Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 4142:bc8527f3071c
Adjust code base to new level of warnings.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sun, 18 Dec 2011 05:24:06 +0100 |
parents | f08d439fab8c |
children | 1d7922586cf6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 | |
3960 | 55 #ifdef TARGET_OS_FAMILY_bsd |
56 # include "thread_bsd.inline.hpp" | |
57 #endif | |
0 | 58 |
59 //------------------------------------------------------------------------------------------------------------------------ | |
60 // Implementation of FieldAccessInfo | |
61 | |
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62 void FieldAccessInfo::set(KlassHandle klass, Symbol* name, int field_index, int field_offset, |
0 | 63 BasicType field_type, AccessFlags access_flags) { |
64 _klass = klass; | |
65 _name = name; | |
66 _field_index = field_index; | |
67 _field_offset = field_offset; | |
68 _field_type = field_type; | |
69 _access_flags = access_flags; | |
70 } | |
71 | |
72 | |
73 //------------------------------------------------------------------------------------------------------------------------ | |
74 // Implementation of CallInfo | |
75 | |
76 | |
77 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
78 int vtable_index = methodOopDesc::nonvirtual_vtable_index; | |
79 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); | |
80 } | |
81 | |
82 | |
83 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, TRAPS) { | |
84 // This is only called for interface methods. If the resolved_method | |
85 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
86 // we should pick the vtable index from the resolved method. | |
87 // Other than that case, there is no valid vtable index to specify. | |
88 int vtable_index = methodOopDesc::invalid_vtable_index; | |
1142 | 89 if (resolved_method->method_holder() == SystemDictionary::Object_klass()) { |
0 | 90 assert(resolved_method->vtable_index() == selected_method->vtable_index(), "sanity check"); |
91 vtable_index = resolved_method->vtable_index(); | |
92 } | |
93 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
94 } | |
95 | |
96 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
97 assert(vtable_index >= 0 || vtable_index == methodOopDesc::nonvirtual_vtable_index, "valid index"); | |
98 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); | |
99 } | |
100 | |
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101 void CallInfo::set_dynamic(methodHandle resolved_method, TRAPS) { |
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102 assert(resolved_method->is_method_handle_invoke(), ""); |
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103 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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104 assert(resolved_klass == resolved_method->method_holder(), ""); |
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105 int vtable_index = methodOopDesc::nonvirtual_vtable_index; |
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106 assert(resolved_method->vtable_index() == vtable_index, ""); |
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107 set_common(resolved_klass, KlassHandle(), resolved_method, resolved_method, vtable_index, CHECK); |
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108 } |
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109 |
0 | 110 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
111 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
112 _resolved_klass = resolved_klass; | |
113 _selected_klass = selected_klass; | |
114 _resolved_method = resolved_method; | |
115 _selected_method = selected_method; | |
116 _vtable_index = vtable_index; | |
1783 | 117 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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118 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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119 |
1783 | 120 // Note: with several active threads, the must_be_compiled may be true |
121 // while can_be_compiled is false; remove assert | |
122 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 123 if (THREAD->is_Compiler_thread()) { |
124 // don't force compilation, resolve was on behalf of compiler | |
125 return; | |
126 } | |
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127 if (instanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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128 // 'is_not_initialized' means not only '!is_initialized', but also that |
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129 // initialization has not been started yet ('!being_initialized') |
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130 // Do not force compilation of methods in uninitialized classes. |
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131 // Note that doing this would throw an assert later, |
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132 // in CompileBroker::compile_method. |
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133 // We sometimes use the link resolver to do reflective lookups |
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134 // even before classes are initialized. |
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135 return; |
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136 } |
0 | 137 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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138 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 139 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 140 } |
141 } | |
142 | |
143 | |
144 //------------------------------------------------------------------------------------------------------------------------ | |
145 // Klass resolution | |
146 | |
147 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
148 if (!Reflection::verify_class_access(ref_klass->as_klassOop(), | |
149 sel_klass->as_klassOop(), | |
150 true)) { | |
151 ResourceMark rm(THREAD); | |
152 Exceptions::fthrow( | |
153 THREAD_AND_LOCATION, | |
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154 vmSymbols::java_lang_IllegalAccessError(), |
0 | 155 "tried to access class %s from class %s", |
156 sel_klass->external_name(), | |
157 ref_klass->external_name() | |
158 ); | |
159 return; | |
160 } | |
161 } | |
162 | |
163 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
164 klassOop result_oop = pool->klass_ref_at(index, CHECK); | |
165 result = KlassHandle(THREAD, result_oop); | |
166 } | |
167 | |
168 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
169 klassOop result_oop = | |
170 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK); | |
171 result = KlassHandle(THREAD, result_oop); | |
172 } | |
173 | |
174 | |
175 //------------------------------------------------------------------------------------------------------------------------ | |
