Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 8702:77443715ec55
8001307: Modify ACC_SUPER behavior
Summary: Disallow non-virtual calls even when ACC_SUPER is absent.
Reviewed-by: kvn, acorn
author | kamg |
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date | Mon, 05 Nov 2012 17:03:33 -0500 |
parents | f6b0eb4e44cf |
children | b5cb079ecaa4 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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) { | |
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78 int vtable_index = Method::nonvirtual_vtable_index; |
0 | 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. | |
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88 int vtable_index = Method::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) { | |
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97 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
0 | 98 set_common(resolved_klass, selected_klass, resolved_method, selected_method, vtable_index, CHECK); |
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99 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 100 } |
101 | |
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102 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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103 if (resolved_method.is_null()) { |
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104 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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105 } |
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106 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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107 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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108 resolved_method->is_compiled_lambda_form(), |
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109 "linkMethod must return one of these"); |
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110 int vtable_index = Method::nonvirtual_vtable_index; |
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111 assert(resolved_method->vtable_index() == vtable_index, ""); |
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112 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, vtable_index, CHECK); |
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113 _resolved_appendix = resolved_appendix; |
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114 _resolved_method_type = resolved_method_type; |
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115 } |
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116 |
0 | 117 void CallInfo::set_common(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { |
118 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); | |
119 _resolved_klass = resolved_klass; | |
120 _selected_klass = selected_klass; | |
121 _resolved_method = resolved_method; | |
122 _selected_method = selected_method; | |
123 _vtable_index = vtable_index; | |
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124 _resolved_appendix = Handle(); |
1783 | 125 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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126 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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127 |
1783 | 128 // Note: with several active threads, the must_be_compiled may be true |
129 // while can_be_compiled is false; remove assert | |
130 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 131 if (THREAD->is_Compiler_thread()) { |
132 // don't force compilation, resolve was on behalf of compiler | |
133 return; | |
134 } | |
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135 if (InstanceKlass::cast(selected_method->method_holder())->is_not_initialized()) { |
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136 // 'is_not_initialized' means not only '!is_initialized', but also that |
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137 // initialization has not been started yet ('!being_initialized') |
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138 // Do not force compilation of methods in uninitialized classes. |
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139 // Note that doing this would throw an assert later, |
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140 // in CompileBroker::compile_method. |
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141 // We sometimes use the link resolver to do reflective lookups |
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142 // even before classes are initialized. |
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143 return; |
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144 } |
0 | 145 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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146 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 147 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 148 } |
149 } | |
150 | |
151 | |
152 //------------------------------------------------------------------------------------------------------------------------ | |
153 // Klass resolution | |
154 | |
155 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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156 if (!Reflection::verify_class_access(ref_klass(), |
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157 sel_klass(), |
0 | 158 true)) { |
159 ResourceMark rm(THREAD); | |
160 Exceptions::fthrow( | |
161 THREAD_AND_LOCATION, | |
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162 vmSymbols::java_lang_IllegalAccessError(), |
0 | 163 "tried to access class %s from class %s", |
164 sel_klass->external_name(), | |
165 ref_klass->external_name() | |
166 ); | |
167 return; | |
168 } | |
169 } | |
170 | |
171 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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172 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 173 result = KlassHandle(THREAD, result_oop); |
174 } | |
175 | |
176 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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177 Klass* result_oop = |
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178 ConstantPool::klass_ref_at_if_loaded_check(pool, index, CHECK); |
0 | 179 result = KlassHandle(THREAD, result_oop); |
180 } | |
181 | |
182 | |
183 //------------------------------------------------------------------------------------------------------------------------ | |
184 // Method resolution | |
185 // | |
186 // According to JVM spec. $5.4.3c & $5.4.3d | |
187 | |
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188 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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189 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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190 if (EnableInvokeDynamic && result_oop != NULL) { |
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191 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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192 if (MethodHandles::is_signature_polymorphic(iid)) { |
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193 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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194 return; |
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195 } |
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196 } |
0 | 197 result = methodHandle(THREAD, result_oop); |
198 } | |
199 | |
200 // returns first instance method | |
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201 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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202 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 203 result = methodHandle(THREAD, result_oop); |
204 while (!result.is_null() && result->is_static()) { | |
205 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super()); | |
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206 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 207 } |
208 } | |
209 | |
210 | |
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211 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
0 | 212 ResourceMark rm(THREAD); |
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213 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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214 return vt->index_of_miranda(name, signature); |
0 | 215 } |
216 | |
