Mercurial > hg > truffle
annotate src/share/vm/interpreter/linkResolver.cpp @ 13401:22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
Summary: Add verification to check that invokespecial of an InterfaceMethodref names a method in a direct superinterface of the current class or interface in accordance with JSR 335, JVMS 4.9.2 Structural Constraints.
Reviewed-by: acorn, hseigel, coleenp
Contributed-by: lois.foltan@oracle.com
author | hseigel |
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date | Tue, 26 Nov 2013 09:52:22 -0500 |
parents | fce21ac5968d |
children | 7a58803b5069 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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" |
6934 | 26 #include "classfile/defaultMethods.hpp" |
1972 | 27 #include "classfile/systemDictionary.hpp" |
28 #include "classfile/vmSymbols.hpp" | |
29 #include "compiler/compileBroker.hpp" | |
30 #include "gc_interface/collectedHeap.inline.hpp" | |
31 #include "interpreter/bytecode.hpp" | |
32 #include "interpreter/interpreterRuntime.hpp" | |
33 #include "interpreter/linkResolver.hpp" | |
34 #include "memory/resourceArea.hpp" | |
35 #include "memory/universe.inline.hpp" | |
36 #include "oops/instanceKlass.hpp" | |
37 #include "oops/objArrayOop.hpp" | |
38 #include "prims/methodHandles.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/compilationPolicy.hpp" | |
41 #include "runtime/fieldDescriptor.hpp" | |
42 #include "runtime/frame.inline.hpp" | |
43 #include "runtime/handles.inline.hpp" | |
44 #include "runtime/reflection.hpp" | |
45 #include "runtime/signature.hpp" | |
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46 #include "runtime/thread.inline.hpp" |
1972 | 47 #include "runtime/vmThread.hpp" |
0 | 48 |
49 | |
50 //------------------------------------------------------------------------------------------------------------------------ | |
51 // Implementation of CallInfo | |
52 | |
53 | |
54 void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) { | |
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55 int vtable_index = Method::nonvirtual_vtable_index; |
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56 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
0 | 57 } |
58 | |
59 | |
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60 void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) { |
0 | 61 // This is only called for interface methods. If the resolved_method |
62 // comes from java/lang/Object, it can be the subject of a virtual call, so | |
63 // we should pick the vtable index from the resolved method. | |
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64 // In that case, the caller must call set_virtual instead of set_interface. |
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65 assert(resolved_method->method_holder()->is_interface(), ""); |
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66 assert(itable_index == resolved_method()->itable_index(), ""); |
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67 set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK); |
0 | 68 } |
69 | |
70 void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) { | |
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71 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index"); |
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72 assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), ""); |
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73 CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call); |
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74 set_common(resolved_klass, selected_klass, resolved_method, selected_method, kind, vtable_index, CHECK); |
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75 assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call"); |
0 | 76 } |
77 | |
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78 void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) { |
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79 if (resolved_method.is_null()) { |
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80 THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null"); |
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81 } |
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82 KlassHandle resolved_klass = SystemDictionary::MethodHandle_klass(); |
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83 assert(resolved_method->intrinsic_id() == vmIntrinsics::_invokeBasic || |
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84 resolved_method->is_compiled_lambda_form(), |
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85 "linkMethod must return one of these"); |
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86 int vtable_index = Method::nonvirtual_vtable_index; |
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87 assert(!resolved_method->has_vtable_index(), ""); |
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88 set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK); |
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89 _resolved_appendix = resolved_appendix; |
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90 _resolved_method_type = resolved_method_type; |
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91 } |
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92 |
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93 void CallInfo::set_common(KlassHandle resolved_klass, |
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94 KlassHandle selected_klass, |
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95 methodHandle resolved_method, |
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96 methodHandle selected_method, |
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97 CallKind kind, |
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98 int index, |
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99 TRAPS) { |
0 | 100 assert(resolved_method->signature() == selected_method->signature(), "signatures must correspond"); |
101 _resolved_klass = resolved_klass; | |
102 _selected_klass = selected_klass; | |
103 _resolved_method = resolved_method; | |
104 _selected_method = selected_method; | |
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105 _call_kind = kind; |
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106 _call_index = index; |
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107 _resolved_appendix = Handle(); |
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108 DEBUG_ONLY(verify()); // verify before making side effects |
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109 |
1783 | 110 if (CompilationPolicy::must_be_compiled(selected_method)) { |
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111 // This path is unusual, mostly used by the '-Xcomp' stress test mode. |
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112 |
1783 | 113 // Note: with several active threads, the must_be_compiled may be true |
114 // while can_be_compiled is false; remove assert | |
115 // assert(CompilationPolicy::can_be_compiled(selected_method), "cannot compile"); | |
0 | 116 if (THREAD->is_Compiler_thread()) { |
117 // don't force compilation, resolve was on behalf of compiler | |
118 return; | |
119 } | |
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120 if (selected_method->method_holder()->is_not_initialized()) { |
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121 // 'is_not_initialized' means not only '!is_initialized', but also that |
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122 // initialization has not been started yet ('!being_initialized') |
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123 // Do not force compilation of methods in uninitialized classes. |
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124 // Note that doing this would throw an assert later, |
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125 // in CompileBroker::compile_method. |
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126 // We sometimes use the link resolver to do reflective lookups |
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127 // even before classes are initialized. |
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128 return; |
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129 } |
0 | 130 CompileBroker::compile_method(selected_method, InvocationEntryBci, |
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131 CompilationPolicy::policy()->initial_compile_level(), |
1783 | 132 methodHandle(), 0, "must_be_compiled", CHECK); |
0 | 133 } |
134 } | |
135 | |
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136 // utility query for unreflecting a method |
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137 CallInfo::CallInfo(Method* resolved_method, Klass* resolved_klass) { |
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138 Klass* resolved_method_holder = resolved_method->method_holder(); |
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139 if (resolved_klass == NULL) { // 2nd argument defaults to holder of 1st |
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140 resolved_klass = resolved_method_holder; |
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141 } |
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142 _resolved_klass = resolved_klass; |
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143 _selected_klass = resolved_klass; |
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144 _resolved_method = resolved_method; |
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145 _selected_method = resolved_method; |
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146 // classify: |
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147 CallKind kind = CallInfo::unknown_kind; |
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148 int index = resolved_method->vtable_index(); |
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149 if (resolved_method->can_be_statically_bound()) { |
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150 kind = CallInfo::direct_call; |
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151 } else if (!resolved_method_holder->is_interface()) { |
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152 // Could be an Object method inherited into an interface, but still a vtable call. |
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153 kind = CallInfo::vtable_call; |
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154 } else if (!resolved_klass->is_interface()) { |
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155 // A default or miranda method. Compute the vtable index. |
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156 ResourceMark rm; |
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157 klassVtable* vt = InstanceKlass::cast(resolved_klass)->vtable(); |
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158 index = LinkResolver::vtable_index_of_interface_method(resolved_klass, |
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159 resolved_method); |
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160 assert(index >= 0 , "we should have valid vtable index at this point"); |
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161 |
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162 kind = CallInfo::vtable_call; |
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163 } else if (resolved_method->has_vtable_index()) { |
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164 // Can occur if an interface redeclares a method of Object. |
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165 |
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166 #ifdef ASSERT |
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167 // Ensure that this is really the case. |
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168 KlassHandle object_klass = SystemDictionary::Object_klass(); |
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169 Method * object_resolved_method = object_klass()->vtable()->method_at(index); |
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170 assert(object_resolved_method->name() == resolved_method->name(), |
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171 err_msg("Object and interface method names should match at vtable index %d, %s != %s", |
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172 index, object_resolved_method->name()->as_C_string(), resolved_method->name()->as_C_string())); |
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173 assert(object_resolved_method->signature() == resolved_method->signature(), |
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174 err_msg("Object and interface method signatures should match at vtable index %d, %s != %s", |
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175 index, object_resolved_method->signature()->as_C_string(), resolved_method->signature()->as_C_string())); |
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176 #endif // ASSERT |
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177 |
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178 kind = CallInfo::vtable_call; |
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179 } else { |
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180 // A regular interface call. |
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181 kind = CallInfo::itable_call; |
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182 index = resolved_method->itable_index(); |
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183 } |
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184 assert(index == Method::nonvirtual_vtable_index || index >= 0, err_msg("bad index %d", index)); |
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185 _call_kind = kind; |
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186 _call_index = index; |
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187 _resolved_appendix = Handle(); |
