Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 1135:e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
Summary: During the work for 6829187 we have fixed a number of basic bugs which are logically grouped with 6815692 and 6858164 but which must be reviewed and pushed separately.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Mon, 04 Jan 2010 18:38:08 +0100 |
| parents | 389049f3f393 |
| children | 4ce7240d622c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 710 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_linkResolver.cpp.incl" | |
| 27 | |
| 28 //------------------------------------------------------------------------------------------------------------------------ | |
| 29 // Implementation of FieldAccessInfo | |
| 30 | |
| 31 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset, | |
| 32 BasicType field_type, AccessFlags access_flags) { | |
| 33 _klass = klass; | |
| 34 _name = name; | |
| 35 _field_index = field_index; | |
| 36 _field_offset = field_offset; | |
| 37 _field_type = field_type; | |
| 38 _access_flags = access_flags; | |
| 39 } | |
| 40 | |
| 41 | |
| 42 //------------------------------------------------------------------------------------------------------------------------ | |
| 43 // Implementation of CallInfo | |
| 44 | |
| 45 | |
| 46 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
| 47 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
| 48 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
| 53 // This is only called for interface methods. If the resolved_method | |
| 54 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
| 55 // we should pick the vtable index from the resolved method. | |
| 56 // Other than that case, there is no valid vtable index to specify. | |
| 57 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 58 if (resolved_method->method_holder() == SystemDictionary::object_klass()) { | |
| 59 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); | |
| 60 vtable_index = resolved_method->vtable_index(); | |
| 61 } | |
| 62 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 63 } | |
| 64 | |
| 65 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
| 66 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
| 67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 68 } | |
| 69 | |
| 70 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
| 71 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
| 72 _resolved_klass = resolved_klass; | |
| 73 _selected_klass = selected_klass; | |
| 74 _resolved_method = resolved_method; | |
| 75 _selected_method = selected_method; | |
| 76 _vtable_index = vtable_index; | |
| 77 if (CompilationPolicy::mustBeCompiled(selected_method)) { | |
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78 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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79 |
| 0 | 80 // Note: with several active threads, the mustBeCompiled may be true |
| 81 // while canBeCompiled is false; remove assert | |
| 82 // assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile"); | |
| 83 if (THREAD->is_Compiler_thread()) { | |
| 84 // don't force compilation, resolve was on behalf of compiler | |
| 85 return; | |
| 86 } | |
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87 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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88 // 'is_not_initialized' means not only '!is_initialized', but also that |
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89 // initialization has not been started yet ('!being_initialized') |
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90 // Do not force compilation of methods in uninitialized classes. |
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91 // Note that doing this would throw an assert later, |
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92 // in CompileBroker::compile_method. |
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93 // We sometimes use the link resolver to do reflective lookups |
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94 // even before classes are initialized. |
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95 return; |
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96 } |
| 0 | 97 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
| 98 methodHandle(), 0, "mustBeCompiled", CHECK); | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 | |
| 103 //------------------------------------------------------------------------------------------------------------------------ | |
| 104 // Klass resolution | |
| 105 | |
| 106 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
| 107 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
| 108 sel_klass->as_klassOop(), | |
| 109 true)) { | |
| 110 ResourceMark rm(THREAD); | |
| 111 Exceptions::fthrow( | |
| 112 THREAD_AND_LOCATION, | |
| 113 vmSymbolHandles::java_lang_IllegalAccessError(), | |
| 114 "tried to access class %s from class %s", | |
| 115 sel_klass->external_name(), | |
| 116 ref_klass->external_name() | |
| 117 ); | |
| 118 return; | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
| 123 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
| 124 result = KlassHandle(THREAD, result_oop); | |
| 125 } | |
| 126 | |
| 127 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
| 128 klassOop result_oop = | |
| 129 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
| 130 result = KlassHandle(THREAD, result_oop); | |
| 131 } | |
| 132 | |
| 133 | |
| 134 //------------------------------------------------------------------------------------------------------------------------ | |
