Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 1891:9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
Summary: Turn CDS off if compressed oops is on
Reviewed-by: ysr, kvn, jcoomes, phh
author | iveresov |
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date | Tue, 02 Nov 2010 16:02:46 -0700 |
parents | d5d065957597 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
1783 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 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; | |
1142 | 58 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
0 | 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 | |
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70 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) { |
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71 assert(resolved_method->is_method_handle_invoke(), ""); |
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72 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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73 assert(resolved_klass == resolved_method->method_holder(), ""); |
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74 int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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75 assert(resolved_method->vtable_index() == vtable_index, ""); |
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76 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK); |
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77 } |
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78 |
0 | 79 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
80 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
81 _resolved_klass = resolved_klass; | |
82 _selected_klass = selected_klass; | |
83 _resolved_method = resolved_method; | |
84 _selected_method = selected_method; | |
85 _vtable_index = vtable_index; | |
1783 | 86 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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87 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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88 |
1783 | 89 // Note: with several active threads, the must_be_compiled may be true |
90 // while can_be_compiled is false; remove assert | |
91 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 92 if (THREAD->is_Compiler_thread()) { |
93 // don't force compilation, resolve was on behalf of compiler | |
94 return; | |
95 } | |
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96 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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97 // 'is_not_initialized' means not only '!is_initialized', but also that |
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98 // initialization has not been started yet ('!being_initialized') |
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99 // Do not force compilation of methods in uninitialized classes. |
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100 // Note that doing this would throw an assert later, |
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101 // in CompileBroker::compile_method. |
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102 // We sometimes use the link resolver to do reflective lookups |
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103 // even before classes are initialized. |
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104 return; |
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105 } |
0 | 106 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
1783 | 107 CompLevel_initial_compile, |
108 methodHandle(), 0, "must_be_compiled", CHECK); | |
0 | 109 } |
110 } | |
111 | |
112 | |
113 //------------------------------------------------------------------------------------------------------------------------ | |
114 // Klass resolution | |
115 | |
116 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
117 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
118 sel_klass->as_klassOop(), | |
119 true)) { | |
120 ResourceMark rm(THREAD); | |
121 Exceptions::fthrow( | |
122 THREAD_AND_LOCATION, | |
123 vmSymbolHandles::java_lang_IllegalAccessError(), | |
124 "tried to access class %s from class %s", | |
125 sel_klass->external_name(), | |
126 ref_klass->external_name() | |
127 ); | |
128 return; | |
129 } | |
130 } | |
131 | |
132 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
133 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
134 result = KlassHandle(THREAD, result_oop); | |
135 } | |
136 | |
137 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
138 klassOop result_oop = | |
139 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
140 result = KlassHandle(THREAD, result_oop); | |
141 } | |
142 | |
143 | |
144 //------------------------------------------------------------------------------------------------------------------------ | |
145 // Method resolution | |
146 // | |
147 // According to JVM spec. $5.4.3c & $5.4.3d | |
148 | |
149 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
150 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
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151 if (EnableMethodHandles && result_oop != NULL) { |
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152 switch (result_oop->intrinsic_id()) { |
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153 case vmIntrinsics::_invokeExact: |
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154 case vmIntrinsics::_invokeGeneric: |
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155 case vmIntrinsics::_invokeDynamic: |
