Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | aed758eda82a |
| 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" |
| 1972 | 30 #include "classfile/javaClasses.hpp" |
| 31 #include "classfile/symbolTable.hpp" | |
| 32 #include "classfile/systemDictionary.hpp" | |
| 33 #include "classfile/verificationType.hpp" | |
| 34 #include "classfile/verifier.hpp" | |
| 35 #include "classfile/vmSymbols.hpp" | |
| 36 #include "memory/allocation.hpp" | |
| 37 #include "memory/gcLocker.hpp" | |
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38 #include "memory/metadataFactory.hpp" |
| 1972 | 39 #include "memory/oopFactory.hpp" |
| 40 #include "memory/universe.inline.hpp" | |
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41 #include "oops/constantPool.hpp" |
| 3938 | 42 #include "oops/fieldStreams.hpp" |
| 1972 | 43 #include "oops/instanceKlass.hpp" |
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44 #include "oops/instanceMirrorKlass.hpp" |
| 1972 | 45 #include "oops/klass.inline.hpp" |
| 46 #include "oops/klassVtable.hpp" | |
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47 #include "oops/method.hpp" |
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48 #include "oops/symbol.hpp" |
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49 #include "prims/jvm.h" |
| 1972 | 50 #include "prims/jvmtiExport.hpp" |
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51 #include "prims/jvmtiThreadState.hpp" |
| 1972 | 52 #include "runtime/javaCalls.hpp" |
| 53 #include "runtime/perfData.hpp" | |
| 54 #include "runtime/reflection.hpp" | |
| 55 #include "runtime/signature.hpp" | |
| 56 #include "runtime/timer.hpp" | |
| 57 #include "services/classLoadingService.hpp" | |
| 58 #include "services/threadService.hpp" | |
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59 #include "utilities/array.hpp" |
| 0 | 60 |
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61 // We generally try to create the oops directly when parsing, rather than |
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62 // allocating temporary data structures and copying the bytes twice. A |
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63 // temporary area is only needed when parsing utf8 entries in the constant |
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64 // pool and when parsing line number tables. |
| 0 | 65 |
| 66 // We add assert in debug mode when class format is not checked. | |
| 67 | |
| 68 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
| 69 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
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70 #define JAVA_MAX_SUPPORTED_VERSION 51 |
| 0 | 71 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
| 72 | |
| 73 // Used for two backward compatibility reasons: | |
| 74 // - to check for new additions to the class file format in JDK1.5 | |
| 75 // - to check for bug fixes in the format checker in JDK1.5 | |
| 76 #define JAVA_1_5_VERSION 49 | |
| 77 | |
| 78 // Used for backward compatibility reasons: | |
| 79 // - to check for javac bug fixes that happened after 1.5 | |
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80 // - also used as the max version when running in jdk6 |
| 0 | 81 #define JAVA_6_VERSION 50 |
| 82 | |
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83 // Used for backward compatibility reasons: |
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84 // - to check NameAndType_info signatures more aggressively |
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85 #define JAVA_7_VERSION 51 |
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86 |
| 0 | 87 |
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88 void ClassFileParser::parse_constant_pool_entries(ClassLoaderData* loader_data, constantPoolHandle cp, int length, TRAPS) { |
| 0 | 89 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
| 90 // this function (_current can be allocated in a register, with scalar | |
| 91 // replacement of aggregates). The _current pointer is copied back to | |
| 92 // stream() when this function returns. DON'T call another method within | |
| 93 // this method that uses stream(). | |
| 94 ClassFileStream* cfs0 = stream(); | |
| 95 ClassFileStream cfs1 = *cfs0; | |
| 96 ClassFileStream* cfs = &cfs1; | |
| 97 #ifdef ASSERT | |
| 1685 | 98 assert(cfs->allocated_on_stack(),"should be local"); |
| 0 | 99 u1* old_current = cfs0->current(); |
| 100 #endif | |
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101 Handle class_loader(THREAD, loader_data->class_loader()); |
| 0 | 102 |
| 103 // Used for batching symbol allocations. | |
| 104 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
| 105 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
| 106 int indices[SymbolTable::symbol_alloc_batch_size]; | |
| 107 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
| 108 int names_count = 0; | |
| 109 | |
| 110 // parsing Index 0 is unused | |
| 111 for (int index = 1; index < length; index++) { | |
| 112 // Each of the following case guarantees one more byte in the stream | |
| 113 // for the following tag or the access_flags following constant pool, | |
| 114 // so we don't need bounds-check for reading tag. | |
| 115 u1 tag = cfs->get_u1_fast(); | |
| 116 switch (tag) { | |
| 117 case JVM_CONSTANT_Class : | |
| 118 { | |
| 119 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
| 120 u2 name_index = cfs->get_u2_fast(); | |
| 121 cp->klass_index_at_put(index, name_index); | |
| 122 } | |
| 123 break; | |
| 124 case JVM_CONSTANT_Fieldref : | |
| 125 { | |
| 126 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 127 u2 class_index = cfs->get_u2_fast(); | |
| 128 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 129 cp->field_at_put(index, class_index, name_and_type_index); | |
| 130 } | |
| 131 break; | |
| 132 case JVM_CONSTANT_Methodref : | |
| 133 { | |
| 134 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 135 u2 class_index = cfs->get_u2_fast(); | |
| 136 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 137 cp->method_at_put(index, class_index, name_and_type_index); | |
| 138 } | |
| 139 break; | |
| 140 case JVM_CONSTANT_InterfaceMethodref : | |
| 141 { | |
| 142 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 143 u2 class_index = cfs->get_u2_fast(); | |
| 144 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 145 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
| 146 } | |
| 147 break; | |
| 148 case JVM_CONSTANT_String : | |
| 149 { | |
| 150 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
| 151 u2 string_index = cfs->get_u2_fast(); | |
| 152 cp->string_index_at_put(index, string_index); | |
| 153 } | |
| 154 break; | |
| 1602 | 155 case JVM_CONSTANT_MethodHandle : |
| 156 case JVM_CONSTANT_MethodType : | |
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157 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
| 1602 | 158 classfile_parse_error( |
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159 "Class file version does not support constant tag %u in class file %s", |
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160 tag, CHECK); |
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161 } |
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162 if (!EnableInvokeDynamic) { |
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163 classfile_parse_error( |
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164 "This JVM does not support constant tag %u in class file %s", |
| 1602 | 165 tag, CHECK); |
| 166 } | |
| 167 if (tag == JVM_CONSTANT_MethodHandle) { | |
| 168 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
| 169 u1 ref_kind = cfs->get_u1_fast(); | |
| 170 u2 method_index = cfs->get_u2_fast(); | |
| 171 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
| 172 } else if (tag == JVM_CONSTANT_MethodType) { | |
| 173 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
| 174 u2 signature_index = cfs->get_u2_fast(); | |
| 175 cp->method_type_index_at_put(index, signature_index); | |
| 176 } else { | |
| 177 ShouldNotReachHere(); | |
| 178 } | |
| 179 break; | |
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180 case JVM_CONSTANT_InvokeDynamic : |
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181 { |
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182 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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183 classfile_parse_error( |
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184 "Class file version does not support constant tag %u in class file %s", |
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185 tag, CHECK); |
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186 } |
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187 if (!EnableInvokeDynamic) { |
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188 classfile_parse_error( |
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189 "This JVM 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 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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193 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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194 u2 name_and_type_index = cfs->get_u2_fast(); |
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195 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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196 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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197 cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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198 } |
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199 break; |
| 0 | 200 case JVM_CONSTANT_Integer : |
| 201 { | |
| 202 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
| 203 u4 bytes = cfs->get_u4_fast(); | |
| 204 cp->int_at_put(index, (jint) bytes); | |
| 205 } | |
| 206 break; | |
| 207 case JVM_CONSTANT_Float : | |
| 208 { | |
| 209 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
| 210 u4 bytes = cfs->get_u4_fast(); | |
| 211 cp->float_at_put(index, *(jfloat*)&bytes); | |
| 212 } | |
| 213 break; | |
| 214 case JVM_CONSTANT_Long : | |
| 215 // A mangled type might cause you to overrun allocated memory | |
| 216 guarantee_property(index+1 < length, | |
| 217 "Invalid constant pool entry %u in class file %s", | |
| 218 index, CHECK); | |
| 219 { | |
| 220 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
| 221 u8 bytes = cfs->get_u8_fast(); | |
| 222 cp->long_at_put(index, bytes); | |
| 223 } | |
| 224 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
| 225 break; | |
| 226 case JVM_CONSTANT_Double : | |
| 227 // A mangled type might cause you to overrun allocated memory | |
| 228 guarantee_property(index+1 < length, | |
| 229 "Invalid constant pool entry %u in class file %s", | |
| 230 index, CHECK); | |
| 231 { | |
| 232 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
| 233 u8 bytes = cfs->get_u8_fast(); | |
| 234 cp->double_at_put(index, *(jdouble*)&bytes); | |
| 235 } | |
| 236 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
| 237 break; | |
| 238 case JVM_CONSTANT_NameAndType : | |
| 239 { | |
| 240 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
| 241 u2 name_index = cfs->get_u2_fast(); | |
| 242 u2 signature_index = cfs->get_u2_fast(); | |
| 243 cp->name_and_type_at_put(index, name_index, signature_index); | |
| 244 } | |
| 245 break; | |
| 246 case JVM_CONSTANT_Utf8 : | |
| 247 { | |
| 248 cfs->guarantee_more(2, CHECK); // utf8_length | |
| 249 u2 utf8_length = cfs->get_u2_fast(); | |
| 250 u1* utf8_buffer = cfs->get_u1_buffer(); | |
| 251 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
| 252 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
| 253 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
| 254 cfs->skip_u1_fast(utf8_length); | |
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255 |
| 0 | 256 // Before storing the symbol, make sure it's legal |
| 257 if (_need_verify) { | |
| 258 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
| 259 } | |
| 260 | |
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261 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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262 Handle patch = clear_cp_patch_at(index); |
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263 guarantee_property(java_lang_String::is_instance(patch()), |
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264 "Illegal utf8 patch at %d in class file %s", |
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265 index, CHECK); |
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266 char* str = java_lang_String::as_utf8_string(patch()); |
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267 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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268 utf8_buffer = (u1*) str; |
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269 utf8_length = (int) strlen(str); |
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270 } |
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271 |
| 0 | 272 unsigned int hash; |
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273 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
| 0 | 274 if (result == NULL) { |
| 275 names[names_count] = (char*)utf8_buffer; | |
| 276 lengths[names_count] = utf8_length; | |
| 277 indices[names_count] = index; | |
| 278 hashValues[names_count++] = hash; | |
| 279 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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280 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
| 0 | 281 names_count = 0; |
| 282 } | |
| 283 } else { | |
| 284 cp->symbol_at_put(index, result); | |
| 285 } | |
| 286 } | |
| 287 break; | |
| 288 default: | |
| 289 classfile_parse_error( | |
| 290 "Unknown constant tag %u in class file %s", tag, CHECK); | |
| 291 break; | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 // Allocate the remaining symbols | |
| 296 if (names_count > 0) { | |
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297 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
| 0 | 298 } |
| 299 | |
| 300 // Copy _current pointer of local copy back to stream(). | |
| 301 #ifdef ASSERT | |
| 302 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
| 303 #endif | |
| 304 cfs0->set_current(cfs1.current()); | |
| 305 } | |
| 306 | |
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307 // This class unreferences constant pool symbols if an error has occurred |
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308 // while parsing the class before it is assigned into the class. |
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309 // If it gets an error after that it is unloaded and the constant pool will |
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310 // be cleaned up then. |
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311 class ConstantPoolCleaner : public StackObj { |
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312 constantPoolHandle _cphandle; |
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313 bool _in_error; |
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314 public: |
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315 ConstantPoolCleaner(constantPoolHandle cp) : _cphandle(cp), _in_error(true) {} |
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316 ~ConstantPoolCleaner() { |
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317 if (_in_error && _cphandle.not_null()) { |
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318 _cphandle->unreference_symbols(); |
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319 } |
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320 } |
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321 void set_in_error(bool clean) { _in_error = clean; } |
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322 }; |
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323 |
| 0 | 324 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
| 325 | |
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326 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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327 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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328 return cp->symbol_at(index); |
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329 else |
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330 return NULL; |
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331 } |
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332 |
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333 constantPoolHandle ClassFileParser::parse_constant_pool(ClassLoaderData* loader_data, TRAPS) { |
| 0 | 334 ClassFileStream* cfs = stream(); |
| 335 constantPoolHandle nullHandle; | |
| 336 | |
| 337 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
| 338 u2 length = cfs->get_u2_fast(); | |
| 339 guarantee_property( | |
| 340 length >= 1, "Illegal constant pool size %u in class file %s", | |
| 341 length, CHECK_(nullHandle)); | |
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342 ConstantPool* constant_pool = |
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343 ConstantPool::allocate(loader_data, |
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344 length, |
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345 CHECK_(nullHandle)); |
| 0 | 346 constantPoolHandle cp (THREAD, constant_pool); |
| 347 | |
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348 ConstantPoolCleaner cp_in_error(cp); // set constant pool to be cleaned up. |
| 0 | 349 |
| 350 // parsing constant pool entries | |
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351 parse_constant_pool_entries(loader_data, cp, length, CHECK_(nullHandle)); |
| 0 | 352 |
| 353 int index = 1; // declared outside of loops for portability | |
| 354 | |
| 355 // first verification pass - validate cross references and fixup class and string constants | |
| 356 for (index = 1; index < length; index++) { // Index 0 is unused | |
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357 jbyte tag = cp->tag_at(index).value(); |
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358 switch (tag) { |
| 0 | 359 case JVM_CONSTANT_Class : |
| 360 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
| 361 break; | |
| 362 case JVM_CONSTANT_Fieldref : | |
| 363 // fall through | |
| 364 case JVM_CONSTANT_Methodref : | |
| 365 // fall through | |
| 366 case JVM_CONSTANT_InterfaceMethodref : { | |
| 367 if (!_need_verify) break; | |
| 368 int klass_ref_index = cp->klass_ref_index_at(index); | |
| 369 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
| 370 check_property(valid_cp_range(klass_ref_index, length) && | |
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371 is_klass_reference(cp, klass_ref_index), |
| 0 | 372 "Invalid constant pool index %u in class file %s", |
| 373 klass_ref_index, | |
| 374 CHECK_(nullHandle)); | |
| 375 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
| 376 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
| 377 "Invalid constant pool index %u in class file %s", | |
| 378 name_and_type_ref_index, | |
| 379 CHECK_(nullHandle)); | |
| 380 break; | |
| 381 } | |
| 382 case JVM_CONSTANT_String : | |
| 383 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
| 384 break; | |
| 385 case JVM_CONSTANT_Integer : | |
| 386 break; | |
| 387 case JVM_CONSTANT_Float : | |
| 388 break; | |
| 389 case JVM_CONSTANT_Long : | |
| 390 case JVM_CONSTANT_Double : | |
| 391 index++; | |
| 392 check_property( | |
| 393 (index < length && cp->tag_at(index).is_invalid()), | |
| 394 "Improper constant pool long/double index %u in class file %s", | |
| 395 index, CHECK_(nullHandle)); | |
| 396 break; | |
| 397 case JVM_CONSTANT_NameAndType : { | |
| 398 if (!_need_verify) break; | |
| 399 int name_ref_index = cp->name_ref_index_at(index); | |
| 400 int signature_ref_index = cp->signature_ref_index_at(index); | |
| 401 check_property( | |
| 402 valid_cp_range(name_ref_index, length) && | |
| 403 cp->tag_at(name_ref_index).is_utf8(), | |
| 404 "Invalid constant pool index %u in class file %s", | |
| 405 name_ref_index, CHECK_(nullHandle)); | |
| 406 check_property( | |
| 407 valid_cp_range(signature_ref_index, length) && | |
| 408 cp->tag_at(signature_ref_index).is_utf8(), | |
| 409 "Invalid constant pool index %u in class file %s", | |
| 410 signature_ref_index, CHECK_(nullHandle)); | |
| 411 break; | |
| 412 } | |
| 413 case JVM_CONSTANT_Utf8 : | |
| 414 break; | |
| 415 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
| 416 case JVM_CONSTANT_UnresolvedClassInError: | |
| 417 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
| 418 break; | |
| 419 case JVM_CONSTANT_ClassIndex : | |
| 420 { | |
| 421 int class_index = cp->klass_index_at(index); | |
| 422 check_property( | |
| 423 valid_cp_range(class_index, length) && | |
| 424 cp->tag_at(class_index).is_utf8(), | |
| 425 "Invalid constant pool index %u in class file %s", | |
| 426 class_index, CHECK_(nullHandle)); | |
| 427 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
| 428 } | |
| 429 break; | |
| 430 case JVM_CONSTANT_StringIndex : | |
| 431 { | |
| 432 int string_index = cp->string_index_at(index); | |
| 433 check_property( | |
| 434 valid_cp_range(string_index, length) && | |
| 435 cp->tag_at(string_index).is_utf8(), | |
| 436 "Invalid constant pool index %u in class file %s", | |
| 437 string_index, CHECK_(nullHandle)); | |
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438 Symbol* sym = cp->symbol_at(string_index); |
| 0 | 439 cp->unresolved_string_at_put(index, sym); |
| 440 } | |
| 441 break; | |
| 1602 | 442 case JVM_CONSTANT_MethodHandle : |
| 443 { | |
| 444 int ref_index = cp->method_handle_index_at(index); | |
| 445 check_property( | |
| 446 valid_cp_range(ref_index, length) && | |
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447 EnableInvokeDynamic, |
| 1602 | 448 "Invalid constant pool index %u in class file %s", |
| 449 ref_index, CHECK_(nullHandle)); | |
| 450 constantTag tag = cp->tag_at(ref_index); | |
| 451 int ref_kind = cp->method_handle_ref_kind_at(index); | |
| 452 switch (ref_kind) { | |
| 453 case JVM_REF_getField: | |
| 454 case JVM_REF_getStatic: | |
| 455 case JVM_REF_putField: | |
| 456 case JVM_REF_putStatic: | |
| 457 check_property( | |
| 458 tag.is_field(), | |
| 459 "Invalid constant pool index %u in class file %s (not a field)", | |
| 460 ref_index, CHECK_(nullHandle)); | |
| 461 break; | |
| 462 case JVM_REF_invokeVirtual: | |
| 463 case JVM_REF_invokeStatic: | |
| 464 case JVM_REF_invokeSpecial: | |
| 465 case JVM_REF_newInvokeSpecial: | |
| 466 check_property( | |
| 467 tag.is_method(), | |
| 468 "Invalid constant pool index %u in class file %s (not a method)", | |
| 469 ref_index, CHECK_(nullHandle)); | |
| 470 break; | |
| 471 case JVM_REF_invokeInterface: | |
| 472 check_property( | |
| 473 tag.is_interface_method(), | |
| 474 "Invalid constant pool index %u in class file %s (not an interface method)", | |
| 475 ref_index, CHECK_(nullHandle)); | |
| 476 break; | |
| 477 default: | |
| 478 classfile_parse_error( | |
| 479 "Bad method handle kind at constant pool index %u in class file %s", | |
| 480 index, CHECK_(nullHandle)); | |
| 481 } | |
| 482 // Keep the ref_index unchanged. It will be indirected at link-time. | |
| 483 } | |
| 484 break; | |
| 485 case JVM_CONSTANT_MethodType : | |
| 486 { | |
| 487 int ref_index = cp->method_type_index_at(index); | |
| 488 check_property( | |
| 489 valid_cp_range(ref_index, length) && | |
| 490 cp->tag_at(ref_index).is_utf8() && | |
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491 EnableInvokeDynamic, |
| 1602 | 492 "Invalid constant pool index %u in class file %s", |
| 493 ref_index, CHECK_(nullHandle)); | |
| 494 } | |
| 495 break; | |
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496 case JVM_CONSTANT_InvokeDynamic : |
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497 { |
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498 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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499 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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500 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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501 "Invalid constant pool index %u in class file %s", |
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502 name_and_type_ref_index, |
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503 CHECK_(nullHandle)); |
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504 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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505 break; |
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506 } |
| 0 | 507 default: |
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508 fatal(err_msg("bad constant pool tag value %u", |
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509 cp->tag_at(index).value())); |
| 0 | 510 ShouldNotReachHere(); |
| 511 break; | |
| 512 } // end of switch | |
| 513 } // end of for | |
| 514 | |
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515 if (_cp_patches != NULL) { |
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516 // need to treat this_class specially... |
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517 assert(EnableInvokeDynamic, ""); |
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518 int this_class_index; |
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519 { |
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520 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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521 u1* mark = cfs->current(); |
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522 u2 flags = cfs->get_u2_fast(); |
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523 this_class_index = cfs->get_u2_fast(); |
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524 cfs->set_current(mark); // revert to mark |
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525 } |
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526 |
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527 for (index = 1; index < length; index++) { // Index 0 is unused |
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528 if (has_cp_patch_at(index)) { |
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529 guarantee_property(index != this_class_index, |
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530 "Illegal constant pool patch to self at %d in class file %s", |
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531 index, CHECK_(nullHandle)); |
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532 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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533 } |
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534 } |
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535 } |
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536 |
| 0 | 537 if (!_need_verify) { |
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538 cp_in_error.set_in_error(false); |
| 0 | 539 return cp; |
| 540 } | |
| 541 | |
| 542 // second verification pass - checks the strings are of the right format. | |
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543 // but not yet to the other entries |
| 0 | 544 for (index = 1; index < length; index++) { |
| 545 jbyte tag = cp->tag_at(index).value(); | |
| 546 switch (tag) { | |
| 547 case JVM_CONSTANT_UnresolvedClass: { | |
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548 Symbol* class_name = cp->unresolved_klass_at(index); |
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549 // check the name, even if _cp_patches will overwrite it |
| 0 | 550 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
| 551 break; | |
| 552 } | |
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553 case JVM_CONSTANT_NameAndType: { |
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554 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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555 int sig_index = cp->signature_ref_index_at(index); |
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556 int name_index = cp->name_ref_index_at(index); |
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557 Symbol* name = cp->symbol_at(name_index); |
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558 Symbol* sig = cp->symbol_at(sig_index); |
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559 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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560 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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561 } else { |
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562 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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563 } |
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564 } |
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565 break; |
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566 } |
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567 case JVM_CONSTANT_InvokeDynamic: |
| 0 | 568 case JVM_CONSTANT_Fieldref: |
| 569 case JVM_CONSTANT_Methodref: | |
| 570 case JVM_CONSTANT_InterfaceMethodref: { | |
| 571 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
| 572 // already verified to be utf8 | |
| 573 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
| 574 // already verified to be utf8 | |
| 575 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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576 Symbol* name = cp->symbol_at(name_ref_index); |
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577 Symbol* signature = cp->symbol_at(signature_ref_index); |
| 0 | 578 if (tag == JVM_CONSTANT_Fieldref) { |
| 579 verify_legal_field_name(name, CHECK_(nullHandle)); | |
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580 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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581 // Signature is verified above, when iterating NameAndType_info. |
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582 // Need only to be sure it's the right type. |
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583 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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584 throwIllegalSignature( |
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585 "Field", name, signature, CHECK_(nullHandle)); |
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586 } |
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587 } else { |
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588 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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589 } |
| 0 | 590 } else { |
| 591 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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592 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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593 // Signature is verified above, when iterating NameAndType_info. |
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594 // Need only to be sure it's the right type. |
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595 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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596 throwIllegalSignature( |
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597 "Method", name, signature, CHECK_(nullHandle)); |
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598 } |
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599 } else { |
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600 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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601 } |
| 0 | 602 if (tag == JVM_CONSTANT_Methodref) { |
| 603 // 4509014: If a class method name begins with '<', it must be "<init>". | |
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604 assert(name != NULL, "method name in constant pool is null"); |
| 0 | 605 unsigned int name_len = name->utf8_length(); |
| 606 assert(name_len > 0, "bad method name"); // already verified as legal name | |
| 607 if (name->byte_at(0) == '<') { | |
|
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608 if (name != vmSymbols::object_initializer_name()) { |
| 0 | 609 classfile_parse_error( |
| 610 "Bad method name at constant pool index %u in class file %s", | |
| 611 name_ref_index, CHECK_(nullHandle)); | |
| 612 } | |
| 613 } | |
| 614 } | |
| 615 } | |
| 616 break; | |
| 617 } | |
| 1602 | 618 case JVM_CONSTANT_MethodHandle: { |
| 619 int ref_index = cp->method_handle_index_at(index); | |
| 620 int ref_kind = cp->method_handle_ref_kind_at(index); | |
| 621 switch (ref_kind) { | |
| 622 case JVM_REF_invokeVirtual: | |
| 623 case JVM_REF_invokeStatic: | |
| 624 case JVM_REF_invokeSpecial: | |
| 625 case JVM_REF_newInvokeSpecial: | |
| 626 { | |
| 627 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
| 628 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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629 Symbol* name = cp->symbol_at(name_ref_index); |
| 1602 | 630 if (ref_kind == JVM_REF_newInvokeSpecial) { |
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631 if (name != vmSymbols::object_initializer_name()) { |
| 1602 | 632 classfile_parse_error( |
| 633 "Bad constructor name at constant pool index %u in class file %s", | |
