--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/interpreter/linkResolver.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,1747 @@
+/*
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/defaultMethods.hpp"
+#include "classfile/javaClasses.hpp"
+#include "classfile/symbolTable.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "compiler/compileBroker.hpp"
+#include "gc/shared/collectedHeap.inline.hpp"
+#include "interpreter/bytecode.hpp"
+#include "interpreter/interpreterRuntime.hpp"
+#include "interpreter/linkResolver.hpp"
+#include "logging/log.hpp"
+#include "logging/logStream.hpp"
+#include "memory/resourceArea.hpp"
+#include "memory/universe.inline.hpp"
+#include "oops/instanceKlass.hpp"
+#include "oops/method.hpp"
+#include "oops/objArrayOop.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvm.h"
+#include "prims/methodHandles.hpp"
+#include "prims/nativeLookup.hpp"
+#include "runtime/compilationPolicy.hpp"
+#include "runtime/fieldDescriptor.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/reflection.hpp"
+#include "runtime/signature.hpp"
+#include "runtime/thread.inline.hpp"
+#include "runtime/vmThread.hpp"
+
+
+//------------------------------------------------------------------------------------------------------------------------
+// Implementation of CallInfo
+
+
+void CallInfo::set_static(Klass* resolved_klass, const methodHandle& resolved_method, TRAPS) {
+ int vtable_index = Method::nonvirtual_vtable_index;
+ set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK);
+}
+
+
+void CallInfo::set_interface(Klass* resolved_klass,
+ Klass* selected_klass,
+ const methodHandle& resolved_method,
+ const methodHandle& selected_method,
+ int itable_index, TRAPS) {
+ // This is only called for interface methods. If the resolved_method
+ // comes from java/lang/Object, it can be the subject of a virtual call, so
+ // we should pick the vtable index from the resolved method.
+ // In that case, the caller must call set_virtual instead of set_interface.
+ assert(resolved_method->method_holder()->is_interface(), "");
+ assert(itable_index == resolved_method()->itable_index(), "");
+ set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK);
+}
+
+void CallInfo::set_virtual(Klass* resolved_klass,
+ Klass* selected_klass,
+ const methodHandle& resolved_method,
+ const methodHandle& selected_method,
+ int vtable_index, TRAPS) {
+ assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index");
+ assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), "");
+ CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call);
+ set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK);
+ assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call");
+}
+
+void CallInfo::set_handle(const methodHandle& resolved_method,
+ Handle resolved_appendix,
+ Handle resolved_method_type, TRAPS) {
+ set_handle(SystemDictionary::MethodHandle_klass(), resolved_method, resolved_appendix, resolved_method_type, CHECK);
+}
+
+void CallInfo::set_handle(Klass* resolved_klass,
+ const methodHandle& resolved_method,
+ Handle resolved_appendix,
+ Handle resolved_method_type, TRAPS) {
+ if (resolved_method.is_null()) {
+ THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null");
+ }
+ assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic ||
+ resolved_method->is_compiled_lambda_form(),
+ "linkMethod must return one of these");
+ int vtable_index = Method::nonvirtual_vtable_index;
+ assert(!resolved_method->has_vtable_index(), "");
+ set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK);
+ _resolved_appendix = resolved_appendix;
+ _resolved_method_type = resolved_method_type;
+}
+
+void CallInfo::set_common(Klass* resolved_klass,
+ Klass* selected_klass,
+ const methodHandle& resolved_method,
+ const methodHandle& selected_method,
+ CallKind kind,
+ int index,
+ TRAPS) {
+ assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond");
+ _resolved_klass = resolved_klass;
+ _selected_klass = selected_klass;
+ _resolved_method = resolved_method;
+ _selected_method = selected_method;
+ _call_kind = kind;
+ _call_index = index;
+ _resolved_appendix = Handle();
+ DEBUG_ONLY(verify()); // verify before making side effects
+
+ CompilationPolicy::compile_if_required(selected_method, THREAD);
+}
+
+// utility query for unreflecting a method
+CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass, TRAPS) {
+ Klass* resolved_method_holder = resolved_method->method_holder();
+ if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st
+ resolved_klass = resolved_method_holder;
+ }
+ _resolved_klass = resolved_klass;
+ _selected_klass = resolved_klass;
+ _resolved_method = resolved_method;
+ _selected_method = resolved_method;
+ // classify:
+ CallKind kind = CallInfo::unknown_kind;
+ int index = resolved_method->vtable_index();
+ if (resolved_method->can_be_statically_bound()) {
+ kind = CallInfo::direct_call;
+ } else if (!resolved_method_holder->is_interface()) {
+ // Could be an Object method inherited into an interface, but still a vtable call.
+ kind = CallInfo::vtable_call;
+ } else if (!resolved_klass->is_interface()) {
+ // A default or miranda method. Compute the vtable index.
+ index = LinkResolver::vtable_index_of_interface_method(resolved_klass,
+ resolved_method);
+ assert(index >= 0 , "we should have valid vtable index at this point");
+
+ kind = CallInfo::vtable_call;
+ } else if (resolved_method->has_vtable_index()) {
+ // Can occur if an interface redeclares a method of Object.
+
+#ifdef ASSERT
+ // Ensure that this is really the case.
+ Klass* object_klass = SystemDictionary::Object_klass();
+ Method * object_resolved_method = object_klass->vtable().method_at(index);
+ assert(object_resolved_method->name() == resolved_method->name(),
+ "Object and interface method names should match at vtable index %d, %s != %s",
+ index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string());
+ assert(object_resolved_method->signature() == resolved_method->signature(),
+ "Object and interface method signatures should match at vtable index %d, %s != %s",
+ index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string());
+#endif // ASSERT
+
+ kind = CallInfo::vtable_call;
+ } else {
+ // A regular interface call.
