Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/classFileParser.cpp @ 6227:dd785aabe02b
Merge
| author | kvn |
|---|---|
| date | Tue, 17 Jul 2012 11:16:13 -0700 |
| parents | 9c9fb30d2b3b e74da3c2b827 |
| children | 1d7922586cf6 |
| 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" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/verificationType.hpp" | |
| 32 #include "classfile/verifier.hpp" | |
| 33 #include "classfile/vmSymbols.hpp" | |
| 34 #include "memory/allocation.hpp" | |
| 35 #include "memory/gcLocker.hpp" | |
| 36 #include "memory/oopFactory.hpp" | |
| 37 #include "memory/universe.inline.hpp" | |
| 38 #include "oops/constantPoolOop.hpp" | |
| 3938 | 39 #include "oops/fieldStreams.hpp" |
| 1972 | 40 #include "oops/instanceKlass.hpp" |
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41 #include "oops/instanceMirrorKlass.hpp" |
| 1972 | 42 #include "oops/klass.inline.hpp" |
| 43 #include "oops/klassOop.hpp" | |
| 44 #include "oops/klassVtable.hpp" | |
| 45 #include "oops/methodOop.hpp" | |
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46 #include "oops/symbol.hpp" |
| 1972 | 47 #include "prims/jvmtiExport.hpp" |
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48 #include "prims/jvmtiThreadState.hpp" |
| 1972 | 49 #include "runtime/javaCalls.hpp" |
| 50 #include "runtime/perfData.hpp" | |
| 51 #include "runtime/reflection.hpp" | |
| 52 #include "runtime/signature.hpp" | |
| 53 #include "runtime/timer.hpp" | |
| 54 #include "services/classLoadingService.hpp" | |
| 55 #include "services/threadService.hpp" | |
| 0 | 56 |
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57 // We generally try to create the oops directly when parsing, rather than |
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58 // allocating temporary data structures and copying the bytes twice. A |
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59 // temporary area is only needed when parsing utf8 entries in the constant |
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60 // pool and when parsing line number tables. |
| 0 | 61 |
| 62 // We add assert in debug mode when class format is not checked. | |
| 63 | |
| 64 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
| 65 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
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66 #define JAVA_MAX_SUPPORTED_VERSION 51 |
| 0 | 67 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
| 68 | |
| 69 // Used for two backward compatibility reasons: | |
| 70 // - to check for new additions to the class file format in JDK1.5 | |
| 71 // - to check for bug fixes in the format checker in JDK1.5 | |
| 72 #define JAVA_1_5_VERSION 49 | |
| 73 | |
| 74 // Used for backward compatibility reasons: | |
| 75 // - to check for javac bug fixes that happened after 1.5 | |
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76 // - also used as the max version when running in jdk6 |
| 0 | 77 #define JAVA_6_VERSION 50 |
| 78 | |
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79 // Used for backward compatibility reasons: |
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80 // - to check NameAndType_info signatures more aggressively |
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81 #define JAVA_7_VERSION 51 |
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82 |
| 0 | 83 |
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84 void ClassFileParser::parse_constant_pool_entries(Handle class_loader, constantPoolHandle cp, int length, TRAPS) { |
| 0 | 85 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
| 86 // this function (_current can be allocated in a register, with scalar | |
| 87 // replacement of aggregates). The _current pointer is copied back to | |
| 88 // stream() when this function returns. DON'T call another method within | |
| 89 // this method that uses stream(). | |
| 90 ClassFileStream* cfs0 = stream(); | |
| 91 ClassFileStream cfs1 = *cfs0; | |
| 92 ClassFileStream* cfs = &cfs1; | |
| 93 #ifdef ASSERT | |
| 1685 | 94 assert(cfs->allocated_on_stack(),"should be local"); |
| 0 | 95 u1* old_current = cfs0->current(); |
| 96 #endif | |
| 97 | |
| 98 // Used for batching symbol allocations. | |
| 99 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
| 100 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
| 101 int indices[SymbolTable::symbol_alloc_batch_size]; | |
| 102 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
| 103 int names_count = 0; | |
| 104 | |
| 105 // parsing Index 0 is unused | |
| 106 for (int index = 1; index < length; index++) { | |
| 107 // Each of the following case guarantees one more byte in the stream | |
| 108 // for the following tag or the access_flags following constant pool, | |
| 109 // so we don't need bounds-check for reading tag. | |
| 110 u1 tag = cfs->get_u1_fast(); | |
| 111 switch (tag) { | |
| 112 case JVM_CONSTANT_Class : | |
| 113 { | |
| 114 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
| 115 u2 name_index = cfs->get_u2_fast(); | |
| 116 cp->klass_index_at_put(index, name_index); | |
| 117 } | |
| 118 break; | |
| 119 case JVM_CONSTANT_Fieldref : | |
| 120 { | |
| 121 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 122 u2 class_index = cfs->get_u2_fast(); | |
| 123 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 124 cp->field_at_put(index, class_index, name_and_type_index); | |
| 125 } | |
| 126 break; | |
| 127 case JVM_CONSTANT_Methodref : | |
| 128 { | |
| 129 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 130 u2 class_index = cfs->get_u2_fast(); | |
| 131 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 132 cp->method_at_put(index, class_index, name_and_type_index); | |
| 133 } | |
| 134 break; | |
| 135 case JVM_CONSTANT_InterfaceMethodref : | |
| 136 { | |
| 137 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
| 138 u2 class_index = cfs->get_u2_fast(); | |
| 139 u2 name_and_type_index = cfs->get_u2_fast(); | |
| 140 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
| 141 } | |
| 142 break; | |
| 143 case JVM_CONSTANT_String : | |
| 144 { | |
| 145 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
| 146 u2 string_index = cfs->get_u2_fast(); | |
| 147 cp->string_index_at_put(index, string_index); | |
| 148 } | |
| 149 break; | |
| 1602 | 150 case JVM_CONSTANT_MethodHandle : |
| 151 case JVM_CONSTANT_MethodType : | |
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152 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
| 1602 | 153 classfile_parse_error( |
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154 "Class file version does not support constant tag %u in class file %s", |
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155 tag, CHECK); |
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156 } |
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157 if (!EnableInvokeDynamic) { |
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158 classfile_parse_error( |
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159 "This JVM does not support constant tag %u in class file %s", |
| 1602 | 160 tag, CHECK); |
| 161 } | |
| 162 if (tag == JVM_CONSTANT_MethodHandle) { | |
| 163 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
| 164 u1 ref_kind = cfs->get_u1_fast(); | |
| 165 u2 method_index = cfs->get_u2_fast(); | |
| 166 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
| 167 } else if (tag == JVM_CONSTANT_MethodType) { | |
| 168 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
| 169 u2 signature_index = cfs->get_u2_fast(); | |
| 170 cp->method_type_index_at_put(index, signature_index); | |
| 171 } else { | |
| 172 ShouldNotReachHere(); | |
| 173 } | |
| 174 break; | |
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175 case JVM_CONSTANT_InvokeDynamic : |
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176 { |
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177 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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178 classfile_parse_error( |
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179 "Class file version does not support constant tag %u in class file %s", |
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180 tag, CHECK); |
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181 } |
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182 if (!EnableInvokeDynamic) { |
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183 classfile_parse_error( |
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184 "This JVM 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 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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188 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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189 u2 name_and_type_index = cfs->get_u2_fast(); |
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190 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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191 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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192 cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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193 } |
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194 break; |
| 0 | 195 case JVM_CONSTANT_Integer : |
| 196 { | |
| 197 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
| 198 u4 bytes = cfs->get_u4_fast(); | |
| 199 cp->int_at_put(index, (jint) bytes); | |
| 200 } | |
| 201 break; | |
| 202 case JVM_CONSTANT_Float : | |
| 203 { | |
| 204 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
| 205 u4 bytes = cfs->get_u4_fast(); | |
| 206 cp->float_at_put(index, *(jfloat*)&bytes); | |
| 207 } | |
| 208 break; | |
| 209 case JVM_CONSTANT_Long : | |
| 210 // A mangled type might cause you to overrun allocated memory | |
| 211 guarantee_property(index+1 < length, | |
| 212 "Invalid constant pool entry %u in class file %s", | |
| 213 index, CHECK); | |
| 214 { | |
| 215 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
| 216 u8 bytes = cfs->get_u8_fast(); | |
| 217 cp->long_at_put(index, bytes); | |
| 218 } | |
| 219 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
| 220 break; | |
| 221 case JVM_CONSTANT_Double : | |
| 222 // A mangled type might cause you to overrun allocated memory | |
| 223 guarantee_property(index+1 < length, | |
| 224 "Invalid constant pool entry %u in class file %s", | |
| 225 index, CHECK); | |
| 226 { | |
| 227 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
| 228 u8 bytes = cfs->get_u8_fast(); | |
| 229 cp->double_at_put(index, *(jdouble*)&bytes); | |
| 230 } | |
| 231 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
| 232 break; | |
| 233 case JVM_CONSTANT_NameAndType : | |
| 234 { | |
| 235 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
| 236 u2 name_index = cfs->get_u2_fast(); | |
| 237 u2 signature_index = cfs->get_u2_fast(); | |
| 238 cp->name_and_type_at_put(index, name_index, signature_index); | |
| 239 } | |
| 240 break; | |
| 241 case JVM_CONSTANT_Utf8 : | |
| 242 { | |
| 243 cfs->guarantee_more(2, CHECK); // utf8_length | |
| 244 u2 utf8_length = cfs->get_u2_fast(); | |
| 245 u1* utf8_buffer = cfs->get_u1_buffer(); | |
| 246 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
| 247 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
| 248 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
| 249 cfs->skip_u1_fast(utf8_length); | |
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250 |
| 0 | 251 // Before storing the symbol, make sure it's legal |
| 252 if (_need_verify) { | |
| 253 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
| 254 } | |
| 255 | |
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256 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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257 Handle patch = clear_cp_patch_at(index); |
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258 guarantee_property(java_lang_String::is_instance(patch()), |
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259 "Illegal utf8 patch at %d in class file %s", |
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260 index, CHECK); |
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261 char* str = java_lang_String::as_utf8_string(patch()); |
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262 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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263 utf8_buffer = (u1*) str; |
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264 utf8_length = (int) strlen(str); |
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265 } |
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266 |
| 0 | 267 unsigned int hash; |
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268 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
| 0 | 269 if (result == NULL) { |
| 270 names[names_count] = (char*)utf8_buffer; | |
| 271 lengths[names_count] = utf8_length; | |
| 272 indices[names_count] = index; | |
| 273 hashValues[names_count++] = hash; | |
| 274 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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275 SymbolTable::new_symbols(class_loader, cp, names_count, names, lengths, indices, hashValues, CHECK); |
| 0 | 276 names_count = 0; |
| 277 } | |
| 278 } else { | |
| 279 cp->symbol_at_put(index, result); | |
| 280 } | |
| 281 } | |
| 282 break; | |
| 283 default: | |
| 284 classfile_parse_error( | |
| 285 "Unknown constant tag %u in class file %s", tag, CHECK); | |
| 286 break; | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 // Allocate the remaining symbols | |
| 291 if (names_count > 0) { | |
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292 SymbolTable::new_symbols(class_loader, cp, names_count, names, lengths, indices, hashValues, CHECK); |
| 0 | 293 } |
| 294 | |
| 295 // Copy _current pointer of local copy back to stream(). | |
| 296 #ifdef ASSERT | |
| 297 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
| 298 #endif | |
| 299 cfs0->set_current(cfs1.current()); | |
| 300 } | |
| 301 | |
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302 // This class unreferences constant pool symbols if an error has occurred |
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303 // while parsing the class before it is assigned into the class. |
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304 // If it gets an error after that it is unloaded and the constant pool will |
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305 // be cleaned up then. |
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306 class ConstantPoolCleaner : public StackObj { |
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307 constantPoolHandle _cphandle; |
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308 bool _in_error; |
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309 public: |
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310 ConstantPoolCleaner(constantPoolHandle cp) : _cphandle(cp), _in_error(true) {} |
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311 ~ConstantPoolCleaner() { |
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312 if (_in_error && _cphandle.not_null()) { |
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313 _cphandle->unreference_symbols(); |
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314 } |
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315 } |
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316 void set_in_error(bool clean) { _in_error = clean; } |
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317 }; |
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318 |
| 0 | 319 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
| 320 | |
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321 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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322 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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323 return cp->symbol_at(index); |
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324 else |
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325 return NULL; |
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326 } |
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327 |
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328 constantPoolHandle ClassFileParser::parse_constant_pool(Handle class_loader, TRAPS) { |
| 0 | 329 ClassFileStream* cfs = stream(); |
| 330 constantPoolHandle nullHandle; | |
| 331 | |
| 332 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
| 333 u2 length = cfs->get_u2_fast(); | |
| 334 guarantee_property( | |
| 335 length >= 1, "Illegal constant pool size %u in class file %s", | |
| 336 length, CHECK_(nullHandle)); | |
| 337 constantPoolOop constant_pool = | |
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338 oopFactory::new_constantPool(length, |
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339 oopDesc::IsSafeConc, |
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340 CHECK_(nullHandle)); |
| 0 | 341 constantPoolHandle cp (THREAD, constant_pool); |
| 342 | |
| 343 cp->set_partially_loaded(); // Enables heap verify to work on partial constantPoolOops | |
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344 ConstantPoolCleaner cp_in_error(cp); // set constant pool to be cleaned up. |
| 0 | 345 |
| 346 // parsing constant pool entries | |
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347 parse_constant_pool_entries(class_loader, cp, length, CHECK_(nullHandle)); |
| 0 | 348 |
| 349 int index = 1; // declared outside of loops for portability | |
| 350 | |
| 351 // first verification pass - validate cross references and fixup class and string constants | |
| 352 for (index = 1; index < length; index++) { // Index 0 is unused | |
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353 jbyte tag = cp->tag_at(index).value(); |
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354 switch (tag) { |
| 0 | 355 case JVM_CONSTANT_Class : |
| 356 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
| 357 break; | |
| 358 case JVM_CONSTANT_Fieldref : | |
| 359 // fall through | |
| 360 case JVM_CONSTANT_Methodref : | |
| 361 // fall through | |
| 362 case JVM_CONSTANT_InterfaceMethodref : { | |
| 363 if (!_need_verify) break; | |
| 364 int klass_ref_index = cp->klass_ref_index_at(index); | |
| 365 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
| 366 check_property(valid_cp_range(klass_ref_index, length) && | |
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367 is_klass_reference(cp, klass_ref_index), |
| 0 | 368 "Invalid constant pool index %u in class file %s", |
| 369 klass_ref_index, | |
| 370 CHECK_(nullHandle)); | |
| 371 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
| 372 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
| 373 "Invalid constant pool index %u in class file %s", | |
| 374 name_and_type_ref_index, | |
| 375 CHECK_(nullHandle)); | |
| 376 break; | |
| 377 } | |
| 378 case JVM_CONSTANT_String : | |
| 379 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
| 380 break; | |
| 381 case JVM_CONSTANT_Integer : | |
| 382 break; | |
| 383 case JVM_CONSTANT_Float : | |
| 384 break; | |
| 385 case JVM_CONSTANT_Long : | |
| 386 case JVM_CONSTANT_Double : | |
| 387 index++; | |
| 388 check_property( | |
| 389 (index < length && cp->tag_at(index).is_invalid()), | |
| 390 "Improper constant pool long/double index %u in class file %s", | |
| 391 index, CHECK_(nullHandle)); | |
| 392 break; | |
| 393 case JVM_CONSTANT_NameAndType : { | |
| 394 if (!_need_verify) break; | |
| 395 int name_ref_index = cp->name_ref_index_at(index); | |
| 396 int signature_ref_index = cp->signature_ref_index_at(index); | |
| 397 check_property( | |
| 398 valid_cp_range(name_ref_index, length) && | |
| 399 cp->tag_at(name_ref_index).is_utf8(), | |
| 400 "Invalid constant pool index %u in class file %s", | |
| 401 name_ref_index, CHECK_(nullHandle)); | |
| 402 check_property( | |
| 403 valid_cp_range(signature_ref_index, length) && | |
| 404 cp->tag_at(signature_ref_index).is_utf8(), | |
| 405 "Invalid constant pool index %u in class file %s", | |
| 406 signature_ref_index, CHECK_(nullHandle)); | |
| 407 break; | |
| 408 } | |
| 409 case JVM_CONSTANT_Utf8 : | |
| 410 break; | |
| 411 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
| 412 case JVM_CONSTANT_UnresolvedClassInError: | |
| 413 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
| 414 break; | |
| 415 case JVM_CONSTANT_ClassIndex : | |
| 416 { | |
| 417 int class_index = cp->klass_index_at(index); | |
| 418 check_property( | |
| 419 valid_cp_range(class_index, length) && | |
| 420 cp->tag_at(class_index).is_utf8(), | |
| 421 "Invalid constant pool index %u in class file %s", | |
| 422 class_index, CHECK_(nullHandle)); | |
| 423 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
| 424 } | |
| 425 break; | |
| 426 case JVM_CONSTANT_UnresolvedString : | |
| 427 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
| 428 break; | |
| 429 case JVM_CONSTANT_StringIndex : | |
| 430 { | |
| 431 int string_index = cp->string_index_at(index); | |
| 432 check_property( | |
| 433 valid_cp_range(string_index, length) && | |
| 434 cp->tag_at(string_index).is_utf8(), | |
| 435 "Invalid constant pool index %u in class file %s", | |
| 436 string_index, CHECK_(nullHandle)); | |
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437 Symbol* sym = cp->symbol_at(string_index); |
| 0 | 438 cp->unresolved_string_at_put(index, sym); |
| 439 } | |
| 440 break; | |
| 1602 | 441 case JVM_CONSTANT_MethodHandle : |
| 442 { | |
| 443 int ref_index = cp->method_handle_index_at(index); | |
| 444 check_property( | |
| 445 valid_cp_range(ref_index, length) && | |
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446 EnableInvokeDynamic, |
| 1602 | 447 "Invalid constant pool index %u in class file %s", |
| 448 ref_index, CHECK_(nullHandle)); | |
| 449 constantTag tag = cp->tag_at(ref_index); | |
| 450 int ref_kind = cp->method_handle_ref_kind_at(index); | |
| 451 switch (ref_kind) { | |
| 452 case JVM_REF_getField: | |
| 453 case JVM_REF_getStatic: | |
| 454 case JVM_REF_putField: | |
| 455 case JVM_REF_putStatic: | |
| 456 check_property( | |
| 457 tag.is_field(), | |
| 458 "Invalid constant pool index %u in class file %s (not a field)", | |
| 459 ref_index, CHECK_(nullHandle)); | |
| 460 break; | |
| 461 case JVM_REF_invokeVirtual: | |
| 462 case JVM_REF_invokeStatic: | |
| 463 case JVM_REF_invokeSpecial: | |
| 464 case JVM_REF_newInvokeSpecial: | |
| 465 check_property( | |
| 466 tag.is_method(), | |
| 467 "Invalid constant pool index %u in class file %s (not a method)", | |
| 468 ref_index, CHECK_(nullHandle)); | |
| 469 break; | |
| 470 case JVM_REF_invokeInterface: | |
| 471 check_property( | |
| 472 tag.is_interface_method(), | |
| 473 "Invalid constant pool index %u in class file %s (not an interface method)", | |
| 474 ref_index, CHECK_(nullHandle)); | |
| 475 break; | |
| 476 default: | |
| 477 classfile_parse_error( | |
| 478 "Bad method handle kind at constant pool index %u in class file %s", | |
| 479 index, CHECK_(nullHandle)); | |
| 480 } | |
| 481 // Keep the ref_index unchanged. It will be indirected at link-time. | |
| 482 } | |
| 483 break; | |
| 484 case JVM_CONSTANT_MethodType : | |
| 485 { | |
| 486 int ref_index = cp->method_type_index_at(index); | |
| 487 check_property( | |
| 488 valid_cp_range(ref_index, length) && | |
| 489 cp->tag_at(ref_index).is_utf8() && | |
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490 EnableInvokeDynamic, |
| 1602 | 491 "Invalid constant pool index %u in class file %s", |
| 492 ref_index, CHECK_(nullHandle)); | |
| 493 } | |
| 494 break; | |
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495 case JVM_CONSTANT_InvokeDynamic : |
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496 { |
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497 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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498 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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499 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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500 "Invalid constant pool index %u in class file %s", |
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501 name_and_type_ref_index, |
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502 CHECK_(nullHandle)); |
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503 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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504 break; |
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505 } |
| 0 | 506 default: |
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507 fatal(err_msg("bad constant pool tag value %u", |
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508 cp->tag_at(index).value())); |
| 0 | 509 ShouldNotReachHere(); |
| 510 break; | |
| 511 } // end of switch | |
| 512 } // end of for | |
| 513 | |
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514 if (_cp_patches != NULL) { |
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515 // need to treat this_class specially... |
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516 assert(EnableInvokeDynamic, ""); |
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517 int this_class_index; |
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518 { |
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519 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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520 u1* mark = cfs->current(); |
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521 u2 flags = cfs->get_u2_fast(); |
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522 this_class_index = cfs->get_u2_fast(); |
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523 cfs->set_current(mark); // revert to mark |
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524 } |
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525 |
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526 for (index = 1; index < length; index++) { // Index 0 is unused |
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527 if (has_cp_patch_at(index)) { |
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528 guarantee_property(index != this_class_index, |
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529 "Illegal constant pool patch to self at %d in class file %s", |
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530 index, CHECK_(nullHandle)); |
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531 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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532 } |
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533 } |
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534 // Ensure that all the patches have been used. |
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535 for (index = 0; index < _cp_patches->length(); index++) { |
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536 guarantee_property(!has_cp_patch_at(index), |
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537 "Unused constant pool patch at %d in class file %s", |
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538 index, CHECK_(nullHandle)); |
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539 } |
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540 } |
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541 |
| 0 | 542 if (!_need_verify) { |
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543 cp_in_error.set_in_error(false); |
| 0 | 544 return cp; |
| 545 } | |
| 546 | |
| 547 // second verification pass - checks the strings are of the right format. | |
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548 // but not yet to the other entries |
| 0 | 549 for (index = 1; index < length; index++) { |
| 550 jbyte tag = cp->tag_at(index).value(); | |
| 551 switch (tag) { | |
| 552 case JVM_CONSTANT_UnresolvedClass: { | |
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553 Symbol* class_name = cp->unresolved_klass_at(index); |
|
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554 // check the name, even if _cp_patches will overwrite it |
| 0 | 555 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
| 556 break; | |
| 557 } | |
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558 case JVM_CONSTANT_NameAndType: { |
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559 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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560 int sig_index = cp->signature_ref_index_at(index); |
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561 int name_index = cp->name_ref_index_at(index); |
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562 Symbol* name = cp->symbol_at(name_index); |
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563 Symbol* sig = cp->symbol_at(sig_index); |
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564 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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565 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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566 } else { |
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567 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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568 } |
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569 } |
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570 break; |
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571 } |
|
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572 case JVM_CONSTANT_InvokeDynamic: |
| 0 | 573 case JVM_CONSTANT_Fieldref: |
| 574 case JVM_CONSTANT_Methodref: | |
| 575 case JVM_CONSTANT_InterfaceMethodref: { | |
| 576 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
| 577 // already verified to be utf8 | |
| 578 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
| 579 // already verified to be utf8 | |
| 580 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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581 Symbol* name = cp->symbol_at(name_ref_index); |
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582 Symbol* signature = cp->symbol_at(signature_ref_index); |
| 0 | 583 if (tag == JVM_CONSTANT_Fieldref) { |
| 584 verify_legal_field_name(name, CHECK_(nullHandle)); | |
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585 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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586 // Signature is verified above, when iterating NameAndType_info. |
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587 // Need only to be sure it's the right type. |
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588 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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589 throwIllegalSignature( |
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590 "Field", name, signature, CHECK_(nullHandle)); |
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591 } |
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592 } else { |
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593 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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594 } |
| 0 | 595 } else { |
| 596 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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597 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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598 // Signature is verified above, when iterating NameAndType_info. |
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599 // Need only to be sure it's the right type. |
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600 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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601 throwIllegalSignature( |
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602 "Method", name, signature, CHECK_(nullHandle)); |
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603 } |
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604 } else { |
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605 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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606 } |
| 0 | 607 if (tag == JVM_CONSTANT_Methodref) { |
| 608 // 4509014: If a class method name begins with '<', it must be "<init>". | |
|
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609 assert(name != NULL, "method name in constant pool is null"); |
| 0 | 610 unsigned int name_len = name->utf8_length(); |
| 611 assert(name_len > 0, "bad method name"); // already verified as legal name | |
| 612 if (name->byte_at(0) == '<') { | |
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613 if (name != vmSymbols::object_initializer_name()) { |
| 0 | 614 classfile_parse_error( |
| 615 "Bad method name at constant pool index %u in class file %s", | |