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217 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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218 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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219 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 220 } |
221 | |
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222 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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223 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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224 KlassHandle current_klass, |
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225 Handle *appendix_result_or_null, |
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226 Handle *method_type_result, |
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227 TRAPS) { |
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228 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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229 if (TraceMethodHandles) { |
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230 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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231 vmIntrinsics::name_at(iid), klass->external_name(), |
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232 name->as_C_string(), full_signature->as_C_string()); |
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233 } |
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234 if (EnableInvokeDynamic && |
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235 klass() == SystemDictionary::MethodHandle_klass() && |
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236 iid != vmIntrinsics::_none) { |
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237 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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238 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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239 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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240 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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241 TempNewSymbol basic_signature = |
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242 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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243 if (TraceMethodHandles) { |
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244 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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245 name->as_C_string(), |
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246 full_signature->as_C_string(), |
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247 basic_signature->as_C_string()); |
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248 } |
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249 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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250 basic_signature, |
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251 CHECK); |
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252 if (result.not_null()) { |
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253 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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254 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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255 assert(basic_signature == result->signature(), "predict the result signature"); |
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256 if (TraceMethodHandles) { |
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257 tty->print("lookup_polymorphic_method => intrinsic "); |
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258 result->print_on(tty); |
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259 } |
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260 return; |
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261 } |
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262 } else if (iid == vmIntrinsics::_invokeGeneric |
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263 && !THREAD->is_Compiler_thread() |
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264 && appendix_result_or_null != NULL) { |
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265 // This is a method with type-checking semantics. |
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266 // We will ask Java code to spin an adapter method for it. |
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267 if (!MethodHandles::enabled()) { |
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268 // Make sure the Java part of the runtime has been booted up. |
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269 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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270 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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271 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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272 Handle(), |
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273 Handle(), |
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274 true, |
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275 CHECK); |
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276 } |
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277 } |
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278 |
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279 Handle appendix; |
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280 Handle method_type; |
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281 result = SystemDictionary::find_method_handle_invoker(name, |
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282 full_signature, |
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283 current_klass, |
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284 &appendix, |
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285 &method_type, |
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286 CHECK); |
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287 if (TraceMethodHandles) { |
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288 tty->print("lookup_polymorphic_method => (via Java) "); |
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289 result->print_on(tty); |
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290 tty->print(" lookup_polymorphic_method => appendix = "); |
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291 if (appendix.is_null()) tty->print_cr("(none)"); |
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292 else appendix->print_on(tty); |
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293 } |
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294 if (result.not_null()) { |
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295 #ifdef ASSERT |
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296 TempNewSymbol basic_signature = |
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297 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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298 int actual_size_of_params = result->size_of_parameters(); |
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299 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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300 // +1 for MethodHandle.this, +1 for trailing MethodType |
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301 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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302 if (appendix.not_null()) expected_size_of_params += 1; |
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303 if (actual_size_of_params != expected_size_of_params) { |
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304 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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305 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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306 result->print(); |
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307 } |
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308 assert(actual_size_of_params == expected_size_of_params, |
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309 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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310 #endif //ASSERT |
