Fri, 29 Apr 2016 00:06:10 +0800
Added MIPS 64-bit port.
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | #include "precompiled.hpp" |
aoqi@0 | 26 | #include "classfile/classFileParser.hpp" |
aoqi@0 | 27 | #include "classfile/classLoader.hpp" |
aoqi@0 | 28 | #include "classfile/classLoaderData.hpp" |
aoqi@0 | 29 | #include "classfile/classLoaderData.inline.hpp" |
aoqi@0 | 30 | #include "classfile/defaultMethods.hpp" |
aoqi@0 | 31 | #include "classfile/javaClasses.hpp" |
aoqi@0 | 32 | #include "classfile/symbolTable.hpp" |
aoqi@0 | 33 | #include "classfile/systemDictionary.hpp" |
aoqi@0 | 34 | #include "classfile/verificationType.hpp" |
aoqi@0 | 35 | #include "classfile/verifier.hpp" |
aoqi@0 | 36 | #include "classfile/vmSymbols.hpp" |
aoqi@0 | 37 | #include "memory/allocation.hpp" |
aoqi@0 | 38 | #include "memory/gcLocker.hpp" |
aoqi@0 | 39 | #include "memory/metadataFactory.hpp" |
aoqi@0 | 40 | #include "memory/oopFactory.hpp" |
aoqi@0 | 41 | #include "memory/referenceType.hpp" |
aoqi@0 | 42 | #include "memory/universe.inline.hpp" |
aoqi@0 | 43 | #include "oops/constantPool.hpp" |
aoqi@0 | 44 | #include "oops/fieldStreams.hpp" |
aoqi@0 | 45 | #include "oops/instanceKlass.hpp" |
aoqi@0 | 46 | #include "oops/instanceMirrorKlass.hpp" |
aoqi@0 | 47 | #include "oops/klass.inline.hpp" |
aoqi@0 | 48 | #include "oops/klassVtable.hpp" |
aoqi@0 | 49 | #include "oops/method.hpp" |
aoqi@0 | 50 | #include "oops/symbol.hpp" |
aoqi@0 | 51 | #include "prims/jvm.h" |
aoqi@0 | 52 | #include "prims/jvmtiExport.hpp" |
aoqi@0 | 53 | #include "prims/jvmtiThreadState.hpp" |
aoqi@0 | 54 | #include "runtime/javaCalls.hpp" |
aoqi@0 | 55 | #include "runtime/perfData.hpp" |
aoqi@0 | 56 | #include "runtime/reflection.hpp" |
aoqi@0 | 57 | #include "runtime/signature.hpp" |
aoqi@0 | 58 | #include "runtime/timer.hpp" |
aoqi@0 | 59 | #include "services/classLoadingService.hpp" |
aoqi@0 | 60 | #include "services/threadService.hpp" |
aoqi@0 | 61 | #include "utilities/array.hpp" |
aoqi@0 | 62 | #include "utilities/globalDefinitions.hpp" |
aoqi@0 | 63 | |
aoqi@0 | 64 | // We generally try to create the oops directly when parsing, rather than |
aoqi@0 | 65 | // allocating temporary data structures and copying the bytes twice. A |
aoqi@0 | 66 | // temporary area is only needed when parsing utf8 entries in the constant |
aoqi@0 | 67 | // pool and when parsing line number tables. |
aoqi@0 | 68 | |
aoqi@0 | 69 | // We add assert in debug mode when class format is not checked. |
aoqi@0 | 70 | |
aoqi@0 | 71 | #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE |
aoqi@0 | 72 | #define JAVA_MIN_SUPPORTED_VERSION 45 |
aoqi@0 | 73 | #define JAVA_MAX_SUPPORTED_VERSION 52 |
aoqi@0 | 74 | #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
aoqi@0 | 75 | |
aoqi@0 | 76 | // Used for two backward compatibility reasons: |
aoqi@0 | 77 | // - to check for new additions to the class file format in JDK1.5 |
aoqi@0 | 78 | // - to check for bug fixes in the format checker in JDK1.5 |
aoqi@0 | 79 | #define JAVA_1_5_VERSION 49 |
aoqi@0 | 80 | |
aoqi@0 | 81 | // Used for backward compatibility reasons: |
aoqi@0 | 82 | // - to check for javac bug fixes that happened after 1.5 |
aoqi@0 | 83 | // - also used as the max version when running in jdk6 |
aoqi@0 | 84 | #define JAVA_6_VERSION 50 |
aoqi@0 | 85 | |
aoqi@0 | 86 | // Used for backward compatibility reasons: |
aoqi@0 | 87 | // - to check NameAndType_info signatures more aggressively |
aoqi@0 | 88 | #define JAVA_7_VERSION 51 |
aoqi@0 | 89 | |
aoqi@0 | 90 | // Extension method support. |
aoqi@0 | 91 | #define JAVA_8_VERSION 52 |
aoqi@0 | 92 | |
aoqi@0 | 93 | void ClassFileParser::parse_constant_pool_entries(int length, TRAPS) { |
aoqi@0 | 94 | // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
aoqi@0 | 95 | // this function (_current can be allocated in a register, with scalar |
aoqi@0 | 96 | // replacement of aggregates). The _current pointer is copied back to |
aoqi@0 | 97 | // stream() when this function returns. DON'T call another method within |
aoqi@0 | 98 | // this method that uses stream(). |
aoqi@0 | 99 | ClassFileStream* cfs0 = stream(); |
aoqi@0 | 100 | ClassFileStream cfs1 = *cfs0; |
aoqi@0 | 101 | ClassFileStream* cfs = &cfs1; |
aoqi@0 | 102 | #ifdef ASSERT |
aoqi@0 | 103 | assert(cfs->allocated_on_stack(),"should be local"); |
aoqi@0 | 104 | u1* old_current = cfs0->current(); |
aoqi@0 | 105 | #endif |
aoqi@0 | 106 | Handle class_loader(THREAD, _loader_data->class_loader()); |
aoqi@0 | 107 | |
aoqi@0 | 108 | // Used for batching symbol allocations. |
aoqi@0 | 109 | const char* names[SymbolTable::symbol_alloc_batch_size]; |
aoqi@0 | 110 | int lengths[SymbolTable::symbol_alloc_batch_size]; |
aoqi@0 | 111 | int indices[SymbolTable::symbol_alloc_batch_size]; |
aoqi@0 | 112 | unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; |
aoqi@0 | 113 | int names_count = 0; |
aoqi@0 | 114 | |
aoqi@0 | 115 | // parsing Index 0 is unused |
aoqi@0 | 116 | for (int index = 1; index < length; index++) { |
aoqi@0 | 117 | // Each of the following case guarantees one more byte in the stream |
aoqi@0 | 118 | // for the following tag or the access_flags following constant pool, |
aoqi@0 | 119 | // so we don't need bounds-check for reading tag. |
aoqi@0 | 120 | u1 tag = cfs->get_u1_fast(); |
aoqi@0 | 121 | switch (tag) { |
aoqi@0 | 122 | case JVM_CONSTANT_Class : |
aoqi@0 | 123 | { |
aoqi@0 | 124 | cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags |
aoqi@0 | 125 | u2 name_index = cfs->get_u2_fast(); |
aoqi@0 | 126 | _cp->klass_index_at_put(index, name_index); |
aoqi@0 | 127 | } |
aoqi@0 | 128 | break; |
aoqi@0 | 129 | case JVM_CONSTANT_Fieldref : |
aoqi@0 | 130 | { |
aoqi@0 | 131 | cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags |
aoqi@0 | 132 | u2 class_index = cfs->get_u2_fast(); |
aoqi@0 | 133 | u2 name_and_type_index = cfs->get_u2_fast(); |
aoqi@0 | 134 | _cp->field_at_put(index, class_index, name_and_type_index); |
aoqi@0 | 135 | } |
aoqi@0 | 136 | break; |
aoqi@0 | 137 | case JVM_CONSTANT_Methodref : |
aoqi@0 | 138 | { |
aoqi@0 | 139 | cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags |
aoqi@0 | 140 | u2 class_index = cfs->get_u2_fast(); |
aoqi@0 | 141 | u2 name_and_type_index = cfs->get_u2_fast(); |
aoqi@0 | 142 | _cp->method_at_put(index, class_index, name_and_type_index); |
aoqi@0 | 143 | } |
aoqi@0 | 144 | break; |
aoqi@0 | 145 | case JVM_CONSTANT_InterfaceMethodref : |
aoqi@0 | 146 | { |
aoqi@0 | 147 | cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags |
aoqi@0 | 148 | u2 class_index = cfs->get_u2_fast(); |
aoqi@0 | 149 | u2 name_and_type_index = cfs->get_u2_fast(); |
aoqi@0 | 150 | _cp->interface_method_at_put(index, class_index, name_and_type_index); |
aoqi@0 | 151 | } |
aoqi@0 | 152 | break; |
aoqi@0 | 153 | case JVM_CONSTANT_String : |
aoqi@0 | 154 | { |
aoqi@0 | 155 | cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags |
aoqi@0 | 156 | u2 string_index = cfs->get_u2_fast(); |
aoqi@0 | 157 | _cp->string_index_at_put(index, string_index); |
aoqi@0 | 158 | } |
aoqi@0 | 159 | break; |
aoqi@0 | 160 | case JVM_CONSTANT_MethodHandle : |
aoqi@0 | 161 | case JVM_CONSTANT_MethodType : |
aoqi@0 | 162 | if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
aoqi@0 | 163 | classfile_parse_error( |
aoqi@0 | 164 | "Class file version does not support constant tag %u in class file %s", |
aoqi@0 | 165 | tag, CHECK); |
aoqi@0 | 166 | } |
aoqi@0 | 167 | if (!EnableInvokeDynamic) { |
aoqi@0 | 168 | classfile_parse_error( |
aoqi@0 | 169 | "This JVM does not support constant tag %u in class file %s", |
aoqi@0 | 170 | tag, CHECK); |
aoqi@0 | 171 | } |
aoqi@0 | 172 | if (tag == JVM_CONSTANT_MethodHandle) { |
aoqi@0 | 173 | cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags |
aoqi@0 | 174 | u1 ref_kind = cfs->get_u1_fast(); |
aoqi@0 | 175 | u2 method_index = cfs->get_u2_fast(); |
aoqi@0 | 176 | _cp->method_handle_index_at_put(index, ref_kind, method_index); |
aoqi@0 | 177 | } else if (tag == JVM_CONSTANT_MethodType) { |
aoqi@0 | 178 | cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags |
aoqi@0 | 179 | u2 signature_index = cfs->get_u2_fast(); |
aoqi@0 | 180 | _cp->method_type_index_at_put(index, signature_index); |
aoqi@0 | 181 | } else { |
aoqi@0 | 182 | ShouldNotReachHere(); |
aoqi@0 | 183 | } |
aoqi@0 | 184 | break; |
aoqi@0 | 185 | case JVM_CONSTANT_InvokeDynamic : |
aoqi@0 | 186 | { |
aoqi@0 | 187 | if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
aoqi@0 | 188 | classfile_parse_error( |
aoqi@0 | 189 | "Class file version does not support constant tag %u in class file %s", |
aoqi@0 | 190 | tag, CHECK); |
aoqi@0 | 191 | } |
aoqi@0 | 192 | if (!EnableInvokeDynamic) { |
aoqi@0 | 193 | classfile_parse_error( |
aoqi@0 | 194 | "This JVM does not support constant tag %u in class file %s", |
aoqi@0 | 195 | tag, CHECK); |
aoqi@0 | 196 | } |
aoqi@0 | 197 | cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
aoqi@0 | 198 | u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
aoqi@0 | 199 | u2 name_and_type_index = cfs->get_u2_fast(); |
aoqi@0 | 200 | if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
aoqi@0 | 201 | _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
aoqi@0 | 202 | _cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
aoqi@0 | 203 | } |
aoqi@0 | 204 | break; |
aoqi@0 | 205 | case JVM_CONSTANT_Integer : |
aoqi@0 | 206 | { |
aoqi@0 | 207 | cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags |
aoqi@0 | 208 | u4 bytes = cfs->get_u4_fast(); |
aoqi@0 | 209 | _cp->int_at_put(index, (jint) bytes); |
aoqi@0 | 210 | } |
aoqi@0 | 211 | break; |
aoqi@0 | 212 | case JVM_CONSTANT_Float : |
aoqi@0 | 213 | { |
aoqi@0 | 214 | cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags |
aoqi@0 | 215 | u4 bytes = cfs->get_u4_fast(); |
aoqi@0 | 216 | _cp->float_at_put(index, *(jfloat*)&bytes); |
aoqi@0 | 217 | } |
aoqi@0 | 218 | break; |
aoqi@0 | 219 | case JVM_CONSTANT_Long : |
aoqi@0 | 220 | // A mangled type might cause you to overrun allocated memory |
aoqi@0 | 221 | guarantee_property(index+1 < length, |
aoqi@0 | 222 | "Invalid constant pool entry %u in class file %s", |
aoqi@0 | 223 | index, CHECK); |
aoqi@0 | 224 | { |
aoqi@0 | 225 | cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags |
aoqi@0 | 226 | u8 bytes = cfs->get_u8_fast(); |
aoqi@0 | 227 | _cp->long_at_put(index, bytes); |
aoqi@0 | 228 | } |
aoqi@0 | 229 | index++; // Skip entry following eigth-byte constant, see JVM book p. 98 |
aoqi@0 | 230 | break; |
aoqi@0 | 231 | case JVM_CONSTANT_Double : |
aoqi@0 | 232 | // A mangled type might cause you to overrun allocated memory |
aoqi@0 | 233 | guarantee_property(index+1 < length, |
aoqi@0 | 234 | "Invalid constant pool entry %u in class file %s", |
aoqi@0 | 235 | index, CHECK); |
aoqi@0 | 236 | { |
aoqi@0 | 237 | cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags |
aoqi@0 | 238 | u8 bytes = cfs->get_u8_fast(); |
aoqi@0 | 239 | _cp->double_at_put(index, *(jdouble*)&bytes); |
aoqi@0 | 240 | } |
aoqi@0 | 241 | index++; // Skip entry following eigth-byte constant, see JVM book p. 98 |
aoqi@0 | 242 | break; |
aoqi@0 | 243 | case JVM_CONSTANT_NameAndType : |
aoqi@0 | 244 | { |
aoqi@0 | 245 | cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags |
aoqi@0 | 246 | u2 name_index = cfs->get_u2_fast(); |
aoqi@0 | 247 | u2 signature_index = cfs->get_u2_fast(); |
aoqi@0 | 248 | _cp->name_and_type_at_put(index, name_index, signature_index); |
aoqi@0 | 249 | } |
aoqi@0 | 250 | break; |
aoqi@0 | 251 | case JVM_CONSTANT_Utf8 : |
aoqi@0 | 252 | { |
aoqi@0 | 253 | cfs->guarantee_more(2, CHECK); // utf8_length |
aoqi@0 | 254 | u2 utf8_length = cfs->get_u2_fast(); |
aoqi@0 | 255 | u1* utf8_buffer = cfs->get_u1_buffer(); |
aoqi@0 | 256 | assert(utf8_buffer != NULL, "null utf8 buffer"); |
aoqi@0 | 257 | // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. |
aoqi@0 | 258 | cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags |
aoqi@0 | 259 | cfs->skip_u1_fast(utf8_length); |
aoqi@0 | 260 | |
aoqi@0 | 261 | // Before storing the symbol, make sure it's legal |
aoqi@0 | 262 | if (_need_verify) { |
aoqi@0 | 263 | verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); |
aoqi@0 | 264 | } |
aoqi@0 | 265 | |
aoqi@0 | 266 | if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
aoqi@0 | 267 | Handle patch = clear_cp_patch_at(index); |
aoqi@0 | 268 | guarantee_property(java_lang_String::is_instance(patch()), |
aoqi@0 | 269 | "Illegal utf8 patch at %d in class file %s", |
aoqi@0 | 270 | index, CHECK); |
aoqi@0 | 271 | char* str = java_lang_String::as_utf8_string(patch()); |
aoqi@0 | 272 | // (could use java_lang_String::as_symbol instead, but might as well batch them) |
aoqi@0 | 273 | utf8_buffer = (u1*) str; |
aoqi@0 | 274 | utf8_length = (int) strlen(str); |
aoqi@0 | 275 | } |
aoqi@0 | 276 | |
aoqi@0 | 277 | unsigned int hash; |
aoqi@0 | 278 | Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
aoqi@0 | 279 | if (result == NULL) { |
aoqi@0 | 280 | names[names_count] = (char*)utf8_buffer; |
aoqi@0 | 281 | lengths[names_count] = utf8_length; |
aoqi@0 | 282 | indices[names_count] = index; |
aoqi@0 | 283 | hashValues[names_count++] = hash; |
aoqi@0 | 284 | if (names_count == SymbolTable::symbol_alloc_batch_size) { |
aoqi@0 | 285 | SymbolTable::new_symbols(_loader_data, _cp, names_count, names, lengths, indices, hashValues, CHECK); |
aoqi@0 | 286 | names_count = 0; |
aoqi@0 | 287 | } |
aoqi@0 | 288 | } else { |
aoqi@0 | 289 | _cp->symbol_at_put(index, result); |
aoqi@0 | 290 | } |
aoqi@0 | 291 | } |
aoqi@0 | 292 | break; |
aoqi@0 | 293 | default: |
aoqi@0 | 294 | classfile_parse_error( |
aoqi@0 | 295 | "Unknown constant tag %u in class file %s", tag, CHECK); |
aoqi@0 | 296 | break; |
aoqi@0 | 297 | } |
aoqi@0 | 298 | } |
aoqi@0 | 299 | |
aoqi@0 | 300 | // Allocate the remaining symbols |
aoqi@0 | 301 | if (names_count > 0) { |
aoqi@0 | 302 | SymbolTable::new_symbols(_loader_data, _cp, names_count, names, lengths, indices, hashValues, CHECK); |
aoqi@0 | 303 | } |
aoqi@0 | 304 | |
aoqi@0 | 305 | // Copy _current pointer of local copy back to stream(). |
aoqi@0 | 306 | #ifdef ASSERT |
aoqi@0 | 307 | assert(cfs0->current() == old_current, "non-exclusive use of stream()"); |
aoqi@0 | 308 | #endif |
aoqi@0 | 309 | cfs0->set_current(cfs1.current()); |
aoqi@0 | 310 | } |
aoqi@0 | 311 | |
aoqi@0 | 312 | bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
aoqi@0 | 313 | |
aoqi@0 | 314 | inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
aoqi@0 | 315 | if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
aoqi@0 | 316 | return cp->symbol_at(index); |
aoqi@0 | 317 | else |
aoqi@0 | 318 | return NULL; |
aoqi@0 | 319 | } |
aoqi@0 | 320 | |
aoqi@0 | 321 | constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) { |
aoqi@0 | 322 | ClassFileStream* cfs = stream(); |
aoqi@0 | 323 | constantPoolHandle nullHandle; |
aoqi@0 | 324 | |
aoqi@0 | 325 | cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag |
aoqi@0 | 326 | u2 length = cfs->get_u2_fast(); |
aoqi@0 | 327 | guarantee_property( |
aoqi@0 | 328 | length >= 1, "Illegal constant pool size %u in class file %s", |
aoqi@0 | 329 | length, CHECK_(nullHandle)); |
aoqi@0 | 330 | ConstantPool* constant_pool = ConstantPool::allocate(_loader_data, length, |
aoqi@0 | 331 | CHECK_(nullHandle)); |
aoqi@0 | 332 | _cp = constant_pool; // save in case of errors |
aoqi@0 | 333 | constantPoolHandle cp (THREAD, constant_pool); |
aoqi@0 | 334 | |
aoqi@0 | 335 | // parsing constant pool entries |
aoqi@0 | 336 | parse_constant_pool_entries(length, CHECK_(nullHandle)); |
aoqi@0 | 337 | |
aoqi@0 | 338 | int index = 1; // declared outside of loops for portability |
aoqi@0 | 339 | |
aoqi@0 | 340 | // first verification pass - validate cross references and fixup class and string constants |
aoqi@0 | 341 | for (index = 1; index < length; index++) { // Index 0 is unused |
aoqi@0 | 342 | jbyte tag = cp->tag_at(index).value(); |
aoqi@0 | 343 | switch (tag) { |
aoqi@0 | 344 | case JVM_CONSTANT_Class : |
aoqi@0 | 345 | ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present |
aoqi@0 | 346 | break; |
aoqi@0 | 347 | case JVM_CONSTANT_Fieldref : |
aoqi@0 | 348 | // fall through |
aoqi@0 | 349 | case JVM_CONSTANT_Methodref : |
aoqi@0 | 350 | // fall through |
aoqi@0 | 351 | case JVM_CONSTANT_InterfaceMethodref : { |
aoqi@0 | 352 | if (!_need_verify) break; |
aoqi@0 | 353 | int klass_ref_index = cp->klass_ref_index_at(index); |
aoqi@0 | 354 | int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); |
aoqi@0 | 355 | check_property(valid_klass_reference_at(klass_ref_index), |
aoqi@0 | 356 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 357 | klass_ref_index, |
aoqi@0 | 358 | CHECK_(nullHandle)); |
aoqi@0 | 359 | check_property(valid_cp_range(name_and_type_ref_index, length) && |
aoqi@0 | 360 | cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
aoqi@0 | 361 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 362 | name_and_type_ref_index, |
aoqi@0 | 363 | CHECK_(nullHandle)); |
aoqi@0 | 364 | break; |
aoqi@0 | 365 | } |
aoqi@0 | 366 | case JVM_CONSTANT_String : |
aoqi@0 | 367 | ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present |
aoqi@0 | 368 | break; |
aoqi@0 | 369 | case JVM_CONSTANT_Integer : |
aoqi@0 | 370 | break; |
aoqi@0 | 371 | case JVM_CONSTANT_Float : |
aoqi@0 | 372 | break; |
aoqi@0 | 373 | case JVM_CONSTANT_Long : |
aoqi@0 | 374 | case JVM_CONSTANT_Double : |
aoqi@0 | 375 | index++; |
aoqi@0 | 376 | check_property( |
aoqi@0 | 377 | (index < length && cp->tag_at(index).is_invalid()), |
aoqi@0 | 378 | "Improper constant pool long/double index %u in class file %s", |
aoqi@0 | 379 | index, CHECK_(nullHandle)); |
aoqi@0 | 380 | break; |
aoqi@0 | 381 | case JVM_CONSTANT_NameAndType : { |
aoqi@0 | 382 | if (!_need_verify) break; |
aoqi@0 | 383 | int name_ref_index = cp->name_ref_index_at(index); |
aoqi@0 | 384 | int signature_ref_index = cp->signature_ref_index_at(index); |
aoqi@0 | 385 | check_property(valid_symbol_at(name_ref_index), |
aoqi@0 | 386 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 387 | name_ref_index, CHECK_(nullHandle)); |
aoqi@0 | 388 | check_property(valid_symbol_at(signature_ref_index), |
aoqi@0 | 389 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 390 | signature_ref_index, CHECK_(nullHandle)); |
aoqi@0 | 391 | break; |
aoqi@0 | 392 | } |
aoqi@0 | 393 | case JVM_CONSTANT_Utf8 : |
aoqi@0 | 394 | break; |
aoqi@0 | 395 | case JVM_CONSTANT_UnresolvedClass : // fall-through |
aoqi@0 | 396 | case JVM_CONSTANT_UnresolvedClassInError: |
aoqi@0 | 397 | ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present |
aoqi@0 | 398 | break; |
aoqi@0 | 399 | case JVM_CONSTANT_ClassIndex : |
aoqi@0 | 400 | { |
aoqi@0 | 401 | int class_index = cp->klass_index_at(index); |
aoqi@0 | 402 | check_property(valid_symbol_at(class_index), |
aoqi@0 | 403 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 404 | class_index, CHECK_(nullHandle)); |
aoqi@0 | 405 | cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); |
aoqi@0 | 406 | } |
aoqi@0 | 407 | break; |
aoqi@0 | 408 | case JVM_CONSTANT_StringIndex : |
aoqi@0 | 409 | { |
aoqi@0 | 410 | int string_index = cp->string_index_at(index); |
aoqi@0 | 411 | check_property(valid_symbol_at(string_index), |
aoqi@0 | 412 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 413 | string_index, CHECK_(nullHandle)); |
aoqi@0 | 414 | Symbol* sym = cp->symbol_at(string_index); |
aoqi@0 | 415 | cp->unresolved_string_at_put(index, sym); |
aoqi@0 | 416 | } |
aoqi@0 | 417 | break; |
aoqi@0 | 418 | case JVM_CONSTANT_MethodHandle : |
aoqi@0 | 419 | { |
aoqi@0 | 420 | int ref_index = cp->method_handle_index_at(index); |
aoqi@0 | 421 | check_property( |
aoqi@0 | 422 | valid_cp_range(ref_index, length) && |
aoqi@0 | 423 | EnableInvokeDynamic, |
aoqi@0 | 424 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 425 | ref_index, CHECK_(nullHandle)); |
aoqi@0 | 426 | constantTag tag = cp->tag_at(ref_index); |
aoqi@0 | 427 | int ref_kind = cp->method_handle_ref_kind_at(index); |
aoqi@0 | 428 | switch (ref_kind) { |
aoqi@0 | 429 | case JVM_REF_getField: |
aoqi@0 | 430 | case JVM_REF_getStatic: |
aoqi@0 | 431 | case JVM_REF_putField: |
aoqi@0 | 432 | case JVM_REF_putStatic: |
aoqi@0 | 433 | check_property( |
aoqi@0 | 434 | tag.is_field(), |
aoqi@0 | 435 | "Invalid constant pool index %u in class file %s (not a field)", |
aoqi@0 | 436 | ref_index, CHECK_(nullHandle)); |
aoqi@0 | 437 | break; |
aoqi@0 | 438 | case JVM_REF_invokeVirtual: |
aoqi@0 | 439 | case JVM_REF_newInvokeSpecial: |
aoqi@0 | 440 | check_property( |
aoqi@0 | 441 | tag.is_method(), |
aoqi@0 | 442 | "Invalid constant pool index %u in class file %s (not a method)", |
aoqi@0 | 443 | ref_index, CHECK_(nullHandle)); |
aoqi@0 | 444 | break; |
aoqi@0 | 445 | case JVM_REF_invokeStatic: |
aoqi@0 | 446 | case JVM_REF_invokeSpecial: |
aoqi@0 | 447 | check_property(tag.is_method() || |
aoqi@0 | 448 | ((_major_version >= JAVA_8_VERSION) && tag.is_interface_method()), |
aoqi@0 | 449 | "Invalid constant pool index %u in class file %s (not a method)", |
aoqi@0 | 450 | ref_index, CHECK_(nullHandle)); |
aoqi@0 | 451 | break; |
aoqi@0 | 452 | case JVM_REF_invokeInterface: |
aoqi@0 | 453 | check_property( |
aoqi@0 | 454 | tag.is_interface_method(), |
aoqi@0 | 455 | "Invalid constant pool index %u in class file %s (not an interface method)", |
aoqi@0 | 456 | ref_index, CHECK_(nullHandle)); |
aoqi@0 | 457 | break; |
aoqi@0 | 458 | default: |
aoqi@0 | 459 | classfile_parse_error( |
aoqi@0 | 460 | "Bad method handle kind at constant pool index %u in class file %s", |
aoqi@0 | 461 | index, CHECK_(nullHandle)); |
aoqi@0 | 462 | } |
aoqi@0 | 463 | // Keep the ref_index unchanged. It will be indirected at link-time. |
aoqi@0 | 464 | } |
aoqi@0 | 465 | break; |
aoqi@0 | 466 | case JVM_CONSTANT_MethodType : |
aoqi@0 | 467 | { |
aoqi@0 | 468 | int ref_index = cp->method_type_index_at(index); |
aoqi@0 | 469 | check_property(valid_symbol_at(ref_index) && EnableInvokeDynamic, |
aoqi@0 | 470 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 471 | ref_index, CHECK_(nullHandle)); |
aoqi@0 | 472 | } |
aoqi@0 | 473 | break; |
aoqi@0 | 474 | case JVM_CONSTANT_InvokeDynamic : |
aoqi@0 | 475 | { |
aoqi@0 | 476 | int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
aoqi@0 | 477 | check_property(valid_cp_range(name_and_type_ref_index, length) && |
aoqi@0 | 478 | cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
aoqi@0 | 479 | "Invalid constant pool index %u in class file %s", |
aoqi@0 | 480 | name_and_type_ref_index, |
aoqi@0 | 481 | CHECK_(nullHandle)); |
aoqi@0 | 482 | // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
aoqi@0 | 483 | break; |
aoqi@0 | 484 | } |
aoqi@0 | 485 | default: |
aoqi@0 | 486 | fatal(err_msg("bad constant pool tag value %u", |
aoqi@0 | 487 | cp->tag_at(index).value())); |
aoqi@0 | 488 | ShouldNotReachHere(); |
aoqi@0 | 489 | break; |
aoqi@0 | 490 | } // end of switch |
aoqi@0 | 491 | } // end of for |
aoqi@0 | 492 | |
aoqi@0 | 493 | if (_cp_patches != NULL) { |
aoqi@0 | 494 | // need to treat this_class specially... |
aoqi@0 | 495 | assert(EnableInvokeDynamic, ""); |
aoqi@0 | 496 | int this_class_index; |
aoqi@0 | 497 | { |
aoqi@0 | 498 | cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
aoqi@0 | 499 | u1* mark = cfs->current(); |
aoqi@0 | 500 | u2 flags = cfs->get_u2_fast(); |
aoqi@0 | 501 | this_class_index = cfs->get_u2_fast(); |
aoqi@0 | 502 | cfs->set_current(mark); // revert to mark |
aoqi@0 | 503 | } |
aoqi@0 | 504 | |
aoqi@0 | 505 | for (index = 1; index < length; index++) { // Index 0 is unused |
aoqi@0 | 506 | if (has_cp_patch_at(index)) { |
aoqi@0 | 507 | guarantee_property(index != this_class_index, |
aoqi@0 | 508 | "Illegal constant pool patch to self at %d in class file %s", |
aoqi@0 | 509 | index, CHECK_(nullHandle)); |
aoqi@0 | 510 | patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
aoqi@0 | 511 | } |
aoqi@0 | 512 | } |
aoqi@0 | 513 | } |
aoqi@0 | 514 | |
aoqi@0 | 515 | if (!_need_verify) { |
aoqi@0 | 516 | return cp; |
aoqi@0 | 517 | } |
aoqi@0 | 518 | |
aoqi@0 | 519 | // second verification pass - checks the strings are of the right format. |
aoqi@0 | 520 | // but not yet to the other entries |
aoqi@0 | 521 | for (index = 1; index < length; index++) { |
aoqi@0 | 522 | jbyte tag = cp->tag_at(index).value(); |
aoqi@0 | 523 | switch (tag) { |
aoqi@0 | 524 | case JVM_CONSTANT_UnresolvedClass: { |
aoqi@0 | 525 | Symbol* class_name = cp->unresolved_klass_at(index); |
aoqi@0 | 526 | // check the name, even if _cp_patches will overwrite it |
aoqi@0 | 527 | verify_legal_class_name(class_name, CHECK_(nullHandle)); |
aoqi@0 | 528 | break; |
aoqi@0 | 529 | } |
aoqi@0 | 530 | case JVM_CONSTANT_NameAndType: { |
aoqi@0 | 531 | if (_need_verify && _major_version >= JAVA_7_VERSION) { |
aoqi@0 | 532 | int sig_index = cp->signature_ref_index_at(index); |
aoqi@0 | 533 | int name_index = cp->name_ref_index_at(index); |
aoqi@0 | 534 | Symbol* name = cp->symbol_at(name_index); |
aoqi@0 | 535 | Symbol* sig = cp->symbol_at(sig_index); |
aoqi@0 | 536 | if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
aoqi@0 | 537 | verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
aoqi@0 | 538 | } else { |
aoqi@0 | 539 | verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
aoqi@0 | 540 | } |
aoqi@0 | 541 | } |
aoqi@0 | 542 | break; |
aoqi@0 | 543 | } |
aoqi@0 | 544 | case JVM_CONSTANT_InvokeDynamic: |
aoqi@0 | 545 | case JVM_CONSTANT_Fieldref: |
aoqi@0 | 546 | case JVM_CONSTANT_Methodref: |
aoqi@0 | 547 | case JVM_CONSTANT_InterfaceMethodref: { |
aoqi@0 | 548 | int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); |
aoqi@0 | 549 | // already verified to be utf8 |
aoqi@0 | 550 | int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); |
aoqi@0 | 551 | // already verified to be utf8 |
aoqi@0 | 552 | int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); |
aoqi@0 | 553 | Symbol* name = cp->symbol_at(name_ref_index); |
aoqi@0 | 554 | Symbol* signature = cp->symbol_at(signature_ref_index); |
aoqi@0 | 555 | if (tag == JVM_CONSTANT_Fieldref) { |
aoqi@0 | 556 | verify_legal_field_name(name, CHECK_(nullHandle)); |
aoqi@0 | 557 | if (_need_verify && _major_version >= JAVA_7_VERSION) { |
aoqi@0 | 558 | // Signature is verified above, when iterating NameAndType_info. |
aoqi@0 | 559 | // Need only to be sure it's the right type. |
aoqi@0 | 560 | if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
aoqi@0 | 561 | throwIllegalSignature( |
aoqi@0 | 562 | "Field", name, signature, CHECK_(nullHandle)); |
aoqi@0 | 563 | } |
aoqi@0 | 564 | } else { |
aoqi@0 | 565 | verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
aoqi@0 | 566 | } |
aoqi@0 | 567 | } else { |
aoqi@0 | 568 | verify_legal_method_name(name, CHECK_(nullHandle)); |
aoqi@0 | 569 | if (_need_verify && _major_version >= JAVA_7_VERSION) { |
aoqi@0 | 570 | // Signature is verified above, when iterating NameAndType_info. |
aoqi@0 | 571 | // Need only to be sure it's the right type. |
aoqi@0 | 572 | if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
aoqi@0 | 573 | throwIllegalSignature( |
aoqi@0 | 574 | "Method", name, signature, CHECK_(nullHandle)); |
aoqi@0 | 575 | } |
aoqi@0 | 576 | } else { |
aoqi@0 | 577 | verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
aoqi@0 | 578 | } |
aoqi@0 | 579 | if (tag == JVM_CONSTANT_Methodref) { |
aoqi@0 | 580 | // 4509014: If a class method name begins with '<', it must be "<init>". |
aoqi@0 | 581 | assert(name != NULL, "method name in constant pool is null"); |
aoqi@0 | 582 | unsigned int name_len = name->utf8_length(); |
aoqi@0 | 583 | assert(name_len > 0, "bad method name"); // already verified as legal name |
aoqi@0 | 584 | if (name->byte_at(0) == '<') { |
aoqi@0 | 585 | if (name != vmSymbols::object_initializer_name()) { |
aoqi@0 | 586 | classfile_parse_error( |
aoqi@0 | 587 | "Bad method name at constant pool index %u in class file %s", |
aoqi@0 | 588 | name_ref_index, CHECK_(nullHandle)); |
aoqi@0 | 589 | } |
aoqi@0 | 590 | } |
aoqi@0 | 591 | } |
aoqi@0 | 592 | } |
aoqi@0 | 593 | break; |
aoqi@0 | 594 | } |
aoqi@0 | 595 | case JVM_CONSTANT_MethodHandle: { |
aoqi@0 | 596 | int ref_index = cp->method_handle_index_at(index); |
aoqi@0 | 597 | int ref_kind = cp->method_handle_ref_kind_at(index); |
aoqi@0 | 598 | switch (ref_kind) { |
aoqi@0 | 599 | case JVM_REF_invokeVirtual: |
aoqi@0 | 600 | case JVM_REF_invokeStatic: |
aoqi@0 | 601 | case JVM_REF_invokeSpecial: |
aoqi@0 | 602 | case JVM_REF_newInvokeSpecial: |
aoqi@0 | 603 | { |
aoqi@0 | 604 | int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); |
aoqi@0 | 605 | int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); |
aoqi@0 | 606 | Symbol* name = cp->symbol_at(name_ref_index); |
aoqi@0 | 607 | if (ref_kind == JVM_REF_newInvokeSpecial) { |
aoqi@0 | 608 | if (name != vmSymbols::object_initializer_name()) { |
aoqi@0 | 609 | classfile_parse_error( |
aoqi@0 | 610 | "Bad constructor name at constant pool index %u in class file %s", |
aoqi@0 | 611 | name_ref_index, CHECK_(nullHandle)); |
aoqi@0 | 612 | } |
aoqi@0 | 613 | } else { |
aoqi@0 | 614 | if (name == vmSymbols::object_initializer_name()) { |
aoqi@0 | 615 | classfile_parse_error( |
aoqi@0 | 616 | "Bad method name at constant pool index %u in class file %s", |
aoqi@0 | 617 | name_ref_index, CHECK_(nullHandle)); |
aoqi@0 | 618 | } |
aoqi@0 | 619 | } |
aoqi@0 | 620 | } |
aoqi@0 | 621 | break; |
aoqi@0 | 622 | // Other ref_kinds are already fully checked in previous pass. |
aoqi@0 | 623 | } |
aoqi@0 | 624 | break; |
aoqi@0 | 625 | } |
aoqi@0 | 626 | case JVM_CONSTANT_MethodType: { |
aoqi@0 | 627 | Symbol* no_name = vmSymbols::type_name(); // place holder |
aoqi@0 | 628 | Symbol* signature = cp->method_type_signature_at(index); |
aoqi@0 | 629 | verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
aoqi@0 | 630 | break; |
aoqi@0 | 631 | } |
aoqi@0 | 632 | case JVM_CONSTANT_Utf8: { |
aoqi@0 | 633 | assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
aoqi@0 | 634 | } |
aoqi@0 | 635 | } // end of switch |
aoqi@0 | 636 | } // end of for |
aoqi@0 | 637 | |
aoqi@0 | 638 | return cp; |
aoqi@0 | 639 | } |
aoqi@0 | 640 | |
aoqi@0 | 641 | |
aoqi@0 | 642 | void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
aoqi@0 | 643 | assert(EnableInvokeDynamic, ""); |
aoqi@0 | 644 | BasicType patch_type = T_VOID; |
aoqi@0 | 645 | |
aoqi@0 | 646 | switch (cp->tag_at(index).value()) { |
aoqi@0 | 647 | |
aoqi@0 | 648 | case JVM_CONSTANT_UnresolvedClass : |
aoqi@0 | 649 | // Patching a class means pre-resolving it. |
aoqi@0 | 650 | // The name in the constant pool is ignored. |
aoqi@0 | 651 | if (java_lang_Class::is_instance(patch())) { |
aoqi@0 | 652 | guarantee_property(!java_lang_Class::is_primitive(patch()), |
aoqi@0 | 653 | "Illegal class patch at %d in class file %s", |
aoqi@0 | 654 | index, CHECK); |
aoqi@0 | 655 | cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
aoqi@0 | 656 | } else { |
aoqi@0 | 657 | guarantee_property(java_lang_String::is_instance(patch()), |
aoqi@0 | 658 | "Illegal class patch at %d in class file %s", |
aoqi@0 | 659 | index, CHECK); |
aoqi@0 | 660 | Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
aoqi@0 | 661 | cp->unresolved_klass_at_put(index, name); |
aoqi@0 | 662 | } |
aoqi@0 | 663 | break; |
aoqi@0 | 664 | |
aoqi@0 | 665 | case JVM_CONSTANT_String : |
aoqi@0 | 666 | // skip this patch and don't clear it. Needs the oop array for resolved |
aoqi@0 | 667 | // references to be created first. |
aoqi@0 | 668 | return; |
aoqi@0 | 669 | |
aoqi@0 | 670 | case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
aoqi@0 | 671 | case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
aoqi@0 | 672 | case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
aoqi@0 | 673 | case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
aoqi@0 | 674 | patch_prim: |
aoqi@0 | 675 | { |
aoqi@0 | 676 | jvalue value; |
aoqi@0 | 677 | BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
aoqi@0 | 678 | guarantee_property(value_type == patch_type, |
aoqi@0 | 679 | "Illegal primitive patch at %d in class file %s", |
aoqi@0 | 680 | index, CHECK); |
aoqi@0 | 681 | switch (value_type) { |
aoqi@0 | 682 | case T_INT: cp->int_at_put(index, value.i); break; |
aoqi@0 | 683 | case T_FLOAT: cp->float_at_put(index, value.f); break; |
aoqi@0 | 684 | case T_LONG: cp->long_at_put(index, value.j); break; |
aoqi@0 | 685 | case T_DOUBLE: cp->double_at_put(index, value.d); break; |
aoqi@0 | 686 | default: assert(false, ""); |
aoqi@0 | 687 | } |