| 634 name_ref_index, CHECK_(nullHandle)); | |
| 635 } | |
| 636 } else { | |
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637 if (name == vmSymbols::object_initializer_name()) { |
| 1602 | 638 classfile_parse_error( |
| 639 "Bad method name at constant pool index %u in class file %s", | |
| 640 name_ref_index, CHECK_(nullHandle)); | |
| 641 } | |
| 642 } | |
| 643 } | |
| 644 break; | |
| 645 // Other ref_kinds are already fully checked in previous pass. | |
| 646 } | |
| 647 break; | |
| 648 } | |
| 649 case JVM_CONSTANT_MethodType: { | |
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650 Symbol* no_name = vmSymbols::type_name(); // place holder |
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651 Symbol* signature = cp->method_type_signature_at(index); |
| 1602 | 652 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
| 653 break; | |
| 654 } | |
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655 case JVM_CONSTANT_Utf8: { |
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656 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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657 } |
| 0 | 658 } // end of switch |
| 659 } // end of for | |
| 660 | |
|
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661 cp_in_error.set_in_error(false); |
| 0 | 662 return cp; |
| 663 } | |
| 664 | |
| 665 | |
|
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666 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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667 assert(EnableInvokeDynamic, ""); |
|
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668 BasicType patch_type = T_VOID; |
|
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669 |
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670 switch (cp->tag_at(index).value()) { |
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671 |
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672 case JVM_CONSTANT_UnresolvedClass : |
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673 // Patching a class means pre-resolving it. |
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674 // The name in the constant pool is ignored. |
| 1602 | 675 if (java_lang_Class::is_instance(patch())) { |
|
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676 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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677 "Illegal class patch at %d in class file %s", |
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678 index, CHECK); |
|
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679 cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
|
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680 } else { |
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681 guarantee_property(java_lang_String::is_instance(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 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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685 cp->unresolved_klass_at_put(index, name); |
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686 } |
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687 break; |
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688 |
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689 case JVM_CONSTANT_String : |
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690 // skip this patch and don't clear it. Needs the oop array for resolved |
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691 // references to be created first. |
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692 return; |
|
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693 |
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694 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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695 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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696 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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697 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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698 patch_prim: |
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699 { |
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700 jvalue value; |
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701 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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702 guarantee_property(value_type == patch_type, |
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703 "Illegal primitive patch at %d in class file %s", |
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704 index, CHECK); |
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705 switch (value_type) { |
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706 case T_INT: cp->int_at_put(index, value.i); break; |
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707 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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708 case T_LONG: cp->long_at_put(index, value.j); break; |
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709 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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710 default: assert(false, ""); |
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711 } |
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712 } |
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713 break; |
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714 |
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715 default: |
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716 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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717 guarantee_property(!has_cp_patch_at(index), |
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718 "Illegal unexpected patch at %d in class file %s", |
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719 index, CHECK); |
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720 return; |
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721 } |
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722 |
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723 // On fall-through, mark the patch as used. |
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724 clear_cp_patch_at(index); |
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725 } |
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726 |
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727 |
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728 |
| 0 | 729 class NameSigHash: public ResourceObj { |
| 730 public: | |
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731 Symbol* _name; // name |
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732 Symbol* _sig; // signature |
| 0 | 733 NameSigHash* _next; // Next entry in hash table |
| 734 }; | |
| 735 | |
| 736 | |
| 737 #define HASH_ROW_SIZE 256 | |
| 738 | |
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739 unsigned int hash(Symbol* name, Symbol* sig) { |
| 0 | 740 unsigned int raw_hash = 0; |
| 741 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
| 742 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
| 743 | |
| 744 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
| 745 } | |
| 746 | |
| 747 | |
| 748 void initialize_hashtable(NameSigHash** table) { | |
| 749 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
| 750 } | |
| 751 | |
| 752 // Return false if the name/sig combination is found in table. | |
| 753 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
| 754 // The old format checker uses heap sort to find duplicates. | |
| 755 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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756 // of table since we don't expect Symbol*'s to move. |
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757 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
| 0 | 758 assert(name != NULL, "name in constant pool is NULL"); |
| 759 | |
| 760 // First lookup for duplicates | |
| 761 int index = hash(name, sig); | |
| 762 NameSigHash* entry = table[index]; | |
| 763 while (entry != NULL) { | |
| 764 if (entry->_name == name && entry->_sig == sig) { | |
| 765 return false; | |
| 766 } | |
| 767 entry = entry->_next; | |
| 768 } | |
| 769 | |
| 770 // No duplicate is found, allocate a new entry and fill it. | |
| 771 entry = new NameSigHash(); | |
| 772 entry->_name = name; | |
| 773 entry->_sig = sig; | |
| 774 | |
| 775 // Insert into hash table | |
| 776 entry->_next = table[index]; | |
| 777 table[index] = entry; | |
| 778 | |
| 779 return true; | |
| 780 } | |
| 781 | |
| 782 | |
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783 Array<Klass*>* ClassFileParser::parse_interfaces(constantPoolHandle cp, |
| 0 | 784 int length, |
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785 ClassLoaderData* loader_data, |
| 0 | 786 Handle protection_domain, |
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787 Symbol* class_name, |
| 0 | 788 TRAPS) { |
| 789 ClassFileStream* cfs = stream(); | |
| 790 assert(length > 0, "only called for length>0"); | |
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791 // FIXME: Leak at later OOM. |
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792 Array<Klass*>* interfaces = MetadataFactory::new_array<Klass*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 793 |
| 794 int index; | |
| 795 for (index = 0; index < length; index++) { | |
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796 u2 interface_index = cfs->get_u2(CHECK_NULL); |
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797 KlassHandle interf; |
| 0 | 798 check_property( |
| 799 valid_cp_range(interface_index, cp->length()) && | |
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800 is_klass_reference(cp, interface_index), |
| 0 | 801 "Interface name has bad constant pool index %u in class file %s", |
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802 interface_index, CHECK_NULL); |
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803 if (cp->tag_at(interface_index).is_klass()) { |
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804 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
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805 } else { |
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806 Symbol* unresolved_klass = cp->klass_name_at(interface_index); |
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807 |
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808 // Don't need to check legal name because it's checked when parsing constant pool. |
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809 // But need to make sure it's not an array type. |
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810 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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811 "Bad interface name in class file %s", CHECK_NULL); |
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812 Handle class_loader(THREAD, loader_data->class_loader()); |
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813 |
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814 // Call resolve_super so classcircularity is checked |
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815 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
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816 unresolved_klass, class_loader, protection_domain, |
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817 false, CHECK_NULL); |
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818 interf = KlassHandle(THREAD, k); |
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819 |
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820 if (LinkWellKnownClasses) // my super type is well known to me |
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821 cp->klass_at_put(interface_index, interf()); // eagerly resolve |
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822 } |
| 0 | 823 |
| 824 if (!Klass::cast(interf())->is_interface()) { | |
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825 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
| 0 | 826 } |
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827 interfaces->at_put(index, interf()); |
| 0 | 828 } |
| 829 | |
| 830 if (!_need_verify || length <= 1) { | |
| 831 return interfaces; | |
| 832 } | |
| 833 | |
| 834 // Check if there's any duplicates in interfaces | |
| 835 ResourceMark rm(THREAD); | |
| 836 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 837 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 838 initialize_hashtable(interface_names); | |
| 839 bool dup = false; | |
| 840 { | |
| 841 debug_only(No_Safepoint_Verifier nsv;) | |
| 842 for (index = 0; index < length; index++) { | |
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843 Klass* k = interfaces->at(index); |
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844 Symbol* name = InstanceKlass::cast(k)->name(); |
| 0 | 845 // If no duplicates, add (name, NULL) in hashtable interface_names. |
| 846 if (!put_after_lookup(name, NULL, interface_names)) { | |
| 847 dup = true; | |
| 848 break; | |
| 849 } | |
| 850 } | |
| 851 } | |
| 852 if (dup) { | |
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853 classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
| 0 | 854 } |
| 855 | |
| 856 return interfaces; | |
| 857 } | |
| 858 | |
| 859 | |
| 860 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
| 861 // Make sure the constant pool entry is of a type appropriate to this field | |
| 862 guarantee_property( | |
| 863 (constantvalue_index > 0 && | |
| 864 constantvalue_index < cp->length()), | |
| 865 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
| 866 constantvalue_index, CHECK); | |
| 867 constantTag value_type = cp->tag_at(constantvalue_index); | |
| 868 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
| 869 case T_LONG: | |
| 870 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
| 871 break; | |
| 872 case T_FLOAT: | |
| 873 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
| 874 break; | |
| 875 case T_DOUBLE: | |
| 876 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
| 877 break; | |
| 878 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
| 879 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
| 880 break; | |
| 881 case T_OBJECT: | |
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882 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
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883 && value_type.is_string()), |
| 0 | 884 "Bad string initial value in class file %s", CHECK); |
| 885 break; | |
| 886 default: | |
| 887 classfile_parse_error( | |
| 888 "Unable to set initial value %u in class file %s", | |
| 889 constantvalue_index, CHECK); | |
| 890 } | |
| 891 } | |
| 892 | |
| 893 | |
| 894 // Parse attributes for a field. | |
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895 void ClassFileParser::parse_field_attributes(ClassLoaderData* loader_data, |
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896 constantPoolHandle cp, |
| 0 | 897 u2 attributes_count, |
| 898 bool is_static, u2 signature_index, | |
| 899 u2* constantvalue_index_addr, | |
| 900 bool* is_synthetic_addr, | |
| 901 u2* generic_signature_index_addr, | |
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902 AnnotationArray** field_annotations, |
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903 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
| 0 | 904 TRAPS) { |
| 905 ClassFileStream* cfs = stream(); | |
| 906 assert(attributes_count > 0, "length should be greater than 0"); | |
| 907 u2 constantvalue_index = 0; | |
| 908 u2 generic_signature_index = 0; | |
| 909 bool is_synthetic = false; | |
| 910 u1* runtime_visible_annotations = NULL; | |
| 911 int runtime_visible_annotations_length = 0; | |
| 912 u1* runtime_invisible_annotations = NULL; | |
| 913 int runtime_invisible_annotations_length = 0; | |
| 914 while (attributes_count--) { | |
| 915 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
| 916 u2 attribute_name_index = cfs->get_u2_fast(); | |
| 917 u4 attribute_length = cfs->get_u4_fast(); | |
| 918 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
| 919 cp->tag_at(attribute_name_index).is_utf8(), | |
| 920 "Invalid field attribute index %u in class file %s", | |
| 921 attribute_name_index, | |
| 922 CHECK); | |
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923 Symbol* attribute_name = cp->symbol_at(attribute_name_index); |
| 0 | 924 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
| 925 // ignore if non-static | |
| 926 if (constantvalue_index != 0) { | |
| 927 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
| 928 } | |
| 929 check_property( | |
| 930 attribute_length == 2, | |
| 931 "Invalid ConstantValue field attribute length %u in class file %s", | |
| 932 attribute_length, CHECK); | |
| 933 constantvalue_index = cfs->get_u2(CHECK); | |
| 934 if (_need_verify) { | |
| 935 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
| 936 } | |
| 937 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
| 938 if (attribute_length != 0) { | |
| 939 classfile_parse_error( | |
| 940 "Invalid Synthetic field attribute length %u in class file %s", | |
| 941 attribute_length, CHECK); | |
| 942 } | |
| 943 is_synthetic = true; | |
| 944 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
| 945 if (attribute_length != 0) { | |
| 946 classfile_parse_error( | |
| 947 "Invalid Deprecated field attribute length %u in class file %s", | |
| 948 attribute_length, CHECK); | |
| 949 } | |
| 950 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 951 if (attribute_name == vmSymbols::tag_signature()) { | |
| 952 if (attribute_length != 2) { | |
| 953 classfile_parse_error( | |
| 954 "Wrong size %u for field's Signature attribute in class file %s", | |
| 955 attribute_length, CHECK); | |
| 956 } | |
| 957 generic_signature_index = cfs->get_u2(CHECK); | |
| 958 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
| 959 runtime_visible_annotations_length = attribute_length; | |
| 960 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 961 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
| 962 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
| 963 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 964 runtime_invisible_annotations_length = attribute_length; | |
| 965 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 966 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 967 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
| 968 } else { | |
| 969 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
| 970 } | |
| 971 } else { | |
| 972 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
| 973 } | |
| 974 } | |
| 975 | |
| 976 *constantvalue_index_addr = constantvalue_index; | |
| 977 *is_synthetic_addr = is_synthetic; | |
| 978 *generic_signature_index_addr = generic_signature_index; | |
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979 *field_annotations = assemble_annotations(loader_data, |
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980 runtime_visible_annotations, |
| 0 | 981 runtime_visible_annotations_length, |
| 982 runtime_invisible_annotations, | |
| 983 runtime_invisible_annotations_length, | |
| 984 CHECK); | |
| 985 return; | |
| 986 } | |
| 987 | |
| 988 | |
| 989 // Field allocation types. Used for computing field offsets. | |
| 990 | |
| 991 enum FieldAllocationType { | |
| 992 STATIC_OOP, // Oops | |
| 993 STATIC_BYTE, // Boolean, Byte, char | |
| 994 STATIC_SHORT, // shorts | |
| 995 STATIC_WORD, // ints | |
| 3938 | 996 STATIC_DOUBLE, // aligned long or double |
| 0 | 997 NONSTATIC_OOP, |
| 998 NONSTATIC_BYTE, | |
| 999 NONSTATIC_SHORT, | |
| 1000 NONSTATIC_WORD, | |
| 1001 NONSTATIC_DOUBLE, | |
| 3938 | 1002 MAX_FIELD_ALLOCATION_TYPE, |
| 1003 BAD_ALLOCATION_TYPE = -1 | |
| 0 | 1004 }; |
| 1005 | |
| 3938 | 1006 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
| 1007 BAD_ALLOCATION_TYPE, // 0 | |
| 1008 BAD_ALLOCATION_TYPE, // 1 | |
| 1009 BAD_ALLOCATION_TYPE, // 2 | |
| 1010 BAD_ALLOCATION_TYPE, // 3 | |
| 1011 NONSTATIC_BYTE , // T_BOOLEAN = 4, | |
| 1012 NONSTATIC_SHORT, // T_CHAR = 5, | |
| 1013 NONSTATIC_WORD, // T_FLOAT = 6, | |
| 1014 NONSTATIC_DOUBLE, // T_DOUBLE = 7, | |
| 1015 NONSTATIC_BYTE, // T_BYTE = 8, | |
| 1016 NONSTATIC_SHORT, // T_SHORT = 9, | |
| 1017 NONSTATIC_WORD, // T_INT = 10, | |
| 1018 NONSTATIC_DOUBLE, // T_LONG = 11, | |
| 1019 NONSTATIC_OOP, // T_OBJECT = 12, | |
| 1020 NONSTATIC_OOP, // T_ARRAY = 13, | |
| 1021 BAD_ALLOCATION_TYPE, // T_VOID = 14, | |
| 1022 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, | |
| 1023 BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16, | |
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1024 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1025 BAD_ALLOCATION_TYPE, // T_CONFLICT = 18, |
| 3938 | 1026 BAD_ALLOCATION_TYPE, // 0 |
| 1027 BAD_ALLOCATION_TYPE, // 1 | |
| 1028 BAD_ALLOCATION_TYPE, // 2 | |
| 1029 BAD_ALLOCATION_TYPE, // 3 | |
| 1030 STATIC_BYTE , // T_BOOLEAN = 4, | |
| 1031 STATIC_SHORT, // T_CHAR = 5, | |
| 1032 STATIC_WORD, // T_FLOAT = 6, | |
| 1033 STATIC_DOUBLE, // T_DOUBLE = 7, | |
| 1034 STATIC_BYTE, // T_BYTE = 8, | |
| 1035 STATIC_SHORT, // T_SHORT = 9, | |
| 1036 STATIC_WORD, // T_INT = 10, | |
| 1037 STATIC_DOUBLE, // T_LONG = 11, | |
| 1038 STATIC_OOP, // T_OBJECT = 12, | |
| 1039 STATIC_OOP, // T_ARRAY = 13, | |
| 1040 BAD_ALLOCATION_TYPE, // T_VOID = 14, | |
| 1041 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, | |
| 1042 BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16, | |
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1043 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1044 BAD_ALLOCATION_TYPE, // T_CONFLICT = 18, |
| 0 | 1045 }; |
| 1046 | |
| 3938 | 1047 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
| 1048 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
| 1049 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
| 1050 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
| 1051 return result; | |
| 1052 } | |
| 1053 | |
| 1054 class FieldAllocationCount: public ResourceObj { | |
| 1055 public: | |
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1056 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
| 3938 | 1057 |
| 1058 FieldAllocationCount() { | |
| 1059 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
| 1060 count[i] = 0; | |
| 1061 } | |
| 1062 } | |
| 1063 | |
| 1064 FieldAllocationType update(bool is_static, BasicType type) { | |
| 1065 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1066 // Make sure there is no overflow with injected fields. |
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1067 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
| 3938 | 1068 count[atype]++; |
| 1069 return atype; | |
| 1070 } | |
| 1071 }; | |
| 1072 | |
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1073 Array<u2>* ClassFileParser::parse_fields(ClassLoaderData* loader_data, |
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1074 Symbol* class_name, |
| 3938 | 1075 constantPoolHandle cp, bool is_interface, |
| 1076 FieldAllocationCount *fac, | |
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1077 Array<AnnotationArray*>** fields_annotations, |
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1078 u2* java_fields_count_ptr, TRAPS) { |
| 0 | 1079 ClassFileStream* cfs = stream(); |
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1080 cfs->guarantee_more(2, CHECK_NULL); // length |
| 0 | 1081 u2 length = cfs->get_u2_fast(); |
| 3938 | 1082 *java_fields_count_ptr = length; |
| 1083 | |
| 1084 int num_injected = 0; | |
| 1085 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1086 int total_fields = length + num_injected; |
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1087 |
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1088 // The field array starts with tuples of shorts |
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1089 // [access, name index, sig index, initial value index, byte offset]. |
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1090 // A generic signature slot only exists for field with generic |
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1091 // signature attribute. And the access flag is set with |
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1092 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1093 // signature slots are at the end of the field array and after all |
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1094 // other fields data. |
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1095 // |
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1096 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1097 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1098 // ... |
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1099 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1100 // [generic signature index] |
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1101 // [generic signature index] |
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1102 // ... |
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1103 // |
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1104 // Allocate a temporary resource array for field data. For each field, |
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1105 // a slot is reserved in the temporary array for the generic signature |
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1106 // index. After parsing all fields, the data are copied to a permanent |
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1107 // array and any unused slots will be discarded. |
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1108 ResourceMark rm(THREAD); |
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1109 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1110 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
| 0 | 1111 |
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1112 AnnotationArray* field_annotations = NULL; |
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1113 // The generic signature slots start after all other fields' data. |
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1114 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1115 int num_generic_signature = 0; |
| 0 | 1116 for (int n = 0; n < length; n++) { |
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1117 cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
| 0 | 1118 |
| 1119 AccessFlags access_flags; | |
| 1120 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
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1121 verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
| 0 | 1122 access_flags.set_flags(flags); |
| 1123 | |
| 1124 u2 name_index = cfs->get_u2_fast(); | |
| 1125 int cp_size = cp->length(); | |
| 1126 check_property( | |
| 1127 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
| 1128 "Invalid constant pool index %u for field name in class file %s", | |
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1129 name_index, CHECK_NULL); |
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1130 Symbol* name = cp->symbol_at(name_index); |
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1131 verify_legal_field_name(name, CHECK_NULL); |
| 0 | 1132 |
| 1133 u2 signature_index = cfs->get_u2_fast(); | |
| 1134 check_property( | |
| 1135 valid_cp_range(signature_index, cp_size) && | |
| 1136 cp->tag_at(signature_index).is_utf8(), | |
| 1137 "Invalid constant pool index %u for field signature in class file %s", | |
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1138 signature_index, CHECK_NULL); |
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1139 Symbol* sig = cp->symbol_at(signature_index); |
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1140 verify_legal_field_signature(name, sig, CHECK_NULL); |
| 0 | 1141 |
| 1142 u2 constantvalue_index = 0; | |
| 1143 bool is_synthetic = false; | |
| 1144 u2 generic_signature_index = 0; | |
| 1145 bool is_static = access_flags.is_static(); | |
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1146 FieldAnnotationCollector parsed_annotations; |
| 0 | 1147 |
| 1148 u2 attributes_count = cfs->get_u2_fast(); | |
| 1149 if (attributes_count > 0) { | |
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1150 parse_field_attributes(loader_data, |
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1151 cp, attributes_count, is_static, signature_index, |
| 0 | 1152 &constantvalue_index, &is_synthetic, |
| 1153 &generic_signature_index, &field_annotations, | |
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1154 &parsed_annotations, |
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1155 CHECK_NULL); |
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1156 if (field_annotations != NULL) { |
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1157 if (*fields_annotations == NULL) { |
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1158 *fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1159 loader_data, length, NULL, |
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1160 CHECK_NULL); |
| 0 | 1161 } |
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1162 (*fields_annotations)->at_put(n, field_annotations); |
| 0 | 1163 } |
| 1164 if (is_synthetic) { | |
| 1165 access_flags.set_is_synthetic(); | |
| 1166 } | |
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1167 if (generic_signature_index != 0) { |
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1168 access_flags.set_field_has_generic_signature(); |
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1169 fa[generic_signature_slot] = generic_signature_index; |
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1170 generic_signature_slot ++; |
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1171 num_generic_signature ++; |
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1172 } |
| 0 | 1173 } |
| 1174 | |
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1175 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
| 3938 | 1176 field->initialize(access_flags.as_short(), |
| 1177 name_index, | |
| 1178 signature_index, | |
| 1179 constantvalue_index, | |
| 1180 0); | |
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1181 if (parsed_annotations.has_any_annotations()) |
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1182 parsed_annotations.apply_to(field); |
| 3938 | 1183 |
| 1184 BasicType type = cp->basic_type_for_signature_at(signature_index); | |
| 0 | 1185 |
| 1186 // Remember how many oops we encountered and compute allocation type | |
| 3938 | 1187 FieldAllocationType atype = fac->update(is_static, type); |
| 0 | 1188 |
| 1189 // The correct offset is computed later (all oop fields will be located together) | |
| 1190 // We temporarily store the allocation type in the offset field | |
| 3938 | 1191 field->set_offset(atype); |
| 1192 } | |
| 1193 | |
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1194 int index = length; |
| 3938 | 1195 if (num_injected != 0) { |
| 1196 for (int n = 0; n < num_injected; n++) { | |
| 1197 // Check for duplicates | |
| 1198 if (injected[n].may_be_java) { | |
| 1199 Symbol* name = injected[n].name(); | |
| 1200 Symbol* signature = injected[n].signature(); | |
| 1201 bool duplicate = false; | |
| 1202 for (int i = 0; i < length; i++) { | |
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1203 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
| 3938 | 1204 if (name == cp->symbol_at(f->name_index()) && |
| 1205 signature == cp->symbol_at(f->signature_index())) { | |
| 1206 // Symbol is desclared in Java so skip this one | |
| 1207 duplicate = true; | |
| 1208 break; | |
| 1209 } | |
| 1210 } | |
| 1211 if (duplicate) { | |
| 1212 // These will be removed from the field array at the end | |
| 1213 continue; | |
| 1214 } | |
| 1215 } | |
| 1216 | |
| 1217 // Injected field | |
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1218 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
| 3938 | 1219 field->initialize(JVM_ACC_FIELD_INTERNAL, |
| 1220 injected[n].name_index, | |
| 1221 injected[n].signature_index, | |
| 1222 0, | |
| 1223 0); | |
| 1224 | |
| 1225 BasicType type = FieldType::basic_type(injected[n].signature()); | |
| 1226 | |
| 1227 // Remember how many oops we encountered and compute allocation type | |
| 1228 FieldAllocationType atype = fac->update(false, type); | |
| 1229 | |
| 1230 // The correct offset is computed later (all oop fields will be located together) | |
| 1231 // We temporarily store the allocation type in the offset field | |
| 1232 field->set_offset(atype); | |
| 1233 index++; | |
| 1234 } | |
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1235 } |
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1236 |
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1237 // Now copy the fields' data from the temporary resource array. |
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1238 // Sometimes injected fields already exist in the Java source so |
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1239 // the fields array could be too long. In that case the |
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1240 // fields array is trimed. Also unused slots that were reserved |
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1241 // for generic signature indexes are discarded. |
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1242 Array<u2>* fields = MetadataFactory::new_array<u2>( |