| 616 name_ref_index, CHECK_(nullHandle)); | |
| 617 } | |
| 618 } | |
| 619 } | |
| 620 } | |
| 621 break; | |
| 622 } | |
| 1602 | 623 case JVM_CONSTANT_MethodHandle: { |
| 624 int ref_index = cp->method_handle_index_at(index); | |
| 625 int ref_kind = cp->method_handle_ref_kind_at(index); | |
| 626 switch (ref_kind) { | |
| 627 case JVM_REF_invokeVirtual: | |
| 628 case JVM_REF_invokeStatic: | |
| 629 case JVM_REF_invokeSpecial: | |
| 630 case JVM_REF_newInvokeSpecial: | |
| 631 { | |
| 632 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
| 633 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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634 Symbol* name = cp->symbol_at(name_ref_index); |
| 1602 | 635 if (ref_kind == JVM_REF_newInvokeSpecial) { |
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636 if (name != vmSymbols::object_initializer_name()) { |
| 1602 | 637 classfile_parse_error( |
| 638 "Bad constructor name at constant pool index %u in class file %s", | |
| 639 name_ref_index, CHECK_(nullHandle)); | |
| 640 } | |
| 641 } else { | |
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642 if (name == vmSymbols::object_initializer_name()) { |
| 1602 | 643 classfile_parse_error( |
| 644 "Bad method name at constant pool index %u in class file %s", | |
| 645 name_ref_index, CHECK_(nullHandle)); | |
| 646 } | |
| 647 } | |
| 648 } | |
| 649 break; | |
| 650 // Other ref_kinds are already fully checked in previous pass. | |
| 651 } | |
| 652 break; | |
| 653 } | |
| 654 case JVM_CONSTANT_MethodType: { | |
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655 Symbol* no_name = vmSymbols::type_name(); // place holder |
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656 Symbol* signature = cp->method_type_signature_at(index); |
| 1602 | 657 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
| 658 break; | |
| 659 } | |
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660 case JVM_CONSTANT_Utf8: { |
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661 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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662 } |
| 0 | 663 } // end of switch |
| 664 } // end of for | |
| 665 | |
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666 cp_in_error.set_in_error(false); |
| 0 | 667 return cp; |
| 668 } | |
| 669 | |
| 670 | |
|
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671 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
|
2416
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672 assert(EnableInvokeDynamic, ""); |
|
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673 BasicType patch_type = T_VOID; |
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674 switch (cp->tag_at(index).value()) { |
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675 |
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676 case JVM_CONSTANT_UnresolvedClass : |
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677 // Patching a class means pre-resolving it. |
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678 // The name in the constant pool is ignored. |
| 1602 | 679 if (java_lang_Class::is_instance(patch())) { |
|
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680 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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681 "Illegal class patch at %d in class file %s", |
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682 index, CHECK); |
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683 cp->klass_at_put(index, java_lang_Class::as_klassOop(patch())); |
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684 } else { |
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685 guarantee_property(java_lang_String::is_instance(patch()), |
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686 "Illegal class patch at %d in class file %s", |
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687 index, CHECK); |
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688 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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689 cp->unresolved_klass_at_put(index, name); |
|
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690 } |
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691 break; |
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692 |
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693 case JVM_CONSTANT_UnresolvedString : |
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694 // Patching a string means pre-resolving it. |
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695 // The spelling in the constant pool is ignored. |
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696 // The constant reference may be any object whatever. |
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697 // If it is not a real interned string, the constant is referred |
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698 // to as a "pseudo-string", and must be presented to the CP |
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699 // explicitly, because it may require scavenging. |
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700 cp->pseudo_string_at_put(index, patch()); |
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701 break; |
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702 |
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703 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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704 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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705 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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706 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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707 patch_prim: |
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708 { |
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709 jvalue value; |
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710 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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711 guarantee_property(value_type == patch_type, |
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712 "Illegal primitive patch at %d in class file %s", |
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713 index, CHECK); |
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714 switch (value_type) { |
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715 case T_INT: cp->int_at_put(index, value.i); break; |
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716 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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717 case T_LONG: cp->long_at_put(index, value.j); break; |
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718 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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719 default: assert(false, ""); |
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720 } |
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721 } |
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722 break; |
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723 |
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724 default: |
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725 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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726 guarantee_property(!has_cp_patch_at(index), |
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727 "Illegal unexpected patch at %d in class file %s", |
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728 index, CHECK); |
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729 return; |
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730 } |
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731 |
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732 // On fall-through, mark the patch as used. |
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733 clear_cp_patch_at(index); |
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734 } |
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735 |
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736 |
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737 |
| 0 | 738 class NameSigHash: public ResourceObj { |
| 739 public: | |
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740 Symbol* _name; // name |
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741 Symbol* _sig; // signature |
| 0 | 742 NameSigHash* _next; // Next entry in hash table |
| 743 }; | |
| 744 | |
| 745 | |
| 746 #define HASH_ROW_SIZE 256 | |
| 747 | |
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748 unsigned int hash(Symbol* name, Symbol* sig) { |
| 0 | 749 unsigned int raw_hash = 0; |
| 750 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
| 751 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
| 752 | |
| 753 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
| 754 } | |
| 755 | |
| 756 | |
| 757 void initialize_hashtable(NameSigHash** table) { | |
| 758 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
| 759 } | |
| 760 | |
| 761 // Return false if the name/sig combination is found in table. | |
| 762 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
| 763 // The old format checker uses heap sort to find duplicates. | |
| 764 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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765 // of table since we don't expect Symbol*'s to move. |
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766 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
| 0 | 767 assert(name != NULL, "name in constant pool is NULL"); |
| 768 | |
| 769 // First lookup for duplicates | |
| 770 int index = hash(name, sig); | |
| 771 NameSigHash* entry = table[index]; | |
| 772 while (entry != NULL) { | |
| 773 if (entry->_name == name && entry->_sig == sig) { | |
| 774 return false; | |
| 775 } | |
| 776 entry = entry->_next; | |
| 777 } | |
| 778 | |
| 779 // No duplicate is found, allocate a new entry and fill it. | |
| 780 entry = new NameSigHash(); | |
| 781 entry->_name = name; | |
| 782 entry->_sig = sig; | |
| 783 | |
| 784 // Insert into hash table | |
| 785 entry->_next = table[index]; | |
| 786 table[index] = entry; | |
| 787 | |
| 788 return true; | |
| 789 } | |
| 790 | |
| 791 | |
| 792 objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp, | |
| 793 int length, | |
| 794 Handle class_loader, | |
| 795 Handle protection_domain, | |
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796 Symbol* class_name, |
| 0 | 797 TRAPS) { |
| 798 ClassFileStream* cfs = stream(); | |
| 799 assert(length > 0, "only called for length>0"); | |
| 800 objArrayHandle nullHandle; | |
| 801 objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
| 802 objArrayHandle interfaces (THREAD, interface_oop); | |
| 803 | |
| 804 int index; | |
| 805 for (index = 0; index < length; index++) { | |
| 806 u2 interface_index = cfs->get_u2(CHECK_(nullHandle)); | |
|
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807 KlassHandle interf; |
| 0 | 808 check_property( |
| 809 valid_cp_range(interface_index, cp->length()) && | |
|
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810 is_klass_reference(cp, interface_index), |
| 0 | 811 "Interface name has bad constant pool index %u in class file %s", |
| 812 interface_index, CHECK_(nullHandle)); | |
|
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813 if (cp->tag_at(interface_index).is_klass()) { |
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814 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
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815 } else { |
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816 Symbol* unresolved_klass = cp->klass_name_at(interface_index); |
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817 |
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818 // Don't need to check legal name because it's checked when parsing constant pool. |
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819 // But need to make sure it's not an array type. |
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820 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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821 "Bad interface name in class file %s", CHECK_(nullHandle)); |
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822 |
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823 // Call resolve_super so classcircularity is checked |
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824 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, |
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825 unresolved_klass, class_loader, protection_domain, |
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826 false, CHECK_(nullHandle)); |
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827 interf = KlassHandle(THREAD, k); |
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828 |
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829 if (LinkWellKnownClasses) // my super type is well known to me |
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830 cp->klass_at_put(interface_index, interf()); // eagerly resolve |
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831 } |
| 0 | 832 |
| 833 if (!Klass::cast(interf())->is_interface()) { | |
| 834 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle); | |
| 835 } | |
| 836 interfaces->obj_at_put(index, interf()); | |
| 837 } | |
| 838 | |
| 839 if (!_need_verify || length <= 1) { | |
| 840 return interfaces; | |
| 841 } | |
| 842 | |
| 843 // Check if there's any duplicates in interfaces | |
| 844 ResourceMark rm(THREAD); | |
| 845 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 846 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 847 initialize_hashtable(interface_names); | |
| 848 bool dup = false; | |
| 849 { | |
| 850 debug_only(No_Safepoint_Verifier nsv;) | |
| 851 for (index = 0; index < length; index++) { | |
| 852 klassOop k = (klassOop)interfaces->obj_at(index); | |
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853 Symbol* name = instanceKlass::cast(k)->name(); |
| 0 | 854 // If no duplicates, add (name, NULL) in hashtable interface_names. |
| 855 if (!put_after_lookup(name, NULL, interface_names)) { | |
| 856 dup = true; | |
| 857 break; | |
| 858 } | |
| 859 } | |
| 860 } | |
| 861 if (dup) { | |
| 862 classfile_parse_error("Duplicate interface name in class file %s", | |
| 863 CHECK_(nullHandle)); | |
| 864 } | |
| 865 | |
| 866 return interfaces; | |
| 867 } | |
| 868 | |
| 869 | |
| 870 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
| 871 // Make sure the constant pool entry is of a type appropriate to this field | |
| 872 guarantee_property( | |
| 873 (constantvalue_index > 0 && | |
| 874 constantvalue_index < cp->length()), | |
| 875 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
| 876 constantvalue_index, CHECK); | |
| 877 constantTag value_type = cp->tag_at(constantvalue_index); | |
| 878 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
| 879 case T_LONG: | |
| 880 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
| 881 break; | |
| 882 case T_FLOAT: | |
| 883 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
| 884 break; | |
| 885 case T_DOUBLE: | |
| 886 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
| 887 break; | |
| 888 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
| 889 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
| 890 break; | |
| 891 case T_OBJECT: | |
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892 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
| 0 | 893 && (value_type.is_string() || value_type.is_unresolved_string())), |
| 894 "Bad string initial value in class file %s", CHECK); | |
| 895 break; | |
| 896 default: | |
| 897 classfile_parse_error( | |
| 898 "Unable to set initial value %u in class file %s", | |
| 899 constantvalue_index, CHECK); | |
| 900 } | |
| 901 } | |
| 902 | |
| 903 | |
| 904 // Parse attributes for a field. | |
| 905 void ClassFileParser::parse_field_attributes(constantPoolHandle cp, | |
| 906 u2 attributes_count, | |
| 907 bool is_static, u2 signature_index, | |
| 908 u2* constantvalue_index_addr, | |
| 909 bool* is_synthetic_addr, | |
| 910 u2* generic_signature_index_addr, | |
| 911 typeArrayHandle* field_annotations, | |
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912 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
| 0 | 913 TRAPS) { |
| 914 ClassFileStream* cfs = stream(); | |
| 915 assert(attributes_count > 0, "length should be greater than 0"); | |
| 916 u2 constantvalue_index = 0; | |
| 917 u2 generic_signature_index = 0; | |
| 918 bool is_synthetic = false; | |
| 919 u1* runtime_visible_annotations = NULL; | |
| 920 int runtime_visible_annotations_length = 0; | |
| 921 u1* runtime_invisible_annotations = NULL; | |
| 922 int runtime_invisible_annotations_length = 0; | |
| 923 while (attributes_count--) { | |
| 924 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
| 925 u2 attribute_name_index = cfs->get_u2_fast(); | |
| 926 u4 attribute_length = cfs->get_u4_fast(); | |
| 927 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
| 928 cp->tag_at(attribute_name_index).is_utf8(), | |
| 929 "Invalid field attribute index %u in class file %s", | |
| 930 attribute_name_index, | |
| 931 CHECK); | |
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932 Symbol* attribute_name = cp->symbol_at(attribute_name_index); |
| 0 | 933 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
| 934 // ignore if non-static | |
| 935 if (constantvalue_index != 0) { | |
| 936 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
| 937 } | |
| 938 check_property( | |
| 939 attribute_length == 2, | |
| 940 "Invalid ConstantValue field attribute length %u in class file %s", | |
| 941 attribute_length, CHECK); | |
| 942 constantvalue_index = cfs->get_u2(CHECK); | |
| 943 if (_need_verify) { | |
| 944 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
| 945 } | |
| 946 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
| 947 if (attribute_length != 0) { | |
| 948 classfile_parse_error( | |
| 949 "Invalid Synthetic field attribute length %u in class file %s", | |
| 950 attribute_length, CHECK); | |
| 951 } | |
| 952 is_synthetic = true; | |
| 953 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
| 954 if (attribute_length != 0) { | |
| 955 classfile_parse_error( | |
| 956 "Invalid Deprecated field attribute length %u in class file %s", | |
| 957 attribute_length, CHECK); | |
| 958 } | |
| 959 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 960 if (attribute_name == vmSymbols::tag_signature()) { | |
| 961 if (attribute_length != 2) { | |
| 962 classfile_parse_error( | |
| 963 "Wrong size %u for field's Signature attribute in class file %s", | |
| 964 attribute_length, CHECK); | |
| 965 } | |
| 966 generic_signature_index = cfs->get_u2(CHECK); | |
| 967 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
| 968 runtime_visible_annotations_length = attribute_length; | |
| 969 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 970 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
| 971 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
| 972 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 973 runtime_invisible_annotations_length = attribute_length; | |
| 974 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 975 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 976 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
| 977 } else { | |
| 978 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
| 979 } | |
| 980 } else { | |
| 981 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
| 982 } | |
| 983 } | |
| 984 | |
| 985 *constantvalue_index_addr = constantvalue_index; | |
| 986 *is_synthetic_addr = is_synthetic; | |
| 987 *generic_signature_index_addr = generic_signature_index; | |
| 988 *field_annotations = assemble_annotations(runtime_visible_annotations, | |
| 989 runtime_visible_annotations_length, | |
| 990 runtime_invisible_annotations, | |
| 991 runtime_invisible_annotations_length, | |
| 992 CHECK); | |
| 993 return; | |
| 994 } | |
| 995 | |
| 996 | |
| 997 // Field allocation types. Used for computing field offsets. | |
| 998 | |
| 999 enum FieldAllocationType { | |
| 1000 STATIC_OOP, // Oops | |
| 1001 STATIC_BYTE, // Boolean, Byte, char | |
| 1002 STATIC_SHORT, // shorts | |
| 1003 STATIC_WORD, // ints | |
| 3938 | 1004 STATIC_DOUBLE, // aligned long or double |
| 0 | 1005 NONSTATIC_OOP, |
| 1006 NONSTATIC_BYTE, | |
| 1007 NONSTATIC_SHORT, | |
| 1008 NONSTATIC_WORD, | |
| 1009 NONSTATIC_DOUBLE, | |
| 3938 | 1010 MAX_FIELD_ALLOCATION_TYPE, |
| 1011 BAD_ALLOCATION_TYPE = -1 | |
| 0 | 1012 }; |
| 1013 | |
| 3938 | 1014 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
| 1015 BAD_ALLOCATION_TYPE, // 0 | |
| 1016 BAD_ALLOCATION_TYPE, // 1 | |
| 1017 BAD_ALLOCATION_TYPE, // 2 | |
| 1018 BAD_ALLOCATION_TYPE, // 3 | |
| 1019 NONSTATIC_BYTE , // T_BOOLEAN = 4, | |
| 1020 NONSTATIC_SHORT, // T_CHAR = 5, | |
| 1021 NONSTATIC_WORD, // T_FLOAT = 6, | |
| 1022 NONSTATIC_DOUBLE, // T_DOUBLE = 7, | |
| 1023 NONSTATIC_BYTE, // T_BYTE = 8, | |
| 1024 NONSTATIC_SHORT, // T_SHORT = 9, | |
| 1025 NONSTATIC_WORD, // T_INT = 10, | |
| 1026 NONSTATIC_DOUBLE, // T_LONG = 11, | |
| 1027 NONSTATIC_OOP, // T_OBJECT = 12, | |
| 1028 NONSTATIC_OOP, // T_ARRAY = 13, | |
| 1029 BAD_ALLOCATION_TYPE, // T_VOID = 14, | |
| 1030 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, | |
| 1031 BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16, | |
| 1032 BAD_ALLOCATION_TYPE, // T_CONFLICT = 17, | |
| 1033 BAD_ALLOCATION_TYPE, // 0 | |
| 1034 BAD_ALLOCATION_TYPE, // 1 | |
| 1035 BAD_ALLOCATION_TYPE, // 2 | |
| 1036 BAD_ALLOCATION_TYPE, // 3 | |
| 1037 STATIC_BYTE , // T_BOOLEAN = 4, | |
| 1038 STATIC_SHORT, // T_CHAR = 5, | |
| 1039 STATIC_WORD, // T_FLOAT = 6, | |
| 1040 STATIC_DOUBLE, // T_DOUBLE = 7, | |
| 1041 STATIC_BYTE, // T_BYTE = 8, | |
| 1042 STATIC_SHORT, // T_SHORT = 9, | |
| 1043 STATIC_WORD, // T_INT = 10, | |
| 1044 STATIC_DOUBLE, // T_LONG = 11, | |
| 1045 STATIC_OOP, // T_OBJECT = 12, | |
| 1046 STATIC_OOP, // T_ARRAY = 13, | |
| 1047 BAD_ALLOCATION_TYPE, // T_VOID = 14, | |
| 1048 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, | |
| 1049 BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16, | |
| 1050 BAD_ALLOCATION_TYPE, // T_CONFLICT = 17, | |
| 0 | 1051 }; |
| 1052 | |
| 3938 | 1053 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
| 1054 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
| 1055 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
| 1056 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
| 1057 return result; | |
| 1058 } | |
| 1059 | |
| 1060 class FieldAllocationCount: public ResourceObj { | |
| 1061 public: | |
|
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1062 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
| 3938 | 1063 |
| 1064 FieldAllocationCount() { | |
| 1065 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
| 1066 count[i] = 0; | |
| 1067 } | |
| 1068 } | |
| 1069 | |
| 1070 FieldAllocationType update(bool is_static, BasicType type) { | |
| 1071 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1072 // Make sure there is no overflow with injected fields. |
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1073 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
| 3938 | 1074 count[atype]++; |
| 1075 return atype; | |
| 1076 } | |
| 1077 }; | |
| 1078 | |
| 1079 | |
| 1080 typeArrayHandle ClassFileParser::parse_fields(Symbol* class_name, | |
| 1081 constantPoolHandle cp, bool is_interface, | |
| 1082 FieldAllocationCount *fac, | |
| 1083 objArrayHandle* fields_annotations, | |
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1084 u2* java_fields_count_ptr, TRAPS) { |
| 0 | 1085 ClassFileStream* cfs = stream(); |
| 1086 typeArrayHandle nullHandle; | |
| 1087 cfs->guarantee_more(2, CHECK_(nullHandle)); // length | |
| 1088 u2 length = cfs->get_u2_fast(); | |
| 3938 | 1089 *java_fields_count_ptr = length; |
| 1090 | |
| 1091 int num_injected = 0; | |
| 1092 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1093 int total_fields = length + num_injected; |
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1094 |
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1095 // The field array starts with tuples of shorts |
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1096 // [access, name index, sig index, initial value index, byte offset]. |
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1097 // A generic signature slot only exists for field with generic |
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1098 // signature attribute. And the access flag is set with |
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1099 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1100 // signature slots are at the end of the field array and after all |
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1101 // other fields data. |
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1102 // |
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1103 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1104 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1105 // ... |
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1106 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1107 // [generic signature index] |
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1108 // [generic signature index] |
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1109 // ... |
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1110 // |
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1111 // Allocate a temporary resource array for field data. For each field, |
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1112 // a slot is reserved in the temporary array for the generic signature |
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1113 // index. After parsing all fields, the data are copied to a permanent |
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1114 // array and any unused slots will be discarded. |
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1115 ResourceMark rm(THREAD); |
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1116 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1117 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
| 0 | 1118 |
| 1119 typeArrayHandle field_annotations; | |
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1120 // The generic signature slots start after all other fields' data. |
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1121 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1122 int num_generic_signature = 0; |
| 0 | 1123 for (int n = 0; n < length; n++) { |
| 1124 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
| 1125 | |
| 1126 AccessFlags access_flags; | |
| 1127 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 1128 verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle)); | |
| 1129 access_flags.set_flags(flags); | |
| 1130 | |
| 1131 u2 name_index = cfs->get_u2_fast(); | |
| 1132 int cp_size = cp->length(); | |
| 1133 check_property( | |
| 1134 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
| 1135 "Invalid constant pool index %u for field name in class file %s", | |
| 1136 name_index, CHECK_(nullHandle)); | |
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1137 Symbol* name = cp->symbol_at(name_index); |
| 0 | 1138 verify_legal_field_name(name, CHECK_(nullHandle)); |
| 1139 | |
| 1140 u2 signature_index = cfs->get_u2_fast(); | |
| 1141 check_property( | |
| 1142 valid_cp_range(signature_index, cp_size) && | |
| 1143 cp->tag_at(signature_index).is_utf8(), | |
| 1144 "Invalid constant pool index %u for field signature in class file %s", | |
| 1145 signature_index, CHECK_(nullHandle)); | |
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1146 Symbol* sig = cp->symbol_at(signature_index); |
| 0 | 1147 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
| 1148 | |
| 1149 u2 constantvalue_index = 0; | |
| 1150 bool is_synthetic = false; | |
| 1151 u2 generic_signature_index = 0; | |
| 1152 bool is_static = access_flags.is_static(); | |
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1153 FieldAnnotationCollector parsed_annotations; |
| 0 | 1154 |
| 1155 u2 attributes_count = cfs->get_u2_fast(); | |
| 1156 if (attributes_count > 0) { | |
| 1157 parse_field_attributes(cp, attributes_count, is_static, signature_index, | |
| 1158 &constantvalue_index, &is_synthetic, | |
| 1159 &generic_signature_index, &field_annotations, | |
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1160 &parsed_annotations, |
| 0 | 1161 CHECK_(nullHandle)); |
| 1162 if (field_annotations.not_null()) { | |
| 1163 if (fields_annotations->is_null()) { | |
| 1164 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
| 1165 *fields_annotations = objArrayHandle(THREAD, md); | |
| 1166 } | |
| 1167 (*fields_annotations)->obj_at_put(n, field_annotations()); | |
| 1168 } | |
| 1169 if (is_synthetic) { | |
| 1170 access_flags.set_is_synthetic(); | |
| 1171 } | |
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1172 if (generic_signature_index != 0) { |
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1173 access_flags.set_field_has_generic_signature(); |
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1174 fa[generic_signature_slot] = generic_signature_index; |
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1175 generic_signature_slot ++; |
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1176 num_generic_signature ++; |
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1177 } |
| 0 | 1178 } |
| 1179 | |
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1180 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
| 3938 | 1181 field->initialize(access_flags.as_short(), |
| 1182 name_index, | |
| 1183 signature_index, | |
| 1184 constantvalue_index, | |
| 1185 0); | |
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1186 if (parsed_annotations.has_any_annotations()) |
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1187 parsed_annotations.apply_to(field); |
| 3938 | 1188 |
| 1189 BasicType type = cp->basic_type_for_signature_at(signature_index); | |
| 0 | 1190 |
| 1191 // Remember how many oops we encountered and compute allocation type | |
| 3938 | 1192 FieldAllocationType atype = fac->update(is_static, type); |
| 0 | 1193 |
| 1194 // The correct offset is computed later (all oop fields will be located together) | |
| 1195 // We temporarily store the allocation type in the offset field | |
| 3938 | 1196 field->set_offset(atype); |
| 1197 } | |
| 1198 | |
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1199 int index = length; |
| 3938 | 1200 if (num_injected != 0) { |
| 1201 for (int n = 0; n < num_injected; n++) { | |
| 1202 // Check for duplicates | |
| 1203 if (injected[n].may_be_java) { | |
| 1204 Symbol* name = injected[n].name(); | |
| 1205 Symbol* signature = injected[n].signature(); | |
| 1206 bool duplicate = false; | |
| 1207 for (int i = 0; i < length; i++) { | |
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1208 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
| 3938 | 1209 if (name == cp->symbol_at(f->name_index()) && |
| 1210 signature == cp->symbol_at(f->signature_index())) { | |
| 1211 // Symbol is desclared in Java so skip this one | |
| 1212 duplicate = true; | |
| 1213 break; | |
| 1214 } | |
| 1215 } | |
| 1216 if (duplicate) { | |
| 1217 // These will be removed from the field array at the end | |
| 1218 continue; | |
| 1219 } | |
| 1220 } | |
| 1221 | |
| 1222 // Injected field | |
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1223 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
| 3938 | 1224 field->initialize(JVM_ACC_FIELD_INTERNAL, |
| 1225 injected[n].name_index, | |
| 1226 injected[n].signature_index, | |
| 1227 0, | |
| 1228 0); | |
| 1229 | |
| 1230 BasicType type = FieldType::basic_type(injected[n].signature()); | |
| 1231 | |
| 1232 // Remember how many oops we encountered and compute allocation type | |
| 1233 FieldAllocationType atype = fac->update(false, type); | |
| 1234 | |
| 1235 // The correct offset is computed later (all oop fields will be located together) | |
| 1236 // We temporarily store the allocation type in the offset field | |
| 1237 field->set_offset(atype); | |
| 1238 index++; | |
| 1239 } | |
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1240 } |
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1241 |
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1242 // Now copy the fields' data from the temporary resource array. |
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1243 // Sometimes injected fields already exist in the Java source so |
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1244 // the fields array could be too long. In that case the |
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1245 // fields array is trimed. Also unused slots that were reserved |
