src/share/vm/interpreter/linkResolver.cpp

Tue, 23 Nov 2010 13:22:55 -0800

author
stefank
date
Tue, 23 Nov 2010 13:22:55 -0800
changeset 2314
f95d63e2154a
parent 2138
d5d065957597
child 2497
3582bf76420e
permissions
-rw-r--r--

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

duke@435 1 /*
iveresov@2138 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
stefank@2314 25 #include "precompiled.hpp"
stefank@2314 26 #include "classfile/systemDictionary.hpp"
stefank@2314 27 #include "classfile/vmSymbols.hpp"
stefank@2314 28 #include "compiler/compileBroker.hpp"
stefank@2314 29 #include "gc_interface/collectedHeap.inline.hpp"
stefank@2314 30 #include "interpreter/bytecode.hpp"
stefank@2314 31 #include "interpreter/interpreterRuntime.hpp"
stefank@2314 32 #include "interpreter/linkResolver.hpp"
stefank@2314 33 #include "memory/resourceArea.hpp"
stefank@2314 34 #include "memory/universe.inline.hpp"
stefank@2314 35 #include "oops/instanceKlass.hpp"
stefank@2314 36 #include "oops/objArrayOop.hpp"
stefank@2314 37 #include "prims/methodHandles.hpp"
stefank@2314 38 #include "prims/nativeLookup.hpp"
stefank@2314 39 #include "runtime/compilationPolicy.hpp"
stefank@2314 40 #include "runtime/fieldDescriptor.hpp"
stefank@2314 41 #include "runtime/frame.inline.hpp"
stefank@2314 42 #include "runtime/handles.inline.hpp"
stefank@2314 43 #include "runtime/reflection.hpp"
stefank@2314 44 #include "runtime/signature.hpp"
stefank@2314 45 #include "runtime/vmThread.hpp"
stefank@2314 46 #ifdef TARGET_OS_FAMILY_linux
stefank@2314 47 # include "thread_linux.inline.hpp"
stefank@2314 48 #endif
stefank@2314 49 #ifdef TARGET_OS_FAMILY_solaris
stefank@2314 50 # include "thread_solaris.inline.hpp"
stefank@2314 51 #endif
stefank@2314 52 #ifdef TARGET_OS_FAMILY_windows
stefank@2314 53 # include "thread_windows.inline.hpp"
stefank@2314 54 #endif
duke@435 55
duke@435 56 //------------------------------------------------------------------------------------------------------------------------
duke@435 57 // Implementation of FieldAccessInfo
duke@435 58
duke@435 59 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset,
duke@435 60 BasicType field_type, AccessFlags access_flags) {
duke@435 61 _klass = klass;
duke@435 62 _name = name;
duke@435 63 _field_index = field_index;
duke@435 64 _field_offset = field_offset;
duke@435 65 _field_type = field_type;
duke@435 66 _access_flags = access_flags;
duke@435 67 }
duke@435 68
duke@435 69
duke@435 70 //------------------------------------------------------------------------------------------------------------------------
duke@435 71 // Implementation of CallInfo
duke@435 72
duke@435 73
duke@435 74 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) {
duke@435 75 int vtable_index = methodOopDesc::nonvirtual_vtable_index;
duke@435 76 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK);
duke@435 77 }
duke@435 78
duke@435 79
duke@435 80 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) {
duke@435 81 // This is only called for interface methods. If the resolved_method
duke@435 82 // comes from java/lang/Object, it can be the subject of a virtual call, so
duke@435 83 // we should pick the vtable index from the resolved method.
duke@435 84 // Other than that case, there is no valid vtable index to specify.
duke@435 85 int vtable_index = methodOopDesc::invalid_vtable_index;
never@1577 86 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) {
duke@435 87 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check");
duke@435 88 vtable_index = resolved_method->vtable_index();
duke@435 89 }
duke@435 90 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
duke@435 91 }
duke@435 92
duke@435 93 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
duke@435 94 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index");
duke@435 95 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
duke@435 96 }
duke@435 97
jrose@2015 98 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) {
jrose@2015 99 assert(resolved_method->is_method_handle_invoke(), "");
jrose@2015 100 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
jrose@2015 101 assert(resolved_klass == resolved_method->method_holder(), "");
jrose@2015 102 int vtable_index = methodOopDesc::nonvirtual_vtable_index;
jrose@2015 103 assert(resolved_method->vtable_index() == vtable_index, "");
jrose@2015 104 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK);
jrose@2015 105 }
jrose@2015 106
duke@435 107 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
duke@435 108 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond");
duke@435 109 _resolved_klass = resolved_klass;
duke@435 110 _selected_klass = selected_klass;
duke@435 111 _resolved_method = resolved_method;
duke@435 112 _selected_method = selected_method;
duke@435 113 _vtable_index = vtable_index;
iveresov@2138 114 if (CompilationPolicy::must_be_compiled(selected_method)) {
twisti@1570 115 // This path is unusual, mostly used by the '-Xcomp' stress test mode.
twisti@1570 116
iveresov@2138 117 // Note: with several active threads, the must_be_compiled may be true
iveresov@2138 118 // while can_be_compiled is false; remove assert
iveresov@2138 119 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile");
duke@435 120 if (THREAD->is_Compiler_thread()) {
duke@435 121 // don't force compilation, resolve was on behalf of compiler
duke@435 122 return;
duke@435 123 }
twisti@1570 124 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) {
twisti@1570 125 // 'is_not_initialized' means not only '!is_initialized', but also that
twisti@1570 126 // initialization has not been started yet ('!being_initialized')
twisti@1570 127 // Do not force compilation of methods in uninitialized classes.
twisti@1570 128 // Note that doing this would throw an assert later,
twisti@1570 129 // in CompileBroker::compile_method.
