Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/classFileParser.cpp @ 6143:8b0a4867acf0
7174218: remove AtomicLongCSImpl intrinsics
Reviewed-by: kvn, twisti
Contributed-by: Krystal Mok <sajia@taobao.com>
author | twisti |
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date | Tue, 12 Jun 2012 14:31:44 -0700 |
parents | 71afdabfd05b |
children | d2a62e0f25eb 8150fa46d2ed 6d8f36bcef55 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classFileParser.hpp" | |
27 #include "classfile/classLoader.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/verificationType.hpp" | |
32 #include "classfile/verifier.hpp" | |
33 #include "classfile/vmSymbols.hpp" | |
34 #include "memory/allocation.hpp" | |
35 #include "memory/gcLocker.hpp" | |
36 #include "memory/oopFactory.hpp" | |
37 #include "memory/universe.inline.hpp" | |
38 #include "oops/constantPoolOop.hpp" | |
3938 | 39 #include "oops/fieldStreams.hpp" |
1972 | 40 #include "oops/instanceKlass.hpp" |
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41 #include "oops/instanceMirrorKlass.hpp" |
1972 | 42 #include "oops/klass.inline.hpp" |
43 #include "oops/klassOop.hpp" | |
44 #include "oops/klassVtable.hpp" | |
45 #include "oops/methodOop.hpp" | |
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46 #include "oops/symbol.hpp" |
1972 | 47 #include "prims/jvmtiExport.hpp" |
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48 #include "prims/jvmtiThreadState.hpp" |
1972 | 49 #include "runtime/javaCalls.hpp" |
50 #include "runtime/perfData.hpp" | |
51 #include "runtime/reflection.hpp" | |
52 #include "runtime/signature.hpp" | |
53 #include "runtime/timer.hpp" | |
54 #include "services/classLoadingService.hpp" | |
55 #include "services/threadService.hpp" | |
0 | 56 |
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57 // We generally try to create the oops directly when parsing, rather than |
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58 // allocating temporary data structures and copying the bytes twice. A |
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59 // temporary area is only needed when parsing utf8 entries in the constant |
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60 // pool and when parsing line number tables. |
0 | 61 |
62 // We add assert in debug mode when class format is not checked. | |
63 | |
64 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
65 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
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66 #define JAVA_MAX_SUPPORTED_VERSION 51 |
0 | 67 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
68 | |
69 // Used for two backward compatibility reasons: | |
70 // - to check for new additions to the class file format in JDK1.5 | |
71 // - to check for bug fixes in the format checker in JDK1.5 | |
72 #define JAVA_1_5_VERSION 49 | |
73 | |
74 // Used for backward compatibility reasons: | |
75 // - to check for javac bug fixes that happened after 1.5 | |
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76 // - also used as the max version when running in jdk6 |
0 | 77 #define JAVA_6_VERSION 50 |
78 | |
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79 // Used for backward compatibility reasons: |
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80 // - to check NameAndType_info signatures more aggressively |
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81 #define JAVA_7_VERSION 51 |
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82 |
0 | 83 |
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84 void ClassFileParser::parse_constant_pool_entries(Handle class_loader, constantPoolHandle cp, int length, TRAPS) { |
0 | 85 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
86 // this function (_current can be allocated in a register, with scalar | |
87 // replacement of aggregates). The _current pointer is copied back to | |
88 // stream() when this function returns. DON'T call another method within | |
89 // this method that uses stream(). | |
90 ClassFileStream* cfs0 = stream(); | |
91 ClassFileStream cfs1 = *cfs0; | |
92 ClassFileStream* cfs = &cfs1; | |
93 #ifdef ASSERT | |
1685 | 94 assert(cfs->allocated_on_stack(),"should be local"); |
0 | 95 u1* old_current = cfs0->current(); |
96 #endif | |
97 | |
98 // Used for batching symbol allocations. | |
99 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
100 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
101 int indices[SymbolTable::symbol_alloc_batch_size]; | |
102 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
103 int names_count = 0; | |
104 | |
105 // parsing Index 0 is unused | |
106 for (int index = 1; index < length; index++) { | |
107 // Each of the following case guarantees one more byte in the stream | |
108 // for the following tag or the access_flags following constant pool, | |
109 // so we don't need bounds-check for reading tag. | |
110 u1 tag = cfs->get_u1_fast(); | |
111 switch (tag) { | |
112 case JVM_CONSTANT_Class : | |
113 { | |
114 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
115 u2 name_index = cfs->get_u2_fast(); | |
116 cp->klass_index_at_put(index, name_index); | |
117 } | |
118 break; | |
119 case JVM_CONSTANT_Fieldref : | |
120 { | |
121 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
122 u2 class_index = cfs->get_u2_fast(); | |
123 u2 name_and_type_index = cfs->get_u2_fast(); | |
124 cp->field_at_put(index, class_index, name_and_type_index); | |
125 } | |
126 break; | |
127 case JVM_CONSTANT_Methodref : | |
128 { | |
129 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
130 u2 class_index = cfs->get_u2_fast(); | |
131 u2 name_and_type_index = cfs->get_u2_fast(); | |
132 cp->method_at_put(index, class_index, name_and_type_index); | |
133 } | |
134 break; | |
135 case JVM_CONSTANT_InterfaceMethodref : | |
136 { | |
137 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
138 u2 class_index = cfs->get_u2_fast(); | |
139 u2 name_and_type_index = cfs->get_u2_fast(); | |
140 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
141 } | |
142 break; | |
143 case JVM_CONSTANT_String : | |
144 { | |
145 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
146 u2 string_index = cfs->get_u2_fast(); | |
147 cp->string_index_at_put(index, string_index); | |
148 } | |
149 break; | |
1602 | 150 case JVM_CONSTANT_MethodHandle : |
151 case JVM_CONSTANT_MethodType : | |
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152 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
1602 | 153 classfile_parse_error( |
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154 "Class file version does not support constant tag %u in class file %s", |
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155 tag, CHECK); |
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156 } |
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157 if (!EnableInvokeDynamic) { |
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158 classfile_parse_error( |
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159 "This JVM does not support constant tag %u in class file %s", |
1602 | 160 tag, CHECK); |
161 } | |
162 if (tag == JVM_CONSTANT_MethodHandle) { | |
163 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
164 u1 ref_kind = cfs->get_u1_fast(); | |
165 u2 method_index = cfs->get_u2_fast(); | |
166 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
167 } else if (tag == JVM_CONSTANT_MethodType) { | |
168 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
169 u2 signature_index = cfs->get_u2_fast(); | |
170 cp->method_type_index_at_put(index, signature_index); | |
171 } else { | |
172 ShouldNotReachHere(); | |
173 } | |
174 break; | |
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175 case JVM_CONSTANT_InvokeDynamic : |
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176 { |
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177 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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178 classfile_parse_error( |
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179 "Class file version does not support constant tag %u in class file %s", |
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180 tag, CHECK); |
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181 } |
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182 if (!EnableInvokeDynamic) { |
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183 classfile_parse_error( |
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184 "This JVM does not support constant tag %u in class file %s", |
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185 tag, CHECK); |
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186 } |
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187 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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188 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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189 u2 name_and_type_index = cfs->get_u2_fast(); |
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190 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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191 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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192 cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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193 } |
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194 break; |
0 | 195 case JVM_CONSTANT_Integer : |
196 { | |
197 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
198 u4 bytes = cfs->get_u4_fast(); | |
199 cp->int_at_put(index, (jint) bytes); | |
200 } | |
201 break; | |
202 case JVM_CONSTANT_Float : | |
203 { | |
204 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
205 u4 bytes = cfs->get_u4_fast(); | |
206 cp->float_at_put(index, *(jfloat*)&bytes); | |
207 } | |
208 break; | |
209 case JVM_CONSTANT_Long : | |
210 // A mangled type might cause you to overrun allocated memory | |
211 guarantee_property(index+1 < length, | |
212 "Invalid constant pool entry %u in class file %s", | |
213 index, CHECK); | |
214 { | |
215 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
216 u8 bytes = cfs->get_u8_fast(); | |
217 cp->long_at_put(index, bytes); | |
218 } | |
219 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
220 break; | |
221 case JVM_CONSTANT_Double : | |
222 // A mangled type might cause you to overrun allocated memory | |
223 guarantee_property(index+1 < length, | |
224 "Invalid constant pool entry %u in class file %s", | |
225 index, CHECK); | |
226 { | |
227 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
228 u8 bytes = cfs->get_u8_fast(); | |
229 cp->double_at_put(index, *(jdouble*)&bytes); | |
230 } | |
231 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
232 break; | |
233 case JVM_CONSTANT_NameAndType : | |
234 { | |
235 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
236 u2 name_index = cfs->get_u2_fast(); | |
237 u2 signature_index = cfs->get_u2_fast(); | |
238 cp->name_and_type_at_put(index, name_index, signature_index); | |
239 } | |
240 break; | |
241 case JVM_CONSTANT_Utf8 : | |
242 { | |
243 cfs->guarantee_more(2, CHECK); // utf8_length | |
244 u2 utf8_length = cfs->get_u2_fast(); | |
245 u1* utf8_buffer = cfs->get_u1_buffer(); | |
246 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
247 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
248 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
249 cfs->skip_u1_fast(utf8_length); | |
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250 |
0 | 251 // Before storing the symbol, make sure it's legal |
252 if (_need_verify) { | |
253 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
254 } | |
255 | |
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256 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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257 Handle patch = clear_cp_patch_at(index); |
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258 guarantee_property(java_lang_String::is_instance(patch()), |
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259 "Illegal utf8 patch at %d in class file %s", |
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260 index, CHECK); |
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261 char* str = java_lang_String::as_utf8_string(patch()); |
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262 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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263 utf8_buffer = (u1*) str; |
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264 utf8_length = (int) strlen(str); |
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265 } |
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266 |
0 | 267 unsigned int hash; |
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268 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
0 | 269 if (result == NULL) { |
270 names[names_count] = (char*)utf8_buffer; | |
271 lengths[names_count] = utf8_length; | |
272 indices[names_count] = index; | |
273 hashValues[names_count++] = hash; | |
274 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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275 SymbolTable::new_symbols(class_loader, cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 276 names_count = 0; |
277 } | |
278 } else { | |
279 cp->symbol_at_put(index, result); | |
280 } | |
281 } | |
282 break; | |
283 default: | |
284 classfile_parse_error( | |
285 "Unknown constant tag %u in class file %s", tag, CHECK); | |
286 break; | |
287 } | |
288 } | |
289 | |
290 // Allocate the remaining symbols | |
291 if (names_count > 0) { | |
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292 SymbolTable::new_symbols(class_loader, cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 293 } |
294 | |
295 // Copy _current pointer of local copy back to stream(). | |
296 #ifdef ASSERT | |
297 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
298 #endif | |
299 cfs0->set_current(cfs1.current()); | |
300 } | |
301 | |
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302 // This class unreferences constant pool symbols if an error has occurred |
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303 // while parsing the class before it is assigned into the class. |
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304 // If it gets an error after that it is unloaded and the constant pool will |
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305 // be cleaned up then. |
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306 class ConstantPoolCleaner : public StackObj { |
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307 constantPoolHandle _cphandle; |
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308 bool _in_error; |
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309 public: |
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310 ConstantPoolCleaner(constantPoolHandle cp) : _cphandle(cp), _in_error(true) {} |
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311 ~ConstantPoolCleaner() { |
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312 if (_in_error && _cphandle.not_null()) { |
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313 _cphandle->unreference_symbols(); |
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314 } |
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315 } |
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316 void set_in_error(bool clean) { _in_error = clean; } |
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317 }; |
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318 |
0 | 319 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
320 | |
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321 constantPoolHandle ClassFileParser::parse_constant_pool(Handle class_loader, TRAPS) { |
0 | 322 ClassFileStream* cfs = stream(); |
323 constantPoolHandle nullHandle; | |
324 | |
325 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
326 u2 length = cfs->get_u2_fast(); | |
327 guarantee_property( | |
328 length >= 1, "Illegal constant pool size %u in class file %s", | |
329 length, CHECK_(nullHandle)); | |
330 constantPoolOop constant_pool = | |
518
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331 oopFactory::new_constantPool(length, |
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332 oopDesc::IsSafeConc, |
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333 CHECK_(nullHandle)); |
0 | 334 constantPoolHandle cp (THREAD, constant_pool); |
335 | |
336 cp->set_partially_loaded(); // Enables heap verify to work on partial constantPoolOops | |
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337 ConstantPoolCleaner cp_in_error(cp); // set constant pool to be cleaned up. |
0 | 338 |
339 // parsing constant pool entries | |
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340 parse_constant_pool_entries(class_loader, cp, length, CHECK_(nullHandle)); |
0 | 341 |
342 int index = 1; // declared outside of loops for portability | |
343 | |
344 // first verification pass - validate cross references and fixup class and string constants | |
345 for (index = 1; index < length; index++) { // Index 0 is unused | |
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346 jbyte tag = cp->tag_at(index).value(); |
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347 switch (tag) { |
0 | 348 case JVM_CONSTANT_Class : |
349 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
350 break; | |
351 case JVM_CONSTANT_Fieldref : | |
352 // fall through | |
353 case JVM_CONSTANT_Methodref : | |
354 // fall through | |
355 case JVM_CONSTANT_InterfaceMethodref : { | |
356 if (!_need_verify) break; | |
357 int klass_ref_index = cp->klass_ref_index_at(index); | |
358 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
359 check_property(valid_cp_range(klass_ref_index, length) && | |
431
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360 is_klass_reference(cp, klass_ref_index), |
0 | 361 "Invalid constant pool index %u in class file %s", |
362 klass_ref_index, | |
363 CHECK_(nullHandle)); | |
364 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
365 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
366 "Invalid constant pool index %u in class file %s", | |
367 name_and_type_ref_index, | |
368 CHECK_(nullHandle)); | |
369 break; | |
370 } | |
371 case JVM_CONSTANT_String : | |
372 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
373 break; | |
374 case JVM_CONSTANT_Integer : | |
375 break; | |
376 case JVM_CONSTANT_Float : | |
377 break; | |
378 case JVM_CONSTANT_Long : | |
379 case JVM_CONSTANT_Double : | |
380 index++; | |
381 check_property( | |
382 (index < length && cp->tag_at(index).is_invalid()), | |
383 "Improper constant pool long/double index %u in class file %s", | |
384 index, CHECK_(nullHandle)); | |
385 break; | |
386 case JVM_CONSTANT_NameAndType : { | |
387 if (!_need_verify) break; | |
388 int name_ref_index = cp->name_ref_index_at(index); | |
389 int signature_ref_index = cp->signature_ref_index_at(index); | |
390 check_property( | |
391 valid_cp_range(name_ref_index, length) && | |
392 cp->tag_at(name_ref_index).is_utf8(), | |
393 "Invalid constant pool index %u in class file %s", | |
394 name_ref_index, CHECK_(nullHandle)); | |
395 check_property( | |
396 valid_cp_range(signature_ref_index, length) && | |
397 cp->tag_at(signature_ref_index).is_utf8(), | |
398 "Invalid constant pool index %u in class file %s", | |
399 signature_ref_index, CHECK_(nullHandle)); | |
400 break; | |
401 } | |
402 case JVM_CONSTANT_Utf8 : | |
403 break; | |
404 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
405 case JVM_CONSTANT_UnresolvedClassInError: | |
406 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
407 break; | |
408 case JVM_CONSTANT_ClassIndex : | |
409 { | |
410 int class_index = cp->klass_index_at(index); | |
411 check_property( | |
412 valid_cp_range(class_index, length) && | |
413 cp->tag_at(class_index).is_utf8(), | |
414 "Invalid constant pool index %u in class file %s", | |
415 class_index, CHECK_(nullHandle)); | |
416 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
417 } | |
418 break; | |
419 case JVM_CONSTANT_UnresolvedString : | |
420 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
421 break; | |
422 case JVM_CONSTANT_StringIndex : | |
423 { | |
424 int string_index = cp->string_index_at(index); | |
425 check_property( | |
426 valid_cp_range(string_index, length) && | |
427 cp->tag_at(string_index).is_utf8(), | |
428 "Invalid constant pool index %u in class file %s", | |
429 string_index, CHECK_(nullHandle)); | |
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430 Symbol* sym = cp->symbol_at(string_index); |
0 | 431 cp->unresolved_string_at_put(index, sym); |
432 } | |
433 break; | |
1602 | 434 case JVM_CONSTANT_MethodHandle : |
435 { | |
436 int ref_index = cp->method_handle_index_at(index); | |
437 check_property( | |
438 valid_cp_range(ref_index, length) && | |
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439 EnableInvokeDynamic, |
1602 | 440 "Invalid constant pool index %u in class file %s", |
441 ref_index, CHECK_(nullHandle)); | |
442 constantTag tag = cp->tag_at(ref_index); | |
443 int ref_kind = cp->method_handle_ref_kind_at(index); | |
444 switch (ref_kind) { | |
445 case JVM_REF_getField: | |
446 case JVM_REF_getStatic: | |
447 case JVM_REF_putField: | |
448 case JVM_REF_putStatic: | |
449 check_property( | |
450 tag.is_field(), | |
451 "Invalid constant pool index %u in class file %s (not a field)", | |
452 ref_index, CHECK_(nullHandle)); | |
453 break; | |
454 case JVM_REF_invokeVirtual: | |
455 case JVM_REF_invokeStatic: | |
456 case JVM_REF_invokeSpecial: | |
457 case JVM_REF_newInvokeSpecial: | |
458 check_property( | |
459 tag.is_method(), | |
460 "Invalid constant pool index %u in class file %s (not a method)", | |
461 ref_index, CHECK_(nullHandle)); | |
462 break; | |
463 case JVM_REF_invokeInterface: | |
464 check_property( | |
465 tag.is_interface_method(), | |
466 "Invalid constant pool index %u in class file %s (not an interface method)", | |
467 ref_index, CHECK_(nullHandle)); | |
468 break; | |
469 default: | |
470 classfile_parse_error( | |
471 "Bad method handle kind at constant pool index %u in class file %s", | |
472 index, CHECK_(nullHandle)); | |
473 } | |
474 // Keep the ref_index unchanged. It will be indirected at link-time. | |
475 } | |
476 break; | |
477 case JVM_CONSTANT_MethodType : | |
478 { | |
479 int ref_index = cp->method_type_index_at(index); | |
480 check_property( | |
481 valid_cp_range(ref_index, length) && | |
482 cp->tag_at(ref_index).is_utf8() && | |
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483 EnableInvokeDynamic, |
1602 | 484 "Invalid constant pool index %u in class file %s", |
485 ref_index, CHECK_(nullHandle)); | |
486 } | |
487 break; | |
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488 case JVM_CONSTANT_InvokeDynamic : |
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489 { |
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490 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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491 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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492 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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493 "Invalid constant pool index %u in class file %s", |
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494 name_and_type_ref_index, |
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495 CHECK_(nullHandle)); |
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496 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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497 break; |
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498 } |
0 | 499 default: |
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500 fatal(err_msg("bad constant pool tag value %u", |
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501 cp->tag_at(index).value())); |
0 | 502 ShouldNotReachHere(); |
503 break; | |
504 } // end of switch | |
505 } // end of for | |
506 | |
431
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507 if (_cp_patches != NULL) { |
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508 // need to treat this_class specially... |
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509 assert(EnableInvokeDynamic, ""); |
431
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510 int this_class_index; |
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511 { |
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512 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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513 u1* mark = cfs->current(); |
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514 u2 flags = cfs->get_u2_fast(); |
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515 this_class_index = cfs->get_u2_fast(); |
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516 cfs->set_current(mark); // revert to mark |
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517 } |
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518 |
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519 for (index = 1; index < length; index++) { // Index 0 is unused |
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520 if (has_cp_patch_at(index)) { |
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521 guarantee_property(index != this_class_index, |
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522 "Illegal constant pool patch to self at %d in class file %s", |
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523 index, CHECK_(nullHandle)); |
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524 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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525 } |
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526 } |
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527 // Ensure that all the patches have been used. |
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528 for (index = 0; index < _cp_patches->length(); index++) { |
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529 guarantee_property(!has_cp_patch_at(index), |
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530 "Unused constant pool patch at %d in class file %s", |
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531 index, CHECK_(nullHandle)); |
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532 } |
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533 } |
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534 |
0 | 535 if (!_need_verify) { |
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536 cp_in_error.set_in_error(false); |
0 | 537 return cp; |
538 } | |
539 | |
540 // second verification pass - checks the strings are of the right format. | |
431
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541 // but not yet to the other entries |
0 | 542 for (index = 1; index < length; index++) { |
543 jbyte tag = cp->tag_at(index).value(); | |
544 switch (tag) { | |
545 case JVM_CONSTANT_UnresolvedClass: { | |
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546 Symbol* class_name = cp->unresolved_klass_at(index); |
431
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547 // check the name, even if _cp_patches will overwrite it |
0 | 548 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
549 break; | |
550 } | |
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551 case JVM_CONSTANT_NameAndType: { |
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552 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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553 int sig_index = cp->signature_ref_index_at(index); |
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554 int name_index = cp->name_ref_index_at(index); |
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555 Symbol* name = cp->symbol_at(name_index); |
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556 Symbol* sig = cp->symbol_at(sig_index); |
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557 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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558 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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559 } else { |
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560 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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561 } |
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562 } |
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563 break; |
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564 } |
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565 case JVM_CONSTANT_InvokeDynamic: |
0 | 566 case JVM_CONSTANT_Fieldref: |
567 case JVM_CONSTANT_Methodref: | |
568 case JVM_CONSTANT_InterfaceMethodref: { | |
569 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
570 // already verified to be utf8 | |
571 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
572 // already verified to be utf8 | |
573 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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574 Symbol* name = cp->symbol_at(name_ref_index); |
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575 Symbol* signature = cp->symbol_at(signature_ref_index); |
0 | 576 if (tag == JVM_CONSTANT_Fieldref) { |
577 verify_legal_field_name(name, CHECK_(nullHandle)); | |
