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src/share/vm/interpreter/linkResolver.cpp@72dee110246f
src/share/vm/interpreter/linkResolver.cpp
Fri, 11 Mar 2011 22:33:47 -0800
- author
- jrose
- date
- Fri, 11 Mar 2011 22:33:47 -0800
- changeset 2638
- 72dee110246f
- parent 2497
- 3582bf76420e
- child 2639
- 8033953d67ff
- permissions
- -rw-r--r--
6839872: remove implementation inheritance from JSR 292 APIs
Summary: consolidate runtime support in java.dyn.MethodHandleNatives; include transitional compatibility logic
Reviewed-by: twisti
1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "classfile/systemDictionary.hpp"
27 #include "classfile/vmSymbols.hpp"
28 #include "compiler/compileBroker.hpp"
29 #include "gc_interface/collectedHeap.inline.hpp"
30 #include "interpreter/bytecode.hpp"
31 #include "interpreter/interpreterRuntime.hpp"
32 #include "interpreter/linkResolver.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "memory/universe.inline.hpp"
35 #include "oops/instanceKlass.hpp"
36 #include "oops/objArrayOop.hpp"
37 #include "prims/methodHandles.hpp"
38 #include "prims/nativeLookup.hpp"
39 #include "runtime/compilationPolicy.hpp"
40 #include "runtime/fieldDescriptor.hpp"
41 #include "runtime/frame.inline.hpp"
42 #include "runtime/handles.inline.hpp"
43 #include "runtime/reflection.hpp"
44 #include "runtime/signature.hpp"
45 #include "runtime/vmThread.hpp"
46 #ifdef TARGET_OS_FAMILY_linux
47 # include "thread_linux.inline.hpp"
48 #endif
49 #ifdef TARGET_OS_FAMILY_solaris
50 # include "thread_solaris.inline.hpp"
51 #endif
52 #ifdef TARGET_OS_FAMILY_windows
53 # include "thread_windows.inline.hpp"
54 #endif
56 //------------------------------------------------------------------------------------------------------------------------
57 // Implementation of FieldAccessInfo
59 void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset,
60 BasicType field_type, AccessFlags access_flags) {
61 _klass = klass;
62 _name = name;
63 _field_index = field_index;
64 _field_offset = field_offset;
65 _field_type = field_type;
66 _access_flags = access_flags;
67 }
70 //------------------------------------------------------------------------------------------------------------------------
71 // Implementation of CallInfo
74 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) {
75 int vtable_index = methodOopDesc::nonvirtual_vtable_index;
76 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK);
77 }
80 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) {
81 // This is only called for interface methods. If the resolved_method
82 // comes from java/lang/Object, it can be the subject of a virtual call, so
83 // we should pick the vtable index from the resolved method.
84 // Other than that case, there is no valid vtable index to specify.
85 int vtable_index = methodOopDesc::invalid_vtable_index;
86 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) {
87 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check");
88 vtable_index = resolved_method->vtable_index();
89 }
90 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
91 }
93 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
94 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index");
95 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK);
96 }
98 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) {
99 assert(resolved_method->is_method_handle_invoke(), "");
100 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
101 assert(resolved_klass == resolved_method->method_holder(), "");
102 int vtable_index = methodOopDesc::nonvirtual_vtable_index;
103 assert(resolved_method->vtable_index() == vtable_index, "");
104 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK);
105 }
107 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
108 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond");
109 _resolved_klass = resolved_klass;
110 _selected_klass = selected_klass;
111 _resolved_method = resolved_method;
112 _selected_method = selected_method;
113 _vtable_index = vtable_index;
114 if (CompilationPolicy::must_be_compiled(selected_method)) {
115 // This path is unusual, mostly used by the '-Xcomp' stress test mode.
117 // Note: with several active threads, the must_be_compiled may be true
118 // while can_be_compiled is false; remove assert
119 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile");
120 if (THREAD->is_Compiler_thread()) {
121 // don't force compilation, resolve was on behalf of compiler
122 return;
123 }
124 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) {
125 // 'is_not_initialized' means not only '!is_initialized', but also that
126 // initialization has not been started yet ('!being_initialized')
127 // Do not force compilation of methods in uninitialized classes.
