Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/interpreter/linkResolver.cpp@ba764ed4b6f2 (annotated)

src/share/vm/interpreter/linkResolver.cpp

Sun, 13 Apr 2008 17:43:42 -0400

author
coleenp
date
Sun, 13 Apr 2008 17:43:42 -0400
changeset 548
ba764ed4b6f2
parent 435
a61af66fc99e
child 1145
e5b0439ef4ae
permissions
-rw-r--r--

6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold

duke@435 1 /*
duke@435 2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 *
duke@435 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435 20 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435 21 * have any questions.
duke@435 22 *
duke@435 23 */
duke@435 24
duke@435 25 #include "incls/_precompiled.incl"
duke@435 26 #include "incls/_linkResolver.cpp.incl"
duke@435 27
duke@435 28 //------------------------------------------------------------------------------------------------------------------------
duke@435 29 // Implementation of FieldAccessInfo
duke@435 30
duke@435 31 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset,
duke@435 32 BasicType field_type, AccessFlags access_flags) {
duke@435 33 _klass = klass;
duke@435 34 _name = name;
duke@435 35 _field_index = field_index;
duke@435 36 _field_offset = field_offset;
duke@435 37 _field_type = field_type;
duke@435 38 _access_flags = access_flags;
duke@435 39 }
duke@435 40
duke@435 41
duke@435 42 //------------------------------------------------------------------------------------------------------------------------
duke@435 43 // Implementation of CallInfo
duke@435 44
duke@435 45
duke@435 46 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) {
duke@435 47 int vtable_index = methodOopDesc::nonvirtual_vtable_index;
duke@435 48 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK);
duke@435 49 }
duke@435 50
duke@435 51
duke@435 52 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) {
duke@435 53 // This is only called for interface methods. If the resolved_method
duke@435 54 // comes from java/lang/Object, it can be the subject of a virtual call, so
duke@435 55 // we should pick the vtable index from the resolved method.
duke@435 56 // Other than that case, there is no valid vtable index to specify.
duke@435 57 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@435 58 if (resolved_method->method_holder() == SystemDictionary::object_klass()) {
duke@435 59 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check");
duke@435 60 vtable_index = resolved_method->vtable_index();
duke@435 61 }
duke@435 62 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
duke@435 63 }
duke@435 64
duke@435 65 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
duke@435 66 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index");
duke@435 67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
duke@435 68 }
duke@435 69
duke@435 70 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
duke@435 71 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond");
duke@435 72 _resolved_klass = resolved_klass;
duke@435 73 _selected_klass = selected_klass;
duke@435 74 _resolved_method = resolved_method;
duke@435 75 _selected_method = selected_method;
duke@435 76 _vtable_index = vtable_index;
duke@435 77 if (CompilationPolicy::mustBeCompiled(selected_method)) {
duke@435 78 // Note: with several active threads, the mustBeCompiled may be true
duke@435 79 // while canBeCompiled is false; remove assert
duke@435 80 // assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile");
duke@435 81 if (THREAD->is_Compiler_thread()) {
duke@435 82 // don't force compilation, resolve was on behalf of compiler
duke@435 83 return;
duke@435 84 }
duke@435 85 CompileBroker::compile_method(selected_method, InvocationEntryBci,
duke@435 86 methodHandle(), 0, "mustBeCompiled", CHECK);
duke@435 87 }
duke@435 88 }
duke@435 89
duke@435 90
duke@435 91 //------------------------------------------------------------------------------------------------------------------------
duke@435 92 // Klass resolution
duke@435 93
duke@435 94 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) {
duke@435 95 if (!Reflection::verify_class_access(ref_klass->as_klassOop(),
duke@435 96 sel_klass->as_klassOop(),
duke@435 97 true)) {
duke@435 98 ResourceMark rm(THREAD);
duke@435 99 Exceptions::fthrow(
duke@435 100 THREAD_AND_LOCATION,
duke@435 101 vmSymbolHandles::java_lang_IllegalAccessError(),
duke@435 102 "tried to access class %s from class %s",
duke@435 103 sel_klass->external_name(),
duke@435 104 ref_klass->external_name()
duke@435 105 );
duke@435 106 return;
duke@435 107 }
duke@435 108 }
duke@435 109
duke@435 110 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 111 klassOop result_oop = pool->klass_ref_at(index, CHECK);
duke@435 112 result = KlassHandle(THREAD, result_oop);
duke@435 113 }
duke@435 114
duke@435 115 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 116 klassOop result_oop =
duke@435 117 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK);
duke@435 118 result = KlassHandle(THREAD, result_oop);
duke@435 119 }
duke@435 120
duke@435 121
duke@435 122 //------------------------------------------------------------------------------------------------------------------------
duke@435 123 // Method resolution
duke@435 124 //
duke@435 125 // According to JVM spec. $5.4.3c & $5.4.3d
duke@435 126
duke@435 127 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 128 methodOop result_oop = klass->uncached_lookup_method(name(), signature());
duke@435 129 result = methodHandle(THREAD, result_oop);
duke@435 130 }
duke@435 131
duke@435 132 // returns first instance method
duke@435 133 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 134 methodOop result_oop = klass->uncached_lookup_method(name(), signature());
duke@435 135 result = methodHandle(THREAD, result_oop);
duke@435 136 while (!result.is_null() && result->is_static()) {
duke@435 137 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super());
duke@435 138 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature()));
duke@435 139 }
duke@435 140 }
duke@435 141
duke@435 142
duke@435 143 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 144 ResourceMark rm(THREAD);
duke@435 145 klassVtable *vt = instanceKlass::cast(klass())->vtable();
duke@435 146 return vt->index_of_miranda(name(), signature());
duke@435 147 }
duke@435 148
duke@435 149 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) {
duke@435 150 instanceKlass *ik = instanceKlass::cast(klass());
duke@435 151 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature()));
duke@435 152 }
duke@435 153
duke@435 154 void LinkResolver::check_method_accessability(KlassHandle ref_klass,
duke@435 155 KlassHandle resolved_klass,
duke@435 156 KlassHandle sel_klass,
duke@435 157 methodHandle sel_method,
duke@435 158 TRAPS) {
duke@435 159
duke@435 160 AccessFlags flags = sel_method->access_flags();
duke@435 161
duke@435 162 // Special case: arrays always override "clone". JVMS 2.15.
