Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 1988:684faacebf20
7003782: Update JVMTI version to 1.2 for jdk7
Summary: Update minor version to 1.2 for jdk7
Reviewed-by: phh, dcubed
author | kamg |
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date | Mon, 06 Dec 2010 20:21:15 -0500 |
parents | f95d63e2154a |
children | 3582bf76420e |
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 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "compiler/compileBroker.hpp" | |
29 #include "gc_interface/collectedHeap.inline.hpp" | |
30 #include "interpreter/bytecode.hpp" | |
31 #include "interpreter/interpreterRuntime.hpp" | |
32 #include "interpreter/linkResolver.hpp" | |
33 #include "memory/resourceArea.hpp" | |
34 #include "memory/universe.inline.hpp" | |
35 #include "oops/instanceKlass.hpp" | |
36 #include "oops/objArrayOop.hpp" | |
37 #include "prims/methodHandles.hpp" | |
38 #include "prims/nativeLookup.hpp" | |
39 #include "runtime/compilationPolicy.hpp" | |
40 #include "runtime/fieldDescriptor.hpp" | |
41 #include "runtime/frame.inline.hpp" | |
42 #include "runtime/handles.inline.hpp" | |
43 #include "runtime/reflection.hpp" | |
44 #include "runtime/signature.hpp" | |
45 #include "runtime/vmThread.hpp" | |
46 #ifdef TARGET_OS_FAMILY_linux | |
47 # include "thread_linux.inline.hpp" | |
48 #endif | |
49 #ifdef TARGET_OS_FAMILY_solaris | |
50 # include "thread_solaris.inline.hpp" | |
51 #endif | |
52 #ifdef TARGET_OS_FAMILY_windows | |
53 # include "thread_windows.inline.hpp" | |
54 #endif | |
0 | 55 |
56 //------------------------------------------------------------------------------------------------------------------------ | |
57 // Implementation of FieldAccessInfo | |
58 | |
59 void FieldAccessInfo::set(KlassHandle klass, symbolHandle name, int field_index, int field_offset, | |
60 BasicType field_type, AccessFlags access_flags) { | |
61 _klass = klass; | |
62 _name = name; | |
63 _field_index = field_index; | |
64 _field_offset = field_offset; | |
65 _field_type = field_type; | |
66 _access_flags = access_flags; | |
67 } | |
68 | |
69 | |
70 //------------------------------------------------------------------------------------------------------------------------ | |
71 // Implementation of CallInfo | |
72 | |
73 | |
74 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
75 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
76 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
77 } | |
78 | |
79 | |
80 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
81 // This is only called for interface methods. If the resolved_method | |
82 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
83 // we should pick the vtable index from the resolved method. | |
84 // Other than that case, there is no valid vtable index to specify. | |
85 int vtable_index = methodOopDesc::invalid_vtable_index; | |
1142 | 86 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
0 | 87 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
88 vtable_index = resolved_method->vtable_index(); | |
89 } | |
90 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
91 } | |
92 | |
93 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
94 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
95 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
96 } | |
97 | |
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98 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) { |
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99 assert(resolved_method->is_method_handle_invoke(), ""); |
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100 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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101 assert(resolved_klass == resolved_method->method_holder(), ""); |
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102 int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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103 assert(resolved_method->vtable_index() == vtable_index, ""); |
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104 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK); |
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105 } |
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106 |
0 | 107 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
108 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
109 _resolved_klass = resolved_klass; | |
110 _selected_klass = selected_klass; | |
111 _resolved_method = resolved_method; | |
112 _selected_method = selected_method; | |
113 _vtable_index = vtable_index; | |
1783 | 114 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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115 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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116 |
1783 | 117 // Note: with several active threads, the must_be_compiled may be true |
118 // while can_be_compiled is false; remove assert | |
119 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 120 if (THREAD->is_Compiler_thread()) { |
121 // don't force compilation, resolve was on behalf of compiler | |
122 return; | |
123 } | |
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124 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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125 // 'is_not_initialized' means not only '!is_initialized', but also that |
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126 // initialization has not been started yet ('!being_initialized') |
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127 // Do not force compilation of methods in uninitialized classes. |
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128 // Note that doing this would throw an assert later, |
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129 // in CompileBroker::compile_method. |
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130 // We sometimes use the link resolver to do reflective lookups |
