1 /* 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "classfile/defaultMethods.hpp" 27 #include "classfile/symbolTable.hpp" 28 #include "classfile/systemDictionary.hpp" 29 #include "classfile/vmSymbols.hpp" 30 #include "compiler/compileBroker.hpp" 31 #include "gc/shared/collectedHeap.inline.hpp" 32 #include "interpreter/bytecode.hpp" 33 #include "interpreter/interpreterRuntime.hpp" 34 #include "interpreter/linkResolver.hpp" 35 #include "logging/log.hpp" 36 #include "memory/resourceArea.hpp" 37 #include "memory/universe.inline.hpp" 38 #include "oops/instanceKlass.hpp" 39 #include "oops/method.hpp" 40 #include "oops/objArrayOop.hpp" 41 #include "oops/oop.inline.hpp" 42 #include "prims/methodHandles.hpp" 43 #include "prims/nativeLookup.hpp" 44 #include "runtime/compilationPolicy.hpp" 45 #include "runtime/fieldDescriptor.hpp" 46 #include "runtime/frame.inline.hpp" 47 #include "runtime/handles.inline.hpp" 48 #include "runtime/reflection.hpp" 49 #include "runtime/signature.hpp" 50 #include "runtime/thread.inline.hpp" 51 #include "runtime/vmThread.hpp" 52 53 54 //------------------------------------------------------------------------------------------------------------------------ 55 // Implementation of CallInfo 56 57 58 void CallInfo::set_static(KlassHandle resolved_klass, const methodHandle& resolved_method, TRAPS) { 59 int vtable_index = Method::nonvirtual_vtable_index; 60 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); 61 } 62 63 64 void CallInfo::set_interface(KlassHandle resolved_klass, 65 KlassHandle selected_klass, 66 const methodHandle& resolved_method, 67 const methodHandle& selected_method, 68 int itable_index, TRAPS) { 69 // This is only called for interface methods. If the resolved_method 70 // comes from java/lang/Object, it can be the subject of a virtual call, so 71 // we should pick the vtable index from the resolved method. 72 // In that case, the caller must call set_virtual instead of set_interface. 73 assert(resolved_method->method_holder()->is_interface(), ""); 74 assert(itable_index == resolved_method()->itable_index(), ""); 75 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); 76 } 77 78 void CallInfo::set_virtual(KlassHandle resolved_klass, 79 KlassHandle selected_klass, 80 const methodHandle& resolved_method, 81 const methodHandle& selected_method, 82 int vtable_index, TRAPS) { 83 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); 84 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); 85 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); 86 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); 87 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); 88 } 89 90 void CallInfo::set_handle(const methodHandle& resolved_method, 91 Handle resolved_appendix, 92 Handle resolved_method_type, TRAPS) { 93 set_handle(SystemDictionary::MethodHandle_klass(), resolved_method, resolved_appendix, resolved_method_type, CHECK); 94 } 95 96 void CallInfo::set_handle(KlassHandle resolved_klass, 97 const methodHandle& resolved_method, 98 Handle resolved_appendix, 99 Handle resolved_method_type, TRAPS) { 100 if (resolved_method.is_null()) { 101 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); 102 } 103 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || 104 resolved_method->is_compiled_lambda_form(), 105 "linkMethod must return one of these"); 106 int vtable_index = Method::nonvirtual_vtable_index; 107 assert(!resolved_method->has_vtable_index(), ""); 108 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); 109 _resolved_appendix = resolved_appendix; 110 _resolved_method_type = resolved_method_type; 111 } 112 113 void CallInfo::set_common(KlassHandle resolved_klass, 114 KlassHandle selected_klass, 115 const methodHandle& resolved_method, 116 const methodHandle& selected_method, 117 CallKind kind, 118 int index, 119 TRAPS) { 120 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); 121 _resolved_klass = resolved_klass; 122 _selected_klass = selected_klass; 123 _resolved_method = resolved_method; 124 _selected_method = selected_method; 125 _call_kind = kind; 126 _call_index = index; 127 _resolved_appendix = Handle(); 128 DEBUG_ONLY(verify()); // verify before making side effects 129 130 CompilationPolicy::compile_if_required(selected_method, THREAD); 131 } 132 133 // utility query for unreflecting a method 134 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { 135 Klass* resolved_method_holder = resolved_method->method_holder(); 136 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st 137 resolved_klass = resolved_method_holder; 138 } 139 _resolved_klass = resolved_klass; 140 _selected_klass = resolved_klass; 141 _resolved_method = resolved_method; 142 _selected_method = resolved_method; 143 // classify: 144 CallKind kind = CallInfo::unknown_kind; 145 int index = resolved_method->vtable_index(); 146 if (resolved_method->can_be_statically_bound()) { 147 kind = CallInfo::direct_call; 148 } else if (!resolved_method_holder->is_interface()) { 149 // Could be an Object method inherited into an interface, but still a vtable call. 150 kind = CallInfo::vtable_call; 151 } else if (!resolved_klass->is_interface()) { 152 // A default or miranda method. Compute the vtable index. 153 ResourceMark rm; 154 klassVtable* vt = resolved_klass->vtable(); 155 index = LinkResolver::vtable_index_of_interface_method(resolved_klass, 156 resolved_method); 157 assert(index >= 0 , "we should have valid vtable index at this point"); 158 159 kind = CallInfo::vtable_call; 160 } else if (resolved_method->has_vtable_index()) { 161 // Can occur if an interface redeclares a method of Object. 162 163 #ifdef ASSERT 164 // Ensure that this is really the case. 165 KlassHandle object_klass = SystemDictionary::Object_klass(); 166 Method * object_resolved_method = object_klass()->vtable()->method_at(index); 167 assert(object_resolved_method->name() == resolved_method->name(), 168 "Object and interface method names should match at vtable index %d, %s != %s", 169 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string()); 170 assert(object_resolved_method->signature() == resolved_method->signature(), 171 "Object and interface method signatures should match at vtable index %d, %s != %s", 172 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string()); 173 #endif // ASSERT 174 175 kind = CallInfo::vtable_call; 176 } else { 177 // A regular interface call. 178 kind = CallInfo::itable_call; 179 index = resolved_method->itable_index(); 180 } 181 assert(index == Method::nonvirtual_vtable_index || index >= 0, "bad index %d", index); 182 _call_kind = kind; 183 _call_index = index; 184 _resolved_appendix = Handle(); 185 DEBUG_ONLY(verify()); 186 } 187 188 #ifdef ASSERT 189 void CallInfo::verify() { 190 switch (call_kind()) { // the meaning and allowed value of index depends on kind 191 case CallInfo::direct_call: 192 if (_call_index == Method::nonvirtual_vtable_index) break; 193 // else fall through to check vtable index: 194 case CallInfo::vtable_call: 195 assert(resolved_klass()->verify_vtable_index(_call_index), ""); 196 break; 197 case CallInfo::itable_call: 198 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); 199 break; 200 case CallInfo::unknown_kind: 201 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); 202 break; 203 default: 204 fatal("Unexpected call kind %d", call_kind()); 205 } 206 } 207 #endif //ASSERT 208 209 #ifndef PRODUCT 210 void CallInfo::print() { 211 ResourceMark rm; 212 const char* kindstr = "unknown"; 213 switch (_call_kind) { 214 case direct_call: kindstr = "direct"; break; 215 case vtable_call: kindstr = "vtable"; break; 216 case itable_call: kindstr = "itable"; break; 217 } 218 tty->print_cr("Call %s@%d %s", kindstr, _call_index, 219 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); 220 } 221 #endif 222 223 //------------------------------------------------------------------------------------------------------------------------ 