Mercurial > hg > truffle
annotate src/share/vm/runtime/javaCalls.cpp @ 2181:d25d4ca69222
Merge.
| author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
|---|---|
| date | Wed, 16 Feb 2011 13:47:20 +0100 |
| parents | 06f017f7daa7 3582bf76420e |
| children | 9569fdf936ff |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 1997, 2010, 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 | |
| 0 | 51 |
| 52 // ----------------------------------------------------- | |
| 53 // Implementation of JavaCallWrapper | |
| 54 | |
| 55 JavaCallWrapper::JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS) { | |
| 56 JavaThread* thread = (JavaThread *)THREAD; | |
| 57 bool clear_pending_exception = true; | |
| 58 | |
| 59 guarantee(thread->is_Java_thread(), "crucial check - the VM thread cannot and must not escape to Java code"); | |
| 60 assert(!thread->owns_locks(), "must release all locks when leaving VM"); | |
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61 // (tw) may we do this? |
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62 // guarantee(!thread->is_Compiler_thread(), "cannot make java calls from the compiler"); |
| 0 | 63 _result = result; |
| 64 | |
| 65 // Allocate handle block for Java code. This must be done before we change thread_state to _thread_in_Java_or_stub, | |
| 66 // since it can potentially block. | |
| 67 JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); | |
| 68 | |
| 69 // After this, we are official in JavaCode. This needs to be done before we change any of the thread local | |
| 70 // info, since we cannot find oops before the new information is set up completely. | |
| 71 ThreadStateTransition::transition(thread, _thread_in_vm, _thread_in_Java); | |
| 72 | |
| 73 // Make sure that we handle asynchronous stops and suspends _before_ we clear all thread state | |
| 74 // in JavaCallWrapper::JavaCallWrapper(). This way, we can decide if we need to do any pd actions | |
| 75 // to prepare for stop/suspend (flush register windows on sparcs, cache sp, or other state). | |
| 76 if (thread->has_special_runtime_exit_condition()) { | |
| 77 thread->handle_special_runtime_exit_condition(); | |
| 78 if (HAS_PENDING_EXCEPTION) { | |
| 79 clear_pending_exception = false; | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 | |
| 84 // Make sure to set the oop's after the thread transition - since we can block there. No one is GC'ing | |
| 85 // the JavaCallWrapper before the entry frame is on the stack. | |
| 86 _callee_method = callee_method(); | |
| 87 _receiver = receiver(); | |
| 88 | |
| 89 #ifdef CHECK_UNHANDLED_OOPS | |
| 90 THREAD->allow_unhandled_oop(&_callee_method); | |
| 91 THREAD->allow_unhandled_oop(&_receiver); | |
| 92 #endif // CHECK_UNHANDLED_OOPS | |
| 93 | |
| 94 _thread = (JavaThread *)thread; | |
| 95 _handles = _thread->active_handles(); // save previous handle block & Java frame linkage | |
| 96 | |
| 97 // For the profiler, the last_Java_frame information in thread must always be in | |
| 98 // legal state. We have no last Java frame if last_Java_sp == NULL so | |
| 99 // the valid transition is to clear _last_Java_sp and then reset the rest of | |
| 100 // the (platform specific) state. | |
| 101 | |
| 102 _anchor.copy(_thread->frame_anchor()); | |
| 103 _thread->frame_anchor()->clear(); | |
| 104 | |
| 105 debug_only(_thread->inc_java_call_counter()); | |
| 106 _thread->set_active_handles(new_handles); // install new handle block and reset Java frame linkage | |
| 107 | |
| 108 assert (_thread->thread_state() != _thread_in_native, "cannot set native pc to NULL"); | |
| 109 | |
| 110 // clear any pending exception in thread (native calls start with no exception pending) | |
| 111 if(clear_pending_exception) { | |
| 112 _thread->clear_pending_exception(); | |
| 113 } | |
| 114 | |
| 115 if (_anchor.last_Java_sp() == NULL) { | |
| 116 _thread->record_base_of_stack_pointer(); | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 | |
| 121 JavaCallWrapper::~JavaCallWrapper() { | |
| 122 assert(_thread == JavaThread::current(), "must still be the same thread"); | |
| 123 | |
| 124 // restore previous handle block & Java frame linkage | |
| 125 JNIHandleBlock *_old_handles = _thread->active_handles(); | |