+ kind = CallInfo::itable_call;
+ index = resolved_method->itable_index();
+ }
+ assert(index == Method::nonvirtual_vtable_index || index >= 0, "bad index %d", index);
+ _call_kind = kind;
+ _call_index = index;
+ _resolved_appendix = Handle();
+ // Find or create a ResolvedMethod instance for this Method*
+ set_resolved_method_name(CHECK);
+
+ DEBUG_ONLY(verify());
+}
+
+void CallInfo::set_resolved_method_name(TRAPS) {
+ Method* m = _resolved_method();
+ assert(m != NULL, "Should already have a Method*");
+ oop rmethod_name = java_lang_invoke_ResolvedMethodName::find_resolved_method(m, CHECK);
+ _resolved_method_name = Handle(THREAD, rmethod_name);
+}
+
+#ifdef ASSERT
+void CallInfo::verify() {
+ switch (call_kind()) { // the meaning and allowed value of index depends on kind
+ case CallInfo::direct_call:
+ if (_call_index == Method::nonvirtual_vtable_index) break;
+ // else fall through to check vtable index:
+ case CallInfo::vtable_call:
+ assert(resolved_klass()->verify_vtable_index(_call_index), "");
+ break;
+ case CallInfo::itable_call:
+ assert(resolved_method()->method_holder()->verify_itable_index(_call_index), "");
+ break;
+ case CallInfo::unknown_kind:
+ assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set");
+ break;
+ default:
+ fatal("Unexpected call kind %d", call_kind());
+ }
+}
+#endif //ASSERT
+
+#ifndef PRODUCT
+void CallInfo::print() {
+ ResourceMark rm;
+ const char* kindstr;
+ switch (_call_kind) {
+ case direct_call: kindstr = "direct"; break;
+ case vtable_call: kindstr = "vtable"; break;
+ case itable_call: kindstr = "itable"; break;
+ default : kindstr = "unknown"; break;
+ }
+ tty->print_cr("Call %s@%d %s", kindstr, _call_index,
+ _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string());
+}
+#endif
+
+//------------------------------------------------------------------------------------------------------------------------
+// Implementation of LinkInfo
+
+LinkInfo::LinkInfo(const constantPoolHandle& pool, int index, const methodHandle& current_method, TRAPS) {
+ // resolve klass
+ _resolved_klass = pool->klass_ref_at(index, CHECK);
+
+ // Get name, signature, and static klass
+ _name = pool->name_ref_at(index);
+ _signature = pool->signature_ref_at(index);
+ _tag = pool->tag_ref_at(index);
+ _current_klass = pool->pool_holder();
+ _current_method = current_method;
+
+ // Coming from the constant pool always checks access
+ _check_access = true;
+}
+
+LinkInfo::LinkInfo(const constantPoolHandle& pool, int index, TRAPS) {
+ // resolve klass
+ _resolved_klass = pool->klass_ref_at(index, CHECK);
+
+ // Get name, signature, and static klass
+ _name = pool->name_ref_at(index);
+ _signature = pool->signature_ref_at(index);
+ _tag = pool->tag_ref_at(index);
+ _current_klass = pool->pool_holder();
+ _current_method = methodHandle();
+
+ // Coming from the constant pool always checks access
+ _check_access = true;
+}
+
+char* LinkInfo::method_string() const {
+ return Method::name_and_sig_as_C_string(_resolved_klass, _name, _signature);
+}
+
+#ifndef PRODUCT
+void LinkInfo::print() {
+ ResourceMark rm;
+ tty->print_cr("Link resolved_klass=%s name=%s signature=%s current_klass=%s check_access=%s",
+ _resolved_klass->name()->as_C_string(),
+ _name->as_C_string(),
+ _signature->as_C_string(),
+ _current_klass == NULL ? "(none)" : _current_klass->name()->as_C_string(),
+ _check_access ? "true" : "false");
+}
+#endif // PRODUCT
+//------------------------------------------------------------------------------------------------------------------------
+// Klass resolution
+
+void LinkResolver::check_klass_accessability(Klass* ref_klass, Klass* sel_klass, TRAPS) {
+ Reflection::VerifyClassAccessResults vca_result =
+ Reflection::verify_class_access(ref_klass, InstanceKlass::cast(sel_klass), true);
+ if (vca_result != Reflection::ACCESS_OK) {
+ ResourceMark rm(THREAD);
+ char* msg = Reflection::verify_class_access_msg(ref_klass,
+ InstanceKlass::cast(sel_klass),
+ vca_result);
+ if (msg == NULL) {
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbols::java_lang_IllegalAccessError(),
+ "failed to access class %s from class %s",
+ sel_klass->external_name(),
+ ref_klass->external_name());
+ } else {
+ // Use module specific message returned by verify_class_access_msg().
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbols::java_lang_IllegalAccessError(),
+ "%s", msg);
+ }
+ }
+}
+
+//------------------------------------------------------------------------------------------------------------------------
+// Method resolution
+//
+// According to JVM spec. $5.4.3c & $5.4.3d
+
+// Look up method in klasses, including static methods
+// Then look up local default methods
+Method* LinkResolver::lookup_method_in_klasses(const LinkInfo& link_info,
+ bool checkpolymorphism,
+ bool in_imethod_resolve) {
+ NoSafepointVerifier nsv; // Method* returned may not be reclaimed
+
+ Klass* klass = link_info.resolved_klass();
+ Symbol* name = link_info.name();
+ Symbol* signature = link_info.signature();
+
+ // Ignore overpasses so statics can be found during resolution
+ Method* result = klass->uncached_lookup_method(name, signature, Klass::skip_overpass);
+
+ if (klass->is_array_klass()) {
+ // Only consider klass and super klass for arrays
+ return result;
+ }
+
+ InstanceKlass* ik = InstanceKlass::cast(klass);
+
+ // JDK 8, JVMS 5.4.3.4: Interface method resolution should
+ // ignore static and non-public methods of java.lang.Object,
+ // like clone, finalize, registerNatives.
+ if (in_imethod_resolve &&
+ result != NULL &&
+ ik->is_interface() &&
+ (result->is_static() || !result->is_public()) &&
+ result->method_holder() == SystemDictionary::Object_klass()) {
+ result = NULL;
+ }
+
+ // Before considering default methods, check for an overpass in the
+ // current class if a method has not been found.
+ if (result == NULL) {
+ result = ik->find_method(name, signature);
+ }
+
+ if (result == NULL) {
+ Array<Method*>* default_methods = ik->default_methods();
+ if (default_methods != NULL) {
+ result = InstanceKlass::find_method(default_methods, name, signature);
+ }
+ }
+
+ if (checkpolymorphism && result != NULL) {
+ vmIntrinsics::ID iid = result->intrinsic_id();
+ if (MethodHandles::is_signature_polymorphic(iid)) {
+ // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method.
+ return NULL;
+ }
+ }
+ return result;
+}
+
+// returns first instance method
+// Looks up method in classes, then looks up local default methods
+methodHandle LinkResolver::lookup_instance_method_in_klasses(Klass* klass,
+ Symbol* name,
+ Symbol* signature, TRAPS) {
+ Method* result = klass->uncached_lookup_method(name, signature, Klass::find_overpass);
+
+ while (result != NULL && result->is_static() && result->method_holder()->super() != NULL) {
+ Klass* super_klass = result->method_holder()->super();
+ result = super_klass->uncached_lookup_method(name, signature, Klass::find_overpass);
+ }
+
+ if (klass->is_array_klass()) {
+ // Only consider klass and super klass for arrays
+ return methodHandle(THREAD, result);
+ }
+
+ if (result == NULL) {
+ Array<Method*>* default_methods = InstanceKlass::cast(klass)->default_methods();
+ if (default_methods != NULL) {
+ result = InstanceKlass::find_method(default_methods, name, signature);
+ assert(result == NULL || !result->is_static(), "static defaults not allowed");
+ }
+ }
+ return methodHandle(THREAD, result);
+}
+
+int LinkResolver::vtable_index_of_interface_method(Klass* klass,
+ const methodHandle& resolved_method) {
+
+ int vtable_index = Method::invalid_vtable_index;
+ Symbol* name = resolved_method->name();
+ Symbol* signature = resolved_method->signature();
+ InstanceKlass* ik = InstanceKlass::cast(klass);
+
+ // First check in default method array
+ if (!resolved_method->is_abstract() && ik->default_methods() != NULL) {
+ int index = InstanceKlass::find_method_index(ik->default_methods(),
+ name, signature, Klass::find_overpass,
+ Klass::find_static, Klass::find_private);
+ if (index >= 0 ) {
+ vtable_index = ik->default_vtable_indices()->at(index);
+ }
+ }
+ if (vtable_index == Method::invalid_vtable_index) {
+ // get vtable_index for miranda methods
+ klassVtable vt = ik->vtable();
+ vtable_index = vt.index_of_miranda(name, signature);
+ }
+ return vtable_index;
+}
+
+Method* LinkResolver::lookup_method_in_interfaces(const LinkInfo& cp_info) {
+ InstanceKlass *ik = InstanceKlass::cast(cp_info.resolved_klass());
+
+ // Specify 'true' in order to skip default methods when searching the
+ // interfaces. Function lookup_method_in_klasses() already looked for
+ // the method in the default methods table.