224 // Implementation of LinkInfo 225 226 LinkInfo::LinkInfo(const constantPoolHandle& pool, int index, TRAPS) { 227 // resolve klass 228 Klass* result = pool->klass_ref_at(index, CHECK); 229 _resolved_klass = KlassHandle(THREAD, result); 230 231 // Get name, signature, and static klass 232 _name = pool->name_ref_at(index); 233 _signature = pool->signature_ref_at(index); 234 _tag = pool->tag_ref_at(index); 235 _current_klass = KlassHandle(THREAD, pool->pool_holder()); 236 237 // Coming from the constant pool always checks access 238 _check_access = true; 239 } 240 241 char* LinkInfo::method_string() const { 242 return Method::name_and_sig_as_C_string(_resolved_klass(), _name, _signature); 243 } 244 245 #ifndef PRODUCT 246 void LinkInfo::print() { 247 ResourceMark rm; 248 tty->print_cr("Link resolved_klass=%s name=%s signature=%s current_klass=%s check_access=%s", 249 _resolved_klass->name()->as_C_string(), 250 _name->as_C_string(), 251 _signature->as_C_string(), 252 _current_klass.is_null() ? "(none)" : _current_klass->name()->as_C_string(), 253 _check_access ? "true" : "false"); 254 } 255 #endif // PRODUCT 256 //------------------------------------------------------------------------------------------------------------------------ 257 // Klass resolution 258 259 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { 260 Reflection::VerifyClassAccessResults vca_result = 261 Reflection::verify_class_access(ref_klass(), sel_klass(), true); 262 if (vca_result != Reflection::ACCESS_OK) { 263 ResourceMark rm(THREAD); 264 char* msg = Reflection::verify_class_access_msg(ref_klass(), sel_klass(), vca_result); 265 if (msg == NULL) { 266 Exceptions::fthrow( 267 THREAD_AND_LOCATION, 268 vmSymbols::java_lang_IllegalAccessError(), 269 "failed to access class %s from class %s", 270 sel_klass->external_name(), 271 ref_klass->external_name()); 272 } else { 273 // Use module specific message returned by verify_class_access_msg(). 274 Exceptions::fthrow( 275 THREAD_AND_LOCATION, 276 vmSymbols::java_lang_IllegalAccessError(), 277 "%s", msg); 278 } 279 } 280 } 281 282 //------------------------------------------------------------------------------------------------------------------------ 283 // Method resolution 284 // 285 // According to JVM spec. $5.4.3c & $5.4.3d 286 287 // Look up method in klasses, including static methods 288 // Then look up local default methods 289 methodHandle LinkResolver::lookup_method_in_klasses(const LinkInfo& link_info, 290 bool checkpolymorphism, 291 bool in_imethod_resolve, TRAPS) { 292 KlassHandle klass = link_info.resolved_klass(); 293 Symbol* name = link_info.name(); 294 Symbol* signature = link_info.signature(); 295 296 // Ignore overpasses so statics can be found during resolution 297 Method* result = klass->uncached_lookup_method(name, signature, Klass::skip_overpass); 298 299 if (klass->is_array_klass()) { 300 // Only consider klass and super klass for arrays 301 return methodHandle(THREAD, result); 302 } 303 304 InstanceKlass* ik = InstanceKlass::cast(klass()); 305 306 // JDK 8, JVMS 5.4.3.4: Interface method resolution should 307 // ignore static and non-public methods of java.lang.Object, 308 // like clone, finalize, registerNatives. 309 if (in_imethod_resolve && 310 result != NULL && 311 ik->is_interface() && 312 (result->is_static() || !result->is_public()) && 313 result->method_holder() == SystemDictionary::Object_klass()) { 314 result = NULL; 315 } 316 317 // Before considering default methods, check for an overpass in the 318 // current class if a method has not been found. 319 if (result == NULL) { 320 result = ik->find_method(name, signature); 321 } 322 323 if (result == NULL) { 324 Array<Method*>* default_methods = ik->default_methods(); 325 if (default_methods != NULL) { 326 result = InstanceKlass::find_method(default_methods, name, signature); 327 } 328 } 329 330 if (checkpolymorphism && result != NULL) { 331 vmIntrinsics::ID iid = result->intrinsic_id(); 332 if (MethodHandles::is_signature_polymorphic(iid)) { 333 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. 334 return NULL; 335 } 336 } 337 return methodHandle(THREAD, result); 338 } 339 340 // returns first instance method 341 // Looks up method in classes, then looks up local default methods 342 methodHandle LinkResolver::lookup_instance_method_in_klasses(KlassHandle klass, 343 Symbol* name, 344 Symbol* signature, TRAPS) { 345 Method* result = klass->uncached_lookup_method(name, signature, Klass::find_overpass); 346 347 while (result != NULL && result->is_static() && result->method_holder()->super() != NULL) { 348 Klass* super_klass = result->method_holder()->super(); 349 result = super_klass->uncached_lookup_method(name, signature, Klass::find_overpass); 350 } 351 352 if (klass->is_array_klass()) { 353 // Only consider klass and super klass for arrays 354 return methodHandle(THREAD, result); 355 } 356 357 if (result == NULL) { 358 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); 359 if (default_methods != NULL) { 360 result = InstanceKlass::find_method(default_methods, name, signature); 361 assert(result == NULL || !result->is_static(), "static defaults not allowed"); 362 } 363 } 364 return methodHandle(THREAD, result); 365 } 366 367 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, 368 const methodHandle& resolved_method) { 369 370 int vtable_index = Method::invalid_vtable_index; 371 Symbol* name = resolved_method->name(); 372 Symbol* signature = resolved_method->signature(); 373 InstanceKlass* ik = InstanceKlass::cast(klass()); 374 375 // First check in default method array 376 if (!resolved_method->is_abstract() && ik->default_methods() != NULL) { 377 int index = InstanceKlass::find_method_index(ik->default_methods(), 378 name, signature, Klass::find_overpass, 379 Klass::find_static, Klass::find_private); 380 if (index >= 0 ) { 381 vtable_index = ik->default_vtable_indices()->at(index); 382 } 383 } 384 if (vtable_index == Method::invalid_vtable_index) { 385 // get vtable_index for miranda methods 386 ResourceMark rm; 387 klassVtable *vt = ik->vtable(); 388 vtable_index = vt->index_of_miranda(name, signature); 389 } 390 return vtable_index; 391 } 392 393 methodHandle LinkResolver::lookup_method_in_interfaces(const LinkInfo& cp_info, TRAPS) { 394 InstanceKlass *ik = InstanceKlass::cast(cp_info.resolved_klass()()); 395 396 // Specify 'true' in order to skip default methods when searching the 397 // interfaces. Function lookup_method_in_klasses() already looked for 398 // the method in the default methods table. 399 return methodHandle(THREAD, 400 ik->lookup_method_in_all_interfaces(cp_info.name(), cp_info.signature(), 401 Klass::skip_defaults)); 402 } 403 404 methodHandle LinkResolver::lookup_polymorphic_method( 405 const LinkInfo& link_info, 406 Handle *appendix_result_or_null, 407 Handle *method_type_result, 408 TRAPS) { 409 KlassHandle klass = link_info.resolved_klass(); 410 Symbol* name = link_info.name(); 411 Symbol* full_signature = link_info.signature(); 412 413 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); 414 if (TraceMethodHandles) { 415 ResourceMark rm(THREAD); 416 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", 417 vmIntrinsics::name_at(iid), klass->external_name(), 418 name->as_C_string(), full_signature->as_C_string()); 419 } 420 if ((klass() == SystemDictionary::MethodHandle_klass() || 421 klass() == SystemDictionary::VarHandle_klass()) && 422 iid != vmIntrinsics::_none) { 423 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { 424 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. 425 // Do not erase last argument type (MemberName) if it is a static linkTo method. 