duke@435 163 // If the resolved klass is an array class, and the declaring class
duke@435 164 // is java.lang.Object and the method is "clone", set the flags
duke@435 165 // to public.
duke@435 166 //
duke@435 167 // We'll check for the method name first, as that's most likely
duke@435 168 // to be false (so we'll short-circuit out of these tests).
duke@435 169 if (sel_method->name() == vmSymbols::clone_name() &&
duke@435 170 sel_klass() == SystemDictionary::object_klass() &&
duke@435 171 resolved_klass->oop_is_array()) {
duke@435 172 // We need to change "protected" to "public".
duke@435 173 assert(flags.is_protected(), "clone not protected?");
duke@435 174 jint new_flags = flags.as_int();
duke@435 175 new_flags = new_flags & (~JVM_ACC_PROTECTED);
duke@435 176 new_flags = new_flags | JVM_ACC_PUBLIC;
duke@435 177 flags.set_flags(new_flags);
duke@435 178 }
duke@435 179
duke@435 180 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
duke@435 181 resolved_klass->as_klassOop(),
duke@435 182 sel_klass->as_klassOop(),
duke@435 183 flags,
duke@435 184 true)) {
duke@435 185 ResourceMark rm(THREAD);
duke@435 186 Exceptions::fthrow(
duke@435 187 THREAD_AND_LOCATION,
duke@435 188 vmSymbolHandles::java_lang_IllegalAccessError(),
duke@435 189 "tried to access method %s.%s%s from class %s",
duke@435 190 sel_klass->external_name(),
duke@435 191 sel_method->name()->as_C_string(),
duke@435 192 sel_method->signature()->as_C_string(),
duke@435 193 ref_klass->external_name()
duke@435 194 );
duke@435 195 return;
duke@435 196 }
duke@435 197 }
duke@435 198
duke@435 199 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass,
duke@435 200 constantPoolHandle pool, int index, TRAPS) {
duke@435 201
duke@435 202 // resolve klass
duke@435 203 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 204
duke@435 205 symbolHandle method_name (THREAD, pool->name_ref_at(index));
duke@435 206 symbolHandle method_signature (THREAD, pool->signature_ref_at(index));
duke@435 207 KlassHandle current_klass(THREAD, pool->pool_holder());
duke@435 208
duke@435 209 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
duke@435 210 }
duke@435 211
duke@435 212 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
duke@435 213
duke@435 214 // resolve klass
duke@435 215 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 216 symbolHandle method_name (THREAD, pool->name_ref_at(index));
duke@435 217 symbolHandle method_signature (THREAD, pool->signature_ref_at(index));
duke@435 218 KlassHandle current_klass(THREAD, pool->pool_holder());
duke@435 219
duke@435 220 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
duke@435 221 }
duke@435 222
duke@435 223
duke@435 224 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass,
duke@435 225 symbolHandle method_name, symbolHandle method_signature,
duke@435 226 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 227
duke@435 228 // 1. check if klass is not interface
duke@435 229 if (resolved_klass->is_interface()) {
duke@435 230 char buf[200];
duke@435 231 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name());
duke@435 232 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 233 }
duke@435 234
duke@435 235 // 2. lookup method in resolved klass and its super klasses
duke@435 236 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 237
duke@435 238 if (resolved_method.is_null()) { // not found in the class hierarchy
duke@435 239 // 3. lookup method in all the interfaces implemented by the resolved klass
duke@435 240 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 241
duke@435 242 if (resolved_method.is_null()) {
duke@435 243 // 4. method lookup failed
duke@435 244 ResourceMark rm(THREAD);
duke@435 245 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
duke@435 246 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 247 method_name(),
duke@435 248 method_signature()));
duke@435 249 }
duke@435 250 }
duke@435 251
duke@435 252 // 5. check if method is concrete
duke@435 253 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) {
duke@435 254 ResourceMark rm(THREAD);
duke@435 255 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 256 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 257 method_name(),
duke@435 258 method_signature()));
duke@435 259 }
duke@435 260
duke@435 261 // 6. access checks, access checking may be turned off when calling from within the VM.
