Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.cpp @ 8035:f64ffbf81af5
8006432: Ratio flags should be unsigned
Summary: Flags changed to be of uintx type
Reviewed-by: johnc, tamao
author | jwilhelm |
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date | Thu, 07 Feb 2013 15:51:25 +0100 |
parents | 22ead76da3f4 |
children | 24a91505f9d5 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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" |
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62 #include "utilities/globalDefinitions.hpp" |
0 | 63 |
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64 // We generally try to create the oops directly when parsing, rather than |
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65 // allocating temporary data structures and copying the bytes twice. A |
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66 // temporary area is only needed when parsing utf8 entries in the constant |
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67 // pool and when parsing line number tables. |
0 | 68 |
69 // We add assert in debug mode when class format is not checked. | |
70 | |
71 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
72 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
6868 | 73 #define JAVA_MAX_SUPPORTED_VERSION 52 |
0 | 74 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
75 | |
76 // Used for two backward compatibility reasons: | |
77 // - to check for new additions to the class file format in JDK1.5 | |
78 // - to check for bug fixes in the format checker in JDK1.5 | |
79 #define JAVA_1_5_VERSION 49 | |
80 | |
81 // Used for backward compatibility reasons: | |
82 // - to check for javac bug fixes that happened after 1.5 | |
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83 // - also used as the max version when running in jdk6 |
0 | 84 #define JAVA_6_VERSION 50 |
85 | |
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86 // Used for backward compatibility reasons: |
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87 // - to check NameAndType_info signatures more aggressively |
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88 #define JAVA_7_VERSION 51 |
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89 |
6934 | 90 // Extension method support. |
91 #define JAVA_8_VERSION 52 | |
92 | |
0 | 93 |
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94 void ClassFileParser::parse_constant_pool_entries(ClassLoaderData* loader_data, constantPoolHandle cp, int length, TRAPS) { |
0 | 95 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize |
96 // this function (_current can be allocated in a register, with scalar | |
97 // replacement of aggregates). The _current pointer is copied back to | |
98 // stream() when this function returns. DON'T call another method within | |
99 // this method that uses stream(). | |
100 ClassFileStream* cfs0 = stream(); | |
101 ClassFileStream cfs1 = *cfs0; | |
102 ClassFileStream* cfs = &cfs1; | |
103 #ifdef ASSERT | |
1685 | 104 assert(cfs->allocated_on_stack(),"should be local"); |
0 | 105 u1* old_current = cfs0->current(); |
106 #endif | |
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107 Handle class_loader(THREAD, loader_data->class_loader()); |
0 | 108 |
109 // Used for batching symbol allocations. | |
110 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
111 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
112 int indices[SymbolTable::symbol_alloc_batch_size]; | |
113 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
114 int names_count = 0; | |
115 | |
116 // parsing Index 0 is unused | |
117 for (int index = 1; index < length; index++) { | |
118 // Each of the following case guarantees one more byte in the stream | |
119 // for the following tag or the access_flags following constant pool, | |
120 // so we don't need bounds-check for reading tag. | |
121 u1 tag = cfs->get_u1_fast(); | |
122 switch (tag) { | |
123 case JVM_CONSTANT_Class : | |
124 { | |
125 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
126 u2 name_index = cfs->get_u2_fast(); | |
127 cp->klass_index_at_put(index, name_index); | |
128 } | |
129 break; | |
130 case JVM_CONSTANT_Fieldref : | |
131 { | |
132 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
133 u2 class_index = cfs->get_u2_fast(); | |
134 u2 name_and_type_index = cfs->get_u2_fast(); | |
135 cp->field_at_put(index, class_index, name_and_type_index); | |
136 } | |
137 break; | |
138 case JVM_CONSTANT_Methodref : | |
139 { | |
140 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
141 u2 class_index = cfs->get_u2_fast(); | |
142 u2 name_and_type_index = cfs->get_u2_fast(); | |
143 cp->method_at_put(index, class_index, name_and_type_index); | |
144 } | |
145 break; | |
146 case JVM_CONSTANT_InterfaceMethodref : | |
147 { | |
148 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
149 u2 class_index = cfs->get_u2_fast(); | |
150 u2 name_and_type_index = cfs->get_u2_fast(); | |
151 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
152 } | |
153 break; | |
154 case JVM_CONSTANT_String : | |
155 { | |
156 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
157 u2 string_index = cfs->get_u2_fast(); | |
158 cp->string_index_at_put(index, string_index); | |
159 } | |
160 break; | |
1602 | 161 case JVM_CONSTANT_MethodHandle : |
162 case JVM_CONSTANT_MethodType : | |
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163 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
1602 | 164 classfile_parse_error( |
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165 "Class file version does not support constant tag %u in class file %s", |
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166 tag, CHECK); |
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167 } |
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168 if (!EnableInvokeDynamic) { |
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169 classfile_parse_error( |
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170 "This JVM does not support constant tag %u in class file %s", |
1602 | 171 tag, CHECK); |
172 } | |
173 if (tag == JVM_CONSTANT_MethodHandle) { | |
174 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
175 u1 ref_kind = cfs->get_u1_fast(); | |
176 u2 method_index = cfs->get_u2_fast(); | |
177 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
178 } else if (tag == JVM_CONSTANT_MethodType) { | |
179 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
180 u2 signature_index = cfs->get_u2_fast(); | |
181 cp->method_type_index_at_put(index, signature_index); | |
182 } else { | |
183 ShouldNotReachHere(); | |
184 } | |
185 break; | |
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186 case JVM_CONSTANT_InvokeDynamic : |
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187 { |
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188 if (_major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
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189 classfile_parse_error( |
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190 "Class file version does not support constant tag %u in class file %s", |
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191 tag, CHECK); |
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192 } |
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193 if (!EnableInvokeDynamic) { |
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194 classfile_parse_error( |
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195 "This JVM does not support constant tag %u in class file %s", |
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196 tag, CHECK); |
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197 } |
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198 cfs->guarantee_more(5, CHECK); // bsm_index, nt, tag/access_flags |
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199 u2 bootstrap_specifier_index = cfs->get_u2_fast(); |
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200 u2 name_and_type_index = cfs->get_u2_fast(); |
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201 if (_max_bootstrap_specifier_index < (int) bootstrap_specifier_index) |
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202 _max_bootstrap_specifier_index = (int) bootstrap_specifier_index; // collect for later |
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203 cp->invoke_dynamic_at_put(index, bootstrap_specifier_index, name_and_type_index); |
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204 } |
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205 break; |
0 | 206 case JVM_CONSTANT_Integer : |
207 { | |
208 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
209 u4 bytes = cfs->get_u4_fast(); | |
210 cp->int_at_put(index, (jint) bytes); | |
211 } | |
212 break; | |
213 case JVM_CONSTANT_Float : | |
214 { | |
215 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
216 u4 bytes = cfs->get_u4_fast(); | |
217 cp->float_at_put(index, *(jfloat*)&bytes); | |
218 } | |
219 break; | |
220 case JVM_CONSTANT_Long : | |
221 // A mangled type might cause you to overrun allocated memory | |
222 guarantee_property(index+1 < length, | |
223 "Invalid constant pool entry %u in class file %s", | |
224 index, CHECK); | |
225 { | |
226 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
227 u8 bytes = cfs->get_u8_fast(); | |
228 cp->long_at_put(index, bytes); | |
229 } | |
230 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
231 break; | |
232 case JVM_CONSTANT_Double : | |
233 // A mangled type might cause you to overrun allocated memory | |
234 guarantee_property(index+1 < length, | |
235 "Invalid constant pool entry %u in class file %s", | |
236 index, CHECK); | |
237 { | |
238 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
239 u8 bytes = cfs->get_u8_fast(); | |
240 cp->double_at_put(index, *(jdouble*)&bytes); | |
241 } | |
242 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
243 break; | |
244 case JVM_CONSTANT_NameAndType : | |
245 { | |
246 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
247 u2 name_index = cfs->get_u2_fast(); | |
248 u2 signature_index = cfs->get_u2_fast(); | |
249 cp->name_and_type_at_put(index, name_index, signature_index); | |
250 } | |
251 break; | |
252 case JVM_CONSTANT_Utf8 : | |
253 { | |
254 cfs->guarantee_more(2, CHECK); // utf8_length | |
255 u2 utf8_length = cfs->get_u2_fast(); | |
256 u1* utf8_buffer = cfs->get_u1_buffer(); | |
257 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
258 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
259 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
260 cfs->skip_u1_fast(utf8_length); | |
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261 |
0 | 262 // Before storing the symbol, make sure it's legal |
263 if (_need_verify) { | |
264 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
265 } | |
266 | |
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267 if (EnableInvokeDynamic && has_cp_patch_at(index)) { |
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268 Handle patch = clear_cp_patch_at(index); |
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269 guarantee_property(java_lang_String::is_instance(patch()), |
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270 "Illegal utf8 patch at %d in class file %s", |
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271 index, CHECK); |
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272 char* str = java_lang_String::as_utf8_string(patch()); |
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273 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
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274 utf8_buffer = (u1*) str; |
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275 utf8_length = (int) strlen(str); |
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276 } |
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277 |
0 | 278 unsigned int hash; |
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279 Symbol* result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); |
0 | 280 if (result == NULL) { |
281 names[names_count] = (char*)utf8_buffer; | |
282 lengths[names_count] = utf8_length; | |
283 indices[names_count] = index; | |
284 hashValues[names_count++] = hash; | |
285 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
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286 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 287 names_count = 0; |
288 } | |
289 } else { | |
290 cp->symbol_at_put(index, result); | |
291 } | |
292 } | |
293 break; | |
294 default: | |
295 classfile_parse_error( | |
296 "Unknown constant tag %u in class file %s", tag, CHECK); | |
297 break; | |
298 } | |
299 } | |
300 | |
301 // Allocate the remaining symbols | |
302 if (names_count > 0) { | |
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303 SymbolTable::new_symbols(loader_data, cp, names_count, names, lengths, indices, hashValues, CHECK); |
0 | 304 } |
305 | |
306 // Copy _current pointer of local copy back to stream(). | |
307 #ifdef ASSERT | |
308 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
309 #endif | |
310 cfs0->set_current(cfs1.current()); | |
311 } | |
312 | |
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313 // This class unreferences constant pool symbols if an error has occurred |
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314 // while parsing the class before it is assigned into the class. |
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315 // If it gets an error after that it is unloaded and the constant pool will |
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316 // be cleaned up then. |
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317 class ConstantPoolCleaner : public StackObj { |
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318 constantPoolHandle _cphandle; |
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319 bool _in_error; |
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320 public: |
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321 ConstantPoolCleaner(constantPoolHandle cp) : _cphandle(cp), _in_error(true) {} |
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322 ~ConstantPoolCleaner() { |
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323 if (_in_error && _cphandle.not_null()) { |
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324 _cphandle->unreference_symbols(); |
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325 } |
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326 } |
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327 void set_in_error(bool clean) { _in_error = clean; } |
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328 }; |
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329 |
0 | 330 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } |
331 | |
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332 inline Symbol* check_symbol_at(constantPoolHandle cp, int index) { |
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333 if (valid_cp_range(index, cp->length()) && cp->tag_at(index).is_utf8()) |
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334 return cp->symbol_at(index); |
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335 else |
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336 return NULL; |
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337 } |
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338 |
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339 constantPoolHandle ClassFileParser::parse_constant_pool(ClassLoaderData* loader_data, TRAPS) { |
0 | 340 ClassFileStream* cfs = stream(); |
341 constantPoolHandle nullHandle; | |
342 | |
343 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
344 u2 length = cfs->get_u2_fast(); | |
345 guarantee_property( | |
346 length >= 1, "Illegal constant pool size %u in class file %s", | |
347 length, CHECK_(nullHandle)); | |
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348 ConstantPool* constant_pool = |
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349 ConstantPool::allocate(loader_data, |
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350 length, |
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351 CHECK_(nullHandle)); |
0 | 352 constantPoolHandle cp (THREAD, constant_pool); |
353 | |
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354 ConstantPoolCleaner cp_in_error(cp); // set constant pool to be cleaned up. |
0 | 355 |
356 // parsing constant pool entries | |
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357 parse_constant_pool_entries(loader_data, cp, length, CHECK_(nullHandle)); |
0 | 358 |
359 int index = 1; // declared outside of loops for portability | |
360 | |
361 // first verification pass - validate cross references and fixup class and string constants | |
362 for (index = 1; index < length; index++) { // Index 0 is unused | |
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363 jbyte tag = cp->tag_at(index).value(); |
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364 switch (tag) { |
0 | 365 case JVM_CONSTANT_Class : |
366 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
367 break; | |
368 case JVM_CONSTANT_Fieldref : | |
369 // fall through | |
370 case JVM_CONSTANT_Methodref : | |
371 // fall through | |
372 case JVM_CONSTANT_InterfaceMethodref : { | |
373 if (!_need_verify) break; | |
374 int klass_ref_index = cp->klass_ref_index_at(index); | |
375 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
376 check_property(valid_cp_range(klass_ref_index, length) && | |
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377 is_klass_reference(cp, klass_ref_index), |
0 | 378 "Invalid constant pool index %u in class file %s", |
379 klass_ref_index, | |
380 CHECK_(nullHandle)); | |
381 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
382 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
383 "Invalid constant pool index %u in class file %s", | |
384 name_and_type_ref_index, | |
385 CHECK_(nullHandle)); | |
386 break; | |
387 } | |
388 case JVM_CONSTANT_String : | |
389 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
390 break; | |
391 case JVM_CONSTANT_Integer : | |
392 break; | |
393 case JVM_CONSTANT_Float : | |
394 break; | |
395 case JVM_CONSTANT_Long : | |
396 case JVM_CONSTANT_Double : | |
397 index++; | |
398 check_property( | |
399 (index < length && cp->tag_at(index).is_invalid()), | |
400 "Improper constant pool long/double index %u in class file %s", | |
401 index, CHECK_(nullHandle)); | |
402 break; | |
403 case JVM_CONSTANT_NameAndType : { | |
404 if (!_need_verify) break; | |
405 int name_ref_index = cp->name_ref_index_at(index); | |
406 int signature_ref_index = cp->signature_ref_index_at(index); | |
407 check_property( | |
408 valid_cp_range(name_ref_index, length) && | |
409 cp->tag_at(name_ref_index).is_utf8(), | |
410 "Invalid constant pool index %u in class file %s", | |
411 name_ref_index, CHECK_(nullHandle)); | |
412 check_property( | |
413 valid_cp_range(signature_ref_index, length) && | |
414 cp->tag_at(signature_ref_index).is_utf8(), | |
415 "Invalid constant pool index %u in class file %s", | |
416 signature_ref_index, CHECK_(nullHandle)); | |
417 break; | |
418 } | |
419 case JVM_CONSTANT_Utf8 : | |
420 break; | |
421 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
422 case JVM_CONSTANT_UnresolvedClassInError: | |
423 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
424 break; | |
425 case JVM_CONSTANT_ClassIndex : | |
426 { | |
427 int class_index = cp->klass_index_at(index); | |
428 check_property( | |
429 valid_cp_range(class_index, length) && | |
430 cp->tag_at(class_index).is_utf8(), | |
431 "Invalid constant pool index %u in class file %s", | |
432 class_index, CHECK_(nullHandle)); | |
433 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
434 } | |
435 break; | |
436 case JVM_CONSTANT_StringIndex : | |
437 { | |
438 int string_index = cp->string_index_at(index); | |
439 check_property( | |
440 valid_cp_range(string_index, length) && | |
441 cp->tag_at(string_index).is_utf8(), | |
442 "Invalid constant pool index %u in class file %s", | |
443 string_index, CHECK_(nullHandle)); | |
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444 Symbol* sym = cp->symbol_at(string_index); |
0 | 445 cp->unresolved_string_at_put(index, sym); |
446 } | |
447 break; | |
1602 | 448 case JVM_CONSTANT_MethodHandle : |
449 { | |
450 int ref_index = cp->method_handle_index_at(index); | |
451 check_property( | |
452 valid_cp_range(ref_index, length) && | |
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453 EnableInvokeDynamic, |
1602 | 454 "Invalid constant pool index %u in class file %s", |
455 ref_index, CHECK_(nullHandle)); | |
456 constantTag tag = cp->tag_at(ref_index); | |
457 int ref_kind = cp->method_handle_ref_kind_at(index); | |
458 switch (ref_kind) { | |
459 case JVM_REF_getField: | |
460 case JVM_REF_getStatic: | |
461 case JVM_REF_putField: | |
462 case JVM_REF_putStatic: | |
463 check_property( | |
464 tag.is_field(), | |
465 "Invalid constant pool index %u in class file %s (not a field)", | |
466 ref_index, CHECK_(nullHandle)); | |
467 break; | |
468 case JVM_REF_invokeVirtual: | |
469 case JVM_REF_invokeStatic: | |
470 case JVM_REF_invokeSpecial: | |
471 case JVM_REF_newInvokeSpecial: | |
472 check_property( | |
473 tag.is_method(), | |
474 "Invalid constant pool index %u in class file %s (not a method)", | |
475 ref_index, CHECK_(nullHandle)); | |
476 break; | |
477 case JVM_REF_invokeInterface: | |
478 check_property( | |
479 tag.is_interface_method(), | |
480 "Invalid constant pool index %u in class file %s (not an interface method)", | |
481 ref_index, CHECK_(nullHandle)); | |
482 break; | |
483 default: | |
484 classfile_parse_error( | |
485 "Bad method handle kind at constant pool index %u in class file %s", | |
486 index, CHECK_(nullHandle)); | |
487 } | |
488 // Keep the ref_index unchanged. It will be indirected at link-time. | |
489 } | |
490 break; | |
491 case JVM_CONSTANT_MethodType : | |
492 { | |
493 int ref_index = cp->method_type_index_at(index); | |
494 check_property( | |
495 valid_cp_range(ref_index, length) && | |
496 cp->tag_at(ref_index).is_utf8() && | |
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497 EnableInvokeDynamic, |
1602 | 498 "Invalid constant pool index %u in class file %s", |
499 ref_index, CHECK_(nullHandle)); | |
500 } | |
501 break; | |
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502 case JVM_CONSTANT_InvokeDynamic : |
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503 { |
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504 int name_and_type_ref_index = cp->invoke_dynamic_name_and_type_ref_index_at(index); |
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505 check_property(valid_cp_range(name_and_type_ref_index, length) && |
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506 cp->tag_at(name_and_type_ref_index).is_name_and_type(), |
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507 "Invalid constant pool index %u in class file %s", |
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508 name_and_type_ref_index, |
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509 CHECK_(nullHandle)); |
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510 // bootstrap specifier index must be checked later, when BootstrapMethods attr is available |
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511 break; |
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512 } |
0 | 513 default: |
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514 fatal(err_msg("bad constant pool tag value %u", |
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515 cp->tag_at(index).value())); |
0 | 516 ShouldNotReachHere(); |
517 break; | |
518 } // end of switch | |
519 } // end of for | |
520 | |
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521 if (_cp_patches != NULL) { |
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522 // need to treat this_class specially... |
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523 assert(EnableInvokeDynamic, ""); |
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524 int this_class_index; |
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525 { |
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526 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
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527 u1* mark = cfs->current(); |
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528 u2 flags = cfs->get_u2_fast(); |
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529 this_class_index = cfs->get_u2_fast(); |
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530 cfs->set_current(mark); // revert to mark |
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531 } |
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532 |
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533 for (index = 1; index < length; index++) { // Index 0 is unused |
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534 if (has_cp_patch_at(index)) { |
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535 guarantee_property(index != this_class_index, |
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536 "Illegal constant pool patch to self at %d in class file %s", |
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537 index, CHECK_(nullHandle)); |
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538 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
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539 } |
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540 } |
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541 } |
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542 |
0 | 543 if (!_need_verify) { |
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544 cp_in_error.set_in_error(false); |
0 | 545 return cp; |
546 } | |
547 | |
548 // second verification pass - checks the strings are of the right format. | |
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549 // but not yet to the other entries |
0 | 550 for (index = 1; index < length; index++) { |
551 jbyte tag = cp->tag_at(index).value(); | |
552 switch (tag) { | |
553 case JVM_CONSTANT_UnresolvedClass: { | |
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554 Symbol* class_name = cp->unresolved_klass_at(index); |
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555 // check the name, even if _cp_patches will overwrite it |
0 | 556 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
557 break; | |
558 } | |
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559 case JVM_CONSTANT_NameAndType: { |
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560 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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561 int sig_index = cp->signature_ref_index_at(index); |
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562 int name_index = cp->name_ref_index_at(index); |
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563 Symbol* name = cp->symbol_at(name_index); |
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564 Symbol* sig = cp->symbol_at(sig_index); |
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565 if (sig->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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566 verify_legal_method_signature(name, sig, CHECK_(nullHandle)); |
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567 } else { |
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568 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); |
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569 } |
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570 } |
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571 break; |
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572 } |
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573 case JVM_CONSTANT_InvokeDynamic: |
0 | 574 case JVM_CONSTANT_Fieldref: |
575 case JVM_CONSTANT_Methodref: | |
576 case JVM_CONSTANT_InterfaceMethodref: { | |
577 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
578 // already verified to be utf8 | |
579 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
580 // already verified to be utf8 | |
581 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
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582 Symbol* name = cp->symbol_at(name_ref_index); |
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583 Symbol* signature = cp->symbol_at(signature_ref_index); |
0 | 584 if (tag == JVM_CONSTANT_Fieldref) { |
585 verify_legal_field_name(name, CHECK_(nullHandle)); | |
1586
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586 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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587 // Signature is verified above, when iterating NameAndType_info. |
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588 // Need only to be sure it's the right type. |
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589 if (signature->byte_at(0) == JVM_SIGNATURE_FUNC) { |
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590 throwIllegalSignature( |
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591 "Field", name, signature, CHECK_(nullHandle)); |
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592 } |
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593 } else { |
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594 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); |
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595 } |
0 | 596 } else { |
597 verify_legal_method_name(name, CHECK_(nullHandle)); | |
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598 if (_need_verify && _major_version >= JAVA_7_VERSION) { |
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599 // Signature is verified above, when iterating NameAndType_info. |
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600 // Need only to be sure it's the right type. |
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601 if (signature->byte_at(0) != JVM_SIGNATURE_FUNC) { |
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602 throwIllegalSignature( |
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603 "Method", name, signature, CHECK_(nullHandle)); |
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604 } |
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605 } else { |
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606 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); |
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607 } |
0 | 608 if (tag == JVM_CONSTANT_Methodref) { |
609 // 4509014: If a class method name begins with '<', it must be "<init>". | |
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610 assert(name != NULL, "method name in constant pool is null"); |
0 | 611 unsigned int name_len = name->utf8_length(); |
612 assert(name_len > 0, "bad method name"); // already verified as legal name | |
613 if (name->byte_at(0) == '<') { | |
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614 if (name != vmSymbols::object_initializer_name()) { |
0 | 615 classfile_parse_error( |
616 "Bad method name at constant pool index %u in class file %s", | |
617 name_ref_index, CHECK_(nullHandle)); | |
618 } | |
619 } | |
620 } | |
621 } | |
622 break; | |
623 } | |
1602 | 624 case JVM_CONSTANT_MethodHandle: { |
625 int ref_index = cp->method_handle_index_at(index); | |
626 int ref_kind = cp->method_handle_ref_kind_at(index); | |
627 switch (ref_kind) { | |
628 case JVM_REF_invokeVirtual: | |
629 case JVM_REF_invokeStatic: | |
630 case JVM_REF_invokeSpecial: | |
631 case JVM_REF_newInvokeSpecial: | |
632 { | |
633 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
634 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
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635 Symbol* name = cp->symbol_at(name_ref_index); |
1602 | 636 if (ref_kind == JVM_REF_newInvokeSpecial) { |
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637 if (name != vmSymbols::object_initializer_name()) { |