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1243 loader_data, index * FieldInfo::field_slots + num_generic_signature, |
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1244 CHECK_NULL); |
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1245 { |
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1246 int i = 0; |
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1247 for (; i < index * FieldInfo::field_slots; i++) { |
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1248 fields->at_put(i, fa[i]); |
| 3938 | 1249 } |
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1250 for (int j = total_fields * FieldInfo::field_slots; |
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1251 j < generic_signature_slot; j++) { |
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1252 fields->at_put(i++, fa[j]); |
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1253 } |
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1254 assert(i == fields->length(), ""); |
| 0 | 1255 } |
| 1256 | |
| 1257 if (_need_verify && length > 1) { | |
| 1258 // Check duplicated fields | |
| 1259 ResourceMark rm(THREAD); | |
| 1260 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 1261 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 1262 initialize_hashtable(names_and_sigs); | |
| 1263 bool dup = false; | |
| 1264 { | |
| 1265 debug_only(No_Safepoint_Verifier nsv;) | |
| 3938 | 1266 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
| 1267 Symbol* name = fs.name(); | |
| 1268 Symbol* sig = fs.signature(); | |
| 0 | 1269 // If no duplicates, add name/signature in hashtable names_and_sigs. |
| 1270 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
| 1271 dup = true; | |
| 1272 break; | |
| 1273 } | |
| 1274 } | |
| 1275 } | |
| 1276 if (dup) { | |
| 1277 classfile_parse_error("Duplicate field name&signature in class file %s", | |
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1278 CHECK_NULL); |
| 0 | 1279 } |
| 1280 } | |
| 1281 | |
| 1282 return fields; | |
| 1283 } | |
| 1284 | |
| 1285 | |
| 1286 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
| 1287 while (length-- > 0) { | |
| 1288 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
| 1289 } | |
| 1290 } | |
| 1291 | |
| 1292 | |
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1293 u2* ClassFileParser::parse_exception_table(ClassLoaderData* loader_data, |
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1294 u4 code_length, |
|
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1295 u4 exception_table_length, |
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1296 constantPoolHandle cp, |
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1297 TRAPS) { |
| 0 | 1298 ClassFileStream* cfs = stream(); |
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1299 |
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1300 u2* exception_table_start = cfs->get_u2_buffer(); |
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1301 assert(exception_table_start != NULL, "null exception table"); |
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1302 cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
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1303 // Will check legal target after parsing code array in verifier. |
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1304 if (_need_verify) { |
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1305 for (unsigned int i = 0; i < exception_table_length; i++) { |
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1306 u2 start_pc = cfs->get_u2_fast(); |
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1307 u2 end_pc = cfs->get_u2_fast(); |
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1308 u2 handler_pc = cfs->get_u2_fast(); |
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1309 u2 catch_type_index = cfs->get_u2_fast(); |
| 0 | 1310 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
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1311 "Illegal exception table range in class file %s", |
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1312 CHECK_NULL); |
| 0 | 1313 guarantee_property(handler_pc < code_length, |
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1314 "Illegal exception table handler in class file %s", |
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1315 CHECK_NULL); |
| 0 | 1316 if (catch_type_index != 0) { |
| 1317 guarantee_property(valid_cp_range(catch_type_index, cp->length()) && | |
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1318 is_klass_reference(cp, catch_type_index), |
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1319 "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
| 0 | 1320 } |
| 1321 } | |
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1322 } else { |
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1323 cfs->skip_u2_fast(exception_table_length * 4); |
| 0 | 1324 } |
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1325 return exception_table_start; |
| 0 | 1326 } |
| 1327 | |
| 1328 void ClassFileParser::parse_linenumber_table( | |
| 1329 u4 code_attribute_length, u4 code_length, | |
| 1330 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
| 1331 ClassFileStream* cfs = stream(); | |
| 1332 unsigned int num_entries = cfs->get_u2(CHECK); | |
| 1333 | |
| 1334 // Each entry is a u2 start_pc, and a u2 line_number | |
| 1335 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
| 1336 | |
| 1337 // Verify line number attribute and table length | |
| 1338 check_property( | |
| 1339 code_attribute_length == sizeof(u2) + length_in_bytes, | |
| 1340 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
| 1341 | |
| 1342 cfs->guarantee_more(length_in_bytes, CHECK); | |
| 1343 | |
| 1344 if ((*write_stream) == NULL) { | |
| 1345 if (length_in_bytes > fixed_buffer_size) { | |
| 1346 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
| 1347 } else { | |
| 1348 (*write_stream) = new CompressedLineNumberWriteStream( | |
| 1349 linenumbertable_buffer, fixed_buffer_size); | |
| 1350 } | |
| 1351 } | |
| 1352 | |
| 1353 while (num_entries-- > 0) { | |
| 1354 u2 bci = cfs->get_u2_fast(); // start_pc | |
| 1355 u2 line = cfs->get_u2_fast(); // line_number | |
| 1356 guarantee_property(bci < code_length, | |
| 1357 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
| 1358 (*write_stream)->write_pair(bci, line); | |
| 1359 } | |
| 1360 } | |
| 1361 | |
| 1362 | |
| 1363 // Class file LocalVariableTable elements. | |
| 1364 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
| 1365 public: | |
| 1366 u2 start_bci; | |
| 1367 u2 length; | |
| 1368 u2 name_cp_index; | |
| 1369 u2 descriptor_cp_index; | |
| 1370 u2 slot; | |
| 1371 }; | |
| 1372 | |
| 1373 | |
| 6197 | 1374 class LVT_Hash: public CHeapObj<mtClass> { |
| 0 | 1375 public: |
| 1376 LocalVariableTableElement *_elem; // element | |
| 1377 LVT_Hash* _next; // Next entry in hash table | |
| 1378 }; | |
| 1379 | |
| 1380 unsigned int hash(LocalVariableTableElement *elem) { | |
| 1381 unsigned int raw_hash = elem->start_bci; | |
| 1382 | |
| 1383 raw_hash = elem->length + raw_hash * 37; | |
| 1384 raw_hash = elem->name_cp_index + raw_hash * 37; | |
| 1385 raw_hash = elem->slot + raw_hash * 37; | |
| 1386 | |
| 1387 return raw_hash % HASH_ROW_SIZE; | |
| 1388 } | |
| 1389 | |
| 1390 void initialize_hashtable(LVT_Hash** table) { | |
| 1391 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
| 1392 table[i] = NULL; | |
| 1393 } | |
| 1394 } | |
| 1395 | |
| 1396 void clear_hashtable(LVT_Hash** table) { | |
| 1397 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
| 1398 LVT_Hash* current = table[i]; | |
| 1399 LVT_Hash* next; | |
| 1400 while (current != NULL) { | |
| 1401 next = current->_next; | |
| 1402 current->_next = NULL; | |
| 1403 delete(current); | |
| 1404 current = next; | |
| 1405 } | |
| 1406 table[i] = NULL; | |
| 1407 } | |
| 1408 } | |
| 1409 | |
| 1410 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
| 1411 LVT_Hash* entry = table[index]; | |
| 1412 | |
| 1413 /* | |
| 1414 * 3-tuple start_bci/length/slot has to be unique key, | |
| 1415 * so the following comparison seems to be redundant: | |
| 1416 * && elem->name_cp_index == entry->_elem->name_cp_index | |
| 1417 */ | |
| 1418 while (entry != NULL) { | |
| 1419 if (elem->start_bci == entry->_elem->start_bci | |
| 1420 && elem->length == entry->_elem->length | |
| 1421 && elem->name_cp_index == entry->_elem->name_cp_index | |
| 1422 && elem->slot == entry->_elem->slot | |
| 1423 ) { | |
| 1424 return entry; | |
| 1425 } | |
| 1426 entry = entry->_next; | |
| 1427 } | |
| 1428 return NULL; | |
| 1429 } | |
| 1430 | |
| 1431 // Return false if the local variable is found in table. | |
| 1432 // Return true if no duplicate is found. | |
| 1433 // And local variable is added as a new entry in table. | |
| 1434 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
| 1435 // First lookup for duplicates | |
| 1436 int index = hash(elem); | |
| 1437 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
| 1438 | |
| 1439 if (entry != NULL) { | |
| 1440 return false; | |
| 1441 } | |
| 1442 // No duplicate is found, allocate a new entry and fill it. | |
| 1443 if ((entry = new LVT_Hash()) == NULL) { | |
| 1444 return false; | |
| 1445 } | |
| 1446 entry->_elem = elem; | |
| 1447 | |
| 1448 // Insert into hash table | |
| 1449 entry->_next = table[index]; | |
| 1450 table[index] = entry; | |
| 1451 | |
| 1452 return true; | |
| 1453 } | |
| 1454 | |
| 1455 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
| 1456 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
| 1457 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
| 1458 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
| 1459 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
| 1460 lvt->signature_cp_index = 0; | |
| 1461 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
| 1462 } | |
| 1463 | |
| 1464 // Function is used to parse both attributes: | |
| 1465 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
| 1466 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
| 1467 u2 max_locals, | |
| 1468 u4 code_attribute_length, | |
| 1469 constantPoolHandle cp, | |
| 1470 u2* localvariable_table_length, | |
| 1471 bool isLVTT, | |
| 1472 TRAPS) { | |
| 1473 ClassFileStream* cfs = stream(); | |
| 1474 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
| 1475 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
| 1476 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
| 1477 // Verify local variable table attribute has right length | |
| 1478 if (_need_verify) { | |
| 1479 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
| 1480 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
| 1481 } | |
| 1482 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
| 1483 assert(localvariable_table_start != NULL, "null local variable table"); | |
| 1484 if (!_need_verify) { | |
| 1485 cfs->skip_u2_fast(size); | |
| 1486 } else { | |
| 1487 cfs->guarantee_more(size * 2, CHECK_NULL); | |
| 1488 for(int i = 0; i < (*localvariable_table_length); i++) { | |
| 1489 u2 start_pc = cfs->get_u2_fast(); | |
| 1490 u2 length = cfs->get_u2_fast(); | |
| 1491 u2 name_index = cfs->get_u2_fast(); | |
| 1492 u2 descriptor_index = cfs->get_u2_fast(); | |
| 1493 u2 index = cfs->get_u2_fast(); | |
| 1494 // Assign to a u4 to avoid overflow | |
| 1495 u4 end_pc = (u4)start_pc + (u4)length; | |
| 1496 | |
| 1497 if (start_pc >= code_length) { | |
| 1498 classfile_parse_error( | |
| 1499 "Invalid start_pc %u in %s in class file %s", | |
| 1500 start_pc, tbl_name, CHECK_NULL); | |
| 1501 } | |
| 1502 if (end_pc > code_length) { | |
| 1503 classfile_parse_error( | |
| 1504 "Invalid length %u in %s in class file %s", | |
| 1505 length, tbl_name, CHECK_NULL); | |
| 1506 } | |
| 1507 int cp_size = cp->length(); | |
| 1508 guarantee_property( | |
| 1509 valid_cp_range(name_index, cp_size) && | |
| 1510 cp->tag_at(name_index).is_utf8(), | |
| 1511 "Name index %u in %s has bad constant type in class file %s", | |
| 1512 name_index, tbl_name, CHECK_NULL); | |
| 1513 guarantee_property( | |
| 1514 valid_cp_range(descriptor_index, cp_size) && | |
| 1515 cp->tag_at(descriptor_index).is_utf8(), | |
| 1516 "Signature index %u in %s has bad constant type in class file %s", | |
| 1517 descriptor_index, tbl_name, CHECK_NULL); | |
| 1518 | |
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1519 Symbol* name = cp->symbol_at(name_index); |
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1520 Symbol* sig = cp->symbol_at(descriptor_index); |
| 0 | 1521 verify_legal_field_name(name, CHECK_NULL); |
| 1522 u2 extra_slot = 0; | |
| 1523 if (!isLVTT) { | |
| 1524 verify_legal_field_signature(name, sig, CHECK_NULL); | |
| 1525 | |
| 1526 // 4894874: check special cases for double and long local variables | |
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1527 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
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1528 sig == vmSymbols::type_signature(T_LONG)) { |
| 0 | 1529 extra_slot = 1; |
| 1530 } | |
| 1531 } | |
| 1532 guarantee_property((index + extra_slot) < max_locals, | |
| 1533 "Invalid index %u in %s in class file %s", | |
| 1534 index, tbl_name, CHECK_NULL); | |
| 1535 } | |
| 1536 } | |
| 1537 return localvariable_table_start; | |
| 1538 } | |
| 1539 | |
| 1540 | |
| 1541 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
| 1542 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { | |
| 1543 ClassFileStream* cfs = stream(); | |
| 1544 u2 index = 0; // index in the array with long/double occupying two slots | |
| 1545 u4 i1 = *u1_index; | |
| 1546 u4 i2 = *u2_index + 1; | |
| 1547 for(int i = 0; i < array_length; i++) { | |
| 1548 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
| 1549 index++; | |
| 1550 if (tag == ITEM_Long || tag == ITEM_Double) { | |
| 1551 index++; | |
| 1552 } else if (tag == ITEM_Object) { | |
| 1553 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
| 1554 guarantee_property(valid_cp_range(class_index, cp->length()) && | |
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1555 is_klass_reference(cp, class_index), |
| 0 | 1556 "Bad class index %u in StackMap in class file %s", |
| 1557 class_index, CHECK); | |
| 1558 } else if (tag == ITEM_Uninitialized) { | |
| 1559 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
| 1560 guarantee_property( | |
| 1561 offset < code_length, | |
| 1562 "Bad uninitialized type offset %u in StackMap in class file %s", | |
| 1563 offset, CHECK); | |
| 1564 } else { | |
| 1565 guarantee_property( | |
| 1566 tag <= (u1)ITEM_Uninitialized, | |
| 1567 "Unknown variable type %u in StackMap in class file %s", | |
| 1568 tag, CHECK); | |
| 1569 } | |
| 1570 } | |
| 1571 u2_array[*u2_index] = index; | |
| 1572 *u1_index = i1; | |
| 1573 *u2_index = i2; | |
| 1574 } | |
| 1575 | |
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1576 Array<u1>* ClassFileParser::parse_stackmap_table( |
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1577 ClassLoaderData* loader_data, |
| 0 | 1578 u4 code_attribute_length, TRAPS) { |
| 1579 if (code_attribute_length == 0) | |
| 1580 return NULL; | |
| 1581 | |
| 1582 ClassFileStream* cfs = stream(); | |
| 1583 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
| 1584 assert(stackmap_table_start != NULL, "null stackmap table"); | |
| 1585 | |
| 1586 // check code_attribute_length first | |
| 1587 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
| 1588 | |
| 1589 if (!_need_verify && !DumpSharedSpaces) { | |
| 1590 return NULL; | |
| 1591 } | |
| 1592 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
1593 Array<u1>* stackmap_data = |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1594 MetadataFactory::new_array<u1>(loader_data, code_attribute_length, 0, CHECK_NULL); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
1595 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
1596 memcpy((void*)stackmap_data->adr_at(0), |
| 0 | 1597 (void*)stackmap_table_start, code_attribute_length); |
| 1598 return stackmap_data; | |
| 1599 } | |
| 1600 | |
| 1601 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
| 1602 u4 method_attribute_length, | |
| 1603 constantPoolHandle cp, TRAPS) { | |
| 1604 ClassFileStream* cfs = stream(); | |
| 1605 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
| 1606 *checked_exceptions_length = cfs->get_u2_fast(); | |
| 1607 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 1608 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
| 1609 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
| 1610 if (!_need_verify) { | |
| 1611 cfs->skip_u2_fast(size); | |
| 1612 } else { | |
| 1613 // Verify each value in the checked exception table | |
| 1614 u2 checked_exception; | |
| 1615 u2 len = *checked_exceptions_length; | |
| 1616 cfs->guarantee_more(2 * len, CHECK_NULL); | |
| 1617 for (int i = 0; i < len; i++) { | |
| 1618 checked_exception = cfs->get_u2_fast(); | |
| 1619 check_property( | |
| 1620 valid_cp_range(checked_exception, cp->length()) && | |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
1621 is_klass_reference(cp, checked_exception), |
| 0 | 1622 "Exception name has bad type at constant pool %u in class file %s", |
| 1623 checked_exception, CHECK_NULL); | |
| 1624 } | |
| 1625 } | |
| 1626 // check exceptions attribute length | |
| 1627 if (_need_verify) { | |
| 1628 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
| 1629 sizeof(u2) * size), | |
| 1630 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
| 1631 } | |
| 1632 return checked_exceptions_start; | |
| 1633 } | |
| 1634 | |
|
1586
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
kamg
parents:
1513
diff
changeset
|
1635 void ClassFileParser::throwIllegalSignature( |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
1636 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
|
1586
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
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1513
diff
changeset
|
1637 ResourceMark rm(THREAD); |
|
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
kamg
parents:
1513
diff
changeset
|
1638 Exceptions::fthrow(THREAD_AND_LOCATION, |
|
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
kamg
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1513
diff
changeset
|
1639 vmSymbols::java_lang_ClassFormatError(), |
|
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
kamg
parents:
1513
diff
changeset
|
1640 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
|
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
kamg
parents:
1513
diff
changeset
|
1641 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
|
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
kamg
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1513
diff
changeset
|
1642 } |
| 0 | 1643 |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1644 // Skip an annotation. Return >=limit if there is any problem. |
|
6d8f36bcef55
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diff
changeset
|
1645 int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1646 // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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diff
changeset
|
1647 // value := switch (tag:u1) { ... } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1648 index += 2; // skip atype |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1649 if ((index += 2) >= limit) return limit; // read nmem |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1650 int nmem = Bytes::get_Java_u2(buffer+index-2); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1651 while (--nmem >= 0 && index < limit) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1652 index += 2; // skip member |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1653 index = skip_annotation_value(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1654 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1655 return index; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1656 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1657 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1658 // Skip an annotation value. Return >=limit if there is any problem. |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1659 int ClassFileParser::skip_annotation_value(u1* buffer, int limit, int index) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1660 // value := switch (tag:u1) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1661 // case B, C, I, S, Z, D, F, J, c: con:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1662 // case e: e_class:u2 e_name:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1663 // case s: s_con:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1664 // case [: do(nval:u2) {value}; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1665 // case @: annotation; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1666 // case s: s_con:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1667 // } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1668 if ((index += 1) >= limit) return limit; // read tag |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1669 u1 tag = buffer[index-1]; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1670 switch (tag) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1671 case 'B': case 'C': case 'I': case 'S': case 'Z': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1672 case 'D': case 'F': case 'J': case 'c': case 's': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1673 index += 2; // skip con or s_con |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1674 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1675 case 'e': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1676 index += 4; // skip e_class, e_name |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1677 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1678 case '[': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1679 { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1680 if ((index += 2) >= limit) return limit; // read nval |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1681 int nval = Bytes::get_Java_u2(buffer+index-2); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1682 while (--nval >= 0 && index < limit) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1683 index = skip_annotation_value(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1684 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1685 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1686 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1687 case '@': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1688 index = skip_annotation(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1689 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1690 default: |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1691 assert(false, "annotation tag"); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1692 return limit; // bad tag byte |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1693 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1694 return index; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1695 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1696 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1697 // Sift through annotations, looking for those significant to the VM: |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1698 void ClassFileParser::parse_annotations(u1* buffer, int limit, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1699 constantPoolHandle cp, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1700 ClassFileParser::AnnotationCollector* coll, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1701 TRAPS) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1702 // annotations := do(nann:u2) {annotation} |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1703 int index = 0; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1704 if ((index += 2) >= limit) return; // read nann |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1705 int nann = Bytes::get_Java_u2(buffer+index-2); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1706 enum { // initial annotation layout |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1707 atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1708 count_off = 2, // u2 such as 1 (one value) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1709 member_off = 4, // utf8 such as 'value' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1710 tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1711 e_tag_val = 'e', |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1712 e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1713 e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1714 e_size = 11, // end of 'e' annotation |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1715 c_tag_val = 'c', |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1716 c_con_off = 7, // utf8 payload, such as 'I' or 'Ljava/lang/String;' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1717 c_size = 9, // end of 'c' annotation |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1718 min_size = 6 // smallest possible size (zero members) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1719 }; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1720 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1721 int index0 = index; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1722 index = skip_annotation(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1723 u1* abase = buffer + index0; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1724 int atype = Bytes::get_Java_u2(abase + atype_off); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1725 int count = Bytes::get_Java_u2(abase + count_off); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1726 Symbol* aname = check_symbol_at(cp, atype); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1727 if (aname == NULL) break; // invalid annotation name |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1728 Symbol* member = NULL; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1729 if (count >= 1) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1730 int member_index = Bytes::get_Java_u2(abase + member_off); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1731 member = check_symbol_at(cp, member_index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1732 if (member == NULL) break; // invalid member name |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1733 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1734 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1735 // Here is where parsing particular annotations will take place. |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1736 AnnotationCollector::ID id = coll->annotation_index(aname); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1737 if (id == AnnotationCollector::_unknown) continue; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1738 coll->set_annotation(id); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1739 // If there are no values, just set the bit and move on: |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1740 if (count == 0) continue; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1741 |
|
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1742 // For the record, here is how annotation payloads can be collected. |
|
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1743 // Suppose we want to capture @Retention.value. Here is how: |
|
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1744 //if (id == AnnotationCollector::_class_Retention) { |
|
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1745 // Symbol* payload = NULL; |
|
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1746 // if (count == 1 |
|
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1747 // && e_size == (index0 - index) // match size |
|
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1748 // && e_tag_val == *(abase + tag_off) |
|
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1749 // && (check_symbol_at(cp, Bytes::get_Java_u2(abase + e_type_off)) |
|
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1750 // == vmSymbols::RetentionPolicy_signature()) |
|
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1751 // && member == vmSymbols::value_name()) { |
|
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1752 // payload = check_symbol_at(cp, Bytes::get_Java_u2(abase + e_con_off)); |
|
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1753 // } |
|
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1754 // check_property(payload != NULL, |
|
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1755 // "Invalid @Retention annotation at offset %u in class file %s", |
|
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1756 // index0, CHECK); |
|
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1757 // if (payload != NULL) { |
|
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1758 // payload->increment_refcount(); |
|
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1759 // coll->_class_RetentionPolicy = payload; |
|
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1760 // } |
|
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1761 //} |
|
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1762 } |
|
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1763 } |
|
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1764 |
|
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1765 ClassFileParser::AnnotationCollector::ID ClassFileParser::AnnotationCollector::annotation_index(Symbol* name) { |
|
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1766 vmSymbols::SID sid = vmSymbols::find_sid(name); |
|
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1767 switch (sid) { |
|
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1768 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
|
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1769 if (_location != _in_method) break; // only allow for methods |
|
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1770 return _method_ForceInline; |
|
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1771 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
|
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1772 if (_location != _in_method) break; // only allow for methods |
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1773 return _method_DontInline; |
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1774 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
|
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1775 if (_location != _in_method) break; // only allow for methods |
|
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1776 return _method_LambdaForm_Compiled; |
|
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1777 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
|
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1778 if (_location != _in_method) break; // only allow for methods |
|
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1779 return _method_LambdaForm_Hidden; |
|
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1780 default: break; |
|
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1781 } |
|
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1782 return AnnotationCollector::_unknown; |
|
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|
1783 } |
|
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1784 |
|
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1785 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
|
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1786 fatal("no field annotations yet"); |
|
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1787 } |
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1788 |
|
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1789 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
|
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1790 if (has_annotation(_method_ForceInline)) |
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1791 m->set_force_inline(true); |
|
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1792 if (has_annotation(_method_DontInline)) |
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1793 m->set_dont_inline(true); |
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1794 if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
|
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1795 m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
|
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1796 if (has_annotation(_method_LambdaForm_Hidden)) |
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1797 m->set_hidden(true); |
|
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1798 } |
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1799 |
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1800 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
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1801 fatal("no class annotations yet"); |
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1802 } |
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1803 |
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1804 |
| 0 | 1805 #define MAX_ARGS_SIZE 255 |
| 1806 #define MAX_CODE_SIZE 65535 | |
| 1807 #define INITIAL_MAX_LVT_NUMBER 256 | |
| 1808 | |
| 1809 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
|
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1810 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
|
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1811 // Method* to save footprint, so we only know the size of the resulting Method* when the |