duke@435 262 if (check_access) {
duke@435 263 assert(current_klass.not_null() , "current_klass should not be null");
duke@435 264
duke@435 265 // check if method can be accessed by the referring class
duke@435 266 check_method_accessability(current_klass,
duke@435 267 resolved_klass,
duke@435 268 KlassHandle(THREAD, resolved_method->method_holder()),
duke@435 269 resolved_method,
duke@435 270 CHECK);
duke@435 271
duke@435 272 // check loader constraints
duke@435 273 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
duke@435 274 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
duke@435 275 {
duke@435 276 ResourceMark rm(THREAD);
duke@435 277 char* failed_type_name =
duke@435 278 SystemDictionary::check_signature_loaders(method_signature, loader,
duke@435 279 class_loader, true, CHECK);
duke@435 280 if (failed_type_name != NULL) {
duke@435 281 const char* msg = "loader constraint violation: when resolving method"
duke@435 282 " \"%s\" the class loader (instance of %s) of the current class, %s,"
duke@435 283 " and the class loader (instance of %s) for resolved class, %s, have"
duke@435 284 " different Class objects for the type %s used in the signature";
duke@435 285 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature());
duke@435 286 const char* loader1 = SystemDictionary::loader_name(loader());
duke@435 287 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
duke@435 288 const char* loader2 = SystemDictionary::loader_name(class_loader());
duke@435 289 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
duke@435 290 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
duke@435 291 strlen(current) + strlen(loader2) + strlen(resolved) +
duke@435 292 strlen(failed_type_name);
duke@435 293 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
duke@435 294 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
duke@435 295 resolved, failed_type_name);
duke@435 296 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
duke@435 297 }
duke@435 298 }
duke@435 299 }
duke@435 300 }
duke@435 301
duke@435 302 void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
duke@435 303 KlassHandle resolved_klass,
duke@435 304 symbolHandle method_name,
duke@435 305 symbolHandle method_signature,
duke@435 306 KlassHandle current_klass,
duke@435 307 bool check_access, TRAPS) {
duke@435 308
duke@435 309 // check if klass is interface
duke@435 310 if (!resolved_klass->is_interface()) {
duke@435 311 char buf[200];
duke@435 312 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name());
duke@435 313 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 314 }
duke@435 315
duke@435 316 // lookup method in this interface or its super, java.lang.Object
duke@435 317 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 318
duke@435 319 if (resolved_method.is_null()) {
duke@435 320 // lookup method in all the super-interfaces
duke@435 321 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
duke@435 322 if (resolved_method.is_null()) {
duke@435 323 // no method found
duke@435 324 ResourceMark rm(THREAD);
duke@435 325 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
duke@435 326 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 327 method_name(),
duke@435 328 method_signature()));
duke@435 329 }
duke@435 330 }
duke@435 331
duke@435 332 if (check_access) {
duke@435 333 HandleMark hm(THREAD);
duke@435 334 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
duke@435 335 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
duke@435 336 {
duke@435 337 ResourceMark rm(THREAD);
duke@435 338 char* failed_type_name =
duke@435 339 SystemDictionary::check_signature_loaders(method_signature, loader,
duke@435 340 class_loader, true, CHECK);
duke@435 341 if (failed_type_name != NULL) {
duke@435 342 const char* msg = "loader constraint violation: when resolving "
duke@435 343 "interface method \"%s\" the class loader (instance of %s) of the "
duke@435 344 "current class, %s, and the class loader (instance of %s) for "
duke@435 345 "resolved class, %s, have different Class objects for the type %s "
duke@435 346 "used in the signature";
duke@435 347 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature());
duke@435 348 const char* loader1 = SystemDictionary::loader_name(loader());
duke@435 349 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
duke@435 350 const char* loader2 = SystemDictionary::loader_name(class_loader());
duke@435 351 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
duke@435 352 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
duke@435 353 strlen(current) + strlen(loader2) + strlen(resolved) +
duke@435 354 strlen(failed_type_name);
duke@435 355 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
duke@435 356 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
duke@435 357 resolved, failed_type_name);
duke@435 358 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
duke@435 359 }
duke@435 360 }
duke@435 361 }
duke@435 362 }
duke@435 363
duke@435 364 //------------------------------------------------------------------------------------------------------------------------
duke@435 365 // Field resolution
duke@435 366
duke@435 367 void LinkResolver::check_field_accessability(KlassHandle ref_klass,
duke@435 368 KlassHandle resolved_klass,
duke@435 369 KlassHandle sel_klass,
duke@435 370 fieldDescriptor& fd,
duke@435 371 TRAPS) {
duke@435 372 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
