Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 803:27b728fd1281 jdk7-b61
Merge
author | trims |
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date | Thu, 11 Jun 2009 21:01:07 -0700 |
parents | be93aad57795 |
children | 389049f3f393 |
rev | line source |
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0 | 1 /* |
710 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_linkResolver.cpp.incl" | |
27 | |
28 //------------------------------------------------------------------------------------------------------------------------ | |
29 // Implementation of FieldAccessInfo | |
30 | |
31 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset, | |
32 BasicType field_type, AccessFlags access_flags) { | |
33 _klass = klass; | |
34 _name = name; | |
35 _field_index = field_index; | |
36 _field_offset = field_offset; | |
37 _field_type = field_type; | |
38 _access_flags = access_flags; | |
39 } | |
40 | |
41 | |
42 //------------------------------------------------------------------------------------------------------------------------ | |
43 // Implementation of CallInfo | |
44 | |
45 | |
46 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
47 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
48 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
49 } | |
50 | |
51 | |
52 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
53 // This is only called for interface methods. If the resolved_method | |
54 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
55 // we should pick the vtable index from the resolved method. | |
56 // Other than that case, there is no valid vtable index to specify. | |
57 int vtable_index = methodOopDesc::invalid_vtable_index; | |
58 if (resolved_method->method_holder() == SystemDictionary::object_klass()) { | |
59 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); | |
60 vtable_index = resolved_method->vtable_index(); | |
61 } | |
62 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
63 } | |
64 | |
65 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
66 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
68 } | |
69 | |
70 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
71 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
72 _resolved_klass = resolved_klass; | |
73 _selected_klass = selected_klass; | |
74 _resolved_method = resolved_method; | |
75 _selected_method = selected_method; | |
76 _vtable_index = vtable_index; | |
77 if (CompilationPolicy::mustBeCompiled(selected_method)) { | |
78 // Note: with several active threads, the mustBeCompiled may be true | |
79 // while canBeCompiled is false; remove assert | |
80 // assert(CompilationPolicy::canBeCompiled(selected_method), "cannot compile"); | |
81 if (THREAD->is_Compiler_thread()) { | |
82 // don't force compilation, resolve was on behalf of compiler | |
83 return; | |
84 } | |
85 CompileBroker::compile_method(selected_method, InvocationEntryBci, | |
86 methodHandle(), 0, "mustBeCompiled", CHECK); | |
87 } | |
88 } | |
89 | |
90 | |
91 //------------------------------------------------------------------------------------------------------------------------ | |
92 // Klass resolution | |
93 | |
94 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
95 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
96 sel_klass->as_klassOop(), | |
97 true)) { | |
98 ResourceMark rm(THREAD); | |
99 Exceptions::fthrow( | |
100 THREAD_AND_LOCATION, | |
101 vmSymbolHandles::java_lang_IllegalAccessError(), | |
102 "tried to access class %s from class %s", | |
103 sel_klass->external_name(), | |
104 ref_klass->external_name() | |
105 ); | |
106 return; | |
107 } | |
108 } | |
109 | |
110 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
111 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
112 result = KlassHandle(THREAD, result_oop); | |
113 } | |
114 | |
115 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
116 klassOop result_oop = | |
117 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
118 result = KlassHandle(THREAD, result_oop); | |
119 } | |
120 | |
121 | |
122 //------------------------------------------------------------------------------------------------------------------------ | |
123 // Method resolution | |
124 // | |
125 // According to JVM spec. $5.4.3c & $5.4.3d | |
126 | |
127 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
128 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
129 result = methodHandle(THREAD, result_oop); | |
130 } | |
131 | |
132 // returns first instance method | |
133 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
134 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
135 result = methodHandle(THREAD, result_oop); | |
136 while (!result.is_null() && result->is_static()) { | |
137 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
138 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); | |
139 } | |
140 } | |
141 | |
142 | |
143 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
144 ResourceMark rm(THREAD); | |
145 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
146 return vt->index_of_miranda(name(), signature()); | |
147 } | |
148 | |