| 126 _thread->set_active_handles(_handles); | |
| 127 | |
| 128 _thread->frame_anchor()->zap(); | |
| 129 | |
| 130 debug_only(_thread->dec_java_call_counter()); | |
| 131 | |
| 132 if (_anchor.last_Java_sp() == NULL) { | |
| 133 _thread->set_base_of_stack_pointer(NULL); | |
| 134 } | |
| 135 | |
| 136 | |
| 137 // Old thread-local info. has been restored. We are not back in the VM. | |
| 138 ThreadStateTransition::transition_from_java(_thread, _thread_in_vm); | |
| 139 | |
| 140 // State has been restored now make the anchor frame visible for the profiler. | |
| 141 // Do this after the transition because this allows us to put an assert | |
| 142 // the Java->vm transition which checks to see that stack is not walkable | |
| 143 // on sparc/ia64 which will catch violations of the reseting of last_Java_frame | |
| 144 // invariants (i.e. _flags always cleared on return to Java) | |
| 145 | |
| 146 _thread->frame_anchor()->copy(&_anchor); | |
| 147 | |
| 148 // Release handles after we are marked as being inside the VM again, since this | |
| 149 // operation might block | |
| 150 JNIHandleBlock::release_block(_old_handles, _thread); | |
| 151 } | |
| 152 | |
| 153 | |
| 154 void JavaCallWrapper::oops_do(OopClosure* f) { | |
| 155 f->do_oop((oop*)&_callee_method); | |
| 156 f->do_oop((oop*)&_receiver); | |
| 157 handles()->oops_do(f); | |
| 158 } | |
| 159 | |
| 160 | |
| 161 // Helper methods | |
| 162 static BasicType runtime_type_from(JavaValue* result) { | |
| 163 switch (result->get_type()) { | |
| 164 case T_BOOLEAN: // fall through | |
| 165 case T_CHAR : // fall through | |
| 166 case T_SHORT : // fall through | |
| 167 case T_INT : // fall through | |
| 168 #ifndef _LP64 | |
| 169 case T_OBJECT : // fall through | |
| 170 case T_ARRAY : // fall through | |
| 171 #endif | |
| 172 case T_BYTE : // fall through | |
| 173 case T_VOID : return T_INT; | |
| 174 case T_LONG : return T_LONG; | |
| 175 case T_FLOAT : return T_FLOAT; | |
| 176 case T_DOUBLE : return T_DOUBLE; | |
| 177 #ifdef _LP64 | |
| 178 case T_ARRAY : // fall through | |
| 179 case T_OBJECT: return T_OBJECT; | |
| 180 #endif | |
| 181 } | |
| 182 ShouldNotReachHere(); | |
| 183 return T_ILLEGAL; | |
| 184 } | |
| 185 | |
| 186 // ===== object constructor calls ===== | |
| 187 | |
| 188 void JavaCalls::call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS) { | |
| 189 assert(method->name() == vmSymbols::object_initializer_name(), "Should only be called for default constructor"); | |
| 190 assert(method->signature() == vmSymbols::void_method_signature(), "Should only be called for default constructor"); | |
| 191 | |
| 192 instanceKlass* ik = instanceKlass::cast(method->method_holder()); | |
| 193 if (ik->is_initialized() && ik->has_vanilla_constructor()) { | |
| 194 // safe to skip constructor call | |
| 195 } else { | |
| 196 static JavaValue result(T_VOID); | |
| 197 JavaCallArguments args(receiver); | |
| 198 call(&result, method, &args, CHECK); | |
| 199 } | |
| 200 } | |
| 201 | |
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202 // ============ Interface calls ============ |
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203 |
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204 void JavaCalls::call_interface(JavaValue* result, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS) { |
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205 CallInfo callinfo; |
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206 Handle receiver = args->receiver(); |
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207 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); |
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208 LinkResolver::resolve_interface_call( |
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209 callinfo, receiver, recvrKlass, spec_klass, name, signature, |
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210 KlassHandle(), false, true, CHECK); |
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211 methodHandle method = callinfo.selected_method(); |
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212 assert(method.not_null(), "should have thrown exception"); |
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213 |