| 0 | 1812 // entire method attribute is parsed. |
| 1813 // | |
| 1814 // The promoted_flags parameter is used to pass relevant access_flags | |
| 1815 // from the method back up to the containing klass. These flag values | |
| 1816 // are added to klass's access_flags. | |
| 1817 | |
|
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1818 methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data, |
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1819 constantPoolHandle cp, |
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1820 bool is_interface, |
| 0 | 1821 AccessFlags *promoted_flags, |
|
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1822 AnnotationArray** method_annotations, |
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1823 AnnotationArray** method_parameter_annotations, |
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1824 AnnotationArray** method_default_annotations, |
| 0 | 1825 TRAPS) { |
| 1826 ClassFileStream* cfs = stream(); | |
| 1827 methodHandle nullHandle; | |
| 1828 ResourceMark rm(THREAD); | |
| 1829 // Parse fixed parts | |
| 1830 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
| 1831 | |
| 1832 int flags = cfs->get_u2_fast(); | |
| 1833 u2 name_index = cfs->get_u2_fast(); | |
| 1834 int cp_size = cp->length(); | |
| 1835 check_property( | |
| 1836 valid_cp_range(name_index, cp_size) && | |
| 1837 cp->tag_at(name_index).is_utf8(), | |
| 1838 "Illegal constant pool index %u for method name in class file %s", | |
| 1839 name_index, CHECK_(nullHandle)); | |
|
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1840 Symbol* name = cp->symbol_at(name_index); |
| 0 | 1841 verify_legal_method_name(name, CHECK_(nullHandle)); |
| 1842 | |
| 1843 u2 signature_index = cfs->get_u2_fast(); | |
| 1844 guarantee_property( | |
| 1845 valid_cp_range(signature_index, cp_size) && | |
| 1846 cp->tag_at(signature_index).is_utf8(), | |
| 1847 "Illegal constant pool index %u for method signature in class file %s", | |
| 1848 signature_index, CHECK_(nullHandle)); | |
|
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1849 Symbol* signature = cp->symbol_at(signature_index); |
| 0 | 1850 |
| 1851 AccessFlags access_flags; | |
| 1852 if (name == vmSymbols::class_initializer_name()) { | |
|
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1853 // We ignore the other access flags for a valid class initializer. |
|
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1854 // (JVM Spec 2nd ed., chapter 4.6) |
|
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1855 if (_major_version < 51) { // backward compatibility |
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1856 flags = JVM_ACC_STATIC; |
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1857 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
|
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1858 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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1859 } |
| 0 | 1860 } else { |
| 1861 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
| 1862 } | |
| 1863 | |
| 1864 int args_size = -1; // only used when _need_verify is true | |
| 1865 if (_need_verify) { | |
| 1866 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
| 1867 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
| 1868 if (args_size > MAX_ARGS_SIZE) { | |
| 1869 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
| 1870 } | |
| 1871 } | |
| 1872 | |
| 1873 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
| 1874 | |
| 1875 // Default values for code and exceptions attribute elements | |
| 1876 u2 max_stack = 0; | |
| 1877 u2 max_locals = 0; | |
| 1878 u4 code_length = 0; | |
| 1879 u1* code_start = 0; | |
| 1880 u2 exception_table_length = 0; | |
|
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1881 u2* exception_table_start = NULL; |
|
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1882 Array<int>* exception_handlers = Universe::the_empty_int_array(); |
| 0 | 1883 u2 checked_exceptions_length = 0; |
| 1884 u2* checked_exceptions_start = NULL; | |
| 1885 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
| 1886 int linenumber_table_length = 0; | |
| 1887 int total_lvt_length = 0; | |
| 1888 u2 lvt_cnt = 0; | |
| 1889 u2 lvtt_cnt = 0; | |
| 1890 bool lvt_allocated = false; | |
| 1891 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
| 1892 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
| 1893 u2* localvariable_table_length; | |
| 1894 u2** localvariable_table_start; | |
| 1895 u2* localvariable_type_table_length; | |
| 1896 u2** localvariable_type_table_start; | |
| 1897 bool parsed_code_attribute = false; | |
| 1898 bool parsed_checked_exceptions_attribute = false; | |
| 1899 bool parsed_stackmap_attribute = false; | |
| 1900 // stackmap attribute - JDK1.5 | |
|
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1901 Array<u1>* stackmap_data = NULL; |
| 0 | 1902 u2 generic_signature_index = 0; |
|
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1903 MethodAnnotationCollector parsed_annotations; |
| 0 | 1904 u1* runtime_visible_annotations = NULL; |
| 1905 int runtime_visible_annotations_length = 0; | |
| 1906 u1* runtime_invisible_annotations = NULL; | |
| 1907 int runtime_invisible_annotations_length = 0; | |
| 1908 u1* runtime_visible_parameter_annotations = NULL; | |
| 1909 int runtime_visible_parameter_annotations_length = 0; | |
| 1910 u1* runtime_invisible_parameter_annotations = NULL; | |
| 1911 int runtime_invisible_parameter_annotations_length = 0; | |
| 1912 u1* annotation_default = NULL; | |
| 1913 int annotation_default_length = 0; | |
| 1914 | |
| 1915 // Parse code and exceptions attribute | |
| 1916 u2 method_attributes_count = cfs->get_u2_fast(); | |
| 1917 while (method_attributes_count--) { | |
| 1918 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
| 1919 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
| 1920 u4 method_attribute_length = cfs->get_u4_fast(); | |
| 1921 check_property( | |
| 1922 valid_cp_range(method_attribute_name_index, cp_size) && | |
| 1923 cp->tag_at(method_attribute_name_index).is_utf8(), | |
| 1924 "Invalid method attribute name index %u in class file %s", | |
| 1925 method_attribute_name_index, CHECK_(nullHandle)); | |
| 1926 | |
|
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1927 Symbol* method_attribute_name = cp->symbol_at(method_attribute_name_index); |
| 0 | 1928 if (method_attribute_name == vmSymbols::tag_code()) { |
| 1929 // Parse Code attribute | |
| 1930 if (_need_verify) { | |
| 1931 guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(), | |
| 1932 "Code attribute in native or abstract methods in class file %s", | |
| 1933 CHECK_(nullHandle)); | |
| 1934 } | |
| 1935 if (parsed_code_attribute) { | |
| 1936 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
| 1937 } | |
| 1938 parsed_code_attribute = true; | |
| 1939 | |
| 1940 // Stack size, locals size, and code size | |
| 1941 if (_major_version == 45 && _minor_version <= 2) { | |
| 1942 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
| 1943 max_stack = cfs->get_u1_fast(); | |
| 1944 max_locals = cfs->get_u1_fast(); | |
| 1945 code_length = cfs->get_u2_fast(); | |
| 1946 } else { | |
| 1947 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
| 1948 max_stack = cfs->get_u2_fast(); | |
| 1949 max_locals = cfs->get_u2_fast(); | |
| 1950 code_length = cfs->get_u4_fast(); | |
| 1951 } | |
| 1952 if (_need_verify) { | |
| 1953 guarantee_property(args_size <= max_locals, | |
| 1954 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
| 1955 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
| 1956 "Invalid method Code length %u in class file %s", | |
| 1957 code_length, CHECK_(nullHandle)); | |
| 1958 } | |
| 1959 // Code pointer | |
| 1960 code_start = cfs->get_u1_buffer(); | |
| 1961 assert(code_start != NULL, "null code start"); | |
| 1962 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
| 1963 cfs->skip_u1_fast(code_length); | |
| 1964 | |
| 1965 // Exception handler table | |
| 1966 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
| 1967 exception_table_length = cfs->get_u2_fast(); | |
| 1968 if (exception_table_length > 0) { | |
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1969 exception_table_start = |
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1970 parse_exception_table(loader_data, code_length, exception_table_length, cp, CHECK_(nullHandle)); |
| 0 | 1971 } |
| 1972 | |
| 1973 // Parse additional attributes in code attribute | |
| 1974 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
| 1975 u2 code_attributes_count = cfs->get_u2_fast(); | |
|
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1976 |
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1977 unsigned int calculated_attribute_length = 0; |
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1978 |
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1979 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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1980 calculated_attribute_length = |
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1981 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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1982 } else { |
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1983 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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1984 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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1985 } |
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1986 calculated_attribute_length += |
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1987 code_length + |
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1988 sizeof(exception_table_length) + |
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1989 sizeof(code_attributes_count) + |
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1990 exception_table_length * |
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1991 ( sizeof(u2) + // start_pc |
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1992 sizeof(u2) + // end_pc |
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1993 sizeof(u2) + // handler_pc |
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1994 sizeof(u2) ); // catch_type_index |
| 0 | 1995 |
| 1996 while (code_attributes_count--) { | |
| 1997 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
| 1998 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
| 1999 u4 code_attribute_length = cfs->get_u4_fast(); | |
| 2000 calculated_attribute_length += code_attribute_length + | |
| 2001 sizeof(code_attribute_name_index) + | |
| 2002 sizeof(code_attribute_length); | |
| 2003 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
| 2004 cp->tag_at(code_attribute_name_index).is_utf8(), | |
| 2005 "Invalid code attribute name index %u in class file %s", | |
| 2006 code_attribute_name_index, | |
| 2007 CHECK_(nullHandle)); | |
| 2008 if (LoadLineNumberTables && | |
| 2009 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
| 2010 // Parse and compress line number table | |
| 2011 parse_linenumber_table(code_attribute_length, code_length, | |
| 2012 &linenumber_table, CHECK_(nullHandle)); | |
| 2013 | |
| 2014 } else if (LoadLocalVariableTables && | |
| 2015 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
| 2016 // Parse local variable table | |
| 2017 if (!lvt_allocated) { | |
| 2018 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2019 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2020 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2021 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2022 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2023 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2024 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2025 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2026 lvt_allocated = true; | |
| 2027 } | |
| 2028 if (lvt_cnt == max_lvt_cnt) { | |
| 2029 max_lvt_cnt <<= 1; | |
| 2030 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
| 2031 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
| 2032 } | |
| 2033 localvariable_table_start[lvt_cnt] = | |
| 2034 parse_localvariable_table(code_length, | |
| 2035 max_locals, | |
| 2036 code_attribute_length, | |
| 2037 cp, | |
| 2038 &localvariable_table_length[lvt_cnt], | |
| 2039 false, // is not LVTT | |
| 2040 CHECK_(nullHandle)); | |
| 2041 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
| 2042 lvt_cnt++; | |
| 2043 } else if (LoadLocalVariableTypeTables && | |
| 2044 _major_version >= JAVA_1_5_VERSION && | |
| 2045 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
| 2046 if (!lvt_allocated) { | |
| 2047 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2048 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2049 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2050 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2051 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2052 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2053 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2054 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2055 lvt_allocated = true; | |
| 2056 } | |
| 2057 // Parse local variable type table | |
| 2058 if (lvtt_cnt == max_lvtt_cnt) { | |
| 2059 max_lvtt_cnt <<= 1; | |
| 2060 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
| 2061 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
| 2062 } | |
| 2063 localvariable_type_table_start[lvtt_cnt] = | |
| 2064 parse_localvariable_table(code_length, | |
| 2065 max_locals, | |
| 2066 code_attribute_length, | |
| 2067 cp, | |
| 2068 &localvariable_type_table_length[lvtt_cnt], | |
| 2069 true, // is LVTT | |
| 2070 CHECK_(nullHandle)); | |
| 2071 lvtt_cnt++; | |
| 2072 } else if (UseSplitVerifier && | |
| 2073 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
| 2074 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
| 2075 // Stack map is only needed by the new verifier in JDK1.5. | |
| 2076 if (parsed_stackmap_attribute) { | |
| 2077 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
| 2078 } | |
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2079 stackmap_data = parse_stackmap_table(loader_data, code_attribute_length, CHECK_(nullHandle)); |
| 0 | 2080 parsed_stackmap_attribute = true; |
| 2081 } else { | |
| 2082 // Skip unknown attributes | |
| 2083 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
| 2084 } | |
| 2085 } | |
| 2086 // check method attribute length | |
| 2087 if (_need_verify) { | |
| 2088 guarantee_property(method_attribute_length == calculated_attribute_length, | |
| 2089 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
| 2090 } | |
| 2091 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
| 2092 // Parse Exceptions attribute | |
| 2093 if (parsed_checked_exceptions_attribute) { | |
| 2094 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
| 2095 } | |
| 2096 parsed_checked_exceptions_attribute = true; | |
| 2097 checked_exceptions_start = | |
| 2098 parse_checked_exceptions(&checked_exceptions_length, | |
| 2099 method_attribute_length, | |
| 2100 cp, CHECK_(nullHandle)); | |
| 2101 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { | |
| 2102 if (method_attribute_length != 0) { | |
| 2103 classfile_parse_error( | |
| 2104 "Invalid Synthetic method attribute length %u in class file %s", | |
| 2105 method_attribute_length, CHECK_(nullHandle)); | |
| 2106 } | |
| 2107 // Should we check that there hasn't already been a synthetic attribute? | |
| 2108 access_flags.set_is_synthetic(); | |
| 2109 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
| 2110 if (method_attribute_length != 0) { | |
| 2111 classfile_parse_error( | |
| 2112 "Invalid Deprecated method attribute length %u in class file %s", | |
| 2113 method_attribute_length, CHECK_(nullHandle)); | |
| 2114 } | |
| 2115 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 2116 if (method_attribute_name == vmSymbols::tag_signature()) { | |
| 2117 if (method_attribute_length != 2) { | |
| 2118 classfile_parse_error( | |
| 2119 "Invalid Signature attribute length %u in class file %s", | |
| 2120 method_attribute_length, CHECK_(nullHandle)); | |
| 2121 } | |
| 2122 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
| 2123 generic_signature_index = cfs->get_u2_fast(); | |
| 2124 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
| 2125 runtime_visible_annotations_length = method_attribute_length; | |
| 2126 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 2127 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
|
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2128 parse_annotations(runtime_visible_annotations, runtime_visible_annotations_length, cp, &parsed_annotations, CHECK_(nullHandle)); |
| 0 | 2129 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
| 2130 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 2131 runtime_invisible_annotations_length = method_attribute_length; | |
| 2132 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 2133 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 2134 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
| 2135 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
| 2136 runtime_visible_parameter_annotations_length = method_attribute_length; | |
| 2137 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
| 2138 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
| 2139 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
| 2140 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
| 2141 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
| 2142 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
| 2143 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
| 2144 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
| 2145 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
| 2146 annotation_default_length = method_attribute_length; | |
| 2147 annotation_default = cfs->get_u1_buffer(); | |
| 2148 assert(annotation_default != NULL, "null annotation default"); | |
| 2149 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
| 2150 } else { | |
| 2151 // Skip unknown attributes | |
| 2152 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
| 2153 } | |
| 2154 } else { | |
| 2155 // Skip unknown attributes | |
| 2156 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
| 2157 } | |
| 2158 } | |
| 2159 | |
| 2160 if (linenumber_table != NULL) { | |
| 2161 linenumber_table->write_terminator(); | |
| 2162 linenumber_table_length = linenumber_table->position(); | |
| 2163 } | |
| 2164 | |
| 2165 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
| 2166 if (_need_verify) { | |
| 2167 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
| 2168 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
| 2169 } | |
| 2170 | |
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2171 // All sizing information for a Method* is finally available, now create it |
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2172 Method* m = Method::allocate(loader_data, |
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2173 code_length, |
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2174 access_flags, |
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2175 linenumber_table_length, |
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2176 total_lvt_length, |
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2177 exception_table_length, |
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2178 checked_exceptions_length, |
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2179 CHECK_(nullHandle)); |
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2180 |
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2181 ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
| 0 | 2182 |
| 2183 // Fill in information from fixed part (access_flags already set) | |
| 2184 m->set_constants(cp()); | |
| 2185 m->set_name_index(name_index); | |
| 2186 m->set_signature_index(signature_index); | |
| 2187 m->set_generic_signature_index(generic_signature_index); | |
| 2188 #ifdef CC_INTERP | |
| 2189 // hmm is there a gc issue here?? | |
| 2190 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
| 2191 m->set_result_index(rtf.type()); | |
| 2192 #endif | |
| 2193 | |
| 2194 if (args_size >= 0) { | |
| 2195 m->set_size_of_parameters(args_size); | |
| 2196 } else { | |
| 2197 m->compute_size_of_parameters(THREAD); | |
| 2198 } | |
| 2199 #ifdef ASSERT | |
| 2200 if (args_size >= 0) { | |
| 2201 m->compute_size_of_parameters(THREAD); | |
| 2202 assert(args_size == m->size_of_parameters(), ""); | |
| 2203 } | |
| 2204 #endif | |
| 2205 | |
| 2206 // Fill in code attribute information | |
| 2207 m->set_max_stack(max_stack); | |
| 2208 m->set_max_locals(max_locals); | |
| 2209 | |
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2210 m->constMethod()->set_stackmap_data(stackmap_data); |
| 0 | 2211 |
| 2212 // Copy byte codes | |
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2213 m->set_code(code_start); |
| 0 | 2214 |
| 2215 // Copy line number table | |
| 2216 if (linenumber_table != NULL) { | |
| 2217 memcpy(m->compressed_linenumber_table(), | |
| 2218 linenumber_table->buffer(), linenumber_table_length); | |
| 2219 } | |
| 2220 | |
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2221 // Copy exception table |
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2222 if (exception_table_length > 0) { |
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2223 int size = |
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2224 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
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2225 copy_u2_with_conversion((u2*) m->exception_table_start(), |
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2226 exception_table_start, size); |
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2227 } |
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2228 |
| 0 | 2229 // Copy checked exceptions |
| 2230 if (checked_exceptions_length > 0) { | |
| 2231 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 2232 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
| 2233 } | |
| 2234 | |
| 2235 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
| 2236 * | |
| 2237 * Rules for LVT's and LVTT's are: | |
| 2238 * - There can be any number of LVT's and LVTT's. | |
| 2239 * - If there are n LVT's, it is the same as if there was just | |
| 2240 * one LVT containing all the entries from the n LVT's. | |
| 2241 * - There may be no more than one LVT entry per local variable. | |
| 2242 * Two LVT entries are 'equal' if these fields are the same: | |
| 2243 * start_pc, length, name, slot | |
| 2244 * - There may be no more than one LVTT entry per each LVT entry. | |
| 2245 * Each LVTT entry has to match some LVT entry. | |
| 2246 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
| 2247 */ | |
| 2248 if (total_lvt_length > 0) { | |
| 2249 int tbl_no, idx; | |
| 2250 | |
| 2251 promoted_flags->set_has_localvariable_table(); | |
| 2252 | |
| 2253 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
| 2254 initialize_hashtable(lvt_Hash); | |
| 2255 | |
| 2256 // To fill LocalVariableTable in | |
| 2257 Classfile_LVT_Element* cf_lvt; | |
| 2258 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
| 2259 | |
| 2260 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
| 2261 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
| 2262 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
| 2263 copy_lvt_element(&cf_lvt[idx], lvt); | |
| 2264 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
| 2265 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
| 2266 && _need_verify | |
| 2267 && _major_version >= JAVA_1_5_VERSION ) { | |
| 2268 clear_hashtable(lvt_Hash); | |
| 2269 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
| 2270 "entry for '%s' in class file %s", | |
| 2271 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
| 2272 CHECK_(nullHandle)); | |
| 2273 } | |
| 2274 } | |
| 2275 } | |
| 2276 | |
| 2277 // To merge LocalVariableTable and LocalVariableTypeTable | |
| 2278 Classfile_LVT_Element* cf_lvtt; | |
| 2279 LocalVariableTableElement lvtt_elem; | |
| 2280 | |
| 2281 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
| 2282 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
| 2283 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
| 2284 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
| 2285 int index = hash(&lvtt_elem); | |
| 2286 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
| 2287 if (entry == NULL) { | |
| 2288 if (_need_verify) { | |
| 2289 clear_hashtable(lvt_Hash); | |
| 2290 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
| 2291 "does not match any LVT entry", | |
| 2292 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
| 2293 CHECK_(nullHandle)); | |
| 2294 } | |
| 2295 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
| 2296 clear_hashtable(lvt_Hash); | |
| 2297 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
| 2298 "entry for '%s' in class file %s", | |
| 2299 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
| 2300 CHECK_(nullHandle)); | |
| 2301 } else { | |
| 2302 // to add generic signatures into LocalVariableTable | |
| 2303 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
| 2304 } | |
| 2305 } | |
| 2306 } | |
| 2307 clear_hashtable(lvt_Hash); | |
| 2308 } | |
| 2309 | |
|
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2310 if (parsed_annotations.has_any_annotations()) |
|
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2311 parsed_annotations.apply_to(m); |
|
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2312 *method_annotations = assemble_annotations(loader_data, |
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2313 runtime_visible_annotations, |
| 0 | 2314 runtime_visible_annotations_length, |
| 2315 runtime_invisible_annotations, | |
| 2316 runtime_invisible_annotations_length, | |
| 2317 CHECK_(nullHandle)); | |
|
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2318 *method_parameter_annotations = assemble_annotations(loader_data, |
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2319 runtime_visible_parameter_annotations, |
| 0 | 2320 runtime_visible_parameter_annotations_length, |
| 2321 runtime_invisible_parameter_annotations, | |
| 2322 runtime_invisible_parameter_annotations_length, | |
| 2323 CHECK_(nullHandle)); | |
|
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2324 *method_default_annotations = assemble_annotations(loader_data, |
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2325 annotation_default, |
| 0 | 2326 annotation_default_length, |
| 2327 NULL, | |
| 2328 0, | |
| 2329 CHECK_(nullHandle)); | |
| 2330 | |
|
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2331 if (name == vmSymbols::finalize_method_name() && |
|
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|
2332 signature == vmSymbols::void_method_signature()) { |
| 0 | 2333 if (m->is_empty_method()) { |
| 2334 _has_empty_finalizer = true; | |
| 2335 } else { | |
| 2336 _has_finalizer = true; | |
| 2337 } | |
| 2338 } | |
|
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2339 if (name == vmSymbols::object_initializer_name() && |
|
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|
2340 signature == vmSymbols::void_method_signature() && |
| 0 | 2341 m->is_vanilla_constructor()) { |
| 2342 _has_vanilla_constructor = true; | |
| 2343 } | |
| 2344 | |
| 2345 return m; | |
| 2346 } | |
| 2347 | |
| 2348 | |
| 2349 // The promoted_flags parameter is used to pass relevant access_flags | |
| 2350 // from the methods back up to the containing klass. These flag values | |
| 2351 // are added to klass's access_flags. | |
| 2352 | |
|
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2353 Array<Method*>* ClassFileParser::parse_methods(ClassLoaderData* loader_data, |
|
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2354 constantPoolHandle cp, |
|
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2355 bool is_interface, |
| 0 | 2356 AccessFlags* promoted_flags, |
| 2357 bool* has_final_method, | |
|
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2358 Array<AnnotationArray*>** methods_annotations, |
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2359 Array<AnnotationArray*>** methods_parameter_annotations, |
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2360 Array<AnnotationArray*>** methods_default_annotations, |
| 0 | 2361 TRAPS) { |
| 2362 ClassFileStream* cfs = stream(); | |
|
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2363 AnnotationArray* method_annotations = NULL; |
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2364 AnnotationArray* method_parameter_annotations = NULL; |
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2365 AnnotationArray* method_default_annotations = NULL; |
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2366 cfs->guarantee_more(2, CHECK_NULL); // length |
| 0 | 2367 u2 length = cfs->get_u2_fast(); |
| 2368 if (length == 0) { | |
|
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2369 return Universe::the_empty_method_array(); |
| 0 | 2370 } else { |
|
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2371 // FIXME: Handle leaks at later failures. |
|
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2372 Array<Method*>* methods = MetadataFactory::new_array<Method*>(loader_data, length, NULL, CHECK_NULL); |
|
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2373 |
| 0 | 2374 HandleMark hm(THREAD); |
| 2375 for (int index = 0; index < length; index++) { | |
|
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2376 methodHandle method = parse_method(loader_data, |
|
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|
2377 cp, is_interface, |
| 0 | 2378 promoted_flags, |
| 2379 &method_annotations, | |
| 2380 &method_parameter_annotations, | |
| 2381 &method_default_annotations, | |
|
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2382 CHECK_NULL); |
|
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|
2383 |
| 0 | 2384 if (method->is_final()) { |
| 2385 *has_final_method = true; | |
| 2386 } | |
|
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2387 methods->at_put(index, method()); |
|
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2388 if (*methods_annotations == NULL) { |
|
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2389 *methods_annotations = |
|
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2390 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 2391 } |
|
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2392 (*methods_annotations)->at_put(index, method_annotations); |
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2393 if (*methods_parameter_annotations == NULL) { |
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2394 *methods_parameter_annotations = |
|
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2395 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 2396 } |
|
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2397 (*methods_parameter_annotations)->at_put(index, method_parameter_annotations); |
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2398 if (*methods_default_annotations == NULL) { |
|
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|
2399 *methods_default_annotations = |
|
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2400 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
| 0 | 2401 } |
|
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|
2402 (*methods_default_annotations)->at_put(index, method_default_annotations); |
| 0 | 2403 } |
| 2404 if (_need_verify && length > 1) { | |
| 2405 // Check duplicated methods | |
| 2406 ResourceMark rm(THREAD); | |
| 2407 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2408 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 2409 initialize_hashtable(names_and_sigs); | |
| 2410 bool dup = false; | |
| 2411 { | |
| 2412 debug_only(No_Safepoint_Verifier nsv;) | |
| 2413 for (int i = 0; i < length; i++) { | |
|
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|
2414 Method* m = methods->at(i); |
| 0 | 2415 // If no duplicates, add name/signature in hashtable names_and_sigs. |
| 2416 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
| 2417 dup = true; | |
| 2418 break; | |
| 2419 } | |
| 2420 } | |
| 2421 } | |
| 2422 if (dup) { | |
| 2423 classfile_parse_error("Duplicate method name&signature in class file %s", | |
|
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|
2424 CHECK_NULL); |
| 0 | 2425 } |
| 2426 } | |
| 2427 return methods; | |
| 2428 } | |
| 2429 } | |
| 2430 | |
| 2431 | |
|
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2432 Array<int>* ClassFileParser::sort_methods(ClassLoaderData* loader_data, |
|
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2433 Array<Method*>* methods, |
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2434 Array<AnnotationArray*>* methods_annotations, |
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2435 Array<AnnotationArray*>* methods_parameter_annotations, |
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|
2436 Array<AnnotationArray*>* methods_default_annotations, |
| 0 | 2437 TRAPS) { |
|
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2438 int length = methods->length(); |
|
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|
2439 // If JVMTI original method ordering or sharing is enabled we have to |
| 0 | 2440 // remember the original class file ordering. |
|
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2441 // We temporarily use the vtable_index field in the Method* to store the |