aoqi@0 | 688 | } |
aoqi@0 | 689 | break; |
aoqi@0 | 690 | |
aoqi@0 | 691 | default: |
aoqi@0 | 692 | // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
aoqi@0 | 693 | guarantee_property(!has_cp_patch_at(index), |
aoqi@0 | 694 | "Illegal unexpected patch at %d in class file %s", |
aoqi@0 | 695 | index, CHECK); |
aoqi@0 | 696 | return; |
aoqi@0 | 697 | } |
aoqi@0 | 698 | |
aoqi@0 | 699 | // On fall-through, mark the patch as used. |
aoqi@0 | 700 | clear_cp_patch_at(index); |
aoqi@0 | 701 | } |
aoqi@0 | 702 | |
aoqi@0 | 703 | |
aoqi@0 | 704 | |
aoqi@0 | 705 | class NameSigHash: public ResourceObj { |
aoqi@0 | 706 | public: |
aoqi@0 | 707 | Symbol* _name; // name |
aoqi@0 | 708 | Symbol* _sig; // signature |
aoqi@0 | 709 | NameSigHash* _next; // Next entry in hash table |
aoqi@0 | 710 | }; |
aoqi@0 | 711 | |
aoqi@0 | 712 | |
aoqi@0 | 713 | #define HASH_ROW_SIZE 256 |
aoqi@0 | 714 | |
aoqi@0 | 715 | unsigned int hash(Symbol* name, Symbol* sig) { |
aoqi@0 | 716 | unsigned int raw_hash = 0; |
aoqi@0 | 717 | raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); |
aoqi@0 | 718 | raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; |
aoqi@0 | 719 | |
aoqi@0 | 720 | return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; |
aoqi@0 | 721 | } |
aoqi@0 | 722 | |
aoqi@0 | 723 | |
aoqi@0 | 724 | void initialize_hashtable(NameSigHash** table) { |
aoqi@0 | 725 | memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); |
aoqi@0 | 726 | } |
aoqi@0 | 727 | |
aoqi@0 | 728 | // Return false if the name/sig combination is found in table. |
aoqi@0 | 729 | // Return true if no duplicate is found. And name/sig is added as a new entry in table. |
aoqi@0 | 730 | // The old format checker uses heap sort to find duplicates. |
aoqi@0 | 731 | // NOTE: caller should guarantee that GC doesn't happen during the life cycle |
aoqi@0 | 732 | // of table since we don't expect Symbol*'s to move. |
aoqi@0 | 733 | bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
aoqi@0 | 734 | assert(name != NULL, "name in constant pool is NULL"); |
aoqi@0 | 735 | |
aoqi@0 | 736 | // First lookup for duplicates |
aoqi@0 | 737 | int index = hash(name, sig); |
aoqi@0 | 738 | NameSigHash* entry = table[index]; |
aoqi@0 | 739 | while (entry != NULL) { |
aoqi@0 | 740 | if (entry->_name == name && entry->_sig == sig) { |
aoqi@0 | 741 | return false; |
aoqi@0 | 742 | } |
aoqi@0 | 743 | entry = entry->_next; |
aoqi@0 | 744 | } |
aoqi@0 | 745 | |
aoqi@0 | 746 | // No duplicate is found, allocate a new entry and fill it. |
aoqi@0 | 747 | entry = new NameSigHash(); |
aoqi@0 | 748 | entry->_name = name; |
aoqi@0 | 749 | entry->_sig = sig; |
aoqi@0 | 750 | |
aoqi@0 | 751 | // Insert into hash table |
aoqi@0 | 752 | entry->_next = table[index]; |
aoqi@0 | 753 | table[index] = entry; |
aoqi@0 | 754 | |
aoqi@0 | 755 | return true; |
aoqi@0 | 756 | } |
aoqi@0 | 757 | |
aoqi@0 | 758 | |
aoqi@0 | 759 | Array<Klass*>* ClassFileParser::parse_interfaces(int length, |
aoqi@0 | 760 | Handle protection_domain, |
aoqi@0 | 761 | Symbol* class_name, |
aoqi@0 | 762 | bool* has_default_methods, |
aoqi@0 | 763 | TRAPS) { |
aoqi@0 | 764 | if (length == 0) { |
aoqi@0 | 765 | _local_interfaces = Universe::the_empty_klass_array(); |
aoqi@0 | 766 | } else { |
aoqi@0 | 767 | ClassFileStream* cfs = stream(); |
aoqi@0 | 768 | assert(length > 0, "only called for length>0"); |
aoqi@0 | 769 | _local_interfaces = MetadataFactory::new_array<Klass*>(_loader_data, length, NULL, CHECK_NULL); |
aoqi@0 | 770 | |
aoqi@0 | 771 | int index; |
aoqi@0 | 772 | for (index = 0; index < length; index++) { |
aoqi@0 | 773 | u2 interface_index = cfs->get_u2(CHECK_NULL); |
aoqi@0 | 774 | KlassHandle interf; |
aoqi@0 | 775 | check_property( |
aoqi@0 | 776 | valid_klass_reference_at(interface_index), |
aoqi@0 | 777 | "Interface name has bad constant pool index %u in class file %s", |
aoqi@0 | 778 | interface_index, CHECK_NULL); |
aoqi@0 | 779 | if (_cp->tag_at(interface_index).is_klass()) { |
aoqi@0 | 780 | interf = KlassHandle(THREAD, _cp->resolved_klass_at(interface_index)); |
aoqi@0 | 781 | } else { |
aoqi@0 | 782 | Symbol* unresolved_klass = _cp->klass_name_at(interface_index); |
aoqi@0 | 783 | |
aoqi@0 | 784 | // Don't need to check legal name because it's checked when parsing constant pool. |
aoqi@0 | 785 | // But need to make sure it's not an array type. |
aoqi@0 | 786 | guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
aoqi@0 | 787 | "Bad interface name in class file %s", CHECK_NULL); |
aoqi@0 | 788 | Handle class_loader(THREAD, _loader_data->class_loader()); |
aoqi@0 | 789 | |
aoqi@0 | 790 | // Call resolve_super so classcircularity is checked |
aoqi@0 | 791 | Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
aoqi@0 | 792 | unresolved_klass, class_loader, protection_domain, |
aoqi@0 | 793 | false, CHECK_NULL); |
aoqi@0 | 794 | interf = KlassHandle(THREAD, k); |
aoqi@0 | 795 | } |
aoqi@0 | 796 | |
aoqi@0 | 797 | if (!interf()->is_interface()) { |
aoqi@0 | 798 | THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
aoqi@0 | 799 | } |
aoqi@0 | 800 | if (InstanceKlass::cast(interf())->has_default_methods()) { |
aoqi@0 | 801 | *has_default_methods = true; |
aoqi@0 | 802 | } |
aoqi@0 | 803 | _local_interfaces->at_put(index, interf()); |
aoqi@0 | 804 | } |
aoqi@0 | 805 | |
aoqi@0 | 806 | if (!_need_verify || length <= 1) { |
aoqi@0 | 807 | return _local_interfaces; |
aoqi@0 | 808 | } |
aoqi@0 | 809 | |
aoqi@0 | 810 | // Check if there's any duplicates in interfaces |
aoqi@0 | 811 | ResourceMark rm(THREAD); |
aoqi@0 | 812 | NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 813 | THREAD, NameSigHash*, HASH_ROW_SIZE); |
aoqi@0 | 814 | initialize_hashtable(interface_names); |
aoqi@0 | 815 | bool dup = false; |
aoqi@0 | 816 | { |
aoqi@0 | 817 | debug_only(No_Safepoint_Verifier nsv;) |
aoqi@0 | 818 | for (index = 0; index < length; index++) { |
aoqi@0 | 819 | Klass* k = _local_interfaces->at(index); |
aoqi@0 | 820 | Symbol* name = InstanceKlass::cast(k)->name(); |
aoqi@0 | 821 | // If no duplicates, add (name, NULL) in hashtable interface_names. |
aoqi@0 | 822 | if (!put_after_lookup(name, NULL, interface_names)) { |
aoqi@0 | 823 | dup = true; |
aoqi@0 | 824 | break; |
aoqi@0 | 825 | } |
aoqi@0 | 826 | } |
aoqi@0 | 827 | } |
aoqi@0 | 828 | if (dup) { |
aoqi@0 | 829 | classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
aoqi@0 | 830 | } |
aoqi@0 | 831 | } |
aoqi@0 | 832 | return _local_interfaces; |
aoqi@0 | 833 | } |
aoqi@0 | 834 | |
aoqi@0 | 835 | |
aoqi@0 | 836 | void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, TRAPS) { |
aoqi@0 | 837 | // Make sure the constant pool entry is of a type appropriate to this field |
aoqi@0 | 838 | guarantee_property( |
aoqi@0 | 839 | (constantvalue_index > 0 && |
aoqi@0 | 840 | constantvalue_index < _cp->length()), |
aoqi@0 | 841 | "Bad initial value index %u in ConstantValue attribute in class file %s", |
aoqi@0 | 842 | constantvalue_index, CHECK); |
aoqi@0 | 843 | constantTag value_type = _cp->tag_at(constantvalue_index); |
aoqi@0 | 844 | switch ( _cp->basic_type_for_signature_at(signature_index) ) { |
aoqi@0 | 845 | case T_LONG: |
aoqi@0 | 846 | guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); |
aoqi@0 | 847 | break; |
aoqi@0 | 848 | case T_FLOAT: |
aoqi@0 | 849 | guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); |
aoqi@0 | 850 | break; |
aoqi@0 | 851 | case T_DOUBLE: |
aoqi@0 | 852 | guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); |
aoqi@0 | 853 | break; |
aoqi@0 | 854 | case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: |
aoqi@0 | 855 | guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); |
aoqi@0 | 856 | break; |
aoqi@0 | 857 | case T_OBJECT: |
aoqi@0 | 858 | guarantee_property((_cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
aoqi@0 | 859 | && value_type.is_string()), |
aoqi@0 | 860 | "Bad string initial value in class file %s", CHECK); |
aoqi@0 | 861 | break; |
aoqi@0 | 862 | default: |
aoqi@0 | 863 | classfile_parse_error( |
aoqi@0 | 864 | "Unable to set initial value %u in class file %s", |
aoqi@0 | 865 | constantvalue_index, CHECK); |
aoqi@0 | 866 | } |
aoqi@0 | 867 | } |
aoqi@0 | 868 | |
aoqi@0 | 869 | |
aoqi@0 | 870 | // Parse attributes for a field. |
aoqi@0 | 871 | void ClassFileParser::parse_field_attributes(u2 attributes_count, |
aoqi@0 | 872 | bool is_static, u2 signature_index, |
aoqi@0 | 873 | u2* constantvalue_index_addr, |
aoqi@0 | 874 | bool* is_synthetic_addr, |
aoqi@0 | 875 | u2* generic_signature_index_addr, |
aoqi@0 | 876 | ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
aoqi@0 | 877 | TRAPS) { |
aoqi@0 | 878 | ClassFileStream* cfs = stream(); |
aoqi@0 | 879 | assert(attributes_count > 0, "length should be greater than 0"); |
aoqi@0 | 880 | u2 constantvalue_index = 0; |
aoqi@0 | 881 | u2 generic_signature_index = 0; |
aoqi@0 | 882 | bool is_synthetic = false; |
aoqi@0 | 883 | u1* runtime_visible_annotations = NULL; |
aoqi@0 | 884 | int runtime_visible_annotations_length = 0; |
aoqi@0 | 885 | u1* runtime_invisible_annotations = NULL; |
aoqi@0 | 886 | int runtime_invisible_annotations_length = 0; |
aoqi@0 | 887 | u1* runtime_visible_type_annotations = NULL; |
aoqi@0 | 888 | int runtime_visible_type_annotations_length = 0; |
aoqi@0 | 889 | u1* runtime_invisible_type_annotations = NULL; |
aoqi@0 | 890 | int runtime_invisible_type_annotations_length = 0; |
aoqi@0 | 891 | bool runtime_invisible_type_annotations_exists = false; |
aoqi@0 | 892 | while (attributes_count--) { |
aoqi@0 | 893 | cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length |
aoqi@0 | 894 | u2 attribute_name_index = cfs->get_u2_fast(); |
aoqi@0 | 895 | u4 attribute_length = cfs->get_u4_fast(); |
aoqi@0 | 896 | check_property(valid_symbol_at(attribute_name_index), |
aoqi@0 | 897 | "Invalid field attribute index %u in class file %s", |
aoqi@0 | 898 | attribute_name_index, |
aoqi@0 | 899 | CHECK); |
aoqi@0 | 900 | Symbol* attribute_name = _cp->symbol_at(attribute_name_index); |
aoqi@0 | 901 | if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
aoqi@0 | 902 | // ignore if non-static |
aoqi@0 | 903 | if (constantvalue_index != 0) { |
aoqi@0 | 904 | classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); |
aoqi@0 | 905 | } |
aoqi@0 | 906 | check_property( |
aoqi@0 | 907 | attribute_length == 2, |
aoqi@0 | 908 | "Invalid ConstantValue field attribute length %u in class file %s", |
aoqi@0 | 909 | attribute_length, CHECK); |
aoqi@0 | 910 | constantvalue_index = cfs->get_u2(CHECK); |
aoqi@0 | 911 | if (_need_verify) { |
aoqi@0 | 912 | verify_constantvalue(constantvalue_index, signature_index, CHECK); |
aoqi@0 | 913 | } |
aoqi@0 | 914 | } else if (attribute_name == vmSymbols::tag_synthetic()) { |
aoqi@0 | 915 | if (attribute_length != 0) { |
aoqi@0 | 916 | classfile_parse_error( |
aoqi@0 | 917 | "Invalid Synthetic field attribute length %u in class file %s", |
aoqi@0 | 918 | attribute_length, CHECK); |
aoqi@0 | 919 | } |
aoqi@0 | 920 | is_synthetic = true; |
aoqi@0 | 921 | } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 |
aoqi@0 | 922 | if (attribute_length != 0) { |
aoqi@0 | 923 | classfile_parse_error( |
aoqi@0 | 924 | "Invalid Deprecated field attribute length %u in class file %s", |
aoqi@0 | 925 | attribute_length, CHECK); |
aoqi@0 | 926 | } |
aoqi@0 | 927 | } else if (_major_version >= JAVA_1_5_VERSION) { |
aoqi@0 | 928 | if (attribute_name == vmSymbols::tag_signature()) { |
aoqi@0 | 929 | if (attribute_length != 2) { |
aoqi@0 | 930 | classfile_parse_error( |
aoqi@0 | 931 | "Wrong size %u for field's Signature attribute in class file %s", |
aoqi@0 | 932 | attribute_length, CHECK); |
aoqi@0 | 933 | } |
aoqi@0 | 934 | generic_signature_index = parse_generic_signature_attribute(CHECK); |
aoqi@0 | 935 | } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { |
aoqi@0 | 936 | runtime_visible_annotations_length = attribute_length; |
aoqi@0 | 937 | runtime_visible_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 938 | assert(runtime_visible_annotations != NULL, "null visible annotations"); |
aoqi@0 | 939 | parse_annotations(runtime_visible_annotations, |
aoqi@0 | 940 | runtime_visible_annotations_length, |
aoqi@0 | 941 | parsed_annotations, |
aoqi@0 | 942 | CHECK); |
aoqi@0 | 943 | cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
aoqi@0 | 944 | } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { |
aoqi@0 | 945 | runtime_invisible_annotations_length = attribute_length; |
aoqi@0 | 946 | runtime_invisible_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 947 | assert(runtime_invisible_annotations != NULL, "null invisible annotations"); |
aoqi@0 | 948 | cfs->skip_u1(runtime_invisible_annotations_length, CHECK); |
aoqi@0 | 949 | } else if (attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
aoqi@0 | 950 | if (runtime_visible_type_annotations != NULL) { |
aoqi@0 | 951 | classfile_parse_error( |
aoqi@0 | 952 | "Multiple RuntimeVisibleTypeAnnotations attributes for field in class file %s", CHECK); |
aoqi@0 | 953 | } |
aoqi@0 | 954 | runtime_visible_type_annotations_length = attribute_length; |
aoqi@0 | 955 | runtime_visible_type_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 956 | assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
aoqi@0 | 957 | cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
aoqi@0 | 958 | } else if (attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
aoqi@0 | 959 | if (runtime_invisible_type_annotations_exists) { |
aoqi@0 | 960 | classfile_parse_error( |
aoqi@0 | 961 | "Multiple RuntimeInvisibleTypeAnnotations attributes for field in class file %s", CHECK); |
aoqi@0 | 962 | } else { |
aoqi@0 | 963 | runtime_invisible_type_annotations_exists = true; |
aoqi@0 | 964 | } |
aoqi@0 | 965 | if (PreserveAllAnnotations) { |
aoqi@0 | 966 | runtime_invisible_type_annotations_length = attribute_length; |
aoqi@0 | 967 | runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 968 | assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
aoqi@0 | 969 | } |
aoqi@0 | 970 | cfs->skip_u1(attribute_length, CHECK); |
aoqi@0 | 971 | } else { |
aoqi@0 | 972 | cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes |
aoqi@0 | 973 | } |
aoqi@0 | 974 | } else { |
aoqi@0 | 975 | cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes |
aoqi@0 | 976 | } |
aoqi@0 | 977 | } |
aoqi@0 | 978 | |
aoqi@0 | 979 | *constantvalue_index_addr = constantvalue_index; |
aoqi@0 | 980 | *is_synthetic_addr = is_synthetic; |
aoqi@0 | 981 | *generic_signature_index_addr = generic_signature_index; |
aoqi@0 | 982 | AnnotationArray* a = assemble_annotations(runtime_visible_annotations, |
aoqi@0 | 983 | runtime_visible_annotations_length, |
aoqi@0 | 984 | runtime_invisible_annotations, |
aoqi@0 | 985 | runtime_invisible_annotations_length, |
aoqi@0 | 986 | CHECK); |
aoqi@0 | 987 | parsed_annotations->set_field_annotations(a); |
aoqi@0 | 988 | a = assemble_annotations(runtime_visible_type_annotations, |
aoqi@0 | 989 | runtime_visible_type_annotations_length, |
aoqi@0 | 990 | runtime_invisible_type_annotations, |
aoqi@0 | 991 | runtime_invisible_type_annotations_length, |
aoqi@0 | 992 | CHECK); |
aoqi@0 | 993 | parsed_annotations->set_field_type_annotations(a); |
aoqi@0 | 994 | return; |
aoqi@0 | 995 | } |
aoqi@0 | 996 | |
aoqi@0 | 997 | |
aoqi@0 | 998 | // Field allocation types. Used for computing field offsets. |
aoqi@0 | 999 | |
aoqi@0 | 1000 | enum FieldAllocationType { |
aoqi@0 | 1001 | STATIC_OOP, // Oops |
aoqi@0 | 1002 | STATIC_BYTE, // Boolean, Byte, char |
aoqi@0 | 1003 | STATIC_SHORT, // shorts |
aoqi@0 | 1004 | STATIC_WORD, // ints |
aoqi@0 | 1005 | STATIC_DOUBLE, // aligned long or double |
aoqi@0 | 1006 | NONSTATIC_OOP, |
aoqi@0 | 1007 | NONSTATIC_BYTE, |
aoqi@0 | 1008 | NONSTATIC_SHORT, |
aoqi@0 | 1009 | NONSTATIC_WORD, |
aoqi@0 | 1010 | NONSTATIC_DOUBLE, |
aoqi@0 | 1011 | MAX_FIELD_ALLOCATION_TYPE, |
aoqi@0 | 1012 | BAD_ALLOCATION_TYPE = -1 |
aoqi@0 | 1013 | }; |
aoqi@0 | 1014 | |
aoqi@0 | 1015 | static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
aoqi@0 | 1016 | BAD_ALLOCATION_TYPE, // 0 |
aoqi@0 | 1017 | BAD_ALLOCATION_TYPE, // 1 |
aoqi@0 | 1018 | BAD_ALLOCATION_TYPE, // 2 |
aoqi@0 | 1019 | BAD_ALLOCATION_TYPE, // 3 |
aoqi@0 | 1020 | NONSTATIC_BYTE , // T_BOOLEAN = 4, |
aoqi@0 | 1021 | NONSTATIC_SHORT, // T_CHAR = 5, |
aoqi@0 | 1022 | NONSTATIC_WORD, // T_FLOAT = 6, |
aoqi@0 | 1023 | NONSTATIC_DOUBLE, // T_DOUBLE = 7, |
aoqi@0 | 1024 | NONSTATIC_BYTE, // T_BYTE = 8, |
aoqi@0 | 1025 | NONSTATIC_SHORT, // T_SHORT = 9, |
aoqi@0 | 1026 | NONSTATIC_WORD, // T_INT = 10, |
aoqi@0 | 1027 | NONSTATIC_DOUBLE, // T_LONG = 11, |
aoqi@0 | 1028 | NONSTATIC_OOP, // T_OBJECT = 12, |
aoqi@0 | 1029 | NONSTATIC_OOP, // T_ARRAY = 13, |
aoqi@0 | 1030 | BAD_ALLOCATION_TYPE, // T_VOID = 14, |
aoqi@0 | 1031 | BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
aoqi@0 | 1032 | BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
aoqi@0 | 1033 | BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
aoqi@0 | 1034 | BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
aoqi@0 | 1035 | BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
aoqi@0 | 1036 | BAD_ALLOCATION_TYPE, // 0 |
aoqi@0 | 1037 | BAD_ALLOCATION_TYPE, // 1 |
aoqi@0 | 1038 | BAD_ALLOCATION_TYPE, // 2 |
aoqi@0 | 1039 | BAD_ALLOCATION_TYPE, // 3 |
aoqi@0 | 1040 | STATIC_BYTE , // T_BOOLEAN = 4, |
aoqi@0 | 1041 | STATIC_SHORT, // T_CHAR = 5, |
aoqi@0 | 1042 | STATIC_WORD, // T_FLOAT = 6, |
aoqi@0 | 1043 | STATIC_DOUBLE, // T_DOUBLE = 7, |
aoqi@0 | 1044 | STATIC_BYTE, // T_BYTE = 8, |
aoqi@0 | 1045 | STATIC_SHORT, // T_SHORT = 9, |
aoqi@0 | 1046 | STATIC_WORD, // T_INT = 10, |
aoqi@0 | 1047 | STATIC_DOUBLE, // T_LONG = 11, |
aoqi@0 | 1048 | STATIC_OOP, // T_OBJECT = 12, |
aoqi@0 | 1049 | STATIC_OOP, // T_ARRAY = 13, |
aoqi@0 | 1050 | BAD_ALLOCATION_TYPE, // T_VOID = 14, |
aoqi@0 | 1051 | BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
aoqi@0 | 1052 | BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
aoqi@0 | 1053 | BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
aoqi@0 | 1054 | BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
aoqi@0 | 1055 | BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
aoqi@0 | 1056 | }; |
aoqi@0 | 1057 | |
aoqi@0 | 1058 | static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
aoqi@0 | 1059 | assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); |
aoqi@0 | 1060 | FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; |
aoqi@0 | 1061 | assert(result != BAD_ALLOCATION_TYPE, "bad type"); |
aoqi@0 | 1062 | return result; |
aoqi@0 | 1063 | } |
aoqi@0 | 1064 | |
aoqi@0 | 1065 | class FieldAllocationCount: public ResourceObj { |
aoqi@0 | 1066 | public: |
aoqi@0 | 1067 | u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
aoqi@0 | 1068 | |
aoqi@0 | 1069 | FieldAllocationCount() { |
aoqi@0 | 1070 | for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { |
aoqi@0 | 1071 | count[i] = 0; |
aoqi@0 | 1072 | } |
aoqi@0 | 1073 | } |
aoqi@0 | 1074 | |
aoqi@0 | 1075 | FieldAllocationType update(bool is_static, BasicType type) { |
aoqi@0 | 1076 | FieldAllocationType atype = basic_type_to_atype(is_static, type); |
aoqi@0 | 1077 | // Make sure there is no overflow with injected fields. |
aoqi@0 | 1078 | assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
aoqi@0 | 1079 | count[atype]++; |
aoqi@0 | 1080 | return atype; |
aoqi@0 | 1081 | } |
aoqi@0 | 1082 | }; |
aoqi@0 | 1083 | |
aoqi@0 | 1084 | Array<u2>* ClassFileParser::parse_fields(Symbol* class_name, |
aoqi@0 | 1085 | bool is_interface, |
aoqi@0 | 1086 | FieldAllocationCount *fac, |
aoqi@0 | 1087 | u2* java_fields_count_ptr, TRAPS) { |
aoqi@0 | 1088 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1089 | cfs->guarantee_more(2, CHECK_NULL); // length |
aoqi@0 | 1090 | u2 length = cfs->get_u2_fast(); |
aoqi@0 | 1091 | *java_fields_count_ptr = length; |
aoqi@0 | 1092 | |
aoqi@0 | 1093 | int num_injected = 0; |
aoqi@0 | 1094 | InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); |
aoqi@0 | 1095 | int total_fields = length + num_injected; |
aoqi@0 | 1096 | |
aoqi@0 | 1097 | // The field array starts with tuples of shorts |
aoqi@0 | 1098 | // [access, name index, sig index, initial value index, byte offset]. |
aoqi@0 | 1099 | // A generic signature slot only exists for field with generic |
aoqi@0 | 1100 | // signature attribute. And the access flag is set with |
aoqi@0 | 1101 | // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
aoqi@0 | 1102 | // signature slots are at the end of the field array and after all |
aoqi@0 | 1103 | // other fields data. |
aoqi@0 | 1104 | // |
aoqi@0 | 1105 | // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
aoqi@0 | 1106 | // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
aoqi@0 | 1107 | // ... |
aoqi@0 | 1108 | // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
aoqi@0 | 1109 | // [generic signature index] |
aoqi@0 | 1110 | // [generic signature index] |
aoqi@0 | 1111 | // ... |
aoqi@0 | 1112 | // |
aoqi@0 | 1113 | // Allocate a temporary resource array for field data. For each field, |
aoqi@0 | 1114 | // a slot is reserved in the temporary array for the generic signature |
aoqi@0 | 1115 | // index. After parsing all fields, the data are copied to a permanent |
aoqi@0 | 1116 | // array and any unused slots will be discarded. |
aoqi@0 | 1117 | ResourceMark rm(THREAD); |
aoqi@0 | 1118 | u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 1119 | THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
aoqi@0 | 1120 | |
aoqi@0 | 1121 | // The generic signature slots start after all other fields' data. |
aoqi@0 | 1122 | int generic_signature_slot = total_fields * FieldInfo::field_slots; |
aoqi@0 | 1123 | int num_generic_signature = 0; |
aoqi@0 | 1124 | for (int n = 0; n < length; n++) { |
aoqi@0 | 1125 | cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
aoqi@0 | 1126 | |
aoqi@0 | 1127 | AccessFlags access_flags; |
aoqi@0 | 1128 | jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; |
aoqi@0 | 1129 | verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
aoqi@0 | 1130 | access_flags.set_flags(flags); |
aoqi@0 | 1131 | |
aoqi@0 | 1132 | u2 name_index = cfs->get_u2_fast(); |
aoqi@0 | 1133 | int cp_size = _cp->length(); |
aoqi@0 | 1134 | check_property(valid_symbol_at(name_index), |
aoqi@0 | 1135 | "Invalid constant pool index %u for field name in class file %s", |
aoqi@0 | 1136 | name_index, |
aoqi@0 | 1137 | CHECK_NULL); |
aoqi@0 | 1138 | Symbol* name = _cp->symbol_at(name_index); |
aoqi@0 | 1139 | verify_legal_field_name(name, CHECK_NULL); |
aoqi@0 | 1140 | |
aoqi@0 | 1141 | u2 signature_index = cfs->get_u2_fast(); |
aoqi@0 | 1142 | check_property(valid_symbol_at(signature_index), |
aoqi@0 | 1143 | "Invalid constant pool index %u for field signature in class file %s", |
aoqi@0 | 1144 | signature_index, CHECK_NULL); |
aoqi@0 | 1145 | Symbol* sig = _cp->symbol_at(signature_index); |
aoqi@0 | 1146 | verify_legal_field_signature(name, sig, CHECK_NULL); |
aoqi@0 | 1147 | |
aoqi@0 | 1148 | u2 constantvalue_index = 0; |
aoqi@0 | 1149 | bool is_synthetic = false; |
aoqi@0 | 1150 | u2 generic_signature_index = 0; |
aoqi@0 | 1151 | bool is_static = access_flags.is_static(); |
aoqi@0 | 1152 | FieldAnnotationCollector parsed_annotations(_loader_data); |
aoqi@0 | 1153 | |
aoqi@0 | 1154 | u2 attributes_count = cfs->get_u2_fast(); |
aoqi@0 | 1155 | if (attributes_count > 0) { |
aoqi@0 | 1156 | parse_field_attributes(attributes_count, is_static, signature_index, |
aoqi@0 | 1157 | &constantvalue_index, &is_synthetic, |
aoqi@0 | 1158 | &generic_signature_index, &parsed_annotations, |
aoqi@0 | 1159 | CHECK_NULL); |
aoqi@0 | 1160 | if (parsed_annotations.field_annotations() != NULL) { |
aoqi@0 | 1161 | if (_fields_annotations == NULL) { |
aoqi@0 | 1162 | _fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
aoqi@0 | 1163 | _loader_data, length, NULL, |
aoqi@0 | 1164 | CHECK_NULL); |
aoqi@0 | 1165 | } |
aoqi@0 | 1166 | _fields_annotations->at_put(n, parsed_annotations.field_annotations()); |
aoqi@0 | 1167 | parsed_annotations.set_field_annotations(NULL); |
aoqi@0 | 1168 | } |
aoqi@0 | 1169 | if (parsed_annotations.field_type_annotations() != NULL) { |
aoqi@0 | 1170 | if (_fields_type_annotations == NULL) { |
aoqi@0 | 1171 | _fields_type_annotations = MetadataFactory::new_array<AnnotationArray*>( |
aoqi@0 | 1172 | _loader_data, length, NULL, |
aoqi@0 | 1173 | CHECK_NULL); |
aoqi@0 | 1174 | } |
aoqi@0 | 1175 | _fields_type_annotations->at_put(n, parsed_annotations.field_type_annotations()); |
aoqi@0 | 1176 | parsed_annotations.set_field_type_annotations(NULL); |
aoqi@0 | 1177 | } |
aoqi@0 | 1178 | |
aoqi@0 | 1179 | if (is_synthetic) { |
aoqi@0 | 1180 | access_flags.set_is_synthetic(); |
aoqi@0 | 1181 | } |
aoqi@0 | 1182 | if (generic_signature_index != 0) { |
aoqi@0 | 1183 | access_flags.set_field_has_generic_signature(); |
aoqi@0 | 1184 | fa[generic_signature_slot] = generic_signature_index; |
aoqi@0 | 1185 | generic_signature_slot ++; |
aoqi@0 | 1186 | num_generic_signature ++; |
aoqi@0 | 1187 | } |
aoqi@0 | 1188 | } |
aoqi@0 | 1189 | |
aoqi@0 | 1190 | FieldInfo* field = FieldInfo::from_field_array(fa, n); |
aoqi@0 | 1191 | field->initialize(access_flags.as_short(), |
aoqi@0 | 1192 | name_index, |
aoqi@0 | 1193 | signature_index, |
aoqi@0 | 1194 | constantvalue_index); |
aoqi@0 | 1195 | BasicType type = _cp->basic_type_for_signature_at(signature_index); |
aoqi@0 | 1196 | |
aoqi@0 | 1197 | // Remember how many oops we encountered and compute allocation type |
aoqi@0 | 1198 | FieldAllocationType atype = fac->update(is_static, type); |
aoqi@0 | 1199 | field->set_allocation_type(atype); |
aoqi@0 | 1200 | |
aoqi@0 | 1201 | // After field is initialized with type, we can augment it with aux info |
aoqi@0 | 1202 | if (parsed_annotations.has_any_annotations()) |
aoqi@0 | 1203 | parsed_annotations.apply_to(field); |
aoqi@0 | 1204 | } |
aoqi@0 | 1205 | |
aoqi@0 | 1206 | int index = length; |
aoqi@0 | 1207 | if (num_injected != 0) { |
aoqi@0 | 1208 | for (int n = 0; n < num_injected; n++) { |
aoqi@0 | 1209 | // Check for duplicates |
aoqi@0 | 1210 | if (injected[n].may_be_java) { |
aoqi@0 | 1211 | Symbol* name = injected[n].name(); |
aoqi@0 | 1212 | Symbol* signature = injected[n].signature(); |
aoqi@0 | 1213 | bool duplicate = false; |
aoqi@0 | 1214 | for (int i = 0; i < length; i++) { |
aoqi@0 | 1215 | FieldInfo* f = FieldInfo::from_field_array(fa, i); |
aoqi@0 | 1216 | if (name == _cp->symbol_at(f->name_index()) && |
aoqi@0 | 1217 | signature == _cp->symbol_at(f->signature_index())) { |
aoqi@0 | 1218 | // Symbol is desclared in Java so skip this one |
aoqi@0 | 1219 | duplicate = true; |
aoqi@0 | 1220 | break; |
aoqi@0 | 1221 | } |
aoqi@0 | 1222 | } |
aoqi@0 | 1223 | if (duplicate) { |
aoqi@0 | 1224 | // These will be removed from the field array at the end |
aoqi@0 | 1225 | continue; |
aoqi@0 | 1226 | } |
aoqi@0 | 1227 | } |
aoqi@0 | 1228 | |
aoqi@0 | 1229 | // Injected field |
aoqi@0 | 1230 | FieldInfo* field = FieldInfo::from_field_array(fa, index); |
aoqi@0 | 1231 | field->initialize(JVM_ACC_FIELD_INTERNAL, |
aoqi@0 | 1232 | injected[n].name_index, |
aoqi@0 | 1233 | injected[n].signature_index, |
aoqi@0 | 1234 | 0); |
aoqi@0 | 1235 | |
aoqi@0 | 1236 | BasicType type = FieldType::basic_type(injected[n].signature()); |
aoqi@0 | 1237 | |
aoqi@0 | 1238 | // Remember how many oops we encountered and compute allocation type |
aoqi@0 | 1239 | FieldAllocationType atype = fac->update(false, type); |
aoqi@0 | 1240 | field->set_allocation_type(atype); |
aoqi@0 | 1241 | index++; |
aoqi@0 | 1242 | } |
aoqi@0 | 1243 | } |
aoqi@0 | 1244 | |
aoqi@0 | 1245 | // Now copy the fields' data from the temporary resource array. |
aoqi@0 | 1246 | // Sometimes injected fields already exist in the Java source so |
aoqi@0 | 1247 | // the fields array could be too long. In that case the |
aoqi@0 | 1248 | // fields array is trimed. Also unused slots that were reserved |
aoqi@0 | 1249 | // for generic signature indexes are discarded. |
aoqi@0 | 1250 | Array<u2>* fields = MetadataFactory::new_array<u2>( |
aoqi@0 | 1251 | _loader_data, index * FieldInfo::field_slots + num_generic_signature, |
aoqi@0 | 1252 | CHECK_NULL); |
aoqi@0 | 1253 | _fields = fields; // save in case of error |
aoqi@0 | 1254 | { |
aoqi@0 | 1255 | int i = 0; |
aoqi@0 | 1256 | for (; i < index * FieldInfo::field_slots; i++) { |
aoqi@0 | 1257 | fields->at_put(i, fa[i]); |
aoqi@0 | 1258 | } |
aoqi@0 | 1259 | for (int j = total_fields * FieldInfo::field_slots; |
aoqi@0 | 1260 | j < generic_signature_slot; j++) { |
aoqi@0 | 1261 | fields->at_put(i++, fa[j]); |
aoqi@0 | 1262 | } |
aoqi@0 | 1263 | assert(i == fields->length(), ""); |
aoqi@0 | 1264 | } |
aoqi@0 | 1265 | |
aoqi@0 | 1266 | if (_need_verify && length > 1) { |
aoqi@0 | 1267 | // Check duplicated fields |
aoqi@0 | 1268 | ResourceMark rm(THREAD); |
aoqi@0 | 1269 | NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 1270 | THREAD, NameSigHash*, HASH_ROW_SIZE); |
aoqi@0 | 1271 | initialize_hashtable(names_and_sigs); |
aoqi@0 | 1272 | bool dup = false; |
aoqi@0 | 1273 | { |
aoqi@0 | 1274 | debug_only(No_Safepoint_Verifier nsv;) |
aoqi@0 | 1275 | for (AllFieldStream fs(fields, _cp); !fs.done(); fs.next()) { |
aoqi@0 | 1276 | Symbol* name = fs.name(); |
aoqi@0 | 1277 | Symbol* sig = fs.signature(); |
aoqi@0 | 1278 | // If no duplicates, add name/signature in hashtable names_and_sigs. |
aoqi@0 | 1279 | if (!put_after_lookup(name, sig, names_and_sigs)) { |
aoqi@0 | 1280 | dup = true; |
aoqi@0 | 1281 | break; |
aoqi@0 | 1282 | } |
aoqi@0 | 1283 | } |
aoqi@0 | 1284 | } |
aoqi@0 | 1285 | if (dup) { |
aoqi@0 | 1286 | classfile_parse_error("Duplicate field name&signature in class file %s", |
aoqi@0 | 1287 | CHECK_NULL); |
aoqi@0 | 1288 | } |
aoqi@0 | 1289 | } |
aoqi@0 | 1290 | |
aoqi@0 | 1291 | return fields; |
aoqi@0 | 1292 | } |
aoqi@0 | 1293 | |
aoqi@0 | 1294 | |
aoqi@0 | 1295 | static void copy_u2_with_conversion(u2* dest, u2* src, int length) { |
aoqi@0 | 1296 | while (length-- > 0) { |
aoqi@0 | 1297 | *dest++ = Bytes::get_Java_u2((u1*) (src++)); |
aoqi@0 | 1298 | } |
aoqi@0 | 1299 | } |
aoqi@0 | 1300 | |
aoqi@0 | 1301 | |
aoqi@0 | 1302 | u2* ClassFileParser::parse_exception_table(u4 code_length, |
aoqi@0 | 1303 | u4 exception_table_length, |
aoqi@0 | 1304 | TRAPS) { |
aoqi@0 | 1305 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1306 | |
aoqi@0 | 1307 | u2* exception_table_start = cfs->get_u2_buffer(); |
aoqi@0 | 1308 | assert(exception_table_start != NULL, "null exception table"); |
aoqi@0 | 1309 | cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
aoqi@0 | 1310 | // Will check legal target after parsing code array in verifier. |
aoqi@0 | 1311 | if (_need_verify) { |
aoqi@0 | 1312 | for (unsigned int i = 0; i < exception_table_length; i++) { |
aoqi@0 | 1313 | u2 start_pc = cfs->get_u2_fast(); |
aoqi@0 | 1314 | u2 end_pc = cfs->get_u2_fast(); |
aoqi@0 | 1315 | u2 handler_pc = cfs->get_u2_fast(); |
aoqi@0 | 1316 | u2 catch_type_index = cfs->get_u2_fast(); |
aoqi@0 | 1317 | guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
aoqi@0 | 1318 | "Illegal exception table range in class file %s", |
aoqi@0 | 1319 | CHECK_NULL); |
aoqi@0 | 1320 | guarantee_property(handler_pc < code_length, |
aoqi@0 | 1321 | "Illegal exception table handler in class file %s", |
aoqi@0 | 1322 | CHECK_NULL); |
aoqi@0 | 1323 | if (catch_type_index != 0) { |
aoqi@0 | 1324 | guarantee_property(valid_klass_reference_at(catch_type_index), |
aoqi@0 | 1325 | "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
aoqi@0 | 1326 | } |
aoqi@0 | 1327 | } |
aoqi@0 | 1328 | } else { |
aoqi@0 | 1329 | cfs->skip_u2_fast(exception_table_length * 4); |
aoqi@0 | 1330 | } |
aoqi@0 | 1331 | return exception_table_start; |
aoqi@0 | 1332 | } |
aoqi@0 | 1333 | |
aoqi@0 | 1334 | void ClassFileParser::parse_linenumber_table( |
aoqi@0 | 1335 | u4 code_attribute_length, u4 code_length, |
aoqi@0 | 1336 | CompressedLineNumberWriteStream** write_stream, TRAPS) { |
aoqi@0 | 1337 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1338 | unsigned int num_entries = cfs->get_u2(CHECK); |
aoqi@0 | 1339 | |
aoqi@0 | 1340 | // Each entry is a u2 start_pc, and a u2 line_number |
aoqi@0 | 1341 | unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); |
aoqi@0 | 1342 | |
aoqi@0 | 1343 | // Verify line number attribute and table length |
aoqi@0 | 1344 | check_property( |
aoqi@0 | 1345 | code_attribute_length == sizeof(u2) + length_in_bytes, |
aoqi@0 | 1346 | "LineNumberTable attribute has wrong length in class file %s", CHECK); |
