | |
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452 SignatureChekker(Symbol* signature, BasicType return_type, bool is_static, bool* is_oop, intptr_t* value, Thread* thread) : SignatureIterator(signature) { |
0 | 453 _is_oop = is_oop; |
454 _is_return = false; | |
455 _return_type = return_type; | |
456 _pos = 0; | |
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457 _value = value; |
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458 _thread = thread; |
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459 |
0 | 460 if (!is_static) { |
461 check_value(true); // Receiver must be an oop | |
462 } | |
463 } | |
464 | |
465 void check_value(bool type) { | |
466 guarantee(_is_oop[_pos++] == type, "signature does not match pushed arguments"); | |
467 } | |
468 | |
469 void check_doing_return(bool state) { _is_return = state; } | |
470 | |
471 void check_return_type(BasicType t) { | |
472 guarantee(_is_return && t == _return_type, "return type does not match"); | |
473 } | |
474 | |
475 void check_int(BasicType t) { | |
476 if (_is_return) { | |
477 check_return_type(t); | |
478 return; | |
479 } | |
480 check_value(false); | |
481 } | |
482 | |
483 void check_double(BasicType t) { check_long(t); } | |
484 | |
485 void check_long(BasicType t) { | |
486 if (_is_return) { | |
487 check_return_type(t); | |
488 return; | |
489 } | |
490 | |
491 check_value(false); | |
492 check_value(false); | |
493 } | |
494 | |
495 void check_obj(BasicType t) { | |
496 if (_is_return) { | |
497 check_return_type(t); | |
498 return; | |
499 } | |
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500 |
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501 // verify handle and the oop pointed to by handle |
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502 int p = _pos; |
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503 bool bad = false; |
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504 // If argument is oop |
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505 if (_is_oop[p]) { |
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506 intptr_t v = _value[p]; |
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507 if (v != 0 ) { |
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508 size_t t = (size_t)v; |
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509 bad = (t < (size_t)os::vm_page_size() ) || !Handle::raw_resolve((oop *)v)->is_oop_or_null(true); |
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510 if (CheckJNICalls && bad) { |
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511 ReportJNIFatalError((JavaThread*)_thread, "Bad JNI oop argument"); |
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512 } |
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513 } |
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514 // for the regular debug case. |
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515 assert(!bad, "Bad JNI oop argument"); |
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516 } |
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517 |
0 | 518 check_value(true); |
519 } | |
520 | |
521 void do_bool() { check_int(T_BOOLEAN); } | |
522 void do_char() { check_int(T_CHAR); } | |
523 void do_float() { check_int(T_FLOAT); } | |
524 void do_double() { check_double(T_DOUBLE); } | |
525 void do_byte() { check_int(T_BYTE); } | |
526 void do_short() { check_int(T_SHORT); } | |
527 void do_int() { check_int(T_INT); } | |
528 void do_long() { check_long(T_LONG); } | |
529 void do_void() { check_return_type(T_VOID); } | |
530 void do_object(int begin, int end) { check_obj(T_OBJECT); } | |
531 void do_array(int begin, int end) { check_obj(T_OBJECT); } | |
532 }; | |
533 | |
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534 |
0 | 535 void JavaCallArguments::verify(methodHandle method, BasicType return_type, |
536 Thread *thread) { | |
537 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); | |
538 | |
539 // Treat T_OBJECT and T_ARRAY as the same | |
540 if (return_type == T_ARRAY) return_type = T_OBJECT; | |
541 | |
542 // Check that oop information is correct | |
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543 Symbol* signature = method->signature(); |
0 | 544 |
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545 SignatureChekker sc(signature, return_type, method->is_static(),_is_oop, _value, thread); |
0 | 546 sc.iterate_parameters(); |
547 sc.check_doing_return(true); | |
548 sc.iterate_returntype(); | |
549 } |