Tue, 20 Jul 2010 08:41:42 -0700
6964170: Verifier crashes
Summary: Check if klassOop != NULL rather than klass_part != NULL
Reviewed-by: kamg, never
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | #include "incls/_precompiled.incl" |
duke@435 | 26 | #include "incls/_classFileParser.cpp.incl" |
duke@435 | 27 | |
kamg@1941 | 28 | // We generally try to create the oops directly when parsing, rather than |
kamg@1941 | 29 | // allocating temporary data structures and copying the bytes twice. A |
kamg@1941 | 30 | // temporary area is only needed when parsing utf8 entries in the constant |
kamg@1941 | 31 | // pool and when parsing line number tables. |
duke@435 | 32 | |
duke@435 | 33 | // We add assert in debug mode when class format is not checked. |
duke@435 | 34 | |
duke@435 | 35 | #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE |
duke@435 | 36 | #define JAVA_MIN_SUPPORTED_VERSION 45 |
kamg@571 | 37 | #define JAVA_MAX_SUPPORTED_VERSION 51 |
duke@435 | 38 | #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
duke@435 | 39 | |
duke@435 | 40 | // Used for two backward compatibility reasons: |
duke@435 | 41 | // - to check for new additions to the class file format in JDK1.5 |
duke@435 | 42 | // - to check for bug fixes in the format checker in JDK1.5 |
duke@435 | 43 | #define JAVA_1_5_VERSION 49 |
duke@435 | 44 | |
duke@435 | 45 | // Used for backward compatibility reasons: |
duke@435 | 46 | // - to check for javac bug fixes that happened after 1.5 |
kamg@611 | 47 | // - also used as the max version when running in jdk6 |
duke@435 | 48 | #define JAVA_6_VERSION 50 |
duke@435 | 49 | |
kamg@1941 | 50 | // Used for backward compatibility reasons: |
kamg@1941 | 51 | // - to check NameAndType_info signatures more aggressively |
kamg@1941 | 52 | #define JAVA_7_VERSION 51 |
kamg@1941 | 53 | |
duke@435 | 54 | |
duke@435 | 55 | void ClassFileParser::parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS) { |
duke@435 | 56 | // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
duke@435 | 57 | // this function (_current can be allocated in a register, with scalar |
duke@435 | 58 | // replacement of aggregates). The _current pointer is copied back to |
duke@435 | 59 | // stream() when this function returns. DON'T call another method within |
duke@435 | 60 | // this method that uses stream(). |
duke@435 | 61 | ClassFileStream* cfs0 = stream(); |
duke@435 | 62 | ClassFileStream cfs1 = *cfs0; |
duke@435 | 63 | ClassFileStream* cfs = &cfs1; |
duke@435 | 64 | #ifdef ASSERT |
duke@435 | 65 | u1* old_current = cfs0->current(); |
duke@435 | 66 | #endif |
duke@435 | 67 | |
duke@435 | 68 | // Used for batching symbol allocations. |
duke@435 | 69 | const char* names[SymbolTable::symbol_alloc_batch_size]; |
duke@435 | 70 | int lengths[SymbolTable::symbol_alloc_batch_size]; |
duke@435 | 71 | int indices[SymbolTable::symbol_alloc_batch_size]; |
duke@435 | 72 | unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; |
duke@435 | 73 | int names_count = 0; |
duke@435 | 74 | |
duke@435 | 75 | // parsing Index 0 is unused |
duke@435 | 76 | for (int index = 1; index < length; index++) { |
duke@435 | 77 | // Each of the following case guarantees one more byte in the stream |
duke@435 | 78 | // for the following tag or the access_flags following constant pool, |
duke@435 | 79 | // so we don't need bounds-check for reading tag. |
duke@435 | 80 | u1 tag = cfs->get_u1_fast(); |
duke@435 | 81 | switch (tag) { |
duke@435 | 82 | case JVM_CONSTANT_Class : |
duke@435 | 83 | { |
duke@435 | 84 | cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags |
duke@435 | 85 | u2 name_index = cfs->get_u2_fast(); |
duke@435 | 86 | cp->klass_index_at_put(index, name_index); |
duke@435 | 87 | } |
duke@435 | 88 | break; |
duke@435 | 89 | case JVM_CONSTANT_Fieldref : |
duke@435 | 90 | { |
duke@435 | 91 | cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags |
duke@435 | 92 | u2 class_index = cfs->get_u2_fast(); |
duke@435 | 93 | u2 name_and_type_index = cfs->get_u2_fast(); |
duke@435 | 94 | cp->field_at_put(index, class_index, name_and_type_index); |
duke@435 | 95 | } |
duke@435 | 96 | break; |
duke@435 | 97 | case JVM_CONSTANT_Methodref : |
duke@435 | 98 | { |
duke@435 | 99 | cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags |
duke@435 | 100 | u2 class_index = cfs->get_u2_fast(); |
duke@435 | 101 | u2 name_and_type_index = cfs->get_u2_fast(); |
duke@435 | 102 | cp->method_at_put(index, class_index, name_and_type_index); |
duke@435 | 103 | } |
duke@435 | 104 | break; |
duke@435 | 105 | case JVM_CONSTANT_InterfaceMethodref : |
duke@435 | 106 | { |
duke@435 | 107 | cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags |
duke@435 | 108 | u2 class_index = cfs->get_u2_fast(); |
duke@435 | 109 | u2 name_and_type_index = cfs->get_u2_fast(); |
duke@435 | 110 | cp->interface_method_at_put(index, class_index, name_and_type_index); |
duke@435 | 111 | } |
duke@435 | 112 | break; |
duke@435 | 113 | case JVM_CONSTANT_String : |
duke@435 | 114 | { |
duke@435 | 115 | cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags |
duke@435 | 116 | u2 string_index = cfs->get_u2_fast(); |
duke@435 | 117 | cp->string_index_at_put(index, string_index); |
duke@435 | 118 | } |
duke@435 | 119 | break; |
jrose@1957 | 120 | case JVM_CONSTANT_MethodHandle : |
jrose@1957 | 121 | case JVM_CONSTANT_MethodType : |
jrose@1957 | 122 | if (!EnableMethodHandles || |
jrose@1957 | 123 | _major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
jrose@1957 | 124 | classfile_parse_error( |
jrose@1957 | 125 | (!EnableInvokeDynamic ? |
jrose@1957 | 126 | "This JVM does not support constant tag %u in class file %s" : |
jrose@1957 | 127 | "Class file version does not support constant tag %u in class file %s"), |
jrose@1957 | 128 | tag, CHECK); |
jrose@1957 | 129 | } |
jrose@1957 | 130 | if (tag == JVM_CONSTANT_MethodHandle) { |
jrose@1957 | 131 | cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags |
jrose@1957 | 132 | u1 ref_kind = cfs->get_u1_fast(); |
jrose@1957 | 133 | u2 method_index = cfs->get_u2_fast(); |
jrose@1957 | 134 | cp->method_handle_index_at_put(index, ref_kind, method_index); |
jrose@1957 | 135 | } else if (tag == JVM_CONSTANT_MethodType) { |
jrose@1957 | 136 | cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags |
jrose@1957 | 137 | u2 signature_index = cfs->get_u2_fast(); |
jrose@1957 | 138 | cp->method_type_index_at_put(index, signature_index); |
jrose@1957 | 139 | } else { |
jrose@1957 | 140 | ShouldNotReachHere(); |
jrose@1957 | 141 | } |
jrose@1957 | 142 | break; |
duke@435 | 143 | case JVM_CONSTANT_Integer : |
duke@435 | 144 | { |
duke@435 | 145 | cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags |
duke@435 | 146 | u4 bytes = cfs->get_u4_fast(); |
duke@435 | 147 | cp->int_at_put(index, (jint) bytes); |
duke@435 | 148 | } |
duke@435 | 149 | break; |
duke@435 | 150 | case JVM_CONSTANT_Float : |
duke@435 | 151 | { |
duke@435 | 152 | cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags |
duke@435 | 153 | u4 bytes = cfs->get_u4_fast(); |
duke@435 | 154 | cp->float_at_put(index, *(jfloat*)&bytes); |
duke@435 | 155 | } |
duke@435 | 156 | break; |
duke@435 | 157 | case JVM_CONSTANT_Long : |
duke@435 | 158 | // A mangled type might cause you to overrun allocated memory |
duke@435 | 159 | guarantee_property(index+1 < length, |
duke@435 | 160 | "Invalid constant pool entry %u in class file %s", |
duke@435 | 161 | index, CHECK); |
duke@435 | 162 | { |
duke@435 | 163 | cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags |
duke@435 | 164 | u8 bytes = cfs->get_u8_fast(); |
duke@435 | 165 | cp->long_at_put(index, bytes); |
duke@435 | 166 | } |
duke@435 | 167 | index++; // Skip entry following eigth-byte constant, see JVM book p. 98 |
duke@435 | 168 | break; |
duke@435 | 169 | case JVM_CONSTANT_Double : |
duke@435 | 170 | // A mangled type might cause you to overrun allocated memory |
duke@435 | 171 | guarantee_property(index+1 < length, |
duke@435 | 172 | "Invalid constant pool entry %u in class file %s", |
duke@435 | 173 | index, CHECK); |
duke@435 | 174 | { |
duke@435 | 175 | cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags |
duke@435 | 176 | u8 bytes = cfs->get_u8_fast(); |
duke@435 | 177 | cp->double_at_put(index, *(jdouble*)&bytes); |
duke@435 | 178 | } |
duke@435 | 179 | index++; // Skip entry following eigth-byte constant, see JVM book p. 98 |
duke@435 | 180 | break; |
duke@435 | 181 | case JVM_CONSTANT_NameAndType : |
duke@435 | 182 | { |
duke@435 | 183 | cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags |
duke@435 | 184 | u2 name_index = cfs->get_u2_fast(); |
duke@435 | 185 | u2 signature_index = cfs->get_u2_fast(); |
duke@435 | 186 | cp->name_and_type_at_put(index, name_index, signature_index); |
duke@435 | 187 | } |
duke@435 | 188 | break; |
duke@435 | 189 | case JVM_CONSTANT_Utf8 : |
duke@435 | 190 | { |
duke@435 | 191 | cfs->guarantee_more(2, CHECK); // utf8_length |
duke@435 | 192 | u2 utf8_length = cfs->get_u2_fast(); |
duke@435 | 193 | u1* utf8_buffer = cfs->get_u1_buffer(); |
duke@435 | 194 | assert(utf8_buffer != NULL, "null utf8 buffer"); |
duke@435 | 195 | // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. |
duke@435 | 196 | cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags |
duke@435 | 197 | cfs->skip_u1_fast(utf8_length); |
jrose@866 | 198 | |
duke@435 | 199 | // Before storing the symbol, make sure it's legal |
duke@435 | 200 | if (_need_verify) { |
duke@435 | 201 | verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); |
duke@435 | 202 | } |
duke@435 | 203 | |
jrose@866 | 204 | if (AnonymousClasses && has_cp_patch_at(index)) { |
jrose@866 | 205 | Handle patch = clear_cp_patch_at(index); |
jrose@866 | 206 | guarantee_property(java_lang_String::is_instance(patch()), |
jrose@866 | 207 | "Illegal utf8 patch at %d in class file %s", |
jrose@866 | 208 | index, CHECK); |
jrose@866 | 209 | char* str = java_lang_String::as_utf8_string(patch()); |
jrose@866 | 210 | // (could use java_lang_String::as_symbol instead, but might as well batch them) |
jrose@866 | 211 | utf8_buffer = (u1*) str; |
jrose@866 | 212 | utf8_length = (int) strlen(str); |
jrose@866 | 213 | } |
jrose@866 | 214 | |
duke@435 | 215 | unsigned int hash; |
duke@435 | 216 | symbolOop result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
duke@435 | 217 | if (result == NULL) { |
duke@435 | 218 | names[names_count] = (char*)utf8_buffer; |
duke@435 | 219 | lengths[names_count] = utf8_length; |
duke@435 | 220 | indices[names_count] = index; |
duke@435 | 221 | hashValues[names_count++] = hash; |
duke@435 | 222 | if (names_count == SymbolTable::symbol_alloc_batch_size) { |
duke@435 | 223 | oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK); |
duke@435 | 224 | names_count = 0; |
duke@435 | 225 | } |
duke@435 | 226 | } else { |
duke@435 | 227 | cp->symbol_at_put(index, result); |
duke@435 | 228 | } |
duke@435 | 229 | } |
duke@435 | 230 | break; |
duke@435 | 231 | default: |
duke@435 | 232 | classfile_parse_error( |
duke@435 | 233 | "Unknown constant tag %u in class file %s", tag, CHECK); |
duke@435 | 234 | break; |
duke@435 | 235 | } |
duke@435 | 236 | } |
duke@435 | 237 | |
duke@435 | 238 | // Allocate the remaining symbols |
duke@435 | 239 | if (names_count > 0) { |
duke@435 | 240 | oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK); |
duke@435 | 241 | } |
duke@435 | 242 | |
duke@435 | 243 | // Copy _current pointer of local copy back to stream(). |
duke@435 | 244 | #ifdef ASSERT |
duke@435 | 245 | assert(cfs0->current() == old_current, "non-exclusive use of stream()"); |
duke@435 | 246 | #endif |
duke@435 | 247 | cfs0->set_current(cfs1.current()); |
duke@435 | 248 | } |
duke@435 | 249 | |
duke@435 | 250 | bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
duke@435 | 251 | |
duke@435 | 252 | constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) { |
duke@435 | 253 | ClassFileStream* cfs = stream(); |
duke@435 | 254 | constantPoolHandle nullHandle; |
duke@435 | 255 | |
duke@435 | 256 | cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag |
duke@435 | 257 | u2 length = cfs->get_u2_fast(); |
duke@435 | 258 | guarantee_property( |
duke@435 | 259 | length >= 1, "Illegal constant pool size %u in class file %s", |
duke@435 | 260 | length, CHECK_(nullHandle)); |
duke@435 | 261 | constantPoolOop constant_pool = |
jmasa@953 | 262 | oopFactory::new_constantPool(length, |
jmasa@953 | 263 | methodOopDesc::IsSafeConc, |
jmasa@953 | 264 | CHECK_(nullHandle)); |
duke@435 | 265 | constantPoolHandle cp (THREAD, constant_pool); |
duke@435 | 266 | |
duke@435 | 267 | cp->set_partially_loaded(); // Enables heap verify to work on partial constantPoolOops |
duke@435 | 268 | |
duke@435 | 269 | // parsing constant pool entries |
duke@435 | 270 | parse_constant_pool_entries(cp, length, CHECK_(nullHandle)); |
duke@435 | 271 | |
duke@435 | 272 | int index = 1; // declared outside of loops for portability |
duke@435 | 273 | |
duke@435 | 274 | // first verification pass - validate cross references and fixup class and string constants |
duke@435 | 275 | for (index = 1; index < length; index++) { // Index 0 is unused |
duke@435 | 276 | switch (cp->tag_at(index).value()) { |
duke@435 | 277 | case JVM_CONSTANT_Class : |
duke@435 | 278 | ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present |
duke@435 | 279 | break; |
duke@435 | 280 | case JVM_CONSTANT_Fieldref : |
duke@435 | 281 | // fall through |
duke@435 | 282 | case JVM_CONSTANT_Methodref : |
duke@435 | 283 | // fall through |
duke@435 | 284 | case JVM_CONSTANT_InterfaceMethodref : { |
duke@435 | 285 | if (!_need_verify) break; |
duke@435 | 286 | int klass_ref_index = cp->klass_ref_index_at(index); |
duke@435 | 287 | int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); |
duke@435 | 288 | check_property(valid_cp_range(klass_ref_index, length) && |
jrose@866 | 289 | is_klass_reference(cp, klass_ref_index), |
duke@435 | 290 | "Invalid constant pool index %u in class file %s", |
duke@435 | 291 | klass_ref_index, |
duke@435 | 292 | CHECK_(nullHandle)); |
duke@435 | 293 | check_property(valid_cp_range(name_and_type_ref_index, length) && |
duke@435 | 294 | cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
duke@435 | 295 | "Invalid constant pool index %u in class file %s", |
duke@435 | 296 | name_and_type_ref_index, |
duke@435 | 297 | CHECK_(nullHandle)); |
duke@435 | 298 | break; |
duke@435 | 299 | } |
duke@435 | 300 | case JVM_CONSTANT_String : |
duke@435 | 301 | ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present |
duke@435 | 302 | break; |
duke@435 | 303 | case JVM_CONSTANT_Integer : |
duke@435 | 304 | break; |
duke@435 | 305 | case JVM_CONSTANT_Float : |
duke@435 | 306 | break; |
duke@435 | 307 | case JVM_CONSTANT_Long : |
duke@435 | 308 | case JVM_CONSTANT_Double : |
duke@435 | 309 | index++; |
duke@435 | 310 | check_property( |
duke@435 | 311 | (index < length && cp->tag_at(index).is_invalid()), |
duke@435 | 312 | "Improper constant pool long/double index %u in class file %s", |
duke@435 | 313 | index, CHECK_(nullHandle)); |
duke@435 | 314 | break; |
duke@435 | 315 | case JVM_CONSTANT_NameAndType : { |
duke@435 | 316 | if (!_need_verify) break; |
duke@435 | 317 | int name_ref_index = cp->name_ref_index_at(index); |
duke@435 | 318 | int signature_ref_index = cp->signature_ref_index_at(index); |
duke@435 | 319 | check_property( |
duke@435 | 320 | valid_cp_range(name_ref_index, length) && |
duke@435 | 321 | cp->tag_at(name_ref_index).is_utf8(), |
duke@435 | 322 | "Invalid constant pool index %u in class file %s", |
duke@435 | 323 | name_ref_index, CHECK_(nullHandle)); |
duke@435 | 324 | check_property( |
duke@435 | 325 | valid_cp_range(signature_ref_index, length) && |
duke@435 | 326 | cp->tag_at(signature_ref_index).is_utf8(), |
duke@435 | 327 | "Invalid constant pool index %u in class file %s", |
duke@435 | 328 | signature_ref_index, CHECK_(nullHandle)); |
duke@435 | 329 | break; |
duke@435 | 330 | } |
duke@435 | 331 | case JVM_CONSTANT_Utf8 : |
duke@435 | 332 | break; |
duke@435 | 333 | case JVM_CONSTANT_UnresolvedClass : // fall-through |
duke@435 | 334 | case JVM_CONSTANT_UnresolvedClassInError: |
duke@435 | 335 | ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present |
duke@435 | 336 | break; |
duke@435 | 337 | case JVM_CONSTANT_ClassIndex : |
duke@435 | 338 | { |
duke@435 | 339 | int class_index = cp->klass_index_at(index); |
duke@435 | 340 | check_property( |
duke@435 | 341 | valid_cp_range(class_index, length) && |
duke@435 | 342 | cp->tag_at(class_index).is_utf8(), |
duke@435 | 343 | "Invalid constant pool index %u in class file %s", |
duke@435 | 344 | class_index, CHECK_(nullHandle)); |
duke@435 | 345 | cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); |
duke@435 | 346 | } |
duke@435 | 347 | break; |
duke@435 | 348 | case JVM_CONSTANT_UnresolvedString : |
duke@435 | 349 | ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present |
duke@435 | 350 | break; |
duke@435 | 351 | case JVM_CONSTANT_StringIndex : |
duke@435 | 352 | { |
duke@435 | 353 | int string_index = cp->string_index_at(index); |
duke@435 | 354 | check_property( |
duke@435 | 355 | valid_cp_range(string_index, length) && |
duke@435 | 356 | cp->tag_at(string_index).is_utf8(), |
duke@435 | 357 | "Invalid constant pool index %u in class file %s", |
duke@435 | 358 | string_index, CHECK_(nullHandle)); |
duke@435 | 359 | symbolOop sym = cp->symbol_at(string_index); |
duke@435 | 360 | cp->unresolved_string_at_put(index, sym); |
duke@435 | 361 | } |
duke@435 | 362 | break; |
jrose@1957 | 363 | case JVM_CONSTANT_MethodHandle : |
jrose@1957 | 364 | { |
jrose@1957 | 365 | int ref_index = cp->method_handle_index_at(index); |
jrose@1957 | 366 | check_property( |
jrose@1957 | 367 | valid_cp_range(ref_index, length) && |
jrose@1957 | 368 | EnableMethodHandles, |
jrose@1957 | 369 | "Invalid constant pool index %u in class file %s", |
jrose@1957 | 370 | ref_index, CHECK_(nullHandle)); |
jrose@1957 | 371 | constantTag tag = cp->tag_at(ref_index); |
jrose@1957 | 372 | int ref_kind = cp->method_handle_ref_kind_at(index); |
jrose@1957 | 373 | switch (ref_kind) { |
jrose@1957 | 374 | case JVM_REF_getField: |
jrose@1957 | 375 | case JVM_REF_getStatic: |
jrose@1957 | 376 | case JVM_REF_putField: |
jrose@1957 | 377 | case JVM_REF_putStatic: |
jrose@1957 | 378 | check_property( |
jrose@1957 | 379 | tag.is_field(), |
jrose@1957 | 380 | "Invalid constant pool index %u in class file %s (not a field)", |
jrose@1957 | 381 | ref_index, CHECK_(nullHandle)); |
jrose@1957 | 382 | break; |
jrose@1957 | 383 | case JVM_REF_invokeVirtual: |
jrose@1957 | 384 | case JVM_REF_invokeStatic: |
jrose@1957 | 385 | case JVM_REF_invokeSpecial: |
jrose@1957 | 386 | case JVM_REF_newInvokeSpecial: |
jrose@1957 | 387 | check_property( |
jrose@1957 | 388 | tag.is_method(), |
jrose@1957 | 389 | "Invalid constant pool index %u in class file %s (not a method)", |
jrose@1957 | 390 | ref_index, CHECK_(nullHandle)); |
jrose@1957 | 391 | break; |
jrose@1957 | 392 | case JVM_REF_invokeInterface: |
jrose@1957 | 393 | check_property( |
jrose@1957 | 394 | tag.is_interface_method(), |
jrose@1957 | 395 | "Invalid constant pool index %u in class file %s (not an interface method)", |
jrose@1957 | 396 | ref_index, CHECK_(nullHandle)); |
jrose@1957 | 397 | break; |
jrose@1957 | 398 | default: |
jrose@1957 | 399 | classfile_parse_error( |
jrose@1957 | 400 | "Bad method handle kind at constant pool index %u in class file %s", |
jrose@1957 | 401 | index, CHECK_(nullHandle)); |
jrose@1957 | 402 | } |
jrose@1957 | 403 | // Keep the ref_index unchanged. It will be indirected at link-time. |
jrose@1957 | 404 | } |
jrose@1957 | 405 | break; |
jrose@1957 | 406 | case JVM_CONSTANT_MethodType : |
jrose@1957 | 407 | { |
jrose@1957 | 408 | int ref_index = cp->method_type_index_at(index); |
jrose@1957 | 409 | check_property( |
jrose@1957 | 410 | valid_cp_range(ref_index, length) && |
jrose@1957 | 411 | cp->tag_at(ref_index).is_utf8() && |
jrose@1957 | 412 | EnableMethodHandles, |
jrose@1957 | 413 | "Invalid constant pool index %u in class file %s", |
jrose@1957 | 414 | ref_index, CHECK_(nullHandle)); |
jrose@1957 | 415 | } |
jrose@1957 | 416 | break; |
duke@435 | 417 | default: |
jcoomes@1845 | 418 | fatal(err_msg("bad constant pool tag value %u", |
jcoomes@1845 | 419 | cp->tag_at(index).value())); |
duke@435 | 420 | ShouldNotReachHere(); |
duke@435 | 421 | break; |
duke@435 | 422 | } // end of switch |
duke@435 | 423 | } // end of for |
duke@435 | 424 | |
jrose@866 | 425 | if (_cp_patches != NULL) { |
jrose@866 | 426 | // need to treat this_class specially... |
jrose@866 | 427 | assert(AnonymousClasses, ""); |
jrose@866 | 428 | int this_class_index; |
jrose@866 | 429 | { |
jrose@866 | 430 | cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
jrose@866 | 431 | u1* mark = cfs->current(); |
jrose@866 | 432 | u2 flags = cfs->get_u2_fast(); |
jrose@866 | 433 | this_class_index = cfs->get_u2_fast(); |
jrose@866 | 434 | cfs->set_current(mark); // revert to mark |
jrose@866 | 435 | } |
jrose@866 | 436 | |
jrose@866 | 437 | for (index = 1; index < length; index++) { // Index 0 is unused |
jrose@866 | 438 | if (has_cp_patch_at(index)) { |
jrose@866 | 439 | guarantee_property(index != this_class_index, |
jrose@866 | 440 | "Illegal constant pool patch to self at %d in class file %s", |
jrose@866 | 441 | index, CHECK_(nullHandle)); |
jrose@866 | 442 | patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
jrose@866 | 443 | } |
jrose@866 | 444 | } |
jrose@866 | 445 | // Ensure that all the patches have been used. |
jrose@866 | 446 | for (index = 0; index < _cp_patches->length(); index++) { |
jrose@866 | 447 | guarantee_property(!has_cp_patch_at(index), |
jrose@866 | 448 | "Unused constant pool patch at %d in class file %s", |
jrose@866 | 449 | index, CHECK_(nullHandle)); |
jrose@866 | 450 | } |
jrose@866 | 451 | } |
jrose@866 | 452 | |
duke@435 | 453 | if (!_need_verify) { |
duke@435 | 454 | return cp; |
duke@435 | 455 | } |
duke@435 | 456 | |
duke@435 | 457 | // second verification pass - checks the strings are of the right format. |
jrose@866 | 458 | // but not yet to the other entries |
duke@435 | 459 | for (index = 1; index < length; index++) { |
duke@435 | 460 | jbyte tag = cp->tag_at(index).value(); |
duke@435 | 461 | switch (tag) { |
duke@435 | 462 | case JVM_CONSTANT_UnresolvedClass: { |
duke@435 | 463 | symbolHandle class_name(THREAD, cp->unresolved_klass_at(index)); |
jrose@866 | 464 | // check the name, even if _cp_patches will overwrite it |
duke@435 | 465 | verify_legal_class_name(class_name, CHECK_(nullHandle)); |
duke@435 | 466 | break; |
duke@435 | 467 | } |
kamg@1941 | 468 | case JVM_CONSTANT_NameAndType: { |
kamg@1941 | 469 | if (_need_verify && _major_version >= JAVA_7_VERSION) { |
kamg@1941 | 470 | int sig_index = cp->signature_ref_index_at(index); |
kamg@1941 | 471 | int name_index = cp->name_ref_index_at(index); |
kamg@1941 | 472 | symbolHandle name(THREAD, cp->symbol_at(name_index)); |
kamg@1941 | 473 | symbolHandle sig(THREAD, cp->symbol_at(sig_index)); |
kamg@1941 | 474 | if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
kamg@1941 | 475 | verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
kamg@1941 | 476 | } else { |
kamg@1941 | 477 | verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
kamg@1941 | 478 | } |
kamg@1941 | 479 | } |
kamg@1941 | 480 | break; |
kamg@1941 | 481 | } |
duke@435 | 482 | case JVM_CONSTANT_Fieldref: |
duke@435 | 483 | case JVM_CONSTANT_Methodref: |
duke@435 | 484 | case JVM_CONSTANT_InterfaceMethodref: { |
duke@435 | 485 | int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); |
duke@435 | 486 | // already verified to be utf8 |
duke@435 | 487 | int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); |
duke@435 | 488 | // already verified to be utf8 |
duke@435 | 489 | int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); |
duke@435 | 490 | symbolHandle name(THREAD, cp->symbol_at(name_ref_index)); |
duke@435 | 491 | symbolHandle signature(THREAD, cp->symbol_at(signature_ref_index)); |
duke@435 | 492 | if (tag == JVM_CONSTANT_Fieldref) { |
duke@435 | 493 | verify_legal_field_name(name, CHECK_(nullHandle)); |
kamg@1941 | 494 | if (_need_verify && _major_version >= JAVA_7_VERSION) { |
kamg@1941 | 495 | // Signature is verified above, when iterating NameAndType_info. |
kamg@1941 | 496 | // Need only to be sure it's the right type. |
kamg@1941 | 497 | if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
kamg@1941 | 498 | throwIllegalSignature( |
kamg@1941 | 499 | "Field", name, signature, CHECK_(nullHandle)); |
kamg@1941 | 500 | } |
kamg@1941 | 501 | } else { |
kamg@1941 | 502 | verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
kamg@1941 | 503 | } |
duke@435 | 504 | } else { |
duke@435 | 505 | verify_legal_method_name(name, CHECK_(nullHandle)); |
kamg@1941 | 506 | if (_need_verify && _major_version >= JAVA_7_VERSION) { |
kamg@1941 | 507 | // Signature is verified above, when iterating NameAndType_info. |
kamg@1941 | 508 | // Need only to be sure it's the right type. |
kamg@1941 | 509 | if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
kamg@1941 | 510 | throwIllegalSignature( |
kamg@1941 | 511 | "Method", name, signature, CHECK_(nullHandle)); |
kamg@1941 | 512 | } |
kamg@1941 | 513 | } else { |
kamg@1941 | 514 | verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
kamg@1941 | 515 | } |
duke@435 | 516 | if (tag == JVM_CONSTANT_Methodref) { |
duke@435 | 517 | // 4509014: If a class method name begins with '<', it must be "<init>". |
duke@435 | 518 | assert(!name.is_null(), "method name in constant pool is null"); |
duke@435 | 519 | unsigned int name_len = name->utf8_length(); |
duke@435 | 520 | assert(name_len > 0, "bad method name"); // already verified as legal name |
duke@435 | 521 | if (name->byte_at(0) == '<') { |
duke@435 | 522 | if (name() != vmSymbols::object_initializer_name()) { |
duke@435 | 523 | classfile_parse_error( |
duke@435 | 524 | "Bad method name at constant pool index %u in class file %s", |
duke@435 | 525 | name_ref_index, CHECK_(nullHandle)); |
duke@435 | 526 | } |
duke@435 | 527 | } |
duke@435 | 528 | } |
duke@435 | 529 | } |
duke@435 | 530 | break; |
duke@435 | 531 | } |
jrose@1957 | 532 | case JVM_CONSTANT_MethodHandle: { |
jrose@1957 | 533 | int ref_index = cp->method_handle_index_at(index); |
jrose@1957 | 534 | int ref_kind = cp->method_handle_ref_kind_at(index); |
jrose@1957 | 535 | switch (ref_kind) { |
jrose@1957 | 536 | case JVM_REF_invokeVirtual: |
jrose@1957 | 537 | case JVM_REF_invokeStatic: |
jrose@1957 | 538 | case JVM_REF_invokeSpecial: |
jrose@1957 | 539 | case JVM_REF_newInvokeSpecial: |
jrose@1957 | 540 | { |
jrose@1957 | 541 | int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); |
jrose@1957 | 542 | int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); |
jrose@1957 | 543 | symbolHandle name(THREAD, cp->symbol_at(name_ref_index)); |
jrose@1957 | 544 | if (ref_kind == JVM_REF_newInvokeSpecial) { |
jrose@1957 | 545 | if (name() != vmSymbols::object_initializer_name()) { |
jrose@1957 | 546 | classfile_parse_error( |
jrose@1957 | 547 | "Bad constructor name at constant pool index %u in class file %s", |
jrose@1957 | 548 | name_ref_index, CHECK_(nullHandle)); |
jrose@1957 | 549 | } |
jrose@1957 | 550 | } else { |
jrose@1957 | 551 | if (name() == vmSymbols::object_initializer_name()) { |
jrose@1957 | 552 | classfile_parse_error( |
jrose@1957 | 553 | "Bad method name at constant pool index %u in class file %s", |
jrose@1957 | 554 | name_ref_index, CHECK_(nullHandle)); |
jrose@1957 | 555 | } |
jrose@1957 | 556 | } |
jrose@1957 | 557 | } |
jrose@1957 | 558 | break; |
jrose@1957 | 559 | // Other ref_kinds are already fully checked in previous pass. |
jrose@1957 | 560 | } |
jrose@1957 | 561 | break; |
jrose@1957 | 562 | } |
jrose@1957 | 563 | case JVM_CONSTANT_MethodType: { |
jrose@1957 | 564 | symbolHandle no_name = vmSymbolHandles::type_name(); // place holder |
jrose@1957 | 565 | symbolHandle signature(THREAD, cp->method_type_signature_at(index)); |
jrose@1957 | 566 | verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
jrose@1957 | 567 | break; |
jrose@1957 | 568 | } |
duke@435 | 569 | } // end of switch |
duke@435 | 570 | } // end of for |
duke@435 | 571 | |
duke@435 | 572 | return cp; |
duke@435 | 573 | } |
duke@435 | 574 | |
duke@435 | 575 | |
jrose@866 | 576 | void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
jrose@866 | 577 | assert(AnonymousClasses, ""); |
jrose@866 | 578 | BasicType patch_type = T_VOID; |
jrose@866 | 579 | switch (cp->tag_at(index).value()) { |
jrose@866 | 580 | |
jrose@866 | 581 | case JVM_CONSTANT_UnresolvedClass : |
jrose@866 | 582 | // Patching a class means pre-resolving it. |
jrose@866 | 583 | // The name in the constant pool is ignored. |
jrose@1957 | 584 | if (java_lang_Class::is_instance(patch())) { |
jrose@866 | 585 | guarantee_property(!java_lang_Class::is_primitive(patch()), |
jrose@866 | 586 | "Illegal class patch at %d in class file %s", |
jrose@866 | 587 | index, CHECK); |
jrose@866 | 588 | cp->klass_at_put(index, java_lang_Class::as_klassOop(patch())); |
jrose@866 | 589 | } else { |