128 // Note that doing this would throw an assert later,
129 // in CompileBroker::compile_method.
130 // We sometimes use the link resolver to do reflective lookups
131 // even before classes are initialized.
132 return;
133 }
134 CompileBroker::compile_method(selected_method, InvocationEntryBci,
135 CompLevel_initial_compile,
136 methodHandle(), 0, "must_be_compiled", CHECK);
137 }
138 }
141 //------------------------------------------------------------------------------------------------------------------------
142 // Klass resolution
144 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) {
145 if (!Reflection::verify_class_access(ref_klass->as_klassOop(),
146 sel_klass->as_klassOop(),
147 true)) {
148 ResourceMark rm(THREAD);
149 Exceptions::fthrow(
150 THREAD_AND_LOCATION,
151 vmSymbols::java_lang_IllegalAccessError(),
152 "tried to access class %s from class %s",
153 sel_klass->external_name(),
154 ref_klass->external_name()
155 );
156 return;
157 }
158 }
160 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
161 klassOop result_oop = pool->klass_ref_at(index, CHECK);
162 result = KlassHandle(THREAD, result_oop);
163 }
165 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
166 klassOop result_oop =
167 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK);
168 result = KlassHandle(THREAD, result_oop);
169 }
172 //------------------------------------------------------------------------------------------------------------------------
173 // Method resolution
174 //
175 // According to JVM spec. $5.4.3c & $5.4.3d
177 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
178 methodOop result_oop = klass->uncached_lookup_method(name, signature);
179 if (EnableMethodHandles && result_oop != NULL) {
180 switch (result_oop->intrinsic_id()) {
181 case vmIntrinsics::_invokeExact:
182 case vmIntrinsics::_invokeGeneric:
183 case vmIntrinsics::_invokeDynamic:
184 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method.
185 return;
186 }
187 }
188 result = methodHandle(THREAD, result_oop);
189 }
191 // returns first instance method
192 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
193 methodOop result_oop = klass->uncached_lookup_method(name, signature);
194 result = methodHandle(THREAD, result_oop);
195 while (!result.is_null() && result->is_static()) {
196 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super());
197 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature));
198 }
199 }
202 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
203 ResourceMark rm(THREAD);
204 klassVtable *vt = instanceKlass::cast(klass())->vtable();
205 return vt->index_of_miranda(name, signature);
206 }
208 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
209 instanceKlass *ik = instanceKlass::cast(klass());
210 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature));
211 }
213 void LinkResolver::lookup_implicit_method(methodHandle& result,
214 KlassHandle klass, Symbol* name, Symbol* signature,
215 KlassHandle current_klass,
216 TRAPS) {
217 if (EnableMethodHandles &&
218 klass() == SystemDictionary::MethodHandle_klass() &&
219 methodOopDesc::is_method_handle_invoke_name(name)) {
220 if (!MethodHandles::enabled()) {
221 // Make sure the Java part of the runtime has been booted up.
222 klassOop natives = SystemDictionary::MethodHandleNatives_klass();
223 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) {
224 Symbol* natives_name = vmSymbols::java_dyn_MethodHandleNatives();
225 if (natives != NULL && AllowTransitionalJSR292) natives_name = Klass::cast(natives)->name();
226 SystemDictionary::resolve_or_fail(natives_name,
227 Handle(),
228 Handle(),
229 true,
230 CHECK);
231 }
232 }
233 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name,
234 signature,
235 current_klass,
236 CHECK);
237 if (result_oop != NULL) {
238 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature, "consistent");
239 result = methodHandle(THREAD, result_oop);
240 }
241 }
242 }
244 void LinkResolver::check_method_accessability(KlassHandle ref_klass,
245 KlassHandle resolved_klass,
246 KlassHandle sel_klass,
247 methodHandle sel_method,
248 TRAPS) {
250 AccessFlags flags = sel_method->access_flags();
252 // Special case: arrays always override "clone". JVMS 2.15.
