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annotate src/share/vm/runtime/javaCalls.cpp @ 4575:ccb5369481a2
Clarified mx help text on how to build/run [Graal|Client|Server].
author | Doug Simon <doug.simon@oracle.com> |
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date | Mon, 13 Feb 2012 10:27:38 +0100 |
parents | 04b9a2566eec |
children | 1b8d02e10ee8 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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" | |
42 #ifdef TARGET_OS_FAMILY_linux | |
43 # include "thread_linux.inline.hpp" | |
44 #endif | |
45 #ifdef TARGET_OS_FAMILY_solaris | |
46 # include "thread_solaris.inline.hpp" | |
47 #endif | |
48 #ifdef TARGET_OS_FAMILY_windows | |
49 # include "thread_windows.inline.hpp" | |
50 #endif | |
3960 | 51 #ifdef TARGET_OS_FAMILY_bsd |
52 # include "thread_bsd.inline.hpp" | |
53 #endif | |
0 | 54 |
55 // ----------------------------------------------------- | |
56 // Implementation of JavaCallWrapper | |
57 | |
58 JavaCallWrapper::JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS) { | |
59 JavaThread* thread = (JavaThread *)THREAD; | |
60 bool clear_pending_exception = true; | |
61 | |
62 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); | |
63 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
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64 // (tw) may we do this? |
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65 // guarantee(!thread->is_Compiler_thread(), "cannot make java calls from the compiler"); |
0 | 66 _result = result; |
67 | |
68 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, | |
69 // since it can potentially block. | |
70 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
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(thread, _thread_in_vm, _thread_in_Java); | |
75 | |
76 // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state | |
77 // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions | |
78 // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state). | |
79 if (thread->has_special_runtime_exit_condition()) { | |
80 thread->handle_special_runtime_exit_condition(); | |
81 if (HAS_PENDING_EXCEPTION) { | |
82 clear_pending_exception = false; | |
83 } | |
84 } | |
85 | |
86 | |
87 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing | |
88 // the JavaCallWrapper before the entry frame is on the stack. | |
89 _callee_method = callee_method(); | |
90 _receiver = receiver(); | |
91 | |
92 #ifdef CHECK_UNHANDLED_OOPS | |
93 THREAD->allow_unhandled_oop(&_callee_method); | |
94 THREAD->allow_unhandled_oop(&_receiver); | |
95 #endif // CHECK_UNHANDLED_OOPS | |
96 | |
97 _thread = (JavaThread *)thread; | |
98 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage | |
99 | |
100 // For the profiler, the last_Java_frame information in thread must always be in | |
101 // legal state. We have no last Java frame if last_Java_sp == NULL so | |
102 // the valid transition is to clear _last_Java_sp and then reset the rest of | |
103 // the (platform specific) state. | |
104 | |
105 _anchor.copy(_thread->frame_anchor()); | |
106 _thread->frame_anchor()->clear(); | |
107 | |
108 debug_only(_thread->inc_java_call_counter()); | |
109 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage | |
110 | |
111 assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL"); | |
112 | |
113 // clear any pending exception in thread (native calls start with no exception pending) | |
114 if(clear_pending_exception) { | |
115 _thread->clear_pending_exception(); | |
116 } | |
117 | |
118 if (_anchor.last_Java_sp() == NULL) { | |
119 _thread->record_base_of_stack_pointer(); | |
120 } | |
121 } | |
122 | |
123 | |
124 JavaCallWrapper::~JavaCallWrapper() { | |
125 assert(_thread == JavaThread::current(), "must still be the same thread"); | |
126 | |
127 // restore previous handle block & Java frame linkage | |
128 JNIHandleBlock *_old_handles = _thread->active_handles(); | |
129 _thread->set_active_handles(_handles); | |
130 | |
131 _thread->frame_anchor()->zap(); | |
132 | |
133 debug_only(_thread->dec_java_call_counter()); | |
134 | |
135 if (_anchor.last_Java_sp() == NULL) { | |
136 _thread->set_base_of_stack_pointer(NULL); | |
137 } | |
138 | |
139 | |
140 // Old thread-local info. has been restored. We are not back in the VM. | |
141 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); | |
142 | |
143 // State has been restored now make the anchor frame visible for the profiler. | |
144 // Do this after the transition because this allows us to put an assert | |
145 // the Java->vm transition which checks to see that stack is not walkable | |
146 // on sparc/ia64 which will catch violations of the reseting of last_Java_frame | |
147 // invariants (i.e. _flags always cleared on return to Java) | |
148 | |
149 _thread->frame_anchor()->copy(&_anchor); | |