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311 |
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312 assert(appendix_result_or_null != NULL, ""); |
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313 (*appendix_result_or_null) = appendix; |
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314 (*method_type_result) = method_type; |
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315 return; |
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316 } |
710 | 317 } |
318 } | |
319 } | |
320 | |
0 | 321 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
322 KlassHandle resolved_klass, | |
323 KlassHandle sel_klass, | |
324 methodHandle sel_method, | |
325 TRAPS) { | |
326 | |
327 AccessFlags flags = sel_method->access_flags(); | |
328 | |
329 // Special case: arrays always override "clone". JVMS 2.15. | |
330 // If the resolved klass is an array class, and the declaring class | |
331 // is java.lang.Object and the method is "clone", set the flags | |
332 // to public. | |
333 // | |
334 // We'll check for the method name first, as that's most likely | |
335 // to be false (so we'll short-circuit out of these tests). | |
336 if (sel_method->name() == vmSymbols::clone_name() && | |
1142 | 337 sel_klass() == SystemDictionary::Object_klass() && |
0 | 338 resolved_klass->oop_is_array()) { |
339 // We need to change "protected" to "public". | |
340 assert(flags.is_protected(), "clone not protected?"); | |
341 jint new_flags = flags.as_int(); | |
342 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
343 new_flags = new_flags | JVM_ACC_PUBLIC; | |
344 flags.set_flags(new_flags); | |
345 } | |
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346 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 347 |
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348 if (!Reflection::verify_field_access(ref_klass(), |
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349 resolved_klass(), |
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350 sel_klass(), |
0 | 351 flags, |
352 true)) { | |
353 ResourceMark rm(THREAD); | |
354 Exceptions::fthrow( | |
355 THREAD_AND_LOCATION, | |
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356 vmSymbols::java_lang_IllegalAccessError(), |
0 | 357 "tried to access method %s.%s%s from class %s", |
358 sel_klass->external_name(), | |
359 sel_method->name()->as_C_string(), | |
360 sel_method->signature()->as_C_string(), | |
361 ref_klass->external_name() | |
362 ); | |
363 return; | |
364 } | |
365 } | |
366 | |
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367 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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368 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
0 | 369 |
370 // resolve klass | |
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371 if (code == Bytecodes::_invokedynamic) { |
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372 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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373 Symbol* method_name = vmSymbols::invoke_name(); |
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374 Symbol* method_signature = pool->signature_ref_at(index); |
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375 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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376 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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377 return; |
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378 } |
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379 |
0 | 380 resolve_klass(resolved_klass, pool, index, CHECK); |
381 | |
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382 Symbol* method_name = pool->name_ref_at(index); |
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383 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 384 KlassHandle current_klass(THREAD, pool->pool_holder()); |
385 | |
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386 if (pool->has_preresolution() |
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387 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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388 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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389 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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390 if (result_oop != NULL) { |
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391 resolved_method = methodHandle(THREAD, result_oop); |
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392 return; |
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393 } |
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394 } |
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395 |
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396 if (code == Bytecodes::_invokeinterface) { |
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397 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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398 } else { |
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399 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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400 } |
0 | 401 } |
402 | |
403 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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404 Symbol* method_name, Symbol* method_signature, |
0 | 405 KlassHandle current_klass, bool check_access, TRAPS) { |
406 | |
407 // 1. check if klass is not interface | |
408 if (resolved_klass->is_interface()) { | |
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409 ResourceMark rm(THREAD); |
0 | 410 char buf[200]; |
411 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", Klass::cast(resolved_klass())->external_name()); | |
412 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
413 } | |
414 | |
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415 Handle nested_exception; |
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416 |
0 | 417 // 2. lookup method in resolved klass and its super klasses |
418 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
419 | |
420 if (resolved_method.is_null()) { // not found in the class hierarchy | |
421 // 3. lookup method in all the interfaces implemented by the resolved klass | |
422 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
423 | |
424 if (resolved_method.is_null()) { | |
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425 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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426 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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427 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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428 if (HAS_PENDING_EXCEPTION) { |
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429 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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430 CLEAR_PENDING_EXCEPTION; |
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431 } |
710 | 432 } |
433 | |
434 if (resolved_method.is_null()) { | |
0 | 435 // 4. method lookup failed |
436 ResourceMark rm(THREAD); | |
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437 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
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438 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
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439 method_name, |
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440 method_signature), |
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441 nested_exception); |
0 | 442 } |
443 } | |
444 | |
445 // 5. check if method is concrete | |
446 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
447 ResourceMark rm(THREAD); | |
448 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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449 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
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450 method_name, |
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451 method_signature)); |
0 | 452 } |
453 | |
454 // 6. access checks, access checking may be turned off when calling from within the VM. | |
455 if (check_access) { | |
456 assert(current_klass.not_null() , "current_klass should not be null"); | |
457 | |
458 // check if method can be accessed by the referring class | |