jrose@866 | 590 | guarantee_property(java_lang_String::is_instance(patch()), |
jrose@866 | 591 | "Illegal class patch at %d in class file %s", |
jrose@866 | 592 | index, CHECK); |
jrose@866 | 593 | symbolHandle name = java_lang_String::as_symbol(patch(), CHECK); |
jrose@866 | 594 | cp->unresolved_klass_at_put(index, name()); |
jrose@866 | 595 | } |
jrose@866 | 596 | break; |
jrose@866 | 597 | |
jrose@866 | 598 | case JVM_CONSTANT_UnresolvedString : |
jrose@866 | 599 | // Patching a string means pre-resolving it. |
jrose@866 | 600 | // The spelling in the constant pool is ignored. |
jrose@866 | 601 | // The constant reference may be any object whatever. |
jrose@866 | 602 | // If it is not a real interned string, the constant is referred |
jrose@866 | 603 | // to as a "pseudo-string", and must be presented to the CP |
jrose@866 | 604 | // explicitly, because it may require scavenging. |
jrose@866 | 605 | cp->pseudo_string_at_put(index, patch()); |
jrose@866 | 606 | break; |
jrose@866 | 607 | |
jrose@866 | 608 | case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
jrose@866 | 609 | case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
jrose@866 | 610 | case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
jrose@866 | 611 | case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
jrose@866 | 612 | patch_prim: |
jrose@866 | 613 | { |
jrose@866 | 614 | jvalue value; |
jrose@866 | 615 | BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
jrose@866 | 616 | guarantee_property(value_type == patch_type, |
jrose@866 | 617 | "Illegal primitive patch at %d in class file %s", |
jrose@866 | 618 | index, CHECK); |
jrose@866 | 619 | switch (value_type) { |
jrose@866 | 620 | case T_INT: cp->int_at_put(index, value.i); break; |
jrose@866 | 621 | case T_FLOAT: cp->float_at_put(index, value.f); break; |
jrose@866 | 622 | case T_LONG: cp->long_at_put(index, value.j); break; |
jrose@866 | 623 | case T_DOUBLE: cp->double_at_put(index, value.d); break; |
jrose@866 | 624 | default: assert(false, ""); |
jrose@866 | 625 | } |
jrose@866 | 626 | } |
jrose@866 | 627 | break; |
jrose@866 | 628 | |
jrose@866 | 629 | default: |
jrose@866 | 630 | // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
jrose@866 | 631 | guarantee_property(!has_cp_patch_at(index), |
jrose@866 | 632 | "Illegal unexpected patch at %d in class file %s", |
jrose@866 | 633 | index, CHECK); |
jrose@866 | 634 | return; |
jrose@866 | 635 | } |
jrose@866 | 636 | |
jrose@866 | 637 | // On fall-through, mark the patch as used. |
jrose@866 | 638 | clear_cp_patch_at(index); |
jrose@866 | 639 | } |
jrose@866 | 640 | |
jrose@866 | 641 | |
jrose@866 | 642 | |
duke@435 | 643 | class NameSigHash: public ResourceObj { |
duke@435 | 644 | public: |
duke@435 | 645 | symbolOop _name; // name |
duke@435 | 646 | symbolOop _sig; // signature |
duke@435 | 647 | NameSigHash* _next; // Next entry in hash table |
duke@435 | 648 | }; |
duke@435 | 649 | |
duke@435 | 650 | |
duke@435 | 651 | #define HASH_ROW_SIZE 256 |
duke@435 | 652 | |
duke@435 | 653 | unsigned int hash(symbolOop name, symbolOop sig) { |
duke@435 | 654 | unsigned int raw_hash = 0; |
duke@435 | 655 | raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); |
duke@435 | 656 | raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; |
duke@435 | 657 | |
duke@435 | 658 | return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; |
duke@435 | 659 | } |
duke@435 | 660 | |
duke@435 | 661 | |
duke@435 | 662 | void initialize_hashtable(NameSigHash** table) { |
duke@435 | 663 | memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); |
duke@435 | 664 | } |
duke@435 | 665 | |
duke@435 | 666 | // Return false if the name/sig combination is found in table. |
duke@435 | 667 | // Return true if no duplicate is found. And name/sig is added as a new entry in table. |
duke@435 | 668 | // The old format checker uses heap sort to find duplicates. |
duke@435 | 669 | // NOTE: caller should guarantee that GC doesn't happen during the life cycle |
duke@435 | 670 | // of table since we don't expect symbolOop's to move. |
duke@435 | 671 | bool put_after_lookup(symbolOop name, symbolOop sig, NameSigHash** table) { |
duke@435 | 672 | assert(name != NULL, "name in constant pool is NULL"); |
duke@435 | 673 | |
duke@435 | 674 | // First lookup for duplicates |
duke@435 | 675 | int index = hash(name, sig); |
duke@435 | 676 | NameSigHash* entry = table[index]; |
duke@435 | 677 | while (entry != NULL) { |
duke@435 | 678 | if (entry->_name == name && entry->_sig == sig) { |
duke@435 | 679 | return false; |
duke@435 | 680 | } |
duke@435 | 681 | entry = entry->_next; |
duke@435 | 682 | } |
duke@435 | 683 | |
duke@435 | 684 | // No duplicate is found, allocate a new entry and fill it. |
duke@435 | 685 | entry = new NameSigHash(); |
duke@435 | 686 | entry->_name = name; |
duke@435 | 687 | entry->_sig = sig; |
duke@435 | 688 | |
duke@435 | 689 | // Insert into hash table |
duke@435 | 690 | entry->_next = table[index]; |
duke@435 | 691 | table[index] = entry; |
duke@435 | 692 | |
duke@435 | 693 | return true; |
duke@435 | 694 | } |
duke@435 | 695 | |
duke@435 | 696 | |
duke@435 | 697 | objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp, |
duke@435 | 698 | int length, |
duke@435 | 699 | Handle class_loader, |
duke@435 | 700 | Handle protection_domain, |
duke@435 | 701 | symbolHandle class_name, |
duke@435 | 702 | TRAPS) { |
duke@435 | 703 | ClassFileStream* cfs = stream(); |
duke@435 | 704 | assert(length > 0, "only called for length>0"); |
duke@435 | 705 | objArrayHandle nullHandle; |
duke@435 | 706 | objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); |
duke@435 | 707 | objArrayHandle interfaces (THREAD, interface_oop); |
duke@435 | 708 | |
duke@435 | 709 | int index; |
duke@435 | 710 | for (index = 0; index < length; index++) { |
duke@435 | 711 | u2 interface_index = cfs->get_u2(CHECK_(nullHandle)); |
jrose@866 | 712 | KlassHandle interf; |
duke@435 | 713 | check_property( |
duke@435 | 714 | valid_cp_range(interface_index, cp->length()) && |
jrose@866 | 715 | is_klass_reference(cp, interface_index), |
duke@435 | 716 | "Interface name has bad constant pool index %u in class file %s", |
duke@435 | 717 | interface_index, CHECK_(nullHandle)); |
jrose@866 | 718 | if (cp->tag_at(interface_index).is_klass()) { |
jrose@866 | 719 | interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
jrose@866 | 720 | } else { |
jrose@866 | 721 | symbolHandle unresolved_klass (THREAD, cp->klass_name_at(interface_index)); |
jrose@866 | 722 | |
jrose@866 | 723 | // Don't need to check legal name because it's checked when parsing constant pool. |
jrose@866 | 724 | // But need to make sure it's not an array type. |
jrose@866 | 725 | guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
jrose@866 | 726 | "Bad interface name in class file %s", CHECK_(nullHandle)); |
jrose@866 | 727 | |
jrose@866 | 728 | // Call resolve_super so classcircularity is checked |
jrose@866 | 729 | klassOop k = SystemDictionary::resolve_super_or_fail(class_name, |
jrose@866 | 730 | unresolved_klass, class_loader, protection_domain, |
jrose@866 | 731 | false, CHECK_(nullHandle)); |
jrose@866 | 732 | interf = KlassHandle(THREAD, k); |
jrose@866 | 733 | |
jrose@909 | 734 | if (LinkWellKnownClasses) // my super type is well known to me |
jrose@909 | 735 | cp->klass_at_put(interface_index, interf()); // eagerly resolve |
jrose@866 | 736 | } |
duke@435 | 737 | |
duke@435 | 738 | if (!Klass::cast(interf())->is_interface()) { |
duke@435 | 739 | THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle); |
duke@435 | 740 | } |
duke@435 | 741 | interfaces->obj_at_put(index, interf()); |
duke@435 | 742 | } |
duke@435 | 743 | |
duke@435 | 744 | if (!_need_verify || length <= 1) { |
duke@435 | 745 | return interfaces; |
duke@435 | 746 | } |
duke@435 | 747 | |
duke@435 | 748 | // Check if there's any duplicates in interfaces |
duke@435 | 749 | ResourceMark rm(THREAD); |
duke@435 | 750 | NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 751 | THREAD, NameSigHash*, HASH_ROW_SIZE); |
duke@435 | 752 | initialize_hashtable(interface_names); |
duke@435 | 753 | bool dup = false; |
duke@435 | 754 | { |
duke@435 | 755 | debug_only(No_Safepoint_Verifier nsv;) |
duke@435 | 756 | for (index = 0; index < length; index++) { |
duke@435 | 757 | klassOop k = (klassOop)interfaces->obj_at(index); |
duke@435 | 758 | symbolOop name = instanceKlass::cast(k)->name(); |
duke@435 | 759 | // If no duplicates, add (name, NULL) in hashtable interface_names. |
duke@435 | 760 | if (!put_after_lookup(name, NULL, interface_names)) { |
duke@435 | 761 | dup = true; |
duke@435 | 762 | break; |
duke@435 | 763 | } |
duke@435 | 764 | } |
duke@435 | 765 | } |
duke@435 | 766 | if (dup) { |
duke@435 | 767 | classfile_parse_error("Duplicate interface name in class file %s", |
duke@435 | 768 | CHECK_(nullHandle)); |
duke@435 | 769 | } |
duke@435 | 770 | |
duke@435 | 771 | return interfaces; |
duke@435 | 772 | } |
duke@435 | 773 | |
duke@435 | 774 | |
duke@435 | 775 | void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { |
duke@435 | 776 | // Make sure the constant pool entry is of a type appropriate to this field |
duke@435 | 777 | guarantee_property( |
duke@435 | 778 | (constantvalue_index > 0 && |
duke@435 | 779 | constantvalue_index < cp->length()), |
duke@435 | 780 | "Bad initial value index %u in ConstantValue attribute in class file %s", |
duke@435 | 781 | constantvalue_index, CHECK); |
duke@435 | 782 | constantTag value_type = cp->tag_at(constantvalue_index); |
duke@435 | 783 | switch ( cp->basic_type_for_signature_at(signature_index) ) { |
duke@435 | 784 | case T_LONG: |
duke@435 | 785 | guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); |
duke@435 | 786 | break; |
duke@435 | 787 | case T_FLOAT: |
duke@435 | 788 | guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); |
duke@435 | 789 | break; |
duke@435 | 790 | case T_DOUBLE: |
duke@435 | 791 | guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); |
duke@435 | 792 | break; |
duke@435 | 793 | case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: |
duke@435 | 794 | guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); |
duke@435 | 795 | break; |
duke@435 | 796 | case T_OBJECT: |
twisti@1573 | 797 | guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
duke@435 | 798 | && (value_type.is_string() || value_type.is_unresolved_string())), |
duke@435 | 799 | "Bad string initial value in class file %s", CHECK); |
duke@435 | 800 | break; |
duke@435 | 801 | default: |
duke@435 | 802 | classfile_parse_error( |
duke@435 | 803 | "Unable to set initial value %u in class file %s", |
duke@435 | 804 | constantvalue_index, CHECK); |
duke@435 | 805 | } |
duke@435 | 806 | } |
duke@435 | 807 | |
duke@435 | 808 | |
duke@435 | 809 | // Parse attributes for a field. |
duke@435 | 810 | void ClassFileParser::parse_field_attributes(constantPoolHandle cp, |
duke@435 | 811 | u2 attributes_count, |
duke@435 | 812 | bool is_static, u2 signature_index, |
duke@435 | 813 | u2* constantvalue_index_addr, |
duke@435 | 814 | bool* is_synthetic_addr, |
duke@435 | 815 | u2* generic_signature_index_addr, |
duke@435 | 816 | typeArrayHandle* field_annotations, |
duke@435 | 817 | TRAPS) { |
duke@435 | 818 | ClassFileStream* cfs = stream(); |
duke@435 | 819 | assert(attributes_count > 0, "length should be greater than 0"); |
duke@435 | 820 | u2 constantvalue_index = 0; |
duke@435 | 821 | u2 generic_signature_index = 0; |
duke@435 | 822 | bool is_synthetic = false; |
duke@435 | 823 | u1* runtime_visible_annotations = NULL; |
duke@435 | 824 | int runtime_visible_annotations_length = 0; |
duke@435 | 825 | u1* runtime_invisible_annotations = NULL; |
duke@435 | 826 | int runtime_invisible_annotations_length = 0; |
duke@435 | 827 | while (attributes_count--) { |
duke@435 | 828 | cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length |
duke@435 | 829 | u2 attribute_name_index = cfs->get_u2_fast(); |
duke@435 | 830 | u4 attribute_length = cfs->get_u4_fast(); |
duke@435 | 831 | check_property(valid_cp_range(attribute_name_index, cp->length()) && |
duke@435 | 832 | cp->tag_at(attribute_name_index).is_utf8(), |
duke@435 | 833 | "Invalid field attribute index %u in class file %s", |
duke@435 | 834 | attribute_name_index, |
duke@435 | 835 | CHECK); |
duke@435 | 836 | symbolOop attribute_name = cp->symbol_at(attribute_name_index); |
duke@435 | 837 | if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
duke@435 | 838 | // ignore if non-static |
duke@435 | 839 | if (constantvalue_index != 0) { |
duke@435 | 840 | classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); |
duke@435 | 841 | } |
duke@435 | 842 | check_property( |
duke@435 | 843 | attribute_length == 2, |
duke@435 | 844 | "Invalid ConstantValue field attribute length %u in class file %s", |
duke@435 | 845 | attribute_length, CHECK); |
duke@435 | 846 | constantvalue_index = cfs->get_u2(CHECK); |
duke@435 | 847 | if (_need_verify) { |
duke@435 | 848 | verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); |
duke@435 | 849 | } |
duke@435 | 850 | } else if (attribute_name == vmSymbols::tag_synthetic()) { |
duke@435 | 851 | if (attribute_length != 0) { |
duke@435 | 852 | classfile_parse_error( |
duke@435 | 853 | "Invalid Synthetic field attribute length %u in class file %s", |
duke@435 | 854 | attribute_length, CHECK); |
duke@435 | 855 | } |
duke@435 | 856 | is_synthetic = true; |
duke@435 | 857 | } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 |
duke@435 | 858 | if (attribute_length != 0) { |
duke@435 | 859 | classfile_parse_error( |
duke@435 | 860 | "Invalid Deprecated field attribute length %u in class file %s", |
duke@435 | 861 | attribute_length, CHECK); |
duke@435 | 862 | } |
duke@435 | 863 | } else if (_major_version >= JAVA_1_5_VERSION) { |
duke@435 | 864 | if (attribute_name == vmSymbols::tag_signature()) { |
duke@435 | 865 | if (attribute_length != 2) { |
duke@435 | 866 | classfile_parse_error( |
duke@435 | 867 | "Wrong size %u for field's Signature attribute in class file %s", |
duke@435 | 868 | attribute_length, CHECK); |
duke@435 | 869 | } |
duke@435 | 870 | generic_signature_index = cfs->get_u2(CHECK); |
duke@435 | 871 | } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { |
duke@435 | 872 | runtime_visible_annotations_length = attribute_length; |
duke@435 | 873 | runtime_visible_annotations = cfs->get_u1_buffer(); |
duke@435 | 874 | assert(runtime_visible_annotations != NULL, "null visible annotations"); |
duke@435 | 875 | cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
duke@435 | 876 | } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { |
duke@435 | 877 | runtime_invisible_annotations_length = attribute_length; |
duke@435 | 878 | runtime_invisible_annotations = cfs->get_u1_buffer(); |
duke@435 | 879 | assert(runtime_invisible_annotations != NULL, "null invisible annotations"); |
duke@435 | 880 | cfs->skip_u1(runtime_invisible_annotations_length, CHECK); |
duke@435 | 881 | } else { |
duke@435 | 882 | cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes |
duke@435 | 883 | } |
duke@435 | 884 | } else { |
duke@435 | 885 | cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes |
duke@435 | 886 | } |
duke@435 | 887 | } |
duke@435 | 888 | |
duke@435 | 889 | *constantvalue_index_addr = constantvalue_index; |
duke@435 | 890 | *is_synthetic_addr = is_synthetic; |
duke@435 | 891 | *generic_signature_index_addr = generic_signature_index; |
duke@435 | 892 | *field_annotations = assemble_annotations(runtime_visible_annotations, |
duke@435 | 893 | runtime_visible_annotations_length, |
duke@435 | 894 | runtime_invisible_annotations, |
duke@435 | 895 | runtime_invisible_annotations_length, |
duke@435 | 896 | CHECK); |
duke@435 | 897 | return; |
duke@435 | 898 | } |
duke@435 | 899 | |
duke@435 | 900 | |
duke@435 | 901 | // Field allocation types. Used for computing field offsets. |
duke@435 | 902 | |
duke@435 | 903 | enum FieldAllocationType { |
duke@435 | 904 | STATIC_OOP, // Oops |
duke@435 | 905 | STATIC_BYTE, // Boolean, Byte, char |
duke@435 | 906 | STATIC_SHORT, // shorts |
duke@435 | 907 | STATIC_WORD, // ints |
duke@435 | 908 | STATIC_DOUBLE, // long or double |
duke@435 | 909 | STATIC_ALIGNED_DOUBLE,// aligned long or double |
duke@435 | 910 | NONSTATIC_OOP, |
duke@435 | 911 | NONSTATIC_BYTE, |
duke@435 | 912 | NONSTATIC_SHORT, |
duke@435 | 913 | NONSTATIC_WORD, |
duke@435 | 914 | NONSTATIC_DOUBLE, |
duke@435 | 915 | NONSTATIC_ALIGNED_DOUBLE |
duke@435 | 916 | }; |
duke@435 | 917 | |
duke@435 | 918 | |
duke@435 | 919 | struct FieldAllocationCount { |
jcoomes@1374 | 920 | unsigned int static_oop_count; |
jcoomes@1374 | 921 | unsigned int static_byte_count; |
jcoomes@1374 | 922 | unsigned int static_short_count; |
jcoomes@1374 | 923 | unsigned int static_word_count; |
jcoomes@1374 | 924 | unsigned int static_double_count; |
jcoomes@1374 | 925 | unsigned int nonstatic_oop_count; |
jcoomes@1374 | 926 | unsigned int nonstatic_byte_count; |
jcoomes@1374 | 927 | unsigned int nonstatic_short_count; |
jcoomes@1374 | 928 | unsigned int nonstatic_word_count; |
jcoomes@1374 | 929 | unsigned int nonstatic_double_count; |
duke@435 | 930 | }; |
duke@435 | 931 | |
duke@435 | 932 | typeArrayHandle ClassFileParser::parse_fields(constantPoolHandle cp, bool is_interface, |
duke@435 | 933 | struct FieldAllocationCount *fac, |
duke@435 | 934 | objArrayHandle* fields_annotations, TRAPS) { |
duke@435 | 935 | ClassFileStream* cfs = stream(); |
duke@435 | 936 | typeArrayHandle nullHandle; |
duke@435 | 937 | cfs->guarantee_more(2, CHECK_(nullHandle)); // length |
duke@435 | 938 | u2 length = cfs->get_u2_fast(); |
duke@435 | 939 | // Tuples of shorts [access, name index, sig index, initial value index, byte offset, generic signature index] |
duke@435 | 940 | typeArrayOop new_fields = oopFactory::new_permanent_shortArray(length*instanceKlass::next_offset, CHECK_(nullHandle)); |
duke@435 | 941 | typeArrayHandle fields(THREAD, new_fields); |
duke@435 | 942 | |
duke@435 | 943 | int index = 0; |
duke@435 | 944 | typeArrayHandle field_annotations; |
duke@435 | 945 | for (int n = 0; n < length; n++) { |
duke@435 | 946 | cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count |
duke@435 | 947 | |
duke@435 | 948 | AccessFlags access_flags; |
duke@435 | 949 | jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; |
duke@435 | 950 | verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle)); |
duke@435 | 951 | access_flags.set_flags(flags); |
duke@435 | 952 | |
duke@435 | 953 | u2 name_index = cfs->get_u2_fast(); |
duke@435 | 954 | int cp_size = cp->length(); |
duke@435 | 955 | check_property( |
duke@435 | 956 | valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), |
duke@435 | 957 | "Invalid constant pool index %u for field name in class file %s", |
duke@435 | 958 | name_index, CHECK_(nullHandle)); |
duke@435 | 959 | symbolHandle name(THREAD, cp->symbol_at(name_index)); |
duke@435 | 960 | verify_legal_field_name(name, CHECK_(nullHandle)); |
duke@435 | 961 | |
duke@435 | 962 | u2 signature_index = cfs->get_u2_fast(); |
duke@435 | 963 | check_property( |
duke@435 | 964 | valid_cp_range(signature_index, cp_size) && |
duke@435 | 965 | cp->tag_at(signature_index).is_utf8(), |
duke@435 | 966 | "Invalid constant pool index %u for field signature in class file %s", |
duke@435 | 967 | signature_index, CHECK_(nullHandle)); |
duke@435 | 968 | symbolHandle sig(THREAD, cp->symbol_at(signature_index)); |
duke@435 | 969 | verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
duke@435 | 970 | |
duke@435 | 971 | u2 constantvalue_index = 0; |
duke@435 | 972 | bool is_synthetic = false; |
duke@435 | 973 | u2 generic_signature_index = 0; |
duke@435 | 974 | bool is_static = access_flags.is_static(); |
duke@435 | 975 | |
duke@435 | 976 | u2 attributes_count = cfs->get_u2_fast(); |
duke@435 | 977 | if (attributes_count > 0) { |
duke@435 | 978 | parse_field_attributes(cp, attributes_count, is_static, signature_index, |
duke@435 | 979 | &constantvalue_index, &is_synthetic, |
duke@435 | 980 | &generic_signature_index, &field_annotations, |
duke@435 | 981 | CHECK_(nullHandle)); |
duke@435 | 982 | if (field_annotations.not_null()) { |
duke@435 | 983 | if (fields_annotations->is_null()) { |
duke@435 | 984 | objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); |
duke@435 | 985 | *fields_annotations = objArrayHandle(THREAD, md); |
duke@435 | 986 | } |
duke@435 | 987 | (*fields_annotations)->obj_at_put(n, field_annotations()); |
duke@435 | 988 | } |
duke@435 | 989 | if (is_synthetic) { |
duke@435 | 990 | access_flags.set_is_synthetic(); |
duke@435 | 991 | } |
duke@435 | 992 | } |
duke@435 | 993 | |
duke@435 | 994 | fields->short_at_put(index++, access_flags.as_short()); |
duke@435 | 995 | fields->short_at_put(index++, name_index); |
duke@435 | 996 | fields->short_at_put(index++, signature_index); |
duke@435 | 997 | fields->short_at_put(index++, constantvalue_index); |
duke@435 | 998 | |
duke@435 | 999 | // Remember how many oops we encountered and compute allocation type |
duke@435 | 1000 | BasicType type = cp->basic_type_for_signature_at(signature_index); |
duke@435 | 1001 | FieldAllocationType atype; |
duke@435 | 1002 | if ( is_static ) { |
duke@435 | 1003 | switch ( type ) { |
duke@435 | 1004 | case T_BOOLEAN: |
duke@435 | 1005 | case T_BYTE: |
duke@435 | 1006 | fac->static_byte_count++; |
duke@435 | 1007 | atype = STATIC_BYTE; |
duke@435 | 1008 | break; |
duke@435 | 1009 | case T_LONG: |
duke@435 | 1010 | case T_DOUBLE: |
duke@435 | 1011 | if (Universe::field_type_should_be_aligned(type)) { |
duke@435 | 1012 | atype = STATIC_ALIGNED_DOUBLE; |
duke@435 | 1013 | } else { |
duke@435 | 1014 | atype = STATIC_DOUBLE; |
duke@435 | 1015 | } |
duke@435 | 1016 | fac->static_double_count++; |
duke@435 | 1017 | break; |
duke@435 | 1018 | case T_CHAR: |
duke@435 | 1019 | case T_SHORT: |
duke@435 | 1020 | fac->static_short_count++; |
duke@435 | 1021 | atype = STATIC_SHORT; |
duke@435 | 1022 | break; |
duke@435 | 1023 | case T_FLOAT: |
duke@435 | 1024 | case T_INT: |
duke@435 | 1025 | fac->static_word_count++; |
duke@435 | 1026 | atype = STATIC_WORD; |
duke@435 | 1027 | break; |
duke@435 | 1028 | case T_ARRAY: |
duke@435 | 1029 | case T_OBJECT: |
duke@435 | 1030 | fac->static_oop_count++; |
duke@435 | 1031 | atype = STATIC_OOP; |
duke@435 | 1032 | break; |
duke@435 | 1033 | case T_ADDRESS: |
duke@435 | 1034 | case T_VOID: |
duke@435 | 1035 | default: |
duke@435 | 1036 | assert(0, "bad field type"); |
duke@435 | 1037 | } |
duke@435 | 1038 | } else { |
duke@435 | 1039 | switch ( type ) { |
duke@435 | 1040 | case T_BOOLEAN: |
duke@435 | 1041 | case T_BYTE: |
duke@435 | 1042 | fac->nonstatic_byte_count++; |
duke@435 | 1043 | atype = NONSTATIC_BYTE; |
duke@435 | 1044 | break; |
duke@435 | 1045 | case T_LONG: |
duke@435 | 1046 | case T_DOUBLE: |
duke@435 | 1047 | if (Universe::field_type_should_be_aligned(type)) { |
duke@435 | 1048 | atype = NONSTATIC_ALIGNED_DOUBLE; |
duke@435 | 1049 | } else { |
duke@435 | 1050 | atype = NONSTATIC_DOUBLE; |
duke@435 | 1051 | } |
duke@435 | 1052 | fac->nonstatic_double_count++; |
duke@435 | 1053 | break; |
duke@435 | 1054 | case T_CHAR: |
duke@435 | 1055 | case T_SHORT: |
duke@435 | 1056 | fac->nonstatic_short_count++; |
duke@435 | 1057 | atype = NONSTATIC_SHORT; |
duke@435 | 1058 | break; |
duke@435 | 1059 | case T_FLOAT: |
duke@435 | 1060 | case T_INT: |
duke@435 | 1061 | fac->nonstatic_word_count++; |
duke@435 | 1062 | atype = NONSTATIC_WORD; |
duke@435 | 1063 | break; |
duke@435 | 1064 | case T_ARRAY: |
duke@435 | 1065 | case T_OBJECT: |
duke@435 | 1066 | fac->nonstatic_oop_count++; |
duke@435 | 1067 | atype = NONSTATIC_OOP; |
duke@435 | 1068 | break; |
duke@435 | 1069 | case T_ADDRESS: |
duke@435 | 1070 | case T_VOID: |
duke@435 | 1071 | default: |
duke@435 | 1072 | assert(0, "bad field type"); |
duke@435 | 1073 | } |
duke@435 | 1074 | } |
duke@435 | 1075 | |
duke@435 | 1076 | // The correct offset is computed later (all oop fields will be located together) |
duke@435 | 1077 | // We temporarily store the allocation type in the offset field |
duke@435 | 1078 | fields->short_at_put(index++, atype); |
duke@435 | 1079 | fields->short_at_put(index++, 0); // Clear out high word of byte offset |
duke@435 | 1080 | fields->short_at_put(index++, generic_signature_index); |
duke@435 | 1081 | } |
duke@435 | 1082 | |
duke@435 | 1083 | if (_need_verify && length > 1) { |
duke@435 | 1084 | // Check duplicated fields |
duke@435 | 1085 | ResourceMark rm(THREAD); |
duke@435 | 1086 | NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1087 | THREAD, NameSigHash*, HASH_ROW_SIZE); |
duke@435 | 1088 | initialize_hashtable(names_and_sigs); |
duke@435 | 1089 | bool dup = false; |
duke@435 | 1090 | { |
duke@435 | 1091 | debug_only(No_Safepoint_Verifier nsv;) |
duke@435 | 1092 | for (int i = 0; i < length*instanceKlass::next_offset; i += instanceKlass::next_offset) { |
duke@435 | 1093 | int name_index = fields->ushort_at(i + instanceKlass::name_index_offset); |
duke@435 | 1094 | symbolOop name = cp->symbol_at(name_index); |
duke@435 | 1095 | int sig_index = fields->ushort_at(i + instanceKlass::signature_index_offset); |
duke@435 | 1096 | symbolOop sig = cp->symbol_at(sig_index); |
duke@435 | 1097 | // If no duplicates, add name/signature in hashtable names_and_sigs. |
duke@435 | 1098 | if (!put_after_lookup(name, sig, names_and_sigs)) { |
duke@435 | 1099 | dup = true; |
duke@435 | 1100 | break; |
duke@435 | 1101 | } |
duke@435 | 1102 | } |
duke@435 | 1103 | } |
duke@435 | 1104 | if (dup) { |
duke@435 | 1105 | classfile_parse_error("Duplicate field name&signature in class file %s", |
duke@435 | 1106 | CHECK_(nullHandle)); |
duke@435 | 1107 | } |
duke@435 | 1108 | } |
duke@435 | 1109 | |
duke@435 | 1110 | return fields; |
duke@435 | 1111 | } |
duke@435 | 1112 | |
duke@435 | 1113 | |
duke@435 | 1114 | static void copy_u2_with_conversion(u2* dest, u2* src, int length) { |
duke@435 | 1115 | while (length-- > 0) { |
duke@435 | 1116 | *dest++ = Bytes::get_Java_u2((u1*) (src++)); |
duke@435 | 1117 | } |
duke@435 | 1118 | } |
duke@435 | 1119 | |
duke@435 | 1120 | |
duke@435 | 1121 | typeArrayHandle ClassFileParser::parse_exception_table(u4 code_length, |
duke@435 | 1122 | u4 exception_table_length, |
duke@435 | 1123 | constantPoolHandle cp, |
duke@435 | 1124 | TRAPS) { |
duke@435 | 1125 | ClassFileStream* cfs = stream(); |
duke@435 | 1126 | typeArrayHandle nullHandle; |
duke@435 | 1127 | |
duke@435 | 1128 | // 4-tuples of ints [start_pc, end_pc, handler_pc, catch_type index] |
duke@435 | 1129 | typeArrayOop eh = oopFactory::new_permanent_intArray(exception_table_length*4, CHECK_(nullHandle)); |
duke@435 | 1130 | typeArrayHandle exception_handlers = typeArrayHandle(THREAD, eh); |
duke@435 | 1131 | |
duke@435 | 1132 | int index = 0; |
duke@435 | 1133 | cfs->guarantee_more(8 * exception_table_length, CHECK_(nullHandle)); // start_pc, end_pc, handler_pc, catch_type_index |
duke@435 | 1134 | for (unsigned int i = 0; i < exception_table_length; i++) { |
duke@435 | 1135 | u2 start_pc = cfs->get_u2_fast(); |
duke@435 | 1136 | u2 end_pc = cfs->get_u2_fast(); |
duke@435 | 1137 | u2 handler_pc = cfs->get_u2_fast(); |
duke@435 | 1138 | u2 catch_type_index = cfs->get_u2_fast(); |
duke@435 | 1139 | // Will check legal target after parsing code array in verifier. |
duke@435 | 1140 | if (_need_verify) { |
duke@435 | 1141 | guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
duke@435 | 1142 | "Illegal exception table range in class file %s", CHECK_(nullHandle)); |
duke@435 | 1143 | guarantee_property(handler_pc < code_length, |
duke@435 | 1144 | "Illegal exception table handler in class file %s", CHECK_(nullHandle)); |
duke@435 | 1145 | if (catch_type_index != 0) { |
duke@435 | 1146 | guarantee_property(valid_cp_range(catch_type_index, cp->length()) && |
jrose@866 | 1147 | is_klass_reference(cp, catch_type_index), |
duke@435 | 1148 | "Catch type in exception table has bad constant type in class file %s", CHECK_(nullHandle)); |
duke@435 | 1149 | } |
duke@435 | 1150 | } |
duke@435 | 1151 | exception_handlers->int_at_put(index++, start_pc); |
duke@435 | 1152 | exception_handlers->int_at_put(index++, end_pc); |
duke@435 | 1153 | exception_handlers->int_at_put(index++, handler_pc); |
duke@435 | 1154 | exception_handlers->int_at_put(index++, catch_type_index); |
duke@435 | 1155 | } |
duke@435 | 1156 | return exception_handlers; |
duke@435 | 1157 | } |
duke@435 | 1158 | |
duke@435 | 1159 | void ClassFileParser::parse_linenumber_table( |
duke@435 | 1160 | u4 code_attribute_length, u4 code_length, |
duke@435 | 1161 | CompressedLineNumberWriteStream** write_stream, TRAPS) { |
duke@435 | 1162 | ClassFileStream* cfs = stream(); |
duke@435 | 1163 | unsigned int num_entries = cfs->get_u2(CHECK); |
duke@435 | 1164 | |
duke@435 | 1165 | // Each entry is a u2 start_pc, and a u2 line_number |
duke@435 | 1166 | unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); |
duke@435 | 1167 | |
duke@435 | 1168 | // Verify line number attribute and table length |
duke@435 | 1169 | check_property( |
duke@435 | 1170 | code_attribute_length == sizeof(u2) + length_in_bytes, |
duke@435 | 1171 | "LineNumberTable attribute has wrong length in class file %s", CHECK); |