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131 // even before classes are initialized. |
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132 return; |
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133 } |
0 | 134 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
1783 | 135 CompLevel_initial_compile, |
136 methodHandle(), 0, "must_be_compiled", CHECK); | |
0 | 137 } |
138 } | |
139 | |
140 | |
141 //------------------------------------------------------------------------------------------------------------------------ | |
142 // Klass resolution | |
143 | |
144 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
145 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
146 sel_klass->as_klassOop(), | |
147 true)) { | |
148 ResourceMark rm(THREAD); | |
149 Exceptions::fthrow( | |
150 THREAD_AND_LOCATION, | |
151 vmSymbolHandles::java_lang_IllegalAccessError(), | |
152 "tried to access class %s from class %s", | |
153 sel_klass->external_name(), | |
154 ref_klass->external_name() | |
155 ); | |
156 return; | |
157 } | |
158 } | |
159 | |
160 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
161 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
162 result = KlassHandle(THREAD, result_oop); | |
163 } | |
164 | |
165 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
166 klassOop result_oop = | |
167 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
168 result = KlassHandle(THREAD, result_oop); | |
169 } | |
170 | |
171 | |
172 //------------------------------------------------------------------------------------------------------------------------ | |
173 // Method resolution | |
174 // | |
175 // According to JVM spec. $5.4.3c & $5.4.3d | |
176 | |
177 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
178 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
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179 if (EnableMethodHandles && result_oop != NULL) { |
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180 switch (result_oop->intrinsic_id()) { |
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181 case vmIntrinsics::_invokeExact: |
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182 case vmIntrinsics::_invokeGeneric: |
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183 case vmIntrinsics::_invokeDynamic: |
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184 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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185 return; |
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186 } |
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187 } |
0 | 188 result = methodHandle(THREAD, result_oop); |
189 } | |
190 | |
191 // returns first instance method | |
192 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
193 methodOop result_oop = klass->uncached_lookup_method(name(), signature()); | |
194 result = methodHandle(THREAD, result_oop); | |
195 while (!result.is_null() && result->is_static()) { | |
196 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
197 result = methodHandle(THREAD, klass->uncached_lookup_method(name(), signature())); | |
198 } | |
199 } | |
200 | |
201 | |
202 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
203 ResourceMark rm(THREAD); | |
204 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
205 return vt->index_of_miranda(name(), signature()); | |
206 } | |
207 | |
208 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS) { | |
209 instanceKlass *ik = instanceKlass::cast(klass()); | |
210 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name(), signature())); | |
211 } | |
212 | |
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213 void LinkResolver::lookup_implicit_method(methodHandle& result, |
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214 KlassHandle klass, symbolHandle name, symbolHandle signature, |
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215 KlassHandle current_klass, |
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216 TRAPS) { |
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217 if (EnableMethodHandles && |
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218 klass() == SystemDictionary::MethodHandle_klass() && |
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219 methodOopDesc::is_method_handle_invoke_name(name())) { |
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220 if (!MethodHandles::enabled()) { |
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221 // Make sure the Java part of the runtime has been booted up. |
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222 klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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223 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
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224 SystemDictionary::resolve_or_fail(vmSymbolHandles::sun_dyn_MethodHandleNatives(), |
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225 Handle(), |
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226 Handle(), |
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227 true, |
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228 CHECK); |
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229 } |
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230 } |
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231 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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232 signature, |
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233 current_klass, |
710 | 234 CHECK); |
235 if (result_oop != NULL) { | |
236 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature(), "consistent"); | |
237 result = methodHandle(THREAD, result_oop); | |
238 } | |
239 } | |
240 } | |
241 | |
0 | 242 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
243 KlassHandle resolved_klass, | |
244 KlassHandle sel_klass, | |
245 methodHandle sel_method, | |
246 TRAPS) { | |
247 | |
248 AccessFlags flags = sel_method->access_flags(); | |
249 | |
