Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/classFileParser.cpp @ 7457:35431a769282
8004823: Add VM support for type annotation reflection
Reviewed-by: dholmes, coleenp
Contributed-by: joel.franck@oracle.com
| author | stefank |
|---|---|
| date | Thu, 20 Dec 2012 10:22:19 +0100 |
| parents | 5fafdef522c6 |
| children | ade95d680b42 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classFileParser.hpp" | |
| 27 #include "classfile/classLoader.hpp" | |
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28 #include "classfile/classLoaderData.hpp" |
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29 #include "classfile/classLoaderData.inline.hpp" |
| 6934 | 30 #include "classfile/defaultMethods.hpp" |
| 31 #include "classfile/genericSignatures.hpp" | |
| 1972 | 32 #include "classfile/javaClasses.hpp" |
| 33 #include "classfile/symbolTable.hpp" | |
| 34 #include "classfile/systemDictionary.hpp" | |
| 35 #include "classfile/verificationType.hpp" | |
| 36 #include "classfile/verifier.hpp" | |
| 37 #include "classfile/vmSymbols.hpp" | |
| 38 #include "memory/allocation.hpp" | |
| 39 #include "memory/gcLocker.hpp" | |
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40 #include "memory/metadataFactory.hpp" |
| 1972 | 41 #include "memory/oopFactory.hpp" |
| 42 #include "memory/universe.inline.hpp" | |
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43 #include "oops/constantPool.hpp" |
| 3938 | 44 #include "oops/fieldStreams.hpp" |
| 1972 | 45 #include "oops/instanceKlass.hpp" |
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46 #include "oops/instanceMirrorKlass.hpp" |
| 1972 | 47 #include "oops/klass.inline.hpp" |
| 48 #include "oops/klassVtable.hpp" | |
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49 #include "oops/method.hpp" |
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50 #include "oops/symbol.hpp" |
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51 #include "prims/jvm.h" |
| 1972 | 52 #include "prims/jvmtiExport.hpp" |
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53 #include "prims/jvmtiThreadState.hpp" |
| 1972 | 54 #include "runtime/javaCalls.hpp" |
| 55 #include "runtime/perfData.hpp" | |
| 56 #include "runtime/reflection.hpp" | |
| 57 #include "runtime/signature.hpp" | |
| 58 #include "runtime/timer.hpp" | |
| 59 #include "services/classLoadingService.hpp" | |
| 60 #include "services/threadService.hpp" | |
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61 #include "utilities/array.hpp" |
| 0 | 62 |
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63 // We generally try to create the oops directly when parsing, rather than |
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64 // allocating temporary data structures and copying the bytes twice. A |
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65 // temporary area is only needed when parsing utf8 entries in the constant |
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66 // pool and when parsing line number tables. |
| 0 | 67 |
| 68 // We add assert in debug mode when class format is not checked. | |
| 69 | |
| 70 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
| 71 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
| 6868 | 72 #define JAVA_MAX_SUPPORTED_VERSION 52 |
| 0 | 73 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
| 74 | |
| 75 // Used for two backward compatibility reasons: | |
| 76 // - to check for new additions to the class file format in JDK1.5 | |
| 77 // - to check for bug fixes in the format checker in JDK1.5 | |
| 78 #define JAVA_1_5_VERSION 49 | |
| 79 | |
| 80 // Used for backward compatibility reasons: | |
| 81 // - to check for javac bug fixes that happened after 1.5 | |
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82 // - also used as the max version when running in jdk6 |
| 0 | 83 #define JAVA_6_VERSION 50 |
| 84 | |
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85 // Used for backward compatibility reasons: |
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86 // - to check NameAndType_info signatures more aggressively |
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87 #define JAVA_7_VERSION 51 |
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88 |
| 6934 | 89 // Extension method support. |
| 90 #define JAVA_8_VERSION 52 | |
| 91 | |
| 0 | 92 |
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93 void ClassFileParser::parse_constant_pool_entries(ClassLoaderData* loader_data, constantPoolHandle cp, int length, TRAPS) { |
| 0 | 94 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
| 95 // this function (_current can be allocated in a register, with scalar | |
| 96 // replacement of aggregates). The _current pointer is copied back to | |
| 97 // stream() when this function returns. DON'T call another method within | |
| 98 // this method that uses stream(). | |
| 99 ClassFileStream* cfs0 = stream(); | |
| 100 ClassFileStream cfs1 = *cfs0; | |
| 101 ClassFileStream* cfs = &cfs1; | |
| 102 #ifdef ASSERT | |
| 1685 | 103 assert(cfs->allocated_on_stack(),"should be local"); |
| 0 | 104 u1* old_current = cfs0->current(); |
| 105 #endif | |
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106 Handle class_loader(THREAD, loader_data->class_loader()); |
| 0 | 107 |
| 108 // Used for batching symbol allocations. | |
| 109 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
| 110 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
| 111 int indices[SymbolTable::symbol_alloc_batch_size]; | |
| 112 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
| 113 int names_count = 0; | |
| 114 | |
| 115 // parsing Index 0 is unused | |
| 116 for (int index = 1; index < length; index++) { | |
| 117 // Each of the following case guarantees one more byte in the stream | |
| 118 // for the following tag or the access_flags following constant pool, | |
| 119 // so we don't need bounds-check for reading tag. | |
| 120 u1 tag = cfs->get_u1_fast(); | |
| 121 switch (tag) { | |
| 122 case JVM_CONSTANT_Class : | |
| 123 { | |
| 124 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
| 125 u2 name_index = cfs->get_u2_fast(); | |
| 126 cp->klass_index_at_put(index, name_index); | |
| 127 } | |
| 128 break; | |
| 129 case JVM_CONSTANT_Fieldref : | |
| 130 { | |
| 131 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 132 u2 class_index = cfs->get_u2_fast(); | |
| 133 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 134 cp->field_at_put(index, class_index, name_and_type_index); | |
| 135 } | |
| 136 break; | |
| 137 case JVM_CONSTANT_Methodref : | |
| 138 { | |
| 139 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 140 u2 class_index = cfs->get_u2_fast(); | |
| 141 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 142 cp->method_at_put(index, class_index, name_and_type_index); | |
| 143 } | |
| 144 break; | |
| 145 case JVM_CONSTANT_InterfaceMethodref : | |
| 146 { | |
| 147 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 148 u2 class_index = cfs->get_u2_fast(); | |
| 149 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 150 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
| 151 } | |
| 152 break; | |
| 153 case JVM_CONSTANT_String : | |
| 154 { | |
| 155 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
| 156 u2 string_index = cfs->get_u2_fast(); | |
| 157 cp->string_index_at_put(index, string_index); | |
| 158 } | |
| 159 break; | |
| 1602 | 160 case JVM_CONSTANT_MethodHandle : |
| 161 case JVM_CONSTANT_MethodType : | |
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162 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
| 1602 | 163 classfile_parse_error( |
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164 "Class file version does not support constant tag %u in class file %s", |
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165 tag, CHECK); |
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166 } |
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167 if (!EnableInvokeDynamic) { |
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168 classfile_parse_error( |
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169 "This JVM does not support constant tag %u in class file %s", |
| 1602 | 170 tag, CHECK); |
| 171 } | |
| 172 if (tag == JVM_CONSTANT_MethodHandle) { | |
| 173 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
| 174 u1 ref_kind = cfs->get_u1_fast(); | |
| 175 u2 method_index = cfs->get_u2_fast(); | |
| 176 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
| 177 } else if (tag == JVM_CONSTANT_MethodType) { | |
| 178 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
| 179 u2 signature_index = cfs->get_u2_fast(); | |
| 180 cp->method_type_index_at_put(index, signature_index); | |
| 181 } else { | |
| 182 ShouldNotReachHere(); | |
| 183 } | |
| 184 break; | |
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185 case JVM_CONSTANT_InvokeDynamic : |
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186 { |
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187 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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188 classfile_parse_error( |
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189 "Class file version does not support constant tag %u in class file %s", |
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190 tag, CHECK); |
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191 } |
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192 if (!EnableInvokeDynamic) { |
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193 classfile_parse_error( |
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194 "This JVM does not support constant tag %u in class file %s", |
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195 tag, CHECK); |
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196 } |
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197 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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198 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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199 u2 name_and_type_index = cfs->get_u2_fast(); |
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200 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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201 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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202 cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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203 } |
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204 break; |
| 0 | 205 case JVM_CONSTANT_Integer : |
| 206 { | |
| 207 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
| 208 u4 bytes = cfs->get_u4_fast(); | |
| 209 cp->int_at_put(index, (jint) bytes); | |
| 210 } | |
| 211 break; | |
| 212 case JVM_CONSTANT_Float : | |
| 213 { | |
| 214 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
| 215 u4 bytes = cfs->get_u4_fast(); | |
| 216 cp->float_at_put(index, *(jfloat*)&bytes); | |
| 217 } | |
| 218 break; | |
| 219 case JVM_CONSTANT_Long : | |
| 220 // A mangled type might cause you to overrun allocated memory | |
| 221 guarantee_property(index+1 < length, | |
| 222 "Invalid constant pool entry %u in class file %s", | |
| 223 index, CHECK); | |
| 224 { | |
| 225 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
| 226 u8 bytes = cfs->get_u8_fast(); | |
| 227 cp->long_at_put(index, bytes); | |
| 228 } | |
| 229 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
| 230 break; | |
| 231 case JVM_CONSTANT_Double : | |
| 232 // A mangled type might cause you to overrun allocated memory | |
| 233 guarantee_property(index+1 < length, | |
| 234 "Invalid constant pool entry %u in class file %s", | |
| 235 index, CHECK); | |
| 236 { | |
| 237 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
| 238 u8 bytes = cfs->get_u8_fast(); | |
| 239 cp->double_at_put(index, *(jdouble*)&bytes); | |
| 240 } | |
| 241 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
| 242 break; | |
| 243 case JVM_CONSTANT_NameAndType : | |
| 244 { | |
| 245 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
| 246 u2 name_index = cfs->get_u2_fast(); | |
| 247 u2 signature_index = cfs->get_u2_fast(); | |
| 248 cp->name_and_type_at_put(index, name_index, signature_index); | |
| 249 } | |
| 250 break; | |
| 251 case JVM_CONSTANT_Utf8 : | |
| 252 { | |
| 253 cfs->guarantee_more(2, CHECK); // utf8_length | |
| 254 u2 utf8_length = cfs->get_u2_fast(); | |
| 255 u1* utf8_buffer = cfs->get_u1_buffer(); | |
| 256 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
| 257 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
| 258 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
| 259 cfs->skip_u1_fast(utf8_length); | |
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260 |
| 0 | 261 // Before storing the symbol, make sure it's legal |
| 262 if (_need_verify) { | |
| 263 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
| 264 } | |
| 265 | |
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266 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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267 Handle patch = clear_cp_patch_at(index); |
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268 guarantee_property(java_lang_String::is_instance(patch()), |
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269 "Illegal utf8 patch at %d in class file %s", |
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270 index, CHECK); |
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271 char* str = java_lang_String::as_utf8_string(patch()); |
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272 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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273 utf8_buffer = (u1*) str; |
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274 utf8_length = (int) strlen(str); |
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275 } |
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276 |
| 0 | 277 unsigned int hash; |
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278 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
| 0 | 279 if (result == NULL) { |
| 280 names[names_count] = (char*)utf8_buffer; | |
| 281 lengths[names_count] = utf8_length; | |
| 282 indices[names_count] = index; | |
| 283 hashValues[names_count++] = hash; | |
| 284 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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285 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
| 0 | 286 names_count = 0; |
| 287 } | |
| 288 } else { | |
| 289 cp->symbol_at_put(index, result); | |
| 290 } | |
| 291 } | |
| 292 break; | |
| 293 default: | |
| 294 classfile_parse_error( | |
| 295 "Unknown constant tag %u in class file %s", tag, CHECK); | |
| 296 break; | |
| 297 } | |
| 298 } | |
| 299 | |
| 300 // Allocate the remaining symbols | |
| 301 if (names_count > 0) { | |
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302 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
| 0 | 303 } |
| 304 | |
| 305 // Copy _current pointer of local copy back to stream(). | |
| 306 #ifdef ASSERT | |
| 307 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
| 308 #endif | |
| 309 cfs0->set_current(cfs1.current()); | |
| 310 } | |
| 311 | |
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312 // This class unreferences constant pool symbols if an error has occurred |
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313 // while parsing the class before it is assigned into the class. |
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314 // If it gets an error after that it is unloaded and the constant pool will |
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315 // be cleaned up then. |
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316 class ConstantPoolCleaner : public StackObj { |
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317 constantPoolHandle _cphandle; |
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318 bool _in_error; |
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319 public: |
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320 ConstantPoolCleaner(constantPoolHandle cp) : _cphandle(cp), _in_error(true) {} |
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321 ~ConstantPoolCleaner() { |
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322 if (_in_error && _cphandle.not_null()) { |
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323 _cphandle->unreference_symbols(); |
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324 } |
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325 } |
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326 void set_in_error(bool clean) { _in_error = clean; } |
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327 }; |
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328 |
| 0 | 329 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
| 330 | |
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331 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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332 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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333 return cp->symbol_at(index); |
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334 else |
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335 return NULL; |
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336 } |
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337 |
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338 constantPoolHandle ClassFileParser::parse_constant_pool(ClassLoaderData* loader_data, TRAPS) { |
| 0 | 339 ClassFileStream* cfs = stream(); |
| 340 constantPoolHandle nullHandle; | |
| 341 | |
| 342 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
| 343 u2 length = cfs->get_u2_fast(); | |
| 344 guarantee_property( | |
| 345 length >= 1, "Illegal constant pool size %u in class file %s", | |
| 346 length, CHECK_(nullHandle)); | |
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347 ConstantPool* constant_pool = |
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348 ConstantPool::allocate(loader_data, |
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349 length, |
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350 CHECK_(nullHandle)); |
| 0 | 351 constantPoolHandle cp (THREAD, constant_pool); |
| 352 | |
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353 ConstantPoolCleaner cp_in_error(cp); // set constant pool to be cleaned up. |
| 0 | 354 |
| 355 // parsing constant pool entries | |
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356 parse_constant_pool_entries(loader_data, cp, length, CHECK_(nullHandle)); |
| 0 | 357 |
| 358 int index = 1; // declared outside of loops for portability | |
| 359 | |
| 360 // first verification pass - validate cross references and fixup class and string constants | |
| 361 for (index = 1; index < length; index++) { // Index 0 is unused | |
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362 jbyte tag = cp->tag_at(index).value(); |
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363 switch (tag) { |
| 0 | 364 case JVM_CONSTANT_Class : |
| 365 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
| 366 break; | |
| 367 case JVM_CONSTANT_Fieldref : | |
| 368 // fall through | |
| 369 case JVM_CONSTANT_Methodref : | |
| 370 // fall through | |
| 371 case JVM_CONSTANT_InterfaceMethodref : { | |
| 372 if (!_need_verify) break; | |
| 373 int klass_ref_index = cp->klass_ref_index_at(index); | |
| 374 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
| 375 check_property(valid_cp_range(klass_ref_index, length) && | |
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376 is_klass_reference(cp, klass_ref_index), |
| 0 | 377 "Invalid constant pool index %u in class file %s", |
| 378 klass_ref_index, | |
| 379 CHECK_(nullHandle)); | |
| 380 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
| 381 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
| 382 "Invalid constant pool index %u in class file %s", | |
| 383 name_and_type_ref_index, | |
| 384 CHECK_(nullHandle)); | |
| 385 break; | |
| 386 } | |
| 387 case JVM_CONSTANT_String : | |
| 388 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
| 389 break; | |
| 390 case JVM_CONSTANT_Integer : | |
| 391 break; | |
| 392 case JVM_CONSTANT_Float : | |
| 393 break; | |
| 394 case JVM_CONSTANT_Long : | |
| 395 case JVM_CONSTANT_Double : | |
| 396 index++; | |
| 397 check_property( | |
| 398 (index < length && cp->tag_at(index).is_invalid()), | |
| 399 "Improper constant pool long/double index %u in class file %s", | |
| 400 index, CHECK_(nullHandle)); | |
| 401 break; | |
| 402 case JVM_CONSTANT_NameAndType : { | |
| 403 if (!_need_verify) break; | |
| 404 int name_ref_index = cp->name_ref_index_at(index); | |
| 405 int signature_ref_index = cp->signature_ref_index_at(index); | |
| 406 check_property( | |
| 407 valid_cp_range(name_ref_index, length) && | |
| 408 cp->tag_at(name_ref_index).is_utf8(), | |
| 409 "Invalid constant pool index %u in class file %s", | |
| 410 name_ref_index, CHECK_(nullHandle)); | |
| 411 check_property( | |
| 412 valid_cp_range(signature_ref_index, length) && | |
| 413 cp->tag_at(signature_ref_index).is_utf8(), | |
| 414 "Invalid constant pool index %u in class file %s", | |
| 415 signature_ref_index, CHECK_(nullHandle)); | |
| 416 break; | |
| 417 } | |
| 418 case JVM_CONSTANT_Utf8 : | |
| 419 break; | |
| 420 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
| 421 case JVM_CONSTANT_UnresolvedClassInError: | |
| 422 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
| 423 break; | |
| 424 case JVM_CONSTANT_ClassIndex : | |
| 425 { | |
| 426 int class_index = cp->klass_index_at(index); | |
| 427 check_property( | |
| 428 valid_cp_range(class_index, length) && | |
| 429 cp->tag_at(class_index).is_utf8(), | |
| 430 "Invalid constant pool index %u in class file %s", | |
| 431 class_index, CHECK_(nullHandle)); | |
| 432 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
| 433 } | |
| 434 break; | |
| 435 case JVM_CONSTANT_StringIndex : | |
| 436 { | |
| 437 int string_index = cp->string_index_at(index); | |
| 438 check_property( | |
| 439 valid_cp_range(string_index, length) && | |
| 440 cp->tag_at(string_index).is_utf8(), | |
| 441 "Invalid constant pool index %u in class file %s", | |
| 442 string_index, CHECK_(nullHandle)); | |
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443 Symbol* sym = cp->symbol_at(string_index); |
| 0 | 444 cp->unresolved_string_at_put(index, sym); |
| 445 } | |
| 446 break; | |
| 1602 | 447 case JVM_CONSTANT_MethodHandle : |
| 448 { | |
| 449 int ref_index = cp->method_handle_index_at(index); | |
| 450 check_property( | |
| 451 valid_cp_range(ref_index, length) && | |
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452 EnableInvokeDynamic, |
| 1602 | 453 "Invalid constant pool index %u in class file %s", |
| 454 ref_index, CHECK_(nullHandle)); | |
| 455 constantTag tag = cp->tag_at(ref_index); | |
| 456 int ref_kind = cp->method_handle_ref_kind_at(index); | |
| 457 switch (ref_kind) { | |
| 458 case JVM_REF_getField: | |
| 459 case JVM_REF_getStatic: | |
| 460 case JVM_REF_putField: | |
| 461 case JVM_REF_putStatic: | |
| 462 check_property( | |
| 463 tag.is_field(), | |
| 464 "Invalid constant pool index %u in class file %s (not a field)", | |
| 465 ref_index, CHECK_(nullHandle)); | |
| 466 break; | |
| 467 case JVM_REF_invokeVirtual: | |
| 468 case JVM_REF_invokeStatic: | |
| 469 case JVM_REF_invokeSpecial: | |
| 470 case JVM_REF_newInvokeSpecial: | |
| 471 check_property( | |
| 472 tag.is_method(), | |
| 473 "Invalid constant pool index %u in class file %s (not a method)", | |
| 474 ref_index, CHECK_(nullHandle)); | |
| 475 break; | |
| 476 case JVM_REF_invokeInterface: | |
| 477 check_property( | |
| 478 tag.is_interface_method(), | |
| 479 "Invalid constant pool index %u in class file %s (not an interface method)", | |
| 480 ref_index, CHECK_(nullHandle)); | |
| 481 break; | |
| 482 default: | |
| 483 classfile_parse_error( | |
| 484 "Bad method handle kind at constant pool index %u in class file %s", | |
| 485 index, CHECK_(nullHandle)); | |
| 486 } | |
| 487 // Keep the ref_index unchanged. It will be indirected at link-time. | |
| 488 } | |
| 489 break; | |
| 490 case JVM_CONSTANT_MethodType : | |
| 491 { | |
| 492 int ref_index = cp->method_type_index_at(index); | |
| 493 check_property( | |
| 494 valid_cp_range(ref_index, length) && | |
| 495 cp->tag_at(ref_index).is_utf8() && | |
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496 EnableInvokeDynamic, |
| 1602 | 497 "Invalid constant pool index %u in class file %s", |
| 498 ref_index, CHECK_(nullHandle)); | |
| 499 } | |
| 500 break; | |
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501 case JVM_CONSTANT_InvokeDynamic : |
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502 { |
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503 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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504 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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505 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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506 "Invalid constant pool index %u in class file %s", |
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507 name_and_type_ref_index, |
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508 CHECK_(nullHandle)); |
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509 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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510 break; |
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511 } |
| 0 | 512 default: |
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513 fatal(err_msg("bad constant pool tag value %u", |
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514 cp->tag_at(index).value())); |
| 0 | 515 ShouldNotReachHere(); |
| 516 break; | |
| 517 } // end of switch | |
| 518 } // end of for | |
| 519 | |
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520 if (_cp_patches != NULL) { |
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521 // need to treat this_class specially... |
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522 assert(EnableInvokeDynamic, ""); |
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523 int this_class_index; |
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524 { |
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525 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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526 u1* mark = cfs->current(); |
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527 u2 flags = cfs->get_u2_fast(); |
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528 this_class_index = cfs->get_u2_fast(); |
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529 cfs->set_current(mark); // revert to mark |
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530 } |
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531 |
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532 for (index = 1; index < length; index++) { // Index 0 is unused |
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533 if (has_cp_patch_at(index)) { |
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534 guarantee_property(index != this_class_index, |
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535 "Illegal constant pool patch to self at %d in class file %s", |
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536 index, CHECK_(nullHandle)); |
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537 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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538 } |
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539 } |
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540 } |
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541 |
| 0 | 542 if (!_need_verify) { |
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543 cp_in_error.set_in_error(false); |
| 0 | 544 return cp; |
| 545 } | |
| 546 | |
| 547 // second verification pass - checks the strings are of the right format. | |
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548 // but not yet to the other entries |
| 0 | 549 for (index = 1; index < length; index++) { |
| 550 jbyte tag = cp->tag_at(index).value(); | |
| 551 switch (tag) { | |
| 552 case JVM_CONSTANT_UnresolvedClass: { | |
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553 Symbol* class_name = cp->unresolved_klass_at(index); |
|
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554 // check the name, even if _cp_patches will overwrite it |
| 0 | 555 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
| 556 break; | |
| 557 } | |
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558 case JVM_CONSTANT_NameAndType: { |
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559 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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560 int sig_index = cp->signature_ref_index_at(index); |
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561 int name_index = cp->name_ref_index_at(index); |
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562 Symbol* name = cp->symbol_at(name_index); |
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563 Symbol* sig = cp->symbol_at(sig_index); |
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564 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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565 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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566 } else { |
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567 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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568 } |
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569 } |
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570 break; |
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571 } |
|
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572 case JVM_CONSTANT_InvokeDynamic: |
| 0 | 573 case JVM_CONSTANT_Fieldref: |
| 574 case JVM_CONSTANT_Methodref: | |
| 575 case JVM_CONSTANT_InterfaceMethodref: { | |
| 576 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
| 577 // already verified to be utf8 | |
| 578 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
| 579 // already verified to be utf8 | |
| 580 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
|
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581 Symbol* name = cp->symbol_at(name_ref_index); |
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582 Symbol* signature = cp->symbol_at(signature_ref_index); |
| 0 | 583 if (tag == JVM_CONSTANT_Fieldref) { |
| 584 verify_legal_field_name(name, CHECK_(nullHandle)); | |
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585 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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586 // Signature is verified above, when iterating NameAndType_info. |
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587 // Need only to be sure it's the right type. |
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588 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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589 throwIllegalSignature( |
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590 "Field", name, signature, CHECK_(nullHandle)); |
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591 } |
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592 } else { |
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593 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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594 } |
| 0 | 595 } else { |
| 596 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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597 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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598 // Signature is verified above, when iterating NameAndType_info. |
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599 // Need only to be sure it's the right type. |
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600 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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601 throwIllegalSignature( |
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602 "Method", name, signature, CHECK_(nullHandle)); |
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603 } |
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604 } else { |
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605 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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606 } |
| 0 | 607 if (tag == JVM_CONSTANT_Methodref) { |
| 608 // 4509014: If a class method name begins with '<', it must be "<init>". | |
|
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609 assert(name != NULL, "method name in constant pool is null"); |
| 0 | 610 unsigned int name_len = name->utf8_length(); |
| 611 assert(name_len > 0, "bad method name"); // already verified as legal name | |
| 612 if (name->byte_at(0) == '<') { | |
|
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613 if (name != vmSymbols::object_initializer_name()) { |
| 0 | 614 classfile_parse_error( |
| 615 "Bad method name at constant pool index %u in class file %s", | |
| 616 name_ref_index, CHECK_(nullHandle)); | |
| 617 } | |
| 618 } | |
| 619 } | |
| 620 } | |
| 621 break; | |
| 622 } | |
| 1602 | 623 case JVM_CONSTANT_MethodHandle: { |
| 624 int ref_index = cp->method_handle_index_at(index); | |
| 625 int ref_kind = cp->method_handle_ref_kind_at(index); | |
| 626 switch (ref_kind) { | |
| 627 case JVM_REF_invokeVirtual: | |
| 628 case JVM_REF_invokeStatic: | |
| 629 case JVM_REF_invokeSpecial: | |
| 630 case JVM_REF_newInvokeSpecial: | |
| 631 { | |
| 632 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
| 633 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
|
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634 Symbol* name = cp->symbol_at(name_ref_index); |
| 1602 | 635 if (ref_kind == JVM_REF_newInvokeSpecial) { |
|
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636 if (name != vmSymbols::object_initializer_name()) { |
| 1602 | 637 classfile_parse_error( |
| 638 "Bad constructor name at constant pool index %u in class file %s", | |
| 639 name_ref_index, CHECK_(nullHandle)); | |
| 640 } | |
| 641 } else { | |
|
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642 if (name == vmSymbols::object_initializer_name()) { |
| 1602 | 643 classfile_parse_error( |
| 644 "Bad method name at constant pool index %u in class file %s", | |
| 645 name_ref_index, CHECK_(nullHandle)); | |
| 646 } | |
| 647 } | |
| 648 } | |
| 649 break; | |
| 650 // Other ref_kinds are already fully checked in previous pass. | |
| 651 } | |
| 652 break; | |
| 653 } | |
| 654 case JVM_CONSTANT_MethodType: { | |
|
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655 Symbol* no_name = vmSymbols::type_name(); // place holder |
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656 Symbol* signature = cp->method_type_signature_at(index); |
| 1602 | 657 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
| 658 break; | |
| 659 } | |
|
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660 case JVM_CONSTANT_Utf8: { |
|
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661 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
|
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662 } |
| 0 | 663 } // end of switch |
| 664 } // end of for | |
| 665 | |
|
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666 cp_in_error.set_in_error(false); |
| 0 | 667 return cp; |
| 668 } | |
| 669 | |
| 670 | |
|
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671 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
|
2416
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6817525: turn on method handle functionality by default for JSR 292
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672 assert(EnableInvokeDynamic, ""); |
|
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673 BasicType patch_type = T_VOID; |
|
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674 |
|