duke@435 | 1172 | |
duke@435 | 1173 | cfs->guarantee_more(length_in_bytes, CHECK); |
duke@435 | 1174 | |
duke@435 | 1175 | if ((*write_stream) == NULL) { |
duke@435 | 1176 | if (length_in_bytes > fixed_buffer_size) { |
duke@435 | 1177 | (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); |
duke@435 | 1178 | } else { |
duke@435 | 1179 | (*write_stream) = new CompressedLineNumberWriteStream( |
duke@435 | 1180 | linenumbertable_buffer, fixed_buffer_size); |
duke@435 | 1181 | } |
duke@435 | 1182 | } |
duke@435 | 1183 | |
duke@435 | 1184 | while (num_entries-- > 0) { |
duke@435 | 1185 | u2 bci = cfs->get_u2_fast(); // start_pc |
duke@435 | 1186 | u2 line = cfs->get_u2_fast(); // line_number |
duke@435 | 1187 | guarantee_property(bci < code_length, |
duke@435 | 1188 | "Invalid pc in LineNumberTable in class file %s", CHECK); |
duke@435 | 1189 | (*write_stream)->write_pair(bci, line); |
duke@435 | 1190 | } |
duke@435 | 1191 | } |
duke@435 | 1192 | |
duke@435 | 1193 | |
duke@435 | 1194 | // Class file LocalVariableTable elements. |
duke@435 | 1195 | class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { |
duke@435 | 1196 | public: |
duke@435 | 1197 | u2 start_bci; |
duke@435 | 1198 | u2 length; |
duke@435 | 1199 | u2 name_cp_index; |
duke@435 | 1200 | u2 descriptor_cp_index; |
duke@435 | 1201 | u2 slot; |
duke@435 | 1202 | }; |
duke@435 | 1203 | |
duke@435 | 1204 | |
duke@435 | 1205 | class LVT_Hash: public CHeapObj { |
duke@435 | 1206 | public: |
duke@435 | 1207 | LocalVariableTableElement *_elem; // element |
duke@435 | 1208 | LVT_Hash* _next; // Next entry in hash table |
duke@435 | 1209 | }; |
duke@435 | 1210 | |
duke@435 | 1211 | unsigned int hash(LocalVariableTableElement *elem) { |
duke@435 | 1212 | unsigned int raw_hash = elem->start_bci; |
duke@435 | 1213 | |
duke@435 | 1214 | raw_hash = elem->length + raw_hash * 37; |
duke@435 | 1215 | raw_hash = elem->name_cp_index + raw_hash * 37; |
duke@435 | 1216 | raw_hash = elem->slot + raw_hash * 37; |
duke@435 | 1217 | |
duke@435 | 1218 | return raw_hash % HASH_ROW_SIZE; |
duke@435 | 1219 | } |
duke@435 | 1220 | |
duke@435 | 1221 | void initialize_hashtable(LVT_Hash** table) { |
duke@435 | 1222 | for (int i = 0; i < HASH_ROW_SIZE; i++) { |
duke@435 | 1223 | table[i] = NULL; |
duke@435 | 1224 | } |
duke@435 | 1225 | } |
duke@435 | 1226 | |
duke@435 | 1227 | void clear_hashtable(LVT_Hash** table) { |
duke@435 | 1228 | for (int i = 0; i < HASH_ROW_SIZE; i++) { |
duke@435 | 1229 | LVT_Hash* current = table[i]; |
duke@435 | 1230 | LVT_Hash* next; |
duke@435 | 1231 | while (current != NULL) { |
duke@435 | 1232 | next = current->_next; |
duke@435 | 1233 | current->_next = NULL; |
duke@435 | 1234 | delete(current); |
duke@435 | 1235 | current = next; |
duke@435 | 1236 | } |
duke@435 | 1237 | table[i] = NULL; |
duke@435 | 1238 | } |
duke@435 | 1239 | } |
duke@435 | 1240 | |
duke@435 | 1241 | LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { |
duke@435 | 1242 | LVT_Hash* entry = table[index]; |
duke@435 | 1243 | |
duke@435 | 1244 | /* |
duke@435 | 1245 | * 3-tuple start_bci/length/slot has to be unique key, |
duke@435 | 1246 | * so the following comparison seems to be redundant: |
duke@435 | 1247 | * && elem->name_cp_index == entry->_elem->name_cp_index |
duke@435 | 1248 | */ |
duke@435 | 1249 | while (entry != NULL) { |
duke@435 | 1250 | if (elem->start_bci == entry->_elem->start_bci |
duke@435 | 1251 | && elem->length == entry->_elem->length |
duke@435 | 1252 | && elem->name_cp_index == entry->_elem->name_cp_index |
duke@435 | 1253 | && elem->slot == entry->_elem->slot |
duke@435 | 1254 | ) { |
duke@435 | 1255 | return entry; |
duke@435 | 1256 | } |
duke@435 | 1257 | entry = entry->_next; |
duke@435 | 1258 | } |
duke@435 | 1259 | return NULL; |
duke@435 | 1260 | } |
duke@435 | 1261 | |
duke@435 | 1262 | // Return false if the local variable is found in table. |
duke@435 | 1263 | // Return true if no duplicate is found. |
duke@435 | 1264 | // And local variable is added as a new entry in table. |
duke@435 | 1265 | bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { |
duke@435 | 1266 | // First lookup for duplicates |
duke@435 | 1267 | int index = hash(elem); |
duke@435 | 1268 | LVT_Hash* entry = LVT_lookup(elem, index, table); |
duke@435 | 1269 | |
duke@435 | 1270 | if (entry != NULL) { |
duke@435 | 1271 | return false; |
duke@435 | 1272 | } |
duke@435 | 1273 | // No duplicate is found, allocate a new entry and fill it. |
duke@435 | 1274 | if ((entry = new LVT_Hash()) == NULL) { |
duke@435 | 1275 | return false; |
duke@435 | 1276 | } |
duke@435 | 1277 | entry->_elem = elem; |
duke@435 | 1278 | |
duke@435 | 1279 | // Insert into hash table |
duke@435 | 1280 | entry->_next = table[index]; |
duke@435 | 1281 | table[index] = entry; |
duke@435 | 1282 | |
duke@435 | 1283 | return true; |
duke@435 | 1284 | } |
duke@435 | 1285 | |
duke@435 | 1286 | void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { |
duke@435 | 1287 | lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); |
duke@435 | 1288 | lvt->length = Bytes::get_Java_u2((u1*) &src->length); |
duke@435 | 1289 | lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); |
duke@435 | 1290 | lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); |
duke@435 | 1291 | lvt->signature_cp_index = 0; |
duke@435 | 1292 | lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); |
duke@435 | 1293 | } |
duke@435 | 1294 | |
duke@435 | 1295 | // Function is used to parse both attributes: |
duke@435 | 1296 | // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) |
duke@435 | 1297 | u2* ClassFileParser::parse_localvariable_table(u4 code_length, |
duke@435 | 1298 | u2 max_locals, |
duke@435 | 1299 | u4 code_attribute_length, |
duke@435 | 1300 | constantPoolHandle cp, |
duke@435 | 1301 | u2* localvariable_table_length, |
duke@435 | 1302 | bool isLVTT, |
duke@435 | 1303 | TRAPS) { |
duke@435 | 1304 | ClassFileStream* cfs = stream(); |
duke@435 | 1305 | const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; |
duke@435 | 1306 | *localvariable_table_length = cfs->get_u2(CHECK_NULL); |
duke@435 | 1307 | unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); |
duke@435 | 1308 | // Verify local variable table attribute has right length |
duke@435 | 1309 | if (_need_verify) { |
duke@435 | 1310 | guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), |
duke@435 | 1311 | "%s has wrong length in class file %s", tbl_name, CHECK_NULL); |
duke@435 | 1312 | } |
duke@435 | 1313 | u2* localvariable_table_start = cfs->get_u2_buffer(); |
duke@435 | 1314 | assert(localvariable_table_start != NULL, "null local variable table"); |
duke@435 | 1315 | if (!_need_verify) { |
duke@435 | 1316 | cfs->skip_u2_fast(size); |
duke@435 | 1317 | } else { |
duke@435 | 1318 | cfs->guarantee_more(size * 2, CHECK_NULL); |
duke@435 | 1319 | for(int i = 0; i < (*localvariable_table_length); i++) { |
duke@435 | 1320 | u2 start_pc = cfs->get_u2_fast(); |
duke@435 | 1321 | u2 length = cfs->get_u2_fast(); |
duke@435 | 1322 | u2 name_index = cfs->get_u2_fast(); |
duke@435 | 1323 | u2 descriptor_index = cfs->get_u2_fast(); |
duke@435 | 1324 | u2 index = cfs->get_u2_fast(); |
duke@435 | 1325 | // Assign to a u4 to avoid overflow |
duke@435 | 1326 | u4 end_pc = (u4)start_pc + (u4)length; |
duke@435 | 1327 | |
duke@435 | 1328 | if (start_pc >= code_length) { |
duke@435 | 1329 | classfile_parse_error( |
duke@435 | 1330 | "Invalid start_pc %u in %s in class file %s", |
duke@435 | 1331 | start_pc, tbl_name, CHECK_NULL); |
duke@435 | 1332 | } |
duke@435 | 1333 | if (end_pc > code_length) { |
duke@435 | 1334 | classfile_parse_error( |
duke@435 | 1335 | "Invalid length %u in %s in class file %s", |
duke@435 | 1336 | length, tbl_name, CHECK_NULL); |
duke@435 | 1337 | } |
duke@435 | 1338 | int cp_size = cp->length(); |
duke@435 | 1339 | guarantee_property( |
duke@435 | 1340 | valid_cp_range(name_index, cp_size) && |
duke@435 | 1341 | cp->tag_at(name_index).is_utf8(), |
duke@435 | 1342 | "Name index %u in %s has bad constant type in class file %s", |
duke@435 | 1343 | name_index, tbl_name, CHECK_NULL); |
duke@435 | 1344 | guarantee_property( |
duke@435 | 1345 | valid_cp_range(descriptor_index, cp_size) && |
duke@435 | 1346 | cp->tag_at(descriptor_index).is_utf8(), |
duke@435 | 1347 | "Signature index %u in %s has bad constant type in class file %s", |
duke@435 | 1348 | descriptor_index, tbl_name, CHECK_NULL); |
duke@435 | 1349 | |
duke@435 | 1350 | symbolHandle name(THREAD, cp->symbol_at(name_index)); |
duke@435 | 1351 | symbolHandle sig(THREAD, cp->symbol_at(descriptor_index)); |
duke@435 | 1352 | verify_legal_field_name(name, CHECK_NULL); |
duke@435 | 1353 | u2 extra_slot = 0; |
duke@435 | 1354 | if (!isLVTT) { |
duke@435 | 1355 | verify_legal_field_signature(name, sig, CHECK_NULL); |
duke@435 | 1356 | |
duke@435 | 1357 | // 4894874: check special cases for double and long local variables |
duke@435 | 1358 | if (sig() == vmSymbols::type_signature(T_DOUBLE) || |
duke@435 | 1359 | sig() == vmSymbols::type_signature(T_LONG)) { |
duke@435 | 1360 | extra_slot = 1; |
duke@435 | 1361 | } |
duke@435 | 1362 | } |
duke@435 | 1363 | guarantee_property((index + extra_slot) < max_locals, |
duke@435 | 1364 | "Invalid index %u in %s in class file %s", |
duke@435 | 1365 | index, tbl_name, CHECK_NULL); |
duke@435 | 1366 | } |
duke@435 | 1367 | } |
duke@435 | 1368 | return localvariable_table_start; |
duke@435 | 1369 | } |
duke@435 | 1370 | |
duke@435 | 1371 | |
duke@435 | 1372 | void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, |
duke@435 | 1373 | u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { |
duke@435 | 1374 | ClassFileStream* cfs = stream(); |
duke@435 | 1375 | u2 index = 0; // index in the array with long/double occupying two slots |
duke@435 | 1376 | u4 i1 = *u1_index; |
duke@435 | 1377 | u4 i2 = *u2_index + 1; |
duke@435 | 1378 | for(int i = 0; i < array_length; i++) { |
duke@435 | 1379 | u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); |
duke@435 | 1380 | index++; |
duke@435 | 1381 | if (tag == ITEM_Long || tag == ITEM_Double) { |
duke@435 | 1382 | index++; |
duke@435 | 1383 | } else if (tag == ITEM_Object) { |
duke@435 | 1384 | u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); |
duke@435 | 1385 | guarantee_property(valid_cp_range(class_index, cp->length()) && |
jrose@866 | 1386 | is_klass_reference(cp, class_index), |
duke@435 | 1387 | "Bad class index %u in StackMap in class file %s", |
duke@435 | 1388 | class_index, CHECK); |
duke@435 | 1389 | } else if (tag == ITEM_Uninitialized) { |
duke@435 | 1390 | u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); |
duke@435 | 1391 | guarantee_property( |
duke@435 | 1392 | offset < code_length, |
duke@435 | 1393 | "Bad uninitialized type offset %u in StackMap in class file %s", |
duke@435 | 1394 | offset, CHECK); |
duke@435 | 1395 | } else { |
duke@435 | 1396 | guarantee_property( |
duke@435 | 1397 | tag <= (u1)ITEM_Uninitialized, |
duke@435 | 1398 | "Unknown variable type %u in StackMap in class file %s", |
duke@435 | 1399 | tag, CHECK); |
duke@435 | 1400 | } |
duke@435 | 1401 | } |
duke@435 | 1402 | u2_array[*u2_index] = index; |
duke@435 | 1403 | *u1_index = i1; |
duke@435 | 1404 | *u2_index = i2; |
duke@435 | 1405 | } |
duke@435 | 1406 | |
duke@435 | 1407 | typeArrayOop ClassFileParser::parse_stackmap_table( |
duke@435 | 1408 | u4 code_attribute_length, TRAPS) { |
duke@435 | 1409 | if (code_attribute_length == 0) |
duke@435 | 1410 | return NULL; |
duke@435 | 1411 | |
duke@435 | 1412 | ClassFileStream* cfs = stream(); |
duke@435 | 1413 | u1* stackmap_table_start = cfs->get_u1_buffer(); |
duke@435 | 1414 | assert(stackmap_table_start != NULL, "null stackmap table"); |
duke@435 | 1415 | |
duke@435 | 1416 | // check code_attribute_length first |
duke@435 | 1417 | stream()->skip_u1(code_attribute_length, CHECK_NULL); |
duke@435 | 1418 | |
duke@435 | 1419 | if (!_need_verify && !DumpSharedSpaces) { |
duke@435 | 1420 | return NULL; |
duke@435 | 1421 | } |
duke@435 | 1422 | |
duke@435 | 1423 | typeArrayOop stackmap_data = |
duke@435 | 1424 | oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL); |
duke@435 | 1425 | |
duke@435 | 1426 | stackmap_data->set_length(code_attribute_length); |
duke@435 | 1427 | memcpy((void*)stackmap_data->byte_at_addr(0), |
duke@435 | 1428 | (void*)stackmap_table_start, code_attribute_length); |
duke@435 | 1429 | return stackmap_data; |
duke@435 | 1430 | } |
duke@435 | 1431 | |
duke@435 | 1432 | u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, |
duke@435 | 1433 | u4 method_attribute_length, |
duke@435 | 1434 | constantPoolHandle cp, TRAPS) { |
duke@435 | 1435 | ClassFileStream* cfs = stream(); |
duke@435 | 1436 | cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length |
duke@435 | 1437 | *checked_exceptions_length = cfs->get_u2_fast(); |
duke@435 | 1438 | unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); |
duke@435 | 1439 | u2* checked_exceptions_start = cfs->get_u2_buffer(); |
duke@435 | 1440 | assert(checked_exceptions_start != NULL, "null checked exceptions"); |
duke@435 | 1441 | if (!_need_verify) { |
duke@435 | 1442 | cfs->skip_u2_fast(size); |
duke@435 | 1443 | } else { |
duke@435 | 1444 | // Verify each value in the checked exception table |
duke@435 | 1445 | u2 checked_exception; |
duke@435 | 1446 | u2 len = *checked_exceptions_length; |
duke@435 | 1447 | cfs->guarantee_more(2 * len, CHECK_NULL); |
duke@435 | 1448 | for (int i = 0; i < len; i++) { |
duke@435 | 1449 | checked_exception = cfs->get_u2_fast(); |
duke@435 | 1450 | check_property( |
duke@435 | 1451 | valid_cp_range(checked_exception, cp->length()) && |
jrose@866 | 1452 | is_klass_reference(cp, checked_exception), |
duke@435 | 1453 | "Exception name has bad type at constant pool %u in class file %s", |
duke@435 | 1454 | checked_exception, CHECK_NULL); |
duke@435 | 1455 | } |
duke@435 | 1456 | } |
duke@435 | 1457 | // check exceptions attribute length |
duke@435 | 1458 | if (_need_verify) { |
duke@435 | 1459 | guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + |
duke@435 | 1460 | sizeof(u2) * size), |
duke@435 | 1461 | "Exceptions attribute has wrong length in class file %s", CHECK_NULL); |
duke@435 | 1462 | } |
duke@435 | 1463 | return checked_exceptions_start; |
duke@435 | 1464 | } |
duke@435 | 1465 | |
kamg@1941 | 1466 | void ClassFileParser::throwIllegalSignature( |
kamg@1941 | 1467 | const char* type, symbolHandle name, symbolHandle sig, TRAPS) { |
kamg@1941 | 1468 | ResourceMark rm(THREAD); |
kamg@1941 | 1469 | Exceptions::fthrow(THREAD_AND_LOCATION, |
kamg@1941 | 1470 | vmSymbols::java_lang_ClassFormatError(), |
kamg@1941 | 1471 | "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
kamg@1941 | 1472 | name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
kamg@1941 | 1473 | } |
duke@435 | 1474 | |
duke@435 | 1475 | #define MAX_ARGS_SIZE 255 |
duke@435 | 1476 | #define MAX_CODE_SIZE 65535 |
duke@435 | 1477 | #define INITIAL_MAX_LVT_NUMBER 256 |
duke@435 | 1478 | |
duke@435 | 1479 | // Note: the parse_method below is big and clunky because all parsing of the code and exceptions |
duke@435 | 1480 | // attribute is inlined. This is curbersome to avoid since we inline most of the parts in the |
duke@435 | 1481 | // methodOop to save footprint, so we only know the size of the resulting methodOop when the |
duke@435 | 1482 | // entire method attribute is parsed. |
duke@435 | 1483 | // |
duke@435 | 1484 | // The promoted_flags parameter is used to pass relevant access_flags |
duke@435 | 1485 | // from the method back up to the containing klass. These flag values |
duke@435 | 1486 | // are added to klass's access_flags. |
duke@435 | 1487 | |
duke@435 | 1488 | methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface, |
duke@435 | 1489 | AccessFlags *promoted_flags, |
duke@435 | 1490 | typeArrayHandle* method_annotations, |
duke@435 | 1491 | typeArrayHandle* method_parameter_annotations, |
duke@435 | 1492 | typeArrayHandle* method_default_annotations, |
duke@435 | 1493 | TRAPS) { |
duke@435 | 1494 | ClassFileStream* cfs = stream(); |
duke@435 | 1495 | methodHandle nullHandle; |
duke@435 | 1496 | ResourceMark rm(THREAD); |
duke@435 | 1497 | // Parse fixed parts |
duke@435 | 1498 | cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count |
duke@435 | 1499 | |
duke@435 | 1500 | int flags = cfs->get_u2_fast(); |
duke@435 | 1501 | u2 name_index = cfs->get_u2_fast(); |
duke@435 | 1502 | int cp_size = cp->length(); |
duke@435 | 1503 | check_property( |
duke@435 | 1504 | valid_cp_range(name_index, cp_size) && |
duke@435 | 1505 | cp->tag_at(name_index).is_utf8(), |
duke@435 | 1506 | "Illegal constant pool index %u for method name in class file %s", |
duke@435 | 1507 | name_index, CHECK_(nullHandle)); |
duke@435 | 1508 | symbolHandle name(THREAD, cp->symbol_at(name_index)); |
duke@435 | 1509 | verify_legal_method_name(name, CHECK_(nullHandle)); |
duke@435 | 1510 | |
duke@435 | 1511 | u2 signature_index = cfs->get_u2_fast(); |
duke@435 | 1512 | guarantee_property( |
duke@435 | 1513 | valid_cp_range(signature_index, cp_size) && |
duke@435 | 1514 | cp->tag_at(signature_index).is_utf8(), |
duke@435 | 1515 | "Illegal constant pool index %u for method signature in class file %s", |
duke@435 | 1516 | signature_index, CHECK_(nullHandle)); |
duke@435 | 1517 | symbolHandle signature(THREAD, cp->symbol_at(signature_index)); |
duke@435 | 1518 | |
duke@435 | 1519 | AccessFlags access_flags; |
duke@435 | 1520 | if (name == vmSymbols::class_initializer_name()) { |
duke@435 | 1521 | // We ignore the access flags for a class initializer. (JVM Spec. p. 116) |
duke@435 | 1522 | flags = JVM_ACC_STATIC; |
duke@435 | 1523 | } else { |
duke@435 | 1524 | verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); |
duke@435 | 1525 | } |
duke@435 | 1526 | |
duke@435 | 1527 | int args_size = -1; // only used when _need_verify is true |
duke@435 | 1528 | if (_need_verify) { |
duke@435 | 1529 | args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + |
duke@435 | 1530 | verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
duke@435 | 1531 | if (args_size > MAX_ARGS_SIZE) { |
duke@435 | 1532 | classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); |
duke@435 | 1533 | } |
duke@435 | 1534 | } |
duke@435 | 1535 | |
duke@435 | 1536 | access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); |
duke@435 | 1537 | |
duke@435 | 1538 | // Default values for code and exceptions attribute elements |
duke@435 | 1539 | u2 max_stack = 0; |
duke@435 | 1540 | u2 max_locals = 0; |
duke@435 | 1541 | u4 code_length = 0; |
duke@435 | 1542 | u1* code_start = 0; |
duke@435 | 1543 | u2 exception_table_length = 0; |
duke@435 | 1544 | typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array()); |
duke@435 | 1545 | u2 checked_exceptions_length = 0; |
duke@435 | 1546 | u2* checked_exceptions_start = NULL; |
duke@435 | 1547 | CompressedLineNumberWriteStream* linenumber_table = NULL; |
duke@435 | 1548 | int linenumber_table_length = 0; |
duke@435 | 1549 | int total_lvt_length = 0; |
duke@435 | 1550 | u2 lvt_cnt = 0; |
duke@435 | 1551 | u2 lvtt_cnt = 0; |
duke@435 | 1552 | bool lvt_allocated = false; |
duke@435 | 1553 | u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; |
duke@435 | 1554 | u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; |
duke@435 | 1555 | u2* localvariable_table_length; |
duke@435 | 1556 | u2** localvariable_table_start; |
duke@435 | 1557 | u2* localvariable_type_table_length; |
duke@435 | 1558 | u2** localvariable_type_table_start; |
duke@435 | 1559 | bool parsed_code_attribute = false; |
duke@435 | 1560 | bool parsed_checked_exceptions_attribute = false; |
duke@435 | 1561 | bool parsed_stackmap_attribute = false; |
duke@435 | 1562 | // stackmap attribute - JDK1.5 |
duke@435 | 1563 | typeArrayHandle stackmap_data; |
duke@435 | 1564 | u2 generic_signature_index = 0; |
duke@435 | 1565 | u1* runtime_visible_annotations = NULL; |
duke@435 | 1566 | int runtime_visible_annotations_length = 0; |
duke@435 | 1567 | u1* runtime_invisible_annotations = NULL; |
duke@435 | 1568 | int runtime_invisible_annotations_length = 0; |
duke@435 | 1569 | u1* runtime_visible_parameter_annotations = NULL; |
duke@435 | 1570 | int runtime_visible_parameter_annotations_length = 0; |
duke@435 | 1571 | u1* runtime_invisible_parameter_annotations = NULL; |
duke@435 | 1572 | int runtime_invisible_parameter_annotations_length = 0; |
duke@435 | 1573 | u1* annotation_default = NULL; |
duke@435 | 1574 | int annotation_default_length = 0; |
duke@435 | 1575 | |
duke@435 | 1576 | // Parse code and exceptions attribute |
duke@435 | 1577 | u2 method_attributes_count = cfs->get_u2_fast(); |
duke@435 | 1578 | while (method_attributes_count--) { |
duke@435 | 1579 | cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length |
duke@435 | 1580 | u2 method_attribute_name_index = cfs->get_u2_fast(); |
duke@435 | 1581 | u4 method_attribute_length = cfs->get_u4_fast(); |
duke@435 | 1582 | check_property( |
duke@435 | 1583 | valid_cp_range(method_attribute_name_index, cp_size) && |
duke@435 | 1584 | cp->tag_at(method_attribute_name_index).is_utf8(), |
duke@435 | 1585 | "Invalid method attribute name index %u in class file %s", |
duke@435 | 1586 | method_attribute_name_index, CHECK_(nullHandle)); |
duke@435 | 1587 | |
duke@435 | 1588 | symbolOop method_attribute_name = cp->symbol_at(method_attribute_name_index); |
duke@435 | 1589 | if (method_attribute_name == vmSymbols::tag_code()) { |
duke@435 | 1590 | // Parse Code attribute |
duke@435 | 1591 | if (_need_verify) { |
duke@435 | 1592 | guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(), |
duke@435 | 1593 | "Code attribute in native or abstract methods in class file %s", |
duke@435 | 1594 | CHECK_(nullHandle)); |
duke@435 | 1595 | } |
duke@435 | 1596 | if (parsed_code_attribute) { |
duke@435 | 1597 | classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); |
duke@435 | 1598 | } |
duke@435 | 1599 | parsed_code_attribute = true; |
duke@435 | 1600 | |
duke@435 | 1601 | // Stack size, locals size, and code size |
duke@435 | 1602 | if (_major_version == 45 && _minor_version <= 2) { |
duke@435 | 1603 | cfs->guarantee_more(4, CHECK_(nullHandle)); |
duke@435 | 1604 | max_stack = cfs->get_u1_fast(); |
duke@435 | 1605 | max_locals = cfs->get_u1_fast(); |
duke@435 | 1606 | code_length = cfs->get_u2_fast(); |
duke@435 | 1607 | } else { |
duke@435 | 1608 | cfs->guarantee_more(8, CHECK_(nullHandle)); |
duke@435 | 1609 | max_stack = cfs->get_u2_fast(); |
duke@435 | 1610 | max_locals = cfs->get_u2_fast(); |
duke@435 | 1611 | code_length = cfs->get_u4_fast(); |
duke@435 | 1612 | } |
duke@435 | 1613 | if (_need_verify) { |
duke@435 | 1614 | guarantee_property(args_size <= max_locals, |
duke@435 | 1615 | "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); |
duke@435 | 1616 | guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, |
duke@435 | 1617 | "Invalid method Code length %u in class file %s", |
duke@435 | 1618 | code_length, CHECK_(nullHandle)); |
duke@435 | 1619 | } |
duke@435 | 1620 | // Code pointer |
duke@435 | 1621 | code_start = cfs->get_u1_buffer(); |
duke@435 | 1622 | assert(code_start != NULL, "null code start"); |
duke@435 | 1623 | cfs->guarantee_more(code_length, CHECK_(nullHandle)); |
duke@435 | 1624 | cfs->skip_u1_fast(code_length); |
duke@435 | 1625 | |
duke@435 | 1626 | // Exception handler table |
duke@435 | 1627 | cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length |
duke@435 | 1628 | exception_table_length = cfs->get_u2_fast(); |
duke@435 | 1629 | if (exception_table_length > 0) { |
duke@435 | 1630 | exception_handlers = |
duke@435 | 1631 | parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle)); |
duke@435 | 1632 | } |
duke@435 | 1633 | |
duke@435 | 1634 | // Parse additional attributes in code attribute |
duke@435 | 1635 | cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count |
duke@435 | 1636 | u2 code_attributes_count = cfs->get_u2_fast(); |
kamg@527 | 1637 | |
kamg@527 | 1638 | unsigned int calculated_attribute_length = 0; |
kamg@527 | 1639 | |
kamg@527 | 1640 | if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
kamg@527 | 1641 | calculated_attribute_length = |
kamg@527 | 1642 | sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
kamg@527 | 1643 | } else { |
kamg@527 | 1644 | // max_stack, locals and length are smaller in pre-version 45.2 classes |
kamg@527 | 1645 | calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
kamg@527 | 1646 | } |
kamg@527 | 1647 | calculated_attribute_length += |
kamg@527 | 1648 | code_length + |
kamg@527 | 1649 | sizeof(exception_table_length) + |
kamg@527 | 1650 | sizeof(code_attributes_count) + |
kamg@527 | 1651 | exception_table_length * |
kamg@527 | 1652 | ( sizeof(u2) + // start_pc |
kamg@527 | 1653 | sizeof(u2) + // end_pc |
kamg@527 | 1654 | sizeof(u2) + // handler_pc |
kamg@527 | 1655 | sizeof(u2) ); // catch_type_index |
duke@435 | 1656 | |
duke@435 | 1657 | while (code_attributes_count--) { |
duke@435 | 1658 | cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length |
duke@435 | 1659 | u2 code_attribute_name_index = cfs->get_u2_fast(); |
duke@435 | 1660 | u4 code_attribute_length = cfs->get_u4_fast(); |
duke@435 | 1661 | calculated_attribute_length += code_attribute_length + |
duke@435 | 1662 | sizeof(code_attribute_name_index) + |
duke@435 | 1663 | sizeof(code_attribute_length); |
duke@435 | 1664 | check_property(valid_cp_range(code_attribute_name_index, cp_size) && |
duke@435 | 1665 | cp->tag_at(code_attribute_name_index).is_utf8(), |
duke@435 | 1666 | "Invalid code attribute name index %u in class file %s", |
duke@435 | 1667 | code_attribute_name_index, |
duke@435 | 1668 | CHECK_(nullHandle)); |
duke@435 | 1669 | if (LoadLineNumberTables && |
duke@435 | 1670 | cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { |
duke@435 | 1671 | // Parse and compress line number table |
duke@435 | 1672 | parse_linenumber_table(code_attribute_length, code_length, |
duke@435 | 1673 | &linenumber_table, CHECK_(nullHandle)); |
duke@435 | 1674 | |
duke@435 | 1675 | } else if (LoadLocalVariableTables && |
duke@435 | 1676 | cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { |
duke@435 | 1677 | // Parse local variable table |
duke@435 | 1678 | if (!lvt_allocated) { |
duke@435 | 1679 | localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1680 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1681 | localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1682 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1683 | localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1684 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1685 | localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1686 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1687 | lvt_allocated = true; |
duke@435 | 1688 | } |
duke@435 | 1689 | if (lvt_cnt == max_lvt_cnt) { |
duke@435 | 1690 | max_lvt_cnt <<= 1; |
duke@435 | 1691 | REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); |
duke@435 | 1692 | REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); |
duke@435 | 1693 | } |
duke@435 | 1694 | localvariable_table_start[lvt_cnt] = |
duke@435 | 1695 | parse_localvariable_table(code_length, |
duke@435 | 1696 | max_locals, |
duke@435 | 1697 | code_attribute_length, |
duke@435 | 1698 | cp, |
duke@435 | 1699 | &localvariable_table_length[lvt_cnt], |
duke@435 | 1700 | false, // is not LVTT |
duke@435 | 1701 | CHECK_(nullHandle)); |
duke@435 | 1702 | total_lvt_length += localvariable_table_length[lvt_cnt]; |
duke@435 | 1703 | lvt_cnt++; |
duke@435 | 1704 | } else if (LoadLocalVariableTypeTables && |
duke@435 | 1705 | _major_version >= JAVA_1_5_VERSION && |
duke@435 | 1706 | cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { |
duke@435 | 1707 | if (!lvt_allocated) { |
duke@435 | 1708 | localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1709 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1710 | localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1711 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1712 | localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1713 | THREAD, u2, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1714 | localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 1715 | THREAD, u2*, INITIAL_MAX_LVT_NUMBER); |
duke@435 | 1716 | lvt_allocated = true; |
duke@435 | 1717 | } |
duke@435 | 1718 | // Parse local variable type table |
duke@435 | 1719 | if (lvtt_cnt == max_lvtt_cnt) { |
duke@435 | 1720 | max_lvtt_cnt <<= 1; |
duke@435 | 1721 | REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); |
duke@435 | 1722 | REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); |
duke@435 | 1723 | } |
duke@435 | 1724 | localvariable_type_table_start[lvtt_cnt] = |
duke@435 | 1725 | parse_localvariable_table(code_length, |
duke@435 | 1726 | max_locals, |
duke@435 | 1727 | code_attribute_length, |
duke@435 | 1728 | cp, |
duke@435 | 1729 | &localvariable_type_table_length[lvtt_cnt], |
duke@435 | 1730 | true, // is LVTT |
duke@435 | 1731 | CHECK_(nullHandle)); |
duke@435 | 1732 | lvtt_cnt++; |
duke@435 | 1733 | } else if (UseSplitVerifier && |
duke@435 | 1734 | _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && |
duke@435 | 1735 | cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { |
duke@435 | 1736 | // Stack map is only needed by the new verifier in JDK1.5. |
duke@435 | 1737 | if (parsed_stackmap_attribute) { |
duke@435 | 1738 | classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); |
duke@435 | 1739 | } |
duke@435 | 1740 | typeArrayOop sm = |
duke@435 | 1741 | parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1742 | stackmap_data = typeArrayHandle(THREAD, sm); |
duke@435 | 1743 | parsed_stackmap_attribute = true; |
duke@435 | 1744 | } else { |
duke@435 | 1745 | // Skip unknown attributes |
duke@435 | 1746 | cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1747 | } |
duke@435 | 1748 | } |
duke@435 | 1749 | // check method attribute length |
duke@435 | 1750 | if (_need_verify) { |
duke@435 | 1751 | guarantee_property(method_attribute_length == calculated_attribute_length, |
duke@435 | 1752 | "Code segment has wrong length in class file %s", CHECK_(nullHandle)); |
duke@435 | 1753 | } |
duke@435 | 1754 | } else if (method_attribute_name == vmSymbols::tag_exceptions()) { |
duke@435 | 1755 | // Parse Exceptions attribute |
duke@435 | 1756 | if (parsed_checked_exceptions_attribute) { |
duke@435 | 1757 | classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); |
duke@435 | 1758 | } |
duke@435 | 1759 | parsed_checked_exceptions_attribute = true; |
duke@435 | 1760 | checked_exceptions_start = |
duke@435 | 1761 | parse_checked_exceptions(&checked_exceptions_length, |
duke@435 | 1762 | method_attribute_length, |
duke@435 | 1763 | cp, CHECK_(nullHandle)); |
duke@435 | 1764 | } else if (method_attribute_name == vmSymbols::tag_synthetic()) { |
duke@435 | 1765 | if (method_attribute_length != 0) { |
duke@435 | 1766 | classfile_parse_error( |
duke@435 | 1767 | "Invalid Synthetic method attribute length %u in class file %s", |
duke@435 | 1768 | method_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1769 | } |
duke@435 | 1770 | // Should we check that there hasn't already been a synthetic attribute? |
duke@435 | 1771 | access_flags.set_is_synthetic(); |
duke@435 | 1772 | } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 |
duke@435 | 1773 | if (method_attribute_length != 0) { |
duke@435 | 1774 | classfile_parse_error( |
duke@435 | 1775 | "Invalid Deprecated method attribute length %u in class file %s", |
duke@435 | 1776 | method_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1777 | } |
duke@435 | 1778 | } else if (_major_version >= JAVA_1_5_VERSION) { |
duke@435 | 1779 | if (method_attribute_name == vmSymbols::tag_signature()) { |
duke@435 | 1780 | if (method_attribute_length != 2) { |
duke@435 | 1781 | classfile_parse_error( |
duke@435 | 1782 | "Invalid Signature attribute length %u in class file %s", |
duke@435 | 1783 | method_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1784 | } |
duke@435 | 1785 | cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index |
duke@435 | 1786 | generic_signature_index = cfs->get_u2_fast(); |
duke@435 | 1787 | } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { |
duke@435 | 1788 | runtime_visible_annotations_length = method_attribute_length; |
duke@435 | 1789 | runtime_visible_annotations = cfs->get_u1_buffer(); |
duke@435 | 1790 | assert(runtime_visible_annotations != NULL, "null visible annotations"); |
duke@435 | 1791 | cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
duke@435 | 1792 | } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { |
duke@435 | 1793 | runtime_invisible_annotations_length = method_attribute_length; |
duke@435 | 1794 | runtime_invisible_annotations = cfs->get_u1_buffer(); |
duke@435 | 1795 | assert(runtime_invisible_annotations != NULL, "null invisible annotations"); |
duke@435 | 1796 | cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); |
duke@435 | 1797 | } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { |
duke@435 | 1798 | runtime_visible_parameter_annotations_length = method_attribute_length; |
duke@435 | 1799 | runtime_visible_parameter_annotations = cfs->get_u1_buffer(); |
duke@435 | 1800 | assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); |
duke@435 | 1801 | cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); |
duke@435 | 1802 | } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { |
duke@435 | 1803 | runtime_invisible_parameter_annotations_length = method_attribute_length; |
duke@435 | 1804 | runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); |
duke@435 | 1805 | assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); |
duke@435 | 1806 | cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); |
duke@435 | 1807 | } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { |
duke@435 | 1808 | annotation_default_length = method_attribute_length; |
duke@435 | 1809 | annotation_default = cfs->get_u1_buffer(); |
duke@435 | 1810 | assert(annotation_default != NULL, "null annotation default"); |
duke@435 | 1811 | cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); |
duke@435 | 1812 | } else { |
duke@435 | 1813 | // Skip unknown attributes |
duke@435 | 1814 | cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1815 | } |
duke@435 | 1816 | } else { |
duke@435 | 1817 | // Skip unknown attributes |
duke@435 | 1818 | cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); |
duke@435 | 1819 | } |
duke@435 | 1820 | } |
duke@435 | 1821 | |
duke@435 | 1822 | if (linenumber_table != NULL) { |
duke@435 | 1823 | linenumber_table->write_terminator(); |
duke@435 | 1824 | linenumber_table_length = linenumber_table->position(); |
duke@435 | 1825 | } |
duke@435 | 1826 | |
duke@435 | 1827 | // Make sure there's at least one Code attribute in non-native/non-abstract method |
duke@435 | 1828 | if (_need_verify) { |
duke@435 | 1829 | guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, |
duke@435 | 1830 | "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); |
duke@435 | 1831 | } |
duke@435 | 1832 | |
duke@435 | 1833 | // All sizing information for a methodOop is finally available, now create it |
duke@435 | 1834 | methodOop m_oop = oopFactory::new_method( |
duke@435 | 1835 | code_length, access_flags, linenumber_table_length, |
jmasa@953 | 1836 | total_lvt_length, checked_exceptions_length, |
jmasa@953 | 1837 | methodOopDesc::IsSafeConc, CHECK_(nullHandle)); |
duke@435 | 1838 | methodHandle m (THREAD, m_oop); |
duke@435 | 1839 | |
duke@435 | 1840 | ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize); |
duke@435 | 1841 | |
duke@435 | 1842 | // Fill in information from fixed part (access_flags already set) |
duke@435 | 1843 | m->set_constants(cp()); |
duke@435 | 1844 | m->set_name_index(name_index); |
duke@435 | 1845 | m->set_signature_index(signature_index); |
duke@435 | 1846 | m->set_generic_signature_index(generic_signature_index); |
duke@435 | 1847 | #ifdef CC_INTERP |
duke@435 | 1848 | // hmm is there a gc issue here?? |
duke@435 | 1849 | ResultTypeFinder rtf(cp->symbol_at(signature_index)); |
duke@435 | 1850 | m->set_result_index(rtf.type()); |
duke@435 | 1851 | #endif |
duke@435 | 1852 | |
duke@435 | 1853 | if (args_size >= 0) { |
duke@435 | 1854 | m->set_size_of_parameters(args_size); |
duke@435 | 1855 | } else { |
duke@435 | 1856 | m->compute_size_of_parameters(THREAD); |
duke@435 | 1857 | } |
duke@435 | 1858 | #ifdef ASSERT |
duke@435 | 1859 | if (args_size >= 0) { |
duke@435 | 1860 | m->compute_size_of_parameters(THREAD); |
duke@435 | 1861 | assert(args_size == m->size_of_parameters(), ""); |
duke@435 | 1862 | } |
duke@435 | 1863 | #endif |
duke@435 | 1864 | |
duke@435 | 1865 | // Fill in code attribute information |
duke@435 | 1866 | m->set_max_stack(max_stack); |
duke@435 | 1867 | m->set_max_locals(max_locals); |
duke@435 | 1868 | m->constMethod()->set_stackmap_data(stackmap_data()); |
duke@435 | 1869 | |
duke@435 | 1870 | /** |
duke@435 | 1871 | * The exception_table field is the flag used to indicate |
duke@435 | 1872 | * that the methodOop and it's associated constMethodOop are partially |
duke@435 | 1873 | * initialized and thus are exempt from pre/post GC verification. Once |
duke@435 | 1874 | * the field is set, the oops are considered fully initialized so make |
duke@435 | 1875 | * sure that the oops can pass verification when this field is set. |
duke@435 | 1876 | */ |
duke@435 | 1877 | m->set_exception_table(exception_handlers()); |
duke@435 | 1878 | |
duke@435 | 1879 | // Copy byte codes |
twisti@1573 | 1880 | m->set_code(code_start); |
duke@435 | 1881 | |
duke@435 | 1882 | // Copy line number table |
duke@435 | 1883 | if (linenumber_table != NULL) { |
duke@435 | 1884 | memcpy(m->compressed_linenumber_table(), |
duke@435 | 1885 | linenumber_table->buffer(), linenumber_table_length); |
duke@435 | 1886 | } |
duke@435 | 1887 | |
duke@435 | 1888 | // Copy checked exceptions |
duke@435 | 1889 | if (checked_exceptions_length > 0) { |
duke@435 | 1890 | int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); |
duke@435 | 1891 | copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); |
duke@435 | 1892 | } |
duke@435 | 1893 | |
duke@435 | 1894 | /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. |
duke@435 | 1895 | * |
duke@435 | 1896 | * Rules for LVT's and LVTT's are: |
duke@435 | 1897 | * - There can be any number of LVT's and LVTT's. |
duke@435 | 1898 | * - If there are n LVT's, it is the same as if there was just |
duke@435 | 1899 | * one LVT containing all the entries from the n LVT's. |
duke@435 | 1900 | * - There may be no more than one LVT entry per local variable. |
duke@435 | 1901 | * Two LVT entries are 'equal' if these fields are the same: |
duke@435 | 1902 | * start_pc, length, name, slot |
duke@435 | 1903 | * - There may be no more than one LVTT entry per each LVT entry. |
duke@435 | 1904 | * Each LVTT entry has to match some LVT entry. |
duke@435 | 1905 | * - HotSpot internal LVT keeps natural ordering of class file LVT entries. |
duke@435 | 1906 | */ |
duke@435 | 1907 | if (total_lvt_length > 0) { |
duke@435 | 1908 | int tbl_no, idx; |
duke@435 | 1909 | |
duke@435 | 1910 | promoted_flags->set_has_localvariable_table(); |
duke@435 | 1911 | |
duke@435 | 1912 | LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); |
duke@435 | 1913 | initialize_hashtable(lvt_Hash); |
duke@435 | 1914 | |
duke@435 | 1915 | // To fill LocalVariableTable in |
duke@435 | 1916 | Classfile_LVT_Element* cf_lvt; |
duke@435 | 1917 | LocalVariableTableElement* lvt = m->localvariable_table_start(); |
duke@435 | 1918 | |
duke@435 | 1919 | for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { |
duke@435 | 1920 | cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; |
duke@435 | 1921 | for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { |
duke@435 | 1922 | copy_lvt_element(&cf_lvt[idx], lvt); |
duke@435 | 1923 | // If no duplicates, add LVT elem in hashtable lvt_Hash. |
duke@435 | 1924 | if (LVT_put_after_lookup(lvt, lvt_Hash) == false |
duke@435 | 1925 | && _need_verify |
duke@435 | 1926 | && _major_version >= JAVA_1_5_VERSION ) { |
duke@435 | 1927 | clear_hashtable(lvt_Hash); |
duke@435 | 1928 | classfile_parse_error("Duplicated LocalVariableTable attribute " |
duke@435 | 1929 | "entry for '%s' in class file %s", |
duke@435 | 1930 | cp->symbol_at(lvt->name_cp_index)->as_utf8(), |
duke@435 | 1931 | CHECK_(nullHandle)); |
duke@435 | 1932 | } |
duke@435 | 1933 | } |
duke@435 | 1934 | } |
duke@435 | 1935 | |
duke@435 | 1936 | // To merge LocalVariableTable and LocalVariableTypeTable |
duke@435 | 1937 | Classfile_LVT_Element* cf_lvtt; |
duke@435 | 1938 | LocalVariableTableElement lvtt_elem; |
duke@435 | 1939 | |
duke@435 | 1940 | for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { |
duke@435 | 1941 | cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; |
duke@435 | 1942 | for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { |
duke@435 | 1943 | copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); |
duke@435 | 1944 | int index = hash(&lvtt_elem); |
duke@435 | 1945 | LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); |
duke@435 | 1946 | if (entry == NULL) { |
duke@435 | 1947 | if (_need_verify) { |
duke@435 | 1948 | clear_hashtable(lvt_Hash); |
duke@435 | 1949 | classfile_parse_error("LVTT entry for '%s' in class file %s " |
duke@435 | 1950 | "does not match any LVT entry", |
duke@435 | 1951 | cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
duke@435 | 1952 | CHECK_(nullHandle)); |
duke@435 | 1953 | } |
duke@435 | 1954 | } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { |
duke@435 | 1955 | clear_hashtable(lvt_Hash); |
duke@435 | 1956 | classfile_parse_error("Duplicated LocalVariableTypeTable attribute " |
duke@435 | 1957 | "entry for '%s' in class file %s", |
duke@435 | 1958 | cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), |
duke@435 | 1959 | CHECK_(nullHandle)); |
duke@435 | 1960 | } else { |
duke@435 | 1961 | // to add generic signatures into LocalVariableTable |
duke@435 | 1962 | entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; |
duke@435 | 1963 | } |
duke@435 | 1964 | } |
duke@435 | 1965 | } |
duke@435 | 1966 | clear_hashtable(lvt_Hash); |
duke@435 | 1967 | } |
duke@435 | 1968 | |
duke@435 | 1969 | *method_annotations = assemble_annotations(runtime_visible_annotations, |
duke@435 | 1970 | runtime_visible_annotations_length, |
duke@435 | 1971 | runtime_invisible_annotations, |
duke@435 | 1972 | runtime_invisible_annotations_length, |
duke@435 | 1973 | CHECK_(nullHandle)); |
duke@435 | 1974 | *method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations, |
duke@435 | 1975 | runtime_visible_parameter_annotations_length, |
duke@435 | 1976 | runtime_invisible_parameter_annotations, |
duke@435 | 1977 | runtime_invisible_parameter_annotations_length, |
duke@435 | 1978 | CHECK_(nullHandle)); |
duke@435 | 1979 | *method_default_annotations = assemble_annotations(annotation_default, |
duke@435 | 1980 | annotation_default_length, |
duke@435 | 1981 | NULL, |
duke@435 | 1982 | 0, |
duke@435 | 1983 | CHECK_(nullHandle)); |
duke@435 | 1984 | |
duke@435 | 1985 | if (name() == vmSymbols::finalize_method_name() && |
duke@435 | 1986 | signature() == vmSymbols::void_method_signature()) { |
duke@435 | 1987 | if (m->is_empty_method()) { |
duke@435 | 1988 | _has_empty_finalizer = true; |
duke@435 | 1989 | } else { |
duke@435 | 1990 | _has_finalizer = true; |
duke@435 | 1991 | } |
duke@435 | 1992 | } |
duke@435 | 1993 | if (name() == vmSymbols::object_initializer_name() && |
duke@435 | 1994 | signature() == vmSymbols::void_method_signature() && |
duke@435 | 1995 | m->is_vanilla_constructor()) { |
duke@435 | 1996 | _has_vanilla_constructor = true; |
duke@435 | 1997 | } |
duke@435 | 1998 | |
jrose@1862 | 1999 | if (EnableMethodHandles && (m->is_method_handle_invoke() || |
jrose@1862 | 2000 | m->is_method_handle_adapter())) { |
jrose@1145 | 2001 | THROW_MSG_(vmSymbols::java_lang_VirtualMachineError(), |
jrose@1145 | 2002 | "Method handle invokers must be defined internally to the VM", nullHandle); |
jrose@1145 | 2003 | } |
jrose@1145 | 2004 | |
duke@435 | 2005 | return m; |
duke@435 | 2006 | } |
duke@435 | 2007 | |
duke@435 | 2008 | |
duke@435 | 2009 | // The promoted_flags parameter is used to pass relevant access_flags |
duke@435 | 2010 | // from the methods back up to the containing klass. These flag values |
duke@435 | 2011 | // are added to klass's access_flags. |
duke@435 | 2012 | |
duke@435 | 2013 | objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface, |
duke@435 | 2014 | AccessFlags* promoted_flags, |
duke@435 | 2015 | bool* has_final_method, |
duke@435 | 2016 | objArrayOop* methods_annotations_oop, |
duke@435 | 2017 | objArrayOop* methods_parameter_annotations_oop, |
duke@435 | 2018 | objArrayOop* methods_default_annotations_oop, |
duke@435 | 2019 | TRAPS) { |
duke@435 | 2020 | ClassFileStream* cfs = stream(); |
duke@435 | 2021 | objArrayHandle nullHandle; |
duke@435 | 2022 | typeArrayHandle method_annotations; |
duke@435 | 2023 | typeArrayHandle method_parameter_annotations; |
duke@435 | 2024 | typeArrayHandle method_default_annotations; |
duke@435 | 2025 | cfs->guarantee_more(2, CHECK_(nullHandle)); // length |
duke@435 | 2026 | u2 length = cfs->get_u2_fast(); |
duke@435 | 2027 | if (length == 0) { |
duke@435 | 2028 | return objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); |
duke@435 | 2029 | } else { |
duke@435 | 2030 | objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); |
duke@435 | 2031 | objArrayHandle methods(THREAD, m); |
duke@435 | 2032 | HandleMark hm(THREAD); |
duke@435 | 2033 | objArrayHandle methods_annotations; |
duke@435 | 2034 | objArrayHandle methods_parameter_annotations; |
duke@435 | 2035 | objArrayHandle methods_default_annotations; |
duke@435 | 2036 | for (int index = 0; index < length; index++) { |
duke@435 | 2037 | methodHandle method = parse_method(cp, is_interface, |
duke@435 | 2038 | promoted_flags, |
duke@435 | 2039 | &method_annotations, |
duke@435 | 2040 | &method_parameter_annotations, |
duke@435 | 2041 | &method_default_annotations, |
duke@435 | 2042 | CHECK_(nullHandle)); |
duke@435 | 2043 | if (method->is_final()) { |
duke@435 | 2044 | *has_final_method = true; |
duke@435 | 2045 | } |
duke@435 | 2046 | methods->obj_at_put(index, method()); |
duke@435 | 2047 | if (method_annotations.not_null()) { |
duke@435 | 2048 | if (methods_annotations.is_null()) { |
duke@435 | 2049 | objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); |
duke@435 | 2050 | methods_annotations = objArrayHandle(THREAD, md); |
duke@435 | 2051 | } |
duke@435 | 2052 | methods_annotations->obj_at_put(index, method_annotations()); |
duke@435 | 2053 | } |
duke@435 | 2054 | if (method_parameter_annotations.not_null()) { |
duke@435 | 2055 | if (methods_parameter_annotations.is_null()) { |
duke@435 | 2056 | objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); |
duke@435 | 2057 | methods_parameter_annotations = objArrayHandle(THREAD, md); |
duke@435 | 2058 | } |
duke@435 | 2059 | methods_parameter_annotations->obj_at_put(index, method_parameter_annotations()); |
duke@435 | 2060 | } |
duke@435 | 2061 | if (method_default_annotations.not_null()) { |
duke@435 | 2062 | if (methods_default_annotations.is_null()) { |
duke@435 | 2063 | objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); |
duke@435 | 2064 | methods_default_annotations = objArrayHandle(THREAD, md); |
duke@435 | 2065 | } |
duke@435 | 2066 | methods_default_annotations->obj_at_put(index, method_default_annotations()); |
duke@435 | 2067 | } |
duke@435 | 2068 | } |
duke@435 | 2069 | if (_need_verify && length > 1) { |
duke@435 | 2070 | // Check duplicated methods |
duke@435 | 2071 | ResourceMark rm(THREAD); |
duke@435 | 2072 | NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( |
duke@435 | 2073 | THREAD, NameSigHash*, HASH_ROW_SIZE); |
duke@435 | 2074 | initialize_hashtable(names_and_sigs); |
duke@435 | 2075 | bool dup = false; |
duke@435 | 2076 | { |
duke@435 | 2077 | debug_only(No_Safepoint_Verifier nsv;) |
duke@435 | 2078 | for (int i = 0; i < length; i++) { |
duke@435 | 2079 | methodOop m = (methodOop)methods->obj_at(i); |
duke@435 | 2080 | // If no duplicates, add name/signature in hashtable names_and_sigs. |
duke@435 | 2081 | if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { |
duke@435 | 2082 | dup = true; |
duke@435 | 2083 | break; |
duke@435 | 2084 | } |
duke@435 | 2085 | } |
duke@435 | 2086 | } |
duke@435 | 2087 | if (dup) { |
duke@435 | 2088 | classfile_parse_error("Duplicate method name&signature in class file %s", |
duke@435 | 2089 | CHECK_(nullHandle)); |
duke@435 | 2090 | } |
duke@435 | 2091 | } |
duke@435 | 2092 | |
duke@435 | 2093 | *methods_annotations_oop = methods_annotations(); |
duke@435 | 2094 | *methods_parameter_annotations_oop = methods_parameter_annotations(); |
duke@435 | 2095 | *methods_default_annotations_oop = methods_default_annotations(); |
duke@435 | 2096 | |
duke@435 | 2097 | return methods; |
duke@435 | 2098 | } |
duke@435 | 2099 | } |
duke@435 | 2100 | |
duke@435 | 2101 | |
duke@435 | 2102 | typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods, |
duke@435 | 2103 | objArrayHandle methods_annotations, |
duke@435 | 2104 | objArrayHandle methods_parameter_annotations, |
duke@435 | 2105 | objArrayHandle methods_default_annotations, |
duke@435 | 2106 | TRAPS) { |
duke@435 | 2107 | typeArrayHandle nullHandle; |
duke@435 | 2108 | int length = methods()->length(); |
duke@435 | 2109 | // If JVMTI original method ordering is enabled we have to |
duke@435 | 2110 | // remember the original class file ordering. |
duke@435 | 2111 | // We temporarily use the vtable_index field in the methodOop to store the |
duke@435 | 2112 | // class file index, so we can read in after calling qsort. |
duke@435 | 2113 | if (JvmtiExport::can_maintain_original_method_order()) { |
duke@435 | 2114 | for (int index = 0; index < length; index++) { |
duke@435 | 2115 | methodOop m = methodOop(methods->obj_at(index)); |
duke@435 | 2116 | assert(!m->valid_vtable_index(), "vtable index should not be set"); |
duke@435 | 2117 | m->set_vtable_index(index); |
duke@435 | 2118 | } |
duke@435 | 2119 | } |
duke@435 | 2120 | // Sort method array by ascending method name (for faster lookups & vtable construction) |
duke@435 | 2121 | // Note that the ordering is not alphabetical, see symbolOopDesc::fast_compare |
duke@435 | 2122 | methodOopDesc::sort_methods(methods(), |
duke@435 | 2123 | methods_annotations(), |
duke@435 | 2124 | methods_parameter_annotations(), |
duke@435 | 2125 | methods_default_annotations()); |
duke@435 | 2126 | |
duke@435 | 2127 | // If JVMTI original method ordering is enabled construct int array remembering the original ordering |
duke@435 | 2128 | if (JvmtiExport::can_maintain_original_method_order()) { |
duke@435 | 2129 | typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle)); |
duke@435 | 2130 | typeArrayHandle method_ordering(THREAD, new_ordering); |
duke@435 | 2131 | for (int index = 0; index < length; index++) { |
duke@435 | 2132 | methodOop m = methodOop(methods->obj_at(index)); |
duke@435 | 2133 | int old_index = m->vtable_index(); |
duke@435 | 2134 | assert(old_index >= 0 && old_index < length, "invalid method index"); |
duke@435 | 2135 | method_ordering->int_at_put(index, old_index); |
duke@435 | 2136 | m->set_vtable_index(methodOopDesc::invalid_vtable_index); |
duke@435 | 2137 | } |
duke@435 | 2138 | return method_ordering; |
duke@435 | 2139 | } else { |
duke@435 | 2140 | return typeArrayHandle(THREAD, Universe::the_empty_int_array()); |
duke@435 | 2141 | } |
duke@435 | 2142 | } |
duke@435 | 2143 | |
duke@435 | 2144 | |
duke@435 | 2145 | void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { |
duke@435 | 2146 | ClassFileStream* cfs = stream(); |
duke@435 | 2147 | cfs->guarantee_more(2, CHECK); // sourcefile_index |
duke@435 | 2148 | u2 sourcefile_index = cfs->get_u2_fast(); |
duke@435 | 2149 | check_property( |
duke@435 | 2150 | valid_cp_range(sourcefile_index, cp->length()) && |
duke@435 | 2151 | cp->tag_at(sourcefile_index).is_utf8(), |
duke@435 | 2152 | "Invalid SourceFile attribute at constant pool index %u in class file %s", |
duke@435 | 2153 | sourcefile_index, CHECK); |
duke@435 | 2154 | k->set_source_file_name(cp->symbol_at(sourcefile_index)); |
duke@435 | 2155 | } |
duke@435 | 2156 | |
duke@435 | 2157 | |
duke@435 | 2158 | |
duke@435 | 2159 | void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, |
duke@435 | 2160 | instanceKlassHandle k, |
duke@435 | 2161 | int length, TRAPS) { |
duke@435 | 2162 | ClassFileStream* cfs = stream(); |
duke@435 | 2163 | u1* sde_buffer = cfs->get_u1_buffer(); |
duke@435 | 2164 | assert(sde_buffer != NULL, "null sde buffer"); |
duke@435 | 2165 | |
duke@435 | 2166 | // Don't bother storing it if there is no way to retrieve it |
duke@435 | 2167 | if (JvmtiExport::can_get_source_debug_extension()) { |
duke@435 | 2168 | // Optimistically assume that only 1 byte UTF format is used |
duke@435 | 2169 | // (common case) |
duke@435 | 2170 | symbolOop sde_symbol = oopFactory::new_symbol((char*)sde_buffer, |
duke@435 | 2171 | length, CHECK); |
duke@435 | 2172 | k->set_source_debug_extension(sde_symbol); |
duke@435 | 2173 | } |
duke@435 | 2174 | // Got utf8 string, set stream position forward |
duke@435 | 2175 | cfs->skip_u1(length, CHECK); |
duke@435 | 2176 | } |
duke@435 | 2177 | |
duke@435 | 2178 | |
duke@435 | 2179 | // Inner classes can be static, private or protected (classic VM does this) |
duke@435 | 2180 | #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) |
duke@435 | 2181 | |
duke@435 | 2182 | // Return number of classes in the inner classes attribute table |
duke@435 | 2183 | u2 ClassFileParser::parse_classfile_inner_classes_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { |
duke@435 | 2184 | ClassFileStream* cfs = stream(); |
duke@435 | 2185 | cfs->guarantee_more(2, CHECK_0); // length |
duke@435 | 2186 | u2 length = cfs->get_u2_fast(); |
duke@435 | 2187 | |
duke@435 | 2188 | // 4-tuples of shorts [inner_class_info_index, outer_class_info_index, inner_name_index, inner_class_access_flags] |
duke@435 | 2189 | typeArrayOop ic = oopFactory::new_permanent_shortArray(length*4, CHECK_0); |
duke@435 | 2190 | typeArrayHandle inner_classes(THREAD, ic); |
duke@435 | 2191 | int index = 0; |
duke@435 | 2192 | int cp_size = cp->length(); |
duke@435 | 2193 | cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 |
duke@435 | 2194 | for (int n = 0; n < length; n++) { |
duke@435 | 2195 | // Inner class index |
duke@435 | 2196 | u2 inner_class_info_index = cfs->get_u2_fast(); |
duke@435 | 2197 | check_property( |
duke@435 | 2198 | inner_class_info_index == 0 || |
duke@435 | 2199 | (valid_cp_range(inner_class_info_index, cp_size) && |
jrose@866 | 2200 | is_klass_reference(cp, inner_class_info_index)), |
duke@435 | 2201 | "inner_class_info_index %u has bad constant type in class file %s", |
duke@435 | 2202 | inner_class_info_index, CHECK_0); |
duke@435 | 2203 | // Outer class index |
duke@435 | 2204 | u2 outer_class_info_index = cfs->get_u2_fast(); |
duke@435 | 2205 | check_property( |
duke@435 | 2206 | outer_class_info_index == 0 || |
duke@435 | 2207 | (valid_cp_range(outer_class_info_index, cp_size) && |
jrose@866 | 2208 | is_klass_reference(cp, outer_class_info_index)), |
duke@435 | 2209 | "outer_class_info_index %u has bad constant type in class file %s", |
duke@435 | 2210 | outer_class_info_index, CHECK_0); |
duke@435 | 2211 | // Inner class name |
duke@435 | 2212 | u2 inner_name_index = cfs->get_u2_fast(); |
duke@435 | 2213 | check_property( |
duke@435 | 2214 | inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && |
duke@435 | 2215 | cp->tag_at(inner_name_index).is_utf8()), |
duke@435 | 2216 | "inner_name_index %u has bad constant type in class file %s", |
duke@435 | 2217 | inner_name_index, CHECK_0); |
duke@435 | 2218 | if (_need_verify) { |
duke@435 | 2219 | guarantee_property(inner_class_info_index != outer_class_info_index, |
duke@435 | 2220 | "Class is both outer and inner class in class file %s", CHECK_0); |
duke@435 | 2221 | } |
duke@435 | 2222 | // Access flags |
duke@435 | 2223 | AccessFlags inner_access_flags; |
duke@435 | 2224 | jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; |
duke@435 | 2225 | if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { |
duke@435 | 2226 | // Set abstract bit for old class files for backward compatibility |
duke@435 | 2227 | flags |= JVM_ACC_ABSTRACT; |
duke@435 | 2228 | } |
duke@435 | 2229 | verify_legal_class_modifiers(flags, CHECK_0); |
duke@435 | 2230 | inner_access_flags.set_flags(flags); |
duke@435 | 2231 | |
duke@435 | 2232 | inner_classes->short_at_put(index++, inner_class_info_index); |
duke@435 | 2233 | inner_classes->short_at_put(index++, outer_class_info_index); |
duke@435 | 2234 | inner_classes->short_at_put(index++, inner_name_index); |
duke@435 | 2235 | inner_classes->short_at_put(index++, inner_access_flags.as_short()); |
duke@435 | 2236 | } |
duke@435 | 2237 | |
duke@435 | 2238 | // 4347400: make sure there's no duplicate entry in the classes array |
duke@435 | 2239 | if (_need_verify && _major_version >= JAVA_1_5_VERSION) { |
duke@435 | 2240 | for(int i = 0; i < inner_classes->length(); i += 4) { |
duke@435 | 2241 | for(int j = i + 4; j < inner_classes->length(); j += 4) { |
duke@435 | 2242 | guarantee_property((inner_classes->ushort_at(i) != inner_classes->ushort_at(j) || |
duke@435 | 2243 | inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) || |
duke@435 | 2244 | inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) || |
duke@435 | 2245 | inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)), |
duke@435 | 2246 | "Duplicate entry in InnerClasses in class file %s", |
duke@435 | 2247 | CHECK_0); |
duke@435 | 2248 | } |
duke@435 | 2249 | } |
duke@435 | 2250 | } |
duke@435 | 2251 | |
duke@435 | 2252 | // Update instanceKlass with inner class info. |
duke@435 | 2253 | k->set_inner_classes(inner_classes()); |
duke@435 | 2254 | return length; |
duke@435 | 2255 | } |
duke@435 | 2256 | |
duke@435 | 2257 | void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { |
duke@435 | 2258 | k->set_is_synthetic(); |
duke@435 | 2259 | } |
duke@435 | 2260 | |