176 // Method resolution | |
177 // | |
178 // According to JVM spec. $5.4.3c & $5.4.3d | |
179 | |
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180 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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181 methodOop result_oop = klass->uncached_lookup_method(name, signature); |
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182 if (EnableInvokeDynamic && result_oop != NULL) { |
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183 switch (result_oop->intrinsic_id()) { |
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184 case vmIntrinsics::_invokeExact: |
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185 case vmIntrinsics::_invokeGeneric: |
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186 case vmIntrinsics::_invokeDynamic: |
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187 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method. |
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188 return; |
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189 } |
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190 } |
0 | 191 result = methodHandle(THREAD, result_oop); |
192 } | |
193 | |
194 // returns first instance method | |
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195 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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196 methodOop result_oop = klass->uncached_lookup_method(name, signature); |
0 | 197 result = methodHandle(THREAD, result_oop); |
198 while (!result.is_null() && result->is_static()) { | |
199 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
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200 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 201 } |
202 } | |
203 | |
204 | |
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205 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 206 ResourceMark rm(THREAD); |
207 klassVtable *vt = instanceKlass::cast(klass())->vtable(); | |
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208 return vt->index_of_miranda(name, signature); |
0 | 209 } |
210 | |
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211 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 212 instanceKlass *ik = instanceKlass::cast(klass()); |
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213 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 214 } |
215 | |
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216 void LinkResolver::lookup_implicit_method(methodHandle& result, |
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217 KlassHandle klass, Symbol* name, Symbol* signature, |
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218 KlassHandle current_klass, |
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219 TRAPS) { |
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220 if (EnableInvokeDynamic && |
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221 klass() == SystemDictionary::MethodHandle_klass() && |
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222 methodOopDesc::is_method_handle_invoke_name(name)) { |
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223 if (!THREAD->is_Compiler_thread() && !MethodHandles::enabled()) { |
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224 // Make sure the Java part of the runtime has been booted up. |
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225 klassOop natives = SystemDictionary::MethodHandleNatives_klass(); |
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226 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) { |
2460 | 227 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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228 Handle(), |
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229 Handle(), |
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230 true, |
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231 CHECK); |
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232 } |
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233 } |
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234 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name, |
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235 signature, |
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236 current_klass, |
710 | 237 CHECK); |
238 if (result_oop != NULL) { | |
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239 assert(result_oop->is_method_handle_invoke() && result_oop->signature() == signature, "consistent"); |
710 | 240 result = methodHandle(THREAD, result_oop); |
241 } | |
242 } | |
243 } | |
244 | |
0 | 245 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
246 KlassHandle resolved_klass, | |
247 KlassHandle sel_klass, | |
248 methodHandle sel_method, | |
249 TRAPS) { | |
250 | |
251 AccessFlags flags = sel_method->access_flags(); | |
252 | |
253 // Special case: arrays always override "clone". JVMS 2.15. | |
254 // If the resolved klass is an array class, and the declaring class | |
255 // is java.lang.Object and the method is "clone", set the flags | |
256 // to public. | |
257 // | |
258 // We'll check for the method name first, as that's most likely | |
259 // to be false (so we'll short-circuit out of these tests). | |
260 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 261 sel_klass() == SystemDictionary::Object_klass() && |
0 | 262 resolved_klass->oop_is_array()) { |
263 // We need to change "protected" to "public". | |
264 assert(flags.is_protected(), "clone not protected?"); | |
265 jint new_flags = flags.as_int(); | |
266 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
267 new_flags = new_flags | JVM_ACC_PUBLIC; | |
268 flags.set_flags(new_flags); | |
269 } | |
270 | |
271 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
272 resolved_klass->as_klassOop(), | |
273 sel_klass->as_klassOop(), | |
274 flags, | |
275 true)) { | |
276 ResourceMark rm(THREAD); | |
277 Exceptions::fthrow( | |
278 THREAD_AND_LOCATION, | |
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279 vmSymbols::java_lang_IllegalAccessError(), |
0 | 280 "tried to access method %s.%s%s from class %s", |
281 sel_klass->external_name(), | |
282 sel_method->name()->as_C_string(), | |
283 sel_method->signature()->as_C_string(), | |
284 ref_klass->external_name() | |
285 ); | |
286 return; | |
287 } | |
288 } | |
289 | |
290 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle& resolved_klass, | |
291 constantPoolHandle pool, int index, TRAPS) { | |
292 | |
293 // resolve klass | |
294 resolve_klass(resolved_klass, pool, index, CHECK); | |
295 | |
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296 Symbol* method_name = pool->name_ref_at(index); |