| 135 // Method resolution | |
| 136 // | |
| 137 // According to JVM spec. $5.4.3c & $5.4.3d | |
| 138 | |
| 139 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 140 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
| 141 result = methodHandle(THREAD, result_oop); | |
| 142 } | |
| 143 | |
| 144 // returns first instance method | |
| 145 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 146 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
| 147 result = methodHandle(THREAD, result_oop); | |
| 148 while (!result.is_null() && result->is_static()) { | |
| 149 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
| 150 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 | |
| 155 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 156 ResourceMark rm(THREAD); | |
| 157 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
| 158 return vt->index_of_miranda(name(), signature()); | |
| 159 } | |
| 160 | |
| 161 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
| 162 instanceKlass *ik = instanceKlass::cast(klass()); | |
| 163 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); | |
| 164 } | |
| 165 | |
| 710 | 166 void LinkResolver::lookup_implicit_method(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
| 167 if (EnableMethodHandles && MethodHandles::enabled() && | |
| 168 name == vmSymbolHandles::invoke_name() && klass() == SystemDictionary::MethodHandle_klass()) { | |
| 169 methodOop result_oop = SystemDictionary::find_method_handle_invoke(signature, | |
| 170 Handle(), | |
| 171 Handle(), | |
| 172 CHECK); | |
| 173 if (result_oop != NULL) { | |
| 174 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); | |
| 175 result = methodHandle(THREAD, result_oop); | |
| 176 } | |
| 177 } | |
| 178 } | |
| 179 | |
| 0 | 180 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
| 181 KlassHandle resolved_klass, | |
| 182 KlassHandle sel_klass, | |
| 183 methodHandle sel_method, | |
| 184 TRAPS) { | |
| 185 | |
| 186 AccessFlags flags = sel_method->access_flags(); | |
| 187 | |
| 188 // Special case: arrays always override "clone". JVMS 2.15. | |
| 189 // If the resolved klass is an array class, and the declaring class | |
| 190 // is java.lang.Object and the method is "clone", set the flags | |
| 191 // to public. | |
| 192 // | |
| 193 // We'll check for the method name first, as that's most likely | |
| 194 // to be false (so we'll short-circuit out of these tests). | |
| 195 if (sel_method->name() == vmSymbols::clone_name() && | |
| 196 sel_klass() == SystemDictionary::object_klass() && | |
| 197 resolved_klass->oop_is_array()) { | |
| 198 // We need to change "protected" to "public". | |
| 199 assert(flags.is_protected(), "clone not protected?"); | |
| 200 jint new_flags = flags.as_int(); | |
| 201 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
| 202 new_flags = new_flags | JVM_ACC_PUBLIC; | |
| 203 flags.set_flags(new_flags); | |
| 204 } | |
| 205 | |
| 206 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 207 resolved_klass->as_klassOop(), | |
| 208 sel_klass->as_klassOop(), | |
| 209 flags, | |
| 210 true)) { | |
| 211 ResourceMark rm(THREAD); | |
| 212 Exceptions::fthrow( | |
| 213 THREAD_AND_LOCATION, | |
| 214 vmSymbolHandles::java_lang_IllegalAccessError(), | |
| 215 "tried to access method %s.%s%s from class %s", | |
| 216 sel_klass->external_name(), | |
| 217 sel_method->name()->as_C_string(), | |
| 218 sel_method->signature()->as_C_string(), | |
| 219 ref_klass->external_name() | |
| 220 ); | |
| 221 return; | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
| 226 constantPoolHandle pool, int index, TRAPS) { | |
| 227 | |
| 228 // resolve klass | |
| 229 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 230 | |
| 231 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
| 232 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
| 233 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
| 234 | |
| 235 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 236 } | |
| 237 | |
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238 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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239 // The class is java.dyn.MethodHandle |
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240 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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241 |
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242 symbolHandle method_name = vmSymbolHandles::invoke_name(); |
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243 |
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244 symbolHandle method_signature(THREAD, pool->signature_ref_at(index)); |
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245 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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246 |
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247 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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248 } |
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249 |
| 0 | 250 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
| 251 | |
| 252 // resolve klass | |
| 253 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 254 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
| 255 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
| 256 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
| 257 | |
| 258 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 259 } | |
| 260 | |
| 261 | |
| 262 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