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214 // Invoke the method |
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215 JavaCalls::call(result, method, args, CHECK); |
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216 } |
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217 |
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218 |
| 0 | 219 // ============ Virtual calls ============ |
| 220 | |
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221 void JavaCalls::call_virtual(JavaValue* result, KlassHandle spec_klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
| 0 | 222 CallInfo callinfo; |
| 223 Handle receiver = args->receiver(); | |
| 224 KlassHandle recvrKlass(THREAD, receiver.is_null() ? (klassOop)NULL : receiver->klass()); | |
| 225 LinkResolver::resolve_virtual_call( | |
| 226 callinfo, receiver, recvrKlass, spec_klass, name, signature, | |
| 227 KlassHandle(), false, true, 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 | |
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236 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 237 JavaCallArguments args(receiver); // One oop argument |
| 238 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
| 239 } | |
| 240 | |
| 241 | |
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242 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
| 0 | 243 JavaCallArguments args(receiver); // One oop argument |
| 244 args.push_oop(arg1); | |
| 245 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
| 246 } | |
| 247 | |
| 248 | |
| 249 | |
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250 void JavaCalls::call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
| 0 | 251 JavaCallArguments args(receiver); // One oop argument |
| 252 args.push_oop(arg1); | |
| 253 args.push_oop(arg2); | |
| 254 call_virtual(result, spec_klass, name, signature, &args, CHECK); | |
| 255 } | |
| 256 | |
| 257 | |
| 258 // ============ Special calls ============ | |
| 259 | |
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260 void JavaCalls::call_special(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
| 0 | 261 CallInfo callinfo; |
| 262 LinkResolver::resolve_special_call(callinfo, klass, name, signature, KlassHandle(), false, 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 | |
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271 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 272 JavaCallArguments args(receiver); // One oop argument |
| 273 call_special(result, klass, name, signature, &args, CHECK); | |
| 274 } | |
| 275 | |
| 276 | |
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277 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
| 0 | 278 JavaCallArguments args(receiver); // One oop argument |
| 279 args.push_oop(arg1); | |
| 280 call_special(result, klass, name, signature, &args, CHECK); | |
| 281 } | |
| 282 | |
| 283 | |
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284 void JavaCalls::call_special(JavaValue* result, Handle receiver, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
| 0 | 285 JavaCallArguments args(receiver); // One oop argument |
| 286 args.push_oop(arg1); | |
| 287 args.push_oop(arg2); | |
| 288 call_special(result, klass, name, signature, &args, CHECK); | |
| 289 } | |
| 290 | |
| 291 | |
| 292 // ============ Static calls ============ | |
| 293 | |
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294 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, JavaCallArguments* args, TRAPS) { |
| 0 | 295 CallInfo callinfo; |
| 296 LinkResolver::resolve_static_call(callinfo, klass, name, signature, KlassHandle(), false, true, CHECK); | |
| 297 methodHandle method = callinfo.selected_method(); | |
| 298 assert(method.not_null(), "should have thrown exception"); | |
| 299 | |
| 300 // Invoke the method | |
| 301 JavaCalls::call(result, method, args, CHECK); | |
| 302 } | |
| 303 | |
| 304 | |
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305 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 306 JavaCallArguments args; // No argument |
| 307 call_static(result, klass, name, signature, &args, CHECK); | |
| 308 } | |
| 309 | |
| 310 | |
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311 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, TRAPS) { |