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188 DEBUG_ONLY(verify()); |
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189 } |
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190 |
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191 #ifdef ASSERT |
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192 void CallInfo::verify() { |
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193 switch (call_kind()) { // the meaning and allowed value of index depends on kind |
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194 case CallInfo::direct_call: |
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195 if (_call_index == Method::nonvirtual_vtable_index) break; |
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196 // else fall through to check vtable index: |
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197 case CallInfo::vtable_call: |
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198 assert(resolved_klass()->verify_vtable_index(_call_index), ""); |
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199 break; |
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200 case CallInfo::itable_call: |
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201 assert(resolved_method()->method_holder()->verify_itable_index(_call_index), ""); |
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202 break; |
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203 case CallInfo::unknown_kind: |
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204 assert(call_kind() != CallInfo::unknown_kind, "CallInfo must be set"); |
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205 break; |
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206 default: |
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207 fatal(err_msg_res("Unexpected call kind %d", call_kind())); |
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208 } |
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209 } |
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210 #endif //ASSERT |
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211 |
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212 |
0 | 213 |
214 //------------------------------------------------------------------------------------------------------------------------ | |
215 // Klass resolution | |
216 | |
217 void LinkResolver::check_klass_accessability(KlassHandle ref_klass, KlassHandle sel_klass, TRAPS) { | |
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218 if (!Reflection::verify_class_access(ref_klass(), |
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219 sel_klass(), |
0 | 220 true)) { |
221 ResourceMark rm(THREAD); | |
222 Exceptions::fthrow( | |
223 THREAD_AND_LOCATION, | |
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224 vmSymbols::java_lang_IllegalAccessError(), |
0 | 225 "tried to access class %s from class %s", |
226 sel_klass->external_name(), | |
227 ref_klass->external_name() | |
228 ); | |
229 return; | |
230 } | |
231 } | |
232 | |
233 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) { | |
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234 Klass* result_oop = pool->klass_ref_at(index, CHECK); |
0 | 235 result = KlassHandle(THREAD, result_oop); |
236 } | |
237 | |
238 //------------------------------------------------------------------------------------------------------------------------ | |
239 // Method resolution | |
240 // | |
241 // According to JVM spec. $5.4.3c & $5.4.3d | |
242 | |
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243 // Look up method in klasses, including static methods |
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244 // Then look up local default methods |
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245 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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246 Method* result_oop = klass->uncached_lookup_method(name, signature); |
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247 if (result_oop == NULL) { |
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248 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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249 if (default_methods != NULL) { |
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250 result_oop = InstanceKlass::find_method(default_methods, name, signature); |
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251 } |
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252 } |
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253 |
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254 if (EnableInvokeDynamic && result_oop != NULL) { |
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255 vmIntrinsics::ID iid = result_oop->intrinsic_id(); |
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256 if (MethodHandles::is_signature_polymorphic(iid)) { |
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257 // Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method. |
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258 return; |
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259 } |
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260 } |
0 | 261 result = methodHandle(THREAD, result_oop); |
262 } | |
263 | |
264 // returns first instance method | |
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265 // Looks up method in classes, then looks up local default methods |
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266 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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267 Method* result_oop = klass->uncached_lookup_method(name, signature); |
0 | 268 result = methodHandle(THREAD, result_oop); |
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269 while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) { |
6983 | 270 klass = KlassHandle(THREAD, result->method_holder()->super()); |
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271 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); |
0 | 272 } |
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273 |
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274 if (result.is_null()) { |
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275 Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); |
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276 if (default_methods != NULL) { |
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277 result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); |
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278 assert(result.is_null() || !result->is_static(), "static defaults not allowed"); |
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279 } |
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280 } |
0 | 281 } |
282 | |
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283 int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, |
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284 methodHandle resolved_method) { |
0 | 285 |
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286 int vtable_index = Method::invalid_vtable_index; |
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287 Symbol* name = resolved_method->name(); |
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288 Symbol* signature = resolved_method->signature(); |
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289 |
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290 // First check in default method array |
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291 if (!resolved_method->is_abstract() && |
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292 (InstanceKlass::cast(klass())->default_methods() != NULL)) { |
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293 int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); |
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294 if (index >= 0 ) { |
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295 vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); |
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296 } |
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297 } |
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298 if (vtable_index == Method::invalid_vtable_index) { |
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299 // get vtable_index for miranda methods |
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300 ResourceMark rm; |
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301 klassVtable *vt = InstanceKlass::cast(klass())->vtable(); |
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302 vtable_index = vt->index_of_miranda(name, signature); |
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303 } |
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304 return vtable_index; |
0 | 305 } |
306 | |
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307 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { |
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308 InstanceKlass *ik = InstanceKlass::cast(klass()); |
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309 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature)); |
0 | 310 } |
311 | |
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312 void LinkResolver::lookup_polymorphic_method(methodHandle& result, |
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313 KlassHandle klass, Symbol* name, Symbol* full_signature, |
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314 KlassHandle current_klass, |
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315 Handle *appendix_result_or_null, |
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316 Handle *method_type_result, |
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317 TRAPS) { |
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318 vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name); |
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319 if (TraceMethodHandles) { |
9082 | 320 ResourceMark rm(THREAD); |
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321 tty->print_cr("lookup_polymorphic_method iid=%s %s.%s%s", |
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322 vmIntrinsics::name_at(iid), klass->external_name(), |
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323 name->as_C_string(), full_signature->as_C_string()); |
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324 } |
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325 if (EnableInvokeDynamic && |
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326 klass() == SystemDictionary::MethodHandle_klass() && |
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327 iid != vmIntrinsics::_none) { |
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328 if (MethodHandles::is_signature_polymorphic_intrinsic(iid)) { |
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329 // Most of these do not need an up-call to Java to resolve, so can be done anywhere. |
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330 // Do not erase last argument type (MemberName) if it is a static linkTo method. |
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331 bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid); |
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332 TempNewSymbol basic_signature = |
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333 MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK); |
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334 if (TraceMethodHandles) { |
9082 | 335 ResourceMark rm(THREAD); |
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336 tty->print_cr("lookup_polymorphic_method %s %s => basic %s", |
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337 name->as_C_string(), |
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338 full_signature->as_C_string(), |
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339 basic_signature->as_C_string()); |
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340 } |
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341 result = SystemDictionary::find_method_handle_intrinsic(iid, |
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342 basic_signature, |
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343 CHECK); |
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344 if (result.not_null()) { |
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345 assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic"); |
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346 assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this"); |
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347 assert(basic_signature == result->signature(), "predict the result signature"); |
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348 if (TraceMethodHandles) { |
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349 tty->print("lookup_polymorphic_method => intrinsic "); |
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350 result->print_on(tty); |
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351 } |
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352 return; |
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353 } |
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354 } else if (iid == vmIntrinsics::_invokeGeneric |
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355 && !THREAD->is_Compiler_thread() |
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356 && appendix_result_or_null != NULL) { |
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357 // This is a method with type-checking semantics. |
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358 // We will ask Java code to spin an adapter method for it. |
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359 if (!MethodHandles::enabled()) { |
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360 // Make sure the Java part of the runtime has been booted up. |
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361 Klass* natives = SystemDictionary::MethodHandleNatives_klass(); |