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578 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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579 // Signature is verified above, when iterating NameAndType_info. |
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580 // Need only to be sure it's the right type. |
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581 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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582 throwIllegalSignature( |
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583 "Field", name, signature, CHECK_(nullHandle)); |
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584 } |
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585 } else { |
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586 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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587 } |
0 | 588 } else { |
589 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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590 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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591 // Signature is verified above, when iterating NameAndType_info. |
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592 // Need only to be sure it's the right type. |
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593 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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594 throwIllegalSignature( |
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595 "Method", name, signature, CHECK_(nullHandle)); |
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596 } |
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597 } else { |
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598 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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599 } |
0 | 600 if (tag == JVM_CONSTANT_Methodref) { |
601 // 4509014: If a class method name begins with '<', it must be "<init>". | |
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602 assert(name != NULL, "method name in constant pool is null"); |
0 | 603 unsigned int name_len = name->utf8_length(); |
604 assert(name_len > 0, "bad method name"); // already verified as legal name | |
605 if (name->byte_at(0) == '<') { | |
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606 if (name != vmSymbols::object_initializer_name()) { |
0 | 607 classfile_parse_error( |
608 "Bad method name at constant pool index %u in class file %s", | |
609 name_ref_index, CHECK_(nullHandle)); | |
610 } | |
611 } | |
612 } | |
613 } | |
614 break; | |
615 } | |
1602 | 616 case JVM_CONSTANT_MethodHandle: { |
617 int ref_index = cp->method_handle_index_at(index); | |
618 int ref_kind = cp->method_handle_ref_kind_at(index); | |
619 switch (ref_kind) { | |
620 case JVM_REF_invokeVirtual: | |
621 case JVM_REF_invokeStatic: | |
622 case JVM_REF_invokeSpecial: | |
623 case JVM_REF_newInvokeSpecial: | |
624 { | |
625 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
626 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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627 Symbol* name = cp->symbol_at(name_ref_index); |
1602 | 628 if (ref_kind == JVM_REF_newInvokeSpecial) { |
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629 if (name != vmSymbols::object_initializer_name()) { |
1602 | 630 classfile_parse_error( |
631 "Bad constructor name at constant pool index %u in class file %s", | |
632 name_ref_index, CHECK_(nullHandle)); | |
633 } | |
634 } else { | |
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635 if (name == vmSymbols::object_initializer_name()) { |
1602 | 636 classfile_parse_error( |
637 "Bad method name at constant pool index %u in class file %s", | |
638 name_ref_index, CHECK_(nullHandle)); | |
639 } | |
640 } | |
641 } | |
642 break; | |
643 // Other ref_kinds are already fully checked in previous pass. | |
644 } | |
645 break; | |
646 } | |
647 case JVM_CONSTANT_MethodType: { | |
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648 Symbol* no_name = vmSymbols::type_name(); // place holder |
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649 Symbol* signature = cp->method_type_signature_at(index); |
1602 | 650 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
651 break; | |
652 } | |
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653 case JVM_CONSTANT_Utf8: { |
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654 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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655 } |
0 | 656 } // end of switch |
657 } // end of for | |
658 | |
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659 cp_in_error.set_in_error(false); |
0 | 660 return cp; |
661 } | |
662 | |
663 | |
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664 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
2416
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665 assert(EnableInvokeDynamic, ""); |
431
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666 BasicType patch_type = T_VOID; |
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667 switch (cp->tag_at(index).value()) { |
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668 |
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669 case JVM_CONSTANT_UnresolvedClass : |
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670 // Patching a class means pre-resolving it. |
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671 // The name in the constant pool is ignored. |
1602 | 672 if (java_lang_Class::is_instance(patch())) { |
431
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673 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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674 "Illegal class patch at %d in class file %s", |
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675 index, CHECK); |
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676 cp->klass_at_put(index, java_lang_Class::as_klassOop(patch())); |
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677 } else { |
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678 guarantee_property(java_lang_String::is_instance(patch()), |
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679 "Illegal class patch at %d in class file %s", |
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680 index, CHECK); |
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681 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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682 cp->unresolved_klass_at_put(index, name); |
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683 } |
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684 break; |
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685 |
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686 case JVM_CONSTANT_UnresolvedString : |
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687 // Patching a string means pre-resolving it. |
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688 // The spelling in the constant pool is ignored. |
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689 // The constant reference may be any object whatever. |
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690 // If it is not a real interned string, the constant is referred |
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691 // to as a "pseudo-string", and must be presented to the CP |
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692 // explicitly, because it may require scavenging. |
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693 cp->pseudo_string_at_put(index, patch()); |
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694 break; |
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695 |
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696 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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697 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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698 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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699 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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700 patch_prim: |
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701 { |
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702 jvalue value; |
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703 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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704 guarantee_property(value_type == patch_type, |
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705 "Illegal primitive patch at %d in class file %s", |
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706 index, CHECK); |
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707 switch (value_type) { |
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708 case T_INT: cp->int_at_put(index, value.i); break; |
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709 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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710 case T_LONG: cp->long_at_put(index, value.j); break; |
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711 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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712 default: assert(false, ""); |
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713 } |
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714 } |
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715 break; |
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716 |
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717 default: |
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718 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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719 guarantee_property(!has_cp_patch_at(index), |
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720 "Illegal unexpected patch at %d in class file %s", |
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721 index, CHECK); |
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722 return; |
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723 } |
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724 |
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725 // On fall-through, mark the patch as used. |
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726 clear_cp_patch_at(index); |
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727 } |
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728 |
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729 |
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730 |
0 | 731 class NameSigHash: public ResourceObj { |
732 public: | |
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733 Symbol* _name; // name |
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734 Symbol* _sig; // signature |
0 | 735 NameSigHash* _next; // Next entry in hash table |
736 }; | |
737 | |
738 | |
739 #define HASH_ROW_SIZE 256 | |
740 | |
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741 unsigned int hash(Symbol* name, Symbol* sig) { |
0 | 742 unsigned int raw_hash = 0; |
743 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
744 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
745 | |
746 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
747 } | |
748 | |
749 | |
750 void initialize_hashtable(NameSigHash** table) { | |
751 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
752 } | |
753 | |
754 // Return false if the name/sig combination is found in table. | |
755 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
756 // The old format checker uses heap sort to find duplicates. | |
757 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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758 // of table since we don't expect Symbol*'s to move. |
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759 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
0 | 760 assert(name != NULL, "name in constant pool is NULL"); |
761 | |
762 // First lookup for duplicates | |
763 int index = hash(name, sig); | |
764 NameSigHash* entry = table[index]; | |
765 while (entry != NULL) { | |
766 if (entry->_name == name && entry->_sig == sig) { | |
767 return false; | |
768 } | |
769 entry = entry->_next; | |
770 } | |
771 | |
772 // No duplicate is found, allocate a new entry and fill it. | |
773 entry = new NameSigHash(); | |
774 entry->_name = name; | |
775 entry->_sig = sig; | |
776 | |
777 // Insert into hash table | |
778 entry->_next = table[index]; | |
779 table[index] = entry; | |
780 | |
781 return true; | |
782 } | |
783 | |
784 | |
785 objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp, | |
786 int length, | |
787 Handle class_loader, | |
788 Handle protection_domain, | |
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789 Symbol* class_name, |
0 | 790 TRAPS) { |
791 ClassFileStream* cfs = stream(); | |
792 assert(length > 0, "only called for length>0"); | |
793 objArrayHandle nullHandle; | |
794 objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
795 objArrayHandle interfaces (THREAD, interface_oop); | |
796 | |
797 int index; | |
798 for (index = 0; index < length; index++) { | |
799 u2 interface_index = cfs->get_u2(CHECK_(nullHandle)); | |
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800 KlassHandle interf; |
0 | 801 check_property( |
802 valid_cp_range(interface_index, cp->length()) && | |
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803 is_klass_reference(cp, interface_index), |
0 | 804 "Interface name has bad constant pool index %u in class file %s", |
805 interface_index, CHECK_(nullHandle)); | |
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806 if (cp->tag_at(interface_index).is_klass()) { |
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807 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
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808 } else { |
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809 Symbol* unresolved_klass = cp->klass_name_at(interface_index); |
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810 |
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811 // Don't need to check legal name because it's checked when parsing constant pool. |
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812 // But need to make sure it's not an array type. |
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813 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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814 "Bad interface name in class file %s", CHECK_(nullHandle)); |
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815 |
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816 // Call resolve_super so classcircularity is checked |
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817 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, |
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818 unresolved_klass, class_loader, protection_domain, |
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819 false, CHECK_(nullHandle)); |
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820 interf = KlassHandle(THREAD, k); |
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821 |
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822 if (LinkWellKnownClasses) // my super type is well known to me |
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823 cp->klass_at_put(interface_index, interf()); // eagerly resolve |
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824 } |
0 | 825 |
826 if (!Klass::cast(interf())->is_interface()) { | |
827 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle); | |
828 } | |
829 interfaces->obj_at_put(index, interf()); | |
830 } | |
831 | |
832 if (!_need_verify || length <= 1) { | |
833 return interfaces; | |
834 } | |
835 | |
836 // Check if there's any duplicates in interfaces | |
837 ResourceMark rm(THREAD); | |
838 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
839 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
840 initialize_hashtable(interface_names); | |
841 bool dup = false; | |
842 { | |
843 debug_only(No_Safepoint_Verifier nsv;) | |
844 for (index = 0; index < length; index++) { | |
845 klassOop k = (klassOop)interfaces->obj_at(index); | |
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846 Symbol* name = instanceKlass::cast(k)->name(); |
0 | 847 // If no duplicates, add (name, NULL) in hashtable interface_names. |
848 if (!put_after_lookup(name, NULL, interface_names)) { | |
849 dup = true; | |
850 break; | |
851 } | |
852 } | |
853 } | |
854 if (dup) { | |
855 classfile_parse_error("Duplicate interface name in class file %s", | |
856 CHECK_(nullHandle)); | |
857 } | |
858 | |
859 return interfaces; | |
860 } | |
861 | |
862 | |
863 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
864 // Make sure the constant pool entry is of a type appropriate to this field | |
865 guarantee_property( | |
866 (constantvalue_index > 0 && | |
867 constantvalue_index < cp->length()), | |
868 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
869 constantvalue_index, CHECK); | |
870 constantTag value_type = cp->tag_at(constantvalue_index); | |
871 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
872 case T_LONG: | |
873 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
874 break; | |
875 case T_FLOAT: | |
876 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
877 break; | |
878 case T_DOUBLE: | |
879 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
880 break; | |
881 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
882 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
883 break; | |
884 case T_OBJECT: | |
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885 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
0 | 886 && (value_type.is_string() || value_type.is_unresolved_string())), |
887 "Bad string initial value in class file %s", CHECK); | |
888 break; | |
889 default: | |
890 classfile_parse_error( | |
891 "Unable to set initial value %u in class file %s", | |
892 constantvalue_index, CHECK); | |
893 } | |
894 } | |
895 | |
896 | |
897 // Parse attributes for a field. | |
898 void ClassFileParser::parse_field_attributes(constantPoolHandle cp, | |
899 u2 attributes_count, | |
900 bool is_static, u2 signature_index, | |
901 u2* constantvalue_index_addr, | |
902 bool* is_synthetic_addr, | |
903 u2* generic_signature_index_addr, | |
904 typeArrayHandle* field_annotations, | |
905 TRAPS) { | |
906 ClassFileStream* cfs = stream(); | |
907 assert(attributes_count > 0, "length should be greater than 0"); | |
908 u2 constantvalue_index = 0; | |
909 u2 generic_signature_index = 0; | |
910 bool is_synthetic = false; | |
911 u1* runtime_visible_annotations = NULL; | |
912 int runtime_visible_annotations_length = 0; | |
913 u1* runtime_invisible_annotations = NULL; | |
914 int runtime_invisible_annotations_length = 0; | |
915 while (attributes_count--) { | |
916 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
917 u2 attribute_name_index = cfs->get_u2_fast(); | |
918 u4 attribute_length = cfs->get_u4_fast(); | |
919 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
920 cp->tag_at(attribute_name_index).is_utf8(), | |
921 "Invalid field attribute index %u in class file %s", | |
922 attribute_name_index, | |
923 CHECK); | |
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924 Symbol* attribute_name = cp->symbol_at(attribute_name_index); |
0 | 925 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
926 // ignore if non-static | |
927 if (constantvalue_index != 0) { | |
928 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
929 } | |
930 check_property( | |
931 attribute_length == 2, | |
932 "Invalid ConstantValue field attribute length %u in class file %s", | |
933 attribute_length, CHECK); | |
934 constantvalue_index = cfs->get_u2(CHECK); | |
935 if (_need_verify) { | |
936 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
937 } | |
938 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
939 if (attribute_length != 0) { | |
940 classfile_parse_error( | |
941 "Invalid Synthetic field attribute length %u in class file %s", | |
942 attribute_length, CHECK); | |
943 } | |
944 is_synthetic = true; | |
945 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
946 if (attribute_length != 0) { | |
947 classfile_parse_error( | |
948 "Invalid Deprecated field attribute length %u in class file %s", | |
949 attribute_length, CHECK); | |
950 } | |
951 } else if (_major_version >= JAVA_1_5_VERSION) { | |
952 if (attribute_name == vmSymbols::tag_signature()) { | |
953 if (attribute_length != 2) { | |
954 classfile_parse_error( | |
955 "Wrong size %u for field's Signature attribute in class file %s", | |
956 attribute_length, CHECK); | |
957 } | |
958 generic_signature_index = cfs->get_u2(CHECK); | |
959 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
960 runtime_visible_annotations_length = attribute_length; | |
961 runtime_visible_annotations = cfs->get_u1_buffer(); | |
962 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
963 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
964 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
965 runtime_invisible_annotations_length = attribute_length; | |
966 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
967 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
968 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
969 } else { | |
970 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
971 } | |
972 } else { | |
973 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
974 } | |
975 } | |
976 | |
977 *constantvalue_index_addr = constantvalue_index; | |
978 *is_synthetic_addr = is_synthetic; | |
979 *generic_signature_index_addr = generic_signature_index; | |
980 *field_annotations = assemble_annotations(runtime_visible_annotations, | |
981 runtime_visible_annotations_length, | |
982 runtime_invisible_annotations, | |
983 runtime_invisible_annotations_length, | |
984 CHECK); | |
985 return; | |
986 } | |
987 | |
988 | |
989 // Field allocation types. Used for computing field offsets. | |
990 | |
991 enum FieldAllocationType { | |
992 STATIC_OOP, // Oops | |
993 STATIC_BYTE, // Boolean, Byte, char | |
994 STATIC_SHORT, // shorts | |
995 STATIC_WORD, // ints | |
3938 | 996 STATIC_DOUBLE, // aligned long or double |
0 | 997 NONSTATIC_OOP, |
998 NONSTATIC_BYTE, | |
999 NONSTATIC_SHORT, | |
1000 NONSTATIC_WORD, | |
1001 NONSTATIC_DOUBLE, | |
3938 | 1002 MAX_FIELD_ALLOCATION_TYPE, |
1003 BAD_ALLOCATION_TYPE = -1 | |
0 | 1004 }; |
1005 | |
3938 | 1006 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
1007 BAD_ALLOCATION_TYPE, // 0 | |
1008 BAD_ALLOCATION_TYPE, // 1 | |
1009 BAD_ALLOCATION_TYPE, // 2 | |
1010 BAD_ALLOCATION_TYPE, // 3 | |
1011 NONSTATIC_BYTE , // T_BOOLEAN = 4, | |
1012 NONSTATIC_SHORT, // T_CHAR = 5, | |
1013 NONSTATIC_WORD, // T_FLOAT = 6, | |
1014 NONSTATIC_DOUBLE, // T_DOUBLE = 7, | |
1015 NONSTATIC_BYTE, // T_BYTE = 8, | |
1016 NONSTATIC_SHORT, // T_SHORT = 9, | |
1017 NONSTATIC_WORD, // T_INT = 10, | |
1018 NONSTATIC_DOUBLE, // T_LONG = 11, | |
1019 NONSTATIC_OOP, // T_OBJECT = 12, | |
1020 NONSTATIC_OOP, // T_ARRAY = 13, | |
1021 BAD_ALLOCATION_TYPE, // T_VOID = 14, | |
1022 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, | |
1023 BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16, | |
1024 BAD_ALLOCATION_TYPE, // T_CONFLICT = 17, | |
1025 BAD_ALLOCATION_TYPE, // 0 | |
1026 BAD_ALLOCATION_TYPE, // 1 | |
1027 BAD_ALLOCATION_TYPE, // 2 | |
1028 BAD_ALLOCATION_TYPE, // 3 | |
1029 STATIC_BYTE , // T_BOOLEAN = 4, | |
1030 STATIC_SHORT, // T_CHAR = 5, | |
1031 STATIC_WORD, // T_FLOAT = 6, | |
1032 STATIC_DOUBLE, // T_DOUBLE = 7, | |
1033 STATIC_BYTE, // T_BYTE = 8, | |
1034 STATIC_SHORT, // T_SHORT = 9, | |
1035 STATIC_WORD, // T_INT = 10, | |
1036 STATIC_DOUBLE, // T_LONG = 11, | |
1037 STATIC_OOP, // T_OBJECT = 12, | |
1038 STATIC_OOP, // T_ARRAY = 13, | |
1039 BAD_ALLOCATION_TYPE, // T_VOID = 14, | |
1040 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, | |
1041 BAD_ALLOCATION_TYPE, // T_NARROWOOP= 16, | |
1042 BAD_ALLOCATION_TYPE, // T_CONFLICT = 17, | |
0 | 1043 }; |
1044 | |
3938 | 1045 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
1046 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
1047 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
1048 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
1049 return result; | |
1050 } | |
1051 | |
1052 class FieldAllocationCount: public ResourceObj { | |
1053 public: | |
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1054 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
3938 | 1055 |
1056 FieldAllocationCount() { | |
1057 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
1058 count[i] = 0; | |
1059 } | |
1060 } | |
1061 | |
1062 FieldAllocationType update(bool is_static, BasicType type) { | |
1063 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1064 // Make sure there is no overflow with injected fields. |
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1065 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
3938 | 1066 count[atype]++; |
1067 return atype; | |
1068 } | |
1069 }; | |
1070 | |
1071 | |
1072 typeArrayHandle ClassFileParser::parse_fields(Symbol* class_name, | |
1073 constantPoolHandle cp, bool is_interface, | |
1074 FieldAllocationCount *fac, | |
1075 objArrayHandle* fields_annotations, | |
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1076 u2* java_fields_count_ptr, TRAPS) { |
0 | 1077 ClassFileStream* cfs = stream(); |
1078 typeArrayHandle nullHandle; | |
1079 cfs->guarantee_more(2, CHECK_(nullHandle)); // length | |
1080 u2 length = cfs->get_u2_fast(); | |
3938 | 1081 *java_fields_count_ptr = length; |
1082 | |
1083 int num_injected = 0; | |
1084 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1085 int total_fields = length + num_injected; |
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1086 |
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1087 // The field array starts with tuples of shorts |
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1088 // [access, name index, sig index, initial value index, byte offset]. |
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1089 // A generic signature slot only exists for field with generic |
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1090 // signature attribute. And the access flag is set with |
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1091 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1092 // signature slots are at the end of the field array and after all |
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1093 // other fields data. |
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1094 // |
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1095 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1096 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1097 // ... |
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1098 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1099 // [generic signature index] |
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1100 // [generic signature index] |
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1101 // ... |
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1102 // |
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1103 // Allocate a temporary resource array for field data. For each field, |
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1104 // a slot is reserved in the temporary array for the generic signature |
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1105 // index. After parsing all fields, the data are copied to a permanent |
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1106 // array and any unused slots will be discarded. |
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1107 ResourceMark rm(THREAD); |
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1108 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1109 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
0 | 1110 |
1111 typeArrayHandle field_annotations; | |
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1112 // The generic signature slots start after all other fields' data. |
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1113 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1114 int num_generic_signature = 0; |
0 | 1115 for (int n = 0; n < length; n++) { |
1116 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1117 | |
1118 AccessFlags access_flags; | |
1119 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
1120 verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle)); | |
1121 access_flags.set_flags(flags); | |
1122 | |
1123 u2 name_index = cfs->get_u2_fast(); | |
1124 int cp_size = cp->length(); | |
1125 check_property( | |
1126 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
1127 "Invalid constant pool index %u for field name in class file %s", | |
1128 name_index, CHECK_(nullHandle)); | |
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1129 Symbol* name = cp->symbol_at(name_index); |
0 | 1130 verify_legal_field_name(name, CHECK_(nullHandle)); |
1131 | |
1132 u2 signature_index = cfs->get_u2_fast(); | |
1133 check_property( | |
1134 valid_cp_range(signature_index, cp_size) && | |
1135 cp->tag_at(signature_index).is_utf8(), | |
1136 "Invalid constant pool index %u for field signature in class file %s", | |