| 263 symbolHandle method_name, symbolHandle method_signature, | |
| 264 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 265 | |
| 266 // 1. check if klass is not interface | |
| 267 if (resolved_klass->is_interface()) { | |
| 268 char buf[200]; | |
| 269 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
| 270 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 271 } | |
| 272 | |
| 273 // 2. lookup method in resolved klass and its super klasses | |
| 274 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 275 | |
| 276 if (resolved_method.is_null()) { // not found in the class hierarchy | |
| 277 // 3. lookup method in all the interfaces implemented by the resolved klass | |
| 278 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 279 | |
| 280 if (resolved_method.is_null()) { | |
| 710 | 281 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
| 282 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 283 } | |
| 284 | |
| 285 if (resolved_method.is_null()) { | |
| 0 | 286 // 4. method lookup failed |
| 287 ResourceMark rm(THREAD); | |
| 288 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 289 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 290 method_name(), | |
| 291 method_signature())); | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 // 5. check if method is concrete | |
| 296 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
| 297 ResourceMark rm(THREAD); | |
| 298 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 299 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 300 method_name(), | |
| 301 method_signature())); | |
| 302 } | |
| 303 | |
| 304 // 6. access checks, access checking may be turned off when calling from within the VM. | |
| 305 if (check_access) { | |
| 306 assert(current_klass.not_null() , "current_klass should not be null"); | |
| 307 | |
| 308 // check if method can be accessed by the referring class | |
| 309 check_method_accessability(current_klass, | |
| 310 resolved_klass, | |
| 311 KlassHandle(THREAD, resolved_method->method_holder()), | |
| 312 resolved_method, | |
| 313 CHECK); | |
| 314 | |
| 315 // check loader constraints | |
| 316 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 317 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 318 { | |
| 319 ResourceMark rm(THREAD); | |
| 320 char* failed_type_name = | |
| 321 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 322 class_loader, true, CHECK); | |
| 323 if (failed_type_name != NULL) { | |
| 324 const char* msg = "loader constraint violation: when resolving method" | |
| 325 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
| 326 " and the class loader (instance of %s) for resolved class, %s, have" | |
| 327 " different Class objects for the type %s used in the signature"; | |
| 328 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
| 329 const char* loader1 = SystemDictionary::loader_name(loader()); | |
| 330 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 331 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 332 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 333 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 334 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 335 strlen(failed_type_name); | |
| 336 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 337 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 338 resolved, failed_type_name); | |
| 339 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 340 } | |
| 341 } | |
| 342 } | |
| 343 } | |
| 344 | |
| 345 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
| 346 KlassHandle resolved_klass, | |
| 347 symbolHandle method_name, | |
| 348 symbolHandle method_signature, | |
| 349 KlassHandle current_klass, | |
| 350 bool check_access, TRAPS) { | |
| 351 | |
| 352 // check if klass is interface | |
| 353 if (!resolved_klass->is_interface()) { | |
| 354 char buf[200]; | |
| 355 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
| 356 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 357 } | |
| 358 | |
| 359 // lookup method in this interface or its super, java.lang.Object | |
| 360 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 361 | |
| 362 if (resolved_method.is_null()) { | |
| 363 // lookup method in all the super-interfaces | |
| 364 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
| 365 if (resolved_method.is_null()) { | |
| 366 // no method found | |
| 367 ResourceMark rm(THREAD); | |
| 368 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
| 369 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 370 method_name(), | |
| 371 method_signature())); | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 if (check_access) { | |
| 376 HandleMark hm(THREAD); | |
| 377 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
| 378 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
| 379 { | |
| 380 ResourceMark rm(THREAD); | |
| 381 char* failed_type_name = | |
| 382 SystemDictionary::check_signature_loaders(method_signature, loader, | |
| 383 class_loader, true, CHECK); | |
| 384 if (failed_type_name != NULL) { | |
| 385 const char* msg = "loader constraint violation: when resolving " | |
| 386 "interface method \"%s\" the class loader (instance of %s) of the " | |
| 387 "current class, %s, and the class loader (instance of %s) for " | |
| 388 "resolved class, %s, have different Class objects for the type %s " | |
| 389 "used in the signature"; | |
| 390 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
| 391 const char* loader1 = SystemDictionary::loader_name(loader()); | |
| 392 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