aoqi@0 | 1347 | |
aoqi@0 | 1348 | cfs->guarantee_more(length_in_bytes, CHECK); |
aoqi@0 | 1349 | |
aoqi@0 | 1350 | if ((*write_stream) == NULL) { |
aoqi@0 | 1351 | if (length_in_bytes > fixed_buffer_size) { |
aoqi@0 | 1352 | (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); |
aoqi@0 | 1353 | } else { |
aoqi@0 | 1354 | (*write_stream) = new CompressedLineNumberWriteStream( |
aoqi@0 | 1355 | linenumbertable_buffer, fixed_buffer_size); |
aoqi@0 | 1356 | } |
aoqi@0 | 1357 | } |
aoqi@0 | 1358 | |
aoqi@0 | 1359 | while (num_entries-- > 0) { |
aoqi@0 | 1360 | u2 bci = cfs->get_u2_fast(); // start_pc |
aoqi@0 | 1361 | u2 line = cfs->get_u2_fast(); // line_number |
aoqi@0 | 1362 | guarantee_property(bci < code_length, |
aoqi@0 | 1363 | "Invalid pc in LineNumberTable in class file %s", CHECK); |
aoqi@0 | 1364 | (*write_stream)->write_pair(bci, line); |
aoqi@0 | 1365 | } |
aoqi@0 | 1366 | } |
aoqi@0 | 1367 | |
aoqi@0 | 1368 | |
aoqi@0 | 1369 | // Class file LocalVariableTable elements. |
aoqi@0 | 1370 | class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { |
aoqi@0 | 1371 | public: |
aoqi@0 | 1372 | u2 start_bci; |
aoqi@0 | 1373 | u2 length; |
aoqi@0 | 1374 | u2 name_cp_index; |
aoqi@0 | 1375 | u2 descriptor_cp_index; |
aoqi@0 | 1376 | u2 slot; |
aoqi@0 | 1377 | }; |
aoqi@0 | 1378 | |
aoqi@0 | 1379 | |
aoqi@0 | 1380 | class LVT_Hash: public CHeapObj<mtClass> { |
aoqi@0 | 1381 | public: |
aoqi@0 | 1382 | LocalVariableTableElement *_elem; // element |
aoqi@0 | 1383 | LVT_Hash* _next; // Next entry in hash table |
aoqi@0 | 1384 | }; |
aoqi@0 | 1385 | |
aoqi@0 | 1386 | unsigned int hash(LocalVariableTableElement *elem) { |
aoqi@0 | 1387 | unsigned int raw_hash = elem->start_bci; |
aoqi@0 | 1388 | |
aoqi@0 | 1389 | raw_hash = elem->length + raw_hash * 37; |
aoqi@0 | 1390 | raw_hash = elem->name_cp_index + raw_hash * 37; |
aoqi@0 | 1391 | raw_hash = elem->slot + raw_hash * 37; |
aoqi@0 | 1392 | |
aoqi@0 | 1393 | return raw_hash % HASH_ROW_SIZE; |
aoqi@0 | 1394 | } |
aoqi@0 | 1395 | |
aoqi@0 | 1396 | void initialize_hashtable(LVT_Hash** table) { |
aoqi@0 | 1397 | for (int i = 0; i < HASH_ROW_SIZE; i++) { |
aoqi@0 | 1398 | table[i] = NULL; |
aoqi@0 | 1399 | } |
aoqi@0 | 1400 | } |
aoqi@0 | 1401 | |
aoqi@0 | 1402 | void clear_hashtable(LVT_Hash** table) { |
aoqi@0 | 1403 | for (int i = 0; i < HASH_ROW_SIZE; i++) { |
aoqi@0 | 1404 | LVT_Hash* current = table[i]; |
aoqi@0 | 1405 | LVT_Hash* next; |
aoqi@0 | 1406 | while (current != NULL) { |
aoqi@0 | 1407 | next = current->_next; |
aoqi@0 | 1408 | current->_next = NULL; |
aoqi@0 | 1409 | delete(current); |
aoqi@0 | 1410 | current = next; |
aoqi@0 | 1411 | } |
aoqi@0 | 1412 | table[i] = NULL; |
aoqi@0 | 1413 | } |
aoqi@0 | 1414 | } |
aoqi@0 | 1415 | |
aoqi@0 | 1416 | LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { |
aoqi@0 | 1417 | LVT_Hash* entry = table[index]; |
aoqi@0 | 1418 | |
aoqi@0 | 1419 | /* |
aoqi@0 | 1420 | * 3-tuple start_bci/length/slot has to be unique key, |
aoqi@0 | 1421 | * so the following comparison seems to be redundant: |
aoqi@0 | 1422 | * && elem->name_cp_index == entry->_elem->name_cp_index |
aoqi@0 | 1423 | */ |
aoqi@0 | 1424 | while (entry != NULL) { |
aoqi@0 | 1425 | if (elem->start_bci == entry->_elem->start_bci |
aoqi@0 | 1426 | && elem->length == entry->_elem->length |
aoqi@0 | 1427 | && elem->name_cp_index == entry->_elem->name_cp_index |
aoqi@0 | 1428 | && elem->slot == entry->_elem->slot |
aoqi@0 | 1429 | ) { |
aoqi@0 | 1430 | return entry; |
aoqi@0 | 1431 | } |
aoqi@0 | 1432 | entry = entry->_next; |
aoqi@0 | 1433 | } |
aoqi@0 | 1434 | return NULL; |
aoqi@0 | 1435 | } |
aoqi@0 | 1436 | |
aoqi@0 | 1437 | // Return false if the local variable is found in table. |
aoqi@0 | 1438 | // Return true if no duplicate is found. |
aoqi@0 | 1439 | // And local variable is added as a new entry in table. |
aoqi@0 | 1440 | bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { |
aoqi@0 | 1441 | // First lookup for duplicates |
aoqi@0 | 1442 | int index = hash(elem); |
aoqi@0 | 1443 | LVT_Hash* entry = LVT_lookup(elem, index, table); |
aoqi@0 | 1444 | |
aoqi@0 | 1445 | if (entry != NULL) { |
aoqi@0 | 1446 | return false; |
aoqi@0 | 1447 | } |
aoqi@0 | 1448 | // No duplicate is found, allocate a new entry and fill it. |
aoqi@0 | 1449 | if ((entry = new LVT_Hash()) == NULL) { |
aoqi@0 | 1450 | return false; |
aoqi@0 | 1451 | } |
aoqi@0 | 1452 | entry->_elem = elem; |
aoqi@0 | 1453 | |
aoqi@0 | 1454 | // Insert into hash table |
aoqi@0 | 1455 | entry->_next = table[index]; |
aoqi@0 | 1456 | table[index] = entry; |
aoqi@0 | 1457 | |
aoqi@0 | 1458 | return true; |
aoqi@0 | 1459 | } |
aoqi@0 | 1460 | |
aoqi@0 | 1461 | void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { |
aoqi@0 | 1462 | lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); |
aoqi@0 | 1463 | lvt->length = Bytes::get_Java_u2((u1*) &src->length); |
aoqi@0 | 1464 | lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); |
aoqi@0 | 1465 | lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); |
aoqi@0 | 1466 | lvt->signature_cp_index = 0; |
aoqi@0 | 1467 | lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); |
aoqi@0 | 1468 | } |
aoqi@0 | 1469 | |
aoqi@0 | 1470 | // Function is used to parse both attributes: |
aoqi@0 | 1471 | // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) |
aoqi@0 | 1472 | u2* ClassFileParser::parse_localvariable_table(u4 code_length, |
aoqi@0 | 1473 | u2 max_locals, |
aoqi@0 | 1474 | u4 code_attribute_length, |
aoqi@0 | 1475 | u2* localvariable_table_length, |
aoqi@0 | 1476 | bool isLVTT, |
aoqi@0 | 1477 | TRAPS) { |
aoqi@0 | 1478 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1479 | const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; |
aoqi@0 | 1480 | *localvariable_table_length = cfs->get_u2(CHECK_NULL); |
aoqi@0 | 1481 | unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); |
aoqi@0 | 1482 | // Verify local variable table attribute has right length |
aoqi@0 | 1483 | if (_need_verify) { |
aoqi@0 | 1484 | guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), |
aoqi@0 | 1485 | "%s has wrong length in class file %s", tbl_name, CHECK_NULL); |
aoqi@0 | 1486 | } |
aoqi@0 | 1487 | u2* localvariable_table_start = cfs->get_u2_buffer(); |
aoqi@0 | 1488 | assert(localvariable_table_start != NULL, "null local variable table"); |
aoqi@0 | 1489 | if (!_need_verify) { |
aoqi@0 | 1490 | cfs->skip_u2_fast(size); |
aoqi@0 | 1491 | } else { |
aoqi@0 | 1492 | cfs->guarantee_more(size * 2, CHECK_NULL); |
aoqi@0 | 1493 | for(int i = 0; i < (*localvariable_table_length); i++) { |
aoqi@0 | 1494 | u2 start_pc = cfs->get_u2_fast(); |
aoqi@0 | 1495 | u2 length = cfs->get_u2_fast(); |
aoqi@0 | 1496 | u2 name_index = cfs->get_u2_fast(); |
aoqi@0 | 1497 | u2 descriptor_index = cfs->get_u2_fast(); |
aoqi@0 | 1498 | u2 index = cfs->get_u2_fast(); |
aoqi@0 | 1499 | // Assign to a u4 to avoid overflow |
aoqi@0 | 1500 | u4 end_pc = (u4)start_pc + (u4)length; |
aoqi@0 | 1501 | |
aoqi@0 | 1502 | if (start_pc >= code_length) { |
aoqi@0 | 1503 | classfile_parse_error( |
aoqi@0 | 1504 | "Invalid start_pc %u in %s in class file %s", |
aoqi@0 | 1505 | start_pc, tbl_name, CHECK_NULL); |
aoqi@0 | 1506 | } |
aoqi@0 | 1507 | if (end_pc > code_length) { |
aoqi@0 | 1508 | classfile_parse_error( |
aoqi@0 | 1509 | "Invalid length %u in %s in class file %s", |
aoqi@0 | 1510 | length, tbl_name, CHECK_NULL); |
aoqi@0 | 1511 | } |
aoqi@0 | 1512 | int cp_size = _cp->length(); |
aoqi@0 | 1513 | guarantee_property(valid_symbol_at(name_index), |
aoqi@0 | 1514 | "Name index %u in %s has bad constant type in class file %s", |
aoqi@0 | 1515 | name_index, tbl_name, CHECK_NULL); |
aoqi@0 | 1516 | guarantee_property(valid_symbol_at(descriptor_index), |
aoqi@0 | 1517 | "Signature index %u in %s has bad constant type in class file %s", |
aoqi@0 | 1518 | descriptor_index, tbl_name, CHECK_NULL); |
aoqi@0 | 1519 | |
aoqi@0 | 1520 | Symbol* name = _cp->symbol_at(name_index); |
aoqi@0 | 1521 | Symbol* sig = _cp->symbol_at(descriptor_index); |
aoqi@0 | 1522 | verify_legal_field_name(name, CHECK_NULL); |
aoqi@0 | 1523 | u2 extra_slot = 0; |
aoqi@0 | 1524 | if (!isLVTT) { |
aoqi@0 | 1525 | verify_legal_field_signature(name, sig, CHECK_NULL); |
aoqi@0 | 1526 | |
aoqi@0 | 1527 | // 4894874: check special cases for double and long local variables |
aoqi@0 | 1528 | if (sig == vmSymbols::type_signature(T_DOUBLE) || |
aoqi@0 | 1529 | sig == vmSymbols::type_signature(T_LONG)) { |
aoqi@0 | 1530 | extra_slot = 1; |
aoqi@0 | 1531 | } |
aoqi@0 | 1532 | } |
aoqi@0 | 1533 | guarantee_property((index + extra_slot) < max_locals, |
aoqi@0 | 1534 | "Invalid index %u in %s in class file %s", |
aoqi@0 | 1535 | index, tbl_name, CHECK_NULL); |
aoqi@0 | 1536 | } |
aoqi@0 | 1537 | } |
aoqi@0 | 1538 | return localvariable_table_start; |
aoqi@0 | 1539 | } |
aoqi@0 | 1540 | |
aoqi@0 | 1541 | |
aoqi@0 | 1542 | void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, |
aoqi@0 | 1543 | u1* u1_array, u2* u2_array, TRAPS) { |
aoqi@0 | 1544 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1545 | u2 index = 0; // index in the array with long/double occupying two slots |
aoqi@0 | 1546 | u4 i1 = *u1_index; |
aoqi@0 | 1547 | u4 i2 = *u2_index + 1; |
aoqi@0 | 1548 | for(int i = 0; i < array_length; i++) { |
aoqi@0 | 1549 | u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); |
aoqi@0 | 1550 | index++; |
aoqi@0 | 1551 | if (tag == ITEM_Long || tag == ITEM_Double) { |
aoqi@0 | 1552 | index++; |
aoqi@0 | 1553 | } else if (tag == ITEM_Object) { |
aoqi@0 | 1554 | u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); |
aoqi@0 | 1555 | guarantee_property(valid_klass_reference_at(class_index), |
aoqi@0 | 1556 | "Bad class index %u in StackMap in class file %s", |
aoqi@0 | 1557 | class_index, CHECK); |
aoqi@0 | 1558 | } else if (tag == ITEM_Uninitialized) { |
aoqi@0 | 1559 | u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); |
aoqi@0 | 1560 | guarantee_property( |
aoqi@0 | 1561 | offset < code_length, |
aoqi@0 | 1562 | "Bad uninitialized type offset %u in StackMap in class file %s", |
aoqi@0 | 1563 | offset, CHECK); |
aoqi@0 | 1564 | } else { |
aoqi@0 | 1565 | guarantee_property( |
aoqi@0 | 1566 | tag <= (u1)ITEM_Uninitialized, |
aoqi@0 | 1567 | "Unknown variable type %u in StackMap in class file %s", |
aoqi@0 | 1568 | tag, CHECK); |
aoqi@0 | 1569 | } |
aoqi@0 | 1570 | } |
aoqi@0 | 1571 | u2_array[*u2_index] = index; |
aoqi@0 | 1572 | *u1_index = i1; |
aoqi@0 | 1573 | *u2_index = i2; |
aoqi@0 | 1574 | } |
aoqi@0 | 1575 | |
aoqi@0 | 1576 | u1* ClassFileParser::parse_stackmap_table( |
aoqi@0 | 1577 | u4 code_attribute_length, TRAPS) { |
aoqi@0 | 1578 | if (code_attribute_length == 0) |
aoqi@0 | 1579 | return NULL; |
aoqi@0 | 1580 | |
aoqi@0 | 1581 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1582 | u1* stackmap_table_start = cfs->get_u1_buffer(); |
aoqi@0 | 1583 | assert(stackmap_table_start != NULL, "null stackmap table"); |
aoqi@0 | 1584 | |
aoqi@0 | 1585 | // check code_attribute_length first |
aoqi@0 | 1586 | stream()->skip_u1(code_attribute_length, CHECK_NULL); |
aoqi@0 | 1587 | |
aoqi@0 | 1588 | if (!_need_verify && !DumpSharedSpaces) { |
aoqi@0 | 1589 | return NULL; |
aoqi@0 | 1590 | } |
aoqi@0 | 1591 | return stackmap_table_start; |
aoqi@0 | 1592 | } |
aoqi@0 | 1593 | |
aoqi@0 | 1594 | u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, |
aoqi@0 | 1595 | u4 method_attribute_length, |
aoqi@0 | 1596 | TRAPS) { |
aoqi@0 | 1597 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1598 | cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length |
aoqi@0 | 1599 | *checked_exceptions_length = cfs->get_u2_fast(); |
aoqi@0 | 1600 | unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); |
aoqi@0 | 1601 | u2* checked_exceptions_start = cfs->get_u2_buffer(); |
aoqi@0 | 1602 | assert(checked_exceptions_start != NULL, "null checked exceptions"); |
aoqi@0 | 1603 | if (!_need_verify) { |
aoqi@0 | 1604 | cfs->skip_u2_fast(size); |
aoqi@0 | 1605 | } else { |
aoqi@0 | 1606 | // Verify each value in the checked exception table |
aoqi@0 | 1607 | u2 checked_exception; |
aoqi@0 | 1608 | u2 len = *checked_exceptions_length; |
aoqi@0 | 1609 | cfs->guarantee_more(2 * len, CHECK_NULL); |
aoqi@0 | 1610 | for (int i = 0; i < len; i++) { |
aoqi@0 | 1611 | checked_exception = cfs->get_u2_fast(); |
aoqi@0 | 1612 | check_property( |
aoqi@0 | 1613 | valid_klass_reference_at(checked_exception), |
aoqi@0 | 1614 | "Exception name has bad type at constant pool %u in class file %s", |
aoqi@0 | 1615 | checked_exception, CHECK_NULL); |
aoqi@0 | 1616 | } |
aoqi@0 | 1617 | } |
aoqi@0 | 1618 | // check exceptions attribute length |
aoqi@0 | 1619 | if (_need_verify) { |
aoqi@0 | 1620 | guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + |
aoqi@0 | 1621 | sizeof(u2) * size), |
aoqi@0 | 1622 | "Exceptions attribute has wrong length in class file %s", CHECK_NULL); |
aoqi@0 | 1623 | } |
aoqi@0 | 1624 | return checked_exceptions_start; |
aoqi@0 | 1625 | } |
aoqi@0 | 1626 | |
aoqi@0 | 1627 | void ClassFileParser::throwIllegalSignature( |
aoqi@0 | 1628 | const char* type, Symbol* name, Symbol* sig, TRAPS) { |
aoqi@0 | 1629 | ResourceMark rm(THREAD); |
aoqi@0 | 1630 | Exceptions::fthrow(THREAD_AND_LOCATION, |
aoqi@0 | 1631 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 1632 | "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
aoqi@0 | 1633 | name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
aoqi@0 | 1634 | } |
aoqi@0 | 1635 | |
aoqi@0 | 1636 | // Skip an annotation. Return >=limit if there is any problem. |
aoqi@0 | 1637 | int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
aoqi@0 | 1638 | // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
aoqi@0 | 1639 | // value := switch (tag:u1) { ... } |
aoqi@0 | 1640 | index += 2; // skip atype |
aoqi@0 | 1641 | if ((index += 2) >= limit) return limit; // read nmem |
aoqi@0 | 1642 | int nmem = Bytes::get_Java_u2(buffer+index-2); |
aoqi@0 | 1643 | while (--nmem >= 0 && index < limit) { |
aoqi@0 | 1644 | index += 2; // skip member |
aoqi@0 | 1645 | index = skip_annotation_value(buffer, limit, index); |
aoqi@0 | 1646 | } |
aoqi@0 | 1647 | return index; |
aoqi@0 | 1648 | } |
aoqi@0 | 1649 | |
aoqi@0 | 1650 | // Skip an annotation value. Return >=limit if there is any problem. |
aoqi@0 | 1651 | int ClassFileParser::skip_annotation_value(u1* buffer, int limit, int index) { |
aoqi@0 | 1652 | // value := switch (tag:u1) { |
aoqi@0 | 1653 | // case B, C, I, S, Z, D, F, J, c: con:u2; |
aoqi@0 | 1654 | // case e: e_class:u2 e_name:u2; |
aoqi@0 | 1655 | // case s: s_con:u2; |
aoqi@0 | 1656 | // case [: do(nval:u2) {value}; |
aoqi@0 | 1657 | // case @: annotation; |
aoqi@0 | 1658 | // case s: s_con:u2; |
aoqi@0 | 1659 | // } |
aoqi@0 | 1660 | if ((index += 1) >= limit) return limit; // read tag |
aoqi@0 | 1661 | u1 tag = buffer[index-1]; |
aoqi@0 | 1662 | switch (tag) { |
aoqi@0 | 1663 | case 'B': case 'C': case 'I': case 'S': case 'Z': |
aoqi@0 | 1664 | case 'D': case 'F': case 'J': case 'c': case 's': |
aoqi@0 | 1665 | index += 2; // skip con or s_con |
aoqi@0 | 1666 | break; |
aoqi@0 | 1667 | case 'e': |
aoqi@0 | 1668 | index += 4; // skip e_class, e_name |
aoqi@0 | 1669 | break; |
aoqi@0 | 1670 | case '[': |
aoqi@0 | 1671 | { |
aoqi@0 | 1672 | if ((index += 2) >= limit) return limit; // read nval |
aoqi@0 | 1673 | int nval = Bytes::get_Java_u2(buffer+index-2); |
aoqi@0 | 1674 | while (--nval >= 0 && index < limit) { |
aoqi@0 | 1675 | index = skip_annotation_value(buffer, limit, index); |
aoqi@0 | 1676 | } |
aoqi@0 | 1677 | } |
aoqi@0 | 1678 | break; |
aoqi@0 | 1679 | case '@': |
aoqi@0 | 1680 | index = skip_annotation(buffer, limit, index); |
aoqi@0 | 1681 | break; |
aoqi@0 | 1682 | default: |
aoqi@0 | 1683 | assert(false, "annotation tag"); |
aoqi@0 | 1684 | return limit; // bad tag byte |
aoqi@0 | 1685 | } |
aoqi@0 | 1686 | return index; |
aoqi@0 | 1687 | } |
aoqi@0 | 1688 | |
aoqi@0 | 1689 | // Sift through annotations, looking for those significant to the VM: |
aoqi@0 | 1690 | void ClassFileParser::parse_annotations(u1* buffer, int limit, |
aoqi@0 | 1691 | ClassFileParser::AnnotationCollector* coll, |
aoqi@0 | 1692 | TRAPS) { |
aoqi@0 | 1693 | // annotations := do(nann:u2) {annotation} |
aoqi@0 | 1694 | int index = 0; |
aoqi@0 | 1695 | if ((index += 2) >= limit) return; // read nann |
aoqi@0 | 1696 | int nann = Bytes::get_Java_u2(buffer+index-2); |
aoqi@0 | 1697 | enum { // initial annotation layout |
aoqi@0 | 1698 | atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
aoqi@0 | 1699 | count_off = 2, // u2 such as 1 (one value) |
aoqi@0 | 1700 | member_off = 4, // utf8 such as 'value' |
aoqi@0 | 1701 | tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
aoqi@0 | 1702 | e_tag_val = 'e', |
aoqi@0 | 1703 | e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
aoqi@0 | 1704 | e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
aoqi@0 | 1705 | e_size = 11, // end of 'e' annotation |
aoqi@0 | 1706 | c_tag_val = 'c', // payload is type |
aoqi@0 | 1707 | c_con_off = 7, // utf8 payload, such as 'I' |
aoqi@0 | 1708 | c_size = 9, // end of 'c' annotation |
aoqi@0 | 1709 | s_tag_val = 's', // payload is String |
aoqi@0 | 1710 | s_con_off = 7, // utf8 payload, such as 'Ljava/lang/String;' |
aoqi@0 | 1711 | s_size = 9, |
aoqi@0 | 1712 | min_size = 6 // smallest possible size (zero members) |
aoqi@0 | 1713 | }; |
aoqi@0 | 1714 | while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
aoqi@0 | 1715 | int index0 = index; |
aoqi@0 | 1716 | index = skip_annotation(buffer, limit, index); |
aoqi@0 | 1717 | u1* abase = buffer + index0; |
aoqi@0 | 1718 | int atype = Bytes::get_Java_u2(abase + atype_off); |
aoqi@0 | 1719 | int count = Bytes::get_Java_u2(abase + count_off); |
aoqi@0 | 1720 | Symbol* aname = check_symbol_at(_cp, atype); |
aoqi@0 | 1721 | if (aname == NULL) break; // invalid annotation name |
aoqi@0 | 1722 | Symbol* member = NULL; |
aoqi@0 | 1723 | if (count >= 1) { |
aoqi@0 | 1724 | int member_index = Bytes::get_Java_u2(abase + member_off); |
aoqi@0 | 1725 | member = check_symbol_at(_cp, member_index); |
aoqi@0 | 1726 | if (member == NULL) break; // invalid member name |
aoqi@0 | 1727 | } |
aoqi@0 | 1728 | |
aoqi@0 | 1729 | // Here is where parsing particular annotations will take place. |
aoqi@0 | 1730 | AnnotationCollector::ID id = coll->annotation_index(_loader_data, aname); |
aoqi@0 | 1731 | if (id == AnnotationCollector::_unknown) continue; |
aoqi@0 | 1732 | coll->set_annotation(id); |
aoqi@0 | 1733 | |
aoqi@0 | 1734 | if (id == AnnotationCollector::_sun_misc_Contended) { |
aoqi@0 | 1735 | // @Contended can optionally specify the contention group. |
aoqi@0 | 1736 | // |
aoqi@0 | 1737 | // Contended group defines the equivalence class over the fields: |
aoqi@0 | 1738 | // the fields within the same contended group are not treated distinct. |
aoqi@0 | 1739 | // The only exception is default group, which does not incur the |
aoqi@0 | 1740 | // equivalence. Naturally, contention group for classes is meaningless. |
aoqi@0 | 1741 | // |
aoqi@0 | 1742 | // While the contention group is specified as String, annotation |
aoqi@0 | 1743 | // values are already interned, and we might as well use the constant |
aoqi@0 | 1744 | // pool index as the group tag. |
aoqi@0 | 1745 | // |
aoqi@0 | 1746 | u2 group_index = 0; // default contended group |
aoqi@0 | 1747 | if (count == 1 |
aoqi@0 | 1748 | && s_size == (index - index0) // match size |
aoqi@0 | 1749 | && s_tag_val == *(abase + tag_off) |
aoqi@0 | 1750 | && member == vmSymbols::value_name()) { |
aoqi@0 | 1751 | group_index = Bytes::get_Java_u2(abase + s_con_off); |
aoqi@0 | 1752 | if (_cp->symbol_at(group_index)->utf8_length() == 0) { |
aoqi@0 | 1753 | group_index = 0; // default contended group |
aoqi@0 | 1754 | } |
aoqi@0 | 1755 | } |
aoqi@0 | 1756 | coll->set_contended_group(group_index); |
aoqi@0 | 1757 | } |
aoqi@0 | 1758 | } |
aoqi@0 | 1759 | } |
aoqi@0 | 1760 | |
aoqi@0 | 1761 | ClassFileParser::AnnotationCollector::ID |
aoqi@0 | 1762 | ClassFileParser::AnnotationCollector::annotation_index(ClassLoaderData* loader_data, |
aoqi@0 | 1763 | Symbol* name) { |
aoqi@0 | 1764 | vmSymbols::SID sid = vmSymbols::find_sid(name); |
aoqi@0 | 1765 | // Privileged code can use all annotations. Other code silently drops some. |
aoqi@0 | 1766 | const bool privileged = loader_data->is_the_null_class_loader_data() || |
aoqi@0 | 1767 | loader_data->is_ext_class_loader_data() || |
aoqi@0 | 1768 | loader_data->is_anonymous(); |
aoqi@0 | 1769 | switch (sid) { |
aoqi@0 | 1770 | case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_reflect_CallerSensitive_signature): |
aoqi@0 | 1771 | if (_location != _in_method) break; // only allow for methods |
aoqi@0 | 1772 | if (!privileged) break; // only allow in privileged code |
aoqi@0 | 1773 | return _method_CallerSensitive; |
aoqi@0 | 1774 | case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
aoqi@0 | 1775 | if (_location != _in_method) break; // only allow for methods |
aoqi@0 | 1776 | if (!privileged) break; // only allow in privileged code |
aoqi@0 | 1777 | return _method_ForceInline; |
aoqi@0 | 1778 | case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
aoqi@0 | 1779 | if (_location != _in_method) break; // only allow for methods |
aoqi@0 | 1780 | if (!privileged) break; // only allow in privileged code |
aoqi@0 | 1781 | return _method_DontInline; |
aoqi@0 | 1782 | case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
aoqi@0 | 1783 | if (_location != _in_method) break; // only allow for methods |
aoqi@0 | 1784 | if (!privileged) break; // only allow in privileged code |
aoqi@0 | 1785 | return _method_LambdaForm_Compiled; |
aoqi@0 | 1786 | case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
aoqi@0 | 1787 | if (_location != _in_method) break; // only allow for methods |
aoqi@0 | 1788 | if (!privileged) break; // only allow in privileged code |
aoqi@0 | 1789 | return _method_LambdaForm_Hidden; |
aoqi@0 | 1790 | case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_Stable_signature): |
aoqi@0 | 1791 | if (_location != _in_field) break; // only allow for fields |
aoqi@0 | 1792 | if (!privileged) break; // only allow in privileged code |
aoqi@0 | 1793 | return _field_Stable; |
aoqi@0 | 1794 | case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_misc_Contended_signature): |
aoqi@0 | 1795 | if (_location != _in_field && _location != _in_class) break; // only allow for fields and classes |
aoqi@0 | 1796 | if (!EnableContended || (RestrictContended && !privileged)) break; // honor privileges |
aoqi@0 | 1797 | return _sun_misc_Contended; |
aoqi@0 | 1798 | default: break; |
aoqi@0 | 1799 | } |
aoqi@0 | 1800 | return AnnotationCollector::_unknown; |
aoqi@0 | 1801 | } |
aoqi@0 | 1802 | |
aoqi@0 | 1803 | void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
aoqi@0 | 1804 | if (is_contended()) |
aoqi@0 | 1805 | f->set_contended_group(contended_group()); |
aoqi@0 | 1806 | if (is_stable()) |
aoqi@0 | 1807 | f->set_stable(true); |
aoqi@0 | 1808 | } |
aoqi@0 | 1809 | |
aoqi@0 | 1810 | ClassFileParser::FieldAnnotationCollector::~FieldAnnotationCollector() { |
aoqi@0 | 1811 | // If there's an error deallocate metadata for field annotations |
aoqi@0 | 1812 | MetadataFactory::free_array<u1>(_loader_data, _field_annotations); |
aoqi@0 | 1813 | MetadataFactory::free_array<u1>(_loader_data, _field_type_annotations); |
aoqi@0 | 1814 | } |
aoqi@0 | 1815 | |
aoqi@0 | 1816 | void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
aoqi@0 | 1817 | if (has_annotation(_method_CallerSensitive)) |
aoqi@0 | 1818 | m->set_caller_sensitive(true); |
aoqi@0 | 1819 | if (has_annotation(_method_ForceInline)) |
aoqi@0 | 1820 | m->set_force_inline(true); |
aoqi@0 | 1821 | if (has_annotation(_method_DontInline)) |
aoqi@0 | 1822 | m->set_dont_inline(true); |
aoqi@0 | 1823 | if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
aoqi@0 | 1824 | m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
aoqi@0 | 1825 | if (has_annotation(_method_LambdaForm_Hidden)) |
aoqi@0 | 1826 | m->set_hidden(true); |
aoqi@0 | 1827 | } |
aoqi@0 | 1828 | |
aoqi@0 | 1829 | void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
aoqi@0 | 1830 | k->set_is_contended(is_contended()); |
aoqi@0 | 1831 | } |
aoqi@0 | 1832 | |
aoqi@0 | 1833 | |
aoqi@0 | 1834 | #define MAX_ARGS_SIZE 255 |
aoqi@0 | 1835 | #define MAX_CODE_SIZE 65535 |
aoqi@0 | 1836 | #define INITIAL_MAX_LVT_NUMBER 256 |
aoqi@0 | 1837 | |
aoqi@0 | 1838 | /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
aoqi@0 | 1839 | * |
aoqi@0 | 1840 | * Rules for LVT's and LVTT's are: |
aoqi@0 | 1841 | * - There can be any number of LVT's and LVTT's. |
aoqi@0 | 1842 | * - If there are n LVT's, it is the same as if there was just |
aoqi@0 | 1843 | * one LVT containing all the entries from the n LVT's. |
aoqi@0 | 1844 | * - There may be no more than one LVT entry per local variable. |
aoqi@0 | 1845 | * Two LVT entries are 'equal' if these fields are the same: |
aoqi@0 | 1846 | * start_pc, length, name, slot |
aoqi@0 | 1847 | * - There may be no more than one LVTT entry per each LVT entry. |
aoqi@0 | 1848 | * Each LVTT entry has to match some LVT entry. |
aoqi@0 | 1849 | * - HotSpot internal LVT keeps natural ordering of class file LVT entries. |
aoqi@0 | 1850 | */ |
aoqi@0 | 1851 | void ClassFileParser::copy_localvariable_table(ConstMethod* cm, |
aoqi@0 | 1852 | int lvt_cnt, |
aoqi@0 | 1853 | u2* localvariable_table_length, |
aoqi@0 | 1854 | u2** localvariable_table_start, |
aoqi@0 | 1855 | int lvtt_cnt, |
aoqi@0 | 1856 | u2* localvariable_type_table_length, |
aoqi@0 | 1857 | u2** localvariable_type_table_start, |
aoqi@0 | 1858 | TRAPS) { |
aoqi@0 | 1859 | |
aoqi@0 | 1860 | LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); |
aoqi@0 | 1861 | initialize_hashtable(lvt_Hash); |
aoqi@0 | 1862 | |
aoqi@0 | 1863 | // To fill LocalVariableTable in |
aoqi@0 | 1864 | Classfile_LVT_Element* cf_lvt; |
aoqi@0 | 1865 | LocalVariableTableElement* lvt = cm->localvariable_table_start(); |
aoqi@0 | 1866 | |
aoqi@0 | 1867 | for (int tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { |
aoqi@0 | 1868 | cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; |
aoqi@0 | 1869 | for (int idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { |
aoqi@0 | 1870 | copy_lvt_element(&cf_lvt[idx], lvt); |
aoqi@0 | 1871 | // If no duplicates, add LVT elem in hashtable lvt_Hash. |
aoqi@0 | 1872 | if (LVT_put_after_lookup(lvt, lvt_Hash) == false |
aoqi@0 | 1873 | && _need_verify |
aoqi@0 | 1874 | && _major_version >= JAVA_1_5_VERSION) { |
aoqi@0 | 1875 | clear_hashtable(lvt_Hash); |
aoqi@0 | 1876 | classfile_parse_error("Duplicated LocalVariableTable attribute " |
aoqi@0 | 1877 | "entry for '%s' in class file %s", |
aoqi@0 | 1878 | _cp->symbol_at(lvt->name_cp_index)->as_utf8(), |
aoqi@0 | 1879 | CHECK); |
aoqi@0 | 1880 | } |
aoqi@0 | 1881 | } |
aoqi@0 | 1882 | } |
aoqi@0 | 1883 | |
aoqi@0 | 1884 | // To merge LocalVariableTable and LocalVariableTypeTable |
aoqi@0 | 1885 | Classfile_LVT_Element* cf_lvtt; |
aoqi@0 | 1886 | LocalVariableTableElement lvtt_elem; |
aoqi@0 | 1887 | |
aoqi@0 | 1888 | for (int tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { |
aoqi@0 | 1889 | cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; |
aoqi@0 | 1890 | for (int idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { |
aoqi@0 | 1891 | copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); |
aoqi@0 | 1892 | int index = hash(&lvtt_elem); |
aoqi@0 | 1893 | LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); |
aoqi@0 | 1894 | if (entry == NULL) { |
aoqi@0 | 1895 | if (_need_verify) { |
aoqi@0 | 1896 | clear_hashtable(lvt_Hash); |
aoqi@0 | 1897 | classfile_parse_error("LVTT entry for '%s' in class file %s " |
aoqi@0 | 1898 | "does not match any LVT entry", |
aoqi@0 | 1899 | _cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
aoqi@0 | 1900 | CHECK); |
aoqi@0 | 1901 | } |
aoqi@0 | 1902 | } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { |
aoqi@0 | 1903 | clear_hashtable(lvt_Hash); |
aoqi@0 | 1904 | classfile_parse_error("Duplicated LocalVariableTypeTable attribute " |
aoqi@0 | 1905 | "entry for '%s' in class file %s", |
aoqi@0 | 1906 | _cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
aoqi@0 | 1907 | CHECK); |
aoqi@0 | 1908 | } else { |
aoqi@0 | 1909 | // to add generic signatures into LocalVariableTable |
aoqi@0 | 1910 | entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; |
aoqi@0 | 1911 | } |
aoqi@0 | 1912 | } |
aoqi@0 | 1913 | } |
aoqi@0 | 1914 | clear_hashtable(lvt_Hash); |
aoqi@0 | 1915 | } |
aoqi@0 | 1916 | |
aoqi@0 | 1917 | |
aoqi@0 | 1918 | void ClassFileParser::copy_method_annotations(ConstMethod* cm, |
aoqi@0 | 1919 | u1* runtime_visible_annotations, |
aoqi@0 | 1920 | int runtime_visible_annotations_length, |
aoqi@0 | 1921 | u1* runtime_invisible_annotations, |
aoqi@0 | 1922 | int runtime_invisible_annotations_length, |
aoqi@0 | 1923 | u1* runtime_visible_parameter_annotations, |
aoqi@0 | 1924 | int runtime_visible_parameter_annotations_length, |
aoqi@0 | 1925 | u1* runtime_invisible_parameter_annotations, |
aoqi@0 | 1926 | int runtime_invisible_parameter_annotations_length, |
aoqi@0 | 1927 | u1* runtime_visible_type_annotations, |
aoqi@0 | 1928 | int runtime_visible_type_annotations_length, |
aoqi@0 | 1929 | u1* runtime_invisible_type_annotations, |
aoqi@0 | 1930 | int runtime_invisible_type_annotations_length, |
aoqi@0 | 1931 | u1* annotation_default, |
aoqi@0 | 1932 | int annotation_default_length, |
aoqi@0 | 1933 | TRAPS) { |
aoqi@0 | 1934 | |
aoqi@0 | 1935 | AnnotationArray* a; |
aoqi@0 | 1936 | |
aoqi@0 | 1937 | if (runtime_visible_annotations_length + |
aoqi@0 | 1938 | runtime_invisible_annotations_length > 0) { |
aoqi@0 | 1939 | a = assemble_annotations(runtime_visible_annotations, |
aoqi@0 | 1940 | runtime_visible_annotations_length, |
aoqi@0 | 1941 | runtime_invisible_annotations, |
aoqi@0 | 1942 | runtime_invisible_annotations_length, |
aoqi@0 | 1943 | CHECK); |
aoqi@0 | 1944 | cm->set_method_annotations(a); |
aoqi@0 | 1945 | } |
aoqi@0 | 1946 | |
aoqi@0 | 1947 | if (runtime_visible_parameter_annotations_length + |
aoqi@0 | 1948 | runtime_invisible_parameter_annotations_length > 0) { |
aoqi@0 | 1949 | a = assemble_annotations(runtime_visible_parameter_annotations, |
aoqi@0 | 1950 | runtime_visible_parameter_annotations_length, |
aoqi@0 | 1951 | runtime_invisible_parameter_annotations, |
aoqi@0 | 1952 | runtime_invisible_parameter_annotations_length, |
aoqi@0 | 1953 | CHECK); |
aoqi@0 | 1954 | cm->set_parameter_annotations(a); |
aoqi@0 | 1955 | } |
aoqi@0 | 1956 | |
aoqi@0 | 1957 | if (annotation_default_length > 0) { |
aoqi@0 | 1958 | a = assemble_annotations(annotation_default, |
aoqi@0 | 1959 | annotation_default_length, |
aoqi@0 | 1960 | NULL, |
aoqi@0 | 1961 | 0, |
aoqi@0 | 1962 | CHECK); |
aoqi@0 | 1963 | cm->set_default_annotations(a); |
aoqi@0 | 1964 | } |
aoqi@0 | 1965 | |
aoqi@0 | 1966 | if (runtime_visible_type_annotations_length + |
aoqi@0 | 1967 | runtime_invisible_type_annotations_length > 0) { |
aoqi@0 | 1968 | a = assemble_annotations(runtime_visible_type_annotations, |
aoqi@0 | 1969 | runtime_visible_type_annotations_length, |
aoqi@0 | 1970 | runtime_invisible_type_annotations, |
aoqi@0 | 1971 | runtime_invisible_type_annotations_length, |
aoqi@0 | 1972 | CHECK); |
aoqi@0 | 1973 | cm->set_type_annotations(a); |
aoqi@0 | 1974 | } |
aoqi@0 | 1975 | } |
aoqi@0 | 1976 | |
aoqi@0 | 1977 | |
aoqi@0 | 1978 | // Note: the parse_method below is big and clunky because all parsing of the code and exceptions |
aoqi@0 | 1979 | // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
aoqi@0 | 1980 | // Method* to save footprint, so we only know the size of the resulting Method* when the |
aoqi@0 | 1981 | // entire method attribute is parsed. |
aoqi@0 | 1982 | // |
aoqi@0 | 1983 | // The promoted_flags parameter is used to pass relevant access_flags |
aoqi@0 | 1984 | // from the method back up to the containing klass. These flag values |
aoqi@0 | 1985 | // are added to klass's access_flags. |
aoqi@0 | 1986 | |
aoqi@0 | 1987 | methodHandle ClassFileParser::parse_method(bool is_interface, |
aoqi@0 | 1988 | AccessFlags *promoted_flags, |
aoqi@0 | 1989 | TRAPS) { |
aoqi@0 | 1990 | ClassFileStream* cfs = stream(); |
aoqi@0 | 1991 | methodHandle nullHandle; |
aoqi@0 | 1992 | ResourceMark rm(THREAD); |
aoqi@0 | 1993 | // Parse fixed parts |
aoqi@0 | 1994 | cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count |
