author | jrose |
Tue, 21 Apr 2009 23:21:04 -0700 | |
changeset 2570 | ecc7862946d4 |
parent 2534 | 08dac9ce0cd7 |
child 4429 | d7eb4e2099aa |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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#include "incls/_precompiled.incl" |
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#include "incls/_linkResolver.cpp.incl" |
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||
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//------------------------------------------------------------------------------------------------------------------------ |
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// Implementation of FieldAccessInfo |
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||
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void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset, |
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BasicType field_type, AccessFlags access_flags) { |
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_klass = klass; |
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_name = name; |
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_field_index = field_index; |
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_field_offset = field_offset; |
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_field_type = field_type; |
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_access_flags = access_flags; |
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} |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Implementation of CallInfo |
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void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { |
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int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { |
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// This is only called for interface methods. If the resolved_method |
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// comes from java/lang/Object, it can be the subject of a virtual call, so |
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// we should pick the vtable index from the resolved method. |
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// Other than that case, there is no valid vtable index to specify. |
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int vtable_index = methodOopDesc::invalid_vtable_index; |
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if (resolved_method->method_holder() == SystemDictionary::object_klass()) { |
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assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
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vtable_index = resolved_method->vtable_index(); |
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} |
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set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
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assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); |
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set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
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} |
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void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
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assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
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_resolved_klass = resolved_klass; |
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_selected_klass = selected_klass; |
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_resolved_method = resolved_method; |
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_selected_method = selected_method; |
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_vtable_index = vtable_index; |
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if (CompilationPolicy::mustBeCompiled(selected_method)) { |
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// Note: with several active threads, the mustBeCompiled may be true |
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// while canBeCompiled is false; remove assert |
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// assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile"); |
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if (THREAD->is_Compiler_thread()) { |
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// don't force compilation, resolve was on behalf of compiler |
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return; |
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} |
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CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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methodHandle(), 0, "mustBeCompiled", CHECK); |
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} |
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} |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Klass resolution |
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void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { |
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if (!Reflection::verify_class_access(ref_klass->as_klassOop(), |
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sel_klass->as_klassOop(), |
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true)) { |
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ResourceMark rm(THREAD); |
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Exceptions::fthrow( |
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THREAD_AND_LOCATION, |
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vmSymbolHandles::java_lang_IllegalAccessError(), |
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"tried to access class %s from class %s", |
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sel_klass->external_name(), |
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ref_klass->external_name() |
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); |
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return; |
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} |
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} |
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void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { |
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klassOop result_oop = pool->klass_ref_at(index, CHECK); |
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result = KlassHandle(THREAD, result_oop); |
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} |
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void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { |
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klassOop result_oop = |