459 check_method_accessability(current_klass, | |
460 resolved_klass, | |
461 KlassHandle(THREAD, resolved_method->method_holder()), | |
462 resolved_method, | |
463 CHECK); | |
464 | |
465 // check loader constraints | |
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466 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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467 Handle class_loader (THREAD, InstanceKlass::cast(resolved_method->method_holder())->class_loader()); |
0 | 468 { |
469 ResourceMark rm(THREAD); | |
470 char* failed_type_name = | |
471 SystemDictionary::check_signature_loaders(method_signature, loader, | |
472 class_loader, true, CHECK); | |
473 if (failed_type_name != NULL) { | |
474 const char* msg = "loader constraint violation: when resolving method" | |
475 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
476 " and the class loader (instance of %s) for resolved class, %s, have" | |
477 " different Class objects for the type %s used in the signature"; | |
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478 char* sig = Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
0 | 479 const char* loader1 = SystemDictionary::loader_name(loader()); |
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480 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 481 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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482 char* resolved = InstanceKlass::cast(resolved_klass())->name()->as_C_string(); |
0 | 483 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
484 strlen(current) + strlen(loader2) + strlen(resolved) + | |
485 strlen(failed_type_name); | |
486 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
487 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
488 resolved, failed_type_name); | |
489 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
490 } | |
491 } | |
492 } | |
493 } | |
494 | |
495 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
496 KlassHandle resolved_klass, | |
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497 Symbol* method_name, |
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498 Symbol* method_signature, |
0 | 499 KlassHandle current_klass, |
500 bool check_access, TRAPS) { | |
501 | |
502 // check if klass is interface | |
503 if (!resolved_klass->is_interface()) { | |
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504 ResourceMark rm(THREAD); |
0 | 505 char buf[200]; |
506 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", Klass::cast(resolved_klass())->external_name()); | |
507 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
508 } | |
509 | |
510 // lookup method in this interface or its super, java.lang.Object | |
511 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
512 | |
513 if (resolved_method.is_null()) { | |
514 // lookup method in all the super-interfaces | |
515 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
516 if (resolved_method.is_null()) { | |
517 // no method found | |
518 ResourceMark rm(THREAD); | |
519 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
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520 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
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521 method_name, |
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522 method_signature)); |
0 | 523 } |
524 } | |
525 | |
526 if (check_access) { | |
527 HandleMark hm(THREAD); | |
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528 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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529 Handle class_loader (THREAD, InstanceKlass::cast(resolved_method->method_holder())->class_loader()); |
0 | 530 { |
531 ResourceMark rm(THREAD); | |
532 char* failed_type_name = | |
533 SystemDictionary::check_signature_loaders(method_signature, loader, | |
534 class_loader, true, CHECK); | |
535 if (failed_type_name != NULL) { | |
536 const char* msg = "loader constraint violation: when resolving " | |
537 "interface method \"%s\" the class loader (instance of %s) of the " | |
538 "current class, %s, and the class loader (instance of %s) for " | |
539 "resolved class, %s, have different Class objects for the type %s " | |
540 "used in the signature"; | |
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541 char* sig = Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()),method_name,method_signature); |
0 | 542 const char* loader1 = SystemDictionary::loader_name(loader()); |
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543 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 544 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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545 char* resolved = InstanceKlass::cast(resolved_klass())->name()->as_C_string(); |
0 | 546 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
547 strlen(current) + strlen(loader2) + strlen(resolved) + | |
548 strlen(failed_type_name); | |
549 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
550 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
551 resolved, failed_type_name); | |
552 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
553 } | |
554 } | |
555 } | |
556 } | |
557 | |
558 //------------------------------------------------------------------------------------------------------------------------ | |
559 // Field resolution | |
560 | |
561 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
562 KlassHandle resolved_klass, | |
563 KlassHandle sel_klass, | |
564 fieldDescriptor& fd, | |
565 TRAPS) { | |
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566 if (!Reflection::verify_field_access(ref_klass(), |
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567 resolved_klass(), |
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568 sel_klass(), |
0 | 569 fd.access_flags(), |
570 true)) { | |
571 ResourceMark rm(THREAD); | |
572 Exceptions::fthrow( | |
573 THREAD_AND_LOCATION, | |
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574 vmSymbols::java_lang_IllegalAccessError(), |
0 | 575 "tried to access field %s.%s from class %s", |
576 sel_klass->external_name(), | |
577 fd.name()->as_C_string(), | |
578 ref_klass->external_name() | |
579 ); | |
580 return; | |
581 } | |
582 } | |
583 | |
584 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, TRAPS) { | |
585 resolve_field(result, pool, index, byte, check_only, true, CHECK); | |
586 } | |
587 | |
588 void LinkResolver::resolve_field(FieldAccessInfo& result, constantPoolHandle pool, int index, Bytecodes::Code byte, bool check_only, bool update_pool, TRAPS) { | |
589 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || | |
590 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield, "bad bytecode"); | |
591 | |
592 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
593 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
594 | |
595 // resolve specified klass | |
596 KlassHandle resolved_klass; | |
597 if (update_pool) { | |
598 resolve_klass(resolved_klass, pool, index, CHECK); | |
599 } else { | |
600 resolve_klass_no_update(resolved_klass, pool, index, CHECK); | |
601 } | |
602 // Load these early in case the resolve of the containing klass fails | |
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603 Symbol* field = pool->name_ref_at(index); |
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604 Symbol* sig = pool->signature_ref_at(index); |
0 | 605 // Check if there's a resolved klass containing the field |
606 if( resolved_klass.is_null() ) { | |
607 ResourceMark rm(THREAD); | |
608 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
609 } | |
610 | |
611 // Resolve instance field | |
612 fieldDescriptor fd; // find_field initializes fd if found | |
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613 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 614 // check if field exists; i.e., if a klass containing the field def has been selected |
615 if (sel_klass.is_null()){ | |
616 ResourceMark rm(THREAD); | |
617 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
618 } | |
619 | |
620 // check access | |
621 KlassHandle ref_klass(THREAD, pool->pool_holder()); | |
622 check_field_accessability(ref_klass, resolved_klass, sel_klass, fd, CHECK); | |
623 | |
624 // check for errors | |
625 if (is_static != fd.is_static()) { | |
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626 ResourceMark rm(THREAD); |
0 | 627 char msg[200]; |
628 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()); | |