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297 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 298 KlassHandle current_klass(THREAD, pool->pool_holder()); |
299 | |
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300 if (pool->has_preresolution() |
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301 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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302 methodOopDesc::is_method_handle_invoke_name(method_name))) { |
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303 methodOop result_oop = constantPoolOopDesc::method_at_if_loaded(pool, index); |
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304 if (result_oop != NULL) { |
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305 resolved_method = methodHandle(THREAD, result_oop); |
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306 return; |
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307 } |
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308 } |
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309 |
0 | 310 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
311 } | |
312 | |
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313 void LinkResolver::resolve_dynamic_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
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314 // The class is java.lang.invoke.MethodHandle |
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315 resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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316 |
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317 Symbol* method_name = vmSymbols::invokeExact_name(); |
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318 |
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319 Symbol* method_signature = pool->signature_ref_at(index); |
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320 KlassHandle current_klass (THREAD, pool->pool_holder()); |
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321 |
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322 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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323 } |
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324 |
0 | 325 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, KlassHandle& resolved_klass, constantPoolHandle pool, int index, TRAPS) { |
326 | |
327 // resolve klass | |
328 resolve_klass(resolved_klass, pool, index, CHECK); | |
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329 Symbol* method_name = pool->name_ref_at(index); |
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330 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 331 KlassHandle current_klass(THREAD, pool->pool_holder()); |
332 | |
333 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
334 } | |
335 | |
336 | |
337 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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338 Symbol* method_name, Symbol* method_signature, |
0 | 339 KlassHandle current_klass, bool check_access, TRAPS) { |
340 | |
341 // 1. check if klass is not interface | |
342 if (resolved_klass->is_interface()) { | |
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343 ResourceMark rm(THREAD); |
0 | 344 char buf[200]; |
345 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
346 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
347 } | |
348 | |
349 // 2. lookup method in resolved klass and its super klasses | |
350 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
351 | |
352 if (resolved_method.is_null()) { // not found in the class hierarchy | |
353 // 3. lookup method in all the interfaces implemented by the resolved klass | |
354 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
355 | |
356 if (resolved_method.is_null()) { | |
710 | 357 // JSR 292: see if this is an implicitly generated method MethodHandle.invoke(*...) |
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358 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, CHECK); |
710 | 359 } |
360 | |
361 if (resolved_method.is_null()) { | |
0 | 362 // 4. method lookup failed |
363 ResourceMark rm(THREAD); | |
364 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
365 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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366 method_name, |
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367 method_signature)); |
0 | 368 } |
369 } | |
370 | |
371 // 5. check if method is concrete | |
372 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
373 ResourceMark rm(THREAD); | |
374 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
375 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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376 method_name, |
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377 method_signature)); |
0 | 378 } |
379 | |
380 // 6. access checks, access checking may be turned off when calling from within the VM. | |
381 if (check_access) { | |
382 assert(current_klass.not_null() , "current_klass should not be null"); | |
383 | |
384 // check if method can be accessed by the referring class | |
385 check_method_accessability(current_klass, | |
386 resolved_klass, | |
387 KlassHandle(THREAD, resolved_method->method_holder()), | |
388 resolved_method, | |
389 CHECK); | |
390 | |
391 // check loader constraints | |
392 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
393 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
394 { | |
395 ResourceMark rm(THREAD); | |
396 char* failed_type_name = | |
397 SystemDictionary::check_signature_loaders(method_signature, loader, | |
398 class_loader, true, CHECK); | |
399 if (failed_type_name != NULL) { | |
400 const char* msg = "loader constraint violation: when resolving method" | |
401 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
402 " and the class loader (instance of %s) for resolved class, %s, have" | |
403 " different Class objects for the type %s used in the signature"; | |
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404 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
0 | 405 const char* loader1 = SystemDictionary::loader_name(loader()); |
406 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
407 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
408 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
409 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
410 strlen(current) + strlen(loader2) + strlen(resolved) + | |
411 strlen(failed_type_name); | |
412 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
413 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
414 resolved, failed_type_name); | |
415 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
416 } | |
417 } | |
418 } | |
419 } | |
420 | |
421 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
422 KlassHandle resolved_klass, | |