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constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); |
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result = KlassHandle(THREAD, result_oop); |
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} |
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//------------------------------------------------------------------------------------------------------------------------ |
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// Method resolution |
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// |
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// According to JVM spec. $5.4.3c & $5.4.3d |
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void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
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methodOop result_oop = klass->uncached_lookup_method(name(), signature()); |
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result = methodHandle(THREAD, result_oop); |
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} |
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// returns first instance method |
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void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
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methodOop result_oop = klass->uncached_lookup_method(name(), signature()); |
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result = methodHandle(THREAD, result_oop); |
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while (!result.is_null() && result->is_static()) { |
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klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); |
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result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); |
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} |
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} |
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int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
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ResourceMark rm(THREAD); |
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klassVtable *vt = instanceKlass::cast(klass())->vtable(); |
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return vt->index_of_miranda(name(), signature()); |
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} |
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void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
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instanceKlass *ik = instanceKlass::cast(klass()); |
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result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); |
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} |
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void LinkResolver::lookup_implicit_method(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
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if (EnableMethodHandles && MethodHandles::enabled() && |
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name == vmSymbolHandles::invoke_name() && klass() == SystemDictionary::MethodHandle_klass()) { |
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methodOop result_oop = SystemDictionary::find_method_handle_invoke(signature, |
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Handle(), |
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Handle(), |
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CHECK); |
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if (result_oop != NULL) { |
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assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); |
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result = methodHandle(THREAD, result_oop); |
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} |
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} |
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} |
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void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
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KlassHandle resolved_klass, |
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KlassHandle sel_klass, |
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methodHandle sel_method, |
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TRAPS) { |
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AccessFlags flags = sel_method->access_flags(); |
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// Special case: arrays always override "clone". JVMS 2.15. |
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// If the resolved klass is an array class, and the declaring class |
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// is java.lang.Object and the method is "clone", set the flags |
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// to public. |
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// |
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// We'll check for the method name first, as that's most likely |
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// to be false (so we'll short-circuit out of these tests). |
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if (sel_method->name() == vmSymbols::clone_name() && |
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sel_klass() == SystemDictionary::object_klass() && |
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resolved_klass->oop_is_array()) { |
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// We need to change "protected" to "public". |
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assert(flags.is_protected(), "clone not protected?"); |
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jint new_flags = flags.as_int(); |
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new_flags = new_flags & (~JVM_ACC_PROTECTED); |
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new_flags = new_flags | JVM_ACC_PUBLIC; |
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flags.set_flags(new_flags); |
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} |
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if (!Reflection::verify_field_access(ref_klass->as_klassOop(), |
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resolved_klass->as_klassOop(), |
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sel_klass->as_klassOop(), |
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flags, |
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true)) { |
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ResourceMark rm(THREAD); |
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Exceptions::fthrow( |
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THREAD_AND_LOCATION, |
