duke@435: /* jrose@2638: * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * trims@1907: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA trims@1907: * or visit www.oracle.com if you need additional information or have any trims@1907: * questions. duke@435: * duke@435: */ duke@435: stefank@2314: #include "precompiled.hpp" stefank@2314: #include "classfile/systemDictionary.hpp" stefank@2314: #include "classfile/vmSymbols.hpp" stefank@2314: #include "compiler/compileBroker.hpp" stefank@2314: #include "gc_interface/collectedHeap.inline.hpp" stefank@2314: #include "interpreter/bytecode.hpp" stefank@2314: #include "interpreter/interpreterRuntime.hpp" stefank@2314: #include "interpreter/linkResolver.hpp" stefank@2314: #include "memory/resourceArea.hpp" stefank@2314: #include "memory/universe.inline.hpp" stefank@2314: #include "oops/instanceKlass.hpp" stefank@2314: #include "oops/objArrayOop.hpp" stefank@2314: #include "prims/methodHandles.hpp" stefank@2314: #include "prims/nativeLookup.hpp" stefank@2314: #include "runtime/compilationPolicy.hpp" stefank@2314: #include "runtime/fieldDescriptor.hpp" stefank@2314: #include "runtime/frame.inline.hpp" stefank@2314: #include "runtime/handles.inline.hpp" stefank@2314: #include "runtime/reflection.hpp" stefank@2314: #include "runtime/signature.hpp" stefank@2314: #include "runtime/vmThread.hpp" stefank@2314: #ifdef TARGET_OS_FAMILY_linux stefank@2314: # include "thread_linux.inline.hpp" stefank@2314: #endif stefank@2314: #ifdef TARGET_OS_FAMILY_solaris stefank@2314: # include "thread_solaris.inline.hpp" stefank@2314: #endif stefank@2314: #ifdef TARGET_OS_FAMILY_windows stefank@2314: # include "thread_windows.inline.hpp" stefank@2314: #endif never@3156: #ifdef TARGET_OS_FAMILY_bsd never@3156: # include "thread_bsd.inline.hpp" never@3156: #endif duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // Implementation of FieldAccessInfo duke@435: coleenp@2497: void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset, duke@435: BasicType field_type, AccessFlags access_flags) { duke@435: _klass = klass; duke@435: _name = name; duke@435: _field_index = field_index; duke@435: _field_offset = field_offset; duke@435: _field_type = field_type; duke@435: _access_flags = access_flags; duke@435: } duke@435: duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // Implementation of CallInfo duke@435: duke@435: duke@435: void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { duke@435: int vtable_index = methodOopDesc::nonvirtual_vtable_index; duke@435: set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); duke@435: } duke@435: duke@435: duke@435: void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { duke@435: // This is only called for interface methods. If the resolved_method duke@435: // comes from java/lang/Object, it can be the subject of a virtual call, so duke@435: // we should pick the vtable index from the resolved method. duke@435: // Other than that case, there is no valid vtable index to specify. duke@435: int vtable_index = methodOopDesc::invalid_vtable_index; never@1577: if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { duke@435: assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); duke@435: vtable_index = resolved_method->vtable_index(); duke@435: } duke@435: set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); duke@435: } duke@435: duke@435: void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { duke@435: assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); duke@435: set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); twisti@3969: assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); duke@435: } duke@435: twisti@3969: void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, TRAPS) { twisti@3969: if (resolved_method.is_null()) { twisti@3969: THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); twisti@3969: } jrose@2015: KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); twisti@3969: assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || twisti@3969: resolved_method->is_compiled_lambda_form(), twisti@3969: "linkMethod must return one of these"); jrose@2015: int vtable_index = methodOopDesc::nonvirtual_vtable_index; jrose@2015: assert(resolved_method->vtable_index() == vtable_index, ""); twisti@3969: set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); twisti@3969: _resolved_appendix = resolved_appendix; jrose@2015: } jrose@2015: duke@435: void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { duke@435: assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); duke@435: _resolved_klass = resolved_klass; duke@435: _selected_klass = selected_klass; duke@435: _resolved_method = resolved_method; duke@435: _selected_method = selected_method; duke@435: _vtable_index = vtable_index; twisti@3969: _resolved_appendix = Handle(); iveresov@2138: if (CompilationPolicy::must_be_compiled(selected_method)) { twisti@1570: // This path is unusual, mostly used by the '-Xcomp' stress test mode. twisti@1570: iveresov@2138: // Note: with several active threads, the must_be_compiled may be true iveresov@2138: // while can_be_compiled is false; remove assert iveresov@2138: // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); duke@435: if (THREAD->is_Compiler_thread()) { duke@435: // don't force compilation, resolve was on behalf of compiler duke@435: return; duke@435: } twisti@1570: if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { twisti@1570: // 'is_not_initialized' means not only '!is_initialized', but also that twisti@1570: // initialization has not been started yet ('!being_initialized') twisti@1570: // Do not force compilation of methods in uninitialized classes. twisti@1570: // Note that doing this would throw an assert later, twisti@1570: // in CompileBroker::compile_method. twisti@1570: // We sometimes use the link resolver to do reflective lookups twisti@1570: // even before classes are initialized. twisti@1570: return; twisti@1570: } duke@435: CompileBroker::compile_method(selected_method, InvocationEntryBci, iveresov@3035: CompilationPolicy::policy()->initial_compile_level(), iveresov@2138: methodHandle(), 0, "must_be_compiled", CHECK); duke@435: } duke@435: } duke@435: duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // Klass resolution duke@435: duke@435: void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { duke@435: if (!Reflection::verify_class_access(ref_klass->as_klassOop(), duke@435: sel_klass->as_klassOop(), duke@435: true)) { duke@435: ResourceMark rm(THREAD); duke@435: Exceptions::fthrow( duke@435: THREAD_AND_LOCATION, coleenp@2497: vmSymbols::java_lang_IllegalAccessError(), duke@435: "tried to access class %s from class %s", duke@435: sel_klass->external_name(), duke@435: ref_klass->external_name() duke@435: ); duke@435: return; duke@435: } duke@435: } duke@435: duke@435: void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { duke@435: klassOop result_oop = pool->klass_ref_at(index, CHECK); duke@435: result = KlassHandle(THREAD, result_oop); duke@435: } duke@435: duke@435: void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { duke@435: klassOop result_oop = duke@435: constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); duke@435: result = KlassHandle(THREAD, result_oop); duke@435: } duke@435: duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // Method resolution duke@435: // duke@435: // According to JVM spec. $5.4.3c & $5.4.3d duke@435: coleenp@2497: void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { coleenp@2497: methodOop result_oop = klass->uncached_lookup_method(name, signature); twisti@2698: if (EnableInvokeDynamic && result_oop != NULL) { twisti@3969: vmIntrinsics::ID iid = result_oop->intrinsic_id(); twisti@3969: if (MethodHandles::is_signature_polymorphic(iid)) { twisti@3969: // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. jrose@1862: return; jrose@1862: } jrose@1862: } duke@435: result = methodHandle(THREAD, result_oop); duke@435: } duke@435: duke@435: // returns first instance method coleenp@2497: void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { coleenp@2497: methodOop result_oop = klass->uncached_lookup_method(name, signature); duke@435: result = methodHandle(THREAD, result_oop); duke@435: while (!result.is_null() && result->is_static()) { duke@435: klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); coleenp@2497: result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); duke@435: } duke@435: } duke@435: duke@435: coleenp@2497: int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { duke@435: ResourceMark rm(THREAD); duke@435: klassVtable *vt = instanceKlass::cast(klass())->vtable(); coleenp@2497: return vt->index_of_miranda(name, signature); duke@435: } duke@435: coleenp@2497: void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { duke@435: instanceKlass *ik = instanceKlass::cast(klass()); coleenp@2497: result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); duke@435: } duke@435: twisti@3969: void LinkResolver::lookup_polymorphic_method(methodHandle& result, twisti@3969: KlassHandle klass, Symbol* name, Symbol* full_signature, twisti@3969: KlassHandle current_klass, twisti@3969: Handle* appendix_result_or_null, twisti@3969: TRAPS) { twisti@3969: vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); twisti@3969: if (TraceMethodHandles) { twisti@3969: tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", twisti@3969: vmIntrinsics::name_at(iid), klass->external_name(), twisti@3969: name->as_C_string(), full_signature->as_C_string()); twisti@3969: } twisti@2698: if (EnableInvokeDynamic && jrose@1862: klass() == SystemDictionary::MethodHandle_klass() && twisti@3969: iid != vmIntrinsics::_none) { twisti@3969: if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { twisti@3969: // Most of these do not need an up-call to Java to resolve, so can be done anywhere. twisti@3969: // Do not erase last argument type (MemberName) if it is a static linkTo method. twisti@3969: bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); twisti@3969: TempNewSymbol basic_signature = twisti@3969: MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); twisti@3969: if (TraceMethodHandles) { twisti@3969: tty->print_cr("lookup_polymorphic_method %s %s => basic %s", twisti@3969: name->as_C_string(), twisti@3969: full_signature->as_C_string(), twisti@3969: basic_signature->as_C_string()); jrose@2015: } twisti@3969: result = SystemDictionary::find_method_handle_intrinsic(iid, twisti@3969: basic_signature, twisti@3969: CHECK); twisti@3969: if (result.not_null()) { twisti@3969: assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); twisti@3969: assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); twisti@3969: assert(basic_signature == result->signature(), "predict the result signature"); twisti@3969: if (TraceMethodHandles) { twisti@3969: tty->print("lookup_polymorphic_method => intrinsic "); twisti@3969: result->print_on(tty); twisti@3969: } twisti@3969: return; twisti@3969: } twisti@3969: } else if (iid == vmIntrinsics::_invokeGeneric twisti@3969: && !THREAD->is_Compiler_thread() twisti@3969: && appendix_result_or_null != NULL) { twisti@3969: // This is a method with type-checking semantics. twisti@3969: // We will ask Java code to spin an adapter method for it. twisti@3969: if (!MethodHandles::enabled()) { twisti@3969: // Make sure the Java part of the runtime has been booted up. twisti@3969: klassOop natives = SystemDictionary::MethodHandleNatives_klass(); twisti@3969: if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { twisti@3969: SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), twisti@3969: Handle(), twisti@3969: Handle(), twisti@3969: true, twisti@3969: CHECK); twisti@3969: } twisti@3969: } twisti@3969: twisti@3969: Handle appendix; twisti@3969: result = SystemDictionary::find_method_handle_invoker(name, twisti@3969: full_signature, twisti@3969: current_klass, twisti@3969: &appendix, twisti@3969: CHECK); twisti@3969: if (TraceMethodHandles) { twisti@3969: tty->print("lookup_polymorphic_method => (via Java) "); twisti@3969: result->print_on(tty); twisti@3969: tty->print(" lookup_polymorphic_method => appendix = "); twisti@3969: if (appendix.is_null()) tty->print_cr("(none)"); twisti@3969: else appendix->print_on(tty); twisti@3969: } twisti@3969: if (result.not_null()) { twisti@3969: #ifdef ASSERT twisti@3969: TempNewSymbol basic_signature = twisti@3969: MethodHandles::lookup_basic_type_signature(full_signature, CHECK); twisti@3969: int actual_size_of_params = result->size_of_parameters(); twisti@3969: int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); twisti@3969: // +1 for MethodHandle.this, +1 for trailing MethodType twisti@3969: if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; twisti@3969: if (appendix.not_null()) expected_size_of_params += 1; twisti@3969: if (actual_size_of_params != expected_size_of_params) { twisti@3969: tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); twisti@3969: tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); twisti@3969: result->print(); twisti@3969: } twisti@3969: assert(actual_size_of_params == expected_size_of_params, twisti@3969: err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); twisti@3969: #endif //ASSERT twisti@3969: twisti@3969: assert(appendix_result_or_null != NULL, ""); twisti@3969: (*appendix_result_or_null) = appendix; twisti@3969: return; twisti@3969: } jrose@1145: } jrose@1145: } jrose@1145: } jrose@1145: duke@435: void LinkResolver::check_method_accessability(KlassHandle ref_klass, duke@435: KlassHandle resolved_klass, duke@435: KlassHandle sel_klass, duke@435: methodHandle sel_method, duke@435: TRAPS) { duke@435: duke@435: AccessFlags flags = sel_method->access_flags(); duke@435: duke@435: // Special case: arrays always override "clone". JVMS 2.15. duke@435: // If the resolved klass is an array class, and the declaring class duke@435: // is java.lang.Object and the method is "clone", set the flags duke@435: // to public. duke@435: // duke@435: // We'll check for the method name first, as that's most likely duke@435: // to be false (so we'll short-circuit out of these tests). duke@435: if (sel_method->name() == vmSymbols::clone_name() && never@1577: sel_klass() == SystemDictionary::Object_klass() && duke@435: resolved_klass->oop_is_array()) { duke@435: // We need to change "protected" to "public". duke@435: assert(flags.is_protected(), "clone not protected?"); duke@435: jint new_flags = flags.as_int(); duke@435: new_flags = new_flags & (~JVM_ACC_PROTECTED); duke@435: new_flags = new_flags | JVM_ACC_PUBLIC; duke@435: flags.set_flags(new_flags); duke@435: } twisti@3969: // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); duke@435: duke@435: if (!Reflection::verify_field_access(ref_klass->as_klassOop(), duke@435: resolved_klass->as_klassOop(), duke@435: sel_klass->as_klassOop(), duke@435: flags, duke@435: true)) { duke@435: ResourceMark rm(THREAD); duke@435: Exceptions::fthrow( duke@435: THREAD_AND_LOCATION, coleenp@2497: vmSymbols::java_lang_IllegalAccessError(), duke@435: "tried to access method %s.%s%s from class %s", duke@435: sel_klass->external_name(), duke@435: sel_method->name()->as_C_string(), duke@435: sel_method->signature()->as_C_string(), duke@435: ref_klass->external_name() duke@435: ); duke@435: return; duke@435: } duke@435: } duke@435: twisti@3969: void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, twisti@3969: Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { duke@435: duke@435: // resolve klass twisti@3969: if (code == Bytecodes::_invokedynamic) { twisti@3969: resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); twisti@3969: Symbol* method_name = vmSymbols::invoke_name(); twisti@3969: Symbol* method_signature = pool->signature_ref_at(index); twisti@3969: KlassHandle current_klass(THREAD, pool->pool_holder()); twisti@3969: resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); twisti@3969: return; twisti@3969: } twisti@3969: duke@435: resolve_klass(resolved_klass, pool, index, CHECK); duke@435: coleenp@2497: Symbol* method_name = pool->name_ref_at(index); coleenp@2497: Symbol* method_signature = pool->signature_ref_at(index); duke@435: KlassHandle current_klass(THREAD, pool->pool_holder()); duke@435: jrose@2982: if (pool->has_preresolution() jrose@2982: || (resolved_klass() == SystemDictionary::MethodHandle_klass() && twisti@3969: MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { jrose@2982: methodOop result_oop = constantPoolOopDesc::method_at_if_loaded(pool, index); jrose@2982: if (result_oop != NULL) { jrose@2982: resolved_method = methodHandle(THREAD, result_oop); jrose@2982: return; jrose@2982: } jrose@2982: } jrose@2982: twisti@3969: if (code == Bytecodes::_invokeinterface) { twisti@3969: resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); twisti@3969: } else { twisti@3969: resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); twisti@3969: } duke@435: } duke@435: duke@435: void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, Symbol* method_signature, duke@435: KlassHandle current_klass, bool check_access, TRAPS) { duke@435: duke@435: // 1. check if klass is not interface duke@435: if (resolved_klass->is_interface()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: twisti@3969: Handle nested_exception; twisti@3969: duke@435: // 2. lookup method in resolved klass and its super klasses duke@435: lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); duke@435: duke@435: if (resolved_method.is_null()) { // not found in the class hierarchy duke@435: // 3. lookup method in all the interfaces implemented by the resolved klass duke@435: lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); duke@435: duke@435: if (resolved_method.is_null()) { twisti@3969: // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc twisti@3969: lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, twisti@3969: current_klass, (Handle*)NULL, THREAD); twisti@3969: if (HAS_PENDING_EXCEPTION) { twisti@3969: nested_exception = Handle(THREAD, PENDING_EXCEPTION); twisti@3969: CLEAR_PENDING_EXCEPTION; twisti@3969: } jrose@1145: } jrose@1145: jrose@1145: if (resolved_method.is_null()) { duke@435: // 4. method lookup failed duke@435: ResourceMark rm(THREAD); twisti@3969: THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), twisti@3969: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), twisti@3969: method_name, twisti@3969: method_signature), twisti@3969: nested_exception); duke@435: } duke@435: } duke@435: duke@435: // 5. check if method is concrete duke@435: if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), coleenp@2497: method_name, coleenp@2497: method_signature)); duke@435: } duke@435: duke@435: // 6. access checks, access checking may be turned off when calling from within the VM. duke@435: if (check_access) { duke@435: assert(current_klass.not_null() , "current_klass should not be null"); duke@435: duke@435: // check if method can be accessed by the referring class duke@435: check_method_accessability(current_klass, duke@435: resolved_klass, duke@435: KlassHandle(THREAD, resolved_method->method_holder()), duke@435: resolved_method, duke@435: CHECK); duke@435: duke@435: // check loader constraints duke@435: Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); duke@435: Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); duke@435: { duke@435: ResourceMark rm(THREAD); duke@435: char* failed_type_name = duke@435: SystemDictionary::check_signature_loaders(method_signature, loader, duke@435: class_loader, true, CHECK); duke@435: if (failed_type_name != NULL) { duke@435: const char* msg = "loader constraint violation: when resolving method" duke@435: " \"%s\" the class loader (instance of %s) of the current class, %s," duke@435: " and the class loader (instance of %s) for resolved class, %s, have" duke@435: " different Class objects for the type %s used in the signature"; coleenp@2497: char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); duke@435: const char* loader1 = SystemDictionary::loader_name(loader()); duke@435: char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); duke@435: const char* loader2 = SystemDictionary::loader_name(class_loader()); duke@435: char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); duke@435: size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + duke@435: strlen(current) + strlen(loader2) + strlen(resolved) + duke@435: strlen(failed_type_name); duke@435: char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); duke@435: jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, duke@435: resolved, failed_type_name); duke@435: THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); duke@435: } duke@435: } duke@435: } duke@435: } duke@435: duke@435: void LinkResolver::resolve_interface_method(methodHandle& resolved_method, duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, coleenp@2497: Symbol* method_signature, duke@435: KlassHandle current_klass, duke@435: bool check_access, TRAPS) { duke@435: duke@435: // check if klass is interface duke@435: if (!resolved_klass->is_interface()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: duke@435: // lookup method in this interface or its super, java.lang.Object duke@435: lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); duke@435: duke@435: if (resolved_method.is_null()) { duke@435: // lookup method in all the super-interfaces duke@435: lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); duke@435: if (resolved_method.is_null()) { duke@435: // no method found duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), coleenp@2497: method_name, coleenp@2497: method_signature)); duke@435: } duke@435: } duke@435: duke@435: if (check_access) { duke@435: HandleMark hm(THREAD); duke@435: Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); duke@435: Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); duke@435: { duke@435: ResourceMark rm(THREAD); duke@435: char* failed_type_name = duke@435: SystemDictionary::check_signature_loaders(method_signature, loader, duke@435: class_loader, true, CHECK); duke@435: if (failed_type_name != NULL) { duke@435: const char* msg = "loader constraint violation: when resolving " duke@435: "interface method \"%s\" the class loader (instance of %s) of the " duke@435: "current class, %s, and the class loader (instance of %s) for " duke@435: "resolved class, %s, have different Class objects for the type %s " duke@435: "used in the signature"; coleenp@2497: char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); duke@435: const char* loader1 = SystemDictionary::loader_name(loader()); duke@435: char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); duke@435: const char* loader2 = SystemDictionary::loader_name(class_loader()); duke@435: char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); duke@435: size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + duke@435: strlen(current) + strlen(loader2) + strlen(resolved) + duke@435: strlen(failed_type_name); duke@435: char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); duke@435: jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, duke@435: resolved, failed_type_name); duke@435: THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); duke@435: } duke@435: } duke@435: } duke@435: } duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // Field resolution duke@435: duke@435: void LinkResolver::check_field_accessability(KlassHandle ref_klass, duke@435: KlassHandle resolved_klass, duke@435: KlassHandle sel_klass, duke@435: fieldDescriptor& fd, duke@435: TRAPS) { duke@435: if (!Reflection::verify_field_access(ref_klass->as_klassOop(), duke@435: resolved_klass->as_klassOop(), duke@435: sel_klass->as_klassOop(), duke@435: fd.access_flags(), duke@435: true)) { duke@435: ResourceMark rm(THREAD); duke@435: Exceptions::fthrow( duke@435: THREAD_AND_LOCATION, coleenp@2497: vmSymbols::java_lang_IllegalAccessError(), duke@435: "tried to access field %s.%s from class %s", duke@435: sel_klass->external_name(), duke@435: fd.name()->as_C_string(), duke@435: ref_klass->external_name() duke@435: ); duke@435: return; duke@435: } duke@435: } duke@435: duke@435: void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { duke@435: resolve_field(result, pool, index, byte, check_only, true, CHECK); duke@435: } duke@435: duke@435: void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { duke@435: assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || duke@435: byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); duke@435: duke@435: bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); duke@435: bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); duke@435: duke@435: // resolve specified klass duke@435: KlassHandle resolved_klass; duke@435: if (update_pool) { duke@435: resolve_klass(resolved_klass, pool, index, CHECK); duke@435: } else { duke@435: resolve_klass_no_update(resolved_klass, pool, index, CHECK); duke@435: } duke@435: // Load these early in case the resolve of the containing klass fails coleenp@2497: Symbol* field = pool->name_ref_at(index); coleenp@2497: Symbol* sig = pool->signature_ref_at(index); duke@435: // Check if there's a resolved klass containing the field duke@435: if( resolved_klass.is_null() ) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); duke@435: } duke@435: duke@435: // Resolve instance field duke@435: fieldDescriptor fd; // find_field initializes fd if found duke@435: KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); duke@435: // check if field exists; i.e., if a klass containing the field def has been selected duke@435: if (sel_klass.is_null()){ duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); duke@435: } duke@435: duke@435: // check access duke@435: KlassHandle ref_klass(THREAD, pool->pool_holder()); duke@435: check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); duke@435: duke@435: // check for errors duke@435: if (is_static != fd.is_static()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char msg[200]; duke@435: jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string()); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); duke@435: } duke@435: duke@435: // Final fields can only be accessed from its own class. duke@435: if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { duke@435: THROW(vmSymbols::java_lang_IllegalAccessError()); duke@435: } duke@435: duke@435: // initialize resolved_klass if necessary duke@435: // note 1: the klass which declared the field must be initialized (i.e, sel_klass) duke@435: // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) duke@435: // duke@435: // note 2: we don't want to force initialization if we are just checking duke@435: // if the field access is legal; e.g., during compilation duke@435: if (is_static && !check_only) { duke@435: sel_klass->initialize(CHECK); duke@435: } duke@435: duke@435: { duke@435: HandleMark hm(THREAD); duke@435: Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); duke@435: Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); coleenp@2497: Symbol* signature_ref = pool->signature_ref_at(index); duke@435: { duke@435: ResourceMark rm(THREAD); duke@435: char* failed_type_name = duke@435: SystemDictionary::check_signature_loaders(signature_ref, duke@435: ref_loader, sel_loader, duke@435: false, duke@435: CHECK); duke@435: if (failed_type_name != NULL) { duke@435: const char* msg = "loader constraint violation: when resolving field" duke@435: " \"%s\" the class loader (instance of %s) of the referring class, " duke@435: "%s, and the class loader (instance of %s) for the field's resolved " duke@435: "type, %s, have different Class objects for that type"; coleenp@2497: char* field_name = field->as_C_string(); duke@435: const char* loader1 = SystemDictionary::loader_name(ref_loader()); duke@435: char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); duke@435: const char* loader2 = SystemDictionary::loader_name(sel_loader()); duke@435: size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + duke@435: strlen(sel) + strlen(loader2) + strlen(failed_type_name); duke@435: char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); duke@435: jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, duke@435: failed_type_name); duke@435: THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); duke@435: } duke@435: } duke@435: } duke@435: duke@435: // return information. note that the klass is set to the actual klass containing the duke@435: // field, otherwise access of static fields in superclasses will not work. duke@435: KlassHandle holder (THREAD, fd.field_holder()); coleenp@2497: Symbol* name = fd.name(); duke@435: result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); duke@435: } duke@435: duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // Invoke resolution duke@435: // duke@435: // Naming conventions: duke@435: // duke@435: // resolved_method the specified method (i.e., static receiver specified via constant pool index) duke@435: // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) duke@435: // resolved_klass the specified klass (i.e., specified via constant pool index) duke@435: // recv_klass the receiver klass duke@435: duke@435: coleenp@2497: void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, coleenp@2497: Symbol* method_signature, KlassHandle current_klass, duke@435: bool check_access, bool initialize_class, TRAPS) { duke@435: methodHandle resolved_method; duke@435: linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); duke@435: duke@435: // Initialize klass (this should only happen if everything is ok) duke@435: if (initialize_class && resolved_klass->should_be_initialized()) { duke@435: resolved_klass->initialize(CHECK); duke@435: linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: } duke@435: duke@435: // setup result duke@435: result.set_static(resolved_klass, resolved_method, CHECK); duke@435: } duke@435: duke@435: // throws linktime exceptions duke@435: void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, Symbol* method_signature, duke@435: KlassHandle current_klass, bool check_access, TRAPS) { duke@435: duke@435: resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); duke@435: duke@435: // check if static duke@435: if (!resolved_method->is_static()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: } duke@435: duke@435: coleenp@2497: void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, coleenp@2497: Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { duke@435: methodHandle resolved_method; duke@435: linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); duke@435: } duke@435: duke@435: // throws linktime exceptions duke@435: void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, Symbol* method_signature, duke@435: KlassHandle current_klass, bool check_access, TRAPS) { duke@435: duke@435: resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: duke@435: // check if method name is , that it is found in same klass as static type duke@435: if (resolved_method->name() == vmSymbols::object_initializer_name() && duke@435: resolved_method->method_holder() != resolved_klass()) { duke@435: ResourceMark rm(THREAD); duke@435: Exceptions::fthrow( duke@435: THREAD_AND_LOCATION, coleenp@2497: vmSymbols::java_lang_NoSuchMethodError(), duke@435: "%s: method %s%s not found", duke@435: resolved_klass->external_name(), duke@435: resolved_method->name()->as_C_string(), duke@435: resolved_method->signature()->as_C_string() duke@435: ); duke@435: return; duke@435: } duke@435: duke@435: // check if not static duke@435: if (resolved_method->is_static()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), duke@435: "Expecting non-static method %s", duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: } duke@435: duke@435: // throws runtime exceptions duke@435: void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, duke@435: KlassHandle current_klass, bool check_access, TRAPS) { duke@435: duke@435: // resolved method is selected method unless we have an old-style lookup duke@435: methodHandle sel_method(THREAD, resolved_method()); duke@435: duke@435: // check if this is an old-style super call and do a new lookup if so duke@435: { KlassHandle method_klass = KlassHandle(THREAD, duke@435: resolved_method->method_holder()); duke@435: duke@435: if (check_access && duke@435: // a) check if ACC_SUPER flag is set for the current class duke@435: current_klass->is_super() && duke@435: // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) duke@435: current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && duke@435: // c) check if the method is not duke@435: resolved_method->name() != vmSymbols::object_initializer_name()) { duke@435: // Lookup super method duke@435: KlassHandle super_klass(THREAD, current_klass->super()); duke@435: lookup_instance_method_in_klasses(sel_method, super_klass, coleenp@2497: resolved_method->name(), coleenp@2497: resolved_method->signature(), CHECK); duke@435: // check if found duke@435: if (sel_method.is_null()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: } duke@435: } duke@435: } duke@435: duke@435: // check if not static duke@435: if (sel_method->is_static()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: duke@435: // check if abstract duke@435: if (sel_method->is_abstract()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: sel_method->name(), duke@435: sel_method->signature())); duke@435: } duke@435: duke@435: // setup result duke@435: result.set_static(resolved_klass, sel_method, CHECK); duke@435: } duke@435: duke@435: void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, duke@435: bool check_access, bool check_null_and_abstract, TRAPS) { duke@435: methodHandle resolved_method; duke@435: linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); duke@435: } duke@435: duke@435: // throws linktime exceptions duke@435: void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, Symbol* method_signature, duke@435: KlassHandle current_klass, bool check_access, TRAPS) { duke@435: // normal method resolution duke@435: resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: duke@435: assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); duke@435: assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); duke@435: duke@435: // check if not static duke@435: if (resolved_method->is_static()) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: } duke@435: duke@435: // throws runtime exceptions duke@435: void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, duke@435: methodHandle resolved_method, duke@435: KlassHandle resolved_klass, duke@435: Handle recv, duke@435: KlassHandle recv_klass, duke@435: bool check_null_and_abstract, duke@435: TRAPS) { duke@435: duke@435: // setup default return values duke@435: int vtable_index = methodOopDesc::invalid_vtable_index; duke@435: methodHandle selected_method; duke@435: duke@435: assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); duke@435: duke@435: // runtime method resolution duke@435: if (check_null_and_abstract && recv.is_null()) { // check if receiver exists duke@435: THROW(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: duke@435: // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's duke@435: // has not been rewritten, and the vtable initialized. duke@435: assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); duke@435: duke@435: // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's duke@435: // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since duke@435: // a missing receiver might result in a bogus lookup. duke@435: assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); duke@435: duke@435: // do lookup based on receiver klass using the vtable index duke@435: if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method duke@435: vtable_index = vtable_index_of_miranda_method(resolved_klass, coleenp@2497: resolved_method->name(), coleenp@2497: resolved_method->signature(), CHECK); duke@435: assert(vtable_index >= 0 , "we should have valid vtable index at this point"); duke@435: duke@435: instanceKlass* inst = instanceKlass::cast(recv_klass()); duke@435: selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); duke@435: } else { duke@435: // at this point we are sure that resolved_method is virtual and not duke@435: // a miranda method; therefore, it must have a valid vtable index. duke@435: vtable_index = resolved_method->vtable_index(); duke@435: // We could get a negative vtable_index for final methods, duke@435: // because as an optimization they are they are never put in the vtable, duke@435: // unless they override an existing method. duke@435: // If we do get a negative, it means the resolved method is the the selected duke@435: // method, and it can never be changed by an override. duke@435: if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { duke@435: assert(resolved_method->can_be_statically_bound(), "cannot override this method"); duke@435: selected_method = resolved_method; duke@435: } else { duke@435: // recv_klass might be an arrayKlassOop but all vtables start at duke@435: // the same place. The cast is to avoid virtual call and assertion. duke@435: instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); duke@435: selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); duke@435: } duke@435: } duke@435: duke@435: // check if method exists duke@435: if (selected_method.is_null()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: } duke@435: duke@435: // check if abstract duke@435: if (check_null_and_abstract && selected_method->is_abstract()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), duke@435: selected_method->name(), duke@435: selected_method->signature())); duke@435: } duke@435: duke@435: // setup result duke@435: result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); duke@435: } duke@435: duke@435: void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, duke@435: bool check_access, bool check_null_and_abstract, TRAPS) { duke@435: methodHandle resolved_method; duke@435: linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); duke@435: } duke@435: duke@435: // throws linktime exceptions coleenp@2497: void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, coleenp@2497: Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { duke@435: // normal interface method resolution duke@435: resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); duke@435: duke@435: assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); duke@435: assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); duke@435: } duke@435: duke@435: // throws runtime exceptions duke@435: void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, duke@435: Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { duke@435: // check if receiver exists duke@435: if (check_null_and_abstract && recv.is_null()) { duke@435: THROW(vmSymbols::java_lang_NullPointerException()); duke@435: } duke@435: duke@435: // check