253 // If the resolved klass is an array class, and the declaring class
254 // is java.lang.Object and the method is "clone", set the flags
255 // to public.
256 //
257 // We'll check for the method name first, as that's most likely
258 // to be false (so we'll short-circuit out of these tests).
259 if (sel_method->name() == vmSymbols::clone_name() &&
260 sel_klass() == SystemDictionary::Object_klass() &&
261 resolved_klass->oop_is_array()) {
262 // We need to change "protected" to "public".
263 assert(flags.is_protected(), "clone not protected?");
264 jint new_flags = flags.as_int();
265 new_flags = new_flags & (~JVM_ACC_PROTECTED);
266 new_flags = new_flags | JVM_ACC_PUBLIC;
267 flags.set_flags(new_flags);
268 }
270 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
271 resolved_klass->as_klassOop(),
272 sel_klass->as_klassOop(),
273 flags,
274 true)) {
275 ResourceMark rm(THREAD);
276 Exceptions::fthrow(
277 THREAD_AND_LOCATION,
278 vmSymbols::java_lang_IllegalAccessError(),
279 "tried to access method %s.%s%s from class %s",
280 sel_klass->external_name(),
281 sel_method->name()->as_C_string(),
282 sel_method->signature()->as_C_string(),
283 ref_klass->external_name()
284 );
285 return;
286 }
287 }
289 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass,
290 constantPoolHandle pool, int index, TRAPS) {
292 // resolve klass
293 resolve_klass(resolved_klass, pool, index, CHECK);
295 Symbol* method_name = pool->name_ref_at(index);
296 Symbol* method_signature = pool->signature_ref_at(index);
297 KlassHandle current_klass(THREAD, pool->pool_holder());
299 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
300 }
302 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
303 // The class is java.dyn.MethodHandle
304 resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
306 Symbol* method_name = vmSymbols::invokeExact_name();
308 Symbol* method_signature = pool->signature_ref_at(index);
309 KlassHandle current_klass (THREAD, pool->pool_holder());
311 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
312 }
314 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
316 // resolve klass
317 resolve_klass(resolved_klass, pool, index, CHECK);
318 Symbol* method_name = pool->name_ref_at(index);
319 Symbol* method_signature = pool->signature_ref_at(index);
320 KlassHandle current_klass(THREAD, pool->pool_holder());
322 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
323 }
326 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass,
327 Symbol* method_name, Symbol* method_signature,
328 KlassHandle current_klass, bool check_access, TRAPS) {
330 // 1. check if klass is not interface
331 if (resolved_klass->is_interface()) {
332 char buf[200];
333 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name());
334 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
335 }
337 // 2. lookup method in resolved klass and its super klasses
338 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
340 if (resolved_method.is_null()) { // not found in the class hierarchy
341 // 3. lookup method in all the interfaces implemented by the resolved klass
342 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
344 if (resolved_method.is_null()) {
345 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...)
346 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK);
347 }
349 if (resolved_method.is_null()) {
350 // 4. method lookup failed
351 ResourceMark rm(THREAD);
352 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
353 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
354 method_name,
355 method_signature));
356 }
357 }
359 // 5. check if method is concrete
360 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) {
361 ResourceMark rm(THREAD);
362 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
363 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
364 method_name,
365 method_signature));
366 }
368 // 6. access checks, access checking may be turned off when calling from within the VM.
