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 */
24
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
55
56 //------------------------------------------------------------------------------------------------------------------------
57 // Implementation of FieldAccessInfo
58
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 }
68
69
70 //------------------------------------------------------------------------------------------------------------------------
71 // Implementation of CallInfo
72
73
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 }
78
79
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 }
92
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 }
97
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 }
106
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.
116
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 CompilationPolicy::policy()->initial_compile_level(),
136 methodHandle(), 0, "must_be_compiled", CHECK);
137 }
138 }
139
140
141 //------------------------------------------------------------------------------------------------------------------------
142 // Klass resolution
143
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 }
159
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 }
164
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 }
170
171
172 //------------------------------------------------------------------------------------------------------------------------
173 // Method resolution
174 //
175 // According to JVM spec. $5.4.3c & $5.4.3d
176
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 (EnableInvokeDynamic && 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 }
190
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 }
200
201
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 }
207
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 }
212
213 void LinkResolver::lookup_implicit_method(methodHandle& result,
214 KlassHandle klass, Symbol* name, Symbol* signature,
215 KlassHandle current_klass,
216 TRAPS) {
217 if (EnableInvokeDynamic &&
218 klass() == SystemDictionary::MethodHandle_klass() &&
219 methodOopDesc::is_method_handle_invoke_name(name)) {
220 if (!THREAD->is_Compiler_thread() && !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 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(),
225 Handle(),
226 Handle(),
227 true,
228 CHECK);
229 }
230 }
231 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name,
232 signature,
233 current_klass,
234 CHECK);
235 if (result_oop != NULL) {
236 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature, "consistent");
237 result = methodHandle(THREAD, result_oop);
238 }
239 }
240 }
241
242 void LinkResolver::check_method_accessability(KlassHandle ref_klass,
243 KlassHandle resolved_klass,
244 KlassHandle sel_klass,
245 methodHandle sel_method,
246 TRAPS) {
247
248 AccessFlags flags = sel_method->access_flags();
249
250 // Special case: arrays always override "clone". JVMS 2.15.
251 // If the resolved klass is an array class, and the declaring class
252 // is java.lang.Object and the method is "clone", set the flags
253 // to public.
254 //
255 // We'll check for the method name first, as that's most likely
256 // to be false (so we'll short-circuit out of these tests).
257 if (sel_method->name() == vmSymbols::clone_name() &&
258 sel_klass() == SystemDictionary::Object_klass() &&
259 resolved_klass->oop_is_array()) {
260 // We need to change "protected" to "public".
261 assert(flags.is_protected(), "clone not protected?");
262 jint new_flags = flags.as_int();
263 new_flags = new_flags & (~JVM_ACC_PROTECTED);
264 new_flags = new_flags | JVM_ACC_PUBLIC;
265 flags.set_flags(new_flags);
266 }
267
268 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
269 resolved_klass->as_klassOop(),
270 sel_klass->as_klassOop(),
271 flags,
272 true)) {
273 ResourceMark rm(THREAD);
274 Exceptions::fthrow(
275 THREAD_AND_LOCATION,
276 vmSymbols::java_lang_IllegalAccessError(),
277 "tried to access method %s.%s%s from class %s",
278 sel_klass->external_name(),
279 sel_method->name()->as_C_string(),
280 sel_method->signature()->as_C_string(),
281 ref_klass->external_name()
282 );
283 return;
284 }
285 }
286
287 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass,
288 constantPoolHandle pool, int index, TRAPS) {
289
290 // resolve klass
291 resolve_klass(resolved_klass, pool, index, CHECK);
292
293 Symbol* method_name = pool->name_ref_at(index);
294 Symbol* method_signature = pool->signature_ref_at(index);
295 KlassHandle current_klass(THREAD, pool->pool_holder());
296
297 if (pool->has_preresolution()
298 || (resolved_klass() == SystemDictionary::MethodHandle_klass() &&
299 methodOopDesc::is_method_handle_invoke_name(method_name))) {