aoqi@0 | 1995 | |
aoqi@0 | 1996 | int flags = cfs->get_u2_fast(); |
aoqi@0 | 1997 | u2 name_index = cfs->get_u2_fast(); |
aoqi@0 | 1998 | int cp_size = _cp->length(); |
aoqi@0 | 1999 | check_property( |
aoqi@0 | 2000 | valid_symbol_at(name_index), |
aoqi@0 | 2001 | "Illegal constant pool index %u for method name in class file %s", |
aoqi@0 | 2002 | name_index, CHECK_(nullHandle)); |
aoqi@0 | 2003 | Symbol* name = _cp->symbol_at(name_index); |
aoqi@0 | 2004 | verify_legal_method_name(name, CHECK_(nullHandle)); |
aoqi@0 | 2005 | |
aoqi@0 | 2006 | u2 signature_index = cfs->get_u2_fast(); |
aoqi@0 | 2007 | guarantee_property( |
aoqi@0 | 2008 | valid_symbol_at(signature_index), |
aoqi@0 | 2009 | "Illegal constant pool index %u for method signature in class file %s", |
aoqi@0 | 2010 | signature_index, CHECK_(nullHandle)); |
aoqi@0 | 2011 | Symbol* signature = _cp->symbol_at(signature_index); |
aoqi@0 | 2012 | |
aoqi@0 | 2013 | AccessFlags access_flags; |
aoqi@0 | 2014 | if (name == vmSymbols::class_initializer_name()) { |
aoqi@0 | 2015 | // We ignore the other access flags for a valid class initializer. |
aoqi@0 | 2016 | // (JVM Spec 2nd ed., chapter 4.6) |
aoqi@0 | 2017 | if (_major_version < 51) { // backward compatibility |
aoqi@0 | 2018 | flags = JVM_ACC_STATIC; |
aoqi@0 | 2019 | } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
aoqi@0 | 2020 | flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
aoqi@0 | 2021 | } |
aoqi@0 | 2022 | } else { |
aoqi@0 | 2023 | verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); |
aoqi@0 | 2024 | } |
aoqi@0 | 2025 | |
aoqi@0 | 2026 | int args_size = -1; // only used when _need_verify is true |
aoqi@0 | 2027 | if (_need_verify) { |
aoqi@0 | 2028 | args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + |
aoqi@0 | 2029 | verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
aoqi@0 | 2030 | if (args_size > MAX_ARGS_SIZE) { |
aoqi@0 | 2031 | classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2032 | } |
aoqi@0 | 2033 | } |
aoqi@0 | 2034 | |
aoqi@0 | 2035 | access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); |
aoqi@0 | 2036 | |
aoqi@0 | 2037 | // Default values for code and exceptions attribute elements |
aoqi@0 | 2038 | u2 max_stack = 0; |
aoqi@0 | 2039 | u2 max_locals = 0; |
aoqi@0 | 2040 | u4 code_length = 0; |
aoqi@0 | 2041 | u1* code_start = 0; |
aoqi@0 | 2042 | u2 exception_table_length = 0; |
aoqi@0 | 2043 | u2* exception_table_start = NULL; |
aoqi@0 | 2044 | Array<int>* exception_handlers = Universe::the_empty_int_array(); |
aoqi@0 | 2045 | u2 checked_exceptions_length = 0; |
aoqi@0 | 2046 | u2* checked_exceptions_start = NULL; |
aoqi@0 | 2047 | CompressedLineNumberWriteStream* linenumber_table = NULL; |
aoqi@0 | 2048 | int linenumber_table_length = 0; |
aoqi@0 | 2049 | int total_lvt_length = 0; |
aoqi@0 | 2050 | u2 lvt_cnt = 0; |
aoqi@0 | 2051 | u2 lvtt_cnt = 0; |
aoqi@0 | 2052 | bool lvt_allocated = false; |
aoqi@0 | 2053 | u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; |
aoqi@0 | 2054 | u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; |
aoqi@0 | 2055 | u2* localvariable_table_length; |
aoqi@0 | 2056 | u2** localvariable_table_start; |
aoqi@0 | 2057 | u2* localvariable_type_table_length; |
aoqi@0 | 2058 | u2** localvariable_type_table_start; |
aoqi@0 | 2059 | u2 method_parameters_length = 0; |
aoqi@0 | 2060 | u1* method_parameters_data = NULL; |
aoqi@0 | 2061 | bool method_parameters_seen = false; |
aoqi@0 | 2062 | bool parsed_code_attribute = false; |
aoqi@0 | 2063 | bool parsed_checked_exceptions_attribute = false; |
aoqi@0 | 2064 | bool parsed_stackmap_attribute = false; |
aoqi@0 | 2065 | // stackmap attribute - JDK1.5 |
aoqi@0 | 2066 | u1* stackmap_data = NULL; |
aoqi@0 | 2067 | int stackmap_data_length = 0; |
aoqi@0 | 2068 | u2 generic_signature_index = 0; |
aoqi@0 | 2069 | MethodAnnotationCollector parsed_annotations; |
aoqi@0 | 2070 | u1* runtime_visible_annotations = NULL; |
aoqi@0 | 2071 | int runtime_visible_annotations_length = 0; |
aoqi@0 | 2072 | u1* runtime_invisible_annotations = NULL; |
aoqi@0 | 2073 | int runtime_invisible_annotations_length = 0; |
aoqi@0 | 2074 | u1* runtime_visible_parameter_annotations = NULL; |
aoqi@0 | 2075 | int runtime_visible_parameter_annotations_length = 0; |
aoqi@0 | 2076 | u1* runtime_invisible_parameter_annotations = NULL; |
aoqi@0 | 2077 | int runtime_invisible_parameter_annotations_length = 0; |
aoqi@0 | 2078 | u1* runtime_visible_type_annotations = NULL; |
aoqi@0 | 2079 | int runtime_visible_type_annotations_length = 0; |
aoqi@0 | 2080 | u1* runtime_invisible_type_annotations = NULL; |
aoqi@0 | 2081 | int runtime_invisible_type_annotations_length = 0; |
aoqi@0 | 2082 | bool runtime_invisible_type_annotations_exists = false; |
aoqi@0 | 2083 | u1* annotation_default = NULL; |
aoqi@0 | 2084 | int annotation_default_length = 0; |
aoqi@0 | 2085 | |
aoqi@0 | 2086 | // Parse code and exceptions attribute |
aoqi@0 | 2087 | u2 method_attributes_count = cfs->get_u2_fast(); |
aoqi@0 | 2088 | while (method_attributes_count--) { |
aoqi@0 | 2089 | cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length |
aoqi@0 | 2090 | u2 method_attribute_name_index = cfs->get_u2_fast(); |
aoqi@0 | 2091 | u4 method_attribute_length = cfs->get_u4_fast(); |
aoqi@0 | 2092 | check_property( |
aoqi@0 | 2093 | valid_symbol_at(method_attribute_name_index), |
aoqi@0 | 2094 | "Invalid method attribute name index %u in class file %s", |
aoqi@0 | 2095 | method_attribute_name_index, CHECK_(nullHandle)); |
aoqi@0 | 2096 | |
aoqi@0 | 2097 | Symbol* method_attribute_name = _cp->symbol_at(method_attribute_name_index); |
aoqi@0 | 2098 | if (method_attribute_name == vmSymbols::tag_code()) { |
aoqi@0 | 2099 | // Parse Code attribute |
aoqi@0 | 2100 | if (_need_verify) { |
aoqi@0 | 2101 | guarantee_property( |
aoqi@0 | 2102 | !access_flags.is_native() && !access_flags.is_abstract(), |
aoqi@0 | 2103 | "Code attribute in native or abstract methods in class file %s", |
aoqi@0 | 2104 | CHECK_(nullHandle)); |
aoqi@0 | 2105 | } |
aoqi@0 | 2106 | if (parsed_code_attribute) { |
aoqi@0 | 2107 | classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2108 | } |
aoqi@0 | 2109 | parsed_code_attribute = true; |
aoqi@0 | 2110 | |
aoqi@0 | 2111 | // Stack size, locals size, and code size |
aoqi@0 | 2112 | if (_major_version == 45 && _minor_version <= 2) { |
aoqi@0 | 2113 | cfs->guarantee_more(4, CHECK_(nullHandle)); |
aoqi@0 | 2114 | max_stack = cfs->get_u1_fast(); |
aoqi@0 | 2115 | max_locals = cfs->get_u1_fast(); |
aoqi@0 | 2116 | code_length = cfs->get_u2_fast(); |
aoqi@0 | 2117 | } else { |
aoqi@0 | 2118 | cfs->guarantee_more(8, CHECK_(nullHandle)); |
aoqi@0 | 2119 | max_stack = cfs->get_u2_fast(); |
aoqi@0 | 2120 | max_locals = cfs->get_u2_fast(); |
aoqi@0 | 2121 | code_length = cfs->get_u4_fast(); |
aoqi@0 | 2122 | } |
aoqi@0 | 2123 | if (_need_verify) { |
aoqi@0 | 2124 | guarantee_property(args_size <= max_locals, |
aoqi@0 | 2125 | "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2126 | guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, |
aoqi@0 | 2127 | "Invalid method Code length %u in class file %s", |
aoqi@0 | 2128 | code_length, CHECK_(nullHandle)); |
aoqi@0 | 2129 | } |
aoqi@0 | 2130 | // Code pointer |
aoqi@0 | 2131 | code_start = cfs->get_u1_buffer(); |
aoqi@0 | 2132 | assert(code_start != NULL, "null code start"); |
aoqi@0 | 2133 | cfs->guarantee_more(code_length, CHECK_(nullHandle)); |
aoqi@0 | 2134 | cfs->skip_u1_fast(code_length); |
aoqi@0 | 2135 | |
aoqi@0 | 2136 | // Exception handler table |
aoqi@0 | 2137 | cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length |
aoqi@0 | 2138 | exception_table_length = cfs->get_u2_fast(); |
aoqi@0 | 2139 | if (exception_table_length > 0) { |
aoqi@0 | 2140 | exception_table_start = |
aoqi@0 | 2141 | parse_exception_table(code_length, exception_table_length, CHECK_(nullHandle)); |
aoqi@0 | 2142 | } |
aoqi@0 | 2143 | |
aoqi@0 | 2144 | // Parse additional attributes in code attribute |
aoqi@0 | 2145 | cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count |
aoqi@0 | 2146 | u2 code_attributes_count = cfs->get_u2_fast(); |
aoqi@0 | 2147 | |
aoqi@0 | 2148 | unsigned int calculated_attribute_length = 0; |
aoqi@0 | 2149 | |
aoqi@0 | 2150 | if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
aoqi@0 | 2151 | calculated_attribute_length = |
aoqi@0 | 2152 | sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
aoqi@0 | 2153 | } else { |
aoqi@0 | 2154 | // max_stack, locals and length are smaller in pre-version 45.2 classes |
aoqi@0 | 2155 | calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
aoqi@0 | 2156 | } |
aoqi@0 | 2157 | calculated_attribute_length += |
aoqi@0 | 2158 | code_length + |
aoqi@0 | 2159 | sizeof(exception_table_length) + |
aoqi@0 | 2160 | sizeof(code_attributes_count) + |
aoqi@0 | 2161 | exception_table_length * |
aoqi@0 | 2162 | ( sizeof(u2) + // start_pc |
aoqi@0 | 2163 | sizeof(u2) + // end_pc |
aoqi@0 | 2164 | sizeof(u2) + // handler_pc |
aoqi@0 | 2165 | sizeof(u2) ); // catch_type_index |
aoqi@0 | 2166 | |
aoqi@0 | 2167 | while (code_attributes_count--) { |
aoqi@0 | 2168 | cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length |
aoqi@0 | 2169 | u2 code_attribute_name_index = cfs->get_u2_fast(); |
aoqi@0 | 2170 | u4 code_attribute_length = cfs->get_u4_fast(); |
aoqi@0 | 2171 | calculated_attribute_length += code_attribute_length + |
aoqi@0 | 2172 | sizeof(code_attribute_name_index) + |
aoqi@0 | 2173 | sizeof(code_attribute_length); |
aoqi@0 | 2174 | check_property(valid_symbol_at(code_attribute_name_index), |
aoqi@0 | 2175 | "Invalid code attribute name index %u in class file %s", |
aoqi@0 | 2176 | code_attribute_name_index, |
aoqi@0 | 2177 | CHECK_(nullHandle)); |
aoqi@0 | 2178 | if (LoadLineNumberTables && |
aoqi@0 | 2179 | _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { |
aoqi@0 | 2180 | // Parse and compress line number table |
aoqi@0 | 2181 | parse_linenumber_table(code_attribute_length, code_length, |
aoqi@0 | 2182 | &linenumber_table, CHECK_(nullHandle)); |
aoqi@0 | 2183 | |
aoqi@0 | 2184 | } else if (LoadLocalVariableTables && |
aoqi@0 | 2185 | _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { |
aoqi@0 | 2186 | // Parse local variable table |
aoqi@0 | 2187 | if (!lvt_allocated) { |
aoqi@0 | 2188 | localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2189 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2190 | localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2191 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2192 | localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2193 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2194 | localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2195 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2196 | lvt_allocated = true; |
aoqi@0 | 2197 | } |
aoqi@0 | 2198 | if (lvt_cnt == max_lvt_cnt) { |
aoqi@0 | 2199 | max_lvt_cnt <<= 1; |
aoqi@0 | 2200 | localvariable_table_length = REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); |
aoqi@0 | 2201 | localvariable_table_start = REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); |
aoqi@0 | 2202 | } |
aoqi@0 | 2203 | localvariable_table_start[lvt_cnt] = |
aoqi@0 | 2204 | parse_localvariable_table(code_length, |
aoqi@0 | 2205 | max_locals, |
aoqi@0 | 2206 | code_attribute_length, |
aoqi@0 | 2207 | &localvariable_table_length[lvt_cnt], |
aoqi@0 | 2208 | false, // is not LVTT |
aoqi@0 | 2209 | CHECK_(nullHandle)); |
aoqi@0 | 2210 | total_lvt_length += localvariable_table_length[lvt_cnt]; |
aoqi@0 | 2211 | lvt_cnt++; |
aoqi@0 | 2212 | } else if (LoadLocalVariableTypeTables && |
aoqi@0 | 2213 | _major_version >= JAVA_1_5_VERSION && |
aoqi@0 | 2214 | _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { |
aoqi@0 | 2215 | if (!lvt_allocated) { |
aoqi@0 | 2216 | localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2217 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2218 | localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2219 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2220 | localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2221 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2222 | localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2223 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
aoqi@0 | 2224 | lvt_allocated = true; |
aoqi@0 | 2225 | } |
aoqi@0 | 2226 | // Parse local variable type table |
aoqi@0 | 2227 | if (lvtt_cnt == max_lvtt_cnt) { |
aoqi@0 | 2228 | max_lvtt_cnt <<= 1; |
aoqi@0 | 2229 | localvariable_type_table_length = REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); |
aoqi@0 | 2230 | localvariable_type_table_start = REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); |
aoqi@0 | 2231 | } |
aoqi@0 | 2232 | localvariable_type_table_start[lvtt_cnt] = |
aoqi@0 | 2233 | parse_localvariable_table(code_length, |
aoqi@0 | 2234 | max_locals, |
aoqi@0 | 2235 | code_attribute_length, |
aoqi@0 | 2236 | &localvariable_type_table_length[lvtt_cnt], |
aoqi@0 | 2237 | true, // is LVTT |
aoqi@0 | 2238 | CHECK_(nullHandle)); |
aoqi@0 | 2239 | lvtt_cnt++; |
aoqi@0 | 2240 | } else if (_major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && |
aoqi@0 | 2241 | _cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { |
aoqi@0 | 2242 | // Stack map is only needed by the new verifier in JDK1.5. |
aoqi@0 | 2243 | if (parsed_stackmap_attribute) { |
aoqi@0 | 2244 | classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2245 | } |
aoqi@0 | 2246 | stackmap_data = parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2247 | stackmap_data_length = code_attribute_length; |
aoqi@0 | 2248 | parsed_stackmap_attribute = true; |
aoqi@0 | 2249 | } else { |
aoqi@0 | 2250 | // Skip unknown attributes |
aoqi@0 | 2251 | cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2252 | } |
aoqi@0 | 2253 | } |
aoqi@0 | 2254 | // check method attribute length |
aoqi@0 | 2255 | if (_need_verify) { |
aoqi@0 | 2256 | guarantee_property(method_attribute_length == calculated_attribute_length, |
aoqi@0 | 2257 | "Code segment has wrong length in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2258 | } |
aoqi@0 | 2259 | } else if (method_attribute_name == vmSymbols::tag_exceptions()) { |
aoqi@0 | 2260 | // Parse Exceptions attribute |
aoqi@0 | 2261 | if (parsed_checked_exceptions_attribute) { |
aoqi@0 | 2262 | classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2263 | } |
aoqi@0 | 2264 | parsed_checked_exceptions_attribute = true; |
aoqi@0 | 2265 | checked_exceptions_start = |
aoqi@0 | 2266 | parse_checked_exceptions(&checked_exceptions_length, |
aoqi@0 | 2267 | method_attribute_length, |
aoqi@0 | 2268 | CHECK_(nullHandle)); |
aoqi@0 | 2269 | } else if (method_attribute_name == vmSymbols::tag_method_parameters()) { |
aoqi@0 | 2270 | // reject multiple method parameters |
aoqi@0 | 2271 | if (method_parameters_seen) { |
aoqi@0 | 2272 | classfile_parse_error("Multiple MethodParameters attributes in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2273 | } |
aoqi@0 | 2274 | method_parameters_seen = true; |
aoqi@0 | 2275 | method_parameters_length = cfs->get_u1_fast(); |
aoqi@0 | 2276 | if (method_attribute_length != (method_parameters_length * 4u) + 1u) { |
aoqi@0 | 2277 | classfile_parse_error( |
aoqi@0 | 2278 | "Invalid MethodParameters method attribute length %u in class file", |
aoqi@0 | 2279 | method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2280 | } |
aoqi@0 | 2281 | method_parameters_data = cfs->get_u1_buffer(); |
aoqi@0 | 2282 | cfs->skip_u2_fast(method_parameters_length); |
aoqi@0 | 2283 | cfs->skip_u2_fast(method_parameters_length); |
aoqi@0 | 2284 | // ignore this attribute if it cannot be reflected |
aoqi@0 | 2285 | if (!SystemDictionary::Parameter_klass_loaded()) |
aoqi@0 | 2286 | method_parameters_length = 0; |
aoqi@0 | 2287 | } else if (method_attribute_name == vmSymbols::tag_synthetic()) { |
aoqi@0 | 2288 | if (method_attribute_length != 0) { |
aoqi@0 | 2289 | classfile_parse_error( |
aoqi@0 | 2290 | "Invalid Synthetic method attribute length %u in class file %s", |
aoqi@0 | 2291 | method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2292 | } |
aoqi@0 | 2293 | // Should we check that there hasn't already been a synthetic attribute? |
aoqi@0 | 2294 | access_flags.set_is_synthetic(); |
aoqi@0 | 2295 | } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 |
aoqi@0 | 2296 | if (method_attribute_length != 0) { |
aoqi@0 | 2297 | classfile_parse_error( |
aoqi@0 | 2298 | "Invalid Deprecated method attribute length %u in class file %s", |
aoqi@0 | 2299 | method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2300 | } |
aoqi@0 | 2301 | } else if (_major_version >= JAVA_1_5_VERSION) { |
aoqi@0 | 2302 | if (method_attribute_name == vmSymbols::tag_signature()) { |
aoqi@0 | 2303 | if (method_attribute_length != 2) { |
aoqi@0 | 2304 | classfile_parse_error( |
aoqi@0 | 2305 | "Invalid Signature attribute length %u in class file %s", |
aoqi@0 | 2306 | method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2307 | } |
aoqi@0 | 2308 | generic_signature_index = parse_generic_signature_attribute(CHECK_(nullHandle)); |
aoqi@0 | 2309 | } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { |
aoqi@0 | 2310 | runtime_visible_annotations_length = method_attribute_length; |
aoqi@0 | 2311 | runtime_visible_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2312 | assert(runtime_visible_annotations != NULL, "null visible annotations"); |
aoqi@0 | 2313 | parse_annotations(runtime_visible_annotations, |
aoqi@0 | 2314 | runtime_visible_annotations_length, &parsed_annotations, |
aoqi@0 | 2315 | CHECK_(nullHandle)); |
aoqi@0 | 2316 | cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
aoqi@0 | 2317 | } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { |
aoqi@0 | 2318 | runtime_invisible_annotations_length = method_attribute_length; |
aoqi@0 | 2319 | runtime_invisible_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2320 | assert(runtime_invisible_annotations != NULL, "null invisible annotations"); |
aoqi@0 | 2321 | cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); |
aoqi@0 | 2322 | } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { |
aoqi@0 | 2323 | runtime_visible_parameter_annotations_length = method_attribute_length; |
aoqi@0 | 2324 | runtime_visible_parameter_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2325 | assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); |
aoqi@0 | 2326 | cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); |
aoqi@0 | 2327 | } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { |
aoqi@0 | 2328 | runtime_invisible_parameter_annotations_length = method_attribute_length; |
aoqi@0 | 2329 | runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2330 | assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); |
aoqi@0 | 2331 | cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); |
aoqi@0 | 2332 | } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { |
aoqi@0 | 2333 | annotation_default_length = method_attribute_length; |
aoqi@0 | 2334 | annotation_default = cfs->get_u1_buffer(); |
aoqi@0 | 2335 | assert(annotation_default != NULL, "null annotation default"); |
aoqi@0 | 2336 | cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); |
aoqi@0 | 2337 | } else if (method_attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
aoqi@0 | 2338 | if (runtime_visible_type_annotations != NULL) { |
aoqi@0 | 2339 | classfile_parse_error( |
aoqi@0 | 2340 | "Multiple RuntimeVisibleTypeAnnotations attributes for method in class file %s", |
aoqi@0 | 2341 | CHECK_(nullHandle)); |
aoqi@0 | 2342 | } |
aoqi@0 | 2343 | runtime_visible_type_annotations_length = method_attribute_length; |
aoqi@0 | 2344 | runtime_visible_type_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2345 | assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
aoqi@0 | 2346 | // No need for the VM to parse Type annotations |
aoqi@0 | 2347 | cfs->skip_u1(runtime_visible_type_annotations_length, CHECK_(nullHandle)); |
aoqi@0 | 2348 | } else if (method_attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
aoqi@0 | 2349 | if (runtime_invisible_type_annotations_exists) { |
aoqi@0 | 2350 | classfile_parse_error( |
aoqi@0 | 2351 | "Multiple RuntimeInvisibleTypeAnnotations attributes for method in class file %s", |
aoqi@0 | 2352 | CHECK_(nullHandle)); |
aoqi@0 | 2353 | } else { |
aoqi@0 | 2354 | runtime_invisible_type_annotations_exists = true; |
aoqi@0 | 2355 | } |
aoqi@0 | 2356 | if (PreserveAllAnnotations) { |
aoqi@0 | 2357 | runtime_invisible_type_annotations_length = method_attribute_length; |
aoqi@0 | 2358 | runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2359 | assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
aoqi@0 | 2360 | } |
aoqi@0 | 2361 | cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2362 | } else { |
aoqi@0 | 2363 | // Skip unknown attributes |
aoqi@0 | 2364 | cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2365 | } |
aoqi@0 | 2366 | } else { |
aoqi@0 | 2367 | // Skip unknown attributes |
aoqi@0 | 2368 | cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); |
aoqi@0 | 2369 | } |
aoqi@0 | 2370 | } |
aoqi@0 | 2371 | |
aoqi@0 | 2372 | if (linenumber_table != NULL) { |
aoqi@0 | 2373 | linenumber_table->write_terminator(); |
aoqi@0 | 2374 | linenumber_table_length = linenumber_table->position(); |
aoqi@0 | 2375 | } |
aoqi@0 | 2376 | |
aoqi@0 | 2377 | // Make sure there's at least one Code attribute in non-native/non-abstract method |
aoqi@0 | 2378 | if (_need_verify) { |
aoqi@0 | 2379 | guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, |
aoqi@0 | 2380 | "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); |
aoqi@0 | 2381 | } |
aoqi@0 | 2382 | |
aoqi@0 | 2383 | // All sizing information for a Method* is finally available, now create it |
aoqi@0 | 2384 | InlineTableSizes sizes( |
aoqi@0 | 2385 | total_lvt_length, |
aoqi@0 | 2386 | linenumber_table_length, |
aoqi@0 | 2387 | exception_table_length, |
aoqi@0 | 2388 | checked_exceptions_length, |
aoqi@0 | 2389 | method_parameters_length, |
aoqi@0 | 2390 | generic_signature_index, |
aoqi@0 | 2391 | runtime_visible_annotations_length + |
aoqi@0 | 2392 | runtime_invisible_annotations_length, |
aoqi@0 | 2393 | runtime_visible_parameter_annotations_length + |
aoqi@0 | 2394 | runtime_invisible_parameter_annotations_length, |
aoqi@0 | 2395 | runtime_visible_type_annotations_length + |
aoqi@0 | 2396 | runtime_invisible_type_annotations_length, |
aoqi@0 | 2397 | annotation_default_length, |
aoqi@0 | 2398 | 0); |
aoqi@0 | 2399 | |
aoqi@0 | 2400 | Method* m = Method::allocate( |
aoqi@0 | 2401 | _loader_data, code_length, access_flags, &sizes, |
aoqi@0 | 2402 | ConstMethod::NORMAL, CHECK_(nullHandle)); |
aoqi@0 | 2403 | |
aoqi@0 | 2404 | ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
aoqi@0 | 2405 | |
aoqi@0 | 2406 | // Fill in information from fixed part (access_flags already set) |
aoqi@0 | 2407 | m->set_constants(_cp); |
aoqi@0 | 2408 | m->set_name_index(name_index); |
aoqi@0 | 2409 | m->set_signature_index(signature_index); |
aoqi@0 | 2410 | #ifdef CC_INTERP |
aoqi@0 | 2411 | // hmm is there a gc issue here?? |
aoqi@0 | 2412 | ResultTypeFinder rtf(_cp->symbol_at(signature_index)); |
aoqi@0 | 2413 | m->set_result_index(rtf.type()); |
aoqi@0 | 2414 | #endif |
aoqi@0 | 2415 | |
aoqi@0 | 2416 | if (args_size >= 0) { |
aoqi@0 | 2417 | m->set_size_of_parameters(args_size); |
aoqi@0 | 2418 | } else { |
aoqi@0 | 2419 | m->compute_size_of_parameters(THREAD); |
aoqi@0 | 2420 | } |
aoqi@0 | 2421 | #ifdef ASSERT |
aoqi@0 | 2422 | if (args_size >= 0) { |
aoqi@0 | 2423 | m->compute_size_of_parameters(THREAD); |
aoqi@0 | 2424 | assert(args_size == m->size_of_parameters(), ""); |
aoqi@0 | 2425 | } |
aoqi@0 | 2426 | #endif |
aoqi@0 | 2427 | |
aoqi@0 | 2428 | // Fill in code attribute information |
aoqi@0 | 2429 | m->set_max_stack(max_stack); |
aoqi@0 | 2430 | m->set_max_locals(max_locals); |
aoqi@0 | 2431 | if (stackmap_data != NULL) { |
aoqi@0 | 2432 | m->constMethod()->copy_stackmap_data(_loader_data, stackmap_data, |
aoqi@0 | 2433 | stackmap_data_length, CHECK_NULL); |
aoqi@0 | 2434 | } |
aoqi@0 | 2435 | |
aoqi@0 | 2436 | // Copy byte codes |
aoqi@0 | 2437 | m->set_code(code_start); |
aoqi@0 | 2438 | |
aoqi@0 | 2439 | // Copy line number table |
aoqi@0 | 2440 | if (linenumber_table != NULL) { |
aoqi@0 | 2441 | memcpy(m->compressed_linenumber_table(), |
aoqi@0 | 2442 | linenumber_table->buffer(), linenumber_table_length); |
aoqi@0 | 2443 | } |
aoqi@0 | 2444 | |
aoqi@0 | 2445 | // Copy exception table |
aoqi@0 | 2446 | if (exception_table_length > 0) { |
aoqi@0 | 2447 | int size = |
aoqi@0 | 2448 | exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
aoqi@0 | 2449 | copy_u2_with_conversion((u2*) m->exception_table_start(), |
aoqi@0 | 2450 | exception_table_start, size); |
aoqi@0 | 2451 | } |
aoqi@0 | 2452 | |
aoqi@0 | 2453 | // Copy method parameters |
aoqi@0 | 2454 | if (method_parameters_length > 0) { |
aoqi@0 | 2455 | MethodParametersElement* elem = m->constMethod()->method_parameters_start(); |
aoqi@0 | 2456 | for (int i = 0; i < method_parameters_length; i++) { |
aoqi@0 | 2457 | elem[i].name_cp_index = Bytes::get_Java_u2(method_parameters_data); |
aoqi@0 | 2458 | method_parameters_data += 2; |
aoqi@0 | 2459 | elem[i].flags = Bytes::get_Java_u2(method_parameters_data); |
aoqi@0 | 2460 | method_parameters_data += 2; |
aoqi@0 | 2461 | } |
aoqi@0 | 2462 | } |
aoqi@0 | 2463 | |
aoqi@0 | 2464 | // Copy checked exceptions |
aoqi@0 | 2465 | if (checked_exceptions_length > 0) { |
aoqi@0 | 2466 | int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); |
aoqi@0 | 2467 | copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); |
aoqi@0 | 2468 | } |
aoqi@0 | 2469 | |
aoqi@0 | 2470 | // Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
aoqi@0 | 2471 | if (total_lvt_length > 0) { |
aoqi@0 | 2472 | promoted_flags->set_has_localvariable_table(); |
aoqi@0 | 2473 | copy_localvariable_table(m->constMethod(), lvt_cnt, |
aoqi@0 | 2474 | localvariable_table_length, |
aoqi@0 | 2475 | localvariable_table_start, |
aoqi@0 | 2476 | lvtt_cnt, |
aoqi@0 | 2477 | localvariable_type_table_length, |
aoqi@0 | 2478 | localvariable_type_table_start, CHECK_NULL); |
aoqi@0 | 2479 | } |
aoqi@0 | 2480 | |
aoqi@0 | 2481 | if (parsed_annotations.has_any_annotations()) |
aoqi@0 | 2482 | parsed_annotations.apply_to(m); |
aoqi@0 | 2483 | |
aoqi@0 | 2484 | // Copy annotations |
aoqi@0 | 2485 | copy_method_annotations(m->constMethod(), |
aoqi@0 | 2486 | runtime_visible_annotations, |
aoqi@0 | 2487 | runtime_visible_annotations_length, |
aoqi@0 | 2488 | runtime_invisible_annotations, |
aoqi@0 | 2489 | runtime_invisible_annotations_length, |
aoqi@0 | 2490 | runtime_visible_parameter_annotations, |
aoqi@0 | 2491 | runtime_visible_parameter_annotations_length, |
aoqi@0 | 2492 | runtime_invisible_parameter_annotations, |
aoqi@0 | 2493 | runtime_invisible_parameter_annotations_length, |
aoqi@0 | 2494 | runtime_visible_type_annotations, |
aoqi@0 | 2495 | runtime_visible_type_annotations_length, |
aoqi@0 | 2496 | runtime_invisible_type_annotations, |
aoqi@0 | 2497 | runtime_invisible_type_annotations_length, |
aoqi@0 | 2498 | annotation_default, |
aoqi@0 | 2499 | annotation_default_length, |
aoqi@0 | 2500 | CHECK_NULL); |
aoqi@0 | 2501 | |
aoqi@0 | 2502 | if (name == vmSymbols::finalize_method_name() && |
aoqi@0 | 2503 | signature == vmSymbols::void_method_signature()) { |
aoqi@0 | 2504 | if (m->is_empty_method()) { |
aoqi@0 | 2505 | _has_empty_finalizer = true; |
aoqi@0 | 2506 | } else { |
aoqi@0 | 2507 | _has_finalizer = true; |
aoqi@0 | 2508 | } |
aoqi@0 | 2509 | } |
aoqi@0 | 2510 | if (name == vmSymbols::object_initializer_name() && |
aoqi@0 | 2511 | signature == vmSymbols::void_method_signature() && |
aoqi@0 | 2512 | m->is_vanilla_constructor()) { |
aoqi@0 | 2513 | _has_vanilla_constructor = true; |
aoqi@0 | 2514 | } |
aoqi@0 | 2515 | |
aoqi@0 | 2516 | NOT_PRODUCT(m->verify()); |
aoqi@0 | 2517 | return m; |
aoqi@0 | 2518 | } |
aoqi@0 | 2519 | |
aoqi@0 | 2520 | |
aoqi@0 | 2521 | // The promoted_flags parameter is used to pass relevant access_flags |
aoqi@0 | 2522 | // from the methods back up to the containing klass. These flag values |
aoqi@0 | 2523 | // are added to klass's access_flags. |
aoqi@0 | 2524 | |
aoqi@0 | 2525 | Array<Method*>* ClassFileParser::parse_methods(bool is_interface, |
aoqi@0 | 2526 | AccessFlags* promoted_flags, |
aoqi@0 | 2527 | bool* has_final_method, |
aoqi@0 | 2528 | bool* has_default_methods, |
aoqi@0 | 2529 | TRAPS) { |
aoqi@0 | 2530 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2531 | cfs->guarantee_more(2, CHECK_NULL); // length |
aoqi@0 | 2532 | u2 length = cfs->get_u2_fast(); |
aoqi@0 | 2533 | if (length == 0) { |
aoqi@0 | 2534 | _methods = Universe::the_empty_method_array(); |
aoqi@0 | 2535 | } else { |
aoqi@0 | 2536 | _methods = MetadataFactory::new_array<Method*>(_loader_data, length, NULL, CHECK_NULL); |
aoqi@0 | 2537 | |
aoqi@0 | 2538 | HandleMark hm(THREAD); |
aoqi@0 | 2539 | for (int index = 0; index < length; index++) { |
aoqi@0 | 2540 | methodHandle method = parse_method(is_interface, |
aoqi@0 | 2541 | promoted_flags, |
aoqi@0 | 2542 | CHECK_NULL); |
aoqi@0 | 2543 | |
aoqi@0 | 2544 | if (method->is_final()) { |
aoqi@0 | 2545 | *has_final_method = true; |
aoqi@0 | 2546 | } |
aoqi@0 | 2547 | if (is_interface && !(*has_default_methods) |
aoqi@0 | 2548 | && !method->is_abstract() && !method->is_static() |
aoqi@0 | 2549 | && !method->is_private()) { |
aoqi@0 | 2550 | // default method |
aoqi@0 | 2551 | *has_default_methods = true; |
aoqi@0 | 2552 | } |
aoqi@0 | 2553 | _methods->at_put(index, method()); |
aoqi@0 | 2554 | } |
aoqi@0 | 2555 | |
aoqi@0 | 2556 | if (_need_verify && length > 1) { |
aoqi@0 | 2557 | // Check duplicated methods |
aoqi@0 | 2558 | ResourceMark rm(THREAD); |
aoqi@0 | 2559 | NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 2560 | THREAD, NameSigHash*, HASH_ROW_SIZE); |
aoqi@0 | 2561 | initialize_hashtable(names_and_sigs); |
aoqi@0 | 2562 | bool dup = false; |
aoqi@0 | 2563 | { |
aoqi@0 | 2564 | debug_only(No_Safepoint_Verifier nsv;) |
aoqi@0 | 2565 | for (int i = 0; i < length; i++) { |
aoqi@0 | 2566 | Method* m = _methods->at(i); |
aoqi@0 | 2567 | // If no duplicates, add name/signature in hashtable names_and_sigs. |
aoqi@0 | 2568 | if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { |
aoqi@0 | 2569 | dup = true; |
aoqi@0 | 2570 | break; |
aoqi@0 | 2571 | } |
aoqi@0 | 2572 | } |
aoqi@0 | 2573 | } |
aoqi@0 | 2574 | if (dup) { |
aoqi@0 | 2575 | classfile_parse_error("Duplicate method name&signature in class file %s", |
aoqi@0 | 2576 | CHECK_NULL); |
aoqi@0 | 2577 | } |
aoqi@0 | 2578 | } |
aoqi@0 | 2579 | } |
aoqi@0 | 2580 | return _methods; |
aoqi@0 | 2581 | } |
aoqi@0 | 2582 | |
aoqi@0 | 2583 | |
aoqi@0 | 2584 | intArray* ClassFileParser::sort_methods(Array<Method*>* methods) { |
aoqi@0 | 2585 | int length = methods->length(); |
aoqi@0 | 2586 | // If JVMTI original method ordering or sharing is enabled we have to |
aoqi@0 | 2587 | // remember the original class file ordering. |
aoqi@0 | 2588 | // We temporarily use the vtable_index field in the Method* to store the |
aoqi@0 | 2589 | // class file index, so we can read in after calling qsort. |
aoqi@0 | 2590 | // Put the method ordering in the shared archive. |
aoqi@0 | 2591 | if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
aoqi@0 | 2592 | for (int index = 0; index < length; index++) { |
aoqi@0 | 2593 | Method* m = methods->at(index); |
aoqi@0 | 2594 | assert(!m->valid_vtable_index(), "vtable index should not be set"); |
aoqi@0 | 2595 | m->set_vtable_index(index); |
aoqi@0 | 2596 | } |
aoqi@0 | 2597 | } |
aoqi@0 | 2598 | // Sort method array by ascending method name (for faster lookups & vtable construction) |
aoqi@0 | 2599 | // Note that the ordering is not alphabetical, see Symbol::fast_compare |
aoqi@0 | 2600 | Method::sort_methods(methods); |
aoqi@0 | 2601 | |
aoqi@0 | 2602 | intArray* method_ordering = NULL; |
aoqi@0 | 2603 | // If JVMTI original method ordering or sharing is enabled construct int |
aoqi@0 | 2604 | // array remembering the original ordering |
aoqi@0 | 2605 | if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
aoqi@0 | 2606 | method_ordering = new intArray(length); |
aoqi@0 | 2607 | for (int index = 0; index < length; index++) { |
aoqi@0 | 2608 | Method* m = methods->at(index); |
aoqi@0 | 2609 | int old_index = m->vtable_index(); |
