Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/classFileParser.cpp @ 7457:35431a769282
8004823: Add VM support for type annotation reflection
Reviewed-by: dholmes, coleenp
Contributed-by: joel.franck@oracle.com
author | stefank |
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date | Thu, 20 Dec 2012 10:22:19 +0100 |
parents | 5fafdef522c6 |
children | ade95d680b42 |
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" | |
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28 #include "classfile/classLoaderData.hpp" |
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29 #include "classfile/classLoaderData.inline.hpp" |
6934 | 30 #include "classfile/defaultMethods.hpp" |
31 #include "classfile/genericSignatures.hpp" | |
1972 | 32 #include "classfile/javaClasses.hpp" |
33 #include "classfile/symbolTable.hpp" | |
34 #include "classfile/systemDictionary.hpp" | |
35 #include "classfile/verificationType.hpp" | |
36 #include "classfile/verifier.hpp" | |
37 #include "classfile/vmSymbols.hpp" | |
38 #include "memory/allocation.hpp" | |
39 #include "memory/gcLocker.hpp" | |
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40 #include "memory/metadataFactory.hpp" |
1972 | 41 #include "memory/oopFactory.hpp" |
42 #include "memory/universe.inline.hpp" | |
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43 #include "oops/constantPool.hpp" |
3938 | 44 #include "oops/fieldStreams.hpp" |
1972 | 45 #include "oops/instanceKlass.hpp" |
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46 #include "oops/instanceMirrorKlass.hpp" |
1972 | 47 #include "oops/klass.inline.hpp" |
48 #include "oops/klassVtable.hpp" | |
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49 #include "oops/method.hpp" |
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50 #include "oops/symbol.hpp" |
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51 #include "prims/jvm.h" |
1972 | 52 #include "prims/jvmtiExport.hpp" |
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53 #include "prims/jvmtiThreadState.hpp" |
1972 | 54 #include "runtime/javaCalls.hpp" |
55 #include "runtime/perfData.hpp" | |
56 #include "runtime/reflection.hpp" | |
57 #include "runtime/signature.hpp" | |
58 #include "runtime/timer.hpp" | |
59 #include "services/classLoadingService.hpp" | |
60 #include "services/threadService.hpp" | |
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61 #include "utilities/array.hpp" |
0 | 62 |
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63 // We generally try to create the oops directly when parsing, rather than |
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64 // allocating temporary data structures and copying the bytes twice. A |
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65 // temporary area is only needed when parsing utf8 entries in the constant |
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66 // pool and when parsing line number tables. |
0 | 67 |
68 // We add assert in debug mode when class format is not checked. | |
69 | |
70 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
71 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
6868 | 72 #define JAVA_MAX_SUPPORTED_VERSION 52 |
0 | 73 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
74 | |
75 // Used for two backward compatibility reasons: | |
76 // - to check for new additions to the class file format in JDK1.5 | |
77 // - to check for bug fixes in the format checker in JDK1.5 | |
78 #define JAVA_1_5_VERSION 49 | |
79 | |
80 // Used for backward compatibility reasons: | |
81 // - to check for javac bug fixes that happened after 1.5 | |
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82 // - also used as the max version when running in jdk6 |
0 | 83 #define JAVA_6_VERSION 50 |
84 | |
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85 // Used for backward compatibility reasons: |
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86 // - to check NameAndType_info signatures more aggressively |
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87 #define JAVA_7_VERSION 51 |
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88 |
6934 | 89 // Extension method support. |
90 #define JAVA_8_VERSION 52 | |
91 | |
0 | 92 |
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93 void ClassFileParser::parse_constant_pool_entries(ClassLoaderData* loader_data, constantPoolHandle cp, int length, TRAPS) { |
0 | 94 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
95 // this function (_current can be allocated in a register, with scalar | |
96 // replacement of aggregates). The _current pointer is copied back to | |
97 // stream() when this function returns. DON'T call another method within | |
98 // this method that uses stream(). | |
99 ClassFileStream* cfs0 = stream(); | |
100 ClassFileStream cfs1 = *cfs0; | |
101 ClassFileStream* cfs = &cfs1; | |
102 #ifdef ASSERT | |
1685 | 103 assert(cfs->allocated_on_stack(),"should be local"); |
0 | 104 u1* old_current = cfs0->current(); |
105 #endif | |
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106 Handle class_loader(THREAD, loader_data->class_loader()); |
0 | 107 |
108 // Used for batching symbol allocations. | |
109 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
110 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
111 int indices[SymbolTable::symbol_alloc_batch_size]; | |
112 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
113 int names_count = 0; | |
114 | |
115 // parsing Index 0 is unused | |
116 for (int index = 1; index < length; index++) { | |
117 // Each of the following case guarantees one more byte in the stream | |
118 // for the following tag or the access_flags following constant pool, | |
119 // so we don't need bounds-check for reading tag. | |
120 u1 tag = cfs->get_u1_fast(); | |
121 switch (tag) { | |
122 case JVM_CONSTANT_Class : | |
123 { | |
124 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
125 u2 name_index = cfs->get_u2_fast(); | |
126 cp->klass_index_at_put(index, name_index); | |
127 } | |
128 break; | |
129 case JVM_CONSTANT_Fieldref : | |
130 { | |
131 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
132 u2 class_index = cfs->get_u2_fast(); | |
133 u2 name_and_type_index = cfs->get_u2_fast(); | |
134 cp->field_at_put(index, class_index, name_and_type_index); | |
135 } | |
136 break; | |
137 case JVM_CONSTANT_Methodref : | |
138 { | |
139 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
140 u2 class_index = cfs->get_u2_fast(); | |
141 u2 name_and_type_index = cfs->get_u2_fast(); | |
142 cp->method_at_put(index, class_index, name_and_type_index); | |
143 } | |
144 break; | |
145 case JVM_CONSTANT_InterfaceMethodref : | |
146 { | |
147 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
148 u2 class_index = cfs->get_u2_fast(); | |
149 u2 name_and_type_index = cfs->get_u2_fast(); | |
150 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
151 } | |
152 break; | |
153 case JVM_CONSTANT_String : | |
154 { | |
155 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
156 u2 string_index = cfs->get_u2_fast(); | |
157 cp->string_index_at_put(index, string_index); | |
158 } | |
159 break; | |
1602 | 160 case JVM_CONSTANT_MethodHandle : |
161 case JVM_CONSTANT_MethodType : | |
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162 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
1602 | 163 classfile_parse_error( |
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164 "Class file version does not support constant tag %u in class file %s", |
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165 tag, CHECK); |
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166 } |
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167 if (!EnableInvokeDynamic) { |
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168 classfile_parse_error( |
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169 "This JVM does not support constant tag %u in class file %s", |
1602 | 170 tag, CHECK); |
171 } | |
172 if (tag == JVM_CONSTANT_MethodHandle) { | |
173 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
174 u1 ref_kind = cfs->get_u1_fast(); | |
175 u2 method_index = cfs->get_u2_fast(); | |
176 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
177 } else if (tag == JVM_CONSTANT_MethodType) { | |
178 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
179 u2 signature_index = cfs->get_u2_fast(); | |
180 cp->method_type_index_at_put(index, signature_index); | |
181 } else { | |
182 ShouldNotReachHere(); | |
183 } | |
184 break; | |
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185 case JVM_CONSTANT_InvokeDynamic : |
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186 { |
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187 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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188 classfile_parse_error( |
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189 "Class file version does not support constant tag %u in class file %s", |
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190 tag, CHECK); |
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191 } |
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192 if (!EnableInvokeDynamic) { |
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193 classfile_parse_error( |
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194 "This JVM does not support constant tag %u in class file %s", |
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195 tag, CHECK); |
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196 } |
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197 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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198 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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199 u2 name_and_type_index = cfs->get_u2_fast(); |
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200 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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201 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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202 cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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203 } |
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204 break; |
0 | 205 case JVM_CONSTANT_Integer : |
206 { | |
207 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
208 u4 bytes = cfs->get_u4_fast(); | |
209 cp->int_at_put(index, (jint) bytes); | |
210 } | |
211 break; | |
212 case JVM_CONSTANT_Float : | |
213 { | |
214 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
215 u4 bytes = cfs->get_u4_fast(); | |
216 cp->float_at_put(index, *(jfloat*)&bytes); | |
217 } | |
218 break; | |
219 case JVM_CONSTANT_Long : | |
220 // A mangled type might cause you to overrun allocated memory | |
221 guarantee_property(index+1 < length, | |
222 "Invalid constant pool entry %u in class file %s", | |
223 index, CHECK); | |
224 { | |
225 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
226 u8 bytes = cfs->get_u8_fast(); | |
227 cp->long_at_put(index, bytes); | |
228 } | |
229 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
230 break; | |
231 case JVM_CONSTANT_Double : | |
232 // A mangled type might cause you to overrun allocated memory | |
233 guarantee_property(index+1 < length, | |
234 "Invalid constant pool entry %u in class file %s", | |
235 index, CHECK); | |
236 { | |
237 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
238 u8 bytes = cfs->get_u8_fast(); | |
239 cp->double_at_put(index, *(jdouble*)&bytes); | |
240 } | |
241 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
242 break; | |
243 case JVM_CONSTANT_NameAndType : | |
244 { | |
245 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
246 u2 name_index = cfs->get_u2_fast(); | |
247 u2 signature_index = cfs->get_u2_fast(); | |
248 cp->name_and_type_at_put(index, name_index, signature_index); | |
249 } | |
250 break; | |
251 case JVM_CONSTANT_Utf8 : | |
252 { | |
253 cfs->guarantee_more(2, CHECK); // utf8_length | |
254 u2 utf8_length = cfs->get_u2_fast(); | |
255 u1* utf8_buffer = cfs->get_u1_buffer(); | |
256 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
257 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
258 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
259 cfs->skip_u1_fast(utf8_length); | |
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260 |
0 | 261 // Before storing the symbol, make sure it's legal |
262 if (_need_verify) { | |
263 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
264 } | |
265 | |
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266 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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267 Handle patch = clear_cp_patch_at(index); |
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268 guarantee_property(java_lang_String::is_instance(patch()), |
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269 "Illegal utf8 patch at %d in class file %s", |
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270 index, CHECK); |
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271 char* str = java_lang_String::as_utf8_string(patch()); |
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272 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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273 utf8_buffer = (u1*) str; |
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274 utf8_length = (int) strlen(str); |
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275 } |
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276 |
0 | 277 unsigned int hash; |
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278 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
0 | 279 if (result == NULL) { |
280 names[names_count] = (char*)utf8_buffer; | |
281 lengths[names_count] = utf8_length; | |
282 indices[names_count] = index; | |
283 hashValues[names_count++] = hash; | |
284 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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285 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 286 names_count = 0; |
287 } | |
288 } else { | |
289 cp->symbol_at_put(index, result); | |
290 } | |
291 } | |
292 break; | |
293 default: | |
294 classfile_parse_error( | |
295 "Unknown constant tag %u in class file %s", tag, CHECK); | |
296 break; | |
297 } | |
298 } | |
299 | |
300 // Allocate the remaining symbols | |
301 if (names_count > 0) { | |
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302 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 303 } |
304 | |
305 // Copy _current pointer of local copy back to stream(). | |
306 #ifdef ASSERT | |
307 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
308 #endif | |
309 cfs0->set_current(cfs1.current()); | |
310 } | |
311 | |
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312 // This class unreferences constant pool symbols if an error has occurred |
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313 // while parsing the class before it is assigned into the class. |
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314 // If it gets an error after that it is unloaded and the constant pool will |
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315 // be cleaned up then. |
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316 class ConstantPoolCleaner : public StackObj { |
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317 constantPoolHandle _cphandle; |
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318 bool _in_error; |
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319 public: |
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320 ConstantPoolCleaner(constantPoolHandle cp) : _cphandle(cp), _in_error(true) {} |
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321 ~ConstantPoolCleaner() { |
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322 if (_in_error && _cphandle.not_null()) { |
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323 _cphandle->unreference_symbols(); |
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324 } |
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325 } |
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326 void set_in_error(bool clean) { _in_error = clean; } |
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327 }; |
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328 |
0 | 329 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
330 | |
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331 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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332 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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333 return cp->symbol_at(index); |
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334 else |
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335 return NULL; |
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336 } |
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337 |
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338 constantPoolHandle ClassFileParser::parse_constant_pool(ClassLoaderData* loader_data, TRAPS) { |
0 | 339 ClassFileStream* cfs = stream(); |
340 constantPoolHandle nullHandle; | |
341 | |
342 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
343 u2 length = cfs->get_u2_fast(); | |
344 guarantee_property( | |
345 length >= 1, "Illegal constant pool size %u in class file %s", | |
346 length, CHECK_(nullHandle)); | |
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347 ConstantPool* constant_pool = |
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348 ConstantPool::allocate(loader_data, |
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349 length, |
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350 CHECK_(nullHandle)); |
0 | 351 constantPoolHandle cp (THREAD, constant_pool); |
352 | |
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353 ConstantPoolCleaner cp_in_error(cp); // set constant pool to be cleaned up. |
0 | 354 |
355 // parsing constant pool entries | |
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356 parse_constant_pool_entries(loader_data, cp, length, CHECK_(nullHandle)); |
0 | 357 |
358 int index = 1; // declared outside of loops for portability | |
359 | |
360 // first verification pass - validate cross references and fixup class and string constants | |
361 for (index = 1; index < length; index++) { // Index 0 is unused | |
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362 jbyte tag = cp->tag_at(index).value(); |
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363 switch (tag) { |
0 | 364 case JVM_CONSTANT_Class : |
365 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
366 break; | |
367 case JVM_CONSTANT_Fieldref : | |
368 // fall through | |
369 case JVM_CONSTANT_Methodref : | |
370 // fall through | |
371 case JVM_CONSTANT_InterfaceMethodref : { | |
372 if (!_need_verify) break; | |
373 int klass_ref_index = cp->klass_ref_index_at(index); | |
374 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
375 check_property(valid_cp_range(klass_ref_index, length) && | |
431
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376 is_klass_reference(cp, klass_ref_index), |
0 | 377 "Invalid constant pool index %u in class file %s", |
378 klass_ref_index, | |
379 CHECK_(nullHandle)); | |
380 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
381 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
382 "Invalid constant pool index %u in class file %s", | |
383 name_and_type_ref_index, | |
384 CHECK_(nullHandle)); | |
385 break; | |
386 } | |
387 case JVM_CONSTANT_String : | |
388 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
389 break; | |
390 case JVM_CONSTANT_Integer : | |
391 break; | |
392 case JVM_CONSTANT_Float : | |
393 break; | |
394 case JVM_CONSTANT_Long : | |
395 case JVM_CONSTANT_Double : | |
396 index++; | |
397 check_property( | |
398 (index < length && cp->tag_at(index).is_invalid()), | |
399 "Improper constant pool long/double index %u in class file %s", | |
400 index, CHECK_(nullHandle)); | |
401 break; | |
402 case JVM_CONSTANT_NameAndType : { | |
403 if (!_need_verify) break; | |
404 int name_ref_index = cp->name_ref_index_at(index); | |
405 int signature_ref_index = cp->signature_ref_index_at(index); | |
406 check_property( | |
407 valid_cp_range(name_ref_index, length) && | |
408 cp->tag_at(name_ref_index).is_utf8(), | |
409 "Invalid constant pool index %u in class file %s", | |
410 name_ref_index, CHECK_(nullHandle)); | |
411 check_property( | |
412 valid_cp_range(signature_ref_index, length) && | |
413 cp->tag_at(signature_ref_index).is_utf8(), | |
414 "Invalid constant pool index %u in class file %s", | |
415 signature_ref_index, CHECK_(nullHandle)); | |
416 break; | |
417 } | |
418 case JVM_CONSTANT_Utf8 : | |
419 break; | |
420 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
421 case JVM_CONSTANT_UnresolvedClassInError: | |
422 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
423 break; | |
424 case JVM_CONSTANT_ClassIndex : | |
425 { | |
426 int class_index = cp->klass_index_at(index); | |
427 check_property( | |
428 valid_cp_range(class_index, length) && | |
429 cp->tag_at(class_index).is_utf8(), | |
430 "Invalid constant pool index %u in class file %s", | |
431 class_index, CHECK_(nullHandle)); | |
432 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
433 } | |
434 break; | |
435 case JVM_CONSTANT_StringIndex : | |
436 { | |
437 int string_index = cp->string_index_at(index); | |
438 check_property( | |
439 valid_cp_range(string_index, length) && | |
440 cp->tag_at(string_index).is_utf8(), | |
441 "Invalid constant pool index %u in class file %s", | |
442 string_index, CHECK_(nullHandle)); | |
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443 Symbol* sym = cp->symbol_at(string_index); |
0 | 444 cp->unresolved_string_at_put(index, sym); |
445 } | |
446 break; | |
1602 | 447 case JVM_CONSTANT_MethodHandle : |
448 { | |
449 int ref_index = cp->method_handle_index_at(index); | |
450 check_property( | |
451 valid_cp_range(ref_index, length) && | |
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452 EnableInvokeDynamic, |
1602 | 453 "Invalid constant pool index %u in class file %s", |
454 ref_index, CHECK_(nullHandle)); | |
455 constantTag tag = cp->tag_at(ref_index); | |
456 int ref_kind = cp->method_handle_ref_kind_at(index); | |
457 switch (ref_kind) { | |
458 case JVM_REF_getField: | |
459 case JVM_REF_getStatic: | |
460 case JVM_REF_putField: | |
461 case JVM_REF_putStatic: | |
462 check_property( | |
463 tag.is_field(), | |
464 "Invalid constant pool index %u in class file %s (not a field)", | |
465 ref_index, CHECK_(nullHandle)); | |
466 break; | |
467 case JVM_REF_invokeVirtual: | |
468 case JVM_REF_invokeStatic: | |
469 case JVM_REF_invokeSpecial: | |
470 case JVM_REF_newInvokeSpecial: | |
471 check_property( | |
472 tag.is_method(), | |
473 "Invalid constant pool index %u in class file %s (not a method)", | |
474 ref_index, CHECK_(nullHandle)); | |
475 break; | |
476 case JVM_REF_invokeInterface: | |
477 check_property( | |
478 tag.is_interface_method(), | |
479 "Invalid constant pool index %u in class file %s (not an interface method)", | |
480 ref_index, CHECK_(nullHandle)); | |
481 break; | |
482 default: | |
483 classfile_parse_error( | |
484 "Bad method handle kind at constant pool index %u in class file %s", | |
485 index, CHECK_(nullHandle)); | |
486 } | |
487 // Keep the ref_index unchanged. It will be indirected at link-time. | |
488 } | |
489 break; | |
490 case JVM_CONSTANT_MethodType : | |
491 { | |
492 int ref_index = cp->method_type_index_at(index); | |
493 check_property( | |
494 valid_cp_range(ref_index, length) && | |
495 cp->tag_at(ref_index).is_utf8() && | |
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496 EnableInvokeDynamic, |
1602 | 497 "Invalid constant pool index %u in class file %s", |
498 ref_index, CHECK_(nullHandle)); | |
499 } | |
500 break; | |
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501 case JVM_CONSTANT_InvokeDynamic : |
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502 { |
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503 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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504 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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505 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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506 "Invalid constant pool index %u in class file %s", |
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507 name_and_type_ref_index, |
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508 CHECK_(nullHandle)); |
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509 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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510 break; |
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511 } |
0 | 512 default: |
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513 fatal(err_msg("bad constant pool tag value %u", |
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514 cp->tag_at(index).value())); |
0 | 515 ShouldNotReachHere(); |
516 break; | |
517 } // end of switch | |
518 } // end of for | |
519 | |
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520 if (_cp_patches != NULL) { |
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521 // need to treat this_class specially... |
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522 assert(EnableInvokeDynamic, ""); |
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523 int this_class_index; |
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524 { |
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525 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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526 u1* mark = cfs->current(); |
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527 u2 flags = cfs->get_u2_fast(); |
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528 this_class_index = cfs->get_u2_fast(); |
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529 cfs->set_current(mark); // revert to mark |
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530 } |
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531 |
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532 for (index = 1; index < length; index++) { // Index 0 is unused |
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533 if (has_cp_patch_at(index)) { |
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534 guarantee_property(index != this_class_index, |
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535 "Illegal constant pool patch to self at %d in class file %s", |
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536 index, CHECK_(nullHandle)); |
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537 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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538 } |
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539 } |
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540 } |
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541 |
0 | 542 if (!_need_verify) { |
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543 cp_in_error.set_in_error(false); |
0 | 544 return cp; |
545 } | |
546 | |
547 // second verification pass - checks the strings are of the right format. | |
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548 // but not yet to the other entries |
0 | 549 for (index = 1; index < length; index++) { |
550 jbyte tag = cp->tag_at(index).value(); | |
551 switch (tag) { | |
552 case JVM_CONSTANT_UnresolvedClass: { | |
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553 Symbol* class_name = cp->unresolved_klass_at(index); |
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554 // check the name, even if _cp_patches will overwrite it |
0 | 555 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
556 break; | |
557 } | |
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558 case JVM_CONSTANT_NameAndType: { |
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559 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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560 int sig_index = cp->signature_ref_index_at(index); |
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561 int name_index = cp->name_ref_index_at(index); |
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562 Symbol* name = cp->symbol_at(name_index); |
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563 Symbol* sig = cp->symbol_at(sig_index); |
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564 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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565 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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566 } else { |
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567 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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568 } |
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569 } |
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570 break; |
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571 } |
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572 case JVM_CONSTANT_InvokeDynamic: |
0 | 573 case JVM_CONSTANT_Fieldref: |
574 case JVM_CONSTANT_Methodref: | |
575 case JVM_CONSTANT_InterfaceMethodref: { | |
576 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
577 // already verified to be utf8 | |
578 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
579 // already verified to be utf8 | |
580 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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581 Symbol* name = cp->symbol_at(name_ref_index); |
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582 Symbol* signature = cp->symbol_at(signature_ref_index); |
0 | 583 if (tag == JVM_CONSTANT_Fieldref) { |
584 verify_legal_field_name(name, CHECK_(nullHandle)); | |
1586
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585 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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586 // Signature is verified above, when iterating NameAndType_info. |
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587 // Need only to be sure it's the right type. |
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588 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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589 throwIllegalSignature( |
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590 "Field", name, signature, CHECK_(nullHandle)); |
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591 } |
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592 } else { |
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593 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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594 } |
0 | 595 } else { |
596 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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597 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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598 // Signature is verified above, when iterating NameAndType_info. |
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599 // Need only to be sure it's the right type. |
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600 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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601 throwIllegalSignature( |
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602 "Method", name, signature, CHECK_(nullHandle)); |
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603 } |
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604 } else { |
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605 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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606 } |
0 | 607 if (tag == JVM_CONSTANT_Methodref) { |
608 // 4509014: If a class method name begins with '<', it must be "<init>". | |
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609 assert(name != NULL, "method name in constant pool is null"); |
0 | 610 unsigned int name_len = name->utf8_length(); |
611 assert(name_len > 0, "bad method name"); // already verified as legal name | |
612 if (name->byte_at(0) == '<') { | |
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613 if (name != vmSymbols::object_initializer_name()) { |
0 | 614 classfile_parse_error( |
615 "Bad method name at constant pool index %u in class file %s", | |
616 name_ref_index, CHECK_(nullHandle)); | |
617 } | |
618 } | |
619 } | |
620 } | |
621 break; | |
622 } | |
1602 | 623 case JVM_CONSTANT_MethodHandle: { |
624 int ref_index = cp->method_handle_index_at(index); | |
625 int ref_kind = cp->method_handle_ref_kind_at(index); | |
626 switch (ref_kind) { | |
627 case JVM_REF_invokeVirtual: | |
628 case JVM_REF_invokeStatic: | |
629 case JVM_REF_invokeSpecial: | |
630 case JVM_REF_newInvokeSpecial: | |
631 { | |
632 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
633 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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634 Symbol* name = cp->symbol_at(name_ref_index); |
1602 | 635 if (ref_kind == JVM_REF_newInvokeSpecial) { |
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636 if (name != vmSymbols::object_initializer_name()) { |
1602 | 637 classfile_parse_error( |
638 "Bad constructor name at constant pool index %u in class file %s", | |
639 name_ref_index, CHECK_(nullHandle)); | |
640 } | |
641 } else { | |
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642 if (name == vmSymbols::object_initializer_name()) { |
1602 | 643 classfile_parse_error( |
644 "Bad method name at constant pool index %u in class file %s", | |
645 name_ref_index, CHECK_(nullHandle)); | |
646 } | |
647 } | |
648 } | |
649 break; | |
650 // Other ref_kinds are already fully checked in previous pass. | |
651 } | |
652 break; | |
653 } | |
654 case JVM_CONSTANT_MethodType: { | |
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655 Symbol* no_name = vmSymbols::type_name(); // place holder |
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656 Symbol* signature = cp->method_type_signature_at(index); |
1602 | 657 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
658 break; | |
659 } | |
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660 case JVM_CONSTANT_Utf8: { |
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661 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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662 } |
0 | 663 } // end of switch |
664 } // end of for | |
665 | |
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666 cp_in_error.set_in_error(false); |
0 | 667 return cp; |
668 } | |
669 | |
670 | |
431
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671 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
2416