| 393 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
| 394 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
| 395 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
| 396 strlen(current) + strlen(loader2) + strlen(resolved) + | |
| 397 strlen(failed_type_name); | |
| 398 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 399 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
| 400 resolved, failed_type_name); | |
| 401 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 402 } | |
| 403 } | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 //------------------------------------------------------------------------------------------------------------------------ | |
| 408 // Field resolution | |
| 409 | |
| 410 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
| 411 KlassHandle resolved_klass, | |
| 412 KlassHandle sel_klass, | |
| 413 fieldDescriptor& fd, | |
| 414 TRAPS) { | |
| 415 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
| 416 resolved_klass->as_klassOop(), | |
| 417 sel_klass->as_klassOop(), | |
| 418 fd.access_flags(), | |
| 419 true)) { | |
| 420 ResourceMark rm(THREAD); | |
| 421 Exceptions::fthrow( | |
| 422 THREAD_AND_LOCATION, | |
| 423 vmSymbolHandles::java_lang_IllegalAccessError(), | |
| 424 "tried to access field %s.%s from class %s", | |
| 425 sel_klass->external_name(), | |
| 426 fd.name()->as_C_string(), | |
| 427 ref_klass->external_name() | |
| 428 ); | |
| 429 return; | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
| 434 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
| 435 } | |
| 436 | |
| 437 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
| 438 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
| 439 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
| 440 | |
| 441 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
| 442 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
| 443 | |
| 444 // resolve specified klass | |
| 445 KlassHandle resolved_klass; | |
| 446 if (update_pool) { | |
| 447 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 448 } else { | |
| 449 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
| 450 } | |
| 451 // Load these early in case the resolve of the containing klass fails | |
| 452 symbolOop field = pool->name_ref_at(index); | |
| 453 symbolHandle field_h (THREAD, field); // preserve in case we need the name | |
| 454 symbolOop sig = pool->signature_ref_at(index); | |
| 455 // Check if there's a resolved klass containing the field | |
| 456 if( resolved_klass.is_null() ) { | |
| 457 ResourceMark rm(THREAD); | |
| 458 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 459 } | |
| 460 | |
| 461 // Resolve instance field | |
| 462 fieldDescriptor fd; // find_field initializes fd if found | |
| 463 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
| 464 // check if field exists; i.e., if a klass containing the field def has been selected | |
| 465 if (sel_klass.is_null()){ | |
| 466 ResourceMark rm(THREAD); | |
| 467 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
| 468 } | |
| 469 | |
| 470 // check access | |
| 471 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
| 472 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
| 473 | |
| 474 // check for errors | |
| 475 if (is_static != fd.is_static()) { | |
| 476 char msg[200]; | |
| 477 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()); | |
| 478 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
| 479 } | |
| 480 | |
| 481 // Final fields can only be accessed from its own class. | |
| 482 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
| 483 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
| 484 } | |
| 485 | |
| 486 // initialize resolved_klass if necessary | |
| 487 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
| 488 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
| 489 // | |
| 490 // note 2: we don't want to force initialization if we are just checking | |
| 491 // if the field access is legal; e.g., during compilation | |
| 492 if (is_static && !check_only) { | |
| 493 sel_klass->initialize(CHECK); | |
| 494 } | |
| 495 | |
| 496 { | |
| 497 HandleMark hm(THREAD); | |
| 498 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
| 499 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
| 500 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); | |
| 501 { | |
| 502 ResourceMark rm(THREAD); | |
| 503 char* failed_type_name = | |
| 504 SystemDictionary::check_signature_loaders(signature_ref, | |
| 505 ref_loader, sel_loader, | |
| 506 false, | |
| 507 CHECK); | |
| 508 if (failed_type_name != NULL) { | |
| 509 const char* msg = "loader constraint violation: when resolving field" | |
| 510 " \"%s\" the class loader (instance of %s) of the referring class, " | |
| 511 "%s, and the class loader (instance of %s) for the field's resolved " | |
| 512 "type, %s, have different Class objects for that type"; | |
| 513 char* field_name = field_h()->as_C_string(); | |
| 514 const char* loader1 = SystemDictionary::loader_name(ref_loader()); | |
| 515 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
| 516 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
| 517 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
| 518 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
| 519 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
| 520 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
| 521 failed_type_name); | |
| 522 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
| 523 } | |
| 524 } | |
| 525 } | |
| 526 | |
| 527 // return information. note that the klass is set to the actual klass containing the | |