| 0 | 312 JavaCallArguments args(arg1); // One oop argument |
| 313 call_static(result, klass, name, signature, &args, CHECK); | |
| 314 } | |
| 315 | |
| 316 | |
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317 void JavaCalls::call_static(JavaValue* result, KlassHandle klass, Symbol* name, Symbol* signature, Handle arg1, Handle arg2, TRAPS) { |
| 0 | 318 JavaCallArguments args; // One oop argument |
| 319 args.push_oop(arg1); | |
| 320 args.push_oop(arg2); | |
| 321 call_static(result, klass, name, signature, &args, CHECK); | |
| 322 } | |
| 323 | |
| 324 | |
| 325 // ------------------------------------------------- | |
| 326 // Implementation of JavaCalls (low level) | |
| 327 | |
| 328 | |
| 329 void JavaCalls::call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS) { | |
| 330 // Check if we need to wrap a potential OS exception handler around thread | |
| 331 // This is used for e.g. Win32 structured exception handlers | |
| 332 assert(THREAD->is_Java_thread(), "only JavaThreads can make JavaCalls"); | |
| 333 // Need to wrap each and everytime, since there might be native code down the | |
| 334 // stack that has installed its own exception handlers | |
| 335 os::os_exception_wrapper(call_helper, result, &method, args, THREAD); | |
| 336 } | |
| 337 | |
| 338 void JavaCalls::call_helper(JavaValue* result, methodHandle* m, JavaCallArguments* args, TRAPS) { | |
| 339 methodHandle method = *m; | |
| 340 JavaThread* thread = (JavaThread*)THREAD; | |
| 341 assert(thread->is_Java_thread(), "must be called by a java thread"); | |
| 342 assert(method.not_null(), "must have a method to call"); | |
| 343 assert(!SafepointSynchronize::is_at_safepoint(), "call to Java code during VM operation"); | |
| 344 assert(!thread->handle_area()->no_handle_mark_active(), "cannot call out to Java here"); | |
| 345 | |
| 346 | |
| 347 CHECK_UNHANDLED_OOPS_ONLY(thread->clear_unhandled_oops();) | |
| 348 | |
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349 // Verify the arguments |
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350 |
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351 if (CheckJNICalls) { |
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352 args->verify(method, result->get_type(), thread); |
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353 } |
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354 else debug_only(args->verify(method, result->get_type(), thread)); |
| 0 | 355 |
| 356 // Ignore call if method is empty | |
| 357 if (method->is_empty_method()) { | |
| 358 assert(result->get_type() == T_VOID, "an empty method must return a void value"); | |
| 359 return; | |
| 360 } | |
| 361 | |
| 362 | |
| 363 #ifdef ASSERT | |
| 364 { klassOop holder = method->method_holder(); | |
| 365 // A klass might not be initialized since JavaCall's might be used during the executing of | |
| 366 // the <clinit>. For example, a Thread.start might start executing on an object that is | |
| 367 // not fully initialized! (bad Java programming style) | |
| 368 assert(instanceKlass::cast(holder)->is_linked(), "rewritting must have taken place"); | |
| 369 } | |
| 370 #endif | |
| 371 | |
| 372 | |
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373 // (tw) may we do this? |
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374 //assert(!thread->is_Compiler_thread(), "cannot compile from the compiler"); |
| 1783 | 375 if (CompilationPolicy::must_be_compiled(method)) { |
| 0 | 376 CompileBroker::compile_method(method, InvocationEntryBci, |
| 1783 | 377 CompLevel_initial_compile, |
| 378 methodHandle(), 0, "must_be_compiled", CHECK); | |
| 0 | 379 } |
| 380 | |
| 381 // Since the call stub sets up like the interpreter we call the from_interpreted_entry | |
| 382 // so we can go compiled via a i2c. Otherwise initial entry method will always | |
| 383 // run interpreted. | |
| 384 address entry_point = method->from_interpreted_entry(); | |
| 385 if (JvmtiExport::can_post_interpreter_events() && thread->is_interp_only_mode()) { | |
| 386 entry_point = method->interpreter_entry(); | |
| 387 } | |
| 388 | |
| 389 // Figure out if the result value is an oop or not (Note: This is a different value | |