twisti@1570 130 // We sometimes use the link resolver to do reflective lookups
twisti@1570 131 // even before classes are initialized.
twisti@1570 132 return;
twisti@1570 133 }
duke@435 134 CompileBroker::compile_method(selected_method, InvocationEntryBci,
iveresov@2138 135 CompLevel_initial_compile,
iveresov@2138 136 methodHandle(), 0, "must_be_compiled", CHECK);
duke@435 137 }
duke@435 138 }
duke@435 139
duke@435 140
duke@435 141 //------------------------------------------------------------------------------------------------------------------------
duke@435 142 // Klass resolution
duke@435 143
duke@435 144 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) {
duke@435 145 if (!Reflection::verify_class_access(ref_klass->as_klassOop(),
duke@435 146 sel_klass->as_klassOop(),
duke@435 147 true)) {
duke@435 148 ResourceMark rm(THREAD);
duke@435 149 Exceptions::fthrow(
duke@435 150 THREAD_AND_LOCATION,
duke@435 151 vmSymbolHandles::java_lang_IllegalAccessError(),
duke@435 152 "tried to access class %s from class %s",
duke@435 153 sel_klass->external_name(),
duke@435 154 ref_klass->external_name()
duke@435 155 );
duke@435 156 return;
duke@435 157 }
duke@435 158 }
duke@435 159
duke@435 160 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 161 klassOop result_oop = pool->klass_ref_at(index, CHECK);
duke@435 162 result = KlassHandle(THREAD, result_oop);
duke@435 163 }
duke@435 164
duke@435 165 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 166 klassOop result_oop =
duke@435 167 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK);
duke@435 168 result = KlassHandle(THREAD, result_oop);
duke@435 169 }
duke@435 170
duke@435 171
duke@435 172 //------------------------------------------------------------------------------------------------------------------------
duke@435 173 // Method resolution
duke@435 174 //
duke@435 175 // According to JVM spec. $5.4.3c & $5.4.3d
duke@435 176
duke@435 177 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 178 methodOop result_oop = klass->uncached_lookup_method(name(), signature());
jrose@1862 179 if (EnableMethodHandles && result_oop != NULL) {
jrose@1862 180 switch (result_oop->intrinsic_id()) {
jrose@1862 181 case vmIntrinsics::_invokeExact:
jrose@1862 182 case vmIntrinsics::_invokeGeneric:
jrose@1862 183 case vmIntrinsics::_invokeDynamic:
jrose@1862 184 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method.
jrose@1862 185 return;
jrose@1862 186 }
jrose@1862 187 }
duke@435 188 result = methodHandle(THREAD, result_oop);
duke@435 189 }
duke@435 190
duke@435 191 // returns first instance method
duke@435 192 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 193 methodOop result_oop = klass->uncached_lookup_method(name(), signature());
duke@435 194 result = methodHandle(THREAD, result_oop);
duke@435 195 while (!result.is_null() && result->is_static()) {
duke@435 196 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super());
duke@435 197 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature()));
duke@435 198 }
duke@435 199 }
duke@435 200
duke@435 201
duke@435 202 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 203 ResourceMark rm(THREAD);
duke@435 204 klassVtable *vt = instanceKlass::cast(klass())->vtable();
duke@435 205 return vt->index_of_miranda(name(), signature());
duke@435 206 }
duke@435 207
duke@435 208 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 209 instanceKlass *ik = instanceKlass::cast(klass());
duke@435 210 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature()));
duke@435 211 }
duke@435 212
jrose@1863 213 void LinkResolver::lookup_implicit_method(methodHandle& result,
jrose@1863 214 KlassHandle klass, symbolHandle name, symbolHandle signature,
jrose@1863 215 KlassHandle current_klass,
jrose@1863 216 TRAPS) {
jrose@2015 217 if (EnableMethodHandles &&
jrose@1862 218 klass() == SystemDictionary::MethodHandle_klass() &&
jrose@1862 219 methodOopDesc::is_method_handle_invoke_name(name())) {
jrose@2015 220 if (!MethodHandles::enabled()) {
jrose@2015 221 // Make sure the Java part of the runtime has been booted up.
jrose@2015 222 klassOop natives = SystemDictionary::MethodHandleNatives_klass();
jrose@2015 223 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) {
jrose@2015 224 SystemDictionary::resolve_or_fail(vmSymbolHandles::sun_dyn_MethodHandleNatives(),
jrose@2015 225 Handle(),
jrose@2015 226 Handle(),
jrose@2015 227 true,
jrose@2015 228 CHECK);
jrose@2015 229 }
jrose@2015 230 }
jrose@1862 231 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name,
jrose@1862 232 signature,
jrose@1863 233 current_klass,
jrose@1145 234 CHECK);
jrose@1145 235 if (result_oop != NULL) {
jrose@1145 236 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent");
jrose@1145 237 result = methodHandle(THREAD, result_oop);
jrose@1145 238 }
jrose@1145 239 }
jrose@1145 240 }
jrose@1145 241
duke@435 242 void LinkResolver::check_method_accessability(KlassHandle ref_klass,
duke@435 243 KlassHandle resolved_klass,
duke@435 244 KlassHandle sel_klass,
duke@435 245 methodHandle sel_method,
duke@435 246 TRAPS) {
duke@435 247
duke@435 248 AccessFlags flags = sel_method->access_flags();
duke@435 249
duke@435 250 // Special case: arrays always override "clone". JVMS 2.15.
duke@435 251 // If the resolved klass is an array class, and the declaring class
duke@435 252 // is java.lang.Object and the method is "clone", set the flags
duke@435 253 // to public.
duke@435 254 //
duke@435 255 // We'll check for the method name first, as that's most likely
duke@435 256 // to be false (so we'll short-circuit out of these tests).