+ return ik->lookup_method_in_all_interfaces(cp_info.name(), cp_info.signature(), Klass::skip_defaults);
+}
+
+methodHandle LinkResolver::lookup_polymorphic_method(
+ const LinkInfo& link_info,
+ Handle *appendix_result_or_null,
+ Handle *method_type_result,
+ TRAPS) {
+ Klass* klass = link_info.resolved_klass();
+ Symbol* name = link_info.name();
+ Symbol* full_signature = link_info.signature();
+
+ vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name);
+ if (TraceMethodHandles) {
+ ResourceMark rm(THREAD);
+ tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s",
+ vmIntrinsics::name_at(iid), klass->external_name(),
+ name->as_C_string(), full_signature->as_C_string());
+ }
+ if ((klass == SystemDictionary::MethodHandle_klass() ||
+ klass == SystemDictionary::VarHandle_klass()) &&
+ iid != vmIntrinsics::_none) {
+ if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) {
+ // Most of these do not need an up-call to Java to resolve, so can be done anywhere.
+ // Do not erase last argument type (MemberName) if it is a static linkTo method.
+ bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid);
+ TempNewSymbol basic_signature =
+ MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK_NULL);
+ if (TraceMethodHandles) {
+ ResourceMark rm(THREAD);
+ tty->print_cr("lookup_polymorphic_method %s %s => basic %s",
+ name->as_C_string(),
+ full_signature->as_C_string(),
+ basic_signature->as_C_string());
+ }
+ methodHandle result = SystemDictionary::find_method_handle_intrinsic(iid,
+ basic_signature,
+ CHECK_NULL);
+ if (result.not_null()) {
+ assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic");
+ assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this");
+ assert(basic_signature == result->signature(), "predict the result signature");
+ if (TraceMethodHandles) {
+ ttyLocker ttyl;
+ tty->print("lookup_polymorphic_method => intrinsic ");
+ result->print_on(tty);
+ }
+ }
+ return result;
+ } else if (iid == vmIntrinsics::_invokeGeneric
+ && THREAD->can_call_java()
+ && appendix_result_or_null != NULL) {
+ // This is a method with type-checking semantics.
+ // We will ask Java code to spin an adapter method for it.
+ if (!MethodHandles::enabled()) {
+ // Make sure the Java part of the runtime has been booted up.
+ Klass* natives = SystemDictionary::MethodHandleNatives_klass();
+ if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) {
+ SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(),
+ Handle(),
+ Handle(),
+ true,
+ CHECK_NULL);
+ }
+ }
+
+ Handle appendix;
+ Handle method_type;
+ methodHandle result = SystemDictionary::find_method_handle_invoker(
+ klass,
+ name,
+ full_signature,
+ link_info.current_klass(),
+ &appendix,
+ &method_type,
+ CHECK_NULL);
+ if (TraceMethodHandles) {
+ ttyLocker ttyl;
+ tty->print("lookup_polymorphic_method => (via Java) ");
+ result->print_on(tty);
+ tty->print(" lookup_polymorphic_method => appendix = ");
+ if (appendix.is_null()) tty->print_cr("(none)");
+ else appendix->print_on(tty);
+ }
+ if (result.not_null()) {
+#ifdef ASSERT
+ ResourceMark rm(THREAD);
+
+ TempNewSymbol basic_signature =
+ MethodHandles::lookup_basic_type_signature(full_signature, CHECK_NULL);
+ int actual_size_of_params = result->size_of_parameters();
+ int expected_size_of_params = ArgumentSizeComputer(basic_signature).size();
+ // +1 for MethodHandle.this, +1 for trailing MethodType
+ if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1;
+ if (appendix.not_null()) expected_size_of_params += 1;
+ if (actual_size_of_params != expected_size_of_params) {
+ tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string());
+ tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid));
+ result->print();
+ }
+ assert(actual_size_of_params == expected_size_of_params,
+ "%d != %d", actual_size_of_params, expected_size_of_params);
+#endif //ASSERT
+
+ assert(appendix_result_or_null != NULL, "");
+ (*appendix_result_or_null) = appendix;
+ (*method_type_result) = method_type;
+ }
+ return result;
+ }
+ }
+ return NULL;
+}
+
+void LinkResolver::check_method_accessability(Klass* ref_klass,
+ Klass* resolved_klass,
+ Klass* sel_klass,
+ const methodHandle& sel_method,
+ TRAPS) {
+
+ AccessFlags flags = sel_method->access_flags();
+
+ // Special case: arrays always override "clone". JVMS 2.15.
+ // If the resolved klass is an array class, and the declaring class
+ // is java.lang.Object and the method is "clone", set the flags
+ // to public.
+ //
+ // We'll check for the method name first, as that's most likely
+ // to be false (so we'll short-circuit out of these tests).
+ if (sel_method->name() == vmSymbols::clone_name() &&
+ sel_klass == SystemDictionary::Object_klass() &&
+ resolved_klass->is_array_klass()) {
+ // We need to change "protected" to "public".
+ assert(flags.is_protected(), "clone not protected?");
+ jint new_flags = flags.as_int();
+ new_flags = new_flags & (~JVM_ACC_PROTECTED);
+ new_flags = new_flags | JVM_ACC_PUBLIC;
+ flags.set_flags(new_flags);
+ }
+// assert(extra_arg_result_or_null != NULL, "must be able to return extra argument");
+
+ if (!Reflection::verify_field_access(ref_klass,
+ resolved_klass,
+ sel_klass,
+ flags,
+ true)) {
+ ResourceMark rm(THREAD);
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbols::java_lang_IllegalAccessError(),
+ "tried to access method %s.%s%s from class %s",
+ sel_klass->external_name(),
+ sel_method->name()->as_C_string(),
+ sel_method->signature()->as_C_string(),
+ ref_klass->external_name()
+ );
+ return;
+ }
+}
+
+methodHandle LinkResolver::resolve_method_statically(Bytecodes::Code code,
+ const constantPoolHandle& pool, int index, TRAPS) {
+ // This method is used only
+ // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call),
+ // and
+ // (2) in Bytecode_invoke::static_target
+ // It appears to fail when applied to an invokeinterface call site.
+ // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points.