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362 if (natives == NULL || InstanceKlass::cast(natives)->is_not_initialized()) { |
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363 SystemDictionary::resolve_or_fail(vmSymbols::java_lang_invoke_MethodHandleNatives(), |
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364 Handle(), |
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365 Handle(), |
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366 true, |
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367 CHECK); |
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368 } |
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369 } |
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370 |
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371 Handle appendix; |
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372 Handle method_type; |
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373 result = SystemDictionary::find_method_handle_invoker(name, |
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374 full_signature, |
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375 current_klass, |
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376 &appendix, |
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377 &method_type, |
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378 CHECK); |
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379 if (TraceMethodHandles) { |
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380 tty->print("lookup_polymorphic_method => (via Java) "); |
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381 result->print_on(tty); |
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382 tty->print(" lookup_polymorphic_method => appendix = "); |
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383 if (appendix.is_null()) tty->print_cr("(none)"); |
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384 else appendix->print_on(tty); |
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385 } |
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386 if (result.not_null()) { |
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387 #ifdef ASSERT |
9082 | 388 ResourceMark rm(THREAD); |
389 | |
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390 TempNewSymbol basic_signature = |
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391 MethodHandles::lookup_basic_type_signature(full_signature, CHECK); |
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392 int actual_size_of_params = result->size_of_parameters(); |
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393 int expected_size_of_params = ArgumentSizeComputer(basic_signature).size(); |
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394 // +1 for MethodHandle.this, +1 for trailing MethodType |
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395 if (!MethodHandles::is_signature_polymorphic_static(iid)) expected_size_of_params += 1; |
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396 if (appendix.not_null()) expected_size_of_params += 1; |
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397 if (actual_size_of_params != expected_size_of_params) { |
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398 tty->print_cr("*** basic_signature=%s", basic_signature->as_C_string()); |
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399 tty->print_cr("*** result for %s: ", vmIntrinsics::name_at(iid)); |
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400 result->print(); |
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401 } |
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402 assert(actual_size_of_params == expected_size_of_params, |
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403 err_msg("%d != %d", actual_size_of_params, expected_size_of_params)); |
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404 #endif //ASSERT |
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405 |
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406 assert(appendix_result_or_null != NULL, ""); |
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407 (*appendix_result_or_null) = appendix; |
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408 (*method_type_result) = method_type; |
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409 return; |
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410 } |
710 | 411 } |
412 } | |
413 } | |
414 | |
0 | 415 void LinkResolver::check_method_accessability(KlassHandle ref_klass, |
416 KlassHandle resolved_klass, | |
417 KlassHandle sel_klass, | |
418 methodHandle sel_method, | |
419 TRAPS) { | |
420 | |
421 AccessFlags flags = sel_method->access_flags(); | |
422 | |
12945 | 423 // Special case #1: arrays always override "clone". JVMS 2.15. |
0 | 424 // If the resolved klass is an array class, and the declaring class |
425 // is java.lang.Object and the method is "clone", set the flags | |
426 // to public. | |
12945 | 427 // Special case #2: If the resolved klass is an interface, and |
428 // the declaring class is java.lang.Object, and the method is | |
429 // "clone" or "finalize", set the flags to public. If the | |
430 // resolved interface does not contain "clone" or "finalize" | |
431 // methods, the method/interface method resolution looks to | |
432 // the interface's super class, java.lang.Object. With JDK 8 | |
433 // interface accessability check requirement, special casing | |
434 // this scenario is necessary to avoid an IAE. | |
0 | 435 // |
12945 | 436 // We'll check for each method name first and then java.lang.Object |
437 // to best short-circuit out of these tests. | |
438 if (((sel_method->name() == vmSymbols::clone_name() && | |
439 (resolved_klass->oop_is_array() || resolved_klass->is_interface())) || | |
440 (sel_method->name() == vmSymbols::finalize_method_name() && | |
441 resolved_klass->is_interface())) && | |
442 sel_klass() == SystemDictionary::Object_klass()) { | |
0 | 443 // We need to change "protected" to "public". |
12945 | 444 assert(flags.is_protected(), "clone or finalize not protected?"); |
0 | 445 jint new_flags = flags.as_int(); |
446 new_flags = new_flags & (~JVM_ACC_PROTECTED); | |
447 new_flags = new_flags | JVM_ACC_PUBLIC; | |
448 flags.set_flags(new_flags); | |
449 } | |
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450 // assert(extra_arg_result_or_null != NULL, "must be able to return extra argument"); |
0 | 451 |
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452 if (!Reflection::verify_field_access(ref_klass(), |
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453 resolved_klass(), |
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454 sel_klass(), |
0 | 455 flags, |
456 true)) { | |
457 ResourceMark rm(THREAD); | |
458 Exceptions::fthrow( | |
459 THREAD_AND_LOCATION, | |
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460 vmSymbols::java_lang_IllegalAccessError(), |
0 | 461 "tried to access method %s.%s%s from class %s", |
462 sel_klass->external_name(), | |
463 sel_method->name()->as_C_string(), | |
464 sel_method->signature()->as_C_string(), | |
465 ref_klass->external_name() | |
466 ); | |
467 return; | |
468 } | |
469 } | |
470 | |
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471 void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass, |
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472 Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) { |
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473 // This method is used only |
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474 // (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call), |
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475 // and |
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476 // (2) in Bytecode_invoke::static_target |
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477 // It appears to fail when applied to an invokeinterface call site. |
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478 // FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points. |
0 | 479 // resolve klass |
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480 if (code == Bytecodes::_invokedynamic) { |
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481 resolved_klass = SystemDictionary::MethodHandle_klass(); |
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482 Symbol* method_name = vmSymbols::invoke_name(); |
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483 Symbol* method_signature = pool->signature_ref_at(index); |
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484 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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485 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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486 return; |
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487 } |
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488 |
0 | 489 resolve_klass(resolved_klass, pool, index, CHECK); |
490 | |
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491 Symbol* method_name = pool->name_ref_at(index); |
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492 Symbol* method_signature = pool->signature_ref_at(index); |
0 | 493 KlassHandle current_klass(THREAD, pool->pool_holder()); |
494 | |
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495 if (pool->has_preresolution() |
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496 || (resolved_klass() == SystemDictionary::MethodHandle_klass() && |
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497 MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) { |
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498 Method* result_oop = ConstantPool::method_at_if_loaded(pool, index); |
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499 if (result_oop != NULL) { |
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500 resolved_method = methodHandle(THREAD, result_oop); |
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501 return; |
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502 } |
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503 } |
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504 |
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505 if (code == Bytecodes::_invokeinterface) { |
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506 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, CHECK); |
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507 } else if (code == Bytecodes::_invokevirtual) { |
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508 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
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509 } else { |
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510 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK); |
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511 } |
0 | 512 } |
513 | |
514 void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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515 Symbol* method_name, Symbol* method_signature, |
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516 KlassHandle current_klass, bool check_access, |
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517 bool require_methodref, TRAPS) { |
0 | 518 |
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519 Handle nested_exception; |
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520 |
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521 // 1. check if methodref required, that resolved_klass is not interfacemethodref |
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522 if (require_methodref && resolved_klass->is_interface()) { |
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523 ResourceMark rm(THREAD); |
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524 char buf[200]; |
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525 jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected", |
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526 resolved_klass()->external_name()); |
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527 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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528 } |
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529 |
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530 // 2. lookup method in resolved klass and its super klasses |
0 | 531 lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
532 | |
533 if (resolved_method.is_null()) { // not found in the class hierarchy | |
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534 // 3. lookup method in all the interfaces implemented by the resolved klass |
0 | 535 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); |
536 | |
537 if (resolved_method.is_null()) { | |
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538 // JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc |
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539 lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature, |
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540 current_klass, (Handle*)NULL, (Handle*)NULL, THREAD); |
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541 if (HAS_PENDING_EXCEPTION) { |
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542 nested_exception = Handle(THREAD, PENDING_EXCEPTION); |
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543 CLEAR_PENDING_EXCEPTION; |
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544 } |
710 | 545 } |
546 | |
547 if (resolved_method.is_null()) { | |
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548 // 4. method lookup failed |
0 | 549 ResourceMark rm(THREAD); |
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550 THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(), |
6983 | 551 Method::name_and_sig_as_C_string(resolved_klass(), |
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552 method_name, |
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553 method_signature), |