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675 switch (cp->tag_at(index).value()) { |
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676 |
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677 case JVM_CONSTANT_UnresolvedClass : |
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678 // Patching a class means pre-resolving it. |
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679 // The name in the constant pool is ignored. |
| 1602 | 680 if (java_lang_Class::is_instance(patch())) { |
|
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681 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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682 "Illegal class patch at %d in class file %s", |
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683 index, CHECK); |
|
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684 cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
|
431
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685 } else { |
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686 guarantee_property(java_lang_String::is_instance(patch()), |
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687 "Illegal class patch at %d in class file %s", |
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688 index, CHECK); |
|
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689 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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690 cp->unresolved_klass_at_put(index, name); |
|
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691 } |
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692 break; |
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693 |
|
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694 case JVM_CONSTANT_String : |
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695 // skip this patch and don't clear it. Needs the oop array for resolved |
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696 // references to be created first. |
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697 return; |
|
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698 |
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699 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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700 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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701 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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702 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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703 patch_prim: |
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704 { |
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705 jvalue value; |
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706 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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707 guarantee_property(value_type == patch_type, |
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708 "Illegal primitive patch at %d in class file %s", |
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709 index, CHECK); |
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710 switch (value_type) { |
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711 case T_INT: cp->int_at_put(index, value.i); break; |
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712 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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713 case T_LONG: cp->long_at_put(index, value.j); break; |
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714 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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|
715 default: assert(false, ""); |
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716 } |
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717 } |
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718 break; |
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719 |
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720 default: |
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721 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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722 guarantee_property(!has_cp_patch_at(index), |
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723 "Illegal unexpected patch at %d in class file %s", |
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724 index, CHECK); |
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725 return; |
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726 } |
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727 |
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728 // On fall-through, mark the patch as used. |
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729 clear_cp_patch_at(index); |
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730 } |
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731 |
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732 |
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733 |
| 0 | 734 class NameSigHash: public ResourceObj { |
| 735 public: | |
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736 Symbol* _name; // name |
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737 Symbol* _sig; // signature |
| 0 | 738 NameSigHash* _next; // Next entry in hash table |
| 739 }; | |
| 740 | |
| 741 | |
| 742 #define HASH_ROW_SIZE 256 | |
| 743 | |
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744 unsigned int hash(Symbol* name, Symbol* sig) { |
| 0 | 745 unsigned int raw_hash = 0; |
| 746 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
| 747 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
| 748 | |
| 749 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
| 750 } | |
| 751 | |
| 752 | |
| 753 void initialize_hashtable(NameSigHash** table) { | |
| 754 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
| 755 } | |
| 756 | |
| 757 // Return false if the name/sig combination is found in table. | |
| 758 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
| 759 // The old format checker uses heap sort to find duplicates. | |
| 760 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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761 // of table since we don't expect Symbol*'s to move. |
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762 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
| 0 | 763 assert(name != NULL, "name in constant pool is NULL"); |
| 764 | |
| 765 // First lookup for duplicates | |
| 766 int index = hash(name, sig); | |
| 767 NameSigHash* entry = table[index]; | |
| 768 while (entry != NULL) { | |
| 769 if (entry->_name == name && entry->_sig == sig) { | |
| 770 return false; | |
| 771 } | |
| 772 entry = entry->_next; | |
| 773 } | |
| 774 | |
| 775 // No duplicate is found, allocate a new entry and fill it. | |
| 776 entry = new NameSigHash(); | |
| 777 entry->_name = name; | |
| 778 entry->_sig = sig; | |
| 779 | |
| 780 // Insert into hash table | |
| 781 entry->_next = table[index]; | |
| 782 table[index] = entry; | |
| 783 | |
| 784 return true; | |
| 785 } | |
| 786 | |
| 787 | |
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788 Array<Klass*>* ClassFileParser::parse_interfaces(constantPoolHandle cp, |
| 0 | 789 int length, |
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790 ClassLoaderData* loader_data, |
| 0 | 791 Handle protection_domain, |
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792 Symbol* class_name, |
| 6934 | 793 bool* has_default_methods, |
| 0 | 794 TRAPS) { |
| 795 ClassFileStream* cfs = stream(); | |
| 796 assert(length > 0, "only called for length>0"); | |
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797 // FIXME: Leak at later OOM. |
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798 Array<Klass*>* interfaces = MetadataFactory::new_array<Klass*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 799 |
| 800 int index; | |
| 801 for (index = 0; index < length; index++) { | |
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802 u2 interface_index = cfs->get_u2(CHECK_NULL); |
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803 KlassHandle interf; |
| 0 | 804 check_property( |
| 805 valid_cp_range(interface_index, cp->length()) && | |
|
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806 is_klass_reference(cp, interface_index), |
| 0 | 807 "Interface name has bad constant pool index %u in class file %s", |
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808 interface_index, CHECK_NULL); |
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809 if (cp->tag_at(interface_index).is_klass()) { |
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810 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
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811 } else { |
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812 Symbol* unresolved_klass = cp->klass_name_at(interface_index); |
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813 |
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814 // Don't need to check legal name because it's checked when parsing constant pool. |
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815 // But need to make sure it's not an array type. |
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816 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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817 "Bad interface name in class file %s", CHECK_NULL); |
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818 Handle class_loader(THREAD, loader_data->class_loader()); |
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819 |
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820 // Call resolve_super so classcircularity is checked |
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821 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
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822 unresolved_klass, class_loader, protection_domain, |
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823 false, CHECK_NULL); |
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824 interf = KlassHandle(THREAD, k); |
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825 } |
| 0 | 826 |
| 6983 | 827 if (!interf()->is_interface()) { |
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828 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
| 0 | 829 } |
| 6934 | 830 if (InstanceKlass::cast(interf())->has_default_methods()) { |
| 831 *has_default_methods = true; | |
| 832 } | |
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833 interfaces->at_put(index, interf()); |
| 0 | 834 } |
| 835 | |
| 836 if (!_need_verify || length <= 1) { | |
| 837 return interfaces; | |
| 838 } | |
| 839 | |
| 840 // Check if there's any duplicates in interfaces | |
| 841 ResourceMark rm(THREAD); | |
| 842 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 843 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 844 initialize_hashtable(interface_names); | |
| 845 bool dup = false; | |
| 846 { | |
| 847 debug_only(No_Safepoint_Verifier nsv;) | |
| 848 for (index = 0; index < length; index++) { | |
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849 Klass* k = interfaces->at(index); |
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850 Symbol* name = InstanceKlass::cast(k)->name(); |
| 0 | 851 // If no duplicates, add (name, NULL) in hashtable interface_names. |
| 852 if (!put_after_lookup(name, NULL, interface_names)) { | |
| 853 dup = true; | |
| 854 break; | |
| 855 } | |
| 856 } | |
| 857 } | |
| 858 if (dup) { | |
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859 classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
| 0 | 860 } |
| 861 | |
| 862 return interfaces; | |
| 863 } | |
| 864 | |
| 865 | |
| 866 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
| 867 // Make sure the constant pool entry is of a type appropriate to this field | |
| 868 guarantee_property( | |
| 869 (constantvalue_index > 0 && | |
| 870 constantvalue_index < cp->length()), | |
| 871 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
| 872 constantvalue_index, CHECK); | |
| 873 constantTag value_type = cp->tag_at(constantvalue_index); | |
| 874 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
| 875 case T_LONG: | |
| 876 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
| 877 break; | |
| 878 case T_FLOAT: | |
| 879 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
| 880 break; | |
| 881 case T_DOUBLE: | |
| 882 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
| 883 break; | |
| 884 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
| 885 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
| 886 break; | |
| 887 case T_OBJECT: | |
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888 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
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889 && value_type.is_string()), |
| 0 | 890 "Bad string initial value in class file %s", CHECK); |
| 891 break; | |
| 892 default: | |
| 893 classfile_parse_error( | |
| 894 "Unable to set initial value %u in class file %s", | |
| 895 constantvalue_index, CHECK); | |
| 896 } | |
| 897 } | |
| 898 | |
| 899 | |
| 900 // Parse attributes for a field. | |
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901 void ClassFileParser::parse_field_attributes(ClassLoaderData* loader_data, |
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902 constantPoolHandle cp, |
| 0 | 903 u2 attributes_count, |
| 904 bool is_static, u2 signature_index, | |
| 905 u2* constantvalue_index_addr, | |
| 906 bool* is_synthetic_addr, | |
| 907 u2* generic_signature_index_addr, | |
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908 AnnotationArray** field_annotations, |
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909 AnnotationArray** field_type_annotations, |
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910 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
| 0 | 911 TRAPS) { |
| 912 ClassFileStream* cfs = stream(); | |
| 913 assert(attributes_count > 0, "length should be greater than 0"); | |
| 914 u2 constantvalue_index = 0; | |
| 915 u2 generic_signature_index = 0; | |
| 916 bool is_synthetic = false; | |
| 917 u1* runtime_visible_annotations = NULL; | |
| 918 int runtime_visible_annotations_length = 0; | |
| 919 u1* runtime_invisible_annotations = NULL; | |
| 920 int runtime_invisible_annotations_length = 0; | |
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921 u1* runtime_visible_type_annotations = NULL; |
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922 int runtime_visible_type_annotations_length = 0; |
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923 u1* runtime_invisible_type_annotations = NULL; |
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924 int runtime_invisible_type_annotations_length = 0; |
| 0 | 925 while (attributes_count--) { |
| 926 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
| 927 u2 attribute_name_index = cfs->get_u2_fast(); | |
| 928 u4 attribute_length = cfs->get_u4_fast(); | |
| 929 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
| 930 cp->tag_at(attribute_name_index).is_utf8(), | |
| 931 "Invalid field attribute index %u in class file %s", | |
| 932 attribute_name_index, | |
| 933 CHECK); | |
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934 Symbol* attribute_name = cp->symbol_at(attribute_name_index); |
| 0 | 935 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
| 936 // ignore if non-static | |
| 937 if (constantvalue_index != 0) { | |
| 938 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
| 939 } | |
| 940 check_property( | |
| 941 attribute_length == 2, | |
| 942 "Invalid ConstantValue field attribute length %u in class file %s", | |
| 943 attribute_length, CHECK); | |
| 944 constantvalue_index = cfs->get_u2(CHECK); | |
| 945 if (_need_verify) { | |
| 946 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
| 947 } | |
| 948 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
| 949 if (attribute_length != 0) { | |
| 950 classfile_parse_error( | |
| 951 "Invalid Synthetic field attribute length %u in class file %s", | |
| 952 attribute_length, CHECK); | |
| 953 } | |
| 954 is_synthetic = true; | |
| 955 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
| 956 if (attribute_length != 0) { | |
| 957 classfile_parse_error( | |
| 958 "Invalid Deprecated field attribute length %u in class file %s", | |
| 959 attribute_length, CHECK); | |
| 960 } | |
| 961 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 962 if (attribute_name == vmSymbols::tag_signature()) { | |
| 963 if (attribute_length != 2) { | |
| 964 classfile_parse_error( | |
| 965 "Wrong size %u for field's Signature attribute in class file %s", | |
| 966 attribute_length, CHECK); | |
| 967 } | |
| 968 generic_signature_index = cfs->get_u2(CHECK); | |
| 969 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
| 970 runtime_visible_annotations_length = attribute_length; | |
| 971 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 972 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
| 973 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
| 974 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 975 runtime_invisible_annotations_length = attribute_length; | |
| 976 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 977 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 978 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
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979 } else if (attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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980 runtime_visible_type_annotations_length = attribute_length; |
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981 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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982 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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983 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
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984 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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985 runtime_invisible_type_annotations_length = attribute_length; |
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986 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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987 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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988 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
| 0 | 989 } else { |
| 990 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
| 991 } | |
| 992 } else { | |
| 993 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
| 994 } | |
| 995 } | |
| 996 | |
| 997 *constantvalue_index_addr = constantvalue_index; | |
| 998 *is_synthetic_addr = is_synthetic; | |
| 999 *generic_signature_index_addr = generic_signature_index; | |
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1000 *field_annotations = assemble_annotations(loader_data, |
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1001 runtime_visible_annotations, |
| 0 | 1002 runtime_visible_annotations_length, |
| 1003 runtime_invisible_annotations, | |
| 1004 runtime_invisible_annotations_length, | |
| 1005 CHECK); | |
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1006 *field_type_annotations = assemble_annotations(loader_data, |
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1007 runtime_visible_type_annotations, |
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1008 runtime_visible_type_annotations_length, |
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1009 runtime_invisible_type_annotations, |
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1010 runtime_invisible_type_annotations_length, |
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1011 CHECK); |
| 0 | 1012 return; |
| 1013 } | |
| 1014 | |
| 1015 | |
| 1016 // Field allocation types. Used for computing field offsets. | |
| 1017 | |
| 1018 enum FieldAllocationType { | |
| 1019 STATIC_OOP, // Oops | |
| 1020 STATIC_BYTE, // Boolean, Byte, char | |
| 1021 STATIC_SHORT, // shorts | |
| 1022 STATIC_WORD, // ints | |
| 3938 | 1023 STATIC_DOUBLE, // aligned long or double |
| 0 | 1024 NONSTATIC_OOP, |
| 1025 NONSTATIC_BYTE, | |
| 1026 NONSTATIC_SHORT, | |
| 1027 NONSTATIC_WORD, | |
| 1028 NONSTATIC_DOUBLE, | |
| 3938 | 1029 MAX_FIELD_ALLOCATION_TYPE, |
| 1030 BAD_ALLOCATION_TYPE = -1 | |
| 0 | 1031 }; |
| 1032 | |
| 3938 | 1033 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
| 1034 BAD_ALLOCATION_TYPE, // 0 | |
| 1035 BAD_ALLOCATION_TYPE, // 1 | |
| 1036 BAD_ALLOCATION_TYPE, // 2 | |
| 1037 BAD_ALLOCATION_TYPE, // 3 | |
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1038 NONSTATIC_BYTE , // T_BOOLEAN = 4, |
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1039 NONSTATIC_SHORT, // T_CHAR = 5, |
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1040 NONSTATIC_WORD, // T_FLOAT = 6, |
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1041 NONSTATIC_DOUBLE, // T_DOUBLE = 7, |
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1042 NONSTATIC_BYTE, // T_BYTE = 8, |
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1043 NONSTATIC_SHORT, // T_SHORT = 9, |
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1044 NONSTATIC_WORD, // T_INT = 10, |
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1045 NONSTATIC_DOUBLE, // T_LONG = 11, |
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1046 NONSTATIC_OOP, // T_OBJECT = 12, |
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1047 NONSTATIC_OOP, // T_ARRAY = 13, |
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1048 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1049 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1050 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1051 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1052 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1053 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
| 3938 | 1054 BAD_ALLOCATION_TYPE, // 0 |
| 1055 BAD_ALLOCATION_TYPE, // 1 | |
| 1056 BAD_ALLOCATION_TYPE, // 2 | |
| 1057 BAD_ALLOCATION_TYPE, // 3 | |
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1058 STATIC_BYTE , // T_BOOLEAN = 4, |
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1059 STATIC_SHORT, // T_CHAR = 5, |
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1060 STATIC_WORD, // T_FLOAT = 6, |
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1061 STATIC_DOUBLE, // T_DOUBLE = 7, |
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1062 STATIC_BYTE, // T_BYTE = 8, |
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1063 STATIC_SHORT, // T_SHORT = 9, |
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1064 STATIC_WORD, // T_INT = 10, |
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1065 STATIC_DOUBLE, // T_LONG = 11, |
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1066 STATIC_OOP, // T_OBJECT = 12, |
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1067 STATIC_OOP, // T_ARRAY = 13, |
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1068 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1069 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1070 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1071 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1072 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1073 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
| 0 | 1074 }; |
| 1075 | |
| 3938 | 1076 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
| 1077 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
| 1078 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
| 1079 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
| 1080 return result; | |
| 1081 } | |
| 1082 | |
| 1083 class FieldAllocationCount: public ResourceObj { | |
| 1084 public: | |
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1085 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
| 3938 | 1086 |
| 1087 FieldAllocationCount() { | |
| 1088 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
| 1089 count[i] = 0; | |
| 1090 } | |
| 1091 } | |
| 1092 | |
| 1093 FieldAllocationType update(bool is_static, BasicType type) { | |
| 1094 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1095 // Make sure there is no overflow with injected fields. |
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1096 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
| 3938 | 1097 count[atype]++; |
| 1098 return atype; | |
| 1099 } | |
| 1100 }; | |
| 1101 | |
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1102 Array<u2>* ClassFileParser::parse_fields(ClassLoaderData* loader_data, |
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1103 Symbol* class_name, |
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1104 constantPoolHandle cp, |
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1105 bool is_interface, |
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1106 FieldAllocationCount *fac, |
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1107 Array<AnnotationArray*>** fields_annotations, |
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1108 Array<AnnotationArray*>** fields_type_annotations, |
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1109 u2* java_fields_count_ptr, TRAPS) { |
| 0 | 1110 ClassFileStream* cfs = stream(); |
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1111 cfs->guarantee_more(2, CHECK_NULL); // length |
| 0 | 1112 u2 length = cfs->get_u2_fast(); |
| 3938 | 1113 *java_fields_count_ptr = length; |
| 1114 | |
| 1115 int num_injected = 0; | |
| 1116 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1117 int total_fields = length + num_injected; |
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1118 |
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1119 // The field array starts with tuples of shorts |
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1120 // [access, name index, sig index, initial value index, byte offset]. |
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1121 // A generic signature slot only exists for field with generic |
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1122 // signature attribute. And the access flag is set with |
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1123 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1124 // signature slots are at the end of the field array and after all |
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1125 // other fields data. |
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1126 // |
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1127 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1128 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1129 // ... |
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1130 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1131 // [generic signature index] |
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1132 // [generic signature index] |
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1133 // ... |
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1134 // |
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1135 // Allocate a temporary resource array for field data. For each field, |
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1136 // a slot is reserved in the temporary array for the generic signature |
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1137 // index. After parsing all fields, the data are copied to a permanent |
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1138 // array and any unused slots will be discarded. |
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1139 ResourceMark rm(THREAD); |
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1140 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1141 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
| 0 | 1142 |
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1143 AnnotationArray* field_annotations = NULL; |
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1144 AnnotationArray* field_type_annotations = NULL; |
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1145 // The generic signature slots start after all other fields' data. |
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1146 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1147 int num_generic_signature = 0; |
| 0 | 1148 for (int n = 0; n < length; n++) { |
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1149 cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
| 0 | 1150 |
| 1151 AccessFlags access_flags; | |
| 1152 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
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1153 verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
| 0 | 1154 access_flags.set_flags(flags); |
| 1155 | |
| 1156 u2 name_index = cfs->get_u2_fast(); | |
| 1157 int cp_size = cp->length(); | |
| 1158 check_property( | |
| 1159 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
| 1160 "Invalid constant pool index %u for field name in class file %s", | |
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1161 name_index, CHECK_NULL); |
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1162 Symbol* name = cp->symbol_at(name_index); |
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1163 verify_legal_field_name(name, CHECK_NULL); |
| 0 | 1164 |
| 1165 u2 signature_index = cfs->get_u2_fast(); | |
| 1166 check_property( | |
| 1167 valid_cp_range(signature_index, cp_size) && | |
| 1168 cp->tag_at(signature_index).is_utf8(), | |
| 1169 "Invalid constant pool index %u for field signature in class file %s", | |
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1170 signature_index, CHECK_NULL); |
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1171 Symbol* sig = cp->symbol_at(signature_index); |
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1172 verify_legal_field_signature(name, sig, CHECK_NULL); |
| 0 | 1173 |
| 1174 u2 constantvalue_index = 0; | |
| 1175 bool is_synthetic = false; | |
| 1176 u2 generic_signature_index = 0; | |
| 1177 bool is_static = access_flags.is_static(); | |
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1178 FieldAnnotationCollector parsed_annotations; |
| 0 | 1179 |
| 1180 u2 attributes_count = cfs->get_u2_fast(); | |
| 1181 if (attributes_count > 0) { | |
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1182 parse_field_attributes(loader_data, |
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1183 cp, attributes_count, is_static, signature_index, |
| 0 | 1184 &constantvalue_index, &is_synthetic, |
| 1185 &generic_signature_index, &field_annotations, | |
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1186 &field_type_annotations, &parsed_annotations, |
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1187 CHECK_NULL); |
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1188 if (field_annotations != NULL) { |
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1189 if (*fields_annotations == NULL) { |
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1190 *fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1191 loader_data, length, NULL, |
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1192 CHECK_NULL); |
| 0 | 1193 } |
|
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1194 (*fields_annotations)->at_put(n, field_annotations); |
| 0 | 1195 } |
|
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1196 if (field_type_annotations != NULL) { |
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1197 if (*fields_type_annotations == NULL) { |
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1198 *fields_type_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1199 loader_data, length, NULL, |
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1200 CHECK_NULL); |
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1201 } |
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1202 (*fields_type_annotations)->at_put(n, field_type_annotations); |
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1203 } |
| 0 | 1204 if (is_synthetic) { |
| 1205 access_flags.set_is_synthetic(); | |
| 1206 } | |
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1207 if (generic_signature_index != 0) { |
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1208 access_flags.set_field_has_generic_signature(); |
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1209 fa[generic_signature_slot] = generic_signature_index; |
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1210 generic_signature_slot ++; |
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1211 num_generic_signature ++; |
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1212 } |
| 0 | 1213 } |
| 1214 | |
|
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1215 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
| 3938 | 1216 field->initialize(access_flags.as_short(), |
| 1217 name_index, | |
| 1218 signature_index, | |
| 1219 constantvalue_index, | |
| 1220 0); | |
|
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1221 if (parsed_annotations.has_any_annotations()) |
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1222 parsed_annotations.apply_to(field); |
| 3938 | 1223 |
| 1224 BasicType type = cp->basic_type_for_signature_at(signature_index); | |
| 0 | 1225 |
| 1226 // Remember how many oops we encountered and compute allocation type | |
| 3938 | 1227 FieldAllocationType atype = fac->update(is_static, type); |
| 0 | 1228 |
| 1229 // The correct offset is computed later (all oop fields will be located together) | |
| 1230 // We temporarily store the allocation type in the offset field | |
| 3938 | 1231 field->set_offset(atype); |
| 1232 } | |
| 1233 | |
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1234 int index = length; |
| 3938 | 1235 if (num_injected != 0) { |
| 1236 for (int n = 0; n < num_injected; n++) { | |
| 1237 // Check for duplicates | |
| 1238 if (injected[n].may_be_java) { | |
| 1239 Symbol* name = injected[n].name(); | |
| 1240 Symbol* signature = injected[n].signature(); | |
| 1241 bool duplicate = false; | |
| 1242 for (int i = 0; i < length; i++) { | |
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1243 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
| 3938 | 1244 if (name == cp->symbol_at(f->name_index()) && |
| 1245 signature == cp->symbol_at(f->signature_index())) { | |
| 1246 // Symbol is desclared in Java so skip this one | |
| 1247 duplicate = true; | |
| 1248 break; | |
| 1249 } | |
| 1250 } | |
| 1251 if (duplicate) { | |
| 1252 // These will be removed from the field array at the end | |
| 1253 continue; | |
| 1254 } | |
| 1255 } | |
| 1256 | |
| 1257 // Injected field | |
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1258 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
| 3938 | 1259 field->initialize(JVM_ACC_FIELD_INTERNAL, |
| 1260 injected[n].name_index, | |
| 1261 injected[n].signature_index, | |
| 1262 0, | |
| 1263 0); | |
| 1264 | |
| 1265 BasicType type = FieldType::basic_type(injected[n].signature()); | |
| 1266 | |
| 1267 // Remember how many oops we encountered and compute allocation type | |
| 1268 FieldAllocationType atype = fac->update(false, type); | |
| 1269 | |
| 1270 // The correct offset is computed later (all oop fields will be located together) | |
| 1271 // We temporarily store the allocation type in the offset field | |
| 1272 field->set_offset(atype); | |
| 1273 index++; | |
| 1274 } | |
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1275 } |
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1276 |
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1277 // Now copy the fields' data from the temporary resource array. |
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1278 // Sometimes injected fields already exist in the Java source so |
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1279 // the fields array could be too long. In that case the |
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1280 // fields array is trimed. Also unused slots that were reserved |
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1281 // for generic signature indexes are discarded. |
|
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1282 Array<u2>* fields = MetadataFactory::new_array<u2>( |