aoqi@0 | 2610 | assert(old_index >= 0 && old_index < length, "invalid method index"); |
aoqi@0 | 2611 | method_ordering->at_put(index, old_index); |
aoqi@0 | 2612 | m->set_vtable_index(Method::invalid_vtable_index); |
aoqi@0 | 2613 | } |
aoqi@0 | 2614 | } |
aoqi@0 | 2615 | return method_ordering; |
aoqi@0 | 2616 | } |
aoqi@0 | 2617 | |
aoqi@0 | 2618 | // Parse generic_signature attribute for methods and fields |
aoqi@0 | 2619 | u2 ClassFileParser::parse_generic_signature_attribute(TRAPS) { |
aoqi@0 | 2620 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2621 | cfs->guarantee_more(2, CHECK_0); // generic_signature_index |
aoqi@0 | 2622 | u2 generic_signature_index = cfs->get_u2_fast(); |
aoqi@0 | 2623 | check_property( |
aoqi@0 | 2624 | valid_symbol_at(generic_signature_index), |
aoqi@0 | 2625 | "Invalid Signature attribute at constant pool index %u in class file %s", |
aoqi@0 | 2626 | generic_signature_index, CHECK_0); |
aoqi@0 | 2627 | return generic_signature_index; |
aoqi@0 | 2628 | } |
aoqi@0 | 2629 | |
aoqi@0 | 2630 | void ClassFileParser::parse_classfile_sourcefile_attribute(TRAPS) { |
aoqi@0 | 2631 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2632 | cfs->guarantee_more(2, CHECK); // sourcefile_index |
aoqi@0 | 2633 | u2 sourcefile_index = cfs->get_u2_fast(); |
aoqi@0 | 2634 | check_property( |
aoqi@0 | 2635 | valid_symbol_at(sourcefile_index), |
aoqi@0 | 2636 | "Invalid SourceFile attribute at constant pool index %u in class file %s", |
aoqi@0 | 2637 | sourcefile_index, CHECK); |
aoqi@0 | 2638 | set_class_sourcefile_index(sourcefile_index); |
aoqi@0 | 2639 | } |
aoqi@0 | 2640 | |
aoqi@0 | 2641 | |
aoqi@0 | 2642 | |
aoqi@0 | 2643 | void ClassFileParser::parse_classfile_source_debug_extension_attribute(int length, TRAPS) { |
aoqi@0 | 2644 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2645 | u1* sde_buffer = cfs->get_u1_buffer(); |
aoqi@0 | 2646 | assert(sde_buffer != NULL, "null sde buffer"); |
aoqi@0 | 2647 | |
aoqi@0 | 2648 | // Don't bother storing it if there is no way to retrieve it |
aoqi@0 | 2649 | if (JvmtiExport::can_get_source_debug_extension()) { |
aoqi@0 | 2650 | assert((length+1) > length, "Overflow checking"); |
aoqi@0 | 2651 | u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); |
aoqi@0 | 2652 | for (int i = 0; i < length; i++) { |
aoqi@0 | 2653 | sde[i] = sde_buffer[i]; |
aoqi@0 | 2654 | } |
aoqi@0 | 2655 | sde[length] = '\0'; |
aoqi@0 | 2656 | set_class_sde_buffer((char*)sde, length); |
aoqi@0 | 2657 | } |
aoqi@0 | 2658 | // Got utf8 string, set stream position forward |
aoqi@0 | 2659 | cfs->skip_u1(length, CHECK); |
aoqi@0 | 2660 | } |
aoqi@0 | 2661 | |
aoqi@0 | 2662 | |
aoqi@0 | 2663 | // Inner classes can be static, private or protected (classic VM does this) |
aoqi@0 | 2664 | #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) |
aoqi@0 | 2665 | |
aoqi@0 | 2666 | // Return number of classes in the inner classes attribute table |
aoqi@0 | 2667 | u2 ClassFileParser::parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
aoqi@0 | 2668 | bool parsed_enclosingmethod_attribute, |
aoqi@0 | 2669 | u2 enclosing_method_class_index, |
aoqi@0 | 2670 | u2 enclosing_method_method_index, |
aoqi@0 | 2671 | TRAPS) { |
aoqi@0 | 2672 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2673 | u1* current_mark = cfs->current(); |
aoqi@0 | 2674 | u2 length = 0; |
aoqi@0 | 2675 | if (inner_classes_attribute_start != NULL) { |
aoqi@0 | 2676 | cfs->set_current(inner_classes_attribute_start); |
aoqi@0 | 2677 | cfs->guarantee_more(2, CHECK_0); // length |
aoqi@0 | 2678 | length = cfs->get_u2_fast(); |
aoqi@0 | 2679 | } |
aoqi@0 | 2680 | |
aoqi@0 | 2681 | // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
aoqi@0 | 2682 | // method data: |
aoqi@0 | 2683 | // [inner_class_info_index, |
aoqi@0 | 2684 | // outer_class_info_index, |
aoqi@0 | 2685 | // inner_name_index, |
aoqi@0 | 2686 | // inner_class_access_flags, |
aoqi@0 | 2687 | // ... |
aoqi@0 | 2688 | // enclosing_method_class_index, |
aoqi@0 | 2689 | // enclosing_method_method_index] |
aoqi@0 | 2690 | int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
aoqi@0 | 2691 | Array<u2>* inner_classes = MetadataFactory::new_array<u2>(_loader_data, size, CHECK_0); |
aoqi@0 | 2692 | _inner_classes = inner_classes; |
aoqi@0 | 2693 | |
aoqi@0 | 2694 | int index = 0; |
aoqi@0 | 2695 | int cp_size = _cp->length(); |
aoqi@0 | 2696 | cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 |
aoqi@0 | 2697 | for (int n = 0; n < length; n++) { |
aoqi@0 | 2698 | // Inner class index |
aoqi@0 | 2699 | u2 inner_class_info_index = cfs->get_u2_fast(); |
aoqi@0 | 2700 | check_property( |
aoqi@0 | 2701 | inner_class_info_index == 0 || |
aoqi@0 | 2702 | valid_klass_reference_at(inner_class_info_index), |
aoqi@0 | 2703 | "inner_class_info_index %u has bad constant type in class file %s", |
aoqi@0 | 2704 | inner_class_info_index, CHECK_0); |
aoqi@0 | 2705 | // Outer class index |
aoqi@0 | 2706 | u2 outer_class_info_index = cfs->get_u2_fast(); |
aoqi@0 | 2707 | check_property( |
aoqi@0 | 2708 | outer_class_info_index == 0 || |
aoqi@0 | 2709 | valid_klass_reference_at(outer_class_info_index), |
aoqi@0 | 2710 | "outer_class_info_index %u has bad constant type in class file %s", |
aoqi@0 | 2711 | outer_class_info_index, CHECK_0); |
aoqi@0 | 2712 | // Inner class name |
aoqi@0 | 2713 | u2 inner_name_index = cfs->get_u2_fast(); |
aoqi@0 | 2714 | check_property( |
aoqi@0 | 2715 | inner_name_index == 0 || valid_symbol_at(inner_name_index), |
aoqi@0 | 2716 | "inner_name_index %u has bad constant type in class file %s", |
aoqi@0 | 2717 | inner_name_index, CHECK_0); |
aoqi@0 | 2718 | if (_need_verify) { |
aoqi@0 | 2719 | guarantee_property(inner_class_info_index != outer_class_info_index, |
aoqi@0 | 2720 | "Class is both outer and inner class in class file %s", CHECK_0); |
aoqi@0 | 2721 | } |
aoqi@0 | 2722 | // Access flags |
aoqi@0 | 2723 | AccessFlags inner_access_flags; |
aoqi@0 | 2724 | jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; |
aoqi@0 | 2725 | if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { |
aoqi@0 | 2726 | // Set abstract bit for old class files for backward compatibility |
aoqi@0 | 2727 | flags |= JVM_ACC_ABSTRACT; |
aoqi@0 | 2728 | } |
aoqi@0 | 2729 | verify_legal_class_modifiers(flags, CHECK_0); |
aoqi@0 | 2730 | inner_access_flags.set_flags(flags); |
aoqi@0 | 2731 | |
aoqi@0 | 2732 | inner_classes->at_put(index++, inner_class_info_index); |
aoqi@0 | 2733 | inner_classes->at_put(index++, outer_class_info_index); |
aoqi@0 | 2734 | inner_classes->at_put(index++, inner_name_index); |
aoqi@0 | 2735 | inner_classes->at_put(index++, inner_access_flags.as_short()); |
aoqi@0 | 2736 | } |
aoqi@0 | 2737 | |
aoqi@0 | 2738 | // 4347400: make sure there's no duplicate entry in the classes array |
aoqi@0 | 2739 | if (_need_verify && _major_version >= JAVA_1_5_VERSION) { |
aoqi@0 | 2740 | for(int i = 0; i < length * 4; i += 4) { |
aoqi@0 | 2741 | for(int j = i + 4; j < length * 4; j += 4) { |
aoqi@0 | 2742 | guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
aoqi@0 | 2743 | inner_classes->at(i+1) != inner_classes->at(j+1) || |
aoqi@0 | 2744 | inner_classes->at(i+2) != inner_classes->at(j+2) || |
aoqi@0 | 2745 | inner_classes->at(i+3) != inner_classes->at(j+3)), |
aoqi@0 | 2746 | "Duplicate entry in InnerClasses in class file %s", |
aoqi@0 | 2747 | CHECK_0); |
aoqi@0 | 2748 | } |
aoqi@0 | 2749 | } |
aoqi@0 | 2750 | } |
aoqi@0 | 2751 | |
aoqi@0 | 2752 | // Set EnclosingMethod class and method indexes. |
aoqi@0 | 2753 | if (parsed_enclosingmethod_attribute) { |
aoqi@0 | 2754 | inner_classes->at_put(index++, enclosing_method_class_index); |
aoqi@0 | 2755 | inner_classes->at_put(index++, enclosing_method_method_index); |
aoqi@0 | 2756 | } |
aoqi@0 | 2757 | assert(index == size, "wrong size"); |
aoqi@0 | 2758 | |
aoqi@0 | 2759 | // Restore buffer's current position. |
aoqi@0 | 2760 | cfs->set_current(current_mark); |
aoqi@0 | 2761 | |
aoqi@0 | 2762 | return length; |
aoqi@0 | 2763 | } |
aoqi@0 | 2764 | |
aoqi@0 | 2765 | void ClassFileParser::parse_classfile_synthetic_attribute(TRAPS) { |
aoqi@0 | 2766 | set_class_synthetic_flag(true); |
aoqi@0 | 2767 | } |
aoqi@0 | 2768 | |
aoqi@0 | 2769 | void ClassFileParser::parse_classfile_signature_attribute(TRAPS) { |
aoqi@0 | 2770 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2771 | u2 signature_index = cfs->get_u2(CHECK); |
aoqi@0 | 2772 | check_property( |
aoqi@0 | 2773 | valid_symbol_at(signature_index), |
aoqi@0 | 2774 | "Invalid constant pool index %u in Signature attribute in class file %s", |
aoqi@0 | 2775 | signature_index, CHECK); |
aoqi@0 | 2776 | set_class_generic_signature_index(signature_index); |
aoqi@0 | 2777 | } |
aoqi@0 | 2778 | |
aoqi@0 | 2779 | void ClassFileParser::parse_classfile_bootstrap_methods_attribute(u4 attribute_byte_length, TRAPS) { |
aoqi@0 | 2780 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2781 | u1* current_start = cfs->current(); |
aoqi@0 | 2782 | |
aoqi@0 | 2783 | cfs->guarantee_more(attribute_byte_length, CHECK); |
aoqi@0 | 2784 | |
aoqi@0 | 2785 | int attribute_array_length = cfs->get_u2_fast(); |
aoqi@0 | 2786 | |
aoqi@0 | 2787 | guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
aoqi@0 | 2788 | "Short length on BootstrapMethods in class file %s", |
aoqi@0 | 2789 | CHECK); |
aoqi@0 | 2790 | |
aoqi@0 | 2791 | guarantee_property(attribute_byte_length >= sizeof(u2), |
aoqi@0 | 2792 | "Invalid BootstrapMethods attribute length %u in class file %s", |
aoqi@0 | 2793 | attribute_byte_length, |
aoqi@0 | 2794 | CHECK); |
aoqi@0 | 2795 | |
aoqi@0 | 2796 | // The attribute contains a counted array of counted tuples of shorts, |
aoqi@0 | 2797 | // represending bootstrap specifiers: |
aoqi@0 | 2798 | // length*{bootstrap_method_index, argument_count*{argument_index}} |
aoqi@0 | 2799 | int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
aoqi@0 | 2800 | // operand_count = number of shorts in attr, except for leading length |
aoqi@0 | 2801 | |
aoqi@0 | 2802 | // The attribute is copied into a short[] array. |
aoqi@0 | 2803 | // The array begins with a series of short[2] pairs, one for each tuple. |
aoqi@0 | 2804 | int index_size = (attribute_array_length * 2); |
aoqi@0 | 2805 | |
aoqi@0 | 2806 | Array<u2>* operands = MetadataFactory::new_array<u2>(_loader_data, index_size + operand_count, CHECK); |
aoqi@0 | 2807 | |
aoqi@0 | 2808 | // Eagerly assign operands so they will be deallocated with the constant |
aoqi@0 | 2809 | // pool if there is an error. |
aoqi@0 | 2810 | _cp->set_operands(operands); |
aoqi@0 | 2811 | |
aoqi@0 | 2812 | int operand_fill_index = index_size; |
aoqi@0 | 2813 | int cp_size = _cp->length(); |
aoqi@0 | 2814 | |
aoqi@0 | 2815 | for (int n = 0; n < attribute_array_length; n++) { |
aoqi@0 | 2816 | // Store a 32-bit offset into the header of the operand array. |
aoqi@0 | 2817 | ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
aoqi@0 | 2818 | |
aoqi@0 | 2819 | // Read a bootstrap specifier. |
aoqi@0 | 2820 | cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
aoqi@0 | 2821 | u2 bootstrap_method_index = cfs->get_u2_fast(); |
aoqi@0 | 2822 | u2 argument_count = cfs->get_u2_fast(); |
aoqi@0 | 2823 | check_property( |
aoqi@0 | 2824 | valid_cp_range(bootstrap_method_index, cp_size) && |
aoqi@0 | 2825 | _cp->tag_at(bootstrap_method_index).is_method_handle(), |
aoqi@0 | 2826 | "bootstrap_method_index %u has bad constant type in class file %s", |
aoqi@0 | 2827 | bootstrap_method_index, |
aoqi@0 | 2828 | CHECK); |
aoqi@0 | 2829 | |
aoqi@0 | 2830 | guarantee_property((operand_fill_index + 1 + argument_count) < operands->length(), |
aoqi@0 | 2831 | "Invalid BootstrapMethods num_bootstrap_methods or num_bootstrap_arguments value in class file %s", |
aoqi@0 | 2832 | CHECK); |
aoqi@0 | 2833 | |
aoqi@0 | 2834 | operands->at_put(operand_fill_index++, bootstrap_method_index); |
aoqi@0 | 2835 | operands->at_put(operand_fill_index++, argument_count); |
aoqi@0 | 2836 | |
aoqi@0 | 2837 | cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
aoqi@0 | 2838 | for (int j = 0; j < argument_count; j++) { |
aoqi@0 | 2839 | u2 argument_index = cfs->get_u2_fast(); |
aoqi@0 | 2840 | check_property( |
aoqi@0 | 2841 | valid_cp_range(argument_index, cp_size) && |
aoqi@0 | 2842 | _cp->tag_at(argument_index).is_loadable_constant(), |
aoqi@0 | 2843 | "argument_index %u has bad constant type in class file %s", |
aoqi@0 | 2844 | argument_index, |
aoqi@0 | 2845 | CHECK); |
aoqi@0 | 2846 | operands->at_put(operand_fill_index++, argument_index); |
aoqi@0 | 2847 | } |
aoqi@0 | 2848 | } |
aoqi@0 | 2849 | |
aoqi@0 | 2850 | assert(operand_fill_index == operands->length(), "exact fill"); |
aoqi@0 | 2851 | |
aoqi@0 | 2852 | u1* current_end = cfs->current(); |
aoqi@0 | 2853 | guarantee_property(current_end == current_start + attribute_byte_length, |
aoqi@0 | 2854 | "Bad length on BootstrapMethods in class file %s", |
aoqi@0 | 2855 | CHECK); |
aoqi@0 | 2856 | } |
aoqi@0 | 2857 | |
aoqi@0 | 2858 | void ClassFileParser::parse_classfile_attributes(ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
aoqi@0 | 2859 | TRAPS) { |
aoqi@0 | 2860 | ClassFileStream* cfs = stream(); |
aoqi@0 | 2861 | // Set inner classes attribute to default sentinel |
aoqi@0 | 2862 | _inner_classes = Universe::the_empty_short_array(); |
aoqi@0 | 2863 | cfs->guarantee_more(2, CHECK); // attributes_count |
aoqi@0 | 2864 | u2 attributes_count = cfs->get_u2_fast(); |
aoqi@0 | 2865 | bool parsed_sourcefile_attribute = false; |
aoqi@0 | 2866 | bool parsed_innerclasses_attribute = false; |
aoqi@0 | 2867 | bool parsed_enclosingmethod_attribute = false; |
aoqi@0 | 2868 | bool parsed_bootstrap_methods_attribute = false; |
aoqi@0 | 2869 | u1* runtime_visible_annotations = NULL; |
aoqi@0 | 2870 | int runtime_visible_annotations_length = 0; |
aoqi@0 | 2871 | u1* runtime_invisible_annotations = NULL; |
aoqi@0 | 2872 | int runtime_invisible_annotations_length = 0; |
aoqi@0 | 2873 | u1* runtime_visible_type_annotations = NULL; |
aoqi@0 | 2874 | int runtime_visible_type_annotations_length = 0; |
aoqi@0 | 2875 | u1* runtime_invisible_type_annotations = NULL; |
aoqi@0 | 2876 | int runtime_invisible_type_annotations_length = 0; |
aoqi@0 | 2877 | bool runtime_invisible_type_annotations_exists = false; |
aoqi@0 | 2878 | u1* inner_classes_attribute_start = NULL; |
aoqi@0 | 2879 | u4 inner_classes_attribute_length = 0; |
aoqi@0 | 2880 | u2 enclosing_method_class_index = 0; |
aoqi@0 | 2881 | u2 enclosing_method_method_index = 0; |
aoqi@0 | 2882 | // Iterate over attributes |
aoqi@0 | 2883 | while (attributes_count--) { |
aoqi@0 | 2884 | cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length |
aoqi@0 | 2885 | u2 attribute_name_index = cfs->get_u2_fast(); |
aoqi@0 | 2886 | u4 attribute_length = cfs->get_u4_fast(); |
aoqi@0 | 2887 | check_property( |
aoqi@0 | 2888 | valid_symbol_at(attribute_name_index), |
aoqi@0 | 2889 | "Attribute name has bad constant pool index %u in class file %s", |
aoqi@0 | 2890 | attribute_name_index, CHECK); |
aoqi@0 | 2891 | Symbol* tag = _cp->symbol_at(attribute_name_index); |
aoqi@0 | 2892 | if (tag == vmSymbols::tag_source_file()) { |
aoqi@0 | 2893 | // Check for SourceFile tag |
aoqi@0 | 2894 | if (_need_verify) { |
aoqi@0 | 2895 | guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); |
aoqi@0 | 2896 | } |
aoqi@0 | 2897 | if (parsed_sourcefile_attribute) { |
aoqi@0 | 2898 | classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); |
aoqi@0 | 2899 | } else { |
aoqi@0 | 2900 | parsed_sourcefile_attribute = true; |
aoqi@0 | 2901 | } |
aoqi@0 | 2902 | parse_classfile_sourcefile_attribute(CHECK); |
aoqi@0 | 2903 | } else if (tag == vmSymbols::tag_source_debug_extension()) { |
aoqi@0 | 2904 | // Check for SourceDebugExtension tag |
aoqi@0 | 2905 | parse_classfile_source_debug_extension_attribute((int)attribute_length, CHECK); |
aoqi@0 | 2906 | } else if (tag == vmSymbols::tag_inner_classes()) { |
aoqi@0 | 2907 | // Check for InnerClasses tag |
aoqi@0 | 2908 | if (parsed_innerclasses_attribute) { |
aoqi@0 | 2909 | classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); |
aoqi@0 | 2910 | } else { |
aoqi@0 | 2911 | parsed_innerclasses_attribute = true; |
aoqi@0 | 2912 | } |
aoqi@0 | 2913 | inner_classes_attribute_start = cfs->get_u1_buffer(); |
aoqi@0 | 2914 | inner_classes_attribute_length = attribute_length; |
aoqi@0 | 2915 | cfs->skip_u1(inner_classes_attribute_length, CHECK); |
aoqi@0 | 2916 | } else if (tag == vmSymbols::tag_synthetic()) { |
aoqi@0 | 2917 | // Check for Synthetic tag |
aoqi@0 | 2918 | // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec |
aoqi@0 | 2919 | if (attribute_length != 0) { |
aoqi@0 | 2920 | classfile_parse_error( |
aoqi@0 | 2921 | "Invalid Synthetic classfile attribute length %u in class file %s", |
aoqi@0 | 2922 | attribute_length, CHECK); |
aoqi@0 | 2923 | } |
aoqi@0 | 2924 | parse_classfile_synthetic_attribute(CHECK); |
aoqi@0 | 2925 | } else if (tag == vmSymbols::tag_deprecated()) { |
aoqi@0 | 2926 | // Check for Deprecatd tag - 4276120 |
aoqi@0 | 2927 | if (attribute_length != 0) { |
aoqi@0 | 2928 | classfile_parse_error( |
aoqi@0 | 2929 | "Invalid Deprecated classfile attribute length %u in class file %s", |
aoqi@0 | 2930 | attribute_length, CHECK); |
aoqi@0 | 2931 | } |
aoqi@0 | 2932 | } else if (_major_version >= JAVA_1_5_VERSION) { |
aoqi@0 | 2933 | if (tag == vmSymbols::tag_signature()) { |
aoqi@0 | 2934 | if (attribute_length != 2) { |
aoqi@0 | 2935 | classfile_parse_error( |
aoqi@0 | 2936 | "Wrong Signature attribute length %u in class file %s", |
aoqi@0 | 2937 | attribute_length, CHECK); |
aoqi@0 | 2938 | } |
aoqi@0 | 2939 | parse_classfile_signature_attribute(CHECK); |
aoqi@0 | 2940 | } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
aoqi@0 | 2941 | runtime_visible_annotations_length = attribute_length; |
aoqi@0 | 2942 | runtime_visible_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2943 | assert(runtime_visible_annotations != NULL, "null visible annotations"); |
aoqi@0 | 2944 | parse_annotations(runtime_visible_annotations, |
aoqi@0 | 2945 | runtime_visible_annotations_length, |
aoqi@0 | 2946 | parsed_annotations, |
aoqi@0 | 2947 | CHECK); |
aoqi@0 | 2948 | cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
aoqi@0 | 2949 | } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { |
aoqi@0 | 2950 | runtime_invisible_annotations_length = attribute_length; |
aoqi@0 | 2951 | runtime_invisible_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2952 | assert(runtime_invisible_annotations != NULL, "null invisible annotations"); |
aoqi@0 | 2953 | cfs->skip_u1(runtime_invisible_annotations_length, CHECK); |
aoqi@0 | 2954 | } else if (tag == vmSymbols::tag_enclosing_method()) { |
aoqi@0 | 2955 | if (parsed_enclosingmethod_attribute) { |
aoqi@0 | 2956 | classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); |
aoqi@0 | 2957 | } else { |
aoqi@0 | 2958 | parsed_enclosingmethod_attribute = true; |
aoqi@0 | 2959 | } |
aoqi@0 | 2960 | cfs->guarantee_more(4, CHECK); // class_index, method_index |
aoqi@0 | 2961 | enclosing_method_class_index = cfs->get_u2_fast(); |
aoqi@0 | 2962 | enclosing_method_method_index = cfs->get_u2_fast(); |
aoqi@0 | 2963 | if (enclosing_method_class_index == 0) { |
aoqi@0 | 2964 | classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
aoqi@0 | 2965 | } |
aoqi@0 | 2966 | // Validate the constant pool indices and types |
aoqi@0 | 2967 | check_property(valid_klass_reference_at(enclosing_method_class_index), |
aoqi@0 | 2968 | "Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
aoqi@0 | 2969 | if (enclosing_method_method_index != 0 && |
aoqi@0 | 2970 | (!_cp->is_within_bounds(enclosing_method_method_index) || |
aoqi@0 | 2971 | !_cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
aoqi@0 | 2972 | classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
aoqi@0 | 2973 | } |
aoqi@0 | 2974 | } else if (tag == vmSymbols::tag_bootstrap_methods() && |
aoqi@0 | 2975 | _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
aoqi@0 | 2976 | if (parsed_bootstrap_methods_attribute) |
aoqi@0 | 2977 | classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
aoqi@0 | 2978 | parsed_bootstrap_methods_attribute = true; |
aoqi@0 | 2979 | parse_classfile_bootstrap_methods_attribute(attribute_length, CHECK); |
aoqi@0 | 2980 | } else if (tag == vmSymbols::tag_runtime_visible_type_annotations()) { |
aoqi@0 | 2981 | if (runtime_visible_type_annotations != NULL) { |
aoqi@0 | 2982 | classfile_parse_error( |
aoqi@0 | 2983 | "Multiple RuntimeVisibleTypeAnnotations attributes in class file %s", CHECK); |
aoqi@0 | 2984 | } |
aoqi@0 | 2985 | runtime_visible_type_annotations_length = attribute_length; |
aoqi@0 | 2986 | runtime_visible_type_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 2987 | assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
aoqi@0 | 2988 | // No need for the VM to parse Type annotations |
aoqi@0 | 2989 | cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
aoqi@0 | 2990 | } else if (tag == vmSymbols::tag_runtime_invisible_type_annotations()) { |
aoqi@0 | 2991 | if (runtime_invisible_type_annotations_exists) { |
aoqi@0 | 2992 | classfile_parse_error( |
aoqi@0 | 2993 | "Multiple RuntimeInvisibleTypeAnnotations attributes in class file %s", CHECK); |
aoqi@0 | 2994 | } else { |
aoqi@0 | 2995 | runtime_invisible_type_annotations_exists = true; |
aoqi@0 | 2996 | } |
aoqi@0 | 2997 | if (PreserveAllAnnotations) { |
aoqi@0 | 2998 | runtime_invisible_type_annotations_length = attribute_length; |
aoqi@0 | 2999 | runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
aoqi@0 | 3000 | assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
aoqi@0 | 3001 | } |
aoqi@0 | 3002 | cfs->skip_u1(attribute_length, CHECK); |
aoqi@0 | 3003 | } else { |
aoqi@0 | 3004 | // Unknown attribute |
aoqi@0 | 3005 | cfs->skip_u1(attribute_length, CHECK); |
aoqi@0 | 3006 | } |
aoqi@0 | 3007 | } else { |
aoqi@0 | 3008 | // Unknown attribute |
aoqi@0 | 3009 | cfs->skip_u1(attribute_length, CHECK); |
aoqi@0 | 3010 | } |
aoqi@0 | 3011 | } |
aoqi@0 | 3012 | _annotations = assemble_annotations(runtime_visible_annotations, |
aoqi@0 | 3013 | runtime_visible_annotations_length, |
aoqi@0 | 3014 | runtime_invisible_annotations, |
aoqi@0 | 3015 | runtime_invisible_annotations_length, |
aoqi@0 | 3016 | CHECK); |
aoqi@0 | 3017 | _type_annotations = assemble_annotations(runtime_visible_type_annotations, |
aoqi@0 | 3018 | runtime_visible_type_annotations_length, |
aoqi@0 | 3019 | runtime_invisible_type_annotations, |
aoqi@0 | 3020 | runtime_invisible_type_annotations_length, |
aoqi@0 | 3021 | CHECK); |
aoqi@0 | 3022 | |
aoqi@0 | 3023 | if (parsed_innerclasses_attribute || parsed_enclosingmethod_attribute) { |
aoqi@0 | 3024 | u2 num_of_classes = parse_classfile_inner_classes_attribute( |
aoqi@0 | 3025 | inner_classes_attribute_start, |
aoqi@0 | 3026 | parsed_innerclasses_attribute, |
aoqi@0 | 3027 | enclosing_method_class_index, |
aoqi@0 | 3028 | enclosing_method_method_index, |
aoqi@0 | 3029 | CHECK); |
aoqi@0 | 3030 | if (parsed_innerclasses_attribute &&_need_verify && _major_version >= JAVA_1_5_VERSION) { |
aoqi@0 | 3031 | guarantee_property( |
aoqi@0 | 3032 | inner_classes_attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes, |
aoqi@0 | 3033 | "Wrong InnerClasses attribute length in class file %s", CHECK); |
aoqi@0 | 3034 | } |
aoqi@0 | 3035 | } |
aoqi@0 | 3036 | |
aoqi@0 | 3037 | if (_max_bootstrap_specifier_index >= 0) { |
aoqi@0 | 3038 | guarantee_property(parsed_bootstrap_methods_attribute, |
aoqi@0 | 3039 | "Missing BootstrapMethods attribute in class file %s", CHECK); |
aoqi@0 | 3040 | } |
aoqi@0 | 3041 | } |
aoqi@0 | 3042 | |
aoqi@0 | 3043 | void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
aoqi@0 | 3044 | if (_synthetic_flag) |
aoqi@0 | 3045 | k->set_is_synthetic(); |
aoqi@0 | 3046 | if (_sourcefile_index != 0) { |
aoqi@0 | 3047 | k->set_source_file_name_index(_sourcefile_index); |
aoqi@0 | 3048 | } |
aoqi@0 | 3049 | if (_generic_signature_index != 0) { |
aoqi@0 | 3050 | k->set_generic_signature_index(_generic_signature_index); |
aoqi@0 | 3051 | } |
aoqi@0 | 3052 | if (_sde_buffer != NULL) { |
aoqi@0 | 3053 | k->set_source_debug_extension(_sde_buffer, _sde_length); |
aoqi@0 | 3054 | } |
aoqi@0 | 3055 | } |
aoqi@0 | 3056 | |
aoqi@0 | 3057 | // Transfer ownership of metadata allocated to the InstanceKlass. |
aoqi@0 | 3058 | void ClassFileParser::apply_parsed_class_metadata( |
aoqi@0 | 3059 | instanceKlassHandle this_klass, |
aoqi@0 | 3060 | int java_fields_count, TRAPS) { |
aoqi@0 | 3061 | // Assign annotations if needed |
aoqi@0 | 3062 | if (_annotations != NULL || _type_annotations != NULL || |
aoqi@0 | 3063 | _fields_annotations != NULL || _fields_type_annotations != NULL) { |
aoqi@0 | 3064 | Annotations* annotations = Annotations::allocate(_loader_data, CHECK); |
aoqi@0 | 3065 | annotations->set_class_annotations(_annotations); |
aoqi@0 | 3066 | annotations->set_class_type_annotations(_type_annotations); |
aoqi@0 | 3067 | annotations->set_fields_annotations(_fields_annotations); |
aoqi@0 | 3068 | annotations->set_fields_type_annotations(_fields_type_annotations); |
aoqi@0 | 3069 | this_klass->set_annotations(annotations); |
aoqi@0 | 3070 | } |
aoqi@0 | 3071 | |
aoqi@0 | 3072 | _cp->set_pool_holder(this_klass()); |
aoqi@0 | 3073 | this_klass->set_constants(_cp); |
aoqi@0 | 3074 | this_klass->set_fields(_fields, java_fields_count); |
aoqi@0 | 3075 | this_klass->set_methods(_methods); |
aoqi@0 | 3076 | this_klass->set_inner_classes(_inner_classes); |
aoqi@0 | 3077 | this_klass->set_local_interfaces(_local_interfaces); |
aoqi@0 | 3078 | this_klass->set_transitive_interfaces(_transitive_interfaces); |
aoqi@0 | 3079 | |
aoqi@0 | 3080 | // Clear out these fields so they don't get deallocated by the destructor |
aoqi@0 | 3081 | clear_class_metadata(); |
aoqi@0 | 3082 | } |
aoqi@0 | 3083 | |
aoqi@0 | 3084 | AnnotationArray* ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, |
aoqi@0 | 3085 | int runtime_visible_annotations_length, |
aoqi@0 | 3086 | u1* runtime_invisible_annotations, |
aoqi@0 | 3087 | int runtime_invisible_annotations_length, TRAPS) { |
aoqi@0 | 3088 | AnnotationArray* annotations = NULL; |
aoqi@0 | 3089 | if (runtime_visible_annotations != NULL || |
aoqi@0 | 3090 | runtime_invisible_annotations != NULL) { |
aoqi@0 | 3091 | annotations = MetadataFactory::new_array<u1>(_loader_data, |
aoqi@0 | 3092 | runtime_visible_annotations_length + |
aoqi@0 | 3093 | runtime_invisible_annotations_length, |
aoqi@0 | 3094 | CHECK_(annotations)); |
aoqi@0 | 3095 | if (runtime_visible_annotations != NULL) { |
aoqi@0 | 3096 | for (int i = 0; i < runtime_visible_annotations_length; i++) { |
aoqi@0 | 3097 | annotations->at_put(i, runtime_visible_annotations[i]); |
aoqi@0 | 3098 | } |
aoqi@0 | 3099 | } |
aoqi@0 | 3100 | if (runtime_invisible_annotations != NULL) { |
aoqi@0 | 3101 | for (int i = 0; i < runtime_invisible_annotations_length; i++) { |
aoqi@0 | 3102 | int append = runtime_visible_annotations_length+i; |
aoqi@0 | 3103 | annotations->at_put(append, runtime_invisible_annotations[i]); |
aoqi@0 | 3104 | } |
aoqi@0 | 3105 | } |
aoqi@0 | 3106 | } |
aoqi@0 | 3107 | return annotations; |
aoqi@0 | 3108 | } |
aoqi@0 | 3109 | |
aoqi@0 | 3110 | instanceKlassHandle ClassFileParser::parse_super_class(int super_class_index, |
aoqi@0 | 3111 | TRAPS) { |
aoqi@0 | 3112 | instanceKlassHandle super_klass; |
aoqi@0 | 3113 | if (super_class_index == 0) { |
aoqi@0 | 3114 | check_property(_class_name == vmSymbols::java_lang_Object(), |
aoqi@0 | 3115 | "Invalid superclass index %u in class file %s", |
aoqi@0 | 3116 | super_class_index, |
aoqi@0 | 3117 | CHECK_NULL); |
aoqi@0 | 3118 | } else { |
aoqi@0 | 3119 | check_property(valid_klass_reference_at(super_class_index), |
aoqi@0 | 3120 | "Invalid superclass index %u in class file %s", |
aoqi@0 | 3121 | super_class_index, |
aoqi@0 | 3122 | CHECK_NULL); |
aoqi@0 | 3123 | // The class name should be legal because it is checked when parsing constant pool. |
aoqi@0 | 3124 | // However, make sure it is not an array type. |
aoqi@0 | 3125 | bool is_array = false; |
aoqi@0 | 3126 | if (_cp->tag_at(super_class_index).is_klass()) { |
aoqi@0 | 3127 | super_klass = instanceKlassHandle(THREAD, _cp->resolved_klass_at(super_class_index)); |
aoqi@0 | 3128 | if (_need_verify) |
aoqi@0 | 3129 | is_array = super_klass->oop_is_array(); |
aoqi@0 | 3130 | } else if (_need_verify) { |
aoqi@0 | 3131 | is_array = (_cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
aoqi@0 | 3132 | } |
aoqi@0 | 3133 | if (_need_verify) { |
aoqi@0 | 3134 | guarantee_property(!is_array, |
aoqi@0 | 3135 | "Bad superclass name in class file %s", CHECK_NULL); |
aoqi@0 | 3136 | } |
aoqi@0 | 3137 | } |
aoqi@0 | 3138 | return super_klass; |
aoqi@0 | 3139 | } |
aoqi@0 | 3140 | |
aoqi@0 | 3141 | |
aoqi@0 | 3142 | // Values needed for oopmap and InstanceKlass creation |
aoqi@0 | 3143 | class FieldLayoutInfo : public StackObj { |
aoqi@0 | 3144 | public: |
aoqi@0 | 3145 | int* nonstatic_oop_offsets; |
aoqi@0 | 3146 | unsigned int* nonstatic_oop_counts; |
aoqi@0 | 3147 | unsigned int nonstatic_oop_map_count; |
aoqi@0 | 3148 | unsigned int total_oop_map_count; |
aoqi@0 | 3149 | int instance_size; |
aoqi@0 | 3150 | int nonstatic_field_size; |
aoqi@0 | 3151 | int static_field_size; |
aoqi@0 | 3152 | bool has_nonstatic_fields; |
aoqi@0 | 3153 | }; |
aoqi@0 | 3154 | |
aoqi@0 | 3155 | // Layout fields and fill in FieldLayoutInfo. Could use more refactoring! |
aoqi@0 | 3156 | void ClassFileParser::layout_fields(Handle class_loader, |
aoqi@0 | 3157 | FieldAllocationCount* fac, |
aoqi@0 | 3158 | ClassAnnotationCollector* parsed_annotations, |
aoqi@0 | 3159 | FieldLayoutInfo* info, |
aoqi@0 | 3160 | TRAPS) { |
aoqi@0 | 3161 | |
aoqi@0 | 3162 | // Field size and offset computation |
aoqi@0 | 3163 | int nonstatic_field_size = _super_klass() == NULL ? 0 : _super_klass()->nonstatic_field_size(); |
aoqi@0 | 3164 | int next_static_oop_offset; |
aoqi@0 | 3165 | int next_static_double_offset; |
aoqi@0 | 3166 | int next_static_word_offset; |
aoqi@0 | 3167 | int next_static_short_offset; |
aoqi@0 | 3168 | int next_static_byte_offset; |
aoqi@0 | 3169 | int next_nonstatic_oop_offset; |
aoqi@0 | 3170 | int next_nonstatic_double_offset; |
aoqi@0 | 3171 | int next_nonstatic_word_offset; |
aoqi@0 | 3172 | int next_nonstatic_short_offset; |
aoqi@0 | 3173 | int next_nonstatic_byte_offset; |
aoqi@0 | 3174 | int first_nonstatic_oop_offset; |
aoqi@0 | 3175 | int next_nonstatic_field_offset; |
aoqi@0 | 3176 | int next_nonstatic_padded_offset; |
aoqi@0 | 3177 | |
aoqi@0 | 3178 | // Count the contended fields by type. |
aoqi@0 | 3179 | // |
aoqi@0 | 3180 | // We ignore static fields, because @Contended is not supported for them. |
aoqi@0 | 3181 | // The layout code below will also ignore the static fields. |
aoqi@0 | 3182 | int nonstatic_contended_count = 0; |
aoqi@0 | 3183 | FieldAllocationCount fac_contended; |
aoqi@0 | 3184 | for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
aoqi@0 | 3185 | FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
aoqi@0 | 3186 | if (fs.is_contended()) { |
aoqi@0 | 3187 | fac_contended.count[atype]++; |
aoqi@0 | 3188 | if (!fs.access_flags().is_static()) { |
aoqi@0 | 3189 | nonstatic_contended_count++; |
aoqi@0 | 3190 | } |
aoqi@0 | 3191 | } |
aoqi@0 | 3192 | } |
aoqi@0 | 3193 | |
aoqi@0 | 3194 | |
aoqi@0 | 3195 | // Calculate the starting byte offsets |
aoqi@0 | 3196 | next_static_oop_offset = InstanceMirrorKlass::offset_of_static_fields(); |
aoqi@0 | 3197 | next_static_double_offset = next_static_oop_offset + |
aoqi@0 | 3198 | ((fac->count[STATIC_OOP]) * heapOopSize); |
aoqi@0 | 3199 | if ( fac->count[STATIC_DOUBLE] && |
aoqi@0 | 3200 | (Universe::field_type_should_be_aligned(T_DOUBLE) || |
aoqi@0 | 3201 | Universe::field_type_should_be_aligned(T_LONG)) ) { |
aoqi@0 | 3202 | next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); |
aoqi@0 | 3203 | } |
aoqi@0 | 3204 | |
aoqi@0 | 3205 | next_static_word_offset = next_static_double_offset + |
aoqi@0 | 3206 | ((fac->count[STATIC_DOUBLE]) * BytesPerLong); |
aoqi@0 | 3207 | next_static_short_offset = next_static_word_offset + |
aoqi@0 | 3208 | ((fac->count[STATIC_WORD]) * BytesPerInt); |
aoqi@0 | 3209 | next_static_byte_offset = next_static_short_offset + |
aoqi@0 | 3210 | ((fac->count[STATIC_SHORT]) * BytesPerShort); |
aoqi@0 | 3211 | |
aoqi@0 | 3212 | int nonstatic_fields_start = instanceOopDesc::base_offset_in_bytes() + |