duke@435 373 resolved_klass->as_klassOop(),
duke@435 374 sel_klass->as_klassOop(),
duke@435 375 fd.access_flags(),
duke@435 376 true)) {
duke@435 377 ResourceMark rm(THREAD);
duke@435 378 Exceptions::fthrow(
duke@435 379 THREAD_AND_LOCATION,
duke@435 380 vmSymbolHandles::java_lang_IllegalAccessError(),
duke@435 381 "tried to access field %s.%s from class %s",
duke@435 382 sel_klass->external_name(),
duke@435 383 fd.name()->as_C_string(),
duke@435 384 ref_klass->external_name()
duke@435 385 );
duke@435 386 return;
duke@435 387 }
duke@435 388 }
duke@435 389
duke@435 390 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) {
duke@435 391 resolve_field(result, pool, index, byte, check_only, true, CHECK);
duke@435 392 }
duke@435 393
duke@435 394 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) {
duke@435 395 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
duke@435 396 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode");
duke@435 397
duke@435 398 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
duke@435 399 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic);
duke@435 400
duke@435 401 // resolve specified klass
duke@435 402 KlassHandle resolved_klass;
duke@435 403 if (update_pool) {
duke@435 404 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 405 } else {
duke@435 406 resolve_klass_no_update(resolved_klass, pool, index, CHECK);
duke@435 407 }
duke@435 408 // Load these early in case the resolve of the containing klass fails
duke@435 409 symbolOop field = pool->name_ref_at(index);
duke@435 410 symbolHandle field_h (THREAD, field); // preserve in case we need the name
duke@435 411 symbolOop sig = pool->signature_ref_at(index);
duke@435 412 // Check if there's a resolved klass containing the field
duke@435 413 if( resolved_klass.is_null() ) {
duke@435 414 ResourceMark rm(THREAD);
duke@435 415 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
duke@435 416 }
duke@435 417
duke@435 418 // Resolve instance field
duke@435 419 fieldDescriptor fd; // find_field initializes fd if found
duke@435 420 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd));
duke@435 421 // check if field exists; i.e., if a klass containing the field def has been selected
duke@435 422 if (sel_klass.is_null()){
duke@435 423 ResourceMark rm(THREAD);
duke@435 424 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
duke@435 425 }
duke@435 426
duke@435 427 // check access
duke@435 428 KlassHandle ref_klass(THREAD, pool->pool_holder());
duke@435 429 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK);
duke@435 430
duke@435 431 // check for errors
duke@435 432 if (is_static != fd.is_static()) {
duke@435 433 char msg[200];
duke@435 434 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@435 435 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg);
duke@435 436 }
duke@435 437
duke@435 438 // Final fields can only be accessed from its own class.
duke@435 439 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) {
duke@435 440 THROW(vmSymbols::java_lang_IllegalAccessError());
duke@435 441 }
duke@435 442
duke@435 443 // initialize resolved_klass if necessary
duke@435 444 // note 1: the klass which declared the field must be initialized (i.e, sel_klass)
duke@435 445 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99)
duke@435 446 //
duke@435 447 // note 2: we don't want to force initialization if we are just checking
duke@435 448 // if the field access is legal; e.g., during compilation
duke@435 449 if (is_static && !check_only) {
duke@435 450 sel_klass->initialize(CHECK);
duke@435 451 }
duke@435 452
duke@435 453 {
duke@435 454 HandleMark hm(THREAD);
duke@435 455 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader());
duke@435 456 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader());
duke@435 457 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index));
duke@435 458 {
duke@435 459 ResourceMark rm(THREAD);
duke@435 460 char* failed_type_name =
duke@435 461 SystemDictionary::check_signature_loaders(signature_ref,
duke@435 462 ref_loader, sel_loader,
duke@435 463 false,
duke@435 464 CHECK);
duke@435 465 if (failed_type_name != NULL) {
duke@435 466 const char* msg = "loader constraint violation: when resolving field"
duke@435 467 " \"%s\" the class loader (instance of %s) of the referring class, "
duke@435 468 "%s, and the class loader (instance of %s) for the field's resolved "
duke@435 469 "type, %s, have different Class objects for that type";
duke@435 470 char* field_name = field_h()->as_C_string();
duke@435 471 const char* loader1 = SystemDictionary::loader_name(ref_loader());
duke@435 472 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string();
duke@435 473 const char* loader2 = SystemDictionary::loader_name(sel_loader());
duke@435 474 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) +
duke@435 475 strlen(sel) + strlen(loader2) + strlen(failed_type_name);
duke@435 476 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
duke@435 477 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2,
duke@435 478 failed_type_name);
duke@435 479 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
duke@435 480 }
duke@435 481 }
duke@435 482 }
duke@435 483
duke@435 484 // return information. note that the klass is set to the actual klass containing the
duke@435 485 // field, otherwise access of static fields in superclasses will not work.