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1283 loader_data, index * FieldInfo::field_slots + num_generic_signature, |
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1284 CHECK_NULL); |
|
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1285 { |
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1286 int i = 0; |
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1287 for (; i < index * FieldInfo::field_slots; i++) { |
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1288 fields->at_put(i, fa[i]); |
| 3938 | 1289 } |
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1290 for (int j = total_fields * FieldInfo::field_slots; |
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1291 j < generic_signature_slot; j++) { |
|
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1292 fields->at_put(i++, fa[j]); |
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1293 } |
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1294 assert(i == fields->length(), ""); |
| 0 | 1295 } |
| 1296 | |
| 1297 if (_need_verify && length > 1) { | |
| 1298 // Check duplicated fields | |
| 1299 ResourceMark rm(THREAD); | |
| 1300 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 1301 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 1302 initialize_hashtable(names_and_sigs); | |
| 1303 bool dup = false; | |
| 1304 { | |
| 1305 debug_only(No_Safepoint_Verifier nsv;) | |
| 3938 | 1306 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
| 1307 Symbol* name = fs.name(); | |
| 1308 Symbol* sig = fs.signature(); | |
| 0 | 1309 // If no duplicates, add name/signature in hashtable names_and_sigs. |
| 1310 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
| 1311 dup = true; | |
| 1312 break; | |
| 1313 } | |
| 1314 } | |
| 1315 } | |
| 1316 if (dup) { | |
| 1317 classfile_parse_error("Duplicate field name&signature in class file %s", | |
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1318 CHECK_NULL); |
| 0 | 1319 } |
| 1320 } | |
| 1321 | |
| 1322 return fields; | |
| 1323 } | |
| 1324 | |
| 1325 | |
| 1326 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
| 1327 while (length-- > 0) { | |
| 1328 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
| 1329 } | |
| 1330 } | |
| 1331 | |
| 1332 | |
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1333 u2* ClassFileParser::parse_exception_table(ClassLoaderData* loader_data, |
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1334 u4 code_length, |
|
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1335 u4 exception_table_length, |
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1336 constantPoolHandle cp, |
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1337 TRAPS) { |
| 0 | 1338 ClassFileStream* cfs = stream(); |
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1339 |
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1340 u2* exception_table_start = cfs->get_u2_buffer(); |
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1341 assert(exception_table_start != NULL, "null exception table"); |
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1342 cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
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1343 // Will check legal target after parsing code array in verifier. |
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1344 if (_need_verify) { |
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1345 for (unsigned int i = 0; i < exception_table_length; i++) { |
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1346 u2 start_pc = cfs->get_u2_fast(); |
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1347 u2 end_pc = cfs->get_u2_fast(); |
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1348 u2 handler_pc = cfs->get_u2_fast(); |
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1349 u2 catch_type_index = cfs->get_u2_fast(); |
| 0 | 1350 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
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1351 "Illegal exception table range in class file %s", |
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1352 CHECK_NULL); |
| 0 | 1353 guarantee_property(handler_pc < code_length, |
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1354 "Illegal exception table handler in class file %s", |
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1355 CHECK_NULL); |
| 0 | 1356 if (catch_type_index != 0) { |
| 1357 guarantee_property(valid_cp_range(catch_type_index, cp->length()) && | |
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1358 is_klass_reference(cp, catch_type_index), |
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1359 "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
| 0 | 1360 } |
| 1361 } | |
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1362 } else { |
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1363 cfs->skip_u2_fast(exception_table_length * 4); |
| 0 | 1364 } |
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1365 return exception_table_start; |
| 0 | 1366 } |
| 1367 | |
| 1368 void ClassFileParser::parse_linenumber_table( | |
| 1369 u4 code_attribute_length, u4 code_length, | |
| 1370 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
| 1371 ClassFileStream* cfs = stream(); | |
| 1372 unsigned int num_entries = cfs->get_u2(CHECK); | |
| 1373 | |
| 1374 // Each entry is a u2 start_pc, and a u2 line_number | |
| 1375 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
| 1376 | |
| 1377 // Verify line number attribute and table length | |
| 1378 check_property( | |
| 1379 code_attribute_length == sizeof(u2) + length_in_bytes, | |
| 1380 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
| 1381 | |
| 1382 cfs->guarantee_more(length_in_bytes, CHECK); | |
| 1383 | |
| 1384 if ((*write_stream) == NULL) { | |
| 1385 if (length_in_bytes > fixed_buffer_size) { | |
| 1386 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
| 1387 } else { | |
| 1388 (*write_stream) = new CompressedLineNumberWriteStream( | |
| 1389 linenumbertable_buffer, fixed_buffer_size); | |
| 1390 } | |
| 1391 } | |
| 1392 | |
| 1393 while (num_entries-- > 0) { | |
| 1394 u2 bci = cfs->get_u2_fast(); // start_pc | |
| 1395 u2 line = cfs->get_u2_fast(); // line_number | |
| 1396 guarantee_property(bci < code_length, | |
| 1397 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
| 1398 (*write_stream)->write_pair(bci, line); | |
| 1399 } | |
| 1400 } | |
| 1401 | |
| 1402 | |
| 1403 // Class file LocalVariableTable elements. | |
| 1404 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
| 1405 public: | |
| 1406 u2 start_bci; | |
| 1407 u2 length; | |
| 1408 u2 name_cp_index; | |
| 1409 u2 descriptor_cp_index; | |
| 1410 u2 slot; | |
| 1411 }; | |
| 1412 | |
| 1413 | |
| 6197 | 1414 class LVT_Hash: public CHeapObj<mtClass> { |
| 0 | 1415 public: |
| 1416 LocalVariableTableElement *_elem; // element | |
| 1417 LVT_Hash* _next; // Next entry in hash table | |
| 1418 }; | |
| 1419 | |
| 1420 unsigned int hash(LocalVariableTableElement *elem) { | |
| 1421 unsigned int raw_hash = elem->start_bci; | |
| 1422 | |
| 1423 raw_hash = elem->length + raw_hash * 37; | |
| 1424 raw_hash = elem->name_cp_index + raw_hash * 37; | |
| 1425 raw_hash = elem->slot + raw_hash * 37; | |
| 1426 | |
| 1427 return raw_hash % HASH_ROW_SIZE; | |
| 1428 } | |
| 1429 | |
| 1430 void initialize_hashtable(LVT_Hash** table) { | |
| 1431 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
| 1432 table[i] = NULL; | |
| 1433 } | |
| 1434 } | |
| 1435 | |
| 1436 void clear_hashtable(LVT_Hash** table) { | |
| 1437 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
| 1438 LVT_Hash* current = table[i]; | |
| 1439 LVT_Hash* next; | |
| 1440 while (current != NULL) { | |
| 1441 next = current->_next; | |
| 1442 current->_next = NULL; | |
| 1443 delete(current); | |
| 1444 current = next; | |
| 1445 } | |
| 1446 table[i] = NULL; | |
| 1447 } | |
| 1448 } | |
| 1449 | |
| 1450 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
| 1451 LVT_Hash* entry = table[index]; | |
| 1452 | |
| 1453 /* | |
| 1454 * 3-tuple start_bci/length/slot has to be unique key, | |
| 1455 * so the following comparison seems to be redundant: | |
| 1456 * && elem->name_cp_index == entry->_elem->name_cp_index | |
| 1457 */ | |
| 1458 while (entry != NULL) { | |
| 1459 if (elem->start_bci == entry->_elem->start_bci | |
| 1460 && elem->length == entry->_elem->length | |
| 1461 && elem->name_cp_index == entry->_elem->name_cp_index | |
| 1462 && elem->slot == entry->_elem->slot | |
| 1463 ) { | |
| 1464 return entry; | |
| 1465 } | |
| 1466 entry = entry->_next; | |
| 1467 } | |
| 1468 return NULL; | |
| 1469 } | |
| 1470 | |
| 1471 // Return false if the local variable is found in table. | |
| 1472 // Return true if no duplicate is found. | |
| 1473 // And local variable is added as a new entry in table. | |
| 1474 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
| 1475 // First lookup for duplicates | |
| 1476 int index = hash(elem); | |
| 1477 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
| 1478 | |
| 1479 if (entry != NULL) { | |
| 1480 return false; | |
| 1481 } | |
| 1482 // No duplicate is found, allocate a new entry and fill it. | |
| 1483 if ((entry = new LVT_Hash()) == NULL) { | |
| 1484 return false; | |
| 1485 } | |
| 1486 entry->_elem = elem; | |
| 1487 | |
| 1488 // Insert into hash table | |
| 1489 entry->_next = table[index]; | |
| 1490 table[index] = entry; | |
| 1491 | |
| 1492 return true; | |
| 1493 } | |
| 1494 | |
| 1495 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
| 1496 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
| 1497 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
| 1498 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
| 1499 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
| 1500 lvt->signature_cp_index = 0; | |
| 1501 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
| 1502 } | |
| 1503 | |
| 1504 // Function is used to parse both attributes: | |
| 1505 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
| 1506 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
| 1507 u2 max_locals, | |
| 1508 u4 code_attribute_length, | |
| 1509 constantPoolHandle cp, | |
| 1510 u2* localvariable_table_length, | |
| 1511 bool isLVTT, | |
| 1512 TRAPS) { | |
| 1513 ClassFileStream* cfs = stream(); | |
| 1514 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
| 1515 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
| 1516 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
| 1517 // Verify local variable table attribute has right length | |
| 1518 if (_need_verify) { | |
| 1519 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
| 1520 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
| 1521 } | |
| 1522 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
| 1523 assert(localvariable_table_start != NULL, "null local variable table"); | |
| 1524 if (!_need_verify) { | |
| 1525 cfs->skip_u2_fast(size); | |
| 1526 } else { | |
| 1527 cfs->guarantee_more(size * 2, CHECK_NULL); | |
| 1528 for(int i = 0; i < (*localvariable_table_length); i++) { | |
| 1529 u2 start_pc = cfs->get_u2_fast(); | |
| 1530 u2 length = cfs->get_u2_fast(); | |
| 1531 u2 name_index = cfs->get_u2_fast(); | |
| 1532 u2 descriptor_index = cfs->get_u2_fast(); | |
| 1533 u2 index = cfs->get_u2_fast(); | |
| 1534 // Assign to a u4 to avoid overflow | |
| 1535 u4 end_pc = (u4)start_pc + (u4)length; | |
| 1536 | |
| 1537 if (start_pc >= code_length) { | |
| 1538 classfile_parse_error( | |
| 1539 "Invalid start_pc %u in %s in class file %s", | |
| 1540 start_pc, tbl_name, CHECK_NULL); | |
| 1541 } | |
| 1542 if (end_pc > code_length) { | |
| 1543 classfile_parse_error( | |
| 1544 "Invalid length %u in %s in class file %s", | |
| 1545 length, tbl_name, CHECK_NULL); | |
| 1546 } | |
| 1547 int cp_size = cp->length(); | |
| 1548 guarantee_property( | |
| 1549 valid_cp_range(name_index, cp_size) && | |
| 1550 cp->tag_at(name_index).is_utf8(), | |
| 1551 "Name index %u in %s has bad constant type in class file %s", | |
| 1552 name_index, tbl_name, CHECK_NULL); | |
| 1553 guarantee_property( | |
| 1554 valid_cp_range(descriptor_index, cp_size) && | |
| 1555 cp->tag_at(descriptor_index).is_utf8(), | |
| 1556 "Signature index %u in %s has bad constant type in class file %s", | |
| 1557 descriptor_index, tbl_name, CHECK_NULL); | |
| 1558 | |
|
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|
1559 Symbol* name = cp->symbol_at(name_index); |
|
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1560 Symbol* sig = cp->symbol_at(descriptor_index); |
| 0 | 1561 verify_legal_field_name(name, CHECK_NULL); |
| 1562 u2 extra_slot = 0; | |
| 1563 if (!isLVTT) { | |
| 1564 verify_legal_field_signature(name, sig, CHECK_NULL); | |
| 1565 | |
| 1566 // 4894874: check special cases for double and long local variables | |
|
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1567 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
|
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1568 sig == vmSymbols::type_signature(T_LONG)) { |
| 0 | 1569 extra_slot = 1; |
| 1570 } | |
| 1571 } | |
| 1572 guarantee_property((index + extra_slot) < max_locals, | |
| 1573 "Invalid index %u in %s in class file %s", | |
| 1574 index, tbl_name, CHECK_NULL); | |
| 1575 } | |
| 1576 } | |
| 1577 return localvariable_table_start; | |
| 1578 } | |
| 1579 | |
| 1580 | |
| 1581 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
| 1582 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { | |
| 1583 ClassFileStream* cfs = stream(); | |
| 1584 u2 index = 0; // index in the array with long/double occupying two slots | |
| 1585 u4 i1 = *u1_index; | |
| 1586 u4 i2 = *u2_index + 1; | |
| 1587 for(int i = 0; i < array_length; i++) { | |
| 1588 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
| 1589 index++; | |
| 1590 if (tag == ITEM_Long || tag == ITEM_Double) { | |
| 1591 index++; | |
| 1592 } else if (tag == ITEM_Object) { | |
| 1593 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
| 1594 guarantee_property(valid_cp_range(class_index, cp->length()) && | |
|
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|
1595 is_klass_reference(cp, class_index), |
| 0 | 1596 "Bad class index %u in StackMap in class file %s", |
| 1597 class_index, CHECK); | |
| 1598 } else if (tag == ITEM_Uninitialized) { | |
| 1599 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
| 1600 guarantee_property( | |
| 1601 offset < code_length, | |
| 1602 "Bad uninitialized type offset %u in StackMap in class file %s", | |
| 1603 offset, CHECK); | |
| 1604 } else { | |
| 1605 guarantee_property( | |
| 1606 tag <= (u1)ITEM_Uninitialized, | |
| 1607 "Unknown variable type %u in StackMap in class file %s", | |
| 1608 tag, CHECK); | |
| 1609 } | |
| 1610 } | |
| 1611 u2_array[*u2_index] = index; | |
| 1612 *u1_index = i1; | |
| 1613 *u2_index = i2; | |
| 1614 } | |
| 1615 | |
|
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1616 Array<u1>* ClassFileParser::parse_stackmap_table( |
|
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1617 ClassLoaderData* loader_data, |
| 0 | 1618 u4 code_attribute_length, TRAPS) { |
| 1619 if (code_attribute_length == 0) | |
| 1620 return NULL; | |
| 1621 | |
| 1622 ClassFileStream* cfs = stream(); | |
| 1623 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
| 1624 assert(stackmap_table_start != NULL, "null stackmap table"); | |
| 1625 | |
| 1626 // check code_attribute_length first | |
| 1627 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
| 1628 | |
| 1629 if (!_need_verify && !DumpSharedSpaces) { | |
| 1630 return NULL; | |
| 1631 } | |
| 1632 | |
|
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1633 Array<u1>* stackmap_data = |
|
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|
1634 MetadataFactory::new_array<u1>(loader_data, code_attribute_length, 0, CHECK_NULL); |
|
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|
1635 |
|
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|
1636 memcpy((void*)stackmap_data->adr_at(0), |
| 0 | 1637 (void*)stackmap_table_start, code_attribute_length); |
| 1638 return stackmap_data; | |
| 1639 } | |
| 1640 | |
| 1641 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
| 1642 u4 method_attribute_length, | |
| 1643 constantPoolHandle cp, TRAPS) { | |
| 1644 ClassFileStream* cfs = stream(); | |
| 1645 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
| 1646 *checked_exceptions_length = cfs->get_u2_fast(); | |
| 1647 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 1648 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
| 1649 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
| 1650 if (!_need_verify) { | |
| 1651 cfs->skip_u2_fast(size); | |
| 1652 } else { | |
| 1653 // Verify each value in the checked exception table | |
| 1654 u2 checked_exception; | |
| 1655 u2 len = *checked_exceptions_length; | |
| 1656 cfs->guarantee_more(2 * len, CHECK_NULL); | |
| 1657 for (int i = 0; i < len; i++) { | |
| 1658 checked_exception = cfs->get_u2_fast(); | |
| 1659 check_property( | |
| 1660 valid_cp_range(checked_exception, cp->length()) && | |
|
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|
1661 is_klass_reference(cp, checked_exception), |
| 0 | 1662 "Exception name has bad type at constant pool %u in class file %s", |
| 1663 checked_exception, CHECK_NULL); | |
| 1664 } | |
| 1665 } | |
| 1666 // check exceptions attribute length | |
| 1667 if (_need_verify) { | |
| 1668 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
| 1669 sizeof(u2) * size), | |
| 1670 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
| 1671 } | |
| 1672 return checked_exceptions_start; | |
| 1673 } | |
| 1674 | |
|
1586
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|
1675 void ClassFileParser::throwIllegalSignature( |
|
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|
1676 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
|
1586
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|
1677 ResourceMark rm(THREAD); |
|
086d73ccd6c0
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diff
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|
1678 Exceptions::fthrow(THREAD_AND_LOCATION, |
|
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diff
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|
1679 vmSymbols::java_lang_ClassFormatError(), |
|
086d73ccd6c0
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diff
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|
1680 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
|
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diff
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|
1681 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
|
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|
1682 } |
| 0 | 1683 |
|
6222
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|
1684 // Skip an annotation. Return >=limit if there is any problem. |
|
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|
1685 int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
|
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|
1686 // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
|
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|
1687 // value := switch (tag:u1) { ... } |
|
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|
1688 index += 2; // skip atype |
|
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|
1689 if ((index += 2) >= limit) return limit; // read nmem |
|
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diff
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|
1690 int nmem = Bytes::get_Java_u2(buffer+index-2); |
|
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|
1691 while (--nmem >= 0 && index < limit) { |
|
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diff
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|
1692 index += 2; // skip member |
|
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|
1693 index = skip_annotation_value(buffer, limit, index); |
|
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|
1694 } |
|
6d8f36bcef55
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|
1695 return index; |
|
6d8f36bcef55
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|
1696 } |
|
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|
1697 |
|
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|
1698 // Skip an annotation value. Return >=limit if there is any problem. |
|
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|
1699 int ClassFileParser::skip_annotation_value(u1* buffer, int limit, int index) { |
|
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|
1700 // value := switch (tag:u1) { |
|
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|
1701 // case B, C, I, S, Z, D, F, J, c: con:u2; |
|
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|
1702 // case e: e_class:u2 e_name:u2; |
|
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|
1703 // case s: s_con:u2; |
|
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|
1704 // case [: do(nval:u2) {value}; |
|
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|
1705 // case @: annotation; |
|
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|
1706 // case s: s_con:u2; |
|
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diff
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|
1707 // } |
|
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|
1708 if ((index += 1) >= limit) return limit; // read tag |
|
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|
1709 u1 tag = buffer[index-1]; |
|
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|
1710 switch (tag) { |
|
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diff
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|
1711 case 'B': case 'C': case 'I': case 'S': case 'Z': |
|
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diff
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|
1712 case 'D': case 'F': case 'J': case 'c': case 's': |
|
6d8f36bcef55
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diff
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|
1713 index += 2; // skip con or s_con |
|
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6711908: JVM needs direct access to some annotations
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diff
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|
1714 break; |
|
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diff
changeset
|
1715 case 'e': |
|
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|
1716 index += 4; // skip e_class, e_name |
|
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|
1717 break; |
|
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diff
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|
1718 case '[': |
|
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|
1719 { |
|
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|
1720 if ((index += 2) >= limit) return limit; // read nval |
|
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|
1721 int nval = Bytes::get_Java_u2(buffer+index-2); |
|
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|
1722 while (--nval >= 0 && index < limit) { |
|
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diff
changeset
|
1723 index = skip_annotation_value(buffer, limit, index); |
|
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diff
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|
1724 } |
|
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|
1725 } |
|
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diff
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|
1726 break; |
|
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diff
changeset
|
1727 case '@': |
|
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|
1728 index = skip_annotation(buffer, limit, index); |
|
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diff
changeset
|
1729 break; |
|
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diff
changeset
|
1730 default: |
|
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6711908: JVM needs direct access to some annotations
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diff
changeset
|
1731 assert(false, "annotation tag"); |
|
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|
1732 return limit; // bad tag byte |
|
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|
1733 } |
|
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|
1734 return index; |
|
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|
1735 } |
|
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|
1736 |
|
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|
1737 // Sift through annotations, looking for those significant to the VM: |
|
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|
1738 void ClassFileParser::parse_annotations(u1* buffer, int limit, |
|
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|
1739 constantPoolHandle cp, |
|
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|
1740 ClassFileParser::AnnotationCollector* coll, |
|
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|
1741 TRAPS) { |
|
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|
1742 // annotations := do(nann:u2) {annotation} |
|
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|
1743 int index = 0; |
|
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|
1744 if ((index += 2) >= limit) return; // read nann |
|
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|
1745 int nann = Bytes::get_Java_u2(buffer+index-2); |
|
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|
1746 enum { // initial annotation layout |
|
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|
1747 atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
|
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|
1748 count_off = 2, // u2 such as 1 (one value) |
|
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|
1749 member_off = 4, // utf8 such as 'value' |
|
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|
1750 tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
|
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|
1751 e_tag_val = 'e', |
|
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|
1752 e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
|
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|
1753 e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
|
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|
1754 e_size = 11, // end of 'e' annotation |
|
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|
1755 c_tag_val = 'c', |
|
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|
1756 c_con_off = 7, // utf8 payload, such as 'I' or 'Ljava/lang/String;' |
|
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|
1757 c_size = 9, // end of 'c' annotation |
|
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|
1758 min_size = 6 // smallest possible size (zero members) |
|
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|
1759 }; |
|
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|
1760 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
|
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|
1761 int index0 = index; |
|
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|
1762 index = skip_annotation(buffer, limit, index); |
|
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|
1763 u1* abase = buffer + index0; |
|
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|
1764 int atype = Bytes::get_Java_u2(abase + atype_off); |
|
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|
1765 int count = Bytes::get_Java_u2(abase + count_off); |
|
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|
1766 Symbol* aname = check_symbol_at(cp, atype); |
|
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|
1767 if (aname == NULL) break; // invalid annotation name |
|
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|
1768 Symbol* member = NULL; |
|
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|
1769 if (count >= 1) { |
|
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|
1770 int member_index = Bytes::get_Java_u2(abase + member_off); |
|
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|
1771 member = check_symbol_at(cp, member_index); |
|
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|
1772 if (member == NULL) break; // invalid member name |
|
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|
1773 } |
|
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|
1774 |
|
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|
1775 // Here is where parsing particular annotations will take place. |
|
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|
1776 AnnotationCollector::ID id = coll->annotation_index(aname); |
|
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|
1777 if (id == AnnotationCollector::_unknown) continue; |
|
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|
1778 coll->set_annotation(id); |
|
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|
1779 // If there are no values, just set the bit and move on: |
|
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|
1780 if (count == 0) continue; |
|
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|
1781 |
|
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|
1782 // For the record, here is how annotation payloads can be collected. |
|
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|
1783 // Suppose we want to capture @Retention.value. Here is how: |
|
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|
1784 //if (id == AnnotationCollector::_class_Retention) { |
|
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|
1785 // Symbol* payload = NULL; |
|
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|
1786 // if (count == 1 |
|
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|
1787 // && e_size == (index0 - index) // match size |
|
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|
1788 // && e_tag_val == *(abase + tag_off) |
|
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|
1789 // && (check_symbol_at(cp, Bytes::get_Java_u2(abase + e_type_off)) |
|
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|
1790 // == vmSymbols::RetentionPolicy_signature()) |
|
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|
1791 // && member == vmSymbols::value_name()) { |
|
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|
1792 // payload = check_symbol_at(cp, Bytes::get_Java_u2(abase + e_con_off)); |
|
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|
1793 // } |
|
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|
1794 // check_property(payload != NULL, |
|
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|
1795 // "Invalid @Retention annotation at offset %u in class file %s", |
|
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|
1796 // index0, CHECK); |
|
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|
1797 // if (payload != NULL) { |
|
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|
1798 // payload->increment_refcount(); |
|
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|
1799 // coll->_class_RetentionPolicy = payload; |
|
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|
1800 // } |
|
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|
1801 //} |
|
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|
1802 } |
|
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|
1803 } |
|
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|
1804 |
|
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|
1805 ClassFileParser::AnnotationCollector::ID ClassFileParser::AnnotationCollector::annotation_index(Symbol* name) { |
|
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|
1806 vmSymbols::SID sid = vmSymbols::find_sid(name); |
|
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|
1807 switch (sid) { |
|
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|
1808 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
|
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|
1809 if (_location != _in_method) break; // only allow for methods |
|
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|
1810 return _method_ForceInline; |
|
6266
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|
1811 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
|
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|
1812 if (_location != _in_method) break; // only allow for methods |
|
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|
1813 return _method_DontInline; |
|
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|
1814 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
|
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|
1815 if (_location != _in_method) break; // only allow for methods |
|
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|
1816 return _method_LambdaForm_Compiled; |
|
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|
1817 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
|
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|
1818 if (_location != _in_method) break; // only allow for methods |
|
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|
1819 return _method_LambdaForm_Hidden; |
|
6222
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|
1820 default: break; |
|
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|
1821 } |
|
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|
1822 return AnnotationCollector::_unknown; |
|
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|
1823 } |
|
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|
1824 |
|
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|
1825 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
|
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|
1826 fatal("no field annotations yet"); |
|
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|
1827 } |
|
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|
1828 |
|
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|
1829 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
|
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|
1830 if (has_annotation(_method_ForceInline)) |
|
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|
1831 m->set_force_inline(true); |
|
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|
1832 if (has_annotation(_method_DontInline)) |
|
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|
1833 m->set_dont_inline(true); |
|
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|
1834 if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
|
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|
1835 m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
|
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|
1836 if (has_annotation(_method_LambdaForm_Hidden)) |
|
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|
1837 m->set_hidden(true); |
|
6222
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|
1838 } |
|
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|
1839 |
|
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|
1840 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
|
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|
1841 fatal("no class annotations yet"); |
|
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|
1842 } |
|
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|
1843 |
|
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|
1844 |
| 0 | 1845 #define MAX_ARGS_SIZE 255 |
| 1846 #define MAX_CODE_SIZE 65535 | |
| 1847 #define INITIAL_MAX_LVT_NUMBER 256 | |
| 1848 | |
| 1849 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
|
6222
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|
1850 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
|
6725
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|
1851 // Method* to save footprint, so we only know the size of the resulting Method* when the |
| 0 | 1852 // entire method attribute is parsed. |
| 1853 // | |
| 1854 // The promoted_flags parameter is used to pass relevant access_flags | |
| 1855 // from the method back up to the containing klass. These flag values | |
| 1856 // are added to klass's access_flags. | |
| 1857 | |
|
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|
1858 methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data, |
|
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|
1859 constantPoolHandle cp, |
|
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|
1860 bool is_interface, |
| 0 | 1861 AccessFlags *promoted_flags, |
|