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672 assert(EnableInvokeDynamic, ""); |
431
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673 BasicType patch_type = T_VOID; |
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674 |
431
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675 switch (cp->tag_at(index).value()) { |
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676 |
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677 case JVM_CONSTANT_UnresolvedClass : |
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678 // Patching a class means pre-resolving it. |
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679 // The name in the constant pool is ignored. |
1602 | 680 if (java_lang_Class::is_instance(patch())) { |
431
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681 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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682 "Illegal class patch at %d in class file %s", |
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683 index, CHECK); |
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684 cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
431
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685 } else { |
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686 guarantee_property(java_lang_String::is_instance(patch()), |
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687 "Illegal class patch at %d in class file %s", |
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688 index, CHECK); |
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689 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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690 cp->unresolved_klass_at_put(index, name); |
431
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691 } |
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692 break; |
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693 |
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694 case JVM_CONSTANT_String : |
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695 // skip this patch and don't clear it. Needs the oop array for resolved |
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696 // references to be created first. |
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697 return; |
431
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698 |
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699 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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700 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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701 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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702 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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703 patch_prim: |
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704 { |
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705 jvalue value; |
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706 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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707 guarantee_property(value_type == patch_type, |
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708 "Illegal primitive patch at %d in class file %s", |
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709 index, CHECK); |
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710 switch (value_type) { |
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711 case T_INT: cp->int_at_put(index, value.i); break; |
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712 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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713 case T_LONG: cp->long_at_put(index, value.j); break; |
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714 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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715 default: assert(false, ""); |
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716 } |
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717 } |
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718 break; |
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719 |
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720 default: |
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721 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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722 guarantee_property(!has_cp_patch_at(index), |
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723 "Illegal unexpected patch at %d in class file %s", |
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724 index, CHECK); |
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725 return; |
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726 } |
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727 |
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728 // On fall-through, mark the patch as used. |
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729 clear_cp_patch_at(index); |
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730 } |
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731 |
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732 |
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733 |
0 | 734 class NameSigHash: public ResourceObj { |
735 public: | |
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736 Symbol* _name; // name |
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737 Symbol* _sig; // signature |
0 | 738 NameSigHash* _next; // Next entry in hash table |
739 }; | |
740 | |
741 | |
742 #define HASH_ROW_SIZE 256 | |
743 | |
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744 unsigned int hash(Symbol* name, Symbol* sig) { |
0 | 745 unsigned int raw_hash = 0; |
746 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
747 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
748 | |
749 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
750 } | |
751 | |
752 | |
753 void initialize_hashtable(NameSigHash** table) { | |
754 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
755 } | |
756 | |
757 // Return false if the name/sig combination is found in table. | |
758 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
759 // The old format checker uses heap sort to find duplicates. | |
760 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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761 // of table since we don't expect Symbol*'s to move. |
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762 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
0 | 763 assert(name != NULL, "name in constant pool is NULL"); |
764 | |
765 // First lookup for duplicates | |
766 int index = hash(name, sig); | |
767 NameSigHash* entry = table[index]; | |
768 while (entry != NULL) { | |
769 if (entry->_name == name && entry->_sig == sig) { | |
770 return false; | |
771 } | |
772 entry = entry->_next; | |
773 } | |
774 | |
775 // No duplicate is found, allocate a new entry and fill it. | |
776 entry = new NameSigHash(); | |
777 entry->_name = name; | |
778 entry->_sig = sig; | |
779 | |
780 // Insert into hash table | |
781 entry->_next = table[index]; | |
782 table[index] = entry; | |
783 | |
784 return true; | |
785 } | |
786 | |
787 | |
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788 Array<Klass*>* ClassFileParser::parse_interfaces(constantPoolHandle cp, |
0 | 789 int length, |
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790 ClassLoaderData* loader_data, |
0 | 791 Handle protection_domain, |
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792 Symbol* class_name, |
6934 | 793 bool* has_default_methods, |
0 | 794 TRAPS) { |
795 ClassFileStream* cfs = stream(); | |
796 assert(length > 0, "only called for length>0"); | |
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797 // FIXME: Leak at later OOM. |
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798 Array<Klass*>* interfaces = MetadataFactory::new_array<Klass*>(loader_data, length, NULL, CHECK_NULL); |
0 | 799 |
800 int index; | |
801 for (index = 0; index < length; index++) { | |
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802 u2 interface_index = cfs->get_u2(CHECK_NULL); |
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803 KlassHandle interf; |
0 | 804 check_property( |
805 valid_cp_range(interface_index, cp->length()) && | |
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806 is_klass_reference(cp, interface_index), |
0 | 807 "Interface name has bad constant pool index %u in class file %s", |
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808 interface_index, CHECK_NULL); |
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809 if (cp->tag_at(interface_index).is_klass()) { |
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810 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
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811 } else { |
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812 Symbol* unresolved_klass = cp->klass_name_at(interface_index); |
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813 |
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814 // Don't need to check legal name because it's checked when parsing constant pool. |
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815 // But need to make sure it's not an array type. |
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816 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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817 "Bad interface name in class file %s", CHECK_NULL); |
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818 Handle class_loader(THREAD, loader_data->class_loader()); |
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819 |
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820 // Call resolve_super so classcircularity is checked |
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821 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
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822 unresolved_klass, class_loader, protection_domain, |
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823 false, CHECK_NULL); |
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824 interf = KlassHandle(THREAD, k); |
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825 } |
0 | 826 |
6983 | 827 if (!interf()->is_interface()) { |
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828 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
0 | 829 } |
6934 | 830 if (InstanceKlass::cast(interf())->has_default_methods()) { |
831 *has_default_methods = true; | |
832 } | |
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833 interfaces->at_put(index, interf()); |
0 | 834 } |
835 | |
836 if (!_need_verify || length <= 1) { | |
837 return interfaces; | |
838 } | |
839 | |
840 // Check if there's any duplicates in interfaces | |
841 ResourceMark rm(THREAD); | |
842 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
843 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
844 initialize_hashtable(interface_names); | |
845 bool dup = false; | |
846 { | |
847 debug_only(No_Safepoint_Verifier nsv;) | |
848 for (index = 0; index < length; index++) { | |
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849 Klass* k = interfaces->at(index); |
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850 Symbol* name = InstanceKlass::cast(k)->name(); |
0 | 851 // If no duplicates, add (name, NULL) in hashtable interface_names. |
852 if (!put_after_lookup(name, NULL, interface_names)) { | |
853 dup = true; | |
854 break; | |
855 } | |
856 } | |
857 } | |
858 if (dup) { | |
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859 classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
0 | 860 } |
861 | |
862 return interfaces; | |
863 } | |
864 | |
865 | |
866 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
867 // Make sure the constant pool entry is of a type appropriate to this field | |
868 guarantee_property( | |
869 (constantvalue_index > 0 && | |
870 constantvalue_index < cp->length()), | |
871 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
872 constantvalue_index, CHECK); | |
873 constantTag value_type = cp->tag_at(constantvalue_index); | |
874 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
875 case T_LONG: | |
876 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
877 break; | |
878 case T_FLOAT: | |
879 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
880 break; | |
881 case T_DOUBLE: | |
882 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
883 break; | |
884 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
885 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
886 break; | |
887 case T_OBJECT: | |
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888 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
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889 && value_type.is_string()), |
0 | 890 "Bad string initial value in class file %s", CHECK); |
891 break; | |
892 default: | |
893 classfile_parse_error( | |
894 "Unable to set initial value %u in class file %s", | |
895 constantvalue_index, CHECK); | |
896 } | |
897 } | |
898 | |
899 | |
900 // Parse attributes for a field. | |
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901 void ClassFileParser::parse_field_attributes(ClassLoaderData* loader_data, |
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902 constantPoolHandle cp, |
0 | 903 u2 attributes_count, |
904 bool is_static, u2 signature_index, | |
905 u2* constantvalue_index_addr, | |
906 bool* is_synthetic_addr, | |
907 u2* generic_signature_index_addr, | |
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908 AnnotationArray** field_annotations, |
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909 AnnotationArray** field_type_annotations, |
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910 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
0 | 911 TRAPS) { |
912 ClassFileStream* cfs = stream(); | |
913 assert(attributes_count > 0, "length should be greater than 0"); | |
914 u2 constantvalue_index = 0; | |
915 u2 generic_signature_index = 0; | |
916 bool is_synthetic = false; | |
917 u1* runtime_visible_annotations = NULL; | |
918 int runtime_visible_annotations_length = 0; | |
919 u1* runtime_invisible_annotations = NULL; | |
920 int runtime_invisible_annotations_length = 0; | |
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921 u1* runtime_visible_type_annotations = NULL; |
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922 int runtime_visible_type_annotations_length = 0; |
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923 u1* runtime_invisible_type_annotations = NULL; |
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924 int runtime_invisible_type_annotations_length = 0; |
0 | 925 while (attributes_count--) { |
926 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
927 u2 attribute_name_index = cfs->get_u2_fast(); | |
928 u4 attribute_length = cfs->get_u4_fast(); | |
929 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
930 cp->tag_at(attribute_name_index).is_utf8(), | |
931 "Invalid field attribute index %u in class file %s", | |
932 attribute_name_index, | |
933 CHECK); | |
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934 Symbol* attribute_name = cp->symbol_at(attribute_name_index); |
0 | 935 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
936 // ignore if non-static | |
937 if (constantvalue_index != 0) { | |
938 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
939 } | |
940 check_property( | |
941 attribute_length == 2, | |
942 "Invalid ConstantValue field attribute length %u in class file %s", | |
943 attribute_length, CHECK); | |
944 constantvalue_index = cfs->get_u2(CHECK); | |
945 if (_need_verify) { | |
946 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
947 } | |
948 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
949 if (attribute_length != 0) { | |
950 classfile_parse_error( | |
951 "Invalid Synthetic field attribute length %u in class file %s", | |
952 attribute_length, CHECK); | |
953 } | |
954 is_synthetic = true; | |
955 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
956 if (attribute_length != 0) { | |
957 classfile_parse_error( | |
958 "Invalid Deprecated field attribute length %u in class file %s", | |
959 attribute_length, CHECK); | |
960 } | |
961 } else if (_major_version >= JAVA_1_5_VERSION) { | |
962 if (attribute_name == vmSymbols::tag_signature()) { | |
963 if (attribute_length != 2) { | |
964 classfile_parse_error( | |
965 "Wrong size %u for field's Signature attribute in class file %s", | |
966 attribute_length, CHECK); | |
967 } | |
968 generic_signature_index = cfs->get_u2(CHECK); | |
969 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
970 runtime_visible_annotations_length = attribute_length; | |
971 runtime_visible_annotations = cfs->get_u1_buffer(); | |
972 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
973 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
974 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
975 runtime_invisible_annotations_length = attribute_length; | |
976 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
977 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
978 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
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979 } else if (attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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980 runtime_visible_type_annotations_length = attribute_length; |
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981 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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982 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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983 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
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984 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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985 runtime_invisible_type_annotations_length = attribute_length; |
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986 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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987 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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988 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
0 | 989 } else { |
990 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
991 } | |
992 } else { | |
993 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
994 } | |
995 } | |
996 | |
997 *constantvalue_index_addr = constantvalue_index; | |
998 *is_synthetic_addr = is_synthetic; | |
999 *generic_signature_index_addr = generic_signature_index; | |
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1000 *field_annotations = assemble_annotations(loader_data, |
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1001 runtime_visible_annotations, |
0 | 1002 runtime_visible_annotations_length, |
1003 runtime_invisible_annotations, | |
1004 runtime_invisible_annotations_length, | |
1005 CHECK); | |
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1006 *field_type_annotations = assemble_annotations(loader_data, |
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1007 runtime_visible_type_annotations, |
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1008 runtime_visible_type_annotations_length, |
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1009 runtime_invisible_type_annotations, |
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1010 runtime_invisible_type_annotations_length, |
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1011 CHECK); |
0 | 1012 return; |
1013 } | |
1014 | |
1015 | |
1016 // Field allocation types. Used for computing field offsets. | |
1017 | |
1018 enum FieldAllocationType { | |
1019 STATIC_OOP, // Oops | |
1020 STATIC_BYTE, // Boolean, Byte, char | |
1021 STATIC_SHORT, // shorts | |
1022 STATIC_WORD, // ints | |
3938 | 1023 STATIC_DOUBLE, // aligned long or double |
0 | 1024 NONSTATIC_OOP, |
1025 NONSTATIC_BYTE, | |
1026 NONSTATIC_SHORT, | |
1027 NONSTATIC_WORD, | |
1028 NONSTATIC_DOUBLE, | |
3938 | 1029 MAX_FIELD_ALLOCATION_TYPE, |
1030 BAD_ALLOCATION_TYPE = -1 | |
0 | 1031 }; |
1032 | |
3938 | 1033 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
1034 BAD_ALLOCATION_TYPE, // 0 | |
1035 BAD_ALLOCATION_TYPE, // 1 | |
1036 BAD_ALLOCATION_TYPE, // 2 | |
1037 BAD_ALLOCATION_TYPE, // 3 | |
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1038 NONSTATIC_BYTE , // T_BOOLEAN = 4, |
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1039 NONSTATIC_SHORT, // T_CHAR = 5, |
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1040 NONSTATIC_WORD, // T_FLOAT = 6, |
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1041 NONSTATIC_DOUBLE, // T_DOUBLE = 7, |
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1042 NONSTATIC_BYTE, // T_BYTE = 8, |
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1043 NONSTATIC_SHORT, // T_SHORT = 9, |
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1044 NONSTATIC_WORD, // T_INT = 10, |
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1045 NONSTATIC_DOUBLE, // T_LONG = 11, |
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1046 NONSTATIC_OOP, // T_OBJECT = 12, |
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1047 NONSTATIC_OOP, // T_ARRAY = 13, |
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1048 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1049 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1050 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1051 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1052 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1053 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
3938 | 1054 BAD_ALLOCATION_TYPE, // 0 |
1055 BAD_ALLOCATION_TYPE, // 1 | |
1056 BAD_ALLOCATION_TYPE, // 2 | |
1057 BAD_ALLOCATION_TYPE, // 3 | |
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1058 STATIC_BYTE , // T_BOOLEAN = 4, |
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1059 STATIC_SHORT, // T_CHAR = 5, |
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1060 STATIC_WORD, // T_FLOAT = 6, |
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1061 STATIC_DOUBLE, // T_DOUBLE = 7, |
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1062 STATIC_BYTE, // T_BYTE = 8, |
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1063 STATIC_SHORT, // T_SHORT = 9, |
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1064 STATIC_WORD, // T_INT = 10, |
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1065 STATIC_DOUBLE, // T_LONG = 11, |
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1066 STATIC_OOP, // T_OBJECT = 12, |
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1067 STATIC_OOP, // T_ARRAY = 13, |
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1068 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1069 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1070 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1071 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1072 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1073 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
0 | 1074 }; |
1075 | |
3938 | 1076 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
1077 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
1078 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
1079 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
1080 return result; | |
1081 } | |
1082 | |
1083 class FieldAllocationCount: public ResourceObj { | |
1084 public: | |
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1085 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
3938 | 1086 |
1087 FieldAllocationCount() { | |
1088 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
1089 count[i] = 0; | |
1090 } | |
1091 } | |
1092 | |
1093 FieldAllocationType update(bool is_static, BasicType type) { | |
1094 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1095 // Make sure there is no overflow with injected fields. |
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1096 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
3938 | 1097 count[atype]++; |
1098 return atype; | |
1099 } | |
1100 }; | |
1101 | |
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1102 Array<u2>* ClassFileParser::parse_fields(ClassLoaderData* loader_data, |
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1103 Symbol* class_name, |
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1104 constantPoolHandle cp, |
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1105 bool is_interface, |
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1106 FieldAllocationCount *fac, |
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1107 Array<AnnotationArray*>** fields_annotations, |
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1108 Array<AnnotationArray*>** fields_type_annotations, |
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1109 u2* java_fields_count_ptr, TRAPS) { |
0 | 1110 ClassFileStream* cfs = stream(); |
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1111 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 1112 u2 length = cfs->get_u2_fast(); |
3938 | 1113 *java_fields_count_ptr = length; |
1114 | |
1115 int num_injected = 0; | |
1116 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1117 int total_fields = length + num_injected; |
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1118 |
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1119 // The field array starts with tuples of shorts |
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1120 // [access, name index, sig index, initial value index, byte offset]. |
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1121 // A generic signature slot only exists for field with generic |
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1122 // signature attribute. And the access flag is set with |
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1123 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1124 // signature slots are at the end of the field array and after all |
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1125 // other fields data. |
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1126 // |
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1127 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1128 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1129 // ... |
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1130 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1131 // [generic signature index] |
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1132 // [generic signature index] |
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1133 // ... |
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1134 // |
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1135 // Allocate a temporary resource array for field data. For each field, |
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1136 // a slot is reserved in the temporary array for the generic signature |
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1137 // index. After parsing all fields, the data are copied to a permanent |
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1138 // array and any unused slots will be discarded. |
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1139 ResourceMark rm(THREAD); |
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1140 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1141 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
0 | 1142 |
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1143 AnnotationArray* field_annotations = NULL; |
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1144 AnnotationArray* field_type_annotations = NULL; |
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1145 // The generic signature slots start after all other fields' data. |
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1146 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1147 int num_generic_signature = 0; |
0 | 1148 for (int n = 0; n < length; n++) { |
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1149 cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
0 | 1150 |
1151 AccessFlags access_flags; | |
1152 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
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1153 verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
0 | 1154 access_flags.set_flags(flags); |
1155 | |
1156 u2 name_index = cfs->get_u2_fast(); | |
1157 int cp_size = cp->length(); | |
1158 check_property( | |
1159 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
1160 "Invalid constant pool index %u for field name in class file %s", | |
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1161 name_index, CHECK_NULL); |
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1162 Symbol* name = cp->symbol_at(name_index); |
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1163 verify_legal_field_name(name, CHECK_NULL); |
0 | 1164 |
1165 u2 signature_index = cfs->get_u2_fast(); | |
1166 check_property( | |
1167 valid_cp_range(signature_index, cp_size) && | |
1168 cp->tag_at(signature_index).is_utf8(), | |
1169 "Invalid constant pool index %u for field signature in class file %s", | |
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1170 signature_index, CHECK_NULL); |
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1171 Symbol* sig = cp->symbol_at(signature_index); |
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1172 verify_legal_field_signature(name, sig, CHECK_NULL); |
0 | 1173 |
1174 u2 constantvalue_index = 0; | |
1175 bool is_synthetic = false; | |
1176 u2 generic_signature_index = 0; | |
1177 bool is_static = access_flags.is_static(); | |
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1178 FieldAnnotationCollector parsed_annotations; |
0 | 1179 |
1180 u2 attributes_count = cfs->get_u2_fast(); | |
1181 if (attributes_count > 0) { | |
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1182 parse_field_attributes(loader_data, |
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1183 cp, attributes_count, is_static, signature_index, |
0 | 1184 &constantvalue_index, &is_synthetic, |
1185 &generic_signature_index, &field_annotations, | |
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1186 &field_type_annotations, &parsed_annotations, |
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1187 CHECK_NULL); |
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1188 if (field_annotations != NULL) { |
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1189 if (*fields_annotations == NULL) { |
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1190 *fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1191 loader_data, length, NULL, |
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1192 CHECK_NULL); |
0 | 1193 } |
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1194 (*fields_annotations)->at_put(n, field_annotations); |
0 | 1195 } |
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1196 if (field_type_annotations != NULL) { |
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1197 if (*fields_type_annotations == NULL) { |
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1198 *fields_type_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1199 loader_data, length, NULL, |
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1200 CHECK_NULL); |
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1201 } |
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1202 (*fields_type_annotations)->at_put(n, field_type_annotations); |
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1203 } |
0 | 1204 if (is_synthetic) { |
1205 access_flags.set_is_synthetic(); | |
1206 } | |
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1207 if (generic_signature_index != 0) { |
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1208 access_flags.set_field_has_generic_signature(); |
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1209 fa[generic_signature_slot] = generic_signature_index; |
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1210 generic_signature_slot ++; |
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1211 num_generic_signature ++; |
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1212 } |
0 | 1213 } |
1214 | |
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1215 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
3938 | 1216 field->initialize(access_flags.as_short(), |
1217 name_index, | |
1218 signature_index, | |
1219 constantvalue_index, | |
1220 0); | |
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1221 if (parsed_annotations.has_any_annotations()) |
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1222 parsed_annotations.apply_to(field); |
3938 | 1223 |
1224 BasicType type = cp->basic_type_for_signature_at(signature_index); | |
0 | 1225 |
1226 // Remember how many oops we encountered and compute allocation type | |
3938 | 1227 FieldAllocationType atype = fac->update(is_static, type); |
0 | 1228 |
1229 // The correct offset is computed later (all oop fields will be located together) | |
1230 // We temporarily store the allocation type in the offset field | |
3938 | 1231 field->set_offset(atype); |
1232 } | |
1233 | |
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1234 int index = length; |
3938 | 1235 if (num_injected != 0) { |
1236 for (int n = 0; n < num_injected; n++) { | |
1237 // Check for duplicates | |
1238 if (injected[n].may_be_java) { | |
1239 Symbol* name = injected[n].name(); | |
1240 Symbol* signature = injected[n].signature(); | |
1241 bool duplicate = false; | |
1242 for (int i = 0; i < length; i++) { | |
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1243 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
3938 | 1244 if (name == cp->symbol_at(f->name_index()) && |
1245 signature == cp->symbol_at(f->signature_index())) { | |
1246 // Symbol is desclared in Java so skip this one | |
1247 duplicate = true; | |
1248 break; | |
1249 } | |
1250 } | |
1251 if (duplicate) { | |
1252 // These will be removed from the field array at the end | |
1253 continue; | |
1254 } | |
1255 } | |
1256 | |
1257 // Injected field | |
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1258 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
3938 | 1259 field->initialize(JVM_ACC_FIELD_INTERNAL, |
1260 injected[n].name_index, | |
1261 injected[n].signature_index, | |
1262 0, | |
1263 0); | |
1264 | |
1265 BasicType type = FieldType::basic_type(injected[n].signature()); | |
1266 | |
1267 // Remember how many oops we encountered and compute allocation type | |
1268 FieldAllocationType atype = fac->update(false, type); | |
1269 | |
1270 // The correct offset is computed later (all oop fields will be located together) | |
1271 // We temporarily store the allocation type in the offset field | |