duke@435 257 if (sel_method->name() == vmSymbols::clone_name() &&
never@1577 258 sel_klass() == SystemDictionary::Object_klass() &&
duke@435 259 resolved_klass->oop_is_array()) {
duke@435 260 // We need to change "protected" to "public".
duke@435 261 assert(flags.is_protected(), "clone not protected?");
duke@435 262 jint new_flags = flags.as_int();
duke@435 263 new_flags = new_flags & (~JVM_ACC_PROTECTED);
duke@435 264 new_flags = new_flags | JVM_ACC_PUBLIC;
duke@435 265 flags.set_flags(new_flags);
duke@435 266 }
duke@435 267
duke@435 268 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
duke@435 269 resolved_klass->as_klassOop(),
duke@435 270 sel_klass->as_klassOop(),
duke@435 271 flags,
duke@435 272 true)) {
duke@435 273 ResourceMark rm(THREAD);
duke@435 274 Exceptions::fthrow(
duke@435 275 THREAD_AND_LOCATION,
duke@435 276 vmSymbolHandles::java_lang_IllegalAccessError(),
duke@435 277 "tried to access method %s.%s%s from class %s",
duke@435 278 sel_klass->external_name(),
duke@435 279 sel_method->name()->as_C_string(),
duke@435 280 sel_method->signature()->as_C_string(),
duke@435 281 ref_klass->external_name()
duke@435 282 );
duke@435 283 return;
duke@435 284 }
duke@435 285 }
duke@435 286
duke@435 287 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass,
duke@435 288 constantPoolHandle pool, int index, TRAPS) {
duke@435 289
duke@435 290 // resolve klass
duke@435 291 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 292
duke@435 293 symbolHandle method_name (THREAD, pool->name_ref_at(index));
duke@435 294 symbolHandle method_signature (THREAD, pool->signature_ref_at(index));
duke@435 295 KlassHandle current_klass(THREAD, pool->pool_holder());
duke@435 296
duke@435 297 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
duke@435 298 }
duke@435 299
twisti@1570 300 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
twisti@1570 301 // The class is java.dyn.MethodHandle
twisti@1570 302 resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
twisti@1570 303
jrose@1862 304 symbolHandle method_name = vmSymbolHandles::invokeExact_name();
twisti@1570 305
twisti@1570 306 symbolHandle method_signature(THREAD, pool->signature_ref_at(index));
twisti@1570 307 KlassHandle current_klass (THREAD, pool->pool_holder());
twisti@1570 308
twisti@1570 309 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
twisti@1570 310 }
twisti@1570 311
duke@435 312 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
duke@435 313
duke@435 314 // resolve klass
duke@435 315 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 316 symbolHandle method_name (THREAD, pool->name_ref_at(index));
duke@435 317 symbolHandle method_signature (THREAD, pool->signature_ref_at(index));
duke@435 318 KlassHandle current_klass(THREAD, pool->pool_holder());
duke@435 319
duke@435 320 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
duke@435 321 }
duke@435 322
duke@435 323
duke@435 324 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass,
duke@435 325 symbolHandle method_name, symbolHandle method_signature,
duke@435 326 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 327
duke@435 328 // 1. check if klass is not interface
duke@435 329 if (resolved_klass->is_interface()) {
duke@435 330 char buf[200];
duke@435 331 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name());
duke@435 332 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 333 }
duke@435 334
duke@435 335 // 2. lookup method in resolved klass and its super klasses
duke@435 336 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 337
duke@435 338 if (resolved_method.is_null()) { // not found in the class hierarchy
duke@435 339 // 3. lookup method in all the interfaces implemented by the resolved klass
duke@435 340 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 341
duke@435 342 if (resolved_method.is_null()) {
jrose@1145 343 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...)
jrose@1863 344 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK);
jrose@1145 345 }
jrose@1145 346
jrose@1145 347 if (resolved_method.is_null()) {
duke@435 348 // 4. method lookup failed
duke@435 349 ResourceMark rm(THREAD);
duke@435 350 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
duke@435 351 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 352 method_name(),
duke@435 353 method_signature()));
duke@435 354 }
duke@435 355 }
duke@435 356
duke@435 357 // 5. check if method is concrete
duke@435 358 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) {
duke@435 359 ResourceMark rm(THREAD);
duke@435 360 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 361 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 362 method_name(),
duke@435 363 method_signature()));
duke@435 364 }
duke@435 365
duke@435 366 // 6. access checks, access checking may be turned off when calling from within the VM.