426 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); 427 TempNewSymbol basic_signature = 428 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK_NULL); 429 if (TraceMethodHandles) { 430 ResourceMark rm(THREAD); 431 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", 432 name->as_C_string(), 433 full_signature->as_C_string(), 434 basic_signature->as_C_string()); 435 } 436 methodHandle result = SystemDictionary::find_method_handle_intrinsic(iid, 437 basic_signature, 438 CHECK_NULL); 439 if (result.not_null()) { 440 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); 441 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); 442 assert(basic_signature == result->signature(), "predict the result signature"); 443 if (TraceMethodHandles) { 444 ttyLocker ttyl; 445 tty->print("lookup_polymorphic_method => intrinsic "); 446 result->print_on(tty); 447 } 448 } 449 return result; 450 } else if (iid == vmIntrinsics::_invokeGeneric 451 && THREAD->can_call_java() 452 && appendix_result_or_null != NULL) { 453 // This is a method with type-checking semantics. 454 // We will ask Java code to spin an adapter method for it. 455 if (!MethodHandles::enabled()) { 456 // Make sure the Java part of the runtime has been booted up. 457 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); 458 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { 459 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), 460 Handle(), 461 Handle(), 462 true, 463 CHECK_NULL); 464 } 465 } 466 467 Handle appendix; 468 Handle method_type; 469 methodHandle result = SystemDictionary::find_method_handle_invoker( 470 klass, 471 name, 472 full_signature, 473 link_info.current_klass(), 474 &appendix, 475 &method_type, 476 CHECK_NULL); 477 if (TraceMethodHandles) { 478 ttyLocker ttyl; 479 tty->print("lookup_polymorphic_method => (via Java) "); 480 result->print_on(tty); 481 tty->print(" lookup_polymorphic_method => appendix = "); 482 if (appendix.is_null()) tty->print_cr("(none)"); 483 else appendix->print_on(tty); 484 } 485 if (result.not_null()) { 486 #ifdef ASSERT 487 ResourceMark rm(THREAD); 488 489 TempNewSymbol basic_signature = 490 MethodHandles::lookup_basic_type_signature(full_signature, CHECK_NULL); 491 int actual_size_of_params = result->size_of_parameters(); 492 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); 493 // +1 for MethodHandle.this, +1 for trailing MethodType 494 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; 495 if (appendix.not_null()) expected_size_of_params += 1; 496 if (actual_size_of_params != expected_size_of_params) { 497 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); 498 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); 499 result->print(); 500 } 501 assert(actual_size_of_params == expected_size_of_params, 502 "%d != %d", actual_size_of_params, expected_size_of_params); 503 #endif //ASSERT 504 505 assert(appendix_result_or_null != NULL, ""); 506 (*appendix_result_or_null) = appendix; 507 (*method_type_result) = method_type; 508 } 509 return result; 510 } 511 } 512 return NULL; 513 } 514 515 void LinkResolver::check_method_accessability(KlassHandle ref_klass, 516 KlassHandle resolved_klass, 517 KlassHandle sel_klass, 518 const methodHandle& sel_method, 519 TRAPS) { 520 521 AccessFlags flags = sel_method->access_flags(); 522 523 // Special case: arrays always override "clone". JVMS 2.15. 524 // If the resolved klass is an array class, and the declaring class 525 // is java.lang.Object and the method is "clone", set the flags 526 // to public. 527 // 528 // We'll check for the method name first, as that's most likely 529 // to be false (so we'll short-circuit out of these tests). 530 if (sel_method->name() == vmSymbols::clone_name() && 531 sel_klass() == SystemDictionary::Object_klass() && 532 resolved_klass->is_array_klass()) { 533 // We need to change "protected" to "public". 534 assert(flags.is_protected(), "clone not protected?"); 535 jint new_flags = flags.as_int(); 536 new_flags = new_flags & (~JVM_ACC_PROTECTED); 537 new_flags = new_flags | JVM_ACC_PUBLIC; 538 flags.set_flags(new_flags); 539 } 540 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); 541 542 if (!Reflection::verify_field_access(ref_klass(), 543 resolved_klass(), 544 sel_klass(), 545 flags, 546 true)) { 547 ResourceMark rm(THREAD); 548 Exceptions::fthrow( 549 THREAD_AND_LOCATION, 550 vmSymbols::java_lang_IllegalAccessError(), 551 "tried to access method %s.%s%s from class %s", 552 sel_klass->external_name(), 553 sel_method->name()->as_C_string(), 554 sel_method->signature()->as_C_string(), 555 ref_klass->external_name() 556 ); 557 return; 558 } 559 } 560 561 methodHandle LinkResolver::resolve_method_statically(Bytecodes::Code code, 562 const constantPoolHandle& pool, int index, TRAPS) { 563 // This method is used only 564 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), 565 // and 566 // (2) in Bytecode_invoke::static_target 567 // It appears to fail when applied to an invokeinterface call site. 568 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. 569 // resolve klass 570 KlassHandle resolved_klass; 571 if (code == Bytecodes::_invokedynamic) { 572 resolved_klass = SystemDictionary::MethodHandle_klass(); 573 Symbol* method_name = vmSymbols::invoke_name(); 574 Symbol* method_signature = pool->signature_ref_at(index); 575 KlassHandle current_klass(THREAD, pool->pool_holder()); 576 LinkInfo link_info(resolved_klass, method_name, method_signature, current_klass); 577 return resolve_method(link_info, code, THREAD); 578 } 579 580 LinkInfo link_info(pool, index, CHECK_NULL); 581 resolved_klass = link_info.resolved_klass(); 582 583 if (pool->has_preresolution() 584 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && 585 MethodHandles::is_signature_polymorphic_name(resolved_klass(), link_info.name()))) { 586 Method* result = ConstantPool::method_at_if_loaded(pool, index); 587 if (result != NULL) { 588 return methodHandle(THREAD, result); 589 } 590 } 591 592 if (code == Bytecodes::_invokeinterface) { 593 return resolve_interface_method(link_info, code, THREAD); 594 } else if (code == Bytecodes::_invokevirtual) { 595 return resolve_method(link_info, code, THREAD); 596 } else if (!resolved_klass->is_interface()) { 597 return resolve_method(link_info, code, THREAD); 598 } else { 599 return resolve_interface_method(link_info, code, THREAD); 600 } 601 } 602 603 // Check and print a loader constraint violation message for method or interface method 604 void LinkResolver::check_method_loader_constraints(const LinkInfo& link_info, 605 const methodHandle& resolved_method, 606 const char* method_type, TRAPS) { 607 Handle current_loader(THREAD, link_info.current_klass()->class_loader()); 608 Handle resolved_loader(THREAD, resolved_method->method_holder()->class_loader()); 609 610 ResourceMark rm(THREAD); 611 Symbol* failed_type_symbol = 612 SystemDictionary::check_signature_loaders(link_info.signature(), current_loader, 613 resolved_loader, true, CHECK); 614 if (failed_type_symbol != NULL) { 615 const char* msg = "loader constraint violation: when resolving %s" 616 " \"%s\" the class loader (instance of %s) of the current class, %s," 617 " and the class loader (instance of %s) for the method's defining class, %s, have" 618 " different Class objects for the type %s used in the signature"; 619 char* sig = link_info.method_string(); 620 const char* loader1_name = SystemDictionary::loader_name(current_loader()); 621 char* current = link_info.current_klass()->name()->as_C_string(); 622 const char* loader2_name = SystemDictionary::loader_name(resolved_loader()); 623 char* target = resolved_method->method_holder()->name()->as_C_string(); 624 char* failed_type_name = failed_type_symbol->as_C_string(); 625 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1_name) + 626 strlen(current) + strlen(loader2_name) + strlen(target) + 627 strlen(failed_type_name) + strlen(method_type) + 1; 628 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); 629 jio_snprintf(buf, buflen, msg, method_type, sig, loader1_name, current, loader2_name, 630 target, failed_type_name); 631 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); 632 } 