+ // resolve klass
+ if (code == Bytecodes::_invokedynamic) {
+ Klass* resolved_klass = SystemDictionary::MethodHandle_klass();
+ Symbol* method_name = vmSymbols::invoke_name();
+ Symbol* method_signature = pool->signature_ref_at(index);
+ Klass* current_klass = pool->pool_holder();
+ LinkInfo link_info(resolved_klass, method_name, method_signature, current_klass);
+ return resolve_method(link_info, code, THREAD);
+ }
+
+ LinkInfo link_info(pool, index, methodHandle(), CHECK_NULL);
+ Klass* resolved_klass = link_info.resolved_klass();
+
+ if (pool->has_preresolution()
+ || (resolved_klass == SystemDictionary::MethodHandle_klass() &&
+ MethodHandles::is_signature_polymorphic_name(resolved_klass, link_info.name()))) {
+ Method* result = ConstantPool::method_at_if_loaded(pool, index);
+ if (result != NULL) {
+ return methodHandle(THREAD, result);
+ }
+ }
+
+ if (code == Bytecodes::_invokeinterface) {
+ return resolve_interface_method(link_info, code, THREAD);
+ } else if (code == Bytecodes::_invokevirtual) {
+ return resolve_method(link_info, code, THREAD);
+ } else if (!resolved_klass->is_interface()) {
+ return resolve_method(link_info, code, THREAD);
+ } else {
+ return resolve_interface_method(link_info, code, THREAD);
+ }
+}
+
+// Check and print a loader constraint violation message for method or interface method
+void LinkResolver::check_method_loader_constraints(const LinkInfo& link_info,
+ const methodHandle& resolved_method,
+ const char* method_type, TRAPS) {
+ Handle current_loader(THREAD, link_info.current_klass()->class_loader());
+ Handle resolved_loader(THREAD, resolved_method->method_holder()->class_loader());
+
+ ResourceMark rm(THREAD);
+ Symbol* failed_type_symbol =
+ SystemDictionary::check_signature_loaders(link_info.signature(), current_loader,
+ resolved_loader, true, CHECK);
+ if (failed_type_symbol != NULL) {
+ const char* msg = "loader constraint violation: when resolving %s"
+ " \"%s\" the class loader (instance of %s) of the current class, %s,"
+ " and the class loader (instance of %s) for the method's defining class, %s, have"
+ " different Class objects for the type %s used in the signature";
+ char* sig = link_info.method_string();
+ const char* loader1_name = SystemDictionary::loader_name(current_loader());
+ char* current = link_info.current_klass()->name()->as_C_string();
+ const char* loader2_name = SystemDictionary::loader_name(resolved_loader());
+ char* target = resolved_method->method_holder()->name()->as_C_string();
+ char* failed_type_name = failed_type_symbol->as_C_string();
+ size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1_name) +
+ strlen(current) + strlen(loader2_name) + strlen(target) +
+ strlen(failed_type_name) + strlen(method_type) + 1;
+ char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
+ jio_snprintf(buf, buflen, msg, method_type, sig, loader1_name, current, loader2_name,
+ target, failed_type_name);
+ THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
+ }
+}
+
+void LinkResolver::check_field_loader_constraints(Symbol* field, Symbol* sig,
+ Klass* current_klass,
+ Klass* sel_klass, TRAPS) {
+ Handle ref_loader(THREAD, current_klass->class_loader());
+ Handle sel_loader(THREAD, sel_klass->class_loader());
+
+ ResourceMark rm(THREAD); // needed for check_signature_loaders
+ Symbol* failed_type_symbol =
+ SystemDictionary::check_signature_loaders(sig,
+ ref_loader, sel_loader,
+ false,
+ CHECK);
+ if (failed_type_symbol != NULL) {
+ const char* msg = "loader constraint violation: when resolving field"
+ " \"%s\" the class loader (instance of %s) of the referring class, "
+ "%s, and the class loader (instance of %s) for the field's resolved "
+ "type, %s, have different Class objects for that type";
+ char* field_name = field->as_C_string();
+ const char* loader1_name = SystemDictionary::loader_name(ref_loader());
+ char* sel = sel_klass->name()->as_C_string();
+ const char* loader2_name = SystemDictionary::loader_name(sel_loader());
+ char* failed_type_name = failed_type_symbol->as_C_string();
+ size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1_name) +
+ strlen(sel) + strlen(loader2_name) + strlen(failed_type_name) + 1;
+ char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
+ jio_snprintf(buf, buflen, msg, field_name, loader1_name, sel, loader2_name,
+ failed_type_name);
+ THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
+ }
+}
+
+methodHandle LinkResolver::resolve_method(const LinkInfo& link_info,
+ Bytecodes::Code code, TRAPS) {
+
+ Handle nested_exception;
+ Klass* resolved_klass = link_info.resolved_klass();
+
+ // 1. For invokevirtual, cannot call an interface method
+ if (code == Bytecodes::_invokevirtual && resolved_klass->is_interface()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected",
+ resolved_klass->external_name());
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // 2. check constant pool tag for called method - must be JVM_CONSTANT_Methodref
+ if (!link_info.tag().is_invalid() && !link_info.tag().is_method()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Method %s must be Methodref constant", link_info.method_string());
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // 3. lookup method in resolved klass and its super klasses
+ methodHandle resolved_method(THREAD, lookup_method_in_klasses(link_info, true, false));
+
+ // 4. lookup method in all the interfaces implemented by the resolved klass
+ if (resolved_method.is_null() && !resolved_klass->is_array_klass()) { // not found in the class hierarchy
+ resolved_method = methodHandle(THREAD, lookup_method_in_interfaces(link_info));
+
+ if (resolved_method.is_null()) {
+ // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc
+ resolved_method = lookup_polymorphic_method(link_info, (Handle*)NULL, (Handle*)NULL, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ nested_exception = Handle(THREAD, PENDING_EXCEPTION);
+ CLEAR_PENDING_EXCEPTION;
+ }
+ }
+ }
+
+ // 5. method lookup failed
+ if (resolved_method.is_null()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG_CAUSE_(vmSymbols::java_lang_NoSuchMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ link_info.name(),
+ link_info.signature()),
+ nested_exception, NULL);
+ }
+
+ // 5. access checks, access checking may be turned off when calling from within the VM.
+ Klass* current_klass = link_info.current_klass();
+ if (link_info.check_access()) {
+ assert(current_klass != NULL , "current_klass should not be null");
+
+ // check if method can be accessed by the referring class
+ check_method_accessability(current_klass,
+ resolved_klass,
+ resolved_method->method_holder(),
+ resolved_method,
+ CHECK_NULL);
+
+ // check loader constraints
+ check_method_loader_constraints(link_info, resolved_method, "method", CHECK_NULL);
+ }
+
+ return resolved_method;
+}
+
+static void trace_method_resolution(const char* prefix,
+ Klass* klass,
+ Klass* resolved_klass,
+ const methodHandle& method,
+ bool logitables,
+ int index = -1) {
+#ifndef PRODUCT
+ ResourceMark rm;
+ Log(itables) logi;
+ LogStream lsi(logi.trace());
+ Log(vtables) logv;
+ LogStream lsv(logv.trace());
+ outputStream* st;
+ if (logitables) {
+ st = &lsi;
+ } else {
+ st = &lsv;
+ }
+ st->print("%s%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ",
+ prefix,
+ (klass == NULL ? "<NULL>" : klass->internal_name()),
+ (resolved_klass == NULL ? "<NULL>" : resolved_klass->internal_name()),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ method->name(),
+ method->signature()),
+ method->method_holder()->internal_name());
+ method->print_linkage_flags(st);
+ if (index != -1) {
+ st->print("vtable_index:%d", index);
+ }
+ st->cr();
+#endif // PRODUCT
+}
+
+// Do linktime resolution of a method in the interface within the context of the specied bytecode.