150 | |
151 // Release handles after we are marked as being inside the VM again, since this | |
152 // operation might block | |
153 JNIHandleBlock::release_block(_old_handles, _thread); | |
154 } | |
155 | |
156 | |
157 void JavaCallWrapper::oops_do(OopClosure* f) { | |
158 f->do_oop((oop*)&_callee_method); | |
159 f->do_oop((oop*)&_receiver); | |
160 handles()->oops_do(f); | |
161 } | |
162 | |
163 | |
164 // Helper methods | |
165 static BasicType runtime_type_from(JavaValue* result) { | |
166 switch (result->get_type()) { | |
167 case T_BOOLEAN: // fall through | |
168 case T_CHAR : // fall through | |
169 case T_SHORT : // fall through | |
170 case T_INT : // fall through | |
171 #ifndef _LP64 | |
172 case T_OBJECT : // fall through | |
173 case T_ARRAY : // fall through | |
174 #endif | |
175 case T_BYTE : // fall through | |
176 case T_VOID : return T_INT; | |
177 case T_LONG : return T_LONG; | |
178 case T_FLOAT : return T_FLOAT; | |
179 case T_DOUBLE : return T_DOUBLE; | |
180 #ifdef _LP64 | |
181 case T_ARRAY : // fall through | |
182 case T_OBJECT: return T_OBJECT; | |
183 #endif | |
184 } | |
185 ShouldNotReachHere(); | |
186 return T_ILLEGAL; | |
187 } | |
188 | |
189 // ===== object constructor calls ===== | |
190 | |
191 void JavaCalls::call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS) { | |
192 assert(method->name() == vmSymbols::object_initializer_name(), "Should only be called for default constructor"); | |
193 assert(method->signature() == vmSymbols::void_method_signature(), "Should only be called for default constructor"); | |
194 | |
195 instanceKlass* ik = instanceKlass::cast(method->method_holder()); | |
196 if (ik->is_initialized() && ik->has_vanilla_constructor()) { | |
197 // safe to skip constructor call | |
198 } else { | |
199 static JavaValue result(T_VOID); | |
200 JavaCallArguments args(receiver); | |
201 call(&result, method, &args, CHECK); | |
202 } | |
203 } | |
204 | |
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205 // ============ Interface calls ============ |
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206 |
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207 void JavaCalls::call_interface(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
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208 CallInfo callinfo; |
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209 Handle receiver = args->receiver(); |
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210 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); |
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211 LinkResolver::resolve_interface_call( |
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212 callinfo, receiver, recvrKlass, spec_klass, name, signature, |
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213 KlassHandle(), false, true, CHECK); |
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214 methodHandle method = callinfo.selected_method(); |
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215 assert(method.not_null(), "should have thrown exception"); |
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216 |
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217 // Invoke the method |
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218 JavaCalls::call(result, method, args, CHECK); |
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219 } |
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220 |
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221 |
0 | 222 // ============ Virtual calls ============ |
223 | |
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224 void JavaCalls::call_virtual(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 225 CallInfo callinfo; |
226 Handle receiver = args->receiver(); | |
227 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); | |
228 LinkResolver::resolve_virtual_call( | |
229 callinfo, receiver, recvrKlass, spec_klass, name, signature, | |
230 KlassHandle(), false, true, CHECK); | |
231 methodHandle method = callinfo.selected_method(); | |
232 assert(method.not_null(), "should have thrown exception"); | |
233 | |
234 // Invoke the method | |
235 JavaCalls::call(result, method, args, CHECK); | |
236 } | |
237 | |
238 | |
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239 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 240 JavaCallArguments args(receiver); // One oop argument |
241 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
242 } | |
243 | |
244 | |
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245 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 246 JavaCallArguments args(receiver); // One oop argument |
247 args.push_oop(arg1); | |
248 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
249 } | |
250 | |
251 | |
252 | |