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423 Symbol* method_name, |
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424 Symbol* method_signature, |
0 | 425 KlassHandle current_klass, |
426 bool check_access, TRAPS) { | |
427 | |
428 // check if klass is interface | |
429 if (!resolved_klass->is_interface()) { | |
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430 ResourceMark rm(THREAD); |
0 | 431 char buf[200]; |
432 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
433 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
434 } | |
435 | |
436 // lookup method in this interface or its super, java.lang.Object | |
437 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
438 | |
439 if (resolved_method.is_null()) { | |
440 // lookup method in all the super-interfaces | |
441 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
442 if (resolved_method.is_null()) { | |
443 // no method found | |
444 ResourceMark rm(THREAD); | |
445 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
446 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
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447 method_name, |
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448 method_signature)); |
0 | 449 } |
450 } | |
451 | |
452 if (check_access) { | |
453 HandleMark hm(THREAD); | |
454 Handle loader (THREAD, instanceKlass::cast(current_klass())->class_loader()); | |
455 Handle class_loader (THREAD, instanceKlass::cast(resolved_method->method_holder())->class_loader()); | |
456 { | |
457 ResourceMark rm(THREAD); | |
458 char* failed_type_name = | |
459 SystemDictionary::check_signature_loaders(method_signature, loader, | |
460 class_loader, true, CHECK); | |
461 if (failed_type_name != NULL) { | |
462 const char* msg = "loader constraint violation: when resolving " | |
463 "interface method \"%s\" the class loader (instance of %s) of the " | |
464 "current class, %s, and the class loader (instance of %s) for " | |
465 "resolved class, %s, have different Class objects for the type %s " | |
466 "used in the signature"; | |
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467 char* sig = methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
0 | 468 const char* loader1 = SystemDictionary::loader_name(loader()); |
469 char* current = instanceKlass::cast(current_klass())->name()->as_C_string(); | |
470 const char* loader2 = SystemDictionary::loader_name(class_loader()); | |
471 char* resolved = instanceKlass::cast(resolved_klass())->name()->as_C_string(); | |
472 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + | |
473 strlen(current) + strlen(loader2) + strlen(resolved) + | |
474 strlen(failed_type_name); | |
475 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
476 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
477 resolved, failed_type_name); | |
478 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
479 } | |
480 } | |
481 } | |
482 } | |
483 | |
484 //------------------------------------------------------------------------------------------------------------------------ | |
485 // Field resolution | |
486 | |
487 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
488 KlassHandle resolved_klass, | |
489 KlassHandle sel_klass, | |
490 fieldDescriptor& fd, | |
491 TRAPS) { | |
492 if (!Reflection::verify_field_access(ref_klass->as_klassOop(), | |
493 resolved_klass->as_klassOop(), | |
494 sel_klass->as_klassOop(), | |
495 fd.access_flags(), | |
496 true)) { | |
497 ResourceMark rm(THREAD); | |
498 Exceptions::fthrow( | |
499 THREAD_AND_LOCATION, | |
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500 vmSymbols::java_lang_IllegalAccessError(), |
0 | 501 "tried to access field %s.%s from class %s", |
502 sel_klass->external_name(), | |
503 fd.name()->as_C_string(), | |
504 ref_klass->external_name() | |
505 ); | |
506 return; | |
507 } | |
508 } | |
509 | |
510 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
511 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
512 } | |
513 | |
514 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
515 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
516 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
517 | |
518 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
519 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
520 | |
521 // resolve specified klass | |
522 KlassHandle resolved_klass; | |
523 if (update_pool) { | |
524 resolve_klass(resolved_klass, pool, index, CHECK); | |
525 } else { | |
526 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
527 } | |
528 // Load these early in case the resolve of the containing klass fails | |
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529 Symbol* field = pool->name_ref_at(index); |
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530 Symbol* sig = pool->signature_ref_at(index); |
0 | 531 // Check if there's a resolved klass containing the field |
532 if( resolved_klass.is_null() ) { | |
533 ResourceMark rm(THREAD); | |
534 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
535 } | |
536 | |
537 // Resolve instance field | |
538 fieldDescriptor fd; // find_field initializes fd if found | |
539 KlassHandle sel_klass(THREAD, instanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); | |
540 // check if field exists; i.e., if a klass containing the field def has been selected | |
541 if (sel_klass.is_null()){ | |
542 ResourceMark rm(THREAD); | |
543 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
544 } | |
545 | |
546 // check access | |
547 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
548 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
549 | |
550 // check for errors | |
551 if (is_static != fd.is_static()) { | |
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552 ResourceMark rm(THREAD); |
0 | 553 char msg[200]; |
554 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()); | |
555 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
556 } | |
557 | |
558 // Final fields can only be accessed from its own class. | |
559 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
560 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
561 } | |
562 | |
563 // initialize resolved_klass if necessary | |
564 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
565 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
566 // | |
567 // note 2: we don't want to force initialization if we are just checking | |
568 // if the field access is legal; e.g., during compilation | |
569 if (is_static && !check_only) { | |
570 sel_klass->initialize(CHECK); | |
571 } | |
572 | |
573 { | |
574 HandleMark hm(THREAD); | |
575 Handle ref_loader (THREAD, instanceKlass::cast(ref_klass())->class_loader()); | |
576 Handle sel_loader (THREAD, instanceKlass::cast(sel_klass())->class_loader()); | |