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vmSymbolHandles::java_lang_IllegalAccessError(), |
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"tried to access method %s.%s%s from class %s", |
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sel_klass->external_name(), |
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sel_method->name()->as_C_string(), |
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sel_method->signature()->as_C_string(), |
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ref_klass->external_name() |
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); |
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return; |
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} |
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} |
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void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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constantPoolHandle pool, int index, TRAPS) { |
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216 |
// resolve klass |
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resolve_klass(resolved_klass, pool, index, CHECK); |
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symbolHandle method_name (THREAD, pool->name_ref_at(index)); |
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symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); |
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KlassHandle current_klass(THREAD, pool->pool_holder()); |
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resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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} |
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void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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// resolve klass |
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resolve_klass(resolved_klass, pool, index, CHECK); |
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symbolHandle method_name (THREAD, pool->name_ref_at(index)); |
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symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); |
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KlassHandle current_klass(THREAD, pool->pool_holder()); |
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resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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} |
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void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
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symbolHandle method_name, symbolHandle method_signature, |
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KlassHandle current_klass, bool check_access, TRAPS) { |
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242 |
// 1. check if klass is not interface |
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if (resolved_klass->is_interface()) { |
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char buf[200]; |
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jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); |
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THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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} |
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// 2. lookup method in resolved klass and its super klasses |
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lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
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252 |
if (resolved_method.is_null()) { // not found in the class hierarchy |
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// 3. lookup method in all the interfaces implemented by the resolved klass |
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lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
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256 |
if (resolved_method.is_null()) { |
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2534 | 257 |
// JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
258 |
lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
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} |
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260 |
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261 |
if (resolved_method.is_null()) { |
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// 4. method lookup failed |
263 |
ResourceMark rm(THREAD); |
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THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), |
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methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
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method_name(), |
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method_signature())); |
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} |
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} |
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270 |
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271 |
// 5. check if method is concrete |
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272 |
if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { |
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ResourceMark rm(THREAD); |
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THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
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methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
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method_name(), |
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method_signature())); |
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} |
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279 |
||
280 |
// 6. access checks, access checking may be turned off when calling from within the VM. |
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281 |
if (check_access) { |
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282 |
assert(current_klass.not_null() , "current_klass should not be null"); |
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283 |
||
284 |
// check if method can be accessed by the referring class |
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285 |
check_method_accessability(current_klass, |
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286 |
resolved_klass, |
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287 |
KlassHandle(THREAD, resolved_method->method_holder()), |
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288 |
resolved_method, |
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CHECK); |
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290 |