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253 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 254 JavaCallArguments args(receiver); // One oop argument |
255 args.push_oop(arg1); | |
256 args.push_oop(arg2); | |
257 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
258 } | |
259 | |
260 | |
261 // ============ Special calls ============ | |
262 | |
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263 void JavaCalls::call_special(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 264 CallInfo callinfo; |
265 LinkResolver::resolve_special_call(callinfo, klass, name, signature, KlassHandle(), false, CHECK); | |
266 methodHandle method = callinfo.selected_method(); | |
267 assert(method.not_null(), "should have thrown exception"); | |
268 | |
269 // Invoke the method | |
270 JavaCalls::call(result, method, args, CHECK); | |
271 } | |
272 | |
273 | |
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274 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 275 JavaCallArguments args(receiver); // One oop argument |
276 call_special(result, klass, name, signature, &args, CHECK); | |
277 } | |
278 | |
279 | |
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280 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 281 JavaCallArguments args(receiver); // One oop argument |
282 args.push_oop(arg1); | |
283 call_special(result, klass, name, signature, &args, CHECK); | |
284 } | |
285 | |
286 | |
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287 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 288 JavaCallArguments args(receiver); // One oop argument |
289 args.push_oop(arg1); | |
290 args.push_oop(arg2); | |
291 call_special(result, klass, name, signature, &args, CHECK); | |
292 } | |
293 | |
294 | |
295 // ============ Static calls ============ | |
296 | |
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297 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 298 CallInfo callinfo; |
299 LinkResolver::resolve_static_call(callinfo, klass, name, signature, KlassHandle(), false, true, CHECK); | |
300 methodHandle method = callinfo.selected_method(); | |
301 assert(method.not_null(), "should have thrown exception"); | |
302 | |
303 // Invoke the method | |
304 JavaCalls::call(result, method, args, CHECK); | |
305 } | |
306 | |
307 | |
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308 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 309 JavaCallArguments args; // No argument |
310 call_static(result, klass, name, signature, &args, CHECK); | |
311 } | |
312 | |
313 | |
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314 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 315 JavaCallArguments args(arg1); // One oop argument |
316 call_static(result, klass, name, signature, &args, CHECK); | |
317 } | |
318 | |
319 | |
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320 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 321 JavaCallArguments args; // One oop argument |
322 args.push_oop(arg1); | |
323 args.push_oop(arg2); | |
324 call_static(result, klass, name, signature, &args, CHECK); | |
325 } | |
326 | |
327 | |
328 // ------------------------------------------------- | |
329 // Implementation of JavaCalls (low level) | |
330 | |
331 | |
332 void JavaCalls::call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS) { | |
333 // Check if we need to wrap a potential OS exception handler around thread | |
334 // This is used for e.g. Win32 structured exception handlers | |
335 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); | |
336 // Need to wrap each and everytime, since there might be native code down the | |
337 // stack that has installed its own exception handlers | |
338 os::os_exception_wrapper(call_helper, result, &method, args, THREAD); | |
339 } | |
340 | |
341 void JavaCalls::call_helper(JavaValue* result, methodHandle* m, JavaCallArguments* args, TRAPS) { | |
342 methodHandle method = *m; | |
343 JavaThread* thread = (JavaThread*)THREAD; | |
344 assert(thread->is_Java_thread(), "must be called by a java thread"); | |
345 assert(method.not_null(), "must have a method to call"); | |
346 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); | |
347 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); | |
348 | |
349 | |
350 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
351 | |
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352 // Verify the arguments |
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353 |
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354 if (CheckJNICalls) { |
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355 args->verify(method, result->get_type(), thread); |
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356 } |
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357 else debug_only(args->verify(method, result->get_type(), thread)); |