duke@435 367 if (check_access) {
duke@435 368 assert(current_klass.not_null() , "current_klass should not be null");
duke@435 369
duke@435 370 // check if method can be accessed by the referring class
duke@435 371 check_method_accessability(current_klass,
duke@435 372 resolved_klass,
duke@435 373 KlassHandle(THREAD, resolved_method->method_holder()),
duke@435 374 resolved_method,
duke@435 375 CHECK);
duke@435 376
duke@435 377 // check loader constraints
duke@435 378 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
duke@435 379 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
duke@435 380 {
duke@435 381 ResourceMark rm(THREAD);
duke@435 382 char* failed_type_name =
duke@435 383 SystemDictionary::check_signature_loaders(method_signature, loader,
duke@435 384 class_loader, true, CHECK);
duke@435 385 if (failed_type_name != NULL) {
duke@435 386 const char* msg = "loader constraint violation: when resolving method"
duke@435 387 " \"%s\" the class loader (instance of %s) of the current class, %s,"
duke@435 388 " and the class loader (instance of %s) for resolved class, %s, have"
duke@435 389 " different Class objects for the type %s used in the signature";
duke@435 390 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature());
duke@435 391 const char* loader1 = SystemDictionary::loader_name(loader());
duke@435 392 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
duke@435 393 const char* loader2 = SystemDictionary::loader_name(class_loader());
duke@435 394 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
duke@435 395 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
duke@435 396 strlen(current) + strlen(loader2) + strlen(resolved) +
duke@435 397 strlen(failed_type_name);
duke@435 398 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
duke@435 399 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
duke@435 400 resolved, failed_type_name);
duke@435 401 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
duke@435 402 }
duke@435 403 }
duke@435 404 }
duke@435 405 }
duke@435 406
duke@435 407 void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
duke@435 408 KlassHandle resolved_klass,
duke@435 409 symbolHandle method_name,
duke@435 410 symbolHandle method_signature,
duke@435 411 KlassHandle current_klass,
duke@435 412 bool check_access, TRAPS) {
duke@435 413
duke@435 414 // check if klass is interface
duke@435 415 if (!resolved_klass->is_interface()) {
duke@435 416 char buf[200];
duke@435 417 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name());
duke@435 418 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 419 }
duke@435 420
duke@435 421 // lookup method in this interface or its super, java.lang.Object
duke@435 422 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 423
duke@435 424 if (resolved_method.is_null()) {
duke@435 425 // lookup method in all the super-interfaces
duke@435 426 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 427 if (resolved_method.is_null()) {
duke@435 428 // no method found
duke@435 429 ResourceMark rm(THREAD);
duke@435 430 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
duke@435 431 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 432 method_name(),
duke@435 433 method_signature()));
duke@435 434 }
duke@435 435 }
duke@435 436
duke@435 437 if (check_access) {
duke@435 438 HandleMark hm(THREAD);
duke@435 439 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
duke@435 440 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
duke@435 441 {
duke@435 442 ResourceMark rm(THREAD);
duke@435 443 char* failed_type_name =
duke@435 444 SystemDictionary::check_signature_loaders(method_signature, loader,
duke@435 445 class_loader, true, CHECK);
duke@435 446 if (failed_type_name != NULL) {
duke@435 447 const char* msg = "loader constraint violation: when resolving "
duke@435 448 "interface method \"%s\" the class loader (instance of %s) of the "
duke@435 449 "current class, %s, and the class loader (instance of %s) for "
duke@435 450 "resolved class, %s, have different Class objects for the type %s "
duke@435 451 "used in the signature";
duke@435 452 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature());
duke@435 453 const char* loader1 = SystemDictionary::loader_name(loader());
duke@435 454 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
duke@435 455 const char* loader2 = SystemDictionary::loader_name(class_loader());
duke@435 456 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
duke@435 457 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
duke@435 458 strlen(current) + strlen(loader2) + strlen(resolved) +
duke@435 459 strlen(failed_type_name);
duke@435 460 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
duke@435 461 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
duke@435 462 resolved, failed_type_name);
duke@435 463 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
duke@435 464 }
duke@435 465 }
duke@435 466 }
duke@435 467 }
duke@435 468
duke@435 469 //------------------------------------------------------------------------------------------------------------------------
duke@435 470 // Field resolution
duke@435 471
duke@435 472 void LinkResolver::check_field_accessability(KlassHandle ref_klass,
duke@435 473 KlassHandle resolved_klass,
duke@435 474 KlassHandle sel_klass,
duke@435 475 fieldDescriptor& fd,
duke@435 476 TRAPS) {
duke@435 477 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
duke@435 478 resolved_klass->as_klassOop(),
duke@435 479 sel_klass->as_klassOop(),
duke@435 480 fd.access_flags(),
duke@435 481 true)) {
duke@435 482 ResourceMark rm(THREAD);
duke@435 483 Exceptions::fthrow(
duke@435 484 THREAD_AND_LOCATION,
duke@435 485 vmSymbolHandles::java_lang_IllegalAccessError(),
duke@435 486 "tried to access field %s.%s from class %s",
duke@435 487 sel_klass->external_name(),
duke@435 488 fd.name()->as_C_string(),
duke@435 489 ref_klass->external_name()
duke@435 490 );
duke@435 491 return;
duke@435 492 }
duke@435 493 }
duke@435 494
duke@435 495 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) {
duke@435 496 resolve_field(result, pool, index, byte, check_only, true, CHECK);
duke@435 497 }
duke@435 498
duke@435 499 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) {
duke@435 500 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
duke@435 501 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode");
duke@435 502
duke@435 503 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
duke@435 504 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic);
duke@435 505
duke@435 506 // resolve specified klass
duke@435 507 KlassHandle resolved_klass;
duke@435 508 if (update_pool) {
duke@435 509 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 510 } else {
duke@435 511 resolve_klass_no_update(resolved_klass, pool, index, CHECK);
duke@435 512 }
duke@435 513 // Load these early in case the resolve of the containing klass fails
duke@435 514 symbolOop field = pool->name_ref_at(index);
duke@435 515 symbolHandle field_h (THREAD, field); // preserve in case we need the name
duke@435 516 symbolOop sig = pool->signature_ref_at(index);
duke@435 517 // Check if there's a resolved klass containing the field
duke@435 518 if( resolved_klass.is_null() ) {
duke@435 519 ResourceMark rm(THREAD);
duke@435 520 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
duke@435 521 }
duke@435 522
duke@435 523 // Resolve instance field
duke@435 524 fieldDescriptor fd; // find_field initializes fd if found
duke@435 525 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd));
duke@435 526 // check if field exists; i.e., if a klass containing the field def has been selected
duke@435 527 if (sel_klass.is_null()){
duke@435 528 ResourceMark rm(THREAD);
duke@435 529 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
duke@435 530 }
duke@435 531
duke@435 532 // check access
duke@435 533 KlassHandle ref_klass(THREAD, pool->pool_holder());
duke@435 534 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK);
duke@435 535
duke@435 536 // check for errors
duke@435 537 if (is_static != fd.is_static()) {
duke@435 538 char msg[200];
duke@435 539 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", Klass::cast(resolved_klass())->external_name(), fd.name()->as_C_string());
duke@435 540 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg);
duke@435 541 }
duke@435 542
duke@435 543 // Final fields can only be accessed from its own class.