1602 | 638 classfile_parse_error( |
639 "Bad constructor name at constant pool index %u in class file %s", | |
640 name_ref_index, CHECK_(nullHandle)); | |
641 } | |
642 } else { | |
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643 if (name == vmSymbols::object_initializer_name()) { |
1602 | 644 classfile_parse_error( |
645 "Bad method name at constant pool index %u in class file %s", | |
646 name_ref_index, CHECK_(nullHandle)); | |
647 } | |
648 } | |
649 } | |
650 break; | |
651 // Other ref_kinds are already fully checked in previous pass. | |
652 } | |
653 break; | |
654 } | |
655 case JVM_CONSTANT_MethodType: { | |
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656 Symbol* no_name = vmSymbols::type_name(); // place holder |
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657 Symbol* signature = cp->method_type_signature_at(index); |
1602 | 658 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); |
659 break; | |
660 } | |
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661 case JVM_CONSTANT_Utf8: { |
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662 assert(cp->symbol_at(index)->refcount() != 0, "count corrupted"); |
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663 } |
0 | 664 } // end of switch |
665 } // end of for | |
666 | |
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667 cp_in_error.set_in_error(false); |
0 | 668 return cp; |
669 } | |
670 | |
671 | |
431
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672 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
2416
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673 assert(EnableInvokeDynamic, ""); |
431
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674 BasicType patch_type = T_VOID; |
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675 |
431
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676 switch (cp->tag_at(index).value()) { |
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677 |
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678 case JVM_CONSTANT_UnresolvedClass : |
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679 // Patching a class means pre-resolving it. |
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680 // The name in the constant pool is ignored. |
1602 | 681 if (java_lang_Class::is_instance(patch())) { |
431
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682 guarantee_property(!java_lang_Class::is_primitive(patch()), |
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683 "Illegal class patch at %d in class file %s", |
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684 index, CHECK); |
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685 cp->klass_at_put(index, java_lang_Class::as_Klass(patch())); |
431
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686 } else { |
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687 guarantee_property(java_lang_String::is_instance(patch()), |
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688 "Illegal class patch at %d in class file %s", |
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689 index, CHECK); |
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690 Symbol* name = java_lang_String::as_symbol(patch(), CHECK); |
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691 cp->unresolved_klass_at_put(index, name); |
431
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692 } |
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693 break; |
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694 |
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695 case JVM_CONSTANT_String : |
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696 // skip this patch and don't clear it. Needs the oop array for resolved |
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697 // references to be created first. |
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698 return; |
431
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699 |
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700 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
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701 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
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702 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
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703 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
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704 patch_prim: |
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705 { |
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706 jvalue value; |
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707 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
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708 guarantee_property(value_type == patch_type, |
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709 "Illegal primitive patch at %d in class file %s", |
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710 index, CHECK); |
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711 switch (value_type) { |
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712 case T_INT: cp->int_at_put(index, value.i); break; |
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713 case T_FLOAT: cp->float_at_put(index, value.f); break; |
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714 case T_LONG: cp->long_at_put(index, value.j); break; |
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715 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
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716 default: assert(false, ""); |
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717 } |
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718 } |
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719 break; |
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720 |
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721 default: |
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722 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
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723 guarantee_property(!has_cp_patch_at(index), |
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724 "Illegal unexpected patch at %d in class file %s", |
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725 index, CHECK); |
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726 return; |
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727 } |
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728 |
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729 // On fall-through, mark the patch as used. |
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730 clear_cp_patch_at(index); |
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731 } |
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732 |
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733 |
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734 |
0 | 735 class NameSigHash: public ResourceObj { |
736 public: | |
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737 Symbol* _name; // name |
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738 Symbol* _sig; // signature |
0 | 739 NameSigHash* _next; // Next entry in hash table |
740 }; | |
741 | |
742 | |
743 #define HASH_ROW_SIZE 256 | |
744 | |
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745 unsigned int hash(Symbol* name, Symbol* sig) { |
0 | 746 unsigned int raw_hash = 0; |
747 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
748 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
749 | |
750 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
751 } | |
752 | |
753 | |
754 void initialize_hashtable(NameSigHash** table) { | |
755 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
756 } | |
757 | |
758 // Return false if the name/sig combination is found in table. | |
759 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
760 // The old format checker uses heap sort to find duplicates. | |
761 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
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762 // of table since we don't expect Symbol*'s to move. |
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763 bool put_after_lookup(Symbol* name, Symbol* sig, NameSigHash** table) { |
0 | 764 assert(name != NULL, "name in constant pool is NULL"); |
765 | |
766 // First lookup for duplicates | |
767 int index = hash(name, sig); | |
768 NameSigHash* entry = table[index]; | |
769 while (entry != NULL) { | |
770 if (entry->_name == name && entry->_sig == sig) { | |
771 return false; | |
772 } | |
773 entry = entry->_next; | |
774 } | |
775 | |
776 // No duplicate is found, allocate a new entry and fill it. | |
777 entry = new NameSigHash(); | |
778 entry->_name = name; | |
779 entry->_sig = sig; | |
780 | |
781 // Insert into hash table | |
782 entry->_next = table[index]; | |
783 table[index] = entry; | |
784 | |
785 return true; | |
786 } | |
787 | |
788 | |
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789 Array<Klass*>* ClassFileParser::parse_interfaces(constantPoolHandle cp, |
0 | 790 int length, |
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791 ClassLoaderData* loader_data, |
0 | 792 Handle protection_domain, |
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793 Symbol* class_name, |
6934 | 794 bool* has_default_methods, |
0 | 795 TRAPS) { |
796 ClassFileStream* cfs = stream(); | |
797 assert(length > 0, "only called for length>0"); | |
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798 // FIXME: Leak at later OOM. |
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799 Array<Klass*>* interfaces = MetadataFactory::new_array<Klass*>(loader_data, length, NULL, CHECK_NULL); |
0 | 800 |
801 int index; | |
802 for (index = 0; index < length; index++) { | |
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803 u2 interface_index = cfs->get_u2(CHECK_NULL); |
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804 KlassHandle interf; |
0 | 805 check_property( |
806 valid_cp_range(interface_index, cp->length()) && | |
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807 is_klass_reference(cp, interface_index), |
0 | 808 "Interface name has bad constant pool index %u in class file %s", |
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809 interface_index, CHECK_NULL); |
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810 if (cp->tag_at(interface_index).is_klass()) { |
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811 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
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812 } else { |
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813 Symbol* unresolved_klass = cp->klass_name_at(interface_index); |
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814 |
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815 // Don't need to check legal name because it's checked when parsing constant pool. |
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816 // But need to make sure it's not an array type. |
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817 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
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818 "Bad interface name in class file %s", CHECK_NULL); |
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819 Handle class_loader(THREAD, loader_data->class_loader()); |
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820 |
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821 // Call resolve_super so classcircularity is checked |
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822 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, |
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823 unresolved_klass, class_loader, protection_domain, |
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824 false, CHECK_NULL); |
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825 interf = KlassHandle(THREAD, k); |
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826 } |
0 | 827 |
6983 | 828 if (!interf()->is_interface()) { |
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829 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", NULL); |
0 | 830 } |
6934 | 831 if (InstanceKlass::cast(interf())->has_default_methods()) { |
832 *has_default_methods = true; | |
833 } | |
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834 interfaces->at_put(index, interf()); |
0 | 835 } |
836 | |
837 if (!_need_verify || length <= 1) { | |
838 return interfaces; | |
839 } | |
840 | |
841 // Check if there's any duplicates in interfaces | |
842 ResourceMark rm(THREAD); | |
843 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
844 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
845 initialize_hashtable(interface_names); | |
846 bool dup = false; | |
847 { | |
848 debug_only(No_Safepoint_Verifier nsv;) | |
849 for (index = 0; index < length; index++) { | |
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850 Klass* k = interfaces->at(index); |
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851 Symbol* name = InstanceKlass::cast(k)->name(); |
0 | 852 // If no duplicates, add (name, NULL) in hashtable interface_names. |
853 if (!put_after_lookup(name, NULL, interface_names)) { | |
854 dup = true; | |
855 break; | |
856 } | |
857 } | |
858 } | |
859 if (dup) { | |
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860 classfile_parse_error("Duplicate interface name in class file %s", CHECK_NULL); |
0 | 861 } |
862 | |
863 return interfaces; | |
864 } | |
865 | |
866 | |
867 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
868 // Make sure the constant pool entry is of a type appropriate to this field | |
869 guarantee_property( | |
870 (constantvalue_index > 0 && | |
871 constantvalue_index < cp->length()), | |
872 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
873 constantvalue_index, CHECK); | |
874 constantTag value_type = cp->tag_at(constantvalue_index); | |
875 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
876 case T_LONG: | |
877 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
878 break; | |
879 case T_FLOAT: | |
880 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
881 break; | |
882 case T_DOUBLE: | |
883 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
884 break; | |
885 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
886 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
887 break; | |
888 case T_OBJECT: | |
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889 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
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890 && value_type.is_string()), |
0 | 891 "Bad string initial value in class file %s", CHECK); |
892 break; | |
893 default: | |
894 classfile_parse_error( | |
895 "Unable to set initial value %u in class file %s", | |
896 constantvalue_index, CHECK); | |
897 } | |
898 } | |
899 | |
900 | |
901 // Parse attributes for a field. | |
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902 void ClassFileParser::parse_field_attributes(ClassLoaderData* loader_data, |
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903 constantPoolHandle cp, |
0 | 904 u2 attributes_count, |
905 bool is_static, u2 signature_index, | |
906 u2* constantvalue_index_addr, | |
907 bool* is_synthetic_addr, | |
908 u2* generic_signature_index_addr, | |
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909 AnnotationArray** field_annotations, |
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910 AnnotationArray** field_type_annotations, |
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911 ClassFileParser::FieldAnnotationCollector* parsed_annotations, |
0 | 912 TRAPS) { |
913 ClassFileStream* cfs = stream(); | |
914 assert(attributes_count > 0, "length should be greater than 0"); | |
915 u2 constantvalue_index = 0; | |
916 u2 generic_signature_index = 0; | |
917 bool is_synthetic = false; | |
918 u1* runtime_visible_annotations = NULL; | |
919 int runtime_visible_annotations_length = 0; | |
920 u1* runtime_invisible_annotations = NULL; | |
921 int runtime_invisible_annotations_length = 0; | |
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922 u1* runtime_visible_type_annotations = NULL; |
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923 int runtime_visible_type_annotations_length = 0; |
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924 u1* runtime_invisible_type_annotations = NULL; |
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925 int runtime_invisible_type_annotations_length = 0; |
0 | 926 while (attributes_count--) { |
927 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
928 u2 attribute_name_index = cfs->get_u2_fast(); | |
929 u4 attribute_length = cfs->get_u4_fast(); | |
930 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
931 cp->tag_at(attribute_name_index).is_utf8(), | |
932 "Invalid field attribute index %u in class file %s", | |
933 attribute_name_index, | |
934 CHECK); | |
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935 Symbol* attribute_name = cp->symbol_at(attribute_name_index); |
0 | 936 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { |
937 // ignore if non-static | |
938 if (constantvalue_index != 0) { | |
939 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
940 } | |
941 check_property( | |
942 attribute_length == 2, | |
943 "Invalid ConstantValue field attribute length %u in class file %s", | |
944 attribute_length, CHECK); | |
945 constantvalue_index = cfs->get_u2(CHECK); | |
946 if (_need_verify) { | |
947 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
948 } | |
949 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
950 if (attribute_length != 0) { | |
951 classfile_parse_error( | |
952 "Invalid Synthetic field attribute length %u in class file %s", | |
953 attribute_length, CHECK); | |
954 } | |
955 is_synthetic = true; | |
956 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
957 if (attribute_length != 0) { | |
958 classfile_parse_error( | |
959 "Invalid Deprecated field attribute length %u in class file %s", | |
960 attribute_length, CHECK); | |
961 } | |
962 } else if (_major_version >= JAVA_1_5_VERSION) { | |
963 if (attribute_name == vmSymbols::tag_signature()) { | |
964 if (attribute_length != 2) { | |
965 classfile_parse_error( | |
966 "Wrong size %u for field's Signature attribute in class file %s", | |
967 attribute_length, CHECK); | |
968 } | |
969 generic_signature_index = cfs->get_u2(CHECK); | |
970 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
971 runtime_visible_annotations_length = attribute_length; | |
972 runtime_visible_annotations = cfs->get_u1_buffer(); | |
973 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
7587 | 974 parse_annotations(loader_data, |
975 runtime_visible_annotations, | |
976 runtime_visible_annotations_length, | |
977 cp, | |
978 parsed_annotations, | |
979 CHECK); | |
0 | 980 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
981 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
982 runtime_invisible_annotations_length = attribute_length; | |
983 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
984 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
985 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
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986 } else if (attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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987 runtime_visible_type_annotations_length = attribute_length; |
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988 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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989 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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990 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
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991 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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992 runtime_invisible_type_annotations_length = attribute_length; |
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993 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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994 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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995 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
0 | 996 } else { |
997 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
998 } | |
999 } else { | |
1000 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
1001 } | |
1002 } | |
1003 | |
1004 *constantvalue_index_addr = constantvalue_index; | |
1005 *is_synthetic_addr = is_synthetic; | |
1006 *generic_signature_index_addr = generic_signature_index; | |
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1007 *field_annotations = assemble_annotations(loader_data, |
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1008 runtime_visible_annotations, |
0 | 1009 runtime_visible_annotations_length, |
1010 runtime_invisible_annotations, | |
1011 runtime_invisible_annotations_length, | |
1012 CHECK); | |
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1013 *field_type_annotations = assemble_annotations(loader_data, |
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1014 runtime_visible_type_annotations, |
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1015 runtime_visible_type_annotations_length, |
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1016 runtime_invisible_type_annotations, |
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1017 runtime_invisible_type_annotations_length, |
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1018 CHECK); |
0 | 1019 return; |
1020 } | |
1021 | |
1022 | |
1023 // Field allocation types. Used for computing field offsets. | |
1024 | |
1025 enum FieldAllocationType { | |
1026 STATIC_OOP, // Oops | |
1027 STATIC_BYTE, // Boolean, Byte, char | |
1028 STATIC_SHORT, // shorts | |
1029 STATIC_WORD, // ints | |
3938 | 1030 STATIC_DOUBLE, // aligned long or double |
0 | 1031 NONSTATIC_OOP, |
1032 NONSTATIC_BYTE, | |
1033 NONSTATIC_SHORT, | |
1034 NONSTATIC_WORD, | |
1035 NONSTATIC_DOUBLE, | |
3938 | 1036 MAX_FIELD_ALLOCATION_TYPE, |
1037 BAD_ALLOCATION_TYPE = -1 | |
0 | 1038 }; |
1039 | |
3938 | 1040 static FieldAllocationType _basic_type_to_atype[2 * (T_CONFLICT + 1)] = { |
1041 BAD_ALLOCATION_TYPE, // 0 | |
1042 BAD_ALLOCATION_TYPE, // 1 | |
1043 BAD_ALLOCATION_TYPE, // 2 | |
1044 BAD_ALLOCATION_TYPE, // 3 | |
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1045 NONSTATIC_BYTE , // T_BOOLEAN = 4, |
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1046 NONSTATIC_SHORT, // T_CHAR = 5, |
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1047 NONSTATIC_WORD, // T_FLOAT = 6, |
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1048 NONSTATIC_DOUBLE, // T_DOUBLE = 7, |
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1049 NONSTATIC_BYTE, // T_BYTE = 8, |
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1050 NONSTATIC_SHORT, // T_SHORT = 9, |
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1051 NONSTATIC_WORD, // T_INT = 10, |
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1052 NONSTATIC_DOUBLE, // T_LONG = 11, |
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1053 NONSTATIC_OOP, // T_OBJECT = 12, |
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1054 NONSTATIC_OOP, // T_ARRAY = 13, |
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1055 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1056 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1057 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1058 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1059 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1060 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
3938 | 1061 BAD_ALLOCATION_TYPE, // 0 |
1062 BAD_ALLOCATION_TYPE, // 1 | |
1063 BAD_ALLOCATION_TYPE, // 2 | |
1064 BAD_ALLOCATION_TYPE, // 3 | |
6848
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1065 STATIC_BYTE , // T_BOOLEAN = 4, |
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1066 STATIC_SHORT, // T_CHAR = 5, |
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1067 STATIC_WORD, // T_FLOAT = 6, |
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1068 STATIC_DOUBLE, // T_DOUBLE = 7, |
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1069 STATIC_BYTE, // T_BYTE = 8, |
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1070 STATIC_SHORT, // T_SHORT = 9, |
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1071 STATIC_WORD, // T_INT = 10, |
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1072 STATIC_DOUBLE, // T_LONG = 11, |
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1073 STATIC_OOP, // T_OBJECT = 12, |
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1074 STATIC_OOP, // T_ARRAY = 13, |
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1075 BAD_ALLOCATION_TYPE, // T_VOID = 14, |
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1076 BAD_ALLOCATION_TYPE, // T_ADDRESS = 15, |
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1077 BAD_ALLOCATION_TYPE, // T_NARROWOOP = 16, |
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1078 BAD_ALLOCATION_TYPE, // T_METADATA = 17, |
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1079 BAD_ALLOCATION_TYPE, // T_NARROWKLASS = 18, |
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1080 BAD_ALLOCATION_TYPE, // T_CONFLICT = 19, |
0 | 1081 }; |
1082 | |
3938 | 1083 static FieldAllocationType basic_type_to_atype(bool is_static, BasicType type) { |
1084 assert(type >= T_BOOLEAN && type < T_VOID, "only allowable values"); | |
1085 FieldAllocationType result = _basic_type_to_atype[type + (is_static ? (T_CONFLICT + 1) : 0)]; | |
1086 assert(result != BAD_ALLOCATION_TYPE, "bad type"); | |
1087 return result; | |
1088 } | |
1089 | |
1090 class FieldAllocationCount: public ResourceObj { | |
1091 public: | |
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1092 u2 count[MAX_FIELD_ALLOCATION_TYPE]; |
3938 | 1093 |
1094 FieldAllocationCount() { | |
1095 for (int i = 0; i < MAX_FIELD_ALLOCATION_TYPE; i++) { | |
1096 count[i] = 0; | |
1097 } | |
1098 } | |
1099 | |
1100 FieldAllocationType update(bool is_static, BasicType type) { | |
1101 FieldAllocationType atype = basic_type_to_atype(is_static, type); | |
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1102 // Make sure there is no overflow with injected fields. |
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1103 assert(count[atype] < 0xFFFF, "More than 65535 fields"); |
3938 | 1104 count[atype]++; |
1105 return atype; | |
1106 } | |
1107 }; | |
1108 | |
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1109 Array<u2>* ClassFileParser::parse_fields(ClassLoaderData* loader_data, |
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1110 Symbol* class_name, |
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1111 constantPoolHandle cp, |
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1112 bool is_interface, |
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1113 FieldAllocationCount *fac, |
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1114 Array<AnnotationArray*>** fields_annotations, |
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1115 Array<AnnotationArray*>** fields_type_annotations, |
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1116 u2* java_fields_count_ptr, TRAPS) { |
0 | 1117 ClassFileStream* cfs = stream(); |
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1118 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 1119 u2 length = cfs->get_u2_fast(); |
3938 | 1120 *java_fields_count_ptr = length; |
1121 | |
1122 int num_injected = 0; | |
1123 InjectedField* injected = JavaClasses::get_injected(class_name, &num_injected); | |
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1124 int total_fields = length + num_injected; |
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1125 |
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1126 // The field array starts with tuples of shorts |
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1127 // [access, name index, sig index, initial value index, byte offset]. |
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1128 // A generic signature slot only exists for field with generic |
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1129 // signature attribute. And the access flag is set with |
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1130 // JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE for that field. The generic |
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1131 // signature slots are at the end of the field array and after all |
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1132 // other fields data. |
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1133 // |
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1134 // f1: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1135 // f2: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1136 // ... |
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1137 // fn: [access, name index, sig index, initial value index, low_offset, high_offset] |
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1138 // [generic signature index] |
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1139 // [generic signature index] |
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1140 // ... |
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1141 // |
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1142 // Allocate a temporary resource array for field data. For each field, |
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1143 // a slot is reserved in the temporary array for the generic signature |
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1144 // index. After parsing all fields, the data are copied to a permanent |
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1145 // array and any unused slots will be discarded. |
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1146 ResourceMark rm(THREAD); |
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1147 u2* fa = NEW_RESOURCE_ARRAY_IN_THREAD( |
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1148 THREAD, u2, total_fields * (FieldInfo::field_slots + 1)); |
0 | 1149 |
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1150 AnnotationArray* field_annotations = NULL; |
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1151 AnnotationArray* field_type_annotations = NULL; |
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1152 // The generic signature slots start after all other fields' data. |
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1153 int generic_signature_slot = total_fields * FieldInfo::field_slots; |
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1154 int num_generic_signature = 0; |
0 | 1155 for (int n = 0; n < length; n++) { |
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1156 cfs->guarantee_more(8, CHECK_NULL); // access_flags, name_index, descriptor_index, attributes_count |
0 | 1157 |
1158 AccessFlags access_flags; | |
1159 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
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1160 verify_legal_field_modifiers(flags, is_interface, CHECK_NULL); |
0 | 1161 access_flags.set_flags(flags); |
1162 | |
1163 u2 name_index = cfs->get_u2_fast(); | |
1164 int cp_size = cp->length(); | |
1165 check_property( | |
1166 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
1167 "Invalid constant pool index %u for field name in class file %s", | |
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1168 name_index, CHECK_NULL); |
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1169 Symbol* name = cp->symbol_at(name_index); |
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1170 verify_legal_field_name(name, CHECK_NULL); |
0 | 1171 |
1172 u2 signature_index = cfs->get_u2_fast(); | |
1173 check_property( | |