0 | 358 |
359 // Ignore call if method is empty | |
360 if (method->is_empty_method()) { | |
361 assert(result->get_type() == T_VOID, "an empty method must return a void value"); | |
362 return; | |
363 } | |
364 | |
365 | |
366 #ifdef ASSERT | |
367 { klassOop holder = method->method_holder(); | |
368 // A klass might not be initialized since JavaCall's might be used during the executing of | |
369 // the <clinit>. For example, a Thread.start might start executing on an object that is | |
370 // not fully initialized! (bad Java programming style) | |
371 assert(instanceKlass::cast(holder)->is_linked(), "rewritting must have taken place"); | |
372 } | |
373 #endif | |
374 | |
375 | |
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376 // (tw) may we do this? |
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377 //assert(!thread->is_Compiler_thread(), "cannot compile from the compiler"); |
1783 | 378 if (CompilationPolicy::must_be_compiled(method)) { |
0 | 379 CompileBroker::compile_method(method, InvocationEntryBci, |
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380 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 381 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 382 } |
383 | |
384 // Since the call stub sets up like the interpreter we call the from_interpreted_entry | |
385 // so we can go compiled via a i2c. Otherwise initial entry method will always | |
386 // run interpreted. | |
387 address entry_point = method->from_interpreted_entry(); | |
388 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { | |
389 entry_point = method->interpreter_entry(); | |
390 } | |
391 | |
392 // Figure out if the result value is an oop or not (Note: This is a different value | |
393 // than result_type. result_type will be T_INT of oops. (it is about size) | |
394 BasicType result_type = runtime_type_from(result); | |
395 bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY); | |
396 | |
397 // NOTE: if we move the computation of the result_val_address inside | |
398 // the call to call_stub, the optimizer produces wrong code. | |
399 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); | |
400 | |
401 // Find receiver | |
402 Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); | |
403 | |
404 // When we reenter Java, we need to reenable the yellow zone which | |
405 // might already be disabled when we are in VM. | |
406 if (thread->stack_yellow_zone_disabled()) { | |
407 thread->reguard_stack(); | |
408 } | |
409 | |
410 // Check that there are shadow pages available before changing thread state | |
411 // to Java | |
412 if (!os::stack_shadow_pages_available(THREAD, method)) { | |
413 // Throw stack overflow exception with preinitialized exception. | |
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414 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method); |
0 | 415 return; |
416 } else { | |
417 // Touch pages checked if the OS needs them to be touched to be mapped. | |
418 os::bang_stack_shadow_pages(); | |
419 } | |
420 | |
421 // do call | |
422 { JavaCallWrapper link(method, receiver, result, CHECK); | |
423 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner | |
424 | |
425 StubRoutines::call_stub()( | |
426 (address)&link, | |
427 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) | |
428 result_val_address, // see NOTE above (compiler problem) | |
429 result_type, | |
430 method(), | |
431 entry_point, | |
432 args->parameters(), | |
433 args->size_of_parameters(), | |
434 CHECK | |
435 ); | |
436 | |
437 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) | |
438 // Preserve oop return value across possible gc points | |
439 if (oop_result_flag) { | |
440 thread->set_vm_result((oop) result->get_jobject()); | |
441 } | |
442 } | |
443 } // Exit JavaCallWrapper (can block - potential return oop must be preserved) | |
444 | |
445 // Check if a thread stop or suspend should be executed | |
446 // The following assert was not realistic. Thread.stop can set that bit at any moment. | |
447 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); | |
448 | |
449 // Restore possible oop return | |
450 if (oop_result_flag) { | |
451 result->set_jobject((jobject)thread->vm_result()); | |
452 thread->set_vm_result(NULL); | |
453 } | |
454 } | |
455 | |
456 | |
457 //-------------------------------------------------------------------------------------- | |
458 // Implementation of JavaCallArguments | |
459 | |
460 intptr_t* JavaCallArguments::parameters() { | |
461 // First convert all handles to oops | |
462 for(int i = 0; i < _size; i++) { | |
463 if (_is_oop[i]) { | |
464 // Handle conversion | |
465 _value[i] = (intptr_t)Handle::raw_resolve((oop *)_value[i]); | |
466 } | |
467 } | |
468 // Return argument vector | |
1506 | 469 return _value; |
0 | 470 } |
471 | |
472 | |