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156 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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157 return; |
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158 } |
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159 } |
0 | 160 result = methodHandle(THREAD, result_oop); |
161 } | |
162 | |
163 // returns first instance method | |
164 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
165 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
166 result = methodHandle(THREAD, result_oop); | |
167 while (!result.is_null() && result->is_static()) { | |
168 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
169 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); | |
170 } | |
171 } | |
172 | |
173 | |
174 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
175 ResourceMark rm(THREAD); | |
176 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
177 return vt->index_of_miranda(name(), signature()); | |
178 } | |
179 | |
180 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
181 instanceKlass *ik = instanceKlass::cast(klass()); | |
182 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); | |
183 } | |
184 | |
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185 void LinkResolver::lookup_implicit_method(methodHandle& result, |
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186 KlassHandle klass, symbolHandle name, symbolHandle signature, |
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187 KlassHandle current_klass, |
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188 TRAPS) { |
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189 if (EnableMethodHandles && |
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190 klass() == SystemDictionary::MethodHandle_klass() && |
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191 methodOopDesc::is_method_handle_invoke_name(name())) { |
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192 if (!MethodHandles::enabled()) { |
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193 // Make sure the Java part of the runtime has been booted up. |
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194 klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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195 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
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196 SystemDictionary::resolve_or_fail(vmSymbolHandles::sun_dyn_MethodHandleNatives(), |
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197 Handle(), |
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198 Handle(), |
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199 true, |
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200 CHECK); |
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201 } |
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202 } |
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203 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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204 signature, |
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205 current_klass, |
710 | 206 CHECK); |
207 if (result_oop != NULL) { | |
208 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); | |
209 result = methodHandle(THREAD, result_oop); | |
210 } | |
211 } | |
212 } | |
213 | |
0 | 214 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
215 KlassHandle resolved_klass, | |
216 KlassHandle sel_klass, | |
217 methodHandle sel_method, | |
218 TRAPS) { | |
219 | |
220 AccessFlags flags = sel_method->access_flags(); | |
221 | |
222 // Special case: arrays always override "clone". JVMS 2.15. | |
223 // If the resolved klass is an array class, and the declaring class | |
224 // is java.lang.Object and the method is "clone", set the flags | |
225 // to public. | |
226 // | |
227 // We'll check for the method name first, as that's most likely | |
228 // to be false (so we'll short-circuit out of these tests). | |
229 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 230 sel_klass() == SystemDictionary::Object_klass() && |
0 | 231 resolved_klass->oop_is_array()) { |
232 // We need to change "protected" to "public". | |
233 assert(flags.is_protected(), "clone not protected?"); | |
234 jint new_flags = flags.as_int(); | |
235 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
236 new_flags = new_flags | JVM_ACC_PUBLIC; | |
237 flags.set_flags(new_flags); | |
238 } | |
239 | |
240 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
241 resolved_klass->as_klassOop(), | |
242 sel_klass->as_klassOop(), | |
243 flags, | |
244 true)) { | |
245 ResourceMark rm(THREAD); | |
246 Exceptions::fthrow( | |
247 THREAD_AND_LOCATION, | |
248 vmSymbolHandles::java_lang_IllegalAccessError(), | |
249 "tried to access method %s.%s%s from class %s", | |
250 sel_klass->external_name(), | |
251 sel_method->name()->as_C_string(), | |
252 sel_method->signature()->as_C_string(), | |
253 ref_klass->external_name() | |
254 ); | |
255 return; | |
256 } | |
257 } | |
258 | |
259 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
260 constantPoolHandle pool, int index, TRAPS) { | |
261 | |
262 // resolve klass | |
263 resolve_klass(resolved_klass, pool, index, CHECK); | |
264 | |
265 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
266 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
267 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
268 | |
269 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
270 } | |
271 | |
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272 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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273 // The class is java.dyn.MethodHandle |