149 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
150 instanceKlass *ik = instanceKlass::cast(klass()); | |
151 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); | |
152 } | |
153 | |
710 | 154 void LinkResolver::lookup_implicit_method(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { |
155 if (EnableMethodHandles && MethodHandles::enabled() && | |
156 name == vmSymbolHandles::invoke_name() && klass() == SystemDictionary::MethodHandle_klass()) { | |
157 methodOop result_oop = SystemDictionary::find_method_handle_invoke(signature, | |
158 Handle(), | |
159 Handle(), | |
160 CHECK); | |
161 if (result_oop != NULL) { | |
162 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); | |
163 result = methodHandle(THREAD, result_oop); | |
164 } | |
165 } | |
166 } | |
167 | |
0 | 168 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
169 KlassHandle resolved_klass, | |
170 KlassHandle sel_klass, | |
171 methodHandle sel_method, | |
172 TRAPS) { | |
173 | |
174 AccessFlags flags = sel_method->access_flags(); | |
175 | |
176 // Special case: arrays always override "clone". JVMS 2.15. | |
177 // If the resolved klass is an array class, and the declaring class | |
178 // is java.lang.Object and the method is "clone", set the flags | |
179 // to public. | |
180 // | |
181 // We'll check for the method name first, as that's most likely | |
182 // to be false (so we'll short-circuit out of these tests). | |
183 if (sel_method->name() == vmSymbols::clone_name() && | |
184 sel_klass() == SystemDictionary::object_klass() && | |
185 resolved_klass->oop_is_array()) { | |
186 // We need to change "protected" to "public". | |
187 assert(flags.is_protected(), "clone not protected?"); | |
188 jint new_flags = flags.as_int(); | |
189 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
190 new_flags = new_flags | JVM_ACC_PUBLIC; | |
191 flags.set_flags(new_flags); | |
192 } | |
193 | |
194 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
195 resolved_klass->as_klassOop(), | |
196 sel_klass->as_klassOop(), | |
197 flags, | |
198 true)) { | |
199 ResourceMark rm(THREAD); | |
200 Exceptions::fthrow( | |
201 THREAD_AND_LOCATION, | |
202 vmSymbolHandles::java_lang_IllegalAccessError(), | |
203 "tried to access method %s.%s%s from class %s", | |
204 sel_klass->external_name(), | |
205 sel_method->name()->as_C_string(), | |
206 sel_method->signature()->as_C_string(), | |
207 ref_klass->external_name() | |
208 ); | |
209 return; | |
210 } | |
211 } | |
212 | |
213 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
214 constantPoolHandle pool, int index, TRAPS) { | |
215 | |
216 // resolve klass | |
217 resolve_klass(resolved_klass, pool, index, CHECK); | |
218 | |
219 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
220 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
221 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
222 | |
223 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
224 } | |
225 | |
226 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { | |
227 | |
228 // resolve klass | |
229 resolve_klass(resolved_klass, pool, index, CHECK); | |
230 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
231 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
232 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
233 | |
234 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
235 } | |
236 | |
237 | |
238 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
239 symbolHandle method_name, symbolHandle method_signature, | |
240 KlassHandle current_klass, bool check_access, TRAPS) { | |
241 | |
242 // 1. check if klass is not interface | |
243 if (resolved_klass->is_interface()) { | |
244 char buf[200]; | |
245 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
246 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
247 } | |
248 | |
249 // 2. lookup method in resolved klass and its super klasses | |
250 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
251 | |
252 if (resolved_method.is_null()) { // not found in the class hierarchy | |
253 // 3. lookup method in all the interfaces implemented by the resolved klass | |
254 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
255 | |
256 if (resolved_method.is_null()) { | |
710 | 257 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
258 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
259 } | |
260 | |
261 if (resolved_method.is_null()) { | |
0 | 262 // 4. method lookup failed |
263 ResourceMark rm(THREAD); | |
264 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
265 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
266 method_name(), | |
267 method_signature())); | |
268 } | |
269 } | |
270 | |
271 // 5. check if method is concrete | |
272 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
273 ResourceMark rm(THREAD); | |
274 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
275 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
276 method_name(), | |
277 method_signature())); | |
278 } | |
279 | |
280 // 6. access checks, access checking may be turned off when calling from within the VM. | |
281 if (check_access) { | |
282 assert(current_klass.not_null() , "current_klass should not be null"); | |