+methodHandle LinkResolver::resolve_interface_method(const LinkInfo& link_info, Bytecodes::Code code, TRAPS) {
+
+ Klass* resolved_klass = link_info.resolved_klass();
+
+ // check if klass is interface
+ if (!resolved_klass->is_interface()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass->external_name());
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // check constant pool tag for called method - must be JVM_CONSTANT_InterfaceMethodref
+ if (!link_info.tag().is_invalid() && !link_info.tag().is_interface_method()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Method %s must be InterfaceMethodref constant", link_info.method_string());
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // lookup method in this interface or its super, java.lang.Object
+ // JDK8: also look for static methods
+ methodHandle resolved_method(THREAD, lookup_method_in_klasses(link_info, false, true));
+
+ if (resolved_method.is_null() && !resolved_klass->is_array_klass()) {
+ // lookup method in all the super-interfaces
+ resolved_method = methodHandle(THREAD, lookup_method_in_interfaces(link_info));
+ }
+
+ if (resolved_method.is_null()) {
+ // no method found
+ ResourceMark rm(THREAD);
+ THROW_MSG_NULL(vmSymbols::java_lang_NoSuchMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ link_info.name(),
+ link_info.signature()));
+ }
+
+ if (link_info.check_access()) {
+ // JDK8 adds non-public interface methods, and accessability check requirement
+ Klass* current_klass = link_info.current_klass();
+
+ assert(current_klass != NULL , "current_klass should not be null");
+
+ // check if method can be accessed by the referring class
+ check_method_accessability(current_klass,
+ resolved_klass,
+ resolved_method->method_holder(),
+ resolved_method,
+ CHECK_NULL);
+
+ check_method_loader_constraints(link_info, resolved_method, "interface method", CHECK_NULL);
+ }
+
+ if (code != Bytecodes::_invokestatic && resolved_method->is_static()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s",
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(), resolved_method->signature()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ if (code == Bytecodes::_invokeinterface && resolved_method->is_private()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+
+ Klass* current_klass = link_info.current_klass();
+ jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s, caller-class:%s",
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()),
+ (current_klass == NULL ? "<NULL>" : current_klass->internal_name()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ if (log_develop_is_enabled(Trace, itables)) {
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "%s resolved interface method: caller-class:",
+ Bytecodes::name(code));
+ trace_method_resolution(buf, link_info.current_klass(), resolved_klass,
+ resolved_method, true);
+ }
+
+ return resolved_method;
+}
+
+//------------------------------------------------------------------------------------------------------------------------
+// Field resolution
+
+void LinkResolver::check_field_accessability(Klass* ref_klass,
+ Klass* resolved_klass,
+ Klass* sel_klass,
+ const fieldDescriptor& fd,
+ TRAPS) {
+ if (!Reflection::verify_field_access(ref_klass,
+ resolved_klass,
+ sel_klass,
+ fd.access_flags(),
+ true)) {
+ ResourceMark rm(THREAD);
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbols::java_lang_IllegalAccessError(),
+ "tried to access field %s.%s from class %s",
+ sel_klass->external_name(),
+ fd.name()->as_C_string(),
+ ref_klass->external_name()
+ );
+ return;
+ }
+}
+
+void LinkResolver::resolve_field_access(fieldDescriptor& fd, const constantPoolHandle& pool, int index, const methodHandle& method, Bytecodes::Code byte, TRAPS) {
+ LinkInfo link_info(pool, index, method, CHECK);
+ resolve_field(fd, link_info, byte, true, CHECK);
+}
+
+void LinkResolver::resolve_field(fieldDescriptor& fd,
+ const LinkInfo& link_info,
+ Bytecodes::Code byte, bool initialize_class,
+ TRAPS) {
+ assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
+ byte == Bytecodes::_getfield || byte == Bytecodes::_putfield ||
+ byte == Bytecodes::_nofast_getfield || byte == Bytecodes::_nofast_putfield ||
+ (byte == Bytecodes::_nop && !link_info.check_access()), "bad field access bytecode");
+
+ bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
+ bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic || byte == Bytecodes::_nofast_putfield);
+ // Check if there's a resolved klass containing the field
+ Klass* resolved_klass = link_info.resolved_klass();
+ Symbol* field = link_info.name();
+ Symbol* sig = link_info.signature();
+
+ if (resolved_klass == NULL) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
+ }
+
+ // Resolve instance field
+ Klass* sel_klass = resolved_klass->find_field(field, sig, &fd);
+ // check if field exists; i.e., if a klass containing the field def has been selected
+ if (sel_klass == NULL) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
+ }
+
+ if (!link_info.check_access())
+ // Access checking may be turned off when calling from within the VM.
+ return;
+
+ // check access
+ Klass* current_klass = link_info.current_klass();
+ check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK);
+
+ // check for errors
+ if (is_static != fd.is_static()) {
+ ResourceMark rm(THREAD);
+ char msg[200];
+ jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass->external_name(), fd.name()->as_C_string());
+ THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg);
+ }
+
+ // A final field can be modified only
+ // (1) by methods declared in the class declaring the field and
+ // (2) by the <clinit> method (in case of a static field)
+ // or by the <init> method (in case of an instance field).
+ if (is_put && fd.access_flags().is_final()) {
+ ResourceMark rm(THREAD);
+ stringStream ss;
+
+ if (sel_klass != current_klass) {
+ ss.print("Update to %s final field %s.%s attempted from a different class (%s) than the field's declaring class",
+ is_static ? "static" : "non-static", resolved_klass->external_name(), fd.name()->as_C_string(),
+ current_klass->external_name());
+ THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), ss.as_string());
+ }
+
+ if (fd.constants()->pool_holder()->major_version() >= 53) {
+ methodHandle m = link_info.current_method();
+ assert(!m.is_null(), "information about the current method must be available for 'put' bytecodes");
+ bool is_initialized_static_final_update = (byte == Bytecodes::_putstatic &&
+ fd.is_static() &&
+ !m()->is_static_initializer());
+ bool is_initialized_instance_final_update = ((byte == Bytecodes::_putfield || byte == Bytecodes::_nofast_putfield) &&
+ !fd.is_static() &&
+ !m->is_object_initializer());
+
+ if (is_initialized_static_final_update || is_initialized_instance_final_update) {
+ ss.print("Update to %s final field %s.%s attempted from a different method (%s) than the initializer method %s ",
+ is_static ? "static" : "non-static", resolved_klass->external_name(), fd.name()->as_C_string(),
+ m()->name()->as_C_string(),
+ is_static ? "<clinit>" : "<init>");
+ THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), ss.as_string());
+ }
+ }
+ }
+
+ // initialize resolved_klass if necessary
+ // note 1: the klass which declared the field must be initialized (i.e, sel_klass)
+ // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99)
+ //
+ // note 2: we don't want to force initialization if we are just checking
+ // if the field access is legal; e.g., during compilation
+ if (is_static && initialize_class) {
+ sel_klass->initialize(CHECK);
+ }
+
+ if (sel_klass != current_klass) {
+ check_field_loader_constraints(field, sig, current_klass, sel_klass, CHECK);
+ }
+
+ // return information. note that the klass is set to the actual klass containing the
+ // field, otherwise access of static fields in superclasses will not work.
+}
+
+
+//------------------------------------------------------------------------------------------------------------------------
+// Invoke resolution
+//
+// Naming conventions:
+//
+// resolved_method the specified method (i.e., static receiver specified via constant pool index)
+// sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class)
+// resolved_klass the specified klass (i.e., specified via constant pool index)
+// recv_klass the receiver klass
+
+
+void LinkResolver::resolve_static_call(CallInfo& result,
+ const LinkInfo& link_info,
+ bool initialize_class, TRAPS) {
+ methodHandle resolved_method = linktime_resolve_static_method(link_info, CHECK);
+
+ // The resolved class can change as a result of this resolution.