| 528 // field, otherwise access of static fields in superclasses will not work. | |
| 529 KlassHandle holder (THREAD, fd.field_holder()); | |
| 530 symbolHandle name (THREAD, fd.name()); | |
| 531 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); | |
| 532 } | |
| 533 | |
| 534 | |
| 535 //------------------------------------------------------------------------------------------------------------------------ | |
| 536 // Invoke resolution | |
| 537 // | |
| 538 // Naming conventions: | |
| 539 // | |
| 540 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
| 541 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
| 542 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
| 543 // recv_klass the receiver klass | |
| 544 | |
| 545 | |
| 546 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, | |
| 547 symbolHandle method_signature, KlassHandle current_klass, | |
| 548 bool check_access, bool initialize_class, TRAPS) { | |
| 549 methodHandle resolved_method; | |
| 550 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 551 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
| 552 | |
| 553 // Initialize klass (this should only happen if everything is ok) | |
| 554 if (initialize_class && resolved_klass->should_be_initialized()) { | |
| 555 resolved_klass->initialize(CHECK); | |
| 556 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 557 } | |
| 558 | |
| 559 // setup result | |
| 560 result.set_static(resolved_klass, resolved_method, CHECK); | |
| 561 } | |
| 562 | |
| 563 // throws linktime exceptions | |
| 564 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
| 565 symbolHandle method_name, symbolHandle method_signature, | |
| 566 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 567 | |
| 568 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 569 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
| 570 | |
| 571 // check if static | |
| 572 if (!resolved_method->is_static()) { | |
| 573 char buf[200]; | |
| 574 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 575 resolved_method->name(), | |
| 576 resolved_method->signature())); | |
| 577 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 578 } | |
| 579 } | |
| 580 | |
| 581 | |
| 582 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, | |
| 583 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
| 584 methodHandle resolved_method; | |
| 585 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 586 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
| 587 } | |
| 588 | |
| 589 // throws linktime exceptions | |
| 590 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
| 591 symbolHandle method_name, symbolHandle method_signature, | |
| 592 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 593 | |
| 594 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 595 | |
| 596 // check if method name is <init>, that it is found in same klass as static type | |
| 597 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
| 598 resolved_method->method_holder() != resolved_klass()) { | |
| 599 ResourceMark rm(THREAD); | |
| 600 Exceptions::fthrow( | |
| 601 THREAD_AND_LOCATION, | |
| 602 vmSymbolHandles::java_lang_NoSuchMethodError(), | |
| 603 "%s: method %s%s not found", | |
| 604 resolved_klass->external_name(), | |
| 605 resolved_method->name()->as_C_string(), | |
| 606 resolved_method->signature()->as_C_string() | |
| 607 ); | |
| 608 return; | |
| 609 } | |
| 610 | |
| 611 // check if not static | |
| 612 if (resolved_method->is_static()) { | |
| 613 char buf[200]; | |
| 614 jio_snprintf(buf, sizeof(buf), | |
| 615 "Expecting non-static method %s", | |
| 616 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 617 resolved_method->name(), | |
| 618 resolved_method->signature())); | |
| 619 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 620 } | |
| 621 } | |
| 622 | |
| 623 // throws runtime exceptions | |
| 624 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 625 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 626 | |
| 627 // resolved method is selected method unless we have an old-style lookup | |
| 628 methodHandle sel_method(THREAD, resolved_method()); | |
| 629 | |
| 630 // check if this is an old-style super call and do a new lookup if so | |
| 631 { KlassHandle method_klass = KlassHandle(THREAD, | |
| 632 resolved_method->method_holder()); | |
| 633 | |
| 634 if (check_access && | |
| 635 // a) check if ACC_SUPER flag is set for the current class | |
| 636 current_klass->is_super() && | |
| 637 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
| 638 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
| 639 // c) check if the method is not <init> | |
| 640 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
| 641 // Lookup super method | |
| 642 KlassHandle super_klass(THREAD, current_klass->super()); | |
| 643 lookup_instance_method_in_klasses(sel_method, super_klass, | |
| 644 symbolHandle(THREAD, resolved_method->name()), | |
| 645 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
| 646 // check if found | |
| 647 if (sel_method.is_null()) { | |
| 648 ResourceMark rm(THREAD); | |
| 649 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 650 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 651 resolved_method->name(), | |
| 652 resolved_method->signature())); | |
| 653 } | |
| 654 } | |
| 655 } | |
| 656 | |
| 657 // check if not static | |
| 658 if (sel_method->is_static()) { | |
| 659 char buf[200]; | |
| 660 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 661 resolved_method->name(), | |
| 662 resolved_method->signature())); | |