| 390 // than result_type. result_type will be T_INT of oops. (it is about size) | |
| 391 BasicType result_type = runtime_type_from(result); | |
| 392 bool oop_result_flag = (result->get_type() == T_OBJECT || result->get_type() == T_ARRAY); | |
| 393 | |
| 394 // NOTE: if we move the computation of the result_val_address inside | |
| 395 // the call to call_stub, the optimizer produces wrong code. | |
| 396 intptr_t* result_val_address = (intptr_t*)(result->get_value_addr()); | |
| 397 | |
| 398 // Find receiver | |
| 399 Handle receiver = (!method->is_static()) ? args->receiver() : Handle(); | |
| 400 | |
| 401 // When we reenter Java, we need to reenable the yellow zone which | |
| 402 // might already be disabled when we are in VM. | |
| 403 if (thread->stack_yellow_zone_disabled()) { | |
| 404 thread->reguard_stack(); | |
| 405 } | |
| 406 | |
| 407 // Check that there are shadow pages available before changing thread state | |
| 408 // to Java | |
| 409 if (!os::stack_shadow_pages_available(THREAD, method)) { | |
| 410 // Throw stack overflow exception with preinitialized exception. | |
| 411 Exceptions::throw_stack_overflow_exception(THREAD, __FILE__, __LINE__); | |
| 412 return; | |
| 413 } else { | |
| 414 // Touch pages checked if the OS needs them to be touched to be mapped. | |
| 415 os::bang_stack_shadow_pages(); | |
| 416 } | |
| 417 | |
| 418 // do call | |
| 419 { JavaCallWrapper link(method, receiver, result, CHECK); | |
| 420 { HandleMark hm(thread); // HandleMark used by HandleMarkCleaner | |
| 421 | |
| 422 StubRoutines::call_stub()( | |
| 423 (address)&link, | |
| 424 // (intptr_t*)&(result->_value), // see NOTE above (compiler problem) | |
| 425 result_val_address, // see NOTE above (compiler problem) | |
| 426 result_type, | |
| 427 method(), | |
| 428 entry_point, | |
| 429 args->parameters(), | |
| 430 args->size_of_parameters(), | |
| 431 CHECK | |
| 432 ); | |
| 433 | |
| 434 result = link.result(); // circumvent MS C++ 5.0 compiler bug (result is clobbered across call) | |
| 435 // Preserve oop return value across possible gc points | |
| 436 if (oop_result_flag) { | |
| 437 thread->set_vm_result((oop) result->get_jobject()); | |
| 438 } | |
| 439 } | |
| 440 } // Exit JavaCallWrapper (can block - potential return oop must be preserved) | |
| 441 | |
| 442 // Check if a thread stop or suspend should be executed | |
| 443 // The following assert was not realistic. Thread.stop can set that bit at any moment. | |
| 444 //assert(!thread->has_special_runtime_exit_condition(), "no async. exceptions should be installed"); | |
| 445 | |
| 446 // Restore possible oop return | |
| 447 if (oop_result_flag) { | |
| 448 result->set_jobject((jobject)thread->vm_result()); | |
| 449 thread->set_vm_result(NULL); | |
| 450 } | |
| 451 } | |
| 452 | |
| 453 | |
| 454 //-------------------------------------------------------------------------------------- | |
| 455 // Implementation of JavaCallArguments | |
| 456 | |
| 457 intptr_t* JavaCallArguments::parameters() { | |
| 458 // First convert all handles to oops | |
| 459 for(int i = 0; i < _size; i++) { | |
| 460 if (_is_oop[i]) { | |
| 461 // Handle conversion | |
| 462 _value[i] = (intptr_t)Handle::raw_resolve((oop *)_value[i]); | |
| 463 } | |
| 464 } | |
| 465 // Return argument vector | |
| 1506 | 466 return _value; |
| 0 | 467 } |
| 468 | |
| 469 | |
| 470 class SignatureChekker : public SignatureIterator { | |
| 471 private: | |
| 472 bool *_is_oop; | |
| 473 int _pos; | |
| 474 BasicType _return_type; | |
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475 intptr_t* _value; |
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476 Thread* _thread; |
| 0 | 477 |
| 478 public: | |
| 479 bool _is_return; | |
| 480 | |
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481 SignatureChekker(Symbol* signature, BasicType return_type, bool is_static, bool* is_oop, intptr_t* value, Thread* thread) : SignatureIterator(signature) { |
| 0 | 482 _is_oop = is_oop; |
| 483 _is_return = false; | |
| 484 _return_type = return_type; | |
| 485 _pos = 0; | |
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486 _value = value; |
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487 _thread = thread; |