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274 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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275 |
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276 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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277 |
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278 symbolHandle method_signature(THREAD, pool->signature_ref_at(index)); |
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279 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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280 |
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281 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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282 } |
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283 |
0 | 284 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
285 | |
286 // resolve klass | |
287 resolve_klass(resolved_klass, pool, index, CHECK); | |
288 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
289 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
290 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
291 | |
292 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
293 } | |
294 | |
295 | |
296 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
297 symbolHandle method_name, symbolHandle method_signature, | |
298 KlassHandle current_klass, bool check_access, TRAPS) { | |
299 | |
300 // 1. check if klass is not interface | |
301 if (resolved_klass->is_interface()) { | |
302 char buf[200]; | |
303 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
304 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
305 } | |
306 | |
307 // 2. lookup method in resolved klass and its super klasses | |
308 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
309 | |
310 if (resolved_method.is_null()) { // not found in the class hierarchy | |
311 // 3. lookup method in all the interfaces implemented by the resolved klass | |
312 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
313 | |
314 if (resolved_method.is_null()) { | |
710 | 315 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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6939196: method handle signatures off the boot class path get linkage errors
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316 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
710 | 317 } |
318 | |
319 if (resolved_method.is_null()) { | |
0 | 320 // 4. method lookup failed |
321 ResourceMark rm(THREAD); | |
322 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
323 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
324 method_name(), | |
325 method_signature())); | |
326 } | |
327 } | |
328 | |
329 // 5. check if method is concrete | |
330 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
331 ResourceMark rm(THREAD); | |
332 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
333 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
334 method_name(), | |
335 method_signature())); | |
336 } | |
337 | |
338 // 6. access checks, access checking may be turned off when calling from within the VM. | |
339 if (check_access) { | |
340 assert(current_klass.not_null() , "current_klass should not be null"); | |
341 | |
342 // check if method can be accessed by the referring class | |
343 check_method_accessability(current_klass, | |
344 resolved_klass, | |
345 KlassHandle(THREAD, resolved_method->method_holder()), | |
346 resolved_method, | |
347 CHECK); | |
348 | |
349 // check loader constraints | |
350 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
351 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
352 { | |
353 ResourceMark rm(THREAD); | |
354 char* failed_type_name = | |
355 SystemDictionary::check_signature_loaders(method_signature, loader, | |
356 class_loader, true, CHECK); | |
357 if (failed_type_name != NULL) { | |
358 const char* msg = "loader constraint violation: when resolving method" | |
359 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
360 " and the class loader (instance of %s) for resolved class, %s, have" | |
361 " different Class objects for the type %s used in the signature"; | |
362 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
363 const char* loader1 = SystemDictionary::loader_name(loader()); | |
364 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
365 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
366 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
367 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
368 strlen(current) + strlen(loader2) + strlen(resolved) + | |
369 strlen(failed_type_name); | |
370 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
371 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
372 resolved, failed_type_name); | |
373 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
374 } | |
375 } | |
376 } | |
377 } | |
378 | |
379 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
380 KlassHandle resolved_klass, | |
381 symbolHandle method_name, | |
382 symbolHandle method_signature, | |
383 KlassHandle current_klass, | |
384 bool check_access, TRAPS) { | |
385 | |
386 // check if klass is interface | |
387 if (!resolved_klass->is_interface()) { | |
388 char buf[200]; | |
389 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
390 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
391 } | |
392 | |
393 // lookup method in this interface or its super, java.lang.Object | |
394 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
395 | |
396 if (resolved_method.is_null()) { | |