| 663 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 664 } | |
| 665 | |
| 666 // check if abstract | |
| 667 if (sel_method->is_abstract()) { | |
| 668 ResourceMark rm(THREAD); | |
| 669 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 670 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 671 sel_method->name(), | |
| 672 sel_method->signature())); | |
| 673 } | |
| 674 | |
| 675 // setup result | |
| 676 result.set_static(resolved_klass, sel_method, CHECK); | |
| 677 } | |
| 678 | |
| 679 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
| 680 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
| 681 bool check_access, bool check_null_and_abstract, TRAPS) { | |
| 682 methodHandle resolved_method; | |
| 683 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 684 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
| 685 } | |
| 686 | |
| 687 // throws linktime exceptions | |
| 688 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
| 689 symbolHandle method_name, symbolHandle method_signature, | |
| 690 KlassHandle current_klass, bool check_access, TRAPS) { | |
| 691 // normal method resolution | |
| 692 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 693 | |
| 694 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 695 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 696 | |
| 697 // check if not static | |
| 698 if (resolved_method->is_static()) { | |
| 699 char buf[200]; | |
| 700 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 701 resolved_method->name(), | |
| 702 resolved_method->signature())); | |
| 703 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 704 } | |
| 705 } | |
| 706 | |
| 707 // throws runtime exceptions | |
| 708 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
| 709 methodHandle resolved_method, | |
| 710 KlassHandle resolved_klass, | |
| 711 Handle recv, | |
| 712 KlassHandle recv_klass, | |
| 713 bool check_null_and_abstract, | |
| 714 TRAPS) { | |
| 715 | |
| 716 // setup default return values | |
| 717 int vtable_index = methodOopDesc::invalid_vtable_index; | |
| 718 methodHandle selected_method; | |
| 719 | |
| 720 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
| 721 | |
| 722 // runtime method resolution | |
| 723 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
| 724 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 725 } | |
| 726 | |
| 727 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 728 // has not been rewritten, and the vtable initialized. | |
| 729 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 730 | |
| 731 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
| 732 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
| 733 // a missing receiver might result in a bogus lookup. | |
| 734 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
| 735 | |
| 736 // do lookup based on receiver klass using the vtable index | |
| 737 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
| 738 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
| 739 symbolHandle(THREAD, resolved_method->name()), | |
| 740 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
| 741 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); | |
| 742 | |
| 743 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
| 744 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 745 } else { | |
| 746 // at this point we are sure that resolved_method is virtual and not | |
| 747 // a miranda method; therefore, it must have a valid vtable index. | |
| 748 vtable_index = resolved_method->vtable_index(); | |
| 749 // We could get a negative vtable_index for final methods, | |
| 750 // because as an optimization they are they are never put in the vtable, | |
| 751 // unless they override an existing method. | |
| 752 // If we do get a negative, it means the resolved method is the the selected | |
| 753 // method, and it can never be changed by an override. | |
| 754 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
| 755 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
| 756 selected_method = resolved_method; | |
| 757 } else { | |
| 758 // recv_klass might be an arrayKlassOop but all vtables start at | |
| 759 // the same place. The cast is to avoid virtual call and assertion. | |
| 760 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
| 761 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
| 762 } | |
| 763 } | |
| 764 | |
| 765 // check if method exists | |
| 766 if (selected_method.is_null()) { | |
| 767 ResourceMark rm(THREAD); | |
| 768 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 769 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 770 resolved_method->name(), | |
| 771 resolved_method->signature())); | |
| 772 } | |
| 773 | |
| 774 // check if abstract | |
| 775 if (check_null_and_abstract && selected_method->is_abstract()) { | |
| 776 ResourceMark rm(THREAD); | |
| 777 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 778 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
| 779 selected_method->name(), | |
| 780 selected_method->signature())); | |
| 781 } | |
| 782 | |
| 783 // setup result | |
| 784 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
| 785 } | |
| 786 | |
| 787 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
| 788 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
| 789 bool check_access, bool check_null_and_abstract, TRAPS) { | |
| 790 methodHandle resolved_method; | |
| 791 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 792 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
| 793 } | |
| 794 | |
| 795 // throws linktime exceptions | |