283 | |
284 // check if method can be accessed by the referring class | |
285 check_method_accessability(current_klass, | |
286 resolved_klass, | |
287 KlassHandle(THREAD, resolved_method->method_holder()), | |
288 resolved_method, | |
289 CHECK); | |
290 | |
291 // check loader constraints | |
292 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
293 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
294 { | |
295 ResourceMark rm(THREAD); | |
296 char* failed_type_name = | |
297 SystemDictionary::check_signature_loaders(method_signature, loader, | |
298 class_loader, true, CHECK); | |
299 if (failed_type_name != NULL) { | |
300 const char* msg = "loader constraint violation: when resolving method" | |
301 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
302 " and the class loader (instance of %s) for resolved class, %s, have" | |
303 " different Class objects for the type %s used in the signature"; | |
304 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
305 const char* loader1 = SystemDictionary::loader_name(loader()); | |
306 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
307 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
308 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
309 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
310 strlen(current) + strlen(loader2) + strlen(resolved) + | |
311 strlen(failed_type_name); | |
312 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
313 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
314 resolved, failed_type_name); | |
315 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
316 } | |
317 } | |
318 } | |
319 } | |
320 | |
321 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
322 KlassHandle resolved_klass, | |
323 symbolHandle method_name, | |
324 symbolHandle method_signature, | |
325 KlassHandle current_klass, | |
326 bool check_access, TRAPS) { | |
327 | |
328 // check if klass is interface | |
329 if (!resolved_klass->is_interface()) { | |
330 char buf[200]; | |
331 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
332 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
333 } | |
334 | |
335 // lookup method in this interface or its super, java.lang.Object | |
336 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
337 | |
338 if (resolved_method.is_null()) { | |
339 // lookup method in all the super-interfaces | |
340 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
341 if (resolved_method.is_null()) { | |
342 // no method found | |
343 ResourceMark rm(THREAD); | |
344 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
345 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
346 method_name(), | |
347 method_signature())); | |
348 } | |
349 } | |
350 | |
351 if (check_access) { | |
352 HandleMark hm(THREAD); | |
353 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
354 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
355 { | |
356 ResourceMark rm(THREAD); | |
357 char* failed_type_name = | |
358 SystemDictionary::check_signature_loaders(method_signature, loader, | |
359 class_loader, true, CHECK); | |
360 if (failed_type_name != NULL) { | |
361 const char* msg = "loader constraint violation: when resolving " | |
362 "interface method \"%s\" the class loader (instance of %s) of the " | |
363 "current class, %s, and the class loader (instance of %s) for " | |
364 "resolved class, %s, have different Class objects for the type %s " | |
365 "used in the signature"; | |
366 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
367 const char* loader1 = SystemDictionary::loader_name(loader()); | |
368 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
369 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
370 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
371 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
372 strlen(current) + strlen(loader2) + strlen(resolved) + | |
373 strlen(failed_type_name); | |
374 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
375 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
376 resolved, failed_type_name); | |
377 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
378 } | |
379 } | |
380 } | |
381 } | |
382 | |
383 //------------------------------------------------------------------------------------------------------------------------ | |
384 // Field resolution | |
385 | |
386 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
387 KlassHandle resolved_klass, | |
388 KlassHandle sel_klass, | |
389 fieldDescriptor& fd, | |
390 TRAPS) { | |
391 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
392 resolved_klass->as_klassOop(), | |
393 sel_klass->as_klassOop(), | |
394 fd.access_flags(), | |
395 true)) { | |
396 ResourceMark rm(THREAD); | |
397 Exceptions::fthrow( | |
398 THREAD_AND_LOCATION, | |
399 vmSymbolHandles::java_lang_IllegalAccessError(), | |
400 "tried to access field %s.%s from class %s", | |
401 sel_klass->external_name(), | |
402 fd.name()->as_C_string(), | |
403 ref_klass->external_name() | |
404 ); | |
405 return; | |
406 } | |
407 } | |
408 | |
409 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