+ Klass* resolved_klass = resolved_method->method_holder();
+
+ // Initialize klass (this should only happen if everything is ok)
+ if (initialize_class && resolved_klass->should_be_initialized()) {
+ resolved_klass->initialize(CHECK);
+ // Use updated LinkInfo to reresolve with resolved method holder
+ LinkInfo new_info(resolved_klass, link_info.name(), link_info.signature(),
+ link_info.current_klass(),
+ link_info.check_access() ? LinkInfo::needs_access_check : LinkInfo::skip_access_check);
+ resolved_method = linktime_resolve_static_method(new_info, CHECK);
+ }
+
+ // setup result
+ result.set_static(resolved_klass, resolved_method, CHECK);
+}
+
+// throws linktime exceptions
+methodHandle LinkResolver::linktime_resolve_static_method(const LinkInfo& link_info, TRAPS) {
+
+ Klass* resolved_klass = link_info.resolved_klass();
+ methodHandle resolved_method;
+ if (!resolved_klass->is_interface()) {
+ resolved_method = resolve_method(link_info, Bytecodes::_invokestatic, CHECK_NULL);
+ } else {
+ resolved_method = resolve_interface_method(link_info, Bytecodes::_invokestatic, CHECK_NULL);
+ }
+ assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
+
+ // check if static
+ if (!resolved_method->is_static()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+ return resolved_method;
+}
+
+
+void LinkResolver::resolve_special_call(CallInfo& result,
+ Handle recv,
+ const LinkInfo& link_info,
+ TRAPS) {
+ methodHandle resolved_method = linktime_resolve_special_method(link_info, CHECK);
+ runtime_resolve_special_method(result, resolved_method,
+ link_info.resolved_klass(),
+ link_info.current_klass(),
+ recv,
+ link_info.check_access(), CHECK);
+}
+
+// throws linktime exceptions
+methodHandle LinkResolver::linktime_resolve_special_method(const LinkInfo& link_info,
+ TRAPS) {
+
+ // Invokespecial is called for multiple special reasons:
+ // <init>
+ // local private method invocation, for classes and interfaces
+ // superclass.method, which can also resolve to a default method
+ // and the selected method is recalculated relative to the direct superclass
+ // superinterface.method, which explicitly does not check shadowing
+ Klass* resolved_klass = link_info.resolved_klass();
+ methodHandle resolved_method;
+
+ if (!resolved_klass->is_interface()) {
+ resolved_method = resolve_method(link_info, Bytecodes::_invokespecial, CHECK_NULL);
+ } else {
+ resolved_method = resolve_interface_method(link_info, Bytecodes::_invokespecial, CHECK_NULL);
+ }
+
+ // check if method name is <init>, that it is found in same klass as static type
+ if (resolved_method->name() == vmSymbols::object_initializer_name() &&
+ resolved_method->method_holder() != resolved_klass) {
+ ResourceMark rm(THREAD);
+ Exceptions::fthrow(
+ THREAD_AND_LOCATION,
+ vmSymbols::java_lang_NoSuchMethodError(),
+ "%s: method %s%s not found",
+ resolved_klass->external_name(),
+ resolved_method->name()->as_C_string(),
+ resolved_method->signature()->as_C_string()
+ );
+ return NULL;
+ }
+
+ // check if invokespecial's interface method reference is in an indirect superinterface
+ Klass* current_klass = link_info.current_klass();
+ if (current_klass != NULL && resolved_klass->is_interface()) {
+ InstanceKlass* ck = InstanceKlass::cast(current_klass);
+ InstanceKlass *klass_to_check = !ck->is_anonymous() ?
+ ck :
+ InstanceKlass::cast(ck->host_klass());
+ // Disable verification for the dynamically-generated reflection bytecodes.
+ bool is_reflect = klass_to_check->is_subclass_of(
+ SystemDictionary::reflect_MagicAccessorImpl_klass());
+
+ if (!is_reflect &&
+ !klass_to_check->is_same_or_direct_interface(resolved_klass)) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf),
+ "Interface method reference: %s, is in an indirect superinterface of %s",
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()),
+ current_klass->external_name());
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+ }
+
+ // check if not static
+ if (resolved_method->is_static()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf),
+ "Expecting non-static method %s",
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ if (log_develop_is_enabled(Trace, itables)) {
+ trace_method_resolution("invokespecial resolved method: caller-class:",
+ current_klass, resolved_klass, resolved_method, true);
+ }
+
+ return resolved_method;
+}
+
+// throws runtime exceptions
+void LinkResolver::runtime_resolve_special_method(CallInfo& result,
+ const methodHandle& resolved_method,
+ Klass* resolved_klass,
+ Klass* current_klass,
+ Handle recv,
+ bool check_access, TRAPS) {
+
+ // resolved method is selected method unless we have an old-style lookup
+ // for a superclass method
+ // Invokespecial for a superinterface, resolved method is selected method,
+ // no checks for shadowing
+ methodHandle sel_method(THREAD, resolved_method());
+
+ if (check_access &&
+ // check if the method is not <init>
+ resolved_method->name() != vmSymbols::object_initializer_name()) {
+
+ // check if this is an old-style super call and do a new lookup if so
+ // a) check if ACC_SUPER flag is set for the current class
+ if ((current_klass->is_super() || !AllowNonVirtualCalls) &&
+ // b) check if the class of the resolved_klass is a superclass
+ // (not supertype in order to exclude interface classes) of the current class.
+ // This check is not performed for super.invoke for interface methods
+ // in super interfaces.
+ current_klass->is_subclass_of(resolved_klass) &&
+ current_klass != resolved_klass) {
+ // Lookup super method
+ Klass* super_klass = current_klass->super();
+ sel_method = lookup_instance_method_in_klasses(super_klass,
+ resolved_method->name(),
+ resolved_method->signature(), CHECK);
+ // check if found
+ if (sel_method.is_null()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ }
+ }
+
+ // Check that the class of objectref (the receiver) is the current class or interface,
+ // or a subtype of the current class or interface (the sender), otherwise invokespecial
+ // throws IllegalAccessError.
+ // The verifier checks that the sender is a subtype of the class in the I/MR operand.
+ // The verifier also checks that the receiver is a subtype of the sender, if the sender is
+ // a class. If the sender is an interface, the check has to be performed at runtime.
+ InstanceKlass* sender = InstanceKlass::cast(current_klass);
+ sender = sender->is_anonymous() ? sender->host_klass() : sender;
+ if (sender->is_interface() && recv.not_null()) {
+ Klass* receiver_klass = recv->klass();
+ if (!receiver_klass->is_subtype_of(sender)) {
+ ResourceMark rm(THREAD);
+ char buf[500];
+ jio_snprintf(buf, sizeof(buf),
+ "Receiver class %s must be the current class or a subtype of interface %s",
+ receiver_klass->name()->as_C_string(),
+ sender->name()->as_C_string());
+ THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), buf);
+ }
+ }
+ }
+
+ // check if not static
+ if (sel_method->is_static()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // check if abstract
+ if (sel_method->is_abstract()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ sel_method->name(),
+ sel_method->signature()));
+ }
+
+ if (log_develop_is_enabled(Trace, itables)) {
+ trace_method_resolution("invokespecial selected method: resolved-class:",
+ resolved_klass, resolved_klass, sel_method, true);
+ }
+
+ // setup result
+ result.set_static(resolved_klass, sel_method, CHECK);
+}
+
+void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, Klass* receiver_klass,
+ const LinkInfo& link_info,
+ bool check_null_and_abstract, TRAPS) {
+ methodHandle resolved_method = linktime_resolve_virtual_method(link_info, CHECK);
+ runtime_resolve_virtual_method(result, resolved_method,
+ link_info.resolved_klass(),
+ recv, receiver_klass,
+ check_null_and_abstract, CHECK);
+}
+
+// throws linktime exceptions
+methodHandle LinkResolver::linktime_resolve_virtual_method(const LinkInfo& link_info,
+ TRAPS) {
+ // normal method resolution
+ methodHandle resolved_method = resolve_method(link_info, Bytecodes::_invokevirtual, CHECK_NULL);
+
+ assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
+ assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
+
+ // check if private interface method
+ Klass* resolved_klass = link_info.resolved_klass();
+ Klass* current_klass = link_info.current_klass();
+
+ // This is impossible, if resolve_klass is an interface, we've thrown icce in resolve_method
+ if (resolved_klass->is_interface() && resolved_method->is_private()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s",
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()),
+ (current_klass == NULL ? "<NULL>" : current_klass->internal_name()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // check if not static
+ if (resolved_method->is_static()) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ if (log_develop_is_enabled(Trace, vtables)) {
+ trace_method_resolution("invokevirtual resolved method: caller-class:",
+ current_klass, resolved_klass, resolved_method, false);
+ }
+
+ return resolved_method;
+}
+
+// throws runtime exceptions
+void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
+ const methodHandle& resolved_method,
+ Klass* resolved_klass,
+ Handle recv,
+ Klass* recv_klass,
+ bool check_null_and_abstract,
+ TRAPS) {
+
+ // setup default return values
+ int vtable_index = Method::invalid_vtable_index;
+ methodHandle selected_method;
+
+ // runtime method resolution
+ if (check_null_and_abstract && recv.is_null()) { // check if receiver exists
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+
+ // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s
+ // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since
+ // a missing receiver might result in a bogus lookup.