250 // Special case: arrays always override "clone". JVMS 2.15. | |
251 // If the resolved klass is an array class, and the declaring class | |
252 // is java.lang.Object and the method is "clone", set the flags | |
253 // to public. | |
254 // | |
255 // We'll check for the method name first, as that's most likely | |
256 // to be false (so we'll short-circuit out of these tests). | |
257 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 258 sel_klass() == SystemDictionary::Object_klass() && |
0 | 259 resolved_klass->oop_is_array()) { |
260 // We need to change "protected" to "public". | |
261 assert(flags.is_protected(), "clone not protected?"); | |
262 jint new_flags = flags.as_int(); | |
263 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
264 new_flags = new_flags | JVM_ACC_PUBLIC; | |
265 flags.set_flags(new_flags); | |
266 } | |
267 | |
268 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
269 resolved_klass->as_klassOop(), | |
270 sel_klass->as_klassOop(), | |
271 flags, | |
272 true)) { | |
273 ResourceMark rm(THREAD); | |
274 Exceptions::fthrow( | |
275 THREAD_AND_LOCATION, | |
276 vmSymbolHandles::java_lang_IllegalAccessError(), | |
277 "tried to access method %s.%s%s from class %s", | |
278 sel_klass->external_name(), | |
279 sel_method->name()->as_C_string(), | |
280 sel_method->signature()->as_C_string(), | |
281 ref_klass->external_name() | |
282 ); | |
283 return; | |
284 } | |
285 } | |
286 | |
287 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
288 constantPoolHandle pool, int index, TRAPS) { | |
289 | |
290 // resolve klass | |
291 resolve_klass(resolved_klass, pool, index, CHECK); | |
292 | |
293 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
294 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
295 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
296 | |
297 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
298 } | |
299 | |
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300 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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301 // The class is java.dyn.MethodHandle |
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302 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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303 |
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304 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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305 |
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306 symbolHandle method_signature(THREAD, pool->signature_ref_at(index)); |
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307 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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308 |
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309 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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310 } |
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311 |
0 | 312 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
313 | |
314 // resolve klass | |
315 resolve_klass(resolved_klass, pool, index, CHECK); | |
316 symbolHandle method_name (THREAD, pool->name_ref_at(index)); | |
317 symbolHandle method_signature (THREAD, pool->signature_ref_at(index)); | |
318 KlassHandle current_klass(THREAD, pool->pool_holder()); | |
319 | |
320 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
321 } | |
322 | |
323 | |
324 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
325 symbolHandle method_name, symbolHandle method_signature, | |
326 KlassHandle current_klass, bool check_access, TRAPS) { | |
327 | |
328 // 1. check if klass is not interface | |
329 if (resolved_klass->is_interface()) { | |
330 char buf[200]; | |
331 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
332 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
333 } | |
334 | |
335 // 2. lookup method in resolved klass and its super klasses | |
336 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
337 | |
338 if (resolved_method.is_null()) { // not found in the class hierarchy | |
339 // 3. lookup method in all the interfaces implemented by the resolved klass | |
340 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
341 | |
342 if (resolved_method.is_null()) { | |
710 | 343 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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344 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
710 | 345 } |
346 | |
347 if (resolved_method.is_null()) { | |
0 | 348 // 4. method lookup failed |
349 ResourceMark rm(THREAD); | |
350 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
351 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
352 method_name(), | |
353 method_signature())); | |
354 } | |
355 } | |
356 | |
357 // 5. check if method is concrete | |
358 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
359 ResourceMark rm(THREAD); | |
360 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
361 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
362 method_name(), | |
363 method_signature())); | |
364 } | |
365 | |
366 // 6. access checks, access checking may be turned off when calling from within the VM. | |
367 if (check_access) { | |
368 assert(current_klass.not_null() , "current_klass should not be null"); | |
369 | |
370 // check if method can be accessed by the referring class | |
371 check_method_accessability(current_klass, | |
372 resolved_klass, | |
373 KlassHandle(THREAD, resolved_method->method_holder()), | |
374 resolved_method, | |
375 CHECK); | |
376 | |
377 // check loader constraints | |
378 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
379 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
380 { | |
381 ResourceMark rm(THREAD); | |
382 char* failed_type_name = | |
383 SystemDictionary::check_signature_loaders(method_signature, loader, | |
384 class_loader, true, CHECK); | |
385 if (failed_type_name != NULL) { | |
386 const char* msg = "loader constraint violation: when resolving method" | |