633 } 634 635 void LinkResolver::check_field_loader_constraints(Symbol* field, Symbol* sig, 636 KlassHandle current_klass, 637 KlassHandle sel_klass, TRAPS) { 638 Handle ref_loader(THREAD, current_klass->class_loader()); 639 Handle sel_loader(THREAD, sel_klass->class_loader()); 640 641 ResourceMark rm(THREAD); // needed for check_signature_loaders 642 Symbol* failed_type_symbol = 643 SystemDictionary::check_signature_loaders(sig, 644 ref_loader, sel_loader, 645 false, 646 CHECK); 647 if (failed_type_symbol != NULL) { 648 const char* msg = "loader constraint violation: when resolving field" 649 " \"%s\" the class loader (instance of %s) of the referring class, " 650 "%s, and the class loader (instance of %s) for the field's resolved " 651 "type, %s, have different Class objects for that type"; 652 char* field_name = field->as_C_string(); 653 const char* loader1_name = SystemDictionary::loader_name(ref_loader()); 654 char* sel = sel_klass->name()->as_C_string(); 655 const char* loader2_name = SystemDictionary::loader_name(sel_loader()); 656 char* failed_type_name = failed_type_symbol->as_C_string(); 657 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1_name) + 658 strlen(sel) + strlen(loader2_name) + strlen(failed_type_name) + 1; 659 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); 660 jio_snprintf(buf, buflen, msg, field_name, loader1_name, sel, loader2_name, 661 failed_type_name); 662 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); 663 } 664 } 665 666 methodHandle LinkResolver::resolve_method(const LinkInfo& link_info, 667 Bytecodes::Code code, TRAPS) { 668 669 Handle nested_exception; 670 KlassHandle resolved_klass = link_info.resolved_klass(); 671 672 // 1. For invokevirtual, cannot call an interface method 673 if (code == Bytecodes::_invokevirtual && resolved_klass->is_interface()) { 674 ResourceMark rm(THREAD); 675 char buf[200]; 676 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", 677 resolved_klass()->external_name()); 678 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 679 } 680 681 // 2. check constant pool tag for called method - must be JVM_CONSTANT_Methodref 682 if (!link_info.tag().is_invalid() && !link_info.tag().is_method()) { 683 ResourceMark rm(THREAD); 684 char buf[200]; 685 jio_snprintf(buf, sizeof(buf), "Method %s must be Methodref constant", link_info.method_string()); 686 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 687 } 688 689 690 // 3. lookup method in resolved klass and its super klasses 691 methodHandle resolved_method = lookup_method_in_klasses(link_info, true, false, CHECK_NULL); 692 693 // 4. lookup method in all the interfaces implemented by the resolved klass 694 if (resolved_method.is_null() && !resolved_klass->is_array_klass()) { // not found in the class hierarchy 695 resolved_method = lookup_method_in_interfaces(link_info, CHECK_NULL); 696 697 if (resolved_method.is_null()) { 698 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc 699 resolved_method = lookup_polymorphic_method(link_info, (Handle*)NULL, (Handle*)NULL, THREAD); 700 if (HAS_PENDING_EXCEPTION) { 701 nested_exception = Handle(THREAD, PENDING_EXCEPTION); 702 CLEAR_PENDING_EXCEPTION; 703 } 704 } 705 } 706 707 // 5. method lookup failed 708 if (resolved_method.is_null()) { 709 ResourceMark rm(THREAD); 710 THROW_MSG_CAUSE_(vmSymbols::java_lang_NoSuchMethodError(), 711 Method::name_and_sig_as_C_string(resolved_klass(), 712 link_info.name(), 713 link_info.signature()), 714 nested_exception, NULL); 715 } 716 717 // 6. access checks, access checking may be turned off when calling from within the VM. 718 KlassHandle current_klass = link_info.current_klass(); 719 if (link_info.check_access()) { 720 assert(current_klass.not_null() , "current_klass should not be null"); 721 722 // check if method can be accessed by the referring class 723 check_method_accessability(current_klass, 724 resolved_klass, 725 KlassHandle(THREAD, resolved_method->method_holder()), 726 resolved_method, 727 CHECK_NULL); 728 729 // check loader constraints 730 check_method_loader_constraints(link_info, resolved_method, "method", CHECK_NULL); 731 } 732 733 return resolved_method; 734 } 735 736 static void trace_method_resolution(const char* prefix, 737 KlassHandle klass, 738 KlassHandle resolved_klass, 739 const methodHandle& method, 740 bool logitables, 741 int index = -1) { 742 #ifndef PRODUCT 743 ResourceMark rm; 744 outputStream* st; 745 if (logitables) { 746 st = Log(itables)::trace_stream(); 747 } else { 748 st = Log(vtables)::trace_stream(); 749 } 750 st->print("%s%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", 751 prefix, 752 (klass.is_null() ? "<NULL>" : klass->internal_name()), 753 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), 754 Method::name_and_sig_as_C_string(resolved_klass(), 755 method->name(), 756 method->signature()), 757 method->method_holder()->internal_name()); 758 method->print_linkage_flags(st); 759 if (index != -1) { 760 st->print("vtable_index:%d", index); 761 } 762 st->cr(); 763 #endif // PRODUCT 764 } 765 766 // Do linktime resolution of a method in the interface within the context of the specied bytecode. 767 methodHandle LinkResolver::resolve_interface_method(const LinkInfo& link_info, Bytecodes::Code code, TRAPS) { 768 769 KlassHandle resolved_klass = link_info.resolved_klass(); 770 771 // check if klass is interface 772 if (!resolved_klass->is_interface()) { 773 ResourceMark rm(THREAD); 774 char buf[200]; 775 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); 776 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 777 } 778 779 // check constant pool tag for called method - must be JVM_CONSTANT_InterfaceMethodref 780 if (!link_info.tag().is_invalid() && !link_info.tag().is_interface_method()) { 781 ResourceMark rm(THREAD); 782 char buf[200]; 783 jio_snprintf(buf, sizeof(buf), "Method %s must be InterfaceMethodref constant", link_info.method_string()); 784 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 785 } 786 787 // lookup method in this interface or its super, java.lang.Object 788 // JDK8: also look for static methods 789 methodHandle resolved_method = lookup_method_in_klasses(link_info, false, true, CHECK_NULL); 790 791 if (resolved_method.is_null() && !resolved_klass->is_array_klass()) { 792 // lookup method in all the super-interfaces 793 resolved_method = lookup_method_in_interfaces(link_info, CHECK_NULL); 794 } 795 796 if (resolved_method.is_null()) { 797 // no method found 798 ResourceMark rm(THREAD); 799 THROW_MSG_NULL(vmSymbols::java_lang_NoSuchMethodError(), 800 Method::name_and_sig_as_C_string(resolved_klass(), 801 link_info.name(), 802 link_info.signature())); 803 } 804 805 if (link_info.check_access()) { 806 // JDK8 adds non-public interface methods, and accessability check requirement 807 KlassHandle current_klass = link_info.current_klass(); 808 809 assert(current_klass.not_null() , "current_klass should not be null"); 810 811 // check if method can be accessed by the referring class 812 check_method_accessability(current_klass, 813 resolved_klass, 814 KlassHandle(THREAD, resolved_method->method_holder()), 815 resolved_method, 816 CHECK_NULL); 817 818 check_method_loader_constraints(link_info, resolved_method, "interface method", CHECK_NULL); 819 } 820 821 if (code != Bytecodes::_invokestatic && resolved_method->is_static()) { 822 ResourceMark rm(THREAD); 823 char buf[200]; 824 jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s", 825 Method::name_and_sig_as_C_string(resolved_klass(), 826 resolved_method->name(), resolved_method->signature())); 827 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 828 } 829 830 if (code == Bytecodes::_invokeinterface && resolved_method->is_private()) { 831 ResourceMark rm(THREAD); 832 char buf[200]; 833 834 KlassHandle current_klass = link_info.current_klass(); 835 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s, caller-class:%s", 836 Method::name_and_sig_as_C_string(resolved_klass(), 837 resolved_method->name(), 838 resolved_method->signature()), 839 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); 840 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 841 } 842 843 if (log_develop_is_enabled(Trace, itables)) { 844 trace_method_resolution("invokeinterface resolved method: caller-class", 845 link_info.current_klass(), resolved_klass, 846 resolved_method, true); 847 } 848 849 return resolved_method; 850 } 851 852 //------------------------------------------------------------------------------------------------------------------------ 853 // Field resolution 854 855 void LinkResolver::check_field_accessability(KlassHandle ref_klass, 856 KlassHandle resolved_klass, 857 KlassHandle sel_klass, 858 const fieldDescriptor& fd, 859 TRAPS) { 860 if (!Reflection::verify_field_access(ref_klass(), 861 resolved_klass(), 862 sel_klass(), 863 fd.access_flags(), 864 true)) { 865 ResourceMark rm(THREAD); 866 Exceptions::fthrow( 867 THREAD_AND_LOCATION, 868 vmSymbols::java_lang_IllegalAccessError(), 869 "tried to access field %s.