if receiver klass implements the resolved interface duke@435: if (!recv_klass->is_subtype_of(resolved_klass())) { jcoomes@2856: ResourceMark rm(THREAD); duke@435: char buf[200]; duke@435: jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", duke@435: (Klass::cast(recv_klass()))->external_name(), duke@435: (Klass::cast(resolved_klass()))->external_name()); duke@435: THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); duke@435: } duke@435: // do lookup based on receiver klass duke@435: methodHandle sel_method; duke@435: lookup_instance_method_in_klasses(sel_method, recv_klass, coleenp@2497: resolved_method->name(), coleenp@2497: resolved_method->signature(), CHECK); duke@435: // check if method exists duke@435: if (sel_method.is_null()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), duke@435: resolved_method->name(), duke@435: resolved_method->signature())); duke@435: } duke@435: // check if public duke@435: if (!sel_method->is_public()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), duke@435: sel_method->name(), duke@435: sel_method->signature())); duke@435: } duke@435: // check if abstract duke@435: if (check_null_and_abstract && sel_method->is_abstract()) { duke@435: ResourceMark rm(THREAD); duke@435: THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), duke@435: methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), duke@435: sel_method->name(), duke@435: sel_method->signature())); duke@435: } duke@435: // setup result duke@435: result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); duke@435: } duke@435: duke@435: duke@435: methodHandle LinkResolver::linktime_resolve_interface_method_or_null( duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, coleenp@2497: Symbol* method_signature, duke@435: KlassHandle current_klass, duke@435: bool check_access) { duke@435: EXCEPTION_MARK; duke@435: methodHandle method_result; duke@435: linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodHandle(); duke@435: } else { duke@435: return method_result; duke@435: } duke@435: } duke@435: duke@435: methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* method_name, coleenp@2497: Symbol* method_signature, duke@435: KlassHandle current_klass, duke@435: bool check_access) { duke@435: EXCEPTION_MARK; duke@435: methodHandle method_result; duke@435: linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodHandle(); duke@435: } else { duke@435: return method_result; duke@435: } duke@435: } duke@435: duke@435: methodHandle LinkResolver::resolve_virtual_call_or_null( duke@435: KlassHandle receiver_klass, duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* name, coleenp@2497: Symbol* signature, duke@435: KlassHandle current_klass) { duke@435: EXCEPTION_MARK; duke@435: CallInfo info; duke@435: resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodHandle(); duke@435: } duke@435: return info.selected_method(); duke@435: } duke@435: duke@435: methodHandle LinkResolver::resolve_interface_call_or_null( duke@435: KlassHandle receiver_klass, duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* name, coleenp@2497: Symbol* signature, duke@435: KlassHandle current_klass) { duke@435: EXCEPTION_MARK; duke@435: CallInfo info; duke@435: resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodHandle(); duke@435: } duke@435: return info.selected_method(); duke@435: } duke@435: duke@435: int LinkResolver::resolve_virtual_vtable_index( duke@435: KlassHandle receiver_klass, duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* name, coleenp@2497: Symbol* signature, duke@435: KlassHandle current_klass) { duke@435: EXCEPTION_MARK; duke@435: CallInfo info; duke@435: resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodOopDesc::invalid_vtable_index; duke@435: } duke@435: return info.vtable_index(); duke@435: } duke@435: duke@435: methodHandle LinkResolver::resolve_static_call_or_null( duke@435: KlassHandle resolved_klass, coleenp@2497: Symbol* name, coleenp@2497: Symbol* signature, duke@435: KlassHandle current_klass) { duke@435: EXCEPTION_MARK; duke@435: CallInfo info; duke@435: resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodHandle(); duke@435: } duke@435: return info.selected_method(); duke@435: } duke@435: coleenp@2497: methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, duke@435: KlassHandle current_klass) { duke@435: EXCEPTION_MARK; duke@435: CallInfo info; duke@435: resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); duke@435: if (HAS_PENDING_EXCEPTION) { duke@435: CLEAR_PENDING_EXCEPTION; duke@435: return methodHandle(); duke@435: } duke@435: return info.selected_method(); duke@435: } duke@435: duke@435: duke@435: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: // ConstantPool entries duke@435: duke@435: void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { duke@435: switch (byte) { duke@435: case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; duke@435: case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; duke@435: case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; twisti@3969: case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; jrose@1161: case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; duke@435: case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; duke@435: } duke@435: return; duke@435: } duke@435: coleenp@2497: void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, duke@435: KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { duke@435: // resolve klass duke@435: resolve_klass(resolved_klass, pool, index, CHECK); duke@435: duke@435: // Get name, signature, and static klass coleenp@2497: method_name = pool->name_ref_at(index); coleenp@2497: method_signature = pool->signature_ref_at(index); duke@435: current_klass = KlassHandle(THREAD, pool->pool_holder()); duke@435: } duke@435: duke@435: duke@435: void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { duke@435: KlassHandle resolved_klass; coleenp@2497: Symbol* method_name = NULL; coleenp@2497: Symbol* method_signature = NULL; duke@435: KlassHandle current_klass; duke@435: resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); duke@435: resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); duke@435: } duke@435: duke@435: duke@435: void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { duke@435: KlassHandle resolved_klass; coleenp@2497: Symbol* method_name = NULL; coleenp@2497: Symbol* method_signature = NULL; duke@435: KlassHandle current_klass; duke@435: resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); duke@435: resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); duke@435: } duke@435: duke@435: duke@435: void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, duke@435: constantPoolHandle pool, int index, duke@435: TRAPS) { duke@435: duke@435: KlassHandle resolved_klass; coleenp@2497: Symbol* method_name = NULL; coleenp@2497: Symbol* method_signature = NULL; duke@435: KlassHandle current_klass; duke@435: resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); duke@435: KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); duke@435: resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); duke@435: } duke@435: duke@435: duke@435: void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { duke@435: KlassHandle resolved_klass; coleenp@2497: Symbol* method_name = NULL; coleenp@2497: Symbol* method_signature = NULL; duke@435: KlassHandle current_klass; duke@435: resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); duke@435: KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); duke@435: resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); duke@435: } duke@435: jrose@1161: twisti@3969: void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { jrose@1161: assert(EnableInvokeDynamic, ""); twisti@3969: // This guy is reached from InterpreterRuntime::resolve_invokehandle. twisti@3969: KlassHandle resolved_klass; twisti@3969: Symbol* method_name = NULL; twisti@3969: Symbol* method_signature = NULL; twisti@3969: KlassHandle current_klass; twisti@3969: resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); twisti@3969: if (TraceMethodHandles) twisti@3969: tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); twisti@3969: resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); twisti@3969: } jrose@1161: twisti@3969: void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, twisti@3969: Symbol* method_name, Symbol* method_signature, twisti@3969: KlassHandle current_klass, twisti@3969: TRAPS) { twisti@3969: // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar twisti@3969: assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); twisti@3969: assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); twisti@3969: methodHandle resolved_method; twisti@3969: Handle resolved_appendix; twisti@3969: lookup_polymorphic_method(resolved_method, resolved_klass, twisti@3969: method_name, method_signature, twisti@3969: current_klass, &resolved_appendix, CHECK); twisti@3969: result.set_handle(resolved_method, resolved_appendix, CHECK); twisti@3969: } jrose@1161: jrose@1161: twisti@3969: void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { twisti@3969: assert(EnableInvokeDynamic, ""); twisti@3969: pool->set_invokedynamic(); // mark header to flag active call sites twisti@3969: twisti@3969: //resolve_pool(, method_name, method_signature, current_klass, pool, index, CHECK); twisti@3969: Symbol* method_name = pool->name_ref_at(index); twisti@3969: Symbol* method_signature = pool->signature_ref_at(index); twisti@3969: KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); twisti@3969: twisti@3969: // Resolve the bootstrap specifier (BSM + optional arguments). twisti@3969: Handle bootstrap_specifier; twisti@3969: // Check if CallSite has been bound already: twisti@3969: ConstantPoolCacheEntry* cpce = pool->cache()->secondary_entry_at(index); twisti@3969: if (cpce->is_f1_null()) { twisti@3969: int pool_index = pool->cache()->main_entry_at(index)->constant_pool_index(); twisti@3969: oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); twisti@3969: assert(bsm_info != NULL, ""); twisti@3969: // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. twisti@3969: bootstrap_specifier = Handle(THREAD, bsm_info); twisti@3969: } twisti@3969: if (!cpce->is_f1_null()) { twisti@3969: methodHandle method(THREAD, cpce->f2_as_vfinal_method()); twisti@3969: Handle appendix(THREAD, cpce->has_appendix() ? cpce->f1_appendix() : (oop)NULL); twisti@3969: result.set_handle(method, appendix, CHECK); twisti@3969: return; twisti@3969: } twisti@3969: twisti@3969: if (TraceMethodHandles) { twisti@3969: tty->print_cr("resolve_invokedynamic #%d %s %s", twisti@3969: constantPoolCacheOopDesc::decode_secondary_index(index), twisti@3969: method_name->as_C_string(), method_signature->as_C_string()); twisti@3969: tty->print(" BSM info: "); bootstrap_specifier->print(); twisti@3969: } twisti@3969: twisti@3969: resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); twisti@3969: } twisti@3969: twisti@3969: void LinkResolver::resolve_dynamic_call(CallInfo& result, twisti@3969: Handle bootstrap_specifier, twisti@3969: Symbol* method_name, Symbol* method_signature, twisti@3969: KlassHandle current_klass, twisti@3969: TRAPS) { twisti@3969: // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) twisti@3969: // The appendix argument is likely to be a freshly-created CallSite. twisti@3969: Handle resolved_appendix; twisti@3969: methodHandle resolved_method = twisti@3969: SystemDictionary::find_dynamic_call_site_invoker(current_klass, twisti@3969: bootstrap_specifier, twisti@3969: method_name, method_signature, twisti@3969: &resolved_appendix, twisti@3969: CHECK); jrose@2941: if (HAS_PENDING_EXCEPTION) { twisti@3969: if (TraceMethodHandles) { twisti@3969: tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, PENDING_EXCEPTION); twisti@3969: PENDING_EXCEPTION->print(); twisti@3969: } jrose@2941: if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { jrose@2941: // throw these guys, since they are already wrapped jrose@2941: return; jrose@2941: } jrose@2941: if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { jrose@2941: // intercept only LinkageErrors which might have failed to wrap jrose@2941: return; jrose@2941: } jrose@2941: // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. twisti@3969: Handle nested_exception(THREAD, PENDING_EXCEPTION); jrose@2941: CLEAR_PENDING_EXCEPTION; twisti@3969: THROW_MSG_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), twisti@3969: "BootstrapMethodError", nested_exception) jrose@2941: } twisti@3969: result.set_handle(resolved_method, resolved_appendix, CHECK); jrose@1161: } jrose@1161: duke@435: //------------------------------------------------------------------------------------------------------------------------ duke@435: #ifndef PRODUCT duke@435: duke@435: void FieldAccessInfo::print() { duke@435: ResourceMark rm; duke@435: tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); duke@435: } duke@435: duke@435: #endif