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554 nested_exception); |
0 | 555 } |
556 } | |
557 | |
558 // 5. check if method is concrete | |
559 if (resolved_method->is_abstract() && !resolved_klass->is_abstract()) { | |
560 ResourceMark rm(THREAD); | |
561 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 562 Method::name_and_sig_as_C_string(resolved_klass(), |
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563 method_name, |
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564 method_signature)); |
0 | 565 } |
566 | |
567 // 6. access checks, access checking may be turned off when calling from within the VM. | |
568 if (check_access) { | |
569 assert(current_klass.not_null() , "current_klass should not be null"); | |
570 | |
571 // check if method can be accessed by the referring class | |
572 check_method_accessability(current_klass, | |
573 resolved_klass, | |
574 KlassHandle(THREAD, resolved_method->method_holder()), | |
575 resolved_method, | |
576 CHECK); | |
577 | |
578 // check loader constraints | |
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579 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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580 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 581 { |
582 ResourceMark rm(THREAD); | |
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583 Symbol* failed_type_symbol = |
0 | 584 SystemDictionary::check_signature_loaders(method_signature, loader, |
585 class_loader, true, CHECK); | |
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586 if (failed_type_symbol != NULL) { |
0 | 587 const char* msg = "loader constraint violation: when resolving method" |
588 " \"%s\" the class loader (instance of %s) of the current class, %s," | |
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589 " and the class loader (instance of %s) for the method's defining class, %s, have" |
0 | 590 " different Class objects for the type %s used in the signature"; |
6983 | 591 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 592 const char* loader1 = SystemDictionary::loader_name(loader()); |
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593 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 594 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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595 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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596 ->name()->as_C_string(); |
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597 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 598 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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599 strlen(current) + strlen(loader2) + strlen(target) + |
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600 strlen(failed_type_name) + 1; |
0 | 601 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
602 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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603 target, failed_type_name); |
0 | 604 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
605 } | |
606 } | |
607 } | |
608 } | |
609 | |
610 void LinkResolver::resolve_interface_method(methodHandle& resolved_method, | |
611 KlassHandle resolved_klass, | |
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612 Symbol* method_name, |
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613 Symbol* method_signature, |
0 | 614 KlassHandle current_klass, |
615 bool check_access, TRAPS) { | |
616 | |
617 // check if klass is interface | |
618 if (!resolved_klass->is_interface()) { | |
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619 ResourceMark rm(THREAD); |
0 | 620 char buf[200]; |
6983 | 621 jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name()); |
0 | 622 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
623 } | |
624 | |
625 // lookup method in this interface or its super, java.lang.Object | |
626 lookup_instance_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
627 | |
628 if (resolved_method.is_null()) { | |
629 // lookup method in all the super-interfaces | |
630 lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK); | |
631 if (resolved_method.is_null()) { | |
632 // no method found | |
633 ResourceMark rm(THREAD); | |
634 THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(), | |
6983 | 635 Method::name_and_sig_as_C_string(resolved_klass(), |
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636 method_name, |
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637 method_signature)); |
0 | 638 } |
639 } | |
640 | |
641 if (check_access) { | |
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642 // JDK8 adds non-public interface methods, and accessability check requirement |
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643 assert(current_klass.not_null() , "current_klass should not be null"); |
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644 |
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645 // check if method can be accessed by the referring class |
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646 check_method_accessability(current_klass, |
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647 resolved_klass, |
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648 KlassHandle(THREAD, resolved_method->method_holder()), |
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649 resolved_method, |
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650 CHECK); |
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651 |
0 | 652 HandleMark hm(THREAD); |
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653 Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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654 Handle class_loader (THREAD, resolved_method->method_holder()->class_loader()); |
0 | 655 { |
656 ResourceMark rm(THREAD); | |
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657 Symbol* failed_type_symbol = |
0 | 658 SystemDictionary::check_signature_loaders(method_signature, loader, |
659 class_loader, true, CHECK); | |
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660 if (failed_type_symbol != NULL) { |
0 | 661 const char* msg = "loader constraint violation: when resolving " |
662 "interface method \"%s\" the class loader (instance of %s) of the " | |
663 "current class, %s, and the class loader (instance of %s) for " | |
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664 "the method's defining class, %s, have different Class objects for the type %s " |
0 | 665 "used in the signature"; |
6983 | 666 char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature); |
0 | 667 const char* loader1 = SystemDictionary::loader_name(loader()); |
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668 char* current = InstanceKlass::cast(current_klass())->name()->as_C_string(); |
0 | 669 const char* loader2 = SystemDictionary::loader_name(class_loader()); |
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670 char* target = InstanceKlass::cast(resolved_method->method_holder()) |
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671 ->name()->as_C_string(); |
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672 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 673 size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + |
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674 strlen(current) + strlen(loader2) + strlen(target) + |
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675 strlen(failed_type_name) + 1; |
0 | 676 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
677 jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2, | |
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678 target, failed_type_name); |
0 | 679 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
680 } | |
681 } | |
682 } | |
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683 |
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684 if (TraceItables && Verbose) { |
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685 ResourceMark rm(THREAD); |
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686 tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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687 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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688 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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689 Method::name_and_sig_as_C_string(resolved_klass(), |
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690 resolved_method->name(), |
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691 resolved_method->signature()), |
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692 resolved_method->method_holder()->internal_name() |
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693 ); |
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694 resolved_method->access_flags().print_on(tty); |
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695 if (resolved_method->is_default_method()) { |
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696 tty->print("default "); |
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697 } |
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698 if (resolved_method->is_overpass()) { |
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699 tty->print("overpass"); |
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700 } |
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701 tty->cr(); |
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702 } |
0 | 703 } |
704 | |
705 //------------------------------------------------------------------------------------------------------------------------ | |
706 // Field resolution | |
707 | |
708 void LinkResolver::check_field_accessability(KlassHandle ref_klass, | |
709 KlassHandle resolved_klass, | |
710 KlassHandle sel_klass, | |
711 fieldDescriptor& fd, | |
712 TRAPS) { | |
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713 if (!Reflection::verify_field_access(ref_klass(), |
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714 resolved_klass(), |
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715 sel_klass(), |
0 | 716 fd.access_flags(), |
717 true)) { | |
718 ResourceMark rm(THREAD); | |
719 Exceptions::fthrow( | |
720 THREAD_AND_LOCATION, | |
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721 vmSymbols::java_lang_IllegalAccessError(), |
0 | 722 "tried to access field %s.%s from class %s", |
723 sel_klass->external_name(), | |
724 fd.name()->as_C_string(), | |
725 ref_klass->external_name() | |
726 ); | |
727 return; | |
728 } | |
729 } | |
730 | |
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731 void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { |
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732 // Load these early in case the resolve of the containing klass fails |
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733 Symbol* field = pool->name_ref_at(index); |
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734 Symbol* sig = pool->signature_ref_at(index); |
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735 |
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736 // resolve specified klass |
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737 KlassHandle resolved_klass; |
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738 resolve_klass(resolved_klass, pool, index, CHECK); |
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739 |
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740 KlassHandle current_klass(THREAD, pool->pool_holder()); |
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741 resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK); |
0 | 742 } |
743 | |
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744 void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig, |
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745 KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class, |
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746 TRAPS) { |
0 | 747 assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic || |
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748 byte == Bytecodes::_getfield || byte == Bytecodes::_putfield || |
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749 (byte == Bytecodes::_nop && !check_access), "bad field access bytecode"); |
0 | 750 |
751 bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic); | |
752 bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic); | |
753 | |
754 // Check if there's a resolved klass containing the field | |
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755 if (resolved_klass.is_null()) { |
0 | 756 ResourceMark rm(THREAD); |
757 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
758 } | |
759 | |
760 // Resolve instance field | |
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761 KlassHandle sel_klass(THREAD, InstanceKlass::cast(resolved_klass())->find_field(field, sig, &fd)); |
0 | 762 // check if field exists; i.e., if a klass containing the field def has been selected |
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763 if (sel_klass.is_null()) { |
0 | 764 ResourceMark rm(THREAD); |
765 THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string()); | |
766 } | |
767 | |
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768 if (!check_access) |
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769 // Access checking may be turned off when calling from within the VM. |
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770 return; |
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771 |
0 | 772 // check access |
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773 check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK); |
0 | 774 |
775 // check for errors | |
776 if (is_static != fd.is_static()) { | |
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777 ResourceMark rm(THREAD); |
0 | 778 char msg[200]; |