%s from class %s", 870 sel_klass->external_name(), 871 fd.name()->as_C_string(), 872 ref_klass->external_name() 873 ); 874 return; 875 } 876 } 877 878 void LinkResolver::resolve_field_access(fieldDescriptor& fd, const constantPoolHandle& pool, int index, Bytecodes::Code byte, TRAPS) { 879 LinkInfo link_info(pool, index, CHECK); 880 resolve_field(fd, link_info, byte, true, CHECK); 881 } 882 883 void LinkResolver::resolve_field(fieldDescriptor& fd, 884 const LinkInfo& link_info, 885 Bytecodes::Code byte, bool initialize_class, 886 TRAPS) { 887 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || 888 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || 889 byte == Bytecodes::_nofast_getfield || byte == Bytecodes::_nofast_putfield || 890 (byte == Bytecodes::_nop && !link_info.check_access()), "bad field access bytecode"); 891 892 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); 893 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic || byte == Bytecodes::_nofast_putfield); 894 // Check if there's a resolved klass containing the field 895 KlassHandle resolved_klass = link_info.resolved_klass(); 896 Symbol* field = link_info.name(); 897 Symbol* sig = link_info.signature(); 898 899 if (resolved_klass.is_null()) { 900 ResourceMark rm(THREAD); 901 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); 902 } 903 904 // Resolve instance field 905 KlassHandle sel_klass(THREAD, resolved_klass->find_field(field, sig, &fd)); 906 // check if field exists; i.e., if a klass containing the field def has been selected 907 if (sel_klass.is_null()) { 908 ResourceMark rm(THREAD); 909 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); 910 } 911 912 if (!link_info.check_access()) 913 // Access checking may be turned off when calling from within the VM. 914 return; 915 916 // check access 917 KlassHandle current_klass = link_info.current_klass(); 918 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); 919 920 // check for errors 921 if (is_static != fd.is_static()) { 922 ResourceMark rm(THREAD); 923 char msg[200]; 924 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); 925 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); 926 } 927 928 // Final fields can only be accessed from its own class. 929 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { 930 THROW(vmSymbols::java_lang_IllegalAccessError()); 931 } 932 933 // initialize resolved_klass if necessary 934 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) 935 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) 936 // 937 // note 2: we don't want to force initialization if we are just checking 938 // if the field access is legal; e.g., during compilation 939 if (is_static && initialize_class) { 940 sel_klass->initialize(CHECK); 941 } 942 943 if (sel_klass() != current_klass()) { 944 check_field_loader_constraints(field, sig, current_klass, sel_klass, CHECK); 945 } 946 947 // return information. note that the klass is set to the actual klass containing the 948 // field, otherwise access of static fields in superclasses will not work. 949 } 950 951 952 //------------------------------------------------------------------------------------------------------------------------ 953 // Invoke resolution 954 // 955 // Naming conventions: 956 // 957 // resolved_method the specified method (i.e., static receiver specified via constant pool index) 958 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) 959 // resolved_klass the specified klass (i.e., specified via constant pool index) 960 // recv_klass the receiver klass 961 962 963 void LinkResolver::resolve_static_call(CallInfo& result, 964 const LinkInfo& link_info, 965 bool initialize_class, TRAPS) { 966 methodHandle resolved_method = linktime_resolve_static_method(link_info, CHECK); 967 968 // The resolved class can change as a result of this resolution. 969 KlassHandle resolved_klass(THREAD, resolved_method->method_holder()); 970 971 // Initialize klass (this should only happen if everything is ok) 972 if (initialize_class && resolved_klass->should_be_initialized()) { 973 resolved_klass->initialize(CHECK); 974 // Use updated LinkInfo to reresolve with resolved method holder 975 LinkInfo new_info(resolved_klass, link_info.name(), link_info.signature(), 976 link_info.current_klass(), 977 link_info.check_access() ? LinkInfo::needs_access_check : LinkInfo::skip_access_check); 978 resolved_method = linktime_resolve_static_method(new_info, CHECK); 979 } 980 981 // setup result 982 result.set_static(resolved_klass, resolved_method, CHECK); 983 } 984 985 // throws linktime exceptions 986 methodHandle LinkResolver::linktime_resolve_static_method(const LinkInfo& link_info, TRAPS) { 987 988 KlassHandle resolved_klass = link_info.resolved_klass(); 989 methodHandle resolved_method; 990 if (!resolved_klass->is_interface()) { 991 resolved_method = resolve_method(link_info, Bytecodes::_invokestatic, CHECK_NULL); 992 } else { 993 resolved_method = resolve_interface_method(link_info, Bytecodes::_invokestatic, CHECK_NULL); 994 } 995 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); 996 997 // check if static 998 if (!resolved_method->is_static()) { 999 ResourceMark rm(THREAD); 1000 char buf[200]; 1001 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), 1002 resolved_method->name(), 1003 resolved_method->signature())); 1004 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1005 } 1006 return resolved_method; 1007 } 1008 1009 1010 void LinkResolver::resolve_special_call(CallInfo& result, 1011 const LinkInfo& link_info, 1012 TRAPS) { 1013 methodHandle resolved_method = linktime_resolve_special_method(link_info, CHECK); 1014 runtime_resolve_special_method(result, resolved_method, 1015 link_info.resolved_klass(), 1016 link_info.current_klass(), 1017 link_info.check_access(), CHECK); 1018 } 1019 1020 // throws linktime exceptions 1021 methodHandle LinkResolver::linktime_resolve_special_method(const LinkInfo& link_info, 1022 TRAPS) { 1023 1024 // Invokespecial is called for multiple special reasons: 1025 // <init> 1026 // local private method invocation, for classes and interfaces 1027 // superclass.method, which can also resolve to a default method 1028 // and the selected method is recalculated relative to the direct superclass 1029 // superinterface.method, which explicitly does not check shadowing 1030 KlassHandle resolved_klass = link_info.resolved_klass(); 1031 methodHandle resolved_method; 1032 1033 if (!resolved_klass->is_interface()) { 1034 resolved_method = resolve_method(link_info, Bytecodes::_invokespecial, CHECK_NULL); 1035 } else { 1036 resolved_method = resolve_interface_method(link_info, Bytecodes::_invokespecial, CHECK_NULL); 1037 } 1038 1039 // check if method name is <init>, that it is found in same klass as static type 1040 if (resolved_method->name() == vmSymbols::object_initializer_name() && 1041 resolved_method->method_holder() != resolved_klass()) { 1042 ResourceMark rm(THREAD); 1043 Exceptions::fthrow( 1044 THREAD_AND_LOCATION, 1045 vmSymbols::java_lang_NoSuchMethodError(), 1046 "%s: method %s%s not found", 1047 resolved_klass->external_name(), 1048 resolved_method->name()->as_C_string(), 1049 resolved_method->signature()->as_C_string() 1050 ); 1051 return NULL; 1052 } 1053 1054 // check if invokespecial's interface method reference is in an indirect superinterface 1055 KlassHandle current_klass = link_info.current_klass(); 1056 if (!current_klass.is_null() && resolved_klass->is_interface()) { 1057 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? 