+ assert(resolved_method->method_holder()->is_linked(), "must be linked");
+
+ // do lookup based on receiver klass using the vtable index
+ if (resolved_method->method_holder()->is_interface()) { // default or miranda method
+ vtable_index = vtable_index_of_interface_method(resolved_klass,
+ resolved_method);
+ assert(vtable_index >= 0 , "we should have valid vtable index at this point");
+
+ selected_method = methodHandle(THREAD, recv_klass->method_at_vtable(vtable_index));
+ } else {
+ // at this point we are sure that resolved_method is virtual and not
+ // a default or miranda method; therefore, it must have a valid vtable index.
+ assert(!resolved_method->has_itable_index(), "");
+ vtable_index = resolved_method->vtable_index();
+ // We could get a negative vtable_index for final methods,
+ // because as an optimization they are they are never put in the vtable,
+ // unless they override an existing method.
+ // If we do get a negative, it means the resolved method is the the selected
+ // method, and it can never be changed by an override.
+ if (vtable_index == Method::nonvirtual_vtable_index) {
+ assert(resolved_method->can_be_statically_bound(), "cannot override this method");
+ selected_method = resolved_method;
+ } else {
+ selected_method = methodHandle(THREAD, recv_klass->method_at_vtable(vtable_index));
+ }
+ }
+
+ // check if method exists
+ if (selected_method.is_null()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ }
+
+ // check if abstract
+ if (check_null_and_abstract && selected_method->is_abstract()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass,
+ selected_method->name(),
+ selected_method->signature()));
+ }
+
+ if (log_develop_is_enabled(Trace, vtables)) {
+ trace_method_resolution("invokevirtual selected method: receiver-class:",
+ recv_klass, resolved_klass, selected_method,
+ false, vtable_index);
+ }
+ // setup result
+ result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
+}
+
+void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, Klass* recv_klass,
+ const LinkInfo& link_info,
+ bool check_null_and_abstract, TRAPS) {
+ // throws linktime exceptions
+ methodHandle resolved_method = linktime_resolve_interface_method(link_info, CHECK);
+ runtime_resolve_interface_method(result, resolved_method,link_info.resolved_klass(),
+ recv, recv_klass, check_null_and_abstract, CHECK);
+}
+
+methodHandle LinkResolver::linktime_resolve_interface_method(const LinkInfo& link_info,
+ TRAPS) {
+ // normal interface method resolution
+ methodHandle resolved_method = resolve_interface_method(link_info, Bytecodes::_invokeinterface, CHECK_NULL);
+ assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
+ assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
+
+ return resolved_method;
+}
+
+// throws runtime exceptions
+void LinkResolver::runtime_resolve_interface_method(CallInfo& result,
+ const methodHandle& resolved_method,
+ Klass* resolved_klass,
+ Handle recv,
+ Klass* recv_klass,
+ bool check_null_and_abstract, TRAPS) {
+ // check if receiver exists
+ if (check_null_and_abstract && recv.is_null()) {
+ THROW(vmSymbols::java_lang_NullPointerException());
+ }
+
+ // check if receiver klass implements the resolved interface
+ if (!recv_klass->is_subtype_of(resolved_klass)) {
+ ResourceMark rm(THREAD);
+ char buf[200];
+ jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
+ recv_klass->external_name(),
+ resolved_klass->external_name());
+ THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ }
+
+ // do lookup based on receiver klass
+ // This search must match the linktime preparation search for itable initialization
+ // to correctly enforce loader constraints for interface method inheritance
+ methodHandle sel_method = lookup_instance_method_in_klasses(recv_klass,
+ resolved_method->name(),
+ resolved_method->signature(), CHECK);
+ if (sel_method.is_null() && !check_null_and_abstract) {
+ // In theory this is a harmless placeholder value, but
+ // in practice leaving in null affects the nsk default method tests.
+ // This needs further study.
+ sel_method = resolved_method;
+ }
+ // check if method exists
+ if (sel_method.is_null()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(recv_klass,
+ resolved_method->name(),
+ resolved_method->signature()));
+ }
+ // check access
+ // Throw Illegal Access Error if sel_method is not public.
+ if (!sel_method->is_public()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_IllegalAccessError(),
+ Method::name_and_sig_as_C_string(recv_klass,
+ sel_method->name(),
+ sel_method->signature()));
+ }
+ // check if abstract
+ if (check_null_and_abstract && sel_method->is_abstract()) {
+ ResourceMark rm(THREAD);
+ THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
+ Method::name_and_sig_as_C_string(recv_klass,
+ sel_method->name(),
+ sel_method->signature()));
+ }
+
+ if (log_develop_is_enabled(Trace, itables)) {
+ trace_method_resolution("invokeinterface selected method: receiver-class:",
+ recv_klass, resolved_klass, sel_method, true);
+ }
+ // setup result
+ if (!resolved_method->has_itable_index()) {
+ int vtable_index = resolved_method->vtable_index();
+ assert(vtable_index == sel_method->vtable_index(), "sanity check");
+ result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK);
+ } else {
+ int itable_index = resolved_method()->itable_index();
+ result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK);
+ }
+}
+
+
+methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
+ const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ methodHandle method_result = linktime_resolve_interface_method(link_info, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return methodHandle();
+ } else {
+ return method_result;
+ }
+}
+
+methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
+ const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ methodHandle method_result = linktime_resolve_virtual_method(link_info, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return methodHandle();
+ } else {
+ return method_result;
+ }
+}
+
+methodHandle LinkResolver::resolve_virtual_call_or_null(
+ Klass* receiver_klass,
+ const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ CallInfo info;
+ resolve_virtual_call(info, Handle(), receiver_klass, link_info, false, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return methodHandle();
+ }
+ return info.selected_method();
+}
+
+methodHandle LinkResolver::resolve_interface_call_or_null(
+ Klass* receiver_klass,
+ const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ CallInfo info;
+ resolve_interface_call(info, Handle(), receiver_klass, link_info, false, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return methodHandle();
+ }
+ return info.selected_method();
+}
+
+int LinkResolver::resolve_virtual_vtable_index(Klass* receiver_klass,
+ const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ CallInfo info;
+ resolve_virtual_call(info, Handle(), receiver_klass, link_info,
+ /*check_null_or_abstract*/false, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return Method::invalid_vtable_index;
+ }
+ return info.vtable_index();
+}
+
+methodHandle LinkResolver::resolve_static_call_or_null(const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ CallInfo info;
+ resolve_static_call(info, link_info, /*initialize_class*/false, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return methodHandle();
+ }
+ return info.selected_method();
+}
+