397 // lookup method in all the super-interfaces | |
398 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
399 if (resolved_method.is_null()) { | |
400 // no method found | |
401 ResourceMark rm(THREAD); | |
402 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
403 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
404 method_name(), | |
405 method_signature())); | |
406 } | |
407 } | |
408 | |
409 if (check_access) { | |
410 HandleMark hm(THREAD); | |
411 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
412 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
413 { | |
414 ResourceMark rm(THREAD); | |
415 char* failed_type_name = | |
416 SystemDictionary::check_signature_loaders(method_signature, loader, | |
417 class_loader, true, CHECK); | |
418 if (failed_type_name != NULL) { | |
419 const char* msg = "loader constraint violation: when resolving " | |
420 "interface method \"%s\" the class loader (instance of %s) of the " | |
421 "current class, %s, and the class loader (instance of %s) for " | |
422 "resolved class, %s, have different Class objects for the type %s " | |
423 "used in the signature"; | |
424 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
425 const char* loader1 = SystemDictionary::loader_name(loader()); | |
426 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
427 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
428 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
429 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
430 strlen(current) + strlen(loader2) + strlen(resolved) + | |
431 strlen(failed_type_name); | |
432 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
433 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
434 resolved, failed_type_name); | |
435 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
436 } | |
437 } | |
438 } | |
439 } | |
440 | |
441 //------------------------------------------------------------------------------------------------------------------------ | |
442 // Field resolution | |
443 | |
444 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
445 KlassHandle resolved_klass, | |
446 KlassHandle sel_klass, | |
447 fieldDescriptor& fd, | |
448 TRAPS) { | |
449 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
450 resolved_klass->as_klassOop(), | |
451 sel_klass->as_klassOop(), | |
452 fd.access_flags(), | |
453 true)) { | |
454 ResourceMark rm(THREAD); | |
455 Exceptions::fthrow( | |
456 THREAD_AND_LOCATION, | |
457 vmSymbolHandles::java_lang_IllegalAccessError(), | |
458 "tried to access field %s.%s from class %s", | |
459 sel_klass->external_name(), | |
460 fd.name()->as_C_string(), | |
461 ref_klass->external_name() | |
462 ); | |
463 return; | |
464 } | |
465 } | |
466 | |
467 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
468 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
469 } | |
470 | |
471 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
472 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
473 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
474 | |
475 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
476 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
477 | |
478 // resolve specified klass | |
479 KlassHandle resolved_klass; | |
480 if (update_pool) { | |
481 resolve_klass(resolved_klass, pool, index, CHECK); | |
482 } else { | |
483 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
484 } | |
485 // Load these early in case the resolve of the containing klass fails | |
486 symbolOop field = pool->name_ref_at(index); | |
487 symbolHandle field_h (THREAD, field); // preserve in case we need the name | |
488 symbolOop sig = pool->signature_ref_at(index); | |
489 // Check if there's a resolved klass containing the field | |
490 if( resolved_klass.is_null() ) { | |
491 ResourceMark rm(THREAD); | |
492 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
493 } | |
494 | |
495 // Resolve instance field | |
496 fieldDescriptor fd; // find_field initializes fd if found | |
497 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
498 // check if field exists; i.e., if a klass containing the field def has been selected | |
499 if (sel_klass.is_null()){ | |
500 ResourceMark rm(THREAD); | |
501 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
502 } | |
503 | |
504 // check access | |
505 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
506 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
507 | |
508 // check for errors | |
509 if (is_static != fd.is_static()) { | |
510 char msg[200]; | |
511 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()); | |
512 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
513 } | |
514 | |
515 // Final fields can only be accessed from its own class. | |
516 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
517 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
518 } | |
519 | |
520 // initialize resolved_klass if necessary | |
521 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
522 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
523 // | |
524 // note 2: we don't want to force initialization if we are just checking | |
525 // if the field access is legal; e.g., during compilation | |
526 if (is_static && !check_only) { | |
527 sel_klass->initialize(CHECK); | |
528 } | |
529 | |
530 { | |
531 HandleMark hm(THREAD); | |
532 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
533 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
534 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); | |
535 { | |
536 ResourceMark rm(THREAD); | |
537 char* failed_type_name = | |