300 methodOop result_oop = constantPoolOopDesc::method_at_if_loaded(pool, index);
301 if (result_oop != NULL) {
302 resolved_method = methodHandle(THREAD, result_oop);
303 return;
304 }
305 }
306
307 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
308 }
309
310 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
311 // The class is java.lang.invoke.MethodHandle
312 resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
313
314 Symbol* method_name = vmSymbols::invokeExact_name();
315
316 Symbol* method_signature = pool->signature_ref_at(index);
317 KlassHandle current_klass (THREAD, pool->pool_holder());
318
319 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
320 }
321
322 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) {
323
324 // resolve klass
325 resolve_klass(resolved_klass, pool, index, CHECK);
326 Symbol* method_name = pool->name_ref_at(index);
327 Symbol* method_signature = pool->signature_ref_at(index);
328 KlassHandle current_klass(THREAD, pool->pool_holder());
329
330 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
331 }
332
333
334 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass,
335 Symbol* method_name, Symbol* method_signature,
336 KlassHandle current_klass, bool check_access, TRAPS) {
337
338 // 1. check if klass is not interface
339 if (resolved_klass->is_interface()) {
340 ResourceMark rm(THREAD);
341 char buf[200];
342 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name());
343 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
344 }
345
346 // 2. lookup method in resolved klass and its super klasses
347 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
348
349 if (resolved_method.is_null()) { // not found in the class hierarchy
350 // 3. lookup method in all the interfaces implemented by the resolved klass
351 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
352
353 if (resolved_method.is_null()) {
354 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...)
355 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK);
356 }
357
358 if (resolved_method.is_null()) {
359 // 4. method lookup failed
360 ResourceMark rm(THREAD);
361 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
362 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
363 method_name,
364 method_signature));
365 }
366 }
367
368 // 5. check if method is concrete
369 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) {
370 ResourceMark rm(THREAD);
371 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
372 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
373 method_name,
374 method_signature));
375 }
376
377 // 6. access checks, access checking may be turned off when calling from within the VM.
378 if (check_access) {
379 assert(current_klass.not_null() , "current_klass should not be null");
380
381 // check if method can be accessed by the referring class
382 check_method_accessability(current_klass,
383 resolved_klass,
384 KlassHandle(THREAD, resolved_method->method_holder()),
385 resolved_method,
386 CHECK);
387
388 // check loader constraints
389 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
390 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
391 {
392 ResourceMark rm(THREAD);
393 char* failed_type_name =
394 SystemDictionary::check_signature_loaders(method_signature, loader,
395 class_loader, true, CHECK);
396 if (failed_type_name != NULL) {
397 const char* msg = "loader constraint violation: when resolving method"
398 " \"%s\" the class loader (instance of %s) of the current class, %s,"
399 " and the class loader (instance of %s) for resolved class, %s, have"
400 " different Class objects for the type %s used in the signature";
401 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature);
402 const char* loader1 = SystemDictionary::loader_name(loader());
403 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
404 const char* loader2 = SystemDictionary::loader_name(class_loader());
405 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
406 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
407 strlen(current) + strlen(loader2) + strlen(resolved) +
408 strlen(failed_type_name);
409 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
410 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
411 resolved, failed_type_name);
412 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
413 }
414 }
415 }
416 }
417
418 void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
419 KlassHandle resolved_klass,
420 Symbol* method_name,
421 Symbol* method_signature,
422 KlassHandle current_klass,
423 bool check_access, TRAPS) {
424
425 // check if klass is interface
426 if (!resolved_klass->is_interface()) {
427 ResourceMark rm(THREAD);
428 char buf[200];
