Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/javaCalls.cpp @ 5765:8d0a6bceb112
fixed result value for (high-level interpreter -> native -> Java transitions)
author | Christian Haeubl <haeubl@ssw.jku.at> |
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date | Thu, 05 Jul 2012 14:09:53 +0200 |
parents | 120820e30baa |
children | e522a00b91aa |
rev | line source |
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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" | |
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42 #ifdef HIGH_LEVEL_INTERPRETER |
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43 # include "graal/graalVMToInterpreter.hpp" |
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44 #endif |
1972 | 45 #ifdef TARGET_OS_FAMILY_linux |
46 # include "thread_linux.inline.hpp" | |
47 #endif | |
48 #ifdef TARGET_OS_FAMILY_solaris | |
49 # include "thread_solaris.inline.hpp" | |
50 #endif | |
51 #ifdef TARGET_OS_FAMILY_windows | |
52 # include "thread_windows.inline.hpp" | |
53 #endif | |
3960 | 54 #ifdef TARGET_OS_FAMILY_bsd |
55 # include "thread_bsd.inline.hpp" | |
56 #endif | |
0 | 57 |
58 // ----------------------------------------------------- | |
59 // Implementation of JavaCallWrapper | |
60 | |
61 JavaCallWrapper::JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS) { | |
62 JavaThread* thread = (JavaThread *)THREAD; | |
63 bool clear_pending_exception = true; | |
64 | |
65 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); | |
66 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
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67 guarantee(!thread->is_Compiler_thread(), "cannot make java calls from the compiler"); |
0 | 68 _result = result; |
69 | |
70 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, | |
71 // since it can potentially block. | |
72 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
73 | |
74 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local | |
75 // info, since we cannot find oops before the new information is set up completely. | |
76 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_Java); | |
77 | |
78 // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state | |
79 // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions | |
80 // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state). | |
81 if (thread->has_special_runtime_exit_condition()) { | |
82 thread->handle_special_runtime_exit_condition(); | |
83 if (HAS_PENDING_EXCEPTION) { | |
84 clear_pending_exception = false; | |
85 } | |
86 } | |
87 | |
88 | |
89 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing | |
90 // the JavaCallWrapper before the entry frame is on the stack. | |
91 _callee_method = callee_method(); | |
92 _receiver = receiver(); | |
93 | |
94 #ifdef CHECK_UNHANDLED_OOPS | |
95 THREAD->allow_unhandled_oop(&_callee_method); | |
96 THREAD->allow_unhandled_oop(&_receiver); | |
97 #endif // CHECK_UNHANDLED_OOPS | |
98 | |
99 _thread = (JavaThread *)thread; | |
100 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage | |
101 | |
102 // For the profiler, the last_Java_frame information in thread must always be in | |
103 // legal state. We have no last Java frame if last_Java_sp == NULL so | |
104 // the valid transition is to clear _last_Java_sp and then reset the rest of | |
105 // the (platform specific) state. | |
106 | |
107 _anchor.copy(_thread->frame_anchor()); | |
108 _thread->frame_anchor()->clear(); | |
109 | |
110 debug_only(_thread->inc_java_call_counter()); | |
111 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage | |
112 | |
113 assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL"); | |
114 | |
115 // clear any pending exception in thread (native calls start with no exception pending) | |
116 if(clear_pending_exception) { | |
117 _thread->clear_pending_exception(); | |
118 } | |
119 | |
120 if (_anchor.last_Java_sp() == NULL) { | |
121 _thread->record_base_of_stack_pointer(); | |
122 } | |
123 } | |
124 | |
125 | |
126 JavaCallWrapper::~JavaCallWrapper() { | |
127 assert(_thread == JavaThread::current(), "must still be the same thread"); | |
128 | |
129 // restore previous handle block & Java frame linkage | |
130 JNIHandleBlock *_old_handles = _thread->active_handles(); | |
131 _thread->set_active_handles(_handles); | |
132 | |
133 _thread->frame_anchor()->zap(); | |
134 | |
135 debug_only(_thread->dec_java_call_counter()); | |
136 | |
137 if (_anchor.last_Java_sp() == NULL) { | |
138 _thread->set_base_of_stack_pointer(NULL); | |
139 } | |
140 | |
141 | |
142 // Old thread-local info. has been restored. We are not back in the VM. | |
143 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); | |
144 | |
145 // State has been restored now make the anchor frame visible for the profiler. | |
146 // Do this after the transition because this allows us to put an assert | |
147 // the Java->vm transition which checks to see that stack is not walkable | |
148 // on sparc/ia64 which will catch violations of the reseting of last_Java_frame | |
149 // invariants (i.e. _flags always cleared on return to Java) | |
150 | |
151 _thread->frame_anchor()->copy(&_anchor); | |
152 | |
153 // Release handles after we are marked as being inside the VM again, since this | |
154 // operation might block | |
155 JNIHandleBlock::release_block(_old_handles, _thread); | |
156 } | |
157 | |
158 | |
159 void JavaCallWrapper::oops_do(OopClosure* f) { | |
160 f->do_oop((oop*)&_callee_method); | |