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577 Symbol* signature_ref = pool->signature_ref_at(index); |
0 | 578 { |
579 ResourceMark rm(THREAD); | |
580 char* failed_type_name = | |
581 SystemDictionary::check_signature_loaders(signature_ref, | |
582 ref_loader, sel_loader, | |
583 false, | |
584 CHECK); | |
585 if (failed_type_name != NULL) { | |
586 const char* msg = "loader constraint violation: when resolving field" | |
587 " \"%s\" the class loader (instance of %s) of the referring class, " | |
588 "%s, and the class loader (instance of %s) for the field's resolved " | |
589 "type, %s, have different Class objects for that type"; | |
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590 char* field_name = field->as_C_string(); |
0 | 591 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
592 char* sel = instanceKlass::cast(sel_klass())->name()->as_C_string(); | |
593 const char* loader2 = SystemDictionary::loader_name(sel_loader()); | |
594 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
595 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
596 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
597 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
598 failed_type_name); | |
599 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
600 } | |
601 } | |
602 } | |
603 | |
604 // return information. note that the klass is set to the actual klass containing the | |
605 // field, otherwise access of static fields in superclasses will not work. | |
606 KlassHandle holder (THREAD, fd.field_holder()); | |
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607 Symbol* name = fd.name(); |
0 | 608 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
609 } | |
610 | |
611 | |
612 //------------------------------------------------------------------------------------------------------------------------ | |
613 // Invoke resolution | |
614 // | |
615 // Naming conventions: | |
616 // | |
617 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
618 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
619 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
620 // recv_klass the receiver klass | |
621 | |
622 | |
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623 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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624 Symbol* method_signature, KlassHandle current_klass, |
0 | 625 bool check_access, bool initialize_class, TRAPS) { |
626 methodHandle resolved_method; | |
627 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
628 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
629 | |
630 // Initialize klass (this should only happen if everything is ok) | |
631 if (initialize_class && resolved_klass->should_be_initialized()) { | |
632 resolved_klass->initialize(CHECK); | |
633 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
634 } | |
635 | |
636 // setup result | |
637 result.set_static(resolved_klass, resolved_method, CHECK); | |
638 } | |
639 | |
640 // throws linktime exceptions | |
641 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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642 Symbol* method_name, Symbol* method_signature, |
0 | 643 KlassHandle current_klass, bool check_access, TRAPS) { |
644 | |
645 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
646 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
647 | |
648 // check if static | |
649 if (!resolved_method->is_static()) { | |
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650 ResourceMark rm(THREAD); |
0 | 651 char buf[200]; |
652 jio_snprintf(buf, sizeof(buf), "Expected static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
653 resolved_method->name(), | |
654 resolved_method->signature())); | |
655 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
656 } | |
657 } | |
658 | |
659 | |
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660 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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661 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 662 methodHandle resolved_method; |
663 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
664 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
665 } | |
666 | |
667 // throws linktime exceptions | |
668 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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669 Symbol* method_name, Symbol* method_signature, |
0 | 670 KlassHandle current_klass, bool check_access, TRAPS) { |
671 | |
672 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
673 | |
674 // check if method name is <init>, that it is found in same klass as static type | |
675 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
676 resolved_method->method_holder() != resolved_klass()) { | |
677 ResourceMark rm(THREAD); | |
678 Exceptions::fthrow( | |
679 THREAD_AND_LOCATION, | |
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680 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 681 "%s: method %s%s not found", |
682 resolved_klass->external_name(), | |
683 resolved_method->name()->as_C_string(), | |
684 resolved_method->signature()->as_C_string() | |
685 ); | |
686 return; | |
687 } | |
688 | |
689 // check if not static | |
690 if (resolved_method->is_static()) { | |
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691 ResourceMark rm(THREAD); |
0 | 692 char buf[200]; |
693 jio_snprintf(buf, sizeof(buf), | |
694 "Expecting non-static method %s", | |
695 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
696 resolved_method->name(), | |
697 resolved_method->signature())); | |
698 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
699 } | |
700 } | |
701 | |
702 // throws runtime exceptions | |
703 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
704 KlassHandle current_klass, bool check_access, TRAPS) { | |
705 | |
706 // resolved method is selected method unless we have an old-style lookup | |
707 methodHandle sel_method(THREAD, resolved_method()); | |
708 | |
709 // check if this is an old-style super call and do a new lookup if so | |
710 { KlassHandle method_klass = KlassHandle(THREAD, | |
711 resolved_method->method_holder()); | |
712 | |
713 if (check_access && | |
714 // a) check if ACC_SUPER flag is set for the current class | |
715 current_klass->is_super() && | |
716 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) | |
717 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
718 // c) check if the method is not <init> | |
719 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
720 // Lookup super method | |
721 KlassHandle super_klass(THREAD, current_klass->super()); | |
722 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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723 resolved_method->name(), |
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724 resolved_method->signature(), CHECK); |