||
291 |
// check loader constraints |
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292 |
Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); |
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293 |
Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); |
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294 |
{ |
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295 |
ResourceMark rm(THREAD); |
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296 |
char* failed_type_name = |
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297 |
SystemDictionary::check_signature_loaders(method_signature, loader, |
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298 |
class_loader, true, CHECK); |
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299 |
if (failed_type_name != NULL) { |
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300 |
const char* msg = "loader constraint violation: when resolving method" |
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301 |
" \"%s\" the class loader (instance of %s) of the current class, %s," |
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302 |
" and the class loader (instance of %s) for resolved class, %s, have" |
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303 |
" different Class objects for the type %s used in the signature"; |
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304 |
char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); |
|
305 |
const char* loader1 = SystemDictionary::loader_name(loader()); |
|
306 |
char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); |
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307 |
const char* loader2 = SystemDictionary::loader_name(class_loader()); |
|
308 |
char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); |
|
309 |
size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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310 |
strlen(current) + strlen(loader2) + strlen(resolved) + |
|
311 |
strlen(failed_type_name); |
|
312 |
char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
|
313 |
jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, |
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314 |
resolved, failed_type_name); |
|
315 |
THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
|
316 |
} |
|
317 |
} |
|
318 |
} |
|
319 |
} |
|
320 |
||
321 |
void LinkResolver::resolve_interface_method(methodHandle& resolved_method, |
|
322 |
KlassHandle resolved_klass, |
|
323 |
symbolHandle method_name, |
|
324 |
symbolHandle method_signature, |
|
325 |
KlassHandle current_klass, |
|
326 |
bool check_access, TRAPS) { |
|
327 |
||
328 |
// check if klass is interface |
|
329 |
if (!resolved_klass->is_interface()) { |
|
330 |
char buf[200]; |
|
331 |
jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); |
|
332 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
333 |
} |
|
334 |
||
335 |
// lookup method in this interface or its super, java.lang.Object |
|
336 |
lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
|
337 |
||
338 |
if (resolved_method.is_null()) { |
|
339 |
// lookup method in all the super-interfaces |
|
340 |
lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
|
341 |
if (resolved_method.is_null()) { |
|
342 |
// no method found |
|
343 |
ResourceMark rm(THREAD); |
|
344 |
THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), |
|
345 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
346 |
method_name(), |
|
347 |
method_signature())); |
|
348 |
} |
|
349 |
} |
|
350 |
||
351 |
if (check_access) { |
|
352 |
HandleMark hm(THREAD); |
|
353 |
Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); |
|
354 |
Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); |
|
355 |
{ |
|
356 |
ResourceMark rm(THREAD); |
|
357 |
char* failed_type_name = |
|
358 |
SystemDictionary::check_signature_loaders(method_signature, loader, |
|
359 |
class_loader, true, CHECK); |
|
360 |
if (failed_type_name != NULL) { |
|
361 |
const char* msg = "loader constraint violation: when resolving " |
|
362 |
"interface method \"%s\" the class loader (instance of %s) of the " |
|
363 |
"current class, %s, and the class loader (instance of %s) for " |
|
364 |
"resolved class, %s, have different Class objects for the type %s " |
|
365 |
"used in the signature"; |
|
366 |
char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); |
|
367 |
const char* loader1 = SystemDictionary::loader_name(loader()); |
|
368 |
char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); |
|
369 |
const char* loader2 = SystemDictionary::loader_name(class_loader()); |
|
370 |
char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); |
|
371 |
size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
|
372 |
strlen(current) + strlen(loader2) + strlen(resolved) + |
|
373 |
strlen(failed_type_name); |
|
374 |
char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
|
375 |
jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, |
|
376 |
resolved, failed_type_name); |
|
377 |
THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
|
378 |
} |
|
379 |
} |
|
380 |
} |
|
381 |
} |
|
382 |
||
383 |
//------------------------------------------------------------------------------------------------------------------------ |
|
384 |
// Field resolution |
|
385 |
||
386 |
void LinkResolver::check_field_accessability(KlassHandle ref_klass, |
|
387 |
KlassHandle resolved_klass, |
|
388 |
KlassHandle sel_klass, |
|
389 |
fieldDescriptor& fd, |
|
390 |
TRAPS) { |
|
391 |
if (!Reflection::verify_field_access(ref_klass->as_klassOop(), |
|
392 |
resolved_klass->as_klassOop(), |
|
393 |
sel_klass->as_klassOop(), |
|
394 |
fd.access_flags(), |
|
395 |
true)) { |
|
396 |
ResourceMark rm(THREAD); |
|
397 |
Exceptions::fthrow( |
|
398 |
THREAD_AND_LOCATION, |
|
399 |
vmSymbolHandles::java_lang_IllegalAccessError(), |
|
400 |
"tried to access field %s.%s from class %s", |
|
401 |
sel_klass->external_name(), |
|
402 |
fd.name()->as_C_string(), |
|
403 |
ref_klass->external_name() |
|
404 |
); |
|
405 |
return; |
|
406 |
} |
|
407 |
} |
|
408 |
||
409 |
void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { |
|
410 |
resolve_field(result, pool, index, byte, check_only, true, CHECK); |
|
411 |
} |
|
412 |
||
413 |
void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { |
|
414 |
assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
|
415 |
byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); |
|
416 |
||
417 |
bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); |
|
418 |
bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); |
|
419 |
||
420 |
// resolve specified klass |
|
421 |
KlassHandle resolved_klass; |
|
422 |
if (update_pool) { |
|
423 |
resolve_klass(resolved_klass, pool, index, CHECK); |
|
424 |
} else { |