429 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name());
430 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
431 }
432
433 // lookup method in this interface or its super, java.lang.Object
434 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK);
435
436 if (resolved_method.is_null()) {
437 // lookup method in all the super-interfaces
438 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
439 if (resolved_method.is_null()) {
440 // no method found
441 ResourceMark rm(THREAD);
442 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
443 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
444 method_name,
445 method_signature));
446 }
447 }
448
449 if (check_access) {
450 HandleMark hm(THREAD);
451 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader());
452 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader());
453 {
454 ResourceMark rm(THREAD);
455 char* failed_type_name =
456 SystemDictionary::check_signature_loaders(method_signature, loader,
457 class_loader, true, CHECK);
458 if (failed_type_name != NULL) {
459 const char* msg = "loader constraint violation: when resolving "
460 "interface method \"%s\" the class loader (instance of %s) of the "
461 "current class, %s, and the class loader (instance of %s) for "
462 "resolved class, %s, have different Class objects for the type %s "
463 "used in the signature";
464 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature);
465 const char* loader1 = SystemDictionary::loader_name(loader());
466 char* current = instanceKlass::cast(current_klass())->name()->as_C_string();
467 const char* loader2 = SystemDictionary::loader_name(class_loader());
468 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string();
469 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
470 strlen(current) + strlen(loader2) + strlen(resolved) +
471 strlen(failed_type_name);
472 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
473 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
474 resolved, failed_type_name);
475 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
476 }
477 }
478 }
479 }
480
481 //------------------------------------------------------------------------------------------------------------------------
482 // Field resolution
483
484 void LinkResolver::check_field_accessability(KlassHandle ref_klass,
485 KlassHandle resolved_klass,
486 KlassHandle sel_klass,
487 fieldDescriptor& fd,
488 TRAPS) {
489 if (!Reflection::verify_field_access(ref_klass->as_klassOop(),
490 resolved_klass->as_klassOop(),
491 sel_klass->as_klassOop(),
492 fd.access_flags(),
493 true)) {
494 ResourceMark rm(THREAD);
495 Exceptions::fthrow(
496 THREAD_AND_LOCATION,
497 vmSymbols::java_lang_IllegalAccessError(),
498 "tried to access field %s.%s from class %s",
499 sel_klass->external_name(),
500 fd.name()->as_C_string(),
501 ref_klass->external_name()
502 );
503 return;
504 }
505 }
506
507 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) {
508 resolve_field(result, pool, index, byte, check_only, true, CHECK);
509 }
510
511 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) {
512 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
513 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode");
514
515 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
516 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic);
517
518 // resolve specified klass
519 KlassHandle resolved_klass;
520 if (update_pool) {
521 resolve_klass(resolved_klass, pool, index, CHECK);
522 } else {
523 resolve_klass_no_update(resolved_klass, pool, index, CHECK);
524 }
525 // Load these early in case the resolve of the containing klass fails
526 Symbol* field = pool->name_ref_at(index);
527 Symbol* sig = pool->signature_ref_at(index);
528 // Check if there's a resolved klass containing the field
529 if( resolved_klass.is_null() ) {
530 ResourceMark rm(THREAD);
531 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
532 }
533
534 // Resolve instance field
535 fieldDescriptor fd; // find_field initializes fd if found
536 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd));
537 // check if field exists; i.e., if a klass containing the field def has been selected
538 if (sel_klass.is_null()){
539 ResourceMark rm(THREAD);
540 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
541 }
542
543 // check access
544 KlassHandle ref_klass(THREAD, pool->pool_holder());
545 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK);
546
547 // check for errors
548 if (is_static != fd.is_static()) {
549 ResourceMark rm(THREAD);
550 char msg[200];
551 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());
552 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg);
553 }
554
555 // Final fields can only be accessed from its own class.