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1246 // for generic signature indexes are discarded. |
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1247 typeArrayOop new_fields = oopFactory::new_permanent_shortArray( |
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1248 index * FieldInfo::field_slots + num_generic_signature, |
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1249 CHECK_(nullHandle)); |
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1250 typeArrayHandle fields(THREAD, new_fields); |
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1251 { |
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1252 int i = 0; |
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1253 for (; i < index * FieldInfo::field_slots; i++) { |
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1254 new_fields->short_at_put(i, fa[i]); |
| 3938 | 1255 } |
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1256 for (int j = total_fields * FieldInfo::field_slots; |
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1257 j < generic_signature_slot; j++) { |
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1258 new_fields->short_at_put(i++, fa[j]); |
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1259 } |
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1260 assert(i == new_fields->length(), ""); |
| 0 | 1261 } |
| 1262 | |
| 1263 if (_need_verify && length > 1) { | |
| 1264 // Check duplicated fields | |
| 1265 ResourceMark rm(THREAD); | |
| 1266 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 1267 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 1268 initialize_hashtable(names_and_sigs); | |
| 1269 bool dup = false; | |
| 1270 { | |
| 1271 debug_only(No_Safepoint_Verifier nsv;) | |
| 3938 | 1272 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
| 1273 Symbol* name = fs.name(); | |
| 1274 Symbol* sig = fs.signature(); | |
| 0 | 1275 // If no duplicates, add name/signature in hashtable names_and_sigs. |
| 1276 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
| 1277 dup = true; | |
| 1278 break; | |
| 1279 } | |
| 1280 } | |
| 1281 } | |
| 1282 if (dup) { | |
| 1283 classfile_parse_error("Duplicate field name&signature in class file %s", | |
| 1284 CHECK_(nullHandle)); | |
| 1285 } | |
| 1286 } | |
| 1287 | |
| 1288 return fields; | |
| 1289 } | |
| 1290 | |
| 1291 | |
| 1292 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
| 1293 while (length-- > 0) { | |
| 1294 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
| 1295 } | |
| 1296 } | |
| 1297 | |
| 1298 | |
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1299 u2* ClassFileParser::parse_exception_table(u4 code_length, |
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1300 u4 exception_table_length, |
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1301 constantPoolHandle cp, |
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1302 TRAPS) { |
| 0 | 1303 ClassFileStream* cfs = stream(); |
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1304 |
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1305 u2* exception_table_start = cfs->get_u2_buffer(); |
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1306 assert(exception_table_start != NULL, "null exception table"); |
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1307 cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
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1308 // Will check legal target after parsing code array in verifier. |
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1309 if (_need_verify) { |
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1310 for (unsigned int i = 0; i < exception_table_length; i++) { |
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1311 u2 start_pc = cfs->get_u2_fast(); |
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1312 u2 end_pc = cfs->get_u2_fast(); |
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1313 u2 handler_pc = cfs->get_u2_fast(); |
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1314 u2 catch_type_index = cfs->get_u2_fast(); |
| 0 | 1315 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
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1316 "Illegal exception table range in class file %s", |
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1317 CHECK_NULL); |
| 0 | 1318 guarantee_property(handler_pc < code_length, |
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1319 "Illegal exception table handler in class file %s", |
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1320 CHECK_NULL); |
| 0 | 1321 if (catch_type_index != 0) { |
| 1322 guarantee_property(valid_cp_range(catch_type_index, cp->length()) && | |
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1323 is_klass_reference(cp, catch_type_index), |
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1324 "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
| 0 | 1325 } |
| 1326 } | |
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1327 } else { |
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1328 cfs->skip_u2_fast(exception_table_length * 4); |
| 0 | 1329 } |
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1330 return exception_table_start; |
| 0 | 1331 } |
| 1332 | |
| 1333 void ClassFileParser::parse_linenumber_table( | |
| 1334 u4 code_attribute_length, u4 code_length, | |
| 1335 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
| 1336 ClassFileStream* cfs = stream(); | |
| 1337 unsigned int num_entries = cfs->get_u2(CHECK); | |
| 1338 | |
| 1339 // Each entry is a u2 start_pc, and a u2 line_number | |
| 1340 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
| 1341 | |
| 1342 // Verify line number attribute and table length | |
| 1343 check_property( | |
| 1344 code_attribute_length == sizeof(u2) + length_in_bytes, | |
| 1345 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
| 1346 | |
| 1347 cfs->guarantee_more(length_in_bytes, CHECK); | |
| 1348 | |
| 1349 if ((*write_stream) == NULL) { | |
| 1350 if (length_in_bytes > fixed_buffer_size) { | |
| 1351 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
| 1352 } else { | |
| 1353 (*write_stream) = new CompressedLineNumberWriteStream( | |
| 1354 linenumbertable_buffer, fixed_buffer_size); | |
| 1355 } | |
| 1356 } | |
| 1357 | |
| 1358 while (num_entries-- > 0) { | |
| 1359 u2 bci = cfs->get_u2_fast(); // start_pc | |
| 1360 u2 line = cfs->get_u2_fast(); // line_number | |
| 1361 guarantee_property(bci < code_length, | |
| 1362 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
| 1363 (*write_stream)->write_pair(bci, line); | |
| 1364 } | |
| 1365 } | |
| 1366 | |
| 1367 | |
| 1368 // Class file LocalVariableTable elements. | |
| 1369 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
| 1370 public: | |
| 1371 u2 start_bci; | |
| 1372 u2 length; | |
| 1373 u2 name_cp_index; | |
| 1374 u2 descriptor_cp_index; | |
| 1375 u2 slot; | |
| 1376 }; | |
| 1377 | |
| 1378 | |
| 6197 | 1379 class LVT_Hash: public CHeapObj<mtClass> { |
| 0 | 1380 public: |
| 1381 LocalVariableTableElement *_elem; // element | |
| 1382 LVT_Hash* _next; // Next entry in hash table | |
| 1383 }; | |
| 1384 | |
| 1385 unsigned int hash(LocalVariableTableElement *elem) { | |
| 1386 unsigned int raw_hash = elem->start_bci; | |
| 1387 | |
| 1388 raw_hash = elem->length + raw_hash * 37; | |
| 1389 raw_hash = elem->name_cp_index + raw_hash * 37; | |
| 1390 raw_hash = elem->slot + raw_hash * 37; | |
| 1391 | |
| 1392 return raw_hash % HASH_ROW_SIZE; | |
| 1393 } | |
| 1394 | |
| 1395 void initialize_hashtable(LVT_Hash** table) { | |
| 1396 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
| 1397 table[i] = NULL; | |
| 1398 } | |
| 1399 } | |
| 1400 | |
| 1401 void clear_hashtable(LVT_Hash** table) { | |
| 1402 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
| 1403 LVT_Hash* current = table[i]; | |
| 1404 LVT_Hash* next; | |
| 1405 while (current != NULL) { | |
| 1406 next = current->_next; | |
| 1407 current->_next = NULL; | |
| 1408 delete(current); | |
| 1409 current = next; | |
| 1410 } | |
| 1411 table[i] = NULL; | |
| 1412 } | |
| 1413 } | |
| 1414 | |
| 1415 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
| 1416 LVT_Hash* entry = table[index]; | |
| 1417 | |
| 1418 /* | |
| 1419 * 3-tuple start_bci/length/slot has to be unique key, | |
| 1420 * so the following comparison seems to be redundant: | |
| 1421 * && elem->name_cp_index == entry->_elem->name_cp_index | |
| 1422 */ | |
| 1423 while (entry != NULL) { | |
| 1424 if (elem->start_bci == entry->_elem->start_bci | |
| 1425 && elem->length == entry->_elem->length | |
| 1426 && elem->name_cp_index == entry->_elem->name_cp_index | |
| 1427 && elem->slot == entry->_elem->slot | |
| 1428 ) { | |
| 1429 return entry; | |
| 1430 } | |
| 1431 entry = entry->_next; | |
| 1432 } | |
| 1433 return NULL; | |
| 1434 } | |
| 1435 | |
| 1436 // Return false if the local variable is found in table. | |
| 1437 // Return true if no duplicate is found. | |
| 1438 // And local variable is added as a new entry in table. | |
| 1439 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
| 1440 // First lookup for duplicates | |
| 1441 int index = hash(elem); | |
| 1442 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
| 1443 | |
| 1444 if (entry != NULL) { | |
| 1445 return false; | |
| 1446 } | |
| 1447 // No duplicate is found, allocate a new entry and fill it. | |
| 1448 if ((entry = new LVT_Hash()) == NULL) { | |
| 1449 return false; | |
| 1450 } | |
| 1451 entry->_elem = elem; | |
| 1452 | |
| 1453 // Insert into hash table | |
| 1454 entry->_next = table[index]; | |
| 1455 table[index] = entry; | |
| 1456 | |
| 1457 return true; | |
| 1458 } | |
| 1459 | |
| 1460 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
| 1461 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
| 1462 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
| 1463 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
| 1464 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
| 1465 lvt->signature_cp_index = 0; | |
| 1466 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
| 1467 } | |
| 1468 | |
| 1469 // Function is used to parse both attributes: | |
| 1470 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
| 1471 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
| 1472 u2 max_locals, | |
| 1473 u4 code_attribute_length, | |
| 1474 constantPoolHandle cp, | |
| 1475 u2* localvariable_table_length, | |
| 1476 bool isLVTT, | |
| 1477 TRAPS) { | |
| 1478 ClassFileStream* cfs = stream(); | |
| 1479 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
| 1480 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
| 1481 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
| 1482 // Verify local variable table attribute has right length | |
| 1483 if (_need_verify) { | |
| 1484 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
| 1485 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
| 1486 } | |
| 1487 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
| 1488 assert(localvariable_table_start != NULL, "null local variable table"); | |
| 1489 if (!_need_verify) { | |
| 1490 cfs->skip_u2_fast(size); | |
| 1491 } else { | |
| 1492 cfs->guarantee_more(size * 2, CHECK_NULL); | |
| 1493 for(int i = 0; i < (*localvariable_table_length); i++) { | |
| 1494 u2 start_pc = cfs->get_u2_fast(); | |
| 1495 u2 length = cfs->get_u2_fast(); | |
| 1496 u2 name_index = cfs->get_u2_fast(); | |
| 1497 u2 descriptor_index = cfs->get_u2_fast(); | |
| 1498 u2 index = cfs->get_u2_fast(); | |
| 1499 // Assign to a u4 to avoid overflow | |
| 1500 u4 end_pc = (u4)start_pc + (u4)length; | |
| 1501 | |
| 1502 if (start_pc >= code_length) { | |
| 1503 classfile_parse_error( | |
| 1504 "Invalid start_pc %u in %s in class file %s", | |
| 1505 start_pc, tbl_name, CHECK_NULL); | |
| 1506 } | |
| 1507 if (end_pc > code_length) { | |
| 1508 classfile_parse_error( | |
| 1509 "Invalid length %u in %s in class file %s", | |
| 1510 length, tbl_name, CHECK_NULL); | |
| 1511 } | |
| 1512 int cp_size = cp->length(); | |
| 1513 guarantee_property( | |
| 1514 valid_cp_range(name_index, cp_size) && | |
| 1515 cp->tag_at(name_index).is_utf8(), | |
| 1516 "Name index %u in %s has bad constant type in class file %s", | |
| 1517 name_index, tbl_name, CHECK_NULL); | |
| 1518 guarantee_property( | |
| 1519 valid_cp_range(descriptor_index, cp_size) && | |
| 1520 cp->tag_at(descriptor_index).is_utf8(), | |
| 1521 "Signature index %u in %s has bad constant type in class file %s", | |
| 1522 descriptor_index, tbl_name, CHECK_NULL); | |
| 1523 | |
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1524 Symbol* name = cp->symbol_at(name_index); |
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1525 Symbol* sig = cp->symbol_at(descriptor_index); |
| 0 | 1526 verify_legal_field_name(name, CHECK_NULL); |
| 1527 u2 extra_slot = 0; | |
| 1528 if (!isLVTT) { | |
| 1529 verify_legal_field_signature(name, sig, CHECK_NULL); | |
| 1530 | |
| 1531 // 4894874: check special cases for double and long local variables | |
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1532 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
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1533 sig == vmSymbols::type_signature(T_LONG)) { |
| 0 | 1534 extra_slot = 1; |
| 1535 } | |
| 1536 } | |
| 1537 guarantee_property((index + extra_slot) < max_locals, | |
| 1538 "Invalid index %u in %s in class file %s", | |
| 1539 index, tbl_name, CHECK_NULL); | |
| 1540 } | |
| 1541 } | |
| 1542 return localvariable_table_start; | |
| 1543 } | |
| 1544 | |
| 1545 | |
| 1546 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
| 1547 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { | |
| 1548 ClassFileStream* cfs = stream(); | |
| 1549 u2 index = 0; // index in the array with long/double occupying two slots | |
| 1550 u4 i1 = *u1_index; | |
| 1551 u4 i2 = *u2_index + 1; | |
| 1552 for(int i = 0; i < array_length; i++) { | |
| 1553 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
| 1554 index++; | |
| 1555 if (tag == ITEM_Long || tag == ITEM_Double) { | |
| 1556 index++; | |
| 1557 } else if (tag == ITEM_Object) { | |
| 1558 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
| 1559 guarantee_property(valid_cp_range(class_index, cp->length()) && | |
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1560 is_klass_reference(cp, class_index), |
| 0 | 1561 "Bad class index %u in StackMap in class file %s", |
| 1562 class_index, CHECK); | |
| 1563 } else if (tag == ITEM_Uninitialized) { | |
| 1564 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
| 1565 guarantee_property( | |
| 1566 offset < code_length, | |
| 1567 "Bad uninitialized type offset %u in StackMap in class file %s", | |
| 1568 offset, CHECK); | |
| 1569 } else { | |
| 1570 guarantee_property( | |
| 1571 tag <= (u1)ITEM_Uninitialized, | |
| 1572 "Unknown variable type %u in StackMap in class file %s", | |
| 1573 tag, CHECK); | |
| 1574 } | |
| 1575 } | |
| 1576 u2_array[*u2_index] = index; | |
| 1577 *u1_index = i1; | |
| 1578 *u2_index = i2; | |
| 1579 } | |
| 1580 | |
| 1581 typeArrayOop ClassFileParser::parse_stackmap_table( | |
| 1582 u4 code_attribute_length, TRAPS) { | |
| 1583 if (code_attribute_length == 0) | |
| 1584 return NULL; | |
| 1585 | |
| 1586 ClassFileStream* cfs = stream(); | |
| 1587 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
| 1588 assert(stackmap_table_start != NULL, "null stackmap table"); | |
| 1589 | |
| 1590 // check code_attribute_length first | |
| 1591 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
| 1592 | |
| 1593 if (!_need_verify && !DumpSharedSpaces) { | |
| 1594 return NULL; | |
| 1595 } | |
| 1596 | |
| 1597 typeArrayOop stackmap_data = | |
| 1598 oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL); | |
| 1599 | |
| 1600 stackmap_data->set_length(code_attribute_length); | |
| 1601 memcpy((void*)stackmap_data->byte_at_addr(0), | |
| 1602 (void*)stackmap_table_start, code_attribute_length); | |
| 1603 return stackmap_data; | |
| 1604 } | |
| 1605 | |
| 1606 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
| 1607 u4 method_attribute_length, | |
| 1608 constantPoolHandle cp, TRAPS) { | |
| 1609 ClassFileStream* cfs = stream(); | |
| 1610 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
| 1611 *checked_exceptions_length = cfs->get_u2_fast(); | |
| 1612 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 1613 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
| 1614 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
| 1615 if (!_need_verify) { | |
| 1616 cfs->skip_u2_fast(size); | |
| 1617 } else { | |
| 1618 // Verify each value in the checked exception table | |
| 1619 u2 checked_exception; | |
| 1620 u2 len = *checked_exceptions_length; | |
| 1621 cfs->guarantee_more(2 * len, CHECK_NULL); | |
| 1622 for (int i = 0; i < len; i++) { | |
| 1623 checked_exception = cfs->get_u2_fast(); | |
| 1624 check_property( | |
| 1625 valid_cp_range(checked_exception, cp->length()) && | |
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1626 is_klass_reference(cp, checked_exception), |
| 0 | 1627 "Exception name has bad type at constant pool %u in class file %s", |
| 1628 checked_exception, CHECK_NULL); | |
| 1629 } | |
| 1630 } | |
| 1631 // check exceptions attribute length | |
| 1632 if (_need_verify) { | |
| 1633 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
| 1634 sizeof(u2) * size), | |
| 1635 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
| 1636 } | |
| 1637 return checked_exceptions_start; | |
| 1638 } | |
| 1639 | |
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1640 void ClassFileParser::throwIllegalSignature( |
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1641 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
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1642 ResourceMark rm(THREAD); |
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1643 Exceptions::fthrow(THREAD_AND_LOCATION, |
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1644 vmSymbols::java_lang_ClassFormatError(), |
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1645 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
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1646 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
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1647 } |
| 0 | 1648 |
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1649 // Skip an annotation. Return >=limit if there is any problem. |
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1650 int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
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1651 // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
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1652 // value := switch (tag:u1) { ... } |
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1653 index += 2; // skip atype |
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1654 if ((index += 2) >= limit) return limit; // read nmem |
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1655 int nmem = Bytes::get_Java_u2(buffer+index-2); |
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1656 while (--nmem >= 0 && index < limit) { |
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1657 index += 2; // skip member |
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1658 index = skip_annotation_value(buffer, limit, index); |
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1659 } |
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1660 return index; |
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1661 } |
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1662 |
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1663 // 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
|
1664 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
|
1665 // value := switch (tag:u1) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1666 // 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
|
1667 // case e: e_class:u2 e_name:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1668 // case s: s_con:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1669 // case [: do(nval:u2) {value}; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1670 // case @: annotation; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1671 // case s: s_con:u2; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1672 // } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1673 if ((index += 1) >= limit) return limit; // read tag |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1674 u1 tag = buffer[index-1]; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1675 switch (tag) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1676 case 'B': case 'C': case 'I': case 'S': case 'Z': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1677 case 'D': case 'F': case 'J': case 'c': case 's': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1678 index += 2; // skip con or s_con |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1679 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1680 case 'e': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1681 index += 4; // skip e_class, e_name |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1682 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1683 case '[': |
|
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 if ((index += 2) >= limit) return limit; // read nval |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1686 int nval = Bytes::get_Java_u2(buffer+index-2); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1687 while (--nval >= 0 && index < limit) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1688 index = skip_annotation_value(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1689 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1690 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1691 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1692 case '@': |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1693 index = skip_annotation(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1694 break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1695 default: |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1696 assert(false, "annotation tag"); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1697 return limit; // bad tag byte |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1698 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1699 return index; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1700 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1701 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1702 // Sift through annotations, looking for those significant to the VM: |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1703 void ClassFileParser::parse_annotations(u1* buffer, int limit, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1704 constantPoolHandle cp, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1705 ClassFileParser::AnnotationCollector* coll, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1706 TRAPS) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1707 // annotations := do(nann:u2) {annotation} |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1708 int index = 0; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1709 if ((index += 2) >= limit) return; // read nann |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1710 int nann = Bytes::get_Java_u2(buffer+index-2); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1711 enum { // initial annotation layout |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1712 atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1713 count_off = 2, // u2 such as 1 (one value) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1714 member_off = 4, // utf8 such as 'value' |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1715 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
|
1716 e_tag_val = 'e', |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1717 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
|
1718 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
|
1719 e_size = 11, // end of 'e' annotation |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1720 c_tag_val = 'c', |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1721 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
|
1722 c_size = 9, // end of 'c' annotation |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1723 min_size = 6 // smallest possible size (zero members) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1724 }; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1725 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1726 int index0 = index; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1727 index = skip_annotation(buffer, limit, index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1728 u1* abase = buffer + index0; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1729 int atype = Bytes::get_Java_u2(abase + atype_off); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1730 int count = Bytes::get_Java_u2(abase + count_off); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1731 Symbol* aname = check_symbol_at(cp, atype); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1732 if (aname == NULL) break; // invalid annotation name |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1733 Symbol* member = NULL; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1734 if (count >= 1) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1735 int member_index = Bytes::get_Java_u2(abase + member_off); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1736 member = check_symbol_at(cp, member_index); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1737 if (member == NULL) break; // invalid member name |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1738 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1739 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1740 // Here is where parsing particular annotations will take place. |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1741 AnnotationCollector::ID id = coll->annotation_index(aname); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1742 if (id == AnnotationCollector::_unknown) continue; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1743 coll->set_annotation(id); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1744 // 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
|
1745 if (count == 0) continue; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1746 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1747 // For the record, here is how annotation payloads can be collected. |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1748 // Suppose we want to capture @Retention.value. Here is how: |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1749 //if (id == AnnotationCollector::_class_Retention) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1750 // Symbol* payload = NULL; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1751 // if (count == 1 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1752 // && e_size == (index0 - index) // match size |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1753 // && e_tag_val == *(abase + tag_off) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1754 // && (check_symbol_at(cp, Bytes::get_Java_u2(abase + e_type_off)) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1755 // == vmSymbols::RetentionPolicy_signature()) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1756 // && member == vmSymbols::value_name()) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1757 // payload = check_symbol_at(cp, Bytes::get_Java_u2(abase + e_con_off)); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1758 // } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1759 // check_property(payload != NULL, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1760 // "Invalid @Retention annotation at offset %u in class file %s", |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1761 // index0, CHECK); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1762 // if (payload != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1763 // payload->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1764 // coll->_class_RetentionPolicy = payload; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1765 // } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1766 //} |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1767 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1768 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1769 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1770 ClassFileParser::AnnotationCollector::ID ClassFileParser::AnnotationCollector::annotation_index(Symbol* name) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1771 vmSymbols::SID sid = vmSymbols::find_sid(name); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1772 switch (sid) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1773 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1774 if (_location != _in_method) break; // only allow for methods |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1775 return _method_ForceInline; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1776 default: break; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1777 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1778 return AnnotationCollector::_unknown; |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1779 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1780 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1781 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1782 fatal("no field annotations yet"); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1783 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1784 |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1785 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1786 if (has_annotation(_method_ForceInline)) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1787 m->set_force_inline(true); |
|
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1788 } |
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1789 |
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1790 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
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1791 fatal("no class annotations yet"); |
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1792 } |
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1793 |
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1794 |
| 0 | 1795 #define MAX_ARGS_SIZE 255 |
| 1796 #define MAX_CODE_SIZE 65535 | |
| 1797 #define INITIAL_MAX_LVT_NUMBER 256 | |
| 1798 | |
| 1799 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
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1800 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
| 0 | 1801 // methodOop to save footprint, so we only know the size of the resulting methodOop when the |
| 1802 // entire method attribute is parsed. | |
| 1803 // | |
| 1804 // The promoted_flags parameter is used to pass relevant access_flags | |
| 1805 // from the method back up to the containing klass. These flag values | |
| 1806 // are added to klass's access_flags. | |
| 1807 | |
| 1808 methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface, | |
| 1809 AccessFlags *promoted_flags, | |
| 1810 typeArrayHandle* method_annotations, | |
| 1811 typeArrayHandle* method_parameter_annotations, | |
| 1812 typeArrayHandle* method_default_annotations, | |
| 1813 TRAPS) { | |
| 1814 ClassFileStream* cfs = stream(); | |
| 1815 methodHandle nullHandle; | |
| 1816 ResourceMark rm(THREAD); | |
| 1817 // Parse fixed parts | |
| 1818 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
| 1819 | |
| 1820 int flags = cfs->get_u2_fast(); | |
| 1821 u2 name_index = cfs->get_u2_fast(); | |
| 1822 int cp_size = cp->length(); | |
| 1823 check_property( | |
| 1824 valid_cp_range(name_index, cp_size) && | |
| 1825 cp->tag_at(name_index).is_utf8(), | |
| 1826 "Illegal constant pool index %u for method name in class file %s", | |
| 1827 name_index, CHECK_(nullHandle)); | |
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1828 Symbol* name = cp->symbol_at(name_index); |
| 0 | 1829 verify_legal_method_name(name, CHECK_(nullHandle)); |
| 1830 | |
| 1831 u2 signature_index = cfs->get_u2_fast(); | |
| 1832 guarantee_property( | |
| 1833 valid_cp_range(signature_index, cp_size) && | |
| 1834 cp->tag_at(signature_index).is_utf8(), | |
| 1835 "Illegal constant pool index %u for method signature in class file %s", | |
| 1836 signature_index, CHECK_(nullHandle)); | |
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1837 Symbol* signature = cp->symbol_at(signature_index); |
| 0 | 1838 |
| 1839 AccessFlags access_flags; | |
| 1840 if (name == vmSymbols::class_initializer_name()) { | |
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1841 // We ignore the other access flags for a valid class initializer. |
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1842 // (JVM Spec 2nd ed., chapter 4.6) |