1272 field->set_offset(atype); | |
1273 index++; | |
1274 } | |
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1275 } |
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1276 |
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1277 // Now copy the fields' data from the temporary resource array. |
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1278 // Sometimes injected fields already exist in the Java source so |
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1279 // the fields array could be too long. In that case the |
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1280 // fields array is trimed. Also unused slots that were reserved |
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1281 // for generic signature indexes are discarded. |
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1282 Array<u2>* fields = MetadataFactory::new_array<u2>( |
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1283 loader_data, index * FieldInfo::field_slots + num_generic_signature, |
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1284 CHECK_NULL); |
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1285 { |
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1286 int i = 0; |
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1287 for (; i < index * FieldInfo::field_slots; i++) { |
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1288 fields->at_put(i, fa[i]); |
3938 | 1289 } |
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1290 for (int j = total_fields * FieldInfo::field_slots; |
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1291 j < generic_signature_slot; j++) { |
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1292 fields->at_put(i++, fa[j]); |
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1293 } |
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1294 assert(i == fields->length(), ""); |
0 | 1295 } |
1296 | |
1297 if (_need_verify && length > 1) { | |
1298 // Check duplicated fields | |
1299 ResourceMark rm(THREAD); | |
1300 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1301 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
1302 initialize_hashtable(names_and_sigs); | |
1303 bool dup = false; | |
1304 { | |
1305 debug_only(No_Safepoint_Verifier nsv;) | |
3938 | 1306 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
1307 Symbol* name = fs.name(); | |
1308 Symbol* sig = fs.signature(); | |
0 | 1309 // If no duplicates, add name/signature in hashtable names_and_sigs. |
1310 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
1311 dup = true; | |
1312 break; | |
1313 } | |
1314 } | |
1315 } | |
1316 if (dup) { | |
1317 classfile_parse_error("Duplicate field name&signature in class file %s", | |
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1318 CHECK_NULL); |
0 | 1319 } |
1320 } | |
1321 | |
1322 return fields; | |
1323 } | |
1324 | |
1325 | |
1326 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
1327 while (length-- > 0) { | |
1328 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
1329 } | |
1330 } | |
1331 | |
1332 | |
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1333 u2* ClassFileParser::parse_exception_table(ClassLoaderData* loader_data, |
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1334 u4 code_length, |
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1335 u4 exception_table_length, |
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1336 constantPoolHandle cp, |
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1337 TRAPS) { |
0 | 1338 ClassFileStream* cfs = stream(); |
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1339 |
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1340 u2* exception_table_start = cfs->get_u2_buffer(); |
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1341 assert(exception_table_start != NULL, "null exception table"); |
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1342 cfs->guarantee_more(8 * exception_table_length, CHECK_NULL); // start_pc, end_pc, handler_pc, catch_type_index |
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1343 // Will check legal target after parsing code array in verifier. |
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1344 if (_need_verify) { |
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1345 for (unsigned int i = 0; i < exception_table_length; i++) { |
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1346 u2 start_pc = cfs->get_u2_fast(); |
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1347 u2 end_pc = cfs->get_u2_fast(); |
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1348 u2 handler_pc = cfs->get_u2_fast(); |
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1349 u2 catch_type_index = cfs->get_u2_fast(); |
0 | 1350 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), |
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1351 "Illegal exception table range in class file %s", |
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1352 CHECK_NULL); |
0 | 1353 guarantee_property(handler_pc < code_length, |
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1354 "Illegal exception table handler in class file %s", |
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1355 CHECK_NULL); |
0 | 1356 if (catch_type_index != 0) { |
1357 guarantee_property(valid_cp_range(catch_type_index, cp->length()) && | |
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1358 is_klass_reference(cp, catch_type_index), |
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1359 "Catch type in exception table has bad constant type in class file %s", CHECK_NULL); |
0 | 1360 } |
1361 } | |
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1362 } else { |
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1363 cfs->skip_u2_fast(exception_table_length * 4); |
0 | 1364 } |
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1365 return exception_table_start; |
0 | 1366 } |
1367 | |
1368 void ClassFileParser::parse_linenumber_table( | |
1369 u4 code_attribute_length, u4 code_length, | |
1370 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
1371 ClassFileStream* cfs = stream(); | |
1372 unsigned int num_entries = cfs->get_u2(CHECK); | |
1373 | |
1374 // Each entry is a u2 start_pc, and a u2 line_number | |
1375 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
1376 | |
1377 // Verify line number attribute and table length | |
1378 check_property( | |
1379 code_attribute_length == sizeof(u2) + length_in_bytes, | |
1380 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
1381 | |
1382 cfs->guarantee_more(length_in_bytes, CHECK); | |
1383 | |
1384 if ((*write_stream) == NULL) { | |
1385 if (length_in_bytes > fixed_buffer_size) { | |
1386 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
1387 } else { | |
1388 (*write_stream) = new CompressedLineNumberWriteStream( | |
1389 linenumbertable_buffer, fixed_buffer_size); | |
1390 } | |
1391 } | |
1392 | |
1393 while (num_entries-- > 0) { | |
1394 u2 bci = cfs->get_u2_fast(); // start_pc | |
1395 u2 line = cfs->get_u2_fast(); // line_number | |
1396 guarantee_property(bci < code_length, | |
1397 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
1398 (*write_stream)->write_pair(bci, line); | |
1399 } | |
1400 } | |
1401 | |
1402 | |
1403 // Class file LocalVariableTable elements. | |
1404 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
1405 public: | |
1406 u2 start_bci; | |
1407 u2 length; | |
1408 u2 name_cp_index; | |
1409 u2 descriptor_cp_index; | |
1410 u2 slot; | |
1411 }; | |
1412 | |
1413 | |
6197 | 1414 class LVT_Hash: public CHeapObj<mtClass> { |
0 | 1415 public: |
1416 LocalVariableTableElement *_elem; // element | |
1417 LVT_Hash* _next; // Next entry in hash table | |
1418 }; | |
1419 | |
1420 unsigned int hash(LocalVariableTableElement *elem) { | |
1421 unsigned int raw_hash = elem->start_bci; | |
1422 | |
1423 raw_hash = elem->length + raw_hash * 37; | |
1424 raw_hash = elem->name_cp_index + raw_hash * 37; | |
1425 raw_hash = elem->slot + raw_hash * 37; | |
1426 | |
1427 return raw_hash % HASH_ROW_SIZE; | |
1428 } | |
1429 | |
1430 void initialize_hashtable(LVT_Hash** table) { | |
1431 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1432 table[i] = NULL; | |
1433 } | |
1434 } | |
1435 | |
1436 void clear_hashtable(LVT_Hash** table) { | |
1437 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1438 LVT_Hash* current = table[i]; | |
1439 LVT_Hash* next; | |
1440 while (current != NULL) { | |
1441 next = current->_next; | |
1442 current->_next = NULL; | |
1443 delete(current); | |
1444 current = next; | |
1445 } | |
1446 table[i] = NULL; | |
1447 } | |
1448 } | |
1449 | |
1450 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
1451 LVT_Hash* entry = table[index]; | |
1452 | |
1453 /* | |
1454 * 3-tuple start_bci/length/slot has to be unique key, | |
1455 * so the following comparison seems to be redundant: | |
1456 * && elem->name_cp_index == entry->_elem->name_cp_index | |
1457 */ | |
1458 while (entry != NULL) { | |
1459 if (elem->start_bci == entry->_elem->start_bci | |
1460 && elem->length == entry->_elem->length | |
1461 && elem->name_cp_index == entry->_elem->name_cp_index | |
1462 && elem->slot == entry->_elem->slot | |
1463 ) { | |
1464 return entry; | |
1465 } | |
1466 entry = entry->_next; | |
1467 } | |
1468 return NULL; | |
1469 } | |
1470 | |
1471 // Return false if the local variable is found in table. | |
1472 // Return true if no duplicate is found. | |
1473 // And local variable is added as a new entry in table. | |
1474 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
1475 // First lookup for duplicates | |
1476 int index = hash(elem); | |
1477 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
1478 | |
1479 if (entry != NULL) { | |
1480 return false; | |
1481 } | |
1482 // No duplicate is found, allocate a new entry and fill it. | |
1483 if ((entry = new LVT_Hash()) == NULL) { | |
1484 return false; | |
1485 } | |
1486 entry->_elem = elem; | |
1487 | |
1488 // Insert into hash table | |
1489 entry->_next = table[index]; | |
1490 table[index] = entry; | |
1491 | |
1492 return true; | |
1493 } | |
1494 | |
1495 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
1496 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
1497 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
1498 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
1499 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
1500 lvt->signature_cp_index = 0; | |
1501 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
1502 } | |
1503 | |
1504 // Function is used to parse both attributes: | |
1505 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
1506 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
1507 u2 max_locals, | |
1508 u4 code_attribute_length, | |
1509 constantPoolHandle cp, | |
1510 u2* localvariable_table_length, | |
1511 bool isLVTT, | |
1512 TRAPS) { | |
1513 ClassFileStream* cfs = stream(); | |
1514 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
1515 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
1516 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
1517 // Verify local variable table attribute has right length | |
1518 if (_need_verify) { | |
1519 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
1520 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
1521 } | |
1522 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
1523 assert(localvariable_table_start != NULL, "null local variable table"); | |
1524 if (!_need_verify) { | |
1525 cfs->skip_u2_fast(size); | |
1526 } else { | |
1527 cfs->guarantee_more(size * 2, CHECK_NULL); | |
1528 for(int i = 0; i < (*localvariable_table_length); i++) { | |
1529 u2 start_pc = cfs->get_u2_fast(); | |
1530 u2 length = cfs->get_u2_fast(); | |
1531 u2 name_index = cfs->get_u2_fast(); | |
1532 u2 descriptor_index = cfs->get_u2_fast(); | |
1533 u2 index = cfs->get_u2_fast(); | |
1534 // Assign to a u4 to avoid overflow | |
1535 u4 end_pc = (u4)start_pc + (u4)length; | |
1536 | |
1537 if (start_pc >= code_length) { | |
1538 classfile_parse_error( | |
1539 "Invalid start_pc %u in %s in class file %s", | |
1540 start_pc, tbl_name, CHECK_NULL); | |
1541 } | |
1542 if (end_pc > code_length) { | |
1543 classfile_parse_error( | |
1544 "Invalid length %u in %s in class file %s", | |
1545 length, tbl_name, CHECK_NULL); | |
1546 } | |
1547 int cp_size = cp->length(); | |
1548 guarantee_property( | |
1549 valid_cp_range(name_index, cp_size) && | |
1550 cp->tag_at(name_index).is_utf8(), | |
1551 "Name index %u in %s has bad constant type in class file %s", | |
1552 name_index, tbl_name, CHECK_NULL); | |
1553 guarantee_property( | |
1554 valid_cp_range(descriptor_index, cp_size) && | |
1555 cp->tag_at(descriptor_index).is_utf8(), | |
1556 "Signature index %u in %s has bad constant type in class file %s", | |
1557 descriptor_index, tbl_name, CHECK_NULL); | |
1558 | |
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1559 Symbol* name = cp->symbol_at(name_index); |
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1560 Symbol* sig = cp->symbol_at(descriptor_index); |
0 | 1561 verify_legal_field_name(name, CHECK_NULL); |
1562 u2 extra_slot = 0; | |
1563 if (!isLVTT) { | |
1564 verify_legal_field_signature(name, sig, CHECK_NULL); | |
1565 | |
1566 // 4894874: check special cases for double and long local variables | |
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1567 if (sig == vmSymbols::type_signature(T_DOUBLE) || |
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1568 sig == vmSymbols::type_signature(T_LONG)) { |
0 | 1569 extra_slot = 1; |
1570 } | |
1571 } | |
1572 guarantee_property((index + extra_slot) < max_locals, | |
1573 "Invalid index %u in %s in class file %s", | |
1574 index, tbl_name, CHECK_NULL); | |
1575 } | |
1576 } | |
1577 return localvariable_table_start; | |
1578 } | |
1579 | |
1580 | |
1581 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
1582 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { | |
1583 ClassFileStream* cfs = stream(); | |
1584 u2 index = 0; // index in the array with long/double occupying two slots | |
1585 u4 i1 = *u1_index; | |
1586 u4 i2 = *u2_index + 1; | |
1587 for(int i = 0; i < array_length; i++) { | |
1588 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
1589 index++; | |
1590 if (tag == ITEM_Long || tag == ITEM_Double) { | |
1591 index++; | |
1592 } else if (tag == ITEM_Object) { | |
1593 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
1594 guarantee_property(valid_cp_range(class_index, cp->length()) && | |
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|
1595 is_klass_reference(cp, class_index), |
0 | 1596 "Bad class index %u in StackMap in class file %s", |
1597 class_index, CHECK); | |
1598 } else if (tag == ITEM_Uninitialized) { | |
1599 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
1600 guarantee_property( | |
1601 offset < code_length, | |
1602 "Bad uninitialized type offset %u in StackMap in class file %s", | |
1603 offset, CHECK); | |
1604 } else { | |
1605 guarantee_property( | |
1606 tag <= (u1)ITEM_Uninitialized, | |
1607 "Unknown variable type %u in StackMap in class file %s", | |
1608 tag, CHECK); | |
1609 } | |
1610 } | |
1611 u2_array[*u2_index] = index; | |
1612 *u1_index = i1; | |
1613 *u2_index = i2; | |
1614 } | |
1615 | |
6725
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1616 Array<u1>* ClassFileParser::parse_stackmap_table( |
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|
1617 ClassLoaderData* loader_data, |
0 | 1618 u4 code_attribute_length, TRAPS) { |
1619 if (code_attribute_length == 0) | |
1620 return NULL; | |
1621 | |
1622 ClassFileStream* cfs = stream(); | |
1623 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
1624 assert(stackmap_table_start != NULL, "null stackmap table"); | |
1625 | |
1626 // check code_attribute_length first | |
1627 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
1628 | |
1629 if (!_need_verify && !DumpSharedSpaces) { | |
1630 return NULL; | |
1631 } | |
1632 | |
6725
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|
1633 Array<u1>* stackmap_data = |
da91efe96a93
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diff
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|
1634 MetadataFactory::new_array<u1>(loader_data, code_attribute_length, 0, CHECK_NULL); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
1635 |
da91efe96a93
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|
1636 memcpy((void*)stackmap_data->adr_at(0), |
0 | 1637 (void*)stackmap_table_start, code_attribute_length); |
1638 return stackmap_data; | |
1639 } | |
1640 | |
1641 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
1642 u4 method_attribute_length, | |
1643 constantPoolHandle cp, TRAPS) { | |
1644 ClassFileStream* cfs = stream(); | |
1645 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
1646 *checked_exceptions_length = cfs->get_u2_fast(); | |
1647 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
1648 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
1649 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
1650 if (!_need_verify) { | |
1651 cfs->skip_u2_fast(size); | |
1652 } else { | |
1653 // Verify each value in the checked exception table | |
1654 u2 checked_exception; | |
1655 u2 len = *checked_exceptions_length; | |
1656 cfs->guarantee_more(2 * len, CHECK_NULL); | |
1657 for (int i = 0; i < len; i++) { | |
1658 checked_exception = cfs->get_u2_fast(); | |
1659 check_property( | |
1660 valid_cp_range(checked_exception, cp->length()) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
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|
1661 is_klass_reference(cp, checked_exception), |
0 | 1662 "Exception name has bad type at constant pool %u in class file %s", |
1663 checked_exception, CHECK_NULL); | |
1664 } | |
1665 } | |
1666 // check exceptions attribute length | |
1667 if (_need_verify) { | |
1668 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
1669 sizeof(u2) * size), | |
1670 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
1671 } | |
1672 return checked_exceptions_start; | |
1673 } | |
1674 | |
1586
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6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
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|
1675 void ClassFileParser::throwIllegalSignature( |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
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|
1676 const char* type, Symbol* name, Symbol* sig, TRAPS) { |
1586
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diff
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|
1677 ResourceMark rm(THREAD); |
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
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diff
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|
1678 Exceptions::fthrow(THREAD_AND_LOCATION, |
086d73ccd6c0
6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
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diff
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|
1679 vmSymbols::java_lang_ClassFormatError(), |
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6930553: classfile format checker allows invalid method descriptor in CONSTANT_NameAndType_info in some cases
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diff
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|
1680 "%s \"%s\" in class %s has illegal signature \"%s\"", type, |
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diff
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|
1681 name->as_C_string(), _class_name->as_C_string(), sig->as_C_string()); |
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diff
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|
1682 } |
0 | 1683 |
6222
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|
1684 // Skip an annotation. Return >=limit if there is any problem. |
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|
1685 int ClassFileParser::skip_annotation(u1* buffer, int limit, int index) { |
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6711908: JVM needs direct access to some annotations
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|
1686 // annotation := atype:u2 do(nmem:u2) {member:u2 value} |
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|
1687 // value := switch (tag:u1) { ... } |
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diff
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|
1688 index += 2; // skip atype |
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diff
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|
1689 if ((index += 2) >= limit) return limit; // read nmem |
6d8f36bcef55
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diff
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|
1690 int nmem = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
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diff
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|
1691 while (--nmem >= 0 && index < limit) { |
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diff
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|
1692 index += 2; // skip member |
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diff
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|
1693 index = skip_annotation_value(buffer, limit, index); |
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6711908: JVM needs direct access to some annotations
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diff
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|
1694 } |
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6711908: JVM needs direct access to some annotations
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diff
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|
1695 return index; |
6d8f36bcef55
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diff
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|
1696 } |
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diff
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|
1697 |
6d8f36bcef55
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diff
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|
1698 // Skip an annotation value. Return >=limit if there is any problem. |
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diff
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|
1699 int ClassFileParser::skip_annotation_value(u1* buffer, int limit, int index) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1700 // value := switch (tag:u1) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1701 // case B, C, I, S, Z, D, F, J, c: con:u2; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
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diff
changeset
|
1702 // case e: e_class:u2 e_name:u2; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1703 // case s: s_con:u2; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1704 // case [: do(nval:u2) {value}; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1705 // case @: annotation; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1706 // case s: s_con:u2; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1707 // } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1708 if ((index += 1) >= limit) return limit; // read tag |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1709 u1 tag = buffer[index-1]; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
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diff
changeset
|
1710 switch (tag) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1711 case 'B': case 'C': case 'I': case 'S': case 'Z': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1712 case 'D': case 'F': case 'J': case 'c': case 's': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1713 index += 2; // skip con or s_con |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1714 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1715 case 'e': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1716 index += 4; // skip e_class, e_name |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1717 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1718 case '[': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1719 { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1720 if ((index += 2) >= limit) return limit; // read nval |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1721 int nval = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1722 while (--nval >= 0 && index < limit) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1723 index = skip_annotation_value(buffer, limit, index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
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|
1724 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1725 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1726 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1727 case '@': |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1728 index = skip_annotation(buffer, limit, index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1729 break; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1730 default: |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1731 assert(false, "annotation tag"); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1732 return limit; // bad tag byte |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1733 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1734 return index; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1735 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1736 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1737 // Sift through annotations, looking for those significant to the VM: |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1738 void ClassFileParser::parse_annotations(u1* buffer, int limit, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1739 constantPoolHandle cp, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1740 ClassFileParser::AnnotationCollector* coll, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1741 TRAPS) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1742 // annotations := do(nann:u2) {annotation} |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1743 int index = 0; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1744 if ((index += 2) >= limit) return; // read nann |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1745 int nann = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1746 enum { // initial annotation layout |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1747 atype_off = 0, // utf8 such as 'Ljava/lang/annotation/Retention;' |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1748 count_off = 2, // u2 such as 1 (one value) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1749 member_off = 4, // utf8 such as 'value' |
6d8f36bcef55
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6100
diff
changeset
|
1750 tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
6d8f36bcef55
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6100
diff
changeset
|
1751 e_tag_val = 'e', |
6d8f36bcef55
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diff
changeset
|
1752 e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
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diff
changeset
|
1753 e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
6d8f36bcef55
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diff
changeset
|
1754 e_size = 11, // end of 'e' annotation |
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6711908: JVM needs direct access to some annotations
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diff
changeset
|
1755 c_tag_val = 'c', |
6d8f36bcef55
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diff
changeset
|
1756 c_con_off = 7, // utf8 payload, such as 'I' or 'Ljava/lang/String;' |
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6100
diff
changeset
|
1757 c_size = 9, // end of 'c' annotation |
6d8f36bcef55
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diff
changeset
|
1758 min_size = 6 // smallest possible size (zero members) |
6d8f36bcef55
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diff
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|
1759 }; |
6d8f36bcef55
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6100
diff
changeset
|
1760 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
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diff
changeset
|
1761 int index0 = index; |
6d8f36bcef55
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6100
diff
changeset
|
1762 index = skip_annotation(buffer, limit, index); |
6d8f36bcef55
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parents:
6100
diff
changeset
|
1763 u1* abase = buffer + index0; |
6d8f36bcef55
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6100
diff
changeset
|
1764 int atype = Bytes::get_Java_u2(abase + atype_off); |
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diff
changeset
|
1765 int count = Bytes::get_Java_u2(abase + count_off); |
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diff
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|
1766 Symbol* aname = check_symbol_at(cp, atype); |
6d8f36bcef55
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6100
diff
changeset
|
1767 if (aname == NULL) break; // invalid annotation name |
6d8f36bcef55
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parents:
6100
diff
changeset
|
1768 Symbol* member = NULL; |
6d8f36bcef55
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parents:
6100
diff
changeset
|
1769 if (count >= 1) { |
6d8f36bcef55
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6100
diff
changeset
|
1770 int member_index = Bytes::get_Java_u2(abase + member_off); |
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6100
diff
changeset
|
1771 member = check_symbol_at(cp, member_index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1772 if (member == NULL) break; // invalid member name |
6d8f36bcef55
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jrose
parents:
6100
diff
changeset
|
1773 } |
6d8f36bcef55
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6100
diff
changeset
|
1774 |
6d8f36bcef55
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6100
diff
changeset
|
1775 // Here is where parsing particular annotations will take place. |
6d8f36bcef55
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6100
diff
changeset
|
1776 AnnotationCollector::ID id = coll->annotation_index(aname); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
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1777 if (id == AnnotationCollector::_unknown) continue; |
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1778 coll->set_annotation(id); |
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1779 // If there are no values, just set the bit and move on: |
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1780 if (count == 0) continue; |
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1781 |
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1782 // For the record, here is how annotation payloads can be collected. |
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1783 // Suppose we want to capture @Retention.value. Here is how: |
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1784 //if (id == AnnotationCollector::_class_Retention) { |
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1785 // Symbol* payload = NULL; |
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1786 // if (count == 1 |
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1787 // && e_size == (index0 - index) // match size |
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1788 // && e_tag_val == *(abase + tag_off) |
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1789 // && (check_symbol_at(cp, Bytes::get_Java_u2(abase + e_type_off)) |
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1790 // == vmSymbols::RetentionPolicy_signature()) |
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1791 // && member == vmSymbols::value_name()) { |
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1792 // payload = check_symbol_at(cp, Bytes::get_Java_u2(abase + e_con_off)); |
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1793 // } |
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1794 // check_property(payload != NULL, |
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1795 // "Invalid @Retention annotation at offset %u in class file %s", |
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1796 // index0, CHECK); |
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1797 // if (payload != NULL) { |
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1798 // payload->increment_refcount(); |
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1799 // coll->_class_RetentionPolicy = payload; |
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1800 // } |
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1801 //} |
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1802 } |
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1803 } |
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1804 |
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1805 ClassFileParser::AnnotationCollector::ID ClassFileParser::AnnotationCollector::annotation_index(Symbol* name) { |
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1806 vmSymbols::SID sid = vmSymbols::find_sid(name); |
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1807 switch (sid) { |
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1808 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
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1809 if (_location != _in_method) break; // only allow for methods |
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1810 return _method_ForceInline; |
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1811 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
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1812 if (_location != _in_method) break; // only allow for methods |
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1813 return _method_DontInline; |
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1814 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
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1815 if (_location != _in_method) break; // only allow for methods |
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1816 return _method_LambdaForm_Compiled; |
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1817 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
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1818 if (_location != _in_method) break; // only allow for methods |
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1819 return _method_LambdaForm_Hidden; |
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1820 default: break; |
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1821 } |
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1822 return AnnotationCollector::_unknown; |
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1823 } |