556 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) {
557 THROW(vmSymbols::java_lang_IllegalAccessError());
558 }
559
560 // initialize resolved_klass if necessary
561 // note 1: the klass which declared the field must be initialized (i.e, sel_klass)
562 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99)
563 //
564 // note 2: we don't want to force initialization if we are just checking
565 // if the field access is legal; e.g., during compilation
566 if (is_static && !check_only) {
567 sel_klass->initialize(CHECK);
568 }
569
570 {
571 HandleMark hm(THREAD);
572 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader());
573 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader());
574 Symbol* signature_ref = pool->signature_ref_at(index);
575 {
576 ResourceMark rm(THREAD);
577 char* failed_type_name =
578 SystemDictionary::check_signature_loaders(signature_ref,
579 ref_loader, sel_loader,
580 false,
581 CHECK);
582 if (failed_type_name != NULL) {
583 const char* msg = "loader constraint violation: when resolving field"
584 " \"%s\" the class loader (instance of %s) of the referring class, "
585 "%s, and the class loader (instance of %s) for the field's resolved "
586 "type, %s, have different Class objects for that type";
587 char* field_name = field->as_C_string();
588 const char* loader1 = SystemDictionary::loader_name(ref_loader());
589 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string();
590 const char* loader2 = SystemDictionary::loader_name(sel_loader());
591 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) +
592 strlen(sel) + strlen(loader2) + strlen(failed_type_name);
593 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
594 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2,
595 failed_type_name);
596 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
597 }
598 }
599 }
600
601 // return information. note that the klass is set to the actual klass containing the
602 // field, otherwise access of static fields in superclasses will not work.
603 KlassHandle holder (THREAD, fd.field_holder());
604 Symbol* name = fd.name();
605 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags());
606 }
607
608
609 //------------------------------------------------------------------------------------------------------------------------
610 // Invoke resolution
611 //
612 // Naming conventions:
613 //
614 // resolved_method the specified method (i.e., static receiver specified via constant pool index)
615 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class)
616 // resolved_klass the specified klass (i.e., specified via constant pool index)
617 // recv_klass the receiver klass
618
619
620 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name,
621 Symbol* method_signature, KlassHandle current_klass,
622 bool check_access, bool initialize_class, TRAPS) {
623 methodHandle resolved_method;
624 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
625 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder()));
626
627 // Initialize klass (this should only happen if everything is ok)
628 if (initialize_class && resolved_klass->should_be_initialized()) {
629 resolved_klass->initialize(CHECK);
630 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
631 }
632
633 // setup result
634 result.set_static(resolved_klass, resolved_method, CHECK);
635 }
636
637 // throws linktime exceptions
638 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass,
639 Symbol* method_name, Symbol* method_signature,
640 KlassHandle current_klass, bool check_access, TRAPS) {
641
642 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
643 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
644
645 // check if static
646 if (!resolved_method->is_static()) {
647 ResourceMark rm(THREAD);
648 char buf[200];
649 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
650 resolved_method->name(),
651 resolved_method->signature()));
652 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
653 }
654 }
655
656
657 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name,
658 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
659 methodHandle resolved_method;
660 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
661 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK);
662 }
663
664 // throws linktime exceptions
665 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass,
666 Symbol* method_name, Symbol* method_signature,
667 KlassHandle current_klass, bool check_access, TRAPS) {
668
669 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
670
671 // check if method name is <init>, that it is found in same klass as static type
672 if (resolved_method->name() == vmSymbols::object_initializer_name() &&
673 resolved_method->method_holder() != resolved_klass()) {
674 ResourceMark rm(THREAD);
675 Exceptions::fthrow(
676 THREAD_AND_LOCATION,
677 vmSymbols::java_lang_NoSuchMethodError(),
678 "%s: method %s%s not found",
679 resolved_klass->external_name(),
680 resolved_method->name()->as_C_string(),
681 resolved_method->signature()->as_C_string()
682 );
683 return;
684 }
685
686 // check if not static
687 if (resolved_method->is_static()) {
688 ResourceMark rm(THREAD);
689 char buf[200];
690 jio_snprintf(buf, sizeof(buf),
691 "Expecting non-static method %s",
692 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
693 resolved_method->name(),
694 resolved_method->signature()));
695 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
696 }
697 }
698
699 // throws runtime exceptions
700 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
701 KlassHandle current_klass, bool check_access, TRAPS) {
702
703 // resolved method is selected method unless we have an old-style lookup
704 methodHandle sel_method(THREAD, resolved_method());
705
706 // check if this is an old-style super call and do a new lookup if so
707 { KlassHandle method_klass = KlassHandle(THREAD,
708 resolved_method->method_holder());
709
710 if (check_access &&
711 // a) check if ACC_SUPER flag is set for the current class
712 current_klass->is_super() &&
713 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!)