duke@435 | 2261 | void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { |
duke@435 | 2262 | ClassFileStream* cfs = stream(); |
duke@435 | 2263 | u2 signature_index = cfs->get_u2(CHECK); |
duke@435 | 2264 | check_property( |
duke@435 | 2265 | valid_cp_range(signature_index, cp->length()) && |
duke@435 | 2266 | cp->tag_at(signature_index).is_utf8(), |
duke@435 | 2267 | "Invalid constant pool index %u in Signature attribute in class file %s", |
duke@435 | 2268 | signature_index, CHECK); |
duke@435 | 2269 | k->set_generic_signature(cp->symbol_at(signature_index)); |
duke@435 | 2270 | } |
duke@435 | 2271 | |
duke@435 | 2272 | void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { |
duke@435 | 2273 | ClassFileStream* cfs = stream(); |
duke@435 | 2274 | // Set inner classes attribute to default sentinel |
duke@435 | 2275 | k->set_inner_classes(Universe::the_empty_short_array()); |
duke@435 | 2276 | cfs->guarantee_more(2, CHECK); // attributes_count |
duke@435 | 2277 | u2 attributes_count = cfs->get_u2_fast(); |
duke@435 | 2278 | bool parsed_sourcefile_attribute = false; |
duke@435 | 2279 | bool parsed_innerclasses_attribute = false; |
duke@435 | 2280 | bool parsed_enclosingmethod_attribute = false; |
duke@435 | 2281 | u1* runtime_visible_annotations = NULL; |
duke@435 | 2282 | int runtime_visible_annotations_length = 0; |
duke@435 | 2283 | u1* runtime_invisible_annotations = NULL; |
duke@435 | 2284 | int runtime_invisible_annotations_length = 0; |
duke@435 | 2285 | // Iterate over attributes |
duke@435 | 2286 | while (attributes_count--) { |
duke@435 | 2287 | cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length |
duke@435 | 2288 | u2 attribute_name_index = cfs->get_u2_fast(); |
duke@435 | 2289 | u4 attribute_length = cfs->get_u4_fast(); |
duke@435 | 2290 | check_property( |
duke@435 | 2291 | valid_cp_range(attribute_name_index, cp->length()) && |
duke@435 | 2292 | cp->tag_at(attribute_name_index).is_utf8(), |
duke@435 | 2293 | "Attribute name has bad constant pool index %u in class file %s", |
duke@435 | 2294 | attribute_name_index, CHECK); |
duke@435 | 2295 | symbolOop tag = cp->symbol_at(attribute_name_index); |
duke@435 | 2296 | if (tag == vmSymbols::tag_source_file()) { |
duke@435 | 2297 | // Check for SourceFile tag |
duke@435 | 2298 | if (_need_verify) { |
duke@435 | 2299 | guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); |
duke@435 | 2300 | } |
duke@435 | 2301 | if (parsed_sourcefile_attribute) { |
duke@435 | 2302 | classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); |
duke@435 | 2303 | } else { |
duke@435 | 2304 | parsed_sourcefile_attribute = true; |
duke@435 | 2305 | } |
duke@435 | 2306 | parse_classfile_sourcefile_attribute(cp, k, CHECK); |
duke@435 | 2307 | } else if (tag == vmSymbols::tag_source_debug_extension()) { |
duke@435 | 2308 | // Check for SourceDebugExtension tag |
duke@435 | 2309 | parse_classfile_source_debug_extension_attribute(cp, k, (int)attribute_length, CHECK); |
duke@435 | 2310 | } else if (tag == vmSymbols::tag_inner_classes()) { |
duke@435 | 2311 | // Check for InnerClasses tag |
duke@435 | 2312 | if (parsed_innerclasses_attribute) { |
duke@435 | 2313 | classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); |
duke@435 | 2314 | } else { |
duke@435 | 2315 | parsed_innerclasses_attribute = true; |
duke@435 | 2316 | } |
duke@435 | 2317 | u2 num_of_classes = parse_classfile_inner_classes_attribute(cp, k, CHECK); |
duke@435 | 2318 | if (_need_verify && _major_version >= JAVA_1_5_VERSION) { |
duke@435 | 2319 | guarantee_property(attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes, |
duke@435 | 2320 | "Wrong InnerClasses attribute length in class file %s", CHECK); |
duke@435 | 2321 | } |
duke@435 | 2322 | } else if (tag == vmSymbols::tag_synthetic()) { |
duke@435 | 2323 | // Check for Synthetic tag |
duke@435 | 2324 | // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec |
duke@435 | 2325 | if (attribute_length != 0) { |
duke@435 | 2326 | classfile_parse_error( |
duke@435 | 2327 | "Invalid Synthetic classfile attribute length %u in class file %s", |
duke@435 | 2328 | attribute_length, CHECK); |
duke@435 | 2329 | } |
duke@435 | 2330 | parse_classfile_synthetic_attribute(cp, k, CHECK); |
duke@435 | 2331 | } else if (tag == vmSymbols::tag_deprecated()) { |
duke@435 | 2332 | // Check for Deprecatd tag - 4276120 |
duke@435 | 2333 | if (attribute_length != 0) { |
duke@435 | 2334 | classfile_parse_error( |
duke@435 | 2335 | "Invalid Deprecated classfile attribute length %u in class file %s", |
duke@435 | 2336 | attribute_length, CHECK); |
duke@435 | 2337 | } |
duke@435 | 2338 | } else if (_major_version >= JAVA_1_5_VERSION) { |
duke@435 | 2339 | if (tag == vmSymbols::tag_signature()) { |
duke@435 | 2340 | if (attribute_length != 2) { |
duke@435 | 2341 | classfile_parse_error( |
duke@435 | 2342 | "Wrong Signature attribute length %u in class file %s", |
duke@435 | 2343 | attribute_length, CHECK); |
duke@435 | 2344 | } |
duke@435 | 2345 | parse_classfile_signature_attribute(cp, k, CHECK); |
duke@435 | 2346 | } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
duke@435 | 2347 | runtime_visible_annotations_length = attribute_length; |
duke@435 | 2348 | runtime_visible_annotations = cfs->get_u1_buffer(); |
duke@435 | 2349 | assert(runtime_visible_annotations != NULL, "null visible annotations"); |
duke@435 | 2350 | cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
duke@435 | 2351 | } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { |
duke@435 | 2352 | runtime_invisible_annotations_length = attribute_length; |
duke@435 | 2353 | runtime_invisible_annotations = cfs->get_u1_buffer(); |
duke@435 | 2354 | assert(runtime_invisible_annotations != NULL, "null invisible annotations"); |
duke@435 | 2355 | cfs->skip_u1(runtime_invisible_annotations_length, CHECK); |
duke@435 | 2356 | } else if (tag == vmSymbols::tag_enclosing_method()) { |
duke@435 | 2357 | if (parsed_enclosingmethod_attribute) { |
duke@435 | 2358 | classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); |
duke@435 | 2359 | } else { |
duke@435 | 2360 | parsed_enclosingmethod_attribute = true; |
duke@435 | 2361 | } |
duke@435 | 2362 | cfs->guarantee_more(4, CHECK); // class_index, method_index |
duke@435 | 2363 | u2 class_index = cfs->get_u2_fast(); |
duke@435 | 2364 | u2 method_index = cfs->get_u2_fast(); |
duke@435 | 2365 | if (class_index == 0) { |
duke@435 | 2366 | classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
duke@435 | 2367 | } |
duke@435 | 2368 | // Validate the constant pool indices and types |
duke@435 | 2369 | if (!cp->is_within_bounds(class_index) || |
jrose@866 | 2370 | !is_klass_reference(cp, class_index)) { |
duke@435 | 2371 | classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
duke@435 | 2372 | } |
duke@435 | 2373 | if (method_index != 0 && |
duke@435 | 2374 | (!cp->is_within_bounds(method_index) || |
duke@435 | 2375 | !cp->tag_at(method_index).is_name_and_type())) { |
duke@435 | 2376 | classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
duke@435 | 2377 | } |
duke@435 | 2378 | k->set_enclosing_method_indices(class_index, method_index); |
duke@435 | 2379 | } else { |
duke@435 | 2380 | // Unknown attribute |
duke@435 | 2381 | cfs->skip_u1(attribute_length, CHECK); |
duke@435 | 2382 | } |
duke@435 | 2383 | } else { |
duke@435 | 2384 | // Unknown attribute |
duke@435 | 2385 | cfs->skip_u1(attribute_length, CHECK); |
duke@435 | 2386 | } |
duke@435 | 2387 | } |
duke@435 | 2388 | typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations, |
duke@435 | 2389 | runtime_visible_annotations_length, |
duke@435 | 2390 | runtime_invisible_annotations, |
duke@435 | 2391 | runtime_invisible_annotations_length, |
duke@435 | 2392 | CHECK); |
duke@435 | 2393 | k->set_class_annotations(annotations()); |
duke@435 | 2394 | } |
duke@435 | 2395 | |
duke@435 | 2396 | |
duke@435 | 2397 | typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, |
duke@435 | 2398 | int runtime_visible_annotations_length, |
duke@435 | 2399 | u1* runtime_invisible_annotations, |
duke@435 | 2400 | int runtime_invisible_annotations_length, TRAPS) { |
duke@435 | 2401 | typeArrayHandle annotations; |
duke@435 | 2402 | if (runtime_visible_annotations != NULL || |
duke@435 | 2403 | runtime_invisible_annotations != NULL) { |
duke@435 | 2404 | typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length + |
duke@435 | 2405 | runtime_invisible_annotations_length, CHECK_(annotations)); |
duke@435 | 2406 | annotations = typeArrayHandle(THREAD, anno); |
duke@435 | 2407 | if (runtime_visible_annotations != NULL) { |
duke@435 | 2408 | memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length); |
duke@435 | 2409 | } |
duke@435 | 2410 | if (runtime_invisible_annotations != NULL) { |
duke@435 | 2411 | memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length); |
duke@435 | 2412 | } |
duke@435 | 2413 | } |
duke@435 | 2414 | return annotations; |
duke@435 | 2415 | } |
duke@435 | 2416 | |
duke@435 | 2417 | |
duke@435 | 2418 | static void initialize_static_field(fieldDescriptor* fd, TRAPS) { |
duke@435 | 2419 | KlassHandle h_k (THREAD, fd->field_holder()); |
duke@435 | 2420 | assert(h_k.not_null() && fd->is_static(), "just checking"); |
duke@435 | 2421 | if (fd->has_initial_value()) { |
duke@435 | 2422 | BasicType t = fd->field_type(); |
duke@435 | 2423 | switch (t) { |
duke@435 | 2424 | case T_BYTE: |
duke@435 | 2425 | h_k()->byte_field_put(fd->offset(), fd->int_initial_value()); |
duke@435 | 2426 | break; |
duke@435 | 2427 | case T_BOOLEAN: |
duke@435 | 2428 | h_k()->bool_field_put(fd->offset(), fd->int_initial_value()); |
duke@435 | 2429 | break; |
duke@435 | 2430 | case T_CHAR: |
duke@435 | 2431 | h_k()->char_field_put(fd->offset(), fd->int_initial_value()); |
duke@435 | 2432 | break; |
duke@435 | 2433 | case T_SHORT: |
duke@435 | 2434 | h_k()->short_field_put(fd->offset(), fd->int_initial_value()); |
duke@435 | 2435 | break; |
duke@435 | 2436 | case T_INT: |
duke@435 | 2437 | h_k()->int_field_put(fd->offset(), fd->int_initial_value()); |
duke@435 | 2438 | break; |
duke@435 | 2439 | case T_FLOAT: |
duke@435 | 2440 | h_k()->float_field_put(fd->offset(), fd->float_initial_value()); |
duke@435 | 2441 | break; |
duke@435 | 2442 | case T_DOUBLE: |
duke@435 | 2443 | h_k()->double_field_put(fd->offset(), fd->double_initial_value()); |
duke@435 | 2444 | break; |
duke@435 | 2445 | case T_LONG: |
duke@435 | 2446 | h_k()->long_field_put(fd->offset(), fd->long_initial_value()); |
duke@435 | 2447 | break; |
duke@435 | 2448 | case T_OBJECT: |
duke@435 | 2449 | { |
duke@435 | 2450 | #ifdef ASSERT |
duke@435 | 2451 | symbolOop sym = oopFactory::new_symbol("Ljava/lang/String;", CHECK); |
duke@435 | 2452 | assert(fd->signature() == sym, "just checking"); |
duke@435 | 2453 | #endif |
duke@435 | 2454 | oop string = fd->string_initial_value(CHECK); |
duke@435 | 2455 | h_k()->obj_field_put(fd->offset(), string); |
duke@435 | 2456 | } |
duke@435 | 2457 | break; |
duke@435 | 2458 | default: |
duke@435 | 2459 | THROW_MSG(vmSymbols::java_lang_ClassFormatError(), |
duke@435 | 2460 | "Illegal ConstantValue attribute in class file"); |
duke@435 | 2461 | } |
duke@435 | 2462 | } |
duke@435 | 2463 | } |
duke@435 | 2464 | |
duke@435 | 2465 | |
duke@435 | 2466 | void ClassFileParser::java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr, |
duke@435 | 2467 | constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS) { |
duke@435 | 2468 | // This code is for compatibility with earlier jdk's that do not |
duke@435 | 2469 | // have the "discovered" field in java.lang.ref.Reference. For 1.5 |
duke@435 | 2470 | // the check for the "discovered" field should issue a warning if |
duke@435 | 2471 | // the field is not found. For 1.6 this code should be issue a |
duke@435 | 2472 | // fatal error if the "discovered" field is not found. |
duke@435 | 2473 | // |
duke@435 | 2474 | // Increment fac.nonstatic_oop_count so that the start of the |
duke@435 | 2475 | // next type of non-static oops leaves room for the fake oop. |
duke@435 | 2476 | // Do not increment next_nonstatic_oop_offset so that the |
duke@435 | 2477 | // fake oop is place after the java.lang.ref.Reference oop |
duke@435 | 2478 | // fields. |
duke@435 | 2479 | // |
duke@435 | 2480 | // Check the fields in java.lang.ref.Reference for the "discovered" |
duke@435 | 2481 | // field. If it is not present, artifically create a field for it. |
duke@435 | 2482 | // This allows this VM to run on early JDK where the field is not |
duke@435 | 2483 | // present. |
duke@435 | 2484 | |
duke@435 | 2485 | // |
duke@435 | 2486 | // Increment fac.nonstatic_oop_count so that the start of the |
duke@435 | 2487 | // next type of non-static oops leaves room for the fake oop. |
duke@435 | 2488 | // Do not increment next_nonstatic_oop_offset so that the |
duke@435 | 2489 | // fake oop is place after the java.lang.ref.Reference oop |
duke@435 | 2490 | // fields. |
duke@435 | 2491 | // |
duke@435 | 2492 | // Check the fields in java.lang.ref.Reference for the "discovered" |
duke@435 | 2493 | // field. If it is not present, artifically create a field for it. |
duke@435 | 2494 | // This allows this VM to run on early JDK where the field is not |
duke@435 | 2495 | // present. |
duke@435 | 2496 | int reference_sig_index = 0; |
duke@435 | 2497 | int reference_name_index = 0; |
duke@435 | 2498 | int reference_index = 0; |
duke@435 | 2499 | int extra = java_lang_ref_Reference::number_of_fake_oop_fields; |
duke@435 | 2500 | const int n = (*fields_ptr)()->length(); |
duke@435 | 2501 | for (int i = 0; i < n; i += instanceKlass::next_offset ) { |
duke@435 | 2502 | int name_index = |
duke@435 | 2503 | (*fields_ptr)()->ushort_at(i + instanceKlass::name_index_offset); |
duke@435 | 2504 | int sig_index = |
duke@435 | 2505 | (*fields_ptr)()->ushort_at(i + instanceKlass::signature_index_offset); |
duke@435 | 2506 | symbolOop f_name = cp->symbol_at(name_index); |
duke@435 | 2507 | symbolOop f_sig = cp->symbol_at(sig_index); |
duke@435 | 2508 | if (f_sig == vmSymbols::reference_signature() && reference_index == 0) { |
duke@435 | 2509 | // Save the index for reference signature for later use. |
duke@435 | 2510 | // The fake discovered field does not entries in the |
duke@435 | 2511 | // constant pool so the index for its signature cannot |
duke@435 | 2512 | // be extracted from the constant pool. It will need |
duke@435 | 2513 | // later, however. It's signature is vmSymbols::reference_signature() |
duke@435 | 2514 | // so same an index for that signature. |
duke@435 | 2515 | reference_sig_index = sig_index; |
duke@435 | 2516 | reference_name_index = name_index; |
duke@435 | 2517 | reference_index = i; |
duke@435 | 2518 | } |
duke@435 | 2519 | if (f_name == vmSymbols::reference_discovered_name() && |
duke@435 | 2520 | f_sig == vmSymbols::reference_signature()) { |
duke@435 | 2521 | // The values below are fake but will force extra |
duke@435 | 2522 | // non-static oop fields and a corresponding non-static |
duke@435 | 2523 | // oop map block to be allocated. |
duke@435 | 2524 | extra = 0; |
duke@435 | 2525 | break; |
duke@435 | 2526 | } |
duke@435 | 2527 | } |
duke@435 | 2528 | if (extra != 0) { |
duke@435 | 2529 | fac_ptr->nonstatic_oop_count += extra; |
duke@435 | 2530 | // Add the additional entry to "fields" so that the klass |
duke@435 | 2531 | // contains the "discoverd" field and the field will be initialized |
duke@435 | 2532 | // in instances of the object. |
duke@435 | 2533 | int fields_with_fix_length = (*fields_ptr)()->length() + |
duke@435 | 2534 | instanceKlass::next_offset; |
duke@435 | 2535 | typeArrayOop ff = oopFactory::new_permanent_shortArray( |
duke@435 | 2536 | fields_with_fix_length, CHECK); |
duke@435 | 2537 | typeArrayHandle fields_with_fix(THREAD, ff); |
duke@435 | 2538 | |
duke@435 | 2539 | // Take everything from the original but the length. |
duke@435 | 2540 | for (int idx = 0; idx < (*fields_ptr)->length(); idx++) { |
duke@435 | 2541 | fields_with_fix->ushort_at_put(idx, (*fields_ptr)->ushort_at(idx)); |
duke@435 | 2542 | } |
duke@435 | 2543 | |
duke@435 | 2544 | // Add the fake field at the end. |
duke@435 | 2545 | int i = (*fields_ptr)->length(); |
duke@435 | 2546 | // There is no name index for the fake "discovered" field nor |
duke@435 | 2547 | // signature but a signature is needed so that the field will |
duke@435 | 2548 | // be properly initialized. Use one found for |
duke@435 | 2549 | // one of the other reference fields. Be sure the index for the |
duke@435 | 2550 | // name is 0. In fieldDescriptor::initialize() the index of the |
duke@435 | 2551 | // name is checked. That check is by passed for the last nonstatic |
duke@435 | 2552 | // oop field in a java.lang.ref.Reference which is assumed to be |
duke@435 | 2553 | // this artificial "discovered" field. An assertion checks that |
duke@435 | 2554 | // the name index is 0. |
duke@435 | 2555 | assert(reference_index != 0, "Missing signature for reference"); |
duke@435 | 2556 | |
duke@435 | 2557 | int j; |
duke@435 | 2558 | for (j = 0; j < instanceKlass::next_offset; j++) { |
duke@435 | 2559 | fields_with_fix->ushort_at_put(i + j, |
duke@435 | 2560 | (*fields_ptr)->ushort_at(reference_index +j)); |
duke@435 | 2561 | } |
duke@435 | 2562 | // Clear the public access flag and set the private access flag. |
duke@435 | 2563 | short flags; |
duke@435 | 2564 | flags = |
duke@435 | 2565 | fields_with_fix->ushort_at(i + instanceKlass::access_flags_offset); |
duke@435 | 2566 | assert(!(flags & JVM_RECOGNIZED_FIELD_MODIFIERS), "Unexpected access flags set"); |
duke@435 | 2567 | flags = flags & (~JVM_ACC_PUBLIC); |
duke@435 | 2568 | flags = flags | JVM_ACC_PRIVATE; |
duke@435 | 2569 | AccessFlags access_flags; |
duke@435 | 2570 | access_flags.set_flags(flags); |
duke@435 | 2571 | assert(!access_flags.is_public(), "Failed to clear public flag"); |
duke@435 | 2572 | assert(access_flags.is_private(), "Failed to set private flag"); |
duke@435 | 2573 | fields_with_fix->ushort_at_put(i + instanceKlass::access_flags_offset, |
duke@435 | 2574 | flags); |
duke@435 | 2575 | |
duke@435 | 2576 | assert(fields_with_fix->ushort_at(i + instanceKlass::name_index_offset) |
duke@435 | 2577 | == reference_name_index, "The fake reference name is incorrect"); |
duke@435 | 2578 | assert(fields_with_fix->ushort_at(i + instanceKlass::signature_index_offset) |
duke@435 | 2579 | == reference_sig_index, "The fake reference signature is incorrect"); |
duke@435 | 2580 | // The type of the field is stored in the low_offset entry during |
duke@435 | 2581 | // parsing. |
duke@435 | 2582 | assert(fields_with_fix->ushort_at(i + instanceKlass::low_offset) == |
duke@435 | 2583 | NONSTATIC_OOP, "The fake reference type is incorrect"); |
duke@435 | 2584 | |
duke@435 | 2585 | // "fields" is allocated in the permanent generation. Disgard |
duke@435 | 2586 | // it and let it be collected. |
duke@435 | 2587 | (*fields_ptr) = fields_with_fix; |
duke@435 | 2588 | } |
duke@435 | 2589 | return; |
duke@435 | 2590 | } |
duke@435 | 2591 | |
duke@435 | 2592 | |
duke@435 | 2593 | void ClassFileParser::java_lang_Class_fix_pre(objArrayHandle* methods_ptr, |
duke@435 | 2594 | FieldAllocationCount *fac_ptr, TRAPS) { |
duke@435 | 2595 | // Add fake fields for java.lang.Class instances |
duke@435 | 2596 | // |
duke@435 | 2597 | // This is not particularly nice. We should consider adding a |
duke@435 | 2598 | // private transient object field at the Java level to |
duke@435 | 2599 | // java.lang.Class. Alternatively we could add a subclass of |
duke@435 | 2600 | // instanceKlass which provides an accessor and size computer for |
duke@435 | 2601 | // this field, but that appears to be more code than this hack. |
duke@435 | 2602 | // |
duke@435 | 2603 | // NOTE that we wedge these in at the beginning rather than the |
duke@435 | 2604 | // end of the object because the Class layout changed between JDK |
duke@435 | 2605 | // 1.3 and JDK 1.4 with the new reflection implementation; some |
duke@435 | 2606 | // nonstatic oop fields were added at the Java level. The offsets |
duke@435 | 2607 | // of these fake fields can't change between these two JDK |
duke@435 | 2608 | // versions because when the offsets are computed at bootstrap |
duke@435 | 2609 | // time we don't know yet which version of the JDK we're running in. |
duke@435 | 2610 | |
duke@435 | 2611 | // The values below are fake but will force two non-static oop fields and |
duke@435 | 2612 | // a corresponding non-static oop map block to be allocated. |
duke@435 | 2613 | const int extra = java_lang_Class::number_of_fake_oop_fields; |
duke@435 | 2614 | fac_ptr->nonstatic_oop_count += extra; |
duke@435 | 2615 | } |
duke@435 | 2616 | |
duke@435 | 2617 | |
duke@435 | 2618 | void ClassFileParser::java_lang_Class_fix_post(int* next_nonstatic_oop_offset_ptr) { |
duke@435 | 2619 | // Cause the extra fake fields in java.lang.Class to show up before |
duke@435 | 2620 | // the Java fields for layout compatibility between 1.3 and 1.4 |
duke@435 | 2621 | // Incrementing next_nonstatic_oop_offset here advances the |
duke@435 | 2622 | // location where the real java fields are placed. |
duke@435 | 2623 | const int extra = java_lang_Class::number_of_fake_oop_fields; |
coleenp@548 | 2624 | (*next_nonstatic_oop_offset_ptr) += (extra * heapOopSize); |
duke@435 | 2625 | } |
duke@435 | 2626 | |
duke@435 | 2627 | |
jrose@1145 | 2628 | // Force MethodHandle.vmentry to be an unmanaged pointer. |
jrose@1145 | 2629 | // There is no way for a classfile to express this, so we must help it. |
jrose@1145 | 2630 | void ClassFileParser::java_dyn_MethodHandle_fix_pre(constantPoolHandle cp, |
jrose@1145 | 2631 | typeArrayHandle* fields_ptr, |
jrose@1145 | 2632 | FieldAllocationCount *fac_ptr, |
jrose@1145 | 2633 | TRAPS) { |
jrose@1145 | 2634 | // Add fake fields for java.dyn.MethodHandle instances |
jrose@1145 | 2635 | // |
jrose@1145 | 2636 | // This is not particularly nice, but since there is no way to express |
jrose@1145 | 2637 | // a native wordSize field in Java, we must do it at this level. |
jrose@1145 | 2638 | |
jrose@1145 | 2639 | if (!EnableMethodHandles) return; |
jrose@1145 | 2640 | |
jrose@1145 | 2641 | int word_sig_index = 0; |
jrose@1145 | 2642 | const int cp_size = cp->length(); |
jrose@1145 | 2643 | for (int index = 1; index < cp_size; index++) { |
jrose@1145 | 2644 | if (cp->tag_at(index).is_utf8() && |
jrose@1145 | 2645 | cp->symbol_at(index) == vmSymbols::machine_word_signature()) { |
jrose@1145 | 2646 | word_sig_index = index; |
jrose@1145 | 2647 | break; |
jrose@1145 | 2648 | } |
jrose@1145 | 2649 | } |
jrose@1145 | 2650 | |
jrose@1145 | 2651 | if (word_sig_index == 0) |
jrose@1145 | 2652 | THROW_MSG(vmSymbols::java_lang_VirtualMachineError(), |
jrose@1145 | 2653 | "missing I or J signature (for vmentry) in java.dyn.MethodHandle"); |
jrose@1145 | 2654 | |
jrose@1145 | 2655 | bool found_vmentry = false; |
jrose@1145 | 2656 | |
jrose@1145 | 2657 | const int n = (*fields_ptr)()->length(); |
jrose@1145 | 2658 | for (int i = 0; i < n; i += instanceKlass::next_offset) { |
jrose@1145 | 2659 | int name_index = (*fields_ptr)->ushort_at(i + instanceKlass::name_index_offset); |
jrose@1145 | 2660 | int sig_index = (*fields_ptr)->ushort_at(i + instanceKlass::signature_index_offset); |
jrose@1145 | 2661 | int acc_flags = (*fields_ptr)->ushort_at(i + instanceKlass::access_flags_offset); |
jrose@1145 | 2662 | symbolOop f_name = cp->symbol_at(name_index); |
jrose@1145 | 2663 | symbolOop f_sig = cp->symbol_at(sig_index); |
jrose@1145 | 2664 | if (f_sig == vmSymbols::byte_signature() && |
jrose@1145 | 2665 | f_name == vmSymbols::vmentry_name() && |
jrose@1145 | 2666 | (acc_flags & JVM_ACC_STATIC) == 0) { |
jrose@1145 | 2667 | // Adjust the field type from byte to an unmanaged pointer. |
jrose@1145 | 2668 | assert(fac_ptr->nonstatic_byte_count > 0, ""); |
jrose@1145 | 2669 | fac_ptr->nonstatic_byte_count -= 1; |
jrose@1145 | 2670 | (*fields_ptr)->ushort_at_put(i + instanceKlass::signature_index_offset, |
jrose@1145 | 2671 | word_sig_index); |
twisti@1543 | 2672 | fac_ptr->nonstatic_word_count += 1; |
twisti@1543 | 2673 | |
twisti@1543 | 2674 | FieldAllocationType atype = (FieldAllocationType) (*fields_ptr)->ushort_at(i + instanceKlass::low_offset); |
jrose@1145 | 2675 | assert(atype == NONSTATIC_BYTE, ""); |
jrose@1145 | 2676 | FieldAllocationType new_atype = NONSTATIC_WORD; |
twisti@1543 | 2677 | (*fields_ptr)->ushort_at_put(i + instanceKlass::low_offset, new_atype); |
jrose@1145 | 2678 | |
jrose@1145 | 2679 | found_vmentry = true; |
jrose@1145 | 2680 | break; |
jrose@1145 | 2681 | } |
jrose@1145 | 2682 | } |
jrose@1145 | 2683 | |
jrose@1145 | 2684 | if (!found_vmentry) |
jrose@1145 | 2685 | THROW_MSG(vmSymbols::java_lang_VirtualMachineError(), |
jrose@1145 | 2686 | "missing vmentry byte field in java.dyn.MethodHandle"); |
jrose@1145 | 2687 | |
jrose@1145 | 2688 | } |
jrose@1145 | 2689 | |
jrose@1145 | 2690 | |
duke@435 | 2691 | instanceKlassHandle ClassFileParser::parseClassFile(symbolHandle name, |
duke@435 | 2692 | Handle class_loader, |
duke@435 | 2693 | Handle protection_domain, |
jrose@1145 | 2694 | KlassHandle host_klass, |
jrose@866 | 2695 | GrowableArray<Handle>* cp_patches, |
duke@435 | 2696 | symbolHandle& parsed_name, |
acorn@1408 | 2697 | bool verify, |
duke@435 | 2698 | TRAPS) { |
duke@435 | 2699 | // So that JVMTI can cache class file in the state before retransformable agents |
duke@435 | 2700 | // have modified it |
duke@435 | 2701 | unsigned char *cached_class_file_bytes = NULL; |
duke@435 | 2702 | jint cached_class_file_length; |
duke@435 | 2703 | |
duke@435 | 2704 | ClassFileStream* cfs = stream(); |
duke@435 | 2705 | // Timing |
mchung@1310 | 2706 | assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
mchung@1310 | 2707 | JavaThread* jt = (JavaThread*) THREAD; |
mchung@1310 | 2708 | |
mchung@1310 | 2709 | PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
mchung@1310 | 2710 | ClassLoader::perf_class_parse_selftime(), |
mchung@1310 | 2711 | NULL, |
mchung@1310 | 2712 | jt->get_thread_stat()->perf_recursion_counts_addr(), |
mchung@1310 | 2713 | jt->get_thread_stat()->perf_timers_addr(), |
mchung@1310 | 2714 | PerfClassTraceTime::PARSE_CLASS); |
duke@435 | 2715 | |
duke@435 | 2716 | _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; |
duke@435 | 2717 | |
duke@435 | 2718 | if (JvmtiExport::should_post_class_file_load_hook()) { |
duke@435 | 2719 | unsigned char* ptr = cfs->buffer(); |
duke@435 | 2720 | unsigned char* end_ptr = cfs->buffer() + cfs->length(); |
duke@435 | 2721 | |
duke@435 | 2722 | JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain, |
duke@435 | 2723 | &ptr, &end_ptr, |
duke@435 | 2724 | &cached_class_file_bytes, |
duke@435 | 2725 | &cached_class_file_length); |
duke@435 | 2726 | |
duke@435 | 2727 | if (ptr != cfs->buffer()) { |
duke@435 | 2728 | // JVMTI agent has modified class file data. |
duke@435 | 2729 | // Set new class file stream using JVMTI agent modified |
duke@435 | 2730 | // class file data. |
duke@435 | 2731 | cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); |
duke@435 | 2732 | set_stream(cfs); |
duke@435 | 2733 | } |
duke@435 | 2734 | } |
duke@435 | 2735 | |
jrose@1145 | 2736 | _host_klass = host_klass; |
jrose@866 | 2737 | _cp_patches = cp_patches; |
duke@435 | 2738 | |
duke@435 | 2739 | instanceKlassHandle nullHandle; |
duke@435 | 2740 | |
duke@435 | 2741 | // Figure out whether we can skip format checking (matching classic VM behavior) |
acorn@1408 | 2742 | _need_verify = Verifier::should_verify_for(class_loader(), verify); |
duke@435 | 2743 | |
duke@435 | 2744 | // Set the verify flag in stream |
duke@435 | 2745 | cfs->set_verify(_need_verify); |
duke@435 | 2746 | |
duke@435 | 2747 | // Save the class file name for easier error message printing. |
duke@435 | 2748 | _class_name = name.not_null()? name : vmSymbolHandles::unknown_class_name(); |
duke@435 | 2749 | |
duke@435 | 2750 | cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor |
duke@435 | 2751 | // Magic value |
duke@435 | 2752 | u4 magic = cfs->get_u4_fast(); |
duke@435 | 2753 | guarantee_property(magic == JAVA_CLASSFILE_MAGIC, |
duke@435 | 2754 | "Incompatible magic value %u in class file %s", |
duke@435 | 2755 | magic, CHECK_(nullHandle)); |
duke@435 | 2756 | |
duke@435 | 2757 | // Version numbers |
duke@435 | 2758 | u2 minor_version = cfs->get_u2_fast(); |
duke@435 | 2759 | u2 major_version = cfs->get_u2_fast(); |
duke@435 | 2760 | |
duke@435 | 2761 | // Check version numbers - we check this even with verifier off |
duke@435 | 2762 | if (!is_supported_version(major_version, minor_version)) { |
duke@435 | 2763 | if (name.is_null()) { |
duke@435 | 2764 | Exceptions::fthrow( |
duke@435 | 2765 | THREAD_AND_LOCATION, |
duke@435 | 2766 | vmSymbolHandles::java_lang_UnsupportedClassVersionError(), |
duke@435 | 2767 | "Unsupported major.minor version %u.%u", |
duke@435 | 2768 | major_version, |
duke@435 | 2769 | minor_version); |
duke@435 | 2770 | } else { |
duke@435 | 2771 | ResourceMark rm(THREAD); |
duke@435 | 2772 | Exceptions::fthrow( |
duke@435 | 2773 | THREAD_AND_LOCATION, |
duke@435 | 2774 | vmSymbolHandles::java_lang_UnsupportedClassVersionError(), |