369 if (check_access) {
370 assert(current_klass.not_null() , "current_klass should not be null");
372 // check if method can be accessed by the referring class
373 check_method_accessability(current_klass,
374 resolved_klass,
375 KlassHandle(THREAD, resolved_method->method_holder()),
376 resolved_method,
377 CHECK);
379 // check loader constraints
380 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
381 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
382 {
383 ResourceMark rm(THREAD);
384 char* failed_type_name =
385 SystemDictionary::check_signature_loaders(method_signature, loader,
386 class_loader, true, CHECK);
387 if (failed_type_name != NULL) {
388 const char* msg = "loader constraint violation: when resolving method"
389 " \"%s\" the class loader (instance of %s) of the current class, %s,"
390 " and the class loader (instance of %s) for resolved class, %s, have"
391 " different Class objects for the type %s used in the signature";
392 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature);
393 const char* loader1 = SystemDictionary::loader_name(loader());
394 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
395 const char* loader2 = SystemDictionary::loader_name(class_loader());
396 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
397 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
398 strlen(current) + strlen(loader2) + strlen(resolved) +
399 strlen(failed_type_name);
400 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
401 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
402 resolved, failed_type_name);
403 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
404 }
405 }
406 }
407 }
409 void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
410 KlassHandle resolved_klass,
411 Symbol* method_name,
412 Symbol* method_signature,
413 KlassHandle current_klass,
414 bool check_access, TRAPS) {
416 // check if klass is interface
417 if (!resolved_klass->is_interface()) {
418 char buf[200];
419 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name());
420 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
421 }
423 // lookup method in this interface or its super, java.lang.Object
424 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
426 if (resolved_method.is_null()) {
427 // lookup method in all the super-interfaces
428 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
429 if (resolved_method.is_null()) {
430 // no method found
431 ResourceMark rm(THREAD);
432 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
433 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
434 method_name,
435 method_signature));
436 }
437 }
439 if (check_access) {
440 HandleMark hm(THREAD);
441 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
442 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
443 {
444 ResourceMark rm(THREAD);
445 char* failed_type_name =
446 SystemDictionary::check_signature_loaders(method_signature, loader,
447 class_loader, true, CHECK);
448 if (failed_type_name != NULL) {
449 const char* msg = "loader constraint violation: when resolving "
450 "interface method \"%s\" the class loader (instance of %s) of the "
451 "current class, %s, and the class loader (instance of %s) for "
452 "resolved class, %s, have different Class objects for the type %s "
453 "used in the signature";
454 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature);
455 const char* loader1 = SystemDictionary::loader_name(loader());
456 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
457 const char* loader2 = SystemDictionary::loader_name(class_loader());
458 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
459 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
460 strlen(current) + strlen(loader2) + strlen(resolved) +
461 strlen(failed_type_name);
462 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
463 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
464 resolved, failed_type_name);
465 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
466 }
467 }
468 }
469 }
471 //------------------------------------------------------------------------------------------------------------------------
472 // Field resolution
474 void LinkResolver::check_field_accessability(KlassHandle ref_klass,
475 KlassHandle resolved_klass,
476 KlassHandle sel_klass,
477 fieldDescriptor& fd,
478 TRAPS) {
479 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
480 resolved_klass->as_klassOop(),
481 sel_klass->as_klassOop(),
482 fd.access_flags(),
483 true)) {
484 ResourceMark rm(THREAD);
485 Exceptions::fthrow(
486 THREAD_AND_LOCATION,
487 vmSymbols::java_lang_IllegalAccessError(),
488 "tried to access field %s.%s from class %s",
489 sel_klass->external_name(),
490 fd.name()->as_C_string(),
491 ref_klass->external_name()
492 );
493 return;
494 }
495 }
497 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) {
498 resolve_field(result, pool, index, byte, check_only, true, CHECK);
499 }
501 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) {
502 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
503 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode");
505 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
506 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic);
508 // resolve specified klass
509 KlassHandle resolved_klass;
510 if (update_pool) {
511 resolve_klass(resolved_klass, pool, index, CHECK);
512 } else {
513 resolve_klass_no_update(resolved_klass, pool, index, CHECK);
514 }
515 // Load these early in case the resolve of the containing klass fails
516 Symbol* field = pool->name_ref_at(index);
517 Symbol* sig = pool->signature_ref_at(index);
518 // Check if there's a resolved klass containing the field
519 if( resolved_klass.is_null() ) {
520 ResourceMark rm(THREAD);
521 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
522 }
524 // Resolve instance field
525 fieldDescriptor fd; // find_field initializes fd if found
526 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd));
527 // check if field exists; i.e., if a klass containing the field def has been selected
528 if (sel_klass.is_null()){
529 ResourceMark rm(THREAD);
530 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
531 }
533 // check access
534 KlassHandle ref_klass(THREAD, pool->pool_holder());
535 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK);
537 // check for errors
538 if (is_static != fd.is_static()) {
539 char msg[200];
540 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());
541 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg);
542 }
544 // Final fields can only be accessed from its own class.