538 SystemDictionary::check_signature_loaders(signature_ref, | |
539 ref_loader, sel_loader, | |
540 false, | |
541 CHECK); | |
542 if (failed_type_name != NULL) { | |
543 const char* msg = "loader constraint violation: when resolving field" | |
544 " \"%s\" the class loader (instance of %s) of the referring class, " | |
545 "%s, and the class loader (instance of %s) for the field's resolved " | |
546 "type, %s, have different Class objects for that type"; | |
547 char* field_name = field_h()->as_C_string(); | |
548 const char* loader1 = SystemDictionary::loader_name(ref_loader()); | |
549 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
550 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
551 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
552 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
553 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
554 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
555 failed_type_name); | |
556 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
557 } | |
558 } | |
559 } | |
560 | |
561 // return information. note that the klass is set to the actual klass containing the | |
562 // field, otherwise access of static fields in superclasses will not work. | |
563 KlassHandle holder (THREAD, fd.field_holder()); | |
564 symbolHandle name (THREAD, fd.name()); | |
565 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); | |
566 } | |
567 | |
568 | |
569 //------------------------------------------------------------------------------------------------------------------------ | |
570 // Invoke resolution | |
571 // | |
572 // Naming conventions: | |
573 // | |
574 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
575 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
576 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
577 // recv_klass the receiver klass | |
578 | |
579 | |
580 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, | |
581 symbolHandle method_signature, KlassHandle current_klass, | |
582 bool check_access, bool initialize_class, TRAPS) { | |
583 methodHandle resolved_method; | |
584 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
585 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
586 | |
587 // Initialize klass (this should only happen if everything is ok) | |
588 if (initialize_class && resolved_klass->should_be_initialized()) { | |
589 resolved_klass->initialize(CHECK); | |
590 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
591 } | |
592 | |
593 // setup result | |
594 result.set_static(resolved_klass, resolved_method, CHECK); | |
595 } | |
596 | |
597 // throws linktime exceptions | |
598 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
599 symbolHandle method_name, symbolHandle method_signature, | |
600 KlassHandle current_klass, bool check_access, TRAPS) { | |
601 | |
602 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
603 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
604 | |
605 // check if static | |
606 if (!resolved_method->is_static()) { | |
607 char buf[200]; | |
608 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
609 resolved_method->name(), | |
610 resolved_method->signature())); | |
611 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
612 } | |
613 } | |
614 | |
615 | |
616 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, | |
617 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
618 methodHandle resolved_method; | |
619 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
620 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
621 } | |
622 | |
623 // throws linktime exceptions | |
624 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
625 symbolHandle method_name, symbolHandle method_signature, | |
626 KlassHandle current_klass, bool check_access, TRAPS) { | |
627 | |
628 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
629 | |
630 // check if method name is <init>, that it is found in same klass as static type | |
631 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
632 resolved_method->method_holder() != resolved_klass()) { | |
633 ResourceMark rm(THREAD); | |
634 Exceptions::fthrow( | |
635 THREAD_AND_LOCATION, | |
636 vmSymbolHandles::java_lang_NoSuchMethodError(), | |
637 "%s: method %s%s not found", | |
638 resolved_klass->external_name(), | |
639 resolved_method->name()->as_C_string(), | |
640 resolved_method->signature()->as_C_string() | |
641 ); | |
642 return; | |
643 } | |
644 | |
645 // check if not static | |
646 if (resolved_method->is_static()) { | |
647 char buf[200]; | |
648 jio_snprintf(buf, sizeof(buf), | |
649 "Expecting non-static method %s", | |
650 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
651 resolved_method->name(), | |
652 resolved_method->signature())); | |
653 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
654 } | |
655 } | |
656 | |
657 // throws runtime exceptions | |
658 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
659 KlassHandle current_klass, bool check_access, TRAPS) { | |
660 | |
661 // resolved method is selected method unless we have an old-style lookup | |
662 methodHandle sel_method(THREAD, resolved_method()); | |
663 | |
664 // check if this is an old-style super call and do a new lookup if so | |
665 { KlassHandle method_klass = KlassHandle(THREAD, | |
666 resolved_method->method_holder()); | |
667 | |
668 if (check_access && | |
669 // a) check if ACC_SUPER flag is set for the current class | |
670 current_klass->is_super() && | |
671 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
672 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
673 // c) check if the method is not <init> | |