410 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
411 } | |
412 | |
413 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
414 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
415 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
416 | |
417 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
418 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
419 | |
420 // resolve specified klass | |
421 KlassHandle resolved_klass; | |
422 if (update_pool) { | |
423 resolve_klass(resolved_klass, pool, index, CHECK); | |
424 } else { | |
425 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
426 } | |
427 // Load these early in case the resolve of the containing klass fails | |
428 symbolOop field = pool->name_ref_at(index); | |
429 symbolHandle field_h (THREAD, field); // preserve in case we need the name | |
430 symbolOop sig = pool->signature_ref_at(index); | |
431 // Check if there's a resolved klass containing the field | |
432 if( resolved_klass.is_null() ) { | |
433 ResourceMark rm(THREAD); | |
434 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
435 } | |
436 | |
437 // Resolve instance field | |
438 fieldDescriptor fd; // find_field initializes fd if found | |
439 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
440 // check if field exists; i.e., if a klass containing the field def has been selected | |
441 if (sel_klass.is_null()){ | |
442 ResourceMark rm(THREAD); | |
443 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
444 } | |
445 | |
446 // check access | |
447 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
448 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
449 | |
450 // check for errors | |
451 if (is_static != fd.is_static()) { | |
452 char msg[200]; | |
453 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()); | |
454 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
455 } | |
456 | |
457 // Final fields can only be accessed from its own class. | |
458 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
459 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
460 } | |
461 | |
462 // initialize resolved_klass if necessary | |
463 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
464 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
465 // | |
466 // note 2: we don't want to force initialization if we are just checking | |
467 // if the field access is legal; e.g., during compilation | |
468 if (is_static && !check_only) { | |
469 sel_klass->initialize(CHECK); | |
470 } | |
471 | |
472 { | |
473 HandleMark hm(THREAD); | |
474 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
475 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
476 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); | |
477 { | |
478 ResourceMark rm(THREAD); | |
479 char* failed_type_name = | |
480 SystemDictionary::check_signature_loaders(signature_ref, | |
481 ref_loader, sel_loader, | |
482 false, | |
483 CHECK); | |
484 if (failed_type_name != NULL) { | |
485 const char* msg = "loader constraint violation: when resolving field" | |
486 " \"%s\" the class loader (instance of %s) of the referring class, " | |
487 "%s, and the class loader (instance of %s) for the field's resolved " | |
488 "type, %s, have different Class objects for that type"; | |
489 char* field_name = field_h()->as_C_string(); | |
490 const char* loader1 = SystemDictionary::loader_name(ref_loader()); | |
491 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
492 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
493 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
494 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
495 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
496 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
497 failed_type_name); | |
498 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
499 } | |
500 } | |
501 } | |
502 | |
503 // return information. note that the klass is set to the actual klass containing the | |
504 // field, otherwise access of static fields in superclasses will not work. | |
505 KlassHandle holder (THREAD, fd.field_holder()); | |
506 symbolHandle name (THREAD, fd.name()); | |
507 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); | |
508 } | |
509 | |
510 | |
511 //------------------------------------------------------------------------------------------------------------------------ | |
512 // Invoke resolution | |
513 // | |
514 // Naming conventions: | |
515 // | |
516 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
517 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
518 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
519 // recv_klass the receiver klass | |
520 | |
521 | |
522 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, | |
523 symbolHandle method_signature, KlassHandle current_klass, | |
524 bool check_access, bool initialize_class, TRAPS) { | |
525 methodHandle resolved_method; | |
526 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
527 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
528 | |
529 // Initialize klass (this should only happen if everything is ok) | |
530 if (initialize_class && resolved_klass->should_be_initialized()) { | |