545 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) {
546 THROW(vmSymbols::java_lang_IllegalAccessError());
547 }
549 // initialize resolved_klass if necessary
550 // note 1: the klass which declared the field must be initialized (i.e, sel_klass)
551 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99)
552 //
553 // note 2: we don't want to force initialization if we are just checking
554 // if the field access is legal; e.g., during compilation
555 if (is_static && !check_only) {
556 sel_klass->initialize(CHECK);
557 }
559 {
560 HandleMark hm(THREAD);
561 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader());
562 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader());
563 Symbol* signature_ref = pool->signature_ref_at(index);
564 {
565 ResourceMark rm(THREAD);
566 char* failed_type_name =
567 SystemDictionary::check_signature_loaders(signature_ref,
568 ref_loader, sel_loader,
569 false,
570 CHECK);
571 if (failed_type_name != NULL) {
572 const char* msg = "loader constraint violation: when resolving field"
573 " \"%s\" the class loader (instance of %s) of the referring class, "
574 "%s, and the class loader (instance of %s) for the field's resolved "
575 "type, %s, have different Class objects for that type";
576 char* field_name = field->as_C_string();
577 const char* loader1 = SystemDictionary::loader_name(ref_loader());
578 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string();
579 const char* loader2 = SystemDictionary::loader_name(sel_loader());
580 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) +
581 strlen(sel) + strlen(loader2) + strlen(failed_type_name);
582 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
583 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2,
584 failed_type_name);
585 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
586 }
587 }
588 }
590 // return information. note that the klass is set to the actual klass containing the
591 // field, otherwise access of static fields in superclasses will not work.
592 KlassHandle holder (THREAD, fd.field_holder());
593 Symbol* name = fd.name();
594 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags());
595 }
598 //------------------------------------------------------------------------------------------------------------------------
599 // Invoke resolution
600 //
601 // Naming conventions:
602 //
603 // resolved_method the specified method (i.e., static receiver specified via constant pool index)
604 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class)
605 // resolved_klass the specified klass (i.e., specified via constant pool index)
606 // recv_klass the receiver klass
609 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name,
610 Symbol* method_signature, KlassHandle current_klass,
611 bool check_access, bool initialize_class, TRAPS) {
612 methodHandle resolved_method;
613 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
614 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder()));
616 // Initialize klass (this should only happen if everything is ok)
617 if (initialize_class && resolved_klass->should_be_initialized()) {
618 resolved_klass->initialize(CHECK);
619 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
620 }
622 // setup result
623 result.set_static(resolved_klass, resolved_method, CHECK);
624 }
626 // throws linktime exceptions
627 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass,
628 Symbol* method_name, Symbol* method_signature,
629 KlassHandle current_klass, bool check_access, TRAPS) {
631 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
632 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
634 // check if static
635 if (!resolved_method->is_static()) {
636 char buf[200];
637 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
638 resolved_method->name(),
639 resolved_method->signature()));
640 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
641 }
642 }
645 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name,
646 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
647 methodHandle resolved_method;
648 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
649 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK);
650 }
652 // throws linktime exceptions
653 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass,
654 Symbol* method_name, Symbol* method_signature,
655 KlassHandle current_klass, bool check_access, TRAPS) {
657 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
659 // check if method name is <init>, that it is found in same klass as static type
660 if (resolved_method->name() == vmSymbols::object_initializer_name() &&
661 resolved_method->method_holder() != resolved_klass()) {
662 ResourceMark rm(THREAD);
663 Exceptions::fthrow(
664 THREAD_AND_LOCATION,
665 vmSymbols::java_lang_NoSuchMethodError(),
666 "%s: method %s%s not found",
667 resolved_klass->external_name(),
668 resolved_method->name()->as_C_string(),
669 resolved_method->signature()->as_C_string()
670 );
671 return;
672 }
674 // check if not static
675 if (resolved_method->is_static()) {
676 char buf[200];
677 jio_snprintf(buf, sizeof(buf),
678 "Expecting non-static method %s",
679 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
680 resolved_method->name(),
681 resolved_method->signature()));
682 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
683 }
684 }
686 // throws runtime exceptions
687 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
688 KlassHandle current_klass, bool check_access, TRAPS) {
690 // resolved method is selected method unless we have an old-style lookup
691 methodHandle sel_method(THREAD, resolved_method());
693 // check if this is an old-style super call and do a new lookup if so
694 { KlassHandle method_klass = KlassHandle(THREAD,
695 resolved_method->method_holder());
697 if (check_access &&
698 // a) check if ACC_SUPER flag is set for the current class
699 current_klass->is_super() &&
700 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!)