duke@435 544 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) {
duke@435 545 THROW(vmSymbols::java_lang_IllegalAccessError());
duke@435 546 }
duke@435 547
duke@435 548 // initialize resolved_klass if necessary
duke@435 549 // note 1: the klass which declared the field must be initialized (i.e, sel_klass)
duke@435 550 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99)
duke@435 551 //
duke@435 552 // note 2: we don't want to force initialization if we are just checking
duke@435 553 // if the field access is legal; e.g., during compilation
duke@435 554 if (is_static && !check_only) {
duke@435 555 sel_klass->initialize(CHECK);
duke@435 556 }
duke@435 557
duke@435 558 {
duke@435 559 HandleMark hm(THREAD);
duke@435 560 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader());
duke@435 561 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader());
duke@435 562 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index));
duke@435 563 {
duke@435 564 ResourceMark rm(THREAD);
duke@435 565 char* failed_type_name =
duke@435 566 SystemDictionary::check_signature_loaders(signature_ref,
duke@435 567 ref_loader, sel_loader,
duke@435 568 false,
duke@435 569 CHECK);
duke@435 570 if (failed_type_name != NULL) {
duke@435 571 const char* msg = "loader constraint violation: when resolving field"
duke@435 572 " \"%s\" the class loader (instance of %s) of the referring class, "
duke@435 573 "%s, and the class loader (instance of %s) for the field's resolved "
duke@435 574 "type, %s, have different Class objects for that type";
duke@435 575 char* field_name = field_h()->as_C_string();
duke@435 576 const char* loader1 = SystemDictionary::loader_name(ref_loader());
duke@435 577 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string();
duke@435 578 const char* loader2 = SystemDictionary::loader_name(sel_loader());
duke@435 579 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) +
duke@435 580 strlen(sel) + strlen(loader2) + strlen(failed_type_name);
duke@435 581 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
duke@435 582 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2,
duke@435 583 failed_type_name);
duke@435 584 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
duke@435 585 }
duke@435 586 }
duke@435 587 }
duke@435 588
duke@435 589 // return information. note that the klass is set to the actual klass containing the
duke@435 590 // field, otherwise access of static fields in superclasses will not work.
duke@435 591 KlassHandle holder (THREAD, fd.field_holder());
duke@435 592 symbolHandle name (THREAD, fd.name());
duke@435 593 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags());
duke@435 594 }
duke@435 595
duke@435 596
duke@435 597 //------------------------------------------------------------------------------------------------------------------------
duke@435 598 // Invoke resolution
duke@435 599 //
duke@435 600 // Naming conventions:
duke@435 601 //
duke@435 602 // resolved_method the specified method (i.e., static receiver specified via constant pool index)
duke@435 603 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class)
duke@435 604 // resolved_klass the specified klass (i.e., specified via constant pool index)
duke@435 605 // recv_klass the receiver klass
duke@435 606
duke@435 607
duke@435 608 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name,
duke@435 609 symbolHandle method_signature, KlassHandle current_klass,
duke@435 610 bool check_access, bool initialize_class, TRAPS) {
duke@435 611 methodHandle resolved_method;
duke@435 612 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 613 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder()));
duke@435 614
duke@435 615 // Initialize klass (this should only happen if everything is ok)
duke@435 616 if (initialize_class && resolved_klass->should_be_initialized()) {
duke@435 617 resolved_klass->initialize(CHECK);
duke@435 618 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 619 }
duke@435 620
duke@435 621 // setup result
duke@435 622 result.set_static(resolved_klass, resolved_method, CHECK);
duke@435 623 }
duke@435 624
duke@435 625 // throws linktime exceptions
duke@435 626 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass,
duke@435 627 symbolHandle method_name, symbolHandle method_signature,
duke@435 628 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 629
duke@435 630 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 631 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
duke@435 632
duke@435 633 // check if static
duke@435 634 if (!resolved_method->is_static()) {
duke@435 635 char buf[200];
duke@435 636 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 637 resolved_method->name(),
duke@435 638 resolved_method->signature()));
duke@435 639 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 640 }
duke@435 641 }
duke@435 642
duke@435 643
duke@435 644 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name,
duke@435 645 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 646 methodHandle resolved_method;
duke@435 647 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 648 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK);
duke@435 649 }
duke@435 650
duke@435 651 // throws linktime exceptions
duke@435 652 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass,
duke@435 653 symbolHandle method_name, symbolHandle method_signature,
duke@435 654 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 655
duke@435 656 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 657
duke@435 658 // check if method name is <init>, that it is found in same klass as static type
duke@435 659 if (resolved_method->name() == vmSymbols::object_initializer_name() &&
duke@435 660 resolved_method->method_holder() != resolved_klass()) {
duke@435 661 ResourceMark rm(THREAD);
duke@435 662 Exceptions::fthrow(
duke@435 663 THREAD_AND_LOCATION,
duke@435 664 vmSymbolHandles::java_lang_NoSuchMethodError(),
duke@435 665 "%s: method %s%s not found",
duke@435 666 resolved_klass->external_name(),
duke@435 667 resolved_method->name()->as_C_string(),
duke@435 668 resolved_method->signature()->as_C_string()
duke@435 669 );
duke@435 670 return;
duke@435 671 }
duke@435 672
duke@435 673 // check if not static
duke@435 674 if (resolved_method->is_static()) {
duke@435 675 char buf[200];
duke@435 676 jio_snprintf(buf, sizeof(buf),
duke@435 677 "Expecting non-static method %s",
duke@435 678 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 679 resolved_method->name(),
duke@435 680 resolved_method->signature()));
duke@435 681 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 682 }
duke@435 683 }
duke@435 684
duke@435 685 // throws runtime exceptions
duke@435 686 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
duke@435 687 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 688
duke@435 689 // resolved method is selected method unless we have an old-style lookup
duke@435 690 methodHandle sel_method(THREAD, resolved_method());
duke@435 691
duke@435 692 // check if this is an old-style super call and do a new lookup if so
duke@435 693 { KlassHandle method_klass = KlassHandle(THREAD,
duke@435 694 resolved_method->method_holder());
duke@435 695
duke@435 696 if (check_access &&
duke@435 697 // a) check if ACC_SUPER flag is set for the current class
duke@435 698 current_klass->is_super() &&
duke@435 699 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!)