aoqi@0 | 3213 | nonstatic_field_size * heapOopSize; |
aoqi@0 | 3214 | |
aoqi@0 | 3215 | next_nonstatic_field_offset = nonstatic_fields_start; |
aoqi@0 | 3216 | |
aoqi@0 | 3217 | bool is_contended_class = parsed_annotations->is_contended(); |
aoqi@0 | 3218 | |
aoqi@0 | 3219 | // Class is contended, pad before all the fields |
aoqi@0 | 3220 | if (is_contended_class) { |
aoqi@0 | 3221 | next_nonstatic_field_offset += ContendedPaddingWidth; |
aoqi@0 | 3222 | } |
aoqi@0 | 3223 | |
aoqi@0 | 3224 | // Compute the non-contended fields count. |
aoqi@0 | 3225 | // The packing code below relies on these counts to determine if some field |
aoqi@0 | 3226 | // can be squeezed into the alignment gap. Contended fields are obviously |
aoqi@0 | 3227 | // exempt from that. |
aoqi@0 | 3228 | unsigned int nonstatic_double_count = fac->count[NONSTATIC_DOUBLE] - fac_contended.count[NONSTATIC_DOUBLE]; |
aoqi@0 | 3229 | unsigned int nonstatic_word_count = fac->count[NONSTATIC_WORD] - fac_contended.count[NONSTATIC_WORD]; |
aoqi@0 | 3230 | unsigned int nonstatic_short_count = fac->count[NONSTATIC_SHORT] - fac_contended.count[NONSTATIC_SHORT]; |
aoqi@0 | 3231 | unsigned int nonstatic_byte_count = fac->count[NONSTATIC_BYTE] - fac_contended.count[NONSTATIC_BYTE]; |
aoqi@0 | 3232 | unsigned int nonstatic_oop_count = fac->count[NONSTATIC_OOP] - fac_contended.count[NONSTATIC_OOP]; |
aoqi@0 | 3233 | |
aoqi@0 | 3234 | // Total non-static fields count, including every contended field |
aoqi@0 | 3235 | unsigned int nonstatic_fields_count = fac->count[NONSTATIC_DOUBLE] + fac->count[NONSTATIC_WORD] + |
aoqi@0 | 3236 | fac->count[NONSTATIC_SHORT] + fac->count[NONSTATIC_BYTE] + |
aoqi@0 | 3237 | fac->count[NONSTATIC_OOP]; |
aoqi@0 | 3238 | |
aoqi@0 | 3239 | bool super_has_nonstatic_fields = |
aoqi@0 | 3240 | (_super_klass() != NULL && _super_klass->has_nonstatic_fields()); |
aoqi@0 | 3241 | bool has_nonstatic_fields = super_has_nonstatic_fields || (nonstatic_fields_count != 0); |
aoqi@0 | 3242 | |
aoqi@0 | 3243 | |
aoqi@0 | 3244 | // Prepare list of oops for oop map generation. |
aoqi@0 | 3245 | // |
aoqi@0 | 3246 | // "offset" and "count" lists are describing the set of contiguous oop |
aoqi@0 | 3247 | // regions. offset[i] is the start of the i-th region, which then has |
aoqi@0 | 3248 | // count[i] oops following. Before we know how many regions are required, |
aoqi@0 | 3249 | // we pessimistically allocate the maps to fit all the oops into the |
aoqi@0 | 3250 | // distinct regions. |
aoqi@0 | 3251 | // |
aoqi@0 | 3252 | // TODO: We add +1 to always allocate non-zero resource arrays; we need |
aoqi@0 | 3253 | // to figure out if we still need to do this. |
aoqi@0 | 3254 | int* nonstatic_oop_offsets; |
aoqi@0 | 3255 | unsigned int* nonstatic_oop_counts; |
aoqi@0 | 3256 | unsigned int nonstatic_oop_map_count = 0; |
aoqi@0 | 3257 | unsigned int max_nonstatic_oop_maps = fac->count[NONSTATIC_OOP] + 1; |
aoqi@0 | 3258 | |
aoqi@0 | 3259 | nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 3260 | THREAD, int, max_nonstatic_oop_maps); |
aoqi@0 | 3261 | nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
aoqi@0 | 3262 | THREAD, unsigned int, max_nonstatic_oop_maps); |
aoqi@0 | 3263 | |
aoqi@0 | 3264 | first_nonstatic_oop_offset = 0; // will be set for first oop field |
aoqi@0 | 3265 | |
aoqi@0 | 3266 | bool compact_fields = CompactFields; |
aoqi@0 | 3267 | int allocation_style = FieldsAllocationStyle; |
aoqi@0 | 3268 | if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
aoqi@0 | 3269 | assert(false, "0 <= FieldsAllocationStyle <= 2"); |
aoqi@0 | 3270 | allocation_style = 1; // Optimistic |
aoqi@0 | 3271 | } |
aoqi@0 | 3272 | |
aoqi@0 | 3273 | // The next classes have predefined hard-coded fields offsets |
aoqi@0 | 3274 | // (see in JavaClasses::compute_hard_coded_offsets()). |
aoqi@0 | 3275 | // Use default fields allocation order for them. |
aoqi@0 | 3276 | if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && |
aoqi@0 | 3277 | (_class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
aoqi@0 | 3278 | _class_name == vmSymbols::java_lang_Class() || |
aoqi@0 | 3279 | _class_name == vmSymbols::java_lang_ClassLoader() || |
aoqi@0 | 3280 | _class_name == vmSymbols::java_lang_ref_Reference() || |
aoqi@0 | 3281 | _class_name == vmSymbols::java_lang_ref_SoftReference() || |
aoqi@0 | 3282 | _class_name == vmSymbols::java_lang_StackTraceElement() || |
aoqi@0 | 3283 | _class_name == vmSymbols::java_lang_String() || |
aoqi@0 | 3284 | _class_name == vmSymbols::java_lang_Throwable() || |
aoqi@0 | 3285 | _class_name == vmSymbols::java_lang_Boolean() || |
aoqi@0 | 3286 | _class_name == vmSymbols::java_lang_Character() || |
aoqi@0 | 3287 | _class_name == vmSymbols::java_lang_Float() || |
aoqi@0 | 3288 | _class_name == vmSymbols::java_lang_Double() || |
aoqi@0 | 3289 | _class_name == vmSymbols::java_lang_Byte() || |
aoqi@0 | 3290 | _class_name == vmSymbols::java_lang_Short() || |
aoqi@0 | 3291 | _class_name == vmSymbols::java_lang_Integer() || |
aoqi@0 | 3292 | _class_name == vmSymbols::java_lang_Long())) { |
aoqi@0 | 3293 | allocation_style = 0; // Allocate oops first |
aoqi@0 | 3294 | compact_fields = false; // Don't compact fields |
aoqi@0 | 3295 | } |
aoqi@0 | 3296 | |
aoqi@0 | 3297 | // Rearrange fields for a given allocation style |
aoqi@0 | 3298 | if( allocation_style == 0 ) { |
aoqi@0 | 3299 | // Fields order: oops, longs/doubles, ints, shorts/chars, bytes, padded fields |
aoqi@0 | 3300 | next_nonstatic_oop_offset = next_nonstatic_field_offset; |
aoqi@0 | 3301 | next_nonstatic_double_offset = next_nonstatic_oop_offset + |
aoqi@0 | 3302 | (nonstatic_oop_count * heapOopSize); |
aoqi@0 | 3303 | } else if( allocation_style == 1 ) { |
aoqi@0 | 3304 | // Fields order: longs/doubles, ints, shorts/chars, bytes, oops, padded fields |
aoqi@0 | 3305 | next_nonstatic_double_offset = next_nonstatic_field_offset; |
aoqi@0 | 3306 | } else if( allocation_style == 2 ) { |
aoqi@0 | 3307 | // Fields allocation: oops fields in super and sub classes are together. |
aoqi@0 | 3308 | if( nonstatic_field_size > 0 && _super_klass() != NULL && |
aoqi@0 | 3309 | _super_klass->nonstatic_oop_map_size() > 0 ) { |
aoqi@0 | 3310 | unsigned int map_count = _super_klass->nonstatic_oop_map_count(); |
aoqi@0 | 3311 | OopMapBlock* first_map = _super_klass->start_of_nonstatic_oop_maps(); |
aoqi@0 | 3312 | OopMapBlock* last_map = first_map + map_count - 1; |
aoqi@0 | 3313 | int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
aoqi@0 | 3314 | if (next_offset == next_nonstatic_field_offset) { |
aoqi@0 | 3315 | allocation_style = 0; // allocate oops first |
aoqi@0 | 3316 | next_nonstatic_oop_offset = next_nonstatic_field_offset; |
aoqi@0 | 3317 | next_nonstatic_double_offset = next_nonstatic_oop_offset + |
aoqi@0 | 3318 | (nonstatic_oop_count * heapOopSize); |
aoqi@0 | 3319 | } |
aoqi@0 | 3320 | } |
aoqi@0 | 3321 | if( allocation_style == 2 ) { |
aoqi@0 | 3322 | allocation_style = 1; // allocate oops last |
aoqi@0 | 3323 | next_nonstatic_double_offset = next_nonstatic_field_offset; |
aoqi@0 | 3324 | } |
aoqi@0 | 3325 | } else { |
aoqi@0 | 3326 | ShouldNotReachHere(); |
aoqi@0 | 3327 | } |
aoqi@0 | 3328 | |
aoqi@0 | 3329 | int nonstatic_oop_space_count = 0; |
aoqi@0 | 3330 | int nonstatic_word_space_count = 0; |
aoqi@0 | 3331 | int nonstatic_short_space_count = 0; |
aoqi@0 | 3332 | int nonstatic_byte_space_count = 0; |
aoqi@0 | 3333 | int nonstatic_oop_space_offset; |
aoqi@0 | 3334 | int nonstatic_word_space_offset; |
aoqi@0 | 3335 | int nonstatic_short_space_offset; |
aoqi@0 | 3336 | int nonstatic_byte_space_offset; |
aoqi@0 | 3337 | |
aoqi@0 | 3338 | // Try to squeeze some of the fields into the gaps due to |
aoqi@0 | 3339 | // long/double alignment. |
aoqi@0 | 3340 | if( nonstatic_double_count > 0 ) { |
aoqi@0 | 3341 | int offset = next_nonstatic_double_offset; |
aoqi@0 | 3342 | next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
aoqi@0 | 3343 | if( compact_fields && offset != next_nonstatic_double_offset ) { |
aoqi@0 | 3344 | // Allocate available fields into the gap before double field. |
aoqi@0 | 3345 | int length = next_nonstatic_double_offset - offset; |
aoqi@0 | 3346 | assert(length == BytesPerInt, ""); |
aoqi@0 | 3347 | nonstatic_word_space_offset = offset; |
aoqi@0 | 3348 | if( nonstatic_word_count > 0 ) { |
aoqi@0 | 3349 | nonstatic_word_count -= 1; |
aoqi@0 | 3350 | nonstatic_word_space_count = 1; // Only one will fit |
aoqi@0 | 3351 | length -= BytesPerInt; |
aoqi@0 | 3352 | offset += BytesPerInt; |
aoqi@0 | 3353 | } |
aoqi@0 | 3354 | nonstatic_short_space_offset = offset; |
aoqi@0 | 3355 | while( length >= BytesPerShort && nonstatic_short_count > 0 ) { |
aoqi@0 | 3356 | nonstatic_short_count -= 1; |
aoqi@0 | 3357 | nonstatic_short_space_count += 1; |
aoqi@0 | 3358 | length -= BytesPerShort; |
aoqi@0 | 3359 | offset += BytesPerShort; |
aoqi@0 | 3360 | } |
aoqi@0 | 3361 | nonstatic_byte_space_offset = offset; |
aoqi@0 | 3362 | while( length > 0 && nonstatic_byte_count > 0 ) { |
aoqi@0 | 3363 | nonstatic_byte_count -= 1; |
aoqi@0 | 3364 | nonstatic_byte_space_count += 1; |
aoqi@0 | 3365 | length -= 1; |
aoqi@0 | 3366 | } |
aoqi@0 | 3367 | // Allocate oop field in the gap if there are no other fields for that. |
aoqi@0 | 3368 | nonstatic_oop_space_offset = offset; |
aoqi@0 | 3369 | if( length >= heapOopSize && nonstatic_oop_count > 0 && |
aoqi@0 | 3370 | allocation_style != 0 ) { // when oop fields not first |
aoqi@0 | 3371 | nonstatic_oop_count -= 1; |
aoqi@0 | 3372 | nonstatic_oop_space_count = 1; // Only one will fit |
aoqi@0 | 3373 | length -= heapOopSize; |
aoqi@0 | 3374 | offset += heapOopSize; |
aoqi@0 | 3375 | } |
aoqi@0 | 3376 | } |
aoqi@0 | 3377 | } |
aoqi@0 | 3378 | |
aoqi@0 | 3379 | next_nonstatic_word_offset = next_nonstatic_double_offset + |
aoqi@0 | 3380 | (nonstatic_double_count * BytesPerLong); |
aoqi@0 | 3381 | next_nonstatic_short_offset = next_nonstatic_word_offset + |
aoqi@0 | 3382 | (nonstatic_word_count * BytesPerInt); |
aoqi@0 | 3383 | next_nonstatic_byte_offset = next_nonstatic_short_offset + |
aoqi@0 | 3384 | (nonstatic_short_count * BytesPerShort); |
aoqi@0 | 3385 | next_nonstatic_padded_offset = next_nonstatic_byte_offset + |
aoqi@0 | 3386 | nonstatic_byte_count; |
aoqi@0 | 3387 | |
aoqi@0 | 3388 | // let oops jump before padding with this allocation style |
aoqi@0 | 3389 | if( allocation_style == 1 ) { |
aoqi@0 | 3390 | next_nonstatic_oop_offset = next_nonstatic_padded_offset; |
aoqi@0 | 3391 | if( nonstatic_oop_count > 0 ) { |
aoqi@0 | 3392 | next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
aoqi@0 | 3393 | } |
aoqi@0 | 3394 | next_nonstatic_padded_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
aoqi@0 | 3395 | } |
aoqi@0 | 3396 | |
aoqi@0 | 3397 | // Iterate over fields again and compute correct offsets. |
aoqi@0 | 3398 | // The field allocation type was temporarily stored in the offset slot. |
aoqi@0 | 3399 | // oop fields are located before non-oop fields (static and non-static). |
aoqi@0 | 3400 | for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
aoqi@0 | 3401 | |
aoqi@0 | 3402 | // skip already laid out fields |
aoqi@0 | 3403 | if (fs.is_offset_set()) continue; |
aoqi@0 | 3404 | |
aoqi@0 | 3405 | // contended instance fields are handled below |
aoqi@0 | 3406 | if (fs.is_contended() && !fs.access_flags().is_static()) continue; |
aoqi@0 | 3407 | |
aoqi@0 | 3408 | int real_offset; |
aoqi@0 | 3409 | FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
aoqi@0 | 3410 | |
aoqi@0 | 3411 | // pack the rest of the fields |
aoqi@0 | 3412 | switch (atype) { |
aoqi@0 | 3413 | case STATIC_OOP: |
aoqi@0 | 3414 | real_offset = next_static_oop_offset; |
aoqi@0 | 3415 | next_static_oop_offset += heapOopSize; |
aoqi@0 | 3416 | break; |
aoqi@0 | 3417 | case STATIC_BYTE: |
aoqi@0 | 3418 | real_offset = next_static_byte_offset; |
aoqi@0 | 3419 | next_static_byte_offset += 1; |
aoqi@0 | 3420 | break; |
aoqi@0 | 3421 | case STATIC_SHORT: |
aoqi@0 | 3422 | real_offset = next_static_short_offset; |
aoqi@0 | 3423 | next_static_short_offset += BytesPerShort; |
aoqi@0 | 3424 | break; |
aoqi@0 | 3425 | case STATIC_WORD: |
aoqi@0 | 3426 | real_offset = next_static_word_offset; |
aoqi@0 | 3427 | next_static_word_offset += BytesPerInt; |
aoqi@0 | 3428 | break; |
aoqi@0 | 3429 | case STATIC_DOUBLE: |
aoqi@0 | 3430 | real_offset = next_static_double_offset; |
aoqi@0 | 3431 | next_static_double_offset += BytesPerLong; |
aoqi@0 | 3432 | break; |
aoqi@0 | 3433 | case NONSTATIC_OOP: |
aoqi@0 | 3434 | if( nonstatic_oop_space_count > 0 ) { |
aoqi@0 | 3435 | real_offset = nonstatic_oop_space_offset; |
aoqi@0 | 3436 | nonstatic_oop_space_offset += heapOopSize; |
aoqi@0 | 3437 | nonstatic_oop_space_count -= 1; |
aoqi@0 | 3438 | } else { |
aoqi@0 | 3439 | real_offset = next_nonstatic_oop_offset; |
aoqi@0 | 3440 | next_nonstatic_oop_offset += heapOopSize; |
aoqi@0 | 3441 | } |
aoqi@0 | 3442 | // Update oop maps |
aoqi@0 | 3443 | if( nonstatic_oop_map_count > 0 && |
aoqi@0 | 3444 | nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == |
aoqi@0 | 3445 | real_offset - |
aoqi@0 | 3446 | int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
aoqi@0 | 3447 | heapOopSize ) { |
aoqi@0 | 3448 | // Extend current oop map |
aoqi@0 | 3449 | assert(nonstatic_oop_map_count - 1 < max_nonstatic_oop_maps, "range check"); |
aoqi@0 | 3450 | nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
aoqi@0 | 3451 | } else { |
aoqi@0 | 3452 | // Create new oop map |
aoqi@0 | 3453 | assert(nonstatic_oop_map_count < max_nonstatic_oop_maps, "range check"); |
aoqi@0 | 3454 | nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
aoqi@0 | 3455 | nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
aoqi@0 | 3456 | nonstatic_oop_map_count += 1; |
aoqi@0 | 3457 | if( first_nonstatic_oop_offset == 0 ) { // Undefined |
aoqi@0 | 3458 | first_nonstatic_oop_offset = real_offset; |
aoqi@0 | 3459 | } |
aoqi@0 | 3460 | } |
aoqi@0 | 3461 | break; |
aoqi@0 | 3462 | case NONSTATIC_BYTE: |
aoqi@0 | 3463 | if( nonstatic_byte_space_count > 0 ) { |
aoqi@0 | 3464 | real_offset = nonstatic_byte_space_offset; |
aoqi@0 | 3465 | nonstatic_byte_space_offset += 1; |
aoqi@0 | 3466 | nonstatic_byte_space_count -= 1; |
aoqi@0 | 3467 | } else { |
aoqi@0 | 3468 | real_offset = next_nonstatic_byte_offset; |
aoqi@0 | 3469 | next_nonstatic_byte_offset += 1; |
aoqi@0 | 3470 | } |
aoqi@0 | 3471 | break; |
aoqi@0 | 3472 | case NONSTATIC_SHORT: |
aoqi@0 | 3473 | if( nonstatic_short_space_count > 0 ) { |
aoqi@0 | 3474 | real_offset = nonstatic_short_space_offset; |
aoqi@0 | 3475 | nonstatic_short_space_offset += BytesPerShort; |
aoqi@0 | 3476 | nonstatic_short_space_count -= 1; |
aoqi@0 | 3477 | } else { |
aoqi@0 | 3478 | real_offset = next_nonstatic_short_offset; |
aoqi@0 | 3479 | next_nonstatic_short_offset += BytesPerShort; |
aoqi@0 | 3480 | } |
aoqi@0 | 3481 | break; |
aoqi@0 | 3482 | case NONSTATIC_WORD: |
aoqi@0 | 3483 | if( nonstatic_word_space_count > 0 ) { |
aoqi@0 | 3484 | real_offset = nonstatic_word_space_offset; |
aoqi@0 | 3485 | nonstatic_word_space_offset += BytesPerInt; |
aoqi@0 | 3486 | nonstatic_word_space_count -= 1; |
aoqi@0 | 3487 | } else { |
aoqi@0 | 3488 | real_offset = next_nonstatic_word_offset; |
aoqi@0 | 3489 | next_nonstatic_word_offset += BytesPerInt; |
aoqi@0 | 3490 | } |
aoqi@0 | 3491 | break; |
aoqi@0 | 3492 | case NONSTATIC_DOUBLE: |
aoqi@0 | 3493 | real_offset = next_nonstatic_double_offset; |
aoqi@0 | 3494 | next_nonstatic_double_offset += BytesPerLong; |
aoqi@0 | 3495 | break; |
aoqi@0 | 3496 | default: |
aoqi@0 | 3497 | ShouldNotReachHere(); |
aoqi@0 | 3498 | } |
aoqi@0 | 3499 | fs.set_offset(real_offset); |
aoqi@0 | 3500 | } |
aoqi@0 | 3501 | |
aoqi@0 | 3502 | |
aoqi@0 | 3503 | // Handle the contended cases. |
aoqi@0 | 3504 | // |
aoqi@0 | 3505 | // Each contended field should not intersect the cache line with another contended field. |
aoqi@0 | 3506 | // In the absence of alignment information, we end up with pessimistically separating |
aoqi@0 | 3507 | // the fields with full-width padding. |
aoqi@0 | 3508 | // |
aoqi@0 | 3509 | // Additionally, this should not break alignment for the fields, so we round the alignment up |
aoqi@0 | 3510 | // for each field. |
aoqi@0 | 3511 | if (nonstatic_contended_count > 0) { |
aoqi@0 | 3512 | |
aoqi@0 | 3513 | // if there is at least one contended field, we need to have pre-padding for them |
aoqi@0 | 3514 | next_nonstatic_padded_offset += ContendedPaddingWidth; |
aoqi@0 | 3515 | |
aoqi@0 | 3516 | // collect all contended groups |
aoqi@0 | 3517 | BitMap bm(_cp->size()); |
aoqi@0 | 3518 | for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
aoqi@0 | 3519 | // skip already laid out fields |
aoqi@0 | 3520 | if (fs.is_offset_set()) continue; |
aoqi@0 | 3521 | |
aoqi@0 | 3522 | if (fs.is_contended()) { |
aoqi@0 | 3523 | bm.set_bit(fs.contended_group()); |
aoqi@0 | 3524 | } |
aoqi@0 | 3525 | } |
aoqi@0 | 3526 | |
aoqi@0 | 3527 | int current_group = -1; |
aoqi@0 | 3528 | while ((current_group = (int)bm.get_next_one_offset(current_group + 1)) != (int)bm.size()) { |
aoqi@0 | 3529 | |
aoqi@0 | 3530 | for (AllFieldStream fs(_fields, _cp); !fs.done(); fs.next()) { |
aoqi@0 | 3531 | |
aoqi@0 | 3532 | // skip already laid out fields |
aoqi@0 | 3533 | if (fs.is_offset_set()) continue; |
aoqi@0 | 3534 | |
aoqi@0 | 3535 | // skip non-contended fields and fields from different group |
aoqi@0 | 3536 | if (!fs.is_contended() || (fs.contended_group() != current_group)) continue; |
aoqi@0 | 3537 | |
aoqi@0 | 3538 | // handle statics below |
aoqi@0 | 3539 | if (fs.access_flags().is_static()) continue; |
aoqi@0 | 3540 | |
aoqi@0 | 3541 | int real_offset; |
aoqi@0 | 3542 | FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
aoqi@0 | 3543 | |
aoqi@0 | 3544 | switch (atype) { |
aoqi@0 | 3545 | case NONSTATIC_BYTE: |
aoqi@0 | 3546 | next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, 1); |
aoqi@0 | 3547 | real_offset = next_nonstatic_padded_offset; |
aoqi@0 | 3548 | next_nonstatic_padded_offset += 1; |
aoqi@0 | 3549 | break; |
aoqi@0 | 3550 | |
aoqi@0 | 3551 | case NONSTATIC_SHORT: |
aoqi@0 | 3552 | next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerShort); |
aoqi@0 | 3553 | real_offset = next_nonstatic_padded_offset; |
aoqi@0 | 3554 | next_nonstatic_padded_offset += BytesPerShort; |
aoqi@0 | 3555 | break; |
aoqi@0 | 3556 | |
aoqi@0 | 3557 | case NONSTATIC_WORD: |
aoqi@0 | 3558 | next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerInt); |
aoqi@0 | 3559 | real_offset = next_nonstatic_padded_offset; |
aoqi@0 | 3560 | next_nonstatic_padded_offset += BytesPerInt; |
aoqi@0 | 3561 | break; |
aoqi@0 | 3562 | |
aoqi@0 | 3563 | case NONSTATIC_DOUBLE: |
aoqi@0 | 3564 | next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerLong); |
aoqi@0 | 3565 | real_offset = next_nonstatic_padded_offset; |
aoqi@0 | 3566 | next_nonstatic_padded_offset += BytesPerLong; |
aoqi@0 | 3567 | break; |
aoqi@0 | 3568 | |
aoqi@0 | 3569 | case NONSTATIC_OOP: |
aoqi@0 | 3570 | next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, heapOopSize); |
aoqi@0 | 3571 | real_offset = next_nonstatic_padded_offset; |
aoqi@0 | 3572 | next_nonstatic_padded_offset += heapOopSize; |
aoqi@0 | 3573 | |
aoqi@0 | 3574 | // Create new oop map |
aoqi@0 | 3575 | assert(nonstatic_oop_map_count < max_nonstatic_oop_maps, "range check"); |
aoqi@0 | 3576 | nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
aoqi@0 | 3577 | nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
aoqi@0 | 3578 | nonstatic_oop_map_count += 1; |
aoqi@0 | 3579 | if( first_nonstatic_oop_offset == 0 ) { // Undefined |
aoqi@0 | 3580 | first_nonstatic_oop_offset = real_offset; |
aoqi@0 | 3581 | } |
aoqi@0 | 3582 | break; |
aoqi@0 | 3583 | |
aoqi@0 | 3584 | default: |
aoqi@0 | 3585 | ShouldNotReachHere(); |
aoqi@0 | 3586 | } |
aoqi@0 | 3587 | |
aoqi@0 | 3588 | if (fs.contended_group() == 0) { |
aoqi@0 | 3589 | // Contended group defines the equivalence class over the fields: |
aoqi@0 | 3590 | // the fields within the same contended group are not inter-padded. |
aoqi@0 | 3591 | // The only exception is default group, which does not incur the |
aoqi@0 | 3592 | // equivalence, and so requires intra-padding. |
aoqi@0 | 3593 | next_nonstatic_padded_offset += ContendedPaddingWidth; |
aoqi@0 | 3594 | } |
aoqi@0 | 3595 | |
aoqi@0 | 3596 | fs.set_offset(real_offset); |
aoqi@0 | 3597 | } // for |
aoqi@0 | 3598 | |
aoqi@0 | 3599 | // Start laying out the next group. |
aoqi@0 | 3600 | // Note that this will effectively pad the last group in the back; |
aoqi@0 | 3601 | // this is expected to alleviate memory contention effects for |
aoqi@0 | 3602 | // subclass fields and/or adjacent object. |
aoqi@0 | 3603 | // If this was the default group, the padding is already in place. |
aoqi@0 | 3604 | if (current_group != 0) { |
aoqi@0 | 3605 | next_nonstatic_padded_offset += ContendedPaddingWidth; |
aoqi@0 | 3606 | } |
aoqi@0 | 3607 | } |
aoqi@0 | 3608 | |
aoqi@0 | 3609 | // handle static fields |
aoqi@0 | 3610 | } |
aoqi@0 | 3611 | |
aoqi@0 | 3612 | // Entire class is contended, pad in the back. |
aoqi@0 | 3613 | // This helps to alleviate memory contention effects for subclass fields |
aoqi@0 | 3614 | // and/or adjacent object. |
aoqi@0 | 3615 | if (is_contended_class) { |
aoqi@0 | 3616 | next_nonstatic_padded_offset += ContendedPaddingWidth; |
aoqi@0 | 3617 | } |
aoqi@0 | 3618 | |
aoqi@0 | 3619 | int notaligned_nonstatic_fields_end = next_nonstatic_padded_offset; |
aoqi@0 | 3620 | |
aoqi@0 | 3621 | int nonstatic_fields_end = align_size_up(notaligned_nonstatic_fields_end, heapOopSize); |
aoqi@0 | 3622 | int instance_end = align_size_up(notaligned_nonstatic_fields_end, wordSize); |
aoqi@0 | 3623 | int static_fields_end = align_size_up(next_static_byte_offset, wordSize); |
aoqi@0 | 3624 | |
aoqi@0 | 3625 | int static_field_size = (static_fields_end - |
aoqi@0 | 3626 | InstanceMirrorKlass::offset_of_static_fields()) / wordSize; |
aoqi@0 | 3627 | nonstatic_field_size = nonstatic_field_size + |
aoqi@0 | 3628 | (nonstatic_fields_end - nonstatic_fields_start) / heapOopSize; |
aoqi@0 | 3629 | |
aoqi@0 | 3630 | int instance_size = align_object_size(instance_end / wordSize); |
aoqi@0 | 3631 | |
aoqi@0 | 3632 | assert(instance_size == align_object_size(align_size_up( |
aoqi@0 | 3633 | (instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize), |
aoqi@0 | 3634 | wordSize) / wordSize), "consistent layout helper value"); |
aoqi@0 | 3635 | |
aoqi@0 | 3636 | // Invariant: nonstatic_field end/start should only change if there are |
aoqi@0 | 3637 | // nonstatic fields in the class, or if the class is contended. We compare |
aoqi@0 | 3638 | // against the non-aligned value, so that end alignment will not fail the |
aoqi@0 | 3639 | // assert without actually having the fields. |
aoqi@0 | 3640 | assert((notaligned_nonstatic_fields_end == nonstatic_fields_start) || |
aoqi@0 | 3641 | is_contended_class || |
aoqi@0 | 3642 | (nonstatic_fields_count > 0), "double-check nonstatic start/end"); |
aoqi@0 | 3643 | |
aoqi@0 | 3644 | // Number of non-static oop map blocks allocated at end of klass. |
aoqi@0 | 3645 | const unsigned int total_oop_map_count = |
aoqi@0 | 3646 | compute_oop_map_count(_super_klass, nonstatic_oop_map_count, |
aoqi@0 | 3647 | first_nonstatic_oop_offset); |
aoqi@0 | 3648 | |
aoqi@0 | 3649 | #ifndef PRODUCT |
aoqi@0 | 3650 | if (PrintFieldLayout) { |
aoqi@0 | 3651 | print_field_layout(_class_name, |
aoqi@0 | 3652 | _fields, |
aoqi@0 | 3653 | _cp, |
aoqi@0 | 3654 | instance_size, |
aoqi@0 | 3655 | nonstatic_fields_start, |
aoqi@0 | 3656 | nonstatic_fields_end, |
aoqi@0 | 3657 | static_fields_end); |
aoqi@0 | 3658 | } |
aoqi@0 | 3659 | |
aoqi@0 | 3660 | #endif |
aoqi@0 | 3661 | // Pass back information needed for InstanceKlass creation |
aoqi@0 | 3662 | info->nonstatic_oop_offsets = nonstatic_oop_offsets; |
aoqi@0 | 3663 | info->nonstatic_oop_counts = nonstatic_oop_counts; |
aoqi@0 | 3664 | info->nonstatic_oop_map_count = nonstatic_oop_map_count; |
aoqi@0 | 3665 | info->total_oop_map_count = total_oop_map_count; |
aoqi@0 | 3666 | info->instance_size = instance_size; |
aoqi@0 | 3667 | info->static_field_size = static_field_size; |
aoqi@0 | 3668 | info->nonstatic_field_size = nonstatic_field_size; |
aoqi@0 | 3669 | info->has_nonstatic_fields = has_nonstatic_fields; |
aoqi@0 | 3670 | } |
aoqi@0 | 3671 | |
aoqi@0 | 3672 | |
aoqi@0 | 3673 | instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
aoqi@0 | 3674 | ClassLoaderData* loader_data, |
aoqi@0 | 3675 | Handle protection_domain, |
aoqi@0 | 3676 | KlassHandle host_klass, |
aoqi@0 | 3677 | GrowableArray<Handle>* cp_patches, |
aoqi@0 | 3678 | TempNewSymbol& parsed_name, |
aoqi@0 | 3679 | bool verify, |
aoqi@0 | 3680 | TRAPS) { |
aoqi@0 | 3681 | |
aoqi@0 | 3682 | // When a retransformable agent is attached, JVMTI caches the |
aoqi@0 | 3683 | // class bytes that existed before the first retransformation. |
aoqi@0 | 3684 | // If RedefineClasses() was used before the retransformable |
aoqi@0 | 3685 | // agent attached, then the cached class bytes may not be the |
aoqi@0 | 3686 | // original class bytes. |
aoqi@0 | 3687 | JvmtiCachedClassFileData *cached_class_file = NULL; |
aoqi@0 | 3688 | Handle class_loader(THREAD, loader_data->class_loader()); |
aoqi@0 | 3689 | bool has_default_methods = false; |
aoqi@0 | 3690 | ResourceMark rm(THREAD); |
aoqi@0 | 3691 | |
aoqi@0 | 3692 | ClassFileStream* cfs = stream(); |
aoqi@0 | 3693 | // Timing |
aoqi@0 | 3694 | assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
aoqi@0 | 3695 | JavaThread* jt = (JavaThread*) THREAD; |
aoqi@0 | 3696 | |
aoqi@0 | 3697 | PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
aoqi@0 | 3698 | ClassLoader::perf_class_parse_selftime(), |
aoqi@0 | 3699 | NULL, |
aoqi@0 | 3700 | jt->get_thread_stat()->perf_recursion_counts_addr(), |
aoqi@0 | 3701 | jt->get_thread_stat()->perf_timers_addr(), |
aoqi@0 | 3702 | PerfClassTraceTime::PARSE_CLASS); |
aoqi@0 | 3703 | |
aoqi@0 | 3704 | init_parsed_class_attributes(loader_data); |
aoqi@0 | 3705 | |
aoqi@0 | 3706 | if (JvmtiExport::should_post_class_file_load_hook()) { |
aoqi@0 | 3707 | // Get the cached class file bytes (if any) from the class that |
aoqi@0 | 3708 | // is being redefined or retransformed. We use jvmti_thread_state() |
aoqi@0 | 3709 | // instead of JvmtiThreadState::state_for(jt) so we don't allocate |
aoqi@0 | 3710 | // a JvmtiThreadState any earlier than necessary. This will help |
aoqi@0 | 3711 | // avoid the bug described by 7126851. |
aoqi@0 | 3712 | JvmtiThreadState *state = jt->jvmti_thread_state(); |
aoqi@0 | 3713 | if (state != NULL) { |
aoqi@0 | 3714 | KlassHandle *h_class_being_redefined = |
aoqi@0 | 3715 | state->get_class_being_redefined(); |
aoqi@0 | 3716 | if (h_class_being_redefined != NULL) { |
aoqi@0 | 3717 | instanceKlassHandle ikh_class_being_redefined = |
aoqi@0 | 3718 | instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
aoqi@0 | 3719 | cached_class_file = ikh_class_being_redefined->get_cached_class_file(); |
aoqi@0 | 3720 | } |
aoqi@0 | 3721 | } |
aoqi@0 | 3722 | |
aoqi@0 | 3723 | unsigned char* ptr = cfs->buffer(); |
aoqi@0 | 3724 | unsigned char* end_ptr = cfs->buffer() + cfs->length(); |
aoqi@0 | 3725 | |
aoqi@0 | 3726 | JvmtiExport::post_class_file_load_hook(name, class_loader(), protection_domain, |
aoqi@0 | 3727 | &ptr, &end_ptr, &cached_class_file); |
aoqi@0 | 3728 | |
aoqi@0 | 3729 | if (ptr != cfs->buffer()) { |
aoqi@0 | 3730 | // JVMTI agent has modified class file data. |
aoqi@0 | 3731 | // Set new class file stream using JVMTI agent modified |
aoqi@0 | 3732 | // class file data. |
aoqi@0 | 3733 | cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); |
aoqi@0 | 3734 | set_stream(cfs); |
aoqi@0 | 3735 | } |
aoqi@0 | 3736 | } |
aoqi@0 | 3737 | |
aoqi@0 | 3738 | _host_klass = host_klass; |
aoqi@0 | 3739 | _cp_patches = cp_patches; |
aoqi@0 | 3740 | |
aoqi@0 | 3741 | instanceKlassHandle nullHandle; |
aoqi@0 | 3742 | |
aoqi@0 | 3743 | // Figure out whether we can skip format checking (matching classic VM behavior) |
aoqi@0 | 3744 | _need_verify = Verifier::should_verify_for(class_loader(), verify); |
aoqi@0 | 3745 | |
aoqi@0 | 3746 | // Set the verify flag in stream |
aoqi@0 | 3747 | cfs->set_verify(_need_verify); |
aoqi@0 | 3748 | |
aoqi@0 | 3749 | // Save the class file name for easier error message printing. |
aoqi@0 | 3750 | _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
aoqi@0 | 3751 | |
aoqi@0 | 3752 | cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor |
aoqi@0 | 3753 | // Magic value |
aoqi@0 | 3754 | u4 magic = cfs->get_u4_fast(); |
aoqi@0 | 3755 | guarantee_property(magic == JAVA_CLASSFILE_MAGIC, |
aoqi@0 | 3756 | "Incompatible magic value %u in class file %s", |
aoqi@0 | 3757 | magic, CHECK_(nullHandle)); |
aoqi@0 | 3758 | |
aoqi@0 | 3759 | // Version numbers |
aoqi@0 | 3760 | u2 minor_version = cfs->get_u2_fast(); |
aoqi@0 | 3761 | u2 major_version = cfs->get_u2_fast(); |
aoqi@0 | 3762 | |
aoqi@0 | 3763 | // Check version numbers - we check this even with verifier off |
aoqi@0 | 3764 | if (!is_supported_version(major_version, minor_version)) { |
aoqi@0 | 3765 | if (name == NULL) { |
aoqi@0 | 3766 | Exceptions::fthrow( |
aoqi@0 | 3767 | THREAD_AND_LOCATION, |
aoqi@0 | 3768 | vmSymbols::java_lang_UnsupportedClassVersionError(), |
aoqi@0 | 3769 | "Unsupported class file version %u.%u, " |
aoqi@0 | 3770 | "this version of the Java Runtime only recognizes class file versions up to %u.%u", |
aoqi@0 | 3771 | major_version, |
aoqi@0 | 3772 | minor_version, |
aoqi@0 | 3773 | JAVA_MAX_SUPPORTED_VERSION, |
aoqi@0 | 3774 | JAVA_MAX_SUPPORTED_MINOR_VERSION); |
aoqi@0 | 3775 | } else { |
aoqi@0 | 3776 | ResourceMark rm(THREAD); |
aoqi@0 | 3777 | Exceptions::fthrow( |
aoqi@0 | 3778 | THREAD_AND_LOCATION, |
aoqi@0 | 3779 | vmSymbols::java_lang_UnsupportedClassVersionError(), |
aoqi@0 | 3780 | "%s has been compiled by a more recent version of the Java Runtime (class file version %u.%u), " |
aoqi@0 | 3781 | "this version of the Java Runtime only recognizes class file versions up to %u.%u", |
aoqi@0 | 3782 | name->as_C_string(), |
aoqi@0 | 3783 | major_version, |
aoqi@0 | 3784 | minor_version, |
aoqi@0 | 3785 | JAVA_MAX_SUPPORTED_VERSION, |
aoqi@0 | 3786 | JAVA_MAX_SUPPORTED_MINOR_VERSION); |
aoqi@0 | 3787 | } |
aoqi@0 | 3788 | return nullHandle; |
aoqi@0 | 3789 | } |
aoqi@0 | 3790 | |
aoqi@0 | 3791 | _major_version = major_version; |
aoqi@0 | 3792 | _minor_version = minor_version; |
aoqi@0 | 3793 | |
aoqi@0 | 3794 | |
aoqi@0 | 3795 | // Check if verification needs to be relaxed for this class file |
aoqi@0 | 3796 | // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) |
aoqi@0 | 3797 | _relax_verify = Verifier::relax_verify_for(class_loader()); |
aoqi@0 | 3798 | |
aoqi@0 | 3799 | // Constant pool |
aoqi@0 | 3800 | constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle)); |
aoqi@0 | 3801 | |
aoqi@0 | 3802 | int cp_size = cp->length(); |
aoqi@0 | 3803 | |
aoqi@0 | 3804 | cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
aoqi@0 | 3805 | |
aoqi@0 | 3806 | // Access flags |
aoqi@0 | 3807 | AccessFlags access_flags; |
aoqi@0 | 3808 | jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; |
aoqi@0 | 3809 | |
aoqi@0 | 3810 | if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { |
aoqi@0 | 3811 | // Set abstract bit for old class files for backward compatibility |
aoqi@0 | 3812 | flags |= JVM_ACC_ABSTRACT; |
aoqi@0 | 3813 | } |
aoqi@0 | 3814 | verify_legal_class_modifiers(flags, CHECK_(nullHandle)); |
aoqi@0 | 3815 | access_flags.set_flags(flags); |
aoqi@0 | 3816 | |
aoqi@0 | 3817 | // This class and superclass |
aoqi@0 | 3818 | u2 this_class_index = cfs->get_u2_fast(); |
aoqi@0 | 3819 | check_property( |
aoqi@0 | 3820 | valid_cp_range(this_class_index, cp_size) && |
aoqi@0 | 3821 | cp->tag_at(this_class_index).is_unresolved_klass(), |
aoqi@0 | 3822 | "Invalid this class index %u in constant pool in class file %s", |
aoqi@0 | 3823 | this_class_index, CHECK_(nullHandle)); |
aoqi@0 | 3824 | |
aoqi@0 | 3825 | Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
aoqi@0 | 3826 | assert(class_name != NULL, "class_name can't be null"); |
aoqi@0 | 3827 | |
aoqi@0 | 3828 | // It's important to set parsed_name *before* resolving the super class. |
aoqi@0 | 3829 | // (it's used for cleanup by the caller if parsing fails) |
aoqi@0 | 3830 | parsed_name = class_name; |
aoqi@0 | 3831 | // parsed_name is returned and can be used if there's an error, so add to |