duke@435 | 2775 | "%s : Unsupported major.minor version %u.%u", |
duke@435 | 2776 | name->as_C_string(), |
duke@435 | 2777 | major_version, |
duke@435 | 2778 | minor_version); |
duke@435 | 2779 | } |
duke@435 | 2780 | return nullHandle; |
duke@435 | 2781 | } |
duke@435 | 2782 | |
duke@435 | 2783 | _major_version = major_version; |
duke@435 | 2784 | _minor_version = minor_version; |
duke@435 | 2785 | |
duke@435 | 2786 | |
duke@435 | 2787 | // Check if verification needs to be relaxed for this class file |
duke@435 | 2788 | // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) |
duke@435 | 2789 | _relax_verify = Verifier::relax_verify_for(class_loader()); |
duke@435 | 2790 | |
duke@435 | 2791 | // Constant pool |
duke@435 | 2792 | constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle)); |
duke@435 | 2793 | int cp_size = cp->length(); |
duke@435 | 2794 | |
duke@435 | 2795 | cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
duke@435 | 2796 | |
duke@435 | 2797 | // Access flags |
duke@435 | 2798 | AccessFlags access_flags; |
duke@435 | 2799 | jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; |
duke@435 | 2800 | |
duke@435 | 2801 | if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { |
duke@435 | 2802 | // Set abstract bit for old class files for backward compatibility |
duke@435 | 2803 | flags |= JVM_ACC_ABSTRACT; |
duke@435 | 2804 | } |
duke@435 | 2805 | verify_legal_class_modifiers(flags, CHECK_(nullHandle)); |
duke@435 | 2806 | access_flags.set_flags(flags); |
duke@435 | 2807 | |
duke@435 | 2808 | // This class and superclass |
duke@435 | 2809 | instanceKlassHandle super_klass; |
duke@435 | 2810 | u2 this_class_index = cfs->get_u2_fast(); |
duke@435 | 2811 | check_property( |
duke@435 | 2812 | valid_cp_range(this_class_index, cp_size) && |
duke@435 | 2813 | cp->tag_at(this_class_index).is_unresolved_klass(), |
duke@435 | 2814 | "Invalid this class index %u in constant pool in class file %s", |
duke@435 | 2815 | this_class_index, CHECK_(nullHandle)); |
duke@435 | 2816 | |
duke@435 | 2817 | symbolHandle class_name (THREAD, cp->unresolved_klass_at(this_class_index)); |
duke@435 | 2818 | assert(class_name.not_null(), "class_name can't be null"); |
duke@435 | 2819 | |
duke@435 | 2820 | // It's important to set parsed_name *before* resolving the super class. |
duke@435 | 2821 | // (it's used for cleanup by the caller if parsing fails) |
duke@435 | 2822 | parsed_name = class_name; |
duke@435 | 2823 | |
duke@435 | 2824 | // Update _class_name which could be null previously to be class_name |
duke@435 | 2825 | _class_name = class_name; |
duke@435 | 2826 | |
duke@435 | 2827 | // Don't need to check whether this class name is legal or not. |
duke@435 | 2828 | // It has been checked when constant pool is parsed. |
duke@435 | 2829 | // However, make sure it is not an array type. |
duke@435 | 2830 | if (_need_verify) { |
duke@435 | 2831 | guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, |
duke@435 | 2832 | "Bad class name in class file %s", |
duke@435 | 2833 | CHECK_(nullHandle)); |
duke@435 | 2834 | } |
duke@435 | 2835 | |
duke@435 | 2836 | klassOop preserve_this_klass; // for storing result across HandleMark |
duke@435 | 2837 | |
duke@435 | 2838 | // release all handles when parsing is done |
duke@435 | 2839 | { HandleMark hm(THREAD); |
duke@435 | 2840 | |
duke@435 | 2841 | // Checks if name in class file matches requested name |
duke@435 | 2842 | if (name.not_null() && class_name() != name()) { |
duke@435 | 2843 | ResourceMark rm(THREAD); |
duke@435 | 2844 | Exceptions::fthrow( |
duke@435 | 2845 | THREAD_AND_LOCATION, |
duke@435 | 2846 | vmSymbolHandles::java_lang_NoClassDefFoundError(), |
duke@435 | 2847 | "%s (wrong name: %s)", |
duke@435 | 2848 | name->as_C_string(), |
duke@435 | 2849 | class_name->as_C_string() |
duke@435 | 2850 | ); |
duke@435 | 2851 | return nullHandle; |
duke@435 | 2852 | } |
duke@435 | 2853 | |
duke@435 | 2854 | if (TraceClassLoadingPreorder) { |
duke@435 | 2855 | tty->print("[Loading %s", name()->as_klass_external_name()); |
duke@435 | 2856 | if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
duke@435 | 2857 | tty->print_cr("]"); |
duke@435 | 2858 | } |
duke@435 | 2859 | |
duke@435 | 2860 | u2 super_class_index = cfs->get_u2_fast(); |
duke@435 | 2861 | if (super_class_index == 0) { |
duke@435 | 2862 | check_property(class_name() == vmSymbols::java_lang_Object(), |
duke@435 | 2863 | "Invalid superclass index %u in class file %s", |
duke@435 | 2864 | super_class_index, |
duke@435 | 2865 | CHECK_(nullHandle)); |
duke@435 | 2866 | } else { |
duke@435 | 2867 | check_property(valid_cp_range(super_class_index, cp_size) && |
jrose@866 | 2868 | is_klass_reference(cp, super_class_index), |
duke@435 | 2869 | "Invalid superclass index %u in class file %s", |
duke@435 | 2870 | super_class_index, |
duke@435 | 2871 | CHECK_(nullHandle)); |
duke@435 | 2872 | // The class name should be legal because it is checked when parsing constant pool. |
duke@435 | 2873 | // However, make sure it is not an array type. |
jrose@866 | 2874 | bool is_array = false; |
jrose@866 | 2875 | if (cp->tag_at(super_class_index).is_klass()) { |
jrose@866 | 2876 | super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
jrose@866 | 2877 | if (_need_verify) |
jrose@866 | 2878 | is_array = super_klass->oop_is_array(); |
jrose@866 | 2879 | } else if (_need_verify) { |
jrose@866 | 2880 | is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
jrose@866 | 2881 | } |
duke@435 | 2882 | if (_need_verify) { |
jrose@866 | 2883 | guarantee_property(!is_array, |
duke@435 | 2884 | "Bad superclass name in class file %s", CHECK_(nullHandle)); |
duke@435 | 2885 | } |
duke@435 | 2886 | } |
duke@435 | 2887 | |
duke@435 | 2888 | // Interfaces |
duke@435 | 2889 | u2 itfs_len = cfs->get_u2_fast(); |
duke@435 | 2890 | objArrayHandle local_interfaces; |
duke@435 | 2891 | if (itfs_len == 0) { |
duke@435 | 2892 | local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); |
duke@435 | 2893 | } else { |
mchung@1310 | 2894 | local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, _class_name, CHECK_(nullHandle)); |
duke@435 | 2895 | } |
duke@435 | 2896 | |
duke@435 | 2897 | // Fields (offsets are filled in later) |
duke@435 | 2898 | struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0}; |
duke@435 | 2899 | objArrayHandle fields_annotations; |
duke@435 | 2900 | typeArrayHandle fields = parse_fields(cp, access_flags.is_interface(), &fac, &fields_annotations, CHECK_(nullHandle)); |
duke@435 | 2901 | // Methods |
duke@435 | 2902 | bool has_final_method = false; |
duke@435 | 2903 | AccessFlags promoted_flags; |
duke@435 | 2904 | promoted_flags.set_flags(0); |
duke@435 | 2905 | // These need to be oop pointers because they are allocated lazily |
duke@435 | 2906 | // inside parse_methods inside a nested HandleMark |
duke@435 | 2907 | objArrayOop methods_annotations_oop = NULL; |
duke@435 | 2908 | objArrayOop methods_parameter_annotations_oop = NULL; |
duke@435 | 2909 | objArrayOop methods_default_annotations_oop = NULL; |
duke@435 | 2910 | objArrayHandle methods = parse_methods(cp, access_flags.is_interface(), |
duke@435 | 2911 | &promoted_flags, |
duke@435 | 2912 | &has_final_method, |
duke@435 | 2913 | &methods_annotations_oop, |
duke@435 | 2914 | &methods_parameter_annotations_oop, |
duke@435 | 2915 | &methods_default_annotations_oop, |
duke@435 | 2916 | CHECK_(nullHandle)); |
duke@435 | 2917 | |
duke@435 | 2918 | objArrayHandle methods_annotations(THREAD, methods_annotations_oop); |
duke@435 | 2919 | objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop); |
duke@435 | 2920 | objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop); |
duke@435 | 2921 | |
duke@435 | 2922 | // We check super class after class file is parsed and format is checked |
jrose@866 | 2923 | if (super_class_index > 0 && super_klass.is_null()) { |
duke@435 | 2924 | symbolHandle sk (THREAD, cp->klass_name_at(super_class_index)); |
duke@435 | 2925 | if (access_flags.is_interface()) { |
duke@435 | 2926 | // Before attempting to resolve the superclass, check for class format |
duke@435 | 2927 | // errors not checked yet. |
duke@435 | 2928 | guarantee_property(sk() == vmSymbols::java_lang_Object(), |
duke@435 | 2929 | "Interfaces must have java.lang.Object as superclass in class file %s", |
duke@435 | 2930 | CHECK_(nullHandle)); |
duke@435 | 2931 | } |
duke@435 | 2932 | klassOop k = SystemDictionary::resolve_super_or_fail(class_name, |
duke@435 | 2933 | sk, |
duke@435 | 2934 | class_loader, |
duke@435 | 2935 | protection_domain, |
duke@435 | 2936 | true, |
duke@435 | 2937 | CHECK_(nullHandle)); |
mchung@1310 | 2938 | |
duke@435 | 2939 | KlassHandle kh (THREAD, k); |
duke@435 | 2940 | super_klass = instanceKlassHandle(THREAD, kh()); |
jrose@909 | 2941 | if (LinkWellKnownClasses) // my super class is well known to me |
jrose@909 | 2942 | cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve |
jrose@866 | 2943 | } |
jrose@866 | 2944 | if (super_klass.not_null()) { |
duke@435 | 2945 | if (super_klass->is_interface()) { |
duke@435 | 2946 | ResourceMark rm(THREAD); |
duke@435 | 2947 | Exceptions::fthrow( |
duke@435 | 2948 | THREAD_AND_LOCATION, |
duke@435 | 2949 | vmSymbolHandles::java_lang_IncompatibleClassChangeError(), |
duke@435 | 2950 | "class %s has interface %s as super class", |
duke@435 | 2951 | class_name->as_klass_external_name(), |
duke@435 | 2952 | super_klass->external_name() |
duke@435 | 2953 | ); |
duke@435 | 2954 | return nullHandle; |
duke@435 | 2955 | } |
duke@435 | 2956 | // Make sure super class is not final |
duke@435 | 2957 | if (super_klass->is_final()) { |
duke@435 | 2958 | THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); |
duke@435 | 2959 | } |
duke@435 | 2960 | } |
duke@435 | 2961 | |
duke@435 | 2962 | // Compute the transitive list of all unique interfaces implemented by this class |
duke@435 | 2963 | objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); |
duke@435 | 2964 | |
duke@435 | 2965 | // sort methods |
duke@435 | 2966 | typeArrayHandle method_ordering = sort_methods(methods, |
duke@435 | 2967 | methods_annotations, |
duke@435 | 2968 | methods_parameter_annotations, |
duke@435 | 2969 | methods_default_annotations, |
duke@435 | 2970 | CHECK_(nullHandle)); |
duke@435 | 2971 | |
duke@435 | 2972 | // promote flags from parse_methods() to the klass' flags |
duke@435 | 2973 | access_flags.add_promoted_flags(promoted_flags.as_int()); |
duke@435 | 2974 | |
duke@435 | 2975 | // Size of Java vtable (in words) |
duke@435 | 2976 | int vtable_size = 0; |
duke@435 | 2977 | int itable_size = 0; |
duke@435 | 2978 | int num_miranda_methods = 0; |
duke@435 | 2979 | |
duke@435 | 2980 | klassVtable::compute_vtable_size_and_num_mirandas(vtable_size, |
duke@435 | 2981 | num_miranda_methods, |
duke@435 | 2982 | super_klass(), |
duke@435 | 2983 | methods(), |
duke@435 | 2984 | access_flags, |
acorn@1087 | 2985 | class_loader, |
acorn@1087 | 2986 | class_name, |
acorn@1087 | 2987 | local_interfaces(), |
acorn@1087 | 2988 | CHECK_(nullHandle)); |
duke@435 | 2989 | |
duke@435 | 2990 | // Size of Java itable (in words) |
duke@435 | 2991 | itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); |
duke@435 | 2992 | |
duke@435 | 2993 | // Field size and offset computation |
duke@435 | 2994 | int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); |
duke@435 | 2995 | #ifndef PRODUCT |
duke@435 | 2996 | int orig_nonstatic_field_size = 0; |
duke@435 | 2997 | #endif |
duke@435 | 2998 | int static_field_size = 0; |
duke@435 | 2999 | int next_static_oop_offset; |
duke@435 | 3000 | int next_static_double_offset; |
duke@435 | 3001 | int next_static_word_offset; |
duke@435 | 3002 | int next_static_short_offset; |
duke@435 | 3003 | int next_static_byte_offset; |
duke@435 | 3004 | int next_static_type_offset; |
duke@435 | 3005 | int next_nonstatic_oop_offset; |
duke@435 | 3006 | int next_nonstatic_double_offset; |
duke@435 | 3007 | int next_nonstatic_word_offset; |
duke@435 | 3008 | int next_nonstatic_short_offset; |
duke@435 | 3009 | int next_nonstatic_byte_offset; |
duke@435 | 3010 | int next_nonstatic_type_offset; |
duke@435 | 3011 | int first_nonstatic_oop_offset; |
duke@435 | 3012 | int first_nonstatic_field_offset; |
duke@435 | 3013 | int next_nonstatic_field_offset; |
duke@435 | 3014 | |
duke@435 | 3015 | // Calculate the starting byte offsets |
duke@435 | 3016 | next_static_oop_offset = (instanceKlass::header_size() + |
duke@435 | 3017 | align_object_offset(vtable_size) + |
duke@435 | 3018 | align_object_offset(itable_size)) * wordSize; |
duke@435 | 3019 | next_static_double_offset = next_static_oop_offset + |
coleenp@548 | 3020 | (fac.static_oop_count * heapOopSize); |
duke@435 | 3021 | if ( fac.static_double_count && |
duke@435 | 3022 | (Universe::field_type_should_be_aligned(T_DOUBLE) || |
duke@435 | 3023 | Universe::field_type_should_be_aligned(T_LONG)) ) { |
duke@435 | 3024 | next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); |
duke@435 | 3025 | } |
duke@435 | 3026 | |
duke@435 | 3027 | next_static_word_offset = next_static_double_offset + |
duke@435 | 3028 | (fac.static_double_count * BytesPerLong); |
duke@435 | 3029 | next_static_short_offset = next_static_word_offset + |
duke@435 | 3030 | (fac.static_word_count * BytesPerInt); |
duke@435 | 3031 | next_static_byte_offset = next_static_short_offset + |
duke@435 | 3032 | (fac.static_short_count * BytesPerShort); |
duke@435 | 3033 | next_static_type_offset = align_size_up((next_static_byte_offset + |
duke@435 | 3034 | fac.static_byte_count ), wordSize ); |
duke@435 | 3035 | static_field_size = (next_static_type_offset - |
duke@435 | 3036 | next_static_oop_offset) / wordSize; |
kvn@600 | 3037 | first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
kvn@600 | 3038 | nonstatic_field_size * heapOopSize; |
duke@435 | 3039 | next_nonstatic_field_offset = first_nonstatic_field_offset; |
duke@435 | 3040 | |
duke@435 | 3041 | // Add fake fields for java.lang.Class instances (also see below) |
duke@435 | 3042 | if (class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) { |
duke@435 | 3043 | java_lang_Class_fix_pre(&methods, &fac, CHECK_(nullHandle)); |
duke@435 | 3044 | } |
duke@435 | 3045 | |
jrose@1145 | 3046 | // adjust the vmentry field declaration in java.dyn.MethodHandle |
jrose@1145 | 3047 | if (EnableMethodHandles && class_name() == vmSymbols::sun_dyn_MethodHandleImpl() && class_loader.is_null()) { |
jrose@1145 | 3048 | java_dyn_MethodHandle_fix_pre(cp, &fields, &fac, CHECK_(nullHandle)); |
jrose@1145 | 3049 | } |
jrose@1145 | 3050 | |
duke@435 | 3051 | // Add a fake "discovered" field if it is not present |
duke@435 | 3052 | // for compatibility with earlier jdk's. |
duke@435 | 3053 | if (class_name() == vmSymbols::java_lang_ref_Reference() |
duke@435 | 3054 | && class_loader.is_null()) { |
duke@435 | 3055 | java_lang_ref_Reference_fix_pre(&fields, cp, &fac, CHECK_(nullHandle)); |
duke@435 | 3056 | } |
duke@435 | 3057 | // end of "discovered" field compactibility fix |
duke@435 | 3058 | |
jcoomes@1374 | 3059 | unsigned int nonstatic_double_count = fac.nonstatic_double_count; |
jcoomes@1374 | 3060 | unsigned int nonstatic_word_count = fac.nonstatic_word_count; |
jcoomes@1374 | 3061 | unsigned int nonstatic_short_count = fac.nonstatic_short_count; |
jcoomes@1374 | 3062 | unsigned int nonstatic_byte_count = fac.nonstatic_byte_count; |
jcoomes@1374 | 3063 | unsigned int nonstatic_oop_count = fac.nonstatic_oop_count; |
duke@435 | 3064 | |
coleenp@548 | 3065 | bool super_has_nonstatic_fields = |
coleenp@548 | 3066 | (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
coleenp@548 | 3067 | bool has_nonstatic_fields = super_has_nonstatic_fields || |
coleenp@548 | 3068 | ((nonstatic_double_count + nonstatic_word_count + |
coleenp@548 | 3069 | nonstatic_short_count + nonstatic_byte_count + |
coleenp@548 | 3070 | nonstatic_oop_count) != 0); |
coleenp@548 | 3071 | |
coleenp@548 | 3072 | |
jcoomes@1374 | 3073 | // Prepare list of oops for oop map generation. |
jcoomes@1374 | 3074 | int* nonstatic_oop_offsets; |
jcoomes@1374 | 3075 | unsigned int* nonstatic_oop_counts; |
jcoomes@1374 | 3076 | unsigned int nonstatic_oop_map_count = 0; |
duke@435 | 3077 | |
duke@435 | 3078 | nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( |
jcoomes@1374 | 3079 | THREAD, int, nonstatic_oop_count + 1); |
jcoomes@1373 | 3080 | nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
jcoomes@1374 | 3081 | THREAD, unsigned int, nonstatic_oop_count + 1); |
duke@435 | 3082 | |
duke@435 | 3083 | // Add fake fields for java.lang.Class instances (also see above). |
duke@435 | 3084 | // FieldsAllocationStyle and CompactFields values will be reset to default. |
duke@435 | 3085 | if(class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) { |
duke@435 | 3086 | java_lang_Class_fix_post(&next_nonstatic_field_offset); |
jcoomes@1374 | 3087 | nonstatic_oop_offsets[0] = first_nonstatic_field_offset; |
jcoomes@1374 | 3088 | const uint fake_oop_count = (next_nonstatic_field_offset - |
jcoomes@1374 | 3089 | first_nonstatic_field_offset) / heapOopSize; |
jcoomes@1374 | 3090 | nonstatic_oop_counts[0] = fake_oop_count; |
jcoomes@1374 | 3091 | nonstatic_oop_map_count = 1; |
jcoomes@1374 | 3092 | nonstatic_oop_count -= fake_oop_count; |
duke@435 | 3093 | first_nonstatic_oop_offset = first_nonstatic_field_offset; |
duke@435 | 3094 | } else { |
duke@435 | 3095 | first_nonstatic_oop_offset = 0; // will be set for first oop field |
duke@435 | 3096 | } |
duke@435 | 3097 | |
duke@435 | 3098 | #ifndef PRODUCT |
duke@435 | 3099 | if( PrintCompactFieldsSavings ) { |
duke@435 | 3100 | next_nonstatic_double_offset = next_nonstatic_field_offset + |
coleenp@548 | 3101 | (nonstatic_oop_count * heapOopSize); |
duke@435 | 3102 | if ( nonstatic_double_count > 0 ) { |
duke@435 | 3103 | next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); |
duke@435 | 3104 | } |
duke@435 | 3105 | next_nonstatic_word_offset = next_nonstatic_double_offset + |
duke@435 | 3106 | (nonstatic_double_count * BytesPerLong); |
duke@435 | 3107 | next_nonstatic_short_offset = next_nonstatic_word_offset + |
duke@435 | 3108 | (nonstatic_word_count * BytesPerInt); |
duke@435 | 3109 | next_nonstatic_byte_offset = next_nonstatic_short_offset + |
duke@435 | 3110 | (nonstatic_short_count * BytesPerShort); |
duke@435 | 3111 | next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + |
kvn@600 | 3112 | nonstatic_byte_count ), heapOopSize ); |
duke@435 | 3113 | orig_nonstatic_field_size = nonstatic_field_size + |
kvn@600 | 3114 | ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
duke@435 | 3115 | } |
duke@435 | 3116 | #endif |
duke@435 | 3117 | bool compact_fields = CompactFields; |
duke@435 | 3118 | int allocation_style = FieldsAllocationStyle; |
kvn@1801 | 3119 | if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
kvn@1801 | 3120 | assert(false, "0 <= FieldsAllocationStyle <= 2"); |
duke@435 | 3121 | allocation_style = 1; // Optimistic |
duke@435 | 3122 | } |
duke@435 | 3123 | |
duke@435 | 3124 | // The next classes have predefined hard-coded fields offsets |
duke@435 | 3125 | // (see in JavaClasses::compute_hard_coded_offsets()). |
duke@435 | 3126 | // Use default fields allocation order for them. |
duke@435 | 3127 | if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && |
duke@435 | 3128 | (class_name() == vmSymbols::java_lang_AssertionStatusDirectives() || |
duke@435 | 3129 | class_name() == vmSymbols::java_lang_Class() || |
duke@435 | 3130 | class_name() == vmSymbols::java_lang_ClassLoader() || |
duke@435 | 3131 | class_name() == vmSymbols::java_lang_ref_Reference() || |
duke@435 | 3132 | class_name() == vmSymbols::java_lang_ref_SoftReference() || |
duke@435 | 3133 | class_name() == vmSymbols::java_lang_StackTraceElement() || |
duke@435 | 3134 | class_name() == vmSymbols::java_lang_String() || |
coleenp@548 | 3135 | class_name() == vmSymbols::java_lang_Throwable() || |
coleenp@548 | 3136 | class_name() == vmSymbols::java_lang_Boolean() || |
coleenp@548 | 3137 | class_name() == vmSymbols::java_lang_Character() || |
coleenp@548 | 3138 | class_name() == vmSymbols::java_lang_Float() || |
coleenp@548 | 3139 | class_name() == vmSymbols::java_lang_Double() || |
coleenp@548 | 3140 | class_name() == vmSymbols::java_lang_Byte() || |
coleenp@548 | 3141 | class_name() == vmSymbols::java_lang_Short() || |
coleenp@548 | 3142 | class_name() == vmSymbols::java_lang_Integer() || |
coleenp@548 | 3143 | class_name() == vmSymbols::java_lang_Long())) { |
duke@435 | 3144 | allocation_style = 0; // Allocate oops first |
duke@435 | 3145 | compact_fields = false; // Don't compact fields |
duke@435 | 3146 | } |
duke@435 | 3147 | |
duke@435 | 3148 | if( allocation_style == 0 ) { |
duke@435 | 3149 | // Fields order: oops, longs/doubles, ints, shorts/chars, bytes |
duke@435 | 3150 | next_nonstatic_oop_offset = next_nonstatic_field_offset; |
duke@435 | 3151 | next_nonstatic_double_offset = next_nonstatic_oop_offset + |
coleenp@548 | 3152 | (nonstatic_oop_count * heapOopSize); |
duke@435 | 3153 | } else if( allocation_style == 1 ) { |
duke@435 | 3154 | // Fields order: longs/doubles, ints, shorts/chars, bytes, oops |
duke@435 | 3155 | next_nonstatic_double_offset = next_nonstatic_field_offset; |
kvn@1801 | 3156 | } else if( allocation_style == 2 ) { |
kvn@1801 | 3157 | // Fields allocation: oops fields in super and sub classes are together. |
kvn@1801 | 3158 | if( nonstatic_field_size > 0 && super_klass() != NULL && |
kvn@1801 | 3159 | super_klass->nonstatic_oop_map_size() > 0 ) { |
kvn@1801 | 3160 | int map_size = super_klass->nonstatic_oop_map_size(); |
kvn@1801 | 3161 | OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
kvn@1801 | 3162 | OopMapBlock* last_map = first_map + map_size - 1; |
kvn@1801 | 3163 | int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
kvn@1801 | 3164 | if (next_offset == next_nonstatic_field_offset) { |
kvn@1801 | 3165 | allocation_style = 0; // allocate oops first |
kvn@1801 | 3166 | next_nonstatic_oop_offset = next_nonstatic_field_offset; |
kvn@1801 | 3167 | next_nonstatic_double_offset = next_nonstatic_oop_offset + |
kvn@1801 | 3168 | (nonstatic_oop_count * heapOopSize); |
kvn@1801 | 3169 | } |
kvn@1801 | 3170 | } |
kvn@1801 | 3171 | if( allocation_style == 2 ) { |
kvn@1801 | 3172 | allocation_style = 1; // allocate oops last |
kvn@1801 | 3173 | next_nonstatic_double_offset = next_nonstatic_field_offset; |
kvn@1801 | 3174 | } |
duke@435 | 3175 | } else { |
duke@435 | 3176 | ShouldNotReachHere(); |
duke@435 | 3177 | } |
duke@435 | 3178 | |
duke@435 | 3179 | int nonstatic_oop_space_count = 0; |
duke@435 | 3180 | int nonstatic_word_space_count = 0; |
duke@435 | 3181 | int nonstatic_short_space_count = 0; |
duke@435 | 3182 | int nonstatic_byte_space_count = 0; |
duke@435 | 3183 | int nonstatic_oop_space_offset; |
duke@435 | 3184 | int nonstatic_word_space_offset; |
duke@435 | 3185 | int nonstatic_short_space_offset; |
duke@435 | 3186 | int nonstatic_byte_space_offset; |
duke@435 | 3187 | |
kvn@600 | 3188 | if( nonstatic_double_count > 0 ) { |
kvn@600 | 3189 | int offset = next_nonstatic_double_offset; |
duke@435 | 3190 | next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
duke@435 | 3191 | if( compact_fields && offset != next_nonstatic_double_offset ) { |
duke@435 | 3192 | // Allocate available fields into the gap before double field. |
duke@435 | 3193 | int length = next_nonstatic_double_offset - offset; |
duke@435 | 3194 | assert(length == BytesPerInt, ""); |
duke@435 | 3195 | nonstatic_word_space_offset = offset; |
duke@435 | 3196 | if( nonstatic_word_count > 0 ) { |
duke@435 | 3197 | nonstatic_word_count -= 1; |
duke@435 | 3198 | nonstatic_word_space_count = 1; // Only one will fit |
duke@435 | 3199 | length -= BytesPerInt; |
duke@435 | 3200 | offset += BytesPerInt; |
duke@435 | 3201 | } |
duke@435 | 3202 | nonstatic_short_space_offset = offset; |
duke@435 | 3203 | while( length >= BytesPerShort && nonstatic_short_count > 0 ) { |
duke@435 | 3204 | nonstatic_short_count -= 1; |
duke@435 | 3205 | nonstatic_short_space_count += 1; |
duke@435 | 3206 | length -= BytesPerShort; |
duke@435 | 3207 | offset += BytesPerShort; |
duke@435 | 3208 | } |
duke@435 | 3209 | nonstatic_byte_space_offset = offset; |
duke@435 | 3210 | while( length > 0 && nonstatic_byte_count > 0 ) { |
duke@435 | 3211 | nonstatic_byte_count -= 1; |
duke@435 | 3212 | nonstatic_byte_space_count += 1; |
duke@435 | 3213 | length -= 1; |
duke@435 | 3214 | } |
duke@435 | 3215 | // Allocate oop field in the gap if there are no other fields for that. |
duke@435 | 3216 | nonstatic_oop_space_offset = offset; |
kvn@600 | 3217 | if( length >= heapOopSize && nonstatic_oop_count > 0 && |
duke@435 | 3218 | allocation_style != 0 ) { // when oop fields not first |
duke@435 | 3219 | nonstatic_oop_count -= 1; |
duke@435 | 3220 | nonstatic_oop_space_count = 1; // Only one will fit |
coleenp@548 | 3221 | length -= heapOopSize; |
coleenp@548 | 3222 | offset += heapOopSize; |
duke@435 | 3223 | } |
duke@435 | 3224 | } |
duke@435 | 3225 | } |
duke@435 | 3226 | |
duke@435 | 3227 | next_nonstatic_word_offset = next_nonstatic_double_offset + |
duke@435 | 3228 | (nonstatic_double_count * BytesPerLong); |
duke@435 | 3229 | next_nonstatic_short_offset = next_nonstatic_word_offset + |
duke@435 | 3230 | (nonstatic_word_count * BytesPerInt); |
duke@435 | 3231 | next_nonstatic_byte_offset = next_nonstatic_short_offset + |
duke@435 | 3232 | (nonstatic_short_count * BytesPerShort); |
duke@435 | 3233 | |
duke@435 | 3234 | int notaligned_offset; |
duke@435 | 3235 | if( allocation_style == 0 ) { |
duke@435 | 3236 | notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; |
duke@435 | 3237 | } else { // allocation_style == 1 |
duke@435 | 3238 | next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; |
duke@435 | 3239 | if( nonstatic_oop_count > 0 ) { |
coleenp@548 | 3240 | next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
duke@435 | 3241 | } |
coleenp@548 | 3242 | notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
duke@435 | 3243 | } |
kvn@600 | 3244 | next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
duke@435 | 3245 | nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
kvn@600 | 3246 | - first_nonstatic_field_offset)/heapOopSize); |
duke@435 | 3247 | |
duke@435 | 3248 | // Iterate over fields again and compute correct offsets. |
duke@435 | 3249 | // The field allocation type was temporarily stored in the offset slot. |
duke@435 | 3250 | // oop fields are located before non-oop fields (static and non-static). |
duke@435 | 3251 | int len = fields->length(); |
duke@435 | 3252 | for (int i = 0; i < len; i += instanceKlass::next_offset) { |
duke@435 | 3253 | int real_offset; |
twisti@1543 | 3254 | FieldAllocationType atype = (FieldAllocationType) fields->ushort_at(i + instanceKlass::low_offset); |
duke@435 | 3255 | switch (atype) { |
duke@435 | 3256 | case STATIC_OOP: |
duke@435 | 3257 | real_offset = next_static_oop_offset; |
coleenp@548 | 3258 | next_static_oop_offset += heapOopSize; |
duke@435 | 3259 | break; |
duke@435 | 3260 | case STATIC_BYTE: |
duke@435 | 3261 | real_offset = next_static_byte_offset; |
duke@435 | 3262 | next_static_byte_offset += 1; |
duke@435 | 3263 | break; |
duke@435 | 3264 | case STATIC_SHORT: |
duke@435 | 3265 | real_offset = next_static_short_offset; |
duke@435 | 3266 | next_static_short_offset += BytesPerShort; |
duke@435 | 3267 | break; |
duke@435 | 3268 | case STATIC_WORD: |
duke@435 | 3269 | real_offset = next_static_word_offset; |
duke@435 | 3270 | next_static_word_offset += BytesPerInt; |
duke@435 | 3271 | break; |
duke@435 | 3272 | case STATIC_ALIGNED_DOUBLE: |
duke@435 | 3273 | case STATIC_DOUBLE: |
duke@435 | 3274 | real_offset = next_static_double_offset; |
duke@435 | 3275 | next_static_double_offset += BytesPerLong; |
duke@435 | 3276 | break; |
duke@435 | 3277 | case NONSTATIC_OOP: |
duke@435 | 3278 | if( nonstatic_oop_space_count > 0 ) { |
duke@435 | 3279 | real_offset = nonstatic_oop_space_offset; |
coleenp@548 | 3280 | nonstatic_oop_space_offset += heapOopSize; |
duke@435 | 3281 | nonstatic_oop_space_count -= 1; |
duke@435 | 3282 | } else { |
duke@435 | 3283 | real_offset = next_nonstatic_oop_offset; |
coleenp@548 | 3284 | next_nonstatic_oop_offset += heapOopSize; |
duke@435 | 3285 | } |
duke@435 | 3286 | // Update oop maps |
duke@435 | 3287 | if( nonstatic_oop_map_count > 0 && |
duke@435 | 3288 | nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == |
jcoomes@1374 | 3289 | real_offset - |
jcoomes@1374 | 3290 | int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
jcoomes@1374 | 3291 | heapOopSize ) { |
duke@435 | 3292 | // Extend current oop map |
jcoomes@1373 | 3293 | nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
duke@435 | 3294 | } else { |
duke@435 | 3295 | // Create new oop map |
jcoomes@1374 | 3296 | nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
jcoomes@1373 | 3297 | nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
duke@435 | 3298 | nonstatic_oop_map_count += 1; |
duke@435 | 3299 | if( first_nonstatic_oop_offset == 0 ) { // Undefined |
duke@435 | 3300 | first_nonstatic_oop_offset = real_offset; |
duke@435 | 3301 | } |
duke@435 | 3302 | } |