|
425 |
resolve_klass_no_update(resolved_klass, pool, index, CHECK); |
|
426 |
} |
|
427 |
// Load these early in case the resolve of the containing klass fails |
|
428 |
symbolOop field = pool->name_ref_at(index); |
|
429 |
symbolHandle field_h (THREAD, field); // preserve in case we need the name |
|
430 |
symbolOop sig = pool->signature_ref_at(index); |
|
431 |
// Check if there's a resolved klass containing the field |
|
432 |
if( resolved_klass.is_null() ) { |
|
433 |
ResourceMark rm(THREAD); |
|
434 |
THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); |
|
435 |
} |
|
436 |
||
437 |
// Resolve instance field |
|
438 |
fieldDescriptor fd; // find_field initializes fd if found |
|
439 |
KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
|
440 |
// check if field exists; i.e., if a klass containing the field def has been selected |
|
441 |
if (sel_klass.is_null()){ |
|
442 |
ResourceMark rm(THREAD); |
|
443 |
THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); |
|
444 |
} |
|
445 |
||
446 |
// check access |
|
447 |
KlassHandle ref_klass(THREAD, pool->pool_holder()); |
|
448 |
check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); |
|
449 |
||
450 |
// check for errors |
|
451 |
if (is_static != fd.is_static()) { |
|
452 |
char msg[200]; |
|
453 |
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()); |
|
454 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
|
455 |
} |
|
456 |
||
457 |
// Final fields can only be accessed from its own class. |
|
458 |
if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { |
|
459 |
THROW(vmSymbols::java_lang_IllegalAccessError()); |
|
460 |
} |
|
461 |
||
462 |
// initialize resolved_klass if necessary |
|
463 |
// note 1: the klass which declared the field must be initialized (i.e, sel_klass) |
|
464 |
// according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) |
|
465 |
// |
|
466 |
// note 2: we don't want to force initialization if we are just checking |
|
467 |
// if the field access is legal; e.g., during compilation |
|
468 |
if (is_static && !check_only) { |
|
469 |
sel_klass->initialize(CHECK); |
|
470 |
} |
|
471 |
||
472 |
{ |
|
473 |
HandleMark hm(THREAD); |
|
474 |
Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); |
|
475 |
Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); |
|
476 |
symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); |
|
477 |
{ |
|
478 |
ResourceMark rm(THREAD); |
|
479 |
char* failed_type_name = |
|
480 |
SystemDictionary::check_signature_loaders(signature_ref, |
|
481 |
ref_loader, sel_loader, |
|
482 |
false, |
|
483 |
CHECK); |
|
484 |
if (failed_type_name != NULL) { |
|
485 |
const char* msg = "loader constraint violation: when resolving field" |
|
486 |
" \"%s\" the class loader (instance of %s) of the referring class, " |
|
487 |
"%s, and the class loader (instance of %s) for the field's resolved " |
|
488 |
"type, %s, have different Class objects for that type"; |
|
489 |
char* field_name = field_h()->as_C_string(); |
|
490 |
const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
|
491 |
char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); |
|
492 |
const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
|
493 |
size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
|
494 |
strlen(sel) + strlen(loader2) + strlen(failed_type_name); |
|
495 |
char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
|
496 |
jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, |
|
497 |
failed_type_name); |
|
498 |
THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
|
499 |
} |
|
500 |
} |
|
501 |
} |
|
502 |
||
503 |
// return information. note that the klass is set to the actual klass containing the |
|
504 |
// field, otherwise access of static fields in superclasses will not work. |
|
505 |
KlassHandle holder (THREAD, fd.field_holder()); |
|
506 |
symbolHandle name (THREAD, fd.name()); |
|
507 |
result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
|
508 |
} |
|
509 |
||
510 |
||
511 |
//------------------------------------------------------------------------------------------------------------------------ |
|
512 |
// Invoke resolution |
|
513 |
// |
|
514 |
// Naming conventions: |
|
515 |
// |
|
516 |
// resolved_method the specified method (i.e., static receiver specified via constant pool index) |
|
517 |
// sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) |
|
518 |
// resolved_klass the specified klass (i.e., specified via constant pool index) |
|
519 |
// recv_klass the receiver klass |
|
520 |
||
521 |
||
522 |
void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, |
|
523 |
symbolHandle method_signature, KlassHandle current_klass, |
|
524 |
bool check_access, bool initialize_class, TRAPS) { |
|
525 |
methodHandle resolved_method; |
|
526 |
linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
527 |
resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); |
|
528 |
||
529 |
// Initialize klass (this should only happen if everything is ok) |
|
530 |
if (initialize_class && resolved_klass->should_be_initialized()) { |
|
531 |
resolved_klass->initialize(CHECK); |
|
532 |
linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
533 |
} |
|
534 |
||
535 |
// setup result |
|
536 |
result.set_static(resolved_klass, resolved_method, CHECK); |
|
537 |
} |
|
538 |
||
539 |
// throws linktime exceptions |
|
540 |
void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
|
541 |
symbolHandle method_name, symbolHandle method_signature, |
|
542 |
KlassHandle current_klass, bool check_access, TRAPS) { |
|
543 |
||
544 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
545 |
assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
|
546 |
||
547 |
// check if static |
|
548 |
if (!resolved_method->is_static()) { |
|
549 |
char buf[200]; |
|
550 |
jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
551 |
resolved_method->name(), |
|
552 |
resolved_method->signature())); |
|
553 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
554 |
} |
|
555 |
} |
|
556 |
||
557 |
||
558 |
void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, |
|
559 |
symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
|
560 |
methodHandle resolved_method; |
|
561 |
linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
562 |
runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); |
|
563 |
} |
|
564 |
||
565 |
// throws linktime exceptions |
|
566 |
void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, |
|
567 |
symbolHandle method_name, symbolHandle method_signature, |
|
568 |
KlassHandle current_klass, bool check_access, TRAPS) { |
|
569 |
||
570 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
571 |
||
572 |
// check if method name is <init>, that it is found in same klass as static type |
|
573 |