aoqi@0 | 3832 | // its reference count. Caller will decrement the refcount. |
aoqi@0 | 3833 | parsed_name->increment_refcount(); |
aoqi@0 | 3834 | |
aoqi@0 | 3835 | // Update _class_name which could be null previously to be class_name |
aoqi@0 | 3836 | _class_name = class_name; |
aoqi@0 | 3837 | |
aoqi@0 | 3838 | // Don't need to check whether this class name is legal or not. |
aoqi@0 | 3839 | // It has been checked when constant pool is parsed. |
aoqi@0 | 3840 | // However, make sure it is not an array type. |
aoqi@0 | 3841 | if (_need_verify) { |
aoqi@0 | 3842 | guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, |
aoqi@0 | 3843 | "Bad class name in class file %s", |
aoqi@0 | 3844 | CHECK_(nullHandle)); |
aoqi@0 | 3845 | } |
aoqi@0 | 3846 | |
aoqi@0 | 3847 | Klass* preserve_this_klass; // for storing result across HandleMark |
aoqi@0 | 3848 | |
aoqi@0 | 3849 | // release all handles when parsing is done |
aoqi@0 | 3850 | { HandleMark hm(THREAD); |
aoqi@0 | 3851 | |
aoqi@0 | 3852 | // Checks if name in class file matches requested name |
aoqi@0 | 3853 | if (name != NULL && class_name != name) { |
aoqi@0 | 3854 | ResourceMark rm(THREAD); |
aoqi@0 | 3855 | Exceptions::fthrow( |
aoqi@0 | 3856 | THREAD_AND_LOCATION, |
aoqi@0 | 3857 | vmSymbols::java_lang_NoClassDefFoundError(), |
aoqi@0 | 3858 | "%s (wrong name: %s)", |
aoqi@0 | 3859 | name->as_C_string(), |
aoqi@0 | 3860 | class_name->as_C_string() |
aoqi@0 | 3861 | ); |
aoqi@0 | 3862 | return nullHandle; |
aoqi@0 | 3863 | } |
aoqi@0 | 3864 | |
aoqi@0 | 3865 | if (TraceClassLoadingPreorder) { |
aoqi@0 | 3866 | tty->print("[Loading %s", (name != NULL) ? name->as_klass_external_name() : "NoName"); |
aoqi@0 | 3867 | if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
aoqi@0 | 3868 | tty->print_cr("]"); |
aoqi@0 | 3869 | } |
aoqi@0 | 3870 | |
aoqi@0 | 3871 | u2 super_class_index = cfs->get_u2_fast(); |
aoqi@0 | 3872 | instanceKlassHandle super_klass = parse_super_class(super_class_index, |
aoqi@0 | 3873 | CHECK_NULL); |
aoqi@0 | 3874 | |
aoqi@0 | 3875 | // Interfaces |
aoqi@0 | 3876 | u2 itfs_len = cfs->get_u2_fast(); |
aoqi@0 | 3877 | Array<Klass*>* local_interfaces = |
aoqi@0 | 3878 | parse_interfaces(itfs_len, protection_domain, _class_name, |
aoqi@0 | 3879 | &has_default_methods, CHECK_(nullHandle)); |
aoqi@0 | 3880 | |
aoqi@0 | 3881 | u2 java_fields_count = 0; |
aoqi@0 | 3882 | // Fields (offsets are filled in later) |
aoqi@0 | 3883 | FieldAllocationCount fac; |
aoqi@0 | 3884 | Array<u2>* fields = parse_fields(class_name, |
aoqi@0 | 3885 | access_flags.is_interface(), |
aoqi@0 | 3886 | &fac, &java_fields_count, |
aoqi@0 | 3887 | CHECK_(nullHandle)); |
aoqi@0 | 3888 | // Methods |
aoqi@0 | 3889 | bool has_final_method = false; |
aoqi@0 | 3890 | AccessFlags promoted_flags; |
aoqi@0 | 3891 | promoted_flags.set_flags(0); |
aoqi@0 | 3892 | Array<Method*>* methods = parse_methods(access_flags.is_interface(), |
aoqi@0 | 3893 | &promoted_flags, |
aoqi@0 | 3894 | &has_final_method, |
aoqi@0 | 3895 | &has_default_methods, |
aoqi@0 | 3896 | CHECK_(nullHandle)); |
aoqi@0 | 3897 | |
aoqi@0 | 3898 | // Additional attributes |
aoqi@0 | 3899 | ClassAnnotationCollector parsed_annotations; |
aoqi@0 | 3900 | parse_classfile_attributes(&parsed_annotations, CHECK_(nullHandle)); |
aoqi@0 | 3901 | |
aoqi@0 | 3902 | // Make sure this is the end of class file stream |
aoqi@0 | 3903 | guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
aoqi@0 | 3904 | |
aoqi@0 | 3905 | // We check super class after class file is parsed and format is checked |
aoqi@0 | 3906 | if (super_class_index > 0 && super_klass.is_null()) { |
aoqi@0 | 3907 | Symbol* sk = cp->klass_name_at(super_class_index); |
aoqi@0 | 3908 | if (access_flags.is_interface()) { |
aoqi@0 | 3909 | // Before attempting to resolve the superclass, check for class format |
aoqi@0 | 3910 | // errors not checked yet. |
aoqi@0 | 3911 | guarantee_property(sk == vmSymbols::java_lang_Object(), |
aoqi@0 | 3912 | "Interfaces must have java.lang.Object as superclass in class file %s", |
aoqi@0 | 3913 | CHECK_(nullHandle)); |
aoqi@0 | 3914 | } |
aoqi@0 | 3915 | Klass* k = SystemDictionary::resolve_super_or_fail(class_name, sk, |
aoqi@0 | 3916 | class_loader, |
aoqi@0 | 3917 | protection_domain, |
aoqi@0 | 3918 | true, |
aoqi@0 | 3919 | CHECK_(nullHandle)); |
aoqi@0 | 3920 | |
aoqi@0 | 3921 | KlassHandle kh (THREAD, k); |
aoqi@0 | 3922 | super_klass = instanceKlassHandle(THREAD, kh()); |
aoqi@0 | 3923 | } |
aoqi@0 | 3924 | if (super_klass.not_null()) { |
aoqi@0 | 3925 | |
aoqi@0 | 3926 | if (super_klass->has_default_methods()) { |
aoqi@0 | 3927 | has_default_methods = true; |
aoqi@0 | 3928 | } |
aoqi@0 | 3929 | |
aoqi@0 | 3930 | if (super_klass->is_interface()) { |
aoqi@0 | 3931 | ResourceMark rm(THREAD); |
aoqi@0 | 3932 | Exceptions::fthrow( |
aoqi@0 | 3933 | THREAD_AND_LOCATION, |
aoqi@0 | 3934 | vmSymbols::java_lang_IncompatibleClassChangeError(), |
aoqi@0 | 3935 | "class %s has interface %s as super class", |
aoqi@0 | 3936 | class_name->as_klass_external_name(), |
aoqi@0 | 3937 | super_klass->external_name() |
aoqi@0 | 3938 | ); |
aoqi@0 | 3939 | return nullHandle; |
aoqi@0 | 3940 | } |
aoqi@0 | 3941 | // Make sure super class is not final |
aoqi@0 | 3942 | if (super_klass->is_final()) { |
aoqi@0 | 3943 | THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); |
aoqi@0 | 3944 | } |
aoqi@0 | 3945 | } |
aoqi@0 | 3946 | |
aoqi@0 | 3947 | // save super klass for error handling. |
aoqi@0 | 3948 | _super_klass = super_klass; |
aoqi@0 | 3949 | |
aoqi@0 | 3950 | // Compute the transitive list of all unique interfaces implemented by this class |
aoqi@0 | 3951 | _transitive_interfaces = |
aoqi@0 | 3952 | compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); |
aoqi@0 | 3953 | |
aoqi@0 | 3954 | // sort methods |
aoqi@0 | 3955 | intArray* method_ordering = sort_methods(methods); |
aoqi@0 | 3956 | |
aoqi@0 | 3957 | // promote flags from parse_methods() to the klass' flags |
aoqi@0 | 3958 | access_flags.add_promoted_flags(promoted_flags.as_int()); |
aoqi@0 | 3959 | |
aoqi@0 | 3960 | // Size of Java vtable (in words) |
aoqi@0 | 3961 | int vtable_size = 0; |
aoqi@0 | 3962 | int itable_size = 0; |
aoqi@0 | 3963 | int num_miranda_methods = 0; |
aoqi@0 | 3964 | |
aoqi@0 | 3965 | GrowableArray<Method*> all_mirandas(20); |
aoqi@0 | 3966 | |
aoqi@0 | 3967 | klassVtable::compute_vtable_size_and_num_mirandas( |
aoqi@0 | 3968 | &vtable_size, &num_miranda_methods, &all_mirandas, super_klass(), methods, |
aoqi@0 | 3969 | access_flags, class_loader, class_name, local_interfaces, |
aoqi@0 | 3970 | CHECK_(nullHandle)); |
aoqi@0 | 3971 | |
aoqi@0 | 3972 | // Size of Java itable (in words) |
aoqi@0 | 3973 | itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(_transitive_interfaces); |
aoqi@0 | 3974 | |
aoqi@0 | 3975 | FieldLayoutInfo info; |
aoqi@0 | 3976 | layout_fields(class_loader, &fac, &parsed_annotations, &info, CHECK_NULL); |
aoqi@0 | 3977 | |
aoqi@0 | 3978 | int total_oop_map_size2 = |
aoqi@0 | 3979 | InstanceKlass::nonstatic_oop_map_size(info.total_oop_map_count); |
aoqi@0 | 3980 | |
aoqi@0 | 3981 | // Compute reference type |
aoqi@0 | 3982 | ReferenceType rt; |
aoqi@0 | 3983 | if (super_klass() == NULL) { |
aoqi@0 | 3984 | rt = REF_NONE; |
aoqi@0 | 3985 | } else { |
aoqi@0 | 3986 | rt = super_klass->reference_type(); |
aoqi@0 | 3987 | } |
aoqi@0 | 3988 | |
aoqi@0 | 3989 | // We can now create the basic Klass* for this klass |
aoqi@0 | 3990 | _klass = InstanceKlass::allocate_instance_klass(loader_data, |
aoqi@0 | 3991 | vtable_size, |
aoqi@0 | 3992 | itable_size, |
aoqi@0 | 3993 | info.static_field_size, |
aoqi@0 | 3994 | total_oop_map_size2, |
aoqi@0 | 3995 | rt, |
aoqi@0 | 3996 | access_flags, |
aoqi@0 | 3997 | name, |
aoqi@0 | 3998 | super_klass(), |
aoqi@0 | 3999 | !host_klass.is_null(), |
aoqi@0 | 4000 | CHECK_(nullHandle)); |
aoqi@0 | 4001 | instanceKlassHandle this_klass (THREAD, _klass); |
aoqi@0 | 4002 | |
aoqi@0 | 4003 | assert(this_klass->static_field_size() == info.static_field_size, "sanity"); |
aoqi@0 | 4004 | assert(this_klass->nonstatic_oop_map_count() == info.total_oop_map_count, |
aoqi@0 | 4005 | "sanity"); |
aoqi@0 | 4006 | |
aoqi@0 | 4007 | // Fill in information already parsed |
aoqi@0 | 4008 | this_klass->set_should_verify_class(verify); |
aoqi@0 | 4009 | jint lh = Klass::instance_layout_helper(info.instance_size, false); |
aoqi@0 | 4010 | this_klass->set_layout_helper(lh); |
aoqi@0 | 4011 | assert(this_klass->oop_is_instance(), "layout is correct"); |
aoqi@0 | 4012 | assert(this_klass->size_helper() == info.instance_size, "correct size_helper"); |
aoqi@0 | 4013 | // Not yet: supers are done below to support the new subtype-checking fields |
aoqi@0 | 4014 | //this_klass->set_super(super_klass()); |
aoqi@0 | 4015 | this_klass->set_class_loader_data(loader_data); |
aoqi@0 | 4016 | this_klass->set_nonstatic_field_size(info.nonstatic_field_size); |
aoqi@0 | 4017 | this_klass->set_has_nonstatic_fields(info.has_nonstatic_fields); |
aoqi@0 | 4018 | this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
aoqi@0 | 4019 | |
aoqi@0 | 4020 | apply_parsed_class_metadata(this_klass, java_fields_count, CHECK_NULL); |
aoqi@0 | 4021 | |
aoqi@0 | 4022 | if (has_final_method) { |
aoqi@0 | 4023 | this_klass->set_has_final_method(); |
aoqi@0 | 4024 | } |
aoqi@0 | 4025 | this_klass->copy_method_ordering(method_ordering, CHECK_NULL); |
aoqi@0 | 4026 | // The InstanceKlass::_methods_jmethod_ids cache |
aoqi@0 | 4027 | // is managed on the assumption that the initial cache |
aoqi@0 | 4028 | // size is equal to the number of methods in the class. If |
aoqi@0 | 4029 | // that changes, then InstanceKlass::idnum_can_increment() |
aoqi@0 | 4030 | // has to be changed accordingly. |
aoqi@0 | 4031 | this_klass->set_initial_method_idnum(methods->length()); |
aoqi@0 | 4032 | this_klass->set_name(cp->klass_name_at(this_class_index)); |
aoqi@0 | 4033 | if (is_anonymous()) // I am well known to myself |
aoqi@0 | 4034 | cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
aoqi@0 | 4035 | |
aoqi@0 | 4036 | this_klass->set_minor_version(minor_version); |
aoqi@0 | 4037 | this_klass->set_major_version(major_version); |
aoqi@0 | 4038 | this_klass->set_has_default_methods(has_default_methods); |
aoqi@0 | 4039 | |
aoqi@0 | 4040 | if (!host_klass.is_null()) { |
aoqi@0 | 4041 | assert (this_klass->is_anonymous(), "should be the same"); |
aoqi@0 | 4042 | this_klass->set_host_klass(host_klass()); |
aoqi@0 | 4043 | } |
aoqi@0 | 4044 | |
aoqi@0 | 4045 | // Set up Method*::intrinsic_id as soon as we know the names of methods. |
aoqi@0 | 4046 | // (We used to do this lazily, but now we query it in Rewriter, |
aoqi@0 | 4047 | // which is eagerly done for every method, so we might as well do it now, |
aoqi@0 | 4048 | // when everything is fresh in memory.) |
aoqi@0 | 4049 | if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
aoqi@0 | 4050 | for (int j = 0; j < methods->length(); j++) { |
aoqi@0 | 4051 | methods->at(j)->init_intrinsic_id(); |
aoqi@0 | 4052 | } |
aoqi@0 | 4053 | } |
aoqi@0 | 4054 | |
aoqi@0 | 4055 | if (cached_class_file != NULL) { |
aoqi@0 | 4056 | // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
aoqi@0 | 4057 | this_klass->set_cached_class_file(cached_class_file); |
aoqi@0 | 4058 | } |
aoqi@0 | 4059 | |
aoqi@0 | 4060 | // Fill in field values obtained by parse_classfile_attributes |
aoqi@0 | 4061 | if (parsed_annotations.has_any_annotations()) |
aoqi@0 | 4062 | parsed_annotations.apply_to(this_klass); |
aoqi@0 | 4063 | apply_parsed_class_attributes(this_klass); |
aoqi@0 | 4064 | |
aoqi@0 | 4065 | // Miranda methods |
aoqi@0 | 4066 | if ((num_miranda_methods > 0) || |
aoqi@0 | 4067 | // if this class introduced new miranda methods or |
aoqi@0 | 4068 | (super_klass.not_null() && (super_klass->has_miranda_methods())) |
aoqi@0 | 4069 | // super class exists and this class inherited miranda methods |
aoqi@0 | 4070 | ) { |
aoqi@0 | 4071 | this_klass->set_has_miranda_methods(); // then set a flag |
aoqi@0 | 4072 | } |
aoqi@0 | 4073 | |
aoqi@0 | 4074 | // Fill in information needed to compute superclasses. |
aoqi@0 | 4075 | this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); |
aoqi@0 | 4076 | |
aoqi@0 | 4077 | // Initialize itable offset tables |
aoqi@0 | 4078 | klassItable::setup_itable_offset_table(this_klass); |
aoqi@0 | 4079 | |
aoqi@0 | 4080 | // Compute transitive closure of interfaces this class implements |
aoqi@0 | 4081 | // Do final class setup |
aoqi@0 | 4082 | fill_oop_maps(this_klass, info.nonstatic_oop_map_count, info.nonstatic_oop_offsets, info.nonstatic_oop_counts); |
aoqi@0 | 4083 | |
aoqi@0 | 4084 | // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
aoqi@0 | 4085 | set_precomputed_flags(this_klass); |
aoqi@0 | 4086 | |
aoqi@0 | 4087 | // reinitialize modifiers, using the InnerClasses attribute |
aoqi@0 | 4088 | int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); |
aoqi@0 | 4089 | this_klass->set_modifier_flags(computed_modifiers); |
aoqi@0 | 4090 | |
aoqi@0 | 4091 | // check if this class can access its super class |
aoqi@0 | 4092 | check_super_class_access(this_klass, CHECK_(nullHandle)); |
aoqi@0 | 4093 | |
aoqi@0 | 4094 | // check if this class can access its superinterfaces |
aoqi@0 | 4095 | check_super_interface_access(this_klass, CHECK_(nullHandle)); |
aoqi@0 | 4096 | |
aoqi@0 | 4097 | // check if this class overrides any final method |
aoqi@0 | 4098 | check_final_method_override(this_klass, CHECK_(nullHandle)); |
aoqi@0 | 4099 | |
aoqi@0 | 4100 | // check that if this class is an interface then it doesn't have static methods |
aoqi@0 | 4101 | if (this_klass->is_interface()) { |
aoqi@0 | 4102 | /* An interface in a JAVA 8 classfile can be static */ |
aoqi@0 | 4103 | if (_major_version < JAVA_8_VERSION) { |
aoqi@0 | 4104 | check_illegal_static_method(this_klass, CHECK_(nullHandle)); |
aoqi@0 | 4105 | } |
aoqi@0 | 4106 | } |
aoqi@0 | 4107 | |
aoqi@0 | 4108 | // Allocate mirror and initialize static fields |
aoqi@0 | 4109 | java_lang_Class::create_mirror(this_klass, protection_domain, CHECK_(nullHandle)); |
aoqi@0 | 4110 | |
aoqi@0 | 4111 | |
aoqi@0 | 4112 | // Generate any default methods - default methods are interface methods |
aoqi@0 | 4113 | // that have a default implementation. This is new with Lambda project. |
aoqi@0 | 4114 | if (has_default_methods ) { |
aoqi@0 | 4115 | DefaultMethods::generate_default_methods( |
aoqi@0 | 4116 | this_klass(), &all_mirandas, CHECK_(nullHandle)); |
aoqi@0 | 4117 | } |
aoqi@0 | 4118 | |
aoqi@0 | 4119 | // Update the loader_data graph. |
aoqi@0 | 4120 | record_defined_class_dependencies(this_klass, CHECK_NULL); |
aoqi@0 | 4121 | |
aoqi@0 | 4122 | ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
aoqi@0 | 4123 | false /* not shared class */); |
aoqi@0 | 4124 | |
aoqi@0 | 4125 | if (TraceClassLoading) { |
aoqi@0 | 4126 | ResourceMark rm; |
aoqi@0 | 4127 | // print in a single call to reduce interleaving of output |
aoqi@0 | 4128 | if (cfs->source() != NULL) { |
aoqi@0 | 4129 | tty->print("[Loaded %s from %s]\n", this_klass->external_name(), |
aoqi@0 | 4130 | cfs->source()); |
aoqi@0 | 4131 | } else if (class_loader.is_null()) { |
aoqi@0 | 4132 | if (THREAD->is_Java_thread()) { |
aoqi@0 | 4133 | Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
aoqi@0 | 4134 | tty->print("[Loaded %s by instance of %s]\n", |
aoqi@0 | 4135 | this_klass->external_name(), |
aoqi@0 | 4136 | InstanceKlass::cast(caller)->external_name()); |
aoqi@0 | 4137 | } else { |
aoqi@0 | 4138 | tty->print("[Loaded %s]\n", this_klass->external_name()); |
aoqi@0 | 4139 | } |
aoqi@0 | 4140 | } else { |
aoqi@0 | 4141 | tty->print("[Loaded %s from %s]\n", this_klass->external_name(), |
aoqi@0 | 4142 | InstanceKlass::cast(class_loader->klass())->external_name()); |
aoqi@0 | 4143 | } |
aoqi@0 | 4144 | } |
aoqi@0 | 4145 | |
aoqi@0 | 4146 | if (TraceClassResolution) { |
aoqi@0 | 4147 | ResourceMark rm; |
aoqi@0 | 4148 | // print out the superclass. |
aoqi@0 | 4149 | const char * from = this_klass()->external_name(); |
aoqi@0 | 4150 | if (this_klass->java_super() != NULL) { |
aoqi@0 | 4151 | tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
aoqi@0 | 4152 | } |
aoqi@0 | 4153 | // print out each of the interface classes referred to by this class. |
aoqi@0 | 4154 | Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
aoqi@0 | 4155 | if (local_interfaces != NULL) { |
aoqi@0 | 4156 | int length = local_interfaces->length(); |
aoqi@0 | 4157 | for (int i = 0; i < length; i++) { |
aoqi@0 | 4158 | Klass* k = local_interfaces->at(i); |
aoqi@0 | 4159 | InstanceKlass* to_class = InstanceKlass::cast(k); |
aoqi@0 | 4160 | const char * to = to_class->external_name(); |
aoqi@0 | 4161 | tty->print("RESOLVE %s %s (interface)\n", from, to); |
aoqi@0 | 4162 | } |
aoqi@0 | 4163 | } |
aoqi@0 | 4164 | } |
aoqi@0 | 4165 | |
aoqi@0 | 4166 | // preserve result across HandleMark |
aoqi@0 | 4167 | preserve_this_klass = this_klass(); |
aoqi@0 | 4168 | } |
aoqi@0 | 4169 | |
aoqi@0 | 4170 | // Create new handle outside HandleMark (might be needed for |
aoqi@0 | 4171 | // Extended Class Redefinition) |
aoqi@0 | 4172 | instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
aoqi@0 | 4173 | debug_only(this_klass->verify();) |
aoqi@0 | 4174 | |
aoqi@0 | 4175 | // Clear class if no error has occurred so destructor doesn't deallocate it |
aoqi@0 | 4176 | _klass = NULL; |
aoqi@0 | 4177 | return this_klass; |
aoqi@0 | 4178 | } |
aoqi@0 | 4179 | |
aoqi@0 | 4180 | // Destructor to clean up if there's an error |
aoqi@0 | 4181 | ClassFileParser::~ClassFileParser() { |
aoqi@0 | 4182 | MetadataFactory::free_metadata(_loader_data, _cp); |
aoqi@0 | 4183 | MetadataFactory::free_array<u2>(_loader_data, _fields); |
aoqi@0 | 4184 | |
aoqi@0 | 4185 | // Free methods |
aoqi@0 | 4186 | InstanceKlass::deallocate_methods(_loader_data, _methods); |
aoqi@0 | 4187 | |
aoqi@0 | 4188 | // beware of the Universe::empty_blah_array!! |
aoqi@0 | 4189 | if (_inner_classes != Universe::the_empty_short_array()) { |
aoqi@0 | 4190 | MetadataFactory::free_array<u2>(_loader_data, _inner_classes); |
aoqi@0 | 4191 | } |
aoqi@0 | 4192 | |
aoqi@0 | 4193 | // Free interfaces |
aoqi@0 | 4194 | InstanceKlass::deallocate_interfaces(_loader_data, _super_klass(), |
aoqi@0 | 4195 | _local_interfaces, _transitive_interfaces); |
aoqi@0 | 4196 | |
aoqi@0 | 4197 | MetadataFactory::free_array<u1>(_loader_data, _annotations); |
aoqi@0 | 4198 | MetadataFactory::free_array<u1>(_loader_data, _type_annotations); |
aoqi@0 | 4199 | Annotations::free_contents(_loader_data, _fields_annotations); |
aoqi@0 | 4200 | Annotations::free_contents(_loader_data, _fields_type_annotations); |
aoqi@0 | 4201 | |
aoqi@0 | 4202 | clear_class_metadata(); |
aoqi@0 | 4203 | |
aoqi@0 | 4204 | // deallocate the klass if already created. Don't directly deallocate, but add |
aoqi@0 | 4205 | // to the deallocate list so that the klass is removed from the CLD::_klasses list |
aoqi@0 | 4206 | // at a safepoint. |
aoqi@0 | 4207 | if (_klass != NULL) { |
aoqi@0 | 4208 | _loader_data->add_to_deallocate_list(_klass); |
aoqi@0 | 4209 | } |
aoqi@0 | 4210 | _klass = NULL; |
aoqi@0 | 4211 | } |
aoqi@0 | 4212 | |
aoqi@0 | 4213 | void ClassFileParser::print_field_layout(Symbol* name, |
aoqi@0 | 4214 | Array<u2>* fields, |
aoqi@0 | 4215 | constantPoolHandle cp, |
aoqi@0 | 4216 | int instance_size, |
aoqi@0 | 4217 | int instance_fields_start, |
aoqi@0 | 4218 | int instance_fields_end, |
aoqi@0 | 4219 | int static_fields_end) { |
aoqi@0 | 4220 | tty->print("%s: field layout\n", name->as_klass_external_name()); |
aoqi@0 | 4221 | tty->print(" @%3d %s\n", instance_fields_start, "--- instance fields start ---"); |
aoqi@0 | 4222 | for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
aoqi@0 | 4223 | if (!fs.access_flags().is_static()) { |
aoqi@0 | 4224 | tty->print(" @%3d \"%s\" %s\n", |
aoqi@0 | 4225 | fs.offset(), |
aoqi@0 | 4226 | fs.name()->as_klass_external_name(), |
aoqi@0 | 4227 | fs.signature()->as_klass_external_name()); |
aoqi@0 | 4228 | } |
aoqi@0 | 4229 | } |
aoqi@0 | 4230 | tty->print(" @%3d %s\n", instance_fields_end, "--- instance fields end ---"); |
aoqi@0 | 4231 | tty->print(" @%3d %s\n", instance_size * wordSize, "--- instance ends ---"); |
aoqi@0 | 4232 | tty->print(" @%3d %s\n", InstanceMirrorKlass::offset_of_static_fields(), "--- static fields start ---"); |
aoqi@0 | 4233 | for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
aoqi@0 | 4234 | if (fs.access_flags().is_static()) { |
aoqi@0 | 4235 | tty->print(" @%3d \"%s\" %s\n", |
aoqi@0 | 4236 | fs.offset(), |
aoqi@0 | 4237 | fs.name()->as_klass_external_name(), |
aoqi@0 | 4238 | fs.signature()->as_klass_external_name()); |
aoqi@0 | 4239 | } |
aoqi@0 | 4240 | } |
aoqi@0 | 4241 | tty->print(" @%3d %s\n", static_fields_end, "--- static fields end ---"); |
aoqi@0 | 4242 | tty->print("\n"); |
aoqi@0 | 4243 | } |
aoqi@0 | 4244 | |
aoqi@0 | 4245 | unsigned int |
aoqi@0 | 4246 | ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
aoqi@0 | 4247 | unsigned int nonstatic_oop_map_count, |
aoqi@0 | 4248 | int first_nonstatic_oop_offset) { |
aoqi@0 | 4249 | unsigned int map_count = |
aoqi@0 | 4250 | super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
aoqi@0 | 4251 | if (nonstatic_oop_map_count > 0) { |
aoqi@0 | 4252 | // We have oops to add to map |
aoqi@0 | 4253 | if (map_count == 0) { |
aoqi@0 | 4254 | map_count = nonstatic_oop_map_count; |
aoqi@0 | 4255 | } else { |
aoqi@0 | 4256 | // Check whether we should add a new map block or whether the last one can |
aoqi@0 | 4257 | // be extended |
aoqi@0 | 4258 | OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); |
aoqi@0 | 4259 | OopMapBlock* const last_map = first_map + map_count - 1; |
aoqi@0 | 4260 | |
aoqi@0 | 4261 | int next_offset = last_map->offset() + last_map->count() * heapOopSize; |
aoqi@0 | 4262 | if (next_offset == first_nonstatic_oop_offset) { |
aoqi@0 | 4263 | // There is no gap bettwen superklass's last oop field and first |
aoqi@0 | 4264 | // local oop field, merge maps. |
aoqi@0 | 4265 | nonstatic_oop_map_count -= 1; |
aoqi@0 | 4266 | } else { |
aoqi@0 | 4267 | // Superklass didn't end with a oop field, add extra maps |
aoqi@0 | 4268 | assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
aoqi@0 | 4269 | } |
aoqi@0 | 4270 | map_count += nonstatic_oop_map_count; |
aoqi@0 | 4271 | } |
aoqi@0 | 4272 | } |
aoqi@0 | 4273 | return map_count; |
aoqi@0 | 4274 | } |
aoqi@0 | 4275 | |
aoqi@0 | 4276 | |
aoqi@0 | 4277 | void ClassFileParser::fill_oop_maps(instanceKlassHandle k, |
aoqi@0 | 4278 | unsigned int nonstatic_oop_map_count, |
aoqi@0 | 4279 | int* nonstatic_oop_offsets, |
aoqi@0 | 4280 | unsigned int* nonstatic_oop_counts) { |
aoqi@0 | 4281 | OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
aoqi@0 | 4282 | const InstanceKlass* const super = k->superklass(); |
aoqi@0 | 4283 | const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
aoqi@0 | 4284 | if (super_count > 0) { |
aoqi@0 | 4285 | // Copy maps from superklass |
aoqi@0 | 4286 | OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
aoqi@0 | 4287 | for (unsigned int i = 0; i < super_count; ++i) { |
aoqi@0 | 4288 | *this_oop_map++ = *super_oop_map++; |
aoqi@0 | 4289 | } |
aoqi@0 | 4290 | } |
aoqi@0 | 4291 | |
aoqi@0 | 4292 | if (nonstatic_oop_map_count > 0) { |
aoqi@0 | 4293 | if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
aoqi@0 | 4294 | // The counts differ because there is no gap between superklass's last oop |
aoqi@0 | 4295 | // field and the first local oop field. Extend the last oop map copied |
aoqi@0 | 4296 | // from the superklass instead of creating new one. |
aoqi@0 | 4297 | nonstatic_oop_map_count--; |
aoqi@0 | 4298 | nonstatic_oop_offsets++; |
aoqi@0 | 4299 | this_oop_map--; |
aoqi@0 | 4300 | this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
aoqi@0 | 4301 | this_oop_map++; |
aoqi@0 | 4302 | } |
aoqi@0 | 4303 | |
aoqi@0 | 4304 | // Add new map blocks, fill them |
aoqi@0 | 4305 | while (nonstatic_oop_map_count-- > 0) { |
aoqi@0 | 4306 | this_oop_map->set_offset(*nonstatic_oop_offsets++); |
aoqi@0 | 4307 | this_oop_map->set_count(*nonstatic_oop_counts++); |
aoqi@0 | 4308 | this_oop_map++; |
aoqi@0 | 4309 | } |
aoqi@0 | 4310 | assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
aoqi@0 | 4311 | this_oop_map, "sanity"); |
aoqi@0 | 4312 | } |
aoqi@0 | 4313 | } |
aoqi@0 | 4314 | |
aoqi@0 | 4315 | |
aoqi@0 | 4316 | void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { |
aoqi@0 | 4317 | Klass* super = k->super(); |
aoqi@0 | 4318 | |
aoqi@0 | 4319 | // Check if this klass has an empty finalize method (i.e. one with return bytecode only), |
aoqi@0 | 4320 | // in which case we don't have to register objects as finalizable |
aoqi@0 | 4321 | if (!_has_empty_finalizer) { |
aoqi@0 | 4322 | if (_has_finalizer || |
aoqi@0 | 4323 | (super != NULL && super->has_finalizer())) { |
aoqi@0 | 4324 | k->set_has_finalizer(); |
aoqi@0 | 4325 | } |
aoqi@0 | 4326 | } |
aoqi@0 | 4327 | |
aoqi@0 | 4328 | #ifdef ASSERT |
aoqi@0 | 4329 | bool f = false; |
aoqi@0 | 4330 | Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
aoqi@0 | 4331 | vmSymbols::void_method_signature()); |
aoqi@0 | 4332 | if (m != NULL && !m->is_empty_method()) { |
aoqi@0 | 4333 | f = true; |
aoqi@0 | 4334 | } |
aoqi@0 | 4335 | assert(f == k->has_finalizer(), "inconsistent has_finalizer"); |
aoqi@0 | 4336 | #endif |
aoqi@0 | 4337 | |
aoqi@0 | 4338 | // Check if this klass supports the java.lang.Cloneable interface |
aoqi@0 | 4339 | if (SystemDictionary::Cloneable_klass_loaded()) { |
aoqi@0 | 4340 | if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { |
aoqi@0 | 4341 | k->set_is_cloneable(); |
aoqi@0 | 4342 | } |
aoqi@0 | 4343 | } |
aoqi@0 | 4344 | |
aoqi@0 | 4345 | // Check if this klass has a vanilla default constructor |
aoqi@0 | 4346 | if (super == NULL) { |
aoqi@0 | 4347 | // java.lang.Object has empty default constructor |
aoqi@0 | 4348 | k->set_has_vanilla_constructor(); |
aoqi@0 | 4349 | } else { |
aoqi@0 | 4350 | if (super->has_vanilla_constructor() && |
aoqi@0 | 4351 | _has_vanilla_constructor) { |
aoqi@0 | 4352 | k->set_has_vanilla_constructor(); |
aoqi@0 | 4353 | } |
aoqi@0 | 4354 | #ifdef ASSERT |
aoqi@0 | 4355 | bool v = false; |
aoqi@0 | 4356 | if (super->has_vanilla_constructor()) { |
aoqi@0 | 4357 | Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
aoqi@0 | 4358 | ), vmSymbols::void_method_signature()); |
aoqi@0 | 4359 | if (constructor != NULL && constructor->is_vanilla_constructor()) { |
aoqi@0 | 4360 | v = true; |
aoqi@0 | 4361 | } |
aoqi@0 | 4362 | } |
aoqi@0 | 4363 | assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); |
aoqi@0 | 4364 | #endif |
aoqi@0 | 4365 | } |
aoqi@0 | 4366 | |
aoqi@0 | 4367 | // If it cannot be fast-path allocated, set a bit in the layout helper. |
aoqi@0 | 4368 | // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
aoqi@0 | 4369 | assert(k->size_helper() > 0, "layout_helper is initialized"); |
aoqi@0 | 4370 | if ((!RegisterFinalizersAtInit && k->has_finalizer()) |
aoqi@0 | 4371 | || k->is_abstract() || k->is_interface() |
aoqi@0 | 4372 | || (k->name() == vmSymbols::java_lang_Class() && k->class_loader() == NULL) |
aoqi@0 | 4373 | || k->size_helper() >= FastAllocateSizeLimit) { |
aoqi@0 | 4374 | // Forbid fast-path allocation. |
aoqi@0 | 4375 | jint lh = Klass::instance_layout_helper(k->size_helper(), true); |
aoqi@0 | 4376 | k->set_layout_helper(lh); |
aoqi@0 | 4377 | } |
aoqi@0 | 4378 | } |
aoqi@0 | 4379 | |
aoqi@0 | 4380 | // Attach super classes and interface classes to class loader data |
aoqi@0 | 4381 | void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
aoqi@0 | 4382 | ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
aoqi@0 | 4383 | if (defining_loader_data->is_the_null_class_loader_data()) { |
aoqi@0 | 4384 | // Dependencies to null class loader data are implicit. |
aoqi@0 | 4385 | return; |
aoqi@0 | 4386 | } else { |
aoqi@0 | 4387 | // add super class dependency |
aoqi@0 | 4388 | Klass* super = defined_klass->super(); |
aoqi@0 | 4389 | if (super != NULL) { |
aoqi@0 | 4390 | defining_loader_data->record_dependency(super, CHECK); |
aoqi@0 | 4391 | } |
aoqi@0 | 4392 | |
aoqi@0 | 4393 | // add super interface dependencies |
aoqi@0 | 4394 | Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
aoqi@0 | 4395 | if (local_interfaces != NULL) { |
aoqi@0 | 4396 | int length = local_interfaces->length(); |
aoqi@0 | 4397 | for (int i = 0; i < length; i++) { |
aoqi@0 | 4398 | defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
aoqi@0 | 4399 | } |
aoqi@0 | 4400 | } |
aoqi@0 | 4401 | } |
aoqi@0 | 4402 | } |
aoqi@0 | 4403 | |
aoqi@0 | 4404 | // utility methods for appending an array with check for duplicates |
aoqi@0 | 4405 | |
aoqi@0 | 4406 | void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
aoqi@0 | 4407 | // iterate over new interfaces |
aoqi@0 | 4408 | for (int i = 0; i < ifs->length(); i++) { |
aoqi@0 | 4409 | Klass* e = ifs->at(i); |
aoqi@0 | 4410 | assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
aoqi@0 | 4411 | // add new interface |
aoqi@0 | 4412 | result->append_if_missing(e); |
aoqi@0 | 4413 | } |
aoqi@0 | 4414 | } |
aoqi@0 | 4415 | |
aoqi@0 | 4416 | Array<Klass*>* ClassFileParser::compute_transitive_interfaces( |
aoqi@0 | 4417 | instanceKlassHandle super, |
aoqi@0 | 4418 | Array<Klass*>* local_ifs, TRAPS) { |
aoqi@0 | 4419 | // Compute maximum size for transitive interfaces |
aoqi@0 | 4420 | int max_transitive_size = 0; |
aoqi@0 | 4421 | int super_size = 0; |
aoqi@0 | 4422 | // Add superclass transitive interfaces size |
aoqi@0 | 4423 | if (super.not_null()) { |
aoqi@0 | 4424 | super_size = super->transitive_interfaces()->length(); |
aoqi@0 | 4425 | max_transitive_size += super_size; |
aoqi@0 | 4426 | } |
aoqi@0 | 4427 | // Add local interfaces' super interfaces |
aoqi@0 | 4428 | int local_size = local_ifs->length(); |
aoqi@0 | 4429 | for (int i = 0; i < local_size; i++) { |
aoqi@0 | 4430 | Klass* l = local_ifs->at(i); |
aoqi@0 | 4431 | max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
aoqi@0 | 4432 | } |
aoqi@0 | 4433 | // Finally add local interfaces |
aoqi@0 | 4434 | max_transitive_size += local_size; |
aoqi@0 | 4435 | // Construct array |
aoqi@0 | 4436 | if (max_transitive_size == 0) { |
aoqi@0 | 4437 | // no interfaces, use canonicalized array |
aoqi@0 | 4438 | return Universe::the_empty_klass_array(); |
aoqi@0 | 4439 | } else if (max_transitive_size == super_size) { |
aoqi@0 | 4440 | // no new local interfaces added, share superklass' transitive interface array |
aoqi@0 | 4441 | return super->transitive_interfaces(); |
aoqi@0 | 4442 | } else if (max_transitive_size == local_size) { |
aoqi@0 | 4443 | // only local interfaces added, share local interface array |
aoqi@0 | 4444 | return local_ifs; |
aoqi@0 | 4445 | } else { |
aoqi@0 | 4446 | ResourceMark rm; |
aoqi@0 | 4447 | GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
aoqi@0 | 4448 | |
aoqi@0 | 4449 | // Copy down from superclass |
aoqi@0 | 4450 | if (super.not_null()) { |
aoqi@0 | 4451 | append_interfaces(result, super->transitive_interfaces()); |
aoqi@0 | 4452 | } |
aoqi@0 | 4453 | |
aoqi@0 | 4454 | // Copy down from local interfaces' superinterfaces |
aoqi@0 | 4455 | for (int i = 0; i < local_ifs->length(); i++) { |
aoqi@0 | 4456 | Klass* l = local_ifs->at(i); |
aoqi@0 | 4457 | append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
aoqi@0 | 4458 | } |
aoqi@0 | 4459 | // Finally add local interfaces |
aoqi@0 | 4460 | append_interfaces(result, local_ifs); |
aoqi@0 | 4461 | |
aoqi@0 | 4462 | // length will be less than the max_transitive_size if duplicates were removed |
aoqi@0 | 4463 | int length = result->length(); |
aoqi@0 | 4464 | assert(length <= max_transitive_size, "just checking"); |
aoqi@0 | 4465 | Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(_loader_data, length, CHECK_NULL); |
aoqi@0 | 4466 | for (int i = 0; i < length; i++) { |
aoqi@0 | 4467 | Klass* e = result->at(i); |
aoqi@0 | 4468 | assert(e != NULL, "just checking"); |
aoqi@0 | 4469 | new_result->at_put(i, e); |
aoqi@0 | 4470 | } |
aoqi@0 | 4471 | return new_result; |
aoqi@0 | 4472 | } |
aoqi@0 | 4473 | } |
aoqi@0 | 4474 | |
aoqi@0 | 4475 | void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { |
aoqi@0 | 4476 | Klass* super = this_klass->super(); |
aoqi@0 | 4477 | if ((super != NULL) && |
aoqi@0 | 4478 | (!Reflection::verify_class_access(this_klass(), super, false))) { |
aoqi@0 | 4479 | ResourceMark rm(THREAD); |
aoqi@0 | 4480 | Exceptions::fthrow( |
aoqi@0 | 4481 | THREAD_AND_LOCATION, |