674 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
675 // Lookup super method | |
676 KlassHandle super_klass(THREAD, current_klass->super()); | |
677 lookup_instance_method_in_klasses(sel_method, super_klass, | |
678 symbolHandle(THREAD, resolved_method->name()), | |
679 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
680 // check if found | |
681 if (sel_method.is_null()) { | |
682 ResourceMark rm(THREAD); | |
683 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
684 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
685 resolved_method->name(), | |
686 resolved_method->signature())); | |
687 } | |
688 } | |
689 } | |
690 | |
691 // check if not static | |
692 if (sel_method->is_static()) { | |
693 char buf[200]; | |
694 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
695 resolved_method->name(), | |
696 resolved_method->signature())); | |
697 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
698 } | |
699 | |
700 // check if abstract | |
701 if (sel_method->is_abstract()) { | |
702 ResourceMark rm(THREAD); | |
703 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
704 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
705 sel_method->name(), | |
706 sel_method->signature())); | |
707 } | |
708 | |
709 // setup result | |
710 result.set_static(resolved_klass, sel_method, CHECK); | |
711 } | |
712 | |
713 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
714 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
715 bool check_access, bool check_null_and_abstract, TRAPS) { | |
716 methodHandle resolved_method; | |
717 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
718 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
719 } | |
720 | |
721 // throws linktime exceptions | |
722 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
723 symbolHandle method_name, symbolHandle method_signature, | |
724 KlassHandle current_klass, bool check_access, TRAPS) { | |
725 // normal method resolution | |
726 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
727 | |
728 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
729 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
730 | |
731 // check if not static | |
732 if (resolved_method->is_static()) { | |
733 char buf[200]; | |
734 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
735 resolved_method->name(), | |
736 resolved_method->signature())); | |
737 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
738 } | |
739 } | |
740 | |
741 // throws runtime exceptions | |
742 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
743 methodHandle resolved_method, | |
744 KlassHandle resolved_klass, | |
745 Handle recv, | |
746 KlassHandle recv_klass, | |
747 bool check_null_and_abstract, | |
748 TRAPS) { | |
749 | |
750 // setup default return values | |
751 int vtable_index = methodOopDesc::invalid_vtable_index; | |
752 methodHandle selected_method; | |
753 | |
754 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
755 | |
756 // runtime method resolution | |
757 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
758 THROW(vmSymbols::java_lang_NullPointerException()); | |
759 } | |
760 | |
761 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
762 // has not been rewritten, and the vtable initialized. | |
763 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
764 | |
765 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
766 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
767 // a missing receiver might result in a bogus lookup. | |
768 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
769 | |
770 // do lookup based on receiver klass using the vtable index | |
771 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
772 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
773 symbolHandle(THREAD, resolved_method->name()), | |
774 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
775 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); | |
776 | |
777 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
778 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
779 } else { | |
780 // at this point we are sure that resolved_method is virtual and not | |
781 // a miranda method; therefore, it must have a valid vtable index. | |
782 vtable_index = resolved_method->vtable_index(); | |
783 // We could get a negative vtable_index for final methods, | |
784 // because as an optimization they are they are never put in the vtable, | |
785 // unless they override an existing method. | |
786 // If we do get a negative, it means the resolved method is the the selected | |
787 // method, and it can never be changed by an override. | |
788 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
789 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
790 selected_method = resolved_method; | |
791 } else { | |
792 // recv_klass might be an arrayKlassOop but all vtables start at | |
793 // the same place. The cast is to avoid virtual call and assertion. | |
794 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
795 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
796 } | |
797 } | |
798 | |
799 // check if method exists | |
800 if (selected_method.is_null()) { | |
801 ResourceMark rm(THREAD); | |
802 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
803 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
804 resolved_method->name(), | |
805 resolved_method->signature())); | |
806 } | |
807 | |
808 // check if abstract | |
809 if (check_null_and_abstract && selected_method->is_abstract()) { | |
810 ResourceMark rm(THREAD); | |
811 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