if (resolved_method->name() == vmSymbols::object_initializer_name() && |
|
574 |
resolved_method->method_holder() != resolved_klass()) { |
|
575 |
ResourceMark rm(THREAD); |
|
576 |
Exceptions::fthrow( |
|
577 |
THREAD_AND_LOCATION, |
|
578 |
vmSymbolHandles::java_lang_NoSuchMethodError(), |
|
579 |
"%s: method %s%s not found", |
|
580 |
resolved_klass->external_name(), |
|
581 |
resolved_method->name()->as_C_string(), |
|
582 |
resolved_method->signature()->as_C_string() |
|
583 |
); |
|
584 |
return; |
|
585 |
} |
|
586 |
||
587 |
// check if not static |
|
588 |
if (resolved_method->is_static()) { |
|
589 |
char buf[200]; |
|
590 |
jio_snprintf(buf, sizeof(buf), |
|
591 |
"Expecting non-static method %s", |
|
592 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
593 |
resolved_method->name(), |
|
594 |
resolved_method->signature())); |
|
595 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
596 |
} |
|
597 |
} |
|
598 |
||
599 |
// throws runtime exceptions |
|
600 |
void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, |
|
601 |
KlassHandle current_klass, bool check_access, TRAPS) { |
|
602 |
||
603 |
// resolved method is selected method unless we have an old-style lookup |
|
604 |
methodHandle sel_method(THREAD, resolved_method()); |
|
605 |
||
606 |
// check if this is an old-style super call and do a new lookup if so |
|
607 |
{ KlassHandle method_klass = KlassHandle(THREAD, |
|
608 |
resolved_method->method_holder()); |
|
609 |
||
610 |
if (check_access && |
|
611 |
// a) check if ACC_SUPER flag is set for the current class |
|
612 |
current_klass->is_super() && |
|
613 |
// b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) |
|
614 |
current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && |
|
615 |
// c) check if the method is not <init> |
|
616 |
resolved_method->name() != vmSymbols::object_initializer_name()) { |
|
617 |
// Lookup super method |
|
618 |
KlassHandle super_klass(THREAD, current_klass->super()); |
|
619 |
lookup_instance_method_in_klasses(sel_method, super_klass, |
|
620 |
symbolHandle(THREAD, resolved_method->name()), |
|
621 |
symbolHandle(THREAD, resolved_method->signature()), CHECK); |
|
622 |
// check if found |
|
623 |
if (sel_method.is_null()) { |
|
624 |
ResourceMark rm(THREAD); |
|
625 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
626 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
627 |
resolved_method->name(), |
|
628 |
resolved_method->signature())); |
|
629 |
} |
|
630 |
} |
|
631 |
} |
|
632 |
||
633 |
// check if not static |
|
634 |
if (sel_method->is_static()) { |
|
635 |
char buf[200]; |
|
636 |
jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
637 |
resolved_method->name(), |
|
638 |
resolved_method->signature())); |
|
639 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
640 |
} |
|
641 |
||
642 |
// check if abstract |
|
643 |
if (sel_method->is_abstract()) { |
|
644 |
ResourceMark rm(THREAD); |
|
645 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
646 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
647 |
sel_method->name(), |
|
648 |
sel_method->signature())); |
|
649 |
} |
|
650 |
||
651 |
// setup result |
|
652 |
result.set_static(resolved_klass, sel_method, CHECK); |
|
653 |
} |
|
654 |
||
655 |
void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, |
|
656 |
symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, |
|
657 |
bool check_access, bool check_null_and_abstract, TRAPS) { |
|
658 |
methodHandle resolved_method; |
|
659 |
linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
660 |
runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); |
|
661 |
} |
|
662 |
||
663 |
// throws linktime exceptions |
|
664 |
void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, |
|
665 |
symbolHandle method_name, symbolHandle method_signature, |
|
666 |
KlassHandle current_klass, bool check_access, TRAPS) { |
|
667 |
// normal method resolution |
|
668 |
resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
669 |
||
670 |
assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); |
|
671 |
assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); |
|
672 |
||
673 |
// check if not static |
|
674 |
if (resolved_method->is_static()) { |
|
675 |
char buf[200]; |
|
676 |
jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
677 |
resolved_method->name(), |
|
678 |
resolved_method->signature())); |
|
679 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
680 |
} |
|
681 |
} |
|
682 |
||
683 |
// throws runtime exceptions |
|
684 |
void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, |
|
685 |
methodHandle resolved_method, |
|
686 |
KlassHandle resolved_klass, |
|
687 |
Handle recv, |
|
688 |
KlassHandle recv_klass, |
|
689 |
bool check_null_and_abstract, |
|
690 |
TRAPS) { |
|
691 |
||
692 |
// setup default return values |
|
693 |
int vtable_index = methodOopDesc::invalid_vtable_index; |
|
694 |
methodHandle selected_method; |
|
695 |
||
696 |
assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); |
|
697 |
||
698 |
// runtime method resolution |
|
699 |
if (check_null_and_abstract && recv.is_null()) { // check if receiver exists |
|
700 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
701 |
} |
|
702 |
||
703 |
// Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's |
|
704 |
// has not been rewritten, and the vtable initialized. |
|
705 |
assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); |
|
706 |
||
707 |
// Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's |
|
708 |
// has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
|
709 |
// a missing receiver might result in a bogus lookup. |
|
710 |
assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); |
|
711 |
||
712 |
// do lookup based on receiver klass using the vtable index |
|
713 |
if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method |
|
714 |
vtable_index = vtable_index_of_miranda_method(resolved_klass, |
|
715 |
symbolHandle(THREAD, resolved_method->name()), |
|
716 |
symbolHandle(THREAD, resolved_method->signature()), CHECK); |
|
717 |
assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
|
718 |
||
719 |
instanceKlass* inst = instanceKlass::cast(recv_klass()); |
|
720 |
selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
|
721 |
} else { |
|
722 |
// at this point we are sure that resolved_method is virtual and not |
|
723 |
// a miranda method; therefore, it must have a valid vtable index. |
|
724 |
vtable_index = resolved_method->vtable_index(); |
|
725 |
// We could get a negative vtable_index for final methods, |
|
726 |
// because as an optimization they are they are never put in the vtable, |
|
727 |
// unless they override an existing method. |
|
728 |
// If we do get a negative, it means the resolved method is the the selected |
|
729 |
// method, and it can never be changed by an override. |