1137 signature_index, CHECK_(nullHandle)); | |
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1138 Symbol* sig = cp->symbol_at(signature_index); |
0 | 1139 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
1140 | |
1141 u2 constantvalue_index = 0; | |
1142 bool is_synthetic = false; | |
1143 u2 generic_signature_index = 0; | |
1144 bool is_static = access_flags.is_static(); | |
1145 | |
1146 u2 attributes_count = cfs->get_u2_fast(); | |
1147 if (attributes_count > 0) { | |
1148 parse_field_attributes(cp, attributes_count, is_static, signature_index, | |
1149 &constantvalue_index, &is_synthetic, | |
1150 &generic_signature_index, &field_annotations, | |
1151 CHECK_(nullHandle)); | |
1152 if (field_annotations.not_null()) { | |
1153 if (fields_annotations->is_null()) { | |
1154 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
1155 *fields_annotations = objArrayHandle(THREAD, md); | |
1156 } | |
1157 (*fields_annotations)->obj_at_put(n, field_annotations()); | |
1158 } | |
1159 if (is_synthetic) { | |
1160 access_flags.set_is_synthetic(); | |
1161 } | |
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1162 if (generic_signature_index != 0) { |
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1163 access_flags.set_field_has_generic_signature(); |
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1164 fa[generic_signature_slot] = generic_signature_index; |
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1165 generic_signature_slot ++; |
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1166 num_generic_signature ++; |
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1167 } |
0 | 1168 } |
1169 | |
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1170 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
3938 | 1171 field->initialize(access_flags.as_short(), |
1172 name_index, | |
1173 signature_index, | |
1174 constantvalue_index, | |
1175 0); | |
1176 | |
1177 BasicType type = cp->basic_type_for_signature_at(signature_index); | |
0 | 1178 |
1179 // Remember how many oops we encountered and compute allocation type | |
3938 | 1180 FieldAllocationType atype = fac->update(is_static, type); |
0 | 1181 |
1182 // The correct offset is computed later (all oop fields will be located together) | |
1183 // We temporarily store the allocation type in the offset field | |
3938 | 1184 field->set_offset(atype); |
1185 } | |
1186 | |
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1187 int index = length; |
3938 | 1188 if (num_injected != 0) { |
1189 for (int n = 0; n < num_injected; n++) { | |
1190 // Check for duplicates | |
1191 if (injected[n].may_be_java) { | |
1192 Symbol* name = injected[n].name(); | |
1193 Symbol* signature = injected[n].signature(); | |
1194 bool duplicate = false; | |
1195 for (int i = 0; i < length; i++) { | |
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1196 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
3938 | 1197 if (name == cp->symbol_at(f->name_index()) && |
1198 signature == cp->symbol_at(f->signature_index())) { | |
1199 // Symbol is desclared in Java so skip this one | |
1200 duplicate = true; | |
1201 break; | |
1202 } | |
1203 } | |
1204 if (duplicate) { | |
1205 // These will be removed from the field array at the end | |
1206 continue; | |
1207 } | |
1208 } | |
1209 | |
1210 // Injected field | |
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1211 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
3938 | 1212 field->initialize(JVM_ACC_FIELD_INTERNAL, |
1213 injected[n].name_index, | |
1214 injected[n].signature_index, | |
1215 0, | |
1216 0); | |
1217 | |
1218 BasicType type = FieldType::basic_type(injected[n].signature()); | |
1219 | |
1220 // Remember how many oops we encountered and compute allocation type | |
1221 FieldAllocationType atype = fac->update(false, type); | |
1222 | |
1223 // The correct offset is computed later (all oop fields will be located together) | |
1224 // We temporarily store the allocation type in the offset field | |
1225 field->set_offset(atype); | |
1226 index++; | |
1227 } | |
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1228 } |
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1229 |
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1230 // Now copy the fields' data from the temporary resource array. |
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1231 // Sometimes injected fields already exist in the Java source so |
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1232 // the fields array could be too long. In that case the |
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1233 // fields array is trimed. Also unused slots that were reserved |
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1234 // for generic signature indexes are discarded. |
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1235 typeArrayOop new_fields = oopFactory::new_permanent_shortArray( |
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1236 index * FieldInfo::field_slots + num_generic_signature, |
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1237 CHECK_(nullHandle)); |
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1238 typeArrayHandle fields(THREAD, new_fields); |
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1239 { |
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1240 int i = 0; |
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1241 for (; i < index * FieldInfo::field_slots; i++) { |
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1242 new_fields->short_at_put(i, fa[i]); |
3938 | 1243 } |
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1244 for (int j = total_fields * FieldInfo::field_slots; |
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1245 j < generic_signature_slot; j++) { |
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1246 new_fields->short_at_put(i++, fa[j]); |
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1247 } |
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1248 assert(i == new_fields->length(), ""); |
0 | 1249 } |
1250 | |
1251 if (_need_verify && length > 1) { | |
1252 // Check duplicated fields | |
1253 ResourceMark rm(THREAD); | |
1254 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1255 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
1256 initialize_hashtable(names_and_sigs); | |
1257 bool dup = false; | |
1258 { | |
1259 debug_only(No_Safepoint_Verifier nsv;) | |
3938 | 1260 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
1261 Symbol* name = fs.name(); | |
1262 Symbol* sig = fs.signature(); | |
0 | 1263 // If no duplicates, add name/signature in hashtable names_and_sigs. |
1264 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
1265 dup = true; | |
1266 break; | |
1267 } | |
1268 } | |
1269 } | |
1270 if (dup) { | |
1271 classfile_parse_error("Duplicate field name&signature in class file %s", | |
1272 CHECK_(nullHandle)); | |
1273 } | |
1274 } | |
1275 | |
1276 return fields; | |
1277 } | |
1278 | |
1279 | |
1280 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
1281 while (length-- > 0) { | |
1282 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
1283 } | |
1284 } | |
1285 | |
1286 | |
1287 typeArrayHandle ClassFileParser::parse_exception_table(u4 code_length, | |
1288 u4 exception_table_length, | |
1289 constantPoolHandle cp, | |
1290 TRAPS) { | |
1291 ClassFileStream* cfs = stream(); | |
1292 typeArrayHandle nullHandle; | |
1293 | |
1294 // 4-tuples of ints [start_pc, end_pc, handler_pc, catch_type index] | |
1295 typeArrayOop eh = oopFactory::new_permanent_intArray(exception_table_length*4, CHECK_(nullHandle)); | |
1296 typeArrayHandle exception_handlers = typeArrayHandle(THREAD, eh); | |
1297 | |
1298 int index = 0; | |
1299 cfs->guarantee_more(8 * exception_table_length, CHECK_(nullHandle)); // start_pc, end_pc, handler_pc, catch_type_index | |
1300 for (unsigned int i = 0; i < exception_table_length; i++) { | |
1301 u2 start_pc = cfs->get_u2_fast(); | |
1302 u2 end_pc = cfs->get_u2_fast(); | |
1303 u2 handler_pc = cfs->get_u2_fast(); | |
1304 u2 catch_type_index = cfs->get_u2_fast(); | |
1305 // Will check legal target after parsing code array in verifier. | |
1306 if (_need_verify) { | |
1307 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), | |
1308 "Illegal exception table range in class file %s", CHECK_(nullHandle)); | |
1309 guarantee_property(handler_pc < code_length, | |
1310 "Illegal exception table handler in class file %s", CHECK_(nullHandle)); | |
1311 if (catch_type_index != 0) { | |
1312 guarantee_property(valid_cp_range(catch_type_index, cp->length()) && | |
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1313 is_klass_reference(cp, catch_type_index), |
0 | 1314 "Catch type in exception table has bad constant type in class file %s", CHECK_(nullHandle)); |
1315 } | |
1316 } | |
1317 exception_handlers->int_at_put(index++, start_pc); | |
1318 exception_handlers->int_at_put(index++, end_pc); | |
1319 exception_handlers->int_at_put(index++, handler_pc); | |
1320 exception_handlers->int_at_put(index++, catch_type_index); | |
1321 } | |
1322 return exception_handlers; | |
1323 } | |
1324 | |
1325 void ClassFileParser::parse_linenumber_table( | |
1326 u4 code_attribute_length, u4 code_length, | |
1327 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
1328 ClassFileStream* cfs = stream(); | |
1329 unsigned int num_entries = cfs->get_u2(CHECK); | |
1330 | |
1331 // Each entry is a u2 start_pc, and a u2 line_number | |
1332 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
1333 | |
1334 // Verify line number attribute and table length | |
1335 check_property( | |
1336 code_attribute_length == sizeof(u2) + length_in_bytes, | |
1337 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
1338 | |
1339 cfs->guarantee_more(length_in_bytes, CHECK); | |
1340 | |
1341 if ((*write_stream) == NULL) { | |
1342 if (length_in_bytes > fixed_buffer_size) { | |
1343 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
1344 } else { | |
1345 (*write_stream) = new CompressedLineNumberWriteStream( | |
1346 linenumbertable_buffer, fixed_buffer_size); | |
1347 } | |
1348 } | |
1349 | |
1350 while (num_entries-- > 0) { | |
1351 u2 bci = cfs->get_u2_fast(); // start_pc | |
1352 u2 line = cfs->get_u2_fast(); // line_number | |
1353 guarantee_property(bci < code_length, | |
1354 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
1355 (*write_stream)->write_pair(bci, line); | |
1356 } | |
1357 } | |
1358 | |
1359 | |
1360 // Class file LocalVariableTable elements. | |
1361 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
1362 public: | |
1363 u2 start_bci; | |
1364 u2 length; | |
1365 u2 name_cp_index; | |
1366 u2 descriptor_cp_index; | |
1367 u2 slot; | |
1368 }; | |
1369 | |
1370 | |
1371 class LVT_Hash: public CHeapObj { | |
1372 public: | |
1373 LocalVariableTableElement *_elem; // element | |
1374 LVT_Hash* _next; // Next entry in hash table | |
1375 }; | |
1376 | |
1377 unsigned int hash(LocalVariableTableElement *elem) { | |
1378 unsigned int raw_hash = elem->start_bci; | |
1379 | |
1380 raw_hash = elem->length + raw_hash * 37; | |
1381 raw_hash = elem->name_cp_index + raw_hash * 37; | |
1382 raw_hash = elem->slot + raw_hash * 37; | |
1383 | |
1384 return raw_hash % HASH_ROW_SIZE; | |
1385 } | |
1386 | |
1387 void initialize_hashtable(LVT_Hash** table) { | |
1388 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1389 table[i] = NULL; | |
1390 } | |
1391 } | |
1392 | |
1393 void clear_hashtable(LVT_Hash** table) { | |
1394 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1395 LVT_Hash* current = table[i]; | |
1396 LVT_Hash* next; | |
1397 while (current != NULL) { | |
1398 next = current->_next; | |
1399 current->_next = NULL; | |
1400 delete(current); | |
1401 current = next; | |
1402 } | |
1403 table[i] = NULL; | |
1404 } | |
1405 } | |
1406 | |
1407 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
1408 LVT_Hash* entry = table[index]; | |
1409 | |
1410 /* | |
1411 * 3-tuple start_bci/length/slot has to be unique key, | |
1412 * so the following comparison seems to be redundant: | |
1413 * && elem->name_cp_index == entry->_elem->name_cp_index | |
1414 */ | |
1415 while (entry != NULL) { | |
1416 if (elem->start_bci == entry->_elem->start_bci | |
1417 && elem->length == entry->_elem->length | |
1418 && elem->name_cp_index == entry->_elem->name_cp_index | |
1419 && elem->slot == entry->_elem->slot | |
1420 ) { | |
1421 return entry; | |
1422 } | |
1423 entry = entry->_next; | |
1424 } | |
1425 return NULL; | |
1426 } | |
1427 | |
1428 // Return false if the local variable is found in table. | |
1429 // Return true if no duplicate is found. | |
1430 // And local variable is added as a new entry in table. | |
1431 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
1432 // First lookup for duplicates | |
1433 int index = hash(elem); | |
1434 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
1435 | |
1436 if (entry != NULL) { | |
1437 return false; | |
1438 } | |
1439 // No duplicate is found, allocate a new entry and fill it. | |
1440 if ((entry = new LVT_Hash()) == NULL) { | |
1441 return false; | |
1442 } | |
1443 entry->_elem = elem; | |
1444 | |
1445 // Insert into hash table | |
1446 entry->_next = table[index]; | |
1447 table[index] = entry; | |
1448 | |
1449 return true; | |
1450 } | |
1451 | |
1452 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
1453 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
1454 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
1455 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
1456 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
1457 lvt->signature_cp_index = 0; | |
1458 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
1459 } | |
1460 | |
1461 // Function is used to parse both attributes: | |
1462 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
1463 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
1464 u2 max_locals, | |
1465 u4 code_attribute_length, | |
1466 constantPoolHandle cp, | |
1467 u2* localvariable_table_length, | |
1468 bool isLVTT, | |
1469 TRAPS) { | |
1470 ClassFileStream* cfs = stream(); | |
1471 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
1472 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
1473 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
1474 // Verify local variable table attribute has right length | |
1475 if (_need_verify) { | |
1476 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
1477 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
1478 } | |
1479 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
1480 assert(localvariable_table_start != NULL, "null local variable table"); | |
1481 if (!_need_verify) { | |
1482 cfs->skip_u2_fast(size); | |
1483 } else { | |
1484 cfs->guarantee_more(size * 2, CHECK_NULL); | |
1485 for(int i = 0; i < (*localvariable_table_length); i++) { | |
1486 u2 start_pc = cfs->get_u2_fast(); | |
1487 u2 length = cfs->get_u2_fast(); | |
1488 u2 name_index = cfs->get_u2_fast(); | |
1489 u2 descriptor_index = cfs->get_u2_fast(); | |
1490 u2 index = cfs->get_u2_fast(); | |
1491 // Assign to a u4 to avoid overflow | |
1492 u4 end_pc = (u4)start_pc + (u4)length; | |
1493 | |
1494 if (start_pc >= code_length) { | |
1495 classfile_parse_error( | |
1496 "Invalid start_pc %u in %s in class file %s", | |
1497 start_pc, tbl_name, CHECK_NULL); | |
1498 } | |
1499 if (end_pc > code_length) { | |
1500 classfile_parse_error( | |
1501 "Invalid length %u in %s in class file %s", | |
1502 length, tbl_name, CHECK_NULL); | |
1503 } | |
1504 int cp_size = cp->length(); | |
1505 guarantee_property( | |
1506 valid_cp_range(name_index, cp_size) && | |
1507 cp->tag_at(name_index).is_utf8(), | |
1508 "Name index %u in %s has bad constant type in class file %s", | |
1509 name_index, tbl_name, CHECK_NULL); | |
1510 guarantee_property( | |
1511 valid_cp_range(descriptor_index, cp_size) && | |
1512 cp->tag_at(descriptor_index).is_utf8(), | |
1513 "Signature index %u in %s has bad constant type in class file %s", | |
1514 descriptor_index, tbl_name, CHECK_NULL); | |
1515 | |
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1516 Symbol* name = cp->symbol_at(name_index); |
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1517 Symbol* sig = cp->symbol_at(descriptor_index); |
0 | 1518 verify_legal_field_name(name, CHECK_NULL); |
1519 u2 extra_slot = 0; | |
1520 if (!isLVTT) { | |
1521 verify_legal_field_signature(name, sig, CHECK_NULL); | |
1522 | |
1523 // 4894874: check special cases for double and long local variables | |
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1524 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
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1525 sig == vmSymbols::type_signature(T_LONG)) { |
0 | 1526 extra_slot = 1; |
1527 } | |
1528 } | |
1529 guarantee_property((index + extra_slot) < max_locals, | |
1530 "Invalid index %u in %s in class file %s", | |
1531 index, tbl_name, CHECK_NULL); | |
1532 } | |
1533 } | |
1534 return localvariable_table_start; | |
1535 } | |
1536 | |
1537 | |
1538 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
1539 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { | |
1540 ClassFileStream* cfs = stream(); | |
1541 u2 index = 0; // index in the array with long/double occupying two slots | |
1542 u4 i1 = *u1_index; | |
1543 u4 i2 = *u2_index + 1; | |
1544 for(int i = 0; i < array_length; i++) { | |
1545 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
1546 index++; | |
1547 if (tag == ITEM_Long || tag == ITEM_Double) { | |
1548 index++; | |
1549 } else if (tag == ITEM_Object) { | |
1550 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
1551 guarantee_property(valid_cp_range(class_index, cp->length()) && | |
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1552 is_klass_reference(cp, class_index), |
0 | 1553 "Bad class index %u in StackMap in class file %s", |
1554 class_index, CHECK); | |
1555 } else if (tag == ITEM_Uninitialized) { | |
1556 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
1557 guarantee_property( | |
1558 offset < code_length, | |
1559 "Bad uninitialized type offset %u in StackMap in class file %s", | |
1560 offset, CHECK); | |
1561 } else { | |
1562 guarantee_property( | |
1563 tag <= (u1)ITEM_Uninitialized, | |
1564 "Unknown variable type %u in StackMap in class file %s", | |
1565 tag, CHECK); | |
1566 } | |
1567 } | |
1568 u2_array[*u2_index] = index; | |
1569 *u1_index = i1; | |
1570 *u2_index = i2; | |
1571 } | |
1572 | |
1573 typeArrayOop ClassFileParser::parse_stackmap_table( | |
1574 u4 code_attribute_length, TRAPS) { | |
1575 if (code_attribute_length == 0) | |
1576 return NULL; | |
1577 | |
1578 ClassFileStream* cfs = stream(); | |
1579 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
1580 assert(stackmap_table_start != NULL, "null stackmap table"); | |
1581 | |
1582 // check code_attribute_length first | |
1583 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
1584 | |
1585 if (!_need_verify && !DumpSharedSpaces) { | |
1586 return NULL; | |
1587 } | |
1588 | |
1589 typeArrayOop stackmap_data = | |
1590 oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL); | |
1591 | |
1592 stackmap_data->set_length(code_attribute_length); | |
1593 memcpy((void*)stackmap_data->byte_at_addr(0), | |
1594 (void*)stackmap_table_start, code_attribute_length); | |
1595 return stackmap_data; | |
1596 } | |
1597 | |
1598 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
1599 u4 method_attribute_length, | |
1600 constantPoolHandle cp, TRAPS) { | |
1601 ClassFileStream* cfs = stream(); | |
1602 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
1603 *checked_exceptions_length = cfs->get_u2_fast(); | |
1604 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
1605 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
1606 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
1607 if (!_need_verify) { | |
1608 cfs->skip_u2_fast(size); | |
1609 } else { | |
1610 // Verify each value in the checked exception table | |
1611 u2 checked_exception; | |
1612 u2 len = *checked_exceptions_length; | |
1613 cfs->guarantee_more(2 * len, CHECK_NULL); | |
1614 for (int i = 0; i < len; i++) { | |
1615 checked_exception = cfs->get_u2_fast(); | |
1616 check_property( | |
1617 valid_cp_range(checked_exception, cp->length()) && | |
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1618 is_klass_reference(cp, checked_exception), |
0 | 1619 "Exception name has bad type at constant pool %u in class file %s", |
1620 checked_exception, CHECK_NULL); | |
1621 } | |
1622 } | |
1623 // check exceptions attribute length | |
1624 if (_need_verify) { | |
1625 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
1626 sizeof(u2) * size), | |
1627 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
1628 } | |
1629 return checked_exceptions_start; | |
1630 } | |
1631 | |
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1632 void ClassFileParser::throwIllegalSignature( |
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1633 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
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1634 ResourceMark rm(THREAD); |
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1635 Exceptions::fthrow(THREAD_AND_LOCATION, |
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1636 vmSymbols::java_lang_ClassFormatError(), |
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1637 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
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1638 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
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1639 } |
0 | 1640 |
1641 #define MAX_ARGS_SIZE 255 | |
1642 #define MAX_CODE_SIZE 65535 | |
1643 #define INITIAL_MAX_LVT_NUMBER 256 | |
1644 | |
1645 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
1646 // attribute is inlined. This is curbersome to avoid since we inline most of the parts in the | |
1647 // methodOop to save footprint, so we only know the size of the resulting methodOop when the | |
1648 // entire method attribute is parsed. | |
1649 // | |
1650 // The promoted_flags parameter is used to pass relevant access_flags | |
1651 // from the method back up to the containing klass. These flag values | |
1652 // are added to klass's access_flags. | |
1653 | |
1654 methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface, | |
1655 AccessFlags *promoted_flags, | |
1656 typeArrayHandle* method_annotations, | |
1657 typeArrayHandle* method_parameter_annotations, | |
1658 typeArrayHandle* method_default_annotations, | |
1659 TRAPS) { | |
1660 ClassFileStream* cfs = stream(); | |
1661 methodHandle nullHandle; | |
1662 ResourceMark rm(THREAD); | |
1663 // Parse fixed parts | |
1664 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1665 | |
1666 int flags = cfs->get_u2_fast(); | |
1667 u2 name_index = cfs->get_u2_fast(); | |
1668 int cp_size = cp->length(); | |
1669 check_property( | |
1670 valid_cp_range(name_index, cp_size) && | |
1671 cp->tag_at(name_index).is_utf8(), | |
1672 "Illegal constant pool index %u for method name in class file %s", | |
1673 name_index, CHECK_(nullHandle)); | |
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1674 Symbol* name = cp->symbol_at(name_index); |
0 | 1675 verify_legal_method_name(name, CHECK_(nullHandle)); |
1676 | |
1677 u2 signature_index = cfs->get_u2_fast(); | |
1678 guarantee_property( | |
1679 valid_cp_range(signature_index, cp_size) && | |
1680 cp->tag_at(signature_index).is_utf8(), | |
1681 "Illegal constant pool index %u for method signature in class file %s", | |
1682 signature_index, CHECK_(nullHandle)); | |
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1683 Symbol* signature = cp->symbol_at(signature_index); |
0 | 1684 |
1685 AccessFlags access_flags; | |
1686 if (name == vmSymbols::class_initializer_name()) { | |
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1687 // We ignore the other access flags for a valid class initializer. |
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1688 // (JVM Spec 2nd ed., chapter 4.6) |
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1689 if (_major_version < 51) { // backward compatibility |
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1690 flags = JVM_ACC_STATIC; |
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1691 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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1692 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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1693 } |
0 | 1694 } else { |
1695 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
1696 } | |
1697 | |
1698 int args_size = -1; // only used when _need_verify is true | |
1699 if (_need_verify) { | |
1700 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
1701 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
1702 if (args_size > MAX_ARGS_SIZE) { | |
1703 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
1704 } | |
1705 } | |
1706 | |
1707 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
1708 | |
1709 // Default values for code and exceptions attribute elements | |
1710 u2 max_stack = 0; | |
1711 u2 max_locals = 0; | |
1712 u4 code_length = 0; | |
1713 u1* code_start = 0; | |
1714 u2 exception_table_length = 0; | |
1715 typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array()); | |
1716 u2 checked_exceptions_length = 0; | |
1717 u2* checked_exceptions_start = NULL; | |
1718 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
1719 int linenumber_table_length = 0; | |
1720 int total_lvt_length = 0; | |
1721 u2 lvt_cnt = 0; | |
1722 u2 lvtt_cnt = 0; | |
1723 bool lvt_allocated = false; | |
1724 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1725 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1726 u2* localvariable_table_length; | |
1727 u2** localvariable_table_start; | |
1728 u2* localvariable_type_table_length; | |
1729 u2** localvariable_type_table_start; | |
1730 bool parsed_code_attribute = false; | |
1731 bool parsed_checked_exceptions_attribute = false; | |
1732 bool parsed_stackmap_attribute = false; | |
1733 // stackmap attribute - JDK1.5 | |
1734 typeArrayHandle stackmap_data; | |
1735 u2 generic_signature_index = 0; | |
1736 u1* runtime_visible_annotations = NULL; | |
1737 int runtime_visible_annotations_length = 0; | |
1738 u1* runtime_invisible_annotations = NULL; | |
1739 int runtime_invisible_annotations_length = 0; | |
1740 u1* runtime_visible_parameter_annotations = NULL; | |
1741 int runtime_visible_parameter_annotations_length = 0; | |
1742 u1* runtime_invisible_parameter_annotations = NULL; | |
1743 int runtime_invisible_parameter_annotations_length = 0; | |
1744 u1* annotation_default = NULL; | |
1745 int annotation_default_length = 0; | |
1746 | |
1747 // Parse code and exceptions attribute | |
1748 u2 method_attributes_count = cfs->get_u2_fast(); | |
1749 while (method_attributes_count--) { | |
1750 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
1751 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
1752 u4 method_attribute_length = cfs->get_u4_fast(); | |
1753 check_property( | |
1754 valid_cp_range(method_attribute_name_index, cp_size) && | |
1755 cp->tag_at(method_attribute_name_index).is_utf8(), | |
1756 "Invalid method attribute name index %u in class file %s", | |
1757 method_attribute_name_index, CHECK_(nullHandle)); | |
1758 | |
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1759 Symbol* method_attribute_name = cp->symbol_at(method_attribute_name_index); |
0 | 1760 if (method_attribute_name == vmSymbols::tag_code()) { |
1761 // Parse Code attribute | |
1762 if (_need_verify) { | |
1763 guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(), | |
1764 "Code attribute in native or abstract methods in class file %s", | |
1765 CHECK_(nullHandle)); | |
1766 } | |
1767 if (parsed_code_attribute) { | |
1768 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
1769 } | |
1770 parsed_code_attribute = true; | |
1771 | |
1772 // Stack size, locals size, and code size | |
1773 if (_major_version == 45 && _minor_version <= 2) { | |
1774 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
1775 max_stack = cfs->get_u1_fast(); | |
1776 max_locals = cfs->get_u1_fast(); | |
1777 code_length = cfs->get_u2_fast(); | |
1778 } else { | |
1779 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
1780 max_stack = cfs->get_u2_fast(); | |
1781 max_locals = cfs->get_u2_fast(); | |
1782 code_length = cfs->get_u4_fast(); | |
1783 } | |
1784 if (_need_verify) { | |
1785 guarantee_property(args_size <= max_locals, | |
1786 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
1787 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
1788 "Invalid method Code length %u in class file %s", | |
1789 code_length, CHECK_(nullHandle)); | |
1790 } | |
1791 // Code pointer | |
1792 code_start = cfs->get_u1_buffer(); | |
1793 assert(code_start != NULL, "null code start"); | |
1794 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
1795 cfs->skip_u1_fast(code_length); | |
1796 | |
1797 // Exception handler table | |
1798 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
1799 exception_table_length = cfs->get_u2_fast(); | |
1800 if (exception_table_length > 0) { | |
1801 exception_handlers = | |
1802 parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle)); | |
1803 } | |
1804 | |
1805 // Parse additional attributes in code attribute | |
1806 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
1807 u2 code_attributes_count = cfs->get_u2_fast(); | |