161 f->do_oop((oop*)&_receiver); | |
162 handles()->oops_do(f); | |
163 } | |
164 | |
165 | |
166 // Helper methods | |
167 static BasicType runtime_type_from(JavaValue* result) { | |
168 switch (result->get_type()) { | |
169 case T_BOOLEAN: // fall through | |
170 case T_CHAR : // fall through | |
171 case T_SHORT : // fall through | |
172 case T_INT : // fall through | |
173 #ifndef _LP64 | |
174 case T_OBJECT : // fall through | |
175 case T_ARRAY : // fall through | |
176 #endif | |
177 case T_BYTE : // fall through | |
178 case T_VOID : return T_INT; | |
179 case T_LONG : return T_LONG; | |
180 case T_FLOAT : return T_FLOAT; | |
181 case T_DOUBLE : return T_DOUBLE; | |
182 #ifdef _LP64 | |
183 case T_ARRAY : // fall through | |
184 case T_OBJECT: return T_OBJECT; | |
185 #endif | |
186 } | |
187 ShouldNotReachHere(); | |
188 return T_ILLEGAL; | |
189 } | |
190 | |
191 // ===== object constructor calls ===== | |
192 | |
193 void JavaCalls::call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS) { | |
194 assert(method->name() == vmSymbols::object_initializer_name(), "Should only be called for default constructor"); | |
195 assert(method->signature() == vmSymbols::void_method_signature(), "Should only be called for default constructor"); | |
196 | |
197 instanceKlass* ik = instanceKlass::cast(method->method_holder()); | |
198 if (ik->is_initialized() && ik->has_vanilla_constructor()) { | |
199 // safe to skip constructor call | |
200 } else { | |
201 static JavaValue result(T_VOID); | |
202 JavaCallArguments args(receiver); | |
203 call(&result, method, &args, CHECK); | |
204 } | |
205 } | |
206 | |
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207 // ============ Interface calls ============ |
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208 |
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209 void JavaCalls::call_interface(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
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210 CallInfo callinfo; |
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211 Handle receiver = args->receiver(); |
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212 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); |
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213 LinkResolver::resolve_interface_call( |
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214 callinfo, receiver, recvrKlass, spec_klass, name, signature, |
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215 KlassHandle(), false, true, CHECK); |
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216 methodHandle method = callinfo.selected_method(); |
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217 assert(method.not_null(), "should have thrown exception"); |
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218 |
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219 // Invoke the method |
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220 JavaCalls::call(result, method, args, CHECK); |
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221 } |
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222 |
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223 |
0 | 224 // ============ Virtual calls ============ |
225 | |
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226 void JavaCalls::call_virtual(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 227 CallInfo callinfo; |
228 Handle receiver = args->receiver(); | |
229 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); | |
230 LinkResolver::resolve_virtual_call( | |
231 callinfo, receiver, recvrKlass, spec_klass, name, signature, | |
232 KlassHandle(), false, true, CHECK); | |
233 methodHandle method = callinfo.selected_method(); | |
234 assert(method.not_null(), "should have thrown exception"); | |
235 | |
236 // Invoke the method | |
237 JavaCalls::call(result, method, args, CHECK); | |
238 } | |
239 | |
240 | |
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241 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 242 JavaCallArguments args(receiver); // One oop argument |
243 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
244 } | |
245 | |
246 | |
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247 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 248 JavaCallArguments args(receiver); // One oop argument |
249 args.push_oop(arg1); | |
250 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
251 } | |
252 | |
253 | |
254 | |
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255 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 256 JavaCallArguments args(receiver); // One oop argument |
257 args.push_oop(arg1); | |
258 args.push_oop(arg2); | |
259 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
260 } | |
261 | |
262 | |
263 // ============ Special calls ============ | |
264 | |
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265 void JavaCalls::call_special(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 266 CallInfo callinfo; |
267 LinkResolver::resolve_special_call(callinfo, klass, name, signature, KlassHandle(), false, CHECK); | |
268 methodHandle method = callinfo.selected_method(); | |
269 assert(method.not_null(), "should have thrown exception"); | |
270 | |
271 // Invoke the method | |
272 JavaCalls::call(result, method, args, CHECK); | |
273 } | |
274 | |
275 | |
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276 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 277 JavaCallArguments args(receiver); // One oop argument |