1058 current_klass() : 1059 InstanceKlass::cast(current_klass())->host_klass(); 1060 // Disable verification for the dynamically-generated reflection bytecodes. 1061 bool is_reflect = klass_to_check->is_subclass_of( 1062 SystemDictionary::reflect_MagicAccessorImpl_klass()); 1063 1064 if (!is_reflect && 1065 !InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { 1066 ResourceMark rm(THREAD); 1067 char buf[200]; 1068 jio_snprintf(buf, sizeof(buf), 1069 "Interface method reference: %s, is in an indirect superinterface of %s", 1070 Method::name_and_sig_as_C_string(resolved_klass(), 1071 resolved_method->name(), 1072 resolved_method->signature()), 1073 current_klass->external_name()); 1074 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1075 } 1076 } 1077 1078 // check if not static 1079 if (resolved_method->is_static()) { 1080 ResourceMark rm(THREAD); 1081 char buf[200]; 1082 jio_snprintf(buf, sizeof(buf), 1083 "Expecting non-static method %s", 1084 Method::name_and_sig_as_C_string(resolved_klass(), 1085 resolved_method->name(), 1086 resolved_method->signature())); 1087 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1088 } 1089 1090 if (log_develop_is_enabled(Trace, itables)) { 1091 trace_method_resolution("invokespecial resolved method: caller-class:", 1092 current_klass, resolved_klass, resolved_method, true); 1093 } 1094 1095 return resolved_method; 1096 } 1097 1098 // throws runtime exceptions 1099 void LinkResolver::runtime_resolve_special_method(CallInfo& result, 1100 const methodHandle& resolved_method, 1101 KlassHandle resolved_klass, 1102 KlassHandle current_klass, 1103 bool check_access, TRAPS) { 1104 1105 // resolved method is selected method unless we have an old-style lookup 1106 // for a superclass method 1107 // Invokespecial for a superinterface, resolved method is selected method, 1108 // no checks for shadowing 1109 methodHandle sel_method(THREAD, resolved_method()); 1110 1111 // check if this is an old-style super call and do a new lookup if so 1112 { KlassHandle method_klass = KlassHandle(THREAD, 1113 resolved_method->method_holder()); 1114 1115 if (check_access && 1116 // a) check if ACC_SUPER flag is set for the current class 1117 (current_klass->is_super() || !AllowNonVirtualCalls) && 1118 // b) check if the class of the resolved_klass is a superclass 1119 // (not supertype in order to exclude interface classes) of the current class. 1120 // This check is not performed for super.invoke for interface methods 1121 // in super interfaces. 1122 current_klass->is_subclass_of(resolved_klass()) && 1123 current_klass() != resolved_klass() && 1124 // c) check if the method is not <init> 1125 resolved_method->name() != vmSymbols::object_initializer_name()) { 1126 // Lookup super method 1127 KlassHandle super_klass(THREAD, current_klass->super()); 1128 sel_method = lookup_instance_method_in_klasses(super_klass, 1129 resolved_method->name(), 1130 resolved_method->signature(), CHECK); 1131 // check if found 1132 if (sel_method.is_null()) { 1133 ResourceMark rm(THREAD); 1134 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), 1135 Method::name_and_sig_as_C_string(resolved_klass(), 1136 resolved_method->name(), 1137 resolved_method->signature())); 1138 } 1139 } 1140 } 1141 1142 // check if not static 1143 if (sel_method->is_static()) { 1144 ResourceMark rm(THREAD); 1145 char buf[200]; 1146 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), 1147 resolved_method->name(), 1148 resolved_method->signature())); 1149 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1150 } 1151 1152 // check if abstract 1153 if (sel_method->is_abstract()) { 1154 ResourceMark rm(THREAD); 1155 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), 1156 Method::name_and_sig_as_C_string(resolved_klass(), 1157 sel_method->name(), 1158 sel_method->signature())); 1159 } 1160 1161 if (log_develop_is_enabled(Trace, itables)) { 1162 trace_method_resolution("invokespecial selected method: resolved-class:", 1163 resolved_klass, resolved_klass, sel_method, true); 1164 } 1165 1166 // setup result 1167 result.set_static(resolved_klass, sel_method, CHECK); 1168 } 1169 1170 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, 1171 const LinkInfo& link_info, 1172 bool check_null_and_abstract, TRAPS) { 1173 methodHandle resolved_method = linktime_resolve_virtual_method(link_info, CHECK); 1174 runtime_resolve_virtual_method(result, resolved_method, 1175 link_info.resolved_klass(), 1176 recv, receiver_klass, 1177 check_null_and_abstract, CHECK); 1178 } 1179 1180 // throws linktime exceptions 1181 methodHandle LinkResolver::linktime_resolve_virtual_method(const LinkInfo& link_info, 1182 TRAPS) { 1183 // normal method resolution 1184 methodHandle resolved_method = resolve_method(link_info, Bytecodes::_invokevirtual, CHECK_NULL); 1185 1186 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); 1187 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); 1188 1189 // check if private interface method 1190 KlassHandle resolved_klass = link_info.resolved_klass(); 1191 KlassHandle current_klass = link_info.current_klass(); 1192 1193 // This is impossible, if resolve_klass is an interface, we've thrown icce in resolve_method 1194 if (resolved_klass->is_interface() && resolved_method->is_private()) { 1195 ResourceMark rm(THREAD); 1196 char buf[200]; 1197 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", 1198 Method::name_and_sig_as_C_string(resolved_klass(), 1199 resolved_method->name(), 1200 resolved_method->signature()), 1201 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); 1202 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1203 } 1204 1205 // check if not static 1206 if (resolved_method->is_static()) { 1207 ResourceMark rm(THREAD); 1208 char buf[200]; 1209 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), 1210 resolved_method->name(), 1211 resolved_method->signature())); 1212 THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1213 } 1214 1215 if (log_develop_is_enabled(Trace, vtables)) { 1216 trace_method_resolution("invokevirtual resolved method: caller-class:", 1217 current_klass, resolved_klass, resolved_method, false); 1218 } 1219 1220 return resolved_method; 1221 } 1222 1223 // throws runtime exceptions 1224 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, 1225 const methodHandle& resolved_method, 1226 KlassHandle resolved_klass, 1227 Handle recv, 1228 KlassHandle recv_klass, 1229 bool check_null_and_abstract, 1230 TRAPS) { 1231 1232 // setup default return values 1233 int vtable_index = Method::invalid_vtable_index; 1234 methodHandle selected_method; 1235 1236 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); 1237 1238 // runtime method resolution 1239 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists 1240 THROW(vmSymbols::java_lang_NullPointerException()); 1241 } 1242 1243 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s 1244 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since 1245 // a missing receiver might result in a bogus lookup. 