| 0 | 2442 // class file index, so we can read in after calling qsort. |
|
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|
2443 // Put the method ordering in the shared archive. |
|
8ce625481709
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|
2444 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
| 0 | 2445 for (int index = 0; index < length; index++) { |
|
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|
2446 Method* m = methods->at(index); |
| 0 | 2447 assert(!m->valid_vtable_index(), "vtable index should not be set"); |
| 2448 m->set_vtable_index(index); | |
| 2449 } | |
| 2450 } | |
| 2451 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
|
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2452 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
|
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2453 Method::sort_methods(methods, |
|
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|
2454 methods_annotations, |
|
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|
2455 methods_parameter_annotations, |
|
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|
2456 methods_default_annotations); |
| 0 | 2457 |
|
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|
2458 // If JVMTI original method ordering or sharing is enabled construct int |
|
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|
2459 // array remembering the original ordering |
|
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|
2460 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
|
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|
2461 Array<int>* method_ordering = MetadataFactory::new_array<int>(loader_data, length, CHECK_NULL); |
| 0 | 2462 for (int index = 0; index < length; index++) { |
|
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|
2463 Method* m = methods->at(index); |
| 0 | 2464 int old_index = m->vtable_index(); |
| 2465 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
|
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|
2466 method_ordering->at_put(index, old_index); |
|
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|
2467 m->set_vtable_index(Method::invalid_vtable_index); |
| 0 | 2468 } |
| 2469 return method_ordering; | |
| 2470 } else { | |
|
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|
2471 return Universe::the_empty_int_array(); |
| 0 | 2472 } |
| 2473 } | |
| 2474 | |
| 2475 | |
|
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|
2476 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS) { |
| 0 | 2477 ClassFileStream* cfs = stream(); |
| 2478 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
| 2479 u2 sourcefile_index = cfs->get_u2_fast(); | |
| 2480 check_property( | |
| 2481 valid_cp_range(sourcefile_index, cp->length()) && | |
| 2482 cp->tag_at(sourcefile_index).is_utf8(), | |
| 2483 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
| 2484 sourcefile_index, CHECK); | |
|
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|
2485 set_class_sourcefile(cp->symbol_at(sourcefile_index)); |
| 0 | 2486 } |
| 2487 | |
| 2488 | |
| 2489 | |
| 2490 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
| 2491 int length, TRAPS) { | |
| 2492 ClassFileStream* cfs = stream(); | |
| 2493 u1* sde_buffer = cfs->get_u1_buffer(); | |
| 2494 assert(sde_buffer != NULL, "null sde buffer"); | |
| 2495 | |
| 2496 // Don't bother storing it if there is no way to retrieve it | |
| 2497 if (JvmtiExport::can_get_source_debug_extension()) { | |
| 6226 | 2498 assert((length+1) > length, "Overflow checking"); |
| 2499 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
| 2500 for (int i = 0; i < length; i++) { | |
| 2501 sde[i] = sde_buffer[i]; | |
| 2502 } | |
| 2503 sde[length] = '\0'; | |
| 2504 set_class_sde_buffer((char*)sde, length); | |
| 0 | 2505 } |
| 2506 // Got utf8 string, set stream position forward | |
| 2507 cfs->skip_u1(length, CHECK); | |
| 2508 } | |
| 2509 | |
| 2510 | |
| 2511 // Inner classes can be static, private or protected (classic VM does this) | |
| 2512 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
| 2513 | |
| 2514 // Return number of classes in the inner classes attribute table | |
|
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2515 u2 ClassFileParser::parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
|
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|
2516 u1* inner_classes_attribute_start, |
|
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|
2517 bool parsed_enclosingmethod_attribute, |
|
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|
2518 u2 enclosing_method_class_index, |
|
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|
2519 u2 enclosing_method_method_index, |
|
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|
2520 constantPoolHandle cp, |
|
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|
2521 TRAPS) { |
| 0 | 2522 ClassFileStream* cfs = stream(); |
|
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|
2523 u1* current_mark = cfs->current(); |
|
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|
2524 u2 length = 0; |
|
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|
2525 if (inner_classes_attribute_start != NULL) { |
|
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|
2526 cfs->set_current(inner_classes_attribute_start); |
|
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|
2527 cfs->guarantee_more(2, CHECK_0); // length |
|
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|
2528 length = cfs->get_u2_fast(); |
|
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|
2529 } |
|
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|
2530 |
|
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diff
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|
2531 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
|
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|
2532 // method data: |
|
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|
2533 // [inner_class_info_index, |
|
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|
2534 // outer_class_info_index, |
|
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|
2535 // inner_name_index, |
|
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|
2536 // inner_class_access_flags, |
|
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|
2537 // ... |
|
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|
2538 // enclosing_method_class_index, |
|
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|
2539 // enclosing_method_method_index] |
|
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|
2540 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
|
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|
2541 // FIXME: Will leak on exceptions. |
|
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|
2542 Array<u2>* inner_classes = MetadataFactory::new_array<u2>(loader_data, size, CHECK_0); |
| 0 | 2543 int index = 0; |
| 2544 int cp_size = cp->length(); | |
| 2545 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
| 2546 for (int n = 0; n < length; n++) { | |
| 2547 // Inner class index | |
| 2548 u2 inner_class_info_index = cfs->get_u2_fast(); | |
| 2549 check_property( | |
| 2550 inner_class_info_index == 0 || | |
| 2551 (valid_cp_range(inner_class_info_index, cp_size) && | |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
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diff
changeset
|
2552 is_klass_reference(cp, inner_class_info_index)), |
| 0 | 2553 "inner_class_info_index %u has bad constant type in class file %s", |
| 2554 inner_class_info_index, CHECK_0); | |
| 2555 // Outer class index | |
| 2556 u2 outer_class_info_index = cfs->get_u2_fast(); | |
| 2557 check_property( | |
| 2558 outer_class_info_index == 0 || | |
| 2559 (valid_cp_range(outer_class_info_index, cp_size) && | |
|
431
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|
2560 is_klass_reference(cp, outer_class_info_index)), |
| 0 | 2561 "outer_class_info_index %u has bad constant type in class file %s", |
| 2562 outer_class_info_index, CHECK_0); | |
| 2563 // Inner class name | |
| 2564 u2 inner_name_index = cfs->get_u2_fast(); | |
| 2565 check_property( | |
| 2566 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
| 2567 cp->tag_at(inner_name_index).is_utf8()), | |
| 2568 "inner_name_index %u has bad constant type in class file %s", | |
| 2569 inner_name_index, CHECK_0); | |
| 2570 if (_need_verify) { | |
| 2571 guarantee_property(inner_class_info_index != outer_class_info_index, | |
| 2572 "Class is both outer and inner class in class file %s", CHECK_0); | |
| 2573 } | |
| 2574 // Access flags | |
| 2575 AccessFlags inner_access_flags; | |
| 2576 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
| 2577 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
| 2578 // Set abstract bit for old class files for backward compatibility | |
| 2579 flags |= JVM_ACC_ABSTRACT; | |
| 2580 } | |
| 2581 verify_legal_class_modifiers(flags, CHECK_0); | |
| 2582 inner_access_flags.set_flags(flags); | |
| 2583 | |
|
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|
2584 inner_classes->at_put(index++, inner_class_info_index); |
|
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|
2585 inner_classes->at_put(index++, outer_class_info_index); |
|
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|
2586 inner_classes->at_put(index++, inner_name_index); |
|
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|
2587 inner_classes->at_put(index++, inner_access_flags.as_short()); |
| 0 | 2588 } |
| 2589 | |
| 2590 // 4347400: make sure there's no duplicate entry in the classes array | |
| 2591 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
|
5967
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changeset
|
2592 for(int i = 0; i < length * 4; i += 4) { |
|
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diff
changeset
|
2593 for(int j = i + 4; j < length * 4; j += 4) { |
|
6725
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|
2594 guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
|
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|
2595 inner_classes->at(i+1) != inner_classes->at(j+1) || |
|
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|
2596 inner_classes->at(i+2) != inner_classes->at(j+2) || |
|
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changeset
|
2597 inner_classes->at(i+3) != inner_classes->at(j+3)), |
| 0 | 2598 "Duplicate entry in InnerClasses in class file %s", |
| 2599 CHECK_0); | |
| 2600 } | |
| 2601 } | |
| 2602 } | |
| 2603 | |
|
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4755
diff
changeset
|
2604 // Set EnclosingMethod class and method indexes. |
|
f7c4174b33ba
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4755
diff
changeset
|
2605 if (parsed_enclosingmethod_attribute) { |
|
6725
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|
2606 inner_classes->at_put(index++, enclosing_method_class_index); |
|
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|
2607 inner_classes->at_put(index++, enclosing_method_method_index); |
|
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4755
diff
changeset
|
2608 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2609 assert(index == size, "wrong size"); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4755
diff
changeset
|
2610 |
|
6725
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changeset
|
2611 // Update InstanceKlass with inner class info. |
|
6222
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6100
diff
changeset
|
2612 set_class_inner_classes(inner_classes); |
|
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2613 |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2614 // Restore buffer's current position. |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2615 cfs->set_current(current_mark); |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2616 |
| 0 | 2617 return length; |
| 2618 } | |
| 2619 | |
|
6222
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6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2620 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2621 set_class_synthetic_flag(true); |
| 0 | 2622 } |
| 2623 | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2624 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS) { |
| 0 | 2625 ClassFileStream* cfs = stream(); |
| 2626 u2 signature_index = cfs->get_u2(CHECK); | |
| 2627 check_property( | |
| 2628 valid_cp_range(signature_index, cp->length()) && | |
| 2629 cp->tag_at(signature_index).is_utf8(), | |
| 2630 "Invalid constant pool index %u in Signature attribute in class file %s", | |
| 2631 signature_index, CHECK); | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2632 set_class_generic_signature(cp->symbol_at(signature_index)); |
| 0 | 2633 } |
| 2634 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
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|
2635 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2636 constantPoolHandle cp, |
|
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2637 u4 attribute_byte_length, TRAPS) { |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2638 ClassFileStream* cfs = stream(); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2639 u1* current_start = cfs->current(); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2640 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2641 cfs->guarantee_more(2, CHECK); // length |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2642 int attribute_array_length = cfs->get_u2_fast(); |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2643 |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2644 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2645 "Short 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
|
2646 CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2647 |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2648 // The attribute contains a counted array of counted tuples of shorts, |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2649 // represending bootstrap specifiers: |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2650 // length*{bootstrap_method_index, argument_count*{argument_index}} |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2651 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2652 // operand_count = number of shorts in attr, except for leading length |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2653 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2654 // The attribute is copied into a short[] array. |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2655 // The array begins with a series of short[2] pairs, one for each tuple. |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2656 int index_size = (attribute_array_length * 2); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2657 |
|
6725
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changeset
|
2658 Array<u2>* operands = MetadataFactory::new_array<u2>(loader_data, index_size + operand_count, CHECK); |
|
2011
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diff
changeset
|
2659 |
|
dad31fc330cd
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diff
changeset
|
2660 int operand_fill_index = index_size; |
|
dad31fc330cd
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1972
diff
changeset
|
2661 int cp_size = cp->length(); |
|
dad31fc330cd
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diff
changeset
|
2662 |
|
dad31fc330cd
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diff
changeset
|
2663 for (int n = 0; n < attribute_array_length; n++) { |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2664 // Store a 32-bit offset into the header of the operand array. |
|
6725
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6266
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changeset
|
2665 ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
|
2011
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diff
changeset
|
2666 |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2667 // 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
|
2668 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2669 u2 bootstrap_method_index = cfs->get_u2_fast(); |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2670 u2 argument_count = cfs->get_u2_fast(); |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2671 check_property( |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2672 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
|
2673 cp->tag_at(bootstrap_method_index).is_method_handle(), |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2674 "bootstrap_method_index %u has bad constant type in class file %s", |
| 2085 | 2675 bootstrap_method_index, |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2676 CHECK); |
|
6725
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coleenp
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6266
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changeset
|
2677 operands->at_put(operand_fill_index++, bootstrap_method_index); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2678 operands->at_put(operand_fill_index++, argument_count); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2679 |
|
dad31fc330cd
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jrose
parents:
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diff
changeset
|
2680 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2681 for (int j = 0; j < argument_count; j++) { |
| 2085 | 2682 u2 argument_index = cfs->get_u2_fast(); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2683 check_property( |
| 2085 | 2684 valid_cp_range(argument_index, cp_size) && |
| 2685 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
|
2686 "argument_index %u has bad constant type in class file %s", |
| 2085 | 2687 argument_index, |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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diff
changeset
|
2688 CHECK); |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
2689 operands->at_put(operand_fill_index++, argument_index); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2690 } |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
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diff
changeset
|
2691 } |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2692 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2693 assert(operand_fill_index == operands->length(), "exact fill"); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
2694 assert(ConstantPool::operand_array_length(operands) == attribute_array_length, "correct decode"); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2695 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2696 u1* current_end = cfs->current(); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2697 guarantee_property(current_end == current_start + attribute_byte_length, |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2698 "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
|
2699 CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2700 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
2701 cp->set_operands(operands); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2702 } |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2703 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
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diff
changeset
|
2704 void ClassFileParser::parse_classfile_attributes(ClassLoaderData* loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
2705 constantPoolHandle cp, |
|
6222
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6711908: JVM needs direct access to some annotations
jrose
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diff
changeset
|
2706 ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
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diff
changeset
|
2707 TRAPS) { |
| 0 | 2708 ClassFileStream* cfs = stream(); |
| 2709 // Set inner classes attribute to default sentinel | |
|
6725
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changeset
|
2710 set_class_inner_classes(Universe::the_empty_short_array()); |
| 0 | 2711 cfs->guarantee_more(2, CHECK); // attributes_count |
| 2712 u2 attributes_count = cfs->get_u2_fast(); | |
| 2713 bool parsed_sourcefile_attribute = false; | |
| 2714 bool parsed_innerclasses_attribute = false; | |
| 2715 bool parsed_enclosingmethod_attribute = false; | |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2716 bool parsed_bootstrap_methods_attribute = false; |
| 0 | 2717 u1* runtime_visible_annotations = NULL; |
| 2718 int runtime_visible_annotations_length = 0; | |
| 2719 u1* runtime_invisible_annotations = NULL; | |
| 2720 int runtime_invisible_annotations_length = 0; | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2721 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
|
2722 u4 inner_classes_attribute_length = 0; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2723 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
|
2724 u2 enclosing_method_method_index = 0; |
| 0 | 2725 // Iterate over attributes |
| 2726 while (attributes_count--) { | |
| 2727 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
| 2728 u2 attribute_name_index = cfs->get_u2_fast(); | |
| 2729 u4 attribute_length = cfs->get_u4_fast(); | |
| 2730 check_property( | |
| 2731 valid_cp_range(attribute_name_index, cp->length()) && | |
| 2732 cp->tag_at(attribute_name_index).is_utf8(), | |
| 2733 "Attribute name has bad constant pool index %u in class file %s", | |
| 2734 attribute_name_index, CHECK); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2735 Symbol* tag = cp->symbol_at(attribute_name_index); |
| 0 | 2736 if (tag == vmSymbols::tag_source_file()) { |
| 2737 // Check for SourceFile tag | |
| 2738 if (_need_verify) { | |
| 2739 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
| 2740 } | |
| 2741 if (parsed_sourcefile_attribute) { | |
| 2742 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
| 2743 } else { | |
| 2744 parsed_sourcefile_attribute = true; | |
| 2745 } | |
|
6222
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parents:
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diff
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|
2746 parse_classfile_sourcefile_attribute(cp, CHECK); |
| 0 | 2747 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
| 2748 // Check for SourceDebugExtension tag | |
|
6222
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6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2749 parse_classfile_source_debug_extension_attribute(cp, (int)attribute_length, CHECK); |
| 0 | 2750 } else if (tag == vmSymbols::tag_inner_classes()) { |
| 2751 // Check for InnerClasses tag | |
| 2752 if (parsed_innerclasses_attribute) { | |
| 2753 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
| 2754 } else { | |
| 2755 parsed_innerclasses_attribute = true; | |
| 2756 } | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2757 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
|
2758 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
|
2759 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
| 0 | 2760 } else if (tag == vmSymbols::tag_synthetic()) { |
| 2761 // Check for Synthetic tag | |
| 2762 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
| 2763 if (attribute_length != 0) { | |
| 2764 classfile_parse_error( | |
| 2765 "Invalid Synthetic classfile attribute length %u in class file %s", | |
| 2766 attribute_length, CHECK); | |
| 2767 } | |
|
6222
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6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2768 parse_classfile_synthetic_attribute(cp, CHECK); |
| 0 | 2769 } else if (tag == vmSymbols::tag_deprecated()) { |
| 2770 // Check for Deprecatd tag - 4276120 | |
| 2771 if (attribute_length != 0) { | |
| 2772 classfile_parse_error( | |
| 2773 "Invalid Deprecated classfile attribute length %u in class file %s", | |
| 2774 attribute_length, CHECK); | |
| 2775 } | |
| 2776 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 2777 if (tag == vmSymbols::tag_signature()) { | |
| 2778 if (attribute_length != 2) { | |
| 2779 classfile_parse_error( | |
| 2780 "Wrong Signature attribute length %u in class file %s", | |
| 2781 attribute_length, CHECK); | |
| 2782 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2783 parse_classfile_signature_attribute(cp, CHECK); |
| 0 | 2784 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
| 2785 runtime_visible_annotations_length = attribute_length; | |
| 2786 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 2787 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2788 parse_annotations(runtime_visible_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2789 runtime_visible_annotations_length, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2790 cp, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2791 parsed_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2792 CHECK); |
| 0 | 2793 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
| 2794 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 2795 runtime_invisible_annotations_length = attribute_length; | |
| 2796 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 2797 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 2798 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
| 2799 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
| 2800 if (parsed_enclosingmethod_attribute) { | |
| 2801 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
| 2802 } else { | |
| 2803 parsed_enclosingmethod_attribute = true; | |
| 2804 } | |
| 2805 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
|
2806 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
|
2807 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
|
2808 if (enclosing_method_class_index == 0) { |
| 0 | 2809 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
| 2810 } | |
| 2811 // 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
|
2812 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
|
2813 !is_klass_reference(cp, enclosing_method_class_index)) { |
| 0 | 2814 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
| 2815 } | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2816 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
|
2817 (!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
|
2818 !cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
| 0 | 2819 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
| 2820 } | |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2821 } 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
|
2822 _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
|
2823 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
|
2824 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
|
2825 parsed_bootstrap_methods_attribute = true; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2826 parse_classfile_bootstrap_methods_attribute(loader_data, cp, attribute_length, CHECK); |
| 0 | 2827 } else { |
| 2828 // Unknown attribute | |
| 2829 cfs->skip_u1(attribute_length, CHECK); | |
| 2830 } | |
| 2831 } else { | |
| 2832 // Unknown attribute | |
| 2833 cfs->skip_u1(attribute_length, CHECK); | |
| 2834 } | |
| 2835 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2836 AnnotationArray* annotations = assemble_annotations(loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2837 runtime_visible_annotations, |
| 0 | 2838 runtime_visible_annotations_length, |
| 2839 runtime_invisible_annotations, | |
| 2840 runtime_invisible_annotations_length, | |
| 2841 CHECK); | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2842 set_class_annotations(annotations); |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2843 |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2844 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
|
2845 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
|
2846 loader_data, |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2847 inner_classes_attribute_start, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2848 parsed_innerclasses_attribute, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2849 enclosing_method_class_index, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2850 enclosing_method_method_index, |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2851 cp, CHECK); |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2852 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
|
2853 guarantee_property( |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2854 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
|
2855 "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
|
2856 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2857 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2858 |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2859 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
|
2860 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
|
2861 "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
|
2862 } |
| 0 | 2863 } |
| 2864 | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2865 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2866 if (_synthetic_flag) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2867 k->set_is_synthetic(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2868 if (_sourcefile != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2869 _sourcefile->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2870 k->set_source_file_name(_sourcefile); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2871 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2872 if (_generic_signature != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2873 _generic_signature->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2874 k->set_generic_signature(_generic_signature); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2875 } |
| 6226 | 2876 if (_sde_buffer != NULL) { |
| 2877 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
| 2878 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
2879 k->set_inner_classes(_inner_classes); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2880 if (_annotations != NULL) { |
|
da91efe96a93
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coleenp
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6266
diff
changeset
|
2881 k->annotations()->set_class_annotations(_annotations); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2882 } |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2883 } |
| 0 | 2884 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2885 AnnotationArray* ClassFileParser::assemble_annotations(ClassLoaderData* loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2886 u1* runtime_visible_annotations, |
| 0 | 2887 int runtime_visible_annotations_length, |
| 2888 u1* runtime_invisible_annotations, | |
| 2889 int runtime_invisible_annotations_length, TRAPS) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2890 AnnotationArray* annotations = NULL; |
| 0 | 2891 if (runtime_visible_annotations != NULL || |
| 2892 runtime_invisible_annotations != NULL) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2893 annotations = MetadataFactory::new_array<u1>(loader_data, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2894 runtime_visible_annotations_length + |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2895 runtime_invisible_annotations_length, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2896 CHECK_(annotations)); |
| 0 | 2897 if (runtime_visible_annotations != NULL) { |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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changeset
|
2898 for (int i = 0; i < runtime_visible_annotations_length; i++) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2899 annotations->at_put(i, runtime_visible_annotations[i]); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2900 } |
| 0 | 2901 } |
| 2902 if (runtime_invisible_annotations != NULL) { | |
|
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
2903 for (int i = 0; i < runtime_invisible_annotations_length; i++) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2904 int append = runtime_visible_annotations_length+i; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2905 annotations->at_put(append, runtime_invisible_annotations[i]); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2906 } |
| 0 | 2907 } |
| 2908 } | |
| 2909 return annotations; | |
| 2910 } | |
| 2911 | |
| 2912 | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
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changeset
|
2913 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
| 0 | 2914 Handle class_loader, |
| 2915 Handle protection_domain, | |
| 710 | 2916 KlassHandle host_klass, |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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196
diff
changeset
|
2917 GrowableArray<Handle>* cp_patches, |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2918 TempNewSymbol& parsed_name, |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
2919 bool verify, |
| 0 | 2920 TRAPS) { |
|
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2921 // When a retransformable agent is attached, JVMTI caches the |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2922 // class bytes that existed before the first retransformation. |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2923 // If RedefineClasses() was used before the retransformable |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2924 // agent attached, then the cached class bytes may not be the |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2925 // original class bytes. |
| 0 | 2926 unsigned char *cached_class_file_bytes = NULL; |