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1843 if (_major_version < 51) { // backward compatibility |
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1844 flags = JVM_ACC_STATIC; |
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1845 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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1846 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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1847 } |
| 0 | 1848 } else { |
| 1849 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
| 1850 } | |
| 1851 | |
| 1852 int args_size = -1; // only used when _need_verify is true | |
| 1853 if (_need_verify) { | |
| 1854 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
| 1855 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
| 1856 if (args_size > MAX_ARGS_SIZE) { | |
| 1857 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
| 1858 } | |
| 1859 } | |
| 1860 | |
| 1861 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
| 1862 | |
| 1863 // Default values for code and exceptions attribute elements | |
| 1864 u2 max_stack = 0; | |
| 1865 u2 max_locals = 0; | |
| 1866 u4 code_length = 0; | |
| 1867 u1* code_start = 0; | |
| 1868 u2 exception_table_length = 0; | |
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1869 u2* exception_table_start = NULL; |
| 0 | 1870 typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array()); |
| 1871 u2 checked_exceptions_length = 0; | |
| 1872 u2* checked_exceptions_start = NULL; | |
| 1873 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
| 1874 int linenumber_table_length = 0; | |
| 1875 int total_lvt_length = 0; | |
| 1876 u2 lvt_cnt = 0; | |
| 1877 u2 lvtt_cnt = 0; | |
| 1878 bool lvt_allocated = false; | |
| 1879 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
| 1880 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
| 1881 u2* localvariable_table_length; | |
| 1882 u2** localvariable_table_start; | |
| 1883 u2* localvariable_type_table_length; | |
| 1884 u2** localvariable_type_table_start; | |
| 1885 bool parsed_code_attribute = false; | |
| 1886 bool parsed_checked_exceptions_attribute = false; | |
| 1887 bool parsed_stackmap_attribute = false; | |
| 1888 // stackmap attribute - JDK1.5 | |
| 1889 typeArrayHandle stackmap_data; | |
| 1890 u2 generic_signature_index = 0; | |
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1891 MethodAnnotationCollector parsed_annotations; |
| 0 | 1892 u1* runtime_visible_annotations = NULL; |
| 1893 int runtime_visible_annotations_length = 0; | |
| 1894 u1* runtime_invisible_annotations = NULL; | |
| 1895 int runtime_invisible_annotations_length = 0; | |
| 1896 u1* runtime_visible_parameter_annotations = NULL; | |
| 1897 int runtime_visible_parameter_annotations_length = 0; | |
| 1898 u1* runtime_invisible_parameter_annotations = NULL; | |
| 1899 int runtime_invisible_parameter_annotations_length = 0; | |
| 1900 u1* annotation_default = NULL; | |
| 1901 int annotation_default_length = 0; | |
| 1902 | |
| 1903 // Parse code and exceptions attribute | |
| 1904 u2 method_attributes_count = cfs->get_u2_fast(); | |
| 1905 while (method_attributes_count--) { | |
| 1906 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
| 1907 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
| 1908 u4 method_attribute_length = cfs->get_u4_fast(); | |
| 1909 check_property( | |
| 1910 valid_cp_range(method_attribute_name_index, cp_size) && | |
| 1911 cp->tag_at(method_attribute_name_index).is_utf8(), | |
| 1912 "Invalid method attribute name index %u in class file %s", | |
| 1913 method_attribute_name_index, CHECK_(nullHandle)); | |
| 1914 | |
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1915 Symbol* method_attribute_name = cp->symbol_at(method_attribute_name_index); |
| 0 | 1916 if (method_attribute_name == vmSymbols::tag_code()) { |
| 1917 // Parse Code attribute | |
| 1918 if (_need_verify) { | |
| 1919 guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(), | |
| 1920 "Code attribute in native or abstract methods in class file %s", | |
| 1921 CHECK_(nullHandle)); | |
| 1922 } | |
| 1923 if (parsed_code_attribute) { | |
| 1924 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
| 1925 } | |
| 1926 parsed_code_attribute = true; | |
| 1927 | |
| 1928 // Stack size, locals size, and code size | |
| 1929 if (_major_version == 45 && _minor_version <= 2) { | |
| 1930 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
| 1931 max_stack = cfs->get_u1_fast(); | |
| 1932 max_locals = cfs->get_u1_fast(); | |
| 1933 code_length = cfs->get_u2_fast(); | |
| 1934 } else { | |
| 1935 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
| 1936 max_stack = cfs->get_u2_fast(); | |
| 1937 max_locals = cfs->get_u2_fast(); | |
| 1938 code_length = cfs->get_u4_fast(); | |
| 1939 } | |
| 1940 if (_need_verify) { | |
| 1941 guarantee_property(args_size <= max_locals, | |
| 1942 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
| 1943 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
| 1944 "Invalid method Code length %u in class file %s", | |
| 1945 code_length, CHECK_(nullHandle)); | |
| 1946 } | |
| 1947 // Code pointer | |
| 1948 code_start = cfs->get_u1_buffer(); | |
| 1949 assert(code_start != NULL, "null code start"); | |
| 1950 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
| 1951 cfs->skip_u1_fast(code_length); | |
| 1952 | |
| 1953 // Exception handler table | |
| 1954 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
| 1955 exception_table_length = cfs->get_u2_fast(); | |
| 1956 if (exception_table_length > 0) { | |
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1957 exception_table_start = |
| 0 | 1958 parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle)); |
| 1959 } | |
| 1960 | |
| 1961 // Parse additional attributes in code attribute | |
| 1962 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
| 1963 u2 code_attributes_count = cfs->get_u2_fast(); | |
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1964 |
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1965 unsigned int calculated_attribute_length = 0; |
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1966 |
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1967 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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1968 calculated_attribute_length = |
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1969 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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1970 } else { |
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1971 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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1972 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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1973 } |
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1974 calculated_attribute_length += |
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1975 code_length + |
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1976 sizeof(exception_table_length) + |
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1977 sizeof(code_attributes_count) + |
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1978 exception_table_length * |
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1979 ( sizeof(u2) + // start_pc |
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1980 sizeof(u2) + // end_pc |
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1981 sizeof(u2) + // handler_pc |
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1982 sizeof(u2) ); // catch_type_index |
| 0 | 1983 |
| 1984 while (code_attributes_count--) { | |
| 1985 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
| 1986 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
| 1987 u4 code_attribute_length = cfs->get_u4_fast(); | |
| 1988 calculated_attribute_length += code_attribute_length + | |
| 1989 sizeof(code_attribute_name_index) + | |
| 1990 sizeof(code_attribute_length); | |
| 1991 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
| 1992 cp->tag_at(code_attribute_name_index).is_utf8(), | |
| 1993 "Invalid code attribute name index %u in class file %s", | |
| 1994 code_attribute_name_index, | |
| 1995 CHECK_(nullHandle)); | |
| 1996 if (LoadLineNumberTables && | |
| 1997 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
| 1998 // Parse and compress line number table | |
| 1999 parse_linenumber_table(code_attribute_length, code_length, | |
| 2000 &linenumber_table, CHECK_(nullHandle)); | |
| 2001 | |
| 2002 } else if (LoadLocalVariableTables && | |
| 2003 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
| 2004 // Parse local variable table | |
| 2005 if (!lvt_allocated) { | |
| 2006 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2007 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2008 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2009 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2010 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2011 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2012 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2013 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2014 lvt_allocated = true; | |
| 2015 } | |
| 2016 if (lvt_cnt == max_lvt_cnt) { | |
| 2017 max_lvt_cnt <<= 1; | |
| 2018 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
| 2019 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
| 2020 } | |
| 2021 localvariable_table_start[lvt_cnt] = | |
| 2022 parse_localvariable_table(code_length, | |
| 2023 max_locals, | |
| 2024 code_attribute_length, | |
| 2025 cp, | |
| 2026 &localvariable_table_length[lvt_cnt], | |
| 2027 false, // is not LVTT | |
| 2028 CHECK_(nullHandle)); | |
| 2029 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
| 2030 lvt_cnt++; | |
| 2031 } else if (LoadLocalVariableTypeTables && | |
| 2032 _major_version >= JAVA_1_5_VERSION && | |
| 2033 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
| 2034 if (!lvt_allocated) { | |
| 2035 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2036 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2037 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2038 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2039 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2040 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
| 2041 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2042 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
| 2043 lvt_allocated = true; | |
| 2044 } | |
| 2045 // Parse local variable type table | |
| 2046 if (lvtt_cnt == max_lvtt_cnt) { | |
| 2047 max_lvtt_cnt <<= 1; | |
| 2048 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
| 2049 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
| 2050 } | |
| 2051 localvariable_type_table_start[lvtt_cnt] = | |
| 2052 parse_localvariable_table(code_length, | |
| 2053 max_locals, | |
| 2054 code_attribute_length, | |
| 2055 cp, | |
| 2056 &localvariable_type_table_length[lvtt_cnt], | |
| 2057 true, // is LVTT | |
| 2058 CHECK_(nullHandle)); | |
| 2059 lvtt_cnt++; | |
| 2060 } else if (UseSplitVerifier && | |
| 2061 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
| 2062 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
| 2063 // Stack map is only needed by the new verifier in JDK1.5. | |
| 2064 if (parsed_stackmap_attribute) { | |
| 2065 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
| 2066 } | |
| 2067 typeArrayOop sm = | |
| 2068 parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); | |
| 2069 stackmap_data = typeArrayHandle(THREAD, sm); | |
| 2070 parsed_stackmap_attribute = true; | |
| 2071 } else { | |
| 2072 // Skip unknown attributes | |
| 2073 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
| 2074 } | |
| 2075 } | |
| 2076 // check method attribute length | |
| 2077 if (_need_verify) { | |
| 2078 guarantee_property(method_attribute_length == calculated_attribute_length, | |
| 2079 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
| 2080 } | |
| 2081 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
| 2082 // Parse Exceptions attribute | |
| 2083 if (parsed_checked_exceptions_attribute) { | |
| 2084 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
| 2085 } | |
| 2086 parsed_checked_exceptions_attribute = true; | |
| 2087 checked_exceptions_start = | |
| 2088 parse_checked_exceptions(&checked_exceptions_length, | |
| 2089 method_attribute_length, | |
| 2090 cp, CHECK_(nullHandle)); | |
| 2091 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { | |
| 2092 if (method_attribute_length != 0) { | |
| 2093 classfile_parse_error( | |
| 2094 "Invalid Synthetic method attribute length %u in class file %s", | |
| 2095 method_attribute_length, CHECK_(nullHandle)); | |
| 2096 } | |
| 2097 // Should we check that there hasn't already been a synthetic attribute? | |
| 2098 access_flags.set_is_synthetic(); | |
| 2099 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
| 2100 if (method_attribute_length != 0) { | |
| 2101 classfile_parse_error( | |
| 2102 "Invalid Deprecated method attribute length %u in class file %s", | |
| 2103 method_attribute_length, CHECK_(nullHandle)); | |
| 2104 } | |
| 2105 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 2106 if (method_attribute_name == vmSymbols::tag_signature()) { | |
| 2107 if (method_attribute_length != 2) { | |
| 2108 classfile_parse_error( | |
| 2109 "Invalid Signature attribute length %u in class file %s", | |
| 2110 method_attribute_length, CHECK_(nullHandle)); | |
| 2111 } | |
| 2112 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
| 2113 generic_signature_index = cfs->get_u2_fast(); | |
| 2114 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
| 2115 runtime_visible_annotations_length = method_attribute_length; | |
| 2116 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 2117 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
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2118 parse_annotations(runtime_visible_annotations, runtime_visible_annotations_length, cp, &parsed_annotations, CHECK_(nullHandle)); |
| 0 | 2119 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
| 2120 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 2121 runtime_invisible_annotations_length = method_attribute_length; | |
| 2122 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 2123 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 2124 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
| 2125 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
| 2126 runtime_visible_parameter_annotations_length = method_attribute_length; | |
| 2127 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
| 2128 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
| 2129 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
| 2130 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
| 2131 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
| 2132 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
| 2133 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
| 2134 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
| 2135 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
| 2136 annotation_default_length = method_attribute_length; | |
| 2137 annotation_default = cfs->get_u1_buffer(); | |
| 2138 assert(annotation_default != NULL, "null annotation default"); | |
| 2139 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
| 2140 } else { | |
| 2141 // Skip unknown attributes | |
| 2142 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
| 2143 } | |
| 2144 } else { | |
| 2145 // Skip unknown attributes | |
| 2146 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
| 2147 } | |
| 2148 } | |
| 2149 | |
| 2150 if (linenumber_table != NULL) { | |
| 2151 linenumber_table->write_terminator(); | |
| 2152 linenumber_table_length = linenumber_table->position(); | |
| 2153 } | |
| 2154 | |
| 2155 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
| 2156 if (_need_verify) { | |
| 2157 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
| 2158 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
| 2159 } | |
| 2160 | |
| 2161 // All sizing information for a methodOop is finally available, now create it | |
|
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2162 methodOop m_oop = oopFactory::new_method(code_length, access_flags, |
|
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2163 linenumber_table_length, |
|
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|
2164 total_lvt_length, |
|
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|
2165 exception_table_length, |
|
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|
2166 checked_exceptions_length, |
|
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|
2167 oopDesc::IsSafeConc, |
|
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|
2168 CHECK_(nullHandle)); |
| 0 | 2169 methodHandle m (THREAD, m_oop); |
| 2170 | |
| 2171 ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize); | |
| 2172 | |
| 2173 // Fill in information from fixed part (access_flags already set) | |
| 2174 m->set_constants(cp()); | |
| 2175 m->set_name_index(name_index); | |
| 2176 m->set_signature_index(signature_index); | |
| 2177 m->set_generic_signature_index(generic_signature_index); | |
| 2178 #ifdef CC_INTERP | |
| 2179 // hmm is there a gc issue here?? | |
| 2180 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
| 2181 m->set_result_index(rtf.type()); | |
| 2182 #endif | |
| 2183 | |
| 2184 if (args_size >= 0) { | |
| 2185 m->set_size_of_parameters(args_size); | |
| 2186 } else { | |
| 2187 m->compute_size_of_parameters(THREAD); | |
| 2188 } | |
| 2189 #ifdef ASSERT | |
| 2190 if (args_size >= 0) { | |
| 2191 m->compute_size_of_parameters(THREAD); | |
| 2192 assert(args_size == m->size_of_parameters(), ""); | |
| 2193 } | |
| 2194 #endif | |
| 2195 | |
| 2196 // Fill in code attribute information | |
| 2197 m->set_max_stack(max_stack); | |
| 2198 m->set_max_locals(max_locals); | |
| 2199 | |
| 2200 /** | |
|
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|
2201 * The stackmap_data field is the flag used to indicate |
| 0 | 2202 * that the methodOop and it's associated constMethodOop are partially |
| 2203 * initialized and thus are exempt from pre/post GC verification. Once | |
| 2204 * the field is set, the oops are considered fully initialized so make | |
| 2205 * sure that the oops can pass verification when this field is set. | |
| 2206 */ | |
|
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|
2207 m->constMethod()->set_stackmap_data(stackmap_data()); |
| 0 | 2208 |
| 2209 // Copy byte codes | |
|
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|
2210 m->set_code(code_start); |
| 0 | 2211 |
| 2212 // Copy line number table | |
| 2213 if (linenumber_table != NULL) { | |
| 2214 memcpy(m->compressed_linenumber_table(), | |
| 2215 linenumber_table->buffer(), linenumber_table_length); | |
| 2216 } | |
| 2217 | |
|
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|
2218 // Copy exception table |
|
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|
2219 if (exception_table_length > 0) { |
|
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|
2220 int size = |
|
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|
2221 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
|
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|
2222 copy_u2_with_conversion((u2*) m->exception_table_start(), |
|
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|
2223 exception_table_start, size); |
|
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|
2224 } |
|
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|
2225 |
| 0 | 2226 // Copy checked exceptions |
| 2227 if (checked_exceptions_length > 0) { | |
| 2228 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
| 2229 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
| 2230 } | |
| 2231 | |
| 2232 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
| 2233 * | |
| 2234 * Rules for LVT's and LVTT's are: | |
| 2235 * - There can be any number of LVT's and LVTT's. | |
| 2236 * - If there are n LVT's, it is the same as if there was just | |
| 2237 * one LVT containing all the entries from the n LVT's. | |
| 2238 * - There may be no more than one LVT entry per local variable. | |
| 2239 * Two LVT entries are 'equal' if these fields are the same: | |
| 2240 * start_pc, length, name, slot | |
| 2241 * - There may be no more than one LVTT entry per each LVT entry. | |
| 2242 * Each LVTT entry has to match some LVT entry. | |
| 2243 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
| 2244 */ | |
| 2245 if (total_lvt_length > 0) { | |
| 2246 int tbl_no, idx; | |
| 2247 | |
| 2248 promoted_flags->set_has_localvariable_table(); | |
| 2249 | |
| 2250 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
| 2251 initialize_hashtable(lvt_Hash); | |
| 2252 | |
| 2253 // To fill LocalVariableTable in | |
| 2254 Classfile_LVT_Element* cf_lvt; | |
| 2255 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
| 2256 | |
| 2257 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
| 2258 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
| 2259 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
| 2260 copy_lvt_element(&cf_lvt[idx], lvt); | |
| 2261 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
| 2262 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
| 2263 && _need_verify | |
| 2264 && _major_version >= JAVA_1_5_VERSION ) { | |
| 2265 clear_hashtable(lvt_Hash); | |
| 2266 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
| 2267 "entry for '%s' in class file %s", | |
| 2268 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
| 2269 CHECK_(nullHandle)); | |
| 2270 } | |
| 2271 } | |
| 2272 } | |
| 2273 | |
| 2274 // To merge LocalVariableTable and LocalVariableTypeTable | |
| 2275 Classfile_LVT_Element* cf_lvtt; | |
| 2276 LocalVariableTableElement lvtt_elem; | |
| 2277 | |
| 2278 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
| 2279 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
| 2280 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
| 2281 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
| 2282 int index = hash(&lvtt_elem); | |
| 2283 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
| 2284 if (entry == NULL) { | |
| 2285 if (_need_verify) { | |
| 2286 clear_hashtable(lvt_Hash); | |
| 2287 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
| 2288 "does not match any LVT entry", | |
| 2289 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
| 2290 CHECK_(nullHandle)); | |
| 2291 } | |
| 2292 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
| 2293 clear_hashtable(lvt_Hash); | |
| 2294 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
| 2295 "entry for '%s' in class file %s", | |
| 2296 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
| 2297 CHECK_(nullHandle)); | |
| 2298 } else { | |
| 2299 // to add generic signatures into LocalVariableTable | |
| 2300 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
| 2301 } | |
| 2302 } | |
| 2303 } | |
| 2304 clear_hashtable(lvt_Hash); | |
| 2305 } | |
| 2306 | |
|
6222
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|
2307 if (parsed_annotations.has_any_annotations()) |
|
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diff
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|
2308 parsed_annotations.apply_to(m); |
| 0 | 2309 *method_annotations = assemble_annotations(runtime_visible_annotations, |
| 2310 runtime_visible_annotations_length, | |
| 2311 runtime_invisible_annotations, | |
| 2312 runtime_invisible_annotations_length, | |
| 2313 CHECK_(nullHandle)); | |
| 2314 *method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations, | |
| 2315 runtime_visible_parameter_annotations_length, | |
| 2316 runtime_invisible_parameter_annotations, | |
| 2317 runtime_invisible_parameter_annotations_length, | |
| 2318 CHECK_(nullHandle)); | |
| 2319 *method_default_annotations = assemble_annotations(annotation_default, | |
| 2320 annotation_default_length, | |
| 2321 NULL, | |
| 2322 0, | |
| 2323 CHECK_(nullHandle)); | |
| 2324 | |
|
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2325 if (name == vmSymbols::finalize_method_name() && |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
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|
2326 signature == vmSymbols::void_method_signature()) { |
| 0 | 2327 if (m->is_empty_method()) { |
| 2328 _has_empty_finalizer = true; | |
| 2329 } else { | |
| 2330 _has_finalizer = true; | |
| 2331 } | |
| 2332 } | |
|
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|
2333 if (name == vmSymbols::object_initializer_name() && |
|
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
2334 signature == vmSymbols::void_method_signature() && |
| 0 | 2335 m->is_vanilla_constructor()) { |
| 2336 _has_vanilla_constructor = true; | |
| 2337 } | |
| 2338 | |
|
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
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2376
diff
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|
2339 if (EnableInvokeDynamic && (m->is_method_handle_invoke() || |
|
1507
cd5dbf694d45
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jrose
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1366
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changeset
|
2340 m->is_method_handle_adapter())) { |
| 710 | 2341 THROW_MSG_(vmSymbols::java_lang_VirtualMachineError(), |
| 2342 "Method handle invokers must be defined internally to the VM", nullHandle); | |
| 2343 } | |
| 2344 | |
| 0 | 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 | |
| 2353 objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface, | |
| 2354 AccessFlags* promoted_flags, | |
| 2355 bool* has_final_method, | |
| 2356 objArrayOop* methods_annotations_oop, | |
| 2357 objArrayOop* methods_parameter_annotations_oop, | |
| 2358 objArrayOop* methods_default_annotations_oop, | |
| 2359 TRAPS) { | |
| 2360 ClassFileStream* cfs = stream(); | |
| 2361 objArrayHandle nullHandle; | |
| 2362 typeArrayHandle method_annotations; | |
| 2363 typeArrayHandle method_parameter_annotations; | |
| 2364 typeArrayHandle method_default_annotations; | |
| 2365 cfs->guarantee_more(2, CHECK_(nullHandle)); // length | |
| 2366 u2 length = cfs->get_u2_fast(); | |
| 2367 if (length == 0) { | |
| 2368 return objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
| 2369 } else { | |
| 2370 objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
| 2371 objArrayHandle methods(THREAD, m); | |
| 2372 HandleMark hm(THREAD); | |
| 2373 objArrayHandle methods_annotations; | |
| 2374 objArrayHandle methods_parameter_annotations; | |
| 2375 objArrayHandle methods_default_annotations; | |
| 2376 for (int index = 0; index < length; index++) { | |
| 2377 methodHandle method = parse_method(cp, is_interface, | |
| 2378 promoted_flags, | |
| 2379 &method_annotations, | |
| 2380 &method_parameter_annotations, | |
| 2381 &method_default_annotations, | |
| 2382 CHECK_(nullHandle)); | |
| 2383 if (method->is_final()) { | |
| 2384 *has_final_method = true; | |
| 2385 } | |
| 2386 methods->obj_at_put(index, method()); | |
| 2387 if (method_annotations.not_null()) { | |
| 2388 if (methods_annotations.is_null()) { | |
| 2389 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
| 2390 methods_annotations = objArrayHandle(THREAD, md); | |
| 2391 } | |
| 2392 methods_annotations->obj_at_put(index, method_annotations()); | |
| 2393 } | |
| 2394 if (method_parameter_annotations.not_null()) { | |
| 2395 if (methods_parameter_annotations.is_null()) { | |
| 2396 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
| 2397 methods_parameter_annotations = objArrayHandle(THREAD, md); | |
| 2398 } | |
| 2399 methods_parameter_annotations->obj_at_put(index, method_parameter_annotations()); | |
| 2400 } | |
| 2401 if (method_default_annotations.not_null()) { | |
| 2402 if (methods_default_annotations.is_null()) { | |
| 2403 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
| 2404 methods_default_annotations = objArrayHandle(THREAD, md); | |
| 2405 } | |
| 2406 methods_default_annotations->obj_at_put(index, method_default_annotations()); | |
| 2407 } | |
| 2408 } | |
| 2409 if (_need_verify && length > 1) { | |
| 2410 // Check duplicated methods | |
| 2411 ResourceMark rm(THREAD); | |
| 2412 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
| 2413 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
| 2414 initialize_hashtable(names_and_sigs); | |
| 2415 bool dup = false; | |
| 2416 { | |
| 2417 debug_only(No_Safepoint_Verifier nsv;) | |
| 2418 for (int i = 0; i < length; i++) { | |
| 2419 methodOop m = (methodOop)methods->obj_at(i); | |
| 2420 // If no duplicates, add name/signature in hashtable names_and_sigs. | |
| 2421 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
| 2422 dup = true; | |
| 2423 break; | |
| 2424 } | |
| 2425 } | |
| 2426 } | |
| 2427 if (dup) { | |
| 2428 classfile_parse_error("Duplicate method name&signature in class file %s", | |
| 2429 CHECK_(nullHandle)); | |
| 2430 } | |
| 2431 } | |
| 2432 | |
| 2433 *methods_annotations_oop = methods_annotations(); | |
| 2434 *methods_parameter_annotations_oop = methods_parameter_annotations(); | |
| 2435 *methods_default_annotations_oop = methods_default_annotations(); | |
| 2436 | |
| 2437 return methods; | |
| 2438 } | |
| 2439 } | |
| 2440 | |
| 2441 | |
| 2442 typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods, | |
| 2443 objArrayHandle methods_annotations, | |
| 2444 objArrayHandle methods_parameter_annotations, | |
| 2445 objArrayHandle methods_default_annotations, | |
| 2446 TRAPS) { | |
| 2447 typeArrayHandle nullHandle; | |
| 2448 int length = methods()->length(); | |
|
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|
2449 // If JVMTI original method ordering or sharing is enabled we have to |
| 0 | 2450 // remember the original class file ordering. |
| 2451 // We temporarily use the vtable_index field in the methodOop to store the | |
| 2452 // class file index, so we can read in after calling qsort. | |
|
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|
2453 // Put the method ordering in the shared archive. |
|
8ce625481709
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|
2454 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
| 0 | 2455 for (int index = 0; index < length; index++) { |
| 2456 methodOop m = methodOop(methods->obj_at(index)); | |
| 2457 assert(!m->valid_vtable_index(), "vtable index should not be set"); | |
| 2458 m->set_vtable_index(index); | |
| 2459 } | |
| 2460 } | |
| 2461 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
|
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|
2462 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
| 0 | 2463 methodOopDesc::sort_methods(methods(), |
| 2464 methods_annotations(), | |
| 2465 methods_parameter_annotations(), | |
| 2466 methods_default_annotations()); | |
| 2467 | |
|
3245
8ce625481709
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|
2468 // If JVMTI original method ordering or sharing is enabled construct int |
|
8ce625481709
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diff
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|
2469 // array remembering the original ordering |
|
8ce625481709
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|
2470 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
| 0 | 2471 typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle)); |
| 2472 typeArrayHandle method_ordering(THREAD, new_ordering); | |
| 2473 for (int index = 0; index < length; index++) { | |
| 2474 methodOop m = methodOop(methods->obj_at(index)); | |
| 2475 int old_index = m->vtable_index(); | |
| 2476 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
| 2477 method_ordering->int_at_put(index, old_index); | |
| 2478 m->set_vtable_index(methodOopDesc::invalid_vtable_index); | |
| 2479 } | |
| 2480 return method_ordering; | |
| 2481 } else { | |
| 2482 return typeArrayHandle(THREAD, Universe::the_empty_int_array()); | |
| 2483 } | |
| 2484 } | |
| 2485 | |
| 2486 | |
|
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|
2487 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS) { |
| 0 | 2488 ClassFileStream* cfs = stream(); |
| 2489 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
| 2490 u2 sourcefile_index = cfs->get_u2_fast(); | |
| 2491 check_property( | |
| 2492 valid_cp_range(sourcefile_index, cp->length()) && | |
| 2493 cp->tag_at(sourcefile_index).is_utf8(), | |
| 2494 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
| 2495 sourcefile_index, CHECK); | |
|
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|
2496 set_class_sourcefile(cp->symbol_at(sourcefile_index)); |
| 0 | 2497 } |
| 2498 | |
| 2499 | |
| 2500 | |
| 2501 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
| 2502 int length, TRAPS) { | |
| 2503 ClassFileStream* cfs = stream(); | |
| 2504 u1* sde_buffer = cfs->get_u1_buffer(); | |
| 2505 assert(sde_buffer != NULL, "null sde buffer"); | |
| 2506 | |
| 2507 // Don't bother storing it if there is no way to retrieve it | |