629 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); | |
630 } | |
631 | |
632 // Final fields can only be accessed from its own class. | |
633 if (is_put && fd.access_flags().is_final() && sel_klass() != pool->pool_holder()) { | |
634 THROW(vmSymbols::java_lang_IllegalAccessError()); | |
635 } | |
636 | |
637 // initialize resolved_klass if necessary | |
638 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
639 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
640 // | |
641 // note 2: we don't want to force initialization if we are just checking | |
642 // if the field access is legal; e.g., during compilation | |
643 if (is_static && !check_only) { | |
644 sel_klass->initialize(CHECK); | |
645 } | |
646 | |
647 { | |
648 HandleMark hm(THREAD); | |
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649 Handle ref_loader (THREAD, InstanceKlass::cast(ref_klass())->class_loader()); |
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650 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
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651 Symbol* signature_ref = pool->signature_ref_at(index); |
0 | 652 { |
653 ResourceMark rm(THREAD); | |
654 char* failed_type_name = | |
655 SystemDictionary::check_signature_loaders(signature_ref, | |
656 ref_loader, sel_loader, | |
657 false, | |
658 CHECK); | |
659 if (failed_type_name != NULL) { | |
660 const char* msg = "loader constraint violation: when resolving field" | |
661 " \"%s\" the class loader (instance of %s) of the referring class, " | |
662 "%s, and the class loader (instance of %s) for the field's resolved " | |
663 "type, %s, have different Class objects for that type"; | |
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664 char* field_name = field->as_C_string(); |
0 | 665 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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666 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 667 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
668 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + | |
669 strlen(sel) + strlen(loader2) + strlen(failed_type_name); | |
670 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); | |
671 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
672 failed_type_name); | |
673 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
674 } | |
675 } | |
676 } | |
677 | |
678 // return information. note that the klass is set to the actual klass containing the | |
679 // field, otherwise access of static fields in superclasses will not work. | |
680 KlassHandle holder (THREAD, fd.field_holder()); | |
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681 Symbol* name = fd.name(); |
0 | 682 result.set(holder, name, fd.index(), fd.offset(), fd.field_type(), fd.access_flags()); |
683 } | |
684 | |
685 | |
686 //------------------------------------------------------------------------------------------------------------------------ | |
687 // Invoke resolution | |
688 // | |
689 // Naming conventions: | |
690 // | |
691 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
692 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
693 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
694 // recv_klass the receiver klass | |
695 | |
696 | |
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697 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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698 Symbol* method_signature, KlassHandle current_klass, |
0 | 699 bool check_access, bool initialize_class, TRAPS) { |
700 methodHandle resolved_method; | |
701 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
702 resolved_klass = KlassHandle(THREAD, Klass::cast(resolved_method->method_holder())); | |
703 | |
704 // Initialize klass (this should only happen if everything is ok) | |
705 if (initialize_class && resolved_klass->should_be_initialized()) { | |
706 resolved_klass->initialize(CHECK); | |
707 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
708 } | |
709 | |
710 // setup result | |
711 result.set_static(resolved_klass, resolved_method, CHECK); | |
712 } | |
713 | |
714 // throws linktime exceptions | |
715 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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716 Symbol* method_name, Symbol* method_signature, |
0 | 717 KlassHandle current_klass, bool check_access, TRAPS) { |
718 | |
719 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
720 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); | |
721 | |
722 // check if static | |
723 if (!resolved_method->is_static()) { | |
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724 ResourceMark rm(THREAD); |
0 | 725 char buf[200]; |
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726 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 727 resolved_method->name(), |
728 resolved_method->signature())); | |
729 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
730 } | |
731 } | |
732 | |
733 | |
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734 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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735 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 736 methodHandle resolved_method; |
737 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
738 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
739 } | |
740 | |
741 // throws linktime exceptions | |
742 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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743 Symbol* method_name, Symbol* method_signature, |
0 | 744 KlassHandle current_klass, bool check_access, TRAPS) { |
745 | |
746 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
747 | |
748 // check if method name is <init>, that it is found in same klass as static type | |
749 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
750 resolved_method->method_holder() != resolved_klass()) { | |
751 ResourceMark rm(THREAD); | |
752 Exceptions::fthrow( | |
753 THREAD_AND_LOCATION, | |
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754 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 755 "%s: method %s%s not found", |
756 resolved_klass->external_name(), | |
757 resolved_method->name()->as_C_string(), | |
758 resolved_method->signature()->as_C_string() | |
759 ); | |
760 return; | |
761 } | |
762 | |
763 // check if not static | |
764 if (resolved_method->is_static()) { | |
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765 ResourceMark rm(THREAD); |
0 | 766 char buf[200]; |
767 jio_snprintf(buf, sizeof(buf), | |
768 "Expecting non-static method %s", | |
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769 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 770 resolved_method->name(), |
771 resolved_method->signature())); | |
772 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
773 } | |
774 } | |
775 | |
776 // throws runtime exceptions | |
777 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
778 KlassHandle current_klass, bool check_access, TRAPS) { | |
779 | |
780 // resolved method is selected method unless we have an old-style lookup | |
781 methodHandle sel_method(THREAD, resolved_method()); | |
782 | |
783 // check if this is an old-style super call and do a new lookup if so | |
784 { KlassHandle method_klass = KlassHandle(THREAD, | |
785 resolved_method->method_holder()); | |
786 | |
787 if (check_access && | |
788 // a) check if ACC_SUPER flag is set for the current class | |
8702 | 789 (current_klass->is_super() || !AllowNonVirtualCalls) && |
0 | 790 // b) check if the method class is a superclass of the current class (superclass relation is not reflexive!) |
791 current_klass->is_subtype_of(method_klass()) && current_klass() != method_klass() && | |
792 // c) check if the method is not <init> | |
793 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
794 // Lookup super method | |
795 KlassHandle super_klass(THREAD, current_klass->super()); | |
796 lookup_instance_method_in_klasses(sel_method, super_klass, | |
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797 resolved_method->name(), |
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798 resolved_method->signature(), CHECK); |
0 | 799 // check if found |
800 if (sel_method.is_null()) { | |
801 ResourceMark rm(THREAD); | |
802 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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803 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 804 resolved_method->name(), |
805 resolved_method->signature())); | |
806 } | |