0 | 725 // check if found |
726 if (sel_method.is_null()) { | |
727 ResourceMark rm(THREAD); | |
728 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
729 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
730 resolved_method->name(), | |
731 resolved_method->signature())); | |
732 } | |
733 } | |
734 } | |
735 | |
736 // check if not static | |
737 if (sel_method->is_static()) { | |
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738 ResourceMark rm(THREAD); |
0 | 739 char buf[200]; |
740 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
741 resolved_method->name(), | |
742 resolved_method->signature())); | |
743 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
744 } | |
745 | |
746 // check if abstract | |
747 if (sel_method->is_abstract()) { | |
748 ResourceMark rm(THREAD); | |
749 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
750 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
751 sel_method->name(), | |
752 sel_method->signature())); | |
753 } | |
754 | |
755 // setup result | |
756 result.set_static(resolved_klass, sel_method, CHECK); | |
757 } | |
758 | |
759 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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760 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 761 bool check_access, bool check_null_and_abstract, TRAPS) { |
762 methodHandle resolved_method; | |
763 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
764 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
765 } | |
766 | |
767 // throws linktime exceptions | |
768 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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769 Symbol* method_name, Symbol* method_signature, |
0 | 770 KlassHandle current_klass, bool check_access, TRAPS) { |
771 // normal method resolution | |
772 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
773 | |
774 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
775 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
776 | |
777 // check if not static | |
778 if (resolved_method->is_static()) { | |
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779 ResourceMark rm(THREAD); |
0 | 780 char buf[200]; |
781 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
782 resolved_method->name(), | |
783 resolved_method->signature())); | |
784 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
785 } | |
786 } | |
787 | |
788 // throws runtime exceptions | |
789 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
790 methodHandle resolved_method, | |
791 KlassHandle resolved_klass, | |
792 Handle recv, | |
793 KlassHandle recv_klass, | |
794 bool check_null_and_abstract, | |
795 TRAPS) { | |
796 | |
797 // setup default return values | |
798 int vtable_index = methodOopDesc::invalid_vtable_index; | |
799 methodHandle selected_method; | |
800 | |
801 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
802 | |
803 // runtime method resolution | |
804 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
805 THROW(vmSymbols::java_lang_NullPointerException()); | |
806 } | |
807 | |
808 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
809 // has not been rewritten, and the vtable initialized. | |
810 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
811 | |
812 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the methodOop's | |
813 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since | |
814 // a missing receiver might result in a bogus lookup. | |
815 assert(instanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); | |
816 | |
817 // do lookup based on receiver klass using the vtable index | |
818 if (resolved_method->method_holder()->klass_part()->is_interface()) { // miranda method | |
819 vtable_index = vtable_index_of_miranda_method(resolved_klass, | |
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820 resolved_method->name(), |
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821 resolved_method->signature(), CHECK); |
0 | 822 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
823 | |
824 instanceKlass* inst = instanceKlass::cast(recv_klass()); | |
825 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
826 } else { | |
827 // at this point we are sure that resolved_method is virtual and not | |
828 // a miranda method; therefore, it must have a valid vtable index. | |
829 vtable_index = resolved_method->vtable_index(); | |
830 // We could get a negative vtable_index for final methods, | |
831 // because as an optimization they are they are never put in the vtable, | |
832 // unless they override an existing method. | |
833 // If we do get a negative, it means the resolved method is the the selected | |
834 // method, and it can never be changed by an override. | |
835 if (vtable_index == methodOopDesc::nonvirtual_vtable_index) { | |
836 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); | |
837 selected_method = resolved_method; | |
838 } else { | |
839 // recv_klass might be an arrayKlassOop but all vtables start at | |
840 // the same place. The cast is to avoid virtual call and assertion. | |
841 instanceKlass* inst = (instanceKlass*)recv_klass()->klass_part(); | |
842 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); | |
843 } | |
844 } | |
845 | |
846 // check if method exists | |
847 if (selected_method.is_null()) { | |
848 ResourceMark rm(THREAD); | |
849 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
850 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
851 resolved_method->name(), | |
852 resolved_method->signature())); | |
853 } | |
854 | |
855 // check if abstract | |
856 if (check_null_and_abstract && selected_method->is_abstract()) { | |
857 ResourceMark rm(THREAD); | |
858 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
859 methodOopDesc::name_and_sig_as_C_string(Klass::cast(resolved_klass()), | |
860 selected_method->name(), | |
861 selected_method->signature())); | |
862 } | |
863 | |
864 // setup result | |
865 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
866 } | |
867 | |
868 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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869 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 870 bool check_access, bool check_null_and_abstract, TRAPS) { |
871 methodHandle resolved_method; | |
872 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
873 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
874 } | |
875 | |
876 // throws linktime exceptions | |
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877 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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878 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 879 // normal interface method resolution |
880 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
881 | |