812 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
813 selected_method->name(), | |
814 selected_method->signature())); | |
815 } | |
816 | |
817 // setup result | |
818 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
819 } | |
820 | |
821 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
822 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
823 bool check_access, bool check_null_and_abstract, TRAPS) { | |
824 methodHandle resolved_method; | |
825 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
826 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
827 } | |
828 | |
829 // throws linktime exceptions | |
830 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, | |
831 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
832 // normal interface method resolution | |
833 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
834 | |
835 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
836 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
837 } | |
838 | |
839 // throws runtime exceptions | |
840 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
841 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
842 // check if receiver exists | |
843 if (check_null_and_abstract && recv.is_null()) { | |
844 THROW(vmSymbols::java_lang_NullPointerException()); | |
845 } | |
846 | |
847 // check if receiver klass implements the resolved interface | |
848 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
849 char buf[200]; | |
850 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
851 (Klass::cast(recv_klass()))->external_name(), | |
852 (Klass::cast(resolved_klass()))->external_name()); | |
853 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
854 } | |
855 // do lookup based on receiver klass | |
856 methodHandle sel_method; | |
857 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
858 symbolHandle(THREAD, resolved_method->name()), | |
859 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
860 // check if method exists | |
861 if (sel_method.is_null()) { | |
862 ResourceMark rm(THREAD); | |
863 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
864 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
865 resolved_method->name(), | |
866 resolved_method->signature())); | |
867 } | |
868 // check if public | |
869 if (!sel_method->is_public()) { | |
870 ResourceMark rm(THREAD); | |
871 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
872 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
873 sel_method->name(), | |
874 sel_method->signature())); | |
875 } | |
876 // check if abstract | |
877 if (check_null_and_abstract && sel_method->is_abstract()) { | |
878 ResourceMark rm(THREAD); | |
879 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
880 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
881 sel_method->name(), | |
882 sel_method->signature())); | |
883 } | |
884 // setup result | |
885 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
886 } | |
887 | |
888 | |
889 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
890 KlassHandle resolved_klass, | |
891 symbolHandle method_name, | |
892 symbolHandle method_signature, | |
893 KlassHandle current_klass, | |
894 bool check_access) { | |
895 EXCEPTION_MARK; | |
896 methodHandle method_result; | |
897 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
898 if (HAS_PENDING_EXCEPTION) { | |
899 CLEAR_PENDING_EXCEPTION; | |
900 return methodHandle(); | |
901 } else { | |
902 return method_result; | |
903 } | |
904 } | |
905 | |
906 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
907 KlassHandle resolved_klass, | |
908 symbolHandle method_name, | |
909 symbolHandle method_signature, | |
910 KlassHandle current_klass, | |
911 bool check_access) { | |
912 EXCEPTION_MARK; | |
913 methodHandle method_result; | |
914 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
915 if (HAS_PENDING_EXCEPTION) { | |
916 CLEAR_PENDING_EXCEPTION; | |
917 return methodHandle(); | |
918 } else { | |
919 return method_result; | |
920 } | |
921 } | |
922 | |
923 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
924 KlassHandle receiver_klass, | |
925 KlassHandle resolved_klass, | |
926 symbolHandle name, | |
927 symbolHandle signature, | |
928 KlassHandle current_klass) { | |
929 EXCEPTION_MARK; | |
930 CallInfo info; | |
931 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
932 if (HAS_PENDING_EXCEPTION) { | |
933 CLEAR_PENDING_EXCEPTION; | |
934 return methodHandle(); | |
935 } | |
936 return info.selected_method(); | |
937 } | |
938 | |
939 methodHandle LinkResolver::resolve_interface_call_or_null( | |
940 KlassHandle receiver_klass, | |
941 KlassHandle resolved_klass, | |
942 symbolHandle name, | |
943 symbolHandle signature, | |
944 KlassHandle current_klass) { | |
945 EXCEPTION_MARK; | |
946 CallInfo info; | |
947 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
948 if (HAS_PENDING_EXCEPTION) { | |
949 CLEAR_PENDING_EXCEPTION; | |
950 return methodHandle(); | |
951 } | |
952 return info.selected_method(); | |
953 } | |
954 | |
955 int LinkResolver::resolve_virtual_vtable_index( | |
956 KlassHandle receiver_klass, | |
957 KlassHandle resolved_klass, | |
958 symbolHandle name, | |
959 symbolHandle signature, | |
960 KlassHandle current_klass) { | |
961 EXCEPTION_MARK; | |
962 CallInfo info; | |
963 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
964 if (HAS_PENDING_EXCEPTION) { | |
965 CLEAR_PENDING_EXCEPTION; | |
966 return methodOopDesc::invalid_vtable_index; | |
967 } | |
968 return info.vtable_index(); | |
969 } | |
970 | |
971 methodHandle LinkResolver::resolve_static_call_or_null( | |
972 KlassHandle resolved_klass, | |