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488 |
| 0 | 489 if (!is_static) { |
| 490 check_value(true); // Receiver must be an oop | |
| 491 } | |
| 492 } | |
| 493 | |
| 494 void check_value(bool type) { | |
| 495 guarantee(_is_oop[_pos++] == type, "signature does not match pushed arguments"); | |
| 496 } | |
| 497 | |
| 498 void check_doing_return(bool state) { _is_return = state; } | |
| 499 | |
| 500 void check_return_type(BasicType t) { | |
| 501 guarantee(_is_return && t == _return_type, "return type does not match"); | |
| 502 } | |
| 503 | |
| 504 void check_int(BasicType t) { | |
| 505 if (_is_return) { | |
| 506 check_return_type(t); | |
| 507 return; | |
| 508 } | |
| 509 check_value(false); | |
| 510 } | |
| 511 | |
| 512 void check_double(BasicType t) { check_long(t); } | |
| 513 | |
| 514 void check_long(BasicType t) { | |
| 515 if (_is_return) { | |
| 516 check_return_type(t); | |
| 517 return; | |
| 518 } | |
| 519 | |
| 520 check_value(false); | |
| 521 check_value(false); | |
| 522 } | |
| 523 | |
| 524 void check_obj(BasicType t) { | |
| 525 if (_is_return) { | |
| 526 check_return_type(t); | |
| 527 return; | |
| 528 } | |
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529 |
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530 // verify handle and the oop pointed to by handle |
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531 int p = _pos; |
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532 bool bad = false; |
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533 // If argument is oop |
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534 if (_is_oop[p]) { |
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535 intptr_t v = _value[p]; |
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536 if (v != 0 ) { |
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537 size_t t = (size_t)v; |
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538 bad = (t < (size_t)os::vm_page_size() ) || !Handle::raw_resolve((oop *)v)->is_oop_or_null(true); |
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539 if (CheckJNICalls && bad) { |
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540 ReportJNIFatalError((JavaThread*)_thread, "Bad JNI oop argument"); |
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541 } |
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542 } |
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543 // for the regular debug case. |
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544 assert(!bad, "Bad JNI oop argument"); |
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545 } |
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546 |
| 0 | 547 check_value(true); |
| 548 } | |
| 549 | |
| 550 void do_bool() { check_int(T_BOOLEAN); } | |
| 551 void do_char() { check_int(T_CHAR); } | |
| 552 void do_float() { check_int(T_FLOAT); } | |
| 553 void do_double() { check_double(T_DOUBLE); } | |
| 554 void do_byte() { check_int(T_BYTE); } | |
| 555 void do_short() { check_int(T_SHORT); } | |
| 556 void do_int() { check_int(T_INT); } | |
| 557 void do_long() { check_long(T_LONG); } | |
| 558 void do_void() { check_return_type(T_VOID); } | |
| 559 void do_object(int begin, int end) { check_obj(T_OBJECT); } | |
| 560 void do_array(int begin, int end) { check_obj(T_OBJECT); } | |
| 561 }; | |
| 562 | |
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563 |
| 0 | 564 void JavaCallArguments::verify(methodHandle method, BasicType return_type, |
| 565 Thread *thread) { | |
| 566 guarantee(method->size_of_parameters() == size_of_parameters(), "wrong no. of arguments pushed"); | |
| 567 | |
| 568 // Treat T_OBJECT and T_ARRAY as the same | |
| 569 if (return_type == T_ARRAY) return_type = T_OBJECT; | |
| 570 | |
| 571 // Check that oop information is correct | |
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572 Symbol* signature = method->signature(); |
| 0 | 573 |
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574 SignatureChekker sc(signature, return_type, method->is_static(),_is_oop, _value, thread); |
| 0 | 575 sc.iterate_parameters(); |
| 576 sc.check_doing_return(true); | |
| 577 sc.iterate_returntype(); | |
| 578 } | |
| 579 |