387 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
388 " and the class loader (instance of %s) for resolved class, %s, have" | |
389 " different Class objects for the type %s used in the signature"; | |
390 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
391 const char* loader1 = SystemDictionary::loader_name(loader()); | |
392 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
393 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
394 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
395 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
396 strlen(current) + strlen(loader2) + strlen(resolved) + | |
397 strlen(failed_type_name); | |
398 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
399 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
400 resolved, failed_type_name); | |
401 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
402 } | |
403 } | |
404 } | |
405 } | |
406 | |
407 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
408 KlassHandle resolved_klass, | |
409 symbolHandle method_name, | |
410 symbolHandle method_signature, | |
411 KlassHandle current_klass, | |
412 bool check_access, TRAPS) { | |
413 | |
414 // check if klass is interface | |
415 if (!resolved_klass->is_interface()) { | |
416 char buf[200]; | |
417 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
418 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
419 } | |
420 | |
421 // lookup method in this interface or its super, java.lang.Object | |
422 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
423 | |
424 if (resolved_method.is_null()) { | |
425 // lookup method in all the super-interfaces | |
426 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
427 if (resolved_method.is_null()) { | |
428 // no method found | |
429 ResourceMark rm(THREAD); | |
430 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
431 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
432 method_name(), | |
433 method_signature())); | |
434 } | |
435 } | |
436 | |
437 if (check_access) { | |
438 HandleMark hm(THREAD); | |
439 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
440 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
441 { | |
442 ResourceMark rm(THREAD); | |
443 char* failed_type_name = | |
444 SystemDictionary::check_signature_loaders(method_signature, loader, | |
445 class_loader, true, CHECK); | |
446 if (failed_type_name != NULL) { | |
447 const char* msg = "loader constraint violation: when resolving " | |
448 "interface method \"%s\" the class loader (instance of %s) of the " | |
449 "current class, %s, and the class loader (instance of %s) for " | |
450 "resolved class, %s, have different Class objects for the type %s " | |
451 "used in the signature"; | |
452 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name(),method_signature()); | |
453 const char* loader1 = SystemDictionary::loader_name(loader()); | |
454 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
455 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
456 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
457 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
458 strlen(current) + strlen(loader2) + strlen(resolved) + | |
459 strlen(failed_type_name); | |
460 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
461 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
462 resolved, failed_type_name); | |
463 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
464 } | |
465 } | |
466 } | |
467 } | |
468 | |
469 //------------------------------------------------------------------------------------------------------------------------ | |
470 // Field resolution | |
471 | |
472 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
473 KlassHandle resolved_klass, | |
474 KlassHandle sel_klass, | |
475 fieldDescriptor& fd, | |
476 TRAPS) { | |
477 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
478 resolved_klass->as_klassOop(), | |
479 sel_klass->as_klassOop(), | |
480 fd.access_flags(), | |
481 true)) { | |
482 ResourceMark rm(THREAD); | |
483 Exceptions::fthrow( | |
484 THREAD_AND_LOCATION, | |
485 vmSymbolHandles::java_lang_IllegalAccessError(), | |
486 "tried to access field %s.%s from class %s", | |
487 sel_klass->external_name(), | |
488 fd.name()->as_C_string(), | |
489 ref_klass->external_name() | |
490 ); | |
491 return; | |
492 } | |
493 } | |
494 | |
495 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
496 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
497 } | |
498 | |
499 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
500 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
501 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
502 | |
503 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
504 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
505 | |
506 // resolve specified klass | |
507 KlassHandle resolved_klass; | |
508 if (update_pool) { | |
509 resolve_klass(resolved_klass, pool, index, CHECK); | |
510 } else { | |
511 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
512 } | |
513 // Load these early in case the resolve of the containing klass fails | |
514 symbolOop field = pool->name_ref_at(index); | |
515 symbolHandle field_h (THREAD, field); // preserve in case we need the name | |
516 symbolOop sig = pool->signature_ref_at(index); | |
517 // Check if there's a resolved klass containing the field | |
518 if( resolved_klass.is_null() ) { | |
519 ResourceMark rm(THREAD); | |
520 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
521 } | |
522 | |
523 // Resolve instance field | |
524 fieldDescriptor fd; // find_field initializes fd if found | |
525 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
526 // check if field exists; i.e., if a klass containing the field def has been selected | |
527 if (sel_klass.is_null()){ | |
528 ResourceMark rm(THREAD); | |
529 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
530 } | |
531 | |
532 // check access | |