973 symbolHandle name, | |
974 symbolHandle signature, | |
975 KlassHandle current_klass) { | |
976 EXCEPTION_MARK; | |
977 CallInfo info; | |
978 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
979 if (HAS_PENDING_EXCEPTION) { | |
980 CLEAR_PENDING_EXCEPTION; | |
981 return methodHandle(); | |
982 } | |
983 return info.selected_method(); | |
984 } | |
985 | |
986 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, | |
987 KlassHandle current_klass) { | |
988 EXCEPTION_MARK; | |
989 CallInfo info; | |
990 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
991 if (HAS_PENDING_EXCEPTION) { | |
992 CLEAR_PENDING_EXCEPTION; | |
993 return methodHandle(); | |
994 } | |
995 return info.selected_method(); | |
996 } | |
997 | |
998 | |
999 | |
1000 //------------------------------------------------------------------------------------------------------------------------ | |
1001 // ConstantPool entries | |
1002 | |
1003 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1004 switch (byte) { | |
1005 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1006 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1007 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1008 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1009 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1010 } | |
1011 return; | |
1012 } | |
1013 | |
1014 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, | |
1015 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { | |
1016 // resolve klass | |
1017 resolve_klass(resolved_klass, pool, index, CHECK); | |
1018 | |
1019 // Get name, signature, and static klass | |
1020 method_name = symbolHandle(THREAD, pool->name_ref_at(index)); | |
1021 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); | |
1022 current_klass = KlassHandle(THREAD, pool->pool_holder()); | |
1023 } | |
1024 | |
1025 | |
1026 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1027 KlassHandle resolved_klass; | |
1028 symbolHandle method_name; | |
1029 symbolHandle method_signature; | |
1030 KlassHandle current_klass; | |
1031 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1032 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1033 } | |
1034 | |
1035 | |
1036 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1037 KlassHandle resolved_klass; | |
1038 symbolHandle method_name; | |
1039 symbolHandle method_signature; | |
1040 KlassHandle current_klass; | |
1041 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1042 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1043 } | |
1044 | |
1045 | |
1046 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1047 constantPoolHandle pool, int index, | |
1048 TRAPS) { | |
1049 | |
1050 KlassHandle resolved_klass; | |
1051 symbolHandle method_name; | |
1052 symbolHandle method_signature; | |
1053 KlassHandle current_klass; | |
1054 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1055 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1056 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1057 } | |
1058 | |
1059 | |
1060 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1061 KlassHandle resolved_klass; | |
1062 symbolHandle method_name; | |
1063 symbolHandle method_signature; | |
1064 KlassHandle current_klass; | |
1065 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1066 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1067 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1068 } | |
1069 | |
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1070 |
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1071 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1072 assert(EnableInvokeDynamic, ""); |
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1073 |
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1074 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1075 |
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1076 // At this point, we only need the signature, and can ignore the name. |
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1077 symbolHandle method_signature(THREAD, pool->signature_ref_at(raw_index)); // raw_index works directly |
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1078 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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1079 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1080 |
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1081 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1082 // The extra MH receiver will be inserted into the stack on every call. |
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1083 methodHandle resolved_method; |
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1084 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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1085 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1086 if (resolved_method.is_null()) { |
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1087 THROW(vmSymbols::java_lang_InternalError()); |
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1088 } |
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1089 result.set_dynamic(resolved_method, CHECK); |
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1090 } |
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1091 |
0 | 1092 //------------------------------------------------------------------------------------------------------------------------ |
1093 #ifndef PRODUCT | |
1094 | |
1095 void FieldAccessInfo::print() { | |
1096 ResourceMark rm; | |
1097 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1098 } | |
1099 | |
1100 #endif |