|
730 |
if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { |
|
731 |
assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
|
732 |
selected_method = resolved_method; |
|
733 |
} else { |
|
734 |
// recv_klass might be an arrayKlassOop but all vtables start at |
|
735 |
// the same place. The cast is to avoid virtual call and assertion. |
|
736 |
instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); |
|
737 |
selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
|
738 |
} |
|
739 |
} |
|
740 |
||
741 |
// check if method exists |
|
742 |
if (selected_method.is_null()) { |
|
743 |
ResourceMark rm(THREAD); |
|
744 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
745 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
746 |
resolved_method->name(), |
|
747 |
resolved_method->signature())); |
|
748 |
} |
|
749 |
||
750 |
// check if abstract |
|
751 |
if (check_null_and_abstract && selected_method->is_abstract()) { |
|
752 |
ResourceMark rm(THREAD); |
|
753 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
754 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
|
755 |
selected_method->name(), |
|
756 |
selected_method->signature())); |
|
757 |
} |
|
758 |
||
759 |
// setup result |
|
760 |
result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); |
|
761 |
} |
|
762 |
||
763 |
void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, |
|
764 |
symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, |
|
765 |
bool check_access, bool check_null_and_abstract, TRAPS) { |
|
766 |
methodHandle resolved_method; |
|
767 |
linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
768 |
runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); |
|
769 |
} |
|
770 |
||
771 |
// throws linktime exceptions |
|
772 |
void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, |
|
773 |
symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
|
774 |
// normal interface method resolution |
|
775 |
resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); |
|
776 |
||
777 |
assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); |
|
778 |
assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); |
|
779 |
} |
|
780 |
||
781 |
// throws runtime exceptions |
|
782 |
void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, |
|
783 |
Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { |
|
784 |
// check if receiver exists |
|
785 |
if (check_null_and_abstract && recv.is_null()) { |
|
786 |
THROW(vmSymbols::java_lang_NullPointerException()); |
|
787 |
} |
|
788 |
||
789 |
// check if receiver klass implements the resolved interface |
|
790 |
if (!recv_klass->is_subtype_of(resolved_klass())) { |
|
791 |
char buf[200]; |
|
792 |
jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", |
|
793 |
(Klass::cast(recv_klass()))->external_name(), |
|
794 |
(Klass::cast(resolved_klass()))->external_name()); |
|
795 |
THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
|
796 |
} |
|
797 |
// do lookup based on receiver klass |
|
798 |
methodHandle sel_method; |
|
799 |
lookup_instance_method_in_klasses(sel_method, recv_klass, |
|
800 |
symbolHandle(THREAD, resolved_method->name()), |
|
801 |
symbolHandle(THREAD, resolved_method->signature()), CHECK); |
|
802 |
// check if method exists |
|
803 |
if (sel_method.is_null()) { |
|
804 |
ResourceMark rm(THREAD); |
|
805 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
806 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
|
807 |
resolved_method->name(), |
|
808 |
resolved_method->signature())); |
|
809 |
} |
|
810 |
// check if public |
|
811 |
if (!sel_method->is_public()) { |
|
812 |
ResourceMark rm(THREAD); |
|
813 |
THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
|
814 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
|
815 |
sel_method->name(), |
|
816 |
sel_method->signature())); |
|
817 |
} |
|
818 |
// check if abstract |
|
819 |
if (check_null_and_abstract && sel_method->is_abstract()) { |
|
820 |
ResourceMark rm(THREAD); |
|
821 |
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), |
|
822 |
methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
|
823 |
sel_method->name(), |
|
824 |
sel_method->signature())); |
|
825 |
} |
|
826 |
// setup result |
|
827 |
result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); |
|
828 |
} |
|
829 |
||
830 |
||
831 |
methodHandle LinkResolver::linktime_resolve_interface_method_or_null( |
|
832 |
KlassHandle resolved_klass, |
|
833 |
symbolHandle method_name, |
|
834 |
symbolHandle method_signature, |
|
835 |
KlassHandle current_klass, |
|
836 |
bool check_access) { |
|
837 |
EXCEPTION_MARK; |
|
838 |
methodHandle method_result; |
|
839 |
linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); |
|
840 |
if (HAS_PENDING_EXCEPTION) { |
|
841 |
CLEAR_PENDING_EXCEPTION; |
|
842 |
return methodHandle(); |
|
843 |
} else { |
|
844 |
return method_result; |
|
845 |
} |
|
846 |
} |
|
847 |
||
848 |
methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( |
|
849 |
KlassHandle resolved_klass, |
|
850 |
symbolHandle method_name, |
|
851 |
symbolHandle method_signature, |
|
852 |
KlassHandle current_klass, |
|
853 |
bool check_access) { |
|
854 |
EXCEPTION_MARK; |
|
855 |
methodHandle method_result; |
|
856 |
linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); |
|
857 |
if (HAS_PENDING_EXCEPTION) { |
|
858 |
CLEAR_PENDING_EXCEPTION; |
|
859 |
return methodHandle(); |
|
860 |
} else { |
|
861 |
return method_result; |
|
862 |
} |
|
863 |
} |
|
864 |
||
865 |
methodHandle LinkResolver::resolve_virtual_call_or_null( |
|
866 |
KlassHandle receiver_klass, |
|
867 |
KlassHandle resolved_klass, |
|
868 |
symbolHandle name, |
|
869 |
symbolHandle signature, |
|
870 |
KlassHandle current_klass) { |
|
871 |
EXCEPTION_MARK; |
|
872 |
CallInfo info; |
|
873 |
resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
874 |
if (HAS_PENDING_EXCEPTION) { |
|
875 |
CLEAR_PENDING_EXCEPTION; |
|
876 |
return methodHandle(); |
|
877 |
} |
|
878 |
return info.selected_method(); |
|
879 |
} |
|
880 |
||
881 |
methodHandle LinkResolver::resolve_interface_call_or_null( |
|
882 |
KlassHandle receiver_klass, |
|
883 |
KlassHandle resolved_klass, |
|
884 |
symbolHandle name, |
|
885 |
symbolHandle signature, |
|
886 |
KlassHandle current_klass) { |
|
887 |
EXCEPTION_MARK; |
|
888 |
CallInfo info; |
|
889 |
resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
890 |
if (HAS_PENDING_EXCEPTION) { |
|
891 |
CLEAR_PENDING_EXCEPTION; |
|
892 |
return methodHandle(); |
|
893 |
} |
|
894 |
return info.selected_method(); |
|
895 |
} |
|
896 |
||
897 |
int LinkResolver::resolve_virtual_vtable_index( |
|
898 |
KlassHandle receiver_klass, |
|
899 |
KlassHandle resolved_klass, |
|
900 |
symbolHandle name, |
|
901 |
symbolHandle signature, |
|
902 |
KlassHandle current_klass) { |