| 2927 jint cached_class_file_length; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2928 ClassLoaderData* loader_data = ClassLoaderData::class_loader_data(class_loader()); |
| 0 | 2929 |
| 2930 ClassFileStream* cfs = stream(); | |
| 2931 // Timing | |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2932 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2933 JavaThread* jt = (JavaThread*) THREAD; |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2934 |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2935 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2936 ClassLoader::perf_class_parse_selftime(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2937 NULL, |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2938 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2939 jt->get_thread_stat()->perf_timers_addr(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2940 PerfClassTraceTime::PARSE_CLASS); |
| 0 | 2941 |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2942 init_parsed_class_attributes(); |
| 0 | 2943 |
| 2944 if (JvmtiExport::should_post_class_file_load_hook()) { | |
|
4751
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2945 // Get the cached class file bytes (if any) from the class that |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2946 // is being redefined or retransformed. We use jvmti_thread_state() |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2947 // instead of JvmtiThreadState::state_for(jt) so we don't allocate |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2948 // a JvmtiThreadState any earlier than necessary. This will help |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2949 // avoid the bug described by 7126851. |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2950 JvmtiThreadState *state = jt->jvmti_thread_state(); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2951 if (state != NULL) { |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2952 KlassHandle *h_class_being_redefined = |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2953 state->get_class_being_redefined(); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2954 if (h_class_being_redefined != NULL) { |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2955 instanceKlassHandle ikh_class_being_redefined = |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2956 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2957 cached_class_file_bytes = |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2958 ikh_class_being_redefined->get_cached_class_file_bytes(); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2959 cached_class_file_length = |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2960 ikh_class_being_redefined->get_cached_class_file_len(); |
|
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
2961 } |
|
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2962 } |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2963 |
| 0 | 2964 unsigned char* ptr = cfs->buffer(); |
| 2965 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
| 2966 | |
| 2967 JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain, | |
| 2968 &ptr, &end_ptr, | |
| 2969 &cached_class_file_bytes, | |
| 2970 &cached_class_file_length); | |
| 2971 | |
| 2972 if (ptr != cfs->buffer()) { | |
| 2973 // JVMTI agent has modified class file data. | |
| 2974 // Set new class file stream using JVMTI agent modified | |
| 2975 // class file data. | |
| 2976 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
| 2977 set_stream(cfs); | |
| 2978 } | |
| 2979 } | |
| 2980 | |
| 710 | 2981 _host_klass = host_klass; |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2982 _cp_patches = cp_patches; |
| 0 | 2983 |
| 2984 instanceKlassHandle nullHandle; | |
| 2985 | |
| 2986 // Figure out whether we can skip format checking (matching classic VM behavior) | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
2987 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
| 0 | 2988 |
| 2989 // Set the verify flag in stream | |
| 2990 cfs->set_verify(_need_verify); | |
| 2991 | |
| 2992 // Save the class file name for easier error message printing. | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
2993 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
| 0 | 2994 |
| 2995 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
| 2996 // Magic value | |
| 2997 u4 magic = cfs->get_u4_fast(); | |
| 2998 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
| 2999 "Incompatible magic value %u in class file %s", | |
| 3000 magic, CHECK_(nullHandle)); | |
| 3001 | |
| 3002 // Version numbers | |
| 3003 u2 minor_version = cfs->get_u2_fast(); | |
| 3004 u2 major_version = cfs->get_u2_fast(); | |
| 3005 | |
| 3006 // Check version numbers - we check this even with verifier off | |
| 3007 if (!is_supported_version(major_version, minor_version)) { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3008 if (name == NULL) { |
| 0 | 3009 Exceptions::fthrow( |
| 3010 THREAD_AND_LOCATION, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3011 vmSymbols::java_lang_UnsupportedClassVersionError(), |
| 0 | 3012 "Unsupported major.minor version %u.%u", |
| 3013 major_version, | |
| 3014 minor_version); | |
| 3015 } else { | |
| 3016 ResourceMark rm(THREAD); | |
| 3017 Exceptions::fthrow( | |
| 3018 THREAD_AND_LOCATION, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3019 vmSymbols::java_lang_UnsupportedClassVersionError(), |
| 0 | 3020 "%s : Unsupported major.minor version %u.%u", |
| 3021 name->as_C_string(), | |
| 3022 major_version, | |
| 3023 minor_version); | |
| 3024 } | |
| 3025 return nullHandle; | |
| 3026 } | |
| 3027 | |
| 3028 _major_version = major_version; | |
| 3029 _minor_version = minor_version; | |
| 3030 | |
| 3031 | |
| 3032 // Check if verification needs to be relaxed for this class file | |
| 3033 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
| 3034 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
| 3035 | |
| 3036 // Constant pool | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3037 constantPoolHandle cp = parse_constant_pool(loader_data, CHECK_(nullHandle)); |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3038 ConstantPoolCleaner error_handler(cp); // set constant pool to be cleaned up. |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3039 |
| 0 | 3040 int cp_size = cp->length(); |
| 3041 | |
| 3042 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
| 3043 | |
| 3044 // Access flags | |
| 3045 AccessFlags access_flags; | |
| 3046 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
| 3047 | |
| 3048 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
| 3049 // Set abstract bit for old class files for backward compatibility | |
| 3050 flags |= JVM_ACC_ABSTRACT; | |
| 3051 } | |
| 3052 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
| 3053 access_flags.set_flags(flags); | |
| 3054 | |
| 3055 // This class and superclass | |
| 3056 instanceKlassHandle super_klass; | |
| 3057 u2 this_class_index = cfs->get_u2_fast(); | |
| 3058 check_property( | |
| 3059 valid_cp_range(this_class_index, cp_size) && | |
| 3060 cp->tag_at(this_class_index).is_unresolved_klass(), | |
| 3061 "Invalid this class index %u in constant pool in class file %s", | |
| 3062 this_class_index, CHECK_(nullHandle)); | |
| 3063 | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3064 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3065 assert(class_name != NULL, "class_name can't be null"); |
| 0 | 3066 |
| 3067 // It's important to set parsed_name *before* resolving the super class. | |
| 3068 // (it's used for cleanup by the caller if parsing fails) | |
| 3069 parsed_name = class_name; | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3070 // parsed_name is returned and can be used if there's an error, so add to |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3071 // its reference count. Caller will decrement the refcount. |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3072 parsed_name->increment_refcount(); |
| 0 | 3073 |
| 3074 // Update _class_name which could be null previously to be class_name | |
| 3075 _class_name = class_name; | |
| 3076 | |
| 3077 // Don't need to check whether this class name is legal or not. | |
| 3078 // It has been checked when constant pool is parsed. | |
| 3079 // However, make sure it is not an array type. | |
| 3080 if (_need_verify) { | |
| 3081 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
| 3082 "Bad class name in class file %s", | |
| 3083 CHECK_(nullHandle)); | |
| 3084 } | |
| 3085 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3086 Klass* preserve_this_klass; // for storing result across HandleMark |
| 0 | 3087 |
| 3088 // release all handles when parsing is done | |
| 3089 { HandleMark hm(THREAD); | |
| 3090 | |
| 3091 // Checks if name in class file matches requested name | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3092 if (name != NULL && class_name != name) { |
| 0 | 3093 ResourceMark rm(THREAD); |
| 3094 Exceptions::fthrow( | |
| 3095 THREAD_AND_LOCATION, | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
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changeset
|
3096 vmSymbols::java_lang_NoClassDefFoundError(), |
| 0 | 3097 "%s (wrong name: %s)", |
| 3098 name->as_C_string(), | |
| 3099 class_name->as_C_string() | |
| 3100 ); | |
| 3101 return nullHandle; | |
| 3102 } | |
| 3103 | |
| 3104 if (TraceClassLoadingPreorder) { | |
|
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3105 tty->print("[Loading %s", name->as_klass_external_name()); |
| 0 | 3106 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
| 3107 tty->print_cr("]"); | |
| 3108 } | |
| 3109 | |
| 3110 u2 super_class_index = cfs->get_u2_fast(); | |
| 3111 if (super_class_index == 0) { | |
|
2177
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|
3112 check_property(class_name == vmSymbols::java_lang_Object(), |
| 0 | 3113 "Invalid superclass index %u in class file %s", |
| 3114 super_class_index, | |
| 3115 CHECK_(nullHandle)); | |
| 3116 } else { | |
| 3117 check_property(valid_cp_range(super_class_index, cp_size) && | |
|
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|
3118 is_klass_reference(cp, super_class_index), |
| 0 | 3119 "Invalid superclass index %u in class file %s", |
| 3120 super_class_index, | |
| 3121 CHECK_(nullHandle)); | |
| 3122 // The class name should be legal because it is checked when parsing constant pool. | |
| 3123 // However, make sure it is not an array type. | |
|
431
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|
3124 bool is_array = false; |
|
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|
3125 if (cp->tag_at(super_class_index).is_klass()) { |
|
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|
3126 super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
|
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|
3127 if (_need_verify) |
|
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|
3128 is_array = super_klass->oop_is_array(); |
|
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|
3129 } else if (_need_verify) { |
|
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|
3130 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
|
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|
3131 } |
| 0 | 3132 if (_need_verify) { |
|
431
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|
3133 guarantee_property(!is_array, |
| 0 | 3134 "Bad superclass name in class file %s", CHECK_(nullHandle)); |
| 3135 } | |
| 3136 } | |
| 3137 | |
| 3138 // Interfaces | |
| 3139 u2 itfs_len = cfs->get_u2_fast(); | |
|
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3140 Array<Klass*>* local_interfaces; |
| 0 | 3141 if (itfs_len == 0) { |
|
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3142 local_interfaces = Universe::the_empty_klass_array(); |
| 0 | 3143 } else { |
|
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3144 local_interfaces = parse_interfaces(cp, itfs_len, loader_data, protection_domain, _class_name, CHECK_(nullHandle)); |
| 0 | 3145 } |
| 3146 | |
|
4744
cd5d8cafcc84
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jiangli
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3938
diff
changeset
|
3147 u2 java_fields_count = 0; |
| 0 | 3148 // Fields (offsets are filled in later) |
| 3938 | 3149 FieldAllocationCount fac; |
|
6725
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3150 Array<AnnotationArray*>* fields_annotations = NULL; |
|
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|
3151 Array<u2>* fields = parse_fields(loader_data, class_name, cp, access_flags.is_interface(), &fac, &fields_annotations, |
| 3938 | 3152 &java_fields_count, |
| 3153 CHECK_(nullHandle)); | |
| 0 | 3154 // Methods |
| 3155 bool has_final_method = false; | |
| 3156 AccessFlags promoted_flags; | |
| 3157 promoted_flags.set_flags(0); | |
| 3158 // These need to be oop pointers because they are allocated lazily | |
| 3159 // inside parse_methods inside a nested HandleMark | |
|
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|
3160 Array<AnnotationArray*>* methods_annotations = NULL; |
|
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|
3161 Array<AnnotationArray*>* methods_parameter_annotations = NULL; |
|
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|
3162 Array<AnnotationArray*>* methods_default_annotations = NULL; |
|
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|
3163 Array<Method*>* methods = parse_methods(loader_data, |
|
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changeset
|
3164 cp, access_flags.is_interface(), |
| 0 | 3165 &promoted_flags, |
| 3166 &has_final_method, | |
|
6725
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|
3167 &methods_annotations, |
|
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|
3168 &methods_parameter_annotations, |
|
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|
3169 &methods_default_annotations, |
| 0 | 3170 CHECK_(nullHandle)); |
| 3171 | |
|
6222
6d8f36bcef55
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diff
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|
3172 // Additional attributes |
|
6d8f36bcef55
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diff
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|
3173 ClassAnnotationCollector parsed_annotations; |
|
6725
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|
3174 parse_classfile_attributes(loader_data, cp, &parsed_annotations, CHECK_(nullHandle)); |
|
6222
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|
3175 |
|
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diff
changeset
|
3176 // Make sure this is the end of class file stream |
|
6d8f36bcef55
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jrose
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diff
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|
3177 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
|
6d8f36bcef55
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diff
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|
3178 |
| 0 | 3179 // We check super class after class file is parsed and format is checked |
|
431
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|
3180 if (super_class_index > 0 && super_klass.is_null()) { |
|
2177
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|
3181 Symbol* sk = cp->klass_name_at(super_class_index); |
| 0 | 3182 if (access_flags.is_interface()) { |
| 3183 // Before attempting to resolve the superclass, check for class format | |
| 3184 // errors not checked yet. | |
|
2177
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|
3185 guarantee_property(sk == vmSymbols::java_lang_Object(), |
| 0 | 3186 "Interfaces must have java.lang.Object as superclass in class file %s", |
| 3187 CHECK_(nullHandle)); | |
| 3188 } | |
|
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|
3189 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
| 0 | 3190 sk, |
| 3191 class_loader, | |
| 3192 protection_domain, | |
| 3193 true, | |
| 3194 CHECK_(nullHandle)); | |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
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710
diff
changeset
|
3195 |
| 0 | 3196 KlassHandle kh (THREAD, k); |
| 3197 super_klass = instanceKlassHandle(THREAD, kh()); | |
|
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
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431
diff
changeset
|
3198 if (LinkWellKnownClasses) // my super class is well known to me |
|
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
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431
diff
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|
3199 cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve |
|
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|
3200 } |
|
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|
3201 if (super_klass.not_null()) { |
| 0 | 3202 if (super_klass->is_interface()) { |
| 3203 ResourceMark rm(THREAD); | |
| 3204 Exceptions::fthrow( | |
| 3205 THREAD_AND_LOCATION, | |
|
2177
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coleenp
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2085
diff
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|
3206 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 3207 "class %s has interface %s as super class", |
| 3208 class_name->as_klass_external_name(), | |
| 3209 super_klass->external_name() | |
| 3210 ); | |
| 3211 return nullHandle; | |
| 3212 } | |
| 3213 // Make sure super class is not final | |
| 3214 if (super_klass->is_final()) { | |
| 3215 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
| 3216 } | |
| 3217 } | |
| 3218 | |
| 3219 // Compute the transitive list of all unique interfaces implemented by this class | |
|
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
3220 Array<Klass*>* transitive_interfaces = compute_transitive_interfaces(loader_data, super_klass, local_interfaces, CHECK_(nullHandle)); |
| 0 | 3221 |
| 3222 // sort methods | |
|
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
3223 Array<int>* method_ordering = sort_methods(loader_data, |
|
da91efe96a93
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coleenp
parents:
6266
diff
changeset
|
3224 methods, |
| 0 | 3225 methods_annotations, |
| 3226 methods_parameter_annotations, | |
| 3227 methods_default_annotations, | |
| 3228 CHECK_(nullHandle)); | |
| 3229 | |
| 3230 // promote flags from parse_methods() to the klass' flags | |
| 3231 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
| 3232 | |
| 3233 // Size of Java vtable (in words) | |
| 3234 int vtable_size = 0; | |
| 3235 int itable_size = 0; | |
| 3236 int num_miranda_methods = 0; | |
| 3237 | |
| 3238 klassVtable::compute_vtable_size_and_num_mirandas(vtable_size, | |
| 3239 num_miranda_methods, | |
| 3240 super_klass(), | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3241 methods, |
| 0 | 3242 access_flags, |
|
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3243 class_loader, |
|
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3244 class_name, |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3245 local_interfaces, |
|
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3246 CHECK_(nullHandle)); |
| 0 | 3247 |
| 3248 // Size of Java itable (in words) | |
| 3249 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
| 3250 | |
| 3251 // Field size and offset computation | |
| 3252 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
| 3253 #ifndef PRODUCT | |
| 3254 int orig_nonstatic_field_size = 0; | |
| 3255 #endif | |
| 3256 int static_field_size = 0; | |
| 3257 int next_static_oop_offset; | |
| 3258 int next_static_double_offset; | |
| 3259 int next_static_word_offset; | |
| 3260 int next_static_short_offset; | |
| 3261 int next_static_byte_offset; | |
| 3262 int next_static_type_offset; | |
| 3263 int next_nonstatic_oop_offset; | |
| 3264 int next_nonstatic_double_offset; | |
| 3265 int next_nonstatic_word_offset; | |
| 3266 int next_nonstatic_short_offset; | |
| 3267 int next_nonstatic_byte_offset; | |
| 3268 int next_nonstatic_type_offset; | |
| 3269 int first_nonstatic_oop_offset; | |
| 3270 int first_nonstatic_field_offset; | |
| 3271 int next_nonstatic_field_offset; | |
| 3272 | |
| 3273 // Calculate the starting byte offsets | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3274 next_static_oop_offset = instanceMirrorKlass::offset_of_static_fields(); |
| 0 | 3275 next_static_double_offset = next_static_oop_offset + |
| 3938 | 3276 (fac.count[STATIC_OOP] * heapOopSize); |
| 3277 if ( fac.count[STATIC_DOUBLE] && | |
| 0 | 3278 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
| 3279 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
| 3280 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
| 3281 } | |
| 3282 | |
| 3283 next_static_word_offset = next_static_double_offset + | |
| 3938 | 3284 (fac.count[STATIC_DOUBLE] * BytesPerLong); |
| 0 | 3285 next_static_short_offset = next_static_word_offset + |
| 3938 | 3286 (fac.count[STATIC_WORD] * BytesPerInt); |
| 0 | 3287 next_static_byte_offset = next_static_short_offset + |
| 3938 | 3288 (fac.count[STATIC_SHORT] * BytesPerShort); |
| 0 | 3289 next_static_type_offset = align_size_up((next_static_byte_offset + |
| 3938 | 3290 fac.count[STATIC_BYTE] ), wordSize ); |
| 0 | 3291 static_field_size = (next_static_type_offset - |
| 3292 next_static_oop_offset) / wordSize; | |
|
2376
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2357
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|
3293 |
|
165
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kvn
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|
3294 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
|
437d03ea40b1
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diff
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|
3295 nonstatic_field_size * heapOopSize; |
| 0 | 3296 next_nonstatic_field_offset = first_nonstatic_field_offset; |
| 3297 | |
| 3938 | 3298 unsigned int nonstatic_double_count = fac.count[NONSTATIC_DOUBLE]; |
| 3299 unsigned int nonstatic_word_count = fac.count[NONSTATIC_WORD]; | |
| 3300 unsigned int nonstatic_short_count = fac.count[NONSTATIC_SHORT]; | |
| 3301 unsigned int nonstatic_byte_count = fac.count[NONSTATIC_BYTE]; | |
| 3302 unsigned int nonstatic_oop_count = fac.count[NONSTATIC_OOP]; | |
| 0 | 3303 |
|
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
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|
3304 bool super_has_nonstatic_fields = |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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92
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|
3305 (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
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|
3306 bool has_nonstatic_fields = super_has_nonstatic_fields || |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
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|
3307 ((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
|
3308 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
|
3309 nonstatic_oop_count) != 0); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
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|
3310 |
|
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92
diff
changeset
|
3311 |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3312 // 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
|
3313 int* nonstatic_oop_offsets; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3314 unsigned int* nonstatic_oop_counts; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3315 unsigned int nonstatic_oop_map_count = 0; |
| 0 | 3316 |
| 3317 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
|
939
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jcoomes
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938
diff
changeset
|
3318 THREAD, int, nonstatic_oop_count + 1); |
| 938 | 3319 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
|
939
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jcoomes
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938
diff
changeset
|
3320 THREAD, unsigned int, nonstatic_oop_count + 1); |
| 0 | 3321 |
| 3938 | 3322 first_nonstatic_oop_offset = 0; // will be set for first oop field |
| 0 | 3323 |
| 3324 #ifndef PRODUCT | |
| 3325 if( PrintCompactFieldsSavings ) { | |
| 3326 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
|
113
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92
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|
3327 (nonstatic_oop_count * heapOopSize); |
| 0 | 3328 if ( nonstatic_double_count > 0 ) { |
| 3329 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
| 3330 } | |
| 3331 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
| 3332 (nonstatic_double_count * BytesPerLong); | |
| 3333 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
| 3334 (nonstatic_word_count * BytesPerInt); | |
| 3335 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
| 3336 (nonstatic_short_count * BytesPerShort); | |
| 3337 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
|
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|
3338 nonstatic_byte_count ), heapOopSize ); |
| 0 | 3339 orig_nonstatic_field_size = nonstatic_field_size + |
|
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changeset
|
3340 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
| 0 | 3341 } |
| 3342 #endif | |
| 3343 bool compact_fields = CompactFields; | |
| 3344 int allocation_style = FieldsAllocationStyle; | |
|
1366
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|
3345 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
|
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diff
changeset
|
3346 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
| 0 | 3347 allocation_style = 1; // Optimistic |
| 3348 } | |
| 3349 | |
| 3350 // The next classes have predefined hard-coded fields offsets | |
| 3351 // (see in JavaClasses::compute_hard_coded_offsets()). | |
| 3352 // Use default fields allocation order for them. | |
| 3353 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
3354 (class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
|
3582bf76420e
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|
3355 class_name == vmSymbols::java_lang_Class() || |
|
3582bf76420e
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|
3356 class_name == vmSymbols::java_lang_ClassLoader() || |
|
3582bf76420e
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|
3357 class_name == vmSymbols::java_lang_ref_Reference() || |
|
3582bf76420e
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diff
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|
3358 class_name == vmSymbols::java_lang_ref_SoftReference() || |
|
3582bf76420e
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|
3359 class_name == vmSymbols::java_lang_StackTraceElement() || |
|
3582bf76420e
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|
3360 class_name == vmSymbols::java_lang_String() || |
|
3582bf76420e
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|
3361 class_name == vmSymbols::java_lang_Throwable() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
3362 class_name == vmSymbols::java_lang_Boolean() || |
|
3582bf76420e
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|
3363 class_name == vmSymbols::java_lang_Character() || |
|
3582bf76420e
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|
3364 class_name == vmSymbols::java_lang_Float() || |
|
3582bf76420e
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|
3365 class_name == vmSymbols::java_lang_Double() || |
|
3582bf76420e
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|
3366 class_name == vmSymbols::java_lang_Byte() || |
|
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|
3367 class_name == vmSymbols::java_lang_Short() || |
|
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|
3368 class_name == vmSymbols::java_lang_Integer() || |
|
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|
3369 class_name == vmSymbols::java_lang_Long())) { |
| 0 | 3370 allocation_style = 0; // Allocate oops first |
| 3371 compact_fields = false; // Don't compact fields | |
| 3372 } | |
| 3373 | |
| 3374 if( allocation_style == 0 ) { | |
| 3375 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes | |
| 3376 next_nonstatic_oop_offset = next_nonstatic_field_offset; | |
| 3377 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
|
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|
3378 (nonstatic_oop_count * heapOopSize); |
| 0 | 3379 } else if( allocation_style == 1 ) { |
| 3380 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops | |
| 3381 next_nonstatic_double_offset = next_nonstatic_field_offset; | |
|
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|
3382 } else if( allocation_style == 2 ) { |
|
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|
3383 // Fields allocation: oops fields in super and sub classes are together. |
|
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diff
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|
3384 if( nonstatic_field_size > 0 && super_klass() != NULL && |
|
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diff
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|
3385 super_klass->nonstatic_oop_map_size() > 0 ) { |
|
3786
498c6cf70f7e
7058036: FieldsAllocationStyle=2 does not work in 32-bit VM
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3245
diff
changeset
|
3386 int map_count = super_klass->nonstatic_oop_map_count(); |
|
1366
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diff
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|
3387 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
|
3786
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3245
diff
changeset
|
3388 OopMapBlock* last_map = first_map + map_count - 1; |
|
1366
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diff
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|
3389 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
|
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diff
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|
3390 if (next_offset == next_nonstatic_field_offset) { |
|
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diff
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|
3391 allocation_style = 0; // allocate oops first |
|
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diff
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|
3392 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
|
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|
3393 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
|
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diff
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|
3394 (nonstatic_oop_count * heapOopSize); |
|
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1144
diff
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|
3395 } |
|
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diff
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|
3396 } |
|
b9d85fcdf743
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diff
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|
3397 if( allocation_style == 2 ) { |
|
b9d85fcdf743
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1144
diff
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|
3398 allocation_style = 1; // allocate oops last |
|
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1144
diff
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|
3399 next_nonstatic_double_offset = next_nonstatic_field_offset; |
|
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1144
diff
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|
3400 } |
| 0 | 3401 } else { |
| 3402 ShouldNotReachHere(); | |
| 3403 } | |
| 3404 | |
| 3405 int nonstatic_oop_space_count = 0; | |
| 3406 int nonstatic_word_space_count = 0; | |
| 3407 int nonstatic_short_space_count = 0; | |
| 3408 int nonstatic_byte_space_count = 0; | |
| 3409 int nonstatic_oop_space_offset; | |
| 3410 int nonstatic_word_space_offset; | |
| 3411 int nonstatic_short_space_offset; | |
| 3412 int nonstatic_byte_space_offset; | |
| 3413 | |
|
165
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diff
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|
3414 if( nonstatic_double_count > 0 ) { |
|
437d03ea40b1
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|
3415 int offset = next_nonstatic_double_offset; |
| 0 | 3416 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
| 3417 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
| 3418 // Allocate available fields into the gap before double field. | |
| 3419 int length = next_nonstatic_double_offset - offset; | |
| 3420 assert(length == BytesPerInt, ""); | |
| 3421 nonstatic_word_space_offset = offset; | |
| 3422 if( nonstatic_word_count > 0 ) { | |
| 3423 nonstatic_word_count -= 1; | |
| 3424 nonstatic_word_space_count = 1; // Only one will fit | |
| 3425 length -= BytesPerInt; | |
| 3426 offset += BytesPerInt; | |
| 3427 } | |
| 3428 nonstatic_short_space_offset = offset; | |
| 3429 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
| 3430 nonstatic_short_count -= 1; | |
| 3431 nonstatic_short_space_count += 1; | |
| 3432 length -= BytesPerShort; | |
| 3433 offset += BytesPerShort; | |
| 3434 } | |
| 3435 nonstatic_byte_space_offset = offset; | |
| 3436 while( length > 0 && nonstatic_byte_count > 0 ) { | |
| 3437 nonstatic_byte_count -= 1; | |
| 3438 nonstatic_byte_space_count += 1; | |
| 3439 length -= 1; | |
| 3440 } | |
| 3441 // Allocate oop field in the gap if there are no other fields for that. | |
| 3442 nonstatic_oop_space_offset = offset; | |