701 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() &&
702 // c) check if the method is not <init>
703 resolved_method->name() != vmSymbols::object_initializer_name()) {
704 // Lookup super method
705 KlassHandle super_klass(THREAD, current_klass->super());
706 lookup_instance_method_in_klasses(sel_method, super_klass,
707 resolved_method->name(),
708 resolved_method->signature(), CHECK);
709 // check if found
710 if (sel_method.is_null()) {
711 ResourceMark rm(THREAD);
712 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
713 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
714 resolved_method->name(),
715 resolved_method->signature()));
716 }
717 }
718 }
720 // check if not static
721 if (sel_method->is_static()) {
722 char buf[200];
723 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
724 resolved_method->name(),
725 resolved_method->signature()));
726 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
727 }
729 // check if abstract
730 if (sel_method->is_abstract()) {
731 ResourceMark rm(THREAD);
732 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
733 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
734 sel_method->name(),
735 sel_method->signature()));
736 }
738 // setup result
739 result.set_static(resolved_klass, sel_method, CHECK);
740 }
742 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass,
743 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass,
744 bool check_access, bool check_null_and_abstract, TRAPS) {
745 methodHandle resolved_method;
746 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
747 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK);
748 }
750 // throws linktime exceptions
751 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass,
752 Symbol* method_name, Symbol* method_signature,
753 KlassHandle current_klass, bool check_access, TRAPS) {
754 // normal method resolution
755 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
757 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
758 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
760 // check if not static
761 if (resolved_method->is_static()) {
762 char buf[200];
763 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
764 resolved_method->name(),
765 resolved_method->signature()));
766 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
767 }
768 }
770 // throws runtime exceptions
771 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
772 methodHandle resolved_method,
773 KlassHandle resolved_klass,
774 Handle recv,
775 KlassHandle recv_klass,
776 bool check_null_and_abstract,
777 TRAPS) {
779 // setup default return values
780 int vtable_index = methodOopDesc::invalid_vtable_index;
781 methodHandle selected_method;
783 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop");
785 // runtime method resolution
786 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists
787 THROW(vmSymbols::java_lang_NullPointerException());
788 }
790 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
791 // has not been rewritten, and the vtable initialized.
792 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
794 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
795 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since
796 // a missing receiver might result in a bogus lookup.
797 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
799 // do lookup based on receiver klass using the vtable index
800 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method
801 vtable_index = vtable_index_of_miranda_method(resolved_klass,
802 resolved_method->name(),
803 resolved_method->signature(), CHECK);
804 assert(vtable_index >= 0 , "we should have valid vtable index at this point");
806 instanceKlass* inst = instanceKlass::cast(recv_klass());
807 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
808 } else {
809 // at this point we are sure that resolved_method is virtual and not
810 // a miranda method; therefore, it must have a valid vtable index.
811 vtable_index = resolved_method->vtable_index();
812 // We could get a negative vtable_index for final methods,
813 // because as an optimization they are they are never put in the vtable,
814 // unless they override an existing method.
815 // If we do get a negative, it means the resolved method is the the selected
816 // method, and it can never be changed by an override.
817 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
818 assert(resolved_method->can_be_statically_bound(), "cannot override this method");
819 selected_method = resolved_method;
820 } else {
821 // recv_klass might be an arrayKlassOop but all vtables start at
822 // the same place. The cast is to avoid virtual call and assertion.