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1808 |
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1809 unsigned int calculated_attribute_length = 0; |
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1810 |
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1811 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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1812 calculated_attribute_length = |
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1813 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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1814 } else { |
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1815 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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1816 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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1817 } |
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1818 calculated_attribute_length += |
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1819 code_length + |
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1820 sizeof(exception_table_length) + |
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1821 sizeof(code_attributes_count) + |
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1822 exception_table_length * |
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1823 ( sizeof(u2) + // start_pc |
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1824 sizeof(u2) + // end_pc |
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1825 sizeof(u2) + // handler_pc |
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1826 sizeof(u2) ); // catch_type_index |
0 | 1827 |
1828 while (code_attributes_count--) { | |
1829 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
1830 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
1831 u4 code_attribute_length = cfs->get_u4_fast(); | |
1832 calculated_attribute_length += code_attribute_length + | |
1833 sizeof(code_attribute_name_index) + | |
1834 sizeof(code_attribute_length); | |
1835 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
1836 cp->tag_at(code_attribute_name_index).is_utf8(), | |
1837 "Invalid code attribute name index %u in class file %s", | |
1838 code_attribute_name_index, | |
1839 CHECK_(nullHandle)); | |
1840 if (LoadLineNumberTables && | |
1841 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
1842 // Parse and compress line number table | |
1843 parse_linenumber_table(code_attribute_length, code_length, | |
1844 &linenumber_table, CHECK_(nullHandle)); | |
1845 | |
1846 } else if (LoadLocalVariableTables && | |
1847 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
1848 // Parse local variable table | |
1849 if (!lvt_allocated) { | |
1850 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1851 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1852 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1853 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1854 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1855 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1856 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1857 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1858 lvt_allocated = true; | |
1859 } | |
1860 if (lvt_cnt == max_lvt_cnt) { | |
1861 max_lvt_cnt <<= 1; | |
1862 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
1863 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
1864 } | |
1865 localvariable_table_start[lvt_cnt] = | |
1866 parse_localvariable_table(code_length, | |
1867 max_locals, | |
1868 code_attribute_length, | |
1869 cp, | |
1870 &localvariable_table_length[lvt_cnt], | |
1871 false, // is not LVTT | |
1872 CHECK_(nullHandle)); | |
1873 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
1874 lvt_cnt++; | |
1875 } else if (LoadLocalVariableTypeTables && | |
1876 _major_version >= JAVA_1_5_VERSION && | |
1877 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
1878 if (!lvt_allocated) { | |
1879 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1880 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1881 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1882 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1883 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1884 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1885 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1886 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1887 lvt_allocated = true; | |
1888 } | |
1889 // Parse local variable type table | |
1890 if (lvtt_cnt == max_lvtt_cnt) { | |
1891 max_lvtt_cnt <<= 1; | |
1892 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
1893 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
1894 } | |
1895 localvariable_type_table_start[lvtt_cnt] = | |
1896 parse_localvariable_table(code_length, | |
1897 max_locals, | |
1898 code_attribute_length, | |
1899 cp, | |
1900 &localvariable_type_table_length[lvtt_cnt], | |
1901 true, // is LVTT | |
1902 CHECK_(nullHandle)); | |
1903 lvtt_cnt++; | |
1904 } else if (UseSplitVerifier && | |
1905 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
1906 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
1907 // Stack map is only needed by the new verifier in JDK1.5. | |
1908 if (parsed_stackmap_attribute) { | |
1909 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
1910 } | |
1911 typeArrayOop sm = | |
1912 parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); | |
1913 stackmap_data = typeArrayHandle(THREAD, sm); | |
1914 parsed_stackmap_attribute = true; | |
1915 } else { | |
1916 // Skip unknown attributes | |
1917 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
1918 } | |
1919 } | |
1920 // check method attribute length | |
1921 if (_need_verify) { | |
1922 guarantee_property(method_attribute_length == calculated_attribute_length, | |
1923 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
1924 } | |
1925 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
1926 // Parse Exceptions attribute | |
1927 if (parsed_checked_exceptions_attribute) { | |
1928 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
1929 } | |
1930 parsed_checked_exceptions_attribute = true; | |
1931 checked_exceptions_start = | |
1932 parse_checked_exceptions(&checked_exceptions_length, | |
1933 method_attribute_length, | |
1934 cp, CHECK_(nullHandle)); | |
1935 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { | |
1936 if (method_attribute_length != 0) { | |
1937 classfile_parse_error( | |
1938 "Invalid Synthetic method attribute length %u in class file %s", | |
1939 method_attribute_length, CHECK_(nullHandle)); | |
1940 } | |
1941 // Should we check that there hasn't already been a synthetic attribute? | |
1942 access_flags.set_is_synthetic(); | |
1943 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
1944 if (method_attribute_length != 0) { | |
1945 classfile_parse_error( | |
1946 "Invalid Deprecated method attribute length %u in class file %s", | |
1947 method_attribute_length, CHECK_(nullHandle)); | |
1948 } | |
1949 } else if (_major_version >= JAVA_1_5_VERSION) { | |
1950 if (method_attribute_name == vmSymbols::tag_signature()) { | |
1951 if (method_attribute_length != 2) { | |
1952 classfile_parse_error( | |
1953 "Invalid Signature attribute length %u in class file %s", | |
1954 method_attribute_length, CHECK_(nullHandle)); | |
1955 } | |
1956 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
1957 generic_signature_index = cfs->get_u2_fast(); | |
1958 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
1959 runtime_visible_annotations_length = method_attribute_length; | |
1960 runtime_visible_annotations = cfs->get_u1_buffer(); | |
1961 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
1962 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); | |
1963 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
1964 runtime_invisible_annotations_length = method_attribute_length; | |
1965 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
1966 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
1967 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
1968 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
1969 runtime_visible_parameter_annotations_length = method_attribute_length; | |
1970 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
1971 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
1972 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
1973 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
1974 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
1975 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
1976 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
1977 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
1978 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
1979 annotation_default_length = method_attribute_length; | |
1980 annotation_default = cfs->get_u1_buffer(); | |
1981 assert(annotation_default != NULL, "null annotation default"); | |
1982 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
1983 } else { | |
1984 // Skip unknown attributes | |
1985 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
1986 } | |
1987 } else { | |
1988 // Skip unknown attributes | |
1989 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
1990 } | |
1991 } | |
1992 | |
1993 if (linenumber_table != NULL) { | |
1994 linenumber_table->write_terminator(); | |
1995 linenumber_table_length = linenumber_table->position(); | |
1996 } | |
1997 | |
1998 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
1999 if (_need_verify) { | |
2000 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
2001 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
2002 } | |
2003 | |
2004 // All sizing information for a methodOop is finally available, now create it | |
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2005 methodOop m_oop = oopFactory::new_method(code_length, access_flags, linenumber_table_length, |
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2006 total_lvt_length, checked_exceptions_length, |
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2007 oopDesc::IsSafeConc, CHECK_(nullHandle)); |
0 | 2008 methodHandle m (THREAD, m_oop); |
2009 | |
2010 ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize); | |
2011 | |
2012 // Fill in information from fixed part (access_flags already set) | |
2013 m->set_constants(cp()); | |
2014 m->set_name_index(name_index); | |
2015 m->set_signature_index(signature_index); | |
2016 m->set_generic_signature_index(generic_signature_index); | |
2017 #ifdef CC_INTERP | |
2018 // hmm is there a gc issue here?? | |
2019 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
2020 m->set_result_index(rtf.type()); | |
2021 #endif | |
2022 | |
2023 if (args_size >= 0) { | |
2024 m->set_size_of_parameters(args_size); | |
2025 } else { | |
2026 m->compute_size_of_parameters(THREAD); | |
2027 } | |
2028 #ifdef ASSERT | |
2029 if (args_size >= 0) { | |
2030 m->compute_size_of_parameters(THREAD); | |
2031 assert(args_size == m->size_of_parameters(), ""); | |
2032 } | |
2033 #endif | |
2034 | |
2035 // Fill in code attribute information | |
2036 m->set_max_stack(max_stack); | |
2037 m->set_max_locals(max_locals); | |
2038 m->constMethod()->set_stackmap_data(stackmap_data()); | |
2039 | |
2040 /** | |
2041 * The exception_table field is the flag used to indicate | |
2042 * that the methodOop and it's associated constMethodOop are partially | |
2043 * initialized and thus are exempt from pre/post GC verification. Once | |
2044 * the field is set, the oops are considered fully initialized so make | |
2045 * sure that the oops can pass verification when this field is set. | |
2046 */ | |
2047 m->set_exception_table(exception_handlers()); | |
2048 | |
2049 // Copy byte codes | |
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2050 m->set_code(code_start); |
0 | 2051 |
2052 // Copy line number table | |
2053 if (linenumber_table != NULL) { | |
2054 memcpy(m->compressed_linenumber_table(), | |
2055 linenumber_table->buffer(), linenumber_table_length); | |
2056 } | |
2057 | |
2058 // Copy checked exceptions | |
2059 if (checked_exceptions_length > 0) { | |
2060 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
2061 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
2062 } | |
2063 | |
2064 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
2065 * | |
2066 * Rules for LVT's and LVTT's are: | |
2067 * - There can be any number of LVT's and LVTT's. | |
2068 * - If there are n LVT's, it is the same as if there was just | |
2069 * one LVT containing all the entries from the n LVT's. | |
2070 * - There may be no more than one LVT entry per local variable. | |
2071 * Two LVT entries are 'equal' if these fields are the same: | |
2072 * start_pc, length, name, slot | |
2073 * - There may be no more than one LVTT entry per each LVT entry. | |
2074 * Each LVTT entry has to match some LVT entry. | |
2075 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
2076 */ | |
2077 if (total_lvt_length > 0) { | |
2078 int tbl_no, idx; | |
2079 | |
2080 promoted_flags->set_has_localvariable_table(); | |
2081 | |
2082 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
2083 initialize_hashtable(lvt_Hash); | |
2084 | |
2085 // To fill LocalVariableTable in | |
2086 Classfile_LVT_Element* cf_lvt; | |
2087 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
2088 | |
2089 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
2090 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
2091 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
2092 copy_lvt_element(&cf_lvt[idx], lvt); | |
2093 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
2094 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
2095 && _need_verify | |
2096 && _major_version >= JAVA_1_5_VERSION ) { | |
2097 clear_hashtable(lvt_Hash); | |
2098 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
2099 "entry for '%s' in class file %s", | |
2100 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
2101 CHECK_(nullHandle)); | |
2102 } | |
2103 } | |
2104 } | |
2105 | |
2106 // To merge LocalVariableTable and LocalVariableTypeTable | |
2107 Classfile_LVT_Element* cf_lvtt; | |
2108 LocalVariableTableElement lvtt_elem; | |
2109 | |
2110 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
2111 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
2112 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
2113 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
2114 int index = hash(&lvtt_elem); | |
2115 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
2116 if (entry == NULL) { | |
2117 if (_need_verify) { | |
2118 clear_hashtable(lvt_Hash); | |
2119 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
2120 "does not match any LVT entry", | |
2121 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
2122 CHECK_(nullHandle)); | |
2123 } | |
2124 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
2125 clear_hashtable(lvt_Hash); | |
2126 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
2127 "entry for '%s' in class file %s", | |
2128 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
2129 CHECK_(nullHandle)); | |
2130 } else { | |
2131 // to add generic signatures into LocalVariableTable | |
2132 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
2133 } | |
2134 } | |
2135 } | |
2136 clear_hashtable(lvt_Hash); | |
2137 } | |
2138 | |
2139 *method_annotations = assemble_annotations(runtime_visible_annotations, | |
2140 runtime_visible_annotations_length, | |
2141 runtime_invisible_annotations, | |
2142 runtime_invisible_annotations_length, | |
2143 CHECK_(nullHandle)); | |
2144 *method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations, | |
2145 runtime_visible_parameter_annotations_length, | |
2146 runtime_invisible_parameter_annotations, | |
2147 runtime_invisible_parameter_annotations_length, | |
2148 CHECK_(nullHandle)); | |
2149 *method_default_annotations = assemble_annotations(annotation_default, | |
2150 annotation_default_length, | |
2151 NULL, | |
2152 0, | |
2153 CHECK_(nullHandle)); | |
2154 | |
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2155 if (name == vmSymbols::finalize_method_name() && |
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2156 signature == vmSymbols::void_method_signature()) { |
0 | 2157 if (m->is_empty_method()) { |
2158 _has_empty_finalizer = true; | |
2159 } else { | |
2160 _has_finalizer = true; | |
2161 } | |
2162 } | |
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2163 if (name == vmSymbols::object_initializer_name() && |
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2164 signature == vmSymbols::void_method_signature() && |
0 | 2165 m->is_vanilla_constructor()) { |
2166 _has_vanilla_constructor = true; | |
2167 } | |
2168 | |
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2169 if (EnableInvokeDynamic && (m->is_method_handle_invoke() || |
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2170 m->is_method_handle_adapter())) { |
710 | 2171 THROW_MSG_(vmSymbols::java_lang_VirtualMachineError(), |
2172 "Method handle invokers must be defined internally to the VM", nullHandle); | |
2173 } | |
2174 | |
0 | 2175 return m; |
2176 } | |
2177 | |
2178 | |
2179 // The promoted_flags parameter is used to pass relevant access_flags | |
2180 // from the methods back up to the containing klass. These flag values | |
2181 // are added to klass's access_flags. | |
2182 | |
2183 objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface, | |
2184 AccessFlags* promoted_flags, | |
2185 bool* has_final_method, | |
2186 objArrayOop* methods_annotations_oop, | |
2187 objArrayOop* methods_parameter_annotations_oop, | |
2188 objArrayOop* methods_default_annotations_oop, | |
2189 TRAPS) { | |
2190 ClassFileStream* cfs = stream(); | |
2191 objArrayHandle nullHandle; | |
2192 typeArrayHandle method_annotations; | |
2193 typeArrayHandle method_parameter_annotations; | |
2194 typeArrayHandle method_default_annotations; | |
2195 cfs->guarantee_more(2, CHECK_(nullHandle)); // length | |
2196 u2 length = cfs->get_u2_fast(); | |
2197 if (length == 0) { | |
2198 return objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
2199 } else { | |
2200 objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2201 objArrayHandle methods(THREAD, m); | |
2202 HandleMark hm(THREAD); | |
2203 objArrayHandle methods_annotations; | |
2204 objArrayHandle methods_parameter_annotations; | |
2205 objArrayHandle methods_default_annotations; | |
2206 for (int index = 0; index < length; index++) { | |
2207 methodHandle method = parse_method(cp, is_interface, | |
2208 promoted_flags, | |
2209 &method_annotations, | |
2210 &method_parameter_annotations, | |
2211 &method_default_annotations, | |
2212 CHECK_(nullHandle)); | |
2213 if (method->is_final()) { | |
2214 *has_final_method = true; | |
2215 } | |
2216 methods->obj_at_put(index, method()); | |
2217 if (method_annotations.not_null()) { | |
2218 if (methods_annotations.is_null()) { | |
2219 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2220 methods_annotations = objArrayHandle(THREAD, md); | |
2221 } | |
2222 methods_annotations->obj_at_put(index, method_annotations()); | |
2223 } | |
2224 if (method_parameter_annotations.not_null()) { | |
2225 if (methods_parameter_annotations.is_null()) { | |
2226 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2227 methods_parameter_annotations = objArrayHandle(THREAD, md); | |
2228 } | |
2229 methods_parameter_annotations->obj_at_put(index, method_parameter_annotations()); | |
2230 } | |
2231 if (method_default_annotations.not_null()) { | |
2232 if (methods_default_annotations.is_null()) { | |
2233 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2234 methods_default_annotations = objArrayHandle(THREAD, md); | |
2235 } | |
2236 methods_default_annotations->obj_at_put(index, method_default_annotations()); | |
2237 } | |
2238 } | |
2239 if (_need_verify && length > 1) { | |
2240 // Check duplicated methods | |
2241 ResourceMark rm(THREAD); | |
2242 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2243 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
2244 initialize_hashtable(names_and_sigs); | |
2245 bool dup = false; | |
2246 { | |
2247 debug_only(No_Safepoint_Verifier nsv;) | |
2248 for (int i = 0; i < length; i++) { | |
2249 methodOop m = (methodOop)methods->obj_at(i); | |
2250 // If no duplicates, add name/signature in hashtable names_and_sigs. | |
2251 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
2252 dup = true; | |
2253 break; | |
2254 } | |
2255 } | |
2256 } | |
2257 if (dup) { | |
2258 classfile_parse_error("Duplicate method name&signature in class file %s", | |
2259 CHECK_(nullHandle)); | |
2260 } | |
2261 } | |
2262 | |
2263 *methods_annotations_oop = methods_annotations(); | |
2264 *methods_parameter_annotations_oop = methods_parameter_annotations(); | |
2265 *methods_default_annotations_oop = methods_default_annotations(); | |
2266 | |
2267 return methods; | |
2268 } | |
2269 } | |
2270 | |
2271 | |
2272 typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods, | |
2273 objArrayHandle methods_annotations, | |
2274 objArrayHandle methods_parameter_annotations, | |
2275 objArrayHandle methods_default_annotations, | |
2276 TRAPS) { | |
2277 typeArrayHandle nullHandle; | |
2278 int length = methods()->length(); | |
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2279 // If JVMTI original method ordering or sharing is enabled we have to |
0 | 2280 // remember the original class file ordering. |
2281 // We temporarily use the vtable_index field in the methodOop to store the | |
2282 // class file index, so we can read in after calling qsort. | |
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2283 // Put the method ordering in the shared archive. |
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|
2284 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
0 | 2285 for (int index = 0; index < length; index++) { |
2286 methodOop m = methodOop(methods->obj_at(index)); | |
2287 assert(!m->valid_vtable_index(), "vtable index should not be set"); | |
2288 m->set_vtable_index(index); | |
2289 } | |
2290 } | |
2291 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
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2292 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
0 | 2293 methodOopDesc::sort_methods(methods(), |
2294 methods_annotations(), | |
2295 methods_parameter_annotations(), | |
2296 methods_default_annotations()); | |
2297 | |
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2298 // If JVMTI original method ordering or sharing is enabled construct int |
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2299 // array remembering the original ordering |
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2461
diff
changeset
|
2300 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
0 | 2301 typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle)); |
2302 typeArrayHandle method_ordering(THREAD, new_ordering); | |
2303 for (int index = 0; index < length; index++) { | |
2304 methodOop m = methodOop(methods->obj_at(index)); | |
2305 int old_index = m->vtable_index(); | |
2306 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
2307 method_ordering->int_at_put(index, old_index); | |
2308 m->set_vtable_index(methodOopDesc::invalid_vtable_index); | |
2309 } | |
2310 return method_ordering; | |
2311 } else { | |
2312 return typeArrayHandle(THREAD, Universe::the_empty_int_array()); | |
2313 } | |
2314 } | |
2315 | |
2316 | |
2317 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2318 ClassFileStream* cfs = stream(); | |
2319 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
2320 u2 sourcefile_index = cfs->get_u2_fast(); | |
2321 check_property( | |
2322 valid_cp_range(sourcefile_index, cp->length()) && | |
2323 cp->tag_at(sourcefile_index).is_utf8(), | |
2324 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
2325 sourcefile_index, CHECK); | |
2326 k->set_source_file_name(cp->symbol_at(sourcefile_index)); | |
2327 } | |
2328 | |
2329 | |
2330 | |
2331 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
2332 instanceKlassHandle k, | |
2333 int length, TRAPS) { | |
2334 ClassFileStream* cfs = stream(); | |
2335 u1* sde_buffer = cfs->get_u1_buffer(); | |
2336 assert(sde_buffer != NULL, "null sde buffer"); | |
2337 | |
2338 // Don't bother storing it if there is no way to retrieve it | |
2339 if (JvmtiExport::can_get_source_debug_extension()) { | |
2340 // Optimistically assume that only 1 byte UTF format is used | |
2341 // (common case) | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2342 TempNewSymbol sde_symbol = SymbolTable::new_symbol((const char*)sde_buffer, length, CHECK); |
0 | 2343 k->set_source_debug_extension(sde_symbol); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2344 // Note that set_source_debug_extension() increments the reference count |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2345 // for its copy of the Symbol*, so use a TempNewSymbol here. |
0 | 2346 } |
2347 // Got utf8 string, set stream position forward | |
2348 cfs->skip_u1(length, CHECK); | |
2349 } | |
2350 | |
2351 | |
2352 // Inner classes can be static, private or protected (classic VM does this) | |
2353 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
2354 | |
2355 // Return number of classes in the inner classes attribute table | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2356 u2 ClassFileParser::parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2357 bool parsed_enclosingmethod_attribute, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2358 u2 enclosing_method_class_index, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2359 u2 enclosing_method_method_index, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2360 constantPoolHandle cp, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
changeset
|
2361 instanceKlassHandle k, TRAPS) { |
0 | 2362 ClassFileStream* cfs = stream(); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
changeset
|
2363 u1* current_mark = cfs->current(); |
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diff
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|
2364 u2 length = 0; |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2365 if (inner_classes_attribute_start != NULL) { |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2366 cfs->set_current(inner_classes_attribute_start); |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2367 cfs->guarantee_more(2, CHECK_0); // length |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2368 length = cfs->get_u2_fast(); |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2369 } |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2370 |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2371 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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|
2372 // method data: |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2373 // [inner_class_info_index, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2374 // outer_class_info_index, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2375 // inner_name_index, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2376 // inner_class_access_flags, |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2377 // ... |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2378 // enclosing_method_class_index, |
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diff
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|
2379 // enclosing_method_method_index] |
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diff
changeset
|
2380 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
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diff
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|
2381 typeArrayOop ic = oopFactory::new_permanent_shortArray(size, CHECK_0); |
0 | 2382 typeArrayHandle inner_classes(THREAD, ic); |
2383 int index = 0; | |
2384 int cp_size = cp->length(); | |
2385 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
2386 for (int n = 0; n < length; n++) { | |
2387 // Inner class index | |
2388 u2 inner_class_info_index = cfs->get_u2_fast(); | |
2389 check_property( | |
2390 inner_class_info_index == 0 || | |
2391 (valid_cp_range(inner_class_info_index, cp_size) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
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parents:
196
diff
changeset
|
2392 is_klass_reference(cp, inner_class_info_index)), |
0 | 2393 "inner_class_info_index %u has bad constant type in class file %s", |
2394 inner_class_info_index, CHECK_0); | |
2395 // Outer class index | |
2396 u2 outer_class_info_index = cfs->get_u2_fast(); | |
2397 check_property( | |
2398 outer_class_info_index == 0 || | |
2399 (valid_cp_range(outer_class_info_index, cp_size) && | |
431
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196
diff
changeset
|
2400 is_klass_reference(cp, outer_class_info_index)), |
0 | 2401 "outer_class_info_index %u has bad constant type in class file %s", |
2402 outer_class_info_index, CHECK_0); | |
2403 // Inner class name | |
2404 u2 inner_name_index = cfs->get_u2_fast(); | |
2405 check_property( | |
2406 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
2407 cp->tag_at(inner_name_index).is_utf8()), | |
2408 "inner_name_index %u has bad constant type in class file %s", | |
2409 inner_name_index, CHECK_0); | |
2410 if (_need_verify) { | |
2411 guarantee_property(inner_class_info_index != outer_class_info_index, | |
2412 "Class is both outer and inner class in class file %s", CHECK_0); | |
2413 } | |
2414 // Access flags | |