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|
1862 AnnotationArray** method_annotations, |
|
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1863 AnnotationArray** method_parameter_annotations, |
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1864 AnnotationArray** method_default_annotations, |
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1865 AnnotationArray** method_type_annotations, |
| 0 | 1866 TRAPS) { |
| 1867 ClassFileStream* cfs = stream(); | |
| 1868 methodHandle nullHandle; | |
| 1869 ResourceMark rm(THREAD); | |
| 1870 // Parse fixed parts | |
| 1871 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
| 1872 | |
| 1873 int flags = cfs->get_u2_fast(); | |
| 1874 u2 name_index = cfs->get_u2_fast(); | |
| 1875 int cp_size = cp->length(); | |
| 1876 check_property( | |
| 1877 valid_cp_range(name_index, cp_size) && | |
| 1878 cp->tag_at(name_index).is_utf8(), | |
| 1879 "Illegal constant pool index %u for method name in class file %s", | |
| 1880 name_index, CHECK_(nullHandle)); | |
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1881 Symbol* name = cp->symbol_at(name_index); |
| 0 | 1882 verify_legal_method_name(name, CHECK_(nullHandle)); |
| 1883 | |
| 1884 u2 signature_index = cfs->get_u2_fast(); | |
| 1885 guarantee_property( | |
| 1886 valid_cp_range(signature_index, cp_size) && | |
| 1887 cp->tag_at(signature_index).is_utf8(), | |
| 1888 "Illegal constant pool index %u for method signature in class file %s", | |
| 1889 signature_index, CHECK_(nullHandle)); | |
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1890 Symbol* signature = cp->symbol_at(signature_index); |
| 0 | 1891 |
| 1892 AccessFlags access_flags; | |
| 1893 if (name == vmSymbols::class_initializer_name()) { | |
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1894 // We ignore the other access flags for a valid class initializer. |
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1895 // (JVM Spec 2nd ed., chapter 4.6) |
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1896 if (_major_version < 51) { // backward compatibility |
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1897 flags = JVM_ACC_STATIC; |
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1898 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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1899 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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1900 } |
| 0 | 1901 } else { |
| 1902 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
| 1903 } | |
| 1904 | |
| 1905 int args_size = -1; // only used when _need_verify is true | |
| 1906 if (_need_verify) { | |
| 1907 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
| 1908 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
| 1909 if (args_size > MAX_ARGS_SIZE) { | |
| 1910 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
| 1911 } | |
| 1912 } | |
| 1913 | |
| 1914 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
| 1915 | |
| 1916 // Default values for code and exceptions attribute elements | |
| 1917 u2 max_stack = 0; | |
| 1918 u2 max_locals = 0; | |
| 1919 u4 code_length = 0; | |
| 1920 u1* code_start = 0; | |
| 1921 u2 exception_table_length = 0; | |
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1922 u2* exception_table_start = NULL; |
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1923 Array<int>* exception_handlers = Universe::the_empty_int_array(); |
| 0 | 1924 u2 checked_exceptions_length = 0; |
| 1925 u2* checked_exceptions_start = NULL; | |
| 1926 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
| 1927 int linenumber_table_length = 0; | |
| 1928 int total_lvt_length = 0; | |
| 1929 u2 lvt_cnt = 0; | |
| 1930 u2 lvtt_cnt = 0; | |
| 1931 bool lvt_allocated = false; | |
| 1932 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
| 1933 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
| 1934 u2* localvariable_table_length; | |
| 1935 u2** localvariable_table_start; | |
| 1936 u2* localvariable_type_table_length; | |
| 1937 u2** localvariable_type_table_start; | |
| 1938 bool parsed_code_attribute = false; | |
| 1939 bool parsed_checked_exceptions_attribute = false; | |
| 1940 bool parsed_stackmap_attribute = false; | |
| 1941 // stackmap attribute - JDK1.5 | |
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1942 Array<u1>* stackmap_data = NULL; |
| 0 | 1943 u2 generic_signature_index = 0; |
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1944 MethodAnnotationCollector parsed_annotations; |
| 0 | 1945 u1* runtime_visible_annotations = NULL; |
| 1946 int runtime_visible_annotations_length = 0; | |
| 1947 u1* runtime_invisible_annotations = NULL; | |
| 1948 int runtime_invisible_annotations_length = 0; | |
| 1949 u1* runtime_visible_parameter_annotations = NULL; | |
| 1950 int runtime_visible_parameter_annotations_length = 0; | |
| 1951 u1* runtime_invisible_parameter_annotations = NULL; | |
| 1952 int runtime_invisible_parameter_annotations_length = 0; | |
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1953 u1* runtime_visible_type_annotations = NULL; |
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1954 int runtime_visible_type_annotations_length = 0; |
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1955 u1* runtime_invisible_type_annotations = NULL; |
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1956 int runtime_invisible_type_annotations_length = 0; |
| 0 | 1957 u1* annotation_default = NULL; |
| 1958 int annotation_default_length = 0; | |
| 1959 | |
| 1960 // Parse code and exceptions attribute | |
| 1961 u2 method_attributes_count = cfs->get_u2_fast(); | |
| 1962 while (method_attributes_count--) { | |
| 1963 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
| 1964 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
| 1965 u4 method_attribute_length = cfs->get_u4_fast(); | |
| 1966 check_property( | |
| 1967 valid_cp_range(method_attribute_name_index, cp_size) && | |
| 1968 cp->tag_at(method_attribute_name_index).is_utf8(), | |
| 1969 "Invalid method attribute name index %u in class file %s", | |
| 1970 method_attribute_name_index, CHECK_(nullHandle)); | |
| 1971 | |
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1972 Symbol* method_attribute_name = cp->symbol_at(method_attribute_name_index); |
| 0 | 1973 if (method_attribute_name == vmSymbols::tag_code()) { |
| 1974 // Parse Code attribute | |
| 1975 if (_need_verify) { | |
| 6934 | 1976 guarantee_property( |
| 1977 !access_flags.is_native() && !access_flags.is_abstract(), | |
| 0 | 1978 "Code attribute in native or abstract methods in class file %s", |
| 1979 CHECK_(nullHandle)); | |
| 1980 } | |
| 1981 if (parsed_code_attribute) { | |
| 1982 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
| 1983 } | |
| 1984 parsed_code_attribute = true; | |
| 1985 | |
| 1986 // Stack size, locals size, and code size | |
| 1987 if (_major_version == 45 && _minor_version <= 2) { | |
| 1988 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
| 1989 max_stack = cfs->get_u1_fast(); | |
| 1990 max_locals = cfs->get_u1_fast(); | |
| 1991 code_length = cfs->get_u2_fast(); | |
| 1992 } else { | |
| 1993 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
| 1994 max_stack = cfs->get_u2_fast(); | |
| 1995 max_locals = cfs->get_u2_fast(); | |
| 1996 code_length = cfs->get_u4_fast(); | |
| 1997 } | |
| 1998 if (_need_verify) { | |
| 1999 guarantee_property(args_size <= max_locals, | |
| 2000 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
| 2001 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
| 2002 "Invalid method Code length %u in class file %s", | |
| 2003 code_length, CHECK_(nullHandle)); | |
| 2004 } | |
| 2005 // Code pointer | |
| 2006 code_start = cfs->get_u1_buffer(); | |
| 2007 assert(code_start != NULL, "null code start"); | |
| 2008 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
| 2009 cfs->skip_u1_fast(code_length); | |
| 2010 | |
| 2011 // Exception handler table | |
| 2012 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
| 2013 exception_table_length = cfs->get_u2_fast(); | |
| 2014 if (exception_table_length > 0) { | |
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2015 exception_table_start = |
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2016 parse_exception_table(loader_data, code_length, exception_table_length, cp, CHECK_(nullHandle)); |
| 0 | 2017 } |
| 2018 | |
| 2019 // Parse additional attributes in code attribute | |
| 2020 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
| 2021 u2 code_attributes_count = cfs->get_u2_fast(); | |
|
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2022 |
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2023 unsigned int calculated_attribute_length = 0; |
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2024 |
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2025 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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2026 calculated_attribute_length = |
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2027 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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2028 } else { |
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2029 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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2030 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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2031 } |
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2032 calculated_attribute_length += |
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2033 code_length + |
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2034 sizeof(exception_table_length) + |
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2035 sizeof(code_attributes_count) + |
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2036 exception_table_length * |
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2037 ( sizeof(u2) + // start_pc |
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2038 sizeof(u2) + // end_pc |
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2039 sizeof(u2) + // handler_pc |
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2040 sizeof(u2) ); // catch_type_index |
| 0 | 2041 |
| 2042 while (code_attributes_count--) { | |
| 2043 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
| 2044 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
| 2045 u4 code_attribute_length = cfs->get_u4_fast(); | |
| 2046 calculated_attribute_length += code_attribute_length + | |
| 2047 sizeof(code_attribute_name_index) + | |
| 2048 sizeof(code_attribute_length); | |
| 2049 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
| 2050 cp->tag_at(code_attribute_name_index).is_utf8(), | |
| 2051 "Invalid code attribute name index %u in class file %s", | |
| 2052 code_attribute_name_index, | |
| 2053 CHECK_(nullHandle)); | |
| 2054 if (LoadLineNumberTables && | |
| 2055 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
| 2056 // Parse and compress line number table | |
| 2057 parse_linenumber_table(code_attribute_length, code_length, | |
| 2058 &linenumber_table, CHECK_(nullHandle)); | |
| 2059 | |
| 2060 } else if (LoadLocalVariableTables && | |
| 2061 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
| 2062 // Parse local variable table | |
| 2063 if (!lvt_allocated) { | |
| 2064 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2065 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2066 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2067 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2068 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2069 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2070 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2071 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2072 lvt_allocated = true; | |
| 2073 } | |
| 2074 if (lvt_cnt == max_lvt_cnt) { | |
| 2075 max_lvt_cnt <<= 1; | |
| 2076 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
| 2077 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
| 2078 } | |
| 2079 localvariable_table_start[lvt_cnt] = | |
| 2080 parse_localvariable_table(code_length, | |
| 2081 max_locals, | |
| 2082 code_attribute_length, | |
| 2083 cp, | |
| 2084 &localvariable_table_length[lvt_cnt], | |
| 2085 false, // is not LVTT | |
| 2086 CHECK_(nullHandle)); | |
| 2087 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
| 2088 lvt_cnt++; | |
| 2089 } else if (LoadLocalVariableTypeTables && | |
| 2090 _major_version >= JAVA_1_5_VERSION && | |
| 2091 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
| 2092 if (!lvt_allocated) { | |
| 2093 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2094 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2095 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2096 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2097 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2098 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2099 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2100 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2101 lvt_allocated = true; | |
| 2102 } | |
| 2103 // Parse local variable type table | |
| 2104 if (lvtt_cnt == max_lvtt_cnt) { | |
| 2105 max_lvtt_cnt <<= 1; | |
| 2106 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
| 2107 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
| 2108 } | |
| 2109 localvariable_type_table_start[lvtt_cnt] = | |
| 2110 parse_localvariable_table(code_length, | |
| 2111 max_locals, | |
| 2112 code_attribute_length, | |
| 2113 cp, | |
| 2114 &localvariable_type_table_length[lvtt_cnt], | |
| 2115 true, // is LVTT | |
| 2116 CHECK_(nullHandle)); | |
| 2117 lvtt_cnt++; | |
| 2118 } else if (UseSplitVerifier && | |
| 2119 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
| 2120 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
| 2121 // Stack map is only needed by the new verifier in JDK1.5. | |
| 2122 if (parsed_stackmap_attribute) { | |
| 2123 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
| 2124 } | |
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2125 stackmap_data = parse_stackmap_table(loader_data, code_attribute_length, CHECK_(nullHandle)); |
| 0 | 2126 parsed_stackmap_attribute = true; |
| 2127 } else { | |
| 2128 // Skip unknown attributes | |
| 2129 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
| 2130 } | |
| 2131 } | |
| 2132 // check method attribute length | |
| 2133 if (_need_verify) { | |
| 2134 guarantee_property(method_attribute_length == calculated_attribute_length, | |
| 2135 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
| 2136 } | |
| 2137 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
| 2138 // Parse Exceptions attribute | |
| 2139 if (parsed_checked_exceptions_attribute) { | |
| 2140 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
| 2141 } | |
| 2142 parsed_checked_exceptions_attribute = true; | |
| 2143 checked_exceptions_start = | |
| 2144 parse_checked_exceptions(&checked_exceptions_length, | |
| 2145 method_attribute_length, | |
| 2146 cp, CHECK_(nullHandle)); | |
| 2147 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { | |
| 2148 if (method_attribute_length != 0) { | |
| 2149 classfile_parse_error( | |
| 2150 "Invalid Synthetic method attribute length %u in class file %s", | |
| 2151 method_attribute_length, CHECK_(nullHandle)); | |
| 2152 } | |
| 2153 // Should we check that there hasn't already been a synthetic attribute? | |
| 2154 access_flags.set_is_synthetic(); | |
| 2155 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
| 2156 if (method_attribute_length != 0) { | |
| 2157 classfile_parse_error( | |
| 2158 "Invalid Deprecated method attribute length %u in class file %s", | |
| 2159 method_attribute_length, CHECK_(nullHandle)); | |
| 2160 } | |
| 2161 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 2162 if (method_attribute_name == vmSymbols::tag_signature()) { | |
| 2163 if (method_attribute_length != 2) { | |
| 2164 classfile_parse_error( | |
| 2165 "Invalid Signature attribute length %u in class file %s", | |
| 2166 method_attribute_length, CHECK_(nullHandle)); | |
| 2167 } | |
| 2168 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
| 2169 generic_signature_index = cfs->get_u2_fast(); | |
| 2170 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
| 2171 runtime_visible_annotations_length = method_attribute_length; | |
| 2172 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 2173 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
| 6934 | 2174 parse_annotations(runtime_visible_annotations, |
| 2175 runtime_visible_annotations_length, cp, &parsed_annotations, | |
| 2176 CHECK_(nullHandle)); | |
| 0 | 2177 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
| 2178 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 2179 runtime_invisible_annotations_length = method_attribute_length; | |
| 2180 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 2181 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 2182 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
| 2183 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
| 2184 runtime_visible_parameter_annotations_length = method_attribute_length; | |
| 2185 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
| 2186 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
| 2187 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
| 2188 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
| 2189 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
| 2190 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
| 2191 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
| 2192 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
| 2193 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
| 2194 annotation_default_length = method_attribute_length; | |
| 2195 annotation_default = cfs->get_u1_buffer(); | |
| 2196 assert(annotation_default != NULL, "null annotation default"); | |
| 2197 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
|
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2198 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
|
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2199 runtime_visible_type_annotations_length = method_attribute_length; |
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2200 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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2201 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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2202 // No need for the VM to parse Type annotations |
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2203 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK_(nullHandle)); |
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2204 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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2205 runtime_invisible_type_annotations_length = method_attribute_length; |
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2206 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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2207 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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2208 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK_(nullHandle)); |
| 0 | 2209 } else { |
| 2210 // Skip unknown attributes | |
| 2211 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
| 2212 } | |
| 2213 } else { | |
| 2214 // Skip unknown attributes | |
| 2215 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
| 2216 } | |
| 2217 } | |
| 2218 | |
| 2219 if (linenumber_table != NULL) { | |
| 2220 linenumber_table->write_terminator(); | |
| 2221 linenumber_table_length = linenumber_table->position(); | |
| 2222 } | |
| 2223 | |
| 2224 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
| 2225 if (_need_verify) { | |
| 2226 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
| 2227 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
| 2228 } | |
| 2229 | |
|
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2230 // All sizing information for a Method* is finally available, now create it |
| 6934 | 2231 Method* m = Method::allocate( |
| 2232 loader_data, code_length, access_flags, linenumber_table_length, | |
| 2233 total_lvt_length, exception_table_length, checked_exceptions_length, | |
|
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|
2234 generic_signature_index, ConstMethod::NORMAL, CHECK_(nullHandle)); |
|
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2235 |
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2236 ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
| 0 | 2237 |
| 2238 // Fill in information from fixed part (access_flags already set) | |
| 2239 m->set_constants(cp()); | |
| 2240 m->set_name_index(name_index); | |
| 2241 m->set_signature_index(signature_index); | |
| 2242 #ifdef CC_INTERP | |
| 2243 // hmm is there a gc issue here?? | |
| 2244 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
| 2245 m->set_result_index(rtf.type()); | |
| 2246 #endif | |
| 2247 | |
| 2248 if (args_size >= 0) { | |
| 2249 m->set_size_of_parameters(args_size); | |
| 2250 } else { | |
| 2251 m->compute_size_of_parameters(THREAD); | |
| 2252 } | |
| 2253 #ifdef ASSERT | |
| 2254 if (args_size >= 0) { | |
| 2255 m->compute_size_of_parameters(THREAD); | |
| 2256 assert(args_size == m->size_of_parameters(), ""); | |
| 2257 } | |
| 2258 #endif | |
| 2259 | |
| 2260 // Fill in code attribute information | |
| 2261 m->set_max_stack(max_stack); | |
| 2262 m->set_max_locals(max_locals); | |
|
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2263 m->constMethod()->set_stackmap_data(stackmap_data); |
| 0 | 2264 |
| 2265 // Copy byte codes | |
|
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2266 m->set_code(code_start); |
| 0 | 2267 |
| 2268 // Copy line number table | |
| 2269 if (linenumber_table != NULL) { | |
| 2270 memcpy(m->compressed_linenumber_table(), | |
| 2271 linenumber_table->buffer(), linenumber_table_length); | |
| 2272 } | |
| 2273 | |
|
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2274 // Copy exception table |
|
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2275 if (exception_table_length > 0) { |
|
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|
2276 int size = |
|
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2277 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
|
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2278 copy_u2_with_conversion((u2*) m->exception_table_start(), |
|
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|
2279 exception_table_start, size); |
|
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|
2280 } |
|
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|
2281 |
| 0 | 2282 // Copy checked exceptions |
| 2283 if (checked_exceptions_length > 0) { | |
| 2284 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 2285 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
| 2286 } | |
| 2287 | |
| 2288 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
| 2289 * | |
| 2290 * Rules for LVT's and LVTT's are: | |
| 2291 * - There can be any number of LVT's and LVTT's. | |
| 2292 * - If there are n LVT's, it is the same as if there was just | |
| 2293 * one LVT containing all the entries from the n LVT's. | |
| 2294 * - There may be no more than one LVT entry per local variable. | |
| 2295 * Two LVT entries are 'equal' if these fields are the same: | |
| 2296 * start_pc, length, name, slot | |
| 2297 * - There may be no more than one LVTT entry per each LVT entry. | |
| 2298 * Each LVTT entry has to match some LVT entry. | |
| 2299 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
| 2300 */ | |
| 2301 if (total_lvt_length > 0) { | |
| 2302 int tbl_no, idx; | |
| 2303 | |
| 2304 promoted_flags->set_has_localvariable_table(); | |
| 2305 | |
| 2306 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
| 2307 initialize_hashtable(lvt_Hash); | |
| 2308 | |
| 2309 // To fill LocalVariableTable in | |
| 2310 Classfile_LVT_Element* cf_lvt; | |
| 2311 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
| 2312 | |
| 2313 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
| 2314 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
| 2315 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
| 2316 copy_lvt_element(&cf_lvt[idx], lvt); | |
| 2317 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
| 2318 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
| 2319 && _need_verify | |
| 2320 && _major_version >= JAVA_1_5_VERSION ) { | |
| 2321 clear_hashtable(lvt_Hash); | |
| 2322 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
| 2323 "entry for '%s' in class file %s", | |
| 2324 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
| 2325 CHECK_(nullHandle)); | |
| 2326 } | |
| 2327 } | |
| 2328 } | |
| 2329 | |
| 2330 // To merge LocalVariableTable and LocalVariableTypeTable | |
| 2331 Classfile_LVT_Element* cf_lvtt; | |
| 2332 LocalVariableTableElement lvtt_elem; | |
| 2333 | |
| 2334 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
| 2335 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
| 2336 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
| 2337 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
| 2338 int index = hash(&lvtt_elem); | |
| 2339 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
| 2340 if (entry == NULL) { | |
| 2341 if (_need_verify) { | |
| 2342 clear_hashtable(lvt_Hash); | |
| 2343 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
| 2344 "does not match any LVT entry", | |
| 2345 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
| 2346 CHECK_(nullHandle)); | |
| 2347 } | |
| 2348 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
| 2349 clear_hashtable(lvt_Hash); | |
| 2350 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
| 2351 "entry for '%s' in class file %s", | |
| 2352 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
| 2353 CHECK_(nullHandle)); | |
| 2354 } else { | |
| 2355 // to add generic signatures into LocalVariableTable | |
| 2356 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
| 2357 } | |
| 2358 } | |
| 2359 } | |
| 2360 clear_hashtable(lvt_Hash); | |
| 2361 } | |
| 2362 | |
|
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2363 if (parsed_annotations.has_any_annotations()) |
|
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|
2364 parsed_annotations.apply_to(m); |
|
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2365 *method_annotations = assemble_annotations(loader_data, |
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2366 runtime_visible_annotations, |
| 0 | 2367 runtime_visible_annotations_length, |
| 2368 runtime_invisible_annotations, | |
| 2369 runtime_invisible_annotations_length, | |
| 2370 CHECK_(nullHandle)); | |
|
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2371 *method_parameter_annotations = assemble_annotations(loader_data, |
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2372 runtime_visible_parameter_annotations, |
| 0 | 2373 runtime_visible_parameter_annotations_length, |
| 2374 runtime_invisible_parameter_annotations, | |
| 2375 runtime_invisible_parameter_annotations_length, | |
| 2376 CHECK_(nullHandle)); | |
|
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2377 *method_default_annotations = assemble_annotations(loader_data, |
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|
2378 annotation_default, |
| 0 | 2379 annotation_default_length, |
| 2380 NULL, | |
| 2381 0, | |
| 2382 CHECK_(nullHandle)); | |
|
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2383 *method_type_annotations = assemble_annotations(loader_data, |
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2384 runtime_visible_type_annotations, |
|
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2385 runtime_visible_type_annotations_length, |
|
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|
2386 runtime_invisible_type_annotations, |
|
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2387 runtime_invisible_type_annotations_length, |
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|
2388 CHECK_(nullHandle)); |
| 0 | 2389 |
|
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2390 if (name == vmSymbols::finalize_method_name() && |
|
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|
2391 signature == vmSymbols::void_method_signature()) { |
| 0 | 2392 if (m->is_empty_method()) { |
| 2393 _has_empty_finalizer = true; | |
| 2394 } else { | |
| 2395 _has_finalizer = true; | |
| 2396 } | |
| 2397 } | |
|
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2398 if (name == vmSymbols::object_initializer_name() && |
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2399 signature == vmSymbols::void_method_signature() && |
| 0 | 2400 m->is_vanilla_constructor()) { |
| 2401 _has_vanilla_constructor = true; | |
| 2402 } | |
| 2403 | |
| 2404 return m; | |
| 2405 } | |
| 2406 | |
| 2407 | |
| 2408 // The promoted_flags parameter is used to pass relevant access_flags | |
| 2409 // from the methods back up to the containing klass. These flag values | |
| 2410 // are added to klass's access_flags. | |
| 2411 | |
|
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2412 Array<Method*>* ClassFileParser::parse_methods(ClassLoaderData* loader_data, |
|
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2413 constantPoolHandle cp, |
|
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2414 bool is_interface, |
|
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2415 AccessFlags* promoted_flags, |
|
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2416 bool* has_final_method, |
|
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2417 Array<AnnotationArray*>** methods_annotations, |
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2418 Array<AnnotationArray*>** methods_parameter_annotations, |
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2419 Array<AnnotationArray*>** methods_default_annotations, |
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2420 Array<AnnotationArray*>** methods_type_annotations, |
| 6934 | 2421 bool* has_default_methods, |
|
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2422 TRAPS) { |
| 0 | 2423 ClassFileStream* cfs = stream(); |
|
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2424 AnnotationArray* method_annotations = NULL; |
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2425 AnnotationArray* method_parameter_annotations = NULL; |
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2426 AnnotationArray* method_default_annotations = NULL; |
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2427 AnnotationArray* method_type_annotations = NULL; |
|
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2428 cfs->guarantee_more(2, CHECK_NULL); // length |
| 0 | 2429 u2 length = cfs->get_u2_fast(); |
| 2430 if (length == 0) { | |
|
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2431 return Universe::the_empty_method_array(); |
| 0 | 2432 } else { |
|
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2433 // FIXME: Handle leaks at later failures. |
|
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2434 Array<Method*>* methods = MetadataFactory::new_array<Method*>(loader_data, length, NULL, CHECK_NULL); |
|
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2435 |
| 0 | 2436 HandleMark hm(THREAD); |
| 2437 for (int index = 0; index < length; index++) { | |
|
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2438 methodHandle method = parse_method(loader_data, |
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2439 cp, is_interface, |
| 0 | 2440 promoted_flags, |
| 2441 &method_annotations, | |
| 2442 &method_parameter_annotations, | |
| 2443 &method_default_annotations, | |
|
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2444 &method_type_annotations, |
|
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2445 CHECK_NULL); |
|
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2446 |
| 0 | 2447 if (method->is_final()) { |
| 2448 *has_final_method = true; | |
| 2449 } | |
| 6934 | 2450 if (is_interface && !method->is_abstract() && !method->is_static()) { |
| 2451 // default method | |
| 2452 *has_default_methods = true; | |
| 2453 } | |
|
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2454 methods->at_put(index, method()); |
|
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2455 if (*methods_annotations == NULL) { |
|
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2456 *methods_annotations = |
|
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2457 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 2458 } |
|
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2459 (*methods_annotations)->at_put(index, method_annotations); |
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2460 if (*methods_parameter_annotations == NULL) { |
|
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2461 *methods_parameter_annotations = |
|
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2462 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 2463 } |
|
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2464 (*methods_parameter_annotations)->at_put(index, method_parameter_annotations); |
|
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2465 if (*methods_default_annotations == NULL) { |
|
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2466 *methods_default_annotations = |
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2467 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 2468 } |
|
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2469 (*methods_default_annotations)->at_put(index, method_default_annotations); |
|
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|
2470 if (*methods_type_annotations == NULL) { |
|
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|
2471 *methods_type_annotations = |
|
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|
2472 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
|
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|
2473 } |
|
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|
2474 (*methods_type_annotations)->at_put(index, method_type_annotations); |
| 0 | 2475 } |
|
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|
2476 |
| 0 | 2477 if (_need_verify && length > 1) { |
| 2478 // Check duplicated methods | |
| 2479 ResourceMark rm(THREAD); | |
| 2480 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2481 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 2482 initialize_hashtable(names_and_sigs); | |
| 2483 bool dup = false; | |
| 2484 { | |
| 2485 debug_only(No_Safepoint_Verifier nsv;) | |
| 2486 for (int i = 0; i < length; i++) { | |
|
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2487 Method* m = methods->at(i); |
| 0 | 2488 // If no duplicates, add name/signature in hashtable names_and_sigs. |
| 2489 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
| 2490 dup = true; | |
| 2491 break; | |
| 2492 } | |
| 2493 } | |
| 2494 } | |
| 2495 if (dup) { | |
| 2496 classfile_parse_error("Duplicate method name&signature in class file %s", | |
|
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|
2497 CHECK_NULL); |
| 0 | 2498 } |
| 2499 } | |
| 2500 return methods; | |
| 2501 } | |
| 2502 } | |
| 2503 | |
| 2504 | |
|
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2505 Array<int>* ClassFileParser::sort_methods(ClassLoaderData* loader_data, |
|
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2506 Array<Method*>* methods, |
|
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2507 Array<AnnotationArray*>* methods_annotations, |
|
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2508 Array<AnnotationArray*>* methods_parameter_annotations, |
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2509 Array<AnnotationArray*>* methods_default_annotations, |
|
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|
2510 Array<AnnotationArray*>* methods_type_annotations, |
| 0 | 2511 TRAPS) { |
|
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|
2512 int length = methods->length(); |
|
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|
2513 // If JVMTI original method ordering or sharing is enabled we have to |
| 0 | 2514 // remember the original class file ordering. |
|
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2515 // We temporarily use the vtable_index field in the Method* to store the |