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1824 |
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1825 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
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1826 fatal("no field annotations yet"); |
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1827 } |
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1828 |
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1829 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
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1830 if (has_annotation(_method_ForceInline)) |
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1831 m->set_force_inline(true); |
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1832 if (has_annotation(_method_DontInline)) |
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1833 m->set_dont_inline(true); |
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1834 if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
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1835 m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
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1836 if (has_annotation(_method_LambdaForm_Hidden)) |
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1837 m->set_hidden(true); |
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1838 } |
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1839 |
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1840 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
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1841 fatal("no class annotations yet"); |
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1842 } |
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1843 |
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1844 |
0 | 1845 #define MAX_ARGS_SIZE 255 |
1846 #define MAX_CODE_SIZE 65535 | |
1847 #define INITIAL_MAX_LVT_NUMBER 256 | |
1848 | |
1849 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
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1850 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
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1851 // Method* to save footprint, so we only know the size of the resulting Method* when the |
0 | 1852 // entire method attribute is parsed. |
1853 // | |
1854 // The promoted_flags parameter is used to pass relevant access_flags | |
1855 // from the method back up to the containing klass. These flag values | |
1856 // are added to klass's access_flags. | |
1857 | |
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1858 methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data, |
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1859 constantPoolHandle cp, |
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1860 bool is_interface, |
0 | 1861 AccessFlags *promoted_flags, |
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1862 AnnotationArray** method_annotations, |
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1863 AnnotationArray** method_parameter_annotations, |
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1864 AnnotationArray** method_default_annotations, |
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1865 AnnotationArray** method_type_annotations, |
0 | 1866 TRAPS) { |
1867 ClassFileStream* cfs = stream(); | |
1868 methodHandle nullHandle; | |
1869 ResourceMark rm(THREAD); | |
1870 // Parse fixed parts | |
1871 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1872 | |
1873 int flags = cfs->get_u2_fast(); | |
1874 u2 name_index = cfs->get_u2_fast(); | |
1875 int cp_size = cp->length(); | |
1876 check_property( | |
1877 valid_cp_range(name_index, cp_size) && | |
1878 cp->tag_at(name_index).is_utf8(), | |
1879 "Illegal constant pool index %u for method name in class file %s", | |
1880 name_index, CHECK_(nullHandle)); | |
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1881 Symbol* name = cp->symbol_at(name_index); |
0 | 1882 verify_legal_method_name(name, CHECK_(nullHandle)); |
1883 | |
1884 u2 signature_index = cfs->get_u2_fast(); | |
1885 guarantee_property( | |
1886 valid_cp_range(signature_index, cp_size) && | |
1887 cp->tag_at(signature_index).is_utf8(), | |
1888 "Illegal constant pool index %u for method signature in class file %s", | |
1889 signature_index, CHECK_(nullHandle)); | |
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1890 Symbol* signature = cp->symbol_at(signature_index); |
0 | 1891 |
1892 AccessFlags access_flags; | |
1893 if (name == vmSymbols::class_initializer_name()) { | |
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1894 // We ignore the other access flags for a valid class initializer. |
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1895 // (JVM Spec 2nd ed., chapter 4.6) |
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1896 if (_major_version < 51) { // backward compatibility |
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1897 flags = JVM_ACC_STATIC; |
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1898 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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1899 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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1900 } |
0 | 1901 } else { |
1902 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
1903 } | |
1904 | |
1905 int args_size = -1; // only used when _need_verify is true | |
1906 if (_need_verify) { | |
1907 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
1908 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
1909 if (args_size > MAX_ARGS_SIZE) { | |
1910 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
1911 } | |
1912 } | |
1913 | |
1914 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
1915 | |
1916 // Default values for code and exceptions attribute elements | |
1917 u2 max_stack = 0; | |
1918 u2 max_locals = 0; | |
1919 u4 code_length = 0; | |
1920 u1* code_start = 0; | |
1921 u2 exception_table_length = 0; | |
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1922 u2* exception_table_start = NULL; |
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1923 Array<int>* exception_handlers = Universe::the_empty_int_array(); |
0 | 1924 u2 checked_exceptions_length = 0; |
1925 u2* checked_exceptions_start = NULL; | |
1926 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
1927 int linenumber_table_length = 0; | |
1928 int total_lvt_length = 0; | |
1929 u2 lvt_cnt = 0; | |
1930 u2 lvtt_cnt = 0; | |
1931 bool lvt_allocated = false; | |
1932 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1933 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1934 u2* localvariable_table_length; | |
1935 u2** localvariable_table_start; | |
1936 u2* localvariable_type_table_length; | |
1937 u2** localvariable_type_table_start; | |
1938 bool parsed_code_attribute = false; | |
1939 bool parsed_checked_exceptions_attribute = false; | |
1940 bool parsed_stackmap_attribute = false; | |
1941 // stackmap attribute - JDK1.5 | |
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1942 Array<u1>* stackmap_data = NULL; |
0 | 1943 u2 generic_signature_index = 0; |
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1944 MethodAnnotationCollector parsed_annotations; |
0 | 1945 u1* runtime_visible_annotations = NULL; |
1946 int runtime_visible_annotations_length = 0; | |
1947 u1* runtime_invisible_annotations = NULL; | |
1948 int runtime_invisible_annotations_length = 0; | |
1949 u1* runtime_visible_parameter_annotations = NULL; | |
1950 int runtime_visible_parameter_annotations_length = 0; | |
1951 u1* runtime_invisible_parameter_annotations = NULL; | |
1952 int runtime_invisible_parameter_annotations_length = 0; | |
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1953 u1* runtime_visible_type_annotations = NULL; |
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1954 int runtime_visible_type_annotations_length = 0; |
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1955 u1* runtime_invisible_type_annotations = NULL; |
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1956 int runtime_invisible_type_annotations_length = 0; |
0 | 1957 u1* annotation_default = NULL; |
1958 int annotation_default_length = 0; | |
1959 | |
1960 // Parse code and exceptions attribute | |
1961 u2 method_attributes_count = cfs->get_u2_fast(); | |
1962 while (method_attributes_count--) { | |
1963 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
1964 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
1965 u4 method_attribute_length = cfs->get_u4_fast(); | |
1966 check_property( | |
1967 valid_cp_range(method_attribute_name_index, cp_size) && | |
1968 cp->tag_at(method_attribute_name_index).is_utf8(), | |
1969 "Invalid method attribute name index %u in class file %s", | |
1970 method_attribute_name_index, CHECK_(nullHandle)); | |
1971 | |
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1972 Symbol* method_attribute_name = cp->symbol_at(method_attribute_name_index); |
0 | 1973 if (method_attribute_name == vmSymbols::tag_code()) { |
1974 // Parse Code attribute | |
1975 if (_need_verify) { | |
6934 | 1976 guarantee_property( |
1977 !access_flags.is_native() && !access_flags.is_abstract(), | |
0 | 1978 "Code attribute in native or abstract methods in class file %s", |
1979 CHECK_(nullHandle)); | |
1980 } | |
1981 if (parsed_code_attribute) { | |
1982 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
1983 } | |
1984 parsed_code_attribute = true; | |
1985 | |
1986 // Stack size, locals size, and code size | |
1987 if (_major_version == 45 && _minor_version <= 2) { | |
1988 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
1989 max_stack = cfs->get_u1_fast(); | |
1990 max_locals = cfs->get_u1_fast(); | |
1991 code_length = cfs->get_u2_fast(); | |
1992 } else { | |
1993 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
1994 max_stack = cfs->get_u2_fast(); | |
1995 max_locals = cfs->get_u2_fast(); | |
1996 code_length = cfs->get_u4_fast(); | |
1997 } | |
1998 if (_need_verify) { | |
1999 guarantee_property(args_size <= max_locals, | |
2000 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
2001 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
2002 "Invalid method Code length %u in class file %s", | |
2003 code_length, CHECK_(nullHandle)); | |
2004 } | |
2005 // Code pointer | |
2006 code_start = cfs->get_u1_buffer(); | |
2007 assert(code_start != NULL, "null code start"); | |
2008 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
2009 cfs->skip_u1_fast(code_length); | |
2010 | |
2011 // Exception handler table | |
2012 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
2013 exception_table_length = cfs->get_u2_fast(); | |
2014 if (exception_table_length > 0) { | |
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2015 exception_table_start = |
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2016 parse_exception_table(loader_data, code_length, exception_table_length, cp, CHECK_(nullHandle)); |
0 | 2017 } |
2018 | |
2019 // Parse additional attributes in code attribute | |
2020 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
2021 u2 code_attributes_count = cfs->get_u2_fast(); | |
92
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2022 |
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2023 unsigned int calculated_attribute_length = 0; |
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2024 |
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2025 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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2026 calculated_attribute_length = |
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2027 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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2028 } else { |
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2029 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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2030 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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2031 } |
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2032 calculated_attribute_length += |
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2033 code_length + |
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2034 sizeof(exception_table_length) + |
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2035 sizeof(code_attributes_count) + |
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2036 exception_table_length * |
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2037 ( sizeof(u2) + // start_pc |
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2038 sizeof(u2) + // end_pc |
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2039 sizeof(u2) + // handler_pc |
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2040 sizeof(u2) ); // catch_type_index |
0 | 2041 |
2042 while (code_attributes_count--) { | |
2043 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
2044 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
2045 u4 code_attribute_length = cfs->get_u4_fast(); | |
2046 calculated_attribute_length += code_attribute_length + | |
2047 sizeof(code_attribute_name_index) + | |
2048 sizeof(code_attribute_length); | |
2049 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
2050 cp->tag_at(code_attribute_name_index).is_utf8(), | |
2051 "Invalid code attribute name index %u in class file %s", | |
2052 code_attribute_name_index, | |
2053 CHECK_(nullHandle)); | |
2054 if (LoadLineNumberTables && | |
2055 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
2056 // Parse and compress line number table | |
2057 parse_linenumber_table(code_attribute_length, code_length, | |
2058 &linenumber_table, CHECK_(nullHandle)); | |
2059 | |
2060 } else if (LoadLocalVariableTables && | |
2061 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
2062 // Parse local variable table | |
2063 if (!lvt_allocated) { | |
2064 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2065 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2066 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2067 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2068 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2069 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2070 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2071 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2072 lvt_allocated = true; | |
2073 } | |
2074 if (lvt_cnt == max_lvt_cnt) { | |
2075 max_lvt_cnt <<= 1; | |
2076 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
2077 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
2078 } | |
2079 localvariable_table_start[lvt_cnt] = | |
2080 parse_localvariable_table(code_length, | |
2081 max_locals, | |
2082 code_attribute_length, | |
2083 cp, | |
2084 &localvariable_table_length[lvt_cnt], | |
2085 false, // is not LVTT | |
2086 CHECK_(nullHandle)); | |
2087 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
2088 lvt_cnt++; | |
2089 } else if (LoadLocalVariableTypeTables && | |
2090 _major_version >= JAVA_1_5_VERSION && | |
2091 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
2092 if (!lvt_allocated) { | |
2093 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2094 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2095 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2096 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2097 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2098 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2099 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2100 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2101 lvt_allocated = true; | |
2102 } | |
2103 // Parse local variable type table | |
2104 if (lvtt_cnt == max_lvtt_cnt) { | |
2105 max_lvtt_cnt <<= 1; | |
2106 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
2107 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
2108 } | |
2109 localvariable_type_table_start[lvtt_cnt] = | |
2110 parse_localvariable_table(code_length, | |
2111 max_locals, | |
2112 code_attribute_length, | |
2113 cp, | |
2114 &localvariable_type_table_length[lvtt_cnt], | |
2115 true, // is LVTT | |
2116 CHECK_(nullHandle)); | |
2117 lvtt_cnt++; | |
2118 } else if (UseSplitVerifier && | |
2119 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
2120 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
2121 // Stack map is only needed by the new verifier in JDK1.5. | |
2122 if (parsed_stackmap_attribute) { | |
2123 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
2124 } | |
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2125 stackmap_data = parse_stackmap_table(loader_data, code_attribute_length, CHECK_(nullHandle)); |
0 | 2126 parsed_stackmap_attribute = true; |
2127 } else { | |
2128 // Skip unknown attributes | |
2129 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
2130 } | |
2131 } | |
2132 // check method attribute length | |
2133 if (_need_verify) { | |
2134 guarantee_property(method_attribute_length == calculated_attribute_length, | |
2135 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
2136 } | |
2137 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
2138 // Parse Exceptions attribute | |
2139 if (parsed_checked_exceptions_attribute) { | |
2140 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
2141 } | |
2142 parsed_checked_exceptions_attribute = true; | |
2143 checked_exceptions_start = | |
2144 parse_checked_exceptions(&checked_exceptions_length, | |
2145 method_attribute_length, | |
2146 cp, CHECK_(nullHandle)); | |
2147 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { | |
2148 if (method_attribute_length != 0) { | |
2149 classfile_parse_error( | |
2150 "Invalid Synthetic method attribute length %u in class file %s", | |
2151 method_attribute_length, CHECK_(nullHandle)); | |
2152 } | |
2153 // Should we check that there hasn't already been a synthetic attribute? | |
2154 access_flags.set_is_synthetic(); | |
2155 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
2156 if (method_attribute_length != 0) { | |
2157 classfile_parse_error( | |
2158 "Invalid Deprecated method attribute length %u in class file %s", | |
2159 method_attribute_length, CHECK_(nullHandle)); | |
2160 } | |
2161 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2162 if (method_attribute_name == vmSymbols::tag_signature()) { | |
2163 if (method_attribute_length != 2) { | |
2164 classfile_parse_error( | |
2165 "Invalid Signature attribute length %u in class file %s", | |
2166 method_attribute_length, CHECK_(nullHandle)); | |
2167 } | |
2168 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
2169 generic_signature_index = cfs->get_u2_fast(); | |
2170 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
2171 runtime_visible_annotations_length = method_attribute_length; | |
2172 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2173 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
6934 | 2174 parse_annotations(runtime_visible_annotations, |
2175 runtime_visible_annotations_length, cp, &parsed_annotations, | |
2176 CHECK_(nullHandle)); | |
0 | 2177 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
2178 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
2179 runtime_invisible_annotations_length = method_attribute_length; | |
2180 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2181 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2182 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
2183 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
2184 runtime_visible_parameter_annotations_length = method_attribute_length; | |
2185 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
2186 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
2187 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
2188 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
2189 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
2190 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
2191 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
2192 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
2193 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
2194 annotation_default_length = method_attribute_length; | |
2195 annotation_default = cfs->get_u1_buffer(); | |
2196 assert(annotation_default != NULL, "null annotation default"); | |
2197 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
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2198 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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2199 runtime_visible_type_annotations_length = method_attribute_length; |
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2200 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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2201 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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2202 // No need for the VM to parse Type annotations |
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2203 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK_(nullHandle)); |
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2204 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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2205 runtime_invisible_type_annotations_length = method_attribute_length; |
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2206 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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2207 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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2208 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK_(nullHandle)); |
0 | 2209 } else { |
2210 // Skip unknown attributes | |
2211 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2212 } | |
2213 } else { | |
2214 // Skip unknown attributes | |
2215 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2216 } | |
2217 } | |
2218 | |
2219 if (linenumber_table != NULL) { | |
2220 linenumber_table->write_terminator(); | |
2221 linenumber_table_length = linenumber_table->position(); | |
2222 } | |
2223 | |
2224 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
2225 if (_need_verify) { | |
2226 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
2227 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
2228 } | |
2229 | |
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2230 // All sizing information for a Method* is finally available, now create it |
6934 | 2231 Method* m = Method::allocate( |
2232 loader_data, code_length, access_flags, linenumber_table_length, | |
2233 total_lvt_length, exception_table_length, checked_exceptions_length, | |
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2234 generic_signature_index, ConstMethod::NORMAL, CHECK_(nullHandle)); |
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2235 |
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2236 ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
0 | 2237 |
2238 // Fill in information from fixed part (access_flags already set) | |
2239 m->set_constants(cp()); | |
2240 m->set_name_index(name_index); | |
2241 m->set_signature_index(signature_index); | |
2242 #ifdef CC_INTERP | |
2243 // hmm is there a gc issue here?? | |
2244 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
2245 m->set_result_index(rtf.type()); | |
2246 #endif | |
2247 | |
2248 if (args_size >= 0) { | |
2249 m->set_size_of_parameters(args_size); | |
2250 } else { | |
2251 m->compute_size_of_parameters(THREAD); | |
2252 } | |
2253 #ifdef ASSERT | |
2254 if (args_size >= 0) { | |
2255 m->compute_size_of_parameters(THREAD); | |
2256 assert(args_size == m->size_of_parameters(), ""); | |
2257 } | |
2258 #endif | |
2259 | |
2260 // Fill in code attribute information | |
2261 m->set_max_stack(max_stack); | |
2262 m->set_max_locals(max_locals); | |
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2263 m->constMethod()->set_stackmap_data(stackmap_data); |
0 | 2264 |
2265 // Copy byte codes | |
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2266 m->set_code(code_start); |
0 | 2267 |
2268 // Copy line number table | |
2269 if (linenumber_table != NULL) { | |
2270 memcpy(m->compressed_linenumber_table(), | |
2271 linenumber_table->buffer(), linenumber_table_length); | |
2272 } | |
2273 | |
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2274 // Copy exception table |
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2275 if (exception_table_length > 0) { |
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2276 int size = |
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2277 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
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2278 copy_u2_with_conversion((u2*) m->exception_table_start(), |
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2279 exception_table_start, size); |
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2280 } |
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2281 |
0 | 2282 // Copy checked exceptions |
2283 if (checked_exceptions_length > 0) { | |
2284 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
2285 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
2286 } | |
2287 | |
2288 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
2289 * | |
2290 * Rules for LVT's and LVTT's are: | |
2291 * - There can be any number of LVT's and LVTT's. | |
2292 * - If there are n LVT's, it is the same as if there was just | |
2293 * one LVT containing all the entries from the n LVT's. | |
2294 * - There may be no more than one LVT entry per local variable. | |
2295 * Two LVT entries are 'equal' if these fields are the same: | |
2296 * start_pc, length, name, slot | |
2297 * - There may be no more than one LVTT entry per each LVT entry. | |
2298 * Each LVTT entry has to match some LVT entry. | |
2299 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
2300 */ | |
2301 if (total_lvt_length > 0) { | |
2302 int tbl_no, idx; | |
2303 | |
2304 promoted_flags->set_has_localvariable_table(); | |
2305 | |
2306 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
2307 initialize_hashtable(lvt_Hash); | |
2308 | |
2309 // To fill LocalVariableTable in | |
2310 Classfile_LVT_Element* cf_lvt; | |
2311 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
2312 | |
2313 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
2314 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
2315 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
2316 copy_lvt_element(&cf_lvt[idx], lvt); | |
2317 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
2318 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
2319 && _need_verify | |
2320 && _major_version >= JAVA_1_5_VERSION ) { | |
2321 clear_hashtable(lvt_Hash); | |
2322 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
2323 "entry for '%s' in class file %s", | |
2324 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
2325 CHECK_(nullHandle)); | |
2326 } | |
2327 } | |
2328 } | |
2329 | |
2330 // To merge LocalVariableTable and LocalVariableTypeTable | |
2331 Classfile_LVT_Element* cf_lvtt; | |
2332 LocalVariableTableElement lvtt_elem; | |
2333 | |
2334 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
2335 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
2336 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
2337 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
2338 int index = hash(&lvtt_elem); | |
2339 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
2340 if (entry == NULL) { | |
2341 if (_need_verify) { | |
2342 clear_hashtable(lvt_Hash); | |
2343 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
2344 "does not match any LVT entry", | |
2345 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
2346 CHECK_(nullHandle)); | |
2347 } | |
2348 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
2349 clear_hashtable(lvt_Hash); | |
2350 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
2351 "entry for '%s' in class file %s", | |
2352 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
2353 CHECK_(nullHandle)); | |
2354 } else { | |
2355 // to add generic signatures into LocalVariableTable | |
2356 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
2357 } | |
2358 } | |
2359 } | |
2360 clear_hashtable(lvt_Hash); | |
2361 } | |
2362 | |
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2363 if (parsed_annotations.has_any_annotations()) |
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2364 parsed_annotations.apply_to(m); |
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2365 *method_annotations = assemble_annotations(loader_data, |
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2366 runtime_visible_annotations, |
0 | 2367 runtime_visible_annotations_length, |
2368 runtime_invisible_annotations, | |
2369 runtime_invisible_annotations_length, | |
2370 CHECK_(nullHandle)); | |
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2371 *method_parameter_annotations = assemble_annotations(loader_data, |
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2372 runtime_visible_parameter_annotations, |
0 | 2373 runtime_visible_parameter_annotations_length, |
2374 runtime_invisible_parameter_annotations, | |
2375 runtime_invisible_parameter_annotations_length, | |
2376 CHECK_(nullHandle)); | |
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2377 *method_default_annotations = assemble_annotations(loader_data, |
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2378 annotation_default, |
0 | 2379 annotation_default_length, |
2380 NULL, | |
2381 0, | |
2382 CHECK_(nullHandle)); | |
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2383 *method_type_annotations = assemble_annotations(loader_data, |
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2384 runtime_visible_type_annotations, |
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2385 runtime_visible_type_annotations_length, |
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2386 runtime_invisible_type_annotations, |
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2387 runtime_invisible_type_annotations_length, |
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2388 CHECK_(nullHandle)); |
0 | 2389 |
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2390 if (name == vmSymbols::finalize_method_name() && |
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2391 signature == vmSymbols::void_method_signature()) { |
0 | 2392 if (m->is_empty_method()) { |
2393 _has_empty_finalizer = true; | |
2394 } else { | |
2395 _has_finalizer = true; | |
2396 } | |
2397 } | |
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2398 if (name == vmSymbols::object_initializer_name() && |
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2399 signature == vmSymbols::void_method_signature() && |
0 | 2400 m->is_vanilla_constructor()) { |
2401 _has_vanilla_constructor = true; | |
2402 } | |
2403 | |
2404 return m; | |
2405 } | |
2406 | |
2407 | |
2408 // The promoted_flags parameter is used to pass relevant access_flags | |
2409 // from the methods back up to the containing klass. These flag values | |
2410 // are added to klass's access_flags. | |
2411 | |
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2412 Array<Method*>* ClassFileParser::parse_methods(ClassLoaderData* loader_data, |
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2413 constantPoolHandle cp, |
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2414 bool is_interface, |
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2415 AccessFlags* promoted_flags, |
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2416 bool* has_final_method, |
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2417 Array<AnnotationArray*>** methods_annotations, |
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2418 Array<AnnotationArray*>** methods_parameter_annotations, |
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2419 Array<AnnotationArray*>** methods_default_annotations, |
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2420 Array<AnnotationArray*>** methods_type_annotations, |
6934 | 2421 bool* has_default_methods, |
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2422 TRAPS) { |
0 | 2423 ClassFileStream* cfs = stream(); |
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2424 AnnotationArray* method_annotations = NULL; |
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2425 AnnotationArray* method_parameter_annotations = NULL; |
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2426 AnnotationArray* method_default_annotations = NULL; |
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2427 AnnotationArray* method_type_annotations = NULL; |
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2428 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 2429 u2 length = cfs->get_u2_fast(); |
2430 if (length == 0) { | |
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2431 return Universe::the_empty_method_array(); |
0 | 2432 } else { |
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2433 // FIXME: Handle leaks at later failures. |
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2434 Array<Method*>* methods = MetadataFactory::new_array<Method*>(loader_data, length, NULL, CHECK_NULL); |
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2435 |
0 | 2436 HandleMark hm(THREAD); |
2437 for (int index = 0; index < length; index++) { | |
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2438 methodHandle method = parse_method(loader_data, |
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2439 cp, is_interface, |
0 | 2440 promoted_flags, |
2441 &method_annotations, | |
2442 &method_parameter_annotations, | |
2443 &method_default_annotations, | |
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2444 &method_type_annotations, |
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2445 CHECK_NULL); |
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2446 |
0 | 2447 if (method->is_final()) { |
2448 *has_final_method = true; | |
2449 } | |
6934 | 2450 if (is_interface && !method->is_abstract() && !method->is_static()) { |
2451 // default method | |
2452 *has_default_methods = true; | |
2453 } | |
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2454 methods->at_put(index, method()); |
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2455 if (*methods_annotations == NULL) { |
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2456 *methods_annotations = |
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2457 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
0 | 2458 } |
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2459 (*methods_annotations)->at_put(index, method_annotations); |
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2460 if (*methods_parameter_annotations == NULL) { |
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2461 *methods_parameter_annotations = |
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2462 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
0 | 2463 } |
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2464 (*methods_parameter_annotations)->at_put(index, method_parameter_annotations); |