714 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() &&
715 // c) check if the method is not <init>
716 resolved_method->name() != vmSymbols::object_initializer_name()) {
717 // Lookup super method
718 KlassHandle super_klass(THREAD, current_klass->super());
719 lookup_instance_method_in_klasses(sel_method, super_klass,
720 resolved_method->name(),
721 resolved_method->signature(), CHECK);
722 // check if found
723 if (sel_method.is_null()) {
724 ResourceMark rm(THREAD);
725 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
726 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
727 resolved_method->name(),
728 resolved_method->signature()));
729 }
730 }
731 }
732
733 // check if not static
734 if (sel_method->is_static()) {
735 ResourceMark rm(THREAD);
736 char buf[200];
737 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
738 resolved_method->name(),
739 resolved_method->signature()));
740 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
741 }
742
743 // check if abstract
744 if (sel_method->is_abstract()) {
745 ResourceMark rm(THREAD);
746 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
747 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
748 sel_method->name(),
749 sel_method->signature()));
750 }
751
752 // setup result
753 result.set_static(resolved_klass, sel_method, CHECK);
754 }
755
756 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass,
757 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass,
758 bool check_access, bool check_null_and_abstract, TRAPS) {
759 methodHandle resolved_method;
760 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
761 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK);
762 }
763
764 // throws linktime exceptions
765 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass,
766 Symbol* method_name, Symbol* method_signature,
767 KlassHandle current_klass, bool check_access, TRAPS) {
768 // normal method resolution
769 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
770
771 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
772 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
773
774 // check if not static
775 if (resolved_method->is_static()) {
776 ResourceMark rm(THREAD);
777 char buf[200];
778 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
779 resolved_method->name(),
780 resolved_method->signature()));
781 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
782 }
783 }
784
785 // throws runtime exceptions
786 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
787 methodHandle resolved_method,
788 KlassHandle resolved_klass,
789 Handle recv,
790 KlassHandle recv_klass,
791 bool check_null_and_abstract,
792 TRAPS) {
793
794 // setup default return values
795 int vtable_index = methodOopDesc::invalid_vtable_index;
796 methodHandle selected_method;
797
798 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop");
799
800 // runtime method resolution
801 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists
802 THROW(vmSymbols::java_lang_NullPointerException());
803 }
804
805 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
806 // has not been rewritten, and the vtable initialized.
807 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
808
809 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's
810 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since
811 // a missing receiver might result in a bogus lookup.
812 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked");
813
814 // do lookup based on receiver klass using the vtable index
815 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method
816 vtable_index = vtable_index_of_miranda_method(resolved_klass,
817 resolved_method->name(),
818 resolved_method->signature(), CHECK);
819 assert(vtable_index >= 0 , "we should have valid vtable index at this point");
820
821 instanceKlass* inst = instanceKlass::cast(recv_klass());
822 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
823 } else {
824 // at this point we are sure that resolved_method is virtual and not
825 // a miranda method; therefore, it must have a valid vtable index.
826 vtable_index = resolved_method->vtable_index();
827 // We could get a negative vtable_index for final methods,
828 // because as an optimization they are they are never put in the vtable,
829 // unless they override an existing method.
830 // If we do get a negative, it means the resolved method is the the selected
831 // method, and it can never be changed by an override.
832 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) {
833 assert(resolved_method->can_be_statically_bound(), "cannot override this method");
834 selected_method = resolved_method;
835 } else {
836 // recv_klass might be an arrayKlassOop but all vtables start at
837 // the same place. The cast is to avoid virtual call and assertion.