| 796 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, | |
| 797 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
| 798 // normal interface method resolution | |
| 799 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
| 800 | |
| 801 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
| 802 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
| 803 } | |
| 804 | |
| 805 // throws runtime exceptions | |
| 806 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
| 807 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
| 808 // check if receiver exists | |
| 809 if (check_null_and_abstract && recv.is_null()) { | |
| 810 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 811 } | |
| 812 | |
| 813 // check if receiver klass implements the resolved interface | |
| 814 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
| 815 char buf[200]; | |
| 816 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
| 817 (Klass::cast(recv_klass()))->external_name(), | |
| 818 (Klass::cast(resolved_klass()))->external_name()); | |
| 819 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
| 820 } | |
| 821 // do lookup based on receiver klass | |
| 822 methodHandle sel_method; | |
| 823 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
| 824 symbolHandle(THREAD, resolved_method->name()), | |
| 825 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
| 826 // check if method exists | |
| 827 if (sel_method.is_null()) { | |
| 828 ResourceMark rm(THREAD); | |
| 829 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 830 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 831 resolved_method->name(), | |
| 832 resolved_method->signature())); | |
| 833 } | |
| 834 // check if public | |
| 835 if (!sel_method->is_public()) { | |
| 836 ResourceMark rm(THREAD); | |
| 837 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
| 838 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 839 sel_method->name(), | |
| 840 sel_method->signature())); | |
| 841 } | |
| 842 // check if abstract | |
| 843 if (check_null_and_abstract && sel_method->is_abstract()) { | |
| 844 ResourceMark rm(THREAD); | |
| 845 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
| 846 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
| 847 sel_method->name(), | |
| 848 sel_method->signature())); | |
| 849 } | |
| 850 // setup result | |
| 851 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
| 852 } | |
| 853 | |
| 854 | |
| 855 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
| 856 KlassHandle resolved_klass, | |
| 857 symbolHandle method_name, | |
| 858 symbolHandle method_signature, | |
| 859 KlassHandle current_klass, | |
| 860 bool check_access) { | |
| 861 EXCEPTION_MARK; | |
| 862 methodHandle method_result; | |
| 863 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 864 if (HAS_PENDING_EXCEPTION) { | |
| 865 CLEAR_PENDING_EXCEPTION; | |
| 866 return methodHandle(); | |
| 867 } else { | |
| 868 return method_result; | |
| 869 } | |
| 870 } | |
| 871 | |
| 872 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
| 873 KlassHandle resolved_klass, | |
| 874 symbolHandle method_name, | |
| 875 symbolHandle method_signature, | |
| 876 KlassHandle current_klass, | |
| 877 bool check_access) { | |
| 878 EXCEPTION_MARK; | |
| 879 methodHandle method_result; | |
| 880 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
| 881 if (HAS_PENDING_EXCEPTION) { | |
| 882 CLEAR_PENDING_EXCEPTION; | |
| 883 return methodHandle(); | |
| 884 } else { | |
| 885 return method_result; | |
| 886 } | |
| 887 } | |
| 888 | |
| 889 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
| 890 KlassHandle receiver_klass, | |
| 891 KlassHandle resolved_klass, | |
| 892 symbolHandle name, | |
| 893 symbolHandle signature, | |
| 894 KlassHandle current_klass) { | |
| 895 EXCEPTION_MARK; | |
| 896 CallInfo info; | |
| 897 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 898 if (HAS_PENDING_EXCEPTION) { | |
| 899 CLEAR_PENDING_EXCEPTION; | |
| 900 return methodHandle(); | |
| 901 } | |
| 902 return info.selected_method(); | |
| 903 } | |
| 904 | |
| 905 methodHandle LinkResolver::resolve_interface_call_or_null( | |
| 906 KlassHandle receiver_klass, | |
| 907 KlassHandle resolved_klass, | |
| 908 symbolHandle name, | |
| 909 symbolHandle signature, | |
| 910 KlassHandle current_klass) { | |
| 911 EXCEPTION_MARK; | |
| 912 CallInfo info; | |
| 913 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 914 if (HAS_PENDING_EXCEPTION) { | |
| 915 CLEAR_PENDING_EXCEPTION; | |
| 916 return methodHandle(); | |
| 917 } | |
| 918 return info.selected_method(); | |
| 919 } | |
| 920 | |
| 921 int LinkResolver::resolve_virtual_vtable_index( | |
| 922 KlassHandle receiver_klass, | |
| 923 KlassHandle resolved_klass, | |
| 924 symbolHandle name, | |
| 925 symbolHandle signature, | |
| 926 KlassHandle current_klass) { | |
| 927 EXCEPTION_MARK; | |
| 928 CallInfo info; | |
| 929 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 930 if (HAS_PENDING_EXCEPTION) { | |
| 931 CLEAR_PENDING_EXCEPTION; | |
| 932 return methodOopDesc::invalid_vtable_index; | |
| 933 } | |
| 934 return info.vtable_index(); | |
| 935 } | |
| 936 | |
| 937 methodHandle LinkResolver::resolve_static_call_or_null( | |
| 938 KlassHandle resolved_klass, | |
| 939 symbolHandle name, | |
| 940 symbolHandle signature, | |
| 941 KlassHandle current_klass) { | |
| 942 EXCEPTION_MARK; | |
| 943 CallInfo info; | |
| 944 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
| 945 if (HAS_PENDING_EXCEPTION) { | |
| 946 CLEAR_PENDING_EXCEPTION; | |
| 947 return methodHandle(); | |
| 948 } | |