| 2508 if (JvmtiExport::can_get_source_debug_extension()) { | |
| 6226 | 2509 assert((length+1) > length, "Overflow checking"); |
| 2510 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
| 2511 for (int i = 0; i < length; i++) { | |
| 2512 sde[i] = sde_buffer[i]; | |
| 2513 } | |
| 2514 sde[length] = '\0'; | |
| 2515 set_class_sde_buffer((char*)sde, length); | |
| 0 | 2516 } |
| 2517 // Got utf8 string, set stream position forward | |
| 2518 cfs->skip_u1(length, CHECK); | |
| 2519 } | |
| 2520 | |
| 2521 | |
| 2522 // Inner classes can be static, private or protected (classic VM does this) | |
| 2523 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
| 2524 | |
| 2525 // Return number of classes in the inner classes attribute table | |
|
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|
2526 u2 ClassFileParser::parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
|
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|
2527 bool parsed_enclosingmethod_attribute, |
|
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|
2528 u2 enclosing_method_class_index, |
|
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|
2529 u2 enclosing_method_method_index, |
|
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|
2530 constantPoolHandle cp, |
|
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|
2531 TRAPS) { |
| 0 | 2532 ClassFileStream* cfs = stream(); |
|
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|
2533 u1* current_mark = cfs->current(); |
|
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|
2534 u2 length = 0; |
|
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|
2535 if (inner_classes_attribute_start != NULL) { |
|
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|
2536 cfs->set_current(inner_classes_attribute_start); |
|
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|
2537 cfs->guarantee_more(2, CHECK_0); // length |
|
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|
2538 length = cfs->get_u2_fast(); |
|
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|
2539 } |
|
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|
2540 |
|
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|
2541 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
|
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|
2542 // method data: |
|
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|
2543 // [inner_class_info_index, |
|
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|
2544 // outer_class_info_index, |
|
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|
2545 // inner_name_index, |
|
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|
2546 // inner_class_access_flags, |
|
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|
2547 // ... |
|
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|
2548 // enclosing_method_class_index, |
|
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|
2549 // enclosing_method_method_index] |
|
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|
2550 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
|
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|
2551 typeArrayOop ic = oopFactory::new_permanent_shortArray(size, CHECK_0); |
| 0 | 2552 typeArrayHandle inner_classes(THREAD, ic); |
| 2553 int index = 0; | |
| 2554 int cp_size = cp->length(); | |
| 2555 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
| 2556 for (int n = 0; n < length; n++) { | |
| 2557 // Inner class index | |
| 2558 u2 inner_class_info_index = cfs->get_u2_fast(); | |
| 2559 check_property( | |
| 2560 inner_class_info_index == 0 || | |
| 2561 (valid_cp_range(inner_class_info_index, cp_size) && | |
|
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diff
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|
2562 is_klass_reference(cp, inner_class_info_index)), |
| 0 | 2563 "inner_class_info_index %u has bad constant type in class file %s", |
| 2564 inner_class_info_index, CHECK_0); | |
| 2565 // Outer class index | |
| 2566 u2 outer_class_info_index = cfs->get_u2_fast(); | |
| 2567 check_property( | |
| 2568 outer_class_info_index == 0 || | |
| 2569 (valid_cp_range(outer_class_info_index, cp_size) && | |
|
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|
2570 is_klass_reference(cp, outer_class_info_index)), |
| 0 | 2571 "outer_class_info_index %u has bad constant type in class file %s", |
| 2572 outer_class_info_index, CHECK_0); | |
| 2573 // Inner class name | |
| 2574 u2 inner_name_index = cfs->get_u2_fast(); | |
| 2575 check_property( | |
| 2576 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
| 2577 cp->tag_at(inner_name_index).is_utf8()), | |
| 2578 "inner_name_index %u has bad constant type in class file %s", | |
| 2579 inner_name_index, CHECK_0); | |
| 2580 if (_need_verify) { | |
| 2581 guarantee_property(inner_class_info_index != outer_class_info_index, | |
| 2582 "Class is both outer and inner class in class file %s", CHECK_0); | |
| 2583 } | |
| 2584 // Access flags | |
| 2585 AccessFlags inner_access_flags; | |
| 2586 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
| 2587 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
| 2588 // Set abstract bit for old class files for backward compatibility | |
| 2589 flags |= JVM_ACC_ABSTRACT; | |
| 2590 } | |
| 2591 verify_legal_class_modifiers(flags, CHECK_0); | |
| 2592 inner_access_flags.set_flags(flags); | |
| 2593 | |
| 2594 inner_classes->short_at_put(index++, inner_class_info_index); | |
| 2595 inner_classes->short_at_put(index++, outer_class_info_index); | |
| 2596 inner_classes->short_at_put(index++, inner_name_index); | |
| 2597 inner_classes->short_at_put(index++, inner_access_flags.as_short()); | |
| 2598 } | |
| 2599 | |
| 2600 // 4347400: make sure there's no duplicate entry in the classes array | |
| 2601 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
|
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|
2602 for(int i = 0; i < length * 4; i += 4) { |
|
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|
2603 for(int j = i + 4; j < length * 4; j += 4) { |
| 0 | 2604 guarantee_property((inner_classes->ushort_at(i) != inner_classes->ushort_at(j) || |
| 2605 inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) || | |
| 2606 inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) || | |
| 2607 inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)), | |
| 2608 "Duplicate entry in InnerClasses in class file %s", | |
| 2609 CHECK_0); | |
| 2610 } | |
| 2611 } | |
| 2612 } | |
| 2613 | |
|
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|
2614 // Set EnclosingMethod class and method indexes. |
|
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|
2615 if (parsed_enclosingmethod_attribute) { |
|
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|
2616 inner_classes->short_at_put(index++, enclosing_method_class_index); |
|
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|
2617 inner_classes->short_at_put(index++, enclosing_method_method_index); |
|
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diff
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|
2618 } |
|
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diff
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|
2619 assert(index == size, "wrong size"); |
|
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2620 |
| 0 | 2621 // Update instanceKlass with inner class info. |
|
6222
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|
2622 set_class_inner_classes(inner_classes); |
|
5967
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|
2623 |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
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|
2624 // Restore buffer's current position. |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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4755
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|
2625 cfs->set_current(current_mark); |
|
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diff
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|
2626 |
| 0 | 2627 return length; |
| 2628 } | |
| 2629 | |
|
6222
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|
2630 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS) { |
|
6d8f36bcef55
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6100
diff
changeset
|
2631 set_class_synthetic_flag(true); |
| 0 | 2632 } |
| 2633 | |
|
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|
2634 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS) { |
| 0 | 2635 ClassFileStream* cfs = stream(); |
| 2636 u2 signature_index = cfs->get_u2(CHECK); | |
| 2637 check_property( | |
| 2638 valid_cp_range(signature_index, cp->length()) && | |
| 2639 cp->tag_at(signature_index).is_utf8(), | |
| 2640 "Invalid constant pool index %u in Signature attribute in class file %s", | |
| 2641 signature_index, CHECK); | |
|
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|
2642 set_class_generic_signature(cp->symbol_at(signature_index)); |
| 0 | 2643 } |
| 2644 | |
|
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|
2645 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(constantPoolHandle cp, |
|
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
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|
2646 u4 attribute_byte_length, TRAPS) { |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
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|
2647 ClassFileStream* cfs = stream(); |
|
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
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|
2648 u1* current_start = cfs->current(); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2649 |
|
dad31fc330cd
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jrose
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1972
diff
changeset
|
2650 cfs->guarantee_more(2, CHECK); // length |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2651 int attribute_array_length = cfs->get_u2_fast(); |
|
dad31fc330cd
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jrose
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1972
diff
changeset
|
2652 |
|
dad31fc330cd
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jrose
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diff
changeset
|
2653 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
|
dad31fc330cd
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jrose
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diff
changeset
|
2654 "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
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1972
diff
changeset
|
2655 CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2656 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2657 // The attribute contains a counted array of counted tuples of shorts, |
|
dad31fc330cd
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jrose
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1972
diff
changeset
|
2658 // represending bootstrap specifiers: |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2659 // 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
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diff
changeset
|
2660 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
|
dad31fc330cd
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jrose
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diff
changeset
|
2661 // operand_count = number of shorts in attr, except for leading length |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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diff
changeset
|
2662 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2663 // The attribute is copied into a short[] array. |
|
dad31fc330cd
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jrose
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1972
diff
changeset
|
2664 // The array begins with a series of short[2] pairs, one for each tuple. |
|
dad31fc330cd
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diff
changeset
|
2665 int index_size = (attribute_array_length * 2); |
|
dad31fc330cd
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diff
changeset
|
2666 |
|
dad31fc330cd
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jrose
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diff
changeset
|
2667 typeArrayOop operands_oop = oopFactory::new_permanent_intArray(index_size + operand_count, CHECK); |
|
dad31fc330cd
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jrose
parents:
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diff
changeset
|
2668 typeArrayHandle operands(THREAD, operands_oop); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2669 operands_oop = NULL; // tidy |
|
dad31fc330cd
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diff
changeset
|
2670 |
|
dad31fc330cd
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diff
changeset
|
2671 int operand_fill_index = index_size; |
|
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diff
changeset
|
2672 int cp_size = cp->length(); |
|
dad31fc330cd
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diff
changeset
|
2673 |
|
dad31fc330cd
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parents:
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diff
changeset
|
2674 for (int n = 0; n < attribute_array_length; n++) { |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2675 // Store a 32-bit offset into the header of the operand array. |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2676 assert(constantPoolOopDesc::operand_offset_at(operands(), n) == 0, ""); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2677 constantPoolOopDesc::operand_offset_at_put(operands(), n, operand_fill_index); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2678 |
|
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2679 // Read a bootstrap specifier. |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2680 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
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diff
changeset
|
2681 u2 bootstrap_method_index = cfs->get_u2_fast(); |
|
dad31fc330cd
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diff
changeset
|
2682 u2 argument_count = cfs->get_u2_fast(); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2683 check_property( |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2684 valid_cp_range(bootstrap_method_index, cp_size) && |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2685 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
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diff
changeset
|
2686 "bootstrap_method_index %u has bad constant type in class file %s", |
| 2085 | 2687 bootstrap_method_index, |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2688 CHECK); |
|
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
|
2689 operands->short_at_put(operand_fill_index++, bootstrap_method_index); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2690 operands->short_at_put(operand_fill_index++, argument_count); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2691 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2692 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
|
2693 for (int j = 0; j < argument_count; j++) { |
| 2085 | 2694 u2 argument_index = cfs->get_u2_fast(); |
|
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2695 check_property( |
| 2085 | 2696 valid_cp_range(argument_index, cp_size) && |
| 2697 cp->tag_at(argument_index).is_loadable_constant(), | |
|
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2698 "argument_index %u has bad constant type in class file %s", |
| 2085 | 2699 argument_index, |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2700 CHECK); |
| 2085 | 2701 operands->short_at_put(operand_fill_index++, argument_index); |
|
2011
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diff
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|
2702 } |
|
dad31fc330cd
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parents:
1972
diff
changeset
|
2703 } |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2704 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2705 assert(operand_fill_index == operands()->length(), "exact fill"); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2706 assert(constantPoolOopDesc::operand_array_length(operands()) == attribute_array_length, "correct decode"); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
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|
2707 |
|
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2708 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
|
2709 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
|
2710 "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
|
2711 CHECK); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2712 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2713 cp->set_operands(operands()); |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2714 } |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
1972
diff
changeset
|
2715 |
|
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2716 |
|
6222
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6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2717 void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2718 ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
2719 TRAPS) { |
| 0 | 2720 ClassFileStream* cfs = stream(); |
| 2721 // Set inner classes attribute to default sentinel | |
|
6222
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6711908: JVM needs direct access to some annotations
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parents:
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diff
changeset
|
2722 set_class_inner_classes(typeArrayHandle(THREAD, Universe::the_empty_short_array())); |
| 0 | 2723 cfs->guarantee_more(2, CHECK); // attributes_count |
| 2724 u2 attributes_count = cfs->get_u2_fast(); | |
| 2725 bool parsed_sourcefile_attribute = false; | |
| 2726 bool parsed_innerclasses_attribute = false; | |
| 2727 bool parsed_enclosingmethod_attribute = false; | |
|
2011
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2728 bool parsed_bootstrap_methods_attribute = false; |
| 0 | 2729 u1* runtime_visible_annotations = NULL; |
| 2730 int runtime_visible_annotations_length = 0; | |
| 2731 u1* runtime_invisible_annotations = NULL; | |
| 2732 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
|
2733 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
|
2734 u4 inner_classes_attribute_length = 0; |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4755
diff
changeset
|
2735 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
|
2736 u2 enclosing_method_method_index = 0; |
| 0 | 2737 // Iterate over attributes |
| 2738 while (attributes_count--) { | |
| 2739 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
| 2740 u2 attribute_name_index = cfs->get_u2_fast(); | |
| 2741 u4 attribute_length = cfs->get_u4_fast(); | |
| 2742 check_property( | |
| 2743 valid_cp_range(attribute_name_index, cp->length()) && | |
| 2744 cp->tag_at(attribute_name_index).is_utf8(), | |
| 2745 "Attribute name has bad constant pool index %u in class file %s", | |
| 2746 attribute_name_index, CHECK); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2747 Symbol* tag = cp->symbol_at(attribute_name_index); |
| 0 | 2748 if (tag == vmSymbols::tag_source_file()) { |
| 2749 // Check for SourceFile tag | |
| 2750 if (_need_verify) { | |
| 2751 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
| 2752 } | |
| 2753 if (parsed_sourcefile_attribute) { | |
| 2754 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
| 2755 } else { | |
| 2756 parsed_sourcefile_attribute = true; | |
| 2757 } | |
|
6222
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parents:
6100
diff
changeset
|
2758 parse_classfile_sourcefile_attribute(cp, CHECK); |
| 0 | 2759 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
| 2760 // Check for SourceDebugExtension tag | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2761 parse_classfile_source_debug_extension_attribute(cp, (int)attribute_length, CHECK); |
| 0 | 2762 } else if (tag == vmSymbols::tag_inner_classes()) { |
| 2763 // Check for InnerClasses tag | |
| 2764 if (parsed_innerclasses_attribute) { | |
| 2765 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
| 2766 } else { | |
| 2767 parsed_innerclasses_attribute = true; | |
| 2768 } | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2769 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
|
2770 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
|
2771 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
| 0 | 2772 } else if (tag == vmSymbols::tag_synthetic()) { |
| 2773 // Check for Synthetic tag | |
| 2774 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
| 2775 if (attribute_length != 0) { | |
| 2776 classfile_parse_error( | |
| 2777 "Invalid Synthetic classfile attribute length %u in class file %s", | |
| 2778 attribute_length, CHECK); | |
| 2779 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2780 parse_classfile_synthetic_attribute(cp, CHECK); |
| 0 | 2781 } else if (tag == vmSymbols::tag_deprecated()) { |
| 2782 // Check for Deprecatd tag - 4276120 | |
| 2783 if (attribute_length != 0) { | |
| 2784 classfile_parse_error( | |
| 2785 "Invalid Deprecated classfile attribute length %u in class file %s", | |
| 2786 attribute_length, CHECK); | |
| 2787 } | |
| 2788 } else if (_major_version >= JAVA_1_5_VERSION) { | |
| 2789 if (tag == vmSymbols::tag_signature()) { | |
| 2790 if (attribute_length != 2) { | |
| 2791 classfile_parse_error( | |
| 2792 "Wrong Signature attribute length %u in class file %s", | |
| 2793 attribute_length, CHECK); | |
| 2794 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2795 parse_classfile_signature_attribute(cp, CHECK); |
| 0 | 2796 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
| 2797 runtime_visible_annotations_length = attribute_length; | |
| 2798 runtime_visible_annotations = cfs->get_u1_buffer(); | |
| 2799 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2800 parse_annotations(runtime_visible_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2801 runtime_visible_annotations_length, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2802 cp, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2803 parsed_annotations, |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2804 CHECK); |
| 0 | 2805 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
| 2806 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
| 2807 runtime_invisible_annotations_length = attribute_length; | |
| 2808 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
| 2809 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
| 2810 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
| 2811 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
| 2812 if (parsed_enclosingmethod_attribute) { | |
| 2813 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
| 2814 } else { | |
| 2815 parsed_enclosingmethod_attribute = true; | |
| 2816 } | |
| 2817 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
|
2818 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
|
2819 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
|
2820 if (enclosing_method_class_index == 0) { |
| 0 | 2821 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
| 2822 } | |
| 2823 // 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
|
2824 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
|
2825 !is_klass_reference(cp, enclosing_method_class_index)) { |
| 0 | 2826 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
| 2827 } | |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2828 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
|
2829 (!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
|
2830 !cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
| 0 | 2831 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
| 2832 } | |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2833 } 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
|
2834 _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
|
2835 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
|
2836 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
|
2837 parsed_bootstrap_methods_attribute = true; |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2838 parse_classfile_bootstrap_methods_attribute(cp, attribute_length, CHECK); |
| 0 | 2839 } else { |
| 2840 // Unknown attribute | |
| 2841 cfs->skip_u1(attribute_length, CHECK); | |
| 2842 } | |
| 2843 } else { | |
| 2844 // Unknown attribute | |
| 2845 cfs->skip_u1(attribute_length, CHECK); | |
| 2846 } | |
| 2847 } | |
| 2848 typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations, | |
| 2849 runtime_visible_annotations_length, | |
| 2850 runtime_invisible_annotations, | |
| 2851 runtime_invisible_annotations_length, | |
| 2852 CHECK); | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2853 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
|
2854 |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2855 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
|
2856 u2 num_of_classes = parse_classfile_inner_classes_attribute( |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2857 inner_classes_attribute_start, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2858 parsed_innerclasses_attribute, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2859 enclosing_method_class_index, |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2860 enclosing_method_method_index, |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2861 cp, CHECK); |
|
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2862 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
|
2863 guarantee_property( |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2864 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
|
2865 "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
|
2866 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2867 } |
|
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2868 |
|
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2869 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
|
2870 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
|
2871 "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
|
2872 } |
| 0 | 2873 } |
| 2874 | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2875 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2876 if (_synthetic_flag) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2877 k->set_is_synthetic(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2878 if (_sourcefile != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2879 _sourcefile->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2880 k->set_source_file_name(_sourcefile); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2881 } |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2882 if (_generic_signature != NULL) { |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2883 _generic_signature->increment_refcount(); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2884 k->set_generic_signature(_generic_signature); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2885 } |
| 6226 | 2886 if (_sde_buffer != NULL) { |
| 2887 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
| 2888 } | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2889 k->set_inner_classes(_inner_classes()); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2890 k->set_class_annotations(_annotations()); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2891 } |
| 0 | 2892 |
| 2893 typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, | |
| 2894 int runtime_visible_annotations_length, | |
| 2895 u1* runtime_invisible_annotations, | |
| 2896 int runtime_invisible_annotations_length, TRAPS) { | |
| 2897 typeArrayHandle annotations; | |
| 2898 if (runtime_visible_annotations != NULL || | |
| 2899 runtime_invisible_annotations != NULL) { | |
| 2900 typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length + | |
| 2901 runtime_invisible_annotations_length, CHECK_(annotations)); | |
| 2902 annotations = typeArrayHandle(THREAD, anno); | |
| 2903 if (runtime_visible_annotations != NULL) { | |
| 2904 memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length); | |
| 2905 } | |
| 2906 if (runtime_invisible_annotations != NULL) { | |
| 2907 memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length); | |
| 2908 } | |
| 2909 } | |
| 2910 return annotations; | |
| 2911 } | |
| 2912 | |
| 2913 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2914 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
| 0 | 2915 Handle class_loader, |
| 2916 Handle protection_domain, | |
| 710 | 2917 KlassHandle host_klass, |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2918 GrowableArray<Handle>* cp_patches, |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2919 TempNewSymbol& parsed_name, |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
2920 bool verify, |
| 0 | 2921 TRAPS) { |
|
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2922 // When a retransformable agent is attached, JVMTI caches the |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2923 // class bytes that existed before the first retransformation. |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2924 // If RedefineClasses() was used before the retransformable |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2925 // agent attached, then the cached class bytes may not be the |
|
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2926 // original class bytes. |
| 0 | 2927 unsigned char *cached_class_file_bytes = NULL; |
| 2928 jint cached_class_file_length; | |
| 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
parents:
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
parents:
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
parents:
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 | |
|
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
4755
diff
changeset
|
3037 constantPoolHandle cp = parse_constant_pool(class_loader, CHECK_(nullHandle)); |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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
parents:
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
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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
parents:
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
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
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
parents:
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 | |
| 3086 klassOop preserve_this_klass; // for storing result across HandleMark | |
| 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
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3092 if (name != NULL && class_name != name) { |
| 0 | 3093 ResourceMark rm(THREAD); |
| 3094 Exceptions::fthrow( | |
| 3095 THREAD_AND_LOCATION, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
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) { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
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
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
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) && | |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
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
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3124 bool is_array = false; |
|
a45484ea312d
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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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196
diff
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|
3127 if (_need_verify) |
|
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jrose
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|
3128 is_array = super_klass->oop_is_array(); |
|
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jrose
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diff
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|
3129 } else if (_need_verify) { |
|
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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diff
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|
3130 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
|
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6653858: dynamic languages need to be able to load anonymous classes
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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(); | |
| 3140 objArrayHandle local_interfaces; | |
| 3141 if (itfs_len == 0) { | |
| 3142 local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
| 3143 } else { | |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
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diff
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|
3144 local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, _class_name, CHECK_(nullHandle)); |
| 0 | 3145 } |
| 3146 | |
|
4744
cd5d8cafcc84
7123315: instanceKlass::_static_oop_field_count and instanceKlass::_java_fields_count should be u2 type.