278 call_special(result, klass, name, signature, &args, CHECK); | |
279 } | |
280 | |
281 | |
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282 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 283 JavaCallArguments args(receiver); // One oop argument |
284 args.push_oop(arg1); | |
285 call_special(result, klass, name, signature, &args, CHECK); | |
286 } | |
287 | |
288 | |
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289 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 290 JavaCallArguments args(receiver); // One oop argument |
291 args.push_oop(arg1); | |
292 args.push_oop(arg2); | |
293 call_special(result, klass, name, signature, &args, CHECK); | |
294 } | |
295 | |
296 | |
297 // ============ Static calls ============ | |
298 | |
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299 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
0 | 300 CallInfo callinfo; |
301 LinkResolver::resolve_static_call(callinfo, klass, name, signature, KlassHandle(), false, true, CHECK); | |
302 methodHandle method = callinfo.selected_method(); | |
303 assert(method.not_null(), "should have thrown exception"); | |
304 | |
305 // Invoke the method | |
306 JavaCalls::call(result, method, args, CHECK); | |
307 } | |
308 | |
309 | |
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310 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 311 JavaCallArguments args; // No argument |
312 call_static(result, klass, name, signature, &args, CHECK); | |
313 } | |
314 | |
315 | |
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316 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
0 | 317 JavaCallArguments args(arg1); // One oop argument |
318 call_static(result, klass, name, signature, &args, CHECK); | |
319 } | |
320 | |
321 | |
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322 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
0 | 323 JavaCallArguments args; // One oop argument |
324 args.push_oop(arg1); | |
325 args.push_oop(arg2); | |
326 call_static(result, klass, name, signature, &args, CHECK); | |
327 } | |
328 | |
329 | |
330 // ------------------------------------------------- | |
331 // Implementation of JavaCalls (low level) | |
332 | |
333 | |
334 void JavaCalls::call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS) { | |
335 // Check if we need to wrap a potential OS exception handler around thread | |
336 // This is used for e.g. Win32 structured exception handlers | |
337 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); | |
338 // Need to wrap each and everytime, since there might be native code down the | |
339 // stack that has installed its own exception handlers | |
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340 os::os_exception_wrapper(call_helper, result, &method, NULL, args, THREAD); |
0 | 341 } |
342 | |
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343 void JavaCalls::call(JavaValue* result, methodHandle method, nmethod* nm, JavaCallArguments* args, TRAPS) { |
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344 // Check if we need to wrap a potential OS exception handler around thread |
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345 // This is used for e.g. Win32 structured exception handlers |
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346 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); |
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347 // Need to wrap each and everytime, since there might be native code down the |
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348 // stack that has installed its own exception handlers |
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349 os::os_exception_wrapper(call_helper, result, &method, nm, args, THREAD); |
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350 } |
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351 |
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352 void JavaCalls::call_helper(JavaValue* result, methodHandle* m, nmethod* nm, JavaCallArguments* args, TRAPS) { |
0 | 353 methodHandle method = *m; |
354 JavaThread* thread = (JavaThread*)THREAD; | |
355 assert(thread->is_Java_thread(), "must be called by a java thread"); | |
356 assert(method.not_null(), "must have a method to call"); | |
357 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); | |
358 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); | |
359 | |
360 | |
361 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
362 | |
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363 // Verify the arguments |
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364 |
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365 if (CheckJNICalls) { |
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366 args->verify(method, result->get_type(), thread); |
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367 } |
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368 else debug_only(args->verify(method, result->get_type(), thread)); |
0 | 369 |
370 // Ignore call if method is empty | |
371 if (method->is_empty_method()) { | |
372 assert(result->get_type() == T_VOID, "an empty method must return a void value"); | |
373 return; | |
374 } | |
375 | |
376 | |
377 #ifdef ASSERT | |
378 { klassOop holder = method->method_holder(); | |
379 // A klass might not be initialized since JavaCall's might be used during the executing of | |
380 // the <clinit>. For example, a Thread.start might start executing on an object that is | |