533 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
534 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
535 | |
536 // check for errors | |
537 if (is_static != fd.is_static()) { | |
538 char msg[200]; | |
539 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()); | |
540 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
541 } | |
542 | |
543 // Final fields can only be accessed from its own class. | |
544 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
545 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
546 } | |
547 | |
548 // initialize resolved_klass if necessary | |
549 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
550 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
551 // | |
552 // note 2: we don't want to force initialization if we are just checking | |
553 // if the field access is legal; e.g., during compilation | |
554 if (is_static && !check_only) { | |
555 sel_klass->initialize(CHECK); | |
556 } | |
557 | |
558 { | |
559 HandleMark hm(THREAD); | |
560 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
561 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
562 symbolHandle signature_ref (THREAD, pool->signature_ref_at(index)); | |
563 { | |
564 ResourceMark rm(THREAD); | |
565 char* failed_type_name = | |
566 SystemDictionary::check_signature_loaders(signature_ref, | |
567 ref_loader, sel_loader, | |
568 false, | |
569 CHECK); | |
570 if (failed_type_name != NULL) { | |
571 const char* msg = "loader constraint violation: when resolving field" | |
572 " \"%s\" the class loader (instance of %s) of the referring class, " | |
573 "%s, and the class loader (instance of %s) for the field's resolved " | |
574 "type, %s, have different Class objects for that type"; | |
575 char* field_name = field_h()->as_C_string(); | |
576 const char* loader1 = SystemDictionary::loader_name(ref_loader()); | |
577 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
578 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
579 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
580 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
581 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
582 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
583 failed_type_name); | |
584 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
585 } | |
586 } | |
587 } | |
588 | |
589 // return information. note that the klass is set to the actual klass containing the | |
590 // field, otherwise access of static fields in superclasses will not work. | |
591 KlassHandle holder (THREAD, fd.field_holder()); | |
592 symbolHandle name (THREAD, fd.name()); | |
593 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); | |
594 } | |
595 | |
596 | |
597 //------------------------------------------------------------------------------------------------------------------------ | |
598 // Invoke resolution | |
599 // | |
600 // Naming conventions: | |
601 // | |
602 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
603 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
604 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
605 // recv_klass the receiver klass | |
606 | |
607 | |
608 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, symbolHandle method_name, | |
609 symbolHandle method_signature, KlassHandle current_klass, | |
610 bool check_access, bool initialize_class, TRAPS) { | |
611 methodHandle resolved_method; | |
612 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
613 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
614 | |
615 // Initialize klass (this should only happen if everything is ok) | |
616 if (initialize_class && resolved_klass->should_be_initialized()) { | |
617 resolved_klass->initialize(CHECK); | |
618 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
619 } | |
620 | |
621 // setup result | |
622 result.set_static(resolved_klass, resolved_method, CHECK); | |
623 } | |
624 | |
625 // throws linktime exceptions | |
626 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
627 symbolHandle method_name, symbolHandle method_signature, | |
628 KlassHandle current_klass, bool check_access, TRAPS) { | |
629 | |
630 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
631 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
632 | |
633 // check if static | |
634 if (!resolved_method->is_static()) { | |
635 char buf[200]; | |
636 jio_snprintf(buf, sizeof(buf), "Expected 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 | |
643 | |
644 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, symbolHandle method_name, | |
645 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
646 methodHandle resolved_method; | |
647 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
648 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
649 } | |
650 | |
651 // throws linktime exceptions | |
652 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
653 symbolHandle method_name, symbolHandle method_signature, | |
654 KlassHandle current_klass, bool check_access, TRAPS) { | |
655 | |
656 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
657 | |
658 // check if method name is <init>, that it is found in same klass as static type | |
659 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
660 resolved_method->method_holder() != resolved_klass()) { | |
661 ResourceMark rm(THREAD); | |
662 Exceptions::fthrow( | |
663 THREAD_AND_LOCATION, | |
664 vmSymbolHandles::java_lang_NoSuchMethodError(), | |
665 "%s: method %s%s not found", | |
666 resolved_klass->external_name(), | |
667 resolved_method->name()->as_C_string(), | |
668 resolved_method->signature()->as_C_string() | |
669 ); | |
670 return; | |
671 } | |
672 | |
673 // check if not static | |
674 if (resolved_method->is_static()) { | |
675 char buf[200]; | |
676 jio_snprintf(buf, sizeof(buf), | |
677 "Expecting non-static method %s", | |
678 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
679 resolved_method->name(), | |
680 resolved_method->signature())); | |
681 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