807 } | |
808 } | |
809 | |
810 // check if not static | |
811 if (sel_method->is_static()) { | |
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812 ResourceMark rm(THREAD); |
0 | 813 char buf[200]; |
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814 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 815 resolved_method->name(), |
816 resolved_method->signature())); | |
817 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
818 } | |
819 | |
820 // check if abstract | |
821 if (sel_method->is_abstract()) { | |
822 ResourceMark rm(THREAD); | |
823 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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824 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 825 sel_method->name(), |
826 sel_method->signature())); | |
827 } | |
828 | |
829 // setup result | |
830 result.set_static(resolved_klass, sel_method, CHECK); | |
831 } | |
832 | |
833 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
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834 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 835 bool check_access, bool check_null_and_abstract, TRAPS) { |
836 methodHandle resolved_method; | |
837 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
838 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
839 } | |
840 | |
841 // throws linktime exceptions | |
842 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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843 Symbol* method_name, Symbol* method_signature, |
0 | 844 KlassHandle current_klass, bool check_access, TRAPS) { |
845 // normal method resolution | |
846 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
847 | |
848 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
849 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
850 | |
851 // check if not static | |
852 if (resolved_method->is_static()) { | |
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853 ResourceMark rm(THREAD); |
0 | 854 char buf[200]; |
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855 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 856 resolved_method->name(), |
857 resolved_method->signature())); | |
858 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
859 } | |
860 } | |
861 | |
862 // throws runtime exceptions | |
863 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
864 methodHandle resolved_method, | |
865 KlassHandle resolved_klass, | |
866 Handle recv, | |
867 KlassHandle recv_klass, | |
868 bool check_null_and_abstract, | |
869 TRAPS) { | |
870 | |
871 // setup default return values | |
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872 int vtable_index = Method::invalid_vtable_index; |
0 | 873 methodHandle selected_method; |
874 | |
875 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
876 | |
877 // runtime method resolution | |
878 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
879 THROW(vmSymbols::java_lang_NullPointerException()); | |
880 } | |
881 | |
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882 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 883 // has not been rewritten, and the vtable initialized. |
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884 assert(InstanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); |
0 | 885 |
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886 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 887 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
888 // a missing receiver might result in a bogus lookup. | |
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889 assert(InstanceKlass::cast(resolved_method->method_holder())->is_linked(), "must be linked"); |
0 | 890 |
891 // do lookup based on receiver klass using the vtable index | |
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892 if (resolved_method->method_holder()->is_interface()) { // miranda method |
0 | 893 vtable_index = vtable_index_of_miranda_method(resolved_klass, |
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894 resolved_method->name(), |
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895 resolved_method->signature(), CHECK); |
0 | 896 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
897 | |
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898 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 899 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
900 } else { | |
901 // at this point we are sure that resolved_method is virtual and not | |
902 // a miranda method; therefore, it must have a valid vtable index. | |
903 vtable_index = resolved_method->vtable_index(); | |
904 // We could get a negative vtable_index for final methods, | |
905 // because as an optimization they are they are never put in the vtable, | |
906 // unless they override an existing method. | |
907 // If we do get a negative, it means the resolved method is the the selected | |
908 // method, and it can never be changed by an override. | |
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909 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 910 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
911 selected_method = resolved_method; | |
912 } else { | |
913 // recv_klass might be an arrayKlassOop but all vtables start at | |
914 // the same place. The cast is to avoid virtual call and assertion. | |
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915 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 916 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
917 } | |
918 } | |
919 | |
920 // check if method exists | |
921 if (selected_method.is_null()) { | |
922 ResourceMark rm(THREAD); | |
923 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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924 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 925 resolved_method->name(), |
926 resolved_method->signature())); | |
927 } | |
928 | |
929 // check if abstract | |
930 if (check_null_and_abstract && selected_method->is_abstract()) { | |
931 ResourceMark rm(THREAD); | |
932 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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933 Method::name_and_sig_as_C_string(Klass::cast(resolved_klass()), |
0 | 934 selected_method->name(), |
935 selected_method->signature())); | |
936 } | |
937 | |
938 // setup result | |
939 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
940 } | |
941 | |
942 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
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943 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 944 bool check_access, bool check_null_and_abstract, TRAPS) { |
945 methodHandle resolved_method; | |
946 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
947 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
948 } | |
949 | |
950 // throws linktime exceptions | |
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951 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
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952 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 953 // normal interface method resolution |
954 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
955 | |
956 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
957 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
958 } | |
959 | |
960 // throws runtime exceptions | |
961 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
962 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
963 // check if receiver exists | |
964 if (check_null_and_abstract && recv.is_null()) { | |
965 THROW(vmSymbols::java_lang_NullPointerException()); | |
966 } | |
967 | |
968 // check if receiver klass implements the resolved interface | |
969 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
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970 ResourceMark rm(THREAD); |
0 | 971 char buf[200]; |
972 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
973 (Klass::cast(recv_klass()))->external_name(), | |
974 (Klass::cast(resolved_klass()))->external_name()); | |
975 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
976 } | |
977 // do lookup based on receiver klass | |
978 methodHandle sel_method; | |
979 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
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980 resolved_method->name(), |
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981 resolved_method->signature(), CHECK); |
0 | 982 // check if method exists |
983 if (sel_method.is_null()) { | |
984 ResourceMark rm(THREAD); | |