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2465 if (*methods_default_annotations == NULL) { |
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2466 *methods_default_annotations = |
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2467 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
0 | 2468 } |
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2469 (*methods_default_annotations)->at_put(index, method_default_annotations); |
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2470 if (*methods_type_annotations == NULL) { |
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2471 *methods_type_annotations = |
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2472 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
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2473 } |
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2474 (*methods_type_annotations)->at_put(index, method_type_annotations); |
0 | 2475 } |
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2476 |
0 | 2477 if (_need_verify && length > 1) { |
2478 // Check duplicated methods | |
2479 ResourceMark rm(THREAD); | |
2480 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2481 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
2482 initialize_hashtable(names_and_sigs); | |
2483 bool dup = false; | |
2484 { | |
2485 debug_only(No_Safepoint_Verifier nsv;) | |
2486 for (int i = 0; i < length; i++) { | |
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2487 Method* m = methods->at(i); |
0 | 2488 // If no duplicates, add name/signature in hashtable names_and_sigs. |
2489 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
2490 dup = true; | |
2491 break; | |
2492 } | |
2493 } | |
2494 } | |
2495 if (dup) { | |
2496 classfile_parse_error("Duplicate method name&signature in class file %s", | |
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2497 CHECK_NULL); |
0 | 2498 } |
2499 } | |
2500 return methods; | |
2501 } | |
2502 } | |
2503 | |
2504 | |
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2505 Array<int>* ClassFileParser::sort_methods(ClassLoaderData* loader_data, |
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2506 Array<Method*>* methods, |
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2507 Array<AnnotationArray*>* methods_annotations, |
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2508 Array<AnnotationArray*>* methods_parameter_annotations, |
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2509 Array<AnnotationArray*>* methods_default_annotations, |
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2510 Array<AnnotationArray*>* methods_type_annotations, |
0 | 2511 TRAPS) { |
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2512 int length = methods->length(); |
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2513 // If JVMTI original method ordering or sharing is enabled we have to |
0 | 2514 // remember the original class file ordering. |
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2515 // We temporarily use the vtable_index field in the Method* to store the |
0 | 2516 // class file index, so we can read in after calling qsort. |
3245
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|
2517 // Put the method ordering in the shared archive. |
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2518 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
0 | 2519 for (int index = 0; index < length; index++) { |
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2520 Method* m = methods->at(index); |
0 | 2521 assert(!m->valid_vtable_index(), "vtable index should not be set"); |
2522 m->set_vtable_index(index); | |
2523 } | |
2524 } | |
2525 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
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2526 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
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2527 Method::sort_methods(methods, methods_annotations, |
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2528 methods_parameter_annotations, |
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2529 methods_default_annotations, |
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2530 methods_type_annotations); |
0 | 2531 |
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2532 // If JVMTI original method ordering or sharing is enabled construct int |
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|
2533 // array remembering the original ordering |
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|
2534 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
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2535 Array<int>* method_ordering = MetadataFactory::new_array<int>(loader_data, length, CHECK_NULL); |
0 | 2536 for (int index = 0; index < length; index++) { |
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2537 Method* m = methods->at(index); |
0 | 2538 int old_index = m->vtable_index(); |
2539 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
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2540 method_ordering->at_put(index, old_index); |
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2541 m->set_vtable_index(Method::invalid_vtable_index); |
0 | 2542 } |
2543 return method_ordering; | |
2544 } else { | |
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2545 return Universe::the_empty_int_array(); |
0 | 2546 } |
2547 } | |
2548 | |
2549 | |
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2550 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS) { |
0 | 2551 ClassFileStream* cfs = stream(); |
2552 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
2553 u2 sourcefile_index = cfs->get_u2_fast(); | |
2554 check_property( | |
2555 valid_cp_range(sourcefile_index, cp->length()) && | |
2556 cp->tag_at(sourcefile_index).is_utf8(), | |
2557 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
2558 sourcefile_index, CHECK); | |
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2559 set_class_sourcefile(cp->symbol_at(sourcefile_index)); |
0 | 2560 } |
2561 | |
2562 | |
2563 | |
2564 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
2565 int length, TRAPS) { | |
2566 ClassFileStream* cfs = stream(); | |
2567 u1* sde_buffer = cfs->get_u1_buffer(); | |
2568 assert(sde_buffer != NULL, "null sde buffer"); | |
2569 | |
2570 // Don't bother storing it if there is no way to retrieve it | |
2571 if (JvmtiExport::can_get_source_debug_extension()) { | |
6226 | 2572 assert((length+1) > length, "Overflow checking"); |
2573 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
2574 for (int i = 0; i < length; i++) { | |
2575 sde[i] = sde_buffer[i]; | |
2576 } | |
2577 sde[length] = '\0'; | |
2578 set_class_sde_buffer((char*)sde, length); | |
0 | 2579 } |
2580 // Got utf8 string, set stream position forward | |
2581 cfs->skip_u1(length, CHECK); | |
2582 } | |
2583 | |
2584 | |
2585 // Inner classes can be static, private or protected (classic VM does this) | |
2586 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
2587 | |
2588 // Return number of classes in the inner classes attribute table | |
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2589 u2 ClassFileParser::parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
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2590 u1* inner_classes_attribute_start, |
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2591 bool parsed_enclosingmethod_attribute, |
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2592 u2 enclosing_method_class_index, |
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2593 u2 enclosing_method_method_index, |
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2594 constantPoolHandle cp, |
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2595 TRAPS) { |
0 | 2596 ClassFileStream* cfs = stream(); |
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2597 u1* current_mark = cfs->current(); |
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2598 u2 length = 0; |
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2599 if (inner_classes_attribute_start != NULL) { |
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2600 cfs->set_current(inner_classes_attribute_start); |
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2601 cfs->guarantee_more(2, CHECK_0); // length |
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2602 length = cfs->get_u2_fast(); |
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2603 } |
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2604 |
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2605 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
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2606 // method data: |
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2607 // [inner_class_info_index, |
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2608 // outer_class_info_index, |
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2609 // inner_name_index, |
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2610 // inner_class_access_flags, |
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2611 // ... |
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2612 // enclosing_method_class_index, |
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2613 // enclosing_method_method_index] |
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2614 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
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2615 // FIXME: Will leak on exceptions. |
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2616 Array<u2>* inner_classes = MetadataFactory::new_array<u2>(loader_data, size, CHECK_0); |
0 | 2617 int index = 0; |
2618 int cp_size = cp->length(); | |
2619 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
2620 for (int n = 0; n < length; n++) { | |
2621 // Inner class index | |
2622 u2 inner_class_info_index = cfs->get_u2_fast(); | |
2623 check_property( | |
2624 inner_class_info_index == 0 || | |
2625 (valid_cp_range(inner_class_info_index, cp_size) && | |
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|
2626 is_klass_reference(cp, inner_class_info_index)), |
0 | 2627 "inner_class_info_index %u has bad constant type in class file %s", |
2628 inner_class_info_index, CHECK_0); | |
2629 // Outer class index | |
2630 u2 outer_class_info_index = cfs->get_u2_fast(); | |
2631 check_property( | |
2632 outer_class_info_index == 0 || | |
2633 (valid_cp_range(outer_class_info_index, cp_size) && | |
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2634 is_klass_reference(cp, outer_class_info_index)), |
0 | 2635 "outer_class_info_index %u has bad constant type in class file %s", |
2636 outer_class_info_index, CHECK_0); | |
2637 // Inner class name | |
2638 u2 inner_name_index = cfs->get_u2_fast(); | |
2639 check_property( | |
2640 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
2641 cp->tag_at(inner_name_index).is_utf8()), | |
2642 "inner_name_index %u has bad constant type in class file %s", | |
2643 inner_name_index, CHECK_0); | |
2644 if (_need_verify) { | |
2645 guarantee_property(inner_class_info_index != outer_class_info_index, | |
2646 "Class is both outer and inner class in class file %s", CHECK_0); | |
2647 } | |
2648 // Access flags | |
2649 AccessFlags inner_access_flags; | |
2650 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
2651 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2652 // Set abstract bit for old class files for backward compatibility | |
2653 flags |= JVM_ACC_ABSTRACT; | |
2654 } | |
2655 verify_legal_class_modifiers(flags, CHECK_0); | |
2656 inner_access_flags.set_flags(flags); | |
2657 | |
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2658 inner_classes->at_put(index++, inner_class_info_index); |
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2659 inner_classes->at_put(index++, outer_class_info_index); |
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2660 inner_classes->at_put(index++, inner_name_index); |
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2661 inner_classes->at_put(index++, inner_access_flags.as_short()); |
0 | 2662 } |
2663 | |
2664 // 4347400: make sure there's no duplicate entry in the classes array | |
2665 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
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2666 for(int i = 0; i < length * 4; i += 4) { |
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|
2667 for(int j = i + 4; j < length * 4; j += 4) { |
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2668 guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
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2669 inner_classes->at(i+1) != inner_classes->at(j+1) || |
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2670 inner_classes->at(i+2) != inner_classes->at(j+2) || |
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2671 inner_classes->at(i+3) != inner_classes->at(j+3)), |
0 | 2672 "Duplicate entry in InnerClasses in class file %s", |
2673 CHECK_0); | |
2674 } | |
2675 } | |
2676 } | |
2677 | |
5967
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|
2678 // Set EnclosingMethod class and method indexes. |
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|
2679 if (parsed_enclosingmethod_attribute) { |
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2680 inner_classes->at_put(index++, enclosing_method_class_index); |
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2681 inner_classes->at_put(index++, enclosing_method_method_index); |
5967
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|
2682 } |
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|
2683 assert(index == size, "wrong size"); |
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|
2684 |
6725
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|
2685 // Update InstanceKlass with inner class info. |
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|
2686 set_class_inner_classes(inner_classes); |
5967
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|
2687 |
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|
2688 // Restore buffer's current position. |
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|
2689 cfs->set_current(current_mark); |
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|
2690 |
0 | 2691 return length; |
2692 } | |
2693 | |
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|
2694 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS) { |
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|
2695 set_class_synthetic_flag(true); |
0 | 2696 } |
2697 | |
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|
2698 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS) { |
0 | 2699 ClassFileStream* cfs = stream(); |
2700 u2 signature_index = cfs->get_u2(CHECK); | |
2701 check_property( | |
2702 valid_cp_range(signature_index, cp->length()) && | |
2703 cp->tag_at(signature_index).is_utf8(), | |
2704 "Invalid constant pool index %u in Signature attribute in class file %s", | |
2705 signature_index, CHECK); | |
6222
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|
2706 set_class_generic_signature(cp->symbol_at(signature_index)); |
0 | 2707 } |
2708 | |
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2709 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, |
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2710 constantPoolHandle cp, |
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diff
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|
2711 u4 attribute_byte_length, TRAPS) { |
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diff
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|
2712 ClassFileStream* cfs = stream(); |
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diff
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|
2713 u1* current_start = cfs->current(); |
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diff
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|
2714 |
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diff
changeset
|
2715 cfs->guarantee_more(2, CHECK); // length |
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diff
changeset
|
2716 int attribute_array_length = cfs->get_u2_fast(); |
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|
2717 |
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diff
changeset
|
2718 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
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diff
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|
2719 "Short length on BootstrapMethods in class file %s", |
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diff
changeset
|
2720 CHECK); |
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diff
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|
2721 |
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diff
changeset
|
2722 // The attribute contains a counted array of counted tuples of shorts, |
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diff
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|
2723 // represending bootstrap specifiers: |
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diff
changeset
|
2724 // length*{bootstrap_method_index, argument_count*{argument_index}} |
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diff
changeset
|
2725 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
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diff
changeset
|
2726 // operand_count = number of shorts in attr, except for leading length |
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diff
changeset
|
2727 |
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diff
changeset
|
2728 // The attribute is copied into a short[] array. |
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diff
changeset
|
2729 // The array begins with a series of short[2] pairs, one for each tuple. |
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diff
changeset
|
2730 int index_size = (attribute_array_length * 2); |
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diff
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|
2731 |
6725
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|
2732 Array<u2>* operands = MetadataFactory::new_array<u2>(loader_data, index_size + operand_count, CHECK); |
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|
2733 |
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diff
changeset
|
2734 int operand_fill_index = index_size; |
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diff
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|
2735 int cp_size = cp->length(); |
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diff
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|
2736 |
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diff
changeset
|
2737 for (int n = 0; n < attribute_array_length; n++) { |
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diff
changeset
|
2738 // Store a 32-bit offset into the header of the operand array. |
6725
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|
2739 ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
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diff
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|
2740 |
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diff
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|
2741 // Read a bootstrap specifier. |
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diff
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|
2742 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
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2743 u2 bootstrap_method_index = cfs->get_u2_fast(); |
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diff
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2744 u2 argument_count = cfs->get_u2_fast(); |
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diff
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|
2745 check_property( |
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diff
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|
2746 valid_cp_range(bootstrap_method_index, cp_size) && |
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diff
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|
2747 cp->tag_at(bootstrap_method_index).is_method_handle(), |
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diff
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|
2748 "bootstrap_method_index %u has bad constant type in class file %s", |
2085 | 2749 bootstrap_method_index, |
2011
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|
2750 CHECK); |
6725
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2751 operands->at_put(operand_fill_index++, bootstrap_method_index); |
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2752 operands->at_put(operand_fill_index++, argument_count); |
2011
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|
2753 |
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diff
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|
2754 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
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diff
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|
2755 for (int j = 0; j < argument_count; j++) { |
2085 | 2756 u2 argument_index = cfs->get_u2_fast(); |
2011
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diff
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|
2757 check_property( |
2085 | 2758 valid_cp_range(argument_index, cp_size) && |
2759 cp->tag_at(argument_index).is_loadable_constant(), | |
2011
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diff
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|
2760 "argument_index %u has bad constant type in class file %s", |
2085 | 2761 argument_index, |
2011
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|
2762 CHECK); |
6725
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2763 operands->at_put(operand_fill_index++, argument_index); |
2011
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diff
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|
2764 } |
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diff
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|
2765 } |
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diff
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|
2766 |
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|
2767 assert(operand_fill_index == operands->length(), "exact fill"); |
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2768 assert(ConstantPool::operand_array_length(operands) == attribute_array_length, "correct decode"); |
2011
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|
2769 |
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diff
changeset
|
2770 u1* current_end = cfs->current(); |
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diff
changeset
|
2771 guarantee_property(current_end == current_start + attribute_byte_length, |
dad31fc330cd
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diff
changeset
|
2772 "Bad length on BootstrapMethods in class file %s", |
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diff
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|
2773 CHECK); |
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|
2774 |
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|
2775 cp->set_operands(operands); |
2011
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diff
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|
2776 } |
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|
2777 |
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|
2778 void ClassFileParser::parse_classfile_attributes(ClassLoaderData* loader_data, |
da91efe96a93
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|
2779 constantPoolHandle cp, |
6222
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|
2780 ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
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|
2781 TRAPS) { |
0 | 2782 ClassFileStream* cfs = stream(); |
2783 // Set inner classes attribute to default sentinel | |
6725
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|
2784 set_class_inner_classes(Universe::the_empty_short_array()); |
0 | 2785 cfs->guarantee_more(2, CHECK); // attributes_count |
2786 u2 attributes_count = cfs->get_u2_fast(); | |
2787 bool parsed_sourcefile_attribute = false; | |
2788 bool parsed_innerclasses_attribute = false; | |
2789 bool parsed_enclosingmethod_attribute = false; | |
2011
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diff
changeset
|
2790 bool parsed_bootstrap_methods_attribute = false; |
0 | 2791 u1* runtime_visible_annotations = NULL; |
2792 int runtime_visible_annotations_length = 0; | |
2793 u1* runtime_invisible_annotations = NULL; | |
2794 int runtime_invisible_annotations_length = 0; | |
7457
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|
2795 u1* runtime_visible_type_annotations = NULL; |
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|
2796 int runtime_visible_type_annotations_length = 0; |
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|
2797 u1* runtime_invisible_type_annotations = NULL; |
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|
2798 int runtime_invisible_type_annotations_length = 0; |
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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|
2799 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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|
2800 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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|
2801 u2 enclosing_method_class_index = 0; |
f7c4174b33ba
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jiangli
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diff
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|
2802 u2 enclosing_method_method_index = 0; |
0 | 2803 // Iterate over attributes |
2804 while (attributes_count--) { | |
2805 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
2806 u2 attribute_name_index = cfs->get_u2_fast(); | |
2807 u4 attribute_length = cfs->get_u4_fast(); | |
2808 check_property( | |
2809 valid_cp_range(attribute_name_index, cp->length()) && | |
2810 cp->tag_at(attribute_name_index).is_utf8(), | |
2811 "Attribute name has bad constant pool index %u in class file %s", | |
2812 attribute_name_index, CHECK); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2813 Symbol* tag = cp->symbol_at(attribute_name_index); |
0 | 2814 if (tag == vmSymbols::tag_source_file()) { |
2815 // Check for SourceFile tag | |
2816 if (_need_verify) { | |
2817 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
2818 } | |
2819 if (parsed_sourcefile_attribute) { | |
2820 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
2821 } else { | |
2822 parsed_sourcefile_attribute = true; | |
2823 } | |
6222
6d8f36bcef55
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diff
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|
2824 parse_classfile_sourcefile_attribute(cp, CHECK); |
0 | 2825 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
2826 // Check for SourceDebugExtension tag | |
6222
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parents:
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diff
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|
2827 parse_classfile_source_debug_extension_attribute(cp, (int)attribute_length, CHECK); |
0 | 2828 } else if (tag == vmSymbols::tag_inner_classes()) { |
2829 // Check for InnerClasses tag | |
2830 if (parsed_innerclasses_attribute) { | |
2831 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
2832 } else { | |
2833 parsed_innerclasses_attribute = true; | |
2834 } | |
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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|
2835 inner_classes_attribute_start = cfs->get_u1_buffer(); |
f7c4174b33ba
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jiangli
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diff
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|
2836 inner_classes_attribute_length = attribute_length; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2837 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
0 | 2838 } else if (tag == vmSymbols::tag_synthetic()) { |
2839 // Check for Synthetic tag | |
2840 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
2841 if (attribute_length != 0) { | |
2842 classfile_parse_error( | |
2843 "Invalid Synthetic classfile attribute length %u in class file %s", | |
2844 attribute_length, CHECK); | |
2845 } | |
6222
6d8f36bcef55
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jrose
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6100
diff
changeset
|
2846 parse_classfile_synthetic_attribute(cp, CHECK); |
0 | 2847 } else if (tag == vmSymbols::tag_deprecated()) { |
2848 // Check for Deprecatd tag - 4276120 | |
2849 if (attribute_length != 0) { | |
2850 classfile_parse_error( | |
2851 "Invalid Deprecated classfile attribute length %u in class file %s", | |
2852 attribute_length, CHECK); | |
2853 } | |
2854 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2855 if (tag == vmSymbols::tag_signature()) { | |
2856 if (attribute_length != 2) { | |
2857 classfile_parse_error( | |
2858 "Wrong Signature attribute length %u in class file %s", | |
2859 attribute_length, CHECK); | |
2860 } | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
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diff
changeset
|
2861 parse_classfile_signature_attribute(cp, CHECK); |
0 | 2862 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
2863 runtime_visible_annotations_length = attribute_length; | |
2864 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2865 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
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|
2866 parse_annotations(runtime_visible_annotations, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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diff
changeset
|
2867 runtime_visible_annotations_length, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2868 cp, |
6d8f36bcef55
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jrose
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6100
diff
changeset
|
2869 parsed_annotations, |
6d8f36bcef55
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jrose
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diff
changeset
|
2870 CHECK); |
0 | 2871 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
2872 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
2873 runtime_invisible_annotations_length = attribute_length; | |
2874 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2875 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2876 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
2877 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
2878 if (parsed_enclosingmethod_attribute) { | |
2879 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
2880 } else { | |
2881 parsed_enclosingmethod_attribute = true; | |
2882 } | |
2883 cfs->guarantee_more(4, CHECK); // class_index, method_index | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2884 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:
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diff
changeset
|
2885 enclosing_method_method_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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4755
diff
changeset
|
2886 if (enclosing_method_class_index == 0) { |
0 | 2887 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
2888 } | |
2889 // Validate the constant pool indices and types | |
5967
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7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
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diff
changeset
|
2890 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:
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diff
changeset
|
2891 !is_klass_reference(cp, enclosing_method_class_index)) { |
0 | 2892 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
2893 } | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2894 if (enclosing_method_method_index != 0 && |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
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diff
changeset
|
2895 (!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
|
2896 !cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
0 | 2897 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
2898 } | |
2011
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diff
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|
2899 } else if (tag == vmSymbols::tag_bootstrap_methods() && |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2900 _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2901 if (parsed_bootstrap_methods_attribute) |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2902 classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
dad31fc330cd
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jrose
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diff
changeset
|
2903 parsed_bootstrap_methods_attribute = true; |
6725
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|
2904 parse_classfile_bootstrap_methods_attribute(loader_data, cp, attribute_length, CHECK); |
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|
2905 } else if (tag == vmSymbols::tag_runtime_visible_type_annotations()) { |
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|
2906 runtime_visible_type_annotations_length = attribute_length; |
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|
2907 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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|
2908 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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diff
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|
2909 // No need for the VM to parse Type annotations |
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|
2910 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
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|
2911 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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|
2912 runtime_invisible_type_annotations_length = attribute_length; |
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|
2913 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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|
2914 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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changeset
|
2915 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
0 | 2916 } else { |
2917 // Unknown attribute | |
2918 cfs->skip_u1(attribute_length, CHECK); | |
2919 } | |
2920 } else { | |
2921 // Unknown attribute | |
2922 cfs->skip_u1(attribute_length, CHECK); | |
2923 } | |
2924 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
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changeset
|
2925 AnnotationArray* annotations = assemble_annotations(loader_data, |
da91efe96a93
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coleenp
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diff