| 0 | 2516 // class file index, so we can read in after calling qsort. |
|
3245
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|
2517 // Put the method ordering in the shared archive. |
|
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|
2518 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
| 0 | 2519 for (int index = 0; index < length; index++) { |
|
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|
2520 Method* m = methods->at(index); |
| 0 | 2521 assert(!m->valid_vtable_index(), "vtable index should not be set"); |
| 2522 m->set_vtable_index(index); | |
| 2523 } | |
| 2524 } | |
| 2525 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
|
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|
2526 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
|
6831
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|
2527 Method::sort_methods(methods, methods_annotations, |
|
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|
2528 methods_parameter_annotations, |
|
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|
2529 methods_default_annotations, |
|
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|
2530 methods_type_annotations); |
| 0 | 2531 |
|
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|
2532 // If JVMTI original method ordering or sharing is enabled construct int |
|
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|
2533 // array remembering the original ordering |
|
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|
2534 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
|
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|
2535 Array<int>* method_ordering = MetadataFactory::new_array<int>(loader_data, length, CHECK_NULL); |
| 0 | 2536 for (int index = 0; index < length; index++) { |
|
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|
2537 Method* m = methods->at(index); |
| 0 | 2538 int old_index = m->vtable_index(); |
| 2539 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
|
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|
2540 method_ordering->at_put(index, old_index); |
|
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|
2541 m->set_vtable_index(Method::invalid_vtable_index); |
| 0 | 2542 } |
| 2543 return method_ordering; | |
| 2544 } else { | |
|
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|
2545 return Universe::the_empty_int_array(); |
| 0 | 2546 } |
| 2547 } | |
| 2548 | |
| 2549 | |
|
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|
2550 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS) { |
| 0 | 2551 ClassFileStream* cfs = stream(); |
| 2552 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
| 2553 u2 sourcefile_index = cfs->get_u2_fast(); | |
| 2554 check_property( | |
| 2555 valid_cp_range(sourcefile_index, cp->length()) && | |
| 2556 cp->tag_at(sourcefile_index).is_utf8(), | |
| 2557 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
| 2558 sourcefile_index, CHECK); | |
|
6222
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|
2559 set_class_sourcefile(cp->symbol_at(sourcefile_index)); |
| 0 | 2560 } |
| 2561 | |
| 2562 | |
| 2563 | |
| 2564 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
| 2565 int length, TRAPS) { | |
| 2566 ClassFileStream* cfs = stream(); | |
| 2567 u1* sde_buffer = cfs->get_u1_buffer(); | |
| 2568 assert(sde_buffer != NULL, "null sde buffer"); | |
| 2569 | |
| 2570 // Don't bother storing it if there is no way to retrieve it | |
| 2571 if (JvmtiExport::can_get_source_debug_extension()) { | |
| 6226 | 2572 assert((length+1) > length, "Overflow checking"); |
| 2573 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
| 2574 for (int i = 0; i < length; i++) { | |
| 2575 sde[i] = sde_buffer[i]; | |
| 2576 } | |
| 2577 sde[length] = '\0'; | |
| 2578 set_class_sde_buffer((char*)sde, length); | |
| 0 | 2579 } |
| 2580 // Got utf8 string, set stream position forward | |
| 2581 cfs->skip_u1(length, CHECK); | |
| 2582 } | |
| 2583 | |
| 2584 | |
| 2585 // Inner classes can be static, private or protected (classic VM does this) | |
| 2586 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
| 2587 | |
| 2588 // Return number of classes in the inner classes attribute table | |
|
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|
2589 u2 ClassFileParser::parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
|
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|
2590 u1* inner_classes_attribute_start, |
|
5967
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|
2591 bool parsed_enclosingmethod_attribute, |
|
f7c4174b33ba
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|
2592 u2 enclosing_method_class_index, |
|
f7c4174b33ba
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|
2593 u2 enclosing_method_method_index, |
|
f7c4174b33ba
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|
2594 constantPoolHandle cp, |
|
6222
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|
2595 TRAPS) { |
| 0 | 2596 ClassFileStream* cfs = stream(); |
|
5967
f7c4174b33ba
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|
2597 u1* current_mark = cfs->current(); |
|
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|
2598 u2 length = 0; |
|
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|
2599 if (inner_classes_attribute_start != NULL) { |
|
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|
2600 cfs->set_current(inner_classes_attribute_start); |
|
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|
2601 cfs->guarantee_more(2, CHECK_0); // length |
|
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|
2602 length = cfs->get_u2_fast(); |
|
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|
2603 } |
|
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|
2604 |
|
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|
2605 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
|
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|
2606 // method data: |
|
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|
2607 // [inner_class_info_index, |
|
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|
2608 // outer_class_info_index, |
|
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|
2609 // inner_name_index, |
|
f7c4174b33ba
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|
2610 // inner_class_access_flags, |
|
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|
2611 // ... |
|
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|
2612 // enclosing_method_class_index, |
|
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|
2613 // enclosing_method_method_index] |
|
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jiangli
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|
2614 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
|
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|
2615 // FIXME: Will leak on exceptions. |
|
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|
2616 Array<u2>* inner_classes = MetadataFactory::new_array<u2>(loader_data, size, CHECK_0); |
| 0 | 2617 int index = 0; |
| 2618 int cp_size = cp->length(); | |
| 2619 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
| 2620 for (int n = 0; n < length; n++) { | |
| 2621 // Inner class index | |
| 2622 u2 inner_class_info_index = cfs->get_u2_fast(); | |
| 2623 check_property( | |
| 2624 inner_class_info_index == 0 || | |
| 2625 (valid_cp_range(inner_class_info_index, cp_size) && | |
|
431
a45484ea312d
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196
diff
changeset
|
2626 is_klass_reference(cp, inner_class_info_index)), |
| 0 | 2627 "inner_class_info_index %u has bad constant type in class file %s", |
| 2628 inner_class_info_index, CHECK_0); | |
| 2629 // Outer class index | |
| 2630 u2 outer_class_info_index = cfs->get_u2_fast(); | |
| 2631 check_property( | |
| 2632 outer_class_info_index == 0 || | |
| 2633 (valid_cp_range(outer_class_info_index, cp_size) && | |
|
431
a45484ea312d
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|
2634 is_klass_reference(cp, outer_class_info_index)), |
| 0 | 2635 "outer_class_info_index %u has bad constant type in class file %s", |
| 2636 outer_class_info_index, CHECK_0); | |
| 2637 // Inner class name | |
| 2638 u2 inner_name_index = cfs->get_u2_fast(); | |
| 2639 check_property( | |
| 2640 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
| 2641 cp->tag_at(inner_name_index).is_utf8()), | |
| 2642 "inner_name_index %u has bad constant type in class file %s", | |
| 2643 inner_name_index, CHECK_0); | |
| 2644 if (_need_verify) { | |
| 2645 guarantee_property(inner_class_info_index != outer_class_info_index, | |
| 2646 "Class is both outer and inner class in class file %s", CHECK_0); | |
| 2647 } | |
| 2648 // Access flags | |
| 2649 AccessFlags inner_access_flags; | |
| 2650 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
| 2651 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
| 2652 // Set abstract bit for old class files for backward compatibility | |
| 2653 flags |= JVM_ACC_ABSTRACT; | |
| 2654 } | |
| 2655 verify_legal_class_modifiers(flags, CHECK_0); | |
| 2656 inner_access_flags.set_flags(flags); | |
| 2657 | |
|
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2658 inner_classes->at_put(index++, inner_class_info_index); |
|
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2659 inner_classes->at_put(index++, outer_class_info_index); |
|
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|
2660 inner_classes->at_put(index++, inner_name_index); |
|
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|
2661 inner_classes->at_put(index++, inner_access_flags.as_short()); |
| 0 | 2662 } |
| 2663 | |
| 2664 // 4347400: make sure there's no duplicate entry in the classes array | |
| 2665 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
|
5967
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|
2666 for(int i = 0; i < length * 4; i += 4) { |
|
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|
2667 for(int j = i + 4; j < length * 4; j += 4) { |
|
6725
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2668 guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
|
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|
2669 inner_classes->at(i+1) != inner_classes->at(j+1) || |
|
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|
2670 inner_classes->at(i+2) != inner_classes->at(j+2) || |
|
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|
2671 inner_classes->at(i+3) != inner_classes->at(j+3)), |
| 0 | 2672 "Duplicate entry in InnerClasses in class file %s", |
| 2673 CHECK_0); | |
| 2674 } | |
| 2675 } | |
| 2676 } | |
| 2677 | |
|
5967
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|
2678 // Set EnclosingMethod class and method indexes. |
|
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|
2679 if (parsed_enclosingmethod_attribute) { |
|
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|
2680 inner_classes->at_put(index++, enclosing_method_class_index); |
|
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|
2681 inner_classes->at_put(index++, enclosing_method_method_index); |
|
5967
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|
2682 } |
|
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|
2683 assert(index == size, "wrong size"); |
|
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|
2684 |
|
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|
2685 // Update InstanceKlass with inner class info. |
|
6222
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|
2686 set_class_inner_classes(inner_classes); |
|
5967
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|
2687 |
|
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|
2688 // Restore buffer's current position. |
|
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|
2689 cfs->set_current(current_mark); |
|
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|
2690 |
| 0 | 2691 return length; |
| 2692 } | |
| 2693 | |
|
6222
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|
2694 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS) { |
|
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|
2695 set_class_synthetic_flag(true); |
| 0 | 2696 } |
| 2697 | |
|
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|
2698 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS) { |
| 0 | 2699 ClassFileStream* cfs = stream(); |
| 2700 u2 signature_index = cfs->get_u2(CHECK); | |
| 2701 check_property( | |
| 2702 valid_cp_range(signature_index, cp->length()) && | |
| 2703 cp->tag_at(signature_index).is_utf8(), | |
| 2704 "Invalid constant pool index %u in Signature attribute in class file %s", | |
| 2705 signature_index, CHECK); | |
|
6222
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|
2706 set_class_generic_signature(cp->symbol_at(signature_index)); |
| 0 | 2707 } |
| 2708 | |
|
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|
2709 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, |
|
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|
2710 constantPoolHandle cp, |
|
2011
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|
2711 u4 attribute_byte_length, TRAPS) { |
|
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diff
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|
2712 ClassFileStream* cfs = stream(); |
|
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|
2713 u1* current_start = cfs->current(); |
|
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|
2714 |
|
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diff
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|
2715 cfs->guarantee_more(2, CHECK); // length |
|
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diff
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|
2716 int attribute_array_length = cfs->get_u2_fast(); |
|
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|
2717 |
|
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diff
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|
2718 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
|
dad31fc330cd
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diff
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|
2719 "Short length on BootstrapMethods in class file %s", |
|
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diff
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|
2720 CHECK); |
|
dad31fc330cd
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diff
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|
2721 |
|
dad31fc330cd
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diff
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|
2722 // The attribute contains a counted array of counted tuples of shorts, |
|
dad31fc330cd
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diff
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|
2723 // represending bootstrap specifiers: |
|
dad31fc330cd
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diff
changeset
|
2724 // length*{bootstrap_method_index, argument_count*{argument_index}} |
|
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parents:
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diff
changeset
|
2725 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
|
dad31fc330cd
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1972
diff
changeset
|
2726 // operand_count = number of shorts in attr, except for leading length |
|
dad31fc330cd
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diff
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|
2727 |
|
dad31fc330cd
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parents:
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diff
changeset
|
2728 // The attribute is copied into a short[] array. |
|
dad31fc330cd
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parents:
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diff
changeset
|
2729 // The array begins with a series of short[2] pairs, one for each tuple. |
|
dad31fc330cd
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diff
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|
2730 int index_size = (attribute_array_length * 2); |
|
dad31fc330cd
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diff
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|
2731 |
|
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|
2732 Array<u2>* operands = MetadataFactory::new_array<u2>(loader_data, index_size + operand_count, CHECK); |
|
2011
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|
2733 |
|
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diff
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|
2734 int operand_fill_index = index_size; |
|
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diff
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|
2735 int cp_size = cp->length(); |
|
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diff
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|
2736 |
|
dad31fc330cd
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parents:
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diff
changeset
|
2737 for (int n = 0; n < attribute_array_length; n++) { |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2738 // Store a 32-bit offset into the header of the operand array. |
|
6725
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|
2739 ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
|
2011
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diff
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|
2740 |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2741 // Read a bootstrap specifier. |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2742 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2743 u2 bootstrap_method_index = cfs->get_u2_fast(); |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2744 u2 argument_count = cfs->get_u2_fast(); |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2745 check_property( |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2746 valid_cp_range(bootstrap_method_index, cp_size) && |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2747 cp->tag_at(bootstrap_method_index).is_method_handle(), |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2748 "bootstrap_method_index %u has bad constant type in class file %s", |
| 2085 | 2749 bootstrap_method_index, |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2750 CHECK); |
|
6725
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changeset
|
2751 operands->at_put(operand_fill_index++, bootstrap_method_index); |
|
da91efe96a93
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|
2752 operands->at_put(operand_fill_index++, argument_count); |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2753 |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2754 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2755 for (int j = 0; j < argument_count; j++) { |
| 2085 | 2756 u2 argument_index = cfs->get_u2_fast(); |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2757 check_property( |
| 2085 | 2758 valid_cp_range(argument_index, cp_size) && |
| 2759 cp->tag_at(argument_index).is_loadable_constant(), | |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2760 "argument_index %u has bad constant type in class file %s", |
| 2085 | 2761 argument_index, |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2762 CHECK); |
|
6725
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changeset
|
2763 operands->at_put(operand_fill_index++, argument_index); |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2764 } |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2765 } |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2766 |
|
6725
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changeset
|
2767 assert(operand_fill_index == operands->length(), "exact fill"); |
|
da91efe96a93
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6266
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changeset
|
2768 assert(ConstantPool::operand_array_length(operands) == attribute_array_length, "correct decode"); |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2769 |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2770 u1* current_end = cfs->current(); |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2771 guarantee_property(current_end == current_start + attribute_byte_length, |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2772 "Bad length on BootstrapMethods in class file %s", |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2773 CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2774 |
|
6725
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changeset
|
2775 cp->set_operands(operands); |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2776 } |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2777 |
|
6725
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changeset
|
2778 void ClassFileParser::parse_classfile_attributes(ClassLoaderData* loader_data, |
|
da91efe96a93
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6266
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changeset
|
2779 constantPoolHandle cp, |
|
6222
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6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
2780 ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2781 TRAPS) { |
| 0 | 2782 ClassFileStream* cfs = stream(); |
| 2783 // Set inner classes attribute to default sentinel | |
|
6725
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changeset
|
2784 set_class_inner_classes(Universe::the_empty_short_array()); |
| 0 | 2785 cfs->guarantee_more(2, CHECK); // attributes_count |
| 2786 u2 attributes_count = cfs->get_u2_fast(); | |
| 2787 bool parsed_sourcefile_attribute = false; | |
| 2788 bool parsed_innerclasses_attribute = false; | |
| 2789 bool parsed_enclosingmethod_attribute = false; | |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2790 bool parsed_bootstrap_methods_attribute = false; |
| 0 | 2791 u1* runtime_visible_annotations = NULL; |
| 2792 int runtime_visible_annotations_length = 0; | |
| 2793 u1* runtime_invisible_annotations = NULL; | |
| 2794 int runtime_invisible_annotations_length = 0; | |
|
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2795 u1* runtime_visible_type_annotations = NULL; |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2796 int runtime_visible_type_annotations_length = 0; |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2797 u1* runtime_invisible_type_annotations = NULL; |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2798 int runtime_invisible_type_annotations_length = 0; |
|
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4755
diff
changeset
|
2799 u1* inner_classes_attribute_start = NULL; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2800 u4 inner_classes_attribute_length = 0; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2801 u2 enclosing_method_class_index = 0; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2802 u2 enclosing_method_method_index = 0; |
| 0 | 2803 // Iterate over attributes |
| 2804 while (attributes_count--) { | |
| 2805 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
| 2806 u2 attribute_name_index = cfs->get_u2_fast(); | |
| 2807 u4 attribute_length = cfs->get_u4_fast(); | |
| 2808 check_property( | |
| 2809 valid_cp_range(attribute_name_index, cp->length()) && | |
| 2810 cp->tag_at(attribute_name_index).is_utf8(), | |
| 2811 "Attribute name has bad constant pool index %u in class file %s", | |
| 2812 attribute_name_index, CHECK); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2813 Symbol* tag = cp->symbol_at(attribute_name_index); |
| 0 | 2814 if (tag == vmSymbols::tag_source_file()) { |
| 2815 // Check for SourceFile tag | |
| 2816 if (_need_verify) { | |
| 2817 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
| 2818 } | |
| 2819 if (parsed_sourcefile_attribute) { | |
| 2820 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
| 2821 } else { | |
| 2822 parsed_sourcefile_attribute = true; | |
| 2823 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2824 parse_classfile_sourcefile_attribute(cp, CHECK); |
| 0 | 2825 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
| 2826 // Check for SourceDebugExtension tag | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2827 parse_classfile_source_debug_extension_attribute(cp, (int)attribute_length, CHECK); |
| 0 | 2828 } else if (tag == vmSymbols::tag_inner_classes()) { |
| 2829 // Check for InnerClasses tag | |
| 2830 if (parsed_innerclasses_attribute) { | |
| 2831 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
| 2832 } else { | |
| 2833 parsed_innerclasses_attribute = true; | |
| 2834 } | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2835 inner_classes_attribute_start = cfs->get_u1_buffer(); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2836 inner_classes_attribute_length = attribute_length; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2837 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
| 0 | 2838 } else if (tag == vmSymbols::tag_synthetic()) { |
| 2839 // Check for Synthetic tag | |
| 2840 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
| 2841 if (attribute_length != 0) { | |
| 2842 classfile_parse_error( | |
| 2843 "Invalid Synthetic classfile attribute length %u in class file %s", | |
| 2844 attribute_length, CHECK); | |
| 2845 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2846 parse_classfile_synthetic_attribute(cp, CHECK); |
| 0 | 2847 } else if (tag == vmSymbols::tag_deprecated()) { |
| 2848 // Check for Deprecatd tag - 4276120 | |
| 2849 if (attribute_length != 0) { | |
| 2850 classfile_parse_error( | |
| 2851 "Invalid Deprecated classfile attribute length %u in class file %s", | |
| 2852 attribute_length, CHECK); | |
| 2853 } | |
| 2854 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 2855 if (tag == vmSymbols::tag_signature()) { | |
| 2856 if (attribute_length != 2) { | |
| 2857 classfile_parse_error( | |
| 2858 "Wrong Signature attribute length %u in class file %s", | |
| 2859 attribute_length, CHECK); | |
| 2860 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2861 parse_classfile_signature_attribute(cp, CHECK); |
| 0 | 2862 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
| 2863 runtime_visible_annotations_length = attribute_length; | |
| 2864 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 2865 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2866 parse_annotations(runtime_visible_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2867 runtime_visible_annotations_length, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2868 cp, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2869 parsed_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2870 CHECK); |
| 0 | 2871 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
| 2872 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 2873 runtime_invisible_annotations_length = attribute_length; | |
| 2874 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 2875 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 2876 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
| 2877 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
| 2878 if (parsed_enclosingmethod_attribute) { | |
| 2879 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
| 2880 } else { | |
| 2881 parsed_enclosingmethod_attribute = true; | |
| 2882 } | |
| 2883 cfs->guarantee_more(4, CHECK); // class_index, method_index | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2884 enclosing_method_class_index = cfs->get_u2_fast(); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2885 enclosing_method_method_index = cfs->get_u2_fast(); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2886 if (enclosing_method_class_index == 0) { |
| 0 | 2887 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
| 2888 } | |
| 2889 // Validate the constant pool indices and types | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2890 if (!cp->is_within_bounds(enclosing_method_class_index) || |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2891 !is_klass_reference(cp, enclosing_method_class_index)) { |
| 0 | 2892 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
| 2893 } | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2894 if (enclosing_method_method_index != 0 && |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2895 (!cp->is_within_bounds(enclosing_method_method_index) || |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2896 !cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
| 0 | 2897 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
| 2898 } | |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2899 } else if (tag == vmSymbols::tag_bootstrap_methods() && |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2900 _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2901 if (parsed_bootstrap_methods_attribute) |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2902 classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2903 parsed_bootstrap_methods_attribute = true; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2904 parse_classfile_bootstrap_methods_attribute(loader_data, cp, attribute_length, CHECK); |
|
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2905 } else if (tag == vmSymbols::tag_runtime_visible_type_annotations()) { |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2906 runtime_visible_type_annotations_length = attribute_length; |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2907 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2908 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2909 // No need for the VM to parse Type annotations |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2910 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2911 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_type_annotations()) { |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2912 runtime_invisible_type_annotations_length = attribute_length; |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2913 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2914 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2915 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
| 0 | 2916 } else { |
| 2917 // Unknown attribute | |
| 2918 cfs->skip_u1(attribute_length, CHECK); | |
| 2919 } | |
| 2920 } else { | |
| 2921 // Unknown attribute | |
| 2922 cfs->skip_u1(attribute_length, CHECK); | |
| 2923 } | |
| 2924 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2925 AnnotationArray* annotations = assemble_annotations(loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2926 runtime_visible_annotations, |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2927 runtime_visible_annotations_length, |
|
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2928 runtime_invisible_annotations, |
|
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2929 runtime_invisible_annotations_length, |
|
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2930 CHECK); |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2931 set_class_annotations(annotations); |
|
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2932 AnnotationArray* type_annotations = assemble_annotations(loader_data, |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2933 runtime_visible_type_annotations, |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2934 runtime_visible_type_annotations_length, |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2935 runtime_invisible_type_annotations, |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2936 runtime_invisible_type_annotations_length, |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2937 CHECK); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2938 set_class_type_annotations(type_annotations); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2939 |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2940 if (parsed_innerclasses_attribute || parsed_enclosingmethod_attribute) { |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2941 u2 num_of_classes = parse_classfile_inner_classes_attribute( |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2942 loader_data, |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2943 inner_classes_attribute_start, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2944 parsed_innerclasses_attribute, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2945 enclosing_method_class_index, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2946 enclosing_method_method_index, |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2947 cp, CHECK); |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2948 if (parsed_innerclasses_attribute &&_need_verify && _major_version >= JAVA_1_5_VERSION) { |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2949 guarantee_property( |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2950 inner_classes_attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2951 "Wrong InnerClasses attribute length in class file %s", CHECK); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2952 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2953 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2954 |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2955 if (_max_bootstrap_specifier_index >= 0) { |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2956 guarantee_property(parsed_bootstrap_methods_attribute, |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2957 "Missing BootstrapMethods attribute in class file %s", CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2958 } |
| 0 | 2959 } |
| 2960 | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2961 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2962 if (_synthetic_flag) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2963 k->set_is_synthetic(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2964 if (_sourcefile != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2965 _sourcefile->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2966 k->set_source_file_name(_sourcefile); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2967 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2968 if (_generic_signature != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2969 _generic_signature->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2970 k->set_generic_signature(_generic_signature); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2971 } |
| 6226 | 2972 if (_sde_buffer != NULL) { |
| 2973 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
| 2974 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2975 k->set_inner_classes(_inner_classes); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2976 if (_annotations != NULL) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2977 k->annotations()->set_class_annotations(_annotations); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2978 } |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2979 } |
| 0 | 2980 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2981 AnnotationArray* ClassFileParser::assemble_annotations(ClassLoaderData* loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2982 u1* runtime_visible_annotations, |
|
6831
d8ce2825b193
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|
2983 int runtime_visible_annotations_length, |
|
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|
2984 u1* runtime_invisible_annotations, |
|
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coleenp
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6735
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|
2985 int runtime_invisible_annotations_length, TRAPS) { |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2986 AnnotationArray* annotations = NULL; |
| 0 | 2987 if (runtime_visible_annotations != NULL || |
| 2988 runtime_invisible_annotations != NULL) { | |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2989 annotations = MetadataFactory::new_array<u1>(loader_data, |
|
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|
2990 runtime_visible_annotations_length + |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2991 runtime_invisible_annotations_length, |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2992 CHECK_(annotations)); |
| 0 | 2993 if (runtime_visible_annotations != NULL) { |
|
6725
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|
2994 for (int i = 0; i < runtime_visible_annotations_length; i++) { |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2995 annotations->at_put(i, runtime_visible_annotations[i]); |