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; |
| 0 | 3150 objArrayHandle fields_annotations; |
| 3938 | 3151 typeArrayHandle fields = parse_fields(class_name, cp, access_flags.is_interface(), &fac, &fields_annotations, |
| 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 | |
| 3160 objArrayOop methods_annotations_oop = NULL; | |
| 3161 objArrayOop methods_parameter_annotations_oop = NULL; | |
| 3162 objArrayOop methods_default_annotations_oop = NULL; | |
| 3163 objArrayHandle methods = parse_methods(cp, access_flags.is_interface(), | |
| 3164 &promoted_flags, | |
| 3165 &has_final_method, | |
| 3166 &methods_annotations_oop, | |
| 3167 &methods_parameter_annotations_oop, | |
| 3168 &methods_default_annotations_oop, | |
| 3169 CHECK_(nullHandle)); | |
| 3170 | |
| 3171 objArrayHandle methods_annotations(THREAD, methods_annotations_oop); | |
| 3172 objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop); | |
| 3173 objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop); | |
| 3174 | |
|
6222
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diff
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|
3175 // Additional attributes |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
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|
3176 ClassAnnotationCollector parsed_annotations; |
|
6d8f36bcef55
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diff
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|
3177 parse_classfile_attributes(cp, &parsed_annotations, CHECK_(nullHandle)); |
|
6d8f36bcef55
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jrose
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diff
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|
3178 |
|
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diff
changeset
|
3179 // Make sure this is the end of class file stream |
|
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jrose
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diff
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|
3180 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
|
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diff
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|
3181 |
| 0 | 3182 // We check super class after class file is parsed and format is checked |
|
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|
3183 if (super_class_index > 0 && super_klass.is_null()) { |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
3184 Symbol* sk = cp->klass_name_at(super_class_index); |
| 0 | 3185 if (access_flags.is_interface()) { |
| 3186 // Before attempting to resolve the superclass, check for class format | |
| 3187 // errors not checked yet. | |
|
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|
3188 guarantee_property(sk == vmSymbols::java_lang_Object(), |
| 0 | 3189 "Interfaces must have java.lang.Object as superclass in class file %s", |
| 3190 CHECK_(nullHandle)); | |
| 3191 } | |
| 3192 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, | |
| 3193 sk, | |
| 3194 class_loader, | |
| 3195 protection_domain, | |
| 3196 true, | |
| 3197 CHECK_(nullHandle)); | |
|
875
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6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
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diff
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|
3198 |
| 0 | 3199 KlassHandle kh (THREAD, k); |
| 3200 super_klass = instanceKlassHandle(THREAD, kh()); | |
|
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
3201 if (LinkWellKnownClasses) // my super class is well known to me |
|
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
3202 cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve |
|
431
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jrose
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|
3203 } |
|
a45484ea312d
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jrose
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196
diff
changeset
|
3204 if (super_klass.not_null()) { |
| 0 | 3205 if (super_klass->is_interface()) { |
| 3206 ResourceMark rm(THREAD); | |
| 3207 Exceptions::fthrow( | |
| 3208 THREAD_AND_LOCATION, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3209 vmSymbols::java_lang_IncompatibleClassChangeError(), |
| 0 | 3210 "class %s has interface %s as super class", |
| 3211 class_name->as_klass_external_name(), | |
| 3212 super_klass->external_name() | |
| 3213 ); | |
| 3214 return nullHandle; | |
| 3215 } | |
| 3216 // Make sure super class is not final | |
| 3217 if (super_klass->is_final()) { | |
| 3218 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
| 3219 } | |
| 3220 } | |
| 3221 | |
| 3222 // Compute the transitive list of all unique interfaces implemented by this class | |
| 3223 objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); | |
| 3224 | |
| 3225 // sort methods | |
| 3226 typeArrayHandle method_ordering = sort_methods(methods, | |
| 3227 methods_annotations, | |
| 3228 methods_parameter_annotations, | |
| 3229 methods_default_annotations, | |
| 3230 CHECK_(nullHandle)); | |
| 3231 | |
| 3232 // promote flags from parse_methods() to the klass' flags | |
| 3233 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
| 3234 | |
| 3235 // Size of Java vtable (in words) | |
| 3236 int vtable_size = 0; | |
| 3237 int itable_size = 0; | |
| 3238 int num_miranda_methods = 0; | |
| 3239 | |
| 3240 klassVtable::compute_vtable_size_and_num_mirandas(vtable_size, | |
| 3241 num_miranda_methods, | |
| 3242 super_klass(), | |
| 3243 methods(), | |
| 3244 access_flags, | |
|
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3245 class_loader, |
|
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3246 class_name, |
|
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3247 local_interfaces(), |
|
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3248 CHECK_(nullHandle)); |
| 0 | 3249 |
| 3250 // Size of Java itable (in words) | |
| 3251 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
| 3252 | |
| 3253 // Field size and offset computation | |
| 3254 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
| 3255 #ifndef PRODUCT | |
| 3256 int orig_nonstatic_field_size = 0; | |
| 3257 #endif | |
| 3258 int static_field_size = 0; | |
| 3259 int next_static_oop_offset; | |
| 3260 int next_static_double_offset; | |
| 3261 int next_static_word_offset; | |
| 3262 int next_static_short_offset; | |
| 3263 int next_static_byte_offset; | |
| 3264 int next_static_type_offset; | |
| 3265 int next_nonstatic_oop_offset; | |
| 3266 int next_nonstatic_double_offset; | |
| 3267 int next_nonstatic_word_offset; | |
| 3268 int next_nonstatic_short_offset; | |
| 3269 int next_nonstatic_byte_offset; | |
| 3270 int next_nonstatic_type_offset; | |
| 3271 int first_nonstatic_oop_offset; | |
| 3272 int first_nonstatic_field_offset; | |
| 3273 int next_nonstatic_field_offset; | |
| 3274 | |
| 3275 // Calculate the starting byte offsets | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3276 next_static_oop_offset = instanceMirrorKlass::offset_of_static_fields(); |
| 0 | 3277 next_static_double_offset = next_static_oop_offset + |
| 3938 | 3278 (fac.count[STATIC_OOP] * heapOopSize); |
| 3279 if ( fac.count[STATIC_DOUBLE] && | |
| 0 | 3280 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
| 3281 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
| 3282 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
| 3283 } | |
| 3284 | |
| 3285 next_static_word_offset = next_static_double_offset + | |
| 3938 | 3286 (fac.count[STATIC_DOUBLE] * BytesPerLong); |
| 0 | 3287 next_static_short_offset = next_static_word_offset + |
| 3938 | 3288 (fac.count[STATIC_WORD] * BytesPerInt); |
| 0 | 3289 next_static_byte_offset = next_static_short_offset + |
| 3938 | 3290 (fac.count[STATIC_SHORT] * BytesPerShort); |
| 0 | 3291 next_static_type_offset = align_size_up((next_static_byte_offset + |
| 3938 | 3292 fac.count[STATIC_BYTE] ), wordSize ); |
| 0 | 3293 static_field_size = (next_static_type_offset - |
| 3294 next_static_oop_offset) / wordSize; | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2357
diff
changeset
|
3295 |
|
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3296 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3297 nonstatic_field_size * heapOopSize; |
| 0 | 3298 next_nonstatic_field_offset = first_nonstatic_field_offset; |
| 3299 | |
| 3938 | 3300 unsigned int nonstatic_double_count = fac.count[NONSTATIC_DOUBLE]; |
| 3301 unsigned int nonstatic_word_count = fac.count[NONSTATIC_WORD]; | |
| 3302 unsigned int nonstatic_short_count = fac.count[NONSTATIC_SHORT]; | |
| 3303 unsigned int nonstatic_byte_count = fac.count[NONSTATIC_BYTE]; | |
| 3304 unsigned int nonstatic_oop_count = fac.count[NONSTATIC_OOP]; | |
| 0 | 3305 |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3306 bool super_has_nonstatic_fields = |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3307 (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
changeset
|
3308 bool has_nonstatic_fields = super_has_nonstatic_fields || |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3309 ((nonstatic_double_count + nonstatic_word_count + |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3310 nonstatic_short_count + nonstatic_byte_count + |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3311 nonstatic_oop_count) != 0); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3312 |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3313 |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3314 // Prepare list of oops for oop map generation. |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3315 int* nonstatic_oop_offsets; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3316 unsigned int* nonstatic_oop_counts; |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3317 unsigned int nonstatic_oop_map_count = 0; |
| 0 | 3318 |
| 3319 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3320 THREAD, int, nonstatic_oop_count + 1); |
| 938 | 3321 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3322 THREAD, unsigned int, nonstatic_oop_count + 1); |
| 0 | 3323 |
| 3938 | 3324 first_nonstatic_oop_offset = 0; // will be set for first oop field |
| 0 | 3325 |
| 3326 #ifndef PRODUCT | |
| 3327 if( PrintCompactFieldsSavings ) { | |
| 3328 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
|
113
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coleenp
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92
diff
changeset
|
3329 (nonstatic_oop_count * heapOopSize); |
| 0 | 3330 if ( nonstatic_double_count > 0 ) { |
| 3331 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
| 3332 } | |
| 3333 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
| 3334 (nonstatic_double_count * BytesPerLong); | |
| 3335 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
| 3336 (nonstatic_word_count * BytesPerInt); | |
| 3337 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
| 3338 (nonstatic_short_count * BytesPerShort); | |
| 3339 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
|
165
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6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
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136
diff
changeset
|
3340 nonstatic_byte_count ), heapOopSize ); |
| 0 | 3341 orig_nonstatic_field_size = nonstatic_field_size + |
|
165
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6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
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136
diff
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|
3342 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
| 0 | 3343 } |
| 3344 #endif | |
| 3345 bool compact_fields = CompactFields; | |
| 3346 int allocation_style = FieldsAllocationStyle; | |
|
1366
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3347 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
|
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3348 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
| 0 | 3349 allocation_style = 1; // Optimistic |
| 3350 } | |
| 3351 | |
| 3352 // The next classes have predefined hard-coded fields offsets | |
| 3353 // (see in JavaClasses::compute_hard_coded_offsets()). | |
| 3354 // Use default fields allocation order for them. | |
| 3355 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
coleenp
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2085
diff
changeset
|
3356 (class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3357 class_name == vmSymbols::java_lang_Class() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3358 class_name == vmSymbols::java_lang_ClassLoader() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3359 class_name == vmSymbols::java_lang_ref_Reference() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3360 class_name == vmSymbols::java_lang_ref_SoftReference() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3361 class_name == vmSymbols::java_lang_StackTraceElement() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3362 class_name == vmSymbols::java_lang_String() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3363 class_name == vmSymbols::java_lang_Throwable() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3364 class_name == vmSymbols::java_lang_Boolean() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3365 class_name == vmSymbols::java_lang_Character() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3366 class_name == vmSymbols::java_lang_Float() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3367 class_name == vmSymbols::java_lang_Double() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3368 class_name == vmSymbols::java_lang_Byte() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3369 class_name == vmSymbols::java_lang_Short() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3370 class_name == vmSymbols::java_lang_Integer() || |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3371 class_name == vmSymbols::java_lang_Long())) { |
| 0 | 3372 allocation_style = 0; // Allocate oops first |
| 3373 compact_fields = false; // Don't compact fields | |
| 3374 } | |
| 3375 | |
| 3376 if( allocation_style == 0 ) { | |
| 3377 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes | |
| 3378 next_nonstatic_oop_offset = next_nonstatic_field_offset; | |
| 3379 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
|
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|
3380 (nonstatic_oop_count * heapOopSize); |
| 0 | 3381 } else if( allocation_style == 1 ) { |
| 3382 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops | |
| 3383 next_nonstatic_double_offset = next_nonstatic_field_offset; | |
|
1366
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6940733: allocate non static oop fields in super and sub classes together
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|
3384 } else if( allocation_style == 2 ) { |
|
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diff
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|
3385 // Fields allocation: oops fields in super and sub classes are together. |
|
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diff
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|
3386 if( nonstatic_field_size > 0 && super_klass() != NULL && |
|
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diff
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|
3387 super_klass->nonstatic_oop_map_size() > 0 ) { |
|
3786
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diff
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|
3388 int map_count = super_klass->nonstatic_oop_map_count(); |
|
1366
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diff
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|
3389 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
|
3786
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diff
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|
3390 OopMapBlock* last_map = first_map + map_count - 1; |
|
1366
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diff
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|
3391 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
|
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diff
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|
3392 if (next_offset == next_nonstatic_field_offset) { |
|
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diff
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|
3393 allocation_style = 0; // allocate oops first |
|
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diff
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|
3394 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
|
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diff
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|
3395 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
|
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diff
changeset
|
3396 (nonstatic_oop_count * heapOopSize); |
|
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diff
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|
3397 } |
|
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|
3398 } |
|
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|
3399 if( allocation_style == 2 ) { |
|
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diff
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|
3400 allocation_style = 1; // allocate oops last |
|
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diff
changeset
|
3401 next_nonstatic_double_offset = next_nonstatic_field_offset; |
|
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1144
diff
changeset
|
3402 } |
| 0 | 3403 } else { |
| 3404 ShouldNotReachHere(); | |
| 3405 } | |
| 3406 | |
| 3407 int nonstatic_oop_space_count = 0; | |
| 3408 int nonstatic_word_space_count = 0; | |
| 3409 int nonstatic_short_space_count = 0; | |
| 3410 int nonstatic_byte_space_count = 0; | |
| 3411 int nonstatic_oop_space_offset; | |
| 3412 int nonstatic_word_space_offset; | |
| 3413 int nonstatic_short_space_offset; | |
| 3414 int nonstatic_byte_space_offset; | |
| 3415 | |
|
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|
3416 if( nonstatic_double_count > 0 ) { |
|
437d03ea40b1
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|
3417 int offset = next_nonstatic_double_offset; |
| 0 | 3418 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
| 3419 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
| 3420 // Allocate available fields into the gap before double field. | |
| 3421 int length = next_nonstatic_double_offset - offset; | |
| 3422 assert(length == BytesPerInt, ""); | |
| 3423 nonstatic_word_space_offset = offset; | |
| 3424 if( nonstatic_word_count > 0 ) { | |
| 3425 nonstatic_word_count -= 1; | |
| 3426 nonstatic_word_space_count = 1; // Only one will fit | |
| 3427 length -= BytesPerInt; | |
| 3428 offset += BytesPerInt; | |
| 3429 } | |
| 3430 nonstatic_short_space_offset = offset; | |
| 3431 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
| 3432 nonstatic_short_count -= 1; | |
| 3433 nonstatic_short_space_count += 1; | |
| 3434 length -= BytesPerShort; | |
| 3435 offset += BytesPerShort; | |
| 3436 } | |
| 3437 nonstatic_byte_space_offset = offset; | |
| 3438 while( length > 0 && nonstatic_byte_count > 0 ) { | |
| 3439 nonstatic_byte_count -= 1; | |
| 3440 nonstatic_byte_space_count += 1; | |
| 3441 length -= 1; | |
| 3442 } | |
| 3443 // Allocate oop field in the gap if there are no other fields for that. | |
| 3444 nonstatic_oop_space_offset = offset; | |
|
165
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diff
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|
3445 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
| 0 | 3446 allocation_style != 0 ) { // when oop fields not first |
| 3447 nonstatic_oop_count -= 1; | |
| 3448 nonstatic_oop_space_count = 1; // Only one will fit | |
|
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|
3449 length -= heapOopSize; |
|
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92
diff
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|
3450 offset += heapOopSize; |
| 0 | 3451 } |
| 3452 } | |
| 3453 } | |
| 3454 | |
| 3455 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
| 3456 (nonstatic_double_count * BytesPerLong); | |
| 3457 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
| 3458 (nonstatic_word_count * BytesPerInt); | |
| 3459 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
| 3460 (nonstatic_short_count * BytesPerShort); | |
| 3461 | |
| 3462 int notaligned_offset; | |
| 3463 if( allocation_style == 0 ) { | |
| 3464 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
| 3465 } else { // allocation_style == 1 | |
| 3466 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
| 3467 if( nonstatic_oop_count > 0 ) { | |
|
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diff
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|
3468 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
| 0 | 3469 } |
|
113
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|
3470 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
| 0 | 3471 } |
|
165
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kvn
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|
3472 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
| 0 | 3473 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
|
165
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diff
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|
3474 - first_nonstatic_field_offset)/heapOopSize); |
| 0 | 3475 |
| 3476 // Iterate over fields again and compute correct offsets. | |
| 3477 // The field allocation type was temporarily stored in the offset slot. | |
| 3478 // oop fields are located before non-oop fields (static and non-static). | |
| 3938 | 3479 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
| 0 | 3480 int real_offset; |
| 3938 | 3481 FieldAllocationType atype = (FieldAllocationType) fs.offset(); |
| 0 | 3482 switch (atype) { |
| 3483 case STATIC_OOP: | |
| 3484 real_offset = next_static_oop_offset; | |
|
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92
diff
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|
3485 next_static_oop_offset += heapOopSize; |
| 0 | 3486 break; |
| 3487 case STATIC_BYTE: | |
| 3488 real_offset = next_static_byte_offset; | |
| 3489 next_static_byte_offset += 1; | |
| 3490 break; | |
| 3491 case STATIC_SHORT: | |
| 3492 real_offset = next_static_short_offset; | |
| 3493 next_static_short_offset += BytesPerShort; | |
| 3494 break; | |
| 3495 case STATIC_WORD: | |
| 3496 real_offset = next_static_word_offset; | |
| 3497 next_static_word_offset += BytesPerInt; | |
| 3498 break; | |
| 3499 case STATIC_DOUBLE: | |
| 3500 real_offset = next_static_double_offset; | |
| 3501 next_static_double_offset += BytesPerLong; | |
| 3502 break; | |
| 3503 case NONSTATIC_OOP: | |
| 3504 if( nonstatic_oop_space_count > 0 ) { | |
| 3505 real_offset = nonstatic_oop_space_offset; | |
|
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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92
diff
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|
3506 nonstatic_oop_space_offset += heapOopSize; |
| 0 | 3507 nonstatic_oop_space_count -= 1; |
| 3508 } else { | |
| 3509 real_offset = next_nonstatic_oop_offset; | |
|
113
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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92
diff
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|
3510 next_nonstatic_oop_offset += heapOopSize; |
| 0 | 3511 } |
| 3512 // Update oop maps | |
| 3513 if( nonstatic_oop_map_count > 0 && | |
| 3514 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3515 real_offset - |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3516 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3517 heapOopSize ) { |
| 0 | 3518 // Extend current oop map |
| 938 | 3519 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
| 0 | 3520 } else { |
| 3521 // Create new oop map | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3522 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
| 938 | 3523 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
| 0 | 3524 nonstatic_oop_map_count += 1; |
| 3525 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
| 3526 first_nonstatic_oop_offset = real_offset; | |
| 3527 } | |
| 3528 } | |
| 3529 break; | |
| 3530 case NONSTATIC_BYTE: | |
| 3531 if( nonstatic_byte_space_count > 0 ) { | |
| 3532 real_offset = nonstatic_byte_space_offset; | |
| 3533 nonstatic_byte_space_offset += 1; | |
| 3534 nonstatic_byte_space_count -= 1; | |
| 3535 } else { | |
| 3536 real_offset = next_nonstatic_byte_offset; | |
| 3537 next_nonstatic_byte_offset += 1; | |
| 3538 } | |
| 3539 break; | |
| 3540 case NONSTATIC_SHORT: | |
| 3541 if( nonstatic_short_space_count > 0 ) { | |
| 3542 real_offset = nonstatic_short_space_offset; | |
| 3543 nonstatic_short_space_offset += BytesPerShort; | |
| 3544 nonstatic_short_space_count -= 1; | |
| 3545 } else { | |
| 3546 real_offset = next_nonstatic_short_offset; | |
| 3547 next_nonstatic_short_offset += BytesPerShort; | |
| 3548 } | |
| 3549 break; | |
| 3550 case NONSTATIC_WORD: | |