duke@435 486 KlassHandle holder (THREAD, fd.field_holder());
duke@435 487 symbolHandle name (THREAD, fd.name());
duke@435 488 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags());
duke@435 489 }
duke@435 490
duke@435 491
duke@435 492 //------------------------------------------------------------------------------------------------------------------------
duke@435 493 // Invoke resolution
duke@435 494 //
duke@435 495 // Naming conventions:
duke@435 496 //
duke@435 497 // resolved_method the specified method (i.e., static receiver specified via constant pool index)
duke@435 498 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class)
duke@435 499 // resolved_klass the specified klass (i.e., specified via constant pool index)
duke@435 500 // recv_klass the receiver klass
duke@435 501
duke@435 502
duke@435 503 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name,
duke@435 504 symbolHandle method_signature, KlassHandle current_klass,
duke@435 505 bool check_access, bool initialize_class, TRAPS) {
duke@435 506 methodHandle resolved_method;
duke@435 507 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 508 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder()));
duke@435 509
duke@435 510 // Initialize klass (this should only happen if everything is ok)
duke@435 511 if (initialize_class && resolved_klass->should_be_initialized()) {
duke@435 512 resolved_klass->initialize(CHECK);
duke@435 513 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 514 }
duke@435 515
duke@435 516 // setup result
duke@435 517 result.set_static(resolved_klass, resolved_method, CHECK);
duke@435 518 }
duke@435 519
duke@435 520 // throws linktime exceptions
duke@435 521 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass,
duke@435 522 symbolHandle method_name, symbolHandle method_signature,
duke@435 523 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 524
duke@435 525 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 526 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
duke@435 527
duke@435 528 // check if static
duke@435 529 if (!resolved_method->is_static()) {
duke@435 530 char buf[200];
duke@435 531 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 532 resolved_method->name(),
duke@435 533 resolved_method->signature()));
duke@435 534 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 535 }
duke@435 536 }
duke@435 537
duke@435 538
duke@435 539 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name,
duke@435 540 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 541 methodHandle resolved_method;
duke@435 542 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 543 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK);
duke@435 544 }
duke@435 545
duke@435 546 // throws linktime exceptions
duke@435 547 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass,
duke@435 548 symbolHandle method_name, symbolHandle method_signature,
duke@435 549 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 550
duke@435 551 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 552
duke@435 553 // check if method name is <init>, that it is found in same klass as static type
duke@435 554 if (resolved_method->name() == vmSymbols::object_initializer_name() &&
duke@435 555 resolved_method->method_holder() != resolved_klass()) {
duke@435 556 ResourceMark rm(THREAD);
duke@435 557 Exceptions::fthrow(
duke@435 558 THREAD_AND_LOCATION,
duke@435 559 vmSymbolHandles::java_lang_NoSuchMethodError(),
duke@435 560 "%s: method %s%s not found",
duke@435 561 resolved_klass->external_name(),
duke@435 562 resolved_method->name()->as_C_string(),
duke@435 563 resolved_method->signature()->as_C_string()
duke@435 564 );
duke@435 565 return;
duke@435 566 }
duke@435 567
duke@435 568 // check if not static
duke@435 569 if (resolved_method->is_static()) {
duke@435 570 char buf[200];
duke@435 571 jio_snprintf(buf, sizeof(buf),
duke@435 572 "Expecting non-static method %s",
duke@435 573 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 574 resolved_method->name(),
duke@435 575 resolved_method->signature()));
duke@435 576 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 577 }
duke@435 578 }
duke@435 579
duke@435 580 // throws runtime exceptions
duke@435 581 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
duke@435 582 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 583
duke@435 584 // resolved method is selected method unless we have an old-style lookup
duke@435 585 methodHandle sel_method(THREAD, resolved_method());
duke@435 586
duke@435 587 // check if this is an old-style super call and do a new lookup if so
duke@435 588 { KlassHandle method_klass = KlassHandle(THREAD,
duke@435 589 resolved_method->method_holder());
duke@435 590
duke@435 591 if (check_access &&
duke@435 592 // a) check if ACC_SUPER flag is set for the current class
duke@435 593 current_klass->is_super() &&
duke@435 594 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!)