682 } | |
683 } | |
684 | |
685 // throws runtime exceptions | |
686 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
687 KlassHandle current_klass, bool check_access, TRAPS) { | |
688 | |
689 // resolved method is selected method unless we have an old-style lookup | |
690 methodHandle sel_method(THREAD, resolved_method()); | |
691 | |
692 // check if this is an old-style super call and do a new lookup if so | |
693 { KlassHandle method_klass = KlassHandle(THREAD, | |
694 resolved_method->method_holder()); | |
695 | |
696 if (check_access && | |
697 // a) check if ACC_SUPER flag is set for the current class | |
698 current_klass->is_super() && | |
699 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
700 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
701 // c) check if the method is not <init> | |
702 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
703 // Lookup super method | |
704 KlassHandle super_klass(THREAD, current_klass->super()); | |
705 lookup_instance_method_in_klasses(sel_method, super_klass, | |
706 symbolHandle(THREAD, resolved_method->name()), | |
707 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
708 // check if found | |
709 if (sel_method.is_null()) { | |
710 ResourceMark rm(THREAD); | |
711 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
712 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
713 resolved_method->name(), | |
714 resolved_method->signature())); | |
715 } | |
716 } | |
717 } | |
718 | |
719 // check if not static | |
720 if (sel_method->is_static()) { | |
721 char buf[200]; | |
722 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
723 resolved_method->name(), | |
724 resolved_method->signature())); | |
725 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
726 } | |
727 | |
728 // check if abstract | |
729 if (sel_method->is_abstract()) { | |
730 ResourceMark rm(THREAD); | |
731 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
732 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
733 sel_method->name(), | |
734 sel_method->signature())); | |
735 } | |
736 | |
737 // setup result | |
738 result.set_static(resolved_klass, sel_method, CHECK); | |
739 } | |
740 | |
741 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
742 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
743 bool check_access, bool check_null_and_abstract, TRAPS) { | |
744 methodHandle resolved_method; | |
745 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
746 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
747 } | |
748 | |
749 // throws linktime exceptions | |
750 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
751 symbolHandle method_name, symbolHandle method_signature, | |
752 KlassHandle current_klass, bool check_access, TRAPS) { | |
753 // normal method resolution | |
754 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
755 | |
756 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
757 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
758 | |
759 // check if not static | |
760 if (resolved_method->is_static()) { | |
761 char buf[200]; | |
762 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
763 resolved_method->name(), | |
764 resolved_method->signature())); | |
765 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
766 } | |
767 } | |
768 | |
769 // throws runtime exceptions | |
770 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
771 methodHandle resolved_method, | |
772 KlassHandle resolved_klass, | |
773 Handle recv, | |
774 KlassHandle recv_klass, | |
775 bool check_null_and_abstract, | |
776 TRAPS) { | |
777 | |
778 // setup default return values | |
779 int vtable_index = methodOopDesc::invalid_vtable_index; | |
780 methodHandle selected_method; | |
781 | |
782 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
783 | |
784 // runtime method resolution | |
785 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
786 THROW(vmSymbols::java_lang_NullPointerException()); | |
787 } | |
788 | |
789 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
790 // has not been rewritten, and the vtable initialized. | |
791 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
792 | |
793 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
794 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
795 // a missing receiver might result in a bogus lookup. | |
796 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
797 | |
798 // do lookup based on receiver klass using the vtable index | |
799 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
800 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
801 symbolHandle(THREAD, resolved_method->name()), | |
802 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
803 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); | |
804 | |
805 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
806 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
807 } else { | |
808 // at this point we are sure that resolved_method is virtual and not | |
809 // a miranda method; therefore, it must have a valid vtable index. | |
810 vtable_index = resolved_method->vtable_index(); | |
811 // We could get a negative vtable_index for final methods, | |
812 // because as an optimization they are they are never put in the vtable, | |
813 // unless they override an existing method. | |
814 // If we do get a negative, it means the resolved method is the the selected | |
815 // method, and it can never be changed by an override. | |
816 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
817 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
818 selected_method = resolved_method; | |
819 } else { | |
820 // recv_klass might be an arrayKlassOop but all vtables start at | |
821 // the same place. The cast is to avoid virtual call and assertion. | |
822 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
823 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
824 } | |
825 } | |
826 | |
827 // check if method exists | |