823 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part();
824 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
825 }
826 }
828 // check if method exists
829 if (selected_method.is_null()) {
830 ResourceMark rm(THREAD);
831 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
832 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
833 resolved_method->name(),
834 resolved_method->signature()));
835 }
837 // check if abstract
838 if (check_null_and_abstract && selected_method->is_abstract()) {
839 ResourceMark rm(THREAD);
840 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
841 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
842 selected_method->name(),
843 selected_method->signature()));
844 }
846 // setup result
847 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
848 }
850 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass,
851 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass,
852 bool check_access, bool check_null_and_abstract, TRAPS) {
853 methodHandle resolved_method;
854 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
855 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK);
856 }
858 // throws linktime exceptions
859 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name,
860 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
861 // normal interface method resolution
862 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
864 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
865 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
866 }
868 // throws runtime exceptions
869 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
870 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) {
871 // check if receiver exists
872 if (check_null_and_abstract && recv.is_null()) {
873 THROW(vmSymbols::java_lang_NullPointerException());
874 }
876 // check if receiver klass implements the resolved interface
877 if (!recv_klass->is_subtype_of(resolved_klass())) {
878 char buf[200];
879 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
880 (Klass::cast(recv_klass()))->external_name(),
881 (Klass::cast(resolved_klass()))->external_name());
882 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
883 }
884 // do lookup based on receiver klass
885 methodHandle sel_method;
886 lookup_instance_method_in_klasses(sel_method, recv_klass,
887 resolved_method->name(),
888 resolved_method->signature(), CHECK);
889 // check if method exists
890 if (sel_method.is_null()) {
891 ResourceMark rm(THREAD);
892 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
893 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
894 resolved_method->name(),
895 resolved_method->signature()));
896 }
897 // check if public
898 if (!sel_method->is_public()) {
899 ResourceMark rm(THREAD);
900 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(),
901 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
902 sel_method->name(),
903 sel_method->signature()));
904 }
905 // check if abstract
906 if (check_null_and_abstract && sel_method->is_abstract()) {
907 ResourceMark rm(THREAD);
908 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
909 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
910 sel_method->name(),
911 sel_method->signature()));
912 }
913 // setup result
914 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK);
915 }
918 methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
919 KlassHandle resolved_klass,
920 Symbol* method_name,
921 Symbol* method_signature,
922 KlassHandle current_klass,
923 bool check_access) {
924 EXCEPTION_MARK;
925 methodHandle method_result;
926 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
927 if (HAS_PENDING_EXCEPTION) {
928 CLEAR_PENDING_EXCEPTION;
929 return methodHandle();
930 } else {
931 return method_result;
932 }
933 }
935 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
936 KlassHandle resolved_klass,
937 Symbol* method_name,
938 Symbol* method_signature,
939 KlassHandle current_klass,
940 bool check_access) {
941 EXCEPTION_MARK;
942 methodHandle method_result;
943 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
944 if (HAS_PENDING_EXCEPTION) {
945 CLEAR_PENDING_EXCEPTION;
946 return methodHandle();
947 } else {
948 return method_result;
949 }
950 }
952 methodHandle LinkResolver::resolve_virtual_call_or_null(
953 KlassHandle receiver_klass,
954 KlassHandle resolved_klass,
955 Symbol* name,
956 Symbol* signature,
957 KlassHandle current_klass) {
958 EXCEPTION_MARK;
959 CallInfo info;
960 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
961 if (HAS_PENDING_EXCEPTION) {
962 CLEAR_PENDING_EXCEPTION;
963 return methodHandle();
964 }
965 return info.selected_method();
966 }
968 methodHandle LinkResolver::resolve_interface_call_or_null(
969 KlassHandle receiver_klass,
970 KlassHandle resolved_klass,
971 Symbol* name,
972 Symbol* signature,
973 KlassHandle current_klass) {
974 EXCEPTION_MARK;
975 CallInfo info;
976 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
977 if (HAS_PENDING_EXCEPTION) {