531 resolved_klass->initialize(CHECK); | |
532 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
533 } | |
534 | |
535 // setup result | |
536 result.set_static(resolved_klass, resolved_method, CHECK); | |
537 } | |
538 | |
539 // throws linktime exceptions | |
540 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
541 symbolHandle method_name, symbolHandle method_signature, | |
542 KlassHandle current_klass, bool check_access, TRAPS) { | |
543 | |
544 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
545 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
546 | |
547 // check if static | |
548 if (!resolved_method->is_static()) { | |
549 char buf[200]; | |
550 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
551 resolved_method->name(), | |
552 resolved_method->signature())); | |
553 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
554 } | |
555 } | |
556 | |
557 | |
558 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, | |
559 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
560 methodHandle resolved_method; | |
561 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
562 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
563 } | |
564 | |
565 // throws linktime exceptions | |
566 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
567 symbolHandle method_name, symbolHandle method_signature, | |
568 KlassHandle current_klass, bool check_access, TRAPS) { | |
569 | |
570 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
571 | |
572 // check if method name is <init>, that it is found in same klass as static type | |
573 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
574 resolved_method->method_holder() != resolved_klass()) { | |
575 ResourceMark rm(THREAD); | |
576 Exceptions::fthrow( | |
577 THREAD_AND_LOCATION, | |
578 vmSymbolHandles::java_lang_NoSuchMethodError(), | |
579 "%s: method %s%s not found", | |
580 resolved_klass->external_name(), | |
581 resolved_method->name()->as_C_string(), | |
582 resolved_method->signature()->as_C_string() | |
583 ); | |
584 return; | |
585 } | |
586 | |
587 // check if not static | |
588 if (resolved_method->is_static()) { | |
589 char buf[200]; | |
590 jio_snprintf(buf, sizeof(buf), | |
591 "Expecting non-static method %s", | |
592 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
593 resolved_method->name(), | |
594 resolved_method->signature())); | |
595 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
596 } | |
597 } | |
598 | |
599 // throws runtime exceptions | |
600 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
601 KlassHandle current_klass, bool check_access, TRAPS) { | |
602 | |
603 // resolved method is selected method unless we have an old-style lookup | |
604 methodHandle sel_method(THREAD, resolved_method()); | |
605 | |
606 // check if this is an old-style super call and do a new lookup if so | |
607 { KlassHandle method_klass = KlassHandle(THREAD, | |
608 resolved_method->method_holder()); | |
609 | |
610 if (check_access && | |
611 // a) check if ACC_SUPER flag is set for the current class | |
612 current_klass->is_super() && | |
613 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
614 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
615 // c) check if the method is not <init> | |
616 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
617 // Lookup super method | |
618 KlassHandle super_klass(THREAD, current_klass->super()); | |
619 lookup_instance_method_in_klasses(sel_method, super_klass, | |
620 symbolHandle(THREAD, resolved_method->name()), | |
621 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
622 // check if found | |
623 if (sel_method.is_null()) { | |
624 ResourceMark rm(THREAD); | |
625 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
626 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
627 resolved_method->name(), | |
628 resolved_method->signature())); | |
629 } | |
630 } | |
631 } | |
632 | |
633 // check if not static | |
634 if (sel_method->is_static()) { | |
635 char buf[200]; | |
636 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
637 resolved_method->name(), | |
638 resolved_method->signature())); | |
639 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
640 } | |
641 | |
642 // check if abstract | |
643 if (sel_method->is_abstract()) { | |
644 ResourceMark rm(THREAD); | |
645 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
646 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
647 sel_method->name(), | |
648 sel_method->signature())); | |
649 } | |
650 | |
651 // setup result | |
652 result.set_static(resolved_klass, sel_method, CHECK); | |
653 } | |
654 | |
655 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
656 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
657 bool check_access, bool check_null_and_abstract, TRAPS) { | |
658 methodHandle resolved_method; | |
659 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
660 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
661 } | |
662 | |
663 // throws linktime exceptions | |
664 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
665 symbolHandle method_name, symbolHandle method_signature, | |