|
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|
2996 } |
| 0 | 2997 } |
| 2998 if (runtime_invisible_annotations != NULL) { | |
|
6725
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|
2999 for (int i = 0; i < runtime_invisible_annotations_length; i++) { |
|
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|
3000 int append = runtime_visible_annotations_length+i; |
|
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|
3001 annotations->at_put(append, runtime_invisible_annotations[i]); |
|
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|
3002 } |
| 0 | 3003 } |
| 3004 } | |
| 3005 return annotations; | |
| 3006 } | |
| 3007 | |
| 3008 | |
| 6934 | 3009 #ifndef PRODUCT |
| 3010 static void parseAndPrintGenericSignatures( | |
| 3011 instanceKlassHandle this_klass, TRAPS) { | |
| 3012 assert(ParseAllGenericSignatures == true, "Shouldn't call otherwise"); | |
| 3013 ResourceMark rm; | |
| 3014 | |
| 3015 if (this_klass->generic_signature() != NULL) { | |
| 3016 using namespace generic; | |
| 3017 ClassDescriptor* spec = ClassDescriptor::parse_generic_signature(this_klass(), CHECK); | |
| 3018 | |
| 3019 tty->print_cr("Parsing %s", this_klass->generic_signature()->as_C_string()); | |
| 3020 spec->print_on(tty); | |
| 3021 | |
| 3022 for (int i = 0; i < this_klass->methods()->length(); ++i) { | |
| 3023 Method* m = this_klass->methods()->at(i); | |
| 3024 MethodDescriptor* method_spec = MethodDescriptor::parse_generic_signature(m, spec); | |
| 3025 Symbol* sig = m->generic_signature(); | |
| 3026 if (sig == NULL) { | |
| 3027 sig = m->signature(); | |
| 3028 } | |
| 3029 tty->print_cr("Parsing %s", sig->as_C_string()); | |
| 3030 method_spec->print_on(tty); | |
| 3031 } | |
| 3032 } | |
| 3033 } | |
| 3034 #endif // ndef PRODUCT | |
| 3035 | |
| 3036 | |
|
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|
3037 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
|
7185
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|
3038 ClassLoaderData* loader_data, |
| 0 | 3039 Handle protection_domain, |
| 710 | 3040 KlassHandle host_klass, |
|
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6653858: dynamic languages need to be able to load anonymous classes
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|
3041 GrowableArray<Handle>* cp_patches, |
|
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|
3042 TempNewSymbol& parsed_name, |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
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diff
changeset
|
3043 bool verify, |
| 0 | 3044 TRAPS) { |
|
4731
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7122253: Instrumentation.retransformClasses() leaks class bytes
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|
3045 // When a retransformable agent is attached, JVMTI caches the |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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|
3046 // class bytes that existed before the first retransformation. |
|
4ceaf61479fc
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diff
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|
3047 // If RedefineClasses() was used before the retransformable |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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diff
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|
3048 // agent attached, then the cached class bytes may not be the |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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diff
changeset
|
3049 // original class bytes. |
| 0 | 3050 unsigned char *cached_class_file_bytes = NULL; |
| 3051 jint cached_class_file_length; | |
|
7185
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|
3052 Handle class_loader(THREAD, loader_data->class_loader()); |
| 6934 | 3053 bool has_default_methods = false; |
| 3054 ResourceMark rm(THREAD); | |
| 0 | 3055 |
| 3056 ClassFileStream* cfs = stream(); | |
| 3057 // Timing | |
|
875
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|
3058 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
6a93908f268f
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diff
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|
3059 JavaThread* jt = (JavaThread*) THREAD; |
|
6a93908f268f
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diff
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|
3060 |
|
6a93908f268f
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diff
changeset
|
3061 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
|
6a93908f268f
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|
3062 ClassLoader::perf_class_parse_selftime(), |
|
6a93908f268f
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diff
changeset
|
3063 NULL, |
|
6a93908f268f
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diff
changeset
|
3064 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
6a93908f268f
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diff
changeset
|
3065 jt->get_thread_stat()->perf_timers_addr(), |
|
6a93908f268f
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diff
changeset
|
3066 PerfClassTraceTime::PARSE_CLASS); |
| 0 | 3067 |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
3068 init_parsed_class_attributes(); |
| 0 | 3069 |
| 3070 if (JvmtiExport::should_post_class_file_load_hook()) { | |
|
4751
5b58979183f9
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diff
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|
3071 // Get the cached class file bytes (if any) from the class that |
|
5b58979183f9
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dcubed
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diff
changeset
|
3072 // is being redefined or retransformed. We use jvmti_thread_state() |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3073 // instead of JvmtiThreadState::state_for(jt) so we don't allocate |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3074 // a JvmtiThreadState any earlier than necessary. This will help |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3075 // avoid the bug described by 7126851. |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3076 JvmtiThreadState *state = jt->jvmti_thread_state(); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3077 if (state != NULL) { |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3078 KlassHandle *h_class_being_redefined = |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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changeset
|
3079 state->get_class_being_redefined(); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
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4731
diff
changeset
|
3080 if (h_class_being_redefined != NULL) { |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3081 instanceKlassHandle ikh_class_being_redefined = |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3082 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
|
5b58979183f9
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dcubed
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|
3083 cached_class_file_bytes = |
|
5b58979183f9
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changeset
|
3084 ikh_class_being_redefined->get_cached_class_file_bytes(); |
|
5b58979183f9
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dcubed
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|
3085 cached_class_file_length = |
|
5b58979183f9
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changeset
|
3086 ikh_class_being_redefined->get_cached_class_file_len(); |
|
5b58979183f9
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dcubed
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diff
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|
3087 } |
|
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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3938
diff
changeset
|
3088 } |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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|
3089 |
| 0 | 3090 unsigned char* ptr = cfs->buffer(); |
| 3091 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
| 3092 | |
|
7185
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6983
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|
3093 JvmtiExport::post_class_file_load_hook(name, class_loader(), protection_domain, |
| 0 | 3094 &ptr, &end_ptr, |
| 3095 &cached_class_file_bytes, | |
| 3096 &cached_class_file_length); | |
| 3097 | |
| 3098 if (ptr != cfs->buffer()) { | |
| 3099 // JVMTI agent has modified class file data. | |
| 3100 // Set new class file stream using JVMTI agent modified | |
| 3101 // class file data. | |
| 3102 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
| 3103 set_stream(cfs); | |
| 3104 } | |
| 3105 } | |
| 3106 | |
| 710 | 3107 _host_klass = host_klass; |
|
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|
3108 _cp_patches = cp_patches; |
| 0 | 3109 |
| 3110 instanceKlassHandle nullHandle; | |
| 3111 | |
| 3112 // Figure out whether we can skip format checking (matching classic VM behavior) | |
|
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ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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|
3113 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
| 0 | 3114 |
| 3115 // Set the verify flag in stream | |
| 3116 cfs->set_verify(_need_verify); | |
| 3117 | |
| 3118 // Save the class file name for easier error message printing. | |
|
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|
3119 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
| 0 | 3120 |
| 3121 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
| 3122 // Magic value | |
| 3123 u4 magic = cfs->get_u4_fast(); | |
| 3124 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
| 3125 "Incompatible magic value %u in class file %s", | |
| 3126 magic, CHECK_(nullHandle)); | |
| 3127 | |
| 3128 // Version numbers | |
| 3129 u2 minor_version = cfs->get_u2_fast(); | |
| 3130 u2 major_version = cfs->get_u2_fast(); | |
| 3131 | |
| 3132 // Check version numbers - we check this even with verifier off | |
| 3133 if (!is_supported_version(major_version, minor_version)) { | |
|
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|
3134 if (name == NULL) { |
| 0 | 3135 Exceptions::fthrow( |
| 3136 THREAD_AND_LOCATION, | |
|
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|
3137 vmSymbols::java_lang_UnsupportedClassVersionError(), |
| 0 | 3138 "Unsupported major.minor version %u.%u", |
| 3139 major_version, | |
| 3140 minor_version); | |
| 3141 } else { | |
| 3142 ResourceMark rm(THREAD); | |
| 3143 Exceptions::fthrow( | |
| 3144 THREAD_AND_LOCATION, | |
|
2177
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|
3145 vmSymbols::java_lang_UnsupportedClassVersionError(), |
| 0 | 3146 "%s : Unsupported major.minor version %u.%u", |
| 3147 name->as_C_string(), | |
| 3148 major_version, | |
| 3149 minor_version); | |
| 3150 } | |
| 3151 return nullHandle; | |
| 3152 } | |
| 3153 | |
| 3154 _major_version = major_version; | |
| 3155 _minor_version = minor_version; | |
| 3156 | |
| 3157 | |
| 3158 // Check if verification needs to be relaxed for this class file | |
| 3159 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
| 3160 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
| 3161 | |
| 3162 // Constant pool | |
|
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|
3163 constantPoolHandle cp = parse_constant_pool(loader_data, CHECK_(nullHandle)); |
|
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|
3164 ConstantPoolCleaner error_handler(cp); // set constant pool to be cleaned up. |
|
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|
3165 |
| 0 | 3166 int cp_size = cp->length(); |
| 3167 | |
| 3168 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
| 3169 | |
| 3170 // Access flags | |
| 3171 AccessFlags access_flags; | |
| 3172 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
| 3173 | |
| 3174 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
| 3175 // Set abstract bit for old class files for backward compatibility | |
| 3176 flags |= JVM_ACC_ABSTRACT; | |
| 3177 } | |
| 3178 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
| 3179 access_flags.set_flags(flags); | |
| 3180 | |
| 3181 // This class and superclass | |
| 3182 instanceKlassHandle super_klass; | |
| 3183 u2 this_class_index = cfs->get_u2_fast(); | |
| 3184 check_property( | |
| 3185 valid_cp_range(this_class_index, cp_size) && | |
| 3186 cp->tag_at(this_class_index).is_unresolved_klass(), | |
| 3187 "Invalid this class index %u in constant pool in class file %s", | |
| 3188 this_class_index, CHECK_(nullHandle)); | |
| 3189 | |
|
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|
3190 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
|
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6990754: Use native memory and reference counting to implement SymbolTable
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2085
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|
3191 assert(class_name != NULL, "class_name can't be null"); |
| 0 | 3192 |
| 3193 // It's important to set parsed_name *before* resolving the super class. | |
| 3194 // (it's used for cleanup by the caller if parsing fails) | |
| 3195 parsed_name = class_name; | |
|
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|
3196 // parsed_name is returned and can be used if there's an error, so add to |
|
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|
3197 // its reference count. Caller will decrement the refcount. |
|
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2085
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changeset
|
3198 parsed_name->increment_refcount(); |
| 0 | 3199 |
| 3200 // Update _class_name which could be null previously to be class_name | |
| 3201 _class_name = class_name; | |
| 3202 | |
| 3203 // Don't need to check whether this class name is legal or not. | |
| 3204 // It has been checked when constant pool is parsed. | |
| 3205 // However, make sure it is not an array type. | |
| 3206 if (_need_verify) { | |
| 3207 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
| 3208 "Bad class name in class file %s", | |
| 3209 CHECK_(nullHandle)); | |
| 3210 } | |
| 3211 | |
|
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|
3212 Klass* preserve_this_klass; // for storing result across HandleMark |
| 0 | 3213 |
| 3214 // release all handles when parsing is done | |
| 3215 { HandleMark hm(THREAD); | |
| 3216 | |
| 3217 // Checks if name in class file matches requested name | |
|
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|
3218 if (name != NULL && class_name != name) { |
| 0 | 3219 ResourceMark rm(THREAD); |
| 3220 Exceptions::fthrow( | |
| 3221 THREAD_AND_LOCATION, | |
|
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|
3222 vmSymbols::java_lang_NoClassDefFoundError(), |
| 0 | 3223 "%s (wrong name: %s)", |
| 3224 name->as_C_string(), | |
| 3225 class_name->as_C_string() | |
| 3226 ); | |
| 3227 return nullHandle; | |
| 3228 } | |
| 3229 | |
| 3230 if (TraceClassLoadingPreorder) { | |
|
2177
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|
3231 tty->print("[Loading %s", name->as_klass_external_name()); |
| 0 | 3232 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
| 3233 tty->print_cr("]"); | |
| 3234 } | |
| 3235 | |
| 3236 u2 super_class_index = cfs->get_u2_fast(); | |
| 3237 if (super_class_index == 0) { | |
|
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changeset
|
3238 check_property(class_name == vmSymbols::java_lang_Object(), |
| 0 | 3239 "Invalid superclass index %u in class file %s", |
| 3240 super_class_index, | |
| 3241 CHECK_(nullHandle)); | |
| 3242 } else { | |
| 3243 check_property(valid_cp_range(super_class_index, cp_size) && | |
|
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|
3244 is_klass_reference(cp, super_class_index), |
| 0 | 3245 "Invalid superclass index %u in class file %s", |
| 3246 super_class_index, | |
| 3247 CHECK_(nullHandle)); | |
| 3248 // The class name should be legal because it is checked when parsing constant pool. | |
| 3249 // However, make sure it is not an array type. | |
|
431
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|
3250 bool is_array = false; |
|
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|
3251 if (cp->tag_at(super_class_index).is_klass()) { |
|
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3252 super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
|
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|
3253 if (_need_verify) |
|
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|
3254 is_array = super_klass->oop_is_array(); |
|
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|
3255 } else if (_need_verify) { |
|
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|
3256 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
|
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|
3257 } |
| 0 | 3258 if (_need_verify) { |
|
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|
3259 guarantee_property(!is_array, |
| 0 | 3260 "Bad superclass name in class file %s", CHECK_(nullHandle)); |
| 3261 } | |
| 3262 } | |
| 3263 | |
| 3264 // Interfaces | |
| 3265 u2 itfs_len = cfs->get_u2_fast(); | |
|
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|
3266 Array<Klass*>* local_interfaces; |
| 0 | 3267 if (itfs_len == 0) { |
|
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|
3268 local_interfaces = Universe::the_empty_klass_array(); |
| 0 | 3269 } else { |
| 6934 | 3270 local_interfaces = parse_interfaces( |
| 3271 cp, itfs_len, loader_data, protection_domain, _class_name, | |
| 3272 &has_default_methods, CHECK_(nullHandle)); | |
| 0 | 3273 } |
| 3274 | |
|
4744
cd5d8cafcc84
7123315: instanceKlass::_static_oop_field_count and instanceKlass::_java_fields_count should be u2 type.
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3938
diff
changeset
|
3275 u2 java_fields_count = 0; |
| 0 | 3276 // Fields (offsets are filled in later) |
| 3938 | 3277 FieldAllocationCount fac; |
|
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|
3278 Array<AnnotationArray*>* fields_annotations = NULL; |
|
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|
3279 Array<AnnotationArray*>* fields_type_annotations = NULL; |
|
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3280 Array<u2>* fields = parse_fields(loader_data, class_name, cp, access_flags.is_interface(), &fac, &fields_annotations, |
|
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|
3281 &fields_type_annotations, |
| 3938 | 3282 &java_fields_count, |
| 3283 CHECK_(nullHandle)); | |
| 0 | 3284 // Methods |
| 3285 bool has_final_method = false; | |
| 3286 AccessFlags promoted_flags; | |
| 3287 promoted_flags.set_flags(0); | |
| 3288 // These need to be oop pointers because they are allocated lazily | |
| 3289 // inside parse_methods inside a nested HandleMark | |
|
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3290 Array<AnnotationArray*>* methods_annotations = NULL; |
|
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3291 Array<AnnotationArray*>* methods_parameter_annotations = NULL; |
|
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3292 Array<AnnotationArray*>* methods_default_annotations = NULL; |
|
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|
3293 Array<AnnotationArray*>* methods_type_annotations = NULL; |
|
6725
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|
3294 Array<Method*>* methods = parse_methods(loader_data, |
|
6831
d8ce2825b193
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coleenp
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diff
changeset
|
3295 cp, access_flags.is_interface(), |
|
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|
3296 &promoted_flags, |
|
d8ce2825b193
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|
3297 &has_final_method, |
|
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|
3298 &methods_annotations, |
|
d8ce2825b193
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|
3299 &methods_parameter_annotations, |
|
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|
3300 &methods_default_annotations, |
|
7457
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|
3301 &methods_type_annotations, |
| 6934 | 3302 &has_default_methods, |
|
6831
d8ce2825b193
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coleenp
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diff
changeset
|
3303 CHECK_(nullHandle)); |
| 0 | 3304 |
|
6222
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diff
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|
3305 // Additional attributes |
|
6d8f36bcef55
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|
3306 ClassAnnotationCollector parsed_annotations; |
|
6725
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|
3307 parse_classfile_attributes(loader_data, cp, &parsed_annotations, CHECK_(nullHandle)); |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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|
3308 |
|
6d8f36bcef55
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jrose
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diff
changeset
|
3309 // Make sure this is the end of class file stream |
|
6d8f36bcef55
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jrose
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diff
changeset
|
3310 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
|
6d8f36bcef55
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jrose
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diff
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|
3311 |
| 0 | 3312 // We check super class after class file is parsed and format is checked |
|
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|
3313 if (super_class_index > 0 && super_klass.is_null()) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3314 Symbol* sk = cp->klass_name_at(super_class_index); |
| 0 | 3315 if (access_flags.is_interface()) { |
| 3316 // Before attempting to resolve the superclass, check for class format | |
| 3317 // errors not checked yet. | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
3318 guarantee_property(sk == vmSymbols::java_lang_Object(), |
| 0 | 3319 "Interfaces must have java.lang.Object as superclass in class file %s", |
| 3320 CHECK_(nullHandle)); | |
| 3321 } | |
|
6831
d8ce2825b193
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coleenp
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diff
changeset
|
3322 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, sk, |
|
d8ce2825b193
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coleenp
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diff
changeset
|
3323 class_loader, |
|
d8ce2825b193
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coleenp
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diff
changeset
|
3324 protection_domain, |
|
d8ce2825b193
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coleenp
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diff
changeset
|
3325 true, |
|
d8ce2825b193
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diff
changeset
|
3326 CHECK_(nullHandle)); |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3327 |
| 0 | 3328 KlassHandle kh (THREAD, k); |
| 3329 super_klass = instanceKlassHandle(THREAD, kh()); | |
|
431
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|
3330 } |
|
a45484ea312d
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diff
changeset
|
3331 if (super_klass.not_null()) { |
| 6934 | 3332 |
| 3333 if (super_klass->has_default_methods()) { | |
| 3334 has_default_methods = true; | |
| 3335 } | |
| 3336 | |
| 0 | 3337 if (super_klass->is_interface()) { |
| 3338 ResourceMark rm(THREAD); | |
| 3339 Exceptions::fthrow( | |
| 3340 THREAD_AND_LOCATION, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3341 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 3342 "class %s has interface %s as super class", |
| 3343 class_name->as_klass_external_name(), | |
| 3344 super_klass->external_name() | |
| 3345 ); | |
| 3346 return nullHandle; | |
| 3347 } | |
| 3348 // Make sure super class is not final | |
| 3349 if (super_klass->is_final()) { | |
| 3350 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
| 3351 } | |
| 3352 } | |
| 3353 | |
| 3354 // Compute the transitive list of all unique interfaces implemented by this class | |
|
6725
da91efe96a93
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coleenp
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diff
changeset
|
3355 Array<Klass*>* transitive_interfaces = compute_transitive_interfaces(loader_data, super_klass, local_interfaces, CHECK_(nullHandle)); |
| 0 | 3356 |
| 3357 // sort methods | |
|
6725
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coleenp
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diff
changeset
|
3358 Array<int>* method_ordering = sort_methods(loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3359 methods, |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6735
diff
changeset
|
3360 methods_annotations, |
|
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6735
diff
changeset
|
3361 methods_parameter_annotations, |
|
d8ce2825b193
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coleenp
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diff
changeset
|
3362 methods_default_annotations, |
|
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|
3363 methods_type_annotations, |
|
6831
d8ce2825b193
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coleenp
parents:
6735
diff
changeset
|
3364 CHECK_(nullHandle)); |
| 0 | 3365 |
| 3366 // promote flags from parse_methods() to the klass' flags | |
| 3367 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
| 3368 | |
| 3369 // Size of Java vtable (in words) | |
| 3370 int vtable_size = 0; | |
| 3371 int itable_size = 0; | |
| 3372 int num_miranda_methods = 0; | |
| 3373 | |
| 6934 | 3374 GrowableArray<Method*> all_mirandas(20); |
| 3375 | |
| 3376 klassVtable::compute_vtable_size_and_num_mirandas( | |
| 3377 &vtable_size, &num_miranda_methods, &all_mirandas, super_klass(), methods, | |
| 3378 access_flags, class_loader, class_name, local_interfaces, | |
|
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3379 CHECK_(nullHandle)); |
| 0 | 3380 |
| 3381 // Size of Java itable (in words) | |
| 3382 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
| 3383 | |
| 3384 // Field size and offset computation | |
| 3385 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
| 3386 #ifndef PRODUCT | |
| 3387 int orig_nonstatic_field_size = 0; | |
| 3388 #endif | |
| 3389 int static_field_size = 0; | |
| 3390 int next_static_oop_offset; | |
| 3391 int next_static_double_offset; | |
| 3392 int next_static_word_offset; | |
| 3393 int next_static_short_offset; | |
| 3394 int next_static_byte_offset; | |
| 3395 int next_static_type_offset; | |
| 3396 int next_nonstatic_oop_offset; | |
| 3397 int next_nonstatic_double_offset; | |
| 3398 int next_nonstatic_word_offset; | |
| 3399 int next_nonstatic_short_offset; | |
| 3400 int next_nonstatic_byte_offset; | |
| 3401 int next_nonstatic_type_offset; | |
| 3402 int first_nonstatic_oop_offset; | |
| 3403 int first_nonstatic_field_offset; | |
| 3404 int next_nonstatic_field_offset; | |
| 3405 | |
| 3406 // Calculate the starting byte offsets | |
|
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6725
diff
changeset
|
3407 next_static_oop_offset = InstanceMirrorKlass::offset_of_static_fields(); |
| 0 | 3408 next_static_double_offset = next_static_oop_offset + |
| 3938 | 3409 (fac.count[STATIC_OOP] * heapOopSize); |
| 3410 if ( fac.count[STATIC_DOUBLE] && | |
| 0 | 3411 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
| 3412 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
| 3413 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
| 3414 } | |
| 3415 | |
| 3416 next_static_word_offset = next_static_double_offset + | |
| 3938 | 3417 (fac.count[STATIC_DOUBLE] * BytesPerLong); |
| 0 | 3418 next_static_short_offset = next_static_word_offset + |
| 3938 | 3419 (fac.count[STATIC_WORD] * BytesPerInt); |
| 0 | 3420 next_static_byte_offset = next_static_short_offset + |
| 3938 | 3421 (fac.count[STATIC_SHORT] * BytesPerShort); |
| 0 | 3422 next_static_type_offset = align_size_up((next_static_byte_offset + |
| 3938 | 3423 fac.count[STATIC_BYTE] ), wordSize ); |
| 0 | 3424 static_field_size = (next_static_type_offset - |
| 3425 next_static_oop_offset) / wordSize; | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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2357
diff
changeset
|
3426 |
|
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3427 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
|
437d03ea40b1
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kvn
parents:
136
diff
changeset
|
3428 nonstatic_field_size * heapOopSize; |
| 0 | 3429 next_nonstatic_field_offset = first_nonstatic_field_offset; |
| 3430 | |
| 3938 | 3431 unsigned int nonstatic_double_count = fac.count[NONSTATIC_DOUBLE]; |
| 3432 unsigned int nonstatic_word_count = fac.count[NONSTATIC_WORD]; | |
| 3433 unsigned int nonstatic_short_count = fac.count[NONSTATIC_SHORT]; | |
| 3434 unsigned int nonstatic_byte_count = fac.count[NONSTATIC_BYTE]; | |
| 3435 unsigned int nonstatic_oop_count = fac.count[NONSTATIC_OOP]; | |
| 0 | 3436 |
|
113
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coleenp
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diff
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|
3437 bool super_has_nonstatic_fields = |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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92
diff
changeset
|
3438 (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
|
ba764ed4b6f2
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92
diff
changeset
|
3439 bool has_nonstatic_fields = super_has_nonstatic_fields || |
|
ba764ed4b6f2
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coleenp
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92
diff
changeset
|
3440 ((nonstatic_double_count + nonstatic_word_count + |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
changeset
|
3441 nonstatic_short_count + nonstatic_byte_count + |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
changeset
|
3442 nonstatic_oop_count) != 0); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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92
diff
changeset
|
3443 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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92
diff
changeset
|
3444 |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3445 // Prepare list of oops for oop map generation. |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3446 int* nonstatic_oop_offsets; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3447 unsigned int* nonstatic_oop_counts; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3448 unsigned int nonstatic_oop_map_count = 0; |
| 0 | 3449 |
| 3450 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3451 THREAD, int, nonstatic_oop_count + 1); |
| 938 | 3452 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3453 THREAD, unsigned int, nonstatic_oop_count + 1); |
| 0 | 3454 |
| 3938 | 3455 first_nonstatic_oop_offset = 0; // will be set for first oop field |
| 0 | 3456 |
| 3457 #ifndef PRODUCT | |
| 3458 if( PrintCompactFieldsSavings ) { | |
| 3459 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
|
113
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coleenp
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92
diff
changeset
|
3460 (nonstatic_oop_count * heapOopSize); |
| 0 | 3461 if ( nonstatic_double_count > 0 ) { |
| 3462 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
| 3463 } | |
| 3464 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
| 3465 (nonstatic_double_count * BytesPerLong); | |
| 3466 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
| 3467 (nonstatic_word_count * BytesPerInt); | |
| 3468 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
| 3469 (nonstatic_short_count * BytesPerShort); | |
| 3470 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
|
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|
3471 nonstatic_byte_count ), heapOopSize ); |
| 0 | 3472 orig_nonstatic_field_size = nonstatic_field_size + |
|
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|
3473 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
| 0 | 3474 } |
| 3475 #endif | |
| 3476 bool compact_fields = CompactFields; | |
| 3477 int allocation_style = FieldsAllocationStyle; | |
|
1366
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|
3478 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
|
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|
3479 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
| 0 | 3480 allocation_style = 1; // Optimistic |
| 3481 } | |
| 3482 | |
| 3483 // The next classes have predefined hard-coded fields offsets | |
| 3484 // (see in JavaClasses::compute_hard_coded_offsets()). | |
| 3485 // Use default fields allocation order for them. | |
| 3486 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && | |
|
2177
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|
3487 (class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
|
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|
3488 class_name == vmSymbols::java_lang_Class() || |
|
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|
3489 class_name == vmSymbols::java_lang_ClassLoader() || |
|
3582bf76420e
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|
3490 class_name == vmSymbols::java_lang_ref_Reference() || |
|
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|
3491 class_name == vmSymbols::java_lang_ref_SoftReference() || |
|
3582bf76420e
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|
3492 class_name == vmSymbols::java_lang_StackTraceElement() || |
|
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|
3493 class_name == vmSymbols::java_lang_String() || |
|
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|
3494 class_name == vmSymbols::java_lang_Throwable() || |
|
3582bf76420e
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|
3495 class_name == vmSymbols::java_lang_Boolean() || |
|
3582bf76420e
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|
3496 class_name == vmSymbols::java_lang_Character() || |
|
3582bf76420e
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|
3497 class_name == vmSymbols::java_lang_Float() || |
|
3582bf76420e
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|
3498 class_name == vmSymbols::java_lang_Double() || |
|
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|
3499 class_name == vmSymbols::java_lang_Byte() || |
|
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|
3500 class_name == vmSymbols::java_lang_Short() || |
|
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|
3501 class_name == vmSymbols::java_lang_Integer() || |
|
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|
3502 class_name == vmSymbols::java_lang_Long())) { |
| 0 | 3503 allocation_style = 0; // Allocate oops first |
| 3504 compact_fields = false; // Don't compact fields | |
| 3505 } | |
| 3506 | |
| 3507 if( allocation_style == 0 ) { | |
| 3508 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes | |
| 3509 next_nonstatic_oop_offset = next_nonstatic_field_offset; | |
| 3510 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
|
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|
3511 (nonstatic_oop_count * heapOopSize); |
| 0 | 3512 } else if( allocation_style == 1 ) { |
| 3513 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops | |
| 3514 next_nonstatic_double_offset = next_nonstatic_field_offset; | |
|
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|
3515 } else if( allocation_style == 2 ) { |
|
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|
3516 // Fields allocation: oops fields in super and sub classes are together. |
|
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|
3517 if( nonstatic_field_size > 0 && super_klass() != NULL && |
|
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|
3518 super_klass->nonstatic_oop_map_size() > 0 ) { |
|
3786
498c6cf70f7e
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3245
diff
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|
3519 int map_count = super_klass->nonstatic_oop_map_count(); |