6983 | 779 jio_snprintf(msg, sizeof(msg), "Expected %s field %s.%s", is_static ? "static" : "non-static", resolved_klass()->external_name(), fd.name()->as_C_string()); |
0 | 780 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), msg); |
781 } | |
782 | |
783 // Final fields can only be accessed from its own class. | |
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784 if (is_put && fd.access_flags().is_final() && sel_klass() != current_klass()) { |
0 | 785 THROW(vmSymbols::java_lang_IllegalAccessError()); |
786 } | |
787 | |
788 // initialize resolved_klass if necessary | |
789 // note 1: the klass which declared the field must be initialized (i.e, sel_klass) | |
790 // according to the newest JVM spec (5.5, p.170) - was bug (gri 7/28/99) | |
791 // | |
792 // note 2: we don't want to force initialization if we are just checking | |
793 // if the field access is legal; e.g., during compilation | |
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794 if (is_static && initialize_class) { |
0 | 795 sel_klass->initialize(CHECK); |
796 } | |
797 | |
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798 if (sel_klass() != current_klass()) { |
0 | 799 HandleMark hm(THREAD); |
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800 Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader()); |
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801 Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader()); |
0 | 802 { |
803 ResourceMark rm(THREAD); | |
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804 Symbol* failed_type_symbol = |
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805 SystemDictionary::check_signature_loaders(sig, |
0 | 806 ref_loader, sel_loader, |
807 false, | |
808 CHECK); | |
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809 if (failed_type_symbol != NULL) { |
0 | 810 const char* msg = "loader constraint violation: when resolving field" |
811 " \"%s\" the class loader (instance of %s) of the referring class, " | |
812 "%s, and the class loader (instance of %s) for the field's resolved " | |
813 "type, %s, have different Class objects for that type"; | |
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814 char* field_name = field->as_C_string(); |
0 | 815 const char* loader1 = SystemDictionary::loader_name(ref_loader()); |
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816 char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string(); |
0 | 817 const char* loader2 = SystemDictionary::loader_name(sel_loader()); |
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818 char* failed_type_name = failed_type_symbol->as_C_string(); |
0 | 819 size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) + |
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820 strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1; |
0 | 821 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
822 jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2, | |
823 failed_type_name); | |
824 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); | |
825 } | |
826 } | |
827 } | |
828 | |
829 // return information. note that the klass is set to the actual klass containing the | |
830 // field, otherwise access of static fields in superclasses will not work. | |
831 } | |
832 | |
833 | |
834 //------------------------------------------------------------------------------------------------------------------------ | |
835 // Invoke resolution | |
836 // | |
837 // Naming conventions: | |
838 // | |
839 // resolved_method the specified method (i.e., static receiver specified via constant pool index) | |
840 // sel_method the selected method (selected via run-time lookup; e.g., based on dynamic receiver class) | |
841 // resolved_klass the specified klass (i.e., specified via constant pool index) | |
842 // recv_klass the receiver klass | |
843 | |
844 | |
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845 void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name, |
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846 Symbol* method_signature, KlassHandle current_klass, |
0 | 847 bool check_access, bool initialize_class, TRAPS) { |
848 methodHandle resolved_method; | |
849 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
6983 | 850 resolved_klass = KlassHandle(THREAD, resolved_method->method_holder()); |
0 | 851 |
852 // Initialize klass (this should only happen if everything is ok) | |
853 if (initialize_class && resolved_klass->should_be_initialized()) { | |
854 resolved_klass->initialize(CHECK); | |
855 linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
856 } | |
857 | |
858 // setup result | |
859 result.set_static(resolved_klass, resolved_method, CHECK); | |
860 } | |
861 | |
862 // throws linktime exceptions | |
863 void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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864 Symbol* method_name, Symbol* method_signature, |
0 | 865 KlassHandle current_klass, bool check_access, TRAPS) { |
866 | |
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867 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
0 | 868 assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier"); |
869 | |
870 // check if static | |
871 if (!resolved_method->is_static()) { | |
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872 ResourceMark rm(THREAD); |
0 | 873 char buf[200]; |
6983 | 874 jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 875 resolved_method->name(), |
876 resolved_method->signature())); | |
877 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
878 } | |
879 } | |
880 | |
881 | |
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882 void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name, |
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883 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 884 methodHandle resolved_method; |
885 linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
886 runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK); | |
887 } | |
888 | |
889 // throws linktime exceptions | |
890 void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass, | |
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891 Symbol* method_name, Symbol* method_signature, |
0 | 892 KlassHandle current_klass, bool check_access, TRAPS) { |
893 | |
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894 // Invokespecial is called for multiple special reasons: |
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895 // <init> |
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896 // local private method invocation, for classes and interfaces |
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897 // superclass.method, which can also resolve to a default method |
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898 // and the selected method is recalculated relative to the direct superclass |
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899 // superinterface.method, which explicitly does not check shadowing |
6934 | 900 |
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901 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK); |
0 | 902 |
903 // check if method name is <init>, that it is found in same klass as static type | |
904 if (resolved_method->name() == vmSymbols::object_initializer_name() && | |
905 resolved_method->method_holder() != resolved_klass()) { | |
906 ResourceMark rm(THREAD); | |
907 Exceptions::fthrow( | |
908 THREAD_AND_LOCATION, | |
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909 vmSymbols::java_lang_NoSuchMethodError(), |
0 | 910 "%s: method %s%s not found", |
911 resolved_klass->external_name(), | |
912 resolved_method->name()->as_C_string(), | |
913 resolved_method->signature()->as_C_string() | |
914 ); | |
915 return; | |
916 } | |
917 | |
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918 // check if invokespecial's interface method reference is in an indirect superinterface |
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919 if (!current_klass.is_null() && resolved_klass->is_interface()) { |
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920 Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ? |
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921 current_klass() : |
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922 InstanceKlass::cast(current_klass())->host_klass(); |
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923 |
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924 if (!InstanceKlass::cast(klass_to_check)->is_same_or_direct_interface(resolved_klass())) { |
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925 ResourceMark rm(THREAD); |
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926 char buf[200]; |
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927 jio_snprintf(buf, sizeof(buf), |
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928 "Interface method reference: %s, is in an indirect superinterface of %s", |
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929 Method::name_and_sig_as_C_string(resolved_klass(), |
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930 resolved_method->name(), |
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931 resolved_method->signature()), |
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932 current_klass->external_name()); |
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933 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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934 } |
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935 } |
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|
936 |
0 | 937 // check if not static |
938 if (resolved_method->is_static()) { | |
3324
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939 ResourceMark rm(THREAD); |
0 | 940 char buf[200]; |
941 jio_snprintf(buf, sizeof(buf), | |
942 "Expecting non-static method %s", | |
6983 | 943 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 944 resolved_method->name(), |
945 resolved_method->signature())); | |
946 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
947 } | |
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948 |
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949 if (TraceItables && Verbose) { |
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950 ResourceMark rm(THREAD); |
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951 tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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952 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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953 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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954 Method::name_and_sig_as_C_string(resolved_klass(), |
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955 resolved_method->name(), |
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956 resolved_method->signature()), |
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957 resolved_method->method_holder()->internal_name() |
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958 ); |
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959 resolved_method->access_flags().print_on(tty); |
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960 if (resolved_method->is_default_method()) { |
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961 tty->print("default "); |
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962 } |
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963 if (resolved_method->is_overpass()) { |
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964 tty->print("overpass"); |
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965 } |
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966 tty->cr(); |
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967 } |
0 | 968 } |
969 | |
970 // throws runtime exceptions | |
971 void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
972 KlassHandle current_klass, bool check_access, TRAPS) { | |
973 | |
974 // resolved method is selected method unless we have an old-style lookup | |
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975 // for a superclass method |
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976 // Invokespecial for a superinterface, resolved method is selected method, |
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977 // no checks for shadowing |
0 | 978 methodHandle sel_method(THREAD, resolved_method()); |
979 | |
980 // check if this is an old-style super call and do a new lookup if so | |
981 { KlassHandle method_klass = KlassHandle(THREAD, | |
982 resolved_method->method_holder()); | |
983 | |
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984 if (check_access && |
0 | 985 // a) check if ACC_SUPER flag is set for the current class |
8702 | 986 (current_klass->is_super() || !AllowNonVirtualCalls) && |
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987 // b) check if the class of the resolved_klass is a superclass |
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988 // (not supertype in order to exclude interface classes) of the current class. |
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989 // This check is not performed for super.invoke for interface methods |
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990 // in super interfaces. |
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991 current_klass->is_subclass_of(resolved_klass()) && |
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992 current_klass() != resolved_klass() && |
0 | 993 // c) check if the method is not <init> |
994 resolved_method->name() != vmSymbols::object_initializer_name()) { | |
995 // Lookup super method | |
996 KlassHandle super_klass(THREAD, current_klass->super()); | |
997 lookup_instance_method_in_klasses(sel_method, super_klass, | |
2177
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998 resolved_method->name(), |
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|