duke@435 700 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() &&
duke@435 701 // c) check if the method is not <init>
duke@435 702 resolved_method->name() != vmSymbols::object_initializer_name()) {
duke@435 703 // Lookup super method
duke@435 704 KlassHandle super_klass(THREAD, current_klass->super());
duke@435 705 lookup_instance_method_in_klasses(sel_method, super_klass,
duke@435 706 symbolHandle(THREAD, resolved_method->name()),
duke@435 707 symbolHandle(THREAD, resolved_method->signature()), CHECK);
duke@435 708 // check if found
duke@435 709 if (sel_method.is_null()) {
duke@435 710 ResourceMark rm(THREAD);
duke@435 711 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 712 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 713 resolved_method->name(),
duke@435 714 resolved_method->signature()));
duke@435 715 }
duke@435 716 }
duke@435 717 }
duke@435 718
duke@435 719 // check if not static
duke@435 720 if (sel_method->is_static()) {
duke@435 721 char buf[200];
duke@435 722 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 723 resolved_method->name(),
duke@435 724 resolved_method->signature()));
duke@435 725 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 726 }
duke@435 727
duke@435 728 // check if abstract
duke@435 729 if (sel_method->is_abstract()) {
duke@435 730 ResourceMark rm(THREAD);
duke@435 731 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 732 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 733 sel_method->name(),
duke@435 734 sel_method->signature()));
duke@435 735 }
duke@435 736
duke@435 737 // setup result
duke@435 738 result.set_static(resolved_klass, sel_method, CHECK);
duke@435 739 }
duke@435 740
duke@435 741 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass,
duke@435 742 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass,
duke@435 743 bool check_access, bool check_null_and_abstract, TRAPS) {
duke@435 744 methodHandle resolved_method;
duke@435 745 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 746 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK);
duke@435 747 }
duke@435 748
duke@435 749 // throws linktime exceptions
duke@435 750 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass,
duke@435 751 symbolHandle method_name, symbolHandle method_signature,
duke@435 752 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 753 // normal method resolution
duke@435 754 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 755
duke@435 756 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
duke@435 757 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
duke@435 758
duke@435 759 // check if not static
duke@435 760 if (resolved_method->is_static()) {
duke@435 761 char buf[200];
duke@435 762 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 763 resolved_method->name(),
duke@435 764 resolved_method->signature()));
duke@435 765 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 766 }
duke@435 767 }
duke@435 768
duke@435 769 // throws runtime exceptions
duke@435 770 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
duke@435 771 methodHandle resolved_method,
duke@435 772 KlassHandle resolved_klass,
duke@435 773 Handle recv,
duke@435 774 KlassHandle recv_klass,
duke@435 775 bool check_null_and_abstract,
duke@435 776 TRAPS) {
duke@435 777
duke@435 778 // setup default return values
duke@435 779 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@435 780 methodHandle selected_method;
duke@435 781
duke@435 782 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop");
duke@435 783
duke@435 784 // runtime method resolution
duke@435 785 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists
duke@435 786 THROW(vmSymbols::java_lang_NullPointerException());
duke@435 787 }
duke@435 788
duke@435 789 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
duke@435 790 // has not been rewritten, and the vtable initialized.
duke@435 791 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
duke@435 792
duke@435 793 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
duke@435 794 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since
duke@435 795 // a missing receiver might result in a bogus lookup.
duke@435 796 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
duke@435 797
duke@435 798 // do lookup based on receiver klass using the vtable index
duke@435 799 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method
duke@435 800 vtable_index = vtable_index_of_miranda_method(resolved_klass,
duke@435 801 symbolHandle(THREAD, resolved_method->name()),
duke@435 802 symbolHandle(THREAD, resolved_method->signature()), CHECK);
duke@435 803 assert(vtable_index >= 0 , "we should have valid vtable index at this point");
duke@435 804
duke@435 805 instanceKlass* inst = instanceKlass::cast(recv_klass());
duke@435 806 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
duke@435 807 } else {
duke@435 808 // at this point we are sure that resolved_method is virtual and not
duke@435 809 // a miranda method; therefore, it must have a valid vtable index.
duke@435 810 vtable_index = resolved_method->vtable_index();
duke@435 811 // We could get a negative vtable_index for final methods,
duke@435 812 // because as an optimization they are they are never put in the vtable,
duke@435 813 // unless they override an existing method.
duke@435 814 // If we do get a negative, it means the resolved method is the the selected
duke@435 815 // method, and it can never be changed by an override.
duke@435 816 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
duke@435 817 assert(resolved_method->can_be_statically_bound(), "cannot override this method");
duke@435 818 selected_method = resolved_method;
duke@435 819 } else {
duke@435 820 // recv_klass might be an arrayKlassOop but all vtables start at
duke@435 821 // the same place. The cast is to avoid virtual call and assertion.