aoqi@0 | 4482 | vmSymbols::java_lang_IllegalAccessError(), |
aoqi@0 | 4483 | "class %s cannot access its superclass %s", |
aoqi@0 | 4484 | this_klass->external_name(), |
aoqi@0 | 4485 | InstanceKlass::cast(super)->external_name() |
aoqi@0 | 4486 | ); |
aoqi@0 | 4487 | return; |
aoqi@0 | 4488 | } |
aoqi@0 | 4489 | } |
aoqi@0 | 4490 | |
aoqi@0 | 4491 | |
aoqi@0 | 4492 | void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { |
aoqi@0 | 4493 | Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
aoqi@0 | 4494 | int lng = local_interfaces->length(); |
aoqi@0 | 4495 | for (int i = lng - 1; i >= 0; i--) { |
aoqi@0 | 4496 | Klass* k = local_interfaces->at(i); |
aoqi@0 | 4497 | assert (k != NULL && k->is_interface(), "invalid interface"); |
aoqi@0 | 4498 | if (!Reflection::verify_class_access(this_klass(), k, false)) { |
aoqi@0 | 4499 | ResourceMark rm(THREAD); |
aoqi@0 | 4500 | Exceptions::fthrow( |
aoqi@0 | 4501 | THREAD_AND_LOCATION, |
aoqi@0 | 4502 | vmSymbols::java_lang_IllegalAccessError(), |
aoqi@0 | 4503 | "class %s cannot access its superinterface %s", |
aoqi@0 | 4504 | this_klass->external_name(), |
aoqi@0 | 4505 | InstanceKlass::cast(k)->external_name() |
aoqi@0 | 4506 | ); |
aoqi@0 | 4507 | return; |
aoqi@0 | 4508 | } |
aoqi@0 | 4509 | } |
aoqi@0 | 4510 | } |
aoqi@0 | 4511 | |
aoqi@0 | 4512 | |
aoqi@0 | 4513 | void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { |
aoqi@0 | 4514 | Array<Method*>* methods = this_klass->methods(); |
aoqi@0 | 4515 | int num_methods = methods->length(); |
aoqi@0 | 4516 | |
aoqi@0 | 4517 | // go thru each method and check if it overrides a final method |
aoqi@0 | 4518 | for (int index = 0; index < num_methods; index++) { |
aoqi@0 | 4519 | Method* m = methods->at(index); |
aoqi@0 | 4520 | |
aoqi@0 | 4521 | // skip private, static, and <init> methods |
aoqi@0 | 4522 | if ((!m->is_private() && !m->is_static()) && |
aoqi@0 | 4523 | (m->name() != vmSymbols::object_initializer_name())) { |
aoqi@0 | 4524 | |
aoqi@0 | 4525 | Symbol* name = m->name(); |
aoqi@0 | 4526 | Symbol* signature = m->signature(); |
aoqi@0 | 4527 | Klass* k = this_klass->super(); |
aoqi@0 | 4528 | Method* super_m = NULL; |
aoqi@0 | 4529 | while (k != NULL) { |
aoqi@0 | 4530 | // skip supers that don't have final methods. |
aoqi@0 | 4531 | if (k->has_final_method()) { |
aoqi@0 | 4532 | // lookup a matching method in the super class hierarchy |
aoqi@0 | 4533 | super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
aoqi@0 | 4534 | if (super_m == NULL) { |
aoqi@0 | 4535 | break; // didn't find any match; get out |
aoqi@0 | 4536 | } |
aoqi@0 | 4537 | |
aoqi@0 | 4538 | if (super_m->is_final() && !super_m->is_static() && |
aoqi@0 | 4539 | // matching method in super is final, and not static |
aoqi@0 | 4540 | (Reflection::verify_field_access(this_klass(), |
aoqi@0 | 4541 | super_m->method_holder(), |
aoqi@0 | 4542 | super_m->method_holder(), |
aoqi@0 | 4543 | super_m->access_flags(), false)) |
aoqi@0 | 4544 | // this class can access super final method and therefore override |
aoqi@0 | 4545 | ) { |
aoqi@0 | 4546 | ResourceMark rm(THREAD); |
aoqi@0 | 4547 | Exceptions::fthrow( |
aoqi@0 | 4548 | THREAD_AND_LOCATION, |
aoqi@0 | 4549 | vmSymbols::java_lang_VerifyError(), |
aoqi@0 | 4550 | "class %s overrides final method %s.%s", |
aoqi@0 | 4551 | this_klass->external_name(), |
aoqi@0 | 4552 | name->as_C_string(), |
aoqi@0 | 4553 | signature->as_C_string() |
aoqi@0 | 4554 | ); |
aoqi@0 | 4555 | return; |
aoqi@0 | 4556 | } |
aoqi@0 | 4557 | |
aoqi@0 | 4558 | // continue to look from super_m's holder's super. |
aoqi@0 | 4559 | k = super_m->method_holder()->super(); |
aoqi@0 | 4560 | continue; |
aoqi@0 | 4561 | } |
aoqi@0 | 4562 | |
aoqi@0 | 4563 | k = k->super(); |
aoqi@0 | 4564 | } |
aoqi@0 | 4565 | } |
aoqi@0 | 4566 | } |
aoqi@0 | 4567 | } |
aoqi@0 | 4568 | |
aoqi@0 | 4569 | |
aoqi@0 | 4570 | // assumes that this_klass is an interface |
aoqi@0 | 4571 | void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { |
aoqi@0 | 4572 | assert(this_klass->is_interface(), "not an interface"); |
aoqi@0 | 4573 | Array<Method*>* methods = this_klass->methods(); |
aoqi@0 | 4574 | int num_methods = methods->length(); |
aoqi@0 | 4575 | |
aoqi@0 | 4576 | for (int index = 0; index < num_methods; index++) { |
aoqi@0 | 4577 | Method* m = methods->at(index); |
aoqi@0 | 4578 | // if m is static and not the init method, throw a verify error |
aoqi@0 | 4579 | if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { |
aoqi@0 | 4580 | ResourceMark rm(THREAD); |
aoqi@0 | 4581 | Exceptions::fthrow( |
aoqi@0 | 4582 | THREAD_AND_LOCATION, |
aoqi@0 | 4583 | vmSymbols::java_lang_VerifyError(), |
aoqi@0 | 4584 | "Illegal static method %s in interface %s", |
aoqi@0 | 4585 | m->name()->as_C_string(), |
aoqi@0 | 4586 | this_klass->external_name() |
aoqi@0 | 4587 | ); |
aoqi@0 | 4588 | return; |
aoqi@0 | 4589 | } |
aoqi@0 | 4590 | } |
aoqi@0 | 4591 | } |
aoqi@0 | 4592 | |
aoqi@0 | 4593 | // utility methods for format checking |
aoqi@0 | 4594 | |
aoqi@0 | 4595 | void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { |
aoqi@0 | 4596 | if (!_need_verify) { return; } |
aoqi@0 | 4597 | |
aoqi@0 | 4598 | const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; |
aoqi@0 | 4599 | const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; |
aoqi@0 | 4600 | const bool is_final = (flags & JVM_ACC_FINAL) != 0; |
aoqi@0 | 4601 | const bool is_super = (flags & JVM_ACC_SUPER) != 0; |
aoqi@0 | 4602 | const bool is_enum = (flags & JVM_ACC_ENUM) != 0; |
aoqi@0 | 4603 | const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; |
aoqi@0 | 4604 | const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
aoqi@0 | 4605 | |
aoqi@0 | 4606 | if ((is_abstract && is_final) || |
aoqi@0 | 4607 | (is_interface && !is_abstract) || |
aoqi@0 | 4608 | (is_interface && major_gte_15 && (is_super || is_enum)) || |
aoqi@0 | 4609 | (!is_interface && major_gte_15 && is_annotation)) { |
aoqi@0 | 4610 | ResourceMark rm(THREAD); |
aoqi@0 | 4611 | Exceptions::fthrow( |
aoqi@0 | 4612 | THREAD_AND_LOCATION, |
aoqi@0 | 4613 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 4614 | "Illegal class modifiers in class %s: 0x%X", |
aoqi@0 | 4615 | _class_name->as_C_string(), flags |
aoqi@0 | 4616 | ); |
aoqi@0 | 4617 | return; |
aoqi@0 | 4618 | } |
aoqi@0 | 4619 | } |
aoqi@0 | 4620 | |
aoqi@0 | 4621 | bool ClassFileParser::has_illegal_visibility(jint flags) { |
aoqi@0 | 4622 | const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; |
aoqi@0 | 4623 | const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
aoqi@0 | 4624 | const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; |
aoqi@0 | 4625 | |
aoqi@0 | 4626 | return ((is_public && is_protected) || |
aoqi@0 | 4627 | (is_public && is_private) || |
aoqi@0 | 4628 | (is_protected && is_private)); |
aoqi@0 | 4629 | } |
aoqi@0 | 4630 | |
aoqi@0 | 4631 | bool ClassFileParser::is_supported_version(u2 major, u2 minor) { |
aoqi@0 | 4632 | u2 max_version = |
aoqi@0 | 4633 | JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
aoqi@0 | 4634 | (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
aoqi@0 | 4635 | return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
aoqi@0 | 4636 | (major <= max_version) && |
aoqi@0 | 4637 | ((major != max_version) || |
aoqi@0 | 4638 | (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
aoqi@0 | 4639 | } |
aoqi@0 | 4640 | |
aoqi@0 | 4641 | void ClassFileParser::verify_legal_field_modifiers( |
aoqi@0 | 4642 | jint flags, bool is_interface, TRAPS) { |
aoqi@0 | 4643 | if (!_need_verify) { return; } |
aoqi@0 | 4644 | |
aoqi@0 | 4645 | const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; |
aoqi@0 | 4646 | const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
aoqi@0 | 4647 | const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; |
aoqi@0 | 4648 | const bool is_static = (flags & JVM_ACC_STATIC) != 0; |
aoqi@0 | 4649 | const bool is_final = (flags & JVM_ACC_FINAL) != 0; |
aoqi@0 | 4650 | const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; |
aoqi@0 | 4651 | const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; |
aoqi@0 | 4652 | const bool is_enum = (flags & JVM_ACC_ENUM) != 0; |
aoqi@0 | 4653 | const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
aoqi@0 | 4654 | |
aoqi@0 | 4655 | bool is_illegal = false; |
aoqi@0 | 4656 | |
aoqi@0 | 4657 | if (is_interface) { |
aoqi@0 | 4658 | if (!is_public || !is_static || !is_final || is_private || |
aoqi@0 | 4659 | is_protected || is_volatile || is_transient || |
aoqi@0 | 4660 | (major_gte_15 && is_enum)) { |
aoqi@0 | 4661 | is_illegal = true; |
aoqi@0 | 4662 | } |
aoqi@0 | 4663 | } else { // not interface |
aoqi@0 | 4664 | if (has_illegal_visibility(flags) || (is_final && is_volatile)) { |
aoqi@0 | 4665 | is_illegal = true; |
aoqi@0 | 4666 | } |
aoqi@0 | 4667 | } |
aoqi@0 | 4668 | |
aoqi@0 | 4669 | if (is_illegal) { |
aoqi@0 | 4670 | ResourceMark rm(THREAD); |
aoqi@0 | 4671 | Exceptions::fthrow( |
aoqi@0 | 4672 | THREAD_AND_LOCATION, |
aoqi@0 | 4673 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 4674 | "Illegal field modifiers in class %s: 0x%X", |
aoqi@0 | 4675 | _class_name->as_C_string(), flags); |
aoqi@0 | 4676 | return; |
aoqi@0 | 4677 | } |
aoqi@0 | 4678 | } |
aoqi@0 | 4679 | |
aoqi@0 | 4680 | void ClassFileParser::verify_legal_method_modifiers( |
aoqi@0 | 4681 | jint flags, bool is_interface, Symbol* name, TRAPS) { |
aoqi@0 | 4682 | if (!_need_verify) { return; } |
aoqi@0 | 4683 | |
aoqi@0 | 4684 | const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; |
aoqi@0 | 4685 | const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; |
aoqi@0 | 4686 | const bool is_static = (flags & JVM_ACC_STATIC) != 0; |
aoqi@0 | 4687 | const bool is_final = (flags & JVM_ACC_FINAL) != 0; |
aoqi@0 | 4688 | const bool is_native = (flags & JVM_ACC_NATIVE) != 0; |
aoqi@0 | 4689 | const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; |
aoqi@0 | 4690 | const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; |
aoqi@0 | 4691 | const bool is_strict = (flags & JVM_ACC_STRICT) != 0; |
aoqi@0 | 4692 | const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; |
aoqi@0 | 4693 | const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
aoqi@0 | 4694 | const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
aoqi@0 | 4695 | const bool major_gte_8 = _major_version >= JAVA_8_VERSION; |
aoqi@0 | 4696 | const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
aoqi@0 | 4697 | |
aoqi@0 | 4698 | bool is_illegal = false; |
aoqi@0 | 4699 | |
aoqi@0 | 4700 | if (is_interface) { |
aoqi@0 | 4701 | if (major_gte_8) { |
aoqi@0 | 4702 | // Class file version is JAVA_8_VERSION or later Methods of |
aoqi@0 | 4703 | // interfaces may set any of the flags except ACC_PROTECTED, |
aoqi@0 | 4704 | // ACC_FINAL, ACC_NATIVE, and ACC_SYNCHRONIZED; they must |
aoqi@0 | 4705 | // have exactly one of the ACC_PUBLIC or ACC_PRIVATE flags set. |
aoqi@0 | 4706 | if ((is_public == is_private) || /* Only one of private and public should be true - XNOR */ |
aoqi@0 | 4707 | (is_native || is_protected || is_final || is_synchronized) || |
aoqi@0 | 4708 | // If a specific method of a class or interface has its |
aoqi@0 | 4709 | // ACC_ABSTRACT flag set, it must not have any of its |
aoqi@0 | 4710 | // ACC_FINAL, ACC_NATIVE, ACC_PRIVATE, ACC_STATIC, |
aoqi@0 | 4711 | // ACC_STRICT, or ACC_SYNCHRONIZED flags set. No need to |
aoqi@0 | 4712 | // check for ACC_FINAL, ACC_NATIVE or ACC_SYNCHRONIZED as |
aoqi@0 | 4713 | // those flags are illegal irrespective of ACC_ABSTRACT being set or not. |
aoqi@0 | 4714 | (is_abstract && (is_private || is_static || is_strict))) { |
aoqi@0 | 4715 | is_illegal = true; |
aoqi@0 | 4716 | } |
aoqi@0 | 4717 | } else if (major_gte_15) { |
aoqi@0 | 4718 | // Class file version in the interval [JAVA_1_5_VERSION, JAVA_8_VERSION) |
aoqi@0 | 4719 | if (!is_public || is_static || is_final || is_synchronized || |
aoqi@0 | 4720 | is_native || !is_abstract || is_strict) { |
aoqi@0 | 4721 | is_illegal = true; |
aoqi@0 | 4722 | } |
aoqi@0 | 4723 | } else { |
aoqi@0 | 4724 | // Class file version is pre-JAVA_1_5_VERSION |
aoqi@0 | 4725 | if (!is_public || is_static || is_final || is_native || !is_abstract) { |
aoqi@0 | 4726 | is_illegal = true; |
aoqi@0 | 4727 | } |
aoqi@0 | 4728 | } |
aoqi@0 | 4729 | } else { // not interface |
aoqi@0 | 4730 | if (is_initializer) { |
aoqi@0 | 4731 | if (is_static || is_final || is_synchronized || is_native || |
aoqi@0 | 4732 | is_abstract || (major_gte_15 && is_bridge)) { |
aoqi@0 | 4733 | is_illegal = true; |
aoqi@0 | 4734 | } |
aoqi@0 | 4735 | } else { // not initializer |
aoqi@0 | 4736 | if (is_abstract) { |
aoqi@0 | 4737 | if ((is_final || is_native || is_private || is_static || |
aoqi@0 | 4738 | (major_gte_15 && (is_synchronized || is_strict)))) { |
aoqi@0 | 4739 | is_illegal = true; |
aoqi@0 | 4740 | } |
aoqi@0 | 4741 | } |
aoqi@0 | 4742 | if (has_illegal_visibility(flags)) { |
aoqi@0 | 4743 | is_illegal = true; |
aoqi@0 | 4744 | } |
aoqi@0 | 4745 | } |
aoqi@0 | 4746 | } |
aoqi@0 | 4747 | |
aoqi@0 | 4748 | if (is_illegal) { |
aoqi@0 | 4749 | ResourceMark rm(THREAD); |
aoqi@0 | 4750 | Exceptions::fthrow( |
aoqi@0 | 4751 | THREAD_AND_LOCATION, |
aoqi@0 | 4752 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 4753 | "Method %s in class %s has illegal modifiers: 0x%X", |
aoqi@0 | 4754 | name->as_C_string(), _class_name->as_C_string(), flags); |
aoqi@0 | 4755 | return; |
aoqi@0 | 4756 | } |
aoqi@0 | 4757 | } |
aoqi@0 | 4758 | |
aoqi@0 | 4759 | void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { |
aoqi@0 | 4760 | assert(_need_verify, "only called when _need_verify is true"); |
aoqi@0 | 4761 | int i = 0; |
aoqi@0 | 4762 | int count = length >> 2; |
aoqi@0 | 4763 | for (int k=0; k<count; k++) { |
aoqi@0 | 4764 | unsigned char b0 = buffer[i]; |
aoqi@0 | 4765 | unsigned char b1 = buffer[i+1]; |
aoqi@0 | 4766 | unsigned char b2 = buffer[i+2]; |
aoqi@0 | 4767 | unsigned char b3 = buffer[i+3]; |
aoqi@0 | 4768 | // For an unsigned char v, |
aoqi@0 | 4769 | // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; |
aoqi@0 | 4770 | // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. |
aoqi@0 | 4771 | unsigned char res = b0 | b0 - 1 | |
aoqi@0 | 4772 | b1 | b1 - 1 | |
aoqi@0 | 4773 | b2 | b2 - 1 | |
aoqi@0 | 4774 | b3 | b3 - 1; |
aoqi@0 | 4775 | if (res >= 128) break; |
aoqi@0 | 4776 | i += 4; |
aoqi@0 | 4777 | } |
aoqi@0 | 4778 | for(; i < length; i++) { |
aoqi@0 | 4779 | unsigned short c; |
aoqi@0 | 4780 | // no embedded zeros |
aoqi@0 | 4781 | guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); |
aoqi@0 | 4782 | if(buffer[i] < 128) { |
aoqi@0 | 4783 | continue; |
aoqi@0 | 4784 | } |
aoqi@0 | 4785 | if ((i + 5) < length) { // see if it's legal supplementary character |
aoqi@0 | 4786 | if (UTF8::is_supplementary_character(&buffer[i])) { |
aoqi@0 | 4787 | c = UTF8::get_supplementary_character(&buffer[i]); |
aoqi@0 | 4788 | i += 5; |
aoqi@0 | 4789 | continue; |
aoqi@0 | 4790 | } |
aoqi@0 | 4791 | } |
aoqi@0 | 4792 | switch (buffer[i] >> 4) { |
aoqi@0 | 4793 | default: break; |
aoqi@0 | 4794 | case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: |
aoqi@0 | 4795 | classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); |
aoqi@0 | 4796 | case 0xC: case 0xD: // 110xxxxx 10xxxxxx |
aoqi@0 | 4797 | c = (buffer[i] & 0x1F) << 6; |
aoqi@0 | 4798 | i++; |
aoqi@0 | 4799 | if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { |
aoqi@0 | 4800 | c += buffer[i] & 0x3F; |
aoqi@0 | 4801 | if (_major_version <= 47 || c == 0 || c >= 0x80) { |
aoqi@0 | 4802 | // for classes with major > 47, c must a null or a character in its shortest form |
aoqi@0 | 4803 | break; |
aoqi@0 | 4804 | } |
aoqi@0 | 4805 | } |
aoqi@0 | 4806 | classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); |
aoqi@0 | 4807 | case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx |
aoqi@0 | 4808 | c = (buffer[i] & 0xF) << 12; |
aoqi@0 | 4809 | i += 2; |
aoqi@0 | 4810 | if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { |
aoqi@0 | 4811 | c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); |
aoqi@0 | 4812 | if (_major_version <= 47 || c >= 0x800) { |
aoqi@0 | 4813 | // for classes with major > 47, c must be in its shortest form |
aoqi@0 | 4814 | break; |
aoqi@0 | 4815 | } |
aoqi@0 | 4816 | } |
aoqi@0 | 4817 | classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); |
aoqi@0 | 4818 | } // end of switch |
aoqi@0 | 4819 | } // end of for |
aoqi@0 | 4820 | } |
aoqi@0 | 4821 | |
aoqi@0 | 4822 | // Checks if name is a legal class name. |
aoqi@0 | 4823 | void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
aoqi@0 | 4824 | if (!_need_verify || _relax_verify) { return; } |
aoqi@0 | 4825 | |
aoqi@0 | 4826 | char buf[fixed_buffer_size]; |
aoqi@0 | 4827 | char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
aoqi@0 | 4828 | unsigned int length = name->utf8_length(); |
aoqi@0 | 4829 | bool legal = false; |
aoqi@0 | 4830 | |
aoqi@0 | 4831 | if (length > 0) { |
aoqi@0 | 4832 | char* p; |
aoqi@0 | 4833 | if (bytes[0] == JVM_SIGNATURE_ARRAY) { |
aoqi@0 | 4834 | p = skip_over_field_signature(bytes, false, length, CHECK); |
aoqi@0 | 4835 | legal = (p != NULL) && ((p - bytes) == (int)length); |
aoqi@0 | 4836 | } else if (_major_version < JAVA_1_5_VERSION) { |
aoqi@0 | 4837 | if (bytes[0] != '<') { |
aoqi@0 | 4838 | p = skip_over_field_name(bytes, true, length); |
aoqi@0 | 4839 | legal = (p != NULL) && ((p - bytes) == (int)length); |
aoqi@0 | 4840 | } |
aoqi@0 | 4841 | } else { |
aoqi@0 | 4842 | // 4900761: relax the constraints based on JSR202 spec |
aoqi@0 | 4843 | // Class names may be drawn from the entire Unicode character set. |
aoqi@0 | 4844 | // Identifiers between '/' must be unqualified names. |
aoqi@0 | 4845 | // The utf8 string has been verified when parsing cpool entries. |
aoqi@0 | 4846 | legal = verify_unqualified_name(bytes, length, LegalClass); |
aoqi@0 | 4847 | } |
aoqi@0 | 4848 | } |
aoqi@0 | 4849 | if (!legal) { |
aoqi@0 | 4850 | ResourceMark rm(THREAD); |
aoqi@0 | 4851 | Exceptions::fthrow( |
aoqi@0 | 4852 | THREAD_AND_LOCATION, |
aoqi@0 | 4853 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 4854 | "Illegal class name \"%s\" in class file %s", bytes, |
aoqi@0 | 4855 | _class_name->as_C_string() |
aoqi@0 | 4856 | ); |
aoqi@0 | 4857 | return; |
aoqi@0 | 4858 | } |
aoqi@0 | 4859 | } |
aoqi@0 | 4860 | |
aoqi@0 | 4861 | // Checks if name is a legal field name. |
aoqi@0 | 4862 | void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
aoqi@0 | 4863 | if (!_need_verify || _relax_verify) { return; } |
aoqi@0 | 4864 | |
aoqi@0 | 4865 | char buf[fixed_buffer_size]; |
aoqi@0 | 4866 | char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
aoqi@0 | 4867 | unsigned int length = name->utf8_length(); |
aoqi@0 | 4868 | bool legal = false; |
aoqi@0 | 4869 | |
aoqi@0 | 4870 | if (length > 0) { |
aoqi@0 | 4871 | if (_major_version < JAVA_1_5_VERSION) { |
aoqi@0 | 4872 | if (bytes[0] != '<') { |
aoqi@0 | 4873 | char* p = skip_over_field_name(bytes, false, length); |
aoqi@0 | 4874 | legal = (p != NULL) && ((p - bytes) == (int)length); |
aoqi@0 | 4875 | } |
aoqi@0 | 4876 | } else { |
aoqi@0 | 4877 | // 4881221: relax the constraints based on JSR202 spec |
aoqi@0 | 4878 | legal = verify_unqualified_name(bytes, length, LegalField); |
aoqi@0 | 4879 | } |
aoqi@0 | 4880 | } |
aoqi@0 | 4881 | |
aoqi@0 | 4882 | if (!legal) { |
aoqi@0 | 4883 | ResourceMark rm(THREAD); |
aoqi@0 | 4884 | Exceptions::fthrow( |
aoqi@0 | 4885 | THREAD_AND_LOCATION, |
aoqi@0 | 4886 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 4887 | "Illegal field name \"%s\" in class %s", bytes, |
aoqi@0 | 4888 | _class_name->as_C_string() |
aoqi@0 | 4889 | ); |
aoqi@0 | 4890 | return; |
aoqi@0 | 4891 | } |
aoqi@0 | 4892 | } |
aoqi@0 | 4893 | |
aoqi@0 | 4894 | // Checks if name is a legal method name. |
aoqi@0 | 4895 | void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
aoqi@0 | 4896 | if (!_need_verify || _relax_verify) { return; } |
aoqi@0 | 4897 | |
aoqi@0 | 4898 | assert(name != NULL, "method name is null"); |
aoqi@0 | 4899 | char buf[fixed_buffer_size]; |
aoqi@0 | 4900 | char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
aoqi@0 | 4901 | unsigned int length = name->utf8_length(); |
aoqi@0 | 4902 | bool legal = false; |
aoqi@0 | 4903 | |
aoqi@0 | 4904 | if (length > 0) { |
aoqi@0 | 4905 | if (bytes[0] == '<') { |
aoqi@0 | 4906 | if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { |
aoqi@0 | 4907 | legal = true; |
aoqi@0 | 4908 | } |
aoqi@0 | 4909 | } else if (_major_version < JAVA_1_5_VERSION) { |
aoqi@0 | 4910 | char* p; |
aoqi@0 | 4911 | p = skip_over_field_name(bytes, false, length); |
aoqi@0 | 4912 | legal = (p != NULL) && ((p - bytes) == (int)length); |
aoqi@0 | 4913 | } else { |
aoqi@0 | 4914 | // 4881221: relax the constraints based on JSR202 spec |
aoqi@0 | 4915 | legal = verify_unqualified_name(bytes, length, LegalMethod); |
aoqi@0 | 4916 | } |
aoqi@0 | 4917 | } |
aoqi@0 | 4918 | |
aoqi@0 | 4919 | if (!legal) { |
aoqi@0 | 4920 | ResourceMark rm(THREAD); |
aoqi@0 | 4921 | Exceptions::fthrow( |
aoqi@0 | 4922 | THREAD_AND_LOCATION, |
aoqi@0 | 4923 | vmSymbols::java_lang_ClassFormatError(), |
aoqi@0 | 4924 | "Illegal method name \"%s\" in class %s", bytes, |
aoqi@0 | 4925 | _class_name->as_C_string() |
aoqi@0 | 4926 | ); |
aoqi@0 | 4927 | return; |
aoqi@0 | 4928 | } |
aoqi@0 | 4929 | } |
aoqi@0 | 4930 | |
aoqi@0 | 4931 | |
aoqi@0 | 4932 | // Checks if signature is a legal field signature. |
aoqi@0 | 4933 | void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
aoqi@0 | 4934 | if (!_need_verify) { return; } |
aoqi@0 | 4935 | |
aoqi@0 | 4936 | char buf[fixed_buffer_size]; |
aoqi@0 | 4937 | char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
aoqi@0 | 4938 | unsigned int length = signature->utf8_length(); |
aoqi@0 | 4939 | char* p = skip_over_field_signature(bytes, false, length, CHECK); |
aoqi@0 | 4940 | |
aoqi@0 | 4941 | if (p == NULL || (p - bytes) != (int)length) { |
aoqi@0 | 4942 | throwIllegalSignature("Field", name, signature, CHECK); |
aoqi@0 | 4943 | } |
aoqi@0 | 4944 | } |
aoqi@0 | 4945 | |
aoqi@0 | 4946 | // Checks if signature is a legal method signature. |
aoqi@0 | 4947 | // Returns number of parameters |
aoqi@0 | 4948 | int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
aoqi@0 | 4949 | if (!_need_verify) { |
aoqi@0 | 4950 | // make sure caller's args_size will be less than 0 even for non-static |
aoqi@0 | 4951 | // method so it will be recomputed in compute_size_of_parameters(). |
aoqi@0 | 4952 | return -2; |
aoqi@0 | 4953 | } |
aoqi@0 | 4954 | |
aoqi@0 | 4955 | unsigned int args_size = 0; |
aoqi@0 | 4956 | char buf[fixed_buffer_size]; |
aoqi@0 | 4957 | char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
aoqi@0 | 4958 | unsigned int length = signature->utf8_length(); |
aoqi@0 | 4959 | char* nextp; |
aoqi@0 | 4960 | |
aoqi@0 | 4961 | // The first character must be a '(' |
aoqi@0 | 4962 | if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { |
aoqi@0 | 4963 | length--; |
aoqi@0 | 4964 | // Skip over legal field signatures |
aoqi@0 | 4965 | nextp = skip_over_field_signature(p, false, length, CHECK_0); |
aoqi@0 | 4966 | while ((length > 0) && (nextp != NULL)) { |
aoqi@0 | 4967 | args_size++; |
aoqi@0 | 4968 | if (p[0] == 'J' || p[0] == 'D') { |
aoqi@0 | 4969 | args_size++; |
aoqi@0 | 4970 | } |
aoqi@0 | 4971 | length -= nextp - p; |
aoqi@0 | 4972 | p = nextp; |
aoqi@0 | 4973 | nextp = skip_over_field_signature(p, false, length, CHECK_0); |
aoqi@0 | 4974 | } |
aoqi@0 | 4975 | // The first non-signature thing better be a ')' |
aoqi@0 | 4976 | if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { |
aoqi@0 | 4977 | length--; |
aoqi@0 | 4978 | if (name->utf8_length() > 0 && name->byte_at(0) == '<') { |
aoqi@0 | 4979 | // All internal methods must return void |
aoqi@0 | 4980 | if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { |
aoqi@0 | 4981 | return args_size; |
aoqi@0 | 4982 | } |
aoqi@0 | 4983 | } else { |
aoqi@0 | 4984 | // Now we better just have a return value |
aoqi@0 | 4985 | nextp = skip_over_field_signature(p, true, length, CHECK_0); |
aoqi@0 | 4986 | if (nextp && ((int)length == (nextp - p))) { |
aoqi@0 | 4987 | return args_size; |
aoqi@0 | 4988 | } |
aoqi@0 | 4989 | } |
aoqi@0 | 4990 | } |
aoqi@0 | 4991 | } |
aoqi@0 | 4992 | // Report error |
aoqi@0 | 4993 | throwIllegalSignature("Method", name, signature, CHECK_0); |
aoqi@0 | 4994 | return 0; |
aoqi@0 | 4995 | } |
aoqi@0 | 4996 | |
aoqi@0 | 4997 | |
aoqi@0 | 4998 | // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
aoqi@0 | 4999 | // Method names also may not contain the characters '<' or '>', unless <init> |
aoqi@0 | 5000 | // or <clinit>. Note that method names may not be <init> or <clinit> in this |
aoqi@0 | 5001 | // method. Because these names have been checked as special cases before |
aoqi@0 | 5002 | // calling this method in verify_legal_method_name. |
aoqi@0 | 5003 | bool ClassFileParser::verify_unqualified_name( |
aoqi@0 | 5004 | char* name, unsigned int length, int type) { |
aoqi@0 | 5005 | jchar ch; |
aoqi@0 | 5006 | |
aoqi@0 | 5007 | for (char* p = name; p != name + length; ) { |
aoqi@0 | 5008 | ch = *p; |
aoqi@0 | 5009 | if (ch < 128) { |
aoqi@0 | 5010 | p++; |
aoqi@0 | 5011 | if (ch == '.' || ch == ';' || ch == '[' ) { |
aoqi@0 | 5012 | return false; // do not permit '.', ';', or '[' |
aoqi@0 | 5013 | } |
aoqi@0 | 5014 | if (type != LegalClass && ch == '/') { |
aoqi@0 | 5015 | return false; // do not permit '/' unless it's class name |
aoqi@0 | 5016 | } |
aoqi@0 | 5017 | if (type == LegalMethod && (ch == '<' || ch == '>')) { |
aoqi@0 | 5018 | return false; // do not permit '<' or '>' in method names |
aoqi@0 | 5019 | } |
aoqi@0 | 5020 | } else { |
aoqi@0 | 5021 | char* tmp_p = UTF8::next(p, &ch); |
aoqi@0 | 5022 | p = tmp_p; |
aoqi@0 | 5023 | } |
aoqi@0 | 5024 | } |
aoqi@0 | 5025 | return true; |
aoqi@0 | 5026 | } |
aoqi@0 | 5027 | |
aoqi@0 | 5028 | |
aoqi@0 | 5029 | // Take pointer to a string. Skip over the longest part of the string that could |
aoqi@0 | 5030 | // be taken as a fieldname. Allow '/' if slash_ok is true. |
aoqi@0 | 5031 | // Return a pointer to just past the fieldname. |
aoqi@0 | 5032 | // Return NULL if no fieldname at all was found, or in the case of slash_ok |
aoqi@0 | 5033 | // being true, we saw consecutive slashes (meaning we were looking for a |
aoqi@0 | 5034 | // qualified path but found something that was badly-formed). |
aoqi@0 | 5035 | char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { |
aoqi@0 | 5036 | char* p; |
aoqi@0 | 5037 | jchar ch; |
aoqi@0 | 5038 | jboolean last_is_slash = false; |
aoqi@0 | 5039 | jboolean not_first_ch = false; |
aoqi@0 | 5040 | |
aoqi@0 | 5041 | for (p = name; p != name + length; not_first_ch = true) { |
aoqi@0 | 5042 | char* old_p = p; |
aoqi@0 | 5043 | ch = *p; |
aoqi@0 | 5044 | if (ch < 128) { |
aoqi@0 | 5045 | p++; |
aoqi@0 | 5046 | // quick check for ascii |
aoqi@0 | 5047 | if ((ch >= 'a' && ch <= 'z') || |
aoqi@0 | 5048 | (ch >= 'A' && ch <= 'Z') || |
aoqi@0 | 5049 | (ch == '_' || ch == '$') || |
aoqi@0 | 5050 | (not_first_ch && ch >= '0' && ch <= '9')) { |
aoqi@0 | 5051 | last_is_slash = false; |
aoqi@0 | 5052 | continue; |
aoqi@0 | 5053 | } |
aoqi@0 | 5054 | if (slash_ok && ch == '/') { |
aoqi@0 | 5055 | if (last_is_slash) { |
aoqi@0 | 5056 | return NULL; // Don't permit consecutive slashes |
aoqi@0 | 5057 | } |
aoqi@0 | 5058 | last_is_slash = true; |
aoqi@0 | 5059 | continue; |
aoqi@0 | 5060 | } |
aoqi@0 | 5061 | } else { |
aoqi@0 | 5062 | jint unicode_ch; |
aoqi@0 | 5063 | char* tmp_p = UTF8::next_character(p, &unicode_ch); |
aoqi@0 | 5064 | p = tmp_p; |
aoqi@0 | 5065 | last_is_slash = false; |
aoqi@0 | 5066 | // Check if ch is Java identifier start or is Java identifier part |
aoqi@0 | 5067 | // 4672820: call java.lang.Character methods directly without generating separate tables. |
aoqi@0 | 5068 | EXCEPTION_MARK; |
aoqi@0 | 5069 | instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
aoqi@0 | 5070 | |
aoqi@0 | 5071 | // return value |
aoqi@0 | 5072 | JavaValue result(T_BOOLEAN); |
aoqi@0 | 5073 | // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart |
aoqi@0 | 5074 | JavaCallArguments args; |
aoqi@0 | 5075 | args.push_int(unicode_ch); |
aoqi@0 | 5076 | |
aoqi@0 | 5077 | // public static boolean isJavaIdentifierStart(char ch); |
aoqi@0 | 5078 | JavaCalls::call_static(&result, |
aoqi@0 | 5079 | klass, |
aoqi@0 | 5080 | vmSymbols::isJavaIdentifierStart_name(), |
aoqi@0 | 5081 | vmSymbols::int_bool_signature(), |
aoqi@0 | 5082 | &args, |
aoqi@0 | 5083 | THREAD); |
aoqi@0 | 5084 | |
aoqi@0 | 5085 | if (HAS_PENDING_EXCEPTION) { |
aoqi@0 | 5086 | CLEAR_PENDING_EXCEPTION; |
aoqi@0 | 5087 | return 0; |
aoqi@0 | 5088 | } |
aoqi@0 | 5089 | if (result.get_jboolean()) { |
aoqi@0 | 5090 | continue; |
aoqi@0 | 5091 | } |
aoqi@0 | 5092 | |
aoqi@0 | 5093 | if (not_first_ch) { |
aoqi@0 | 5094 | // public static boolean isJavaIdentifierPart(char ch); |
aoqi@0 | 5095 | JavaCalls::call_static(&result, |
aoqi@0 | 5096 | klass, |
aoqi@0 | 5097 | vmSymbols::isJavaIdentifierPart_name(), |
aoqi@0 | 5098 | vmSymbols::int_bool_signature(), |
aoqi@0 | 5099 | &args, |
aoqi@0 | 5100 | THREAD); |
aoqi@0 | 5101 | |
aoqi@0 | 5102 | if (HAS_PENDING_EXCEPTION) { |
aoqi@0 | 5103 | CLEAR_PENDING_EXCEPTION; |
aoqi@0 | 5104 | return 0; |
aoqi@0 | 5105 | } |
aoqi@0 | 5106 | |
aoqi@0 | 5107 | if (result.get_jboolean()) { |
aoqi@0 | 5108 | continue; |
aoqi@0 | 5109 | } |
aoqi@0 | 5110 | } |
aoqi@0 | 5111 | } |
aoqi@0 | 5112 | return (not_first_ch) ? old_p : NULL; |
aoqi@0 | 5113 | } |
aoqi@0 | 5114 | return (not_first_ch) ? p : NULL; |
aoqi@0 | 5115 | } |
aoqi@0 | 5116 | |
aoqi@0 | 5117 | |
aoqi@0 | 5118 | // Take pointer to a string. Skip over the longest part of the string that could |
aoqi@0 | 5119 | // be taken as a field signature. Allow "void" if void_ok. |
aoqi@0 | 5120 | // Return a pointer to just past the signature. |
aoqi@0 | 5121 | // Return NULL if no legal signature is found. |
aoqi@0 | 5122 | char* ClassFileParser::skip_over_field_signature(char* signature, |
aoqi@0 | 5123 | bool void_ok, |
aoqi@0 | 5124 | unsigned int length, |
aoqi@0 | 5125 | TRAPS) { |
aoqi@0 | 5126 | unsigned int array_dim = 0; |
aoqi@0 | 5127 | while (length > 0) { |
aoqi@0 | 5128 | switch (signature[0]) { |
aoqi@0 | 5129 | case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } |
aoqi@0 | 5130 | case JVM_SIGNATURE_BOOLEAN: |
aoqi@0 | 5131 | case JVM_SIGNATURE_BYTE: |
aoqi@0 | 5132 | case JVM_SIGNATURE_CHAR: |
aoqi@0 | 5133 | case JVM_SIGNATURE_SHORT: |
aoqi@0 | 5134 | case JVM_SIGNATURE_INT: |
aoqi@0 | 5135 | case JVM_SIGNATURE_FLOAT: |
aoqi@0 | 5136 | case JVM_SIGNATURE_LONG: |
aoqi@0 | 5137 | case JVM_SIGNATURE_DOUBLE: |
aoqi@0 | 5138 | return signature + 1; |
aoqi@0 | 5139 | case JVM_SIGNATURE_CLASS: { |
aoqi@0 | 5140 | if (_major_version < JAVA_1_5_VERSION) { |
aoqi@0 | 5141 | // Skip over the class name if one is there |
aoqi@0 | 5142 | char* p = skip_over_field_name(signature + 1, true, --length); |
aoqi@0 | 5143 | |
aoqi@0 | 5144 | // The next character better be a semicolon |
aoqi@0 | 5145 | if (p && (p - signature) > 1 && p[0] == ';') { |
aoqi@0 | 5146 | return p + 1; |
aoqi@0 | 5147 | } |
aoqi@0 | 5148 | } else { |
aoqi@0 | 5149 | // 4900761: For class version > 48, any unicode is allowed in class name. |
aoqi@0 | 5150 | length--; |
aoqi@0 | 5151 | signature++; |
aoqi@0 | 5152 | while (length > 0 && signature[0] != ';') { |
aoqi@0 | 5153 | if (signature[0] == '.') { |
aoqi@0 | 5154 | classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); |
aoqi@0 | 5155 | } |
aoqi@0 | 5156 | length--; |
aoqi@0 | 5157 | signature++; |
aoqi@0 | 5158 | } |
aoqi@0 | 5159 | if (signature[0] == ';') { return signature + 1; } |
aoqi@0 | 5160 | } |
aoqi@0 | 5161 | |
aoqi@0 | 5162 | return NULL; |
aoqi@0 | 5163 | } |
aoqi@0 | 5164 | case JVM_SIGNATURE_ARRAY: |
aoqi@0 | 5165 | array_dim++; |
aoqi@0 | 5166 | if (array_dim > 255) { |
aoqi@0 | 5167 | // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. |
aoqi@0 | 5168 | classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); |
aoqi@0 | 5169 | } |
aoqi@0 | 5170 | // The rest of what's there better be a legal signature |
aoqi@0 | 5171 | signature++; |
aoqi@0 | 5172 | length--; |
aoqi@0 | 5173 | void_ok = false; |
aoqi@0 | 5174 | break; |
aoqi@0 | 5175 | |
aoqi@0 | 5176 | default: |
aoqi@0 | 5177 | return NULL; |
aoqi@0 | 5178 | } |
aoqi@0 | 5179 | } |
aoqi@0 | 5180 | return NULL; |
aoqi@0 | 5181 | } |