duke@435 595 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() &&
duke@435 596 // c) check if the method is not <init>
duke@435 597 resolved_method->name() != vmSymbols::object_initializer_name()) {
duke@435 598 // Lookup super method
duke@435 599 KlassHandle super_klass(THREAD, current_klass->super());
duke@435 600 lookup_instance_method_in_klasses(sel_method, super_klass,
duke@435 601 symbolHandle(THREAD, resolved_method->name()),
duke@435 602 symbolHandle(THREAD, resolved_method->signature()), CHECK);
duke@435 603 // check if found
duke@435 604 if (sel_method.is_null()) {
duke@435 605 ResourceMark rm(THREAD);
duke@435 606 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 607 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 608 resolved_method->name(),
duke@435 609 resolved_method->signature()));
duke@435 610 }
duke@435 611 }
duke@435 612 }
duke@435 613
duke@435 614 // check if not static
duke@435 615 if (sel_method->is_static()) {
duke@435 616 char buf[200];
duke@435 617 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 618 resolved_method->name(),
duke@435 619 resolved_method->signature()));
duke@435 620 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 621 }
duke@435 622
duke@435 623 // check if abstract
duke@435 624 if (sel_method->is_abstract()) {
duke@435 625 ResourceMark rm(THREAD);
duke@435 626 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 627 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 628 sel_method->name(),
duke@435 629 sel_method->signature()));
duke@435 630 }
duke@435 631
duke@435 632 // setup result
duke@435 633 result.set_static(resolved_klass, sel_method, CHECK);
duke@435 634 }
duke@435 635
duke@435 636 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass,
duke@435 637 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass,
duke@435 638 bool check_access, bool check_null_and_abstract, TRAPS) {
duke@435 639 methodHandle resolved_method;
duke@435 640 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 641 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK);
duke@435 642 }
duke@435 643
duke@435 644 // throws linktime exceptions
duke@435 645 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass,
duke@435 646 symbolHandle method_name, symbolHandle method_signature,
duke@435 647 KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 648 // normal method resolution
duke@435 649 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 650
duke@435 651 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
duke@435 652 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
duke@435 653
duke@435 654 // check if not static
duke@435 655 if (resolved_method->is_static()) {
duke@435 656 char buf[200];
duke@435 657 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 658 resolved_method->name(),
duke@435 659 resolved_method->signature()));
duke@435 660 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 661 }
duke@435 662 }
duke@435 663
duke@435 664 // throws runtime exceptions
duke@435 665 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
duke@435 666 methodHandle resolved_method,
duke@435 667 KlassHandle resolved_klass,
duke@435 668 Handle recv,
duke@435 669 KlassHandle recv_klass,
duke@435 670 bool check_null_and_abstract,
duke@435 671 TRAPS) {
duke@435 672
duke@435 673 // setup default return values
duke@435 674 int vtable_index = methodOopDesc::invalid_vtable_index;
duke@435 675 methodHandle selected_method;
duke@435 676
duke@435 677 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop");
duke@435 678
duke@435 679 // runtime method resolution
duke@435 680 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists
duke@435 681 THROW(vmSymbols::java_lang_NullPointerException());
duke@435 682 }
duke@435 683
duke@435 684 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
duke@435 685 // has not been rewritten, and the vtable initialized.
duke@435 686 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
duke@435 687
duke@435 688 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
duke@435 689 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since
duke@435 690 // a missing receiver might result in a bogus lookup.
duke@435 691 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
duke@435 692
duke@435 693 // do lookup based on receiver klass using the vtable index
duke@435 694 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method
duke@435 695 vtable_index = vtable_index_of_miranda_method(resolved_klass,
duke@435 696 symbolHandle(THREAD, resolved_method->name()),
duke@435 697 symbolHandle(THREAD, resolved_method->signature()), CHECK);
duke@435 698 assert(vtable_index >= 0 , "we should have valid vtable index at this point");
duke@435 699
duke@435 700 instanceKlass* inst = instanceKlass::cast(recv_klass());
duke@435 701 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
duke@435 702 } else {
duke@435 703 // at this point we are sure that resolved_method is virtual and not
duke@435 704 // a miranda method; therefore, it must have a valid vtable index.
duke@435 705 vtable_index = resolved_method->vtable_index();
duke@435 706 // We could get a negative vtable_index for final methods,
duke@435 707 // because as an optimization they are they are never put in the vtable,
duke@435 708 // unless they override an existing method.
duke@435 709 // If we do get a negative, it means the resolved method is the the selected
duke@435 710 // method, and it can never be changed by an override.
duke@435 711 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
duke@435 712 assert(resolved_method->can_be_statically_bound(), "cannot override this method");
duke@435 713 selected_method = resolved_method;
duke@435 714 } else {
duke@435 715 // recv_klass might be an arrayKlassOop but all vtables start at
duke@435 716 // the same place. The cast is to avoid virtual call and assertion.