| 3551 if( nonstatic_word_space_count > 0 ) { | |
| 3552 real_offset = nonstatic_word_space_offset; | |
| 3553 nonstatic_word_space_offset += BytesPerInt; | |
| 3554 nonstatic_word_space_count -= 1; | |
| 3555 } else { | |
| 3556 real_offset = next_nonstatic_word_offset; | |
| 3557 next_nonstatic_word_offset += BytesPerInt; | |
| 3558 } | |
| 3559 break; | |
| 3560 case NONSTATIC_DOUBLE: | |
| 3561 real_offset = next_nonstatic_double_offset; | |
| 3562 next_nonstatic_double_offset += BytesPerLong; | |
| 3563 break; | |
| 3564 default: | |
| 3565 ShouldNotReachHere(); | |
| 3566 } | |
| 3938 | 3567 fs.set_offset(real_offset); |
| 0 | 3568 } |
| 3569 | |
| 3570 // Size of instances | |
| 3571 int instance_size; | |
| 3572 | |
|
165
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kvn
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136
diff
changeset
|
3573 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
| 0 | 3574 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
| 3575 | |
|
165
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kvn
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136
diff
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|
3576 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 | 3577 |
| 938 | 3578 // Number of non-static oop map blocks allocated at end of klass. |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3579 const unsigned int total_oop_map_count = |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3580 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3581 first_nonstatic_oop_offset); |
| 0 | 3582 |
| 3583 // Compute reference type | |
| 3584 ReferenceType rt; | |
| 3585 if (super_klass() == NULL) { | |
| 3586 rt = REF_NONE; | |
| 3587 } else { | |
| 3588 rt = super_klass->reference_type(); | |
| 3589 } | |
| 3590 | |
| 3591 // We can now create the basic klassOop for this klass | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3592 klassOop ik = oopFactory::new_instanceKlass(name, vtable_size, itable_size, |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3593 static_field_size, |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3594 total_oop_map_count, |
|
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5967
diff
changeset
|
3595 access_flags, |
|
6038
8bafad97cd26
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
jiangli
parents:
6000
diff
changeset
|
3596 rt, host_klass, |
|
8bafad97cd26
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
jiangli
parents:
6000
diff
changeset
|
3597 CHECK_(nullHandle)); |
| 0 | 3598 instanceKlassHandle this_klass (THREAD, ik); |
| 3599 | |
| 938 | 3600 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
| 3601 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
| 3602 "sanity"); | |
| 0 | 3603 |
| 3604 // Fill in information already parsed | |
| 975 | 3605 this_klass->set_should_verify_class(verify); |
| 0 | 3606 jint lh = Klass::instance_layout_helper(instance_size, false); |
| 3607 this_klass->set_layout_helper(lh); | |
| 3608 assert(this_klass->oop_is_instance(), "layout is correct"); | |
| 3609 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
| 3610 // Not yet: supers are done below to support the new subtype-checking fields | |
| 3611 //this_klass->set_super(super_klass()); | |
| 3612 this_klass->set_class_loader(class_loader()); | |
| 3613 this_klass->set_nonstatic_field_size(nonstatic_field_size); | |
| 975 | 3614 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
| 3938 | 3615 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
| 0 | 3616 cp->set_pool_holder(this_klass()); |
|
2177
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coleenp
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2085
diff
changeset
|
3617 error_handler.set_in_error(false); // turn off error handler for cp |
| 0 | 3618 this_klass->set_constants(cp()); |
| 3619 this_klass->set_local_interfaces(local_interfaces()); | |
| 3938 | 3620 this_klass->set_fields(fields(), java_fields_count); |
| 0 | 3621 this_klass->set_methods(methods()); |
| 3622 if (has_final_method) { | |
| 3623 this_klass->set_has_final_method(); | |
| 3624 } | |
| 3625 this_klass->set_method_ordering(method_ordering()); | |
|
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
975
diff
changeset
|
3626 // The instanceKlass::_methods_jmethod_ids cache and the |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3627 // instanceKlass::_methods_cached_itable_indices cache are |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3628 // both managed on the assumption that the initial cache |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3629 // size is equal to the number of methods in the class. If |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3630 // that changes, then instanceKlass::idnum_can_increment() |
|
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3631 // has to be changed accordingly. |
| 0 | 3632 this_klass->set_initial_method_idnum(methods->length()); |
| 3633 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
| 710 | 3634 if (LinkWellKnownClasses || is_anonymous()) // I am well known to myself |
|
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
3635 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
| 0 | 3636 this_klass->set_protection_domain(protection_domain()); |
| 3637 this_klass->set_fields_annotations(fields_annotations()); | |
| 3638 this_klass->set_methods_annotations(methods_annotations()); | |
| 3639 this_klass->set_methods_parameter_annotations(methods_parameter_annotations()); | |
| 3640 this_klass->set_methods_default_annotations(methods_default_annotations()); | |
| 3641 | |
| 3642 this_klass->set_minor_version(minor_version); | |
| 3643 this_klass->set_major_version(major_version); | |
| 3644 | |
|
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3645 // Set up methodOop::intrinsic_id as soon as we know the names of methods. |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3646 // (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:
710
diff
changeset
|
3647 // 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
parents:
710
diff
changeset
|
3648 // when everything is fresh in memory.) |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3649 if (methodOopDesc::klass_id_for_intrinsics(this_klass->as_klassOop()) != vmSymbols::NO_SID) { |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3650 for (int j = 0; j < methods->length(); j++) { |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3651 ((methodOop)methods->obj_at(j))->init_intrinsic_id(); |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3652 } |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3653 } |
|
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3654 |
| 0 | 3655 if (cached_class_file_bytes != NULL) { |
| 3656 // JVMTI: we have an instanceKlass now, tell it about the cached bytes | |
| 3657 this_klass->set_cached_class_file(cached_class_file_bytes, | |
| 3658 cached_class_file_length); | |
| 3659 } | |
| 3660 | |
| 3661 // Miranda methods | |
| 3662 if ((num_miranda_methods > 0) || | |
| 3663 // if this class introduced new miranda methods or | |
| 3664 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
| 3665 // super class exists and this class inherited miranda methods | |
| 3666 ) { | |
| 3667 this_klass->set_has_miranda_methods(); // then set a flag | |
| 3668 } | |
| 3669 | |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3670 // Fill in field values obtained by parse_classfile_attributes |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3671 if (parsed_annotations.has_any_annotations()) |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3672 parsed_annotations.apply_to(this_klass); |
|
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3673 apply_parsed_class_attributes(this_klass); |
| 0 | 3674 |
| 3675 // VerifyOops believes that once this has been set, the object is completely loaded. | |
| 3676 // Compute transitive closure of interfaces this class implements | |
| 3677 this_klass->set_transitive_interfaces(transitive_interfaces()); | |
| 3678 | |
| 3679 // Fill in information needed to compute superclasses. | |
| 3680 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
| 3681 | |
| 3682 // Initialize itable offset tables | |
| 3683 klassItable::setup_itable_offset_table(this_klass); | |
| 3684 | |
| 3685 // Do final class setup | |
| 938 | 3686 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
| 0 | 3687 |
|
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3688 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
| 0 | 3689 set_precomputed_flags(this_klass); |
| 3690 | |
| 3691 // reinitialize modifiers, using the InnerClasses attribute | |
| 3692 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
| 3693 this_klass->set_modifier_flags(computed_modifiers); | |
| 3694 | |
| 3695 // check if this class can access its super class | |
| 3696 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
| 3697 | |
| 3698 // check if this class can access its superinterfaces | |
| 3699 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
| 3700 | |
| 3701 // check if this class overrides any final method | |
| 3702 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
| 3703 | |
| 3704 // check that if this class is an interface then it doesn't have static methods | |
| 3705 if (this_klass->is_interface()) { | |
| 3706 check_illegal_static_method(this_klass, CHECK_(nullHandle)); | |
| 3707 } | |
| 3708 | |
|
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3709 // Allocate mirror and initialize static fields |
|
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3710 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
changeset
|
3711 |
| 0 | 3712 ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()), |
| 3713 false /* not shared class */); | |
| 3714 | |
| 3715 if (TraceClassLoading) { | |
| 3716 // print in a single call to reduce interleaving of output | |
| 3717 if (cfs->source() != NULL) { | |
| 3718 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
| 3719 cfs->source()); | |
| 3720 } else if (class_loader.is_null()) { | |
| 3721 if (THREAD->is_Java_thread()) { | |
| 3722 klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1); | |
| 3723 tty->print("[Loaded %s by instance of %s]\n", | |
| 3724 this_klass->external_name(), | |
| 3725 instanceKlass::cast(caller)->external_name()); | |
| 3726 } else { | |
| 3727 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
| 3728 } | |
| 3729 } else { | |
| 3730 ResourceMark rm; | |
| 3731 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
| 3732 instanceKlass::cast(class_loader->klass())->external_name()); | |
| 3733 } | |
| 3734 } | |
| 3735 | |
| 3736 if (TraceClassResolution) { | |
| 3737 // print out the superclass. | |
| 3738 const char * from = Klass::cast(this_klass())->external_name(); | |
| 3739 if (this_klass->java_super() != NULL) { | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3740 tty->print("RESOLVE %s %s (super)\n", from, instanceKlass::cast(this_klass->java_super())->external_name()); |
| 0 | 3741 } |
| 3742 // print out each of the interface classes referred to by this class. | |
| 3743 objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces()); | |
| 3744 if (!local_interfaces.is_null()) { | |
| 3745 int length = local_interfaces->length(); | |
| 3746 for (int i = 0; i < length; i++) { | |
| 3747 klassOop k = klassOop(local_interfaces->obj_at(i)); | |
| 3748 instanceKlass* to_class = instanceKlass::cast(k); | |
| 3749 const char * to = to_class->external_name(); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3750 tty->print("RESOLVE %s %s (interface)\n", from, to); |
| 0 | 3751 } |
| 3752 } | |
| 3753 } | |
| 3754 | |
| 3755 #ifndef PRODUCT | |
| 3756 if( PrintCompactFieldsSavings ) { | |
| 3757 if( nonstatic_field_size < orig_nonstatic_field_size ) { | |
|
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3758 tty->print("[Saved %d of %d bytes in %s]\n", |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3759 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3760 orig_nonstatic_field_size*heapOopSize, |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3761 this_klass->external_name()); |
| 0 | 3762 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
|
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3763 tty->print("[Wasted %d over %d bytes in %s]\n", |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3764 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3765 orig_nonstatic_field_size*heapOopSize, |
|
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3766 this_klass->external_name()); |
| 0 | 3767 } |
| 3768 } | |
| 3769 #endif | |
| 3770 | |
| 3771 // preserve result across HandleMark | |
| 3772 preserve_this_klass = this_klass(); | |
| 3773 } | |
| 3774 | |
| 3775 // Create new handle outside HandleMark | |
| 3776 instanceKlassHandle this_klass (THREAD, preserve_this_klass); | |
| 3777 debug_only(this_klass->as_klassOop()->verify();) | |
| 3778 | |
| 3779 return this_klass; | |
| 3780 } | |
| 3781 | |
| 3782 | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3783 unsigned int |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3784 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3785 unsigned int nonstatic_oop_map_count, |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3786 int first_nonstatic_oop_offset) { |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3787 unsigned int map_count = |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3788 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
| 0 | 3789 if (nonstatic_oop_map_count > 0) { |
| 3790 // We have oops to add to map | |
| 938 | 3791 if (map_count == 0) { |
| 3792 map_count = nonstatic_oop_map_count; | |
| 0 | 3793 } else { |
| 938 | 3794 // Check whether we should add a new map block or whether the last one can |
| 3795 // be extended | |
| 3796 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
| 3797 OopMapBlock* const last_map = first_map + map_count - 1; | |
| 3798 | |
| 3799 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
| 0 | 3800 if (next_offset == first_nonstatic_oop_offset) { |
| 3801 // There is no gap bettwen superklass's last oop field and first | |
| 3802 // local oop field, merge maps. | |
| 3803 nonstatic_oop_map_count -= 1; | |
| 3804 } else { | |
| 3805 // Superklass didn't end with a oop field, add extra maps | |
| 938 | 3806 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
| 0 | 3807 } |
| 938 | 3808 map_count += nonstatic_oop_map_count; |
| 0 | 3809 } |
| 3810 } | |
| 938 | 3811 return map_count; |
| 0 | 3812 } |
| 3813 | |
| 3814 | |
| 3815 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3816 unsigned int nonstatic_oop_map_count, |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3817 int* nonstatic_oop_offsets, |
|
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3818 unsigned int* nonstatic_oop_counts) { |
| 0 | 3819 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
| 938 | 3820 const instanceKlass* const super = k->superklass(); |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3821 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
| 938 | 3822 if (super_count > 0) { |
| 3823 // Copy maps from superklass | |
| 0 | 3824 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
|
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3825 for (unsigned int i = 0; i < super_count; ++i) { |
| 0 | 3826 *this_oop_map++ = *super_oop_map++; |
| 3827 } | |
| 3828 } | |
| 938 | 3829 |
| 0 | 3830 if (nonstatic_oop_map_count > 0) { |
| 938 | 3831 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
| 3832 // The counts differ because there is no gap between superklass's last oop | |
| 3833 // field and the first local oop field. Extend the last oop map copied | |
| 0 | 3834 // from the superklass instead of creating new one. |
| 3835 nonstatic_oop_map_count--; | |
| 3836 nonstatic_oop_offsets++; | |
| 3837 this_oop_map--; | |
| 938 | 3838 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
| 0 | 3839 this_oop_map++; |
| 3840 } | |
| 938 | 3841 |
| 0 | 3842 // Add new map blocks, fill them |
| 3843 while (nonstatic_oop_map_count-- > 0) { | |
| 3844 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
| 938 | 3845 this_oop_map->set_count(*nonstatic_oop_counts++); |
| 0 | 3846 this_oop_map++; |
| 3847 } | |
| 938 | 3848 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
| 3849 this_oop_map, "sanity"); | |
| 0 | 3850 } |
| 3851 } | |
| 3852 | |
| 3853 | |
| 3854 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
| 3855 klassOop super = k->super(); | |
| 3856 | |
| 3857 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
| 3858 // in which case we don't have to register objects as finalizable | |
| 3859 if (!_has_empty_finalizer) { | |
| 3860 if (_has_finalizer || | |
| 3861 (super != NULL && super->klass_part()->has_finalizer())) { | |
| 3862 k->set_has_finalizer(); | |
| 3863 } | |
| 3864 } | |
| 3865 | |
| 3866 #ifdef ASSERT | |
| 3867 bool f = false; | |
| 3868 methodOop m = k->lookup_method(vmSymbols::finalize_method_name(), | |
| 3869 vmSymbols::void_method_signature()); | |
| 3870 if (m != NULL && !m->is_empty_method()) { | |
| 3871 f = true; | |
| 3872 } | |
| 3873 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
| 3874 #endif | |
| 3875 | |
| 3876 // Check if this klass supports the java.lang.Cloneable interface | |
| 1142 | 3877 if (SystemDictionary::Cloneable_klass_loaded()) { |
| 3878 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
| 0 | 3879 k->set_is_cloneable(); |
| 3880 } | |
| 3881 } | |
| 3882 | |
| 3883 // Check if this klass has a vanilla default constructor | |
| 3884 if (super == NULL) { | |
| 3885 // java.lang.Object has empty default constructor | |
| 3886 k->set_has_vanilla_constructor(); | |
| 3887 } else { | |
| 3888 if (Klass::cast(super)->has_vanilla_constructor() && | |
| 3889 _has_vanilla_constructor) { | |
| 3890 k->set_has_vanilla_constructor(); | |
| 3891 } | |
| 3892 #ifdef ASSERT | |
| 3893 bool v = false; | |
| 3894 if (Klass::cast(super)->has_vanilla_constructor()) { | |
| 3895 methodOop constructor = k->find_method(vmSymbols::object_initializer_name( | |
| 3896 ), vmSymbols::void_method_signature()); | |
| 3897 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
| 3898 v = true; | |
| 3899 } | |
| 3900 } | |
| 3901 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
| 3902 #endif | |
| 3903 } | |
| 3904 | |
| 3905 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
| 3906 // See documentation of instanceKlass::can_be_fastpath_allocated(). | |
| 3907 assert(k->size_helper() > 0, "layout_helper is initialized"); | |
| 3908 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
| 3909 || k->is_abstract() || k->is_interface() | |
| 3910 || (k->name() == vmSymbols::java_lang_Class() | |
| 3911 && k->class_loader() == NULL) | |
| 3912 || k->size_helper() >= FastAllocateSizeLimit) { | |
| 3913 // Forbid fast-path allocation. | |
| 3914 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
| 3915 k->set_layout_helper(lh); | |
| 3916 } | |
| 3917 } | |
| 3918 | |
| 3919 | |
| 3920 // utility method for appending and array with check for duplicates | |
| 3921 | |
| 3922 void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) { | |
| 3923 // iterate over new interfaces | |
| 3924 for (int i = 0; i < ifs->length(); i++) { | |
| 3925 oop e = ifs->obj_at(i); | |
| 3926 assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking"); | |
| 3927 // check for duplicates | |
| 3928 bool duplicate = false; | |
| 3929 for (int j = 0; j < index; j++) { | |
| 3930 if (result->obj_at(j) == e) { | |
| 3931 duplicate = true; | |
| 3932 break; | |
| 3933 } | |
| 3934 } | |
| 3935 // add new interface | |
| 3936 if (!duplicate) { | |
| 3937 result->obj_at_put(index++, e); | |
| 3938 } | |
| 3939 } | |
| 3940 } | |
| 3941 | |
| 3942 objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) { | |
| 3943 // Compute maximum size for transitive interfaces | |
| 3944 int max_transitive_size = 0; | |
| 3945 int super_size = 0; | |
| 3946 // Add superclass transitive interfaces size | |
| 3947 if (super.not_null()) { | |
| 3948 super_size = super->transitive_interfaces()->length(); | |
| 3949 max_transitive_size += super_size; | |
| 3950 } | |
| 3951 // Add local interfaces' super interfaces | |
| 3952 int local_size = local_ifs->length(); | |
| 3953 for (int i = 0; i < local_size; i++) { | |
| 3954 klassOop l = klassOop(local_ifs->obj_at(i)); | |
| 3955 max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length(); | |
| 3956 } | |
| 3957 // Finally add local interfaces | |
| 3958 max_transitive_size += local_size; | |
| 3959 // Construct array | |
| 3960 objArrayHandle result; | |
| 3961 if (max_transitive_size == 0) { | |
| 3962 // no interfaces, use canonicalized array | |
| 3963 result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
| 3964 } else if (max_transitive_size == super_size) { | |
| 3965 // no new local interfaces added, share superklass' transitive interface array | |
| 3966 result = objArrayHandle(THREAD, super->transitive_interfaces()); | |
| 3967 } else if (max_transitive_size == local_size) { | |
| 3968 // only local interfaces added, share local interface array | |
| 3969 result = local_ifs; | |
| 3970 } else { | |
| 3971 objArrayHandle nullHandle; | |
| 3972 objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle)); | |
| 3973 result = objArrayHandle(THREAD, new_objarray); | |
| 3974 int index = 0; | |
| 3975 // Copy down from superclass | |
| 3976 if (super.not_null()) { | |
| 3977 append_interfaces(result, index, super->transitive_interfaces()); | |
| 3978 } | |
| 3979 // Copy down from local interfaces' superinterfaces | |
| 3980 for (int i = 0; i < local_ifs->length(); i++) { | |
| 3981 klassOop l = klassOop(local_ifs->obj_at(i)); | |
| 3982 append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces()); | |
| 3983 } | |
| 3984 // Finally add local interfaces | |
| 3985 append_interfaces(result, index, local_ifs()); | |
| 3986 | |
| 3987 // Check if duplicates were removed | |
| 3988 if (index != max_transitive_size) { | |
| 3989 assert(index < max_transitive_size, "just checking"); | |
| 3990 objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle)); | |
| 3991 for (int i = 0; i < index; i++) { | |
| 3992 oop e = result->obj_at(i); | |
| 3993 assert(e != NULL, "just checking"); | |
| 3994 new_result->obj_at_put(i, e); | |
| 3995 } | |
| 3996 result = objArrayHandle(THREAD, new_result); | |
| 3997 } | |
| 3998 } | |
| 3999 return result; | |
| 4000 } | |
| 4001 | |
| 4002 | |
| 4003 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
| 4004 klassOop super = this_klass->super(); | |
| 4005 if ((super != NULL) && | |
| 4006 (!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) { | |
| 4007 ResourceMark rm(THREAD); | |
| 4008 Exceptions::fthrow( | |
| 4009 THREAD_AND_LOCATION, | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
4010 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 4011 "class %s cannot access its superclass %s", |
| 4012 this_klass->external_name(), | |
| 4013 instanceKlass::cast(super)->external_name() | |
| 4014 ); | |
| 4015 return; | |
| 4016 } | |
| 4017 } | |
| 4018 | |
| 4019 | |
| 4020 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
| 4021 objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces()); | |
| 4022 int lng = local_interfaces->length(); | |
| 4023 for (int i = lng - 1; i >= 0; i--) { | |
| 4024 klassOop k = klassOop(local_interfaces->obj_at(i)); | |
| 4025 assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface"); | |
| 4026 if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) { | |
| 4027 ResourceMark rm(THREAD); | |
| 4028 Exceptions::fthrow( | |
| 4029 THREAD_AND_LOCATION, | |
|
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4030 vmSymbols::java_lang_IllegalAccessError(), |
| 0 | 4031 "class %s cannot access its superinterface %s", |
| 4032 this_klass->external_name(), | |
| 4033 instanceKlass::cast(k)->external_name() | |
| 4034 ); | |
| 4035 return; | |
| 4036 } | |
| 4037 } | |
| 4038 } | |
| 4039 | |
| 4040 | |
| 4041 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
| 4042 objArrayHandle methods (THREAD, this_klass->methods()); | |
| 4043 int num_methods = methods->length(); | |
| 4044 | |
| 4045 // go thru each method and check if it overrides a final method | |
| 4046 for (int index = 0; index < num_methods; index++) { | |
| 4047 methodOop m = (methodOop)methods->obj_at(index); | |
| 4048 | |
| 4049 // skip private, static and <init> methods | |
| 4050 if ((!m->is_private()) && | |
| 4051 (!m->is_static()) && | |
| 4052 (m->name() != vmSymbols::object_initializer_name())) { | |
| 4053 | |
|
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4054 Symbol* name = m->name(); |
|
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4055 Symbol* signature = m->signature(); |
| 0 | 4056 klassOop k = this_klass->super(); |
| 4057 methodOop super_m = NULL; | |
| 4058 while (k != NULL) { | |
| 4059 // skip supers that don't have final methods. | |
| 4060 if (k->klass_part()->has_final_method()) { | |
| 4061 // lookup a matching method in the super class hierarchy | |