changeset
|
2926 runtime_visible_annotations, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2927 runtime_visible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2928 runtime_invisible_annotations, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2929 runtime_invisible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2930 CHECK); |
6222
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|
2931 set_class_annotations(annotations); |
7457
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|
2932 AnnotationArray* type_annotations = assemble_annotations(loader_data, |
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8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2933 runtime_visible_type_annotations, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2934 runtime_visible_type_annotations_length, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2935 runtime_invisible_type_annotations, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2936 runtime_invisible_type_annotations_length, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2937 CHECK); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2938 set_class_type_annotations(type_annotations); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2939 |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2940 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
|
2941 u2 num_of_classes = parse_classfile_inner_classes_attribute( |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2942 loader_data, |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2943 inner_classes_attribute_start, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2944 parsed_innerclasses_attribute, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2945 enclosing_method_class_index, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2946 enclosing_method_method_index, |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2947 cp, CHECK); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2948 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
|
2949 guarantee_property( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2950 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
|
2951 "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
|
2952 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2953 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2954 |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2955 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
|
2956 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
|
2957 "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
|
2958 } |
0 | 2959 } |
2960 | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2961 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2962 if (_synthetic_flag) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2963 k->set_is_synthetic(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2964 if (_sourcefile != NULL) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2965 _sourcefile->increment_refcount(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2966 k->set_source_file_name(_sourcefile); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2967 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2968 if (_generic_signature != NULL) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2969 _generic_signature->increment_refcount(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2970 k->set_generic_signature(_generic_signature); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2971 } |
6226 | 2972 if (_sde_buffer != NULL) { |
2973 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
2974 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2975 k->set_inner_classes(_inner_classes); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2976 if (_annotations != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2977 k->annotations()->set_class_annotations(_annotations); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2978 } |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2979 } |
0 | 2980 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2981 AnnotationArray* ClassFileParser::assemble_annotations(ClassLoaderData* loader_data, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2982 u1* runtime_visible_annotations, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2983 int runtime_visible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2984 u1* runtime_invisible_annotations, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2985 int runtime_invisible_annotations_length, TRAPS) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2986 AnnotationArray* annotations = NULL; |
0 | 2987 if (runtime_visible_annotations != NULL || |
2988 runtime_invisible_annotations != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2989 annotations = MetadataFactory::new_array<u1>(loader_data, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2990 runtime_visible_annotations_length + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2991 runtime_invisible_annotations_length, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2992 CHECK_(annotations)); |
0 | 2993 if (runtime_visible_annotations != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2994 for (int i = 0; i < runtime_visible_annotations_length; i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2995 annotations->at_put(i, runtime_visible_annotations[i]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2996 } |
0 | 2997 } |
2998 if (runtime_invisible_annotations != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2999 for (int i = 0; i < runtime_invisible_annotations_length; i++) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3000 int append = runtime_visible_annotations_length+i; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3001 annotations->at_put(append, runtime_invisible_annotations[i]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3002 } |
0 | 3003 } |
3004 } | |
3005 return annotations; | |
3006 } | |
3007 | |
3008 | |
6934 | 3009 #ifndef PRODUCT |
3010 static void parseAndPrintGenericSignatures( | |
3011 instanceKlassHandle this_klass, TRAPS) { | |
3012 assert(ParseAllGenericSignatures == true, "Shouldn't call otherwise"); | |
3013 ResourceMark rm; | |
3014 | |
3015 if (this_klass->generic_signature() != NULL) { | |
3016 using namespace generic; | |
3017 ClassDescriptor* spec = ClassDescriptor::parse_generic_signature(this_klass(), CHECK); | |
3018 | |
3019 tty->print_cr("Parsing %s", this_klass->generic_signature()->as_C_string()); | |
3020 spec->print_on(tty); | |
3021 | |
3022 for (int i = 0; i < this_klass->methods()->length(); ++i) { | |
3023 Method* m = this_klass->methods()->at(i); | |
3024 MethodDescriptor* method_spec = MethodDescriptor::parse_generic_signature(m, spec); | |
3025 Symbol* sig = m->generic_signature(); | |
3026 if (sig == NULL) { | |
3027 sig = m->signature(); | |
3028 } | |
3029 tty->print_cr("Parsing %s", sig->as_C_string()); | |
3030 method_spec->print_on(tty); | |
3031 } | |
3032 } | |
3033 } | |
3034 #endif // ndef PRODUCT | |
3035 | |
3036 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3037 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3038 ClassLoaderData* loader_data, |
0 | 3039 Handle protection_domain, |
710 | 3040 KlassHandle host_klass, |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3041 GrowableArray<Handle>* cp_patches, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3042 TempNewSymbol& parsed_name, |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
3043 bool verify, |
0 | 3044 TRAPS) { |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3045 // When a retransformable agent is attached, JVMTI caches the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3046 // class bytes that existed before the first retransformation. |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3047 // If RedefineClasses() was used before the retransformable |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3048 // agent attached, then the cached class bytes may not be the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3049 // original class bytes. |
0 | 3050 unsigned char *cached_class_file_bytes = NULL; |
3051 jint cached_class_file_length; | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3052 Handle class_loader(THREAD, loader_data->class_loader()); |
6934 | 3053 bool has_default_methods = false; |
3054 ResourceMark rm(THREAD); | |
0 | 3055 |
3056 ClassFileStream* cfs = stream(); | |
3057 // Timing | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3058 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3059 JavaThread* jt = (JavaThread*) THREAD; |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3060 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3061 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3062 ClassLoader::perf_class_parse_selftime(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3063 NULL, |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3064 jt->get_thread_stat()->perf_recursion_counts_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3065 jt->get_thread_stat()->perf_timers_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3066 PerfClassTraceTime::PARSE_CLASS); |
0 | 3067 |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3068 init_parsed_class_attributes(); |
0 | 3069 |
3070 if (JvmtiExport::should_post_class_file_load_hook()) { | |
4751
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3071 // Get the cached class file bytes (if any) from the class that |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3072 // is being redefined or retransformed. We use jvmti_thread_state() |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3073 // instead of JvmtiThreadState::state_for(jt) so we don't allocate |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3074 // a JvmtiThreadState any earlier than necessary. This will help |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3075 // avoid the bug described by 7126851. |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3076 JvmtiThreadState *state = jt->jvmti_thread_state(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3077 if (state != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3078 KlassHandle *h_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3079 state->get_class_being_redefined(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3080 if (h_class_being_redefined != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3081 instanceKlassHandle ikh_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3082 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3083 cached_class_file_bytes = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3084 ikh_class_being_redefined->get_cached_class_file_bytes(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3085 cached_class_file_length = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3086 ikh_class_being_redefined->get_cached_class_file_len(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3087 } |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3088 } |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3089 |
0 | 3090 unsigned char* ptr = cfs->buffer(); |
3091 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
3092 | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3093 JvmtiExport::post_class_file_load_hook(name, class_loader(), protection_domain, |
0 | 3094 &ptr, &end_ptr, |
3095 &cached_class_file_bytes, | |
3096 &cached_class_file_length); | |
3097 | |
3098 if (ptr != cfs->buffer()) { | |
3099 // JVMTI agent has modified class file data. | |
3100 // Set new class file stream using JVMTI agent modified | |
3101 // class file data. | |
3102 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
3103 set_stream(cfs); | |
3104 } | |
3105 } | |
3106 | |
710 | 3107 _host_klass = host_klass; |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3108 _cp_patches = cp_patches; |
0 | 3109 |
3110 instanceKlassHandle nullHandle; | |
3111 | |
3112 // Figure out whether we can skip format checking (matching classic VM behavior) | |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
3113 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
0 | 3114 |
3115 // Set the verify flag in stream | |
3116 cfs->set_verify(_need_verify); | |
3117 | |
3118 // Save the class file name for easier error message printing. | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3119 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
0 | 3120 |
3121 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
3122 // Magic value | |
3123 u4 magic = cfs->get_u4_fast(); | |
3124 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
3125 "Incompatible magic value %u in class file %s", | |
3126 magic, CHECK_(nullHandle)); | |
3127 | |
3128 // Version numbers | |
3129 u2 minor_version = cfs->get_u2_fast(); | |
3130 u2 major_version = cfs->get_u2_fast(); | |
3131 | |
3132 // Check version numbers - we check this even with verifier off | |
3133 if (!is_supported_version(major_version, minor_version)) { | |
2177
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3134 if (name == NULL) { |
0 | 3135 Exceptions::fthrow( |
3136 THREAD_AND_LOCATION, | |
2177
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3137 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 3138 "Unsupported major.minor version %u.%u", |
3139 major_version, | |
3140 minor_version); | |
3141 } else { | |
3142 ResourceMark rm(THREAD); | |
3143 Exceptions::fthrow( | |
3144 THREAD_AND_LOCATION, | |
2177
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3145 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 3146 "%s : Unsupported major.minor version %u.%u", |
3147 name->as_C_string(), | |
3148 major_version, | |
3149 minor_version); | |
3150 } | |
3151 return nullHandle; | |
3152 } | |
3153 | |
3154 _major_version = major_version; | |
3155 _minor_version = minor_version; | |
3156 | |
3157 | |
3158 // Check if verification needs to be relaxed for this class file | |
3159 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
3160 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
3161 | |
3162 // Constant pool | |
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3163 constantPoolHandle cp = parse_constant_pool(loader_data, CHECK_(nullHandle)); |
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3164 ConstantPoolCleaner error_handler(cp); // set constant pool to be cleaned up. |
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3165 |
0 | 3166 int cp_size = cp->length(); |
3167 | |
3168 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
3169 | |
3170 // Access flags | |
3171 AccessFlags access_flags; | |
3172 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
3173 | |
3174 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
3175 // Set abstract bit for old class files for backward compatibility | |
3176 flags |= JVM_ACC_ABSTRACT; | |
3177 } | |
3178 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
3179 access_flags.set_flags(flags); | |
3180 | |
3181 // This class and superclass | |
3182 instanceKlassHandle super_klass; | |
3183 u2 this_class_index = cfs->get_u2_fast(); | |
3184 check_property( | |
3185 valid_cp_range(this_class_index, cp_size) && | |
3186 cp->tag_at(this_class_index).is_unresolved_klass(), | |
3187 "Invalid this class index %u in constant pool in class file %s", | |
3188 this_class_index, CHECK_(nullHandle)); | |
3189 | |
2177
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3190 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
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3191 assert(class_name != NULL, "class_name can't be null"); |
0 | 3192 |
3193 // It's important to set parsed_name *before* resolving the super class. | |
3194 // (it's used for cleanup by the caller if parsing fails) | |
3195 parsed_name = class_name; | |
2177
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3196 // parsed_name is returned and can be used if there's an error, so add to |
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3197 // its reference count. Caller will decrement the refcount. |
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3198 parsed_name->increment_refcount(); |
0 | 3199 |
3200 // Update _class_name which could be null previously to be class_name | |
3201 _class_name = class_name; | |
3202 | |
3203 // Don't need to check whether this class name is legal or not. | |
3204 // It has been checked when constant pool is parsed. | |
3205 // However, make sure it is not an array type. | |
3206 if (_need_verify) { | |
3207 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
3208 "Bad class name in class file %s", | |
3209 CHECK_(nullHandle)); | |
3210 } | |
3211 | |
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3212 Klass* preserve_this_klass; // for storing result across HandleMark |
0 | 3213 |
3214 // release all handles when parsing is done | |
3215 { HandleMark hm(THREAD); | |
3216 | |
3217 // Checks if name in class file matches requested name | |
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3218 if (name != NULL && class_name != name) { |
0 | 3219 ResourceMark rm(THREAD); |
3220 Exceptions::fthrow( | |
3221 THREAD_AND_LOCATION, | |
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3222 vmSymbols::java_lang_NoClassDefFoundError(), |
0 | 3223 "%s (wrong name: %s)", |
3224 name->as_C_string(), | |
3225 class_name->as_C_string() | |
3226 ); | |
3227 return nullHandle; | |
3228 } | |
3229 | |
3230 if (TraceClassLoadingPreorder) { | |
2177
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3231 tty->print("[Loading %s", name->as_klass_external_name()); |
0 | 3232 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
3233 tty->print_cr("]"); | |
3234 } | |
3235 | |
3236 u2 super_class_index = cfs->get_u2_fast(); | |
3237 if (super_class_index == 0) { | |
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3238 check_property(class_name == vmSymbols::java_lang_Object(), |
0 | 3239 "Invalid superclass index %u in class file %s", |
3240 super_class_index, | |
3241 CHECK_(nullHandle)); | |
3242 } else { | |
3243 check_property(valid_cp_range(super_class_index, cp_size) && | |
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3244 is_klass_reference(cp, super_class_index), |
0 | 3245 "Invalid superclass index %u in class file %s", |
3246 super_class_index, | |
3247 CHECK_(nullHandle)); | |
3248 // The class name should be legal because it is checked when parsing constant pool. | |
3249 // However, make sure it is not an array type. | |
431
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3250 bool is_array = false; |
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3251 if (cp->tag_at(super_class_index).is_klass()) { |
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3252 super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
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3253 if (_need_verify) |
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3254 is_array = super_klass->oop_is_array(); |
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3255 } else if (_need_verify) { |
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3256 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
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3257 } |
0 | 3258 if (_need_verify) { |
431
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3259 guarantee_property(!is_array, |
0 | 3260 "Bad superclass name in class file %s", CHECK_(nullHandle)); |
3261 } | |
3262 } | |
3263 | |
3264 // Interfaces | |
3265 u2 itfs_len = cfs->get_u2_fast(); | |
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3266 Array<Klass*>* local_interfaces; |
0 | 3267 if (itfs_len == 0) { |
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3268 local_interfaces = Universe::the_empty_klass_array(); |
0 | 3269 } else { |
6934 | 3270 local_interfaces = parse_interfaces( |
3271 cp, itfs_len, loader_data, protection_domain, _class_name, | |
3272 &has_default_methods, CHECK_(nullHandle)); | |
0 | 3273 } |
3274 | |
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3275 u2 java_fields_count = 0; |
0 | 3276 // Fields (offsets are filled in later) |
3938 | 3277 FieldAllocationCount fac; |
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3278 Array<AnnotationArray*>* fields_annotations = NULL; |
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3279 Array<AnnotationArray*>* fields_type_annotations = NULL; |
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3280 Array<u2>* fields = parse_fields(loader_data, class_name, cp, access_flags.is_interface(), &fac, &fields_annotations, |
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3281 &fields_type_annotations, |
3938 | 3282 &java_fields_count, |
3283 CHECK_(nullHandle)); | |
0 | 3284 // Methods |
3285 bool has_final_method = false; | |
3286 AccessFlags promoted_flags; | |
3287 promoted_flags.set_flags(0); | |
3288 // These need to be oop pointers because they are allocated lazily | |
3289 // inside parse_methods inside a nested HandleMark | |
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3290 Array<AnnotationArray*>* methods_annotations = NULL; |
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3291 Array<AnnotationArray*>* methods_parameter_annotations = NULL; |
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3292 Array<AnnotationArray*>* methods_default_annotations = NULL; |
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3293 Array<AnnotationArray*>* methods_type_annotations = NULL; |
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3294 Array<Method*>* methods = parse_methods(loader_data, |
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3295 cp, access_flags.is_interface(), |
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3296 &promoted_flags, |
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3297 &has_final_method, |
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3298 &methods_annotations, |
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3299 &methods_parameter_annotations, |
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3300 &methods_default_annotations, |
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3301 &methods_type_annotations, |
6934 | 3302 &has_default_methods, |
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3303 CHECK_(nullHandle)); |
0 | 3304 |
6222
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3305 // Additional attributes |
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3306 ClassAnnotationCollector parsed_annotations; |
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3307 parse_classfile_attributes(loader_data, cp, &parsed_annotations, CHECK_(nullHandle)); |
6222
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3308 |
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3309 // Make sure this is the end of class file stream |
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3310 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
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3311 |
0 | 3312 // We check super class after class file is parsed and format is checked |
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3313 if (super_class_index > 0 && super_klass.is_null()) { |
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3314 Symbol* sk = cp->klass_name_at(super_class_index); |
0 | 3315 if (access_flags.is_interface()) { |
3316 // Before attempting to resolve the superclass, check for class format | |
3317 // errors not checked yet. | |
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3318 guarantee_property(sk == vmSymbols::java_lang_Object(), |
0 | 3319 "Interfaces must have java.lang.Object as superclass in class file %s", |
3320 CHECK_(nullHandle)); | |
3321 } | |
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3322 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, sk, |
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3323 class_loader, |
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3324 protection_domain, |
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3325 true, |
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3326 CHECK_(nullHandle)); |
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3327 |
0 | 3328 KlassHandle kh (THREAD, k); |
3329 super_klass = instanceKlassHandle(THREAD, kh()); | |
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3330 } |
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3331 if (super_klass.not_null()) { |
6934 | 3332 |
3333 if (super_klass->has_default_methods()) { | |
3334 has_default_methods = true; | |
3335 } | |
3336 | |
0 | 3337 if (super_klass->is_interface()) { |
3338 ResourceMark rm(THREAD); | |
3339 Exceptions::fthrow( | |
3340 THREAD_AND_LOCATION, | |
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3341 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 3342 "class %s has interface %s as super class", |
3343 class_name->as_klass_external_name(), | |
3344 super_klass->external_name() | |
3345 ); | |
3346 return nullHandle; | |
3347 } | |
3348 // Make sure super class is not final | |
3349 if (super_klass->is_final()) { | |
3350 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
3351 } | |
3352 } | |
3353 | |
3354 // Compute the transitive list of all unique interfaces implemented by this class | |
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3355 Array<Klass*>* transitive_interfaces = compute_transitive_interfaces(loader_data, super_klass, local_interfaces, CHECK_(nullHandle)); |
0 | 3356 |
3357 // sort methods | |
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3358 Array<int>* method_ordering = sort_methods(loader_data, |
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3359 methods, |
6831
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3360 methods_annotations, |
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3361 methods_parameter_annotations, |
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3362 methods_default_annotations, |
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3363 methods_type_annotations, |
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3364 CHECK_(nullHandle)); |
0 | 3365 |
3366 // promote flags from parse_methods() to the klass' flags | |
3367 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
3368 | |
3369 // Size of Java vtable (in words) | |
3370 int vtable_size = 0; | |
3371 int itable_size = 0; | |
3372 int num_miranda_methods = 0; | |
3373 | |
6934 | 3374 GrowableArray<Method*> all_mirandas(20); |
3375 | |
3376 klassVtable::compute_vtable_size_and_num_mirandas( | |
3377 &vtable_size, &num_miranda_methods, &all_mirandas, super_klass(), methods, | |
3378 access_flags, class_loader, class_name, local_interfaces, | |
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3379 CHECK_(nullHandle)); |
0 | 3380 |
3381 // Size of Java itable (in words) | |
3382 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
3383 | |
3384 // Field size and offset computation | |
3385 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
3386 #ifndef PRODUCT | |
3387 int orig_nonstatic_field_size = 0; | |
3388 #endif | |
3389 int static_field_size = 0; | |
3390 int next_static_oop_offset; | |
3391 int next_static_double_offset; | |
3392 int next_static_word_offset; | |
3393 int next_static_short_offset; | |
3394 int next_static_byte_offset; | |
3395 int next_static_type_offset; | |
3396 int next_nonstatic_oop_offset; | |
3397 int next_nonstatic_double_offset; | |
3398 int next_nonstatic_word_offset; | |
3399 int next_nonstatic_short_offset; | |
3400 int next_nonstatic_byte_offset; | |
3401 int next_nonstatic_type_offset; | |
3402 int first_nonstatic_oop_offset; | |
3403 int first_nonstatic_field_offset; | |
3404 int next_nonstatic_field_offset; | |
3405 | |
3406 // Calculate the starting byte offsets | |
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3407 next_static_oop_offset = InstanceMirrorKlass::offset_of_static_fields(); |
0 | 3408 next_static_double_offset = next_static_oop_offset + |
3938 | 3409 (fac.count[STATIC_OOP] * heapOopSize); |
3410 if ( fac.count[STATIC_DOUBLE] && | |
0 | 3411 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
3412 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
3413 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
3414 } | |
3415 | |
3416 next_static_word_offset = next_static_double_offset + | |
3938 | 3417 (fac.count[STATIC_DOUBLE] * BytesPerLong); |
0 | 3418 next_static_short_offset = next_static_word_offset + |
3938 | 3419 (fac.count[STATIC_WORD] * BytesPerInt); |
0 | 3420 next_static_byte_offset = next_static_short_offset + |
3938 | 3421 (fac.count[STATIC_SHORT] * BytesPerShort); |
0 | 3422 next_static_type_offset = align_size_up((next_static_byte_offset + |
3938 | 3423 fac.count[STATIC_BYTE] ), wordSize ); |
0 | 3424 static_field_size = (next_static_type_offset - |
3425 next_static_oop_offset) / wordSize; | |
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3426 |
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3427 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
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3428 nonstatic_field_size * heapOopSize; |
0 | 3429 next_nonstatic_field_offset = first_nonstatic_field_offset; |
3430 | |
3938 | 3431 unsigned int nonstatic_double_count = fac.count[NONSTATIC_DOUBLE]; |
3432 unsigned int nonstatic_word_count = fac.count[NONSTATIC_WORD]; | |
3433 unsigned int nonstatic_short_count = fac.count[NONSTATIC_SHORT]; | |
3434 unsigned int nonstatic_byte_count = fac.count[NONSTATIC_BYTE]; | |
3435 unsigned int nonstatic_oop_count = fac.count[NONSTATIC_OOP]; | |
0 | 3436 |
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3437 bool super_has_nonstatic_fields = |
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3438 (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
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3439 bool has_nonstatic_fields = super_has_nonstatic_fields || |
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3440 ((nonstatic_double_count + nonstatic_word_count + |
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3441 nonstatic_short_count + nonstatic_byte_count + |
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3442 nonstatic_oop_count) != 0); |
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3443 |
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3444 |
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3445 // Prepare list of oops for oop map generation. |
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3446 int* nonstatic_oop_offsets; |
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3447 unsigned int* nonstatic_oop_counts; |
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3448 unsigned int nonstatic_oop_map_count = 0; |
0 | 3449 |
3450 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
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3451 THREAD, int, nonstatic_oop_count + 1); |
938 | 3452 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
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3453 THREAD, unsigned int, nonstatic_oop_count + 1); |
0 | 3454 |
3938 | 3455 first_nonstatic_oop_offset = 0; // will be set for first oop field |
0 | 3456 |
3457 #ifndef PRODUCT | |
3458 if( PrintCompactFieldsSavings ) { | |
3459 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
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3460 (nonstatic_oop_count * heapOopSize); |
0 | 3461 if ( nonstatic_double_count > 0 ) { |
3462 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
3463 } | |
3464 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3465 (nonstatic_double_count * BytesPerLong); | |
3466 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3467 (nonstatic_word_count * BytesPerInt); | |
3468 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3469 (nonstatic_short_count * BytesPerShort); | |
3470 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
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3471 nonstatic_byte_count ), heapOopSize ); |
0 | 3472 orig_nonstatic_field_size = nonstatic_field_size + |
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3473 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
0 | 3474 } |
3475 #endif | |
3476 bool compact_fields = CompactFields; | |
3477 int allocation_style = FieldsAllocationStyle; | |
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3478 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
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3479 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
0 | 3480 allocation_style = 1; // Optimistic |
3481 } | |
3482 | |
3483 // The next classes have predefined hard-coded fields offsets | |
3484 // (see in JavaClasses::compute_hard_coded_offsets()). | |
3485 // Use default fields allocation order for them. | |
3486 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && | |
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3487 (class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
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3488 class_name == vmSymbols::java_lang_Class() || |
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3489 class_name == vmSymbols::java_lang_ClassLoader() || |
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3490 class_name == vmSymbols::java_lang_ref_Reference() || |
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3491 class_name == vmSymbols::java_lang_ref_SoftReference() || |
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3492 class_name == vmSymbols::java_lang_StackTraceElement() || |
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3493 class_name == vmSymbols::java_lang_String() || |
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3494 class_name == vmSymbols::java_lang_Throwable() || |
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3495 class_name == vmSymbols::java_lang_Boolean() || |
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3496 class_name == vmSymbols::java_lang_Character() || |
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3497 class_name == vmSymbols::java_lang_Float() || |
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3498 class_name == vmSymbols::java_lang_Double() || |
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3499 class_name == vmSymbols::java_lang_Byte() || |
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3500 class_name == vmSymbols::java_lang_Short() || |
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3501 class_name == vmSymbols::java_lang_Integer() || |
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3502 class_name == vmSymbols::java_lang_Long())) { |
0 | 3503 allocation_style = 0; // Allocate oops first |
3504 compact_fields = false; // Don't compact fields | |
3505 } | |
3506 | |
3507 if( allocation_style == 0 ) { | |
3508 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes | |
3509 next_nonstatic_oop_offset = next_nonstatic_field_offset; | |
3510 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
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3511 (nonstatic_oop_count * heapOopSize); |