1174 valid_cp_range(signature_index, cp_size) && | |
1175 cp->tag_at(signature_index).is_utf8(), | |
1176 "Invalid constant pool index %u for field signature in class file %s", | |
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1177 signature_index, CHECK_NULL); |
2177
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1178 Symbol* sig = cp->symbol_at(signature_index); |
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1179 verify_legal_field_signature(name, sig, CHECK_NULL); |
0 | 1180 |
1181 u2 constantvalue_index = 0; | |
1182 bool is_synthetic = false; | |
1183 u2 generic_signature_index = 0; | |
1184 bool is_static = access_flags.is_static(); | |
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1185 FieldAnnotationCollector parsed_annotations; |
0 | 1186 |
1187 u2 attributes_count = cfs->get_u2_fast(); | |
1188 if (attributes_count > 0) { | |
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1189 parse_field_attributes(loader_data, |
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1190 cp, attributes_count, is_static, signature_index, |
0 | 1191 &constantvalue_index, &is_synthetic, |
1192 &generic_signature_index, &field_annotations, | |
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1193 &field_type_annotations, &parsed_annotations, |
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1194 CHECK_NULL); |
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1195 if (field_annotations != NULL) { |
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1196 if (*fields_annotations == NULL) { |
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1197 *fields_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1198 loader_data, length, NULL, |
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1199 CHECK_NULL); |
0 | 1200 } |
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1201 (*fields_annotations)->at_put(n, field_annotations); |
0 | 1202 } |
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1203 if (field_type_annotations != NULL) { |
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1204 if (*fields_type_annotations == NULL) { |
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1205 *fields_type_annotations = MetadataFactory::new_array<AnnotationArray*>( |
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1206 loader_data, length, NULL, |
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1207 CHECK_NULL); |
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1208 } |
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1209 (*fields_type_annotations)->at_put(n, field_type_annotations); |
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1210 } |
0 | 1211 if (is_synthetic) { |
1212 access_flags.set_is_synthetic(); | |
1213 } | |
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1214 if (generic_signature_index != 0) { |
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1215 access_flags.set_field_has_generic_signature(); |
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1216 fa[generic_signature_slot] = generic_signature_index; |
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1217 generic_signature_slot ++; |
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1218 num_generic_signature ++; |
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1219 } |
0 | 1220 } |
1221 | |
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1222 FieldInfo* field = FieldInfo::from_field_array(fa, n); |
3938 | 1223 field->initialize(access_flags.as_short(), |
1224 name_index, | |
1225 signature_index, | |
7587 | 1226 constantvalue_index); |
3938 | 1227 BasicType type = cp->basic_type_for_signature_at(signature_index); |
0 | 1228 |
1229 // Remember how many oops we encountered and compute allocation type | |
3938 | 1230 FieldAllocationType atype = fac->update(is_static, type); |
7587 | 1231 field->set_allocation_type(atype); |
1232 | |
1233 // After field is initialized with type, we can augment it with aux info | |
1234 if (parsed_annotations.has_any_annotations()) | |
1235 parsed_annotations.apply_to(field); | |
3938 | 1236 } |
1237 | |
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1238 int index = length; |
3938 | 1239 if (num_injected != 0) { |
1240 for (int n = 0; n < num_injected; n++) { | |
1241 // Check for duplicates | |
1242 if (injected[n].may_be_java) { | |
1243 Symbol* name = injected[n].name(); | |
1244 Symbol* signature = injected[n].signature(); | |
1245 bool duplicate = false; | |
1246 for (int i = 0; i < length; i++) { | |
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1247 FieldInfo* f = FieldInfo::from_field_array(fa, i); |
3938 | 1248 if (name == cp->symbol_at(f->name_index()) && |
1249 signature == cp->symbol_at(f->signature_index())) { | |
1250 // Symbol is desclared in Java so skip this one | |
1251 duplicate = true; | |
1252 break; | |
1253 } | |
1254 } | |
1255 if (duplicate) { | |
1256 // These will be removed from the field array at the end | |
1257 continue; | |
1258 } | |
1259 } | |
1260 | |
1261 // Injected field | |
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1262 FieldInfo* field = FieldInfo::from_field_array(fa, index); |
3938 | 1263 field->initialize(JVM_ACC_FIELD_INTERNAL, |
1264 injected[n].name_index, | |
1265 injected[n].signature_index, | |
1266 0); | |
1267 | |
1268 BasicType type = FieldType::basic_type(injected[n].signature()); | |
1269 | |
1270 // Remember how many oops we encountered and compute allocation type | |
1271 FieldAllocationType atype = fac->update(false, type); | |
7587 | 1272 field->set_allocation_type(atype); |
3938 | 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 = |
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|
1634 MetadataFactory::new_array<u1>(loader_data, code_attribute_length, 0, CHECK_NULL); |
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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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196
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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); |
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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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|
1678 Exceptions::fthrow(THREAD_AND_LOCATION, |
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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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|
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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|
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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|
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); |
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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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diff
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|
1694 } |
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diff
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|
1695 return index; |
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diff
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|
1696 } |
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diff
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|
1697 |
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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
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|
1700 // value := switch (tag:u1) { |
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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
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|
1702 // case e: e_class:u2 e_name:u2; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
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diff
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|
1703 // case s: s_con:u2; |
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diff
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|
1704 // case [: do(nval:u2) {value}; |
6d8f36bcef55
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diff
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|
1705 // case @: annotation; |
6d8f36bcef55
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diff
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|
1706 // case s: s_con:u2; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1707 // } |
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6711908: JVM needs direct access to some annotations
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diff
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|
1708 if ((index += 1) >= limit) return limit; // read tag |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1709 u1 tag = buffer[index-1]; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
1710 switch (tag) { |
6d8f36bcef55
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diff
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|
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
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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
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parents:
6100
diff
changeset
|
1719 { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1720 if ((index += 2) >= limit) return limit; // read nval |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
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diff
changeset
|
1721 int nval = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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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
changeset
|
1724 } |
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6711908: JVM needs direct access to some annotations
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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
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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
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parents:
6100
diff
changeset
|
1736 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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diff
changeset
|
1737 // Sift through annotations, looking for those significant to the VM: |
7587 | 1738 void ClassFileParser::parse_annotations(ClassLoaderData* loader_data, |
1739 u1* buffer, int limit, | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1740 constantPoolHandle cp, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1741 ClassFileParser::AnnotationCollector* coll, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1742 TRAPS) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1743 // annotations := do(nann:u2) {annotation} |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1744 int index = 0; |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1745 if ((index += 2) >= limit) return; // read nann |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
1746 int nann = Bytes::get_Java_u2(buffer+index-2); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1747 enum { // initial annotation layout |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1748 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
|
1749 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
|
1750 member_off = 4, // utf8 such as 'value' |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1751 tag_off = 6, // u1 such as 'c' (type) or 'e' (enum) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1752 e_tag_val = 'e', |
6d8f36bcef55
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diff
changeset
|
1753 e_type_off = 7, // utf8 such as 'Ljava/lang/annotation/RetentionPolicy;' |
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diff
changeset
|
1754 e_con_off = 9, // utf8 payload, such as 'SOURCE', 'CLASS', 'RUNTIME' |
6d8f36bcef55
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6100
diff
changeset
|
1755 e_size = 11, // end of 'e' annotation |
7587 | 1756 c_tag_val = 'c', // payload is type |
1757 c_con_off = 7, // utf8 payload, such as 'I' | |
6222
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diff
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|
1758 c_size = 9, // end of 'c' annotation |
7587 | 1759 s_tag_val = 's', // payload is String |
1760 s_con_off = 7, // utf8 payload, such as 'Ljava/lang/String;' | |
1761 s_size = 9, | |
6222
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diff
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|
1762 min_size = 6 // smallest possible size (zero members) |
6d8f36bcef55
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diff
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|
1763 }; |
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diff
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|
1764 while ((--nann) >= 0 && (index-2 + min_size <= limit)) { |
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diff
changeset
|
1765 int index0 = index; |
6d8f36bcef55
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6100
diff
changeset
|
1766 index = skip_annotation(buffer, limit, index); |
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6100
diff
changeset
|
1767 u1* abase = buffer + index0; |
6d8f36bcef55
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6100
diff
changeset
|
1768 int atype = Bytes::get_Java_u2(abase + atype_off); |
6d8f36bcef55
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diff
changeset
|
1769 int count = Bytes::get_Java_u2(abase + count_off); |
6d8f36bcef55
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diff
changeset
|
1770 Symbol* aname = check_symbol_at(cp, atype); |
6d8f36bcef55
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parents:
6100
diff
changeset
|
1771 if (aname == NULL) break; // invalid annotation name |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1772 Symbol* member = NULL; |
6d8f36bcef55
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parents:
6100
diff
changeset
|
1773 if (count >= 1) { |
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6100
diff
changeset
|
1774 int member_index = Bytes::get_Java_u2(abase + member_off); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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6100
diff
changeset
|
1775 member = check_symbol_at(cp, member_index); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
1776 if (member == NULL) break; // invalid member name |
6d8f36bcef55
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parents:
6100
diff
changeset
|
1777 } |
6d8f36bcef55
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6100
diff
changeset
|
1778 |
6d8f36bcef55
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6100
diff
changeset
|
1779 // Here is where parsing particular annotations will take place. |
7587 | 1780 AnnotationCollector::ID id = coll->annotation_index(loader_data, aname); |
6222
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6100
diff
changeset
|
1781 if (id == AnnotationCollector::_unknown) continue; |
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diff
changeset
|
1782 coll->set_annotation(id); |
7587 | 1783 |
1784 if (id == AnnotationCollector::_sun_misc_Contended) { | |
1785 if (count == 1 | |
1786 && s_size == (index - index0) // match size | |
1787 && s_tag_val == *(abase + tag_off) | |
1788 && member == vmSymbols::value_name()) { | |
1789 u2 group_index = Bytes::get_Java_u2(abase + s_con_off); | |
1790 coll->set_contended_group(group_index); | |
1791 } else { | |
1792 coll->set_contended_group(0); // default contended group | |
1793 } | |
1794 coll->set_contended(true); | |
1795 } else { | |
1796 coll->set_contended(false); | |
1797 } | |
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1798 } |
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1799 } |
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1800 |
7587 | 1801 ClassFileParser::AnnotationCollector::ID |
1802 ClassFileParser::AnnotationCollector::annotation_index(ClassLoaderData* loader_data, | |
1803 Symbol* name) { | |
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1804 vmSymbols::SID sid = vmSymbols::find_sid(name); |
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1805 // Privileged code can use all annotations. Other code silently drops some. |
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1806 bool privileged = loader_data->is_the_null_class_loader_data() || |
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1807 loader_data->is_anonymous(); |
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1808 switch (sid) { |
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1809 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_ForceInline_signature): |
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1810 if (_location != _in_method) break; // only allow for methods |
7587 | 1811 if (!privileged) break; // only allow in privileged code |
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1812 return _method_ForceInline; |
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1813 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_DontInline_signature): |
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1814 if (_location != _in_method) break; // only allow for methods |
7587 | 1815 if (!privileged) break; // only allow in privileged code |
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1816 return _method_DontInline; |
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1817 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Compiled_signature): |
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1818 if (_location != _in_method) break; // only allow for methods |
7587 | 1819 if (!privileged) break; // only allow in privileged code |
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1820 return _method_LambdaForm_Compiled; |
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1821 case vmSymbols::VM_SYMBOL_ENUM_NAME(java_lang_invoke_LambdaForm_Hidden_signature): |
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1822 if (_location != _in_method) break; // only allow for methods |
7587 | 1823 if (!privileged) break; // only allow in privileged code |
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1824 return _method_LambdaForm_Hidden; |
7587 | 1825 case vmSymbols::VM_SYMBOL_ENUM_NAME(sun_misc_Contended_signature): |
1826 if (_location != _in_field && _location != _in_class) break; // only allow for fields and classes | |
1827 if (!EnableContended || (RestrictContended && !privileged)) break; // honor privileges | |
1828 return _sun_misc_Contended; | |
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1829 default: break; |
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1830 } |
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1831 return AnnotationCollector::_unknown; |
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1832 } |
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1833 |
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1834 void ClassFileParser::FieldAnnotationCollector::apply_to(FieldInfo* f) { |
7587 | 1835 if (is_contended()) |
1836 f->set_contended_group(contended_group()); | |
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1837 } |
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1838 |
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1839 void ClassFileParser::MethodAnnotationCollector::apply_to(methodHandle m) { |
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1840 if (has_annotation(_method_ForceInline)) |
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1841 m->set_force_inline(true); |
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1842 if (has_annotation(_method_DontInline)) |
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1843 m->set_dont_inline(true); |
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1844 if (has_annotation(_method_LambdaForm_Compiled) && m->intrinsic_id() == vmIntrinsics::_none) |
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1845 m->set_intrinsic_id(vmIntrinsics::_compiledLambdaForm); |
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1846 if (has_annotation(_method_LambdaForm_Hidden)) |
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1847 m->set_hidden(true); |
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1848 } |
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1849 |
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1850 void ClassFileParser::ClassAnnotationCollector::apply_to(instanceKlassHandle k) { |
7587 | 1851 k->set_is_contended(is_contended()); |
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1852 } |
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1853 |
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1854 |
0 | 1855 #define MAX_ARGS_SIZE 255 |
1856 #define MAX_CODE_SIZE 65535 | |
1857 #define INITIAL_MAX_LVT_NUMBER 256 | |
1858 | |
1859 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
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1860 // attribute is inlined. This is cumbersome to avoid since we inline most of the parts in the |
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1861 // Method* to save footprint, so we only know the size of the resulting Method* when the |
0 | 1862 // entire method attribute is parsed. |
1863 // | |
1864 // The promoted_flags parameter is used to pass relevant access_flags | |
1865 // from the method back up to the containing klass. These flag values | |
1866 // are added to klass's access_flags. | |
1867 | |
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1868 methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data, |
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1869 constantPoolHandle cp, |
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1870 bool is_interface, |
0 | 1871 AccessFlags *promoted_flags, |
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1872 AnnotationArray** method_annotations, |
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1873 AnnotationArray** method_parameter_annotations, |
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1874 AnnotationArray** method_default_annotations, |
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1875 AnnotationArray** method_type_annotations, |
0 | 1876 TRAPS) { |
1877 ClassFileStream* cfs = stream(); | |
1878 methodHandle nullHandle; | |
1879 ResourceMark rm(THREAD); | |
1880 // Parse fixed parts | |
1881 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1882 | |
1883 int flags = cfs->get_u2_fast(); | |
1884 u2 name_index = cfs->get_u2_fast(); | |
1885 int cp_size = cp->length(); | |
1886 check_property( | |
1887 valid_cp_range(name_index, cp_size) && | |
1888 cp->tag_at(name_index).is_utf8(), | |
1889 "Illegal constant pool index %u for method name in class file %s", | |
1890 name_index, CHECK_(nullHandle)); | |
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1891 Symbol* name = cp->symbol_at(name_index); |
0 | 1892 verify_legal_method_name(name, CHECK_(nullHandle)); |
1893 | |
1894 u2 signature_index = cfs->get_u2_fast(); | |
1895 guarantee_property( | |
1896 valid_cp_range(signature_index, cp_size) && | |
1897 cp->tag_at(signature_index).is_utf8(), | |
1898 "Illegal constant pool index %u for method signature in class file %s", | |
1899 signature_index, CHECK_(nullHandle)); | |
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1900 Symbol* signature = cp->symbol_at(signature_index); |
0 | 1901 |
1902 AccessFlags access_flags; | |
1903 if (name == vmSymbols::class_initializer_name()) { | |
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1904 // We ignore the other access flags for a valid class initializer. |
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1905 // (JVM Spec 2nd ed., chapter 4.6) |
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1906 if (_major_version < 51) { // backward compatibility |
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1907 flags = JVM_ACC_STATIC; |
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1908 } else if ((flags & JVM_ACC_STATIC) == JVM_ACC_STATIC) { |
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1909 flags &= JVM_ACC_STATIC | JVM_ACC_STRICT; |
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1910 } |
0 | 1911 } else { |
1912 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
1913 } | |
1914 | |
1915 int args_size = -1; // only used when _need_verify is true | |
1916 if (_need_verify) { | |
1917 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
1918 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
1919 if (args_size > MAX_ARGS_SIZE) { | |
1920 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
1921 } | |
1922 } | |
1923 | |
1924 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
1925 | |
1926 // Default values for code and exceptions attribute elements | |
1927 u2 max_stack = 0; | |
1928 u2 max_locals = 0; | |
1929 u4 code_length = 0; | |
1930 u1* code_start = 0; | |
1931 u2 exception_table_length = 0; | |
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1932 u2* exception_table_start = NULL; |
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1933 Array<int>* exception_handlers = Universe::the_empty_int_array(); |
0 | 1934 u2 checked_exceptions_length = 0; |
1935 u2* checked_exceptions_start = NULL; | |
1936 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
1937 int linenumber_table_length = 0; | |
1938 int total_lvt_length = 0; | |
1939 u2 lvt_cnt = 0; | |
1940 u2 lvtt_cnt = 0; | |
1941 bool lvt_allocated = false; | |
1942 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1943 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1944 u2* localvariable_table_length; | |
1945 u2** localvariable_table_start; | |
1946 u2* localvariable_type_table_length; | |
1947 u2** localvariable_type_table_start; | |
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1948 u2 method_parameters_length = 0; |
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1949 u1* method_parameters_data = NULL; |
0 | 1950 bool parsed_code_attribute = false; |
1951 bool parsed_checked_exceptions_attribute = false; | |
1952 bool parsed_stackmap_attribute = false; | |
1953 // stackmap attribute - JDK1.5 | |
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1954 Array<u1>* stackmap_data = NULL; |
0 | 1955 u2 generic_signature_index = 0; |
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1956 MethodAnnotationCollector parsed_annotations; |
0 | 1957 u1* runtime_visible_annotations = NULL; |
1958 int runtime_visible_annotations_length = 0; | |
1959 u1* runtime_invisible_annotations = NULL; | |
1960 int runtime_invisible_annotations_length = 0; | |
1961 u1* runtime_visible_parameter_annotations = NULL; | |
1962 int runtime_visible_parameter_annotations_length = 0; | |
1963 u1* runtime_invisible_parameter_annotations = NULL; | |
1964 int runtime_invisible_parameter_annotations_length = 0; | |
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1965 u1* runtime_visible_type_annotations = NULL; |
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1966 int runtime_visible_type_annotations_length = 0; |
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1967 u1* runtime_invisible_type_annotations = NULL; |
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1968 int runtime_invisible_type_annotations_length = 0; |
0 | 1969 u1* annotation_default = NULL; |
1970 int annotation_default_length = 0; | |
1971 | |
1972 // Parse code and exceptions attribute | |
1973 u2 method_attributes_count = cfs->get_u2_fast(); | |
1974 while (method_attributes_count--) { | |
1975 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
1976 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
1977 u4 method_attribute_length = cfs->get_u4_fast(); | |
1978 check_property( | |
1979 valid_cp_range(method_attribute_name_index, cp_size) && | |
1980 cp->tag_at(method_attribute_name_index).is_utf8(), | |
1981 "Invalid method attribute name index %u in class file %s", | |
1982 method_attribute_name_index, CHECK_(nullHandle)); | |
1983 | |
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1984 Symbol* method_attribute_name = cp->symbol_at(method_attribute_name_index); |
0 | 1985 if (method_attribute_name == vmSymbols::tag_code()) { |
1986 // Parse Code attribute | |
1987 if (_need_verify) { | |
6934 | 1988 guarantee_property( |
1989 !access_flags.is_native() && !access_flags.is_abstract(), | |
0 | 1990 "Code attribute in native or abstract methods in class file %s", |
1991 CHECK_(nullHandle)); | |
1992 } | |
1993 if (parsed_code_attribute) { | |
1994 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
1995 } | |
1996 parsed_code_attribute = true; | |
1997 | |
1998 // Stack size, locals size, and code size | |
1999 if (_major_version == 45 && _minor_version <= 2) { | |
2000 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
2001 max_stack = cfs->get_u1_fast(); | |
2002 max_locals = cfs->get_u1_fast(); | |
2003 code_length = cfs->get_u2_fast(); | |
2004 } else { | |
2005 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
2006 max_stack = cfs->get_u2_fast(); | |
2007 max_locals = cfs->get_u2_fast(); | |
2008 code_length = cfs->get_u4_fast(); | |
2009 } | |
2010 if (_need_verify) { | |
2011 guarantee_property(args_size <= max_locals, | |
2012 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
2013 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
2014 "Invalid method Code length %u in class file %s", | |
2015 code_length, CHECK_(nullHandle)); | |
2016 } | |
2017 // Code pointer | |
2018 code_start = cfs->get_u1_buffer(); | |
2019 assert(code_start != NULL, "null code start"); | |
2020 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
2021 cfs->skip_u1_fast(code_length); | |
2022 | |
2023 // Exception handler table | |
2024 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
2025 exception_table_length = cfs->get_u2_fast(); | |
2026 if (exception_table_length > 0) { | |
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2027 exception_table_start = |
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2028 parse_exception_table(loader_data, code_length, exception_table_length, cp, CHECK_(nullHandle)); |
0 | 2029 } |
2030 | |
2031 // Parse additional attributes in code attribute | |
2032 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
2033 u2 code_attributes_count = cfs->get_u2_fast(); | |
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2034 |
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2035 unsigned int calculated_attribute_length = 0; |
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2036 |
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2037 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
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2038 calculated_attribute_length = |
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2039 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
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2040 } else { |
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2041 // max_stack, locals and length are smaller in pre-version 45.2 classes |
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2042 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
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2043 } |
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2044 calculated_attribute_length += |
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2045 code_length + |
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2046 sizeof(exception_table_length) + |
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2047 sizeof(code_attributes_count) + |
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2048 exception_table_length * |
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2049 ( sizeof(u2) + // start_pc |
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2050 sizeof(u2) + // end_pc |
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2051 sizeof(u2) + // handler_pc |
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2052 sizeof(u2) ); // catch_type_index |
0 | 2053 |
2054 while (code_attributes_count--) { | |