|
165
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diff
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|
3443 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
| 0 | 3444 allocation_style != 0 ) { // when oop fields not first |
| 3445 nonstatic_oop_count -= 1; | |
| 3446 nonstatic_oop_space_count = 1; // Only one will fit | |
|
113
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92
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|
3447 length -= heapOopSize; |
|
ba764ed4b6f2
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92
diff
changeset
|
3448 offset += heapOopSize; |
| 0 | 3449 } |
| 3450 } | |
| 3451 } | |
| 3452 | |
| 3453 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
| 3454 (nonstatic_double_count * BytesPerLong); | |
| 3455 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
| 3456 (nonstatic_word_count * BytesPerInt); | |
| 3457 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
| 3458 (nonstatic_short_count * BytesPerShort); | |
| 3459 | |
| 3460 int notaligned_offset; | |
| 3461 if( allocation_style == 0 ) { | |
| 3462 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
| 3463 } else { // allocation_style == 1 | |
| 3464 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
| 3465 if( nonstatic_oop_count > 0 ) { | |
|
113
ba764ed4b6f2
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coleenp
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92
diff
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|
3466 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
| 0 | 3467 } |
|
113
ba764ed4b6f2
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diff
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|
3468 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
| 0 | 3469 } |
|
165
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kvn
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diff
changeset
|
3470 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
| 0 | 3471 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
|
165
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diff
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|
3472 - first_nonstatic_field_offset)/heapOopSize); |
| 0 | 3473 |
| 3474 // Iterate over fields again and compute correct offsets. | |
| 3475 // The field allocation type was temporarily stored in the offset slot. | |
| 3476 // oop fields are located before non-oop fields (static and non-static). | |
| 3938 | 3477 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
| 0 | 3478 int real_offset; |
| 3938 | 3479 FieldAllocationType atype = (FieldAllocationType) fs.offset(); |
| 0 | 3480 switch (atype) { |
| 3481 case STATIC_OOP: | |
| 3482 real_offset = next_static_oop_offset; | |
|
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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92
diff
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|
3483 next_static_oop_offset += heapOopSize; |
| 0 | 3484 break; |
| 3485 case STATIC_BYTE: | |
| 3486 real_offset = next_static_byte_offset; | |
| 3487 next_static_byte_offset += 1; | |
| 3488 break; | |
| 3489 case STATIC_SHORT: | |
| 3490 real_offset = next_static_short_offset; | |
| 3491 next_static_short_offset += BytesPerShort; | |
| 3492 break; | |
| 3493 case STATIC_WORD: | |
| 3494 real_offset = next_static_word_offset; | |
| 3495 next_static_word_offset += BytesPerInt; | |
| 3496 break; | |
| 3497 case STATIC_DOUBLE: | |
| 3498 real_offset = next_static_double_offset; | |
| 3499 next_static_double_offset += BytesPerLong; | |
| 3500 break; | |
| 3501 case NONSTATIC_OOP: | |
| 3502 if( nonstatic_oop_space_count > 0 ) { | |
| 3503 real_offset = nonstatic_oop_space_offset; | |
|
113
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92
diff
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|
3504 nonstatic_oop_space_offset += heapOopSize; |
| 0 | 3505 nonstatic_oop_space_count -= 1; |
| 3506 } else { | |
| 3507 real_offset = next_nonstatic_oop_offset; | |
|
113
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92
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|
3508 next_nonstatic_oop_offset += heapOopSize; |
| 0 | 3509 } |
| 3510 // Update oop maps | |
| 3511 if( nonstatic_oop_map_count > 0 && | |
| 3512 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
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|
3513 real_offset - |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
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938
diff
changeset
|
3514 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3515 heapOopSize ) { |
| 0 | 3516 // Extend current oop map |
| 938 | 3517 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
| 0 | 3518 } else { |
| 3519 // Create new oop map | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3520 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
| 938 | 3521 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
| 0 | 3522 nonstatic_oop_map_count += 1; |
| 3523 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
| 3524 first_nonstatic_oop_offset = real_offset; | |
| 3525 } | |
| 3526 } | |
| 3527 break; | |
| 3528 case NONSTATIC_BYTE: | |
| 3529 if( nonstatic_byte_space_count > 0 ) { | |
| 3530 real_offset = nonstatic_byte_space_offset; | |
| 3531 nonstatic_byte_space_offset += 1; | |
| 3532 nonstatic_byte_space_count -= 1; | |
| 3533 } else { | |
| 3534 real_offset = next_nonstatic_byte_offset; | |
| 3535 next_nonstatic_byte_offset += 1; | |
| 3536 } | |
| 3537 break; | |
| 3538 case NONSTATIC_SHORT: | |
| 3539 if( nonstatic_short_space_count > 0 ) { | |
| 3540 real_offset = nonstatic_short_space_offset; | |
| 3541 nonstatic_short_space_offset += BytesPerShort; | |
| 3542 nonstatic_short_space_count -= 1; | |
| 3543 } else { | |
| 3544 real_offset = next_nonstatic_short_offset; | |
| 3545 next_nonstatic_short_offset += BytesPerShort; | |
| 3546 } | |
| 3547 break; | |
| 3548 case NONSTATIC_WORD: | |
| 3549 if( nonstatic_word_space_count > 0 ) { | |
| 3550 real_offset = nonstatic_word_space_offset; | |
| 3551 nonstatic_word_space_offset += BytesPerInt; | |
| 3552 nonstatic_word_space_count -= 1; | |
| 3553 } else { | |
| 3554 real_offset = next_nonstatic_word_offset; | |
| 3555 next_nonstatic_word_offset += BytesPerInt; | |
| 3556 } | |
| 3557 break; | |
| 3558 case NONSTATIC_DOUBLE: | |
| 3559 real_offset = next_nonstatic_double_offset; | |
| 3560 next_nonstatic_double_offset += BytesPerLong; | |
| 3561 break; | |
| 3562 default: | |
| 3563 ShouldNotReachHere(); | |
| 3564 } | |
| 3938 | 3565 fs.set_offset(real_offset); |
| 0 | 3566 } |
| 3567 | |
| 3568 // Size of instances | |
| 3569 int instance_size; | |
| 3570 | |
|
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|
3571 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
| 0 | 3572 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
| 3573 | |
|
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|
3574 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 | 3575 |
| 938 | 3576 // Number of non-static oop map blocks allocated at end of klass. |
|
939
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6845368: large objects cause a crash or unexpected exception
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938
diff
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|
3577 const unsigned int total_oop_map_count = |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
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938
diff
changeset
|
3578 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
|
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938
diff
changeset
|
3579 first_nonstatic_oop_offset); |
| 0 | 3580 |
| 3581 // Compute reference type | |
| 3582 ReferenceType rt; | |
| 3583 if (super_klass() == NULL) { | |
| 3584 rt = REF_NONE; | |
| 3585 } else { | |
| 3586 rt = super_klass->reference_type(); | |
| 3587 } | |
| 3588 | |
|
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6266
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changeset
|
3589 // We can now create the basic Klass* for this klass |
|
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6266
diff
changeset
|
3590 int total_oop_map_size2 = |
|
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diff
changeset
|
3591 InstanceKlass::nonstatic_oop_map_size(total_oop_map_count); |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
3592 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3593 Klass* ik = InstanceKlass::allocate_instance_klass(loader_data, |
|
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3594 vtable_size, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6266
diff
changeset
|
3595 itable_size, |
|
939
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6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3596 static_field_size, |
|
6725
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|
3597 total_oop_map_size2, |
|
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|
3598 rt, |
|
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
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diff
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|
3599 access_flags, |
|
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3600 name, |
|
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|
3601 super_klass(), |
|
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|
3602 host_klass, |
|
6038
8bafad97cd26
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
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6000
diff
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|
3603 CHECK_(nullHandle)); |
|
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|
3604 |
|
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|
3605 // Add all classes to our internal class loader list here, |
|
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3606 // including classes in the bootstrap (NULL) class loader. |
|
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|
3607 loader_data->add_class(ik); |
|
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|
3608 |
| 0 | 3609 instanceKlassHandle this_klass (THREAD, ik); |
| 3610 | |
| 938 | 3611 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
| 3612 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
| 3613 "sanity"); | |
| 0 | 3614 |
| 3615 // Fill in information already parsed | |
| 975 | 3616 this_klass->set_should_verify_class(verify); |
| 0 | 3617 jint lh = Klass::instance_layout_helper(instance_size, false); |
| 3618 this_klass->set_layout_helper(lh); | |
| 3619 assert(this_klass->oop_is_instance(), "layout is correct"); | |
| 3620 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
| 3621 // Not yet: supers are done below to support the new subtype-checking fields | |
| 3622 //this_klass->set_super(super_klass()); | |
|
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3623 this_klass->set_class_loader_data(loader_data); |
| 0 | 3624 this_klass->set_nonstatic_field_size(nonstatic_field_size); |
| 975 | 3625 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
| 3938 | 3626 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
| 0 | 3627 cp->set_pool_holder(this_klass()); |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2085
diff
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|
3628 error_handler.set_in_error(false); // turn off error handler for cp |
| 0 | 3629 this_klass->set_constants(cp()); |
|
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3630 this_klass->set_local_interfaces(local_interfaces); |
|
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3631 this_klass->set_fields(fields, java_fields_count); |
|
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|
3632 this_klass->set_methods(methods); |
| 0 | 3633 if (has_final_method) { |
| 3634 this_klass->set_has_final_method(); | |
| 3635 } | |
|
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3636 this_klass->set_method_ordering(method_ordering); |
|
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3637 // The InstanceKlass::_methods_jmethod_ids cache and the |
|
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|
3638 // InstanceKlass::_methods_cached_itable_indices cache are |
|
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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|
3639 // both managed on the assumption that the initial cache |
|
74a5db69c1fe
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|
3640 // size is equal to the number of methods in the class. If |
|
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3641 // that changes, then InstanceKlass::idnum_can_increment() |
|
977
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|
3642 // has to be changed accordingly. |
| 0 | 3643 this_klass->set_initial_method_idnum(methods->length()); |
| 3644 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
| 710 | 3645 if (LinkWellKnownClasses || is_anonymous()) // I am well known to myself |
|
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
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431
diff
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|
3646 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
|
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3647 |
|
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|
3648 if (fields_annotations != NULL || |
|
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|
3649 methods_annotations != NULL || |
|
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3650 methods_parameter_annotations != NULL || |
|
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|
3651 methods_default_annotations != NULL) { |
|
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|
3652 // Allocate an annotation type if needed. |
|
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|
3653 Annotations* anno = Annotations::allocate(loader_data, |
|
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|
3654 fields_annotations, methods_annotations, |
|
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|
3655 methods_parameter_annotations, |
|
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|
3656 methods_default_annotations, CHECK_(nullHandle)); |
|
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|
3657 this_klass->set_annotations(anno); |
|
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|
3658 } else { |
|
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|
3659 this_klass->set_annotations(NULL); |
|
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|
3660 } |
|
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|
3661 |
| 0 | 3662 |
| 3663 this_klass->set_minor_version(minor_version); | |
| 3664 this_klass->set_major_version(major_version); | |
| 3665 | |
|
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|
3666 // 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
jrose
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diff
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|
3667 // (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
parents:
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diff
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|
3668 // which is eagerly done for every method, so we might as well do it now, |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
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diff
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|
3669 // when everything is fresh in memory.) |
|
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|
3670 if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
|
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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|
3671 for (int j = 0; j < methods->length(); j++) { |
|
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|
3672 methods->at(j)->init_intrinsic_id(); |
|
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
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|
3673 } |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
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parents:
710
diff
changeset
|
3674 } |
|
75596850f863
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diff
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|
3675 |
| 0 | 3676 if (cached_class_file_bytes != NULL) { |
|
6725
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|
3677 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
| 0 | 3678 this_klass->set_cached_class_file(cached_class_file_bytes, |
| 3679 cached_class_file_length); | |
| 3680 } | |
| 3681 | |
| 3682 // Miranda methods | |
| 3683 if ((num_miranda_methods > 0) || | |
| 3684 // if this class introduced new miranda methods or | |
| 3685 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
| 3686 // super class exists and this class inherited miranda methods | |
| 3687 ) { | |
| 3688 this_klass->set_has_miranda_methods(); // then set a flag | |
| 3689 } | |
| 3690 | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3691 // Fill in field values obtained by parse_classfile_attributes |
|
6725
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|
3692 if (parsed_annotations.has_any_annotations()) { |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
3693 parsed_annotations.apply_to(this_klass); |
|
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|
3694 } |
|
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|
3695 // Create annotations |
|
da91efe96a93
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|
3696 if (_annotations != NULL && this_klass->annotations() == NULL) { |
|
da91efe96a93
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|
3697 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
|
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|
3698 this_klass->set_annotations(anno); |
|
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|
3699 } |
|
6222
6d8f36bcef55
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jrose
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6100
diff
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|
3700 apply_parsed_class_attributes(this_klass); |
| 0 | 3701 |
| 3702 // Compute transitive closure of interfaces this class implements | |
|
6725
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|
3703 this_klass->set_transitive_interfaces(transitive_interfaces); |
| 0 | 3704 |
| 3705 // Fill in information needed to compute superclasses. | |
| 3706 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
| 3707 | |
| 3708 // Initialize itable offset tables | |
| 3709 klassItable::setup_itable_offset_table(this_klass); | |
| 3710 | |
| 3711 // Do final class setup | |
| 938 | 3712 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
| 0 | 3713 |
|
6222
6d8f36bcef55
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jrose
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diff
changeset
|
3714 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
| 0 | 3715 set_precomputed_flags(this_klass); |
| 3716 | |
| 3717 // reinitialize modifiers, using the InnerClasses attribute | |
| 3718 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
| 3719 this_klass->set_modifier_flags(computed_modifiers); | |
| 3720 | |
| 3721 // check if this class can access its super class | |
| 3722 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
| 3723 | |
| 3724 // check if this class can access its superinterfaces | |
| 3725 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
| 3726 | |
| 3727 // check if this class overrides any final method | |
| 3728 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
| 3729 | |
| 3730 // check that if this class is an interface then it doesn't have static methods | |
| 3731 if (this_klass->is_interface()) { | |
| 3732 check_illegal_static_method(this_klass, CHECK_(nullHandle)); | |
| 3733 } | |
| 3734 | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3735 // Allocate mirror and initialize static fields |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3736 java_lang_Class::create_mirror(this_klass, CHECK_(nullHandle)); |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
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|
3737 |
|
6725
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|
3738 // Allocate a simple java object for locking during class initialization. |
|
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|
3739 // This needs to be a java object because it can be held across a java call. |
|
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|
3740 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_NULL); |
|
da91efe96a93
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|
3741 this_klass->set_init_lock(r); |
|
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|
3742 |
|
da91efe96a93
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|
3743 // TODO: Move these oops to the mirror |
|
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|
3744 this_klass->set_protection_domain(protection_domain()); |
|
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|
3745 |
|
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changeset
|
3746 // Update the loader_data graph. |
|
da91efe96a93
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|
3747 record_defined_class_dependencies(this_klass, CHECK_NULL); |
|
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|
3748 |
|
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|
3749 ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
| 0 | 3750 false /* not shared class */); |
| 3751 | |
| 3752 if (TraceClassLoading) { | |
| 3753 // print in a single call to reduce interleaving of output | |
| 3754 if (cfs->source() != NULL) { | |
| 3755 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
| 3756 cfs->source()); | |
| 3757 } else if (class_loader.is_null()) { | |
| 3758 if (THREAD->is_Java_thread()) { | |
|
6725
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|
3759 Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
| 0 | 3760 tty->print("[Loaded %s by instance of %s]\n", |
| 3761 this_klass->external_name(), | |
|
6725
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|
3762 InstanceKlass::cast(caller)->external_name()); |
| 0 | 3763 } else { |
| 3764 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
| 3765 } | |
| 3766 } else { | |
| 3767 ResourceMark rm; | |
| 3768 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
|
6725
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|
3769 InstanceKlass::cast(class_loader->klass())->external_name()); |
| 0 | 3770 } |
| 3771 } | |
| 3772 | |
| 3773 if (TraceClassResolution) { | |
| 3774 // print out the superclass. | |
| 3775 const char * from = Klass::cast(this_klass())->external_name(); | |
| 3776 if (this_klass->java_super() != NULL) { | |
|
6725
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|
3777 tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
| 0 | 3778 } |
| 3779 // print out each of the interface classes referred to by this class. | |
|
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|
3780 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
|
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|
3781 if (local_interfaces != NULL) { |
| 0 | 3782 int length = local_interfaces->length(); |
| 3783 for (int i = 0; i < length; i++) { | |
|
6725
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|
3784 Klass* k = local_interfaces->at(i); |
|
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|
3785 InstanceKlass* to_class = InstanceKlass::cast(k); |
| 0 | 3786 const char * to = to_class->external_name(); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3787 tty->print("RESOLVE %s %s (interface)\n", from, to); |
| 0 | 3788 } |
| 3789 } | |
| 3790 } | |
| 3791 | |
| 3792 #ifndef PRODUCT | |
| 3793 if( PrintCompactFieldsSavings ) { | |
| 3794 if( nonstatic_field_size < orig_nonstatic_field_size ) { | |
|
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3795 tty->print("[Saved %d of %d bytes in %s]\n", |
|
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3796 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
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3797 orig_nonstatic_field_size*heapOopSize, |
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3798 this_klass->external_name()); |
| 0 | 3799 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
|
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3800 tty->print("[Wasted %d over %d bytes in %s]\n", |
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3801 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
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3802 orig_nonstatic_field_size*heapOopSize, |
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3803 this_klass->external_name()); |
| 0 | 3804 } |
| 3805 } | |
| 3806 #endif | |
| 3807 | |
| 3808 // preserve result across HandleMark | |
| 3809 preserve_this_klass = this_klass(); | |
| 3810 } | |
| 3811 | |
|
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3812 // Create new handle outside HandleMark (might be needed for |
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3813 // Extended Class Redefinition) |
| 0 | 3814 instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
|
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3815 debug_only(this_klass->verify();) |
| 0 | 3816 |
| 3817 return this_klass; | |
| 3818 } | |
| 3819 | |
| 3820 | |
|
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3821 unsigned int |
|
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3822 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
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3823 unsigned int nonstatic_oop_map_count, |
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3824 int first_nonstatic_oop_offset) { |
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3825 unsigned int map_count = |
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3826 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
| 0 | 3827 if (nonstatic_oop_map_count > 0) { |
| 3828 // We have oops to add to map | |
| 938 | 3829 if (map_count == 0) { |
| 3830 map_count = nonstatic_oop_map_count; | |
| 0 | 3831 } else { |
| 938 | 3832 // Check whether we should add a new map block or whether the last one can |
| 3833 // be extended | |
| 3834 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
| 3835 OopMapBlock* const last_map = first_map + map_count - 1; | |
| 3836 | |
| 3837 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
| 0 | 3838 if (next_offset == first_nonstatic_oop_offset) { |
| 3839 // There is no gap bettwen superklass's last oop field and first | |
| 3840 // local oop field, merge maps. | |
| 3841 nonstatic_oop_map_count -= 1; | |
| 3842 } else { | |
| 3843 // Superklass didn't end with a oop field, add extra maps | |
| 938 | 3844 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
| 0 | 3845 } |
| 938 | 3846 map_count += nonstatic_oop_map_count; |
| 0 | 3847 } |
| 3848 } | |
| 938 | 3849 return map_count; |
| 0 | 3850 } |
| 3851 | |
| 3852 | |
| 3853 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
|
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3854 unsigned int nonstatic_oop_map_count, |
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3855 int* nonstatic_oop_offsets, |
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3856 unsigned int* nonstatic_oop_counts) { |
| 0 | 3857 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
|
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3858 const InstanceKlass* const super = k->superklass(); |
|
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3859 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
| 938 | 3860 if (super_count > 0) { |
| 3861 // Copy maps from superklass | |
| 0 | 3862 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
|
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3863 for (unsigned int i = 0; i < super_count; ++i) { |
| 0 | 3864 *this_oop_map++ = *super_oop_map++; |
| 3865 } | |
| 3866 } | |
| 938 | 3867 |
| 0 | 3868 if (nonstatic_oop_map_count > 0) { |
| 938 | 3869 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
| 3870 // The counts differ because there is no gap between superklass's last oop | |
| 3871 // field and the first local oop field. Extend the last oop map copied | |
| 0 | 3872 // from the superklass instead of creating new one. |
| 3873 nonstatic_oop_map_count--; | |
| 3874 nonstatic_oop_offsets++; | |
| 3875 this_oop_map--; | |
| 938 | 3876 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
| 0 | 3877 this_oop_map++; |
| 3878 } | |
| 938 | 3879 |
| 0 | 3880 // Add new map blocks, fill them |
| 3881 while (nonstatic_oop_map_count-- > 0) { | |
| 3882 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
| 938 | 3883 this_oop_map->set_count(*nonstatic_oop_counts++); |
| 0 | 3884 this_oop_map++; |
| 3885 } | |
| 938 | 3886 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
| 3887 this_oop_map, "sanity"); | |
| 0 | 3888 } |
| 3889 } | |
| 3890 | |
| 3891 | |
| 3892 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
|
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3893 Klass* super = k->super(); |
| 0 | 3894 |
| 3895 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
| 3896 // in which case we don't have to register objects as finalizable | |
| 3897 if (!_has_empty_finalizer) { | |
| 3898 if (_has_finalizer || | |
|
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3899 (super != NULL && super->has_finalizer())) { |
| 0 | 3900 k->set_has_finalizer(); |
| 3901 } | |
| 3902 } | |
| 3903 | |
| 3904 #ifdef ASSERT | |
| 3905 bool f = false; | |
|
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3906 Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
| 0 | 3907 vmSymbols::void_method_signature()); |
| 3908 if (m != NULL && !m->is_empty_method()) { | |
| 3909 f = true; | |
| 3910 } | |
| 3911 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
| 3912 #endif | |
| 3913 | |
| 3914 // Check if this klass supports the java.lang.Cloneable interface | |
| 1142 | 3915 if (SystemDictionary::Cloneable_klass_loaded()) { |
| 3916 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
| 0 | 3917 k->set_is_cloneable(); |
| 3918 } | |
| 3919 } | |
| 3920 | |
| 3921 // Check if this klass has a vanilla default constructor | |
| 3922 if (super == NULL) { | |
| 3923 // java.lang.Object has empty default constructor | |
| 3924 k->set_has_vanilla_constructor(); | |
| 3925 } else { | |
| 3926 if (Klass::cast(super)->has_vanilla_constructor() && | |
| 3927 _has_vanilla_constructor) { | |
| 3928 k->set_has_vanilla_constructor(); | |
| 3929 } | |
| 3930 #ifdef ASSERT | |
| 3931 bool v = false; | |
| 3932 if (Klass::cast(super)->has_vanilla_constructor()) { | |
|
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3933 Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
| 0 | 3934 ), vmSymbols::void_method_signature()); |
| 3935 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
| 3936 v = true; | |
| 3937 } | |
| 3938 } | |
| 3939 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
| 3940 #endif | |
| 3941 } | |
| 3942 | |
| 3943 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
|
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3944 // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
| 0 | 3945 assert(k->size_helper() > 0, "layout_helper is initialized"); |
| 3946 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
| 3947 || k->is_abstract() || k->is_interface() | |
| 3948 || (k->name() == vmSymbols::java_lang_Class() | |
|
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3949 && k->class_loader_data()->is_the_null_class_loader_data()) |
| 0 | 3950 || k->size_helper() >= FastAllocateSizeLimit) { |
| 3951 // Forbid fast-path allocation. | |
| 3952 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
| 3953 k->set_layout_helper(lh); | |
| 3954 } | |
| 3955 } | |
| 3956 | |
|
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3957 // Attach super classes and interface classes to class loader data |
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3958 void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
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3959 ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
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3960 if (defining_loader_data->is_the_null_class_loader_data()) { |
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3961 // Dependencies to null class loader data are implicit. |
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3962 return; |
|
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3963 } else { |
|
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3964 // add super class dependency |
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3965 Klass* super = defined_klass->super(); |
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3966 if (super != NULL) { |
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3967 defining_loader_data->record_dependency(super, CHECK); |
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3968 } |
|
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3969 |
|
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3970 // add super interface dependencies |
|
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3971 Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
|
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3972 if (local_interfaces != NULL) { |
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3973 int length = local_interfaces->length(); |
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3974 for (int i = 0; i < length; i++) { |
|
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3975 defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
| 0 | 3976 } |
| 3977 } | |