duke@435 | 3303 | break; |
duke@435 | 3304 | case NONSTATIC_BYTE: |
duke@435 | 3305 | if( nonstatic_byte_space_count > 0 ) { |
duke@435 | 3306 | real_offset = nonstatic_byte_space_offset; |
duke@435 | 3307 | nonstatic_byte_space_offset += 1; |
duke@435 | 3308 | nonstatic_byte_space_count -= 1; |
duke@435 | 3309 | } else { |
duke@435 | 3310 | real_offset = next_nonstatic_byte_offset; |
duke@435 | 3311 | next_nonstatic_byte_offset += 1; |
duke@435 | 3312 | } |
duke@435 | 3313 | break; |
duke@435 | 3314 | case NONSTATIC_SHORT: |
duke@435 | 3315 | if( nonstatic_short_space_count > 0 ) { |
duke@435 | 3316 | real_offset = nonstatic_short_space_offset; |
duke@435 | 3317 | nonstatic_short_space_offset += BytesPerShort; |
duke@435 | 3318 | nonstatic_short_space_count -= 1; |
duke@435 | 3319 | } else { |
duke@435 | 3320 | real_offset = next_nonstatic_short_offset; |
duke@435 | 3321 | next_nonstatic_short_offset += BytesPerShort; |
duke@435 | 3322 | } |
duke@435 | 3323 | break; |
duke@435 | 3324 | case NONSTATIC_WORD: |
duke@435 | 3325 | if( nonstatic_word_space_count > 0 ) { |
duke@435 | 3326 | real_offset = nonstatic_word_space_offset; |
duke@435 | 3327 | nonstatic_word_space_offset += BytesPerInt; |
duke@435 | 3328 | nonstatic_word_space_count -= 1; |
duke@435 | 3329 | } else { |
duke@435 | 3330 | real_offset = next_nonstatic_word_offset; |
duke@435 | 3331 | next_nonstatic_word_offset += BytesPerInt; |
duke@435 | 3332 | } |
duke@435 | 3333 | break; |
duke@435 | 3334 | case NONSTATIC_ALIGNED_DOUBLE: |
duke@435 | 3335 | case NONSTATIC_DOUBLE: |
duke@435 | 3336 | real_offset = next_nonstatic_double_offset; |
duke@435 | 3337 | next_nonstatic_double_offset += BytesPerLong; |
duke@435 | 3338 | break; |
duke@435 | 3339 | default: |
duke@435 | 3340 | ShouldNotReachHere(); |
duke@435 | 3341 | } |
twisti@1543 | 3342 | fields->short_at_put(i + instanceKlass::low_offset, extract_low_short_from_int(real_offset)); |
twisti@1543 | 3343 | fields->short_at_put(i + instanceKlass::high_offset, extract_high_short_from_int(real_offset)); |
duke@435 | 3344 | } |
duke@435 | 3345 | |
duke@435 | 3346 | // Size of instances |
duke@435 | 3347 | int instance_size; |
duke@435 | 3348 | |
kvn@600 | 3349 | next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
duke@435 | 3350 | instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
duke@435 | 3351 | |
kvn@600 | 3352 | assert(instance_size == align_object_size(align_size_up((instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize), wordSize) / wordSize), "consistent layout helper value"); |
duke@435 | 3353 | |
jcoomes@1373 | 3354 | // Number of non-static oop map blocks allocated at end of klass. |
jcoomes@1374 | 3355 | const unsigned int total_oop_map_count = |
jcoomes@1374 | 3356 | compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
jcoomes@1374 | 3357 | first_nonstatic_oop_offset); |
duke@435 | 3358 | |
duke@435 | 3359 | // Compute reference type |
duke@435 | 3360 | ReferenceType rt; |
duke@435 | 3361 | if (super_klass() == NULL) { |
duke@435 | 3362 | rt = REF_NONE; |
duke@435 | 3363 | } else { |
duke@435 | 3364 | rt = super_klass->reference_type(); |
duke@435 | 3365 | } |
duke@435 | 3366 | |
duke@435 | 3367 | // We can now create the basic klassOop for this klass |
jcoomes@1374 | 3368 | klassOop ik = oopFactory::new_instanceKlass(vtable_size, itable_size, |
jcoomes@1374 | 3369 | static_field_size, |
jcoomes@1374 | 3370 | total_oop_map_count, |
jcoomes@1374 | 3371 | rt, CHECK_(nullHandle)); |
duke@435 | 3372 | instanceKlassHandle this_klass (THREAD, ik); |
duke@435 | 3373 | |
jcoomes@1373 | 3374 | assert(this_klass->static_field_size() == static_field_size, "sanity"); |
jcoomes@1373 | 3375 | assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, |
jcoomes@1373 | 3376 | "sanity"); |
duke@435 | 3377 | |
duke@435 | 3378 | // Fill in information already parsed |
duke@435 | 3379 | this_klass->set_access_flags(access_flags); |
acorn@1410 | 3380 | this_klass->set_should_verify_class(verify); |
duke@435 | 3381 | jint lh = Klass::instance_layout_helper(instance_size, false); |
duke@435 | 3382 | this_klass->set_layout_helper(lh); |
duke@435 | 3383 | assert(this_klass->oop_is_instance(), "layout is correct"); |
duke@435 | 3384 | assert(this_klass->size_helper() == instance_size, "correct size_helper"); |
duke@435 | 3385 | // Not yet: supers are done below to support the new subtype-checking fields |
duke@435 | 3386 | //this_klass->set_super(super_klass()); |
duke@435 | 3387 | this_klass->set_class_loader(class_loader()); |
duke@435 | 3388 | this_klass->set_nonstatic_field_size(nonstatic_field_size); |
acorn@1410 | 3389 | this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
duke@435 | 3390 | this_klass->set_static_oop_field_size(fac.static_oop_count); |
duke@435 | 3391 | cp->set_pool_holder(this_klass()); |
duke@435 | 3392 | this_klass->set_constants(cp()); |
duke@435 | 3393 | this_klass->set_local_interfaces(local_interfaces()); |
duke@435 | 3394 | this_klass->set_fields(fields()); |
duke@435 | 3395 | this_klass->set_methods(methods()); |
duke@435 | 3396 | if (has_final_method) { |
duke@435 | 3397 | this_klass->set_has_final_method(); |
duke@435 | 3398 | } |
duke@435 | 3399 | this_klass->set_method_ordering(method_ordering()); |
dcubed@1412 | 3400 | // The instanceKlass::_methods_jmethod_ids cache and the |
dcubed@1412 | 3401 | // instanceKlass::_methods_cached_itable_indices cache are |
dcubed@1412 | 3402 | // both managed on the assumption that the initial cache |
dcubed@1412 | 3403 | // size is equal to the number of methods in the class. If |
dcubed@1412 | 3404 | // that changes, then instanceKlass::idnum_can_increment() |
dcubed@1412 | 3405 | // has to be changed accordingly. |
duke@435 | 3406 | this_klass->set_initial_method_idnum(methods->length()); |
duke@435 | 3407 | this_klass->set_name(cp->klass_name_at(this_class_index)); |
jrose@1145 | 3408 | if (LinkWellKnownClasses || is_anonymous()) // I am well known to myself |
jrose@909 | 3409 | cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
duke@435 | 3410 | this_klass->set_protection_domain(protection_domain()); |
duke@435 | 3411 | this_klass->set_fields_annotations(fields_annotations()); |
duke@435 | 3412 | this_klass->set_methods_annotations(methods_annotations()); |
duke@435 | 3413 | this_klass->set_methods_parameter_annotations(methods_parameter_annotations()); |
duke@435 | 3414 | this_klass->set_methods_default_annotations(methods_default_annotations()); |
duke@435 | 3415 | |
duke@435 | 3416 | this_klass->set_minor_version(minor_version); |
duke@435 | 3417 | this_klass->set_major_version(major_version); |
duke@435 | 3418 | |
jrose@1291 | 3419 | // Set up methodOop::intrinsic_id as soon as we know the names of methods. |
jrose@1291 | 3420 | // (We used to do this lazily, but now we query it in Rewriter, |
jrose@1291 | 3421 | // which is eagerly done for every method, so we might as well do it now, |
jrose@1291 | 3422 | // when everything is fresh in memory.) |
jrose@1291 | 3423 | if (methodOopDesc::klass_id_for_intrinsics(this_klass->as_klassOop()) != vmSymbols::NO_SID) { |
jrose@1291 | 3424 | for (int j = 0; j < methods->length(); j++) { |
jrose@1291 | 3425 | ((methodOop)methods->obj_at(j))->init_intrinsic_id(); |
jrose@1291 | 3426 | } |
jrose@1291 | 3427 | } |
jrose@1291 | 3428 | |
duke@435 | 3429 | if (cached_class_file_bytes != NULL) { |
duke@435 | 3430 | // JVMTI: we have an instanceKlass now, tell it about the cached bytes |
duke@435 | 3431 | this_klass->set_cached_class_file(cached_class_file_bytes, |
duke@435 | 3432 | cached_class_file_length); |
duke@435 | 3433 | } |
duke@435 | 3434 | |
duke@435 | 3435 | // Miranda methods |
duke@435 | 3436 | if ((num_miranda_methods > 0) || |
duke@435 | 3437 | // if this class introduced new miranda methods or |
duke@435 | 3438 | (super_klass.not_null() && (super_klass->has_miranda_methods())) |
duke@435 | 3439 | // super class exists and this class inherited miranda methods |
duke@435 | 3440 | ) { |
duke@435 | 3441 | this_klass->set_has_miranda_methods(); // then set a flag |
duke@435 | 3442 | } |
duke@435 | 3443 | |
duke@435 | 3444 | // Additional attributes |
duke@435 | 3445 | parse_classfile_attributes(cp, this_klass, CHECK_(nullHandle)); |
duke@435 | 3446 | |
duke@435 | 3447 | // Make sure this is the end of class file stream |
duke@435 | 3448 | guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
duke@435 | 3449 | |
duke@435 | 3450 | // Initialize static fields |
duke@435 | 3451 | this_klass->do_local_static_fields(&initialize_static_field, CHECK_(nullHandle)); |
duke@435 | 3452 | |
duke@435 | 3453 | // VerifyOops believes that once this has been set, the object is completely loaded. |
duke@435 | 3454 | // Compute transitive closure of interfaces this class implements |
duke@435 | 3455 | this_klass->set_transitive_interfaces(transitive_interfaces()); |
duke@435 | 3456 | |
duke@435 | 3457 | // Fill in information needed to compute superclasses. |
duke@435 | 3458 | this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); |
duke@435 | 3459 | |
duke@435 | 3460 | // Initialize itable offset tables |
duke@435 | 3461 | klassItable::setup_itable_offset_table(this_klass); |
duke@435 | 3462 | |
duke@435 | 3463 | // Do final class setup |
jcoomes@1373 | 3464 | fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
duke@435 | 3465 | |
duke@435 | 3466 | set_precomputed_flags(this_klass); |
duke@435 | 3467 | |
duke@435 | 3468 | // reinitialize modifiers, using the InnerClasses attribute |
duke@435 | 3469 | int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); |
duke@435 | 3470 | this_klass->set_modifier_flags(computed_modifiers); |
duke@435 | 3471 | |
duke@435 | 3472 | // check if this class can access its super class |
duke@435 | 3473 | check_super_class_access(this_klass, CHECK_(nullHandle)); |
duke@435 | 3474 | |
duke@435 | 3475 | // check if this class can access its superinterfaces |
duke@435 | 3476 | check_super_interface_access(this_klass, CHECK_(nullHandle)); |
duke@435 | 3477 | |
duke@435 | 3478 | // check if this class overrides any final method |
duke@435 | 3479 | check_final_method_override(this_klass, CHECK_(nullHandle)); |
duke@435 | 3480 | |
duke@435 | 3481 | // check that if this class is an interface then it doesn't have static methods |
duke@435 | 3482 | if (this_klass->is_interface()) { |
duke@435 | 3483 | check_illegal_static_method(this_klass, CHECK_(nullHandle)); |
duke@435 | 3484 | } |
duke@435 | 3485 | |
duke@435 | 3486 | ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()), |
duke@435 | 3487 | false /* not shared class */); |
duke@435 | 3488 | |
duke@435 | 3489 | if (TraceClassLoading) { |
duke@435 | 3490 | // print in a single call to reduce interleaving of output |
duke@435 | 3491 | if (cfs->source() != NULL) { |
duke@435 | 3492 | tty->print("[Loaded %s from %s]\n", this_klass->external_name(), |
duke@435 | 3493 | cfs->source()); |
duke@435 | 3494 | } else if (class_loader.is_null()) { |
duke@435 | 3495 | if (THREAD->is_Java_thread()) { |
duke@435 | 3496 | klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
duke@435 | 3497 | tty->print("[Loaded %s by instance of %s]\n", |
duke@435 | 3498 | this_klass->external_name(), |
duke@435 | 3499 | instanceKlass::cast(caller)->external_name()); |
duke@435 | 3500 | } else { |
duke@435 | 3501 | tty->print("[Loaded %s]\n", this_klass->external_name()); |
duke@435 | 3502 | } |
duke@435 | 3503 | } else { |
duke@435 | 3504 | ResourceMark rm; |
duke@435 | 3505 | tty->print("[Loaded %s from %s]\n", this_klass->external_name(), |
duke@435 | 3506 | instanceKlass::cast(class_loader->klass())->external_name()); |
duke@435 | 3507 | } |
duke@435 | 3508 | } |
duke@435 | 3509 | |
duke@435 | 3510 | if (TraceClassResolution) { |
duke@435 | 3511 | // print out the superclass. |
duke@435 | 3512 | const char * from = Klass::cast(this_klass())->external_name(); |
duke@435 | 3513 | if (this_klass->java_super() != NULL) { |
acorn@1092 | 3514 | tty->print("RESOLVE %s %s (super)\n", from, instanceKlass::cast(this_klass->java_super())->external_name()); |
duke@435 | 3515 | } |
duke@435 | 3516 | // print out each of the interface classes referred to by this class. |
duke@435 | 3517 | objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces()); |
duke@435 | 3518 | if (!local_interfaces.is_null()) { |
duke@435 | 3519 | int length = local_interfaces->length(); |
duke@435 | 3520 | for (int i = 0; i < length; i++) { |
duke@435 | 3521 | klassOop k = klassOop(local_interfaces->obj_at(i)); |
duke@435 | 3522 | instanceKlass* to_class = instanceKlass::cast(k); |
duke@435 | 3523 | const char * to = to_class->external_name(); |
acorn@1092 | 3524 | tty->print("RESOLVE %s %s (interface)\n", from, to); |
duke@435 | 3525 | } |
duke@435 | 3526 | } |
duke@435 | 3527 | } |
duke@435 | 3528 | |
duke@435 | 3529 | #ifndef PRODUCT |
duke@435 | 3530 | if( PrintCompactFieldsSavings ) { |
duke@435 | 3531 | if( nonstatic_field_size < orig_nonstatic_field_size ) { |
kvn@600 | 3532 | tty->print("[Saved %d of %d bytes in %s]\n", |
kvn@600 | 3533 | (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
kvn@600 | 3534 | orig_nonstatic_field_size*heapOopSize, |
kvn@600 | 3535 | this_klass->external_name()); |
duke@435 | 3536 | } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
kvn@600 | 3537 | tty->print("[Wasted %d over %d bytes in %s]\n", |
kvn@600 | 3538 | (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
kvn@600 | 3539 | orig_nonstatic_field_size*heapOopSize, |
kvn@600 | 3540 | this_klass->external_name()); |
duke@435 | 3541 | } |
duke@435 | 3542 | } |
duke@435 | 3543 | #endif |
duke@435 | 3544 | |
duke@435 | 3545 | // preserve result across HandleMark |
duke@435 | 3546 | preserve_this_klass = this_klass(); |
duke@435 | 3547 | } |
duke@435 | 3548 | |
duke@435 | 3549 | // Create new handle outside HandleMark |
duke@435 | 3550 | instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
duke@435 | 3551 | debug_only(this_klass->as_klassOop()->verify();) |
duke@435 | 3552 | |
duke@435 | 3553 | return this_klass; |
duke@435 | 3554 | } |
duke@435 | 3555 | |
duke@435 | 3556 | |
jcoomes@1374 | 3557 | unsigned int |
jcoomes@1374 | 3558 | ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
jcoomes@1374 | 3559 | unsigned int nonstatic_oop_map_count, |
jcoomes@1374 | 3560 | int first_nonstatic_oop_offset) { |
jcoomes@1374 | 3561 | unsigned int map_count = |
jcoomes@1374 | 3562 | super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
duke@435 | 3563 | if (nonstatic_oop_map_count > 0) { |
duke@435 | 3564 | // We have oops to add to map |
jcoomes@1373 | 3565 | if (map_count == 0) { |
jcoomes@1373 | 3566 | map_count = nonstatic_oop_map_count; |
duke@435 | 3567 | } else { |
jcoomes@1373 | 3568 | // Check whether we should add a new map block or whether the last one can |
jcoomes@1373 | 3569 | // be extended |
jcoomes@1373 | 3570 | OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); |
jcoomes@1373 | 3571 | OopMapBlock* const last_map = first_map + map_count - 1; |
jcoomes@1373 | 3572 | |
jcoomes@1373 | 3573 | int next_offset = last_map->offset() + last_map->count() * heapOopSize; |
duke@435 | 3574 | if (next_offset == first_nonstatic_oop_offset) { |
duke@435 | 3575 | // There is no gap bettwen superklass's last oop field and first |
duke@435 | 3576 | // local oop field, merge maps. |
duke@435 | 3577 | nonstatic_oop_map_count -= 1; |
duke@435 | 3578 | } else { |
duke@435 | 3579 | // Superklass didn't end with a oop field, add extra maps |
jcoomes@1373 | 3580 | assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
duke@435 | 3581 | } |
jcoomes@1373 | 3582 | map_count += nonstatic_oop_map_count; |
duke@435 | 3583 | } |
duke@435 | 3584 | } |
jcoomes@1373 | 3585 | return map_count; |
duke@435 | 3586 | } |
duke@435 | 3587 | |
duke@435 | 3588 | |
duke@435 | 3589 | void ClassFileParser::fill_oop_maps(instanceKlassHandle k, |
jcoomes@1374 | 3590 | unsigned int nonstatic_oop_map_count, |
jcoomes@1374 | 3591 | int* nonstatic_oop_offsets, |
jcoomes@1374 | 3592 | unsigned int* nonstatic_oop_counts) { |
duke@435 | 3593 | OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
jcoomes@1373 | 3594 | const instanceKlass* const super = k->superklass(); |
jcoomes@1374 | 3595 | const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
jcoomes@1373 | 3596 | if (super_count > 0) { |
jcoomes@1373 | 3597 | // Copy maps from superklass |
duke@435 | 3598 | OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
jcoomes@1374 | 3599 | for (unsigned int i = 0; i < super_count; ++i) { |
duke@435 | 3600 | *this_oop_map++ = *super_oop_map++; |
duke@435 | 3601 | } |
duke@435 | 3602 | } |
jcoomes@1373 | 3603 | |
duke@435 | 3604 | if (nonstatic_oop_map_count > 0) { |
jcoomes@1373 | 3605 | if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
jcoomes@1373 | 3606 | // The counts differ because there is no gap between superklass's last oop |
jcoomes@1373 | 3607 | // field and the first local oop field. Extend the last oop map copied |
duke@435 | 3608 | // from the superklass instead of creating new one. |
duke@435 | 3609 | nonstatic_oop_map_count--; |
duke@435 | 3610 | nonstatic_oop_offsets++; |
duke@435 | 3611 | this_oop_map--; |
jcoomes@1373 | 3612 | this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
duke@435 | 3613 | this_oop_map++; |
duke@435 | 3614 | } |
jcoomes@1373 | 3615 | |
duke@435 | 3616 | // Add new map blocks, fill them |
duke@435 | 3617 | while (nonstatic_oop_map_count-- > 0) { |
duke@435 | 3618 | this_oop_map->set_offset(*nonstatic_oop_offsets++); |
jcoomes@1373 | 3619 | this_oop_map->set_count(*nonstatic_oop_counts++); |
duke@435 | 3620 | this_oop_map++; |
duke@435 | 3621 | } |
jcoomes@1373 | 3622 | assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
jcoomes@1373 | 3623 | this_oop_map, "sanity"); |
duke@435 | 3624 | } |
duke@435 | 3625 | } |
duke@435 | 3626 | |
duke@435 | 3627 | |
duke@435 | 3628 | void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { |
duke@435 | 3629 | klassOop super = k->super(); |
duke@435 | 3630 | |
duke@435 | 3631 | // Check if this klass has an empty finalize method (i.e. one with return bytecode only), |
duke@435 | 3632 | // in which case we don't have to register objects as finalizable |
duke@435 | 3633 | if (!_has_empty_finalizer) { |
duke@435 | 3634 | if (_has_finalizer || |
duke@435 | 3635 | (super != NULL && super->klass_part()->has_finalizer())) { |
duke@435 | 3636 | k->set_has_finalizer(); |
duke@435 | 3637 | } |
duke@435 | 3638 | } |
duke@435 | 3639 | |
duke@435 | 3640 | #ifdef ASSERT |
duke@435 | 3641 | bool f = false; |
duke@435 | 3642 | methodOop m = k->lookup_method(vmSymbols::finalize_method_name(), |
duke@435 | 3643 | vmSymbols::void_method_signature()); |
duke@435 | 3644 | if (m != NULL && !m->is_empty_method()) { |
duke@435 | 3645 | f = true; |
duke@435 | 3646 | } |
duke@435 | 3647 | assert(f == k->has_finalizer(), "inconsistent has_finalizer"); |
duke@435 | 3648 | #endif |
duke@435 | 3649 | |
duke@435 | 3650 | // Check if this klass supports the java.lang.Cloneable interface |
never@1577 | 3651 | if (SystemDictionary::Cloneable_klass_loaded()) { |
never@1577 | 3652 | if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { |
duke@435 | 3653 | k->set_is_cloneable(); |
duke@435 | 3654 | } |
duke@435 | 3655 | } |
duke@435 | 3656 | |
duke@435 | 3657 | // Check if this klass has a vanilla default constructor |
duke@435 | 3658 | if (super == NULL) { |
duke@435 | 3659 | // java.lang.Object has empty default constructor |
duke@435 | 3660 | k->set_has_vanilla_constructor(); |
duke@435 | 3661 | } else { |
duke@435 | 3662 | if (Klass::cast(super)->has_vanilla_constructor() && |
duke@435 | 3663 | _has_vanilla_constructor) { |
duke@435 | 3664 | k->set_has_vanilla_constructor(); |
duke@435 | 3665 | } |
duke@435 | 3666 | #ifdef ASSERT |
duke@435 | 3667 | bool v = false; |
duke@435 | 3668 | if (Klass::cast(super)->has_vanilla_constructor()) { |
duke@435 | 3669 | methodOop constructor = k->find_method(vmSymbols::object_initializer_name( |
duke@435 | 3670 | ), vmSymbols::void_method_signature()); |
duke@435 | 3671 | if (constructor != NULL && constructor->is_vanilla_constructor()) { |
duke@435 | 3672 | v = true; |
duke@435 | 3673 | } |
duke@435 | 3674 | } |
duke@435 | 3675 | assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); |
duke@435 | 3676 | #endif |
duke@435 | 3677 | } |
duke@435 | 3678 | |
duke@435 | 3679 | // If it cannot be fast-path allocated, set a bit in the layout helper. |
duke@435 | 3680 | // See documentation of instanceKlass::can_be_fastpath_allocated(). |
duke@435 | 3681 | assert(k->size_helper() > 0, "layout_helper is initialized"); |
duke@435 | 3682 | if ((!RegisterFinalizersAtInit && k->has_finalizer()) |
duke@435 | 3683 | || k->is_abstract() || k->is_interface() |
duke@435 | 3684 | || (k->name() == vmSymbols::java_lang_Class() |
duke@435 | 3685 | && k->class_loader() == NULL) |
duke@435 | 3686 | || k->size_helper() >= FastAllocateSizeLimit) { |
duke@435 | 3687 | // Forbid fast-path allocation. |
duke@435 | 3688 | jint lh = Klass::instance_layout_helper(k->size_helper(), true); |
duke@435 | 3689 | k->set_layout_helper(lh); |
duke@435 | 3690 | } |
duke@435 | 3691 | } |
duke@435 | 3692 | |
duke@435 | 3693 | |
duke@435 | 3694 | // utility method for appending and array with check for duplicates |
duke@435 | 3695 | |
duke@435 | 3696 | void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) { |
duke@435 | 3697 | // iterate over new interfaces |
duke@435 | 3698 | for (int i = 0; i < ifs->length(); i++) { |
duke@435 | 3699 | oop e = ifs->obj_at(i); |
duke@435 | 3700 | assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking"); |
duke@435 | 3701 | // check for duplicates |
duke@435 | 3702 | bool duplicate = false; |
duke@435 | 3703 | for (int j = 0; j < index; j++) { |
duke@435 | 3704 | if (result->obj_at(j) == e) { |
duke@435 | 3705 | duplicate = true; |
duke@435 | 3706 | break; |
duke@435 | 3707 | } |
duke@435 | 3708 | } |
duke@435 | 3709 | // add new interface |
duke@435 | 3710 | if (!duplicate) { |
duke@435 | 3711 | result->obj_at_put(index++, e); |
duke@435 | 3712 | } |
duke@435 | 3713 | } |
duke@435 | 3714 | } |
duke@435 | 3715 | |
duke@435 | 3716 | objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) { |
duke@435 | 3717 | // Compute maximum size for transitive interfaces |
duke@435 | 3718 | int max_transitive_size = 0; |
duke@435 | 3719 | int super_size = 0; |
duke@435 | 3720 | // Add superclass transitive interfaces size |
duke@435 | 3721 | if (super.not_null()) { |
duke@435 | 3722 | super_size = super->transitive_interfaces()->length(); |
duke@435 | 3723 | max_transitive_size += super_size; |
duke@435 | 3724 | } |
duke@435 | 3725 | // Add local interfaces' super interfaces |
duke@435 | 3726 | int local_size = local_ifs->length(); |
duke@435 | 3727 | for (int i = 0; i < local_size; i++) { |
duke@435 | 3728 | klassOop l = klassOop(local_ifs->obj_at(i)); |
duke@435 | 3729 | max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length(); |
duke@435 | 3730 | } |
duke@435 | 3731 | // Finally add local interfaces |
duke@435 | 3732 | max_transitive_size += local_size; |
duke@435 | 3733 | // Construct array |
duke@435 | 3734 | objArrayHandle result; |
duke@435 | 3735 | if (max_transitive_size == 0) { |
duke@435 | 3736 | // no interfaces, use canonicalized array |
duke@435 | 3737 | result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); |
duke@435 | 3738 | } else if (max_transitive_size == super_size) { |
duke@435 | 3739 | // no new local interfaces added, share superklass' transitive interface array |
duke@435 | 3740 | result = objArrayHandle(THREAD, super->transitive_interfaces()); |
duke@435 | 3741 | } else if (max_transitive_size == local_size) { |
duke@435 | 3742 | // only local interfaces added, share local interface array |
duke@435 | 3743 | result = local_ifs; |
duke@435 | 3744 | } else { |
duke@435 | 3745 | objArrayHandle nullHandle; |
duke@435 | 3746 | objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle)); |
duke@435 | 3747 | result = objArrayHandle(THREAD, new_objarray); |
duke@435 | 3748 | int index = 0; |
duke@435 | 3749 | // Copy down from superclass |
duke@435 | 3750 | if (super.not_null()) { |
duke@435 | 3751 | append_interfaces(result, index, super->transitive_interfaces()); |
duke@435 | 3752 | } |
duke@435 | 3753 | // Copy down from local interfaces' superinterfaces |
duke@435 | 3754 | for (int i = 0; i < local_ifs->length(); i++) { |
duke@435 | 3755 | klassOop l = klassOop(local_ifs->obj_at(i)); |
duke@435 | 3756 | append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces()); |
duke@435 | 3757 | } |
duke@435 | 3758 | // Finally add local interfaces |
duke@435 | 3759 | append_interfaces(result, index, local_ifs()); |
duke@435 | 3760 | |
duke@435 | 3761 | // Check if duplicates were removed |
duke@435 | 3762 | if (index != max_transitive_size) { |
duke@435 | 3763 | assert(index < max_transitive_size, "just checking"); |
duke@435 | 3764 | objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle)); |
duke@435 | 3765 | for (int i = 0; i < index; i++) { |
duke@435 | 3766 | oop e = result->obj_at(i); |
duke@435 | 3767 | assert(e != NULL, "just checking"); |
duke@435 | 3768 | new_result->obj_at_put(i, e); |
duke@435 | 3769 | } |
duke@435 | 3770 | result = objArrayHandle(THREAD, new_result); |
duke@435 | 3771 | } |
duke@435 | 3772 | } |
duke@435 | 3773 | return result; |
duke@435 | 3774 | } |
duke@435 | 3775 | |
duke@435 | 3776 | |
duke@435 | 3777 | void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { |
duke@435 | 3778 | klassOop super = this_klass->super(); |
duke@435 | 3779 | if ((super != NULL) && |
duke@435 | 3780 | (!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) { |
duke@435 | 3781 | ResourceMark rm(THREAD); |
duke@435 | 3782 | Exceptions::fthrow( |
duke@435 | 3783 | THREAD_AND_LOCATION, |
duke@435 | 3784 | vmSymbolHandles::java_lang_IllegalAccessError(), |
duke@435 | 3785 | "class %s cannot access its superclass %s", |
duke@435 | 3786 | this_klass->external_name(), |
duke@435 | 3787 | instanceKlass::cast(super)->external_name() |
duke@435 | 3788 | ); |
duke@435 | 3789 | return; |
duke@435 | 3790 | } |
duke@435 | 3791 | } |
duke@435 | 3792 | |
duke@435 | 3793 | |
duke@435 | 3794 | void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { |
duke@435 | 3795 | objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces()); |
duke@435 | 3796 | int lng = local_interfaces->length(); |
duke@435 | 3797 | for (int i = lng - 1; i >= 0; i--) { |
duke@435 | 3798 | klassOop k = klassOop(local_interfaces->obj_at(i)); |
duke@435 | 3799 | assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface"); |
duke@435 | 3800 | if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) { |
duke@435 | 3801 | ResourceMark rm(THREAD); |
duke@435 | 3802 | Exceptions::fthrow( |
duke@435 | 3803 | THREAD_AND_LOCATION, |
duke@435 | 3804 | vmSymbolHandles::java_lang_IllegalAccessError(), |
duke@435 | 3805 | "class %s cannot access its superinterface %s", |
duke@435 | 3806 | this_klass->external_name(), |
duke@435 | 3807 | instanceKlass::cast(k)->external_name() |
duke@435 | 3808 | ); |
duke@435 | 3809 | return; |
duke@435 | 3810 | } |
duke@435 | 3811 | } |
duke@435 | 3812 | } |
duke@435 | 3813 | |
duke@435 | 3814 | |
duke@435 | 3815 | void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { |
duke@435 | 3816 | objArrayHandle methods (THREAD, this_klass->methods()); |
duke@435 | 3817 | int num_methods = methods->length(); |
duke@435 | 3818 | |
duke@435 | 3819 | // go thru each method and check if it overrides a final method |
duke@435 | 3820 | for (int index = 0; index < num_methods; index++) { |
duke@435 | 3821 | methodOop m = (methodOop)methods->obj_at(index); |
duke@435 | 3822 | |
duke@435 | 3823 | // skip private, static and <init> methods |
duke@435 | 3824 | if ((!m->is_private()) && |
duke@435 | 3825 | (!m->is_static()) && |
duke@435 | 3826 | (m->name() != vmSymbols::object_initializer_name())) { |
duke@435 | 3827 | |
duke@435 | 3828 | symbolOop name = m->name(); |
duke@435 | 3829 | symbolOop signature = m->signature(); |
duke@435 | 3830 | klassOop k = this_klass->super(); |
duke@435 | 3831 | methodOop super_m = NULL; |
duke@435 | 3832 | while (k != NULL) { |
duke@435 | 3833 | // skip supers that don't have final methods. |
duke@435 | 3834 | if (k->klass_part()->has_final_method()) { |
duke@435 | 3835 | // lookup a matching method in the super class hierarchy |
duke@435 | 3836 | super_m = instanceKlass::cast(k)->lookup_method(name, signature); |
duke@435 | 3837 | if (super_m == NULL) { |
duke@435 | 3838 | break; // didn't find any match; get out |
duke@435 | 3839 | } |
duke@435 | 3840 | |
duke@435 | 3841 | if (super_m->is_final() && |
duke@435 | 3842 | // matching method in super is final |
duke@435 | 3843 | (Reflection::verify_field_access(this_klass->as_klassOop(), |
duke@435 | 3844 | super_m->method_holder(), |
duke@435 | 3845 | super_m->method_holder(), |
duke@435 | 3846 | super_m->access_flags(), false)) |
duke@435 | 3847 | // this class can access super final method and therefore override |
duke@435 | 3848 | ) { |
duke@435 | 3849 | ResourceMark rm(THREAD); |
duke@435 | 3850 | Exceptions::fthrow( |