381 // not fully initialized! (bad Java programming style) | |
382 assert(instanceKlass::cast(holder)->is_linked(), "rewritting must have taken place"); | |
383 } | |
384 #endif | |
385 | |
386 | |
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387 assert(!thread->is_Compiler_thread(), "cannot compile from the compiler"); |
1783 | 388 if (CompilationPolicy::must_be_compiled(method)) { |
0 | 389 CompileBroker::compile_method(method, InvocationEntryBci, |
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390 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 391 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 392 } |
393 | |
394 // Since the call stub sets up like the interpreter we call the from_interpreted_entry | |
395 // so we can go compiled via a i2c. Otherwise initial entry method will always | |
396 // run interpreted. | |
397 address entry_point = method->from_interpreted_entry(); | |
398 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { | |
399 entry_point = method->interpreter_entry(); | |
400 } | |
401 | |
402 // Figure out if the result value is an oop or not (Note: This is a different value | |
403 // than result_type. result_type will be T_INT of oops. (it is about size) | |
404 BasicType result_type = runtime_type_from(result); | |
405 bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY); | |
406 | |
407 // NOTE: if we move the computation of the result_val_address inside | |
408 // the call to call_stub, the optimizer produces wrong code. | |
409 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); | |
410 | |
411 // Find receiver | |
412 Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); | |
413 | |
414 // When we reenter Java, we need to reenable the yellow zone which | |
415 // might already be disabled when we are in VM. | |
416 if (thread->stack_yellow_zone_disabled()) { | |
417 thread->reguard_stack(); | |
418 } | |
419 | |
420 // Check that there are shadow pages available before changing thread state | |
421 // to Java | |
422 if (!os::stack_shadow_pages_available(THREAD, method)) { | |
423 // Throw stack overflow exception with preinitialized exception. | |
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424 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__, method); |
0 | 425 return; |
426 } else { | |
427 // Touch pages checked if the OS needs them to be touched to be mapped. | |
428 os::bang_stack_shadow_pages(); | |
429 } | |
430 | |
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431 if (nm != NULL) { |
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432 #ifdef GRAAL |
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433 if (nm->is_alive()) { |
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434 ((JavaThread*) THREAD)->set_graal_alternate_call_target(nm->verified_entry_point()); |
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435 entry_point = method->adapter()->get_i2c_entry(); |
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436 } else { |
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437 THROW(vmSymbols::MethodInvalidatedException()); |
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438 } |
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439 #else |
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440 ShouldNotReachHere(); |
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441 #endif |
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442 } |
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443 |
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444 #ifdef HIGH_LEVEL_INTERPRETER |
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445 if (thread->high_level_interpreter_in_vm() && !method->is_native() && Interpreter::contains(entry_point)) { |
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446 assert(nm == NULL || !nm->is_alive(), "otherwise nm should be invoked"); |
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447 VMToInterpreter::execute(result, m, args, result->get_type(), thread); |
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448 oop_result_flag = false; // result already holds the correct value |
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449 } else |
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450 #endif |
0 | 451 // do call |
452 { JavaCallWrapper link(method, receiver, result, CHECK); | |
453 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner | |
454 | |
455 StubRoutines::call_stub()( | |
456 (address)&link, | |
457 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) | |
458 result_val_address, // see NOTE above (compiler problem) | |
459 result_type, | |
460 method(), | |
461 entry_point, | |
462 args->parameters(), | |
463 args->size_of_parameters(), | |
464 CHECK | |
465 ); | |
466 | |
467 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) | |
468 // Preserve oop return value across possible gc points | |
469 if (oop_result_flag) { | |
470 thread->set_vm_result((oop) result->get_jobject()); | |
471 } | |
472 } | |
473 } // Exit JavaCallWrapper (can block - potential return oop must be preserved) | |
474 | |
475 // Check if a thread stop or suspend should be executed | |
476 // The following assert was not realistic. Thread.stop can set that bit at any moment. | |
477 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); | |
478 | |
479 // Restore possible oop return | |
480 if (oop_result_flag) { | |