|
1366
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|
3520 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
|
3786
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diff
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|
3521 OopMapBlock* last_map = first_map + map_count - 1; |
|
1366
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|
3522 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
|
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|
3523 if (next_offset == next_nonstatic_field_offset) { |
|
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|
3524 allocation_style = 0; // allocate oops first |
|
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|
3525 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
|
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|
3526 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
|
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|
3527 (nonstatic_oop_count * heapOopSize); |
|
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|
3528 } |
|
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|
3529 } |
|
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|
3530 if( allocation_style == 2 ) { |
|
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diff
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|
3531 allocation_style = 1; // allocate oops last |
|
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|
3532 next_nonstatic_double_offset = next_nonstatic_field_offset; |
|
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|
3533 } |
| 0 | 3534 } else { |
| 3535 ShouldNotReachHere(); | |
| 3536 } | |
| 3537 | |
| 3538 int nonstatic_oop_space_count = 0; | |
| 3539 int nonstatic_word_space_count = 0; | |
| 3540 int nonstatic_short_space_count = 0; | |
| 3541 int nonstatic_byte_space_count = 0; | |
| 3542 int nonstatic_oop_space_offset; | |
| 3543 int nonstatic_word_space_offset; | |
| 3544 int nonstatic_short_space_offset; | |
| 3545 int nonstatic_byte_space_offset; | |
| 3546 | |
|
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|
3547 if( nonstatic_double_count > 0 ) { |
|
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|
3548 int offset = next_nonstatic_double_offset; |
| 0 | 3549 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
| 3550 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
| 3551 // Allocate available fields into the gap before double field. | |
| 3552 int length = next_nonstatic_double_offset - offset; | |
| 3553 assert(length == BytesPerInt, ""); | |
| 3554 nonstatic_word_space_offset = offset; | |
| 3555 if( nonstatic_word_count > 0 ) { | |
| 3556 nonstatic_word_count -= 1; | |
| 3557 nonstatic_word_space_count = 1; // Only one will fit | |
| 3558 length -= BytesPerInt; | |
| 3559 offset += BytesPerInt; | |
| 3560 } | |
| 3561 nonstatic_short_space_offset = offset; | |
| 3562 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
| 3563 nonstatic_short_count -= 1; | |
| 3564 nonstatic_short_space_count += 1; | |
| 3565 length -= BytesPerShort; | |
| 3566 offset += BytesPerShort; | |
| 3567 } | |
| 3568 nonstatic_byte_space_offset = offset; | |
| 3569 while( length > 0 && nonstatic_byte_count > 0 ) { | |
| 3570 nonstatic_byte_count -= 1; | |
| 3571 nonstatic_byte_space_count += 1; | |
| 3572 length -= 1; | |
| 3573 } | |
| 3574 // Allocate oop field in the gap if there are no other fields for that. | |
| 3575 nonstatic_oop_space_offset = offset; | |
|
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|
3576 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
| 0 | 3577 allocation_style != 0 ) { // when oop fields not first |
| 3578 nonstatic_oop_count -= 1; | |
| 3579 nonstatic_oop_space_count = 1; // Only one will fit | |
|
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|
3580 length -= heapOopSize; |
|
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diff
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|
3581 offset += heapOopSize; |
| 0 | 3582 } |
| 3583 } | |
| 3584 } | |
| 3585 | |
| 3586 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
| 3587 (nonstatic_double_count * BytesPerLong); | |
| 3588 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
| 3589 (nonstatic_word_count * BytesPerInt); | |
| 3590 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
| 3591 (nonstatic_short_count * BytesPerShort); | |
| 3592 | |
| 3593 int notaligned_offset; | |
| 3594 if( allocation_style == 0 ) { | |
| 3595 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
| 3596 } else { // allocation_style == 1 | |
| 3597 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
| 3598 if( nonstatic_oop_count > 0 ) { | |
|
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|
3599 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
| 0 | 3600 } |
|
113
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|
3601 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
| 0 | 3602 } |
|
165
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|
3603 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
| 0 | 3604 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
|
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|
3605 - first_nonstatic_field_offset)/heapOopSize); |
| 0 | 3606 |
| 3607 // Iterate over fields again and compute correct offsets. | |
| 3608 // The field allocation type was temporarily stored in the offset slot. | |
| 3609 // oop fields are located before non-oop fields (static and non-static). | |
| 3938 | 3610 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
| 0 | 3611 int real_offset; |
| 3938 | 3612 FieldAllocationType atype = (FieldAllocationType) fs.offset(); |
| 0 | 3613 switch (atype) { |
| 3614 case STATIC_OOP: | |
| 3615 real_offset = next_static_oop_offset; | |
|
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|
3616 next_static_oop_offset += heapOopSize; |
| 0 | 3617 break; |
| 3618 case STATIC_BYTE: | |
| 3619 real_offset = next_static_byte_offset; | |
| 3620 next_static_byte_offset += 1; | |
| 3621 break; | |
| 3622 case STATIC_SHORT: | |
| 3623 real_offset = next_static_short_offset; | |
| 3624 next_static_short_offset += BytesPerShort; | |
| 3625 break; | |
| 3626 case STATIC_WORD: | |
| 3627 real_offset = next_static_word_offset; | |
| 3628 next_static_word_offset += BytesPerInt; | |
| 3629 break; | |
| 3630 case STATIC_DOUBLE: | |
| 3631 real_offset = next_static_double_offset; | |
| 3632 next_static_double_offset += BytesPerLong; | |
| 3633 break; | |
| 3634 case NONSTATIC_OOP: | |
| 3635 if( nonstatic_oop_space_count > 0 ) { | |
| 3636 real_offset = nonstatic_oop_space_offset; | |
|
113
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|
3637 nonstatic_oop_space_offset += heapOopSize; |
| 0 | 3638 nonstatic_oop_space_count -= 1; |
| 3639 } else { | |
| 3640 real_offset = next_nonstatic_oop_offset; | |
|
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|
3641 next_nonstatic_oop_offset += heapOopSize; |
| 0 | 3642 } |
| 3643 // Update oop maps | |
| 3644 if( nonstatic_oop_map_count > 0 && | |
| 3645 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
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|
3646 real_offset - |
|
9eebd3ac74cf
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938
diff
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|
3647 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
|
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938
diff
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|
3648 heapOopSize ) { |
| 0 | 3649 // Extend current oop map |
| 938 | 3650 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
| 0 | 3651 } else { |
| 3652 // Create new oop map | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
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938
diff
changeset
|
3653 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
| 938 | 3654 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
| 0 | 3655 nonstatic_oop_map_count += 1; |
| 3656 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
| 3657 first_nonstatic_oop_offset = real_offset; | |
| 3658 } | |
| 3659 } | |
| 3660 break; | |
| 3661 case NONSTATIC_BYTE: | |
| 3662 if( nonstatic_byte_space_count > 0 ) { | |
| 3663 real_offset = nonstatic_byte_space_offset; | |
| 3664 nonstatic_byte_space_offset += 1; | |
| 3665 nonstatic_byte_space_count -= 1; | |
| 3666 } else { | |
| 3667 real_offset = next_nonstatic_byte_offset; | |
| 3668 next_nonstatic_byte_offset += 1; | |
| 3669 } | |
| 3670 break; | |
| 3671 case NONSTATIC_SHORT: | |
| 3672 if( nonstatic_short_space_count > 0 ) { | |
| 3673 real_offset = nonstatic_short_space_offset; | |
| 3674 nonstatic_short_space_offset += BytesPerShort; | |
| 3675 nonstatic_short_space_count -= 1; | |
| 3676 } else { | |
| 3677 real_offset = next_nonstatic_short_offset; | |
| 3678 next_nonstatic_short_offset += BytesPerShort; | |
| 3679 } | |
| 3680 break; | |
| 3681 case NONSTATIC_WORD: | |
| 3682 if( nonstatic_word_space_count > 0 ) { | |
| 3683 real_offset = nonstatic_word_space_offset; | |
| 3684 nonstatic_word_space_offset += BytesPerInt; | |
| 3685 nonstatic_word_space_count -= 1; | |
| 3686 } else { | |
| 3687 real_offset = next_nonstatic_word_offset; | |
| 3688 next_nonstatic_word_offset += BytesPerInt; | |
| 3689 } | |
| 3690 break; | |
| 3691 case NONSTATIC_DOUBLE: | |
| 3692 real_offset = next_nonstatic_double_offset; | |
| 3693 next_nonstatic_double_offset += BytesPerLong; | |
| 3694 break; | |
| 3695 default: | |
| 3696 ShouldNotReachHere(); | |
| 3697 } | |
| 3938 | 3698 fs.set_offset(real_offset); |
| 0 | 3699 } |
| 3700 | |
| 3701 // Size of instances | |
| 3702 int instance_size; | |
| 3703 | |
|
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|
3704 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
| 0 | 3705 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
| 3706 | |
|
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3707 assert(instance_size == align_object_size(align_size_up((instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize), wordSize) / wordSize), "consistent layout helper value"); |
| 0 | 3708 |
| 938 | 3709 // Number of non-static oop map blocks allocated at end of klass. |
|
939
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diff
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|
3710 const unsigned int total_oop_map_count = |
|
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diff
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|
3711 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
|
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938
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|
3712 first_nonstatic_oop_offset); |
| 0 | 3713 |
| 3714 // Compute reference type | |
| 3715 ReferenceType rt; | |
| 3716 if (super_klass() == NULL) { | |
| 3717 rt = REF_NONE; | |
| 3718 } else { | |
| 3719 rt = super_klass->reference_type(); | |
| 3720 } | |
| 3721 | |
|
6725
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|
3722 // We can now create the basic Klass* for this klass |
|
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|
3723 int total_oop_map_size2 = |
|
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|
3724 InstanceKlass::nonstatic_oop_map_size(total_oop_map_count); |
|
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3725 |
|
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|
3726 Klass* ik = InstanceKlass::allocate_instance_klass(loader_data, |
|
6831
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diff
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|
3727 vtable_size, |
|
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
changeset
|
3728 itable_size, |
|
d8ce2825b193
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diff
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|
3729 static_field_size, |
|
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changeset
|
3730 total_oop_map_size2, |
|
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diff
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|
3731 rt, |
|
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diff
changeset
|
3732 access_flags, |
|
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diff
changeset
|
3733 name, |
|
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diff
changeset
|
3734 super_klass(), |
|
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|
3735 host_klass, |
|
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|
3736 CHECK_(nullHandle)); |
|
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|
3737 |
|
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|
3738 // Add all classes to our internal class loader list here, |
|
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3739 // including classes in the bootstrap (NULL) class loader. |
|
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|
3740 loader_data->add_class(ik); |
|
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|
3741 |
| 0 | 3742 instanceKlassHandle this_klass (THREAD, ik); |
| 3743 | |
| 938 | 3744 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
| 3745 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
| 3746 "sanity"); | |
| 0 | 3747 |
| 3748 // Fill in information already parsed | |
| 975 | 3749 this_klass->set_should_verify_class(verify); |
| 0 | 3750 jint lh = Klass::instance_layout_helper(instance_size, false); |
| 3751 this_klass->set_layout_helper(lh); | |
| 3752 assert(this_klass->oop_is_instance(), "layout is correct"); | |
| 3753 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
| 3754 // Not yet: supers are done below to support the new subtype-checking fields | |
| 3755 //this_klass->set_super(super_klass()); | |
|
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3756 this_klass->set_class_loader_data(loader_data); |
| 0 | 3757 this_klass->set_nonstatic_field_size(nonstatic_field_size); |
| 975 | 3758 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
| 3938 | 3759 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
| 0 | 3760 cp->set_pool_holder(this_klass()); |
|
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3582bf76420e
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|
3761 error_handler.set_in_error(false); // turn off error handler for cp |
| 0 | 3762 this_klass->set_constants(cp()); |
|
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3763 this_klass->set_local_interfaces(local_interfaces); |
|
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3764 this_klass->set_fields(fields, java_fields_count); |
|
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3765 this_klass->set_methods(methods); |
| 0 | 3766 if (has_final_method) { |
| 3767 this_klass->set_has_final_method(); | |
| 3768 } | |
|
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3769 this_klass->set_method_ordering(method_ordering); |
|
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3770 // The InstanceKlass::_methods_jmethod_ids cache and the |
|
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|
3771 // InstanceKlass::_methods_cached_itable_indices cache are |
|
977
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|
3772 // both managed on the assumption that the initial cache |
|
74a5db69c1fe
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|
3773 // size is equal to the number of methods in the class. If |
|
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|
3774 // that changes, then InstanceKlass::idnum_can_increment() |
|
977
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|
3775 // has to be changed accordingly. |
| 0 | 3776 this_klass->set_initial_method_idnum(methods->length()); |
| 3777 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
| 6852 | 3778 if (is_anonymous()) // I am well known to myself |
|
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
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|
3779 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
|
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|
3780 |
|
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|
3781 // Allocate an annotation type if needed. |
|
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|
3782 if (fields_annotations != NULL || |
|
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|
3783 methods_annotations != NULL || |
|
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|
3784 methods_parameter_annotations != NULL || |
|
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|
3785 methods_default_annotations != NULL || |
|
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|
3786 fields_type_annotations != NULL || |
|
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|
3787 methods_type_annotations != NULL) { |
|
6725
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|
3788 Annotations* anno = Annotations::allocate(loader_data, |
|
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|
3789 fields_annotations, methods_annotations, |
|
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|
3790 methods_parameter_annotations, |
|
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|
3791 methods_default_annotations, CHECK_(nullHandle)); |
|
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|
3792 this_klass->set_annotations(anno); |
|
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|
3793 } else { |
|
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|
3794 this_klass->set_annotations(NULL); |
|
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|
3795 } |
|
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|
3796 |
|
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|
3797 if (fields_type_annotations != NULL || |
|
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|
3798 methods_type_annotations != NULL) { |
|
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|
3799 assert(this_klass->annotations() != NULL, "annotations should have been allocated"); |
|
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|
3800 Annotations* anno = Annotations::allocate(loader_data, |
|
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|
3801 fields_type_annotations, |
|
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|
3802 methods_type_annotations, |
|
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|
3803 NULL, |
|
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|
3804 NULL, CHECK_(nullHandle)); |
|
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|
3805 this_klass->annotations()->set_type_annotations(anno); |
|
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|
3806 } |
| 0 | 3807 |
| 3808 this_klass->set_minor_version(minor_version); | |
| 3809 this_klass->set_major_version(major_version); | |
| 6934 | 3810 this_klass->set_has_default_methods(has_default_methods); |
| 0 | 3811 |
|
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|
3812 // Set up Method*::intrinsic_id as soon as we know the names of methods. |
|
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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diff
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|
3813 // (We used to do this lazily, but now we query it in Rewriter, |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
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diff
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|
3814 // which is eagerly done for every method, so we might as well do it now, |
|
75596850f863
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|
3815 // when everything is fresh in memory.) |
|
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|
3816 if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
|
856
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|
3817 for (int j = 0; j < methods->length(); j++) { |
|
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|
3818 methods->at(j)->init_intrinsic_id(); |
|
856
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|
3819 } |
|
75596850f863
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|
3820 } |
|
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|
3821 |
| 0 | 3822 if (cached_class_file_bytes != NULL) { |
|
6725
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|
3823 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
| 0 | 3824 this_klass->set_cached_class_file(cached_class_file_bytes, |
| 3825 cached_class_file_length); | |
| 3826 } | |
| 3827 | |
| 6934 | 3828 // Fill in field values obtained by parse_classfile_attributes |
| 3829 if (parsed_annotations.has_any_annotations()) | |
| 3830 parsed_annotations.apply_to(this_klass); | |
|
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|
3831 |
| 6934 | 3832 // Create annotations |
| 3833 if (_annotations != NULL && this_klass->annotations() == NULL) { | |
| 3834 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); | |
| 3835 this_klass->set_annotations(anno); | |
| 3836 } | |
| 3837 apply_parsed_class_attributes(this_klass); | |
| 3838 | |
|
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|
3839 // Create type annotations |
|
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|
3840 if (_type_annotations != NULL) { |
|
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|
3841 if (this_klass->annotations() == NULL) { |
|
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|
3842 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
|
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|
3843 this_klass->set_annotations(anno); |
|
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|
3844 } |
|
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|
3845 if (this_klass->annotations()->type_annotations() == NULL) { |
|
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|
3846 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
|
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|
3847 this_klass->annotations()->set_type_annotations(anno); |
|
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|
3848 } |
|
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|
3849 this_klass->annotations()->type_annotations()->set_class_annotations(_type_annotations); |
|
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|
3850 } |
|
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|
3851 |
| 0 | 3852 // Miranda methods |
| 3853 if ((num_miranda_methods > 0) || | |
| 3854 // if this class introduced new miranda methods or | |
| 3855 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
| 3856 // super class exists and this class inherited miranda methods | |
| 3857 ) { | |
| 3858 this_klass->set_has_miranda_methods(); // then set a flag | |
| 3859 } | |
| 3860 | |
|
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|
3861 this_klass->set_transitive_interfaces(transitive_interfaces); |
| 0 | 3862 |
| 3863 // Fill in information needed to compute superclasses. | |
| 3864 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
| 3865 | |
| 3866 // Initialize itable offset tables | |
| 3867 klassItable::setup_itable_offset_table(this_klass); | |
| 3868 | |
| 6934 | 3869 // Compute transitive closure of interfaces this class implements |
| 0 | 3870 // Do final class setup |
| 938 | 3871 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
| 0 | 3872 |
|
6222
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6711908: JVM needs direct access to some annotations
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|
3873 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
| 0 | 3874 set_precomputed_flags(this_klass); |
| 3875 | |
| 3876 // reinitialize modifiers, using the InnerClasses attribute | |
| 3877 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
| 3878 this_klass->set_modifier_flags(computed_modifiers); | |
| 3879 | |
| 3880 // check if this class can access its super class | |
| 3881 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
| 3882 | |
| 3883 // check if this class can access its superinterfaces | |
| 3884 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
| 3885 | |
| 3886 // check if this class overrides any final method | |
| 3887 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
| 3888 | |
| 3889 // check that if this class is an interface then it doesn't have static methods | |
| 3890 if (this_klass->is_interface()) { | |
| 3891 check_illegal_static_method(this_klass, CHECK_(nullHandle)); | |
| 3892 } | |
| 3893 | |
| 6934 | 3894 |
| 3895 #ifdef ASSERT | |
| 3896 if (ParseAllGenericSignatures) { | |
| 3897 parseAndPrintGenericSignatures(this_klass, CHECK_(nullHandle)); | |
| 3898 } | |
| 3899 #endif | |
| 3900 | |
| 3901 // Generate any default methods - default methods are interface methods | |
| 3902 // that have a default implementation. This is new with Lambda project. | |
| 3903 if (has_default_methods && !access_flags.is_interface() && | |
| 3904 local_interfaces->length() > 0) { | |
| 3905 DefaultMethods::generate_default_methods( | |
| 3906 this_klass(), &all_mirandas, CHECK_(nullHandle)); | |
| 3907 } | |
| 3908 | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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|
3909 // Allocate mirror and initialize static fields |
|
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7017732: move static fields into Class to prepare for perm gen removal
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diff
changeset
|
3910 java_lang_Class::create_mirror(this_klass, CHECK_(nullHandle)); |
|
c7f3d0b4570f
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|
3911 |
|
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|
3912 // Allocate a simple java object for locking during class initialization. |
|
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|
3913 // This needs to be a java object because it can be held across a java call. |
|
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|
3914 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_NULL); |
|
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|
3915 this_klass->set_init_lock(r); |
|
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|
3916 |
|
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changeset
|
3917 // TODO: Move these oops to the mirror |
|
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|
3918 this_klass->set_protection_domain(protection_domain()); |
|
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3919 |
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3920 // Update the loader_data graph. |
|
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3921 record_defined_class_dependencies(this_klass, CHECK_NULL); |
|
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3922 |
|
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3923 ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
| 0 | 3924 false /* not shared class */); |
| 3925 | |
| 3926 if (TraceClassLoading) { | |
| 6934 | 3927 ResourceMark rm; |
| 0 | 3928 // print in a single call to reduce interleaving of output |
| 3929 if (cfs->source() != NULL) { | |
| 3930 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
| 3931 cfs->source()); | |
| 3932 } else if (class_loader.is_null()) { | |
| 3933 if (THREAD->is_Java_thread()) { | |
|
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3934 Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
| 0 | 3935 tty->print("[Loaded %s by instance of %s]\n", |
| 3936 this_klass->external_name(), | |
|
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3937 InstanceKlass::cast(caller)->external_name()); |
| 0 | 3938 } else { |
| 3939 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
| 3940 } | |
| 3941 } else { | |
| 3942 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
|
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3943 InstanceKlass::cast(class_loader->klass())->external_name()); |
| 0 | 3944 } |
| 3945 } | |
| 3946 | |
| 3947 if (TraceClassResolution) { | |
| 6934 | 3948 ResourceMark rm; |
| 0 | 3949 // print out the superclass. |
| 6983 | 3950 const char * from = this_klass()->external_name(); |
| 0 | 3951 if (this_klass->java_super() != NULL) { |
|
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3952 tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
| 0 | 3953 } |
| 3954 // print out each of the interface classes referred to by this class. | |
|
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3955 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
|
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3956 if (local_interfaces != NULL) { |
| 0 | 3957 int length = local_interfaces->length(); |
| 3958 for (int i = 0; i < length; i++) { | |
|
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3959 Klass* k = local_interfaces->at(i); |
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3960 InstanceKlass* to_class = InstanceKlass::cast(k); |
| 0 | 3961 const char * to = to_class->external_name(); |
|
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3962 tty->print("RESOLVE %s %s (interface)\n", from, to); |
| 0 | 3963 } |
| 3964 } | |
| 3965 } | |
| 3966 | |
| 3967 #ifndef PRODUCT | |
| 3968 if( PrintCompactFieldsSavings ) { | |
| 6934 | 3969 ResourceMark rm; |
| 0 | 3970 if( nonstatic_field_size < orig_nonstatic_field_size ) { |
|
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3971 tty->print("[Saved %d of %d bytes in %s]\n", |
|
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3972 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
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3973 orig_nonstatic_field_size*heapOopSize, |
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3974 this_klass->external_name()); |
| 0 | 3975 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
|
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3976 tty->print("[Wasted %d over %d bytes in %s]\n", |
|
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3977 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
|
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3978 orig_nonstatic_field_size*heapOopSize, |
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3979 this_klass->external_name()); |
| 0 | 3980 } |
| 3981 } | |
| 3982 #endif | |
| 3983 | |
| 3984 // preserve result across HandleMark | |
| 3985 preserve_this_klass = this_klass(); | |
| 3986 } | |
| 3987 | |
|
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3988 // Create new handle outside HandleMark (might be needed for |
|
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3989 // Extended Class Redefinition) |
| 0 | 3990 instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
|
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3991 debug_only(this_klass->verify();) |
| 0 | 3992 |
| 3993 return this_klass; | |
| 3994 } | |
| 3995 | |
|
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3996 unsigned int |
|
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3997 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
|
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3998 unsigned int nonstatic_oop_map_count, |
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3999 int first_nonstatic_oop_offset) { |
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4000 unsigned int map_count = |
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|
4001 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
| 0 | 4002 if (nonstatic_oop_map_count > 0) { |
| 4003 // We have oops to add to map | |
| 938 | 4004 if (map_count == 0) { |
| 4005 map_count = nonstatic_oop_map_count; | |
| 0 | 4006 } else { |
| 938 | 4007 // Check whether we should add a new map block or whether the last one can |
| 4008 // be extended | |
| 4009 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
| 4010 OopMapBlock* const last_map = first_map + map_count - 1; | |
| 4011 | |
| 4012 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
| 0 | 4013 if (next_offset == first_nonstatic_oop_offset) { |
| 4014 // There is no gap bettwen superklass's last oop field and first | |
| 4015 // local oop field, merge maps. | |
| 4016 nonstatic_oop_map_count -= 1; | |
| 4017 } else { | |
| 4018 // Superklass didn't end with a oop field, add extra maps | |
| 938 | 4019 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
| 0 | 4020 } |
| 938 | 4021 map_count += nonstatic_oop_map_count; |
| 0 | 4022 } |
| 4023 } | |
| 938 | 4024 return map_count; |
| 0 | 4025 } |
| 4026 | |
| 4027 | |
| 4028 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
|
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4029 unsigned int nonstatic_oop_map_count, |
|
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4030 int* nonstatic_oop_offsets, |
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4031 unsigned int* nonstatic_oop_counts) { |
| 0 | 4032 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
|
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4033 const InstanceKlass* const super = k->superklass(); |
|
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4034 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
| 938 | 4035 if (super_count > 0) { |
| 4036 // Copy maps from superklass | |
| 0 | 4037 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
|
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4038 for (unsigned int i = 0; i < super_count; ++i) { |
| 0 | 4039 *this_oop_map++ = *super_oop_map++; |
| 4040 } | |
| 4041 } | |
| 938 | 4042 |
| 0 | 4043 if (nonstatic_oop_map_count > 0) { |
| 938 | 4044 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
| 4045 // The counts differ because there is no gap between superklass's last oop | |
| 4046 // field and the first local oop field. Extend the last oop map copied | |
| 0 | 4047 // from the superklass instead of creating new one. |
| 4048 nonstatic_oop_map_count--; | |
| 4049 nonstatic_oop_offsets++; | |
| 4050 this_oop_map--; | |
| 938 | 4051 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
| 0 | 4052 this_oop_map++; |
| 4053 } | |
| 938 | 4054 |
| 0 | 4055 // Add new map blocks, fill them |
| 4056 while (nonstatic_oop_map_count-- > 0) { | |
| 4057 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
| 938 | 4058 this_oop_map->set_count(*nonstatic_oop_counts++); |
| 0 | 4059 this_oop_map++; |
| 4060 } | |
| 938 | 4061 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
| 4062 this_oop_map, "sanity"); | |
| 0 | 4063 } |
| 4064 } | |
| 4065 | |
| 4066 | |
| 4067 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
|
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4068 Klass* super = k->super(); |
| 0 | 4069 |
| 4070 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
| 4071 // in which case we don't have to register objects as finalizable | |
| 4072 if (!_has_empty_finalizer) { | |
| 4073 if (_has_finalizer || | |
|
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4074 (super != NULL && super->has_finalizer())) { |
| 0 | 4075 k->set_has_finalizer(); |
| 4076 } | |
| 4077 } | |
| 4078 | |
| 4079 #ifdef ASSERT | |
| 4080 bool f = false; | |
|
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4081 Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
| 0 | 4082 vmSymbols::void_method_signature()); |
| 4083 if (m != NULL && !m->is_empty_method()) { | |
| 4084 f = true; | |
| 4085 } | |
| 4086 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
| 4087 #endif | |
| 4088 | |
| 4089 // Check if this klass supports the java.lang.Cloneable interface | |
| 1142 | 4090 if (SystemDictionary::Cloneable_klass_loaded()) { |
| 4091 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
| 0 | 4092 k->set_is_cloneable(); |
| 4093 } | |
| 4094 } | |
| 4095 | |
| 4096 // Check if this klass has a vanilla default constructor | |
| 4097 if (super == NULL) { | |
| 4098 // java.lang.Object has empty default constructor | |
| 4099 k->set_has_vanilla_constructor(); | |
| 4100 } else { | |
| 6983 | 4101 if (super->has_vanilla_constructor() && |
| 0 | 4102 _has_vanilla_constructor) { |
| 4103 k->set_has_vanilla_constructor(); | |
| 4104 } | |
| 4105 #ifdef ASSERT | |
| 4106 bool v = false; | |
| 6983 | 4107 if (super->has_vanilla_constructor()) { |
|
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4108 Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
| 0 | 4109 ), vmSymbols::void_method_signature()); |
| 4110 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
| 4111 v = true; | |
| 4112 } | |
| 4113 } | |
| 4114 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
| 4115 #endif | |
| 4116 } | |
| 4117 | |
| 4118 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
|
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4119 // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
| 0 | 4120 assert(k->size_helper() > 0, "layout_helper is initialized"); |
