Thu, 19 Mar 2009 09:13:24 -0700
Merge
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 |