2415 AccessFlags inner_access_flags; | |
2416 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
2417 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2418 // Set abstract bit for old class files for backward compatibility | |
2419 flags |= JVM_ACC_ABSTRACT; | |
2420 } | |
2421 verify_legal_class_modifiers(flags, CHECK_0); | |
2422 inner_access_flags.set_flags(flags); | |
2423 | |
2424 inner_classes->short_at_put(index++, inner_class_info_index); | |
2425 inner_classes->short_at_put(index++, outer_class_info_index); | |
2426 inner_classes->short_at_put(index++, inner_name_index); | |
2427 inner_classes->short_at_put(index++, inner_access_flags.as_short()); | |
2428 } | |
2429 | |
2430 // 4347400: make sure there's no duplicate entry in the classes array | |
2431 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4755
diff
changeset
|
2432 for(int i = 0; i < length * 4; i += 4) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
changeset
|
2433 for(int j = i + 4; j < length * 4; j += 4) { |
0 | 2434 guarantee_property((inner_classes->ushort_at(i) != inner_classes->ushort_at(j) || |
2435 inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) || | |
2436 inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) || | |
2437 inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)), | |
2438 "Duplicate entry in InnerClasses in class file %s", | |
2439 CHECK_0); | |
2440 } | |
2441 } | |
2442 } | |
2443 | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
changeset
|
2444 // Set EnclosingMethod class and method indexes. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4755
diff
changeset
|
2445 if (parsed_enclosingmethod_attribute) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2446 inner_classes->short_at_put(index++, enclosing_method_class_index); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2447 inner_classes->short_at_put(index++, enclosing_method_method_index); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
changeset
|
2448 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2449 assert(index == size, "wrong size"); |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4755
diff
changeset
|
2450 |
0 | 2451 // Update instanceKlass with inner class info. |
2452 k->set_inner_classes(inner_classes()); | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2453 |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2454 // Restore buffer's current position. |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2455 cfs->set_current(current_mark); |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2456 |
0 | 2457 return length; |
2458 } | |
2459 | |
2460 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2461 k->set_is_synthetic(); | |
2462 } | |
2463 | |
2464 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2465 ClassFileStream* cfs = stream(); | |
2466 u2 signature_index = cfs->get_u2(CHECK); | |
2467 check_property( | |
2468 valid_cp_range(signature_index, cp->length()) && | |
2469 cp->tag_at(signature_index).is_utf8(), | |
2470 "Invalid constant pool index %u in Signature attribute in class file %s", | |
2471 signature_index, CHECK); | |
2472 k->set_generic_signature(cp->symbol_at(signature_index)); | |
2473 } | |
2474 | |
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2475 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(constantPoolHandle cp, instanceKlassHandle k, |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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diff
changeset
|
2476 u4 attribute_byte_length, TRAPS) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2477 ClassFileStream* cfs = stream(); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2478 u1* current_start = cfs->current(); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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diff
changeset
|
2479 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2480 cfs->guarantee_more(2, CHECK); // length |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2481 int attribute_array_length = cfs->get_u2_fast(); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2482 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2483 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2484 "Short length on BootstrapMethods in class file %s", |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2485 CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2486 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2487 // The attribute contains a counted array of counted tuples of shorts, |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2488 // represending bootstrap specifiers: |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2489 // length*{bootstrap_method_index, argument_count*{argument_index}} |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2490 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2491 // operand_count = number of shorts in attr, except for leading length |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2492 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2493 // The attribute is copied into a short[] array. |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2494 // The array begins with a series of short[2] pairs, one for each tuple. |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2495 int index_size = (attribute_array_length * 2); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2496 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2497 typeArrayOop operands_oop = oopFactory::new_permanent_intArray(index_size + operand_count, CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2498 typeArrayHandle operands(THREAD, operands_oop); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2499 operands_oop = NULL; // tidy |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2500 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2501 int operand_fill_index = index_size; |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2502 int cp_size = cp->length(); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2503 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2504 for (int n = 0; n < attribute_array_length; n++) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2505 // Store a 32-bit offset into the header of the operand array. |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2506 assert(constantPoolOopDesc::operand_offset_at(operands(), n) == 0, ""); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2507 constantPoolOopDesc::operand_offset_at_put(operands(), n, operand_fill_index); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2508 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2509 // Read a bootstrap specifier. |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2510 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2511 u2 bootstrap_method_index = cfs->get_u2_fast(); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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1972
diff
changeset
|
2512 u2 argument_count = cfs->get_u2_fast(); |
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
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|
2513 check_property( |
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diff
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|
2514 valid_cp_range(bootstrap_method_index, cp_size) && |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
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|
2515 cp->tag_at(bootstrap_method_index).is_method_handle(), |
dad31fc330cd
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diff
changeset
|
2516 "bootstrap_method_index %u has bad constant type in class file %s", |
2085 | 2517 bootstrap_method_index, |
2011
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diff
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|
2518 CHECK); |
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diff
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|
2519 operands->short_at_put(operand_fill_index++, bootstrap_method_index); |
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diff
changeset
|
2520 operands->short_at_put(operand_fill_index++, argument_count); |
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diff
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|
2521 |
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diff
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|
2522 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
dad31fc330cd
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diff
changeset
|
2523 for (int j = 0; j < argument_count; j++) { |
2085 | 2524 u2 argument_index = cfs->get_u2_fast(); |
2011
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jrose
parents:
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diff
changeset
|
2525 check_property( |
2085 | 2526 valid_cp_range(argument_index, cp_size) && |
2527 cp->tag_at(argument_index).is_loadable_constant(), | |
2011
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parents:
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diff
changeset
|
2528 "argument_index %u has bad constant type in class file %s", |
2085 | 2529 argument_index, |
2011
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jrose
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diff
changeset
|
2530 CHECK); |
2085 | 2531 operands->short_at_put(operand_fill_index++, argument_index); |
2011
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diff
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|
2532 } |
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diff
changeset
|
2533 } |
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diff
changeset
|
2534 |
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diff
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|
2535 assert(operand_fill_index == operands()->length(), "exact fill"); |
dad31fc330cd
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parents:
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diff
changeset
|
2536 assert(constantPoolOopDesc::operand_array_length(operands()) == attribute_array_length, "correct decode"); |
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diff
changeset
|
2537 |
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parents:
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diff
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|
2538 u1* current_end = cfs->current(); |
dad31fc330cd
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parents:
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diff
changeset
|
2539 guarantee_property(current_end == current_start + attribute_byte_length, |
dad31fc330cd
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jrose
parents:
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diff
changeset
|
2540 "Bad length on BootstrapMethods in class file %s", |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2541 CHECK); |
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jrose
parents:
1972
diff
changeset
|
2542 |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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parents:
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diff
changeset
|
2543 cp->set_operands(operands()); |
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jrose
parents:
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diff
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|
2544 } |
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diff
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|
2545 |
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diff
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|
2546 |
0 | 2547 void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { |
2548 ClassFileStream* cfs = stream(); | |
2549 // Set inner classes attribute to default sentinel | |
2550 k->set_inner_classes(Universe::the_empty_short_array()); | |
2551 cfs->guarantee_more(2, CHECK); // attributes_count | |
2552 u2 attributes_count = cfs->get_u2_fast(); | |
2553 bool parsed_sourcefile_attribute = false; | |
2554 bool parsed_innerclasses_attribute = false; | |
2555 bool parsed_enclosingmethod_attribute = false; | |
2011
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parents:
1972
diff
changeset
|
2556 bool parsed_bootstrap_methods_attribute = false; |
0 | 2557 u1* runtime_visible_annotations = NULL; |
2558 int runtime_visible_annotations_length = 0; | |
2559 u1* runtime_invisible_annotations = NULL; | |
2560 int runtime_invisible_annotations_length = 0; | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4755
diff
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|
2561 u1* inner_classes_attribute_start = NULL; |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2562 u4 inner_classes_attribute_length = 0; |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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diff
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|
2563 u2 enclosing_method_class_index = 0; |
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
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diff
changeset
|
2564 u2 enclosing_method_method_index = 0; |
0 | 2565 // Iterate over attributes |
2566 while (attributes_count--) { | |
2567 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
2568 u2 attribute_name_index = cfs->get_u2_fast(); | |
2569 u4 attribute_length = cfs->get_u4_fast(); | |
2570 check_property( | |
2571 valid_cp_range(attribute_name_index, cp->length()) && | |
2572 cp->tag_at(attribute_name_index).is_utf8(), | |
2573 "Attribute name has bad constant pool index %u in class file %s", | |
2574 attribute_name_index, CHECK); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2575 Symbol* tag = cp->symbol_at(attribute_name_index); |
0 | 2576 if (tag == vmSymbols::tag_source_file()) { |
2577 // Check for SourceFile tag | |
2578 if (_need_verify) { | |
2579 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
2580 } | |
2581 if (parsed_sourcefile_attribute) { | |
2582 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
2583 } else { | |
2584 parsed_sourcefile_attribute = true; | |
2585 } | |
2586 parse_classfile_sourcefile_attribute(cp, k, CHECK); | |
2587 } else if (tag == vmSymbols::tag_source_debug_extension()) { | |
2588 // Check for SourceDebugExtension tag | |
2589 parse_classfile_source_debug_extension_attribute(cp, k, (int)attribute_length, CHECK); | |
2590 } else if (tag == vmSymbols::tag_inner_classes()) { | |
2591 // Check for InnerClasses tag | |
2592 if (parsed_innerclasses_attribute) { | |
2593 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
2594 } else { | |
2595 parsed_innerclasses_attribute = true; | |
2596 } | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
4755
diff
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|
2597 inner_classes_attribute_start = cfs->get_u1_buffer(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2598 inner_classes_attribute_length = attribute_length; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
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parents:
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diff
changeset
|
2599 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
0 | 2600 } else if (tag == vmSymbols::tag_synthetic()) { |
2601 // Check for Synthetic tag | |
2602 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
2603 if (attribute_length != 0) { | |
2604 classfile_parse_error( | |
2605 "Invalid Synthetic classfile attribute length %u in class file %s", | |
2606 attribute_length, CHECK); | |
2607 } | |
2608 parse_classfile_synthetic_attribute(cp, k, CHECK); | |
2609 } else if (tag == vmSymbols::tag_deprecated()) { | |
2610 // Check for Deprecatd tag - 4276120 | |
2611 if (attribute_length != 0) { | |
2612 classfile_parse_error( | |
2613 "Invalid Deprecated classfile attribute length %u in class file %s", | |
2614 attribute_length, CHECK); | |
2615 } | |
2616 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2617 if (tag == vmSymbols::tag_signature()) { | |
2618 if (attribute_length != 2) { | |
2619 classfile_parse_error( | |
2620 "Wrong Signature attribute length %u in class file %s", | |
2621 attribute_length, CHECK); | |
2622 } | |
2623 parse_classfile_signature_attribute(cp, k, CHECK); | |
2624 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { | |
2625 runtime_visible_annotations_length = attribute_length; | |
2626 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2627 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
2628 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
2629 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
2630 runtime_invisible_annotations_length = attribute_length; | |
2631 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2632 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2633 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
2634 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
2635 if (parsed_enclosingmethod_attribute) { | |
2636 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
2637 } else { | |
2638 parsed_enclosingmethod_attribute = true; | |
2639 } | |
2640 cfs->guarantee_more(4, CHECK); // class_index, method_index | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2641 enclosing_method_class_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2642 enclosing_method_method_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2643 if (enclosing_method_class_index == 0) { |
0 | 2644 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
2645 } | |
2646 // Validate the constant pool indices and types | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2647 if (!cp->is_within_bounds(enclosing_method_class_index) || |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2648 !is_klass_reference(cp, enclosing_method_class_index)) { |
0 | 2649 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
2650 } | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2651 if (enclosing_method_method_index != 0 && |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2652 (!cp->is_within_bounds(enclosing_method_method_index) || |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2653 !cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
0 | 2654 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
2655 } | |
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2656 } else if (tag == vmSymbols::tag_bootstrap_methods() && |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2657 _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2658 if (parsed_bootstrap_methods_attribute) |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2659 classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2660 parsed_bootstrap_methods_attribute = true; |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2661 parse_classfile_bootstrap_methods_attribute(cp, k, attribute_length, CHECK); |
0 | 2662 } else { |
2663 // Unknown attribute | |
2664 cfs->skip_u1(attribute_length, CHECK); | |
2665 } | |
2666 } else { | |
2667 // Unknown attribute | |
2668 cfs->skip_u1(attribute_length, CHECK); | |
2669 } | |
2670 } | |
2671 typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations, | |
2672 runtime_visible_annotations_length, | |
2673 runtime_invisible_annotations, | |
2674 runtime_invisible_annotations_length, | |
2675 CHECK); | |
2676 k->set_class_annotations(annotations()); | |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2677 |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2678 if (parsed_innerclasses_attribute || parsed_enclosingmethod_attribute) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2679 u2 num_of_classes = parse_classfile_inner_classes_attribute( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2680 inner_classes_attribute_start, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2681 parsed_innerclasses_attribute, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2682 enclosing_method_class_index, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2683 enclosing_method_method_index, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2684 cp, k, CHECK); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2685 if (parsed_innerclasses_attribute &&_need_verify && _major_version >= JAVA_1_5_VERSION) { |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2686 guarantee_property( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2687 inner_classes_attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2688 "Wrong InnerClasses attribute length in class file %s", CHECK); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2689 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2690 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2691 |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2692 if (_max_bootstrap_specifier_index >= 0) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2693 guarantee_property(parsed_bootstrap_methods_attribute, |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2694 "Missing BootstrapMethods attribute in class file %s", CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2695 } |
0 | 2696 } |
2697 | |
2698 | |
2699 typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, | |
2700 int runtime_visible_annotations_length, | |
2701 u1* runtime_invisible_annotations, | |
2702 int runtime_invisible_annotations_length, TRAPS) { | |
2703 typeArrayHandle annotations; | |
2704 if (runtime_visible_annotations != NULL || | |
2705 runtime_invisible_annotations != NULL) { | |
2706 typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length + | |
2707 runtime_invisible_annotations_length, CHECK_(annotations)); | |
2708 annotations = typeArrayHandle(THREAD, anno); | |
2709 if (runtime_visible_annotations != NULL) { | |
2710 memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length); | |
2711 } | |
2712 if (runtime_invisible_annotations != NULL) { | |
2713 memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length); | |
2714 } | |
2715 } | |
2716 return annotations; | |
2717 } | |
2718 | |
2719 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2720 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
0 | 2721 Handle class_loader, |
2722 Handle protection_domain, | |
710 | 2723 KlassHandle host_klass, |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2724 GrowableArray<Handle>* cp_patches, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2725 TempNewSymbol& parsed_name, |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
2726 bool verify, |
0 | 2727 TRAPS) { |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2728 // When a retransformable agent is attached, JVMTI caches the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2729 // class bytes that existed before the first retransformation. |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2730 // If RedefineClasses() was used before the retransformable |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2731 // agent attached, then the cached class bytes may not be the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
2732 // original class bytes. |
0 | 2733 unsigned char *cached_class_file_bytes = NULL; |
2734 jint cached_class_file_length; | |
2735 | |
2736 ClassFileStream* cfs = stream(); | |
2737 // Timing | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2738 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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2739 JavaThread* jt = (JavaThread*) THREAD; |
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2740 |
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2741 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
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2742 ClassLoader::perf_class_parse_selftime(), |
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2743 NULL, |
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2744 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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2745 jt->get_thread_stat()->perf_timers_addr(), |
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2746 PerfClassTraceTime::PARSE_CLASS); |
0 | 2747 |
2748 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; | |
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2749 _max_bootstrap_specifier_index = -1; |
0 | 2750 |
2751 if (JvmtiExport::should_post_class_file_load_hook()) { | |
4751
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2752 // Get the cached class file bytes (if any) from the class that |
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2753 // is being redefined or retransformed. We use jvmti_thread_state() |
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2754 // instead of JvmtiThreadState::state_for(jt) so we don't allocate |
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2755 // a JvmtiThreadState any earlier than necessary. This will help |
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2756 // avoid the bug described by 7126851. |
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2757 JvmtiThreadState *state = jt->jvmti_thread_state(); |
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2758 if (state != NULL) { |
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2759 KlassHandle *h_class_being_redefined = |
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2760 state->get_class_being_redefined(); |
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2761 if (h_class_being_redefined != NULL) { |
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2762 instanceKlassHandle ikh_class_being_redefined = |
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2763 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
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2764 cached_class_file_bytes = |
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2765 ikh_class_being_redefined->get_cached_class_file_bytes(); |
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2766 cached_class_file_length = |
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2767 ikh_class_being_redefined->get_cached_class_file_len(); |
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2768 } |
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|
2769 } |
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|
2770 |
0 | 2771 unsigned char* ptr = cfs->buffer(); |
2772 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
2773 | |
2774 JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain, | |
2775 &ptr, &end_ptr, | |
2776 &cached_class_file_bytes, | |
2777 &cached_class_file_length); | |
2778 | |
2779 if (ptr != cfs->buffer()) { | |
2780 // JVMTI agent has modified class file data. | |
2781 // Set new class file stream using JVMTI agent modified | |
2782 // class file data. | |
2783 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
2784 set_stream(cfs); | |
2785 } | |
2786 } | |
2787 | |
710 | 2788 _host_klass = host_klass; |
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2789 _cp_patches = cp_patches; |
0 | 2790 |
2791 instanceKlassHandle nullHandle; | |
2792 | |
2793 // Figure out whether we can skip format checking (matching classic VM behavior) | |
973
ad6585fd4087
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|
2794 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
0 | 2795 |
2796 // Set the verify flag in stream | |
2797 cfs->set_verify(_need_verify); | |
2798 | |
2799 // Save the class file name for easier error message printing. | |
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2800 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
0 | 2801 |
2802 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
2803 // Magic value | |
2804 u4 magic = cfs->get_u4_fast(); | |
2805 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
2806 "Incompatible magic value %u in class file %s", | |
2807 magic, CHECK_(nullHandle)); | |
2808 | |
2809 // Version numbers | |
2810 u2 minor_version = cfs->get_u2_fast(); | |
2811 u2 major_version = cfs->get_u2_fast(); | |
2812 | |
2813 // Check version numbers - we check this even with verifier off | |
2814 if (!is_supported_version(major_version, minor_version)) { | |
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2815 if (name == NULL) { |
0 | 2816 Exceptions::fthrow( |
2817 THREAD_AND_LOCATION, | |
2177
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2818 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 2819 "Unsupported major.minor version %u.%u", |
2820 major_version, | |
2821 minor_version); | |
2822 } else { | |
2823 ResourceMark rm(THREAD); | |
2824 Exceptions::fthrow( | |
2825 THREAD_AND_LOCATION, | |
2177
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2826 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 2827 "%s : Unsupported major.minor version %u.%u", |
2828 name->as_C_string(), | |
2829 major_version, | |
2830 minor_version); | |
2831 } | |
2832 return nullHandle; | |
2833 } | |
2834 | |
2835 _major_version = major_version; | |
2836 _minor_version = minor_version; | |
2837 | |
2838 | |
2839 // Check if verification needs to be relaxed for this class file | |
2840 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
2841 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
2842 | |
2843 // Constant pool | |
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2844 constantPoolHandle cp = parse_constant_pool(class_loader, CHECK_(nullHandle)); |
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2845 ConstantPoolCleaner error_handler(cp); // set constant pool to be cleaned up. |
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2846 |
0 | 2847 int cp_size = cp->length(); |
2848 | |
2849 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
2850 | |
2851 // Access flags | |