882 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
883 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
884 } | |
885 | |
886 // throws runtime exceptions | |
887 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
888 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
889 // check if receiver exists | |
890 if (check_null_and_abstract && recv.is_null()) { | |
891 THROW(vmSymbols::java_lang_NullPointerException()); | |
892 } | |
893 | |
894 // check if receiver klass implements the resolved interface | |
895 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
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896 ResourceMark rm(THREAD); |
0 | 897 char buf[200]; |
898 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
899 (Klass::cast(recv_klass()))->external_name(), | |
900 (Klass::cast(resolved_klass()))->external_name()); | |
901 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
902 } | |
903 // do lookup based on receiver klass | |
904 methodHandle sel_method; | |
905 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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906 resolved_method->name(), |
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907 resolved_method->signature(), CHECK); |
0 | 908 // check if method exists |
909 if (sel_method.is_null()) { | |
910 ResourceMark rm(THREAD); | |
911 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
912 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
913 resolved_method->name(), | |
914 resolved_method->signature())); | |
915 } | |
916 // check if public | |
917 if (!sel_method->is_public()) { | |
918 ResourceMark rm(THREAD); | |
919 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
920 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
921 sel_method->name(), | |
922 sel_method->signature())); | |
923 } | |
924 // check if abstract | |
925 if (check_null_and_abstract && sel_method->is_abstract()) { | |
926 ResourceMark rm(THREAD); | |
927 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
928 methodOopDesc::name_and_sig_as_C_string(Klass::cast(recv_klass()), | |
929 sel_method->name(), | |
930 sel_method->signature())); | |
931 } | |
932 // setup result | |
933 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
934 } | |
935 | |
936 | |
937 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
938 KlassHandle resolved_klass, | |
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939 Symbol* method_name, |
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940 Symbol* method_signature, |
0 | 941 KlassHandle current_klass, |
942 bool check_access) { | |
943 EXCEPTION_MARK; | |
944 methodHandle method_result; | |
945 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
946 if (HAS_PENDING_EXCEPTION) { | |
947 CLEAR_PENDING_EXCEPTION; | |
948 return methodHandle(); | |
949 } else { | |
950 return method_result; | |
951 } | |
952 } | |
953 | |
954 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
955 KlassHandle resolved_klass, | |
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956 Symbol* method_name, |
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957 Symbol* method_signature, |
0 | 958 KlassHandle current_klass, |
959 bool check_access) { | |
960 EXCEPTION_MARK; | |
961 methodHandle method_result; | |
962 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
963 if (HAS_PENDING_EXCEPTION) { | |
964 CLEAR_PENDING_EXCEPTION; | |
965 return methodHandle(); | |
966 } else { | |
967 return method_result; | |
968 } | |
969 } | |
970 | |
971 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
972 KlassHandle receiver_klass, | |
973 KlassHandle resolved_klass, | |
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974 Symbol* name, |
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975 Symbol* signature, |
0 | 976 KlassHandle current_klass) { |
977 EXCEPTION_MARK; | |
978 CallInfo info; | |
979 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
980 if (HAS_PENDING_EXCEPTION) { | |
981 CLEAR_PENDING_EXCEPTION; | |
982 return methodHandle(); | |
983 } | |
984 return info.selected_method(); | |
985 } | |
986 | |
987 methodHandle LinkResolver::resolve_interface_call_or_null( | |
988 KlassHandle receiver_klass, | |
989 KlassHandle resolved_klass, | |
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990 Symbol* name, |
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991 Symbol* signature, |
0 | 992 KlassHandle current_klass) { |
993 EXCEPTION_MARK; | |
994 CallInfo info; | |
995 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
996 if (HAS_PENDING_EXCEPTION) { | |
997 CLEAR_PENDING_EXCEPTION; | |
998 return methodHandle(); | |
999 } | |
1000 return info.selected_method(); | |
1001 } | |
1002 | |
1003 int LinkResolver::resolve_virtual_vtable_index( | |
1004 KlassHandle receiver_klass, | |
1005 KlassHandle resolved_klass, | |
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1006 Symbol* name, |
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1007 Symbol* signature, |
0 | 1008 KlassHandle current_klass) { |
1009 EXCEPTION_MARK; | |
1010 CallInfo info; | |
1011 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1012 if (HAS_PENDING_EXCEPTION) { | |
1013 CLEAR_PENDING_EXCEPTION; | |
1014 return methodOopDesc::invalid_vtable_index; | |
1015 } | |
1016 return info.vtable_index(); | |
1017 } | |
1018 | |
1019 methodHandle LinkResolver::resolve_static_call_or_null( | |
1020 KlassHandle resolved_klass, | |
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1021 Symbol* name, |
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1022 Symbol* signature, |
0 | 1023 KlassHandle current_klass) { |
1024 EXCEPTION_MARK; | |
1025 CallInfo info; | |
1026 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1027 if (HAS_PENDING_EXCEPTION) { | |
1028 CLEAR_PENDING_EXCEPTION; | |
1029 return methodHandle(); | |
1030 } | |
1031 return info.selected_method(); | |
1032 } | |
1033 | |
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1034 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1035 KlassHandle current_klass) { |
1036 EXCEPTION_MARK; | |
1037 CallInfo info; | |
1038 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1039 if (HAS_PENDING_EXCEPTION) { | |
1040 CLEAR_PENDING_EXCEPTION; | |
1041 return methodHandle(); | |
1042 } | |
1043 return info.selected_method(); | |
1044 } | |
1045 | |
1046 | |
1047 | |
1048 //------------------------------------------------------------------------------------------------------------------------ | |
1049 // ConstantPool entries | |
1050 | |
1051 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1052 switch (byte) { | |
1053 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1054 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1055 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1056 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1057 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1058 } | |