| 4062 super_m = instanceKlass::cast(k)->lookup_method(name, signature); | |
| 4063 if (super_m == NULL) { | |
| 4064 break; // didn't find any match; get out | |
| 4065 } | |
| 4066 | |
| 4067 if (super_m->is_final() && | |
| 4068 // matching method in super is final | |
| 4069 (Reflection::verify_field_access(this_klass->as_klassOop(), | |
| 4070 super_m->method_holder(), | |
| 4071 super_m->method_holder(), | |
| 4072 super_m->access_flags(), false)) | |
| 4073 // this class can access super final method and therefore override | |
| 4074 ) { | |
| 4075 ResourceMark rm(THREAD); | |
| 4076 Exceptions::fthrow( | |
| 4077 THREAD_AND_LOCATION, | |
|
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4078 vmSymbols::java_lang_VerifyError(), |
| 0 | 4079 "class %s overrides final method %s.%s", |
| 4080 this_klass->external_name(), | |
| 4081 name->as_C_string(), | |
| 4082 signature->as_C_string() | |
| 4083 ); | |
| 4084 return; | |
| 4085 } | |
| 4086 | |
| 4087 // continue to look from super_m's holder's super. | |
| 4088 k = instanceKlass::cast(super_m->method_holder())->super(); | |
| 4089 continue; | |
| 4090 } | |
| 4091 | |
| 4092 k = k->klass_part()->super(); | |
| 4093 } | |
| 4094 } | |
| 4095 } | |
| 4096 } | |
| 4097 | |
| 4098 | |
| 4099 // assumes that this_klass is an interface | |
| 4100 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
| 4101 assert(this_klass->is_interface(), "not an interface"); | |
| 4102 objArrayHandle methods (THREAD, this_klass->methods()); | |
| 4103 int num_methods = methods->length(); | |
| 4104 | |
| 4105 for (int index = 0; index < num_methods; index++) { | |
| 4106 methodOop m = (methodOop)methods->obj_at(index); | |
| 4107 // if m is static and not the init method, throw a verify error | |
| 4108 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
| 4109 ResourceMark rm(THREAD); | |
| 4110 Exceptions::fthrow( | |
| 4111 THREAD_AND_LOCATION, | |
|
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4112 vmSymbols::java_lang_VerifyError(), |
| 0 | 4113 "Illegal static method %s in interface %s", |
| 4114 m->name()->as_C_string(), | |
| 4115 this_klass->external_name() | |
| 4116 ); | |
| 4117 return; | |
| 4118 } | |
| 4119 } | |
| 4120 } | |
| 4121 | |
| 4122 // utility methods for format checking | |
| 4123 | |
| 4124 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
| 4125 if (!_need_verify) { return; } | |
| 4126 | |
| 4127 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
| 4128 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
| 4129 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4130 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
| 4131 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
| 4132 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
| 4133 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4134 | |
| 4135 if ((is_abstract && is_final) || | |
| 4136 (is_interface && !is_abstract) || | |
| 4137 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
| 4138 (!is_interface && major_gte_15 && is_annotation)) { | |
| 4139 ResourceMark rm(THREAD); | |
| 4140 Exceptions::fthrow( | |
| 4141 THREAD_AND_LOCATION, | |
|
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4142 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4143 "Illegal class modifiers in class %s: 0x%X", |
| 4144 _class_name->as_C_string(), flags | |
| 4145 ); | |
| 4146 return; | |
| 4147 } | |
| 4148 } | |
| 4149 | |
| 4150 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
| 4151 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4152 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
| 4153 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4154 | |
| 4155 return ((is_public && is_protected) || | |
| 4156 (is_public && is_private) || | |
| 4157 (is_protected && is_private)); | |
| 4158 } | |
| 4159 | |
| 4160 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
|
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4161 u2 max_version = |
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4162 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
|
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|
4163 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
| 0 | 4164 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
|
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4165 (major <= max_version) && |
|
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4166 ((major != max_version) || |
| 0 | 4167 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
| 4168 } | |
| 4169 | |
| 4170 void ClassFileParser::verify_legal_field_modifiers( | |
| 4171 jint flags, bool is_interface, TRAPS) { | |
| 4172 if (!_need_verify) { return; } | |
| 4173 | |
| 4174 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4175 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
| 4176 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4177 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
| 4178 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4179 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
| 4180 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
| 4181 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
| 4182 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4183 | |
| 4184 bool is_illegal = false; | |
| 4185 | |
| 4186 if (is_interface) { | |
| 4187 if (!is_public || !is_static || !is_final || is_private || | |
| 4188 is_protected || is_volatile || is_transient || | |
| 4189 (major_gte_15 && is_enum)) { | |
| 4190 is_illegal = true; | |
| 4191 } | |
| 4192 } else { // not interface | |
| 4193 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
| 4194 is_illegal = true; | |
| 4195 } | |
| 4196 } | |
| 4197 | |
| 4198 if (is_illegal) { | |
| 4199 ResourceMark rm(THREAD); | |
| 4200 Exceptions::fthrow( | |
| 4201 THREAD_AND_LOCATION, | |
|
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4202 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4203 "Illegal field modifiers in class %s: 0x%X", |
| 4204 _class_name->as_C_string(), flags); | |
| 4205 return; | |
| 4206 } | |
| 4207 } | |
| 4208 | |
| 4209 void ClassFileParser::verify_legal_method_modifiers( | |
|
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4210 jint flags, bool is_interface, Symbol* name, TRAPS) { |
| 0 | 4211 if (!_need_verify) { return; } |
| 4212 | |
| 4213 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
| 4214 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
| 4215 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
| 4216 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
| 4217 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
| 4218 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
| 4219 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
| 4220 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
| 4221 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
| 4222 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
| 4223 const bool is_initializer = (name == vmSymbols::object_initializer_name()); | |
| 4224 | |
| 4225 bool is_illegal = false; | |
| 4226 | |
| 4227 if (is_interface) { | |
| 4228 if (!is_abstract || !is_public || is_static || is_final || | |
| 4229 is_native || (major_gte_15 && (is_synchronized || is_strict))) { | |
| 4230 is_illegal = true; | |
| 4231 } | |
| 4232 } else { // not interface | |
| 4233 if (is_initializer) { | |
| 4234 if (is_static || is_final || is_synchronized || is_native || | |
| 4235 is_abstract || (major_gte_15 && is_bridge)) { | |
| 4236 is_illegal = true; | |
| 4237 } | |
| 4238 } else { // not initializer | |
| 4239 if (is_abstract) { | |
| 4240 if ((is_final || is_native || is_private || is_static || | |
| 4241 (major_gte_15 && (is_synchronized || is_strict)))) { | |
| 4242 is_illegal = true; | |
| 4243 } | |
| 4244 } | |
| 4245 if (has_illegal_visibility(flags)) { | |
| 4246 is_illegal = true; | |
| 4247 } | |
| 4248 } | |
| 4249 } | |
| 4250 | |
| 4251 if (is_illegal) { | |
| 4252 ResourceMark rm(THREAD); | |
| 4253 Exceptions::fthrow( | |
| 4254 THREAD_AND_LOCATION, | |
|
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|
4255 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4256 "Method %s in class %s has illegal modifiers: 0x%X", |
| 4257 name->as_C_string(), _class_name->as_C_string(), flags); | |
| 4258 return; | |
| 4259 } | |
| 4260 } | |
| 4261 | |
| 4262 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
| 4263 assert(_need_verify, "only called when _need_verify is true"); | |
| 4264 int i = 0; | |
| 4265 int count = length >> 2; | |
| 4266 for (int k=0; k<count; k++) { | |
| 4267 unsigned char b0 = buffer[i]; | |
| 4268 unsigned char b1 = buffer[i+1]; | |
| 4269 unsigned char b2 = buffer[i+2]; | |
| 4270 unsigned char b3 = buffer[i+3]; | |
| 4271 // For an unsigned char v, | |
| 4272 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
| 4273 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
| 4274 unsigned char res = b0 | b0 - 1 | | |
| 4275 b1 | b1 - 1 | | |
| 4276 b2 | b2 - 1 | | |
| 4277 b3 | b3 - 1; | |
| 4278 if (res >= 128) break; | |
| 4279 i += 4; | |
| 4280 } | |
| 4281 for(; i < length; i++) { | |
| 4282 unsigned short c; | |
| 4283 // no embedded zeros | |
| 4284 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4285 if(buffer[i] < 128) { | |
| 4286 continue; | |
| 4287 } | |
| 4288 if ((i + 5) < length) { // see if it's legal supplementary character | |
| 4289 if (UTF8::is_supplementary_character(&buffer[i])) { | |
| 4290 c = UTF8::get_supplementary_character(&buffer[i]); | |
| 4291 i += 5; | |
| 4292 continue; | |
| 4293 } | |
| 4294 } | |
| 4295 switch (buffer[i] >> 4) { | |
| 4296 default: break; | |
| 4297 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
| 4298 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4299 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
| 4300 c = (buffer[i] & 0x1F) << 6; | |
| 4301 i++; | |
| 4302 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
| 4303 c += buffer[i] & 0x3F; | |
| 4304 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
| 4305 // for classes with major > 47, c must a null or a character in its shortest form | |
| 4306 break; | |
| 4307 } | |
| 4308 } | |
| 4309 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4310 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
| 4311 c = (buffer[i] & 0xF) << 12; | |
| 4312 i += 2; | |
| 4313 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
| 4314 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
| 4315 if (_major_version <= 47 || c >= 0x800) { | |
| 4316 // for classes with major > 47, c must be in its shortest form | |
| 4317 break; | |
| 4318 } | |
| 4319 } | |
| 4320 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
| 4321 } // end of switch | |
| 4322 } // end of for | |
| 4323 } | |
| 4324 | |
| 4325 // Checks if name is a legal class name. | |
|
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4326 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
| 0 | 4327 if (!_need_verify || _relax_verify) { return; } |
| 4328 | |
| 4329 char buf[fixed_buffer_size]; | |
| 4330 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4331 unsigned int length = name->utf8_length(); | |
| 4332 bool legal = false; | |
| 4333 | |
| 4334 if (length > 0) { | |
| 4335 char* p; | |
| 4336 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
| 4337 p = skip_over_field_signature(bytes, false, length, CHECK); | |
| 4338 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4339 } else if (_major_version < JAVA_1_5_VERSION) { | |
| 4340 if (bytes[0] != '<') { | |
| 4341 p = skip_over_field_name(bytes, true, length); | |
| 4342 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4343 } | |
| 4344 } else { | |
| 4345 // 4900761: relax the constraints based on JSR202 spec | |
| 4346 // Class names may be drawn from the entire Unicode character set. | |
| 4347 // Identifiers between '/' must be unqualified names. | |
| 4348 // The utf8 string has been verified when parsing cpool entries. | |
| 4349 legal = verify_unqualified_name(bytes, length, LegalClass); | |
| 4350 } | |
| 4351 } | |
| 4352 if (!legal) { | |
| 4353 ResourceMark rm(THREAD); | |
| 4354 Exceptions::fthrow( | |
| 4355 THREAD_AND_LOCATION, | |
|
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4356 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4357 "Illegal class name \"%s\" in class file %s", bytes, |
| 4358 _class_name->as_C_string() | |
| 4359 ); | |
| 4360 return; | |
| 4361 } | |
| 4362 } | |
| 4363 | |
| 4364 // Checks if name is a legal field name. | |
|
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4365 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
| 0 | 4366 if (!_need_verify || _relax_verify) { return; } |
| 4367 | |
| 4368 char buf[fixed_buffer_size]; | |
| 4369 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4370 unsigned int length = name->utf8_length(); | |
| 4371 bool legal = false; | |
| 4372 | |
| 4373 if (length > 0) { | |
| 4374 if (_major_version < JAVA_1_5_VERSION) { | |
| 4375 if (bytes[0] != '<') { | |
| 4376 char* p = skip_over_field_name(bytes, false, length); | |
| 4377 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4378 } | |
| 4379 } else { | |
| 4380 // 4881221: relax the constraints based on JSR202 spec | |
| 4381 legal = verify_unqualified_name(bytes, length, LegalField); | |
| 4382 } | |
| 4383 } | |
| 4384 | |
| 4385 if (!legal) { | |
| 4386 ResourceMark rm(THREAD); | |
| 4387 Exceptions::fthrow( | |
| 4388 THREAD_AND_LOCATION, | |
|
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4389 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4390 "Illegal field name \"%s\" in class %s", bytes, |
| 4391 _class_name->as_C_string() | |
| 4392 ); | |
| 4393 return; | |
| 4394 } | |
| 4395 } | |
| 4396 | |
| 4397 // Checks if name is a legal method name. | |
|
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4398 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
| 0 | 4399 if (!_need_verify || _relax_verify) { return; } |
| 4400 | |
|
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4401 assert(name != NULL, "method name is null"); |
| 0 | 4402 char buf[fixed_buffer_size]; |
| 4403 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4404 unsigned int length = name->utf8_length(); | |
| 4405 bool legal = false; | |
| 4406 | |
| 4407 if (length > 0) { | |
| 4408 if (bytes[0] == '<') { | |
| 4409 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
| 4410 legal = true; | |
| 4411 } | |
| 4412 } else if (_major_version < JAVA_1_5_VERSION) { | |
| 4413 char* p; | |
| 4414 p = skip_over_field_name(bytes, false, length); | |
| 4415 legal = (p != NULL) && ((p - bytes) == (int)length); | |
| 4416 } else { | |
| 4417 // 4881221: relax the constraints based on JSR202 spec | |
| 4418 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
| 4419 } | |
| 4420 } | |
| 4421 | |
| 4422 if (!legal) { | |
| 4423 ResourceMark rm(THREAD); | |
| 4424 Exceptions::fthrow( | |
| 4425 THREAD_AND_LOCATION, | |
|
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4426 vmSymbols::java_lang_ClassFormatError(), |
| 0 | 4427 "Illegal method name \"%s\" in class %s", bytes, |
| 4428 _class_name->as_C_string() | |
| 4429 ); | |
| 4430 return; | |
| 4431 } | |
| 4432 } | |
| 4433 | |
| 4434 | |
| 4435 // Checks if signature is a legal field signature. | |
|
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4436 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 4437 if (!_need_verify) { return; } |
| 4438 | |
| 4439 char buf[fixed_buffer_size]; | |
| 4440 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4441 unsigned int length = signature->utf8_length(); | |
| 4442 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
| 4443 | |
| 4444 if (p == NULL || (p - bytes) != (int)length) { | |
|
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4445 throwIllegalSignature("Field", name, signature, CHECK); |
| 0 | 4446 } |
| 4447 } | |
| 4448 | |
| 4449 // Checks if signature is a legal method signature. | |
| 4450 // Returns number of parameters | |
|
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4451 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
| 0 | 4452 if (!_need_verify) { |
| 4453 // make sure caller's args_size will be less than 0 even for non-static | |
| 4454 // method so it will be recomputed in compute_size_of_parameters(). | |
| 4455 return -2; | |
| 4456 } | |
| 4457 | |
| 4458 unsigned int args_size = 0; | |
| 4459 char buf[fixed_buffer_size]; | |
| 4460 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
| 4461 unsigned int length = signature->utf8_length(); | |
| 4462 char* nextp; | |
| 4463 | |
| 4464 // The first character must be a '(' | |
| 4465 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
| 4466 length--; | |
| 4467 // Skip over legal field signatures | |
| 4468 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
| 4469 while ((length > 0) && (nextp != NULL)) { | |
| 4470 args_size++; | |
| 4471 if (p[0] == 'J' || p[0] == 'D') { | |
| 4472 args_size++; | |
| 4473 } | |
| 4474 length -= nextp - p; | |
| 4475 p = nextp; | |
| 4476 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
| 4477 } | |
| 4478 // The first non-signature thing better be a ')' | |
| 4479 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
| 4480 length--; | |
| 4481 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
| 4482 // All internal methods must return void | |
| 4483 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
| 4484 return args_size; | |
| 4485 } | |
| 4486 } else { | |
| 4487 // Now we better just have a return value | |
| 4488 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
| 4489 if (nextp && ((int)length == (nextp - p))) { | |
| 4490 return args_size; | |
| 4491 } | |
| 4492 } | |
| 4493 } | |
| 4494 } | |
| 4495 // Report error | |
|
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4496 throwIllegalSignature("Method", name, signature, CHECK_0); |
| 0 | 4497 return 0; |
| 4498 } | |
| 4499 | |
| 4500 | |
|
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4501 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
|
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4502 // Method names also may not contain the characters '<' or '>', unless <init> |
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4503 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
|
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4504 // method. Because these names have been checked as special cases before |
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4505 // calling this method in verify_legal_method_name. |
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4506 bool ClassFileParser::verify_unqualified_name( |
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4507 char* name, unsigned int length, int type) { |
| 0 | 4508 jchar ch; |
| 4509 | |
| 4510 for (char* p = name; p != name + length; ) { | |
| 4511 ch = *p; | |
| 4512 if (ch < 128) { | |
| 4513 p++; | |
|
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4514 if (ch == '.' || ch == ';' || ch == '[' ) { |
|
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|
4515 return false; // do not permit '.', ';', or '[' |
| 0 | 4516 } |
| 4517 if (type != LegalClass && ch == '/') { | |
| 4518 return false; // do not permit '/' unless it's class name | |
| 4519 } | |
| 4520 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
| 4521 return false; // do not permit '<' or '>' in method names | |
| 4522 } | |
| 4523 } else { | |
| 4524 char* tmp_p = UTF8::next(p, &ch); | |
| 4525 p = tmp_p; | |
| 4526 } | |
| 4527 } | |
| 4528 return true; | |
| 4529 } | |
| 4530 | |
| 4531 | |
| 4532 // Take pointer to a string. Skip over the longest part of the string that could | |
| 4533 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
| 4534 // Return a pointer to just past the fieldname. | |
| 4535 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
| 4536 // being true, we saw consecutive slashes (meaning we were looking for a | |
| 4537 // qualified path but found something that was badly-formed). | |
| 4538 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
| 4539 char* p; | |
| 4540 jchar ch; | |
| 4541 jboolean last_is_slash = false; | |
| 4542 jboolean not_first_ch = false; | |
| 4543 | |
| 4544 for (p = name; p != name + length; not_first_ch = true) { | |
| 4545 char* old_p = p; | |
| 4546 ch = *p; | |
| 4547 if (ch < 128) { | |
| 4548 p++; | |
| 4549 // quick check for ascii | |
| 4550 if ((ch >= 'a' && ch <= 'z') || | |
| 4551 (ch >= 'A' && ch <= 'Z') || | |
| 4552 (ch == '_' || ch == '$') || | |
| 4553 (not_first_ch && ch >= '0' && ch <= '9')) { | |
| 4554 last_is_slash = false; | |
| 4555 continue; | |
| 4556 } | |
| 4557 if (slash_ok && ch == '/') { | |
| 4558 if (last_is_slash) { | |
| 4559 return NULL; // Don't permit consecutive slashes | |
| 4560 } | |
| 4561 last_is_slash = true; | |
| 4562 continue; | |
| 4563 } | |
| 4564 } else { | |
| 4565 jint unicode_ch; | |
| 4566 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
| 4567 p = tmp_p; | |
| 4568 last_is_slash = false; | |
| 4569 // Check if ch is Java identifier start or is Java identifier part | |
| 4570 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
| 4571 EXCEPTION_MARK; | |
| 1142 | 4572 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
| 0 | 4573 |
| 4574 // return value | |
| 4575 JavaValue result(T_BOOLEAN); | |
| 4576 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
| 4577 JavaCallArguments args; | |
| 4578 args.push_int(unicode_ch); | |
| 4579 | |
| 4580 // public static boolean isJavaIdentifierStart(char ch); | |
| 4581 JavaCalls::call_static(&result, | |
| 4582 klass, | |
|
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4583 vmSymbols::isJavaIdentifierStart_name(), |
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4584 vmSymbols::int_bool_signature(), |
| 0 | 4585 &args, |
| 4586 THREAD); | |
| 4587 | |
| 4588 if (HAS_PENDING_EXCEPTION) { | |
| 4589 CLEAR_PENDING_EXCEPTION; | |
| 4590 return 0; | |
| 4591 } | |
| 4592 if (result.get_jboolean()) { | |
| 4593 continue; | |
| 4594 } | |
| 4595 | |
| 4596 if (not_first_ch) { | |
| 4597 // public static boolean isJavaIdentifierPart(char ch); | |
| 4598 JavaCalls::call_static(&result, | |
| 4599 klass, | |
|
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4600 vmSymbols::isJavaIdentifierPart_name(), |
|
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|
4601 vmSymbols::int_bool_signature(), |
| 0 | 4602 &args, |
| 4603 THREAD); | |
| 4604 | |
| 4605 if (HAS_PENDING_EXCEPTION) { | |
| 4606 CLEAR_PENDING_EXCEPTION; | |
| 4607 return 0; | |
| 4608 } | |
| 4609 | |
| 4610 if (result.get_jboolean()) { | |
| 4611 continue; | |
| 4612 } | |
| 4613 } | |
| 4614 } | |
| 4615 return (not_first_ch) ? old_p : NULL; | |
| 4616 } | |
| 4617 return (not_first_ch) ? p : NULL; | |
| 4618 } | |
| 4619 | |
| 4620 | |
| 4621 // Take pointer to a string. Skip over the longest part of the string that could | |
| 4622 // be taken as a field signature. Allow "void" if void_ok. | |
| 4623 // Return a pointer to just past the signature. | |
| 4624 // Return NULL if no legal signature is found. | |
| 4625 char* ClassFileParser::skip_over_field_signature(char* signature, | |
| 4626 bool void_ok, | |
| 4627 unsigned int length, | |
| 4628 TRAPS) { | |
| 4629 unsigned int array_dim = 0; | |
| 4630 while (length > 0) { | |
| 4631 switch (signature[0]) { | |
| 4632 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
| 4633 case JVM_SIGNATURE_BOOLEAN: | |
| 4634 case JVM_SIGNATURE_BYTE: | |
| 4635 case JVM_SIGNATURE_CHAR: | |
| 4636 case JVM_SIGNATURE_SHORT: | |
| 4637 case JVM_SIGNATURE_INT: | |
| 4638 case JVM_SIGNATURE_FLOAT: | |
| 4639 case JVM_SIGNATURE_LONG: | |
| 4640 case JVM_SIGNATURE_DOUBLE: | |
| 4641 return signature + 1; | |
| 4642 case JVM_SIGNATURE_CLASS: { | |
| 4643 if (_major_version < JAVA_1_5_VERSION) { | |
| 4644 // Skip over the class name if one is there | |
| 4645 char* p = skip_over_field_name(signature + 1, true, --length); | |
| 4646 | |
| 4647 // The next character better be a semicolon | |
| 4648 if (p && (p - signature) > 1 && p[0] == ';') { | |
| 4649 return p + 1; | |
| 4650 } | |
| 4651 } else { | |
| 4652 // 4900761: For class version > 48, any unicode is allowed in class name. | |
| 4653 length--; | |
| 4654 signature++; | |
| 4655 while (length > 0 && signature[0] != ';') { | |
| 4656 if (signature[0] == '.') { | |
| 4657 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
| 4658 } | |
| 4659 length--; | |
| 4660 signature++; | |
| 4661 } | |
| 4662 if (signature[0] == ';') { return signature + 1; } | |
| 4663 } | |
| 4664 | |
| 4665 return NULL; | |
| 4666 } | |
| 4667 case JVM_SIGNATURE_ARRAY: | |
| 4668 array_dim++; | |
| 4669 if (array_dim > 255) { | |
| 4670 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
| 4671 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
| 4672 } | |
| 4673 // The rest of what's there better be a legal signature | |
| 4674 signature++; | |
| 4675 length--; | |
| 4676 void_ok = false; | |
| 4677 break; | |
| 4678 | |
| 4679 default: | |
| 4680 return NULL; | |
| 4681 } | |
| 4682 } | |
| 4683 return NULL; | |
| 4684 } |