666 KlassHandle current_klass, bool check_access, TRAPS) { | |
667 // normal method resolution | |
668 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
669 | |
670 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
671 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
672 | |
673 // check if not static | |
674 if (resolved_method->is_static()) { | |
675 char buf[200]; | |
676 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
677 resolved_method->name(), | |
678 resolved_method->signature())); | |
679 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
680 } | |
681 } | |
682 | |
683 // throws runtime exceptions | |
684 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
685 methodHandle resolved_method, | |
686 KlassHandle resolved_klass, | |
687 Handle recv, | |
688 KlassHandle recv_klass, | |
689 bool check_null_and_abstract, | |
690 TRAPS) { | |
691 | |
692 // setup default return values | |
693 int vtable_index = methodOopDesc::invalid_vtable_index; | |
694 methodHandle selected_method; | |
695 | |
696 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
697 | |
698 // runtime method resolution | |
699 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
700 THROW(vmSymbols::java_lang_NullPointerException()); | |
701 } | |
702 | |
703 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
704 // has not been rewritten, and the vtable initialized. | |
705 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
706 | |
707 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
708 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
709 // a missing receiver might result in a bogus lookup. | |
710 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
711 | |
712 // do lookup based on receiver klass using the vtable index | |
713 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
714 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
715 symbolHandle(THREAD, resolved_method->name()), | |
716 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
717 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); | |
718 | |
719 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
720 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
721 } else { | |
722 // at this point we are sure that resolved_method is virtual and not | |
723 // a miranda method; therefore, it must have a valid vtable index. | |
724 vtable_index = resolved_method->vtable_index(); | |
725 // We could get a negative vtable_index for final methods, | |
726 // because as an optimization they are they are never put in the vtable, | |
727 // unless they override an existing method. | |
728 // If we do get a negative, it means the resolved method is the the selected | |
729 // method, and it can never be changed by an override. | |
730 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
731 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
732 selected_method = resolved_method; | |
733 } else { | |
734 // recv_klass might be an arrayKlassOop but all vtables start at | |
735 // the same place. The cast is to avoid virtual call and assertion. | |
736 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
737 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
738 } | |
739 } | |
740 | |
741 // check if method exists | |
742 if (selected_method.is_null()) { | |
743 ResourceMark rm(THREAD); | |
744 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
745 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
746 resolved_method->name(), | |
747 resolved_method->signature())); | |
748 } | |
749 | |
750 // check if abstract | |
751 if (check_null_and_abstract && selected_method->is_abstract()) { | |
752 ResourceMark rm(THREAD); | |
753 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
754 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
755 selected_method->name(), | |
756 selected_method->signature())); | |
757 } | |
758 | |
759 // setup result | |
760 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
761 } | |
762 | |
763 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
764 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
765 bool check_access, bool check_null_and_abstract, TRAPS) { | |
766 methodHandle resolved_method; | |
767 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
768 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
769 } | |
770 | |
771 // throws linktime exceptions | |
772 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, | |
773 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
774 // normal interface method resolution | |
775 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
776 | |
777 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
778 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
779 } | |
780 | |
781 // throws runtime exceptions | |
782 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
783 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
784 // check if receiver exists | |
785 if (check_null_and_abstract && recv.is_null()) { | |
786 THROW(vmSymbols::java_lang_NullPointerException()); | |
787 } | |
788 | |
789 // check if receiver klass implements the resolved interface | |