0 | 3512 } else if( allocation_style == 1 ) { |
3513 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops | |
3514 next_nonstatic_double_offset = next_nonstatic_field_offset; | |
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3515 } else if( allocation_style == 2 ) { |
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3516 // Fields allocation: oops fields in super and sub classes are together. |
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3517 if( nonstatic_field_size > 0 && super_klass() != NULL && |
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|
3518 super_klass->nonstatic_oop_map_size() > 0 ) { |
3786
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|
3519 int map_count = super_klass->nonstatic_oop_map_count(); |
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3520 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
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3521 OopMapBlock* last_map = first_map + map_count - 1; |
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3522 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
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3523 if (next_offset == next_nonstatic_field_offset) { |
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3524 allocation_style = 0; // allocate oops first |
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3525 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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3526 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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3527 (nonstatic_oop_count * heapOopSize); |
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|
3528 } |
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|
3529 } |
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3530 if( allocation_style == 2 ) { |
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3531 allocation_style = 1; // allocate oops last |
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3532 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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|
3533 } |
0 | 3534 } else { |
3535 ShouldNotReachHere(); | |
3536 } | |
3537 | |
3538 int nonstatic_oop_space_count = 0; | |
3539 int nonstatic_word_space_count = 0; | |
3540 int nonstatic_short_space_count = 0; | |
3541 int nonstatic_byte_space_count = 0; | |
3542 int nonstatic_oop_space_offset; | |
3543 int nonstatic_word_space_offset; | |
3544 int nonstatic_short_space_offset; | |
3545 int nonstatic_byte_space_offset; | |
3546 | |
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3547 if( nonstatic_double_count > 0 ) { |
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3548 int offset = next_nonstatic_double_offset; |
0 | 3549 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
3550 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
3551 // Allocate available fields into the gap before double field. | |
3552 int length = next_nonstatic_double_offset - offset; | |
3553 assert(length == BytesPerInt, ""); | |
3554 nonstatic_word_space_offset = offset; | |
3555 if( nonstatic_word_count > 0 ) { | |
3556 nonstatic_word_count -= 1; | |
3557 nonstatic_word_space_count = 1; // Only one will fit | |
3558 length -= BytesPerInt; | |
3559 offset += BytesPerInt; | |
3560 } | |
3561 nonstatic_short_space_offset = offset; | |
3562 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
3563 nonstatic_short_count -= 1; | |
3564 nonstatic_short_space_count += 1; | |
3565 length -= BytesPerShort; | |
3566 offset += BytesPerShort; | |
3567 } | |
3568 nonstatic_byte_space_offset = offset; | |
3569 while( length > 0 && nonstatic_byte_count > 0 ) { | |
3570 nonstatic_byte_count -= 1; | |
3571 nonstatic_byte_space_count += 1; | |
3572 length -= 1; | |
3573 } | |
3574 // Allocate oop field in the gap if there are no other fields for that. | |
3575 nonstatic_oop_space_offset = offset; | |
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3576 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
0 | 3577 allocation_style != 0 ) { // when oop fields not first |
3578 nonstatic_oop_count -= 1; | |
3579 nonstatic_oop_space_count = 1; // Only one will fit | |
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3580 length -= heapOopSize; |
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3581 offset += heapOopSize; |
0 | 3582 } |
3583 } | |
3584 } | |
3585 | |
3586 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3587 (nonstatic_double_count * BytesPerLong); | |
3588 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3589 (nonstatic_word_count * BytesPerInt); | |
3590 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3591 (nonstatic_short_count * BytesPerShort); | |
3592 | |
3593 int notaligned_offset; | |
3594 if( allocation_style == 0 ) { | |
3595 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
3596 } else { // allocation_style == 1 | |
3597 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
3598 if( nonstatic_oop_count > 0 ) { | |
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3599 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
0 | 3600 } |
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3601 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
0 | 3602 } |
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3603 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
0 | 3604 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
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3605 - first_nonstatic_field_offset)/heapOopSize); |
0 | 3606 |
3607 // Iterate over fields again and compute correct offsets. | |
3608 // The field allocation type was temporarily stored in the offset slot. | |
3609 // oop fields are located before non-oop fields (static and non-static). | |
3938 | 3610 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
0 | 3611 int real_offset; |
3938 | 3612 FieldAllocationType atype = (FieldAllocationType) fs.offset(); |
0 | 3613 switch (atype) { |
3614 case STATIC_OOP: | |
3615 real_offset = next_static_oop_offset; | |
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3616 next_static_oop_offset += heapOopSize; |
0 | 3617 break; |
3618 case STATIC_BYTE: | |
3619 real_offset = next_static_byte_offset; | |
3620 next_static_byte_offset += 1; | |
3621 break; | |
3622 case STATIC_SHORT: | |
3623 real_offset = next_static_short_offset; | |
3624 next_static_short_offset += BytesPerShort; | |
3625 break; | |
3626 case STATIC_WORD: | |
3627 real_offset = next_static_word_offset; | |
3628 next_static_word_offset += BytesPerInt; | |
3629 break; | |
3630 case STATIC_DOUBLE: | |
3631 real_offset = next_static_double_offset; | |
3632 next_static_double_offset += BytesPerLong; | |
3633 break; | |
3634 case NONSTATIC_OOP: | |
3635 if( nonstatic_oop_space_count > 0 ) { | |
3636 real_offset = nonstatic_oop_space_offset; | |
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3637 nonstatic_oop_space_offset += heapOopSize; |
0 | 3638 nonstatic_oop_space_count -= 1; |
3639 } else { | |
3640 real_offset = next_nonstatic_oop_offset; | |
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3641 next_nonstatic_oop_offset += heapOopSize; |
0 | 3642 } |
3643 // Update oop maps | |
3644 if( nonstatic_oop_map_count > 0 && | |
3645 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
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|
3646 real_offset - |
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3647 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
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|
3648 heapOopSize ) { |
0 | 3649 // Extend current oop map |
938 | 3650 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
0 | 3651 } else { |
3652 // Create new oop map | |
939
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|
3653 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
938 | 3654 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
0 | 3655 nonstatic_oop_map_count += 1; |
3656 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
3657 first_nonstatic_oop_offset = real_offset; | |
3658 } | |
3659 } | |
3660 break; | |
3661 case NONSTATIC_BYTE: | |
3662 if( nonstatic_byte_space_count > 0 ) { | |
3663 real_offset = nonstatic_byte_space_offset; | |
3664 nonstatic_byte_space_offset += 1; | |
3665 nonstatic_byte_space_count -= 1; | |
3666 } else { | |
3667 real_offset = next_nonstatic_byte_offset; | |
3668 next_nonstatic_byte_offset += 1; | |
3669 } | |
3670 break; | |
3671 case NONSTATIC_SHORT: | |
3672 if( nonstatic_short_space_count > 0 ) { | |
3673 real_offset = nonstatic_short_space_offset; | |
3674 nonstatic_short_space_offset += BytesPerShort; | |
3675 nonstatic_short_space_count -= 1; | |
3676 } else { | |
3677 real_offset = next_nonstatic_short_offset; | |
3678 next_nonstatic_short_offset += BytesPerShort; | |
3679 } | |
3680 break; | |
3681 case NONSTATIC_WORD: | |
3682 if( nonstatic_word_space_count > 0 ) { | |
3683 real_offset = nonstatic_word_space_offset; | |
3684 nonstatic_word_space_offset += BytesPerInt; | |
3685 nonstatic_word_space_count -= 1; | |
3686 } else { | |
3687 real_offset = next_nonstatic_word_offset; | |
3688 next_nonstatic_word_offset += BytesPerInt; | |
3689 } | |
3690 break; | |
3691 case NONSTATIC_DOUBLE: | |
3692 real_offset = next_nonstatic_double_offset; | |
3693 next_nonstatic_double_offset += BytesPerLong; | |
3694 break; | |
3695 default: | |
3696 ShouldNotReachHere(); | |
3697 } | |
3938 | 3698 fs.set_offset(real_offset); |
0 | 3699 } |
3700 | |
3701 // Size of instances | |
3702 int instance_size; | |
3703 | |
165
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|
3704 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
0 | 3705 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
3706 | |
165
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3707 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 | 3708 |
938 | 3709 // Number of non-static oop map blocks allocated at end of klass. |
939
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|
3710 const unsigned int total_oop_map_count = |
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|
3711 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
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|
3712 first_nonstatic_oop_offset); |
0 | 3713 |
3714 // Compute reference type | |
3715 ReferenceType rt; | |
3716 if (super_klass() == NULL) { | |
3717 rt = REF_NONE; | |
3718 } else { | |
3719 rt = super_klass->reference_type(); | |
3720 } | |
3721 | |
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3722 // We can now create the basic Klass* for this klass |
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3723 int total_oop_map_size2 = |
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3724 InstanceKlass::nonstatic_oop_map_size(total_oop_map_count); |
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3725 |
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3726 Klass* ik = InstanceKlass::allocate_instance_klass(loader_data, |
6831
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|
3727 vtable_size, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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diff
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|
3728 itable_size, |
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
changeset
|
3729 static_field_size, |
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|
3730 total_oop_map_size2, |
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|
3731 rt, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
changeset
|
3732 access_flags, |
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
changeset
|
3733 name, |
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|
3734 super_klass(), |
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diff
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|
3735 host_klass, |
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|
3736 CHECK_(nullHandle)); |
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3737 |
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3738 // Add all classes to our internal class loader list here, |
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3739 // including classes in the bootstrap (NULL) class loader. |
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3740 loader_data->add_class(ik); |
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3741 |
0 | 3742 instanceKlassHandle this_klass (THREAD, ik); |
3743 | |
938 | 3744 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
3745 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
3746 "sanity"); | |
0 | 3747 |
3748 // Fill in information already parsed | |
975 | 3749 this_klass->set_should_verify_class(verify); |
0 | 3750 jint lh = Klass::instance_layout_helper(instance_size, false); |
3751 this_klass->set_layout_helper(lh); | |
3752 assert(this_klass->oop_is_instance(), "layout is correct"); | |
3753 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
3754 // Not yet: supers are done below to support the new subtype-checking fields | |
3755 //this_klass->set_super(super_klass()); | |
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3756 this_klass->set_class_loader_data(loader_data); |
0 | 3757 this_klass->set_nonstatic_field_size(nonstatic_field_size); |
975 | 3758 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
3938 | 3759 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
0 | 3760 cp->set_pool_holder(this_klass()); |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3761 error_handler.set_in_error(false); // turn off error handler for cp |
0 | 3762 this_klass->set_constants(cp()); |
6725
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3763 this_klass->set_local_interfaces(local_interfaces); |
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3764 this_klass->set_fields(fields, java_fields_count); |
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3765 this_klass->set_methods(methods); |
0 | 3766 if (has_final_method) { |
3767 this_klass->set_has_final_method(); | |
3768 } | |
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3769 this_klass->set_method_ordering(method_ordering); |
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3770 // The InstanceKlass::_methods_jmethod_ids cache and the |
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|
3771 // InstanceKlass::_methods_cached_itable_indices cache are |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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parents:
975
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|
3772 // both managed on the assumption that the initial cache |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
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diff
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|
3773 // size is equal to the number of methods in the class. If |
6725
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3774 // that changes, then InstanceKlass::idnum_can_increment() |
977
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|
3775 // has to be changed accordingly. |
0 | 3776 this_klass->set_initial_method_idnum(methods->length()); |
3777 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
6852 | 3778 if (is_anonymous()) // I am well known to myself |
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
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changeset
|
3779 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
6725
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3780 |
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|
3781 // Allocate an annotation type if needed. |
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3782 if (fields_annotations != NULL || |
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3783 methods_annotations != NULL || |
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|
3784 methods_parameter_annotations != NULL || |
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|
3785 methods_default_annotations != NULL || |
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|
3786 fields_type_annotations != NULL || |
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|
3787 methods_type_annotations != NULL) { |
6725
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|
3788 Annotations* anno = Annotations::allocate(loader_data, |
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|
3789 fields_annotations, methods_annotations, |
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|
3790 methods_parameter_annotations, |
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|
3791 methods_default_annotations, CHECK_(nullHandle)); |
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|
3792 this_klass->set_annotations(anno); |
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|
3793 } else { |
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|
3794 this_klass->set_annotations(NULL); |
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|
3795 } |
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|
3796 |
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|
3797 if (fields_type_annotations != NULL || |
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|
3798 methods_type_annotations != NULL) { |
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|
3799 assert(this_klass->annotations() != NULL, "annotations should have been allocated"); |
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|
3800 Annotations* anno = Annotations::allocate(loader_data, |
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|
3801 fields_type_annotations, |
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|
3802 methods_type_annotations, |
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|
3803 NULL, |
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|
3804 NULL, CHECK_(nullHandle)); |
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|
3805 this_klass->annotations()->set_type_annotations(anno); |
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|
3806 } |
0 | 3807 |
3808 this_klass->set_minor_version(minor_version); | |
3809 this_klass->set_major_version(major_version); | |
6934 | 3810 this_klass->set_has_default_methods(has_default_methods); |
0 | 3811 |
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3812 // Set up Method*::intrinsic_id as soon as we know the names of methods. |
856
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|
3813 // (We used to do this lazily, but now we query it in Rewriter, |
75596850f863
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|
3814 // which is eagerly done for every method, so we might as well do it now, |
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|
3815 // when everything is fresh in memory.) |
6725
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|
3816 if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
856
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|
3817 for (int j = 0; j < methods->length(); j++) { |
6725
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|
3818 methods->at(j)->init_intrinsic_id(); |
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|
3819 } |
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|
3820 } |
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|
3821 |
0 | 3822 if (cached_class_file_bytes != NULL) { |
6725
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|
3823 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
0 | 3824 this_klass->set_cached_class_file(cached_class_file_bytes, |
3825 cached_class_file_length); | |
3826 } | |
3827 | |
6934 | 3828 // Fill in field values obtained by parse_classfile_attributes |
3829 if (parsed_annotations.has_any_annotations()) | |
3830 parsed_annotations.apply_to(this_klass); | |
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|
3831 |
6934 | 3832 // Create annotations |
3833 if (_annotations != NULL && this_klass->annotations() == NULL) { | |
3834 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); | |
3835 this_klass->set_annotations(anno); | |
3836 } | |
3837 apply_parsed_class_attributes(this_klass); | |
3838 | |
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|
3839 // Create type annotations |
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|
3840 if (_type_annotations != NULL) { |
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|
3841 if (this_klass->annotations() == NULL) { |
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3842 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
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|
3843 this_klass->set_annotations(anno); |
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|
3844 } |
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3845 if (this_klass->annotations()->type_annotations() == NULL) { |
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3846 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
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|
3847 this_klass->annotations()->set_type_annotations(anno); |
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|
3848 } |
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3849 this_klass->annotations()->type_annotations()->set_class_annotations(_type_annotations); |
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|
3850 } |
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3851 |
0 | 3852 // Miranda methods |
3853 if ((num_miranda_methods > 0) || | |
3854 // if this class introduced new miranda methods or | |
3855 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
3856 // super class exists and this class inherited miranda methods | |
3857 ) { | |
3858 this_klass->set_has_miranda_methods(); // then set a flag | |
3859 } | |
3860 | |
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|
3861 this_klass->set_transitive_interfaces(transitive_interfaces); |
0 | 3862 |
3863 // Fill in information needed to compute superclasses. | |
3864 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
3865 | |
3866 // Initialize itable offset tables | |
3867 klassItable::setup_itable_offset_table(this_klass); | |
3868 | |
6934 | 3869 // Compute transitive closure of interfaces this class implements |
0 | 3870 // Do final class setup |
938 | 3871 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
0 | 3872 |
6222
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diff
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|
3873 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
0 | 3874 set_precomputed_flags(this_klass); |
3875 | |
3876 // reinitialize modifiers, using the InnerClasses attribute | |
3877 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
3878 this_klass->set_modifier_flags(computed_modifiers); | |
3879 | |
3880 // check if this class can access its super class | |
3881 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
3882 | |
3883 // check if this class can access its superinterfaces | |
3884 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
3885 | |
3886 // check if this class overrides any final method | |
3887 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
3888 | |
3889 // check that if this class is an interface then it doesn't have static methods | |
3890 if (this_klass->is_interface()) { | |
3891 check_illegal_static_method(this_klass, CHECK_(nullHandle)); | |
3892 } | |
3893 | |
6934 | 3894 |
3895 #ifdef ASSERT | |
3896 if (ParseAllGenericSignatures) { | |
3897 parseAndPrintGenericSignatures(this_klass, CHECK_(nullHandle)); | |
3898 } | |
3899 #endif | |
3900 | |
3901 // Generate any default methods - default methods are interface methods | |
3902 // that have a default implementation. This is new with Lambda project. | |
3903 if (has_default_methods && !access_flags.is_interface() && | |
3904 local_interfaces->length() > 0) { | |
3905 DefaultMethods::generate_default_methods( | |
3906 this_klass(), &all_mirandas, CHECK_(nullHandle)); | |
3907 } | |
3908 | |
2376
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2357
diff
changeset
|
3909 // Allocate mirror and initialize static fields |
c7f3d0b4570f
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2357
diff
changeset
|
3910 java_lang_Class::create_mirror(this_klass, CHECK_(nullHandle)); |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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2357
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|
3911 |
6725
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3912 // Allocate a simple java object for locking during class initialization. |
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3913 // This needs to be a java object because it can be held across a java call. |
da91efe96a93
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3914 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_NULL); |
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3915 this_klass->set_init_lock(r); |
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|
3916 |
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|
3917 // TODO: Move these oops to the mirror |
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3918 this_klass->set_protection_domain(protection_domain()); |
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|
3919 |
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|
3920 // Update the loader_data graph. |
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3921 record_defined_class_dependencies(this_klass, CHECK_NULL); |
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|
3922 |
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|
3923 ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
0 | 3924 false /* not shared class */); |
3925 | |
3926 if (TraceClassLoading) { | |
6934 | 3927 ResourceMark rm; |
0 | 3928 // print in a single call to reduce interleaving of output |
3929 if (cfs->source() != NULL) { | |
3930 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
3931 cfs->source()); | |
3932 } else if (class_loader.is_null()) { | |
3933 if (THREAD->is_Java_thread()) { | |
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3934 Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
0 | 3935 tty->print("[Loaded %s by instance of %s]\n", |
3936 this_klass->external_name(), | |
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|
3937 InstanceKlass::cast(caller)->external_name()); |
0 | 3938 } else { |
3939 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
3940 } | |
3941 } else { | |
3942 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
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3943 InstanceKlass::cast(class_loader->klass())->external_name()); |
0 | 3944 } |
3945 } | |
3946 | |
3947 if (TraceClassResolution) { | |
6934 | 3948 ResourceMark rm; |
0 | 3949 // print out the superclass. |
6983 | 3950 const char * from = this_klass()->external_name(); |
0 | 3951 if (this_klass->java_super() != NULL) { |
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3952 tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
0 | 3953 } |
3954 // print out each of the interface classes referred to by this class. | |
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3955 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
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3956 if (local_interfaces != NULL) { |
0 | 3957 int length = local_interfaces->length(); |
3958 for (int i = 0; i < length; i++) { | |
6725
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3959 Klass* k = local_interfaces->at(i); |
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3960 InstanceKlass* to_class = InstanceKlass::cast(k); |
0 | 3961 const char * to = to_class->external_name(); |
657
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6603316: Improve instrumentation for classes loaded at startup
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diff
changeset
|
3962 tty->print("RESOLVE %s %s (interface)\n", from, to); |
0 | 3963 } |
3964 } | |
3965 } | |
3966 | |
3967 #ifndef PRODUCT | |
3968 if( PrintCompactFieldsSavings ) { | |
6934 | 3969 ResourceMark rm; |
0 | 3970 if( nonstatic_field_size < orig_nonstatic_field_size ) { |
165
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3971 tty->print("[Saved %d of %d bytes in %s]\n", |
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|
3972 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
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diff
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|
3973 orig_nonstatic_field_size*heapOopSize, |
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|
3974 this_klass->external_name()); |
0 | 3975 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
165
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diff
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|
3976 tty->print("[Wasted %d over %d bytes in %s]\n", |
437d03ea40b1
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kvn
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diff
changeset
|
3977 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
437d03ea40b1
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diff
changeset
|
3978 orig_nonstatic_field_size*heapOopSize, |
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diff
changeset
|
3979 this_klass->external_name()); |
0 | 3980 } |
3981 } | |
3982 #endif | |
3983 | |
3984 // preserve result across HandleMark | |
3985 preserve_this_klass = this_klass(); | |
3986 } | |
3987 | |
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3988 // Create new handle outside HandleMark (might be needed for |
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3989 // Extended Class Redefinition) |
0 | 3990 instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
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3991 debug_only(this_klass->verify();) |
0 | 3992 |
3993 return this_klass; | |
3994 } | |
3995 | |
939
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|
3996 unsigned int |
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3997 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
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3998 unsigned int nonstatic_oop_map_count, |
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|
3999 int first_nonstatic_oop_offset) { |
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|
4000 unsigned int map_count = |
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|
4001 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
0 | 4002 if (nonstatic_oop_map_count > 0) { |
4003 // We have oops to add to map | |
938 | 4004 if (map_count == 0) { |
4005 map_count = nonstatic_oop_map_count; | |
0 | 4006 } else { |
938 | 4007 // Check whether we should add a new map block or whether the last one can |
4008 // be extended | |
4009 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
4010 OopMapBlock* const last_map = first_map + map_count - 1; | |
4011 | |
4012 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
0 | 4013 if (next_offset == first_nonstatic_oop_offset) { |
4014 // There is no gap bettwen superklass's last oop field and first | |
4015 // local oop field, merge maps. | |
4016 nonstatic_oop_map_count -= 1; | |
4017 } else { | |
4018 // Superklass didn't end with a oop field, add extra maps | |
938 | 4019 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
0 | 4020 } |
938 | 4021 map_count += nonstatic_oop_map_count; |
0 | 4022 } |
4023 } | |
938 | 4024 return map_count; |
0 | 4025 } |
4026 | |
4027 | |
4028 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
939
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938
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|
4029 unsigned int nonstatic_oop_map_count, |
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jcoomes
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diff
changeset
|
4030 int* nonstatic_oop_offsets, |
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|
4031 unsigned int* nonstatic_oop_counts) { |
0 | 4032 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
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4033 const InstanceKlass* const super = k->superklass(); |
939
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4034 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
938 | 4035 if (super_count > 0) { |
4036 // Copy maps from superklass | |
0 | 4037 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
939
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|
4038 for (unsigned int i = 0; i < super_count; ++i) { |
0 | 4039 *this_oop_map++ = *super_oop_map++; |
4040 } | |
4041 } | |
938 | 4042 |
0 | 4043 if (nonstatic_oop_map_count > 0) { |
938 | 4044 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
4045 // The counts differ because there is no gap between superklass's last oop | |
4046 // field and the first local oop field. Extend the last oop map copied | |
0 | 4047 // from the superklass instead of creating new one. |
4048 nonstatic_oop_map_count--; | |
4049 nonstatic_oop_offsets++; | |
4050 this_oop_map--; | |
938 | 4051 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
0 | 4052 this_oop_map++; |
4053 } | |
938 | 4054 |
0 | 4055 // Add new map blocks, fill them |
4056 while (nonstatic_oop_map_count-- > 0) { | |
4057 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
938 | 4058 this_oop_map->set_count(*nonstatic_oop_counts++); |
0 | 4059 this_oop_map++; |
4060 } | |
938 | 4061 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
4062 this_oop_map, "sanity"); | |
0 | 4063 } |
4064 } | |
4065 | |
4066 | |
4067 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
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4068 Klass* super = k->super(); |
0 | 4069 |
4070 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
4071 // in which case we don't have to register objects as finalizable | |
4072 if (!_has_empty_finalizer) { | |
4073 if (_has_finalizer || | |
6725
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4074 (super != NULL && super->has_finalizer())) { |
0 | 4075 k->set_has_finalizer(); |
4076 } | |
4077 } | |
4078 | |
4079 #ifdef ASSERT | |
4080 bool f = false; | |
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4081 Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
0 | 4082 vmSymbols::void_method_signature()); |
4083 if (m != NULL && !m->is_empty_method()) { | |
4084 f = true; | |
4085 } | |
4086 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
4087 #endif | |
4088 | |
4089 // Check if this klass supports the java.lang.Cloneable interface | |
1142 | 4090 if (SystemDictionary::Cloneable_klass_loaded()) { |
4091 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
0 | 4092 k->set_is_cloneable(); |
4093 } | |
4094 } | |
4095 | |
4096 // Check if this klass has a vanilla default constructor | |
4097 if (super == NULL) { | |
4098 // java.lang.Object has empty default constructor | |
4099 k->set_has_vanilla_constructor(); | |
4100 } else { | |
6983 | 4101 if (super->has_vanilla_constructor() && |
0 | 4102 _has_vanilla_constructor) { |
4103 k->set_has_vanilla_constructor(); | |
4104 } | |
4105 #ifdef ASSERT | |
4106 bool v = false; | |
6983 | 4107 if (super->has_vanilla_constructor()) { |
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4108 Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