2055 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
2056 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
2057 u4 code_attribute_length = cfs->get_u4_fast(); | |
2058 calculated_attribute_length += code_attribute_length + | |
2059 sizeof(code_attribute_name_index) + | |
2060 sizeof(code_attribute_length); | |
2061 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
2062 cp->tag_at(code_attribute_name_index).is_utf8(), | |
2063 "Invalid code attribute name index %u in class file %s", | |
2064 code_attribute_name_index, | |
2065 CHECK_(nullHandle)); | |
2066 if (LoadLineNumberTables && | |
2067 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
2068 // Parse and compress line number table | |
2069 parse_linenumber_table(code_attribute_length, code_length, | |
2070 &linenumber_table, CHECK_(nullHandle)); | |
2071 | |
2072 } else if (LoadLocalVariableTables && | |
2073 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
2074 // Parse local variable table | |
2075 if (!lvt_allocated) { | |
2076 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2077 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2078 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2079 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2080 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2081 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2082 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2083 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2084 lvt_allocated = true; | |
2085 } | |
2086 if (lvt_cnt == max_lvt_cnt) { | |
2087 max_lvt_cnt <<= 1; | |
2088 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
2089 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
2090 } | |
2091 localvariable_table_start[lvt_cnt] = | |
2092 parse_localvariable_table(code_length, | |
2093 max_locals, | |
2094 code_attribute_length, | |
2095 cp, | |
2096 &localvariable_table_length[lvt_cnt], | |
2097 false, // is not LVTT | |
2098 CHECK_(nullHandle)); | |
2099 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
2100 lvt_cnt++; | |
2101 } else if (LoadLocalVariableTypeTables && | |
2102 _major_version >= JAVA_1_5_VERSION && | |
2103 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
2104 if (!lvt_allocated) { | |
2105 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2106 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2107 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2108 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2109 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2110 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
2111 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2112 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
2113 lvt_allocated = true; | |
2114 } | |
2115 // Parse local variable type table | |
2116 if (lvtt_cnt == max_lvtt_cnt) { | |
2117 max_lvtt_cnt <<= 1; | |
2118 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
2119 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
2120 } | |
2121 localvariable_type_table_start[lvtt_cnt] = | |
2122 parse_localvariable_table(code_length, | |
2123 max_locals, | |
2124 code_attribute_length, | |
2125 cp, | |
2126 &localvariable_type_table_length[lvtt_cnt], | |
2127 true, // is LVTT | |
2128 CHECK_(nullHandle)); | |
2129 lvtt_cnt++; | |
2130 } else if (UseSplitVerifier && | |
2131 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
2132 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
2133 // Stack map is only needed by the new verifier in JDK1.5. | |
2134 if (parsed_stackmap_attribute) { | |
2135 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
2136 } | |
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2137 stackmap_data = parse_stackmap_table(loader_data, code_attribute_length, CHECK_(nullHandle)); |
0 | 2138 parsed_stackmap_attribute = true; |
2139 } else { | |
2140 // Skip unknown attributes | |
2141 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
2142 } | |
2143 } | |
2144 // check method attribute length | |
2145 if (_need_verify) { | |
2146 guarantee_property(method_attribute_length == calculated_attribute_length, | |
2147 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
2148 } | |
2149 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
2150 // Parse Exceptions attribute | |
2151 if (parsed_checked_exceptions_attribute) { | |
2152 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
2153 } | |
2154 parsed_checked_exceptions_attribute = true; | |
2155 checked_exceptions_start = | |
2156 parse_checked_exceptions(&checked_exceptions_length, | |
2157 method_attribute_length, | |
2158 cp, CHECK_(nullHandle)); | |
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2159 } else if (method_attribute_name == vmSymbols::tag_method_parameters()) { |
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2160 method_parameters_length = cfs->get_u1_fast(); |
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2161 // Track the actual size (note: this is written for clarity; a |
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2162 // decent compiler will CSE and constant-fold this into a single |
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2163 // expression) |
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2164 u2 actual_size = 1; |
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2165 method_parameters_data = cfs->get_u1_buffer(); |
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2166 actual_size += 2 * method_parameters_length; |
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2167 cfs->skip_u2_fast(method_parameters_length); |
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2168 actual_size += 4 * method_parameters_length; |
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2169 cfs->skip_u4_fast(method_parameters_length); |
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2170 // Enforce attribute length |
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2171 if (method_attribute_length != actual_size) { |
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2172 classfile_parse_error( |
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2173 "Invalid MethodParameters method attribute length %u in class file %s", |
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2174 method_attribute_length, CHECK_(nullHandle)); |
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2175 } |
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2176 // ignore this attribute if it cannot be reflected |
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2177 if (!SystemDictionary::Parameter_klass_loaded()) |
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2178 method_parameters_length = 0; |
0 | 2179 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { |
2180 if (method_attribute_length != 0) { | |
2181 classfile_parse_error( | |
2182 "Invalid Synthetic method attribute length %u in class file %s", | |
2183 method_attribute_length, CHECK_(nullHandle)); | |
2184 } | |
2185 // Should we check that there hasn't already been a synthetic attribute? | |
2186 access_flags.set_is_synthetic(); | |
2187 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
2188 if (method_attribute_length != 0) { | |
2189 classfile_parse_error( | |
2190 "Invalid Deprecated method attribute length %u in class file %s", | |
2191 method_attribute_length, CHECK_(nullHandle)); | |
2192 } | |
2193 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2194 if (method_attribute_name == vmSymbols::tag_signature()) { | |
2195 if (method_attribute_length != 2) { | |
2196 classfile_parse_error( | |
2197 "Invalid Signature attribute length %u in class file %s", | |
2198 method_attribute_length, CHECK_(nullHandle)); | |
2199 } | |
2200 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
2201 generic_signature_index = cfs->get_u2_fast(); | |
2202 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
2203 runtime_visible_annotations_length = method_attribute_length; | |
2204 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2205 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
7587 | 2206 parse_annotations(loader_data, |
2207 runtime_visible_annotations, | |
6934 | 2208 runtime_visible_annotations_length, cp, &parsed_annotations, |
2209 CHECK_(nullHandle)); | |
0 | 2210 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); |
2211 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
2212 runtime_invisible_annotations_length = method_attribute_length; | |
2213 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2214 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2215 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
2216 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
2217 runtime_visible_parameter_annotations_length = method_attribute_length; | |
2218 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
2219 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
2220 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
2221 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
2222 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
2223 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
2224 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
2225 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
2226 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
2227 annotation_default_length = method_attribute_length; | |
2228 annotation_default = cfs->get_u1_buffer(); | |
2229 assert(annotation_default != NULL, "null annotation default"); | |
2230 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
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2231 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_type_annotations()) { |
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2232 runtime_visible_type_annotations_length = method_attribute_length; |
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2233 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
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2234 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
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2235 // No need for the VM to parse Type annotations |
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2236 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK_(nullHandle)); |
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2237 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_type_annotations()) { |
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2238 runtime_invisible_type_annotations_length = method_attribute_length; |
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2239 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
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2240 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
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2241 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK_(nullHandle)); |
0 | 2242 } else { |
2243 // Skip unknown attributes | |
2244 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2245 } | |
2246 } else { | |
2247 // Skip unknown attributes | |
2248 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
2249 } | |
2250 } | |
2251 | |
2252 if (linenumber_table != NULL) { | |
2253 linenumber_table->write_terminator(); | |
2254 linenumber_table_length = linenumber_table->position(); | |
2255 } | |
2256 | |
2257 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
2258 if (_need_verify) { | |
2259 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
2260 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
2261 } | |
2262 | |
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2263 // All sizing information for a Method* is finally available, now create it |
6934 | 2264 Method* m = Method::allocate( |
2265 loader_data, code_length, access_flags, linenumber_table_length, | |
2266 total_lvt_length, exception_table_length, checked_exceptions_length, | |
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2267 method_parameters_length, generic_signature_index, |
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2268 ConstMethod::NORMAL, CHECK_(nullHandle)); |
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2269 |
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2270 ClassLoadingService::add_class_method_size(m->size()*HeapWordSize); |
0 | 2271 |
2272 // Fill in information from fixed part (access_flags already set) | |
2273 m->set_constants(cp()); | |
2274 m->set_name_index(name_index); | |
2275 m->set_signature_index(signature_index); | |
2276 #ifdef CC_INTERP | |
2277 // hmm is there a gc issue here?? | |
2278 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
2279 m->set_result_index(rtf.type()); | |
2280 #endif | |
2281 | |
2282 if (args_size >= 0) { | |
2283 m->set_size_of_parameters(args_size); | |
2284 } else { | |
2285 m->compute_size_of_parameters(THREAD); | |
2286 } | |
2287 #ifdef ASSERT | |
2288 if (args_size >= 0) { | |
2289 m->compute_size_of_parameters(THREAD); | |
2290 assert(args_size == m->size_of_parameters(), ""); | |
2291 } | |
2292 #endif | |
2293 | |
2294 // Fill in code attribute information | |
2295 m->set_max_stack(max_stack); | |
2296 m->set_max_locals(max_locals); | |
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2297 m->constMethod()->set_stackmap_data(stackmap_data); |
0 | 2298 |
2299 // Copy byte codes | |
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2300 m->set_code(code_start); |
0 | 2301 |
2302 // Copy line number table | |
2303 if (linenumber_table != NULL) { | |
2304 memcpy(m->compressed_linenumber_table(), | |
2305 linenumber_table->buffer(), linenumber_table_length); | |
2306 } | |
2307 | |
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2308 // Copy exception table |
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2309 if (exception_table_length > 0) { |
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2310 int size = |
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2311 exception_table_length * sizeof(ExceptionTableElement) / sizeof(u2); |
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2312 copy_u2_with_conversion((u2*) m->exception_table_start(), |
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2313 exception_table_start, size); |
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2314 } |
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2315 |
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2316 // Copy method parameters |
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2317 if (method_parameters_length > 0) { |
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2318 MethodParametersElement* elem = m->constMethod()->method_parameters_start(); |
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2319 for(int i = 0; i < method_parameters_length; i++) { |
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2320 elem[i].name_cp_index = |
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2321 Bytes::get_Java_u2(method_parameters_data); |
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2322 method_parameters_data += 2; |
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2323 u4 flags = Bytes::get_Java_u4(method_parameters_data); |
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2324 // This caused an alignment fault on Sparc, if flags was a u4 |
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2325 elem[i].flags_lo = extract_low_short_from_int(flags); |
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2326 elem[i].flags_hi = extract_high_short_from_int(flags); |
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2327 method_parameters_data += 4; |
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2328 } |
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2329 } |
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2330 |
0 | 2331 // Copy checked exceptions |
2332 if (checked_exceptions_length > 0) { | |
2333 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
2334 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
2335 } | |
2336 | |
2337 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
2338 * | |
2339 * Rules for LVT's and LVTT's are: | |
2340 * - There can be any number of LVT's and LVTT's. | |
2341 * - If there are n LVT's, it is the same as if there was just | |
2342 * one LVT containing all the entries from the n LVT's. | |
2343 * - There may be no more than one LVT entry per local variable. | |
2344 * Two LVT entries are 'equal' if these fields are the same: | |
2345 * start_pc, length, name, slot | |
2346 * - There may be no more than one LVTT entry per each LVT entry. | |
2347 * Each LVTT entry has to match some LVT entry. | |
2348 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
2349 */ | |
2350 if (total_lvt_length > 0) { | |
2351 int tbl_no, idx; | |
2352 | |
2353 promoted_flags->set_has_localvariable_table(); | |
2354 | |
2355 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
2356 initialize_hashtable(lvt_Hash); | |
2357 | |
2358 // To fill LocalVariableTable in | |
2359 Classfile_LVT_Element* cf_lvt; | |
2360 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
2361 | |
2362 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
2363 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
2364 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
2365 copy_lvt_element(&cf_lvt[idx], lvt); | |
2366 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
2367 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
2368 && _need_verify | |
2369 && _major_version >= JAVA_1_5_VERSION ) { | |
2370 clear_hashtable(lvt_Hash); | |
2371 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
2372 "entry for '%s' in class file %s", | |
2373 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
2374 CHECK_(nullHandle)); | |
2375 } | |
2376 } | |
2377 } | |
2378 | |
2379 // To merge LocalVariableTable and LocalVariableTypeTable | |
2380 Classfile_LVT_Element* cf_lvtt; | |
2381 LocalVariableTableElement lvtt_elem; | |
2382 | |
2383 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
2384 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
2385 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
2386 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
2387 int index = hash(&lvtt_elem); | |
2388 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
2389 if (entry == NULL) { | |
2390 if (_need_verify) { | |
2391 clear_hashtable(lvt_Hash); | |
2392 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
2393 "does not match any LVT entry", | |
2394 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
2395 CHECK_(nullHandle)); | |
2396 } | |
2397 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
2398 clear_hashtable(lvt_Hash); | |
2399 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
2400 "entry for '%s' in class file %s", | |
2401 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
2402 CHECK_(nullHandle)); | |
2403 } else { | |
2404 // to add generic signatures into LocalVariableTable | |
2405 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
2406 } | |
2407 } | |
2408 } | |
2409 clear_hashtable(lvt_Hash); | |
2410 } | |
2411 | |
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2412 if (parsed_annotations.has_any_annotations()) |
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2413 parsed_annotations.apply_to(m); |
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2414 *method_annotations = assemble_annotations(loader_data, |
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2415 runtime_visible_annotations, |
0 | 2416 runtime_visible_annotations_length, |
2417 runtime_invisible_annotations, | |
2418 runtime_invisible_annotations_length, | |
2419 CHECK_(nullHandle)); | |
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2420 *method_parameter_annotations = assemble_annotations(loader_data, |
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2421 runtime_visible_parameter_annotations, |
0 | 2422 runtime_visible_parameter_annotations_length, |
2423 runtime_invisible_parameter_annotations, | |
2424 runtime_invisible_parameter_annotations_length, | |
2425 CHECK_(nullHandle)); | |
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2426 *method_default_annotations = assemble_annotations(loader_data, |
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2427 annotation_default, |
0 | 2428 annotation_default_length, |
2429 NULL, | |
2430 0, | |
2431 CHECK_(nullHandle)); | |
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2432 *method_type_annotations = assemble_annotations(loader_data, |
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2433 runtime_visible_type_annotations, |
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2434 runtime_visible_type_annotations_length, |
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2435 runtime_invisible_type_annotations, |
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2436 runtime_invisible_type_annotations_length, |
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2437 CHECK_(nullHandle)); |
0 | 2438 |
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2439 if (name == vmSymbols::finalize_method_name() && |
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2440 signature == vmSymbols::void_method_signature()) { |
0 | 2441 if (m->is_empty_method()) { |
2442 _has_empty_finalizer = true; | |
2443 } else { | |
2444 _has_finalizer = true; | |
2445 } | |
2446 } | |
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2447 if (name == vmSymbols::object_initializer_name() && |
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2448 signature == vmSymbols::void_method_signature() && |
0 | 2449 m->is_vanilla_constructor()) { |
2450 _has_vanilla_constructor = true; | |
2451 } | |
2452 | |
2453 return m; | |
2454 } | |
2455 | |
2456 | |
2457 // The promoted_flags parameter is used to pass relevant access_flags | |
2458 // from the methods back up to the containing klass. These flag values | |
2459 // are added to klass's access_flags. | |
2460 | |
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2461 Array<Method*>* ClassFileParser::parse_methods(ClassLoaderData* loader_data, |
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2462 constantPoolHandle cp, |
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2463 bool is_interface, |
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2464 AccessFlags* promoted_flags, |
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2465 bool* has_final_method, |
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2466 Array<AnnotationArray*>** methods_annotations, |
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2467 Array<AnnotationArray*>** methods_parameter_annotations, |
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2468 Array<AnnotationArray*>** methods_default_annotations, |
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2469 Array<AnnotationArray*>** methods_type_annotations, |
6934 | 2470 bool* has_default_methods, |
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2471 TRAPS) { |
0 | 2472 ClassFileStream* cfs = stream(); |
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2473 AnnotationArray* method_annotations = NULL; |
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2474 AnnotationArray* method_parameter_annotations = NULL; |
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2475 AnnotationArray* method_default_annotations = NULL; |
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2476 AnnotationArray* method_type_annotations = NULL; |
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2477 cfs->guarantee_more(2, CHECK_NULL); // length |
0 | 2478 u2 length = cfs->get_u2_fast(); |
2479 if (length == 0) { | |
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2480 return Universe::the_empty_method_array(); |
0 | 2481 } else { |
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2482 // FIXME: Handle leaks at later failures. |
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2483 Array<Method*>* methods = MetadataFactory::new_array<Method*>(loader_data, length, NULL, CHECK_NULL); |
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2484 |
0 | 2485 HandleMark hm(THREAD); |
2486 for (int index = 0; index < length; index++) { | |
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2487 methodHandle method = parse_method(loader_data, |
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2488 cp, is_interface, |
0 | 2489 promoted_flags, |
2490 &method_annotations, | |
2491 &method_parameter_annotations, | |
2492 &method_default_annotations, | |
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2493 &method_type_annotations, |
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2494 CHECK_NULL); |
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2495 |
0 | 2496 if (method->is_final()) { |
2497 *has_final_method = true; | |
2498 } | |
6934 | 2499 if (is_interface && !method->is_abstract() && !method->is_static()) { |
2500 // default method | |
2501 *has_default_methods = true; | |
2502 } | |
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2503 methods->at_put(index, method()); |
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2504 |
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2505 if (method_annotations != NULL) { |
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2506 if (*methods_annotations == NULL) { |
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2507 *methods_annotations = |
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2508 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
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2509 } |
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2510 (*methods_annotations)->at_put(index, method_annotations); |
0 | 2511 } |
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2512 |
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2513 if (method_parameter_annotations != NULL) { |
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|
2514 if (*methods_parameter_annotations == NULL) { |
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|
2515 *methods_parameter_annotations = |
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2516 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
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2517 } |
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2518 (*methods_parameter_annotations)->at_put(index, method_parameter_annotations); |
0 | 2519 } |
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2520 |
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2521 if (method_default_annotations != NULL) { |
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2522 if (*methods_default_annotations == NULL) { |
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|
2523 *methods_default_annotations = |
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2524 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
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|
2525 } |
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2526 (*methods_default_annotations)->at_put(index, method_default_annotations); |
0 | 2527 } |
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2528 |
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2529 if (method_type_annotations != NULL) { |
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2530 if (*methods_type_annotations == NULL) { |
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2531 *methods_type_annotations = |
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2532 MetadataFactory::new_array<AnnotationArray*>(loader_data, length, NULL, CHECK_NULL); |
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2533 } |
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2534 (*methods_type_annotations)->at_put(index, method_type_annotations); |
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2535 } |
0 | 2536 } |
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2537 |
0 | 2538 if (_need_verify && length > 1) { |
2539 // Check duplicated methods | |
2540 ResourceMark rm(THREAD); | |
2541 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2542 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
2543 initialize_hashtable(names_and_sigs); | |
2544 bool dup = false; | |
2545 { | |
2546 debug_only(No_Safepoint_Verifier nsv;) | |
2547 for (int i = 0; i < length; i++) { | |
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2548 Method* m = methods->at(i); |
0 | 2549 // If no duplicates, add name/signature in hashtable names_and_sigs. |
2550 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
2551 dup = true; | |
2552 break; | |
2553 } | |
2554 } | |
2555 } | |
2556 if (dup) { | |
2557 classfile_parse_error("Duplicate method name&signature in class file %s", | |
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2558 CHECK_NULL); |
0 | 2559 } |
2560 } | |
2561 return methods; | |
2562 } | |
2563 } | |
2564 | |
2565 | |
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2566 Array<int>* ClassFileParser::sort_methods(ClassLoaderData* loader_data, |
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2567 Array<Method*>* methods, |
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2568 Array<AnnotationArray*>* methods_annotations, |
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2569 Array<AnnotationArray*>* methods_parameter_annotations, |
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2570 Array<AnnotationArray*>* methods_default_annotations, |
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2571 Array<AnnotationArray*>* methods_type_annotations, |
0 | 2572 TRAPS) { |
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2573 int length = methods->length(); |
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2574 // If JVMTI original method ordering or sharing is enabled we have to |
0 | 2575 // remember the original class file ordering. |
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2576 // We temporarily use the vtable_index field in the Method* to store the |
0 | 2577 // class file index, so we can read in after calling qsort. |
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2578 // Put the method ordering in the shared archive. |
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2579 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
0 | 2580 for (int index = 0; index < length; index++) { |
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2581 Method* m = methods->at(index); |
0 | 2582 assert(!m->valid_vtable_index(), "vtable index should not be set"); |
2583 m->set_vtable_index(index); | |
2584 } | |
2585 } | |
2586 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
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2587 // Note that the ordering is not alphabetical, see Symbol::fast_compare |
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2588 Method::sort_methods(methods, methods_annotations, |
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2589 methods_parameter_annotations, |
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2590 methods_default_annotations, |
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2591 methods_type_annotations); |
0 | 2592 |
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2593 // If JVMTI original method ordering or sharing is enabled construct int |
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2594 // array remembering the original ordering |
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2595 if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) { |
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2596 Array<int>* method_ordering = MetadataFactory::new_array<int>(loader_data, length, CHECK_NULL); |
0 | 2597 for (int index = 0; index < length; index++) { |
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2598 Method* m = methods->at(index); |
0 | 2599 int old_index = m->vtable_index(); |
2600 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
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2601 method_ordering->at_put(index, old_index); |
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2602 m->set_vtable_index(Method::invalid_vtable_index); |