duke@435 717 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part();
duke@435 718 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
duke@435 719 }
duke@435 720 }
duke@435 721
duke@435 722 // check if method exists
duke@435 723 if (selected_method.is_null()) {
duke@435 724 ResourceMark rm(THREAD);
duke@435 725 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 726 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 727 resolved_method->name(),
duke@435 728 resolved_method->signature()));
duke@435 729 }
duke@435 730
duke@435 731 // check if abstract
duke@435 732 if (check_null_and_abstract && selected_method->is_abstract()) {
duke@435 733 ResourceMark rm(THREAD);
duke@435 734 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 735 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
duke@435 736 selected_method->name(),
duke@435 737 selected_method->signature()));
duke@435 738 }
duke@435 739
duke@435 740 // setup result
duke@435 741 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
duke@435 742 }
duke@435 743
duke@435 744 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass,
duke@435 745 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass,
duke@435 746 bool check_access, bool check_null_and_abstract, TRAPS) {
duke@435 747 methodHandle resolved_method;
duke@435 748 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 749 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK);
duke@435 750 }
duke@435 751
duke@435 752 // throws linktime exceptions
duke@435 753 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name,
duke@435 754 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
duke@435 755 // normal interface method resolution
duke@435 756 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
duke@435 757
duke@435 758 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
duke@435 759 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
duke@435 760 }
duke@435 761
duke@435 762 // throws runtime exceptions
duke@435 763 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
duke@435 764 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) {
duke@435 765 // check if receiver exists
duke@435 766 if (check_null_and_abstract && recv.is_null()) {
duke@435 767 THROW(vmSymbols::java_lang_NullPointerException());
duke@435 768 }
duke@435 769
duke@435 770 // check if receiver klass implements the resolved interface
duke@435 771 if (!recv_klass->is_subtype_of(resolved_klass())) {
duke@435 772 char buf[200];
duke@435 773 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
duke@435 774 (Klass::cast(recv_klass()))->external_name(),
duke@435 775 (Klass::cast(resolved_klass()))->external_name());
duke@435 776 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
duke@435 777 }
duke@435 778 // do lookup based on receiver klass
duke@435 779 methodHandle sel_method;
duke@435 780 lookup_instance_method_in_klasses(sel_method, recv_klass,
duke@435 781 symbolHandle(THREAD, resolved_method->name()),
duke@435 782 symbolHandle(THREAD, resolved_method->signature()), CHECK);
duke@435 783 // check if method exists
duke@435 784 if (sel_method.is_null()) {
duke@435 785 ResourceMark rm(THREAD);
duke@435 786 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 787 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
duke@435 788 resolved_method->name(),
duke@435 789 resolved_method->signature()));
duke@435 790 }
duke@435 791 // check if public
duke@435 792 if (!sel_method->is_public()) {
duke@435 793 ResourceMark rm(THREAD);
duke@435 794 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(),
duke@435 795 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
duke@435 796 sel_method->name(),
duke@435 797 sel_method->signature()));
duke@435 798 }
duke@435 799 // check if abstract
duke@435 800 if (check_null_and_abstract && sel_method->is_abstract()) {
duke@435 801 ResourceMark rm(THREAD);
duke@435 802 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
duke@435 803 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
duke@435 804 sel_method->name(),
duke@435 805 sel_method->signature()));
duke@435 806 }
duke@435 807 // setup result
duke@435 808 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK);
duke@435 809 }
duke@435 810
duke@435 811
duke@435 812 methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
duke@435 813 KlassHandle resolved_klass,
duke@435 814 symbolHandle method_name,
duke@435 815 symbolHandle method_signature,
duke@435 816 KlassHandle current_klass,
duke@435 817 bool check_access) {
duke@435 818 EXCEPTION_MARK;
duke@435 819 methodHandle method_result;
duke@435 820 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
duke@435 821 if (HAS_PENDING_EXCEPTION) {
duke@435 822 CLEAR_PENDING_EXCEPTION;
duke@435 823 return methodHandle();
duke@435 824 } else {
duke@435 825 return method_result;
duke@435 826 }
duke@435 827 }
duke@435 828
duke@435 829 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
duke@435 830 KlassHandle resolved_klass,
duke@435 831 symbolHandle method_name,
duke@435 832 symbolHandle method_signature,
duke@435 833 KlassHandle current_klass,
duke@435 834 bool check_access) {
duke@435 835 EXCEPTION_MARK;
duke@435 836 methodHandle method_result;
duke@435 837 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
duke@435 838 if (HAS_PENDING_EXCEPTION) {
duke@435 839 CLEAR_PENDING_EXCEPTION;
duke@435 840 return methodHandle();
duke@435 841 } else {
duke@435 842 return method_result;
duke@435 843 }
duke@435 844 }
duke@435 845
duke@435 846 methodHandle LinkResolver::resolve_virtual_call_or_null(
duke@435 847 KlassHandle receiver_klass,
duke@435 848 KlassHandle resolved_klass,
duke@435 849 symbolHandle name,
duke@435 850 symbolHandle signature,
duke@435 851 KlassHandle current_klass) {
duke@435 852 EXCEPTION_MARK;
duke@435 853 CallInfo info;
duke@435 854 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 855 if (HAS_PENDING_EXCEPTION) {