790 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
791 char buf[200]; | |
792 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
793 (Klass::cast(recv_klass()))->external_name(), | |
794 (Klass::cast(resolved_klass()))->external_name()); | |
795 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
796 } | |
797 // do lookup based on receiver klass | |
798 methodHandle sel_method; | |
799 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
800 symbolHandle(THREAD, resolved_method->name()), | |
801 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
802 // check if method exists | |
803 if (sel_method.is_null()) { | |
804 ResourceMark rm(THREAD); | |
805 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
806 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
807 resolved_method->name(), | |
808 resolved_method->signature())); | |
809 } | |
810 // check if public | |
811 if (!sel_method->is_public()) { | |
812 ResourceMark rm(THREAD); | |
813 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
814 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
815 sel_method->name(), | |
816 sel_method->signature())); | |
817 } | |
818 // check if abstract | |
819 if (check_null_and_abstract && sel_method->is_abstract()) { | |
820 ResourceMark rm(THREAD); | |
821 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
822 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
823 sel_method->name(), | |
824 sel_method->signature())); | |
825 } | |
826 // setup result | |
827 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
828 } | |
829 | |
830 | |
831 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
832 KlassHandle resolved_klass, | |
833 symbolHandle method_name, | |
834 symbolHandle method_signature, | |
835 KlassHandle current_klass, | |
836 bool check_access) { | |
837 EXCEPTION_MARK; | |
838 methodHandle method_result; | |
839 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
840 if (HAS_PENDING_EXCEPTION) { | |
841 CLEAR_PENDING_EXCEPTION; | |
842 return methodHandle(); | |
843 } else { | |
844 return method_result; | |
845 } | |
846 } | |
847 | |
848 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
849 KlassHandle resolved_klass, | |
850 symbolHandle method_name, | |
851 symbolHandle method_signature, | |
852 KlassHandle current_klass, | |
853 bool check_access) { | |
854 EXCEPTION_MARK; | |
855 methodHandle method_result; | |
856 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
857 if (HAS_PENDING_EXCEPTION) { | |
858 CLEAR_PENDING_EXCEPTION; | |
859 return methodHandle(); | |
860 } else { | |
861 return method_result; | |
862 } | |
863 } | |
864 | |
865 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
866 KlassHandle receiver_klass, | |
867 KlassHandle resolved_klass, | |
868 symbolHandle name, | |
869 symbolHandle signature, | |
870 KlassHandle current_klass) { | |
871 EXCEPTION_MARK; | |
872 CallInfo info; | |
873 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
874 if (HAS_PENDING_EXCEPTION) { | |
875 CLEAR_PENDING_EXCEPTION; | |
876 return methodHandle(); | |
877 } | |
878 return info.selected_method(); | |
879 } | |
880 | |
881 methodHandle LinkResolver::resolve_interface_call_or_null( | |
882 KlassHandle receiver_klass, | |
883 KlassHandle resolved_klass, | |
884 symbolHandle name, | |
885 symbolHandle signature, | |
886 KlassHandle current_klass) { | |
887 EXCEPTION_MARK; | |
888 CallInfo info; | |
889 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
890 if (HAS_PENDING_EXCEPTION) { | |
891 CLEAR_PENDING_EXCEPTION; | |
892 return methodHandle(); | |
893 } | |
894 return info.selected_method(); | |
895 } | |
896 | |
897 int LinkResolver::resolve_virtual_vtable_index( | |
898 KlassHandle receiver_klass, | |
899 KlassHandle resolved_klass, | |
900 symbolHandle name, | |
901 symbolHandle signature, | |
902 KlassHandle current_klass) { | |
903 EXCEPTION_MARK; | |
904 CallInfo info; | |
905 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
906 if (HAS_PENDING_EXCEPTION) { | |
907 CLEAR_PENDING_EXCEPTION; | |
908 return methodOopDesc::invalid_vtable_index; | |
909 } | |
910 return info.vtable_index(); | |
911 } | |
912 | |
913 methodHandle LinkResolver::resolve_static_call_or_null( | |
914 KlassHandle resolved_klass, | |
915 symbolHandle name, | |
916 symbolHandle signature, | |
917 KlassHandle current_klass) { | |
918 EXCEPTION_MARK; | |
919 CallInfo info; | |
920 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
921 if (HAS_PENDING_EXCEPTION) { | |
922 CLEAR_PENDING_EXCEPTION; | |
923 return methodHandle(); | |
924 } | |
925 return info.selected_method(); | |
926 } | |
927 | |
928 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, | |
929 KlassHandle current_klass) { | |
930 EXCEPTION_MARK; | |
931 CallInfo info; | |
932 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
933 if (HAS_PENDING_EXCEPTION) { | |
934 CLEAR_PENDING_EXCEPTION; | |
935 return methodHandle(); | |
936 } | |
937 return info.selected_method(); | |
938 } | |
939 | |
940 | |
941 | |
942 //------------------------------------------------------------------------------------------------------------------------ | |
943 // ConstantPool entries | |