0 | 2603 } |
2604 return method_ordering; | |
2605 } else { | |
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2606 return Universe::the_empty_int_array(); |
0 | 2607 } |
2608 } | |
2609 | |
2610 | |
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2611 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS) { |
0 | 2612 ClassFileStream* cfs = stream(); |
2613 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
2614 u2 sourcefile_index = cfs->get_u2_fast(); | |
2615 check_property( | |
2616 valid_cp_range(sourcefile_index, cp->length()) && | |
2617 cp->tag_at(sourcefile_index).is_utf8(), | |
2618 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
2619 sourcefile_index, CHECK); | |
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2620 set_class_sourcefile(cp->symbol_at(sourcefile_index)); |
0 | 2621 } |
2622 | |
2623 | |
2624 | |
2625 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
2626 int length, TRAPS) { | |
2627 ClassFileStream* cfs = stream(); | |
2628 u1* sde_buffer = cfs->get_u1_buffer(); | |
2629 assert(sde_buffer != NULL, "null sde buffer"); | |
2630 | |
2631 // Don't bother storing it if there is no way to retrieve it | |
2632 if (JvmtiExport::can_get_source_debug_extension()) { | |
6226 | 2633 assert((length+1) > length, "Overflow checking"); |
2634 u1* sde = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, u1, length+1); | |
2635 for (int i = 0; i < length; i++) { | |
2636 sde[i] = sde_buffer[i]; | |
2637 } | |
2638 sde[length] = '\0'; | |
2639 set_class_sde_buffer((char*)sde, length); | |
0 | 2640 } |
2641 // Got utf8 string, set stream position forward | |
2642 cfs->skip_u1(length, CHECK); | |
2643 } | |
2644 | |
2645 | |
2646 // Inner classes can be static, private or protected (classic VM does this) | |
2647 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
2648 | |
2649 // Return number of classes in the inner classes attribute table | |
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2650 u2 ClassFileParser::parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
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2651 u1* inner_classes_attribute_start, |
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2652 bool parsed_enclosingmethod_attribute, |
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2653 u2 enclosing_method_class_index, |
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2654 u2 enclosing_method_method_index, |
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2655 constantPoolHandle cp, |
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2656 TRAPS) { |
0 | 2657 ClassFileStream* cfs = stream(); |
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2658 u1* current_mark = cfs->current(); |
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2659 u2 length = 0; |
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2660 if (inner_classes_attribute_start != NULL) { |
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2661 cfs->set_current(inner_classes_attribute_start); |
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2662 cfs->guarantee_more(2, CHECK_0); // length |
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2663 length = cfs->get_u2_fast(); |
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2664 } |
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2665 |
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2666 // 4-tuples of shorts of inner classes data and 2 shorts of enclosing |
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2667 // method data: |
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2668 // [inner_class_info_index, |
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2669 // outer_class_info_index, |
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2670 // inner_name_index, |
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2671 // inner_class_access_flags, |
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2672 // ... |
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2673 // enclosing_method_class_index, |
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2674 // enclosing_method_method_index] |
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2675 int size = length * 4 + (parsed_enclosingmethod_attribute ? 2 : 0); |
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2676 // FIXME: Will leak on exceptions. |
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2677 Array<u2>* inner_classes = MetadataFactory::new_array<u2>(loader_data, size, CHECK_0); |
0 | 2678 int index = 0; |
2679 int cp_size = cp->length(); | |
2680 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
2681 for (int n = 0; n < length; n++) { | |
2682 // Inner class index | |
2683 u2 inner_class_info_index = cfs->get_u2_fast(); | |
2684 check_property( | |
2685 inner_class_info_index == 0 || | |
2686 (valid_cp_range(inner_class_info_index, cp_size) && | |
431
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6653858: dynamic languages need to be able to load anonymous classes
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|
2687 is_klass_reference(cp, inner_class_info_index)), |
0 | 2688 "inner_class_info_index %u has bad constant type in class file %s", |
2689 inner_class_info_index, CHECK_0); | |
2690 // Outer class index | |
2691 u2 outer_class_info_index = cfs->get_u2_fast(); | |
2692 check_property( | |
2693 outer_class_info_index == 0 || | |
2694 (valid_cp_range(outer_class_info_index, cp_size) && | |
431
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|
2695 is_klass_reference(cp, outer_class_info_index)), |
0 | 2696 "outer_class_info_index %u has bad constant type in class file %s", |
2697 outer_class_info_index, CHECK_0); | |
2698 // Inner class name | |
2699 u2 inner_name_index = cfs->get_u2_fast(); | |
2700 check_property( | |
2701 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
2702 cp->tag_at(inner_name_index).is_utf8()), | |
2703 "inner_name_index %u has bad constant type in class file %s", | |
2704 inner_name_index, CHECK_0); | |
2705 if (_need_verify) { | |
2706 guarantee_property(inner_class_info_index != outer_class_info_index, | |
2707 "Class is both outer and inner class in class file %s", CHECK_0); | |
2708 } | |
2709 // Access flags | |
2710 AccessFlags inner_access_flags; | |
2711 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
2712 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2713 // Set abstract bit for old class files for backward compatibility | |
2714 flags |= JVM_ACC_ABSTRACT; | |
2715 } | |
2716 verify_legal_class_modifiers(flags, CHECK_0); | |
2717 inner_access_flags.set_flags(flags); | |
2718 | |
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2719 inner_classes->at_put(index++, inner_class_info_index); |
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2720 inner_classes->at_put(index++, outer_class_info_index); |
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2721 inner_classes->at_put(index++, inner_name_index); |
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2722 inner_classes->at_put(index++, inner_access_flags.as_short()); |
0 | 2723 } |
2724 | |
2725 // 4347400: make sure there's no duplicate entry in the classes array | |
2726 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
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2727 for(int i = 0; i < length * 4; i += 4) { |
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2728 for(int j = i + 4; j < length * 4; j += 4) { |
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2729 guarantee_property((inner_classes->at(i) != inner_classes->at(j) || |
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2730 inner_classes->at(i+1) != inner_classes->at(j+1) || |
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2731 inner_classes->at(i+2) != inner_classes->at(j+2) || |
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2732 inner_classes->at(i+3) != inner_classes->at(j+3)), |
0 | 2733 "Duplicate entry in InnerClasses in class file %s", |
2734 CHECK_0); | |
2735 } | |
2736 } | |
2737 } | |
2738 | |
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|
2739 // Set EnclosingMethod class and method indexes. |
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|
2740 if (parsed_enclosingmethod_attribute) { |
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2741 inner_classes->at_put(index++, enclosing_method_class_index); |
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2742 inner_classes->at_put(index++, enclosing_method_method_index); |
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|
2743 } |
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|
2744 assert(index == size, "wrong size"); |
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|
2745 |
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2746 // Update InstanceKlass with inner class info. |
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|
2747 set_class_inner_classes(inner_classes); |
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2748 |
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|
2749 // Restore buffer's current position. |
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|
2750 cfs->set_current(current_mark); |
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|
2751 |
0 | 2752 return length; |
2753 } | |
2754 | |
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2755 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS) { |
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|
2756 set_class_synthetic_flag(true); |
0 | 2757 } |
2758 | |
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2759 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS) { |
0 | 2760 ClassFileStream* cfs = stream(); |
2761 u2 signature_index = cfs->get_u2(CHECK); | |
2762 check_property( | |
2763 valid_cp_range(signature_index, cp->length()) && | |
2764 cp->tag_at(signature_index).is_utf8(), | |
2765 "Invalid constant pool index %u in Signature attribute in class file %s", | |
2766 signature_index, CHECK); | |
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|
2767 set_class_generic_signature(cp->symbol_at(signature_index)); |
0 | 2768 } |
2769 | |
6725
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2770 void ClassFileParser::parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, |
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2771 constantPoolHandle cp, |
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diff
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|
2772 u4 attribute_byte_length, TRAPS) { |
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diff
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|
2773 ClassFileStream* cfs = stream(); |
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|
2774 u1* current_start = cfs->current(); |
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|
2775 |
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diff
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|
2776 cfs->guarantee_more(2, CHECK); // length |
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diff
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2777 int attribute_array_length = cfs->get_u2_fast(); |
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diff
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|
2778 |
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diff
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|
2779 guarantee_property(_max_bootstrap_specifier_index < attribute_array_length, |
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diff
changeset
|
2780 "Short length on BootstrapMethods in class file %s", |
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diff
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|
2781 CHECK); |
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diff
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|
2782 |
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diff
changeset
|
2783 // The attribute contains a counted array of counted tuples of shorts, |
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diff
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|
2784 // represending bootstrap specifiers: |
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diff
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|
2785 // length*{bootstrap_method_index, argument_count*{argument_index}} |
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diff
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|
2786 int operand_count = (attribute_byte_length - sizeof(u2)) / sizeof(u2); |
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diff
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|
2787 // operand_count = number of shorts in attr, except for leading length |
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diff
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|
2788 |
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diff
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|
2789 // The attribute is copied into a short[] array. |
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diff
changeset
|
2790 // The array begins with a series of short[2] pairs, one for each tuple. |
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diff
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|
2791 int index_size = (attribute_array_length * 2); |
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|
2792 |
6725
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|
2793 Array<u2>* operands = MetadataFactory::new_array<u2>(loader_data, index_size + operand_count, CHECK); |
2011
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|
2794 |
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|
2795 int operand_fill_index = index_size; |
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|
2796 int cp_size = cp->length(); |
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|
2797 |
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diff
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|
2798 for (int n = 0; n < attribute_array_length; n++) { |
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diff
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|
2799 // Store a 32-bit offset into the header of the operand array. |
6725
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|
2800 ConstantPool::operand_offset_at_put(operands, n, operand_fill_index); |
2011
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|
2801 |
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diff
changeset
|
2802 // Read a bootstrap specifier. |
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diff
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|
2803 cfs->guarantee_more(sizeof(u2) * 2, CHECK); // bsm, argc |
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|
2804 u2 bootstrap_method_index = cfs->get_u2_fast(); |
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diff
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|
2805 u2 argument_count = cfs->get_u2_fast(); |
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diff
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|
2806 check_property( |
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diff
changeset
|
2807 valid_cp_range(bootstrap_method_index, cp_size) && |
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diff
changeset
|
2808 cp->tag_at(bootstrap_method_index).is_method_handle(), |
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diff
changeset
|
2809 "bootstrap_method_index %u has bad constant type in class file %s", |
2085 | 2810 bootstrap_method_index, |
2011
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diff
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|
2811 CHECK); |
6725
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|
2812 operands->at_put(operand_fill_index++, bootstrap_method_index); |
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|
2813 operands->at_put(operand_fill_index++, argument_count); |
2011
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|
2814 |
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diff
changeset
|
2815 cfs->guarantee_more(sizeof(u2) * argument_count, CHECK); // argv[argc] |
dad31fc330cd
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parents:
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diff
changeset
|
2816 for (int j = 0; j < argument_count; j++) { |
2085 | 2817 u2 argument_index = cfs->get_u2_fast(); |
2011
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parents:
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diff
changeset
|
2818 check_property( |
2085 | 2819 valid_cp_range(argument_index, cp_size) && |
2820 cp->tag_at(argument_index).is_loadable_constant(), | |
2011
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7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
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diff
changeset
|
2821 "argument_index %u has bad constant type in class file %s", |
2085 | 2822 argument_index, |
2011
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diff
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|
2823 CHECK); |
6725
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changeset
|
2824 operands->at_put(operand_fill_index++, argument_index); |
2011
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diff
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|
2825 } |
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diff
changeset
|
2826 } |
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diff
changeset
|
2827 |
6725
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changeset
|
2828 assert(operand_fill_index == operands->length(), "exact fill"); |
da91efe96a93
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coleenp
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changeset
|
2829 assert(ConstantPool::operand_array_length(operands) == attribute_array_length, "correct decode"); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2830 |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2831 u1* current_end = cfs->current(); |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2832 guarantee_property(current_end == current_start + attribute_byte_length, |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2833 "Bad length on BootstrapMethods in class file %s", |
dad31fc330cd
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jrose
parents:
1972
diff
changeset
|
2834 CHECK); |
dad31fc330cd
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parents:
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diff
changeset
|
2835 |
6725
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changeset
|
2836 cp->set_operands(operands); |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
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diff
changeset
|
2837 } |
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diff
changeset
|
2838 |
6725
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coleenp
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changeset
|
2839 void ClassFileParser::parse_classfile_attributes(ClassLoaderData* loader_data, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
2840 constantPoolHandle cp, |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2841 ClassFileParser::ClassAnnotationCollector* parsed_annotations, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2842 TRAPS) { |
0 | 2843 ClassFileStream* cfs = stream(); |
2844 // Set inner classes attribute to default sentinel | |
6725
da91efe96a93
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coleenp
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changeset
|
2845 set_class_inner_classes(Universe::the_empty_short_array()); |
0 | 2846 cfs->guarantee_more(2, CHECK); // attributes_count |
2847 u2 attributes_count = cfs->get_u2_fast(); | |
2848 bool parsed_sourcefile_attribute = false; | |
2849 bool parsed_innerclasses_attribute = false; | |
2850 bool parsed_enclosingmethod_attribute = false; | |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2851 bool parsed_bootstrap_methods_attribute = false; |
0 | 2852 u1* runtime_visible_annotations = NULL; |
2853 int runtime_visible_annotations_length = 0; | |
2854 u1* runtime_invisible_annotations = NULL; | |
2855 int runtime_invisible_annotations_length = 0; | |
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2856 u1* runtime_visible_type_annotations = NULL; |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2857 int runtime_visible_type_annotations_length = 0; |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2858 u1* runtime_invisible_type_annotations = NULL; |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2859 int runtime_invisible_type_annotations_length = 0; |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2860 u1* inner_classes_attribute_start = NULL; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2861 u4 inner_classes_attribute_length = 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2862 u2 enclosing_method_class_index = 0; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2863 u2 enclosing_method_method_index = 0; |
0 | 2864 // Iterate over attributes |
2865 while (attributes_count--) { | |
2866 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
2867 u2 attribute_name_index = cfs->get_u2_fast(); | |
2868 u4 attribute_length = cfs->get_u4_fast(); | |
2869 check_property( | |
2870 valid_cp_range(attribute_name_index, cp->length()) && | |
2871 cp->tag_at(attribute_name_index).is_utf8(), | |
2872 "Attribute name has bad constant pool index %u in class file %s", | |
2873 attribute_name_index, CHECK); | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
2874 Symbol* tag = cp->symbol_at(attribute_name_index); |
0 | 2875 if (tag == vmSymbols::tag_source_file()) { |
2876 // Check for SourceFile tag | |
2877 if (_need_verify) { | |
2878 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
2879 } | |
2880 if (parsed_sourcefile_attribute) { | |
2881 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
2882 } else { | |
2883 parsed_sourcefile_attribute = true; | |
2884 } | |
6222
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jrose
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diff
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|
2885 parse_classfile_sourcefile_attribute(cp, CHECK); |
0 | 2886 } else if (tag == vmSymbols::tag_source_debug_extension()) { |
2887 // Check for SourceDebugExtension tag | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2888 parse_classfile_source_debug_extension_attribute(cp, (int)attribute_length, CHECK); |
0 | 2889 } else if (tag == vmSymbols::tag_inner_classes()) { |
2890 // Check for InnerClasses tag | |
2891 if (parsed_innerclasses_attribute) { | |
2892 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
2893 } else { | |
2894 parsed_innerclasses_attribute = true; | |
2895 } | |
5967
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diff
changeset
|
2896 inner_classes_attribute_start = cfs->get_u1_buffer(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2897 inner_classes_attribute_length = attribute_length; |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2898 cfs->skip_u1(inner_classes_attribute_length, CHECK); |
0 | 2899 } else if (tag == vmSymbols::tag_synthetic()) { |
2900 // Check for Synthetic tag | |
2901 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
2902 if (attribute_length != 0) { | |
2903 classfile_parse_error( | |
2904 "Invalid Synthetic classfile attribute length %u in class file %s", | |
2905 attribute_length, CHECK); | |
2906 } | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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diff
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|
2907 parse_classfile_synthetic_attribute(cp, CHECK); |
0 | 2908 } else if (tag == vmSymbols::tag_deprecated()) { |
2909 // Check for Deprecatd tag - 4276120 | |
2910 if (attribute_length != 0) { | |
2911 classfile_parse_error( | |
2912 "Invalid Deprecated classfile attribute length %u in class file %s", | |
2913 attribute_length, CHECK); | |
2914 } | |
2915 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2916 if (tag == vmSymbols::tag_signature()) { | |
2917 if (attribute_length != 2) { | |
2918 classfile_parse_error( | |
2919 "Wrong Signature attribute length %u in class file %s", | |
2920 attribute_length, CHECK); | |
2921 } | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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parents:
6100
diff
changeset
|
2922 parse_classfile_signature_attribute(cp, CHECK); |
0 | 2923 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { |
2924 runtime_visible_annotations_length = attribute_length; | |
2925 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2926 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
7587 | 2927 parse_annotations(loader_data, |
2928 runtime_visible_annotations, | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2929 runtime_visible_annotations_length, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2930 cp, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2931 parsed_annotations, |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
2932 CHECK); |
0 | 2933 cfs->skip_u1(runtime_visible_annotations_length, CHECK); |
2934 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
2935 runtime_invisible_annotations_length = attribute_length; | |
2936 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2937 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2938 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
2939 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
2940 if (parsed_enclosingmethod_attribute) { | |
2941 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
2942 } else { | |
2943 parsed_enclosingmethod_attribute = true; | |
2944 } | |
2945 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.
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4755
diff
changeset
|
2946 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
|
2947 enclosing_method_method_index = cfs->get_u2_fast(); |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2948 if (enclosing_method_class_index == 0) { |
0 | 2949 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); |
2950 } | |
2951 // 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:
4755
diff
changeset
|
2952 if (!cp->is_within_bounds(enclosing_method_class_index) || |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2953 !is_klass_reference(cp, enclosing_method_class_index)) { |
0 | 2954 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
2955 } | |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2956 if (enclosing_method_method_index != 0 && |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
2957 (!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:
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diff
changeset
|
2958 !cp->tag_at(enclosing_method_method_index).is_name_and_type())) { |
0 | 2959 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); |
2960 } | |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
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diff
changeset
|
2961 } else if (tag == vmSymbols::tag_bootstrap_methods() && |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2962 _major_version >= Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2963 if (parsed_bootstrap_methods_attribute) |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2964 classfile_parse_error("Multiple BootstrapMethods attributes in class file %s", CHECK); |
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
2965 parsed_bootstrap_methods_attribute = true; |
6725
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coleenp
parents:
6266
diff
changeset
|
2966 parse_classfile_bootstrap_methods_attribute(loader_data, cp, attribute_length, CHECK); |
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2967 } else if (tag == vmSymbols::tag_runtime_visible_type_annotations()) { |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2968 runtime_visible_type_annotations_length = attribute_length; |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2969 runtime_visible_type_annotations = cfs->get_u1_buffer(); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2970 assert(runtime_visible_type_annotations != NULL, "null visible type annotations"); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2971 // No need for the VM to parse Type annotations |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2972 cfs->skip_u1(runtime_visible_type_annotations_length, CHECK); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
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diff
changeset
|
2973 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_type_annotations()) { |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2974 runtime_invisible_type_annotations_length = attribute_length; |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2975 runtime_invisible_type_annotations = cfs->get_u1_buffer(); |
35431a769282
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stefank
parents:
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diff
changeset
|
2976 assert(runtime_invisible_type_annotations != NULL, "null invisible type annotations"); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2977 cfs->skip_u1(runtime_invisible_type_annotations_length, CHECK); |
0 | 2978 } else { |
2979 // Unknown attribute | |
2980 cfs->skip_u1(attribute_length, CHECK); | |
2981 } | |
2982 } else { | |
2983 // Unknown attribute | |
2984 cfs->skip_u1(attribute_length, CHECK); | |
2985 } | |
2986 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2987 AnnotationArray* annotations = assemble_annotations(loader_data, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2988 runtime_visible_annotations, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2989 runtime_visible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2990 runtime_invisible_annotations, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2991 runtime_invisible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
2992 CHECK); |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
2993 set_class_annotations(annotations); |
7457
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2994 AnnotationArray* type_annotations = assemble_annotations(loader_data, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2995 runtime_visible_type_annotations, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2996 runtime_visible_type_annotations_length, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2997 runtime_invisible_type_annotations, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2998 runtime_invisible_type_annotations_length, |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
2999 CHECK); |
35431a769282
8004823: Add VM support for type annotation reflection
stefank
parents:
7187
diff
changeset
|
3000 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
|
3001 |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3002 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
|
3003 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
|
3004 loader_data, |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3005 inner_classes_attribute_start, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3006 parsed_innerclasses_attribute, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3007 enclosing_method_class_index, |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3008 enclosing_method_method_index, |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3009 cp, CHECK); |
5967
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3010 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
|
3011 guarantee_property( |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3012 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
|
3013 "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
|
3014 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3015 } |
f7c4174b33ba
7109878: The instanceKlass EnclosingMethhod attribute fields can be folded into the _inner_class field.