985 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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986 Method::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
0 | 987 resolved_method->name(), |
988 resolved_method->signature())); | |
989 } | |
990 // check if public | |
991 if (!sel_method->is_public()) { | |
992 ResourceMark rm(THREAD); | |
993 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), | |
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994 Method::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
0 | 995 sel_method->name(), |
996 sel_method->signature())); | |
997 } | |
998 // check if abstract | |
999 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1000 ResourceMark rm(THREAD); | |
1001 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
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1002 Method::name_and_sig_as_C_string(Klass::cast(recv_klass()), |
0 | 1003 sel_method->name(), |
1004 sel_method->signature())); | |
1005 } | |
1006 // setup result | |
1007 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, CHECK); | |
1008 } | |
1009 | |
1010 | |
1011 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1012 KlassHandle resolved_klass, | |
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1013 Symbol* method_name, |
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1014 Symbol* method_signature, |
0 | 1015 KlassHandle current_klass, |
1016 bool check_access) { | |
1017 EXCEPTION_MARK; | |
1018 methodHandle method_result; | |
1019 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1020 if (HAS_PENDING_EXCEPTION) { | |
1021 CLEAR_PENDING_EXCEPTION; | |
1022 return methodHandle(); | |
1023 } else { | |
1024 return method_result; | |
1025 } | |
1026 } | |
1027 | |
1028 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1029 KlassHandle resolved_klass, | |
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1030 Symbol* method_name, |
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1031 Symbol* method_signature, |
0 | 1032 KlassHandle current_klass, |
1033 bool check_access) { | |
1034 EXCEPTION_MARK; | |
1035 methodHandle method_result; | |
1036 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1037 if (HAS_PENDING_EXCEPTION) { | |
1038 CLEAR_PENDING_EXCEPTION; | |
1039 return methodHandle(); | |
1040 } else { | |
1041 return method_result; | |
1042 } | |
1043 } | |
1044 | |
1045 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1046 KlassHandle receiver_klass, | |
1047 KlassHandle resolved_klass, | |
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1048 Symbol* name, |
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1049 Symbol* signature, |
0 | 1050 KlassHandle current_klass) { |
1051 EXCEPTION_MARK; | |
1052 CallInfo info; | |
1053 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1054 if (HAS_PENDING_EXCEPTION) { | |
1055 CLEAR_PENDING_EXCEPTION; | |
1056 return methodHandle(); | |
1057 } | |
1058 return info.selected_method(); | |
1059 } | |
1060 | |
1061 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1062 KlassHandle receiver_klass, | |
1063 KlassHandle resolved_klass, | |
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1064 Symbol* name, |
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1065 Symbol* signature, |
0 | 1066 KlassHandle current_klass) { |
1067 EXCEPTION_MARK; | |
1068 CallInfo info; | |
1069 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1070 if (HAS_PENDING_EXCEPTION) { | |
1071 CLEAR_PENDING_EXCEPTION; | |
1072 return methodHandle(); | |
1073 } | |
1074 return info.selected_method(); | |
1075 } | |
1076 | |
1077 int LinkResolver::resolve_virtual_vtable_index( | |
1078 KlassHandle receiver_klass, | |
1079 KlassHandle resolved_klass, | |
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1080 Symbol* name, |
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1081 Symbol* signature, |
0 | 1082 KlassHandle current_klass) { |
1083 EXCEPTION_MARK; | |
1084 CallInfo info; | |
1085 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1086 if (HAS_PENDING_EXCEPTION) { | |
1087 CLEAR_PENDING_EXCEPTION; | |
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1088 return Method::invalid_vtable_index; |
0 | 1089 } |
1090 return info.vtable_index(); | |
1091 } | |
1092 | |
1093 methodHandle LinkResolver::resolve_static_call_or_null( | |
1094 KlassHandle resolved_klass, | |
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1095 Symbol* name, |
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1096 Symbol* signature, |
0 | 1097 KlassHandle current_klass) { |
1098 EXCEPTION_MARK; | |
1099 CallInfo info; | |
1100 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1101 if (HAS_PENDING_EXCEPTION) { | |
1102 CLEAR_PENDING_EXCEPTION; | |
1103 return methodHandle(); | |
1104 } | |
1105 return info.selected_method(); | |
1106 } | |
1107 | |
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1108 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1109 KlassHandle current_klass) { |
1110 EXCEPTION_MARK; | |
1111 CallInfo info; | |
1112 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1113 if (HAS_PENDING_EXCEPTION) { | |
1114 CLEAR_PENDING_EXCEPTION; | |
1115 return methodHandle(); | |
1116 } | |
1117 return info.selected_method(); | |
1118 } | |
1119 | |
1120 | |
1121 | |
1122 //------------------------------------------------------------------------------------------------------------------------ | |
1123 // ConstantPool entries | |
1124 | |
1125 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1126 switch (byte) { | |
1127 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1128 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1129 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1130 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1131 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1132 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1133 } | |
1134 return; | |
1135 } | |
1136 | |
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1137 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1138 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1139 // resolve klass | |
1140 resolve_klass(resolved_klass, pool, index, CHECK); | |
1141 | |
1142 // Get name, signature, and static klass | |
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1143 method_name = pool->name_ref_at(index); |
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1144 method_signature = pool->signature_ref_at(index); |
0 | 1145 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1146 } | |
1147 | |
1148 | |
1149 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1150 KlassHandle resolved_klass; | |
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1151 Symbol* method_name = NULL; |
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1152 Symbol* method_signature = NULL; |
0 | 1153 KlassHandle current_klass; |
1154 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1155 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1156 } | |
1157 | |
1158 | |
1159 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1160 KlassHandle resolved_klass; | |
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1161 Symbol* method_name = NULL; |
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1162 Symbol* method_signature = NULL; |
0 | 1163 KlassHandle current_klass; |
1164 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1165 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1166 } | |
1167 | |
1168 | |
1169 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1170 constantPoolHandle pool, int index, | |
1171 TRAPS) { | |
1172 | |
1173 KlassHandle resolved_klass; | |
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1174 Symbol* method_name = NULL; |
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1175 Symbol* method_signature = NULL; |
0 | 1176 KlassHandle current_klass; |
1177 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1178 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1179 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1180 } | |
1181 | |
1182 | |
1183 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1184 KlassHandle resolved_klass; | |
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1185 Symbol* method_name = NULL; |
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1186 Symbol* method_signature = NULL; |
0 | 1187 KlassHandle current_klass; |
1188 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1189 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1190 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1191 } | |