|
903 |
EXCEPTION_MARK; |
|
904 |
CallInfo info; |
|
905 |
resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
906 |
if (HAS_PENDING_EXCEPTION) { |
|
907 |
CLEAR_PENDING_EXCEPTION; |
|
908 |
return methodOopDesc::invalid_vtable_index; |
|
909 |
} |
|
910 |
return info.vtable_index(); |
|
911 |
} |
|
912 |
||
913 |
methodHandle LinkResolver::resolve_static_call_or_null( |
|
914 |
KlassHandle resolved_klass, |
|
915 |
symbolHandle name, |
|
916 |
symbolHandle signature, |
|
917 |
KlassHandle current_klass) { |
|
918 |
EXCEPTION_MARK; |
|
919 |
CallInfo info; |
|
920 |
resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); |
|
921 |
if (HAS_PENDING_EXCEPTION) { |
|
922 |
CLEAR_PENDING_EXCEPTION; |
|
923 |
return methodHandle(); |
|
924 |
} |
|
925 |
return info.selected_method(); |
|
926 |
} |
|
927 |
||
928 |
methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, |
|
929 |
KlassHandle current_klass) { |
|
930 |
EXCEPTION_MARK; |
|
931 |
CallInfo info; |
|
932 |
resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); |
|
933 |
if (HAS_PENDING_EXCEPTION) { |
|
934 |
CLEAR_PENDING_EXCEPTION; |
|
935 |
return methodHandle(); |
|
936 |
} |
|
937 |
return info.selected_method(); |
|
938 |
} |
|
939 |
||
940 |
||
941 |
||
942 |
//------------------------------------------------------------------------------------------------------------------------ |
|
943 |
// ConstantPool entries |
|
944 |
||
945 |
void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
|
946 |
switch (byte) { |
|
947 |
case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; |
|
948 |
case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; |
|
949 |
case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; |
|
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
950 |
case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
1 | 951 |
case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
952 |
} |
|
953 |
return; |
|
954 |
} |
|
955 |
||
956 |
void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, |
|
957 |
KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
|
958 |
// resolve klass |
|
959 |
resolve_klass(resolved_klass, pool, index, CHECK); |
|
960 |
||
961 |
// Get name, signature, and static klass |
|
962 |
method_name = symbolHandle(THREAD, pool->name_ref_at(index)); |
|
963 |
method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); |
|
964 |
current_klass = KlassHandle(THREAD, pool->pool_holder()); |
|
965 |
} |
|
966 |
||
967 |
||
968 |
void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
|
969 |
KlassHandle resolved_klass; |
|
970 |
symbolHandle method_name; |
|
971 |
symbolHandle method_signature; |
|
972 |
KlassHandle current_klass; |
|
973 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
974 |
resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
|
975 |
} |
|
976 |
||
977 |
||
978 |
void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
|
979 |
KlassHandle resolved_klass; |
|
980 |
symbolHandle method_name; |
|
981 |
symbolHandle method_signature; |
|
982 |
KlassHandle current_klass; |
|
983 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
984 |
resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
|
985 |
} |
|
986 |
||
987 |
||
988 |
void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, |
|
989 |
constantPoolHandle pool, int index, |
|
990 |
TRAPS) { |
|
991 |
||
992 |
KlassHandle resolved_klass; |
|
993 |
symbolHandle method_name; |
|
994 |
symbolHandle method_signature; |
|
995 |
KlassHandle current_klass; |
|
996 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
997 |
KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); |
|
998 |
resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
|
999 |
} |
|
1000 |
||
1001 |
||
1002 |
void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { |
|
1003 |
KlassHandle resolved_klass; |
|
1004 |
symbolHandle method_name; |
|
1005 |
symbolHandle method_signature; |
|
1006 |
KlassHandle current_klass; |
|
1007 |
resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
|
1008 |
KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); |
|
1009 |
resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
|
1010 |
} |
|
1011 |
||
2570
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1012 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1013 |
void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1014 |
assert(EnableInvokeDynamic, ""); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1015 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1016 |
// This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1017 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1018 |
assert(constantPoolCacheOopDesc::is_secondary_index(raw_index), "must be secondary index"); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1019 |
int nt_index = pool->map_instruction_operand_to_index(raw_index); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1020 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1021 |
// At this point, we only need the signature, and can ignore the name. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1022 |
symbolHandle method_signature(THREAD, pool->nt_signature_ref_at(nt_index)); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1023 |
symbolHandle method_name = vmSymbolHandles::invoke_name(); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1024 |
KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1025 |
|
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1026 |
// JSR 292: this must be an implicitly generated method MethodHandle.invoke(*...) |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1027 |
// The extra MH receiver will be inserted into the stack on every call. |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1028 |
methodHandle resolved_method; |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1029 |
lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1030 |
if (resolved_method.is_null()) { |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1031 |
THROW(vmSymbols::java_lang_InternalError()); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1032 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1033 |
result.set_virtual(resolved_klass, KlassHandle(), resolved_method, resolved_method, resolved_method->vtable_index(), CHECK); |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1034 |
} |
ecc7862946d4
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
2534
diff
changeset
|
1035 |
|
1 | 1036 |
//------------------------------------------------------------------------------------------------------------------------ |
1037 |
#ifndef PRODUCT |
|
1038 |
||
1039 |
void FieldAccessInfo::print() { |
|
1040 |
ResourceMark rm; |
|
1041 |
tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); |
|
1042 |
} |
|
1043 |
||
1044 |
#endif |