| 949 return info.selected_method(); | |
| 950 } | |
| 951 | |
| 952 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, | |
| 953 KlassHandle current_klass) { | |
| 954 EXCEPTION_MARK; | |
| 955 CallInfo info; | |
| 956 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
| 957 if (HAS_PENDING_EXCEPTION) { | |
| 958 CLEAR_PENDING_EXCEPTION; | |
| 959 return methodHandle(); | |
| 960 } | |
| 961 return info.selected_method(); | |
| 962 } | |
| 963 | |
| 964 | |
| 965 | |
| 966 //------------------------------------------------------------------------------------------------------------------------ | |
| 967 // ConstantPool entries | |
| 968 | |
| 969 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
| 970 switch (byte) { | |
| 971 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
| 972 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
| 973 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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974 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
| 0 | 975 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
| 976 } | |
| 977 return; | |
| 978 } | |
| 979 | |
| 980 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, | |
| 981 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { | |
| 982 // resolve klass | |
| 983 resolve_klass(resolved_klass, pool, index, CHECK); | |
| 984 | |
| 985 // Get name, signature, and static klass | |
| 986 method_name = symbolHandle(THREAD, pool->name_ref_at(index)); | |
| 987 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); | |
| 988 current_klass = KlassHandle(THREAD, pool->pool_holder()); | |
| 989 } | |
| 990 | |
| 991 | |
| 992 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 993 KlassHandle resolved_klass; | |
| 994 symbolHandle method_name; | |
| 995 symbolHandle method_signature; | |
| 996 KlassHandle current_klass; | |
| 997 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 998 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 999 } | |
| 1000 | |
| 1001 | |
| 1002 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
| 1003 KlassHandle resolved_klass; | |
| 1004 symbolHandle method_name; | |
| 1005 symbolHandle method_signature; | |
| 1006 KlassHandle current_klass; | |
| 1007 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1008 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
| 1009 } | |
| 1010 | |
| 1011 | |
| 1012 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
| 1013 constantPoolHandle pool, int index, | |
| 1014 TRAPS) { | |
| 1015 | |
| 1016 KlassHandle resolved_klass; | |
| 1017 symbolHandle method_name; | |
| 1018 symbolHandle method_signature; | |
| 1019 KlassHandle current_klass; | |
| 1020 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1021 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1022 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1023 } | |
| 1024 | |
| 1025 | |
| 1026 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
| 1027 KlassHandle resolved_klass; | |
| 1028 symbolHandle method_name; | |
| 1029 symbolHandle method_signature; | |
| 1030 KlassHandle current_klass; | |
| 1031 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
| 1032 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
| 1033 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
| 1034 } | |
| 1035 | |
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1036 |
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1037 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1038 assert(EnableInvokeDynamic, ""); |
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1039 |
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1040 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1041 |
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1042 // At this point, we only need the signature, and can ignore the name. |
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1043 symbolHandle method_signature(THREAD, pool->signature_ref_at(raw_index)); // raw_index works directly |
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1044 symbolHandle method_name = vmSymbolHandles::invoke_name(); |
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1045 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1046 |
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1047 // JSR 292: this must be an implicitly generated method MethodHandle.invoke(*...) |
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1048 // The extra MH receiver will be inserted into the stack on every call. |
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1049 methodHandle resolved_method; |
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1050 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
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1051 if (resolved_method.is_null()) { |
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1052 THROW(vmSymbols::java_lang_InternalError()); |
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1053 } |
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1054 result.set_virtual(resolved_klass, KlassHandle(), resolved_method, resolved_method, resolved_method->vtable_index(), CHECK); |
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1055 } |
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1056 |
| 0 | 1057 //------------------------------------------------------------------------------------------------------------------------ |
| 1058 #ifndef PRODUCT | |
| 1059 | |
| 1060 void FieldAccessInfo::print() { | |
| 1061 ResourceMark rm; | |
| 1062 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
| 1063 } | |
| 1064 | |
| 1065 #endif |