0 | 4109 ), vmSymbols::void_method_signature()); |
4110 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
4111 v = true; | |
4112 } | |
4113 } | |
4114 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
4115 #endif | |
4116 } | |
4117 | |
4118 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
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4119 // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
0 | 4120 assert(k->size_helper() > 0, "layout_helper is initialized"); |
4121 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
4122 || k->is_abstract() || k->is_interface() | |
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|
4123 || (k->name() == vmSymbols::java_lang_Class() && k->class_loader() == NULL) |
0 | 4124 || k->size_helper() >= FastAllocateSizeLimit) { |
4125 // Forbid fast-path allocation. | |
4126 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
4127 k->set_layout_helper(lh); | |
4128 } | |
4129 } | |
4130 | |
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4131 // Attach super classes and interface classes to class loader data |
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4132 void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
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4133 ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
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4134 if (defining_loader_data->is_the_null_class_loader_data()) { |
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4135 // Dependencies to null class loader data are implicit. |
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|
4136 return; |
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|
4137 } else { |
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|
4138 // add super class dependency |
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4139 Klass* super = defined_klass->super(); |
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4140 if (super != NULL) { |
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|
4141 defining_loader_data->record_dependency(super, CHECK); |
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|
4142 } |
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4143 |
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|
4144 // add super interface dependencies |
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|
4145 Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
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4146 if (local_interfaces != NULL) { |
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4147 int length = local_interfaces->length(); |
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4148 for (int i = 0; i < length; i++) { |
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4149 defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
0 | 4150 } |
4151 } | |
4152 } | |
4153 } | |
4154 | |
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4155 // utility method for appending and array with check for duplicates |
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4156 |
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4157 void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
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4158 // iterate over new interfaces |
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4159 for (int i = 0; i < ifs->length(); i++) { |
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4160 Klass* e = ifs->at(i); |
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4161 assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
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4162 // add new interface |
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4163 result->append_if_missing(e); |
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4164 } |
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4165 } |
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4166 |
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4167 |
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4168 Array<Klass*>* ClassFileParser::compute_transitive_interfaces(ClassLoaderData* loader_data, instanceKlassHandle super, Array<Klass*>* local_ifs, TRAPS) { |
0 | 4169 // Compute maximum size for transitive interfaces |
4170 int max_transitive_size = 0; | |
4171 int super_size = 0; | |
4172 // Add superclass transitive interfaces size | |
4173 if (super.not_null()) { | |
4174 super_size = super->transitive_interfaces()->length(); | |
4175 max_transitive_size += super_size; | |
4176 } | |
4177 // Add local interfaces' super interfaces | |
4178 int local_size = local_ifs->length(); | |
4179 for (int i = 0; i < local_size; i++) { | |
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4180 Klass* l = local_ifs->at(i); |
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4181 max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
0 | 4182 } |
4183 // Finally add local interfaces | |
4184 max_transitive_size += local_size; | |
4185 // Construct array | |
4186 if (max_transitive_size == 0) { | |
4187 // no interfaces, use canonicalized array | |
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4188 return Universe::the_empty_klass_array(); |
0 | 4189 } else if (max_transitive_size == super_size) { |
4190 // no new local interfaces added, share superklass' transitive interface array | |
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4191 return super->transitive_interfaces(); |
0 | 4192 } else if (max_transitive_size == local_size) { |
4193 // only local interfaces added, share local interface array | |
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4194 return local_ifs; |
0 | 4195 } else { |
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4196 ResourceMark rm; |
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4197 GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
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4198 |
0 | 4199 // Copy down from superclass |
4200 if (super.not_null()) { | |
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4201 append_interfaces(result, super->transitive_interfaces()); |
0 | 4202 } |
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4203 |
0 | 4204 // Copy down from local interfaces' superinterfaces |
4205 for (int i = 0; i < local_ifs->length(); i++) { | |
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4206 Klass* l = local_ifs->at(i); |
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4207 append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
0 | 4208 } |
4209 // Finally add local interfaces | |
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4210 append_interfaces(result, local_ifs); |
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4211 |
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4212 // length will be less than the max_transitive_size if duplicates were removed |
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4213 int length = result->length(); |
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4214 assert(length <= max_transitive_size, "just checking"); |
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4215 Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(loader_data, length, CHECK_NULL); |
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4216 for (int i = 0; i < length; i++) { |
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4217 Klass* e = result->at(i); |
0 | 4218 assert(e != NULL, "just checking"); |
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4219 new_result->at_put(i, e); |
0 | 4220 } |
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4221 return new_result; |
0 | 4222 } |
4223 } | |
4224 | |
4225 | |
4226 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
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4227 Klass* super = this_klass->super(); |
0 | 4228 if ((super != NULL) && |
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4229 (!Reflection::verify_class_access(this_klass(), super, false))) { |
0 | 4230 ResourceMark rm(THREAD); |
4231 Exceptions::fthrow( | |
4232 THREAD_AND_LOCATION, | |
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4233 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4234 "class %s cannot access its superclass %s", |
4235 this_klass->external_name(), | |
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4236 InstanceKlass::cast(super)->external_name() |
0 | 4237 ); |
4238 return; | |
4239 } | |
4240 } | |
4241 | |
4242 | |
4243 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
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4244 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
0 | 4245 int lng = local_interfaces->length(); |
4246 for (int i = lng - 1; i >= 0; i--) { | |
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4247 Klass* k = local_interfaces->at(i); |
6983 | 4248 assert (k != NULL && k->is_interface(), "invalid interface"); |
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4249 if (!Reflection::verify_class_access(this_klass(), k, false)) { |
0 | 4250 ResourceMark rm(THREAD); |
4251 Exceptions::fthrow( | |
4252 THREAD_AND_LOCATION, | |
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4253 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4254 "class %s cannot access its superinterface %s", |
4255 this_klass->external_name(), | |
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4256 InstanceKlass::cast(k)->external_name() |
0 | 4257 ); |
4258 return; | |
4259 } | |
4260 } | |
4261 } | |
4262 | |
4263 | |
4264 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
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4265 Array<Method*>* methods = this_klass->methods(); |
0 | 4266 int num_methods = methods->length(); |
4267 | |
4268 // go thru each method and check if it overrides a final method | |
4269 for (int index = 0; index < num_methods; index++) { | |
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4270 Method* m = methods->at(index); |
0 | 4271 |
4272 // skip private, static and <init> methods | |
4273 if ((!m->is_private()) && | |
4274 (!m->is_static()) && | |
4275 (m->name() != vmSymbols::object_initializer_name())) { | |
4276 | |
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4277 Symbol* name = m->name(); |
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4278 Symbol* signature = m->signature(); |
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4279 Klass* k = this_klass->super(); |
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4280 Method* super_m = NULL; |
0 | 4281 while (k != NULL) { |
4282 // skip supers that don't have final methods. | |
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4283 if (k->has_final_method()) { |
0 | 4284 // lookup a matching method in the super class hierarchy |
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4285 super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
0 | 4286 if (super_m == NULL) { |
4287 break; // didn't find any match; get out | |
4288 } | |
4289 | |
4290 if (super_m->is_final() && | |
4291 // matching method in super is final | |
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4292 (Reflection::verify_field_access(this_klass(), |
0 | 4293 super_m->method_holder(), |
4294 super_m->method_holder(), | |
4295 super_m->access_flags(), false)) | |
4296 // this class can access super final method and therefore override | |
4297 ) { | |
4298 ResourceMark rm(THREAD); | |
4299 Exceptions::fthrow( | |
4300 THREAD_AND_LOCATION, | |
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4301 vmSymbols::java_lang_VerifyError(), |
0 | 4302 "class %s overrides final method %s.%s", |
4303 this_klass->external_name(), | |
4304 name->as_C_string(), | |
4305 signature->as_C_string() | |
4306 ); | |
4307 return; | |
4308 } | |
4309 | |
4310 // continue to look from super_m's holder's super. | |
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4311 k = super_m->method_holder()->super(); |
0 | 4312 continue; |
4313 } | |
4314 | |
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4315 k = k->super(); |
0 | 4316 } |
4317 } | |
4318 } | |
4319 } | |
4320 | |
4321 | |
4322 // assumes that this_klass is an interface | |
4323 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
4324 assert(this_klass->is_interface(), "not an interface"); | |
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4325 Array<Method*>* methods = this_klass->methods(); |
0 | 4326 int num_methods = methods->length(); |
4327 | |
4328 for (int index = 0; index < num_methods; index++) { | |
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4329 Method* m = methods->at(index); |
0 | 4330 // if m is static and not the init method, throw a verify error |
4331 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
4332 ResourceMark rm(THREAD); | |
4333 Exceptions::fthrow( | |
4334 THREAD_AND_LOCATION, | |
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4335 vmSymbols::java_lang_VerifyError(), |
0 | 4336 "Illegal static method %s in interface %s", |
4337 m->name()->as_C_string(), | |
4338 this_klass->external_name() | |
4339 ); | |
4340 return; | |
4341 } | |
4342 } | |
4343 } | |
4344 | |
4345 // utility methods for format checking | |
4346 | |
4347 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
4348 if (!_need_verify) { return; } | |
4349 | |
4350 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
4351 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4352 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4353 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
4354 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4355 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
4356 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4357 | |
4358 if ((is_abstract && is_final) || | |
4359 (is_interface && !is_abstract) || | |
4360 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
4361 (!is_interface && major_gte_15 && is_annotation)) { | |
4362 ResourceMark rm(THREAD); | |
4363 Exceptions::fthrow( | |
4364 THREAD_AND_LOCATION, | |
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4365 vmSymbols::java_lang_ClassFormatError(), |
0 | 4366 "Illegal class modifiers in class %s: 0x%X", |
4367 _class_name->as_C_string(), flags | |
4368 ); | |
4369 return; | |
4370 } | |
4371 } | |
4372 | |
4373 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
4374 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4375 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4376 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4377 | |
4378 return ((is_public && is_protected) || | |
4379 (is_public && is_private) || | |
4380 (is_protected && is_private)); | |
4381 } | |
4382 | |
4383 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
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|
4384 u2 max_version = |
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4385 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
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|
4386 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
0 | 4387 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
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4388 (major <= max_version) && |
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4389 ((major != max_version) || |
0 | 4390 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
4391 } | |
4392 | |
4393 void ClassFileParser::verify_legal_field_modifiers( | |
4394 jint flags, bool is_interface, TRAPS) { | |
4395 if (!_need_verify) { return; } | |
4396 | |
4397 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4398 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4399 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4400 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4401 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4402 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
4403 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
4404 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4405 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4406 | |
4407 bool is_illegal = false; | |
4408 | |
4409 if (is_interface) { | |
4410 if (!is_public || !is_static || !is_final || is_private || | |
4411 is_protected || is_volatile || is_transient || | |
4412 (major_gte_15 && is_enum)) { | |
4413 is_illegal = true; | |
4414 } | |
4415 } else { // not interface | |
4416 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
4417 is_illegal = true; | |
4418 } | |
4419 } | |
4420 | |
4421 if (is_illegal) { | |
4422 ResourceMark rm(THREAD); | |
4423 Exceptions::fthrow( | |
4424 THREAD_AND_LOCATION, | |
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4425 vmSymbols::java_lang_ClassFormatError(), |
0 | 4426 "Illegal field modifiers in class %s: 0x%X", |
4427 _class_name->as_C_string(), flags); | |
4428 return; | |
4429 } | |
4430 } | |
4431 | |
4432 void ClassFileParser::verify_legal_method_modifiers( | |
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4433 jint flags, bool is_interface, Symbol* name, TRAPS) { |
0 | 4434 if (!_need_verify) { return; } |
4435 | |
4436 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4437 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4438 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4439 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4440 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
4441 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4442 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
4443 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
4444 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
4445 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
6934 | 4446 const bool major_gte_8 = _major_version >= JAVA_8_VERSION; |
0 | 4447 const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
4448 | |
4449 bool is_illegal = false; | |
4450 | |
4451 if (is_interface) { | |
6934 | 4452 if (!is_public || is_static || is_final || is_native || |
4453 ((is_synchronized || is_strict) && major_gte_15 && | |
4454 (!major_gte_8 || is_abstract)) || | |
4455 (!major_gte_8 && !is_abstract)) { | |
0 | 4456 is_illegal = true; |
4457 } | |
4458 } else { // not interface | |
4459 if (is_initializer) { | |
4460 if (is_static || is_final || is_synchronized || is_native || | |
4461 is_abstract || (major_gte_15 && is_bridge)) { | |
4462 is_illegal = true; | |
4463 } | |
4464 } else { // not initializer | |
4465 if (is_abstract) { | |
4466 if ((is_final || is_native || is_private || is_static || | |
4467 (major_gte_15 && (is_synchronized || is_strict)))) { | |
4468 is_illegal = true; | |
4469 } | |
4470 } | |
4471 if (has_illegal_visibility(flags)) { | |
4472 is_illegal = true; | |
4473 } | |
4474 } | |
4475 } | |
4476 | |
4477 if (is_illegal) { | |
4478 ResourceMark rm(THREAD); | |
4479 Exceptions::fthrow( | |
4480 THREAD_AND_LOCATION, | |
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4481 vmSymbols::java_lang_ClassFormatError(), |
0 | 4482 "Method %s in class %s has illegal modifiers: 0x%X", |
4483 name->as_C_string(), _class_name->as_C_string(), flags); | |
4484 return; | |
4485 } | |
4486 } | |
4487 | |
4488 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
4489 assert(_need_verify, "only called when _need_verify is true"); | |
4490 int i = 0; | |
4491 int count = length >> 2; | |
4492 for (int k=0; k<count; k++) { | |
4493 unsigned char b0 = buffer[i]; | |
4494 unsigned char b1 = buffer[i+1]; | |
4495 unsigned char b2 = buffer[i+2]; | |
4496 unsigned char b3 = buffer[i+3]; | |
4497 // For an unsigned char v, | |
4498 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
4499 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
4500 unsigned char res = b0 | b0 - 1 | | |
4501 b1 | b1 - 1 | | |
4502 b2 | b2 - 1 | | |
4503 b3 | b3 - 1; | |
4504 if (res >= 128) break; | |
4505 i += 4; | |
4506 } | |
4507 for(; i < length; i++) { | |
4508 unsigned short c; | |
4509 // no embedded zeros | |
4510 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4511 if(buffer[i] < 128) { | |
4512 continue; | |
4513 } | |
4514 if ((i + 5) < length) { // see if it's legal supplementary character | |
4515 if (UTF8::is_supplementary_character(&buffer[i])) { | |
4516 c = UTF8::get_supplementary_character(&buffer[i]); | |
4517 i += 5; | |
4518 continue; | |
4519 } | |
4520 } | |
4521 switch (buffer[i] >> 4) { | |
4522 default: break; | |
4523 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
4524 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4525 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
4526 c = (buffer[i] & 0x1F) << 6; | |
4527 i++; | |
4528 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
4529 c += buffer[i] & 0x3F; | |
4530 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
4531 // for classes with major > 47, c must a null or a character in its shortest form | |
4532 break; | |
4533 } | |
4534 } | |
4535 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4536 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
4537 c = (buffer[i] & 0xF) << 12; | |
4538 i += 2; | |
4539 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
4540 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
4541 if (_major_version <= 47 || c >= 0x800) { | |
4542 // for classes with major > 47, c must be in its shortest form | |
4543 break; | |
4544 } | |
4545 } | |
4546 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4547 } // end of switch | |
4548 } // end of for | |
4549 } | |
4550 | |
4551 // Checks if name is a legal class name. | |
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4552 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
0 | 4553 if (!_need_verify || _relax_verify) { return; } |
4554 | |
4555 char buf[fixed_buffer_size]; | |
4556 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4557 unsigned int length = name->utf8_length(); | |
4558 bool legal = false; | |
4559 | |
4560 if (length > 0) { | |
4561 char* p; | |
4562 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
4563 p = skip_over_field_signature(bytes, false, length, CHECK); | |
4564 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4565 } else if (_major_version < JAVA_1_5_VERSION) { | |
4566 if (bytes[0] != '<') { | |
4567 p = skip_over_field_name(bytes, true, length); | |
4568 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4569 } | |
4570 } else { | |
4571 // 4900761: relax the constraints based on JSR202 spec | |
4572 // Class names may be drawn from the entire Unicode character set. | |
4573 // Identifiers between '/' must be unqualified names. | |
4574 // The utf8 string has been verified when parsing cpool entries. | |
4575 legal = verify_unqualified_name(bytes, length, LegalClass); | |
4576 } | |
4577 } | |
4578 if (!legal) { | |
4579 ResourceMark rm(THREAD); | |
4580 Exceptions::fthrow( | |
4581 THREAD_AND_LOCATION, | |
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4582 vmSymbols::java_lang_ClassFormatError(), |
0 | 4583 "Illegal class name \"%s\" in class file %s", bytes, |
4584 _class_name->as_C_string() | |
4585 ); | |
4586 return; | |
4587 } | |
4588 } | |
4589 | |
4590 // Checks if name is a legal field name. | |
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4591 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
0 | 4592 if (!_need_verify || _relax_verify) { return; } |
4593 | |
4594 char buf[fixed_buffer_size]; | |
4595 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4596 unsigned int length = name->utf8_length(); | |
4597 bool legal = false; | |
4598 | |
4599 if (length > 0) { | |
4600 if (_major_version < JAVA_1_5_VERSION) { | |
4601 if (bytes[0] != '<') { | |
4602 char* p = skip_over_field_name(bytes, false, length); | |
4603 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4604 } | |
4605 } else { | |
4606 // 4881221: relax the constraints based on JSR202 spec | |
4607 legal = verify_unqualified_name(bytes, length, LegalField); | |
4608 } | |
4609 } | |
4610 | |
4611 if (!legal) { | |
4612 ResourceMark rm(THREAD); | |
4613 Exceptions::fthrow( | |
4614 THREAD_AND_LOCATION, | |
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4615 vmSymbols::java_lang_ClassFormatError(), |
0 | 4616 "Illegal field name \"%s\" in class %s", bytes, |
4617 _class_name->as_C_string() | |
4618 ); | |
4619 return; | |
4620 } | |
4621 } | |
4622 | |
4623 // Checks if name is a legal method name. | |
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4624 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
0 | 4625 if (!_need_verify || _relax_verify) { return; } |
4626 | |
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4627 assert(name != NULL, "method name is null"); |
0 | 4628 char buf[fixed_buffer_size]; |
4629 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4630 unsigned int length = name->utf8_length(); | |
4631 bool legal = false; | |
4632 | |
4633 if (length > 0) { | |
4634 if (bytes[0] == '<') { | |
4635 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
4636 legal = true; | |
4637 } | |
4638 } else if (_major_version < JAVA_1_5_VERSION) { | |
4639 char* p; | |
4640 p = skip_over_field_name(bytes, false, length); | |
4641 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4642 } else { | |
4643 // 4881221: relax the constraints based on JSR202 spec | |
4644 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
4645 } | |
4646 } | |
4647 | |
4648 if (!legal) { | |
4649 ResourceMark rm(THREAD); | |
4650 Exceptions::fthrow( | |
4651 THREAD_AND_LOCATION, | |
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4652 vmSymbols::java_lang_ClassFormatError(), |
0 | 4653 "Illegal method name \"%s\" in class %s", bytes, |
4654 _class_name->as_C_string() | |
4655 ); | |
4656 return; | |
4657 } | |
4658 } | |
4659 | |
4660 | |
4661 // Checks if signature is a legal field signature. | |
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4662 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4663 if (!_need_verify) { return; } |
4664 | |
4665 char buf[fixed_buffer_size]; | |
4666 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4667 unsigned int length = signature->utf8_length(); | |
4668 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
4669 | |
4670 if (p == NULL || (p - bytes) != (int)length) { | |
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4671 throwIllegalSignature("Field", name, signature, CHECK); |
0 | 4672 } |
4673 } | |
4674 | |
4675 // Checks if signature is a legal method signature. | |
4676 // Returns number of parameters | |
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4677 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 4678 if (!_need_verify) { |
4679 // make sure caller's args_size will be less than 0 even for non-static | |
4680 // method so it will be recomputed in compute_size_of_parameters(). | |
4681 return -2; | |
4682 } | |
4683 | |
4684 unsigned int args_size = 0; | |
4685 char buf[fixed_buffer_size]; | |
4686 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4687 unsigned int length = signature->utf8_length(); | |
4688 char* nextp; | |
4689 | |
4690 // The first character must be a '(' | |
4691 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
4692 length--; | |
4693 // Skip over legal field signatures | |
4694 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4695 while ((length > 0) && (nextp != NULL)) { | |
4696 args_size++; | |
4697 if (p[0] == 'J' || p[0] == 'D') { | |
4698 args_size++; | |
4699 } | |
4700 length -= nextp - p; | |
4701 p = nextp; | |
4702 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4703 } | |
4704 // The first non-signature thing better be a ')' | |
4705 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
4706 length--; | |
4707 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
4708 // All internal methods must return void | |
4709 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
4710 return args_size; | |
4711 } | |
4712 } else { | |
4713 // Now we better just have a return value | |
4714 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
4715 if (nextp && ((int)length == (nextp - p))) { | |
4716 return args_size; | |
4717 } | |
4718 } | |
4719 } | |
4720 } | |
4721 // Report error | |
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4722 throwIllegalSignature("Method", name, signature, CHECK_0); |
0 | 4723 return 0; |
4724 } | |
4725 | |
4726 | |
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4727 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
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4728 // Method names also may not contain the characters '<' or '>', unless <init> |
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4729 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
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4730 // method. Because these names have been checked as special cases before |
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4731 // calling this method in verify_legal_method_name. |
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4732 bool ClassFileParser::verify_unqualified_name( |
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4733 char* name, unsigned int length, int type) { |
0 | 4734 jchar ch; |
4735 | |
4736 for (char* p = name; p != name + length; ) { | |
4737 ch = *p; | |
4738 if (ch < 128) { | |
4739 p++; | |
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4740 if (ch == '.' || ch == ';' || ch == '[' ) { |
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4741 return false; // do not permit '.', ';', or '[' |
0 | 4742 } |
4743 if (type != LegalClass && ch == '/') { | |
4744 return false; // do not permit '/' unless it's class name | |
4745 } | |
4746 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
4747 return false; // do not permit '<' or '>' in method names | |
4748 } | |
4749 } else { | |
4750 char* tmp_p = UTF8::next(p, &ch); | |
4751 p = tmp_p; | |
4752 } | |
4753 } | |
4754 return true; | |
4755 } | |
4756 | |
4757 | |
4758 // Take pointer to a string. Skip over the longest part of the string that could | |
4759 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
4760 // Return a pointer to just past the fieldname. | |
4761 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
4762 // being true, we saw consecutive slashes (meaning we were looking for a | |
4763 // qualified path but found something that was badly-formed). | |
4764 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
4765 char* p; | |
4766 jchar ch; | |
4767 jboolean last_is_slash = false; | |
4768 jboolean not_first_ch = false; | |
4769 | |
4770 for (p = name; p != name + length; not_first_ch = true) { | |
4771 char* old_p = p; | |
4772 ch = *p; | |
4773 if (ch < 128) { | |
4774 p++; | |
4775 // quick check for ascii | |
4776 if ((ch >= 'a' && ch <= 'z') || | |
4777 (ch >= 'A' && ch <= 'Z') || | |
4778 (ch == '_' || ch == '$') || | |
4779 (not_first_ch && ch >= '0' && ch <= '9')) { | |
4780 last_is_slash = false; | |
4781 continue; | |
4782 } | |
4783 if (slash_ok && ch == '/') { | |
4784 if (last_is_slash) { | |
4785 return NULL; // Don't permit consecutive slashes | |
4786 } | |
4787 last_is_slash = true; | |
4788 continue; | |
4789 } | |
4790 } else { | |
4791 jint unicode_ch; | |
4792 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
4793 p = tmp_p; | |
4794 last_is_slash = false; | |
4795 // Check if ch is Java identifier start or is Java identifier part | |
4796 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
4797 EXCEPTION_MARK; | |
1142 | 4798 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
0 | 4799 |
4800 // return value | |
4801 JavaValue result(T_BOOLEAN); | |
4802 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
4803 JavaCallArguments args; | |
4804 args.push_int(unicode_ch); | |
4805 | |
4806 // public static boolean isJavaIdentifierStart(char ch); | |
4807 JavaCalls::call_static(&result, | |
4808 klass, | |
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4809 vmSymbols::isJavaIdentifierStart_name(), |
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4810 vmSymbols::int_bool_signature(), |
0 | 4811 &args, |
4812 THREAD); | |
4813 | |
4814 if (HAS_PENDING_EXCEPTION) { | |
4815 CLEAR_PENDING_EXCEPTION; | |
4816 return 0; | |
4817 } | |
4818 if (result.get_jboolean()) { | |
4819 continue; | |
4820 } | |
4821 | |
4822 if (not_first_ch) { | |
4823 // public static boolean isJavaIdentifierPart(char ch); | |
4824 JavaCalls::call_static(&result, | |
4825 klass, | |
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4826 vmSymbols::isJavaIdentifierPart_name(), |
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4827 vmSymbols::int_bool_signature(), |
0 | 4828 &args, |
4829 THREAD); | |
4830 | |
4831 if (HAS_PENDING_EXCEPTION) { | |
4832 CLEAR_PENDING_EXCEPTION; | |
4833 return 0; | |
4834 } | |
4835 | |
4836 if (result.get_jboolean()) { | |
4837 continue; | |
4838 } | |
4839 } | |
4840 } | |
4841 return (not_first_ch) ? old_p : NULL; | |
4842 } | |
4843 return (not_first_ch) ? p : NULL; | |
4844 } | |
4845 | |
4846 | |
4847 // Take pointer to a string. Skip over the longest part of the string that could | |
4848 // be taken as a field signature. Allow "void" if void_ok. | |
4849 // Return a pointer to just past the signature. | |
4850 // Return NULL if no legal signature is found. | |
4851 char* ClassFileParser::skip_over_field_signature(char* signature, | |
4852 bool void_ok, | |
4853 unsigned int length, | |
4854 TRAPS) { | |
4855 unsigned int array_dim = 0; | |
4856 while (length > 0) { | |
4857 switch (signature[0]) { | |
4858 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
4859 case JVM_SIGNATURE_BOOLEAN: | |
4860 case JVM_SIGNATURE_BYTE: | |
4861 case JVM_SIGNATURE_CHAR: | |
4862 case JVM_SIGNATURE_SHORT: | |
4863 case JVM_SIGNATURE_INT: | |
4864 case JVM_SIGNATURE_FLOAT: | |
4865 case JVM_SIGNATURE_LONG: | |
4866 case JVM_SIGNATURE_DOUBLE: | |
4867 return signature + 1; | |
4868 case JVM_SIGNATURE_CLASS: { | |
4869 if (_major_version < JAVA_1_5_VERSION) { | |
4870 // Skip over the class name if one is there | |
4871 char* p = skip_over_field_name(signature + 1, true, --length); | |
4872 | |
4873 // The next character better be a semicolon | |
4874 if (p && (p - signature) > 1 && p[0] == ';') { | |
4875 return p + 1; | |
4876 } | |
4877 } else { | |
4878 // 4900761: For class version > 48, any unicode is allowed in class name. | |
4879 length--; | |
4880 signature++; | |
4881 while (length > 0 && signature[0] != ';') { | |
4882 if (signature[0] == '.') { | |
4883 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
4884 } | |
4885 length--; | |
4886 signature++; | |
4887 } | |
4888 if (signature[0] == ';') { return signature + 1; } | |
4889 } | |
4890 | |
4891 return NULL; | |
4892 } | |
4893 case JVM_SIGNATURE_ARRAY: | |
4894 array_dim++; | |
4895 if (array_dim > 255) { | |
4896 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
4897 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
4898 } | |
4899 // The rest of what's there better be a legal signature | |
4900 signature++; | |
4901 length--; | |
4902 void_ok = false; | |
4903 break; | |
4904 | |
4905 default: | |
4906 return NULL; | |
4907 } | |
4908 } | |
4909 return NULL; | |
4910 } |