| 4121 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
| 4122 || k->is_abstract() || k->is_interface() | |
|
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|
4123 || (k->name() == vmSymbols::java_lang_Class() && k->class_loader() == NULL) |
| 0 | 4124 || k->size_helper() >= FastAllocateSizeLimit) { |
| 4125 // Forbid fast-path allocation. | |
| 4126 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
| 4127 k->set_layout_helper(lh); | |
| 4128 } | |
| 4129 } | |
| 4130 | |
|
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4131 // Attach super classes and interface classes to class loader data |
|
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4132 void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
|
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4133 ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
|
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4134 if (defining_loader_data->is_the_null_class_loader_data()) { |
|
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4135 // Dependencies to null class loader data are implicit. |
|
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4136 return; |
|
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|
4137 } else { |
|
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4138 // add super class dependency |
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4139 Klass* super = defined_klass->super(); |
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4140 if (super != NULL) { |
|
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4141 defining_loader_data->record_dependency(super, CHECK); |
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4142 } |
|
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4143 |
|
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4144 // add super interface dependencies |
|
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4145 Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
|
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4146 if (local_interfaces != NULL) { |
|
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4147 int length = local_interfaces->length(); |
|
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4148 for (int i = 0; i < length; i++) { |
|
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4149 defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
| 0 | 4150 } |
| 4151 } | |
| 4152 } | |
| 4153 } | |
| 4154 | |
|
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4155 // utility method for appending and array with check for duplicates |
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4156 |
|
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4157 void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
|
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4158 // iterate over new interfaces |
|
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4159 for (int i = 0; i < ifs->length(); i++) { |
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4160 Klass* e = ifs->at(i); |
|
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4161 assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
|
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4162 // add new interface |
|
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4163 result->append_if_missing(e); |
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4164 } |
|
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4165 } |
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4166 |
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4167 |
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4168 Array<Klass*>* ClassFileParser::compute_transitive_interfaces(ClassLoaderData* loader_data, instanceKlassHandle super, Array<Klass*>* local_ifs, TRAPS) { |
| 0 | 4169 // Compute maximum size for transitive interfaces |
| 4170 int max_transitive_size = 0; | |
| 4171 int super_size = 0; | |
| 4172 // Add superclass transitive interfaces size | |
| 4173 if (super.not_null()) { | |
| 4174 super_size = super->transitive_interfaces()->length(); | |
| 4175 max_transitive_size += super_size; | |
| 4176 } | |
| 4177 // Add local interfaces' super interfaces | |
| 4178 int local_size = local_ifs->length(); | |
| 4179 for (int i = 0; i < local_size; i++) { | |
|
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4180 Klass* l = local_ifs->at(i); |
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4181 max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
| 0 | 4182 } |
| 4183 // Finally add local interfaces | |
| 4184 max_transitive_size += local_size; | |
| 4185 // Construct array | |
| 4186 if (max_transitive_size == 0) { | |
| 4187 // no interfaces, use canonicalized array | |
|
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4188 return Universe::the_empty_klass_array(); |
| 0 | 4189 } else if (max_transitive_size == super_size) { |
| 4190 // no new local interfaces added, share superklass' transitive interface array | |
|
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4191 return super->transitive_interfaces(); |
| 0 | 4192 } else if (max_transitive_size == local_size) { |
| 4193 // only local interfaces added, share local interface array | |
|
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4194 return local_ifs; |
| 0 | 4195 } else { |
|
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4196 ResourceMark rm; |
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4197 GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
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4198 |
| 0 | 4199 // Copy down from superclass |
| 4200 if (super.not_null()) { | |
|
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4201 append_interfaces(result, super->transitive_interfaces()); |
| 0 | 4202 } |
|
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4203 |
| 0 | 4204 // Copy down from local interfaces' superinterfaces |
| 4205 for (int i = 0; i < local_ifs->length(); i++) { | |
|
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4206 Klass* l = local_ifs->at(i); |
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4207 append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
| 0 | 4208 } |
| 4209 // Finally add local interfaces | |
|
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4210 append_interfaces(result, local_ifs); |
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4211 |
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4212 // length will be less than the max_transitive_size if duplicates were removed |
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4213 int length = result->length(); |
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4214 assert(length <= max_transitive_size, "just checking"); |
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4215 Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(loader_data, length, CHECK_NULL); |
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4216 for (int i = 0; i < length; i++) { |
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4217 Klass* e = result->at(i); |
| 0 | 4218 assert(e != NULL, "just checking"); |
|
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4219 new_result->at_put(i, e); |
| 0 | 4220 } |
|
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4221 return new_result; |
| 0 | 4222 } |
| 4223 } | |
| 4224 | |
| 4225 | |
| 4226 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
|
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4227 Klass* super = this_klass->super(); |
| 0 | 4228 if ((super != NULL) && |
|
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4229 (!Reflection::verify_class_access(this_klass(), super, false))) { |
| 0 | 4230 ResourceMark rm(THREAD); |
| 4231 Exceptions::fthrow( | |
| 4232 THREAD_AND_LOCATION, | |
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4233 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 4234 "class %s cannot access its superclass %s", |
| 4235 this_klass->external_name(), | |
|
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4236 InstanceKlass::cast(super)->external_name() |
| 0 | 4237 ); |
| 4238 return; | |
| 4239 } | |
| 4240 } | |
| 4241 | |
| 4242 | |
| 4243 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
|
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4244 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
| 0 | 4245 int lng = local_interfaces->length(); |
| 4246 for (int i = lng - 1; i >= 0; i--) { | |
|
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4247 Klass* k = local_interfaces->at(i); |
| 6983 | 4248 assert (k != NULL && k->is_interface(), "invalid interface"); |
|
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4249 if (!Reflection::verify_class_access(this_klass(), k, false)) { |
| 0 | 4250 ResourceMark rm(THREAD); |
| 4251 Exceptions::fthrow( | |
| 4252 THREAD_AND_LOCATION, | |
|
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4253 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 4254 "class %s cannot access its superinterface %s", |
| 4255 this_klass->external_name(), | |
|
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4256 InstanceKlass::cast(k)->external_name() |
| 0 | 4257 ); |
| 4258 return; | |
| 4259 } | |
| 4260 } | |
| 4261 } | |
| 4262 | |
| 4263 | |
| 4264 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
|
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4265 Array<Method*>* methods = this_klass->methods(); |
| 0 | 4266 int num_methods = methods->length(); |
| 4267 | |
| 4268 // go thru each method and check if it overrides a final method | |
| 4269 for (int index = 0; index < num_methods; index++) { | |
|
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4270 Method* m = methods->at(index); |
| 0 | 4271 |
| 4272 // skip private, static and <init> methods | |
| 4273 if ((!m->is_private()) && | |
| 4274 (!m->is_static()) && | |
| 4275 (m->name() != vmSymbols::object_initializer_name())) { | |
| 4276 | |
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4277 Symbol* name = m->name(); |
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4278 Symbol* signature = m->signature(); |
|
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4279 Klass* k = this_klass->super(); |
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4280 Method* super_m = NULL; |
| 0 | 4281 while (k != NULL) { |
| 4282 // skip supers that don't have final methods. | |
|
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4283 if (k->has_final_method()) { |
| 0 | 4284 // lookup a matching method in the super class hierarchy |
|
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4285 super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
| 0 | 4286 if (super_m == NULL) { |
| 4287 break; // didn't find any match; get out | |
| 4288 } | |
| 4289 | |
| 4290 if (super_m->is_final() && | |
| 4291 // matching method in super is final | |
|
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4292 (Reflection::verify_field_access(this_klass(), |
| 0 | 4293 super_m->method_holder(), |
| 4294 super_m->method_holder(), | |
| 4295 super_m->access_flags(), false)) | |
| 4296 // this class can access super final method and therefore override | |
| 4297 ) { | |
| 4298 ResourceMark rm(THREAD); | |
| 4299 Exceptions::fthrow( | |
| 4300 THREAD_AND_LOCATION, | |
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|
4301 vmSymbols::java_lang_VerifyError(), |
| 0 | 4302 "class %s overrides final method %s.%s", |
| 4303 this_klass->external_name(), | |
| 4304 name->as_C_string(), | |
| 4305 signature->as_C_string() | |
| 4306 ); | |
| 4307 return; | |
| 4308 } | |
| 4309 | |
| 4310 // continue to look from super_m's holder's super. | |
|
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|
4311 k = super_m->method_holder()->super(); |
| 0 | 4312 continue; |
| 4313 } | |
| 4314 | |
|
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|
4315 k = k->super(); |
| 0 | 4316 } |
| 4317 } | |
| 4318 } | |
| 4319 } | |
| 4320 | |
| 4321 | |
| 4322 // assumes that this_klass is an interface | |
| 4323 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
| 4324 assert(this_klass->is_interface(), "not an interface"); | |
|
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|
4325 Array<Method*>* methods = this_klass->methods(); |
| 0 | 4326 int num_methods = methods->length(); |
| 4327 | |
| 4328 for (int index = 0; index < num_methods; index++) { | |
|
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|
4329 Method* m = methods->at(index); |
| 0 | 4330 // if m is static and not the init method, throw a verify error |
| 4331 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
| 4332 ResourceMark rm(THREAD); | |
| 4333 Exceptions::fthrow( | |
| 4334 THREAD_AND_LOCATION, | |
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|
4335 vmSymbols::java_lang_VerifyError(), |
| 0 | 4336 "Illegal static method %s in interface %s", |
| 4337 m->name()->as_C_string(), | |
| 4338 this_klass->external_name() | |
| 4339 ); | |
| 4340 return; | |
| 4341 } | |
| 4342 } | |
| 4343 } | |
| 4344 | |
| 4345 // utility methods for format checking | |
| 4346 | |
| 4347 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
| 4348 if (!_need_verify) { return; } | |
| 4349 | |
| 4350 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
| 4351 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
| 4352 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4353 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
| 4354 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
| 4355 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
| 4356 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4357 | |
| 4358 if ((is_abstract && is_final) || | |
| 4359 (is_interface && !is_abstract) || | |
| 4360 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
| 4361 (!is_interface && major_gte_15 && is_annotation)) { | |
| 4362 ResourceMark rm(THREAD); | |
| 4363 Exceptions::fthrow( | |
| 4364 THREAD_AND_LOCATION, | |
|
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|
4365 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4366 "Illegal class modifiers in class %s: 0x%X", |
| 4367 _class_name->as_C_string(), flags | |
| 4368 ); | |
| 4369 return; | |
| 4370 } | |
| 4371 } | |
| 4372 | |
| 4373 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
| 4374 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4375 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
| 4376 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4377 | |
| 4378 return ((is_public && is_protected) || | |
| 4379 (is_public && is_private) || | |
| 4380 (is_protected && is_private)); | |
| 4381 } | |
| 4382 | |
| 4383 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
|
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|
4384 u2 max_version = |
|
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|
4385 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
|
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|
4386 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
| 0 | 4387 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
|
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|
4388 (major <= max_version) && |
|
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|
4389 ((major != max_version) || |
| 0 | 4390 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
| 4391 } | |
| 4392 | |
| 4393 void ClassFileParser::verify_legal_field_modifiers( | |
| 4394 jint flags, bool is_interface, TRAPS) { | |
| 4395 if (!_need_verify) { return; } | |
| 4396 | |
| 4397 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4398 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
| 4399 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4400 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
| 4401 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4402 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
| 4403 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
| 4404 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
| 4405 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4406 | |
| 4407 bool is_illegal = false; | |
| 4408 | |
| 4409 if (is_interface) { | |
| 4410 if (!is_public || !is_static || !is_final || is_private || | |
| 4411 is_protected || is_volatile || is_transient || | |
| 4412 (major_gte_15 && is_enum)) { | |
| 4413 is_illegal = true; | |
| 4414 } | |
| 4415 } else { // not interface | |
| 4416 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
| 4417 is_illegal = true; | |
| 4418 } | |
| 4419 } | |
| 4420 | |
| 4421 if (is_illegal) { | |
| 4422 ResourceMark rm(THREAD); | |
| 4423 Exceptions::fthrow( | |
| 4424 THREAD_AND_LOCATION, | |
|
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4425 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4426 "Illegal field modifiers in class %s: 0x%X", |
| 4427 _class_name->as_C_string(), flags); | |
| 4428 return; | |
| 4429 } | |
| 4430 } | |
| 4431 | |
| 4432 void ClassFileParser::verify_legal_method_modifiers( | |
|
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|
4433 jint flags, bool is_interface, Symbol* name, TRAPS) { |
| 0 | 4434 if (!_need_verify) { return; } |
| 4435 | |
| 4436 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4437 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4438 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
| 4439 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4440 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
| 4441 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
| 4442 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
| 4443 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
| 4444 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
| 4445 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 6934 | 4446 const bool major_gte_8 = _major_version >= JAVA_8_VERSION; |
| 0 | 4447 const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
| 4448 | |
| 4449 bool is_illegal = false; | |
| 4450 | |
| 4451 if (is_interface) { | |
| 6934 | 4452 if (!is_public || is_static || is_final || is_native || |
| 4453 ((is_synchronized || is_strict) && major_gte_15 && | |
| 4454 (!major_gte_8 || is_abstract)) || | |
| 4455 (!major_gte_8 && !is_abstract)) { | |
| 0 | 4456 is_illegal = true; |
| 4457 } | |
| 4458 } else { // not interface | |
| 4459 if (is_initializer) { | |
| 4460 if (is_static || is_final || is_synchronized || is_native || | |
| 4461 is_abstract || (major_gte_15 && is_bridge)) { | |
| 4462 is_illegal = true; | |
| 4463 } | |
| 4464 } else { // not initializer | |
| 4465 if (is_abstract) { | |
| 4466 if ((is_final || is_native || is_private || is_static || | |
| 4467 (major_gte_15 && (is_synchronized || is_strict)))) { | |
| 4468 is_illegal = true; | |
| 4469 } | |
| 4470 } | |
| 4471 if (has_illegal_visibility(flags)) { | |
| 4472 is_illegal = true; | |
| 4473 } | |
| 4474 } | |
| 4475 } | |
| 4476 | |
| 4477 if (is_illegal) { | |
| 4478 ResourceMark rm(THREAD); | |
| 4479 Exceptions::fthrow( | |
| 4480 THREAD_AND_LOCATION, | |
|
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|
4481 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4482 "Method %s in class %s has illegal modifiers: 0x%X", |
| 4483 name->as_C_string(), _class_name->as_C_string(), flags); | |
| 4484 return; | |
| 4485 } | |
| 4486 } | |
| 4487 | |
| 4488 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
| 4489 assert(_need_verify, "only called when _need_verify is true"); | |
| 4490 int i = 0; | |
| 4491 int count = length >> 2; | |
| 4492 for (int k=0; k<count; k++) { | |
| 4493 unsigned char b0 = buffer[i]; | |
| 4494 unsigned char b1 = buffer[i+1]; | |
| 4495 unsigned char b2 = buffer[i+2]; | |
| 4496 unsigned char b3 = buffer[i+3]; | |
| 4497 // For an unsigned char v, | |
| 4498 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
| 4499 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
| 4500 unsigned char res = b0 | b0 - 1 | | |
| 4501 b1 | b1 - 1 | | |
| 4502 b2 | b2 - 1 | | |
| 4503 b3 | b3 - 1; | |
| 4504 if (res >= 128) break; | |
| 4505 i += 4; | |
| 4506 } | |
| 4507 for(; i < length; i++) { | |
| 4508 unsigned short c; | |
| 4509 // no embedded zeros | |
| 4510 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4511 if(buffer[i] < 128) { | |
| 4512 continue; | |
| 4513 } | |
| 4514 if ((i + 5) < length) { // see if it's legal supplementary character | |
| 4515 if (UTF8::is_supplementary_character(&buffer[i])) { | |
| 4516 c = UTF8::get_supplementary_character(&buffer[i]); | |
| 4517 i += 5; | |
| 4518 continue; | |
| 4519 } | |
| 4520 } | |
| 4521 switch (buffer[i] >> 4) { | |
| 4522 default: break; | |
| 4523 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
| 4524 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4525 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
| 4526 c = (buffer[i] & 0x1F) << 6; | |
| 4527 i++; | |
| 4528 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
| 4529 c += buffer[i] & 0x3F; | |
| 4530 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
| 4531 // for classes with major > 47, c must a null or a character in its shortest form | |
| 4532 break; | |
| 4533 } | |
| 4534 } | |
| 4535 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4536 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
| 4537 c = (buffer[i] & 0xF) << 12; | |
| 4538 i += 2; | |
| 4539 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
| 4540 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
| 4541 if (_major_version <= 47 || c >= 0x800) { | |
| 4542 // for classes with major > 47, c must be in its shortest form | |
| 4543 break; | |
| 4544 } | |
| 4545 } | |
| 4546 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4547 } // end of switch | |
| 4548 } // end of for | |
| 4549 } | |
| 4550 | |
| 4551 // Checks if name is a legal class name. | |
|
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4552 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
| 0 | 4553 if (!_need_verify || _relax_verify) { return; } |
| 4554 | |
| 4555 char buf[fixed_buffer_size]; | |
| 4556 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4557 unsigned int length = name->utf8_length(); | |
| 4558 bool legal = false; | |
| 4559 | |
| 4560 if (length > 0) { | |
| 4561 char* p; | |
| 4562 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
| 4563 p = skip_over_field_signature(bytes, false, length, CHECK); | |
| 4564 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4565 } else if (_major_version < JAVA_1_5_VERSION) { | |
| 4566 if (bytes[0] != '<') { | |
| 4567 p = skip_over_field_name(bytes, true, length); | |
| 4568 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4569 } | |
| 4570 } else { | |
| 4571 // 4900761: relax the constraints based on JSR202 spec | |
| 4572 // Class names may be drawn from the entire Unicode character set. | |
| 4573 // Identifiers between '/' must be unqualified names. | |
| 4574 // The utf8 string has been verified when parsing cpool entries. | |
| 4575 legal = verify_unqualified_name(bytes, length, LegalClass); | |
| 4576 } | |
| 4577 } | |
| 4578 if (!legal) { | |
| 4579 ResourceMark rm(THREAD); | |
| 4580 Exceptions::fthrow( | |
| 4581 THREAD_AND_LOCATION, | |
|
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|
4582 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4583 "Illegal class name \"%s\" in class file %s", bytes, |
| 4584 _class_name->as_C_string() | |
| 4585 ); | |
| 4586 return; | |
| 4587 } | |
| 4588 } | |
| 4589 | |
| 4590 // Checks if name is a legal field name. | |
|
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|
4591 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
| 0 | 4592 if (!_need_verify || _relax_verify) { return; } |
| 4593 | |
| 4594 char buf[fixed_buffer_size]; | |
| 4595 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4596 unsigned int length = name->utf8_length(); | |
| 4597 bool legal = false; | |
| 4598 | |
| 4599 if (length > 0) { | |
| 4600 if (_major_version < JAVA_1_5_VERSION) { | |
| 4601 if (bytes[0] != '<') { | |
| 4602 char* p = skip_over_field_name(bytes, false, length); | |
| 4603 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4604 } | |
| 4605 } else { | |
| 4606 // 4881221: relax the constraints based on JSR202 spec | |
| 4607 legal = verify_unqualified_name(bytes, length, LegalField); | |
| 4608 } | |
| 4609 } | |
| 4610 | |
| 4611 if (!legal) { | |
| 4612 ResourceMark rm(THREAD); | |
| 4613 Exceptions::fthrow( | |
| 4614 THREAD_AND_LOCATION, | |
|
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|
4615 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4616 "Illegal field name \"%s\" in class %s", bytes, |
| 4617 _class_name->as_C_string() | |
| 4618 ); | |
| 4619 return; | |
| 4620 } | |
| 4621 } | |
| 4622 | |
| 4623 // Checks if name is a legal method name. | |
|
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|
4624 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
| 0 | 4625 if (!_need_verify || _relax_verify) { return; } |
| 4626 | |
|
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|
4627 assert(name != NULL, "method name is null"); |
| 0 | 4628 char buf[fixed_buffer_size]; |
| 4629 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4630 unsigned int length = name->utf8_length(); | |
| 4631 bool legal = false; | |
| 4632 | |
| 4633 if (length > 0) { | |
| 4634 if (bytes[0] == '<') { | |
| 4635 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
| 4636 legal = true; | |
| 4637 } | |
| 4638 } else if (_major_version < JAVA_1_5_VERSION) { | |
| 4639 char* p; | |
| 4640 p = skip_over_field_name(bytes, false, length); | |
| 4641 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4642 } else { | |
| 4643 // 4881221: relax the constraints based on JSR202 spec | |
| 4644 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
| 4645 } | |
| 4646 } | |
| 4647 | |
| 4648 if (!legal) { | |
| 4649 ResourceMark rm(THREAD); | |
| 4650 Exceptions::fthrow( | |
| 4651 THREAD_AND_LOCATION, | |
|
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|
4652 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4653 "Illegal method name \"%s\" in class %s", bytes, |
| 4654 _class_name->as_C_string() | |
| 4655 ); | |
| 4656 return; | |
| 4657 } | |
| 4658 } | |
| 4659 | |
| 4660 | |
| 4661 // Checks if signature is a legal field signature. | |
|
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|
4662 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 4663 if (!_need_verify) { return; } |
| 4664 | |
| 4665 char buf[fixed_buffer_size]; | |
| 4666 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4667 unsigned int length = signature->utf8_length(); | |
| 4668 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
| 4669 | |
| 4670 if (p == NULL || (p - bytes) != (int)length) { | |
|
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|
4671 throwIllegalSignature("Field", name, signature, CHECK); |
| 0 | 4672 } |
| 4673 } | |
| 4674 | |
| 4675 // Checks if signature is a legal method signature. | |
| 4676 // Returns number of parameters | |
|
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4677 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 4678 if (!_need_verify) { |
| 4679 // make sure caller's args_size will be less than 0 even for non-static | |
| 4680 // method so it will be recomputed in compute_size_of_parameters(). | |
| 4681 return -2; | |
| 4682 } | |
| 4683 | |
| 4684 unsigned int args_size = 0; | |
| 4685 char buf[fixed_buffer_size]; | |
| 4686 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4687 unsigned int length = signature->utf8_length(); | |
| 4688 char* nextp; | |
| 4689 | |
| 4690 // The first character must be a '(' | |
| 4691 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
| 4692 length--; | |
| 4693 // Skip over legal field signatures | |
| 4694 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
| 4695 while ((length > 0) && (nextp != NULL)) { | |
| 4696 args_size++; | |
| 4697 if (p[0] == 'J' || p[0] == 'D') { | |
| 4698 args_size++; | |
| 4699 } | |
| 4700 length -= nextp - p; | |
| 4701 p = nextp; | |
| 4702 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
| 4703 } | |
| 4704 // The first non-signature thing better be a ')' | |
| 4705 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
| 4706 length--; | |
| 4707 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
| 4708 // All internal methods must return void | |
| 4709 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
| 4710 return args_size; | |
| 4711 } | |
| 4712 } else { | |
| 4713 // Now we better just have a return value | |
| 4714 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
| 4715 if (nextp && ((int)length == (nextp - p))) { | |
| 4716 return args_size; | |
| 4717 } | |
| 4718 } | |
| 4719 } | |
| 4720 } | |
| 4721 // Report error | |
|
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|
4722 throwIllegalSignature("Method", name, signature, CHECK_0); |
| 0 | 4723 return 0; |
| 4724 } | |
| 4725 | |
| 4726 | |
|
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|
4727 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
|
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|
4728 // Method names also may not contain the characters '<' or '>', unless <init> |
|
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|
4729 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
|
6412b3805cd6
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|
4730 // method. Because these names have been checked as special cases before |
|
6412b3805cd6
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diff
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|
4731 // calling this method in verify_legal_method_name. |
|
6412b3805cd6
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|
4732 bool ClassFileParser::verify_unqualified_name( |
|
6412b3805cd6
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|
4733 char* name, unsigned int length, int type) { |
| 0 | 4734 jchar ch; |
| 4735 | |
| 4736 for (char* p = name; p != name + length; ) { | |
| 4737 ch = *p; | |
| 4738 if (ch < 128) { | |
| 4739 p++; | |
|
1881
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|
4740 if (ch == '.' || ch == ';' || ch == '[' ) { |
|
6412b3805cd6
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diff
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|
4741 return false; // do not permit '.', ';', or '[' |
| 0 | 4742 } |
| 4743 if (type != LegalClass && ch == '/') { | |
| 4744 return false; // do not permit '/' unless it's class name | |
| 4745 } | |
| 4746 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
| 4747 return false; // do not permit '<' or '>' in method names | |
| 4748 } | |
| 4749 } else { | |
| 4750 char* tmp_p = UTF8::next(p, &ch); | |
| 4751 p = tmp_p; | |
| 4752 } | |
| 4753 } | |
| 4754 return true; | |
| 4755 } | |
| 4756 | |
| 4757 | |
| 4758 // Take pointer to a string. Skip over the longest part of the string that could | |
| 4759 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
| 4760 // Return a pointer to just past the fieldname. | |
| 4761 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
| 4762 // being true, we saw consecutive slashes (meaning we were looking for a | |
| 4763 // qualified path but found something that was badly-formed). | |
| 4764 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
| 4765 char* p; | |
| 4766 jchar ch; | |
| 4767 jboolean last_is_slash = false; | |
| 4768 jboolean not_first_ch = false; | |
| 4769 | |
| 4770 for (p = name; p != name + length; not_first_ch = true) { | |
| 4771 char* old_p = p; | |
| 4772 ch = *p; | |
| 4773 if (ch < 128) { | |
| 4774 p++; | |
| 4775 // quick check for ascii | |
| 4776 if ((ch >= 'a' && ch <= 'z') || | |
| 4777 (ch >= 'A' && ch <= 'Z') || | |
| 4778 (ch == '_' || ch == '$') || | |
| 4779 (not_first_ch && ch >= '0' && ch <= '9')) { | |
| 4780 last_is_slash = false; | |
| 4781 continue; | |
| 4782 } | |
| 4783 if (slash_ok && ch == '/') { | |
| 4784 if (last_is_slash) { | |
| 4785 return NULL; // Don't permit consecutive slashes | |
| 4786 } | |
| 4787 last_is_slash = true; | |
| 4788 continue; | |
| 4789 } | |
| 4790 } else { | |
| 4791 jint unicode_ch; | |
| 4792 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
| 4793 p = tmp_p; | |
| 4794 last_is_slash = false; | |
| 4795 // Check if ch is Java identifier start or is Java identifier part | |
| 4796 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
| 4797 EXCEPTION_MARK; | |
| 1142 | 4798 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
| 0 | 4799 |
| 4800 // return value | |
| 4801 JavaValue result(T_BOOLEAN); | |
| 4802 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
| 4803 JavaCallArguments args; | |
| 4804 args.push_int(unicode_ch); | |
| 4805 | |
| 4806 // public static boolean isJavaIdentifierStart(char ch); | |
| 4807 JavaCalls::call_static(&result, | |
| 4808 klass, | |
|
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|
4809 vmSymbols::isJavaIdentifierStart_name(), |
|
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diff
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|
4810 vmSymbols::int_bool_signature(), |
| 0 | 4811 &args, |
| 4812 THREAD); | |
| 4813 | |
| 4814 if (HAS_PENDING_EXCEPTION) { | |
| 4815 CLEAR_PENDING_EXCEPTION; | |
| 4816 return 0; | |
| 4817 } | |
| 4818 if (result.get_jboolean()) { | |
| 4819 continue; | |
| 4820 } | |
| 4821 | |
| 4822 if (not_first_ch) { | |
| 4823 // public static boolean isJavaIdentifierPart(char ch); | |
| 4824 JavaCalls::call_static(&result, | |
| 4825 klass, | |
|
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|
4826 vmSymbols::isJavaIdentifierPart_name(), |
|
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2085
diff
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|
4827 vmSymbols::int_bool_signature(), |
| 0 | 4828 &args, |
| 4829 THREAD); | |
| 4830 | |
| 4831 if (HAS_PENDING_EXCEPTION) { | |
| 4832 CLEAR_PENDING_EXCEPTION; | |
| 4833 return 0; | |
| 4834 } | |
| 4835 | |
| 4836 if (result.get_jboolean()) { | |
| 4837 continue; | |
| 4838 } | |
| 4839 } | |
| 4840 } | |
| 4841 return (not_first_ch) ? old_p : NULL; | |
| 4842 } | |
| 4843 return (not_first_ch) ? p : NULL; | |
| 4844 } | |
| 4845 | |
| 4846 | |
| 4847 // Take pointer to a string. Skip over the longest part of the string that could | |
| 4848 // be taken as a field signature. Allow "void" if void_ok. | |
| 4849 // Return a pointer to just past the signature. | |
| 4850 // Return NULL if no legal signature is found. | |
| 4851 char* ClassFileParser::skip_over_field_signature(char* signature, | |
| 4852 bool void_ok, | |
| 4853 unsigned int length, | |
| 4854 TRAPS) { | |
| 4855 unsigned int array_dim = 0; | |
| 4856 while (length > 0) { | |
| 4857 switch (signature[0]) { | |
| 4858 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
| 4859 case JVM_SIGNATURE_BOOLEAN: | |
| 4860 case JVM_SIGNATURE_BYTE: | |
| 4861 case JVM_SIGNATURE_CHAR: | |
| 4862 case JVM_SIGNATURE_SHORT: | |
| 4863 case JVM_SIGNATURE_INT: | |
| 4864 case JVM_SIGNATURE_FLOAT: | |
| 4865 case JVM_SIGNATURE_LONG: | |
| 4866 case JVM_SIGNATURE_DOUBLE: | |
| 4867 return signature + 1; | |
| 4868 case JVM_SIGNATURE_CLASS: { | |
| 4869 if (_major_version < JAVA_1_5_VERSION) { | |
| 4870 // Skip over the class name if one is there | |
| 4871 char* p = skip_over_field_name(signature + 1, true, --length); | |
| 4872 | |
| 4873 // The next character better be a semicolon | |
| 4874 if (p && (p - signature) > 1 && p[0] == ';') { | |
| 4875 return p + 1; | |
| 4876 } | |
| 4877 } else { | |
| 4878 // 4900761: For class version > 48, any unicode is allowed in class name. | |
| 4879 length--; | |
| 4880 signature++; | |
| 4881 while (length > 0 && signature[0] != ';') { | |
| 4882 if (signature[0] == '.') { | |
| 4883 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
| 4884 } | |
| 4885 length--; | |
| 4886 signature++; | |
| 4887 } | |
| 4888 if (signature[0] == ';') { return signature + 1; } | |
| 4889 } | |
| 4890 | |
| 4891 return NULL; | |
| 4892 } | |
| 4893 case JVM_SIGNATURE_ARRAY: | |
| 4894 array_dim++; | |
| 4895 if (array_dim > 255) { | |
| 4896 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
| 4897 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
| 4898 } | |
| 4899 // The rest of what's there better be a legal signature | |
| 4900 signature++; | |
| 4901 length--; | |
| 4902 void_ok = false; | |
| 4903 break; | |
| 4904 | |
| 4905 default: | |
| 4906 return NULL; | |
| 4907 } | |
| 4908 } | |
| 4909 return NULL; | |
| 4910 } |