1059 return; | |
1060 } | |
1061 | |
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1062 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1063 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1064 // resolve klass | |
1065 resolve_klass(resolved_klass, pool, index, CHECK); | |
1066 | |
1067 // Get name, signature, and static klass | |
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1068 method_name = pool->name_ref_at(index); |
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1069 method_signature = pool->signature_ref_at(index); |
0 | 1070 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1071 } | |
1072 | |
1073 | |
1074 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1075 KlassHandle resolved_klass; | |
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1076 Symbol* method_name = NULL; |
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1077 Symbol* method_signature = NULL; |
0 | 1078 KlassHandle current_klass; |
1079 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1080 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1081 } | |
1082 | |
1083 | |
1084 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1085 KlassHandle resolved_klass; | |
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1086 Symbol* method_name = NULL; |
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1087 Symbol* method_signature = NULL; |
0 | 1088 KlassHandle current_klass; |
1089 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1090 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1091 } | |
1092 | |
1093 | |
1094 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1095 constantPoolHandle pool, int index, | |
1096 TRAPS) { | |
1097 | |
1098 KlassHandle resolved_klass; | |
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1099 Symbol* method_name = NULL; |
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1100 Symbol* method_signature = NULL; |
0 | 1101 KlassHandle current_klass; |
1102 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1103 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1104 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1105 } | |
1106 | |
1107 | |
1108 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1109 KlassHandle resolved_klass; | |
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1110 Symbol* method_name = NULL; |
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1111 Symbol* method_signature = NULL; |
0 | 1112 KlassHandle current_klass; |
1113 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1114 KlassHandle recvrKlass (THREAD, recv.is_null() ? (klassOop)NULL : recv->klass()); | |
1115 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1116 } | |
1117 | |
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1118 |
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1119 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int raw_index, TRAPS) { |
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1120 assert(EnableInvokeDynamic, ""); |
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1121 |
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1122 // This guy is reached from InterpreterRuntime::resolve_invokedynamic. |
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1123 |
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1124 // At this point, we only need the signature, and can ignore the name. |
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1125 Symbol* method_signature = pool->signature_ref_at(raw_index); // raw_index works directly |
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1126 Symbol* method_name = vmSymbols::invokeExact_name(); |
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1127 KlassHandle resolved_klass = SystemDictionaryHandles::MethodHandle_klass(); |
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1128 |
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1129 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) |
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1130 // The extra MH receiver will be inserted into the stack on every call. |
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1131 methodHandle resolved_method; |
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1132 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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1133 lookup_implicit_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, THREAD); |
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1134 if (HAS_PENDING_EXCEPTION) { |
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1135 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1136 // throw these guys, since they are already wrapped |
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1137 return; |
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1138 } |
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1139 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1140 // intercept only LinkageErrors which might have failed to wrap |
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1141 return; |
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1142 } |
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1143 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1144 Handle ex(THREAD, PENDING_EXCEPTION); |
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1145 CLEAR_PENDING_EXCEPTION; |
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1146 oop bsme = Klass::cast(SystemDictionary::BootstrapMethodError_klass())->java_mirror(); |
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1147 MethodHandles::raise_exception(Bytecodes::_athrow, ex(), bsme, CHECK); |
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1148 // java code should not return, but if it does throw out anyway |
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1149 THROW(vmSymbols::java_lang_InternalError()); |
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1150 } |
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1151 if (resolved_method.is_null()) { |
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1152 THROW(vmSymbols::java_lang_InternalError()); |
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1153 } |
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1154 result.set_dynamic(resolved_method, CHECK); |
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1155 } |
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1156 |
0 | 1157 //------------------------------------------------------------------------------------------------------------------------ |
1158 #ifndef PRODUCT | |
1159 | |
1160 void FieldAccessInfo::print() { | |
1161 ResourceMark rm; | |
1162 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1163 } | |
1164 | |
1165 #endif |