838 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part();
839 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index));
840 }
841 }
842
843 // check if method exists
844 if (selected_method.is_null()) {
845 ResourceMark rm(THREAD);
846 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
847 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
848 resolved_method->name(),
849 resolved_method->signature()));
850 }
851
852 // check if abstract
853 if (check_null_and_abstract && selected_method->is_abstract()) {
854 ResourceMark rm(THREAD);
855 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
856 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),
857 selected_method->name(),
858 selected_method->signature()));
859 }
860
861 // setup result
862 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
863 }
864
865 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass,
866 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass,
867 bool check_access, bool check_null_and_abstract, TRAPS) {
868 methodHandle resolved_method;
869 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
870 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK);
871 }
872
873 // throws linktime exceptions
874 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name,
875 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
876 // normal interface method resolution
877 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
878
879 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
880 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
881 }
882
883 // throws runtime exceptions
884 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
885 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) {
886 // check if receiver exists
887 if (check_null_and_abstract && recv.is_null()) {
888 THROW(vmSymbols::java_lang_NullPointerException());
889 }
890
891 // check if receiver klass implements the resolved interface
892 if (!recv_klass->is_subtype_of(resolved_klass())) {
893 ResourceMark rm(THREAD);
894 char buf[200];
895 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s",
896 (Klass::cast(recv_klass()))->external_name(),
897 (Klass::cast(resolved_klass()))->external_name());
898 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
899 }
900 // do lookup based on receiver klass
901 methodHandle sel_method;
902 lookup_instance_method_in_klasses(sel_method, recv_klass,
903 resolved_method->name(),
904 resolved_method->signature(), CHECK);
905 // check if method exists
906 if (sel_method.is_null()) {
907 ResourceMark rm(THREAD);
908 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
909 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
910 resolved_method->name(),
911 resolved_method->signature()));
912 }
913 // check if public
914 if (!sel_method->is_public()) {
915 ResourceMark rm(THREAD);
916 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(),
917 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
918 sel_method->name(),
919 sel_method->signature()));
920 }
921 // check if abstract
922 if (check_null_and_abstract && sel_method->is_abstract()) {
923 ResourceMark rm(THREAD);
924 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
925 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()),
926 sel_method->name(),
927 sel_method->signature()));
928 }
929 // setup result
930 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK);
931 }
932
933
934 methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
935 KlassHandle resolved_klass,
936 Symbol* method_name,
937 Symbol* method_signature,
938 KlassHandle current_klass,
939 bool check_access) {
940 EXCEPTION_MARK;
941 methodHandle method_result;
942 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
943 if (HAS_PENDING_EXCEPTION) {
944 CLEAR_PENDING_EXCEPTION;
945 return methodHandle();
946 } else {
947 return method_result;
948 }
949 }
950
951 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
952 KlassHandle resolved_klass,
953 Symbol* method_name,
954 Symbol* method_signature,
955 KlassHandle current_klass,
956 bool check_access) {
957 EXCEPTION_MARK;
958 methodHandle method_result;
959 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
960 if (HAS_PENDING_EXCEPTION) {
961 CLEAR_PENDING_EXCEPTION;
962 return methodHandle();
963 } else {
964 return method_result;
965 }
966 }
967
968 methodHandle LinkResolver::resolve_virtual_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_virtual_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 }
983
984 methodHandle LinkResolver::resolve_interface_call_or_null(
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_interface_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 methodHandle();
996 }
997 return info.selected_method();
998 }
999
1000 int LinkResolver::resolve_virtual_vtable_index(
1001 KlassHandle receiver_klass,
1002 KlassHandle resolved_klass,
1003 Symbol* name,
1004 Symbol* signature,
1005 KlassHandle current_klass) {
1006 EXCEPTION_MARK;
1007 CallInfo info;
1008 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
1009 if (HAS_PENDING_EXCEPTION) {
1010 CLEAR_PENDING_EXCEPTION;
1011 return methodOopDesc::invalid_vtable_index;
1012 }
1013 return info.vtable_index();
1014 }
1015
1016 methodHandle LinkResolver::resolve_static_call_or_null(