999 resolved_method->signature(), CHECK); |
0 | 1000 // check if found |
1001 if (sel_method.is_null()) { | |
1002 ResourceMark rm(THREAD); | |
1003 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1004 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1005 resolved_method->name(), |
1006 resolved_method->signature())); | |
1007 } | |
1008 } | |
1009 } | |
1010 | |
1011 // check if not static | |
1012 if (sel_method->is_static()) { | |
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1013 ResourceMark rm(THREAD); |
0 | 1014 char buf[200]; |
6983 | 1015 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1016 resolved_method->name(), |
1017 resolved_method->signature())); | |
1018 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1019 } | |
1020 | |
1021 // check if abstract | |
1022 if (sel_method->is_abstract()) { | |
1023 ResourceMark rm(THREAD); | |
1024 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1025 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1026 sel_method->name(), |
1027 sel_method->signature())); | |
1028 } | |
1029 | |
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1030 if (TraceItables && Verbose) { |
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1031 ResourceMark rm(THREAD); |
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1032 tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1033 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1034 Method::name_and_sig_as_C_string(resolved_klass(), |
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1035 sel_method->name(), |
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1036 sel_method->signature()), |
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1037 sel_method->method_holder()->internal_name() |
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1038 ); |
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1039 sel_method->access_flags().print_on(tty); |
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1040 if (sel_method->is_default_method()) { |
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1041 tty->print("default "); |
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1042 } |
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1043 if (sel_method->is_overpass()) { |
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1044 tty->print("overpass"); |
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1045 } |
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|
1046 tty->cr(); |
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1047 } |
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1048 |
0 | 1049 // setup result |
1050 result.set_static(resolved_klass, sel_method, CHECK); | |
1051 } | |
1052 | |
1053 void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass, | |
2177
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1054 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1055 bool check_access, bool check_null_and_abstract, TRAPS) { |
1056 methodHandle resolved_method; | |
1057 linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1058 runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK); | |
1059 } | |
1060 | |
1061 // throws linktime exceptions | |
1062 void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass, | |
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1063 Symbol* method_name, Symbol* method_signature, |
0 | 1064 KlassHandle current_klass, bool check_access, TRAPS) { |
1065 // normal method resolution | |
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1066 resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK); |
0 | 1067 |
1068 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1069 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1070 | |
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1071 // check if private interface method |
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1072 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
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1073 ResourceMark rm(THREAD); |
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1074 char buf[200]; |
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1075 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokevirtual: method %s, caller-class:%s", |
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1076 Method::name_and_sig_as_C_string(resolved_klass(), |
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1077 resolved_method->name(), |
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1078 resolved_method->signature()), |
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1079 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name())); |
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1080 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
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1081 } |
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1082 |
0 | 1083 // check if not static |
1084 if (resolved_method->is_static()) { | |
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1085 ResourceMark rm(THREAD); |
0 | 1086 char buf[200]; |
6983 | 1087 jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1088 resolved_method->name(), |
1089 resolved_method->signature())); | |
1090 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); | |
1091 } | |
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1092 |
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1093 if (PrintVtables && Verbose) { |
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1094 ResourceMark rm(THREAD); |
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1095 tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", |
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1096 (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), |
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1097 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1098 Method::name_and_sig_as_C_string(resolved_klass(), |
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1099 resolved_method->name(), |
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1100 resolved_method->signature()), |
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1101 resolved_method->method_holder()->internal_name() |
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1102 ); |
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1103 resolved_method->access_flags().print_on(tty); |
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1104 if (resolved_method->is_default_method()) { |
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1105 tty->print("default "); |
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1106 } |
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1107 if (resolved_method->is_overpass()) { |
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1108 tty->print("overpass"); |
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1109 } |
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1110 tty->cr(); |
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1111 } |
0 | 1112 } |
1113 | |
1114 // throws runtime exceptions | |
1115 void LinkResolver::runtime_resolve_virtual_method(CallInfo& result, | |
1116 methodHandle resolved_method, | |
1117 KlassHandle resolved_klass, | |
1118 Handle recv, | |
1119 KlassHandle recv_klass, | |
1120 bool check_null_and_abstract, | |
1121 TRAPS) { | |
1122 | |
1123 // setup default return values | |
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1124 int vtable_index = Method::invalid_vtable_index; |
0 | 1125 methodHandle selected_method; |
1126 | |
1127 assert(recv.is_null() || recv->is_oop(), "receiver is not an oop"); | |
1128 | |
1129 // runtime method resolution | |
1130 if (check_null_and_abstract && recv.is_null()) { // check if receiver exists | |
1131 THROW(vmSymbols::java_lang_NullPointerException()); | |
1132 } | |
1133 | |
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1134 // Virtual methods cannot be resolved before its klass has been linked, for otherwise the Method*'s |
0 | 1135 // has not been rewritten, and the vtable initialized. Make sure to do this after the nullcheck, since |
1136 // a missing receiver might result in a bogus lookup. | |
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6934
diff
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|
1137 assert(resolved_method->method_holder()->is_linked(), "must be linked"); |
0 | 1138 |
1139 // do lookup based on receiver klass using the vtable index | |
6725
da91efe96a93
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1140 if (resolved_method->method_holder()->is_interface()) { // miranda method |
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1141 vtable_index = vtable_index_of_interface_method(resolved_klass, |
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|
1142 resolved_method); |
0 | 1143 assert(vtable_index >= 0 , "we should have valid vtable index at this point"); |
1144 | |
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1145 InstanceKlass* inst = InstanceKlass::cast(recv_klass()); |
0 | 1146 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1147 } else { | |
1148 // at this point we are sure that resolved_method is virtual and not | |
1149 // a miranda method; therefore, it must have a valid vtable index. | |
12264
b2e698d2276c
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|
1150 assert(!resolved_method->has_itable_index(), ""); |
0 | 1151 vtable_index = resolved_method->vtable_index(); |
1152 // We could get a negative vtable_index for final methods, | |
1153 // because as an optimization they are they are never put in the vtable, | |
1154 // unless they override an existing method. | |
1155 // If we do get a negative, it means the resolved method is the the selected | |
1156 // method, and it can never be changed by an override. | |
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|
1157 if (vtable_index == Method::nonvirtual_vtable_index) { |
0 | 1158 assert(resolved_method->can_be_statically_bound(), "cannot override this method"); |
1159 selected_method = resolved_method; | |
1160 } else { | |
1161 // recv_klass might be an arrayKlassOop but all vtables start at | |
1162 // the same place. The cast is to avoid virtual call and assertion. | |
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1163 InstanceKlass* inst = (InstanceKlass*)recv_klass(); |
0 | 1164 selected_method = methodHandle(THREAD, inst->method_at_vtable(vtable_index)); |
1165 } | |
1166 } | |
1167 | |
1168 // check if method exists | |
1169 if (selected_method.is_null()) { | |
1170 ResourceMark rm(THREAD); | |
1171 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1172 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1173 resolved_method->name(), |
1174 resolved_method->signature())); | |
1175 } | |
1176 | |
1177 // check if abstract | |
1178 if (check_null_and_abstract && selected_method->is_abstract()) { | |
1179 ResourceMark rm(THREAD); | |
1180 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1181 Method::name_and_sig_as_C_string(resolved_klass(), |
0 | 1182 selected_method->name(), |
1183 selected_method->signature())); | |
1184 } | |
1185 | |
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1186 if (PrintVtables && Verbose) { |
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|
1187 ResourceMark rm(THREAD); |
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|
1188 tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ", |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1189 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1190 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
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1191 Method::name_and_sig_as_C_string(resolved_klass(), |
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|
1192 resolved_method->name(), |
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|
1193 resolved_method->signature()), |
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|
1194 selected_method->method_holder()->internal_name(), |
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|
1195 vtable_index |
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|
1196 ); |
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|
1197 selected_method->access_flags().print_on(tty); |
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|
1198 if (selected_method->is_default_method()) { |
13055
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1199 tty->print("default "); |
12318
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|
1200 } |
12823
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|
1201 if (selected_method->is_overpass()) { |
12318
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1202 tty->print("overpass"); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1203 } |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1204 tty->cr(); |
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|
1205 } |
0 | 1206 // setup result |
1207 result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK); | |
1208 } | |
1209 | |
1210 void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
1211 Symbol* method_name, Symbol* method_signature, KlassHandle current_klass, |
0 | 1212 bool check_access, bool check_null_and_abstract, TRAPS) { |
1213 methodHandle resolved_method; | |
1214 linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1215 runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK); | |
1216 } | |
1217 | |
1218 // throws linktime exceptions | |
2177
3582bf76420e
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|
1219 void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name, |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
1220 Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) { |
0 | 1221 // normal interface method resolution |
1222 resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK); | |
1223 | |
1224 assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier"); | |
1225 assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier"); | |
1226 } | |