2852 AccessFlags access_flags; | |
2853 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
2854 | |
2855 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2856 // Set abstract bit for old class files for backward compatibility | |
2857 flags |= JVM_ACC_ABSTRACT; | |
2858 } | |
2859 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
2860 access_flags.set_flags(flags); | |
2861 | |
2862 // This class and superclass | |
2863 instanceKlassHandle super_klass; | |
2864 u2 this_class_index = cfs->get_u2_fast(); | |
2865 check_property( | |
2866 valid_cp_range(this_class_index, cp_size) && | |
2867 cp->tag_at(this_class_index).is_unresolved_klass(), | |
2868 "Invalid this class index %u in constant pool in class file %s", | |
2869 this_class_index, CHECK_(nullHandle)); | |
2870 | |
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2871 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
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2872 assert(class_name != NULL, "class_name can't be null"); |
0 | 2873 |
2874 // It's important to set parsed_name *before* resolving the super class. | |
2875 // (it's used for cleanup by the caller if parsing fails) | |
2876 parsed_name = class_name; | |
2177
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2877 // parsed_name is returned and can be used if there's an error, so add to |
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2878 // its reference count. Caller will decrement the refcount. |
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|
2879 parsed_name->increment_refcount(); |
0 | 2880 |
2881 // Update _class_name which could be null previously to be class_name | |
2882 _class_name = class_name; | |
2883 | |
2884 // Don't need to check whether this class name is legal or not. | |
2885 // It has been checked when constant pool is parsed. | |
2886 // However, make sure it is not an array type. | |
2887 if (_need_verify) { | |
2888 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
2889 "Bad class name in class file %s", | |
2890 CHECK_(nullHandle)); | |
2891 } | |
2892 | |
2893 klassOop preserve_this_klass; // for storing result across HandleMark | |
2894 | |
2895 // release all handles when parsing is done | |
2896 { HandleMark hm(THREAD); | |
2897 | |
2898 // Checks if name in class file matches requested name | |
2177
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2899 if (name != NULL && class_name != name) { |
0 | 2900 ResourceMark rm(THREAD); |
2901 Exceptions::fthrow( | |
2902 THREAD_AND_LOCATION, | |
2177
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2903 vmSymbols::java_lang_NoClassDefFoundError(), |
0 | 2904 "%s (wrong name: %s)", |
2905 name->as_C_string(), | |
2906 class_name->as_C_string() | |
2907 ); | |
2908 return nullHandle; | |
2909 } | |
2910 | |
2911 if (TraceClassLoadingPreorder) { | |
2177
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2912 tty->print("[Loading %s", name->as_klass_external_name()); |
0 | 2913 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
2914 tty->print_cr("]"); | |
2915 } | |
2916 | |
2917 u2 super_class_index = cfs->get_u2_fast(); | |
2918 if (super_class_index == 0) { | |
2177
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2919 check_property(class_name == vmSymbols::java_lang_Object(), |
0 | 2920 "Invalid superclass index %u in class file %s", |
2921 super_class_index, | |
2922 CHECK_(nullHandle)); | |
2923 } else { | |
2924 check_property(valid_cp_range(super_class_index, cp_size) && | |
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2925 is_klass_reference(cp, super_class_index), |
0 | 2926 "Invalid superclass index %u in class file %s", |
2927 super_class_index, | |
2928 CHECK_(nullHandle)); | |
2929 // The class name should be legal because it is checked when parsing constant pool. | |
2930 // However, make sure it is not an array type. | |
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2931 bool is_array = false; |
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2932 if (cp->tag_at(super_class_index).is_klass()) { |
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2933 super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
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2934 if (_need_verify) |
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2935 is_array = super_klass->oop_is_array(); |
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|
2936 } else if (_need_verify) { |
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2937 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
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2938 } |
0 | 2939 if (_need_verify) { |
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2940 guarantee_property(!is_array, |
0 | 2941 "Bad superclass name in class file %s", CHECK_(nullHandle)); |
2942 } | |
2943 } | |
2944 | |
2945 // Interfaces | |
2946 u2 itfs_len = cfs->get_u2_fast(); | |
2947 objArrayHandle local_interfaces; | |
2948 if (itfs_len == 0) { | |
2949 local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
2950 } else { | |
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2951 local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, _class_name, CHECK_(nullHandle)); |
0 | 2952 } |
2953 | |
4744
cd5d8cafcc84
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|
2954 u2 java_fields_count = 0; |
0 | 2955 // Fields (offsets are filled in later) |
3938 | 2956 FieldAllocationCount fac; |
0 | 2957 objArrayHandle fields_annotations; |
3938 | 2958 typeArrayHandle fields = parse_fields(class_name, cp, access_flags.is_interface(), &fac, &fields_annotations, |
2959 &java_fields_count, | |
2960 CHECK_(nullHandle)); | |
0 | 2961 // Methods |
2962 bool has_final_method = false; | |
2963 AccessFlags promoted_flags; | |
2964 promoted_flags.set_flags(0); | |
2965 // These need to be oop pointers because they are allocated lazily | |
2966 // inside parse_methods inside a nested HandleMark | |
2967 objArrayOop methods_annotations_oop = NULL; | |
2968 objArrayOop methods_parameter_annotations_oop = NULL; | |
2969 objArrayOop methods_default_annotations_oop = NULL; | |
2970 objArrayHandle methods = parse_methods(cp, access_flags.is_interface(), | |
2971 &promoted_flags, | |
2972 &has_final_method, | |
2973 &methods_annotations_oop, | |
2974 &methods_parameter_annotations_oop, | |
2975 &methods_default_annotations_oop, | |
2976 CHECK_(nullHandle)); | |
2977 | |
2978 objArrayHandle methods_annotations(THREAD, methods_annotations_oop); | |
2979 objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop); | |
2980 objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop); | |
2981 | |
2982 // We check super class after class file is parsed and format is checked | |
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2983 if (super_class_index > 0 && super_klass.is_null()) { |
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2984 Symbol* sk = cp->klass_name_at(super_class_index); |
0 | 2985 if (access_flags.is_interface()) { |
2986 // Before attempting to resolve the superclass, check for class format | |
2987 // errors not checked yet. | |
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2988 guarantee_property(sk == vmSymbols::java_lang_Object(), |
0 | 2989 "Interfaces must have java.lang.Object as superclass in class file %s", |
2990 CHECK_(nullHandle)); | |
2991 } | |
2992 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, | |
2993 sk, | |
2994 class_loader, | |
2995 protection_domain, | |
2996 true, | |
2997 CHECK_(nullHandle)); | |
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2998 |
0 | 2999 KlassHandle kh (THREAD, k); |
3000 super_klass = instanceKlassHandle(THREAD, kh()); | |
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|
3001 if (LinkWellKnownClasses) // my super class is well known to me |
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3002 cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve |
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3003 } |
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3004 if (super_klass.not_null()) { |
0 | 3005 if (super_klass->is_interface()) { |
3006 ResourceMark rm(THREAD); | |
3007 Exceptions::fthrow( | |
3008 THREAD_AND_LOCATION, | |
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3009 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 3010 "class %s has interface %s as super class", |
3011 class_name->as_klass_external_name(), | |
3012 super_klass->external_name() | |
3013 ); | |
3014 return nullHandle; | |
3015 } | |
3016 // Make sure super class is not final | |
3017 if (super_klass->is_final()) { | |
3018 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
3019 } | |
3020 } | |
3021 | |
3022 // Compute the transitive list of all unique interfaces implemented by this class | |
3023 objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); | |
3024 | |
3025 // sort methods | |
3026 typeArrayHandle method_ordering = sort_methods(methods, | |
3027 methods_annotations, | |
3028 methods_parameter_annotations, | |
3029 methods_default_annotations, | |
3030 CHECK_(nullHandle)); | |
3031 | |
3032 // promote flags from parse_methods() to the klass' flags | |
3033 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
3034 | |
3035 // Size of Java vtable (in words) | |
3036 int vtable_size = 0; | |
3037 int itable_size = 0; | |
3038 int num_miranda_methods = 0; | |
3039 | |
3040 klassVtable::compute_vtable_size_and_num_mirandas(vtable_size, | |
3041 num_miranda_methods, | |
3042 super_klass(), | |
3043 methods(), | |
3044 access_flags, | |
652
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3045 class_loader, |
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3046 class_name, |
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3047 local_interfaces(), |
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3048 CHECK_(nullHandle)); |
0 | 3049 |
3050 // Size of Java itable (in words) | |
3051 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
3052 | |
3053 // Field size and offset computation | |
3054 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
3055 #ifndef PRODUCT | |
3056 int orig_nonstatic_field_size = 0; | |
3057 #endif | |
3058 int static_field_size = 0; | |
3059 int next_static_oop_offset; | |
3060 int next_static_double_offset; | |
3061 int next_static_word_offset; | |
3062 int next_static_short_offset; | |
3063 int next_static_byte_offset; | |
3064 int next_static_type_offset; | |
3065 int next_nonstatic_oop_offset; | |
3066 int next_nonstatic_double_offset; | |
3067 int next_nonstatic_word_offset; | |
3068 int next_nonstatic_short_offset; | |
3069 int next_nonstatic_byte_offset; | |
3070 int next_nonstatic_type_offset; | |
3071 int first_nonstatic_oop_offset; | |
3072 int first_nonstatic_field_offset; | |
3073 int next_nonstatic_field_offset; | |
3074 | |
3075 // Calculate the starting byte offsets | |
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3076 next_static_oop_offset = instanceMirrorKlass::offset_of_static_fields(); |
0 | 3077 next_static_double_offset = next_static_oop_offset + |
3938 | 3078 (fac.count[STATIC_OOP] * heapOopSize); |
3079 if ( fac.count[STATIC_DOUBLE] && | |
0 | 3080 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
3081 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
3082 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
3083 } | |
3084 | |
3085 next_static_word_offset = next_static_double_offset + | |
3938 | 3086 (fac.count[STATIC_DOUBLE] * BytesPerLong); |
0 | 3087 next_static_short_offset = next_static_word_offset + |
3938 | 3088 (fac.count[STATIC_WORD] * BytesPerInt); |
0 | 3089 next_static_byte_offset = next_static_short_offset + |
3938 | 3090 (fac.count[STATIC_SHORT] * BytesPerShort); |
0 | 3091 next_static_type_offset = align_size_up((next_static_byte_offset + |
3938 | 3092 fac.count[STATIC_BYTE] ), wordSize ); |
0 | 3093 static_field_size = (next_static_type_offset - |
3094 next_static_oop_offset) / wordSize; | |
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3095 |
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3096 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
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3097 nonstatic_field_size * heapOopSize; |
0 | 3098 next_nonstatic_field_offset = first_nonstatic_field_offset; |
3099 | |
3938 | 3100 unsigned int nonstatic_double_count = fac.count[NONSTATIC_DOUBLE]; |
3101 unsigned int nonstatic_word_count = fac.count[NONSTATIC_WORD]; | |
3102 unsigned int nonstatic_short_count = fac.count[NONSTATIC_SHORT]; | |
3103 unsigned int nonstatic_byte_count = fac.count[NONSTATIC_BYTE]; | |
3104 unsigned int nonstatic_oop_count = fac.count[NONSTATIC_OOP]; | |
0 | 3105 |
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3106 bool super_has_nonstatic_fields = |
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3107 (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
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3108 bool has_nonstatic_fields = super_has_nonstatic_fields || |
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3109 ((nonstatic_double_count + nonstatic_word_count + |
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3110 nonstatic_short_count + nonstatic_byte_count + |
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3111 nonstatic_oop_count) != 0); |
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3112 |
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3113 |
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3114 // Prepare list of oops for oop map generation. |
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3115 int* nonstatic_oop_offsets; |
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3116 unsigned int* nonstatic_oop_counts; |
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3117 unsigned int nonstatic_oop_map_count = 0; |
0 | 3118 |
3119 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
939
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3120 THREAD, int, nonstatic_oop_count + 1); |
938 | 3121 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
939
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3122 THREAD, unsigned int, nonstatic_oop_count + 1); |
0 | 3123 |
3938 | 3124 first_nonstatic_oop_offset = 0; // will be set for first oop field |
0 | 3125 |
3126 #ifndef PRODUCT | |
3127 if( PrintCompactFieldsSavings ) { | |
3128 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
113
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3129 (nonstatic_oop_count * heapOopSize); |
0 | 3130 if ( nonstatic_double_count > 0 ) { |
3131 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
3132 } | |
3133 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3134 (nonstatic_double_count * BytesPerLong); | |
3135 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3136 (nonstatic_word_count * BytesPerInt); | |
3137 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3138 (nonstatic_short_count * BytesPerShort); | |
3139 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
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3140 nonstatic_byte_count ), heapOopSize ); |
0 | 3141 orig_nonstatic_field_size = nonstatic_field_size + |
165
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3142 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
0 | 3143 } |
3144 #endif | |
3145 bool compact_fields = CompactFields; | |
3146 int allocation_style = FieldsAllocationStyle; | |
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3147 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
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3148 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
0 | 3149 allocation_style = 1; // Optimistic |
3150 } | |
3151 | |
3152 // The next classes have predefined hard-coded fields offsets | |
3153 // (see in JavaClasses::compute_hard_coded_offsets()). | |
3154 // Use default fields allocation order for them. | |
3155 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && | |
2177
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3156 (class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
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3157 class_name == vmSymbols::java_lang_Class() || |
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3158 class_name == vmSymbols::java_lang_ClassLoader() || |
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3159 class_name == vmSymbols::java_lang_ref_Reference() || |
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3160 class_name == vmSymbols::java_lang_ref_SoftReference() || |
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3161 class_name == vmSymbols::java_lang_StackTraceElement() || |
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3162 class_name == vmSymbols::java_lang_String() || |
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3163 class_name == vmSymbols::java_lang_Throwable() || |
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3164 class_name == vmSymbols::java_lang_Boolean() || |
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3165 class_name == vmSymbols::java_lang_Character() || |
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3166 class_name == vmSymbols::java_lang_Float() || |
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3167 class_name == vmSymbols::java_lang_Double() || |
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3168 class_name == vmSymbols::java_lang_Byte() || |
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3169 class_name == vmSymbols::java_lang_Short() || |
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3170 class_name == vmSymbols::java_lang_Integer() || |
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3171 class_name == vmSymbols::java_lang_Long())) { |
0 | 3172 allocation_style = 0; // Allocate oops first |
3173 compact_fields = false; // Don't compact fields | |
3174 } | |
3175 | |
3176 if( allocation_style == 0 ) { | |
3177 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes | |
3178 next_nonstatic_oop_offset = next_nonstatic_field_offset; | |
3179 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
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3180 (nonstatic_oop_count * heapOopSize); |
0 | 3181 } else if( allocation_style == 1 ) { |
3182 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops | |
3183 next_nonstatic_double_offset = next_nonstatic_field_offset; | |
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3184 } else if( allocation_style == 2 ) { |
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3185 // Fields allocation: oops fields in super and sub classes are together. |
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3186 if( nonstatic_field_size > 0 && super_klass() != NULL && |
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3187 super_klass->nonstatic_oop_map_size() > 0 ) { |
3786
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3188 int map_count = super_klass->nonstatic_oop_map_count(); |
1366
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3189 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
3786
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3190 OopMapBlock* last_map = first_map + map_count - 1; |
1366
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3191 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
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3192 if (next_offset == next_nonstatic_field_offset) { |
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3193 allocation_style = 0; // allocate oops first |
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3194 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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3195 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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3196 (nonstatic_oop_count * heapOopSize); |
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3197 } |
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3198 } |
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3199 if( allocation_style == 2 ) { |
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3200 allocation_style = 1; // allocate oops last |
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3201 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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3202 } |
0 | 3203 } else { |
3204 ShouldNotReachHere(); | |
3205 } | |
3206 | |
3207 int nonstatic_oop_space_count = 0; | |
3208 int nonstatic_word_space_count = 0; | |
3209 int nonstatic_short_space_count = 0; | |
3210 int nonstatic_byte_space_count = 0; | |
3211 int nonstatic_oop_space_offset; | |
3212 int nonstatic_word_space_offset; | |
3213 int nonstatic_short_space_offset; | |
3214 int nonstatic_byte_space_offset; | |
3215 | |
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3216 if( nonstatic_double_count > 0 ) { |
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3217 int offset = next_nonstatic_double_offset; |
0 | 3218 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
3219 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
3220 // Allocate available fields into the gap before double field. | |
3221 int length = next_nonstatic_double_offset - offset; | |
3222 assert(length == BytesPerInt, ""); | |
3223 nonstatic_word_space_offset = offset; | |
3224 if( nonstatic_word_count > 0 ) { | |
3225 nonstatic_word_count -= 1; | |
3226 nonstatic_word_space_count = 1; // Only one will fit | |
3227 length -= BytesPerInt; | |
3228 offset += BytesPerInt; | |
3229 } | |
3230 nonstatic_short_space_offset = offset; | |
3231 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
3232 nonstatic_short_count -= 1; | |
3233 nonstatic_short_space_count += 1; | |
3234 length -= BytesPerShort; | |
3235 offset += BytesPerShort; | |
3236 } | |
3237 nonstatic_byte_space_offset = offset; | |
3238 while( length > 0 && nonstatic_byte_count > 0 ) { | |
3239 nonstatic_byte_count -= 1; | |
3240 nonstatic_byte_space_count += 1; | |
3241 length -= 1; | |
3242 } | |
3243 // Allocate oop field in the gap if there are no other fields for that. | |
3244 nonstatic_oop_space_offset = offset; | |
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3245 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
0 | 3246 allocation_style != 0 ) { // when oop fields not first |
3247 nonstatic_oop_count -= 1; | |
3248 nonstatic_oop_space_count = 1; // Only one will fit | |
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3249 length -= heapOopSize; |
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3250 offset += heapOopSize; |
0 | 3251 } |
3252 } | |
3253 } | |
3254 | |
3255 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3256 (nonstatic_double_count * BytesPerLong); | |
3257 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3258 (nonstatic_word_count * BytesPerInt); | |
3259 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3260 (nonstatic_short_count * BytesPerShort); | |
3261 | |
3262 int notaligned_offset; | |
3263 if( allocation_style == 0 ) { | |
3264 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
3265 } else { // allocation_style == 1 | |
3266 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
3267 if( nonstatic_oop_count > 0 ) { | |
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3268 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
0 | 3269 } |
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3270 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
0 | 3271 } |
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3272 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
0 | 3273 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
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3274 - first_nonstatic_field_offset)/heapOopSize); |
0 | 3275 |
3276 // Iterate over fields again and compute correct offsets. | |
3277 // The field allocation type was temporarily stored in the offset slot. | |
3278 // oop fields are located before non-oop fields (static and non-static). | |
3938 | 3279 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
0 | 3280 int real_offset; |
3938 | 3281 FieldAllocationType atype = (FieldAllocationType) fs.offset(); |
0 | 3282 switch (atype) { |
3283 case STATIC_OOP: | |
3284 real_offset = next_static_oop_offset; | |
113
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diff
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|
3285 next_static_oop_offset += heapOopSize; |
0 | 3286 break; |
3287 case STATIC_BYTE: | |
3288 real_offset = next_static_byte_offset; | |
3289 next_static_byte_offset += 1; | |
3290 break; | |
3291 case STATIC_SHORT: | |
3292 real_offset = next_static_short_offset; | |
3293 next_static_short_offset += BytesPerShort; | |
3294 break; | |
3295 case STATIC_WORD: | |
3296 real_offset = next_static_word_offset; | |
3297 next_static_word_offset += BytesPerInt; | |
3298 break; | |
3299 case STATIC_DOUBLE: | |
3300 real_offset = next_static_double_offset; | |
3301 next_static_double_offset += BytesPerLong; | |
3302 break; | |
3303 case NONSTATIC_OOP: | |
3304 if( nonstatic_oop_space_count > 0 ) { | |
3305 real_offset = nonstatic_oop_space_offset; | |
113
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diff
changeset
|
3306 nonstatic_oop_space_offset += heapOopSize; |
0 | 3307 nonstatic_oop_space_count -= 1; |
3308 } else { | |
3309 real_offset = next_nonstatic_oop_offset; | |
113
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parents:
92
diff
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|
3310 next_nonstatic_oop_offset += heapOopSize; |
0 | 3311 } |
3312 // Update oop maps | |
3313 if( nonstatic_oop_map_count > 0 && | |
3314 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
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938
diff
changeset
|
3315 real_offset - |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
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938
diff
changeset
|
3316 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3317 heapOopSize ) { |
0 | 3318 // Extend current oop map |
938 | 3319 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
0 | 3320 } else { |
3321 // Create new oop map | |
939
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6845368: large objects cause a crash or unexpected exception
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parents:
938
diff
changeset
|
3322 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
938 | 3323 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
0 | 3324 nonstatic_oop_map_count += 1; |
3325 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
3326 first_nonstatic_oop_offset = real_offset; | |
3327 } | |
3328 } | |
3329 break; | |
3330 case NONSTATIC_BYTE: | |
3331 if( nonstatic_byte_space_count > 0 ) { | |
3332 real_offset = nonstatic_byte_space_offset; | |
3333 nonstatic_byte_space_offset += 1; | |
3334 nonstatic_byte_space_count -= 1; | |
3335 } else { | |
3336 real_offset = next_nonstatic_byte_offset; | |
3337 next_nonstatic_byte_offset += 1; | |
3338 } | |
3339 break; | |
3340 case NONSTATIC_SHORT: | |
3341 if( nonstatic_short_space_count > 0 ) { | |
3342 real_offset = nonstatic_short_space_offset; | |
3343 nonstatic_short_space_offset += BytesPerShort; | |
3344 nonstatic_short_space_count -= 1; | |
3345 } else { | |
3346 real_offset = next_nonstatic_short_offset; | |
3347 next_nonstatic_short_offset += BytesPerShort; | |
3348 } | |
3349 break; | |
3350 case NONSTATIC_WORD: | |
3351 if( nonstatic_word_space_count > 0 ) { | |
3352 real_offset = nonstatic_word_space_offset; | |
3353 nonstatic_word_space_offset += BytesPerInt; | |
3354 nonstatic_word_space_count -= 1; | |
3355 } else { | |
3356 real_offset = next_nonstatic_word_offset; | |
3357 next_nonstatic_word_offset += BytesPerInt; | |
3358 } | |
3359 break; | |
3360 case NONSTATIC_DOUBLE: | |
3361 real_offset = next_nonstatic_double_offset; | |
3362 next_nonstatic_double_offset += BytesPerLong; | |
3363 break; | |
3364 default: | |
3365 ShouldNotReachHere(); | |
3366 } | |
3938 | 3367 fs.set_offset(real_offset); |
0 | 3368 } |
3369 | |
3370 // Size of instances | |
3371 int instance_size; | |
3372 | |
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136
diff
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|
3373 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
0 | 3374 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
3375 | |
165
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|
3376 assert(instance_size == align_object_size(align_size_up((instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize), wordSize) / wordSize), "consistent layout helper value"); |
0 | 3377 |
938 | 3378 // Number of non-static oop map blocks allocated at end of klass. |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3379 const unsigned int total_oop_map_count = |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3380 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3381 first_nonstatic_oop_offset); |
0 | 3382 |
3383 // Compute reference type | |
3384 ReferenceType rt; | |
3385 if (super_klass() == NULL) { | |
3386 rt = REF_NONE; | |
3387 } else { | |
3388 rt = super_klass->reference_type(); | |
3389 } | |
3390 | |
3391 // We can now create the basic klassOop for this klass | |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3392 klassOop ik = oopFactory::new_instanceKlass(name, vtable_size, itable_size, |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3393 static_field_size, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3394 total_oop_map_count, |
5998
49036505ab5f
7154670: The instanceKlass _implementors[] and _nof_implementors are not needed for non-interface klass.