944 | |
945 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
946 switch (byte) { | |
947 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
948 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
949 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
726
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950 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 951 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
952 } | |
953 return; | |
954 } | |
955 | |
956 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, | |
957 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { | |
958 // resolve klass | |
959 resolve_klass(resolved_klass, pool, index, CHECK); | |
960 | |
961 // Get name, signature, and static klass | |
962 method_name = symbolHandle(THREAD, pool->name_ref_at(index)); | |
963 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); | |
964 current_klass = KlassHandle(THREAD, pool->pool_holder()); | |
965 } | |
966 | |
967 | |
968 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
969 KlassHandle resolved_klass; | |
970 symbolHandle method_name; | |
971 symbolHandle method_signature; | |
972 KlassHandle current_klass; | |
973 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
974 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
975 } | |
976 | |
977 | |
978 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
979 KlassHandle resolved_klass; | |
980 symbolHandle method_name; | |
981 symbolHandle method_signature; | |
982 KlassHandle current_klass; | |
983 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
984 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
985 } | |
986 | |
987 | |
988 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
989 constantPoolHandle pool, int index, | |
990 TRAPS) { | |
991 | |
992 KlassHandle resolved_klass; | |
993 symbolHandle method_name; | |
994 symbolHandle method_signature; | |
995 KlassHandle current_klass; | |
996 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
997 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
998 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
999 } | |
1000 | |
1001 | |
1002 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1003 KlassHandle resolved_klass; | |
1004 symbolHandle method_name; | |
1005 symbolHandle method_signature; | |
1006 KlassHandle current_klass; | |
1007 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1008 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1009 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1010 } | |
1011 | |
726
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1012 |
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1013 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1014 assert(EnableInvokeDynamic, ""); |
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1015 |
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1016 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1017 |
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1018 assert(constantPoolCacheOopDesc::is_secondary_index(raw_index), "must be secondary index"); |
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1019 int nt_index = pool->map_instruction_operand_to_index(raw_index); |
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1020 |
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1021 // At this point, we only need the signature, and can ignore the name. |
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1022 symbolHandle method_signature(THREAD, pool->nt_signature_ref_at(nt_index)); |
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1023 symbolHandle method_name = vmSymbolHandles::invoke_name(); |
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1024 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1025 |
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1026 // JSR 292: this must be an implicitly generated method MethodHandle.invoke(*...) |
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1027 // The extra MH receiver will be inserted into the stack on every call. |
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1028 methodHandle resolved_method; |
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1029 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
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1030 if (resolved_method.is_null()) { |
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1031 THROW(vmSymbols::java_lang_InternalError()); |
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1032 } |
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1033 result.set_virtual(resolved_klass, KlassHandle(), resolved_method, resolved_method, resolved_method->vtable_index(), CHECK); |
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1034 } |
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1035 |
0 | 1036 //------------------------------------------------------------------------------------------------------------------------ |
1037 #ifndef PRODUCT | |
1038 | |
1039 void FieldAccessInfo::print() { | |
1040 ResourceMark rm; | |
1041 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1042 } | |
1043 | |
1044 #endif |