1227 | |
1228 // throws runtime exceptions | |
1229 void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass, | |
1230 Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) { | |
1231 // check if receiver exists | |
1232 if (check_null_and_abstract && recv.is_null()) { | |
1233 THROW(vmSymbols::java_lang_NullPointerException()); | |
1234 } | |
1235 | |
12318
36b97be47bde
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|
1236 // check if private interface method |
36b97be47bde
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|
1237 if (resolved_klass->is_interface() && resolved_method->is_private()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1238 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1239 char buf[200]; |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1240 jio_snprintf(buf, sizeof(buf), "private interface method requires invokespecial, not invokeinterface: method %s", |
36b97be47bde
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diff
changeset
|
1241 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1242 resolved_method->name(), |
36b97be47bde
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|
1243 resolved_method->signature())); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1244 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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|
1245 } |
36b97be47bde
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|
1246 |
0 | 1247 // check if receiver klass implements the resolved interface |
1248 if (!recv_klass->is_subtype_of(resolved_klass())) { | |
3324
acf5e660c71a
6728025: LinkResolver is missing some ResourceMarks
jcoomes
parents:
2460
diff
changeset
|
1249 ResourceMark rm(THREAD); |
0 | 1250 char buf[200]; |
1251 jio_snprintf(buf, sizeof(buf), "Class %s does not implement the requested interface %s", | |
6983 | 1252 recv_klass()->external_name(), |
1253 resolved_klass()->external_name()); | |
0 | 1254 THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); |
1255 } | |
1256 // do lookup based on receiver klass | |
1257 methodHandle sel_method; | |
1258 lookup_instance_method_in_klasses(sel_method, recv_klass, | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
1259 resolved_method->name(), |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
1260 resolved_method->signature(), CHECK); |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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10128
diff
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|
1261 if (sel_method.is_null() && !check_null_and_abstract) { |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
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|
1262 // In theory this is a harmless placeholder value, but |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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10128
diff
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|
1263 // in practice leaving in null affects the nsk default method tests. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
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|
1264 // This needs further study. |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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10128
diff
changeset
|
1265 sel_method = resolved_method; |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
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diff
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|
1266 } |
0 | 1267 // check if method exists |
1268 if (sel_method.is_null()) { | |
1269 ResourceMark rm(THREAD); | |
1270 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1271 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1272 resolved_method->name(), |
1273 resolved_method->signature())); | |
1274 } | |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
9082
diff
changeset
|
1275 // check access |
12318
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|
1276 // Throw Illegal Access Error if sel_method is not public. |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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|
1277 if (!sel_method->is_public()) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1278 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
acorn
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diff
changeset
|
1279 THROW_MSG(vmSymbols::java_lang_IllegalAccessError(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1280 Method::name_and_sig_as_C_string(recv_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1281 sel_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1282 sel_method->signature())); |
10128
41ed397cc0cd
8006267: InterfaceMethod_ref should allow invokestatic and invokespecial
bharadwaj
parents:
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diff
changeset
|
1283 } |
0 | 1284 // check if abstract |
1285 if (check_null_and_abstract && sel_method->is_abstract()) { | |
1286 ResourceMark rm(THREAD); | |
1287 THROW_MSG(vmSymbols::java_lang_AbstractMethodError(), | |
6983 | 1288 Method::name_and_sig_as_C_string(recv_klass(), |
0 | 1289 sel_method->name(), |
1290 sel_method->signature())); | |
1291 } | |
12318
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|
1292 |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1293 if (TraceItables && Verbose) { |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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diff
changeset
|
1294 ResourceMark rm(THREAD); |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1295 tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ", |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1296 (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1297 (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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changeset
|
1298 Method::name_and_sig_as_C_string(resolved_klass(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1299 resolved_method->name(), |
36b97be47bde
8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1300 resolved_method->signature()), |
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|
1301 sel_method->method_holder()->internal_name() |
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|
1302 ); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1303 sel_method->access_flags().print_on(tty); |
12823
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|
1304 if (sel_method->is_default_method()) { |
13055
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8027229: ICCE expected for >=2 maximally specific default methods.
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|
1305 tty->print("default "); |
12318
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|
1306 } |
12823
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|
1307 if (sel_method->is_overpass()) { |
12318
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1308 tty->print("overpass"); |
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|
1309 } |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1310 tty->cr(); |
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8011311: Private interface methods. Default conflicts:ICCE. no erased_super_default.
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|
1311 } |
13055
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|
1312 // setup result |
fce21ac5968d
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|
1313 if (!resolved_method->has_itable_index()) { |
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|
1314 int vtable_index = resolved_method->vtable_index(); |
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|
1315 assert(vtable_index == sel_method->vtable_index(), "sanity check"); |
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|
1316 result.set_virtual(resolved_klass, recv_klass, resolved_method, sel_method, vtable_index, CHECK); |
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|
1317 } else { |
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|
1318 int itable_index = resolved_method()->itable_index(); |
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|
1319 result.set_interface(resolved_klass, recv_klass, resolved_method, sel_method, itable_index, CHECK); |
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|
1320 } |
0 | 1321 } |
1322 | |
1323 | |
1324 methodHandle LinkResolver::linktime_resolve_interface_method_or_null( | |
1325 KlassHandle resolved_klass, | |
2177
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|
1326 Symbol* method_name, |
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diff
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|
1327 Symbol* method_signature, |
0 | 1328 KlassHandle current_klass, |
1329 bool check_access) { | |
1330 EXCEPTION_MARK; | |
1331 methodHandle method_result; | |
1332 linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1333 if (HAS_PENDING_EXCEPTION) { | |
1334 CLEAR_PENDING_EXCEPTION; | |
1335 return methodHandle(); | |
1336 } else { | |
1337 return method_result; | |
1338 } | |
1339 } | |
1340 | |
1341 methodHandle LinkResolver::linktime_resolve_virtual_method_or_null( | |
1342 KlassHandle resolved_klass, | |
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1343 Symbol* method_name, |
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1344 Symbol* method_signature, |
0 | 1345 KlassHandle current_klass, |
1346 bool check_access) { | |
1347 EXCEPTION_MARK; | |
1348 methodHandle method_result; | |
1349 linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD); | |
1350 if (HAS_PENDING_EXCEPTION) { | |
1351 CLEAR_PENDING_EXCEPTION; | |
1352 return methodHandle(); | |
1353 } else { | |
1354 return method_result; | |
1355 } | |
1356 } | |
1357 | |
1358 methodHandle LinkResolver::resolve_virtual_call_or_null( | |
1359 KlassHandle receiver_klass, | |
1360 KlassHandle resolved_klass, | |
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1361 Symbol* name, |
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1362 Symbol* signature, |
0 | 1363 KlassHandle current_klass) { |
1364 EXCEPTION_MARK; | |
1365 CallInfo info; | |
1366 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1367 if (HAS_PENDING_EXCEPTION) { | |
1368 CLEAR_PENDING_EXCEPTION; | |
1369 return methodHandle(); | |
1370 } | |
1371 return info.selected_method(); | |
1372 } | |
1373 | |
1374 methodHandle LinkResolver::resolve_interface_call_or_null( | |
1375 KlassHandle receiver_klass, | |
1376 KlassHandle resolved_klass, | |
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1377 Symbol* name, |
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1378 Symbol* signature, |
0 | 1379 KlassHandle current_klass) { |
1380 EXCEPTION_MARK; | |
1381 CallInfo info; | |
1382 resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1383 if (HAS_PENDING_EXCEPTION) { | |
1384 CLEAR_PENDING_EXCEPTION; | |
1385 return methodHandle(); | |
1386 } | |
1387 return info.selected_method(); | |
1388 } | |
1389 | |
1390 int LinkResolver::resolve_virtual_vtable_index( | |
1391 KlassHandle receiver_klass, | |
1392 KlassHandle resolved_klass, | |
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1393 Symbol* name, |
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1394 Symbol* signature, |
0 | 1395 KlassHandle current_klass) { |
1396 EXCEPTION_MARK; | |
1397 CallInfo info; | |
1398 resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1399 if (HAS_PENDING_EXCEPTION) { | |
1400 CLEAR_PENDING_EXCEPTION; | |
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1401 return Method::invalid_vtable_index; |
0 | 1402 } |
1403 return info.vtable_index(); | |
1404 } | |
1405 | |
1406 methodHandle LinkResolver::resolve_static_call_or_null( | |
1407 KlassHandle resolved_klass, | |
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1408 Symbol* name, |
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1409 Symbol* signature, |
0 | 1410 KlassHandle current_klass) { |
1411 EXCEPTION_MARK; | |
1412 CallInfo info; | |
1413 resolve_static_call(info, resolved_klass, name, signature, current_klass, true, false, THREAD); | |
1414 if (HAS_PENDING_EXCEPTION) { | |
1415 CLEAR_PENDING_EXCEPTION; | |
1416 return methodHandle(); | |
1417 } | |
1418 return info.selected_method(); | |
1419 } | |
1420 | |
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1421 methodHandle LinkResolver::resolve_special_call_or_null(KlassHandle resolved_klass, Symbol* name, Symbol* signature, |
0 | 1422 KlassHandle current_klass) { |
1423 EXCEPTION_MARK; | |
1424 CallInfo info; | |
1425 resolve_special_call(info, resolved_klass, name, signature, current_klass, true, THREAD); | |
1426 if (HAS_PENDING_EXCEPTION) { | |
1427 CLEAR_PENDING_EXCEPTION; | |
1428 return methodHandle(); | |
1429 } | |
1430 return info.selected_method(); | |
1431 } | |
1432 | |
1433 | |
1434 | |
1435 //------------------------------------------------------------------------------------------------------------------------ | |
1436 // ConstantPool entries | |
1437 | |
1438 void LinkResolver::resolve_invoke(CallInfo& result, Handle recv, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) { | |
1439 switch (byte) { | |
1440 case Bytecodes::_invokestatic : resolve_invokestatic (result, pool, index, CHECK); break; | |
1441 case Bytecodes::_invokespecial : resolve_invokespecial (result, pool, index, CHECK); break; | |
1442 case Bytecodes::_invokevirtual : resolve_invokevirtual (result, recv, pool, index, CHECK); break; | |
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1443 case Bytecodes::_invokehandle : resolve_invokehandle (result, pool, index, CHECK); break; |
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1444 case Bytecodes::_invokedynamic : resolve_invokedynamic (result, pool, index, CHECK); break; |
0 | 1445 case Bytecodes::_invokeinterface: resolve_invokeinterface(result, recv, pool, index, CHECK); break; |
1446 } | |
1447 return; | |
1448 } | |
1449 | |
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1450 void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, |