978 CLEAR_PENDING_EXCEPTION;
979 return methodHandle();
980 }
981 return info.selected_method();
982 }
984 int LinkResolver::resolve_virtual_vtable_index(
985 KlassHandle receiver_klass,
986 KlassHandle resolved_klass,
987 Symbol* name,
988 Symbol* signature,
989 KlassHandle current_klass) {
990 EXCEPTION_MARK;
991 CallInfo info;
992 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
993 if (HAS_PENDING_EXCEPTION) {
994 CLEAR_PENDING_EXCEPTION;
995 return methodOopDesc::invalid_vtable_index;
996 }
997 return info.vtable_index();
998 }
1000 methodHandle LinkResolver::resolve_static_call_or_null(
1001 KlassHandle resolved_klass,
1002 Symbol* name,
1003 Symbol* signature,
1004 KlassHandle current_klass) {
1005 EXCEPTION_MARK;
1006 CallInfo info;
1007 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD);
1008 if (HAS_PENDING_EXCEPTION) {
1009 CLEAR_PENDING_EXCEPTION;
1010 return methodHandle();
1011 }
1012 return info.selected_method();
1013 }
1015 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature,
1016 KlassHandle current_klass) {
1017 EXCEPTION_MARK;
1018 CallInfo info;
1019 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD);
1020 if (HAS_PENDING_EXCEPTION) {
1021 CLEAR_PENDING_EXCEPTION;
1022 return methodHandle();
1023 }
1024 return info.selected_method();
1025 }
1029 //------------------------------------------------------------------------------------------------------------------------
1030 // ConstantPool entries
1032 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
1033 switch (byte) {
1034 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break;
1035 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break;
1036 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break;
1037 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break;
1038 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break;
1039 }
1040 return;
1041 }
1043 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature,
1044 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) {
1045 // resolve klass
1046 resolve_klass(resolved_klass, pool, index, CHECK);
1048 // Get name, signature, and static klass
1049 method_name = pool->name_ref_at(index);
1050 method_signature = pool->signature_ref_at(index);
1051 current_klass = KlassHandle(THREAD, pool->pool_holder());
1052 }
1055 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
1056 KlassHandle resolved_klass;
1057 Symbol* method_name = NULL;
1058 Symbol* method_signature = NULL;
1059 KlassHandle current_klass;
1060 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1061 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
1062 }
1065 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
1066 KlassHandle resolved_klass;
1067 Symbol* method_name = NULL;
1068 Symbol* method_signature = NULL;
1069 KlassHandle current_klass;
1070 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1071 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
1072 }
1075 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv,
1076 constantPoolHandle pool, int index,
1077 TRAPS) {
1079 KlassHandle resolved_klass;
1080 Symbol* method_name = NULL;
1081 Symbol* method_signature = NULL;
1082 KlassHandle current_klass;
1083 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1084 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
1085 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
1086 }
1089 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) {
1090 KlassHandle resolved_klass;
1091 Symbol* method_name = NULL;
1092 Symbol* method_signature = NULL;
1093 KlassHandle current_klass;
1094 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1095 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
1096 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
1097 }
1100 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) {
1101 assert(EnableInvokeDynamic, "");
1103 // This guy is reached from InterpreterRuntime::resolve_invokedynamic.
1105 // At this point, we only need the signature, and can ignore the name.
1106 Symbol* method_signature = pool->signature_ref_at(raw_index); // raw_index works directly
1107 Symbol* method_name = vmSymbols::invokeExact_name();
1108 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
1110 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...)
1111 // The extra MH receiver will be inserted into the stack on every call.
1112 methodHandle resolved_method;
1113 KlassHandle current_klass(THREAD, pool->pool_holder());
1114 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK);
1115 if (resolved_method.is_null()) {
1116 THROW(vmSymbols::java_lang_InternalError());
1117 }
1118 result.set_dynamic(resolved_method, CHECK);
1119 }
1121 //------------------------------------------------------------------------------------------------------------------------
1122 #ifndef PRODUCT
1124 void FieldAccessInfo::print() {
1125 ResourceMark rm;
1126 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset());
1127 }
1129 #endif