jiangli
parents:
4755
diff
changeset
|
3016 |
2011
dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
jrose
parents:
1972
diff
changeset
|
3017 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
|
3018 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
|
3019 "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
|
3020 } |
0 | 3021 } |
3022 | |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3023 void ClassFileParser::apply_parsed_class_attributes(instanceKlassHandle k) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3024 if (_synthetic_flag) |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3025 k->set_is_synthetic(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3026 if (_sourcefile != NULL) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3027 _sourcefile->increment_refcount(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3028 k->set_source_file_name(_sourcefile); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3029 } |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3030 if (_generic_signature != NULL) { |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3031 _generic_signature->increment_refcount(); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3032 k->set_generic_signature(_generic_signature); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3033 } |
6226 | 3034 if (_sde_buffer != NULL) { |
3035 k->set_source_debug_extension(_sde_buffer, _sde_length); | |
3036 } | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3037 k->set_inner_classes(_inner_classes); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3038 if (_annotations != NULL) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3039 k->annotations()->set_class_annotations(_annotations); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3040 } |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
parents:
6100
diff
changeset
|
3041 } |
0 | 3042 |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3043 AnnotationArray* ClassFileParser::assemble_annotations(ClassLoaderData* loader_data, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3044 u1* runtime_visible_annotations, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3045 int runtime_visible_annotations_length, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3046 u1* runtime_invisible_annotations, |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6735
diff
changeset
|
3047 int runtime_invisible_annotations_length, TRAPS) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3048 AnnotationArray* annotations = NULL; |
0 | 3049 if (runtime_visible_annotations != NULL || |
3050 runtime_invisible_annotations != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3051 annotations = MetadataFactory::new_array<u1>(loader_data, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3052 runtime_visible_annotations_length + |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3053 runtime_invisible_annotations_length, |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3054 CHECK_(annotations)); |
0 | 3055 if (runtime_visible_annotations != NULL) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3056 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
|
3057 annotations->at_put(i, runtime_visible_annotations[i]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3058 } |
0 | 3059 } |
3060 if (runtime_invisible_annotations != NULL) { | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3061 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
|
3062 int append = runtime_visible_annotations_length+i; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3063 annotations->at_put(append, runtime_invisible_annotations[i]); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
3064 } |
0 | 3065 } |
3066 } | |
3067 return annotations; | |
3068 } | |
3069 | |
3070 | |
6934 | 3071 #ifndef PRODUCT |
3072 static void parseAndPrintGenericSignatures( | |
3073 instanceKlassHandle this_klass, TRAPS) { | |
3074 assert(ParseAllGenericSignatures == true, "Shouldn't call otherwise"); | |
3075 ResourceMark rm; | |
3076 | |
3077 if (this_klass->generic_signature() != NULL) { | |
3078 using namespace generic; | |
3079 ClassDescriptor* spec = ClassDescriptor::parse_generic_signature(this_klass(), CHECK); | |
3080 | |
3081 tty->print_cr("Parsing %s", this_klass->generic_signature()->as_C_string()); | |
3082 spec->print_on(tty); | |
3083 | |
3084 for (int i = 0; i < this_klass->methods()->length(); ++i) { | |
3085 Method* m = this_klass->methods()->at(i); | |
3086 MethodDescriptor* method_spec = MethodDescriptor::parse_generic_signature(m, spec); | |
3087 Symbol* sig = m->generic_signature(); | |
3088 if (sig == NULL) { | |
3089 sig = m->signature(); | |
3090 } | |
3091 tty->print_cr("Parsing %s", sig->as_C_string()); | |
3092 method_spec->print_on(tty); | |
3093 } | |
3094 } | |
3095 } | |
3096 #endif // ndef PRODUCT | |
3097 | |
3098 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3099 instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name, |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3100 ClassLoaderData* loader_data, |
0 | 3101 Handle protection_domain, |
710 | 3102 KlassHandle host_klass, |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3103 GrowableArray<Handle>* cp_patches, |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3104 TempNewSymbol& parsed_name, |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
3105 bool verify, |
0 | 3106 TRAPS) { |
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
coleenp
parents:
7457
diff
changeset
|
3107 |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3108 // When a retransformable agent is attached, JVMTI caches the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3109 // class bytes that existed before the first retransformation. |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3110 // If RedefineClasses() was used before the retransformable |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3111 // agent attached, then the cached class bytes may not be the |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
dcubed
parents:
3938
diff
changeset
|
3112 // original class bytes. |
0 | 3113 unsigned char *cached_class_file_bytes = NULL; |
3114 jint cached_class_file_length; | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents:
6983
diff
changeset
|
3115 Handle class_loader(THREAD, loader_data->class_loader()); |
6934 | 3116 bool has_default_methods = false; |
3117 ResourceMark rm(THREAD); | |
0 | 3118 |
3119 ClassFileStream* cfs = stream(); | |
3120 // Timing | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3121 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
|
3122 JavaThread* jt = (JavaThread*) THREAD; |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3123 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3124 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3125 ClassLoader::perf_class_parse_selftime(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3126 NULL, |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
3127 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
|
3128 jt->get_thread_stat()->perf_timers_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
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diff
changeset
|
3129 PerfClassTraceTime::PARSE_CLASS); |
0 | 3130 |
6222
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6711908: JVM needs direct access to some annotations
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|
3131 init_parsed_class_attributes(); |
0 | 3132 |
3133 if (JvmtiExport::should_post_class_file_load_hook()) { | |
4751
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diff
changeset
|
3134 // 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
|
3135 // 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
|
3136 // 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
|
3137 // 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
|
3138 // avoid the bug described by 7126851. |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3139 JvmtiThreadState *state = jt->jvmti_thread_state(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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4731
diff
changeset
|
3140 if (state != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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diff
changeset
|
3141 KlassHandle *h_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
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diff
changeset
|
3142 state->get_class_being_redefined(); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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diff
changeset
|
3143 if (h_class_being_redefined != NULL) { |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
parents:
4731
diff
changeset
|
3144 instanceKlassHandle ikh_class_being_redefined = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
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parents:
4731
diff
changeset
|
3145 instanceKlassHandle(THREAD, (*h_class_being_redefined)()); |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
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diff
changeset
|
3146 cached_class_file_bytes = |
5b58979183f9
7127032: fix for 7122253 adds a JvmtiThreadState earlier than necessary
dcubed
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diff
changeset
|
3147 ikh_class_being_redefined->get_cached_class_file_bytes(); |
5b58979183f9
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diff
changeset
|
3148 cached_class_file_length = |
5b58979183f9
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diff
changeset
|
3149 ikh_class_being_redefined->get_cached_class_file_len(); |
5b58979183f9
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diff
changeset
|
3150 } |
4731
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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diff
changeset
|
3151 } |
4ceaf61479fc
7122253: Instrumentation.retransformClasses() leaks class bytes
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changeset
|
3152 |
0 | 3153 unsigned char* ptr = cfs->buffer(); |
3154 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
3155 | |
7185
90273fc0a981
8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
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6983
diff
changeset
|
3156 JvmtiExport::post_class_file_load_hook(name, class_loader(), protection_domain, |
0 | 3157 &ptr, &end_ptr, |
3158 &cached_class_file_bytes, | |
3159 &cached_class_file_length); | |
3160 | |
3161 if (ptr != cfs->buffer()) { | |
3162 // JVMTI agent has modified class file data. | |
3163 // Set new class file stream using JVMTI agent modified | |
3164 // class file data. | |
3165 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
3166 set_stream(cfs); | |
3167 } | |
3168 } | |
3169 | |
710 | 3170 _host_klass = host_klass; |
431
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jrose
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196
diff
changeset
|
3171 _cp_patches = cp_patches; |
0 | 3172 |
3173 instanceKlassHandle nullHandle; | |
3174 | |
3175 // 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
|
3176 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
0 | 3177 |
3178 // Set the verify flag in stream | |
3179 cfs->set_verify(_need_verify); | |
3180 | |
3181 // Save the class file name for easier error message printing. | |
2177
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|
3182 _class_name = (name != NULL) ? name : vmSymbols::unknown_class_name(); |
0 | 3183 |
3184 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
3185 // Magic value | |
3186 u4 magic = cfs->get_u4_fast(); | |
3187 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
3188 "Incompatible magic value %u in class file %s", | |
3189 magic, CHECK_(nullHandle)); | |
3190 | |
3191 // Version numbers | |
3192 u2 minor_version = cfs->get_u2_fast(); | |
3193 u2 major_version = cfs->get_u2_fast(); | |
3194 | |
3195 // Check version numbers - we check this even with verifier off | |
3196 if (!is_supported_version(major_version, minor_version)) { | |
2177
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diff
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|
3197 if (name == NULL) { |
0 | 3198 Exceptions::fthrow( |
3199 THREAD_AND_LOCATION, | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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changeset
|
3200 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 3201 "Unsupported major.minor version %u.%u", |
3202 major_version, | |
3203 minor_version); | |
3204 } else { | |
3205 ResourceMark rm(THREAD); | |
3206 Exceptions::fthrow( | |
3207 THREAD_AND_LOCATION, | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2085
diff
changeset
|
3208 vmSymbols::java_lang_UnsupportedClassVersionError(), |
0 | 3209 "%s : Unsupported major.minor version %u.%u", |
3210 name->as_C_string(), | |
3211 major_version, | |
3212 minor_version); | |
3213 } | |
3214 return nullHandle; | |
3215 } | |
3216 | |
3217 _major_version = major_version; | |
3218 _minor_version = minor_version; | |
3219 | |
3220 | |
3221 // Check if verification needs to be relaxed for this class file | |
3222 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
3223 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
3224 | |
3225 // Constant pool | |
6725
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changeset
|
3226 constantPoolHandle cp = parse_constant_pool(loader_data, CHECK_(nullHandle)); |
2177
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|
3227 ConstantPoolCleaner error_handler(cp); // set constant pool to be cleaned up. |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
3228 |
0 | 3229 int cp_size = cp->length(); |
3230 | |
3231 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
3232 | |
3233 // Access flags | |
3234 AccessFlags access_flags; | |
3235 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
3236 | |
3237 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
3238 // Set abstract bit for old class files for backward compatibility | |
3239 flags |= JVM_ACC_ABSTRACT; | |
3240 } | |
3241 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
3242 access_flags.set_flags(flags); | |
3243 | |
3244 // This class and superclass | |
3245 instanceKlassHandle super_klass; | |
3246 u2 this_class_index = cfs->get_u2_fast(); | |
3247 check_property( | |
3248 valid_cp_range(this_class_index, cp_size) && | |
3249 cp->tag_at(this_class_index).is_unresolved_klass(), | |
3250 "Invalid this class index %u in constant pool in class file %s", | |
3251 this_class_index, CHECK_(nullHandle)); | |
3252 | |
2177
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|
3253 Symbol* class_name = cp->unresolved_klass_at(this_class_index); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3254 assert(class_name != NULL, "class_name can't be null"); |
0 | 3255 |
3256 // It's important to set parsed_name *before* resolving the super class. | |
3257 // (it's used for cleanup by the caller if parsing fails) | |
3258 parsed_name = class_name; | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
3259 // parsed_name is returned and can be used if there's an error, so add to |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3260 // its reference count. Caller will decrement the refcount. |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3261 parsed_name->increment_refcount(); |
0 | 3262 |
3263 // Update _class_name which could be null previously to be class_name | |
3264 _class_name = class_name; | |
3265 | |
3266 // Don't need to check whether this class name is legal or not. | |
3267 // It has been checked when constant pool is parsed. | |
3268 // However, make sure it is not an array type. | |
3269 if (_need_verify) { | |
3270 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
3271 "Bad class name in class file %s", | |
3272 CHECK_(nullHandle)); | |
3273 } | |
3274 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3275 Klass* preserve_this_klass; // for storing result across HandleMark |
0 | 3276 |
3277 // release all handles when parsing is done | |
3278 { HandleMark hm(THREAD); | |
3279 | |
3280 // Checks if name in class file matches requested name | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3281 if (name != NULL && class_name != name) { |
0 | 3282 ResourceMark rm(THREAD); |
3283 Exceptions::fthrow( | |
3284 THREAD_AND_LOCATION, | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2085
diff
changeset
|
3285 vmSymbols::java_lang_NoClassDefFoundError(), |
0 | 3286 "%s (wrong name: %s)", |
3287 name->as_C_string(), | |
3288 class_name->as_C_string() | |
3289 ); | |
3290 return nullHandle; | |
3291 } | |
3292 | |
3293 if (TraceClassLoadingPreorder) { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3294 tty->print("[Loading %s", name->as_klass_external_name()); |
0 | 3295 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); |
3296 tty->print_cr("]"); | |
3297 } | |
3298 | |
3299 u2 super_class_index = cfs->get_u2_fast(); | |
3300 if (super_class_index == 0) { | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2085
diff
changeset
|
3301 check_property(class_name == vmSymbols::java_lang_Object(), |
0 | 3302 "Invalid superclass index %u in class file %s", |
3303 super_class_index, | |
3304 CHECK_(nullHandle)); | |
3305 } else { | |
3306 check_property(valid_cp_range(super_class_index, cp_size) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
3307 is_klass_reference(cp, super_class_index), |
0 | 3308 "Invalid superclass index %u in class file %s", |
3309 super_class_index, | |
3310 CHECK_(nullHandle)); | |
3311 // The class name should be legal because it is checked when parsing constant pool. | |
3312 // However, make sure it is not an array type. | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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196
diff
changeset
|
3313 bool is_array = false; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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diff
changeset
|
3314 if (cp->tag_at(super_class_index).is_klass()) { |
a45484ea312d
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196
diff
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|
3315 super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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196
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changeset
|
3316 if (_need_verify) |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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196
diff
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|
3317 is_array = super_klass->oop_is_array(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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diff
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|
3318 } else if (_need_verify) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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196
diff
changeset
|
3319 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
a45484ea312d
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jrose
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|
3320 } |
0 | 3321 if (_need_verify) { |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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|
3322 guarantee_property(!is_array, |
0 | 3323 "Bad superclass name in class file %s", CHECK_(nullHandle)); |
3324 } | |
3325 } | |
3326 | |
3327 // Interfaces | |
3328 u2 itfs_len = cfs->get_u2_fast(); | |
6725
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|
3329 Array<Klass*>* local_interfaces; |
0 | 3330 if (itfs_len == 0) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6266
diff
changeset
|
3331 local_interfaces = Universe::the_empty_klass_array(); |
0 | 3332 } else { |
6934 | 3333 local_interfaces = parse_interfaces( |
3334 cp, itfs_len, loader_data, protection_domain, _class_name, | |
3335 &has_default_methods, CHECK_(nullHandle)); | |
0 | 3336 } |
3337 | |
4744
cd5d8cafcc84
7123315: instanceKlass::_static_oop_field_count and instanceKlass::_java_fields_count should be u2 type.
jiangli
parents:
3938
diff
changeset
|
3338 u2 java_fields_count = 0; |
0 | 3339 // Fields (offsets are filled in later) |
3938 | 3340 FieldAllocationCount fac; |
6725
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changeset
|
3341 Array<AnnotationArray*>* fields_annotations = NULL; |
7457
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7187
diff
changeset
|
3342 Array<AnnotationArray*>* fields_type_annotations = NULL; |
6725
da91efe96a93
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coleenp
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6266
diff
changeset
|
3343 Array<u2>* fields = parse_fields(loader_data, class_name, cp, access_flags.is_interface(), &fac, &fields_annotations, |
7457
35431a769282
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7187
diff
changeset
|
3344 &fields_type_annotations, |
3938 | 3345 &java_fields_count, |
3346 CHECK_(nullHandle)); | |
0 | 3347 // Methods |
3348 bool has_final_method = false; | |
3349 AccessFlags promoted_flags; | |
3350 promoted_flags.set_flags(0); | |
7611
ff0a7943fd29
8005994: Method annotations are allocated unnecessarily during class file parsing
stefank
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7462
diff
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|
3351 |
6725
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changeset
|
3352 Array<AnnotationArray*>* methods_annotations = NULL; |
da91efe96a93
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|
3353 Array<AnnotationArray*>* methods_parameter_annotations = NULL; |
da91efe96a93
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|
3354 Array<AnnotationArray*>* methods_default_annotations = NULL; |
7457
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changeset
|
3355 Array<AnnotationArray*>* methods_type_annotations = NULL; |
6725
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|
3356 Array<Method*>* methods = parse_methods(loader_data, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6735
diff
changeset
|
3357 cp, access_flags.is_interface(), |
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6735
diff
changeset
|
3358 &promoted_flags, |
d8ce2825b193
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6735
diff
changeset
|
3359 &has_final_method, |
d8ce2825b193
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coleenp
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6735
diff
changeset
|
3360 &methods_annotations, |
d8ce2825b193
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6735
diff
changeset
|
3361 &methods_parameter_annotations, |
d8ce2825b193
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|
3362 &methods_default_annotations, |
7457
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|
3363 &methods_type_annotations, |
6934 | 3364 &has_default_methods, |
6831
d8ce2825b193
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diff
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|
3365 CHECK_(nullHandle)); |
0 | 3366 |
6222
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
changeset
|
3367 // Additional attributes |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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diff
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|
3368 ClassAnnotationCollector parsed_annotations; |
6725
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coleenp
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changeset
|
3369 parse_classfile_attributes(loader_data, cp, &parsed_annotations, CHECK_(nullHandle)); |
6222
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6711908: JVM needs direct access to some annotations
jrose
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|
3370 |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
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changeset
|
3371 // Make sure this is the end of class file stream |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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6100
diff
changeset
|
3372 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); |
6d8f36bcef55
6711908: JVM needs direct access to some annotations
jrose
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|
3373 |
0 | 3374 // We check super class after class file is parsed and format is checked |
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|
3375 if (super_class_index > 0 && super_klass.is_null()) { |
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|
3376 Symbol* sk = cp->klass_name_at(super_class_index); |
0 | 3377 if (access_flags.is_interface()) { |
3378 // Before attempting to resolve the superclass, check for class format | |
3379 // errors not checked yet. | |
2177
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|
3380 guarantee_property(sk == vmSymbols::java_lang_Object(), |
0 | 3381 "Interfaces must have java.lang.Object as superclass in class file %s", |
3382 CHECK_(nullHandle)); | |
3383 } | |
6831
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diff
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|
3384 Klass* k = SystemDictionary::resolve_super_or_fail(class_name, sk, |
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diff
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|
3385 class_loader, |
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coleenp
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diff
changeset
|
3386 protection_domain, |
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diff
changeset
|
3387 true, |
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diff
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|
3388 CHECK_(nullHandle)); |
875
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6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
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diff
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|
3389 |
0 | 3390 KlassHandle kh (THREAD, k); |
3391 super_klass = instanceKlassHandle(THREAD, kh()); | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
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diff
changeset
|
3392 } |
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|
3393 if (super_klass.not_null()) { |
6934 | 3394 |
3395 if (super_klass->has_default_methods()) { | |
3396 has_default_methods = true; | |
3397 } | |
3398 | |
0 | 3399 if (super_klass->is_interface()) { |
3400 ResourceMark rm(THREAD); | |
3401 Exceptions::fthrow( | |
3402 THREAD_AND_LOCATION, | |
2177
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|
3403 vmSymbols::java_lang_IncompatibleClassChangeError(), |
0 | 3404 "class %s has interface %s as super class", |
3405 class_name->as_klass_external_name(), | |
3406 super_klass->external_name() | |
3407 ); | |
3408 return nullHandle; | |
3409 } | |
3410 // Make sure super class is not final | |
3411 if (super_klass->is_final()) { | |
3412 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
3413 } | |
3414 } | |
3415 | |
3416 // Compute the transitive list of all unique interfaces implemented by this class | |
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da91efe96a93
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diff
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|
3417 Array<Klass*>* transitive_interfaces = compute_transitive_interfaces(loader_data, super_klass, local_interfaces, CHECK_(nullHandle)); |
0 | 3418 |
3419 // sort methods | |
6725
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3420 Array<int>* method_ordering = sort_methods(loader_data, |
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diff
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|
3421 methods, |
6831
d8ce2825b193
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diff
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|
3422 methods_annotations, |
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diff
changeset
|
3423 methods_parameter_annotations, |
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coleenp
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diff
changeset
|
3424 methods_default_annotations, |
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35431a769282
8004823: Add VM support for type annotation reflection
stefank
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7187
diff
changeset
|
3425 methods_type_annotations, |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
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|
3426 CHECK_(nullHandle)); |
0 | 3427 |
3428 // promote flags from parse_methods() to the klass' flags | |
3429 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
3430 | |
3431 // Size of Java vtable (in words) | |
3432 int vtable_size = 0; | |
3433 int itable_size = 0; | |
3434 int num_miranda_methods = 0; | |
3435 | |
6934 | 3436 GrowableArray<Method*> all_mirandas(20); |
3437 | |
3438 klassVtable::compute_vtable_size_and_num_mirandas( | |
3439 &vtable_size, &num_miranda_methods, &all_mirandas, super_klass(), methods, | |
3440 access_flags, class_loader, class_name, local_interfaces, | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
3441 CHECK_(nullHandle)); |
0 | 3442 |
3443 // Size of Java itable (in words) | |
3444 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
3445 | |
7587 | 3446 // get the padding width from the option |
3447 // TODO: Ask VM about specific CPU we are running on | |
3448 int pad_size = ContendedPaddingWidth; | |
3449 | |
0 | 3450 // Field size and offset computation |
3451 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
3452 #ifndef PRODUCT | |
3453 int orig_nonstatic_field_size = 0; | |
3454 #endif | |
3455 int next_static_oop_offset; | |
3456 int next_static_double_offset; | |
3457 int next_static_word_offset; | |
3458 int next_static_short_offset; | |
3459 int next_static_byte_offset; | |
7587 | 3460 int next_static_padded_offset; |
0 | 3461 int next_nonstatic_oop_offset; |
3462 int next_nonstatic_double_offset; | |
3463 int next_nonstatic_word_offset; | |
3464 int next_nonstatic_short_offset; | |
3465 int next_nonstatic_byte_offset; | |
3466 int next_nonstatic_type_offset; | |
3467 int first_nonstatic_oop_offset; | |
3468 int first_nonstatic_field_offset; | |
3469 int next_nonstatic_field_offset; | |
7587 | 3470 int next_nonstatic_padded_offset; |
3471 | |
3472 // Count the contended fields by type. | |
3473 int static_contended_count = 0; | |
3474 int nonstatic_contended_count = 0; | |
3475 FieldAllocationCount fac_contended; | |
3476 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
3477 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); | |
3478 if (fs.is_contended()) { | |
3479 fac_contended.count[atype]++; | |
3480 if (fs.access_flags().is_static()) { | |
3481 static_contended_count++; | |
3482 } else { | |
3483 nonstatic_contended_count++; | |
3484 } | |
3485 } | |
3486 } | |
3487 int contended_count = static_contended_count + nonstatic_contended_count; | |
3488 | |
0 | 3489 |
3490 // Calculate the starting byte offsets | |
6735
aed758eda82a
7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents:
6725
diff
changeset
|
3491 next_static_oop_offset = InstanceMirrorKlass::offset_of_static_fields(); |
7587 | 3492 |
3493 // class is contended, pad before all the fields | |
3494 if (parsed_annotations.is_contended()) { | |
3495 next_static_oop_offset += pad_size; | |
3496 } | |
3497 | |
0 | 3498 next_static_double_offset = next_static_oop_offset + |
7587 | 3499 ((fac.count[STATIC_OOP] - fac_contended.count[STATIC_OOP]) * heapOopSize); |
3938 | 3500 if ( fac.count[STATIC_DOUBLE] && |
0 | 3501 (Universe::field_type_should_be_aligned(T_DOUBLE) || |
3502 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
3503 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
3504 } | |
3505 | |
3506 next_static_word_offset = next_static_double_offset + | |
7587 | 3507 ((fac.count[STATIC_DOUBLE] - fac_contended.count[STATIC_DOUBLE]) * BytesPerLong); |
0 | 3508 next_static_short_offset = next_static_word_offset + |
7587 | 3509 ((fac.count[STATIC_WORD] - fac_contended.count[STATIC_WORD]) * BytesPerInt); |
0 | 3510 next_static_byte_offset = next_static_short_offset + |
7587 | 3511 ((fac.count[STATIC_SHORT] - fac_contended.count[STATIC_SHORT]) * BytesPerShort); |
3512 next_static_padded_offset = next_static_byte_offset + | |
3513 ((fac.count[STATIC_BYTE] - fac_contended.count[STATIC_BYTE]) * 1); | |
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diff