+methodHandle LinkResolver::resolve_special_call_or_null(const LinkInfo& link_info) {
+ EXCEPTION_MARK;
+ CallInfo info;
+ resolve_special_call(info, Handle(), link_info, THREAD);
+ if (HAS_PENDING_EXCEPTION) {
+ CLEAR_PENDING_EXCEPTION;
+ return methodHandle();
+ }
+ return info.selected_method();
+}
+
+
+
+//------------------------------------------------------------------------------------------------------------------------
+// ConstantPool entries
+
+void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, const constantPoolHandle& pool, int index, Bytecodes::Code byte, TRAPS) {
+ switch (byte) {
+ case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break;
+ case Bytecodes::_invokespecial : resolve_invokespecial (result, recv, pool, index, CHECK); break;
+ case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break;
+ case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break;
+ case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break;
+ case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break;
+ default : break;
+ }
+ return;
+}
+
+void LinkResolver::resolve_invoke(CallInfo& result, Handle& recv,
+ const methodHandle& attached_method,
+ Bytecodes::Code byte, TRAPS) {
+ Klass* defc = attached_method->method_holder();
+ Symbol* name = attached_method->name();
+ Symbol* type = attached_method->signature();
+ LinkInfo link_info(defc, name, type);
+ switch(byte) {
+ case Bytecodes::_invokevirtual:
+ resolve_virtual_call(result, recv, recv->klass(), link_info,
+ /*check_null_and_abstract=*/true, CHECK);
+ break;
+ case Bytecodes::_invokeinterface:
+ resolve_interface_call(result, recv, recv->klass(), link_info,
+ /*check_null_and_abstract=*/true, CHECK);
+ break;
+ case Bytecodes::_invokestatic:
+ resolve_static_call(result, link_info, /*initialize_class=*/false, CHECK);
+ break;
+ case Bytecodes::_invokespecial:
+ resolve_special_call(result, recv, link_info, CHECK);
+ break;
+ default:
+ fatal("bad call: %s", Bytecodes::name(byte));
+ break;
+ }
+}
+
+void LinkResolver::resolve_invokestatic(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) {
+ LinkInfo link_info(pool, index, CHECK);
+ resolve_static_call(result, link_info, /*initialize_class*/true, CHECK);
+}
+
+
+void LinkResolver::resolve_invokespecial(CallInfo& result, Handle recv,
+ const constantPoolHandle& pool, int index, TRAPS) {
+ LinkInfo link_info(pool, index, CHECK);
+ resolve_special_call(result, recv, link_info, CHECK);
+}
+
+
+void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv,
+ const constantPoolHandle& pool, int index,
+ TRAPS) {
+
+ LinkInfo link_info(pool, index, CHECK);
+ Klass* recvrKlass = recv.is_null() ? (Klass*)NULL : recv->klass();
+ resolve_virtual_call(result, recv, recvrKlass, link_info, /*check_null_or_abstract*/true, CHECK);
+}
+
+
+void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, const constantPoolHandle& pool, int index, TRAPS) {
+ LinkInfo link_info(pool, index, CHECK);
+ Klass* recvrKlass = recv.is_null() ? (Klass*)NULL : recv->klass();
+ resolve_interface_call(result, recv, recvrKlass, link_info, true, CHECK);
+}
+
+
+void LinkResolver::resolve_invokehandle(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) {
+ // This guy is reached from InterpreterRuntime::resolve_invokehandle.
+ LinkInfo link_info(pool, index, CHECK);
+ if (TraceMethodHandles) {
+ ResourceMark rm(THREAD);
+ tty->print_cr("resolve_invokehandle %s %s", link_info.name()->as_C_string(),
+ link_info.signature()->as_C_string());
+ }
+ resolve_handle_call(result, link_info, CHECK);
+}
+
+void LinkResolver::resolve_handle_call(CallInfo& result,
+ const LinkInfo& link_info,
+ TRAPS) {
+ // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar
+ Klass* resolved_klass = link_info.resolved_klass();
+ assert(resolved_klass == SystemDictionary::MethodHandle_klass() ||
+ resolved_klass == SystemDictionary::VarHandle_klass(), "");
+ assert(MethodHandles::is_signature_polymorphic_name(link_info.name()), "");
+ Handle resolved_appendix;
+ Handle resolved_method_type;
+ methodHandle resolved_method = lookup_polymorphic_method(link_info,
+ &resolved_appendix, &resolved_method_type, CHECK);
+ result.set_handle(resolved_klass, resolved_method, resolved_appendix, resolved_method_type, CHECK);
+}
+
+static void wrap_invokedynamic_exception(TRAPS) {
+ if (HAS_PENDING_EXCEPTION) {
+ // See the "Linking Exceptions" section for the invokedynamic instruction
+ // in JVMS 6.5.
+ if (PENDING_EXCEPTION->is_a(SystemDictionary::Error_klass())) {
+ // Pass through an Error, including BootstrapMethodError, any other form
+ // of linkage error, or say ThreadDeath/OutOfMemoryError
+ if (TraceMethodHandles) {
+ tty->print_cr("invokedynamic passes through an Error for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION));
+ PENDING_EXCEPTION->print();
+ }
+ return;
+ }
+
+ // Otherwise wrap the exception in a BootstrapMethodError
+ if (TraceMethodHandles) {
+ tty->print_cr("invokedynamic throws BSME for " INTPTR_FORMAT, p2i((void *)PENDING_EXCEPTION));
+ PENDING_EXCEPTION->print();
+ }
+ Handle nested_exception(THREAD, PENDING_EXCEPTION);
+ CLEAR_PENDING_EXCEPTION;
+ THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception)
+ }
+}
+
+void LinkResolver::resolve_invokedynamic(CallInfo& result, const constantPoolHandle& pool, int index, TRAPS) {
+ Symbol* method_name = pool->name_ref_at(index);
+ Symbol* method_signature = pool->signature_ref_at(index);
+ Klass* current_klass = pool->pool_holder();
+
+ // Resolve the bootstrap specifier (BSM + optional arguments).
+ Handle bootstrap_specifier;
+ // Check if CallSite has been bound already:
+ ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index);
+ if (cpce->is_f1_null()) {
+ int pool_index = cpce->constant_pool_index();
+ oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, THREAD);
+ wrap_invokedynamic_exception(CHECK);
+ assert(bsm_info != NULL, "");
+ // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic.
+ bootstrap_specifier = Handle(THREAD, bsm_info);
+ }
+ if (!cpce->is_f1_null()) {
+ methodHandle method( THREAD, cpce->f1_as_method());
+ Handle appendix( THREAD, cpce->appendix_if_resolved(pool));
+ Handle method_type(THREAD, cpce->method_type_if_resolved(pool));
+ result.set_handle(method, appendix, method_type, THREAD);
+ wrap_invokedynamic_exception(CHECK);
+ return;
+ }
+
+ if (TraceMethodHandles) {
+ ResourceMark rm(THREAD);
+ tty->print_cr("resolve_invokedynamic #%d %s %s in %s",
+ ConstantPool::decode_invokedynamic_index(index),
+ method_name->as_C_string(), method_signature->as_C_string(),
+ current_klass->name()->as_C_string());
+ tty->print(" BSM info: "); bootstrap_specifier->print();
+ }
+
+ resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK);
+}
+
+void LinkResolver::resolve_dynamic_call(CallInfo& result,
+ Handle bootstrap_specifier,
+ Symbol* method_name, Symbol* method_signature,
+ Klass* current_klass,
+ TRAPS) {
+ // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...)
+ // The appendix argument is likely to be a freshly-created CallSite.
+ Handle resolved_appendix;
+ Handle resolved_method_type;
+ methodHandle resolved_method =
+ SystemDictionary::find_dynamic_call_site_invoker(current_klass,
+ bootstrap_specifier,
+ method_name, method_signature,
+ &resolved_appendix,
+ &resolved_method_type,
+ THREAD);
+ wrap_invokedynamic_exception(CHECK);
+ result.set_handle(resolved_method, resolved_appendix, resolved_method_type, THREAD);
+ wrap_invokedynamic_exception(CHECK);
+}