duke@435 856 CLEAR_PENDING_EXCEPTION;
duke@435 857 return methodHandle();
duke@435 858 }
duke@435 859 return info.selected_method();
duke@435 860 }
duke@435 861
duke@435 862 methodHandle LinkResolver::resolve_interface_call_or_null(
duke@435 863 KlassHandle receiver_klass,
duke@435 864 KlassHandle resolved_klass,
duke@435 865 symbolHandle name,
duke@435 866 symbolHandle signature,
duke@435 867 KlassHandle current_klass) {
duke@435 868 EXCEPTION_MARK;
duke@435 869 CallInfo info;
duke@435 870 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 871 if (HAS_PENDING_EXCEPTION) {
duke@435 872 CLEAR_PENDING_EXCEPTION;
duke@435 873 return methodHandle();
duke@435 874 }
duke@435 875 return info.selected_method();
duke@435 876 }
duke@435 877
duke@435 878 int LinkResolver::resolve_virtual_vtable_index(
duke@435 879 KlassHandle receiver_klass,
duke@435 880 KlassHandle resolved_klass,
duke@435 881 symbolHandle name,
duke@435 882 symbolHandle signature,
duke@435 883 KlassHandle current_klass) {
duke@435 884 EXCEPTION_MARK;
duke@435 885 CallInfo info;
duke@435 886 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 887 if (HAS_PENDING_EXCEPTION) {
duke@435 888 CLEAR_PENDING_EXCEPTION;
duke@435 889 return methodOopDesc::invalid_vtable_index;
duke@435 890 }
duke@435 891 return info.vtable_index();
duke@435 892 }
duke@435 893
duke@435 894 methodHandle LinkResolver::resolve_static_call_or_null(
duke@435 895 KlassHandle resolved_klass,
duke@435 896 symbolHandle name,
duke@435 897 symbolHandle signature,
duke@435 898 KlassHandle current_klass) {
duke@435 899 EXCEPTION_MARK;
duke@435 900 CallInfo info;
duke@435 901 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD);
duke@435 902 if (HAS_PENDING_EXCEPTION) {
duke@435 903 CLEAR_PENDING_EXCEPTION;
duke@435 904 return methodHandle();
duke@435 905 }
duke@435 906 return info.selected_method();
duke@435 907 }
duke@435 908
duke@435 909 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature,
duke@435 910 KlassHandle current_klass) {
duke@435 911 EXCEPTION_MARK;
duke@435 912 CallInfo info;
duke@435 913 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD);
duke@435 914 if (HAS_PENDING_EXCEPTION) {
duke@435 915 CLEAR_PENDING_EXCEPTION;
duke@435 916 return methodHandle();
duke@435 917 }
duke@435 918 return info.selected_method();
duke@435 919 }
duke@435 920
duke@435 921
duke@435 922
duke@435 923 //------------------------------------------------------------------------------------------------------------------------
duke@435 924 // ConstantPool entries
duke@435 925
duke@435 926 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
duke@435 927 switch (byte) {
duke@435 928 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break;
duke@435 929 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break;
duke@435 930 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break;
duke@435 931 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break;
duke@435 932 }
duke@435 933 return;
duke@435 934 }
duke@435 935
duke@435 936 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature,
duke@435 937 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) {
duke@435 938 // resolve klass
duke@435 939 resolve_klass(resolved_klass, pool, index, CHECK);
duke@435 940
duke@435 941 // Get name, signature, and static klass
duke@435 942 method_name = symbolHandle(THREAD, pool->name_ref_at(index));
duke@435 943 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index));
duke@435 944 current_klass = KlassHandle(THREAD, pool->pool_holder());
duke@435 945 }
duke@435 946
duke@435 947
duke@435 948 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 949 KlassHandle resolved_klass;
duke@435 950 symbolHandle method_name;
duke@435 951 symbolHandle method_signature;
duke@435 952 KlassHandle current_klass;
duke@435 953 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 954 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
duke@435 955 }
duke@435 956
duke@435 957
duke@435 958 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
duke@435 959 KlassHandle resolved_klass;
duke@435 960 symbolHandle method_name;
duke@435 961 symbolHandle method_signature;
duke@435 962 KlassHandle current_klass;
duke@435 963 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 964 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
duke@435 965 }
duke@435 966
duke@435 967
duke@435 968 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv,
duke@435 969 constantPoolHandle pool, int index,
duke@435 970 TRAPS) {
duke@435 971
duke@435 972 KlassHandle resolved_klass;
duke@435 973 symbolHandle method_name;
duke@435 974 symbolHandle method_signature;
duke@435 975 KlassHandle current_klass;
duke@435 976 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 977 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
duke@435 978 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
duke@435 979 }
duke@435 980
duke@435 981
duke@435 982 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) {
duke@435 983 KlassHandle resolved_klass;
duke@435 984 symbolHandle method_name;
duke@435 985 symbolHandle method_signature;
duke@435 986 KlassHandle current_klass;
duke@435 987 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
duke@435 988 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
duke@435 989 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
duke@435 990 }
duke@435 991
duke@435 992 //------------------------------------------------------------------------------------------------------------------------
duke@435 993 #ifndef PRODUCT
duke@435 994
duke@435 995 void FieldAccessInfo::print() {
duke@435 996 ResourceMark rm;
duke@435 997 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset());
duke@435 998 }
duke@435 999
duke@435 1000 #endif

Mercurial Repository: jdk8-mips64-public/hotspot

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