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|
3514 |
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|
3515 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
437d03ea40b1
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kvn
parents:
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diff
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|
3516 nonstatic_field_size * heapOopSize; |
7587 | 3517 |
3518 // class is contended, pad before all the fields | |
3519 if (parsed_annotations.is_contended()) { | |
3520 first_nonstatic_field_offset += pad_size; | |
3521 } | |
3522 | |
0 | 3523 next_nonstatic_field_offset = first_nonstatic_field_offset; |
3524 | |
7587 | 3525 unsigned int nonstatic_double_count = fac.count[NONSTATIC_DOUBLE] - fac_contended.count[NONSTATIC_DOUBLE]; |
3526 unsigned int nonstatic_word_count = fac.count[NONSTATIC_WORD] - fac_contended.count[NONSTATIC_WORD]; | |
3527 unsigned int nonstatic_short_count = fac.count[NONSTATIC_SHORT] - fac_contended.count[NONSTATIC_SHORT]; | |
3528 unsigned int nonstatic_byte_count = fac.count[NONSTATIC_BYTE] - fac_contended.count[NONSTATIC_BYTE]; | |
3529 unsigned int nonstatic_oop_count = fac.count[NONSTATIC_OOP] - fac_contended.count[NONSTATIC_OOP]; | |
0 | 3530 |
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|
3531 bool super_has_nonstatic_fields = |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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diff
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3532 (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
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diff
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3533 bool has_nonstatic_fields = super_has_nonstatic_fields || |
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3534 ((nonstatic_double_count + nonstatic_word_count + |
ba764ed4b6f2
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92
diff
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|
3535 nonstatic_short_count + nonstatic_byte_count + |
ba764ed4b6f2
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92
diff
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|
3536 nonstatic_oop_count) != 0); |
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diff
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|
3537 |
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|
3538 |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
changeset
|
3539 // Prepare list of oops for oop map generation. |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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938
diff
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|
3540 int* nonstatic_oop_offsets; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
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diff
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|
3541 unsigned int* nonstatic_oop_counts; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3542 unsigned int nonstatic_oop_map_count = 0; |
0 | 3543 |
3544 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3545 THREAD, int, nonstatic_oop_count + 1); |
938 | 3546 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3547 THREAD, unsigned int, nonstatic_oop_count + 1); |
0 | 3548 |
3938 | 3549 first_nonstatic_oop_offset = 0; // will be set for first oop field |
0 | 3550 |
3551 #ifndef PRODUCT | |
3552 if( PrintCompactFieldsSavings ) { | |
3553 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
113
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diff
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|
3554 (nonstatic_oop_count * heapOopSize); |
0 | 3555 if ( nonstatic_double_count > 0 ) { |
3556 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
3557 } | |
3558 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3559 (nonstatic_double_count * BytesPerLong); | |
3560 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3561 (nonstatic_word_count * BytesPerInt); | |
3562 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3563 (nonstatic_short_count * BytesPerShort); | |
3564 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
165
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6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
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diff
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|
3565 nonstatic_byte_count ), heapOopSize ); |
0 | 3566 orig_nonstatic_field_size = nonstatic_field_size + |
165
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diff
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|
3567 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
0 | 3568 } |
3569 #endif | |
3570 bool compact_fields = CompactFields; | |
3571 int allocation_style = FieldsAllocationStyle; | |
1366
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
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1144
diff
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|
3572 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
b9d85fcdf743
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kvn
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1144
diff
changeset
|
3573 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
0 | 3574 allocation_style = 1; // Optimistic |
3575 } | |
3576 | |
3577 // The next classes have predefined hard-coded fields offsets | |
3578 // (see in JavaClasses::compute_hard_coded_offsets()). | |
3579 // Use default fields allocation order for them. | |
3580 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && | |
2177
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|
3581 (class_name == vmSymbols::java_lang_AssertionStatusDirectives() || |
3582bf76420e
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diff
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|
3582 class_name == vmSymbols::java_lang_Class() || |
3582bf76420e
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|
3583 class_name == vmSymbols::java_lang_ClassLoader() || |
3582bf76420e
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diff
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|
3584 class_name == vmSymbols::java_lang_ref_Reference() || |
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|
3585 class_name == vmSymbols::java_lang_ref_SoftReference() || |
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diff
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|
3586 class_name == vmSymbols::java_lang_StackTraceElement() || |
3582bf76420e
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diff
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|
3587 class_name == vmSymbols::java_lang_String() || |
3582bf76420e
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diff
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|
3588 class_name == vmSymbols::java_lang_Throwable() || |
3582bf76420e
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diff
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|
3589 class_name == vmSymbols::java_lang_Boolean() || |
3582bf76420e
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|
3590 class_name == vmSymbols::java_lang_Character() || |
3582bf76420e
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|
3591 class_name == vmSymbols::java_lang_Float() || |
3582bf76420e
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|
3592 class_name == vmSymbols::java_lang_Double() || |
3582bf76420e
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|
3593 class_name == vmSymbols::java_lang_Byte() || |
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|
3594 class_name == vmSymbols::java_lang_Short() || |
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|
3595 class_name == vmSymbols::java_lang_Integer() || |
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|
3596 class_name == vmSymbols::java_lang_Long())) { |
0 | 3597 allocation_style = 0; // Allocate oops first |
3598 compact_fields = false; // Don't compact fields | |
3599 } | |
3600 | |
3601 if( allocation_style == 0 ) { | |
7587 | 3602 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes, padded fields |
0 | 3603 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
3604 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
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|
3605 (nonstatic_oop_count * heapOopSize); |
0 | 3606 } else if( allocation_style == 1 ) { |
7587 | 3607 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops, padded fields |
0 | 3608 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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|
3609 } else if( allocation_style == 2 ) { |
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diff
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|
3610 // Fields allocation: oops fields in super and sub classes are together. |
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diff
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|
3611 if( nonstatic_field_size > 0 && super_klass() != NULL && |
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diff
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|
3612 super_klass->nonstatic_oop_map_size() > 0 ) { |
3786
498c6cf70f7e
7058036: FieldsAllocationStyle=2 does not work in 32-bit VM
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3245
diff
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|
3613 int map_count = super_klass->nonstatic_oop_map_count(); |
1366
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diff
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|
3614 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
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diff
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|
3615 OopMapBlock* last_map = first_map + map_count - 1; |
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diff
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|
3616 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
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diff
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|
3617 if (next_offset == next_nonstatic_field_offset) { |
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diff
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|
3618 allocation_style = 0; // allocate oops first |
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diff
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|
3619 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
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diff
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|
3620 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
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diff
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|
3621 (nonstatic_oop_count * heapOopSize); |
b9d85fcdf743
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1144
diff
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|
3622 } |
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diff
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|
3623 } |
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diff
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|
3624 if( allocation_style == 2 ) { |
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3625 allocation_style = 1; // allocate oops last |
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3626 next_nonstatic_double_offset = next_nonstatic_field_offset; |
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3627 } |
0 | 3628 } else { |
3629 ShouldNotReachHere(); | |
3630 } | |
3631 | |
3632 int nonstatic_oop_space_count = 0; | |
3633 int nonstatic_word_space_count = 0; | |
3634 int nonstatic_short_space_count = 0; | |
3635 int nonstatic_byte_space_count = 0; | |
3636 int nonstatic_oop_space_offset; | |
3637 int nonstatic_word_space_offset; | |
3638 int nonstatic_short_space_offset; | |
3639 int nonstatic_byte_space_offset; | |
3640 | |
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3641 if( nonstatic_double_count > 0 ) { |
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3642 int offset = next_nonstatic_double_offset; |
0 | 3643 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
3644 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
3645 // Allocate available fields into the gap before double field. | |
3646 int length = next_nonstatic_double_offset - offset; | |
3647 assert(length == BytesPerInt, ""); | |
3648 nonstatic_word_space_offset = offset; | |
3649 if( nonstatic_word_count > 0 ) { | |
3650 nonstatic_word_count -= 1; | |
3651 nonstatic_word_space_count = 1; // Only one will fit | |
3652 length -= BytesPerInt; | |
3653 offset += BytesPerInt; | |
3654 } | |
3655 nonstatic_short_space_offset = offset; | |
3656 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
3657 nonstatic_short_count -= 1; | |
3658 nonstatic_short_space_count += 1; | |
3659 length -= BytesPerShort; | |
3660 offset += BytesPerShort; | |
3661 } | |
3662 nonstatic_byte_space_offset = offset; | |
3663 while( length > 0 && nonstatic_byte_count > 0 ) { | |
3664 nonstatic_byte_count -= 1; | |
3665 nonstatic_byte_space_count += 1; | |
3666 length -= 1; | |
3667 } | |
3668 // Allocate oop field in the gap if there are no other fields for that. | |
3669 nonstatic_oop_space_offset = offset; | |
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3670 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
0 | 3671 allocation_style != 0 ) { // when oop fields not first |
3672 nonstatic_oop_count -= 1; | |
3673 nonstatic_oop_space_count = 1; // Only one will fit | |
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3674 length -= heapOopSize; |
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3675 offset += heapOopSize; |
0 | 3676 } |
3677 } | |
3678 } | |
3679 | |
3680 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3681 (nonstatic_double_count * BytesPerLong); | |
3682 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3683 (nonstatic_word_count * BytesPerInt); | |
3684 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3685 (nonstatic_short_count * BytesPerShort); | |
7587 | 3686 next_nonstatic_padded_offset = next_nonstatic_byte_offset + |
3687 nonstatic_byte_count; | |
3688 | |
3689 // let oops jump before padding with this allocation style | |
3690 if( allocation_style == 1 ) { | |
3691 next_nonstatic_oop_offset = next_nonstatic_padded_offset; | |
0 | 3692 if( nonstatic_oop_count > 0 ) { |
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3693 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
0 | 3694 } |
7587 | 3695 next_nonstatic_padded_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
0 | 3696 } |
3697 | |
3698 // Iterate over fields again and compute correct offsets. | |
3699 // The field allocation type was temporarily stored in the offset slot. | |
3700 // oop fields are located before non-oop fields (static and non-static). | |
3938 | 3701 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { |
7587 | 3702 |
3703 // skip already laid out fields | |
3704 if (fs.is_offset_set()) continue; | |
3705 | |
3706 // contended fields are handled below | |
3707 if (fs.is_contended()) continue; | |
3708 | |
0 | 3709 int real_offset; |
7587 | 3710 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); |
3711 | |
3712 // pack the rest of the fields | |
0 | 3713 switch (atype) { |
3714 case STATIC_OOP: | |
3715 real_offset = next_static_oop_offset; | |
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3716 next_static_oop_offset += heapOopSize; |
0 | 3717 break; |
3718 case STATIC_BYTE: | |
3719 real_offset = next_static_byte_offset; | |
3720 next_static_byte_offset += 1; | |
3721 break; | |
3722 case STATIC_SHORT: | |
3723 real_offset = next_static_short_offset; | |
3724 next_static_short_offset += BytesPerShort; | |
3725 break; | |
3726 case STATIC_WORD: | |
3727 real_offset = next_static_word_offset; | |
3728 next_static_word_offset += BytesPerInt; | |
3729 break; | |
3730 case STATIC_DOUBLE: | |
3731 real_offset = next_static_double_offset; | |
3732 next_static_double_offset += BytesPerLong; | |
3733 break; | |
3734 case NONSTATIC_OOP: | |
3735 if( nonstatic_oop_space_count > 0 ) { | |
3736 real_offset = nonstatic_oop_space_offset; | |
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3737 nonstatic_oop_space_offset += heapOopSize; |
0 | 3738 nonstatic_oop_space_count -= 1; |
3739 } else { | |
3740 real_offset = next_nonstatic_oop_offset; | |
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3741 next_nonstatic_oop_offset += heapOopSize; |
0 | 3742 } |
3743 // Update oop maps | |
3744 if( nonstatic_oop_map_count > 0 && | |
3745 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
939
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3746 real_offset - |
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3747 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
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3748 heapOopSize ) { |
0 | 3749 // Extend current oop map |
938 | 3750 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
0 | 3751 } else { |
3752 // Create new oop map | |
939
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3753 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
938 | 3754 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
0 | 3755 nonstatic_oop_map_count += 1; |
3756 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
3757 first_nonstatic_oop_offset = real_offset; | |
3758 } | |
3759 } | |
3760 break; | |
3761 case NONSTATIC_BYTE: | |
3762 if( nonstatic_byte_space_count > 0 ) { | |
3763 real_offset = nonstatic_byte_space_offset; | |
3764 nonstatic_byte_space_offset += 1; | |
3765 nonstatic_byte_space_count -= 1; | |
3766 } else { | |
3767 real_offset = next_nonstatic_byte_offset; | |
3768 next_nonstatic_byte_offset += 1; | |
3769 } | |
3770 break; | |
3771 case NONSTATIC_SHORT: | |
3772 if( nonstatic_short_space_count > 0 ) { | |
3773 real_offset = nonstatic_short_space_offset; | |
3774 nonstatic_short_space_offset += BytesPerShort; | |
3775 nonstatic_short_space_count -= 1; | |
3776 } else { | |
3777 real_offset = next_nonstatic_short_offset; | |
3778 next_nonstatic_short_offset += BytesPerShort; | |
3779 } | |
3780 break; | |
3781 case NONSTATIC_WORD: | |
3782 if( nonstatic_word_space_count > 0 ) { | |
3783 real_offset = nonstatic_word_space_offset; | |
3784 nonstatic_word_space_offset += BytesPerInt; | |
3785 nonstatic_word_space_count -= 1; | |
3786 } else { | |
3787 real_offset = next_nonstatic_word_offset; | |
3788 next_nonstatic_word_offset += BytesPerInt; | |
3789 } | |
3790 break; | |
3791 case NONSTATIC_DOUBLE: | |
3792 real_offset = next_nonstatic_double_offset; | |
3793 next_nonstatic_double_offset += BytesPerLong; | |
3794 break; | |
3795 default: | |
3796 ShouldNotReachHere(); | |
3797 } | |
3938 | 3798 fs.set_offset(real_offset); |
0 | 3799 } |
3800 | |
7587 | 3801 |
3802 // Handle the contended cases. | |
3803 // | |
3804 // Each contended field should not intersect the cache line with another contended field. | |
3805 // In the absence of alignment information, we end up with pessimistically separating | |
3806 // the fields with full-width padding. | |
3807 // | |
3808 // Additionally, this should not break alignment for the fields, so we round the alignment up | |
3809 // for each field. | |
3810 if (contended_count > 0) { | |
3811 | |
3812 // if there is at least one contended field, we need to have pre-padding for them | |
3813 if (nonstatic_contended_count > 0) { | |
3814 next_nonstatic_padded_offset += pad_size; | |
3815 } | |
3816 | |
3817 // collect all contended groups | |
3818 BitMap bm(cp->size()); | |
3819 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
3820 // skip already laid out fields | |
3821 if (fs.is_offset_set()) continue; | |
3822 | |
3823 if (fs.is_contended()) { | |
3824 bm.set_bit(fs.contended_group()); | |
3825 } | |
3826 } | |
3827 | |
3828 int current_group = -1; | |
3829 while ((current_group = (int)bm.get_next_one_offset(current_group + 1)) != (int)bm.size()) { | |
3830 | |
3831 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
3832 | |
3833 // skip already laid out fields | |
3834 if (fs.is_offset_set()) continue; | |
3835 | |
3836 // skip non-contended fields and fields from different group | |
3837 if (!fs.is_contended() || (fs.contended_group() != current_group)) continue; | |
3838 | |
3839 // handle statics below | |
3840 if (fs.access_flags().is_static()) continue; | |
3841 | |
3842 int real_offset; | |
3843 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); | |
3844 | |
3845 switch (atype) { | |
3846 case NONSTATIC_BYTE: | |
3847 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, 1); | |
3848 real_offset = next_nonstatic_padded_offset; | |
3849 next_nonstatic_padded_offset += 1; | |
3850 break; | |
3851 | |
3852 case NONSTATIC_SHORT: | |
3853 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerShort); | |
3854 real_offset = next_nonstatic_padded_offset; | |
3855 next_nonstatic_padded_offset += BytesPerShort; | |
3856 break; | |
3857 | |
3858 case NONSTATIC_WORD: | |
3859 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerInt); | |
3860 real_offset = next_nonstatic_padded_offset; | |
3861 next_nonstatic_padded_offset += BytesPerInt; | |
3862 break; | |
3863 | |
3864 case NONSTATIC_DOUBLE: | |
3865 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, BytesPerLong); | |
3866 real_offset = next_nonstatic_padded_offset; | |
3867 next_nonstatic_padded_offset += BytesPerLong; | |
3868 break; | |
3869 | |
3870 case NONSTATIC_OOP: | |
3871 next_nonstatic_padded_offset = align_size_up(next_nonstatic_padded_offset, heapOopSize); | |
3872 real_offset = next_nonstatic_padded_offset; | |
3873 next_nonstatic_padded_offset += heapOopSize; | |
3874 | |
3875 // Create new oop map | |
3876 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; | |
3877 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; | |
3878 nonstatic_oop_map_count += 1; | |
3879 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
3880 first_nonstatic_oop_offset = real_offset; | |
3881 } | |
3882 break; | |
3883 | |
3884 default: | |
3885 ShouldNotReachHere(); | |
3886 } | |
3887 | |
3888 if (fs.contended_group() == 0) { | |
3889 // Contended group defines the equivalence class over the fields: | |
3890 // the fields within the same contended group are not inter-padded. | |
3891 // The only exception is default group, which does not incur the | |
3892 // equivalence, and so requires intra-padding. | |
3893 next_nonstatic_padded_offset += pad_size; | |
3894 } | |
3895 | |
3896 fs.set_offset(real_offset); | |
3897 } // for | |
3898 | |
3899 // Start laying out the next group. | |
3900 // Note that this will effectively pad the last group in the back; | |
3901 // this is expected to alleviate memory contention effects for | |
3902 // subclass fields and/or adjacent object. | |
3903 // If this was the default group, the padding is already in place. | |
3904 if (current_group != 0) { | |
3905 next_nonstatic_padded_offset += pad_size; | |
3906 } | |
3907 } | |
3908 | |
3909 // handle static fields | |
3910 | |
3911 // if there is at least one contended field, we need to have pre-padding for them | |
3912 if (static_contended_count > 0) { | |
3913 next_static_padded_offset += pad_size; | |
3914 } | |
3915 | |
3916 current_group = -1; | |
3917 while ((current_group = (int)bm.get_next_one_offset(current_group + 1)) != (int)bm.size()) { | |
3918 | |
3919 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
3920 | |
3921 // skip already laid out fields | |
3922 if (fs.is_offset_set()) continue; | |
3923 | |
3924 // skip non-contended fields and fields from different group | |
3925 if (!fs.is_contended() || (fs.contended_group() != current_group)) continue; | |
3926 | |
3927 // non-statics already handled above | |
3928 if (!fs.access_flags().is_static()) continue; | |
3929 | |
3930 int real_offset; | |
3931 FieldAllocationType atype = (FieldAllocationType) fs.allocation_type(); | |
3932 | |
3933 switch (atype) { | |
3934 | |
3935 case STATIC_BYTE: | |
3936 next_static_padded_offset = align_size_up(next_static_padded_offset, 1); | |
3937 real_offset = next_static_padded_offset; | |
3938 next_static_padded_offset += 1; | |
3939 break; | |
3940 | |
3941 case STATIC_SHORT: | |
3942 next_static_padded_offset = align_size_up(next_static_padded_offset, BytesPerShort); | |
3943 real_offset = next_static_padded_offset; | |
3944 next_static_padded_offset += BytesPerShort; | |
3945 break; | |
3946 | |
3947 case STATIC_WORD: | |
3948 next_static_padded_offset = align_size_up(next_static_padded_offset, BytesPerInt); | |
3949 real_offset = next_static_padded_offset; | |
3950 next_static_padded_offset += BytesPerInt; | |
3951 break; | |
3952 | |
3953 case STATIC_DOUBLE: | |
3954 next_static_padded_offset = align_size_up(next_static_padded_offset, BytesPerLong); | |
3955 real_offset = next_static_padded_offset; | |
3956 next_static_padded_offset += BytesPerLong; | |
3957 break; | |
3958 | |
3959 case STATIC_OOP: | |
3960 next_static_padded_offset = align_size_up(next_static_padded_offset, heapOopSize); | |
3961 real_offset = next_static_padded_offset; | |
3962 next_static_padded_offset += heapOopSize; | |
3963 break; | |
3964 | |
3965 default: | |
3966 ShouldNotReachHere(); | |
3967 } | |
3968 | |
3969 if (fs.contended_group() == 0) { | |
3970 // Contended group defines the equivalence class over the fields: | |
3971 // the fields within the same contended group are not inter-padded. | |
3972 // The only exception is default group, which does not incur the | |
3973 // equivalence, and so requires intra-padding. | |
3974 next_static_padded_offset += pad_size; | |
3975 } | |
3976 | |
3977 fs.set_offset(real_offset); | |
3978 } // for | |
3979 | |
3980 // Start laying out the next group. | |
3981 // Note that this will effectively pad the last group in the back; | |
3982 // this is expected to alleviate memory contention effects for | |
3983 // subclass fields and/or adjacent object. | |
3984 // If this was the default group, the padding is already in place. | |
3985 if (current_group != 0) { | |
3986 next_static_padded_offset += pad_size; | |
3987 } | |
3988 | |
3989 } | |
3990 | |
3991 } // handle contended | |
3992 | |
0 | 3993 // Size of instances |
3994 int instance_size; | |
3995 | |
7587 | 3996 int notaligned_offset = next_nonstatic_padded_offset; |
3997 | |
3998 // Entire class is contended, pad in the back. | |
3999 // This helps to alleviate memory contention effects for subclass fields | |
4000 // and/or adjacent object. | |
4001 if (parsed_annotations.is_contended()) { | |
4002 notaligned_offset += pad_size; | |
4003 next_static_padded_offset += pad_size; | |
4004 } | |
4005 | |
4006 int next_static_type_offset = align_size_up(next_static_padded_offset, wordSize); | |
4007 int static_field_size = (next_static_type_offset - | |
4008 InstanceMirrorKlass::offset_of_static_fields()) / wordSize; | |
4009 | |
4010 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); | |
4011 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset | |
4012 - first_nonstatic_field_offset)/heapOopSize); | |
4013 | |
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4014 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
0 | 4015 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
4016 | |
7587 | 4017 assert(instance_size == align_object_size(align_size_up( |
4018 (instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize + ((parsed_annotations.is_contended()) ? pad_size : 0)), | |
4019 wordSize) / wordSize), "consistent layout helper value"); | |
0 | 4020 |
938 | 4021 // Number of non-static oop map blocks allocated at end of klass. |
939
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4022 const unsigned int total_oop_map_count = |
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4023 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
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4024 first_nonstatic_oop_offset); |
0 | 4025 |
4026 // Compute reference type | |
4027 ReferenceType rt; | |
4028 if (super_klass() == NULL) { | |
4029 rt = REF_NONE; | |
4030 } else { | |
4031 rt = super_klass->reference_type(); | |
4032 } | |
4033 | |
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4034 // We can now create the basic Klass* for this klass |
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4035 int total_oop_map_size2 = |
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4036 InstanceKlass::nonstatic_oop_map_size(total_oop_map_count); |
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4037 |
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4038 Klass* ik = InstanceKlass::allocate_instance_klass(loader_data, |
6831
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4039 vtable_size, |
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4040 itable_size, |
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4041 static_field_size, |
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|
4042 total_oop_map_size2, |
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|
4043 rt, |
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|
4044 access_flags, |
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4045 name, |
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4046 super_klass(), |
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4047 host_klass, |
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4048 CHECK_(nullHandle)); |
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4049 |
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4050 // Add all classes to our internal class loader list here, |
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4051 // including classes in the bootstrap (NULL) class loader. |
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4052 loader_data->add_class(ik); |
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4053 |
0 | 4054 instanceKlassHandle this_klass (THREAD, ik); |
4055 | |
938 | 4056 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
4057 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
4058 "sanity"); | |
0 | 4059 |
4060 // Fill in information already parsed | |
975 | 4061 this_klass->set_should_verify_class(verify); |
0 | 4062 jint lh = Klass::instance_layout_helper(instance_size, false); |
4063 this_klass->set_layout_helper(lh); | |
4064 assert(this_klass->oop_is_instance(), "layout is correct"); | |
4065 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
4066 // Not yet: supers are done below to support the new subtype-checking fields | |
4067 //this_klass->set_super(super_klass()); | |
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4068 this_klass->set_class_loader_data(loader_data); |
0 | 4069 this_klass->set_nonstatic_field_size(nonstatic_field_size); |
975 | 4070 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
3938 | 4071 this_klass->set_static_oop_field_count(fac.count[STATIC_OOP]); |
0 | 4072 cp->set_pool_holder(this_klass()); |
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4073 error_handler.set_in_error(false); // turn off error handler for cp |
0 | 4074 this_klass->set_constants(cp()); |
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4075 this_klass->set_local_interfaces(local_interfaces); |
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4076 this_klass->set_fields(fields, java_fields_count); |
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4077 this_klass->set_methods(methods); |
0 | 4078 if (has_final_method) { |
4079 this_klass->set_has_final_method(); | |
4080 } | |
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4081 this_klass->set_method_ordering(method_ordering); |
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4082 // The InstanceKlass::_methods_jmethod_ids cache and the |
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4083 // InstanceKlass::_methods_cached_itable_indices cache are |
977
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4084 // both managed on the assumption that the initial cache |
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4085 // size is equal to the number of methods in the class. If |
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4086 // that changes, then InstanceKlass::idnum_can_increment() |
977
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4087 // has to be changed accordingly. |
0 | 4088 this_klass->set_initial_method_idnum(methods->length()); |
4089 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