0 | 1451 KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) { |
1452 // resolve klass | |
1453 resolve_klass(resolved_klass, pool, index, CHECK); | |
1454 | |
1455 // Get name, signature, and static klass | |
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1456 method_name = pool->name_ref_at(index); |
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1457 method_signature = pool->signature_ref_at(index); |
0 | 1458 current_klass = KlassHandle(THREAD, pool->pool_holder()); |
1459 } | |
1460 | |
1461 | |
1462 void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1463 KlassHandle resolved_klass; | |
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1464 Symbol* method_name = NULL; |
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1465 Symbol* method_signature = NULL; |
0 | 1466 KlassHandle current_klass; |
1467 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1468 resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); | |
1469 } | |
1470 | |
1471 | |
1472 void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { | |
1473 KlassHandle resolved_klass; | |
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1474 Symbol* method_name = NULL; |
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1475 Symbol* method_signature = NULL; |
0 | 1476 KlassHandle current_klass; |
1477 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
1478 resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK); | |
1479 } | |
1480 | |
1481 | |
1482 void LinkResolver::resolve_invokevirtual(CallInfo& result, Handle recv, | |
1483 constantPoolHandle pool, int index, | |
1484 TRAPS) { | |
1485 | |
1486 KlassHandle resolved_klass; | |
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1487 Symbol* method_name = NULL; |
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1488 Symbol* method_signature = NULL; |
0 | 1489 KlassHandle current_klass; |
1490 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1491 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1492 resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1493 } | |
1494 | |
1495 | |
1496 void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) { | |
1497 KlassHandle resolved_klass; | |
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1498 Symbol* method_name = NULL; |
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1499 Symbol* method_signature = NULL; |
0 | 1500 KlassHandle current_klass; |
1501 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); | |
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1502 KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass()); |
0 | 1503 resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK); |
1504 } | |
1505 | |
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1506 |
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1507 void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1508 assert(EnableInvokeDynamic, ""); |
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1509 // This guy is reached from InterpreterRuntime::resolve_invokehandle. |
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1510 KlassHandle resolved_klass; |
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1511 Symbol* method_name = NULL; |
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1512 Symbol* method_signature = NULL; |
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1513 KlassHandle current_klass; |
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1514 resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK); |
9082 | 1515 if (TraceMethodHandles) { |
1516 ResourceMark rm(THREAD); | |
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1517 tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string()); |
9082 | 1518 } |
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1519 resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK); |
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1520 } |
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1521 |
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1522 void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass, |
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1523 Symbol* method_name, Symbol* method_signature, |
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1524 KlassHandle current_klass, |
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1525 TRAPS) { |
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1526 // JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar |
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1527 assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), ""); |
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1528 assert(MethodHandles::is_signature_polymorphic_name(method_name), ""); |
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1529 methodHandle resolved_method; |
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1530 Handle resolved_appendix; |
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1531 Handle resolved_method_type; |
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1532 lookup_polymorphic_method(resolved_method, resolved_klass, |
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1533 method_name, method_signature, |
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1534 current_klass, &resolved_appendix, &resolved_method_type, CHECK); |
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1535 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1536 } |
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1537 |
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1538 |
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1539 void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) { |
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1540 assert(EnableInvokeDynamic, ""); |
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1541 |
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1542 //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK); |
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1543 Symbol* method_name = pool->name_ref_at(index); |
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1544 Symbol* method_signature = pool->signature_ref_at(index); |
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1545 KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder()); |
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1546 |
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1547 // Resolve the bootstrap specifier (BSM + optional arguments). |
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1548 Handle bootstrap_specifier; |
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1549 // Check if CallSite has been bound already: |
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1550 ConstantPoolCacheEntry* cpce = pool->invokedynamic_cp_cache_entry_at(index); |
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1551 if (cpce->is_f1_null()) { |
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1552 int pool_index = cpce->constant_pool_index(); |
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1553 oop bsm_info = pool->resolve_bootstrap_specifier_at(pool_index, CHECK); |
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1554 assert(bsm_info != NULL, ""); |
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1555 // FIXME: Cache this once per BootstrapMethods entry, not once per CONSTANT_InvokeDynamic. |
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1556 bootstrap_specifier = Handle(THREAD, bsm_info); |
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1557 } |
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1558 if (!cpce->is_f1_null()) { |
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1559 methodHandle method( THREAD, cpce->f1_as_method()); |
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1560 Handle appendix( THREAD, cpce->appendix_if_resolved(pool)); |
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1561 Handle method_type(THREAD, cpce->method_type_if_resolved(pool)); |
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1562 result.set_handle(method, appendix, method_type, CHECK); |
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1563 return; |
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1564 } |
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1565 |
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1566 if (TraceMethodHandles) { |
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1567 ResourceMark rm(THREAD); |
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1568 tty->print_cr("resolve_invokedynamic #%d %s %s", |
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1569 ConstantPool::decode_invokedynamic_index(index), |
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1570 method_name->as_C_string(), method_signature->as_C_string()); |
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1571 tty->print(" BSM info: "); bootstrap_specifier->print(); |
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1572 } |
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1573 |
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1574 resolve_dynamic_call(result, bootstrap_specifier, method_name, method_signature, current_klass, CHECK); |
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1575 } |
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1576 |
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1577 void LinkResolver::resolve_dynamic_call(CallInfo& result, |
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1578 Handle bootstrap_specifier, |
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1579 Symbol* method_name, Symbol* method_signature, |
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1580 KlassHandle current_klass, |
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1581 TRAPS) { |
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1582 // JSR 292: this must resolve to an implicitly generated method MH.linkToCallSite(*...) |
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1583 // The appendix argument is likely to be a freshly-created CallSite. |
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1584 Handle resolved_appendix; |
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1585 Handle resolved_method_type; |
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1586 methodHandle resolved_method = |
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1587 SystemDictionary::find_dynamic_call_site_invoker(current_klass, |
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1588 bootstrap_specifier, |
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1589 method_name, method_signature, |
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1590 &resolved_appendix, |
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1591 &resolved_method_type, |
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1592 THREAD); |
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1593 if (HAS_PENDING_EXCEPTION) { |
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1594 if (TraceMethodHandles) { |
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1595 tty->print_cr("invokedynamic throws BSME for "INTPTR_FORMAT, (void *)PENDING_EXCEPTION); |
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1596 PENDING_EXCEPTION->print(); |
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1597 } |
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1598 if (PENDING_EXCEPTION->is_a(SystemDictionary::BootstrapMethodError_klass())) { |
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1599 // throw these guys, since they are already wrapped |
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1600 return; |
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1601 } |
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1602 if (!PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) { |
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1603 // intercept only LinkageErrors which might have failed to wrap |
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1604 return; |
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1605 } |
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1606 // See the "Linking Exceptions" section for the invokedynamic instruction in the JVMS. |
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1607 Handle nested_exception(THREAD, PENDING_EXCEPTION); |
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1608 CLEAR_PENDING_EXCEPTION; |
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1609 THROW_CAUSE(vmSymbols::java_lang_BootstrapMethodError(), nested_exception) |
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1610 } |
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1611 result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK); |
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1612 } |
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1613 |
0 | 1614 //------------------------------------------------------------------------------------------------------------------------ |
1615 #ifndef PRODUCT | |
1616 | |
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1617 void CallInfo::print() { |
0 | 1618 ResourceMark rm; |
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1619 const char* kindstr = "unknown"; |
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1620 switch (_call_kind) { |
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1621 case direct_call: kindstr = "direct"; break; |
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1622 case vtable_call: kindstr = "vtable"; break; |
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1623 case itable_call: kindstr = "itable"; break; |
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1624 } |
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1625 tty->print_cr("Call %s@%d %s", kindstr, _call_index, |
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1626 _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string()); |
0 | 1627 } |
1628 | |
1629 #endif |