Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
| author | never |
|---|---|
| date | Sun, 25 Sep 2011 16:03:29 -0700 |
| parents | 43f9d800f276 |
| children | 1d7922586cf6 |
| rev | line source |
|---|---|
| 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 |