jiangli
parents:
5967
diff
changeset
|
3395 access_flags, |
6038
8bafad97cd26
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
jiangli
parents:
6000
diff
changeset
|
3396 rt, host_klass, |
8bafad97cd26
7158552: The instanceKlsss::_host_klass is only needed for anonymous class for JSR 292 support.
jiangli
parents:
6000
diff
changeset
|
3397 CHECK_(nullHandle)); |
0 | 3398 instanceKlassHandle this_klass (THREAD, ik); |
3399 | |
938 | 3400 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
3401 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
3402 "sanity"); | |
0 | 3403 |
3404 // Fill in information already parsed | |
975 | 3405 this_klass->set_should_verify_class(verify); |
0 | 3406 jint lh = Klass::instance_layout_helper(instance_size, false); |
3407 this_klass->set_layout_helper(lh); | |
3408 assert(this_klass->oop_is_instance(), "layout is correct"); | |
3409 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
3410 // Not yet: supers are done below to support the new subtype-checking fields | |
3411 //this_klass->set_super(super_klass()); | |
3412 this_klass->set_class_loader(class_loader()); | |
3413 this_klass->set_nonstatic_field_size(nonstatic_field_size); | |
975 | 3414 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
3938 | 3415 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
0 | 3416 cp->set_pool_holder(this_klass()); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3417 error_handler.set_in_error(false); // turn off error handler for cp |
0 | 3418 this_klass->set_constants(cp()); |
3419 this_klass->set_local_interfaces(local_interfaces()); | |
3938 | 3420 this_klass->set_fields(fields(), java_fields_count); |
0 | 3421 this_klass->set_methods(methods()); |
3422 if (has_final_method) { | |
3423 this_klass->set_has_final_method(); | |
3424 } | |
3425 this_klass->set_method_ordering(method_ordering()); | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3426 // The instanceKlass::_methods_jmethod_ids cache and the |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3427 // instanceKlass::_methods_cached_itable_indices cache are |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3428 // both managed on the assumption that the initial cache |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3429 // size is equal to the number of methods in the class. If |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3430 // that changes, then instanceKlass::idnum_can_increment() |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3431 // has to be changed accordingly. |
0 | 3432 this_klass->set_initial_method_idnum(methods->length()); |
3433 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
710 | 3434 if (LinkWellKnownClasses || is_anonymous()) // I am well known to myself |
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
3435 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
0 | 3436 this_klass->set_protection_domain(protection_domain()); |
3437 this_klass->set_fields_annotations(fields_annotations()); | |
3438 this_klass->set_methods_annotations(methods_annotations()); | |
3439 this_klass->set_methods_parameter_annotations(methods_parameter_annotations()); | |
3440 this_klass->set_methods_default_annotations(methods_default_annotations()); | |
3441 | |
3442 this_klass->set_minor_version(minor_version); | |
3443 this_klass->set_major_version(major_version); | |
3444 | |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3445 // Set up methodOop::intrinsic_id as soon as we know the names of methods. |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3446 // (We used to do this lazily, but now we query it in Rewriter, |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3447 // which is eagerly done for every method, so we might as well do it now, |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3448 // when everything is fresh in memory.) |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3449 if (methodOopDesc::klass_id_for_intrinsics(this_klass->as_klassOop()) != vmSymbols::NO_SID) { |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3450 for (int j = 0; j < methods->length(); j++) { |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3451 ((methodOop)methods->obj_at(j))->init_intrinsic_id(); |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3452 } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3453 } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3454 |
0 | 3455 if (cached_class_file_bytes != NULL) { |
3456 // JVMTI: we have an instanceKlass now, tell it about the cached bytes | |
3457 this_klass->set_cached_class_file(cached_class_file_bytes, | |
3458 cached_class_file_length); | |
3459 } | |
3460 | |
3461 // Miranda methods | |
3462 if ((num_miranda_methods > 0) || | |
3463 // if this class introduced new miranda methods or | |
3464 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
3465 // super class exists and this class inherited miranda methods | |
3466 ) { | |
3467 this_klass->set_has_miranda_methods(); // then set a flag | |
3468 } | |
3469 | |
3470 // Additional attributes | |
3471 parse_classfile_attributes(cp, this_klass, CHECK_(nullHandle)); | |
3472 | |
3473 // Make sure this is the end of class file stream | |
3474 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); | |
3475 | |
3476 // VerifyOops believes that once this has been set, the object is completely loaded. | |
3477 // Compute transitive closure of interfaces this class implements | |
3478 this_klass->set_transitive_interfaces(transitive_interfaces()); | |
3479 | |
3480 // Fill in information needed to compute superclasses. | |
3481 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
3482 | |
3483 // Initialize itable offset tables | |
3484 klassItable::setup_itable_offset_table(this_klass); | |
3485 | |
3486 // Do final class setup | |
938 | 3487 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
0 | 3488 |
3489 set_precomputed_flags(this_klass); | |
3490 | |
3491 // reinitialize modifiers, using the InnerClasses attribute | |
3492 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
3493 this_klass->set_modifier_flags(computed_modifiers); | |
3494 | |
3495 // check if this class can access its super class | |
3496 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
3497 | |
3498 // check if this class can access its superinterfaces | |
3499 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
3500 | |
3501 // check if this class overrides any final method | |
3502 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
3503 | |
3504 // check that if this class is an interface then it doesn't have static methods | |
3505 if (this_klass->is_interface()) { | |
3506 check_illegal_static_method(this_klass, CHECK_(nullHandle)); | |
3507 } | |
3508 | |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3509 // Allocate mirror and initialize static fields |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3510 java_lang_Class::create_mirror(this_klass, CHECK_(nullHandle)); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2357
diff
changeset
|
3511 |
0 | 3512 ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()), |
3513 false /* not shared class */); | |
3514 | |
3515 if (TraceClassLoading) { | |
3516 // print in a single call to reduce interleaving of output | |
3517 if (cfs->source() != NULL) { | |
3518 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
3519 cfs->source()); | |
3520 } else if (class_loader.is_null()) { | |
3521 if (THREAD->is_Java_thread()) { | |
3522 klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1); | |
3523 tty->print("[Loaded %s by instance of %s]\n", | |
3524 this_klass->external_name(), | |
3525 instanceKlass::cast(caller)->external_name()); | |
3526 } else { | |
3527 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
3528 } | |
3529 } else { | |
3530 ResourceMark rm; | |
3531 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
3532 instanceKlass::cast(class_loader->klass())->external_name()); | |
3533 } | |
3534 } | |
3535 | |
3536 if (TraceClassResolution) { | |
3537 // print out the superclass. | |
3538 const char * from = Klass::cast(this_klass())->external_name(); | |
3539 if (this_klass->java_super() != NULL) { | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3540 tty->print("RESOLVE %s %s (super)\n", from, instanceKlass::cast(this_klass->java_super())->external_name()); |
0 | 3541 } |
3542 // print out each of the interface classes referred to by this class. | |
3543 objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces()); | |
3544 if (!local_interfaces.is_null()) { | |
3545 int length = local_interfaces->length(); | |
3546 for (int i = 0; i < length; i++) { | |
3547 klassOop k = klassOop(local_interfaces->obj_at(i)); | |
3548 instanceKlass* to_class = instanceKlass::cast(k); | |
3549 const char * to = to_class->external_name(); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3550 tty->print("RESOLVE %s %s (interface)\n", from, to); |
0 | 3551 } |
3552 } | |
3553 } | |
3554 | |
3555 #ifndef PRODUCT | |
3556 if( PrintCompactFieldsSavings ) { | |
3557 if( nonstatic_field_size < orig_nonstatic_field_size ) { | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3558 tty->print("[Saved %d of %d bytes in %s]\n", |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3559 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3560 orig_nonstatic_field_size*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3561 this_klass->external_name()); |
0 | 3562 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3563 tty->print("[Wasted %d over %d bytes in %s]\n", |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3564 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3565 orig_nonstatic_field_size*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3566 this_klass->external_name()); |
0 | 3567 } |
3568 } | |
3569 #endif | |
3570 | |
3571 // preserve result across HandleMark | |
3572 preserve_this_klass = this_klass(); | |
3573 } | |
3574 | |
3575 // Create new handle outside HandleMark | |
3576 instanceKlassHandle this_klass (THREAD, preserve_this_klass); | |
3577 debug_only(this_klass->as_klassOop()->verify();) | |
3578 | |
3579 return this_klass; | |
3580 } | |
3581 | |
3582 | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3583 unsigned int |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3584 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3585 unsigned int nonstatic_oop_map_count, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3586 int first_nonstatic_oop_offset) { |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3587 unsigned int map_count = |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3588 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
0 | 3589 if (nonstatic_oop_map_count > 0) { |
3590 // We have oops to add to map | |
938 | 3591 if (map_count == 0) { |
3592 map_count = nonstatic_oop_map_count; | |
0 | 3593 } else { |
938 | 3594 // Check whether we should add a new map block or whether the last one can |
3595 // be extended | |
3596 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
3597 OopMapBlock* const last_map = first_map + map_count - 1; | |
3598 | |
3599 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
0 | 3600 if (next_offset == first_nonstatic_oop_offset) { |
3601 // There is no gap bettwen superklass's last oop field and first | |
3602 // local oop field, merge maps. | |
3603 nonstatic_oop_map_count -= 1; | |
3604 } else { | |
3605 // Superklass didn't end with a oop field, add extra maps | |
938 | 3606 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
0 | 3607 } |
938 | 3608 map_count += nonstatic_oop_map_count; |
0 | 3609 } |
3610 } | |
938 | 3611 return map_count; |
0 | 3612 } |
3613 | |
3614 | |
3615 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
939
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3616 unsigned int nonstatic_oop_map_count, |
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3617 int* nonstatic_oop_offsets, |
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3618 unsigned int* nonstatic_oop_counts) { |
0 | 3619 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
938 | 3620 const instanceKlass* const super = k->superklass(); |
939
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3621 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
938 | 3622 if (super_count > 0) { |
3623 // Copy maps from superklass | |
0 | 3624 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
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3625 for (unsigned int i = 0; i < super_count; ++i) { |
0 | 3626 *this_oop_map++ = *super_oop_map++; |
3627 } | |
3628 } | |
938 | 3629 |
0 | 3630 if (nonstatic_oop_map_count > 0) { |
938 | 3631 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
3632 // The counts differ because there is no gap between superklass's last oop | |
3633 // field and the first local oop field. Extend the last oop map copied | |
0 | 3634 // from the superklass instead of creating new one. |
3635 nonstatic_oop_map_count--; | |
3636 nonstatic_oop_offsets++; | |
3637 this_oop_map--; | |
938 | 3638 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
0 | 3639 this_oop_map++; |
3640 } | |
938 | 3641 |
0 | 3642 // Add new map blocks, fill them |
3643 while (nonstatic_oop_map_count-- > 0) { | |
3644 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
938 | 3645 this_oop_map->set_count(*nonstatic_oop_counts++); |
0 | 3646 this_oop_map++; |
3647 } | |
938 | 3648 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
3649 this_oop_map, "sanity"); | |
0 | 3650 } |
3651 } | |
3652 | |
3653 | |
3654 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
3655 klassOop super = k->super(); | |
3656 | |
3657 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
3658 // in which case we don't have to register objects as finalizable | |
3659 if (!_has_empty_finalizer) { | |
3660 if (_has_finalizer || | |
3661 (super != NULL && super->klass_part()->has_finalizer())) { | |
3662 k->set_has_finalizer(); | |
3663 } | |
3664 } | |
3665 | |
3666 #ifdef ASSERT | |
3667 bool f = false; | |
3668 methodOop m = k->lookup_method(vmSymbols::finalize_method_name(), | |
3669 vmSymbols::void_method_signature()); | |
3670 if (m != NULL && !m->is_empty_method()) { | |
3671 f = true; | |
3672 } | |
3673 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
3674 #endif | |
3675 | |
3676 // Check if this klass supports the java.lang.Cloneable interface | |
1142 | 3677 if (SystemDictionary::Cloneable_klass_loaded()) { |
3678 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
0 | 3679 k->set_is_cloneable(); |
3680 } | |
3681 } | |
3682 | |
3683 // Check if this klass has a vanilla default constructor | |
3684 if (super == NULL) { | |
3685 // java.lang.Object has empty default constructor | |
3686 k->set_has_vanilla_constructor(); | |
3687 } else { | |
3688 if (Klass::cast(super)->has_vanilla_constructor() && | |
3689 _has_vanilla_constructor) { | |
3690 k->set_has_vanilla_constructor(); | |
3691 } | |
3692 #ifdef ASSERT | |
3693 bool v = false; | |
3694 if (Klass::cast(super)->has_vanilla_constructor()) { | |
3695 methodOop constructor = k->find_method(vmSymbols::object_initializer_name( | |
3696 ), vmSymbols::void_method_signature()); | |
3697 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
3698 v = true; | |
3699 } | |
3700 } | |
3701 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
3702 #endif | |
3703 } | |
3704 | |
3705 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
3706 // See documentation of instanceKlass::can_be_fastpath_allocated(). | |
3707 assert(k->size_helper() > 0, "layout_helper is initialized"); | |
3708 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
3709 || k->is_abstract() || k->is_interface() | |
3710 || (k->name() == vmSymbols::java_lang_Class() | |
3711 && k->class_loader() == NULL) | |
3712 || k->size_helper() >= FastAllocateSizeLimit) { | |
3713 // Forbid fast-path allocation. | |
3714 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
3715 k->set_layout_helper(lh); | |
3716 } | |
3717 } | |
3718 | |
3719 | |
3720 // utility method for appending and array with check for duplicates | |
3721 | |
3722 void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) { | |
3723 // iterate over new interfaces | |
3724 for (int i = 0; i < ifs->length(); i++) { | |
3725 oop e = ifs->obj_at(i); | |
3726 assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking"); | |
3727 // check for duplicates | |
3728 bool duplicate = false; | |
3729 for (int j = 0; j < index; j++) { | |
3730 if (result->obj_at(j) == e) { | |
3731 duplicate = true; | |
3732 break; | |
3733 } | |
3734 } | |
3735 // add new interface | |
3736 if (!duplicate) { | |
3737 result->obj_at_put(index++, e); | |
3738 } | |
3739 } | |
3740 } | |
3741 | |
3742 objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) { | |
3743 // Compute maximum size for transitive interfaces | |
3744 int max_transitive_size = 0; | |
3745 int super_size = 0; | |
3746 // Add superclass transitive interfaces size | |
3747 if (super.not_null()) { | |
3748 super_size = super->transitive_interfaces()->length(); | |
3749 max_transitive_size += super_size; | |
3750 } | |
3751 // Add local interfaces' super interfaces | |
3752 int local_size = local_ifs->length(); | |
3753 for (int i = 0; i < local_size; i++) { | |
3754 klassOop l = klassOop(local_ifs->obj_at(i)); | |
3755 max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length(); | |
3756 } | |
3757 // Finally add local interfaces | |
3758 max_transitive_size += local_size; | |
3759 // Construct array | |
3760 objArrayHandle result; | |
3761 if (max_transitive_size == 0) { | |
3762 // no interfaces, use canonicalized array | |
3763 result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
3764 } else if (max_transitive_size == super_size) { | |
3765 // no new local interfaces added, share superklass' transitive interface array | |
3766 result = objArrayHandle(THREAD, super->transitive_interfaces()); | |
3767 } else if (max_transitive_size == local_size) { | |
3768 // only local interfaces added, share local interface array | |
3769 result = local_ifs; | |
3770 } else { | |
3771 objArrayHandle nullHandle; | |
3772 objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle)); | |
3773 result = objArrayHandle(THREAD, new_objarray); | |
3774 int index = 0; | |
3775 // Copy down from superclass | |
3776 if (super.not_null()) { | |
3777 append_interfaces(result, index, super->transitive_interfaces()); | |
3778 } | |
3779 // Copy down from local interfaces' superinterfaces | |
3780 for (int i = 0; i < local_ifs->length(); i++) { | |
3781 klassOop l = klassOop(local_ifs->obj_at(i)); | |
3782 append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces()); | |
3783 } | |
3784 // Finally add local interfaces | |
3785 append_interfaces(result, index, local_ifs()); | |
3786 | |
3787 // Check if duplicates were removed | |
3788 if (index != max_transitive_size) { | |
3789 assert(index < max_transitive_size, "just checking"); | |
3790 objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle)); | |
3791 for (int i = 0; i < index; i++) { | |
3792 oop e = result->obj_at(i); | |
3793 assert(e != NULL, "just checking"); | |
3794 new_result->obj_at_put(i, e); | |
3795 } | |
3796 result = objArrayHandle(THREAD, new_result); | |
3797 } | |
3798 } | |
3799 return result; | |
3800 } | |
3801 | |
3802 | |
3803 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
3804 klassOop super = this_klass->super(); | |
3805 if ((super != NULL) && | |
3806 (!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) { | |
3807 ResourceMark rm(THREAD); | |
3808 Exceptions::fthrow( | |
3809 THREAD_AND_LOCATION, | |
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3810 vmSymbols::java_lang_IllegalAccessError(), |
0 | 3811 "class %s cannot access its superclass %s", |
3812 this_klass->external_name(), | |
3813 instanceKlass::cast(super)->external_name() | |
3814 ); | |
3815 return; | |
3816 } | |
3817 } | |
3818 | |
3819 | |
3820 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
3821 objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces()); | |
3822 int lng = local_interfaces->length(); | |
3823 for (int i = lng - 1; i >= 0; i--) { | |
3824 klassOop k = klassOop(local_interfaces->obj_at(i)); | |
3825 assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface"); | |
3826 if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) { | |
3827 ResourceMark rm(THREAD); | |
3828 Exceptions::fthrow( | |
3829 THREAD_AND_LOCATION, | |
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3830 vmSymbols::java_lang_IllegalAccessError(), |
0 | 3831 "class %s cannot access its superinterface %s", |
3832 this_klass->external_name(), | |
3833 instanceKlass::cast(k)->external_name() | |
3834 ); | |
3835 return; | |
3836 } | |
3837 } | |
3838 } | |
3839 | |
3840 | |
3841 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
3842 objArrayHandle methods (THREAD, this_klass->methods()); | |
3843 int num_methods = methods->length(); | |
3844 | |
3845 // go thru each method and check if it overrides a final method | |
3846 for (int index = 0; index < num_methods; index++) { | |
3847 methodOop m = (methodOop)methods->obj_at(index); | |
3848 | |
3849 // skip private, static and <init> methods | |
3850 if ((!m->is_private()) && | |
3851 (!m->is_static()) && | |
3852 (m->name() != vmSymbols::object_initializer_name())) { | |
3853 | |
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3854 Symbol* name = m->name(); |
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3855 Symbol* signature = m->signature(); |
0 | 3856 klassOop k = this_klass->super(); |
3857 methodOop super_m = NULL; | |
3858 while (k != NULL) { | |
3859 // skip supers that don't have final methods. | |
3860 if (k->klass_part()->has_final_method()) { | |
3861 // lookup a matching method in the super class hierarchy | |
3862 super_m = instanceKlass::cast(k)->lookup_method(name, signature); | |
3863 if (super_m == NULL) { | |
3864 break; // didn't find any match; get out | |
3865 } | |
3866 | |
3867 if (super_m->is_final() && | |
3868 // matching method in super is final | |
3869 (Reflection::verify_field_access(this_klass->as_klassOop(), | |
3870 super_m->method_holder(), | |
3871 super_m->method_holder(), | |
3872 super_m->access_flags(), false)) | |
3873 // this class can access super final method and therefore override | |
3874 ) { | |
3875 ResourceMark rm(THREAD); | |
3876 Exceptions::fthrow( | |
3877 THREAD_AND_LOCATION, | |
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3878 vmSymbols::java_lang_VerifyError(), |
0 | 3879 "class %s overrides final method %s.%s", |
3880 this_klass->external_name(), | |
3881 name->as_C_string(), | |
3882 signature->as_C_string() | |
3883 ); | |
3884 return; | |
3885 } | |
3886 | |
3887 // continue to look from super_m's holder's super. | |
3888 k = instanceKlass::cast(super_m->method_holder())->super(); | |