1017 KlassHandle resolved_klass,
1018 Symbol* name,
1019 Symbol* signature,
1020 KlassHandle current_klass) {
1021 EXCEPTION_MARK;
1022 CallInfo info;
1023 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD);
1024 if (HAS_PENDING_EXCEPTION) {
1025 CLEAR_PENDING_EXCEPTION;
1026 return methodHandle();
1027 }
1028 return info.selected_method();
1029 }
1030
1031 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature,
1032 KlassHandle current_klass) {
1033 EXCEPTION_MARK;
1034 CallInfo info;
1035 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD);
1036 if (HAS_PENDING_EXCEPTION) {
1037 CLEAR_PENDING_EXCEPTION;
1038 return methodHandle();
1039 }
1040 return info.selected_method();
1041 }
1042
1043
1044
1045 //------------------------------------------------------------------------------------------------------------------------
1046 // ConstantPool entries
1047
1048 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
1049 switch (byte) {
1050 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break;
1051 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break;
1052 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break;
1053 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break;
1054 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break;
1055 }
1056 return;
1057 }
1058
1059 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature,
1060 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) {
1061 // resolve klass
1062 resolve_klass(resolved_klass, pool, index, CHECK);
1063
1064 // Get name, signature, and static klass
1065 method_name = pool->name_ref_at(index);
1066 method_signature = pool->signature_ref_at(index);
1067 current_klass = KlassHandle(THREAD, pool->pool_holder());
1068 }
1069
1070
1071 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
1072 KlassHandle resolved_klass;
1073 Symbol* method_name = NULL;
1074 Symbol* method_signature = NULL;
1075 KlassHandle current_klass;
1076 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1077 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
1078 }
1079
1080
1081 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
1082 KlassHandle resolved_klass;
1083 Symbol* method_name = NULL;
1084 Symbol* method_signature = NULL;
1085 KlassHandle current_klass;
1086 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1087 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
1088 }
1089
1090
1091 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv,
1092 constantPoolHandle pool, int index,
1093 TRAPS) {
1094
1095 KlassHandle resolved_klass;
1096 Symbol* method_name = NULL;
1097 Symbol* method_signature = NULL;
1098 KlassHandle current_klass;
1099 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1100 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
1101 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
1102 }
1103
1104
1105 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) {
1106 KlassHandle resolved_klass;
1107 Symbol* method_name = NULL;
1108 Symbol* method_signature = NULL;
1109 KlassHandle current_klass;
1110 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
1111 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass());
1112 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
1113 }
1114
1115
1116 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) {
1117 assert(EnableInvokeDynamic, "");
1118
1119 // This guy is reached from InterpreterRuntime::resolve_invokedynamic.
1120
1121 // At this point, we only need the signature, and can ignore the name.
1122 Symbol* method_signature = pool->signature_ref_at(raw_index); // raw_index works directly
1123 Symbol* method_name = vmSymbols::invokeExact_name();
1124 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass();
1125
1126 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...)
1127 // The extra MH receiver will be inserted into the stack on every call.
1128 methodHandle resolved_method;
1129 KlassHandle current_klass(THREAD, pool->pool_holder());
1130 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, THREAD);
1131 if (HAS_PENDING_EXCEPTION) {
1132 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) {
1133 // throw these guys, since they are already wrapped
1134 return;
1135 }
1136 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) {
1137 // intercept only LinkageErrors which might have failed to wrap
1138 return;
1139 }
1140 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS.
1141 Handle ex(THREAD, PENDING_EXCEPTION);
1142 CLEAR_PENDING_EXCEPTION;
1143 oop bsme = Klass::cast(SystemDictionary::BootstrapMethodError_klass())->java_mirror();
1144 MethodHandles::raise_exception(Bytecodes::_athrow, ex(), bsme, CHECK);
1145 // java code should not return, but if it does throw out anyway
1146 THROW(vmSymbols::java_lang_InternalError());
1147 }
1148 if (resolved_method.is_null()) {
1149 THROW(vmSymbols::java_lang_InternalError());
1150 }
1151 result.set_dynamic(resolved_method, CHECK);
1152 }
1153
1154 //------------------------------------------------------------------------------------------------------------------------
1155 #ifndef PRODUCT
1156
1157 void FieldAccessInfo::print() {
1158 ResourceMark rm;
1159 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset());
1160 }
1161
1162 #endif