duke@435 822 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part();
duke@435 823 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
duke@435 824 }
duke@435 825 }
duke@435 826
duke@435 827 // check if method exists
duke@435 828 if (selected_method.is_null()) {
duke@435 829 ResourceMark rm(THREAD);
duke@435 830 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 831 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 832 resolved_method->name(),
duke@435 833 resolved_method->signature()));
duke@435 834 }
duke@435 835
duke@435 836 // check if abstract
duke@435 837 if (check_null_and_abstract && selected_method->is_abstract()) {
duke@435 838 ResourceMark rm(THREAD);
duke@435 839 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 840 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 841 selected_method->name(),
duke@435 842 selected_method->signature()));
duke@435 843 }
duke@435 844
duke@435 845 // setup result
duke@435 846 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
duke@435 847 }
duke@435 848
duke@435 849 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass,
duke@435 850 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass,
duke@435 851 bool check_access, bool check_null_and_abstract, TRAPS) {
duke@435 852 methodHandle resolved_method;
duke@435 853 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 854 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK);
duke@435 855 }
duke@435 856
duke@435 857 // throws linktime exceptions
duke@435 858 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name,
duke@435 859 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 860 // normal interface method resolution
duke@435 861 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 862
duke@435 863 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
duke@435 864 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
duke@435 865 }
duke@435 866
duke@435 867 // throws runtime exceptions
duke@435 868 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
duke@435 869 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) {
duke@435 870 // check if receiver exists
duke@435 871 if (check_null_and_abstract && recv.is_null()) {
duke@435 872 THROW(vmSymbols::java_lang_NullPointerException());
duke@435 873 }
duke@435 874
duke@435 875 // check if receiver klass implements the resolved interface
duke@435 876 if (!recv_klass->is_subtype_of(resolved_klass())) {
duke@435 877 char buf[200];
duke@435 878 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
duke@435 879 (Klass::cast(recv_klass()))->external_name(),
duke@435 880 (Klass::cast(resolved_klass()))->external_name());
duke@435 881 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 882 }
duke@435 883 // do lookup based on receiver klass
duke@435 884 methodHandle sel_method;
duke@435 885 lookup_instance_method_in_klasses(sel_method, recv_klass,
duke@435 886 symbolHandle(THREAD, resolved_method->name()),
duke@435 887 symbolHandle(THREAD, resolved_method->signature()), CHECK);
duke@435 888 // check if method exists
duke@435 889 if (sel_method.is_null()) {
duke@435 890 ResourceMark rm(THREAD);
duke@435 891 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 892 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
duke@435 893 resolved_method->name(),
duke@435 894 resolved_method->signature()));
duke@435 895 }
duke@435 896 // check if public
duke@435 897 if (!sel_method->is_public()) {
duke@435 898 ResourceMark rm(THREAD);
duke@435 899 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(),
duke@435 900 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
duke@435 901 sel_method->name(),
duke@435 902 sel_method->signature()));
duke@435 903 }
duke@435 904 // check if abstract
duke@435 905 if (check_null_and_abstract && sel_method->is_abstract()) {
duke@435 906 ResourceMark rm(THREAD);
duke@435 907 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 908 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
duke@435 909 sel_method->name(),
duke@435 910 sel_method->signature()));
duke@435 911 }
duke@435 912 // setup result
duke@435 913 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK);
duke@435 914 }
duke@435 915
duke@435 916
duke@435 917 methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
duke@435 918 KlassHandle resolved_klass,
duke@435 919 symbolHandle method_name,
duke@435 920 symbolHandle method_signature,
duke@435 921 KlassHandle current_klass,
duke@435 922 bool check_access) {
duke@435 923 EXCEPTION_MARK;
duke@435 924 methodHandle method_result;
duke@435 925 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
duke@435 926 if (HAS_PENDING_EXCEPTION) {
duke@435 927 CLEAR_PENDING_EXCEPTION;
duke@435 928 return methodHandle();
duke@435 929 } else {
duke@435 930 return method_result;
duke@435 931 }
duke@435 932 }
duke@435 933
duke@435 934 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
duke@435 935 KlassHandle resolved_klass,
duke@435 936 symbolHandle method_name,
duke@435 937 symbolHandle method_signature,
duke@435 938 KlassHandle current_klass,
duke@435 939 bool check_access) {
duke@435 940 EXCEPTION_MARK;
duke@435 941 methodHandle method_result;
duke@435 942 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
duke@435 943 if (HAS_PENDING_EXCEPTION) {
duke@435 944 CLEAR_PENDING_EXCEPTION;
duke@435 945 return methodHandle();
duke@435 946 } else {
duke@435 947 return method_result;
duke@435 948 }
duke@435 949 }
duke@435 950
duke@435 951 methodHandle LinkResolver::resolve_virtual_call_or_null(
duke@435 952 KlassHandle receiver_klass,
duke@435 953 KlassHandle resolved_klass,
duke@435 954 symbolHandle name,
duke@435 955 symbolHandle signature,
duke@435 956 KlassHandle current_klass) {
duke@435 957 EXCEPTION_MARK;
duke@435 958 CallInfo info;
duke@435 959 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 960 if (HAS_PENDING_EXCEPTION) {
duke@435 961 CLEAR_PENDING_EXCEPTION;
duke@435 962 return methodHandle();
duke@435 963 }
duke@435 964 return info.selected_method();
duke@435 965 }
duke@435 966
duke@435 967 methodHandle LinkResolver::resolve_interface_call_or_null(
duke@435 968 KlassHandle receiver_klass,
duke@435 969 KlassHandle resolved_klass,
duke@435 970 symbolHandle name,
duke@435 971 symbolHandle signature,
duke@435 972 KlassHandle current_klass) {
duke@435 973 EXCEPTION_MARK;
duke@435 974 CallInfo info;
duke@435 975 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 976 if (HAS_PENDING_EXCEPTION) {
duke@435 977 CLEAR_PENDING_EXCEPTION;
duke@435 978 return methodHandle();