1192 | |
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1193 |
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1194 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1195 assert(EnableInvokeDynamic, ""); |
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1196 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1197 KlassHandle resolved_klass; |
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1198 Symbol* method_name = NULL; |
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1199 Symbol* method_signature = NULL; |
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1200 KlassHandle current_klass; |
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1201 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
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1202 if (TraceMethodHandles) |
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1203 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
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1204 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1205 } |
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1206 |
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1207 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1208 Symbol* method_name, Symbol* method_signature, |
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1209 KlassHandle current_klass, |
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1210 TRAPS) { |
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1211 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1212 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1213 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1214 methodHandle resolved_method; |
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1215 Handle resolved_appendix; |
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1216 Handle resolved_method_type; |
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1217 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1218 method_name, method_signature, |
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1219 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1220 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1221 } |
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1222 |
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1223 |
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1224 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1225 assert(EnableInvokeDynamic, ""); |
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1226 pool->set_invokedynamic(); // mark header to flag active call sites |
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1227 |
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1228 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1229 Symbol* method_name = pool->name_ref_at(index); |
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1230 Symbol* method_signature = pool->signature_ref_at(index); |
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1231 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1232 |
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1233 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1234 Handle bootstrap_specifier; |
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1235 // Check if CallSite has been bound already: |
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1236 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1237 if (cpce->is_f1_null()) { |
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1238 int pool_index = cpce->constant_pool_index(); |
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1239 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1240 assert(bsm_info != NULL, ""); |
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1241 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1242 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1243 } |
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1244 if (!cpce->is_f1_null()) { |
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1245 methodHandle method( THREAD, cpce->f1_as_method()); |
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1246 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1247 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1248 result.set_handle(method, appendix, method_type, CHECK); |
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1249 return; |
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1250 } |
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1251 |
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1252 if (TraceMethodHandles) { |
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1253 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1254 ConstantPool::decode_invokedynamic_index(index), |
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1255 method_name->as_C_string(), method_signature->as_C_string()); |
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1256 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1257 } |
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1258 |
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1259 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1260 } |
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1261 |
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1262 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1263 Handle bootstrap_specifier, |
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1264 Symbol* method_name, Symbol* method_signature, |
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1265 KlassHandle current_klass, |
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1266 TRAPS) { |
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1267 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1268 // The appendix argument is likely to be a freshly-created CallSite. |
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1269 Handle resolved_appendix; |
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1270 Handle resolved_method_type; |
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1271 methodHandle resolved_method = |
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1272 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1273 bootstrap_specifier, |
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1274 method_name, method_signature, |
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1275 &resolved_appendix, |
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1276 &resolved_method_type, |
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1277 THREAD); |
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1278 if (HAS_PENDING_EXCEPTION) { |
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1279 if (TraceMethodHandles) { |
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1280 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, PENDING_EXCEPTION); |
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1281 PENDING_EXCEPTION->print(); |
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1282 } |
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1283 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1284 // throw these guys, since they are already wrapped |
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1285 return; |
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1286 } |
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1287 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1288 // intercept only LinkageErrors which might have failed to wrap |
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1289 return; |
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1290 } |
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1291 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1292 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1293 CLEAR_PENDING_EXCEPTION; |
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1294 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1295 } |
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1296 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1297 } |
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1298 |
0 | 1299 //------------------------------------------------------------------------------------------------------------------------ |
1300 #ifndef PRODUCT | |
1301 | |
1302 void FieldAccessInfo::print() { | |
1303 ResourceMark rm; | |
1304 tty->print_cr("Field %s@%d", name()->as_C_string(), field_offset()); | |
1305 } | |
1306 | |
1307 #endif |