3889 continue; | |
3890 } | |
3891 | |
3892 k = k->klass_part()->super(); | |
3893 } | |
3894 } | |
3895 } | |
3896 } | |
3897 | |
3898 | |
3899 // assumes that this_klass is an interface | |
3900 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
3901 assert(this_klass->is_interface(), "not an interface"); | |
3902 objArrayHandle methods (THREAD, this_klass->methods()); | |
3903 int num_methods = methods->length(); | |
3904 | |
3905 for (int index = 0; index < num_methods; index++) { | |
3906 methodOop m = (methodOop)methods->obj_at(index); | |
3907 // if m is static and not the init method, throw a verify error | |
3908 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
3909 ResourceMark rm(THREAD); | |
3910 Exceptions::fthrow( | |
3911 THREAD_AND_LOCATION, | |
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3912 vmSymbols::java_lang_VerifyError(), |
0 | 3913 "Illegal static method %s in interface %s", |
3914 m->name()->as_C_string(), | |
3915 this_klass->external_name() | |
3916 ); | |
3917 return; | |
3918 } | |
3919 } | |
3920 } | |
3921 | |
3922 // utility methods for format checking | |
3923 | |
3924 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
3925 if (!_need_verify) { return; } | |
3926 | |
3927 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
3928 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
3929 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
3930 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
3931 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
3932 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
3933 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
3934 | |
3935 if ((is_abstract && is_final) || | |
3936 (is_interface && !is_abstract) || | |
3937 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
3938 (!is_interface && major_gte_15 && is_annotation)) { | |
3939 ResourceMark rm(THREAD); | |
3940 Exceptions::fthrow( | |
3941 THREAD_AND_LOCATION, | |
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3942 vmSymbols::java_lang_ClassFormatError(), |
0 | 3943 "Illegal class modifiers in class %s: 0x%X", |
3944 _class_name->as_C_string(), flags | |
3945 ); | |
3946 return; | |
3947 } | |
3948 } | |
3949 | |
3950 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
3951 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
3952 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
3953 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
3954 | |
3955 return ((is_public && is_protected) || | |
3956 (is_public && is_private) || | |
3957 (is_protected && is_private)); | |
3958 } | |
3959 | |
3960 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
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3961 u2 max_version = |
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3962 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
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3963 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
0 | 3964 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
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3965 (major <= max_version) && |
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3966 ((major != max_version) || |
0 | 3967 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
3968 } | |
3969 | |
3970 void ClassFileParser::verify_legal_field_modifiers( | |
3971 jint flags, bool is_interface, TRAPS) { | |
3972 if (!_need_verify) { return; } | |
3973 | |
3974 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
3975 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
3976 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
3977 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
3978 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
3979 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
3980 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
3981 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
3982 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
3983 | |
3984 bool is_illegal = false; | |
3985 | |
3986 if (is_interface) { | |
3987 if (!is_public || !is_static || !is_final || is_private || | |
3988 is_protected || is_volatile || is_transient || | |
3989 (major_gte_15 && is_enum)) { | |
3990 is_illegal = true; | |
3991 } | |
3992 } else { // not interface | |
3993 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
3994 is_illegal = true; | |
3995 } | |
3996 } | |
3997 | |
3998 if (is_illegal) { | |
3999 ResourceMark rm(THREAD); | |
4000 Exceptions::fthrow( | |
4001 THREAD_AND_LOCATION, | |
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4002 vmSymbols::java_lang_ClassFormatError(), |
0 | 4003 "Illegal field modifiers in class %s: 0x%X", |
4004 _class_name->as_C_string(), flags); | |
4005 return; | |
4006 } | |
4007 } | |
4008 | |
4009 void ClassFileParser::verify_legal_method_modifiers( | |
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4010 jint flags, bool is_interface, Symbol* name, TRAPS) { |
0 | 4011 if (!_need_verify) { return; } |
4012 | |
4013 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4014 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4015 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4016 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4017 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
4018 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4019 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
4020 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
4021 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
4022 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4023 const bool is_initializer = (name == vmSymbols::object_initializer_name()); | |
4024 | |
4025 bool is_illegal = false; | |
4026 | |
4027 if (is_interface) { | |
4028 if (!is_abstract || !is_public || is_static || is_final || | |
4029 is_native || (major_gte_15 && (is_synchronized || is_strict))) { | |
4030 is_illegal = true; | |
4031 } | |
4032 } else { // not interface | |
4033 if (is_initializer) { | |
4034 if (is_static || is_final || is_synchronized || is_native || | |
4035 is_abstract || (major_gte_15 && is_bridge)) { | |
4036 is_illegal = true; | |
4037 } | |
4038 } else { // not initializer | |
4039 if (is_abstract) { | |
4040 if ((is_final || is_native || is_private || is_static || | |
4041 (major_gte_15 && (is_synchronized || is_strict)))) { | |
4042 is_illegal = true; | |
4043 } | |
4044 } | |
4045 if (has_illegal_visibility(flags)) { | |
4046 is_illegal = true; | |
4047 } | |
4048 } | |
4049 } | |
4050 | |
4051 if (is_illegal) { | |
4052 ResourceMark rm(THREAD); | |
4053 Exceptions::fthrow( | |
4054 THREAD_AND_LOCATION, | |
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4055 vmSymbols::java_lang_ClassFormatError(), |
0 | 4056 "Method %s in class %s has illegal modifiers: 0x%X", |
4057 name->as_C_string(), _class_name->as_C_string(), flags); | |
4058 return; | |
4059 } | |
4060 } | |
4061 | |
4062 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
4063 assert(_need_verify, "only called when _need_verify is true"); | |
4064 int i = 0; | |
4065 int count = length >> 2; | |
4066 for (int k=0; k<count; k++) { | |
4067 unsigned char b0 = buffer[i]; | |
4068 unsigned char b1 = buffer[i+1]; | |
4069 unsigned char b2 = buffer[i+2]; | |
4070 unsigned char b3 = buffer[i+3]; | |
4071 // For an unsigned char v, | |
4072 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
4073 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
4074 unsigned char res = b0 | b0 - 1 | | |
4075 b1 | b1 - 1 | | |
4076 b2 | b2 - 1 | | |
4077 b3 | b3 - 1; | |
4078 if (res >= 128) break; | |
4079 i += 4; | |
4080 } | |
4081 for(; i < length; i++) { | |
4082 unsigned short c; | |
4083 // no embedded zeros | |
4084 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4085 if(buffer[i] < 128) { | |
4086 continue; | |
4087 } | |
4088 if ((i + 5) < length) { // see if it's legal supplementary character | |
4089 if (UTF8::is_supplementary_character(&buffer[i])) { | |
4090 c = UTF8::get_supplementary_character(&buffer[i]); | |
4091 i += 5; | |
4092 continue; | |
4093 } | |
4094 } | |
4095 switch (buffer[i] >> 4) { | |
4096 default: break; | |
4097 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
4098 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4099 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
4100 c = (buffer[i] & 0x1F) << 6; | |
4101 i++; | |
4102 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
4103 c += buffer[i] & 0x3F; | |
4104 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
4105 // for classes with major > 47, c must a null or a character in its shortest form | |
4106 break; | |
4107 } | |
4108 } | |
4109 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4110 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
4111 c = (buffer[i] & 0xF) << 12; | |
4112 i += 2; | |
4113 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
4114 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
4115 if (_major_version <= 47 || c >= 0x800) { | |
4116 // for classes with major > 47, c must be in its shortest form | |
4117 break; | |
4118 } | |
4119 } | |
4120 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4121 } // end of switch | |
4122 } // end of for | |
4123 } | |
4124 | |
4125 // Checks if name is a legal class name. | |
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4126 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
0 | 4127 if (!_need_verify || _relax_verify) { return; } |
4128 | |
4129 char buf[fixed_buffer_size]; | |
4130 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4131 unsigned int length = name->utf8_length(); | |
4132 bool legal = false; | |
4133 | |
4134 if (length > 0) { | |
4135 char* p; | |
4136 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
4137 p = skip_over_field_signature(bytes, false, length, CHECK); | |
4138 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4139 } else if (_major_version < JAVA_1_5_VERSION) { | |
4140 if (bytes[0] != '<') { | |
4141 p = skip_over_field_name(bytes, true, length); | |
4142 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4143 } | |
4144 } else { | |
4145 // 4900761: relax the constraints based on JSR202 spec | |
4146 // Class names may be drawn from the entire Unicode character set. | |
4147 // Identifiers between '/' must be unqualified names. | |
4148 // The utf8 string has been verified when parsing cpool entries. | |
4149 legal = verify_unqualified_name(bytes, length, LegalClass); | |
4150 } | |
4151 } | |
4152 if (!legal) { | |
4153 ResourceMark rm(THREAD); | |
4154 Exceptions::fthrow( | |
4155 THREAD_AND_LOCATION, | |
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4156 vmSymbols::java_lang_ClassFormatError(), |
0 | 4157 "Illegal class name \"%s\" in class file %s", bytes, |
4158 _class_name->as_C_string() | |
4159 ); | |
4160 return; | |
4161 } | |
4162 } | |
4163 | |
4164 // Checks if name is a legal field name. | |
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4165 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
0 | 4166 if (!_need_verify || _relax_verify) { return; } |
4167 | |
4168 char buf[fixed_buffer_size]; | |
4169 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4170 unsigned int length = name->utf8_length(); | |
4171 bool legal = false; | |
4172 | |
4173 if (length > 0) { | |
4174 if (_major_version < JAVA_1_5_VERSION) { | |
4175 if (bytes[0] != '<') { | |
4176 char* p = skip_over_field_name(bytes, false, length); | |
4177 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4178 } | |
4179 } else { | |
4180 // 4881221: relax the constraints based on JSR202 spec | |
4181 legal = verify_unqualified_name(bytes, length, LegalField); | |
4182 } | |
4183 } | |
4184 | |
4185 if (!legal) { | |
4186 ResourceMark rm(THREAD); | |
4187 Exceptions::fthrow( | |
4188 THREAD_AND_LOCATION, | |
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4189 vmSymbols::java_lang_ClassFormatError(), |
0 | 4190 "Illegal field name \"%s\" in class %s", bytes, |
4191 _class_name->as_C_string() | |
4192 ); | |
4193 return; | |
4194 } | |
4195 } | |
4196 | |
4197 // Checks if name is a legal method name. | |
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4198 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
0 | 4199 if (!_need_verify || _relax_verify) { return; } |
4200 | |
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4201 assert(name != NULL, "method name is null"); |
0 | 4202 char buf[fixed_buffer_size]; |
4203 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4204 unsigned int length = name->utf8_length(); | |
4205 bool legal = false; | |
4206 | |
4207 if (length > 0) { | |
4208 if (bytes[0] == '<') { | |
4209 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
4210 legal = true; | |
4211 } | |
4212 } else if (_major_version < JAVA_1_5_VERSION) { | |
4213 char* p; | |
4214 p = skip_over_field_name(bytes, false, length); | |
4215 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4216 } else { | |
4217 // 4881221: relax the constraints based on JSR202 spec | |
4218 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
4219 } | |
4220 } | |
4221 | |
4222 if (!legal) { | |
4223 ResourceMark rm(THREAD); | |
4224 Exceptions::fthrow( | |
4225 THREAD_AND_LOCATION, | |
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4226 vmSymbols::java_lang_ClassFormatError(), |
0 | 4227 "Illegal method name \"%s\" in class %s", bytes, |
4228 _class_name->as_C_string() | |
4229 ); | |
4230 return; | |
4231 } | |
4232 } | |
4233 | |
4234 | |
4235 // Checks if signature is a legal field signature. | |
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4236 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4237 if (!_need_verify) { return; } |
4238 | |
4239 char buf[fixed_buffer_size]; | |
4240 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4241 unsigned int length = signature->utf8_length(); | |
4242 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
4243 | |
4244 if (p == NULL || (p - bytes) != (int)length) { | |
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4245 throwIllegalSignature("Field", name, signature, CHECK); |
0 | 4246 } |
4247 } | |
4248 | |
4249 // Checks if signature is a legal method signature. | |
4250 // Returns number of parameters | |
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4251 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4252 if (!_need_verify) { |
4253 // make sure caller's args_size will be less than 0 even for non-static | |
4254 // method so it will be recomputed in compute_size_of_parameters(). | |
4255 return -2; | |
4256 } | |
4257 | |
4258 unsigned int args_size = 0; | |
4259 char buf[fixed_buffer_size]; | |
4260 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4261 unsigned int length = signature->utf8_length(); | |
4262 char* nextp; | |
4263 | |
4264 // The first character must be a '(' | |
4265 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
4266 length--; | |
4267 // Skip over legal field signatures | |
4268 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4269 while ((length > 0) && (nextp != NULL)) { | |
4270 args_size++; | |
4271 if (p[0] == 'J' || p[0] == 'D') { | |
4272 args_size++; | |
4273 } | |
4274 length -= nextp - p; | |
4275 p = nextp; | |
4276 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4277 } | |
4278 // The first non-signature thing better be a ')' | |
4279 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
4280 length--; | |
4281 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
4282 // All internal methods must return void | |
4283 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
4284 return args_size; | |
4285 } | |
4286 } else { | |
4287 // Now we better just have a return value | |
4288 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
4289 if (nextp && ((int)length == (nextp - p))) { | |
4290 return args_size; | |
4291 } | |
4292 } | |
4293 } | |
4294 } | |
4295 // Report error | |
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4296 throwIllegalSignature("Method", name, signature, CHECK_0); |
0 | 4297 return 0; |
4298 } | |
4299 | |
4300 | |
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4301 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
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4302 // Method names also may not contain the characters '<' or '>', unless <init> |
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4303 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
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4304 // method. Because these names have been checked as special cases before |
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4305 // calling this method in verify_legal_method_name. |
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4306 bool ClassFileParser::verify_unqualified_name( |
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4307 char* name, unsigned int length, int type) { |
0 | 4308 jchar ch; |
4309 | |
4310 for (char* p = name; p != name + length; ) { | |
4311 ch = *p; | |
4312 if (ch < 128) { | |
4313 p++; | |
1881
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4314 if (ch == '.' || ch == ';' || ch == '[' ) { |
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4315 return false; // do not permit '.', ';', or '[' |
0 | 4316 } |
4317 if (type != LegalClass && ch == '/') { | |
4318 return false; // do not permit '/' unless it's class name | |
4319 } | |
4320 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
4321 return false; // do not permit '<' or '>' in method names | |
4322 } | |
4323 } else { | |
4324 char* tmp_p = UTF8::next(p, &ch); | |
4325 p = tmp_p; | |
4326 } | |
4327 } | |
4328 return true; | |
4329 } | |
4330 | |
4331 | |
4332 // Take pointer to a string. Skip over the longest part of the string that could | |
4333 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
4334 // Return a pointer to just past the fieldname. | |
4335 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
4336 // being true, we saw consecutive slashes (meaning we were looking for a | |
4337 // qualified path but found something that was badly-formed). | |
4338 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
4339 char* p; | |
4340 jchar ch; | |
4341 jboolean last_is_slash = false; | |
4342 jboolean not_first_ch = false; | |
4343 | |
4344 for (p = name; p != name + length; not_first_ch = true) { | |
4345 char* old_p = p; | |
4346 ch = *p; | |
4347 if (ch < 128) { | |
4348 p++; | |
4349 // quick check for ascii | |
4350 if ((ch >= 'a' && ch <= 'z') || | |
4351 (ch >= 'A' && ch <= 'Z') || | |
4352 (ch == '_' || ch == '$') || | |
4353 (not_first_ch && ch >= '0' && ch <= '9')) { | |
4354 last_is_slash = false; | |
4355 continue; | |
4356 } | |
4357 if (slash_ok && ch == '/') { | |
4358 if (last_is_slash) { | |
4359 return NULL; // Don't permit consecutive slashes | |
4360 } | |
4361 last_is_slash = true; | |
4362 continue; | |
4363 } | |
4364 } else { | |
4365 jint unicode_ch; | |
4366 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
4367 p = tmp_p; | |
4368 last_is_slash = false; | |
4369 // Check if ch is Java identifier start or is Java identifier part | |
4370 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
4371 EXCEPTION_MARK; | |
1142 | 4372 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
0 | 4373 |
4374 // return value | |
4375 JavaValue result(T_BOOLEAN); | |
4376 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
4377 JavaCallArguments args; | |
4378 args.push_int(unicode_ch); | |
4379 | |
4380 // public static boolean isJavaIdentifierStart(char ch); | |
4381 JavaCalls::call_static(&result, | |
4382 klass, | |
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4383 vmSymbols::isJavaIdentifierStart_name(), |
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4384 vmSymbols::int_bool_signature(), |
0 | 4385 &args, |
4386 THREAD); | |
4387 | |
4388 if (HAS_PENDING_EXCEPTION) { | |
4389 CLEAR_PENDING_EXCEPTION; | |
4390 return 0; | |
4391 } | |
4392 if (result.get_jboolean()) { | |
4393 continue; | |
4394 } | |
4395 | |
4396 if (not_first_ch) { | |
4397 // public static boolean isJavaIdentifierPart(char ch); | |
4398 JavaCalls::call_static(&result, | |
4399 klass, | |
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4400 vmSymbols::isJavaIdentifierPart_name(), |
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4401 vmSymbols::int_bool_signature(), |
0 | 4402 &args, |
4403 THREAD); | |
4404 | |
4405 if (HAS_PENDING_EXCEPTION) { | |
4406 CLEAR_PENDING_EXCEPTION; | |
4407 return 0; | |
4408 } | |
4409 | |
4410 if (result.get_jboolean()) { | |
4411 continue; | |
4412 } | |
4413 } | |
4414 } | |
4415 return (not_first_ch) ? old_p : NULL; | |
4416 } | |
4417 return (not_first_ch) ? p : NULL; | |
4418 } | |
4419 | |
4420 | |
4421 // Take pointer to a string. Skip over the longest part of the string that could | |
4422 // be taken as a field signature. Allow "void" if void_ok. | |
4423 // Return a pointer to just past the signature. | |
4424 // Return NULL if no legal signature is found. | |
4425 char* ClassFileParser::skip_over_field_signature(char* signature, | |
4426 bool void_ok, | |
4427 unsigned int length, | |
4428 TRAPS) { | |
4429 unsigned int array_dim = 0; | |
4430 while (length > 0) { | |
4431 switch (signature[0]) { | |
4432 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
4433 case JVM_SIGNATURE_BOOLEAN: | |
4434 case JVM_SIGNATURE_BYTE: | |
4435 case JVM_SIGNATURE_CHAR: | |
4436 case JVM_SIGNATURE_SHORT: | |
4437 case JVM_SIGNATURE_INT: | |
4438 case JVM_SIGNATURE_FLOAT: | |
4439 case JVM_SIGNATURE_LONG: | |
4440 case JVM_SIGNATURE_DOUBLE: | |
4441 return signature + 1; | |
4442 case JVM_SIGNATURE_CLASS: { | |
4443 if (_major_version < JAVA_1_5_VERSION) { | |
4444 // Skip over the class name if one is there | |
4445 char* p = skip_over_field_name(signature + 1, true, --length); | |
4446 | |
4447 // The next character better be a semicolon | |
4448 if (p && (p - signature) > 1 && p[0] == ';') { | |
4449 return p + 1; | |
4450 } | |
4451 } else { | |
4452 // 4900761: For class version > 48, any unicode is allowed in class name. | |
4453 length--; | |
4454 signature++; | |
4455 while (length > 0 && signature[0] != ';') { | |
4456 if (signature[0] == '.') { | |
4457 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
4458 } | |
4459 length--; | |
4460 signature++; | |
4461 } | |
4462 if (signature[0] == ';') { return signature + 1; } | |
4463 } | |
4464 | |
4465 return NULL; | |
4466 } | |
4467 case JVM_SIGNATURE_ARRAY: | |
4468 array_dim++; | |
4469 if (array_dim > 255) { | |
4470 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
4471 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
4472 } | |
4473 // The rest of what's there better be a legal signature | |
4474 signature++; | |
4475 length--; | |
4476 void_ok = false; | |
4477 break; | |
4478 | |
4479 default: | |
4480 return NULL; | |
4481 } | |
4482 } | |
4483 return NULL; | |
4484 } |