1246 assert(resolved_method->method_holder()->is_linked(), "must be linked"); 1247 1248 // do lookup based on receiver klass using the vtable index 1249 if (resolved_method->method_holder()->is_interface()) { // default or miranda method 1250 vtable_index = vtable_index_of_interface_method(resolved_klass, 1251 resolved_method); 1252 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); 1253 1254 selected_method = methodHandle(THREAD, recv_klass->method_at_vtable(vtable_index)); 1255 } else { 1256 // at this point we are sure that resolved_method is virtual and not 1257 // a default or miranda method; therefore, it must have a valid vtable index. 1258 assert(!resolved_method->has_itable_index(), ""); 1259 vtable_index = resolved_method->vtable_index(); 1260 // We could get a negative vtable_index for final methods, 1261 // because as an optimization they are they are never put in the vtable, 1262 // unless they override an existing method. 1263 // If we do get a negative, it means the resolved method is the the selected 1264 // method, and it can never be changed by an override. 1265 if (vtable_index == Method::nonvirtual_vtable_index) { 1266 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); 1267 selected_method = resolved_method; 1268 } else { 1269 selected_method = methodHandle(THREAD, recv_klass->method_at_vtable(vtable_index)); 1270 } 1271 } 1272 1273 // check if method exists 1274 if (selected_method.is_null()) { 1275 ResourceMark rm(THREAD); 1276 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), 1277 Method::name_and_sig_as_C_string(resolved_klass(), 1278 resolved_method->name(), 1279 resolved_method->signature())); 1280 } 1281 1282 // check if abstract 1283 if (check_null_and_abstract && selected_method->is_abstract()) { 1284 ResourceMark rm(THREAD); 1285 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), 1286 Method::name_and_sig_as_C_string(resolved_klass(), 1287 selected_method->name(), 1288 selected_method->signature())); 1289 } 1290 1291 if (log_develop_is_enabled(Trace, vtables)) { 1292 trace_method_resolution("invokevirtual selected method: receiver-class:", 1293 recv_klass, resolved_klass, selected_method, 1294 false, vtable_index); 1295 } 1296 // setup result 1297 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); 1298 } 1299 1300 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, 1301 const LinkInfo& link_info, 1302 bool check_null_and_abstract, TRAPS) { 1303 // throws linktime exceptions 1304 methodHandle resolved_method = linktime_resolve_interface_method(link_info, CHECK); 1305 runtime_resolve_interface_method(result, resolved_method,link_info.resolved_klass(), 1306 recv, recv_klass, check_null_and_abstract, CHECK); 1307 } 1308 1309 methodHandle LinkResolver::linktime_resolve_interface_method(const LinkInfo& link_info, 1310 TRAPS) { 1311 // normal interface method resolution 1312 methodHandle resolved_method = resolve_interface_method(link_info, Bytecodes::_invokeinterface, CHECK_NULL); 1313 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); 1314 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); 1315 1316 return resolved_method; 1317 } 1318 1319 // throws runtime exceptions 1320 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, 1321 const methodHandle& resolved_method, 1322 KlassHandle resolved_klass, 1323 Handle recv, 1324 KlassHandle recv_klass, 1325 bool check_null_and_abstract, TRAPS) { 1326 // check if receiver exists 1327 if (check_null_and_abstract && recv.is_null()) { 1328 THROW(vmSymbols::java_lang_NullPointerException()); 1329 } 1330 1331 // check if receiver klass implements the resolved interface 1332 if (!recv_klass->is_subtype_of(resolved_klass())) { 1333 ResourceMark rm(THREAD); 1334 char buf[200]; 1335 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", 1336 recv_klass()->external_name(), 1337 resolved_klass()->external_name()); 1338 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); 1339 } 1340 1341 // do lookup based on receiver klass 1342 // This search must match the linktime preparation search for itable initialization 1343 // to correctly enforce loader constraints for interface method inheritance 1344 methodHandle sel_method = lookup_instance_method_in_klasses(recv_klass, 1345 resolved_method->name(), 1346 resolved_method->signature(), CHECK); 1347 if (sel_method.is_null() && !check_null_and_abstract) { 1348 // In theory this is a harmless placeholder value, but 1349 // in practice leaving in null affects the nsk default method tests. 1350 // This needs further study. 1351 sel_method = resolved_method; 1352 } 1353 // check if method exists 1354 if (sel_method.is_null()) { 1355 ResourceMark rm(THREAD); 1356 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), 1357 Method::name_and_sig_as_C_string(recv_klass(), 1358 resolved_method->name(), 1359 resolved_method->signature())); 1360 } 1361 // check access 1362 // Throw Illegal Access Error if sel_method is not public. 1363 if (!sel_method->is_public()) { 1364 ResourceMark rm(THREAD); 1365 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), 1366 Method::name_and_sig_as_C_string(recv_klass(), 1367 sel_method->name(), 1368 sel_method->signature())); 1369 } 1370 // check if abstract 1371 if (check_null_and_abstract && sel_method->is_abstract()) { 1372 ResourceMark rm(THREAD); 1373 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), 1374 Method::name_and_sig_as_C_string(recv_klass(), 1375 sel_method->name(), 1376 sel_method->signature())); 1377 } 1378 1379 if (log_develop_is_enabled(Trace, itables)) { 1380 trace_method_resolution("invokeinterface selected method: receiver-class", 1381 recv_klass, resolved_klass, sel_method, true); 1382 } 1383 // setup result 1384 if (!resolved_method->has_itable_index()) { 1385 int vtable_index = resolved_method->vtable_index(); 1386 assert(vtable_index == sel_method->vtable_index(), "sanity check"); 1387 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); 1388 } else { 1389 int itable_index = resolved_method()->itable_index(); 1390 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); 1391 } 1392 } 1393 1394 1395 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( 1396 const LinkInfo& link_info) { 1397 EXCEPTION_MARK; 1398 methodHandle method_result = linktime_resolve_interface_method(link_info, THREAD); 1399 if (HAS_PENDING_EXCEPTION) { 1400 CLEAR_PENDING_EXCEPTION; 1401 return methodHandle(); 1402 } else { 1403 return method_result; 1404 } 1405 } 1406 1407 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( 1408 const LinkInfo& link_info) { 1409 EXCEPTION_MARK; 1410 methodHandle method_result = linktime_resolve_virtual_method(link_info, THREAD); 1411 if (HAS_PENDING_EXCEPTION) { 1412 CLEAR_PENDING_EXCEPTION; 1413 return methodHandle(); 1414 } else { 1415 return method_result; 1416 } 1417 } 1418 1419 methodHandle LinkResolver::resolve_virtual_call_or_null( 1420 KlassHandle receiver_klass, 1421 const LinkInfo& link_info) { 1422 EXCEPTION_MARK; 1423 CallInfo info; 1424 resolve_virtual_call(info, Handle(), receiver_klass, link_info, false, THREAD); 1425 if (HAS_PENDING_EXCEPTION) { 1426 CLEAR_PENDING_EXCEPTION; 1427 return methodHandle(); 1428 } 1429 return info.selected_method(); 1430 } 1431 1432 methodHandle LinkResolver::resolve_interface_call_or_null( 1433 KlassHandle receiver_klass, 1434 const LinkInfo& link_info) { 1435 EXCEPTION_MARK; 1436 CallInfo info; 1437 resolve_interface_call(info, Handle(), receiver_klass, link_info, false, THREAD); 1438 if (HAS_PENDING_EXCEPTION) { 1439 CLEAR_PENDING_EXCEPTION; 1440 return methodHandle(); 1441 } 1442 return info.selected_method(); 1443 } 1444 1445 int LinkResolver::resolve_virtual_vtable_index(KlassHandle receiver_klass, 1446 const LinkInfo& link_info) { 1447 EXCEPTION_MARK; 1448 CallInfo info; 1449 resolve_virtual_call(info, Handle(), receiver_klass, link_info, 1450 /*check_null_or_abstract*/false, THREAD); 1451 if (HAS_PENDING_EXCEPTION) { 1452 CLEAR_PENDING_EXCEPTION; 1453 return Method::invalid_vtable_index; 1454 } 1455 return info.vtable_index(); 1456 } 1457 1458 methodHandle LinkResolver::resolve_static_call_or_null(const