828 if (selected_method.is_null()) { | |
829 ResourceMark rm(THREAD); | |
830 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
831 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
832 resolved_method->name(), | |
833 resolved_method->signature())); | |
834 } | |
835 | |
836 // check if abstract | |
837 if (check_null_and_abstract && selected_method->is_abstract()) { | |
838 ResourceMark rm(THREAD); | |
839 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
840 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
841 selected_method->name(), | |
842 selected_method->signature())); | |
843 } | |
844 | |
845 // setup result | |
846 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
847 } | |
848 | |
849 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
850 symbolHandle method_name, symbolHandle method_signature, KlassHandle current_klass, | |
851 bool check_access, bool check_null_and_abstract, TRAPS) { | |
852 methodHandle resolved_method; | |
853 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
854 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
855 } | |
856 | |
857 // throws linktime exceptions | |
858 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, symbolHandle method_name, | |
859 symbolHandle method_signature, KlassHandle current_klass, bool check_access, TRAPS) { | |
860 // normal interface method resolution | |
861 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
862 | |
863 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
864 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
865 } | |
866 | |
867 // throws runtime exceptions | |
868 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
869 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
870 // check if receiver exists | |
871 if (check_null_and_abstract && recv.is_null()) { | |
872 THROW(vmSymbols::java_lang_NullPointerException()); | |
873 } | |
874 | |
875 // check if receiver klass implements the resolved interface | |
876 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
877 char buf[200]; | |
878 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
879 (Klass::cast(recv_klass()))->external_name(), | |
880 (Klass::cast(resolved_klass()))->external_name()); | |
881 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
882 } | |
883 // do lookup based on receiver klass | |
884 methodHandle sel_method; | |
885 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
886 symbolHandle(THREAD, resolved_method->name()), | |
887 symbolHandle(THREAD, resolved_method->signature()), CHECK); | |
888 // check if method exists | |
889 if (sel_method.is_null()) { | |
890 ResourceMark rm(THREAD); | |
891 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
892 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
893 resolved_method->name(), | |
894 resolved_method->signature())); | |
895 } | |
896 // check if public | |
897 if (!sel_method->is_public()) { | |
898 ResourceMark rm(THREAD); | |
899 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
900 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
901 sel_method->name(), | |
902 sel_method->signature())); | |
903 } | |
904 // check if abstract | |
905 if (check_null_and_abstract && sel_method->is_abstract()) { | |
906 ResourceMark rm(THREAD); | |
907 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
908 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
909 sel_method->name(), | |
910 sel_method->signature())); | |
911 } | |
912 // setup result | |
913 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
914 } | |
915 | |
916 | |
917 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
918 KlassHandle resolved_klass, | |
919 symbolHandle method_name, | |
920 symbolHandle method_signature, | |
921 KlassHandle current_klass, | |
922 bool check_access) { | |
923 EXCEPTION_MARK; | |
924 methodHandle method_result; | |
925 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
926 if (HAS_PENDING_EXCEPTION) { | |
927 CLEAR_PENDING_EXCEPTION; | |
928 return methodHandle(); | |
929 } else { | |
930 return method_result; | |
931 } | |
932 } | |
933 | |
934 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
935 KlassHandle resolved_klass, | |
936 symbolHandle method_name, | |
937 symbolHandle method_signature, | |
938 KlassHandle current_klass, | |
939 bool check_access) { | |
940 EXCEPTION_MARK; | |
941 methodHandle method_result; | |
942 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
943 if (HAS_PENDING_EXCEPTION) { | |
944 CLEAR_PENDING_EXCEPTION; | |
945 return methodHandle(); | |
946 } else { | |
947 return method_result; | |
948 } | |
949 } | |
950 | |
951 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
952 KlassHandle receiver_klass, | |
953 KlassHandle resolved_klass, | |
954 symbolHandle name, | |
955 symbolHandle signature, | |
956 KlassHandle current_klass) { | |
957 EXCEPTION_MARK; | |
958 CallInfo info; | |
959 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
960 if (HAS_PENDING_EXCEPTION) { | |
961 CLEAR_PENDING_EXCEPTION; | |
962 return methodHandle(); | |
963 } | |
964 return info.selected_method(); | |
965 } | |
966 | |
967 methodHandle LinkResolver::resolve_interface_call_or_null( | |
968 KlassHandle receiver_klass, | |
969 KlassHandle resolved_klass, | |
970 symbolHandle name, | |
971 symbolHandle signature, | |
972 KlassHandle current_klass) { | |
973 EXCEPTION_MARK; | |
974 CallInfo info; | |
975 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
976 if (HAS_PENDING_EXCEPTION) { | |
977 CLEAR_PENDING_EXCEPTION; | |
978 return methodHandle(); | |
979 } | |
980 return info.selected_method(); | |
981 } | |
982 | |
983 int LinkResolver::resolve_virtual_vtable_index( | |
984 KlassHandle receiver_klass, | |
985 KlassHandle resolved_klass, | |
986 symbolHandle name, | |
987 symbolHandle signature, | |
988 KlassHandle current_klass) { | |
989 EXCEPTION_MARK; | |
990 CallInfo info; | |
991 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
992 if (HAS_PENDING_EXCEPTION) { | |
993 CLEAR_PENDING_EXCEPTION; | |