duke@435 | 3851 | THREAD_AND_LOCATION, |
duke@435 | 3852 | vmSymbolHandles::java_lang_VerifyError(), |
duke@435 | 3853 | "class %s overrides final method %s.%s", |
duke@435 | 3854 | this_klass->external_name(), |
duke@435 | 3855 | name->as_C_string(), |
duke@435 | 3856 | signature->as_C_string() |
duke@435 | 3857 | ); |
duke@435 | 3858 | return; |
duke@435 | 3859 | } |
duke@435 | 3860 | |
duke@435 | 3861 | // continue to look from super_m's holder's super. |
duke@435 | 3862 | k = instanceKlass::cast(super_m->method_holder())->super(); |
duke@435 | 3863 | continue; |
duke@435 | 3864 | } |
duke@435 | 3865 | |
duke@435 | 3866 | k = k->klass_part()->super(); |
duke@435 | 3867 | } |
duke@435 | 3868 | } |
duke@435 | 3869 | } |
duke@435 | 3870 | } |
duke@435 | 3871 | |
duke@435 | 3872 | |
duke@435 | 3873 | // assumes that this_klass is an interface |
duke@435 | 3874 | void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { |
duke@435 | 3875 | assert(this_klass->is_interface(), "not an interface"); |
duke@435 | 3876 | objArrayHandle methods (THREAD, this_klass->methods()); |
duke@435 | 3877 | int num_methods = methods->length(); |
duke@435 | 3878 | |
duke@435 | 3879 | for (int index = 0; index < num_methods; index++) { |
duke@435 | 3880 | methodOop m = (methodOop)methods->obj_at(index); |
duke@435 | 3881 | // if m is static and not the init method, throw a verify error |
duke@435 | 3882 | if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { |
duke@435 | 3883 | ResourceMark rm(THREAD); |
duke@435 | 3884 | Exceptions::fthrow( |
duke@435 | 3885 | THREAD_AND_LOCATION, |
duke@435 | 3886 | vmSymbolHandles::java_lang_VerifyError(), |
duke@435 | 3887 | "Illegal static method %s in interface %s", |
duke@435 | 3888 | m->name()->as_C_string(), |
duke@435 | 3889 | this_klass->external_name() |
duke@435 | 3890 | ); |
duke@435 | 3891 | return; |
duke@435 | 3892 | } |
duke@435 | 3893 | } |
duke@435 | 3894 | } |
duke@435 | 3895 | |
duke@435 | 3896 | // utility methods for format checking |
duke@435 | 3897 | |
duke@435 | 3898 | void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { |
duke@435 | 3899 | if (!_need_verify) { return; } |
duke@435 | 3900 | |
duke@435 | 3901 | const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; |
duke@435 | 3902 | const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; |
duke@435 | 3903 | const bool is_final = (flags & JVM_ACC_FINAL) != 0; |
duke@435 | 3904 | const bool is_super = (flags & JVM_ACC_SUPER) != 0; |
duke@435 | 3905 | const bool is_enum = (flags & JVM_ACC_ENUM) != 0; |
duke@435 | 3906 | const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; |
duke@435 | 3907 | const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
duke@435 | 3908 | |
duke@435 | 3909 | if ((is_abstract && is_final) || |
duke@435 | 3910 | (is_interface && !is_abstract) || |
duke@435 | 3911 | (is_interface && major_gte_15 && (is_super || is_enum)) || |
duke@435 | 3912 | (!is_interface && major_gte_15 && is_annotation)) { |
duke@435 | 3913 | ResourceMark rm(THREAD); |
duke@435 | 3914 | Exceptions::fthrow( |
duke@435 | 3915 | THREAD_AND_LOCATION, |
duke@435 | 3916 | vmSymbolHandles::java_lang_ClassFormatError(), |
duke@435 | 3917 | "Illegal class modifiers in class %s: 0x%X", |
duke@435 | 3918 | _class_name->as_C_string(), flags |
duke@435 | 3919 | ); |
duke@435 | 3920 | return; |
duke@435 | 3921 | } |
duke@435 | 3922 | } |
duke@435 | 3923 | |
duke@435 | 3924 | bool ClassFileParser::has_illegal_visibility(jint flags) { |
duke@435 | 3925 | const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; |
duke@435 | 3926 | const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
duke@435 | 3927 | const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; |
duke@435 | 3928 | |
duke@435 | 3929 | return ((is_public && is_protected) || |
duke@435 | 3930 | (is_public && is_private) || |
duke@435 | 3931 | (is_protected && is_private)); |
duke@435 | 3932 | } |
duke@435 | 3933 | |
duke@435 | 3934 | bool ClassFileParser::is_supported_version(u2 major, u2 minor) { |
xlu@1559 | 3935 | u2 max_version = |
xlu@1559 | 3936 | JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
xlu@1559 | 3937 | (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
duke@435 | 3938 | return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
kamg@611 | 3939 | (major <= max_version) && |
kamg@611 | 3940 | ((major != max_version) || |
duke@435 | 3941 | (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
duke@435 | 3942 | } |
duke@435 | 3943 | |
duke@435 | 3944 | void ClassFileParser::verify_legal_field_modifiers( |
duke@435 | 3945 | jint flags, bool is_interface, TRAPS) { |
duke@435 | 3946 | if (!_need_verify) { return; } |
duke@435 | 3947 | |
duke@435 | 3948 | const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; |
duke@435 | 3949 | const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
duke@435 | 3950 | const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; |
duke@435 | 3951 | const bool is_static = (flags & JVM_ACC_STATIC) != 0; |
duke@435 | 3952 | const bool is_final = (flags & JVM_ACC_FINAL) != 0; |
duke@435 | 3953 | const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; |
duke@435 | 3954 | const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; |
duke@435 | 3955 | const bool is_enum = (flags & JVM_ACC_ENUM) != 0; |
duke@435 | 3956 | const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
duke@435 | 3957 | |
duke@435 | 3958 | bool is_illegal = false; |
duke@435 | 3959 | |
duke@435 | 3960 | if (is_interface) { |
duke@435 | 3961 | if (!is_public || !is_static || !is_final || is_private || |
duke@435 | 3962 | is_protected || is_volatile || is_transient || |
duke@435 | 3963 | (major_gte_15 && is_enum)) { |
duke@435 | 3964 | is_illegal = true; |
duke@435 | 3965 | } |
duke@435 | 3966 | } else { // not interface |
duke@435 | 3967 | if (has_illegal_visibility(flags) || (is_final && is_volatile)) { |
duke@435 | 3968 | is_illegal = true; |
duke@435 | 3969 | } |
duke@435 | 3970 | } |
duke@435 | 3971 | |
duke@435 | 3972 | if (is_illegal) { |
duke@435 | 3973 | ResourceMark rm(THREAD); |
duke@435 | 3974 | Exceptions::fthrow( |
duke@435 | 3975 | THREAD_AND_LOCATION, |
duke@435 | 3976 | vmSymbolHandles::java_lang_ClassFormatError(), |
duke@435 | 3977 | "Illegal field modifiers in class %s: 0x%X", |
duke@435 | 3978 | _class_name->as_C_string(), flags); |
duke@435 | 3979 | return; |
duke@435 | 3980 | } |
duke@435 | 3981 | } |
duke@435 | 3982 | |
duke@435 | 3983 | void ClassFileParser::verify_legal_method_modifiers( |
duke@435 | 3984 | jint flags, bool is_interface, symbolHandle name, TRAPS) { |
duke@435 | 3985 | if (!_need_verify) { return; } |
duke@435 | 3986 | |
duke@435 | 3987 | const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; |
duke@435 | 3988 | const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; |
duke@435 | 3989 | const bool is_static = (flags & JVM_ACC_STATIC) != 0; |
duke@435 | 3990 | const bool is_final = (flags & JVM_ACC_FINAL) != 0; |
duke@435 | 3991 | const bool is_native = (flags & JVM_ACC_NATIVE) != 0; |
duke@435 | 3992 | const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; |
duke@435 | 3993 | const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; |
duke@435 | 3994 | const bool is_strict = (flags & JVM_ACC_STRICT) != 0; |
duke@435 | 3995 | const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; |
duke@435 | 3996 | const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
duke@435 | 3997 | const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
duke@435 | 3998 | |
duke@435 | 3999 | bool is_illegal = false; |
duke@435 | 4000 | |
duke@435 | 4001 | if (is_interface) { |
duke@435 | 4002 | if (!is_abstract || !is_public || is_static || is_final || |
duke@435 | 4003 | is_native || (major_gte_15 && (is_synchronized || is_strict))) { |
duke@435 | 4004 | is_illegal = true; |
duke@435 | 4005 | } |
duke@435 | 4006 | } else { // not interface |
duke@435 | 4007 | if (is_initializer) { |
duke@435 | 4008 | if (is_static || is_final || is_synchronized || is_native || |
duke@435 | 4009 | is_abstract || (major_gte_15 && is_bridge)) { |
duke@435 | 4010 | is_illegal = true; |
duke@435 | 4011 | } |
duke@435 | 4012 | } else { // not initializer |
duke@435 | 4013 | if (is_abstract) { |
duke@435 | 4014 | if ((is_final || is_native || is_private || is_static || |
duke@435 | 4015 | (major_gte_15 && (is_synchronized || is_strict)))) { |
duke@435 | 4016 | is_illegal = true; |
duke@435 | 4017 | } |
duke@435 | 4018 | } |
duke@435 | 4019 | if (has_illegal_visibility(flags)) { |
duke@435 | 4020 | is_illegal = true; |
duke@435 | 4021 | } |
duke@435 | 4022 | } |
duke@435 | 4023 | } |
duke@435 | 4024 | |
duke@435 | 4025 | if (is_illegal) { |
duke@435 | 4026 | ResourceMark rm(THREAD); |
duke@435 | 4027 | Exceptions::fthrow( |
duke@435 | 4028 | THREAD_AND_LOCATION, |
duke@435 | 4029 | vmSymbolHandles::java_lang_ClassFormatError(), |
duke@435 | 4030 | "Method %s in class %s has illegal modifiers: 0x%X", |
duke@435 | 4031 | name->as_C_string(), _class_name->as_C_string(), flags); |
duke@435 | 4032 | return; |
duke@435 | 4033 | } |
duke@435 | 4034 | } |
duke@435 | 4035 | |
duke@435 | 4036 | void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { |
duke@435 | 4037 | assert(_need_verify, "only called when _need_verify is true"); |
duke@435 | 4038 | int i = 0; |
duke@435 | 4039 | int count = length >> 2; |
duke@435 | 4040 | for (int k=0; k<count; k++) { |
duke@435 | 4041 | unsigned char b0 = buffer[i]; |
duke@435 | 4042 | unsigned char b1 = buffer[i+1]; |
duke@435 | 4043 | unsigned char b2 = buffer[i+2]; |
duke@435 | 4044 | unsigned char b3 = buffer[i+3]; |
duke@435 | 4045 | // For an unsigned char v, |
duke@435 | 4046 | // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; |
duke@435 | 4047 | // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. |
duke@435 | 4048 | unsigned char res = b0 | b0 - 1 | |
duke@435 | 4049 | b1 | b1 - 1 | |
duke@435 | 4050 | b2 | b2 - 1 | |
duke@435 | 4051 | b3 | b3 - 1; |
duke@435 | 4052 | if (res >= 128) break; |
duke@435 | 4053 | i += 4; |
duke@435 | 4054 | } |
duke@435 | 4055 | for(; i < length; i++) { |
duke@435 | 4056 | unsigned short c; |
duke@435 | 4057 | // no embedded zeros |
duke@435 | 4058 | guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); |
duke@435 | 4059 | if(buffer[i] < 128) { |
duke@435 | 4060 | continue; |
duke@435 | 4061 | } |
duke@435 | 4062 | if ((i + 5) < length) { // see if it's legal supplementary character |
duke@435 | 4063 | if (UTF8::is_supplementary_character(&buffer[i])) { |
duke@435 | 4064 | c = UTF8::get_supplementary_character(&buffer[i]); |
duke@435 | 4065 | i += 5; |
duke@435 | 4066 | continue; |
duke@435 | 4067 | } |
duke@435 | 4068 | } |
duke@435 | 4069 | switch (buffer[i] >> 4) { |
duke@435 | 4070 | default: break; |
duke@435 | 4071 | case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: |
duke@435 | 4072 | classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); |
duke@435 | 4073 | case 0xC: case 0xD: // 110xxxxx 10xxxxxx |
duke@435 | 4074 | c = (buffer[i] & 0x1F) << 6; |
duke@435 | 4075 | i++; |
duke@435 | 4076 | if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { |
duke@435 | 4077 | c += buffer[i] & 0x3F; |
duke@435 | 4078 | if (_major_version <= 47 || c == 0 || c >= 0x80) { |
duke@435 | 4079 | // for classes with major > 47, c must a null or a character in its shortest form |
duke@435 | 4080 | break; |
duke@435 | 4081 | } |
duke@435 | 4082 | } |
duke@435 | 4083 | classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); |
duke@435 | 4084 | case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx |
duke@435 | 4085 | c = (buffer[i] & 0xF) << 12; |
duke@435 | 4086 | i += 2; |
duke@435 | 4087 | if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { |
duke@435 | 4088 | c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); |
duke@435 | 4089 | if (_major_version <= 47 || c >= 0x800) { |
duke@435 | 4090 | // for classes with major > 47, c must be in its shortest form |
duke@435 | 4091 | break; |
duke@435 | 4092 | } |
duke@435 | 4093 | } |
duke@435 | 4094 | classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); |
duke@435 | 4095 | } // end of switch |
duke@435 | 4096 | } // end of for |
duke@435 | 4097 | } |
duke@435 | 4098 | |
duke@435 | 4099 | // Checks if name is a legal class name. |
duke@435 | 4100 | void ClassFileParser::verify_legal_class_name(symbolHandle name, TRAPS) { |
duke@435 | 4101 | if (!_need_verify || _relax_verify) { return; } |
duke@435 | 4102 | |
duke@435 | 4103 | char buf[fixed_buffer_size]; |
duke@435 | 4104 | char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
duke@435 | 4105 | unsigned int length = name->utf8_length(); |
duke@435 | 4106 | bool legal = false; |
duke@435 | 4107 | |
duke@435 | 4108 | if (length > 0) { |
duke@435 | 4109 | char* p; |
duke@435 | 4110 | if (bytes[0] == JVM_SIGNATURE_ARRAY) { |
duke@435 | 4111 | p = skip_over_field_signature(bytes, false, length, CHECK); |
duke@435 | 4112 | legal = (p != NULL) && ((p - bytes) == (int)length); |
duke@435 | 4113 | } else if (_major_version < JAVA_1_5_VERSION) { |
duke@435 | 4114 | if (bytes[0] != '<') { |
duke@435 | 4115 | p = skip_over_field_name(bytes, true, length); |
duke@435 | 4116 | legal = (p != NULL) && ((p - bytes) == (int)length); |
duke@435 | 4117 | } |
duke@435 | 4118 | } else { |
duke@435 | 4119 | // 4900761: relax the constraints based on JSR202 spec |
duke@435 | 4120 | // Class names may be drawn from the entire Unicode character set. |
duke@435 | 4121 | // Identifiers between '/' must be unqualified names. |
duke@435 | 4122 | // The utf8 string has been verified when parsing cpool entries. |
duke@435 | 4123 | legal = verify_unqualified_name(bytes, length, LegalClass); |
duke@435 | 4124 | } |
duke@435 | 4125 | } |
duke@435 | 4126 | if (!legal) { |
duke@435 | 4127 | ResourceMark rm(THREAD); |
duke@435 | 4128 | Exceptions::fthrow( |
duke@435 | 4129 | THREAD_AND_LOCATION, |
duke@435 | 4130 | vmSymbolHandles::java_lang_ClassFormatError(), |
duke@435 | 4131 | "Illegal class name \"%s\" in class file %s", bytes, |
duke@435 | 4132 | _class_name->as_C_string() |
duke@435 | 4133 | ); |
duke@435 | 4134 | return; |
duke@435 | 4135 | } |
duke@435 | 4136 | } |
duke@435 | 4137 | |
duke@435 | 4138 | // Checks if name is a legal field name. |
duke@435 | 4139 | void ClassFileParser::verify_legal_field_name(symbolHandle name, TRAPS) { |
duke@435 | 4140 | if (!_need_verify || _relax_verify) { return; } |
duke@435 | 4141 | |
duke@435 | 4142 | char buf[fixed_buffer_size]; |
duke@435 | 4143 | char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
duke@435 | 4144 | unsigned int length = name->utf8_length(); |
duke@435 | 4145 | bool legal = false; |
duke@435 | 4146 | |
duke@435 | 4147 | if (length > 0) { |
duke@435 | 4148 | if (_major_version < JAVA_1_5_VERSION) { |
duke@435 | 4149 | if (bytes[0] != '<') { |
duke@435 | 4150 | char* p = skip_over_field_name(bytes, false, length); |
duke@435 | 4151 | legal = (p != NULL) && ((p - bytes) == (int)length); |
duke@435 | 4152 | } |
duke@435 | 4153 | } else { |
duke@435 | 4154 | // 4881221: relax the constraints based on JSR202 spec |
duke@435 | 4155 | legal = verify_unqualified_name(bytes, length, LegalField); |
duke@435 | 4156 | } |
duke@435 | 4157 | } |
duke@435 | 4158 | |
duke@435 | 4159 | if (!legal) { |
duke@435 | 4160 | ResourceMark rm(THREAD); |
duke@435 | 4161 | Exceptions::fthrow( |
duke@435 | 4162 | THREAD_AND_LOCATION, |
duke@435 | 4163 | vmSymbolHandles::java_lang_ClassFormatError(), |
duke@435 | 4164 | "Illegal field name \"%s\" in class %s", bytes, |
duke@435 | 4165 | _class_name->as_C_string() |
duke@435 | 4166 | ); |
duke@435 | 4167 | return; |
duke@435 | 4168 | } |
duke@435 | 4169 | } |
duke@435 | 4170 | |
duke@435 | 4171 | // Checks if name is a legal method name. |
duke@435 | 4172 | void ClassFileParser::verify_legal_method_name(symbolHandle name, TRAPS) { |
duke@435 | 4173 | if (!_need_verify || _relax_verify) { return; } |
duke@435 | 4174 | |
duke@435 | 4175 | assert(!name.is_null(), "method name is null"); |
duke@435 | 4176 | char buf[fixed_buffer_size]; |
duke@435 | 4177 | char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
duke@435 | 4178 | unsigned int length = name->utf8_length(); |
duke@435 | 4179 | bool legal = false; |
duke@435 | 4180 | |
duke@435 | 4181 | if (length > 0) { |
duke@435 | 4182 | if (bytes[0] == '<') { |
duke@435 | 4183 | if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { |
duke@435 | 4184 | legal = true; |
duke@435 | 4185 | } |
duke@435 | 4186 | } else if (_major_version < JAVA_1_5_VERSION) { |
duke@435 | 4187 | char* p; |
duke@435 | 4188 | p = skip_over_field_name(bytes, false, length); |
duke@435 | 4189 | legal = (p != NULL) && ((p - bytes) == (int)length); |
duke@435 | 4190 | } else { |
duke@435 | 4191 | // 4881221: relax the constraints based on JSR202 spec |
duke@435 | 4192 | legal = verify_unqualified_name(bytes, length, LegalMethod); |
duke@435 | 4193 | } |
duke@435 | 4194 | } |
duke@435 | 4195 | |
duke@435 | 4196 | if (!legal) { |
duke@435 | 4197 | ResourceMark rm(THREAD); |
duke@435 | 4198 | Exceptions::fthrow( |
duke@435 | 4199 | THREAD_AND_LOCATION, |
duke@435 | 4200 | vmSymbolHandles::java_lang_ClassFormatError(), |
duke@435 | 4201 | "Illegal method name \"%s\" in class %s", bytes, |
duke@435 | 4202 | _class_name->as_C_string() |
duke@435 | 4203 | ); |
duke@435 | 4204 | return; |
duke@435 | 4205 | } |
duke@435 | 4206 | } |
duke@435 | 4207 | |
duke@435 | 4208 | |
duke@435 | 4209 | // Checks if signature is a legal field signature. |
duke@435 | 4210 | void ClassFileParser::verify_legal_field_signature(symbolHandle name, symbolHandle signature, TRAPS) { |
duke@435 | 4211 | if (!_need_verify) { return; } |
duke@435 | 4212 | |
duke@435 | 4213 | char buf[fixed_buffer_size]; |
duke@435 | 4214 | char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
duke@435 | 4215 | unsigned int length = signature->utf8_length(); |
duke@435 | 4216 | char* p = skip_over_field_signature(bytes, false, length, CHECK); |
duke@435 | 4217 | |
duke@435 | 4218 | if (p == NULL || (p - bytes) != (int)length) { |
kamg@1941 | 4219 | throwIllegalSignature("Field", name, signature, CHECK); |
duke@435 | 4220 | } |
duke@435 | 4221 | } |
duke@435 | 4222 | |
duke@435 | 4223 | // Checks if signature is a legal method signature. |
duke@435 | 4224 | // Returns number of parameters |
duke@435 | 4225 | int ClassFileParser::verify_legal_method_signature(symbolHandle name, symbolHandle signature, TRAPS) { |
duke@435 | 4226 | if (!_need_verify) { |
duke@435 | 4227 | // make sure caller's args_size will be less than 0 even for non-static |
duke@435 | 4228 | // method so it will be recomputed in compute_size_of_parameters(). |
duke@435 | 4229 | return -2; |
duke@435 | 4230 | } |
duke@435 | 4231 | |
duke@435 | 4232 | unsigned int args_size = 0; |
duke@435 | 4233 | char buf[fixed_buffer_size]; |
duke@435 | 4234 | char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); |
duke@435 | 4235 | unsigned int length = signature->utf8_length(); |
duke@435 | 4236 | char* nextp; |
duke@435 | 4237 | |
duke@435 | 4238 | // The first character must be a '(' |
duke@435 | 4239 | if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { |
duke@435 | 4240 | length--; |
duke@435 | 4241 | // Skip over legal field signatures |
duke@435 | 4242 | nextp = skip_over_field_signature(p, false, length, CHECK_0); |
duke@435 | 4243 | while ((length > 0) && (nextp != NULL)) { |
duke@435 | 4244 | args_size++; |
duke@435 | 4245 | if (p[0] == 'J' || p[0] == 'D') { |
duke@435 | 4246 | args_size++; |
duke@435 | 4247 | } |
duke@435 | 4248 | length -= nextp - p; |
duke@435 | 4249 | p = nextp; |
duke@435 | 4250 | nextp = skip_over_field_signature(p, false, length, CHECK_0); |
duke@435 | 4251 | } |
duke@435 | 4252 | // The first non-signature thing better be a ')' |
duke@435 | 4253 | if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { |
duke@435 | 4254 | length--; |
duke@435 | 4255 | if (name->utf8_length() > 0 && name->byte_at(0) == '<') { |
duke@435 | 4256 | // All internal methods must return void |
duke@435 | 4257 | if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { |
duke@435 | 4258 | return args_size; |
duke@435 | 4259 | } |
duke@435 | 4260 | } else { |
duke@435 | 4261 | // Now we better just have a return value |
duke@435 | 4262 | nextp = skip_over_field_signature(p, true, length, CHECK_0); |
duke@435 | 4263 | if (nextp && ((int)length == (nextp - p))) { |
duke@435 | 4264 | return args_size; |
duke@435 | 4265 | } |
duke@435 | 4266 | } |
duke@435 | 4267 | } |
duke@435 | 4268 | } |
duke@435 | 4269 | // Report error |
kamg@1941 | 4270 | throwIllegalSignature("Method", name, signature, CHECK_0); |
duke@435 | 4271 | return 0; |
duke@435 | 4272 | } |
duke@435 | 4273 | |
duke@435 | 4274 | |
duke@435 | 4275 | // Unqualified names may not contain the characters '.', ';', or '/'. |
duke@435 | 4276 | // Method names also may not contain the characters '<' or '>', unless <init> or <clinit>. |
duke@435 | 4277 | // Note that method names may not be <init> or <clinit> in this method. |
duke@435 | 4278 | // Because these names have been checked as special cases before calling this method |
duke@435 | 4279 | // in verify_legal_method_name. |
duke@435 | 4280 | bool ClassFileParser::verify_unqualified_name(char* name, unsigned int length, int type) { |
duke@435 | 4281 | jchar ch; |
duke@435 | 4282 | |
duke@435 | 4283 | for (char* p = name; p != name + length; ) { |
duke@435 | 4284 | ch = *p; |
duke@435 | 4285 | if (ch < 128) { |
duke@435 | 4286 | p++; |
duke@435 | 4287 | if (ch == '.' || ch == ';') { |
duke@435 | 4288 | return false; // do not permit '.' or ';' |
duke@435 | 4289 | } |
duke@435 | 4290 | if (type != LegalClass && ch == '/') { |
duke@435 | 4291 | return false; // do not permit '/' unless it's class name |
duke@435 | 4292 | } |
duke@435 | 4293 | if (type == LegalMethod && (ch == '<' || ch == '>')) { |
duke@435 | 4294 | return false; // do not permit '<' or '>' in method names |
duke@435 | 4295 | } |
duke@435 | 4296 | } else { |
duke@435 | 4297 | char* tmp_p = UTF8::next(p, &ch); |
duke@435 | 4298 | p = tmp_p; |
duke@435 | 4299 | } |
duke@435 | 4300 | } |
duke@435 | 4301 | return true; |
duke@435 | 4302 | } |
duke@435 | 4303 | |
duke@435 | 4304 | |
duke@435 | 4305 | // Take pointer to a string. Skip over the longest part of the string that could |
duke@435 | 4306 | // be taken as a fieldname. Allow '/' if slash_ok is true. |
duke@435 | 4307 | // Return a pointer to just past the fieldname. |
duke@435 | 4308 | // Return NULL if no fieldname at all was found, or in the case of slash_ok |
duke@435 | 4309 | // being true, we saw consecutive slashes (meaning we were looking for a |
duke@435 | 4310 | // qualified path but found something that was badly-formed). |
duke@435 | 4311 | char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { |
duke@435 | 4312 | char* p; |
duke@435 | 4313 | jchar ch; |
duke@435 | 4314 | jboolean last_is_slash = false; |
duke@435 | 4315 | jboolean not_first_ch = false; |
duke@435 | 4316 | |
duke@435 | 4317 | for (p = name; p != name + length; not_first_ch = true) { |
duke@435 | 4318 | char* old_p = p; |
duke@435 | 4319 | ch = *p; |
duke@435 | 4320 | if (ch < 128) { |
duke@435 | 4321 | p++; |
duke@435 | 4322 | // quick check for ascii |
duke@435 | 4323 | if ((ch >= 'a' && ch <= 'z') || |
duke@435 | 4324 | (ch >= 'A' && ch <= 'Z') || |
duke@435 | 4325 | (ch == '_' || ch == '$') || |
duke@435 | 4326 | (not_first_ch && ch >= '0' && ch <= '9')) { |
duke@435 | 4327 | last_is_slash = false; |
duke@435 | 4328 | continue; |
duke@435 | 4329 | } |
duke@435 | 4330 | if (slash_ok && ch == '/') { |
duke@435 | 4331 | if (last_is_slash) { |
duke@435 | 4332 | return NULL; // Don't permit consecutive slashes |
duke@435 | 4333 | } |
duke@435 | 4334 | last_is_slash = true; |
duke@435 | 4335 | continue; |
duke@435 | 4336 | } |
duke@435 | 4337 | } else { |
duke@435 | 4338 | jint unicode_ch; |
duke@435 | 4339 | char* tmp_p = UTF8::next_character(p, &unicode_ch); |
duke@435 | 4340 | p = tmp_p; |
duke@435 | 4341 | last_is_slash = false; |
duke@435 | 4342 | // Check if ch is Java identifier start or is Java identifier part |
duke@435 | 4343 | // 4672820: call java.lang.Character methods directly without generating separate tables. |
duke@435 | 4344 | EXCEPTION_MARK; |
never@1577 | 4345 | instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
duke@435 | 4346 | |
duke@435 | 4347 | // return value |
duke@435 | 4348 | JavaValue result(T_BOOLEAN); |
duke@435 | 4349 | // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart |
duke@435 | 4350 | JavaCallArguments args; |
duke@435 | 4351 | args.push_int(unicode_ch); |
duke@435 | 4352 | |
duke@435 | 4353 | // public static boolean isJavaIdentifierStart(char ch); |
duke@435 | 4354 | JavaCalls::call_static(&result, |
duke@435 | 4355 | klass, |
duke@435 | 4356 | vmSymbolHandles::isJavaIdentifierStart_name(), |
duke@435 | 4357 | vmSymbolHandles::int_bool_signature(), |
duke@435 | 4358 | &args, |
duke@435 | 4359 | THREAD); |
duke@435 | 4360 | |
duke@435 | 4361 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 4362 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 4363 | return 0; |
duke@435 | 4364 | } |
duke@435 | 4365 | if (result.get_jboolean()) { |
duke@435 | 4366 | continue; |
duke@435 | 4367 | } |
duke@435 | 4368 | |
duke@435 | 4369 | if (not_first_ch) { |
duke@435 | 4370 | // public static boolean isJavaIdentifierPart(char ch); |
duke@435 | 4371 | JavaCalls::call_static(&result, |
duke@435 | 4372 | klass, |
duke@435 | 4373 | vmSymbolHandles::isJavaIdentifierPart_name(), |
duke@435 | 4374 | vmSymbolHandles::int_bool_signature(), |
duke@435 | 4375 | &args, |
duke@435 | 4376 | THREAD); |
duke@435 | 4377 | |
duke@435 | 4378 | if (HAS_PENDING_EXCEPTION) { |
duke@435 | 4379 | CLEAR_PENDING_EXCEPTION; |
duke@435 | 4380 | return 0; |
duke@435 | 4381 | } |
duke@435 | 4382 | |
duke@435 | 4383 | if (result.get_jboolean()) { |
duke@435 | 4384 | continue; |
duke@435 | 4385 | } |
duke@435 | 4386 | } |
duke@435 | 4387 | } |
duke@435 | 4388 | return (not_first_ch) ? old_p : NULL; |
duke@435 | 4389 | } |
duke@435 | 4390 | return (not_first_ch) ? p : NULL; |
duke@435 | 4391 | } |
duke@435 | 4392 | |
duke@435 | 4393 | |
duke@435 | 4394 | // Take pointer to a string. Skip over the longest part of the string that could |
duke@435 | 4395 | // be taken as a field signature. Allow "void" if void_ok. |
duke@435 | 4396 | // Return a pointer to just past the signature. |
duke@435 | 4397 | // Return NULL if no legal signature is found. |
duke@435 | 4398 | char* ClassFileParser::skip_over_field_signature(char* signature, |
duke@435 | 4399 | bool void_ok, |
duke@435 | 4400 | unsigned int length, |
duke@435 | 4401 | TRAPS) { |
duke@435 | 4402 | unsigned int array_dim = 0; |
duke@435 | 4403 | while (length > 0) { |
duke@435 | 4404 | switch (signature[0]) { |
duke@435 | 4405 | case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } |
duke@435 | 4406 | case JVM_SIGNATURE_BOOLEAN: |
duke@435 | 4407 | case JVM_SIGNATURE_BYTE: |
duke@435 | 4408 | case JVM_SIGNATURE_CHAR: |
duke@435 | 4409 | case JVM_SIGNATURE_SHORT: |
duke@435 | 4410 | case JVM_SIGNATURE_INT: |
duke@435 | 4411 | case JVM_SIGNATURE_FLOAT: |
duke@435 | 4412 | case JVM_SIGNATURE_LONG: |
duke@435 | 4413 | case JVM_SIGNATURE_DOUBLE: |
duke@435 | 4414 | return signature + 1; |
duke@435 | 4415 | case JVM_SIGNATURE_CLASS: { |
duke@435 | 4416 | if (_major_version < JAVA_1_5_VERSION) { |
duke@435 | 4417 | // Skip over the class name if one is there |
duke@435 | 4418 | char* p = skip_over_field_name(signature + 1, true, --length); |
duke@435 | 4419 | |
duke@435 | 4420 | // The next character better be a semicolon |
duke@435 | 4421 | if (p && (p - signature) > 1 && p[0] == ';') { |
duke@435 | 4422 | return p + 1; |
duke@435 | 4423 | } |
duke@435 | 4424 | } else { |
duke@435 | 4425 | // 4900761: For class version > 48, any unicode is allowed in class name. |
duke@435 | 4426 | length--; |
duke@435 | 4427 | signature++; |
duke@435 | 4428 | while (length > 0 && signature[0] != ';') { |
duke@435 | 4429 | if (signature[0] == '.') { |
duke@435 | 4430 | classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); |
duke@435 | 4431 | } |
duke@435 | 4432 | length--; |
duke@435 | 4433 | signature++; |
duke@435 | 4434 | } |
duke@435 | 4435 | if (signature[0] == ';') { return signature + 1; } |
duke@435 | 4436 | } |
duke@435 | 4437 | |
duke@435 | 4438 | return NULL; |
duke@435 | 4439 | } |
duke@435 | 4440 | case JVM_SIGNATURE_ARRAY: |
duke@435 | 4441 | array_dim++; |
duke@435 | 4442 | if (array_dim > 255) { |
duke@435 | 4443 | // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. |
duke@435 | 4444 | classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); |
duke@435 | 4445 | } |
duke@435 | 4446 | // The rest of what's there better be a legal signature |
duke@435 | 4447 | signature++; |
duke@435 | 4448 | length--; |
duke@435 | 4449 | void_ok = false; |
duke@435 | 4450 | break; |
duke@435 | 4451 | |
duke@435 | 4452 | default: |
duke@435 | 4453 | return NULL; |
duke@435 | 4454 | } |
duke@435 | 4455 | } |
duke@435 | 4456 | return NULL; |
duke@435 | 4457 | } |