473 class SignatureChekker : public SignatureIterator { | |
474 private: | |
475 bool *_is_oop; | |
476 int _pos; | |
477 BasicType _return_type; | |
465
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478 intptr_t* _value; |
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479 Thread* _thread; |
0 | 480 |
481 public: | |
482 bool _is_return; | |
483 | |
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484 SignatureChekker(Symbol* signature, BasicType return_type, bool is_static, bool* is_oop, intptr_t* value, Thread* thread) : SignatureIterator(signature) { |
0 | 485 _is_oop = is_oop; |
486 _is_return = false; | |
487 _return_type = return_type; | |
488 _pos = 0; | |
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489 _value = value; |
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490 _thread = thread; |
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491 |
0 | 492 if (!is_static) { |
493 check_value(true); // Receiver must be an oop | |
494 } | |
495 } | |
496 | |
497 void check_value(bool type) { | |
498 guarantee(_is_oop[_pos++] == type, "signature does not match pushed arguments"); | |
499 } | |
500 | |
501 void check_doing_return(bool state) { _is_return = state; } | |
502 | |
503 void check_return_type(BasicType t) { | |
504 guarantee(_is_return && t == _return_type, "return type does not match"); | |
505 } | |
506 | |
507 void check_int(BasicType t) { | |
508 if (_is_return) { | |
509 check_return_type(t); | |
510 return; | |
511 } | |
512 check_value(false); | |
513 } | |
514 | |
515 void check_double(BasicType t) { check_long(t); } | |
516 | |
517 void check_long(BasicType t) { | |
518 if (_is_return) { | |
519 check_return_type(t); | |
520 return; | |
521 } | |
522 | |
523 check_value(false); | |
524 check_value(false); | |
525 } | |
526 | |
527 void check_obj(BasicType t) { | |
528 if (_is_return) { | |
529 check_return_type(t); | |
530 return; | |
531 } | |
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532 |
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533 // verify handle and the oop pointed to by handle |
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534 int p = _pos; |
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535 bool bad = false; |
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536 // If argument is oop |
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537 if (_is_oop[p]) { |
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538 intptr_t v = _value[p]; |
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539 if (v != 0 ) { |
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540 size_t t = (size_t)v; |
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541 bad = (t < (size_t)os::vm_page_size() ) || !Handle::raw_resolve((oop *)v)->is_oop_or_null(true); |
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542 if (CheckJNICalls && bad) { |
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543 ReportJNIFatalError((JavaThread*)_thread, "Bad JNI oop argument"); |
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544 } |
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545 } |
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546 // for the regular debug case. |
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547 assert(!bad, "Bad JNI oop argument"); |
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548 } |
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549 |
0 | 550 check_value(true); |
551 } | |
552 | |
553 void do_bool() { check_int(T_BOOLEAN); } | |
554 void do_char() { check_int(T_CHAR); } | |
555 void do_float() { check_int(T_FLOAT); } | |
556 void do_double() { check_double(T_DOUBLE); } | |
557 void do_byte() { check_int(T_BYTE); } | |
558 void do_short() { check_int(T_SHORT); } | |
559 void do_int() { check_int(T_INT); } | |
560 void do_long() { check_long(T_LONG); } | |
561 void do_void() { check_return_type(T_VOID); } | |
562 void do_object(int begin, int end) { check_obj(T_OBJECT); } | |
563 void do_array(int begin, int end) { check_obj(T_OBJECT); } | |
564 }; | |
565 | |
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566 |
0 | 567 void JavaCallArguments::verify(methodHandle method, BasicType return_type, |
568 Thread *thread) { | |
569 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); | |
570 | |
571 // Treat T_OBJECT and T_ARRAY as the same | |
572 if (return_type == T_ARRAY) return_type = T_OBJECT; | |
573 | |
574 // Check that oop information is correct | |
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575 Symbol* signature = method->signature(); |
0 | 576 |
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577 SignatureChekker sc(signature, return_type, method->is_static(),_is_oop, _value, thread); |
0 | 578 sc.iterate_parameters(); |
579 sc.check_doing_return(true); | |
580 sc.iterate_returntype(); | |
581 } |