| 3978 } | |
| 3979 } | |
| 3980 | |
|
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3981 // utility method for appending and array with check for duplicates |
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3982 |
|
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3983 void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
|
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3984 // iterate over new interfaces |
|
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3985 for (int i = 0; i < ifs->length(); i++) { |
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3986 Klass* e = ifs->at(i); |
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3987 assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
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3988 // add new interface |
|
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3989 result->append_if_missing(e); |
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3990 } |
|
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3991 } |
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3992 |
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3993 |
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3994 Array<Klass*>* ClassFileParser::compute_transitive_interfaces(ClassLoaderData* loader_data, instanceKlassHandle super, Array<Klass*>* local_ifs, TRAPS) { |
| 0 | 3995 // Compute maximum size for transitive interfaces |
| 3996 int max_transitive_size = 0; | |
| 3997 int super_size = 0; | |
| 3998 // Add superclass transitive interfaces size | |
| 3999 if (super.not_null()) { | |
| 4000 super_size = super->transitive_interfaces()->length(); | |
| 4001 max_transitive_size += super_size; | |
| 4002 } | |
| 4003 // Add local interfaces' super interfaces | |
| 4004 int local_size = local_ifs->length(); | |
| 4005 for (int i = 0; i < local_size; i++) { | |
|
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4006 Klass* l = local_ifs->at(i); |
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4007 max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
| 0 | 4008 } |
| 4009 // Finally add local interfaces | |
| 4010 max_transitive_size += local_size; | |
| 4011 // Construct array | |
| 4012 if (max_transitive_size == 0) { | |
| 4013 // no interfaces, use canonicalized array | |
|
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4014 return Universe::the_empty_klass_array(); |
| 0 | 4015 } else if (max_transitive_size == super_size) { |
| 4016 // no new local interfaces added, share superklass' transitive interface array | |
|
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4017 return super->transitive_interfaces(); |
| 0 | 4018 } else if (max_transitive_size == local_size) { |
| 4019 // only local interfaces added, share local interface array | |
|
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4020 return local_ifs; |
| 0 | 4021 } else { |
|
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4022 ResourceMark rm; |
|
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4023 GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
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4024 |
| 0 | 4025 // Copy down from superclass |
| 4026 if (super.not_null()) { | |
|
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4027 append_interfaces(result, super->transitive_interfaces()); |
| 0 | 4028 } |
|
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4029 |
| 0 | 4030 // Copy down from local interfaces' superinterfaces |
| 4031 for (int i = 0; i < local_ifs->length(); i++) { | |
|
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4032 Klass* l = local_ifs->at(i); |
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4033 append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
| 0 | 4034 } |
| 4035 // Finally add local interfaces | |
|
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4036 append_interfaces(result, local_ifs); |
|
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4037 |
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4038 // length will be less than the max_transitive_size if duplicates were removed |
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4039 int length = result->length(); |
|
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4040 assert(length <= max_transitive_size, "just checking"); |
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4041 Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(loader_data, length, CHECK_NULL); |
|
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4042 for (int i = 0; i < length; i++) { |
|
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4043 Klass* e = result->at(i); |
| 0 | 4044 assert(e != NULL, "just checking"); |
|
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4045 new_result->at_put(i, e); |
| 0 | 4046 } |
|
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4047 return new_result; |
| 0 | 4048 } |
| 4049 } | |
| 4050 | |
| 4051 | |
| 4052 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
|
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4053 Klass* super = this_klass->super(); |
| 0 | 4054 if ((super != NULL) && |
|
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4055 (!Reflection::verify_class_access(this_klass(), super, false))) { |
| 0 | 4056 ResourceMark rm(THREAD); |
| 4057 Exceptions::fthrow( | |
| 4058 THREAD_AND_LOCATION, | |
|
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4059 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 4060 "class %s cannot access its superclass %s", |
| 4061 this_klass->external_name(), | |
|
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4062 InstanceKlass::cast(super)->external_name() |
| 0 | 4063 ); |
| 4064 return; | |
| 4065 } | |
| 4066 } | |
| 4067 | |
| 4068 | |
| 4069 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
|
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4070 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
| 0 | 4071 int lng = local_interfaces->length(); |
| 4072 for (int i = lng - 1; i >= 0; i--) { | |
|
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4073 Klass* k = local_interfaces->at(i); |
| 0 | 4074 assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface"); |
|
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4075 if (!Reflection::verify_class_access(this_klass(), k, false)) { |
| 0 | 4076 ResourceMark rm(THREAD); |
| 4077 Exceptions::fthrow( | |
| 4078 THREAD_AND_LOCATION, | |
|
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4079 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 4080 "class %s cannot access its superinterface %s", |
| 4081 this_klass->external_name(), | |
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4082 InstanceKlass::cast(k)->external_name() |
| 0 | 4083 ); |
| 4084 return; | |
| 4085 } | |
| 4086 } | |
| 4087 } | |
| 4088 | |
| 4089 | |
| 4090 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
|
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4091 Array<Method*>* methods = this_klass->methods(); |
| 0 | 4092 int num_methods = methods->length(); |
| 4093 | |
| 4094 // go thru each method and check if it overrides a final method | |
| 4095 for (int index = 0; index < num_methods; index++) { | |
|
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4096 Method* m = methods->at(index); |
| 0 | 4097 |
| 4098 // skip private, static and <init> methods | |
| 4099 if ((!m->is_private()) && | |
| 4100 (!m->is_static()) && | |
| 4101 (m->name() != vmSymbols::object_initializer_name())) { | |
| 4102 | |
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4103 Symbol* name = m->name(); |
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4104 Symbol* signature = m->signature(); |
|
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4105 Klass* k = this_klass->super(); |
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4106 Method* super_m = NULL; |
| 0 | 4107 while (k != NULL) { |
| 4108 // skip supers that don't have final methods. | |
|
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4109 if (k->has_final_method()) { |
| 0 | 4110 // lookup a matching method in the super class hierarchy |
|
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4111 super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
| 0 | 4112 if (super_m == NULL) { |
| 4113 break; // didn't find any match; get out | |
| 4114 } | |
| 4115 | |
| 4116 if (super_m->is_final() && | |
| 4117 // matching method in super is final | |
|
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4118 (Reflection::verify_field_access(this_klass(), |
| 0 | 4119 super_m->method_holder(), |
| 4120 super_m->method_holder(), | |
| 4121 super_m->access_flags(), false)) | |
| 4122 // this class can access super final method and therefore override | |
| 4123 ) { | |
| 4124 ResourceMark rm(THREAD); | |
| 4125 Exceptions::fthrow( | |
| 4126 THREAD_AND_LOCATION, | |
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4127 vmSymbols::java_lang_VerifyError(), |
| 0 | 4128 "class %s overrides final method %s.%s", |
| 4129 this_klass->external_name(), | |
| 4130 name->as_C_string(), | |
| 4131 signature->as_C_string() | |
| 4132 ); | |
| 4133 return; | |
| 4134 } | |
| 4135 | |
| 4136 // continue to look from super_m's holder's super. | |
|
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4137 k = InstanceKlass::cast(super_m->method_holder())->super(); |
| 0 | 4138 continue; |
| 4139 } | |
| 4140 | |
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4141 k = k->super(); |
| 0 | 4142 } |
| 4143 } | |
| 4144 } | |
| 4145 } | |
| 4146 | |
| 4147 | |
| 4148 // assumes that this_klass is an interface | |
| 4149 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
| 4150 assert(this_klass->is_interface(), "not an interface"); | |
|
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4151 Array<Method*>* methods = this_klass->methods(); |
| 0 | 4152 int num_methods = methods->length(); |
| 4153 | |
| 4154 for (int index = 0; index < num_methods; index++) { | |
|
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4155 Method* m = methods->at(index); |
| 0 | 4156 // if m is static and not the init method, throw a verify error |
| 4157 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
| 4158 ResourceMark rm(THREAD); | |
| 4159 Exceptions::fthrow( | |
| 4160 THREAD_AND_LOCATION, | |
|
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4161 vmSymbols::java_lang_VerifyError(), |
| 0 | 4162 "Illegal static method %s in interface %s", |
| 4163 m->name()->as_C_string(), | |
| 4164 this_klass->external_name() | |
| 4165 ); | |
| 4166 return; | |
| 4167 } | |
| 4168 } | |
| 4169 } | |
| 4170 | |
| 4171 // utility methods for format checking | |
| 4172 | |
| 4173 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
| 4174 if (!_need_verify) { return; } | |
| 4175 | |
| 4176 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
| 4177 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
| 4178 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4179 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
| 4180 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
| 4181 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
| 4182 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4183 | |
| 4184 if ((is_abstract && is_final) || | |
| 4185 (is_interface && !is_abstract) || | |
| 4186 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
| 4187 (!is_interface && major_gte_15 && is_annotation)) { | |
| 4188 ResourceMark rm(THREAD); | |
| 4189 Exceptions::fthrow( | |
| 4190 THREAD_AND_LOCATION, | |
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4191 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4192 "Illegal class modifiers in class %s: 0x%X", |
| 4193 _class_name->as_C_string(), flags | |
| 4194 ); | |
| 4195 return; | |
| 4196 } | |
| 4197 } | |
| 4198 | |
| 4199 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
| 4200 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4201 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
| 4202 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4203 | |
| 4204 return ((is_public && is_protected) || | |
| 4205 (is_public && is_private) || | |
| 4206 (is_protected && is_private)); | |
| 4207 } | |
| 4208 | |
| 4209 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
|
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4210 u2 max_version = |
|
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4211 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
|
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4212 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
| 0 | 4213 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
|
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4214 (major <= max_version) && |
|
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|
4215 ((major != max_version) || |
| 0 | 4216 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
| 4217 } | |
| 4218 | |
| 4219 void ClassFileParser::verify_legal_field_modifiers( | |
| 4220 jint flags, bool is_interface, TRAPS) { | |
| 4221 if (!_need_verify) { return; } | |
| 4222 | |
| 4223 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4224 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
| 4225 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4226 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
| 4227 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4228 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
| 4229 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
| 4230 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
| 4231 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4232 | |
| 4233 bool is_illegal = false; | |
| 4234 | |
| 4235 if (is_interface) { | |
| 4236 if (!is_public || !is_static || !is_final || is_private || | |
| 4237 is_protected || is_volatile || is_transient || | |
| 4238 (major_gte_15 && is_enum)) { | |
| 4239 is_illegal = true; | |
| 4240 } | |
| 4241 } else { // not interface | |
| 4242 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
| 4243 is_illegal = true; | |
| 4244 } | |
| 4245 } | |
| 4246 | |
| 4247 if (is_illegal) { | |
| 4248 ResourceMark rm(THREAD); | |
| 4249 Exceptions::fthrow( | |
| 4250 THREAD_AND_LOCATION, | |
|
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4251 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4252 "Illegal field modifiers in class %s: 0x%X", |
| 4253 _class_name->as_C_string(), flags); | |
| 4254 return; | |
| 4255 } | |
| 4256 } | |
| 4257 | |
| 4258 void ClassFileParser::verify_legal_method_modifiers( | |
|
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4259 jint flags, bool is_interface, Symbol* name, TRAPS) { |
| 0 | 4260 if (!_need_verify) { return; } |
| 4261 | |
| 4262 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4263 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4264 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
| 4265 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4266 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
| 4267 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
| 4268 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
| 4269 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
| 4270 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
| 4271 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4272 const bool is_initializer = (name == vmSymbols::object_initializer_name()); | |
| 4273 | |
| 4274 bool is_illegal = false; | |
| 4275 | |
| 4276 if (is_interface) { | |
| 4277 if (!is_abstract || !is_public || is_static || is_final || | |
| 4278 is_native || (major_gte_15 && (is_synchronized || is_strict))) { | |
| 4279 is_illegal = true; | |
| 4280 } | |
| 4281 } else { // not interface | |
| 4282 if (is_initializer) { | |
| 4283 if (is_static || is_final || is_synchronized || is_native || | |
| 4284 is_abstract || (major_gte_15 && is_bridge)) { | |
| 4285 is_illegal = true; | |
| 4286 } | |
| 4287 } else { // not initializer | |
| 4288 if (is_abstract) { | |
| 4289 if ((is_final || is_native || is_private || is_static || | |
| 4290 (major_gte_15 && (is_synchronized || is_strict)))) { | |
| 4291 is_illegal = true; | |
| 4292 } | |
| 4293 } | |
| 4294 if (has_illegal_visibility(flags)) { | |
| 4295 is_illegal = true; | |
| 4296 } | |
| 4297 } | |
| 4298 } | |
| 4299 | |
| 4300 if (is_illegal) { | |
| 4301 ResourceMark rm(THREAD); | |
| 4302 Exceptions::fthrow( | |
| 4303 THREAD_AND_LOCATION, | |
|
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4304 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4305 "Method %s in class %s has illegal modifiers: 0x%X", |
| 4306 name->as_C_string(), _class_name->as_C_string(), flags); | |
| 4307 return; | |
| 4308 } | |
| 4309 } | |
| 4310 | |
| 4311 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
| 4312 assert(_need_verify, "only called when _need_verify is true"); | |
| 4313 int i = 0; | |
| 4314 int count = length >> 2; | |
| 4315 for (int k=0; k<count; k++) { | |
| 4316 unsigned char b0 = buffer[i]; | |
| 4317 unsigned char b1 = buffer[i+1]; | |
| 4318 unsigned char b2 = buffer[i+2]; | |
| 4319 unsigned char b3 = buffer[i+3]; | |
| 4320 // For an unsigned char v, | |
| 4321 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
| 4322 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
| 4323 unsigned char res = b0 | b0 - 1 | | |
| 4324 b1 | b1 - 1 | | |
| 4325 b2 | b2 - 1 | | |
| 4326 b3 | b3 - 1; | |
| 4327 if (res >= 128) break; | |
| 4328 i += 4; | |
| 4329 } | |
| 4330 for(; i < length; i++) { | |
| 4331 unsigned short c; | |
| 4332 // no embedded zeros | |
| 4333 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4334 if(buffer[i] < 128) { | |
| 4335 continue; | |
| 4336 } | |
| 4337 if ((i + 5) < length) { // see if it's legal supplementary character | |
| 4338 if (UTF8::is_supplementary_character(&buffer[i])) { | |
| 4339 c = UTF8::get_supplementary_character(&buffer[i]); | |
| 4340 i += 5; | |
| 4341 continue; | |
| 4342 } | |
| 4343 } | |
| 4344 switch (buffer[i] >> 4) { | |
| 4345 default: break; | |
| 4346 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
| 4347 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4348 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
| 4349 c = (buffer[i] & 0x1F) << 6; | |
| 4350 i++; | |
| 4351 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
| 4352 c += buffer[i] & 0x3F; | |
| 4353 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
| 4354 // for classes with major > 47, c must a null or a character in its shortest form | |
| 4355 break; | |
| 4356 } | |
| 4357 } | |
| 4358 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4359 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
| 4360 c = (buffer[i] & 0xF) << 12; | |
| 4361 i += 2; | |
| 4362 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
| 4363 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
| 4364 if (_major_version <= 47 || c >= 0x800) { | |
| 4365 // for classes with major > 47, c must be in its shortest form | |
| 4366 break; | |
| 4367 } | |
| 4368 } | |
| 4369 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4370 } // end of switch | |
| 4371 } // end of for | |
| 4372 } | |
| 4373 | |
| 4374 // Checks if name is a legal class name. | |
|
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4375 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
| 0 | 4376 if (!_need_verify || _relax_verify) { return; } |
| 4377 | |
| 4378 char buf[fixed_buffer_size]; | |
| 4379 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4380 unsigned int length = name->utf8_length(); | |
| 4381 bool legal = false; | |
| 4382 | |
| 4383 if (length > 0) { | |
| 4384 char* p; | |
| 4385 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
| 4386 p = skip_over_field_signature(bytes, false, length, CHECK); | |
| 4387 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4388 } else if (_major_version < JAVA_1_5_VERSION) { | |
| 4389 if (bytes[0] != '<') { | |
| 4390 p = skip_over_field_name(bytes, true, length); | |
| 4391 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4392 } | |
| 4393 } else { | |
| 4394 // 4900761: relax the constraints based on JSR202 spec | |
| 4395 // Class names may be drawn from the entire Unicode character set. | |
| 4396 // Identifiers between '/' must be unqualified names. | |
| 4397 // The utf8 string has been verified when parsing cpool entries. | |
| 4398 legal = verify_unqualified_name(bytes, length, LegalClass); | |
| 4399 } | |
| 4400 } | |
| 4401 if (!legal) { | |
| 4402 ResourceMark rm(THREAD); | |
| 4403 Exceptions::fthrow( | |
| 4404 THREAD_AND_LOCATION, | |
|
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|
4405 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4406 "Illegal class name \"%s\" in class file %s", bytes, |
| 4407 _class_name->as_C_string() | |
| 4408 ); | |
| 4409 return; | |
| 4410 } | |
| 4411 } | |
| 4412 | |
| 4413 // Checks if name is a legal field name. | |
|
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|
4414 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
| 0 | 4415 if (!_need_verify || _relax_verify) { return; } |
| 4416 | |
| 4417 char buf[fixed_buffer_size]; | |
| 4418 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4419 unsigned int length = name->utf8_length(); | |
| 4420 bool legal = false; | |
| 4421 | |
| 4422 if (length > 0) { | |
| 4423 if (_major_version < JAVA_1_5_VERSION) { | |
| 4424 if (bytes[0] != '<') { | |
| 4425 char* p = skip_over_field_name(bytes, false, length); | |
| 4426 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4427 } | |
| 4428 } else { | |
| 4429 // 4881221: relax the constraints based on JSR202 spec | |
| 4430 legal = verify_unqualified_name(bytes, length, LegalField); | |
| 4431 } | |
| 4432 } | |
| 4433 | |
| 4434 if (!legal) { | |
| 4435 ResourceMark rm(THREAD); | |
| 4436 Exceptions::fthrow( | |
| 4437 THREAD_AND_LOCATION, | |
|
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4438 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4439 "Illegal field name \"%s\" in class %s", bytes, |
| 4440 _class_name->as_C_string() | |
| 4441 ); | |
| 4442 return; | |
| 4443 } | |
| 4444 } | |
| 4445 | |
| 4446 // Checks if name is a legal method name. | |
|
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|
4447 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
| 0 | 4448 if (!_need_verify || _relax_verify) { return; } |
| 4449 | |
|
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|
4450 assert(name != NULL, "method name is null"); |
| 0 | 4451 char buf[fixed_buffer_size]; |
| 4452 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4453 unsigned int length = name->utf8_length(); | |
| 4454 bool legal = false; | |
| 4455 | |
| 4456 if (length > 0) { | |
| 4457 if (bytes[0] == '<') { | |
| 4458 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
| 4459 legal = true; | |
| 4460 } | |
| 4461 } else if (_major_version < JAVA_1_5_VERSION) { | |
| 4462 char* p; | |
| 4463 p = skip_over_field_name(bytes, false, length); | |
| 4464 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4465 } else { | |
| 4466 // 4881221: relax the constraints based on JSR202 spec | |
| 4467 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
| 4468 } | |
| 4469 } | |
| 4470 | |
| 4471 if (!legal) { | |
| 4472 ResourceMark rm(THREAD); | |
| 4473 Exceptions::fthrow( | |
| 4474 THREAD_AND_LOCATION, | |
|
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4475 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4476 "Illegal method name \"%s\" in class %s", bytes, |
| 4477 _class_name->as_C_string() | |
| 4478 ); | |
| 4479 return; | |
| 4480 } | |
| 4481 } | |
| 4482 | |
| 4483 | |
| 4484 // Checks if signature is a legal field signature. | |
|
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4485 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 4486 if (!_need_verify) { return; } |
| 4487 | |
| 4488 char buf[fixed_buffer_size]; | |
| 4489 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4490 unsigned int length = signature->utf8_length(); | |
| 4491 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
| 4492 | |
| 4493 if (p == NULL || (p - bytes) != (int)length) { | |
|
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|
4494 throwIllegalSignature("Field", name, signature, CHECK); |
| 0 | 4495 } |
| 4496 } | |
| 4497 | |
| 4498 // Checks if signature is a legal method signature. | |
| 4499 // Returns number of parameters | |
|
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4500 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 4501 if (!_need_verify) { |
| 4502 // make sure caller's args_size will be less than 0 even for non-static | |
| 4503 // method so it will be recomputed in compute_size_of_parameters(). | |
| 4504 return -2; | |
| 4505 } | |
| 4506 | |
| 4507 unsigned int args_size = 0; | |
| 4508 char buf[fixed_buffer_size]; | |
| 4509 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4510 unsigned int length = signature->utf8_length(); | |
| 4511 char* nextp; | |
| 4512 | |
| 4513 // The first character must be a '(' | |
| 4514 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
| 4515 length--; | |
| 4516 // Skip over legal field signatures | |
| 4517 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
| 4518 while ((length > 0) && (nextp != NULL)) { | |
| 4519 args_size++; | |
| 4520 if (p[0] == 'J' || p[0] == 'D') { | |
| 4521 args_size++; | |
| 4522 } | |
| 4523 length -= nextp - p; | |
| 4524 p = nextp; | |
| 4525 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
| 4526 } | |
| 4527 // The first non-signature thing better be a ')' | |
| 4528 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
| 4529 length--; | |
| 4530 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
| 4531 // All internal methods must return void | |
| 4532 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
| 4533 return args_size; | |
| 4534 } | |
| 4535 } else { | |
| 4536 // Now we better just have a return value | |
| 4537 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
| 4538 if (nextp && ((int)length == (nextp - p))) { | |
| 4539 return args_size; | |
| 4540 } | |
| 4541 } | |
| 4542 } | |
| 4543 } | |
| 4544 // Report error | |
|
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|
4545 throwIllegalSignature("Method", name, signature, CHECK_0); |
| 0 | 4546 return 0; |
| 4547 } | |
| 4548 | |
| 4549 | |
|
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4550 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
|
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4551 // Method names also may not contain the characters '<' or '>', unless <init> |
|
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4552 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
|
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|
4553 // method. Because these names have been checked as special cases before |
|
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|
4554 // calling this method in verify_legal_method_name. |
|
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|
4555 bool ClassFileParser::verify_unqualified_name( |
|
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|
4556 char* name, unsigned int length, int type) { |
| 0 | 4557 jchar ch; |
| 4558 | |
| 4559 for (char* p = name; p != name + length; ) { | |
| 4560 ch = *p; | |
| 4561 if (ch < 128) { | |
| 4562 p++; | |
|
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|
4563 if (ch == '.' || ch == ';' || ch == '[' ) { |
|
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diff
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|
4564 return false; // do not permit '.', ';', or '[' |
| 0 | 4565 } |
| 4566 if (type != LegalClass && ch == '/') { | |
| 4567 return false; // do not permit '/' unless it's class name | |
| 4568 } | |
| 4569 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
| 4570 return false; // do not permit '<' or '>' in method names | |
| 4571 } | |
| 4572 } else { | |
| 4573 char* tmp_p = UTF8::next(p, &ch); | |
| 4574 p = tmp_p; | |
| 4575 } | |
| 4576 } | |
| 4577 return true; | |
| 4578 } | |
| 4579 | |
| 4580 | |
| 4581 // Take pointer to a string. Skip over the longest part of the string that could | |
| 4582 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
| 4583 // Return a pointer to just past the fieldname. | |
| 4584 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
| 4585 // being true, we saw consecutive slashes (meaning we were looking for a | |
| 4586 // qualified path but found something that was badly-formed). | |
| 4587 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
| 4588 char* p; | |
| 4589 jchar ch; | |
| 4590 jboolean last_is_slash = false; | |
| 4591 jboolean not_first_ch = false; | |
| 4592 | |
| 4593 for (p = name; p != name + length; not_first_ch = true) { | |
| 4594 char* old_p = p; | |
| 4595 ch = *p; | |
| 4596 if (ch < 128) { | |
| 4597 p++; | |
| 4598 // quick check for ascii | |
| 4599 if ((ch >= 'a' && ch <= 'z') || | |
| 4600 (ch >= 'A' && ch <= 'Z') || | |
| 4601 (ch == '_' || ch == '$') || | |
| 4602 (not_first_ch && ch >= '0' && ch <= '9')) { | |
| 4603 last_is_slash = false; | |
| 4604 continue; | |
| 4605 } | |
| 4606 if (slash_ok && ch == '/') { | |
| 4607 if (last_is_slash) { | |
| 4608 return NULL; // Don't permit consecutive slashes | |
| 4609 } | |
| 4610 last_is_slash = true; | |
| 4611 continue; | |
| 4612 } | |
| 4613 } else { | |
| 4614 jint unicode_ch; | |
| 4615 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
| 4616 p = tmp_p; | |
| 4617 last_is_slash = false; | |
| 4618 // Check if ch is Java identifier start or is Java identifier part | |
| 4619 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
| 4620 EXCEPTION_MARK; | |
| 1142 | 4621 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
| 0 | 4622 |
| 4623 // return value | |
| 4624 JavaValue result(T_BOOLEAN); | |
| 4625 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
| 4626 JavaCallArguments args; | |
| 4627 args.push_int(unicode_ch); | |
| 4628 | |
| 4629 // public static boolean isJavaIdentifierStart(char ch); | |
| 4630 JavaCalls::call_static(&result, | |
| 4631 klass, | |
|
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|
4632 vmSymbols::isJavaIdentifierStart_name(), |
|
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|
4633 vmSymbols::int_bool_signature(), |
| 0 | 4634 &args, |
| 4635 THREAD); | |
| 4636 | |
| 4637 if (HAS_PENDING_EXCEPTION) { | |
| 4638 CLEAR_PENDING_EXCEPTION; | |
| 4639 return 0; | |
| 4640 } | |
| 4641 if (result.get_jboolean()) { | |
| 4642 continue; | |
| 4643 } | |
| 4644 | |
| 4645 if (not_first_ch) { | |
| 4646 // public static boolean isJavaIdentifierPart(char ch); | |
| 4647 JavaCalls::call_static(&result, | |
| 4648 klass, | |
|
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|
4649 vmSymbols::isJavaIdentifierPart_name(), |
|
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diff
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|
4650 vmSymbols::int_bool_signature(), |
| 0 | 4651 &args, |
| 4652 THREAD); | |
| 4653 | |
| 4654 if (HAS_PENDING_EXCEPTION) { | |
| 4655 CLEAR_PENDING_EXCEPTION; | |
| 4656 return 0; | |
| 4657 } | |
| 4658 | |
| 4659 if (result.get_jboolean()) { | |
| 4660 continue; | |
| 4661 } | |
| 4662 } | |
| 4663 } | |
| 4664 return (not_first_ch) ? old_p : NULL; | |
| 4665 } | |
| 4666 return (not_first_ch) ? p : NULL; | |
| 4667 } | |
| 4668 | |
| 4669 | |
| 4670 // Take pointer to a string. Skip over the longest part of the string that could | |
| 4671 // be taken as a field signature. Allow "void" if void_ok. | |
| 4672 // Return a pointer to just past the signature. | |
| 4673 // Return NULL if no legal signature is found. | |
| 4674 char* ClassFileParser::skip_over_field_signature(char* signature, | |
| 4675 bool void_ok, | |
| 4676 unsigned int length, | |
| 4677 TRAPS) { | |
| 4678 unsigned int array_dim = 0; | |
| 4679 while (length > 0) { | |
| 4680 switch (signature[0]) { | |
| 4681 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
| 4682 case JVM_SIGNATURE_BOOLEAN: | |
| 4683 case JVM_SIGNATURE_BYTE: | |
| 4684 case JVM_SIGNATURE_CHAR: | |
| 4685 case JVM_SIGNATURE_SHORT: | |
| 4686 case JVM_SIGNATURE_INT: | |
| 4687 case JVM_SIGNATURE_FLOAT: | |
| 4688 case JVM_SIGNATURE_LONG: | |
| 4689 case JVM_SIGNATURE_DOUBLE: | |
| 4690 return signature + 1; | |
| 4691 case JVM_SIGNATURE_CLASS: { | |
| 4692 if (_major_version < JAVA_1_5_VERSION) { | |
| 4693 // Skip over the class name if one is there | |
| 4694 char* p = skip_over_field_name(signature + 1, true, --length); | |
| 4695 | |
| 4696 // The next character better be a semicolon | |
| 4697 if (p && (p - signature) > 1 && p[0] == ';') { | |
| 4698 return p + 1; | |
| 4699 } | |
| 4700 } else { | |
| 4701 // 4900761: For class version > 48, any unicode is allowed in class name. | |
| 4702 length--; | |
| 4703 signature++; | |
| 4704 while (length > 0 && signature[0] != ';') { | |
| 4705 if (signature[0] == '.') { | |
| 4706 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
| 4707 } | |
| 4708 length--; | |
| 4709 signature++; | |
| 4710 } | |
| 4711 if (signature[0] == ';') { return signature + 1; } | |
| 4712 } | |
| 4713 | |
| 4714 return NULL; | |
| 4715 } | |
| 4716 case JVM_SIGNATURE_ARRAY: | |
| 4717 array_dim++; | |
| 4718 if (array_dim > 255) { | |
| 4719 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
| 4720 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
| 4721 } | |
| 4722 // The rest of what's there better be a legal signature | |
| 4723 signature++; | |
| 4724 length--; | |
| 4725 void_ok = false; | |
| 4726 break; | |
| 4727 | |
| 4728 default: | |
| 4729 return NULL; | |
| 4730 } | |
| 4731 } | |
| 4732 return NULL; | |
| 4733 } |