481 result->set_jobject((jobject)thread->vm_result()); | |
482 thread->set_vm_result(NULL); | |
483 } | |
484 } | |
485 | |
486 //-------------------------------------------------------------------------------------- | |
487 // Implementation of JavaCallArguments | |
488 | |
489 intptr_t* JavaCallArguments::parameters() { | |
490 // First convert all handles to oops | |
491 for(int i = 0; i < _size; i++) { | |
492 if (_is_oop[i]) { | |
493 // Handle conversion | |
494 _value[i] = (intptr_t)Handle::raw_resolve((oop *)_value[i]); | |
495 } | |
496 } | |
497 // Return argument vector | |
1506 | 498 return _value; |
0 | 499 } |
500 | |
501 | |
502 class SignatureChekker : public SignatureIterator { | |
503 private: | |
504 bool *_is_oop; | |
505 int _pos; | |
506 BasicType _return_type; | |
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507 intptr_t* _value; |
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508 Thread* _thread; |
0 | 509 |
510 public: | |
511 bool _is_return; | |
512 | |
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513 SignatureChekker(Symbol* signature, BasicType return_type, bool is_static, bool* is_oop, intptr_t* value, Thread* thread) : SignatureIterator(signature) { |
0 | 514 _is_oop = is_oop; |
515 _is_return = false; | |
516 _return_type = return_type; | |
517 _pos = 0; | |
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518 _value = value; |
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519 _thread = thread; |
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520 |
0 | 521 if (!is_static) { |
522 check_value(true); // Receiver must be an oop | |
523 } | |
524 } | |
525 | |
526 void check_value(bool type) { | |
527 guarantee(_is_oop[_pos++] == type, "signature does not match pushed arguments"); | |
528 } | |
529 | |
530 void check_doing_return(bool state) { _is_return = state; } | |
531 | |
532 void check_return_type(BasicType t) { | |
533 guarantee(_is_return && t == _return_type, "return type does not match"); | |
534 } | |
535 | |
536 void check_int(BasicType t) { | |
537 if (_is_return) { | |
538 check_return_type(t); | |
539 return; | |
540 } | |
541 check_value(false); | |
542 } | |
543 | |
544 void check_double(BasicType t) { check_long(t); } | |
545 | |
546 void check_long(BasicType t) { | |
547 if (_is_return) { | |
548 check_return_type(t); | |
549 return; | |
550 } | |
551 | |
552 check_value(false); | |
553 check_value(false); | |
554 } | |
555 | |
556 void check_obj(BasicType t) { | |
557 if (_is_return) { | |
558 check_return_type(t); | |
559 return; | |
560 } | |
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561 |
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562 // verify handle and the oop pointed to by handle |
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563 int p = _pos; |
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564 bool bad = false; |
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565 // If argument is oop |
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566 if (_is_oop[p]) { |
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567 intptr_t v = _value[p]; |
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568 if (v != 0 ) { |
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569 size_t t = (size_t)v; |
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570 bad = (t < (size_t)os::vm_page_size() ) || !Handle::raw_resolve((oop *)v)->is_oop_or_null(true); |
465
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571 if (CheckJNICalls && bad) { |
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572 ReportJNIFatalError((JavaThread*)_thread, "Bad JNI oop argument"); |
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573 } |
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574 } |
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575 // for the regular debug case. |
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576 assert(!bad, "Bad JNI oop argument"); |
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577 } |
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578 |
0 | 579 check_value(true); |
580 } | |
581 | |
582 void do_bool() { check_int(T_BOOLEAN); } | |
583 void do_char() { check_int(T_CHAR); } | |
584 void do_float() { check_int(T_FLOAT); } | |
585 void do_double() { check_double(T_DOUBLE); } | |
586 void do_byte() { check_int(T_BYTE); } | |
587 void do_short() { check_int(T_SHORT); } | |
588 void do_int() { check_int(T_INT); } | |
589 void do_long() { check_long(T_LONG); } | |
590 void do_void() { check_return_type(T_VOID); } | |
591 void do_object(int begin, int end) { check_obj(T_OBJECT); } | |
592 void do_array(int begin, int end) { check_obj(T_OBJECT); } | |
593 }; | |
594 | |
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595 |
0 | 596 void JavaCallArguments::verify(methodHandle method, BasicType return_type, |
597 Thread *thread) { | |
598 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); | |
599 | |
600 // Treat T_OBJECT and T_ARRAY as the same | |
601 if (return_type == T_ARRAY) return_type = T_OBJECT; | |
602 | |
603 // Check that oop information is correct | |
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604 Symbol* signature = method->signature(); |
0 | 605 |
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606 SignatureChekker sc(signature, return_type, method->is_static(),_is_oop, _value, thread); |
0 | 607 sc.iterate_parameters(); |
608 sc.check_doing_return(true); | |
609 sc.iterate_returntype(); | |
610 } |