LinkInfo& link_info) { 1459 EXCEPTION_MARK; 1460 CallInfo info; 1461 resolve_static_call(info, link_info, /*initialize_class*/false, THREAD); 1462 if (HAS_PENDING_EXCEPTION) { 1463 CLEAR_PENDING_EXCEPTION; 1464 return methodHandle(); 1465 } 1466 return info.selected_method(); 1467 } 1468 1469 methodHandle LinkResolver::resolve_special_call_or_null(const LinkInfo& link_info) { 1470 EXCEPTION_MARK; 1471 CallInfo info; 1472 resolve_special_call(info, link_info, THREAD); 1473 if (HAS_PENDING_EXCEPTION) { 1474 CLEAR_PENDING_EXCEPTION; 1475 return methodHandle(); 1476 } 1477 return info.selected_method(); 1478 } 1479 1480 1481 1482 //------------------------------------------------------------------------------------------------------------------------ 1483 // ConstantPool entries 1484 1485 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, const constantPoolHandle& pool, int index, Bytecodes::Code byte, TRAPS) { 1486 switch (byte) { 1487 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; 1488 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; 1489 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; 1490 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; 1491 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; 1492 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; 1493 } 1494 return; 1495 } 1496 1497 void LinkResolver::resolve_invoke(CallInfo& result, Handle& recv, 1498 const methodHandle& attached_method, 1499 Bytecodes::Code byte, TRAPS) { 1500 KlassHandle defc = attached_method->method_holder(); 1501 Symbol* name = attached_method->name(); 1502 Symbol* type = attached_method->signature(); 1503 LinkInfo link_info(defc, name, type); 1504 switch(byte) { 1505 case Bytecodes::_invokevirtual: 1506 resolve_virtual_call(result, recv, recv->klass(), link_info, 1507 /*check_null_and_abstract=*/true, CHECK); 1508 break; 1509 case Bytecodes::_invokeinterface: 1510 resolve_interface_call(result, recv, recv->klass(), link_info, 1511 /*check_null_and_abstract=*/true, CHECK); 1512 break; 1513 case Bytecodes::_invokestatic: 1514 resolve_static_call(result, link_info, /*initialize_class=*/false, CHECK); 1515 break; 1516 case Bytecodes::_invokespecial: 1517 resolve_special_call(result, link_info, CHECK); 1518 break; 1519 default: 1520 fatal("bad call: %s", Bytecodes::name(byte)); 1521 } 1522 } 1523 1524 void LinkResolver::resolve_invokestatic(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) { 1525 LinkInfo link_info(pool, index, CHECK); 1526 resolve_static_call(result, link_info, /*initialize_class*/true, CHECK); 1527 } 1528 1529 1530 void LinkResolver::resolve_invokespecial(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) { 1531 LinkInfo link_info(pool, index, CHECK); 1532 resolve_special_call(result, link_info, CHECK); 1533 } 1534 1535 1536 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, 1537 const constantPoolHandle& pool, int index, 1538 TRAPS) { 1539 1540 LinkInfo link_info(pool, index, CHECK); 1541 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); 1542 resolve_virtual_call(result, recv, recvrKlass, link_info, /*check_null_or_abstract*/true, CHECK); 1543 } 1544 1545 1546 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, const constantPoolHandle& pool, int index, TRAPS) { 1547 LinkInfo link_info(pool, index, CHECK); 1548 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); 1549 resolve_interface_call(result, recv, recvrKlass, link_info, true, CHECK); 1550 } 1551 1552 1553 void LinkResolver::resolve_invokehandle(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) { 1554 // This guy is reached from InterpreterRuntime::resolve_invokehandle. 1555 LinkInfo link_info(pool, index, CHECK); 1556 if (TraceMethodHandles) { 1557 ResourceMark rm(THREAD); 1558 tty->print_cr("resolve_invokehandle %s %s", link_info.name()->as_C_string(), 1559 link_info.signature()->as_C_string()); 1560 } 1561 resolve_handle_call(result, link_info, CHECK); 1562 } 1563 1564 void LinkResolver::resolve_handle_call(CallInfo& result, 1565 const LinkInfo& link_info, 1566 TRAPS) { 1567 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar 1568 KlassHandle resolved_klass = link_info.resolved_klass(); 1569 assert(resolved_klass() == SystemDictionary::MethodHandle_klass() || 1570 resolved_klass() == SystemDictionary::VarHandle_klass(), ""); 1571 assert(MethodHandles::is_signature_polymorphic_name(link_info.name()), ""); 1572 Handle resolved_appendix; 1573 Handle resolved_method_type; 1574 methodHandle resolved_method = lookup_polymorphic_method(link_info, 1575 &resolved_appendix, &resolved_method_type, CHECK); 1576 result.set_handle(resolved_klass, resolved_method, resolved_appendix, resolved_method_type, CHECK); 1577 } 1578 1579 static void wrap_invokedynamic_exception(TRAPS) { 1580 if (HAS_PENDING_EXCEPTION) { 1581 if (TraceMethodHandles) { 1582 tty->print_cr("invokedynamic throws BSME for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION)); 1583 PENDING_EXCEPTION->print(); 1584 } 1585 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { 1586 // throw these guys, since they are already wrapped 1587 return; 1588 } 1589 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { 1590 // intercept only LinkageErrors which might have failed to wrap 1591 return; 1592 } 1593 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. 1594 Handle nested_exception(THREAD, PENDING_EXCEPTION); 1595 CLEAR_PENDING_EXCEPTION; 1596 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) 1597 } 1598 } 1599 1600 void LinkResolver::resolve_invokedynamic(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) { 1601 Symbol* method_name = pool->name_ref_at(index); 1602 Symbol* method_signature = pool->signature_ref_at(index); 1603 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); 1604 1605 // Resolve the bootstrap specifier (BSM + optional arguments). 1606 Handle bootstrap_specifier; 1607 // Check if CallSite has been bound already: 1608 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); 1609 if (cpce->is_f1_null()) { 1610 int pool_index = cpce->constant_pool_index(); 1611 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, THREAD); 1612 wrap_invokedynamic_exception(CHECK); 1613 assert(bsm_info != NULL, ""); 1614 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. 1615 bootstrap_specifier = Handle(THREAD, bsm_info); 1616 } 1617 if (!cpce->is_f1_null()) { 1618 methodHandle method( THREAD, cpce->f1_as_method()); 1619 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); 1620 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); 1621 result.set_handle(method, appendix, method_type, THREAD); 1622 wrap_invokedynamic_exception(CHECK); 1623 return; 1624 } 1625 1626 if (TraceMethodHandles) { 1627 ResourceMark rm(THREAD); 1628 tty->print_cr("resolve_invokedynamic #%d %s %s in %s", 1629 ConstantPool::decode_invokedynamic_index(index), 1630 method_name->as_C_string(), method_signature->as_C_string(), 1631 current_klass->name()->as_C_string()); 1632 tty->print(" BSM info: "); bootstrap_specifier->print(); 1633 } 1634 1635 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); 1636 } 1637 1638 void LinkResolver::resolve_dynamic_call(CallInfo& result, 1639 Handle bootstrap_specifier, 1640 Symbol* method_name, Symbol* method_signature, 1641 KlassHandle current_klass, 1642 TRAPS) { 1643 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) 1644 // The appendix argument is likely to be a freshly-created CallSite. 1645 Handle resolved_appendix; 1646 Handle resolved_method_type; 1647 methodHandle resolved_method = 1648 SystemDictionary::find_dynamic_call_site_invoker(current_klass, 1649 bootstrap_specifier, 1650 method_name, method_signature, 1651 &resolved_appendix, 1652 &resolved_method_type, 1653 THREAD); 1654 wrap_invokedynamic_exception(CHECK); 1655 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, THREAD); 1656 wrap_invokedynamic_exception(CHECK); 1657 }