duke@435 979 }
duke@435 980 return info.selected_method();
duke@435 981 }
duke@435 982
duke@435 983 int LinkResolver::resolve_virtual_vtable_index(
duke@435 984 KlassHandle receiver_klass,
duke@435 985 KlassHandle resolved_klass,
duke@435 986 symbolHandle name,
duke@435 987 symbolHandle signature,
duke@435 988 KlassHandle current_klass) {
duke@435 989 EXCEPTION_MARK;
duke@435 990 CallInfo info;
duke@435 991 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 992 if (HAS_PENDING_EXCEPTION) {
duke@435 993 CLEAR_PENDING_EXCEPTION;
duke@435 994 return methodOopDesc::invalid_vtable_index;
duke@435 995 }
duke@435 996 return info.vtable_index();
duke@435 997 }
duke@435 998
duke@435 999 methodHandle LinkResolver::resolve_static_call_or_null(
duke@435 1000 KlassHandle resolved_klass,
duke@435 1001 symbolHandle name,
duke@435 1002 symbolHandle signature,
duke@435 1003 KlassHandle current_klass) {
duke@435 1004 EXCEPTION_MARK;
duke@435 1005 CallInfo info;
duke@435 1006 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 1007 if (HAS_PENDING_EXCEPTION) {
duke@435 1008 CLEAR_PENDING_EXCEPTION;
duke@435 1009 return methodHandle();
duke@435 1010 }
duke@435 1011 return info.selected_method();
duke@435 1012 }
duke@435 1013
duke@435 1014 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature,
duke@435 1015 KlassHandle current_klass) {
duke@435 1016 EXCEPTION_MARK;
duke@435 1017 CallInfo info;
duke@435 1018 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD);
duke@435 1019 if (HAS_PENDING_EXCEPTION) {
duke@435 1020 CLEAR_PENDING_EXCEPTION;
duke@435 1021 return methodHandle();
duke@435 1022 }
duke@435 1023 return info.selected_method();
duke@435 1024 }
duke@435 1025
duke@435 1026
duke@435 1027
duke@435 1028 //------------------------------------------------------------------------------------------------------------------------
duke@435 1029 // ConstantPool entries
duke@435 1030
duke@435 1031 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
duke@435 1032 switch (byte) {
duke@435 1033 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break;
duke@435 1034 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break;
duke@435 1035 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break;
jrose@1161 1036 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break;
duke@435 1037 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break;
duke@435 1038 }
duke@435 1039 return;
duke@435 1040 }
duke@435 1041
duke@435 1042 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature,
duke@435 1043 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) {
duke@435 1044 // resolve klass
duke@435 1045 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 1046
duke@435 1047 // Get name, signature, and static klass
duke@435 1048 method_name = symbolHandle(THREAD, pool->name_ref_at(index));
duke@435 1049 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index));
duke@435 1050 current_klass = KlassHandle(THREAD, pool->pool_holder());
duke@435 1051 }
duke@435 1052
duke@435 1053
duke@435 1054 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 1055 KlassHandle resolved_klass;
duke@435 1056 symbolHandle method_name;
duke@435 1057 symbolHandle method_signature;
duke@435 1058 KlassHandle current_klass;
duke@435 1059 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 1060 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
duke@435 1061 }
duke@435 1062
duke@435 1063
duke@435 1064 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 1065 KlassHandle resolved_klass;
duke@435 1066 symbolHandle method_name;
duke@435 1067 symbolHandle method_signature;
duke@435 1068 KlassHandle current_klass;
duke@435 1069 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 1070 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
duke@435 1071 }
duke@435 1072
duke@435 1073
duke@435 1074 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv,
duke@435 1075 constantPoolHandle pool, int index,
duke@435 1076 TRAPS) {
duke@435 1077
duke@435 1078 KlassHandle resolved_klass;
duke@435 1079 symbolHandle method_name;
duke@435 1080 symbolHandle method_signature;
duke@435 1081 KlassHandle current_klass;
duke@435 1082 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 1083 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
duke@435 1084 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
duke@435 1085 }
duke@435 1086
duke@435 1087
duke@435 1088 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) {
duke@435 1089 KlassHandle resolved_klass;
duke@435 1090 symbolHandle method_name;
duke@435 1091 symbolHandle method_signature;
duke@435 1092 KlassHandle current_klass;
duke@435 1093 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 1094 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
duke@435 1095 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
duke@435 1096 }
duke@435 1097
jrose@1161 1098
jrose@1161 1099 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) {
jrose@1161 1100 assert(EnableInvokeDynamic, "");
jrose@1161 1101
jrose@1161 1102 // This guy is reached from InterpreterRuntime::resolve_invokedynamic.
jrose@1161 1103
jrose@1161 1104 // At this point, we only need the signature, and can ignore the name.
jrose@1494 1105 symbolHandle method_signature(THREAD, pool->signature_ref_at(raw_index)); // raw_index works directly
jrose@1862 1106 symbolHandle method_name = vmSymbolHandles::invokeExact_name();
jrose@1161 1107 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
jrose@1161 1108
jrose@1862 1109 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...)
jrose@1161 1110 // The extra MH receiver will be inserted into the stack on every call.
jrose@1161 1111 methodHandle resolved_method;
jrose@1863 1112 KlassHandle current_klass(THREAD, pool->pool_holder());
jrose@1863 1113 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK);
jrose@1161 1114 if (resolved_method.is_null()) {
jrose@1161 1115 THROW(vmSymbols::java_lang_InternalError());
jrose@1161 1116 }
jrose@2015 1117 result.set_dynamic(resolved_method, CHECK);
jrose@1161 1118 }
jrose@1161 1119
duke@435 1120 //------------------------------------------------------------------------------------------------------------------------
duke@435 1121 #ifndef PRODUCT
duke@435 1122
duke@435 1123 void FieldAccessInfo::print() {
duke@435 1124 ResourceMark rm;
duke@435 1125 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset());
duke@435 1126 }
duke@435 1127
duke@435 1128 #endif

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