994 return methodOopDesc::invalid_vtable_index; | |
995 } | |
996 return info.vtable_index(); | |
997 } | |
998 | |
999 methodHandle LinkResolver::resolve_static_call_or_null( | |
1000 KlassHandle resolved_klass, | |
1001 symbolHandle name, | |
1002 symbolHandle signature, | |
1003 KlassHandle current_klass) { | |
1004 EXCEPTION_MARK; | |
1005 CallInfo info; | |
1006 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1007 if (HAS_PENDING_EXCEPTION) { | |
1008 CLEAR_PENDING_EXCEPTION; | |
1009 return methodHandle(); | |
1010 } | |
1011 return info.selected_method(); | |
1012 } | |
1013 | |
1014 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, symbolHandle name, symbolHandle signature, | |
1015 KlassHandle current_klass) { | |
1016 EXCEPTION_MARK; | |
1017 CallInfo info; | |
1018 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1019 if (HAS_PENDING_EXCEPTION) { | |
1020 CLEAR_PENDING_EXCEPTION; | |
1021 return methodHandle(); | |
1022 } | |
1023 return info.selected_method(); | |
1024 } | |
1025 | |
1026 | |
1027 | |
1028 //------------------------------------------------------------------------------------------------------------------------ | |
1029 // ConstantPool entries | |
1030 | |
1031 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1032 switch (byte) { | |
1033 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1034 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1035 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1036 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1037 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1038 } | |
1039 return; | |
1040 } | |
1041 | |
1042 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, symbolHandle& method_name, symbolHandle& method_signature, | |
1043 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { | |
1044 // resolve klass | |
1045 resolve_klass(resolved_klass, pool, index, CHECK); | |
1046 | |
1047 // Get name, signature, and static klass | |
1048 method_name = symbolHandle(THREAD, pool->name_ref_at(index)); | |
1049 method_signature = symbolHandle(THREAD, pool->signature_ref_at(index)); | |
1050 current_klass = KlassHandle(THREAD, pool->pool_holder()); | |
1051 } | |
1052 | |
1053 | |
1054 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1055 KlassHandle resolved_klass; | |
1056 symbolHandle method_name; | |
1057 symbolHandle method_signature; | |
1058 KlassHandle current_klass; | |
1059 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1060 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1061 } | |
1062 | |
1063 | |
1064 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1065 KlassHandle resolved_klass; | |
1066 symbolHandle method_name; | |
1067 symbolHandle method_signature; | |
1068 KlassHandle current_klass; | |
1069 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1070 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1071 } | |
1072 | |
1073 | |
1074 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1075 constantPoolHandle pool, int index, | |
1076 TRAPS) { | |
1077 | |
1078 KlassHandle resolved_klass; | |
1079 symbolHandle method_name; | |
1080 symbolHandle method_signature; | |
1081 KlassHandle current_klass; | |
1082 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1083 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1084 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1085 } | |
1086 | |
1087 | |
1088 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1089 KlassHandle resolved_klass; | |
1090 symbolHandle method_name; | |
1091 symbolHandle method_signature; | |
1092 KlassHandle current_klass; | |
1093 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1094 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1095 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1096 } | |
1097 | |
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1098 |
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1099 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1100 assert(EnableInvokeDynamic, ""); |
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1101 |
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1102 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1103 |
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1104 // At this point, we only need the signature, and can ignore the name. |
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1105 symbolHandle method_signature(THREAD, pool->signature_ref_at(raw_index)); // raw_index works directly |
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1106 symbolHandle method_name = vmSymbolHandles::invokeExact_name(); |
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1107 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1108 |
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1109 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1110 // The extra MH receiver will be inserted into the stack on every call. |
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1111 methodHandle resolved_method; |
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1112 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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1113 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1114 if (resolved_method.is_null()) { |
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1115 THROW(vmSymbols::java_lang_InternalError()); |
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1116 } |
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1117 result.set_dynamic(resolved_method, CHECK); |
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1118 } |
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1119 |
0 | 1120 //------------------------------------------------------------------------------------------------------------------------ |
1121 #ifndef PRODUCT | |
1122 | |
1123 void FieldAccessInfo::print() { | |
1124 ResourceMark rm; | |
1125 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1126 } | |
1127 | |
1128 #endif |