6852 | 4090 if (is_anonymous()) // I am well known to myself |
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4091 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
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4092 |
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4093 // Allocate an annotation type if needed. |
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4094 if (fields_annotations != NULL || |
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4095 methods_annotations != NULL || |
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4096 methods_parameter_annotations != NULL || |
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4097 methods_default_annotations != NULL || |
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4098 fields_type_annotations != NULL || |
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4099 methods_type_annotations != NULL) { |
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4100 Annotations* anno = Annotations::allocate(loader_data, |
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4101 fields_annotations, methods_annotations, |
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4102 methods_parameter_annotations, |
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4103 methods_default_annotations, CHECK_(nullHandle)); |
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4104 this_klass->set_annotations(anno); |
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4105 } else { |
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4106 this_klass->set_annotations(NULL); |
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4107 } |
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4108 |
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4109 if (fields_type_annotations != NULL || |
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4110 methods_type_annotations != NULL) { |
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4111 assert(this_klass->annotations() != NULL, "annotations should have been allocated"); |
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4112 Annotations* anno = Annotations::allocate(loader_data, |
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4113 fields_type_annotations, |
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4114 methods_type_annotations, |
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4115 NULL, |
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4116 NULL, CHECK_(nullHandle)); |
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4117 this_klass->annotations()->set_type_annotations(anno); |
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4118 } |
0 | 4119 |
4120 this_klass->set_minor_version(minor_version); | |
4121 this_klass->set_major_version(major_version); | |
6934 | 4122 this_klass->set_has_default_methods(has_default_methods); |
0 | 4123 |
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4124 // Set up Method*::intrinsic_id as soon as we know the names of methods. |
856
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4125 // (We used to do this lazily, but now we query it in Rewriter, |
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4126 // which is eagerly done for every method, so we might as well do it now, |
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4127 // when everything is fresh in memory.) |
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4128 if (Method::klass_id_for_intrinsics(this_klass()) != vmSymbols::NO_SID) { |
856
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4129 for (int j = 0; j < methods->length(); j++) { |
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4130 methods->at(j)->init_intrinsic_id(); |
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4131 } |
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4132 } |
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4133 |
0 | 4134 if (cached_class_file_bytes != NULL) { |
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4135 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes |
0 | 4136 this_klass->set_cached_class_file(cached_class_file_bytes, |
4137 cached_class_file_length); | |
4138 } | |
4139 | |
6934 | 4140 // Fill in field values obtained by parse_classfile_attributes |
4141 if (parsed_annotations.has_any_annotations()) | |
4142 parsed_annotations.apply_to(this_klass); | |
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4143 |
6934 | 4144 // Create annotations |
4145 if (_annotations != NULL && this_klass->annotations() == NULL) { | |
4146 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); | |
4147 this_klass->set_annotations(anno); | |
4148 } | |
4149 apply_parsed_class_attributes(this_klass); | |
4150 | |
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4151 // Create type annotations |
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4152 if (_type_annotations != NULL) { |
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4153 if (this_klass->annotations() == NULL) { |
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4154 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
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4155 this_klass->set_annotations(anno); |
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4156 } |
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4157 if (this_klass->annotations()->type_annotations() == NULL) { |
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4158 Annotations* anno = Annotations::allocate(loader_data, CHECK_NULL); |
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4159 this_klass->annotations()->set_type_annotations(anno); |
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4160 } |
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4161 this_klass->annotations()->type_annotations()->set_class_annotations(_type_annotations); |
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4162 } |
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4163 |
0 | 4164 // Miranda methods |
4165 if ((num_miranda_methods > 0) || | |
4166 // if this class introduced new miranda methods or | |
4167 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
4168 // super class exists and this class inherited miranda methods | |
4169 ) { | |
4170 this_klass->set_has_miranda_methods(); // then set a flag | |
4171 } | |
4172 | |
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4173 this_klass->set_transitive_interfaces(transitive_interfaces); |
0 | 4174 |
4175 // Fill in information needed to compute superclasses. | |
4176 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
4177 | |
4178 // Initialize itable offset tables | |
4179 klassItable::setup_itable_offset_table(this_klass); | |
4180 | |
6934 | 4181 // Compute transitive closure of interfaces this class implements |
0 | 4182 // Do final class setup |
938 | 4183 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
0 | 4184 |
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4185 // Fill in has_finalizer, has_vanilla_constructor, and layout_helper |
0 | 4186 set_precomputed_flags(this_klass); |
4187 | |
4188 // reinitialize modifiers, using the InnerClasses attribute | |
4189 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
4190 this_klass->set_modifier_flags(computed_modifiers); | |
4191 | |
4192 // check if this class can access its super class | |
4193 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
4194 | |
4195 // check if this class can access its superinterfaces | |
4196 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
4197 | |
4198 // check if this class overrides any final method | |
4199 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
4200 | |
4201 // check that if this class is an interface then it doesn't have static methods | |
4202 if (this_klass->is_interface()) { | |
7579
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4203 /* An interface in a JAVA 8 classfile can be static */ |
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4204 if (_major_version < JAVA_8_VERSION) { |
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4205 check_illegal_static_method(this_klass, CHECK_(nullHandle)); |
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4206 } |
0 | 4207 } |
4208 | |
6934 | 4209 |
4210 #ifdef ASSERT | |
4211 if (ParseAllGenericSignatures) { | |
4212 parseAndPrintGenericSignatures(this_klass, CHECK_(nullHandle)); | |
4213 } | |
4214 #endif | |
4215 | |
4216 // Generate any default methods - default methods are interface methods | |
4217 // that have a default implementation. This is new with Lambda project. | |
4218 if (has_default_methods && !access_flags.is_interface() && | |
4219 local_interfaces->length() > 0) { | |
4220 DefaultMethods::generate_default_methods( | |
4221 this_klass(), &all_mirandas, CHECK_(nullHandle)); | |
4222 } | |
4223 | |
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4224 // Allocate mirror and initialize static fields |
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4225 java_lang_Class::create_mirror(this_klass, CHECK_(nullHandle)); |
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4226 |
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4227 // Allocate a simple java object for locking during class initialization. |
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4228 // This needs to be a java object because it can be held across a java call. |
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4229 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_NULL); |
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4230 this_klass->set_init_lock(r); |
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4231 |
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4232 // TODO: Move these oops to the mirror |
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4233 this_klass->set_protection_domain(protection_domain()); |
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4234 |
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4235 // Update the loader_data graph. |
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4236 record_defined_class_dependencies(this_klass, CHECK_NULL); |
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4237 |
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4238 ClassLoadingService::notify_class_loaded(InstanceKlass::cast(this_klass()), |
0 | 4239 false /* not shared class */); |
4240 | |
4241 if (TraceClassLoading) { | |
6934 | 4242 ResourceMark rm; |
0 | 4243 // print in a single call to reduce interleaving of output |
4244 if (cfs->source() != NULL) { | |
4245 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
4246 cfs->source()); | |
4247 } else if (class_loader.is_null()) { | |
4248 if (THREAD->is_Java_thread()) { | |
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4249 Klass* caller = ((JavaThread*)THREAD)->security_get_caller_class(1); |
0 | 4250 tty->print("[Loaded %s by instance of %s]\n", |
4251 this_klass->external_name(), | |
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|
4252 InstanceKlass::cast(caller)->external_name()); |
0 | 4253 } else { |
4254 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
4255 } | |
4256 } else { | |
4257 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
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4258 InstanceKlass::cast(class_loader->klass())->external_name()); |
0 | 4259 } |
4260 } | |
4261 | |
4262 if (TraceClassResolution) { | |
6934 | 4263 ResourceMark rm; |
0 | 4264 // print out the superclass. |
6983 | 4265 const char * from = this_klass()->external_name(); |
0 | 4266 if (this_klass->java_super() != NULL) { |
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4267 tty->print("RESOLVE %s %s (super)\n", from, InstanceKlass::cast(this_klass->java_super())->external_name()); |
0 | 4268 } |
4269 // print out each of the interface classes referred to by this class. | |
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4270 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
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4271 if (local_interfaces != NULL) { |
0 | 4272 int length = local_interfaces->length(); |
4273 for (int i = 0; i < length; i++) { | |
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4274 Klass* k = local_interfaces->at(i); |
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4275 InstanceKlass* to_class = InstanceKlass::cast(k); |
0 | 4276 const char * to = to_class->external_name(); |
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4277 tty->print("RESOLVE %s %s (interface)\n", from, to); |
0 | 4278 } |
4279 } | |
4280 } | |
4281 | |
4282 #ifndef PRODUCT | |
4283 if( PrintCompactFieldsSavings ) { | |
6934 | 4284 ResourceMark rm; |
0 | 4285 if( nonstatic_field_size < orig_nonstatic_field_size ) { |
165
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4286 tty->print("[Saved %d of %d bytes in %s]\n", |
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4287 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
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4288 orig_nonstatic_field_size*heapOopSize, |
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4289 this_klass->external_name()); |
0 | 4290 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
165
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4291 tty->print("[Wasted %d over %d bytes in %s]\n", |
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4292 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
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4293 orig_nonstatic_field_size*heapOopSize, |
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4294 this_klass->external_name()); |
0 | 4295 } |
4296 } | |
4297 #endif | |
4298 | |
7587 | 4299 #ifndef PRODUCT |
4300 if (PrintFieldLayout) { | |
4301 print_field_layout(name, | |
4302 fields, | |
4303 cp, | |
4304 instance_size, | |
4305 first_nonstatic_field_offset, | |
4306 next_nonstatic_field_offset, | |
4307 next_static_type_offset); | |
4308 } | |
4309 #endif | |
4310 | |
0 | 4311 // preserve result across HandleMark |
4312 preserve_this_klass = this_klass(); | |
4313 } | |
4314 | |
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4315 // Create new handle outside HandleMark (might be needed for |
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4316 // Extended Class Redefinition) |
0 | 4317 instanceKlassHandle this_klass (THREAD, preserve_this_klass); |
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4318 debug_only(this_klass->verify();) |
0 | 4319 |
4320 return this_klass; | |
4321 } | |
4322 | |
7587 | 4323 void ClassFileParser::print_field_layout(Symbol* name, |
4324 Array<u2>* fields, | |
4325 constantPoolHandle cp, | |
4326 int instance_size, | |
4327 int instance_fields_start, | |
4328 int instance_fields_end, | |
4329 int static_fields_end) { | |
4330 tty->print("%s: field layout\n", name->as_klass_external_name()); | |
4331 tty->print(" @%3d %s\n", instance_fields_start, "--- instance fields start ---"); | |
4332 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
4333 if (!fs.access_flags().is_static()) { | |
4334 tty->print(" @%3d \"%s\" %s\n", | |
4335 fs.offset(), | |
4336 fs.name()->as_klass_external_name(), | |
4337 fs.signature()->as_klass_external_name()); | |
4338 } | |
4339 } | |
4340 tty->print(" @%3d %s\n", instance_fields_end, "--- instance fields end ---"); | |
4341 tty->print(" @%3d %s\n", instance_size * wordSize, "--- instance ends ---"); | |
4342 tty->print(" @%3d %s\n", InstanceMirrorKlass::offset_of_static_fields(), "--- static fields start ---"); | |
4343 for (AllFieldStream fs(fields, cp); !fs.done(); fs.next()) { | |
4344 if (fs.access_flags().is_static()) { | |
4345 tty->print(" @%3d \"%s\" %s\n", | |
4346 fs.offset(), | |
4347 fs.name()->as_klass_external_name(), | |
4348 fs.signature()->as_klass_external_name()); | |
4349 } | |
4350 } | |
4351 tty->print(" @%3d %s\n", static_fields_end, "--- static fields end ---"); | |
4352 tty->print("\n"); | |
4353 } | |
4354 | |
939
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4355 unsigned int |
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4356 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
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4357 unsigned int nonstatic_oop_map_count, |
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4358 int first_nonstatic_oop_offset) { |
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4359 unsigned int map_count = |
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4360 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
0 | 4361 if (nonstatic_oop_map_count > 0) { |
4362 // We have oops to add to map | |
938 | 4363 if (map_count == 0) { |
4364 map_count = nonstatic_oop_map_count; | |
0 | 4365 } else { |
938 | 4366 // Check whether we should add a new map block or whether the last one can |
4367 // be extended | |
4368 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
4369 OopMapBlock* const last_map = first_map + map_count - 1; | |
4370 | |
4371 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
0 | 4372 if (next_offset == first_nonstatic_oop_offset) { |
4373 // There is no gap bettwen superklass's last oop field and first | |
4374 // local oop field, merge maps. | |
4375 nonstatic_oop_map_count -= 1; | |
4376 } else { | |
4377 // Superklass didn't end with a oop field, add extra maps | |
938 | 4378 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
0 | 4379 } |
938 | 4380 map_count += nonstatic_oop_map_count; |
0 | 4381 } |
4382 } | |
938 | 4383 return map_count; |
0 | 4384 } |
4385 | |
4386 | |
4387 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
939
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4388 unsigned int nonstatic_oop_map_count, |
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4389 int* nonstatic_oop_offsets, |
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4390 unsigned int* nonstatic_oop_counts) { |
0 | 4391 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
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4392 const InstanceKlass* const super = k->superklass(); |
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4393 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
938 | 4394 if (super_count > 0) { |
4395 // Copy maps from superklass | |
0 | 4396 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
939
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4397 for (unsigned int i = 0; i < super_count; ++i) { |
0 | 4398 *this_oop_map++ = *super_oop_map++; |
4399 } | |
4400 } | |
938 | 4401 |
0 | 4402 if (nonstatic_oop_map_count > 0) { |
938 | 4403 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
4404 // The counts differ because there is no gap between superklass's last oop | |
4405 // field and the first local oop field. Extend the last oop map copied | |
0 | 4406 // from the superklass instead of creating new one. |
4407 nonstatic_oop_map_count--; | |
4408 nonstatic_oop_offsets++; | |
4409 this_oop_map--; | |
938 | 4410 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
0 | 4411 this_oop_map++; |
4412 } | |
938 | 4413 |
0 | 4414 // Add new map blocks, fill them |
4415 while (nonstatic_oop_map_count-- > 0) { | |
4416 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
938 | 4417 this_oop_map->set_count(*nonstatic_oop_counts++); |
0 | 4418 this_oop_map++; |
4419 } | |
938 | 4420 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
4421 this_oop_map, "sanity"); | |
0 | 4422 } |
4423 } | |
4424 | |
4425 | |
4426 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
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4427 Klass* super = k->super(); |
0 | 4428 |
4429 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
4430 // in which case we don't have to register objects as finalizable | |
4431 if (!_has_empty_finalizer) { | |
4432 if (_has_finalizer || | |
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4433 (super != NULL && super->has_finalizer())) { |
0 | 4434 k->set_has_finalizer(); |
4435 } | |
4436 } | |
4437 | |
4438 #ifdef ASSERT | |
4439 bool f = false; | |
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4440 Method* m = k->lookup_method(vmSymbols::finalize_method_name(), |
0 | 4441 vmSymbols::void_method_signature()); |
4442 if (m != NULL && !m->is_empty_method()) { | |
4443 f = true; | |
4444 } | |
4445 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
4446 #endif | |
4447 | |
4448 // Check if this klass supports the java.lang.Cloneable interface | |
1142 | 4449 if (SystemDictionary::Cloneable_klass_loaded()) { |
4450 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
0 | 4451 k->set_is_cloneable(); |
4452 } | |
4453 } | |
4454 | |
4455 // Check if this klass has a vanilla default constructor | |
4456 if (super == NULL) { | |
4457 // java.lang.Object has empty default constructor | |
4458 k->set_has_vanilla_constructor(); | |
4459 } else { | |
6983 | 4460 if (super->has_vanilla_constructor() && |
0 | 4461 _has_vanilla_constructor) { |
4462 k->set_has_vanilla_constructor(); | |
4463 } | |
4464 #ifdef ASSERT | |
4465 bool v = false; | |
6983 | 4466 if (super->has_vanilla_constructor()) { |
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4467 Method* constructor = k->find_method(vmSymbols::object_initializer_name( |
0 | 4468 ), vmSymbols::void_method_signature()); |
4469 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
4470 v = true; | |
4471 } | |
4472 } | |
4473 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
4474 #endif | |
4475 } | |
4476 | |
4477 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
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4478 // See documentation of InstanceKlass::can_be_fastpath_allocated(). |
0 | 4479 assert(k->size_helper() > 0, "layout_helper is initialized"); |
4480 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
4481 || k->is_abstract() || k->is_interface() | |
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4482 || (k->name() == vmSymbols::java_lang_Class() && k->class_loader() == NULL) |
0 | 4483 || k->size_helper() >= FastAllocateSizeLimit) { |
4484 // Forbid fast-path allocation. | |
4485 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
4486 k->set_layout_helper(lh); | |
4487 } | |
4488 } | |
4489 | |
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4490 // Attach super classes and interface classes to class loader data |
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4491 void ClassFileParser::record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS) { |
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4492 ClassLoaderData * defining_loader_data = defined_klass->class_loader_data(); |
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4493 if (defining_loader_data->is_the_null_class_loader_data()) { |
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4494 // Dependencies to null class loader data are implicit. |
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4495 return; |
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4496 } else { |
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4497 // add super class dependency |
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4498 Klass* super = defined_klass->super(); |
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4499 if (super != NULL) { |
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4500 defining_loader_data->record_dependency(super, CHECK); |
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4501 } |
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4502 |
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4503 // add super interface dependencies |
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4504 Array<Klass*>* local_interfaces = defined_klass->local_interfaces(); |
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4505 if (local_interfaces != NULL) { |
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4506 int length = local_interfaces->length(); |
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4507 for (int i = 0; i < length; i++) { |
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4508 defining_loader_data->record_dependency(local_interfaces->at(i), CHECK); |
0 | 4509 } |
4510 } | |
4511 } | |
4512 } | |
4513 | |
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4514 // utility method for appending and array with check for duplicates |
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4515 |
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4516 void append_interfaces(GrowableArray<Klass*>* result, Array<Klass*>* ifs) { |
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4517 // iterate over new interfaces |
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4518 for (int i = 0; i < ifs->length(); i++) { |
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4519 Klass* e = ifs->at(i); |
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4520 assert(e->is_klass() && InstanceKlass::cast(e)->is_interface(), "just checking"); |
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4521 // add new interface |
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4522 result->append_if_missing(e); |
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4523 } |
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4524 } |
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4525 |
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4526 |
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4527 Array<Klass*>* ClassFileParser::compute_transitive_interfaces(ClassLoaderData* loader_data, instanceKlassHandle super, Array<Klass*>* local_ifs, TRAPS) { |
0 | 4528 // Compute maximum size for transitive interfaces |
4529 int max_transitive_size = 0; | |
4530 int super_size = 0; | |
4531 // Add superclass transitive interfaces size | |
4532 if (super.not_null()) { | |
4533 super_size = super->transitive_interfaces()->length(); | |
4534 max_transitive_size += super_size; | |
4535 } | |
4536 // Add local interfaces' super interfaces | |
4537 int local_size = local_ifs->length(); | |
4538 for (int i = 0; i < local_size; i++) { | |
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4539 Klass* l = local_ifs->at(i); |
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4540 max_transitive_size += InstanceKlass::cast(l)->transitive_interfaces()->length(); |
0 | 4541 } |
4542 // Finally add local interfaces | |
4543 max_transitive_size += local_size; | |
4544 // Construct array | |
4545 if (max_transitive_size == 0) { | |
4546 // no interfaces, use canonicalized array | |
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4547 return Universe::the_empty_klass_array(); |
0 | 4548 } else if (max_transitive_size == super_size) { |
4549 // no new local interfaces added, share superklass' transitive interface array | |
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4550 return super->transitive_interfaces(); |
0 | 4551 } else if (max_transitive_size == local_size) { |
4552 // only local interfaces added, share local interface array | |
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4553 return local_ifs; |
0 | 4554 } else { |
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4555 ResourceMark rm; |
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4556 GrowableArray<Klass*>* result = new GrowableArray<Klass*>(max_transitive_size); |
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4557 |
0 | 4558 // Copy down from superclass |
4559 if (super.not_null()) { | |
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4560 append_interfaces(result, super->transitive_interfaces()); |
0 | 4561 } |
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4562 |
0 | 4563 // Copy down from local interfaces' superinterfaces |
4564 for (int i = 0; i < local_ifs->length(); i++) { | |
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4565 Klass* l = local_ifs->at(i); |
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4566 append_interfaces(result, InstanceKlass::cast(l)->transitive_interfaces()); |
0 | 4567 } |
4568 // Finally add local interfaces | |
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4569 append_interfaces(result, local_ifs); |
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4570 |
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4571 // length will be less than the max_transitive_size if duplicates were removed |
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4572 int length = result->length(); |
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4573 assert(length <= max_transitive_size, "just checking"); |
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4574 Array<Klass*>* new_result = MetadataFactory::new_array<Klass*>(loader_data, length, CHECK_NULL); |
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4575 for (int i = 0; i < length; i++) { |
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4576 Klass* e = result->at(i); |
0 | 4577 assert(e != NULL, "just checking"); |
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4578 new_result->at_put(i, e); |
0 | 4579 } |
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4580 return new_result; |
0 | 4581 } |
4582 } | |
4583 | |
4584 | |
4585 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
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4586 Klass* super = this_klass->super(); |
0 | 4587 if ((super != NULL) && |
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4588 (!Reflection::verify_class_access(this_klass(), super, false))) { |
0 | 4589 ResourceMark rm(THREAD); |
4590 Exceptions::fthrow( | |
4591 THREAD_AND_LOCATION, | |
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4592 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4593 "class %s cannot access its superclass %s", |
4594 this_klass->external_name(), | |
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4595 InstanceKlass::cast(super)->external_name() |
0 | 4596 ); |
4597 return; | |
4598 } | |
4599 } | |
4600 | |
4601 | |
4602 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
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4603 Array<Klass*>* local_interfaces = this_klass->local_interfaces(); |
0 | 4604 int lng = local_interfaces->length(); |
4605 for (int i = lng - 1; i >= 0; i--) { | |
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4606 Klass* k = local_interfaces->at(i); |
6983 | 4607 assert (k != NULL && k->is_interface(), "invalid interface"); |
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4608 if (!Reflection::verify_class_access(this_klass(), k, false)) { |
0 | 4609 ResourceMark rm(THREAD); |
4610 Exceptions::fthrow( | |
4611 THREAD_AND_LOCATION, | |
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4612 vmSymbols::java_lang_IllegalAccessError(), |
0 | 4613 "class %s cannot access its superinterface %s", |
4614 this_klass->external_name(), | |
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4615 InstanceKlass::cast(k)->external_name() |
0 | 4616 ); |
4617 return; | |
4618 } | |
4619 } | |
4620 } | |
4621 | |
4622 | |
4623 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
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4624 Array<Method*>* methods = this_klass->methods(); |
0 | 4625 int num_methods = methods->length(); |
4626 | |
4627 // go thru each method and check if it overrides a final method | |
4628 for (int index = 0; index < num_methods; index++) { | |
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4629 Method* m = methods->at(index); |
0 | 4630 |
4631 // skip private, static and <init> methods | |
4632 if ((!m->is_private()) && | |
4633 (!m->is_static()) && | |
4634 (m->name() != vmSymbols::object_initializer_name())) { | |
4635 | |
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4636 Symbol* name = m->name(); |
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4637 Symbol* signature = m->signature(); |
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4638 Klass* k = this_klass->super(); |
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4639 Method* super_m = NULL; |
0 | 4640 while (k != NULL) { |
4641 // skip supers that don't have final methods. | |
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4642 if (k->has_final_method()) { |
0 | 4643 // lookup a matching method in the super class hierarchy |
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4644 super_m = InstanceKlass::cast(k)->lookup_method(name, signature); |
0 | 4645 if (super_m == NULL) { |
4646 break; // didn't find any match; get out | |
4647 } | |
4648 | |
4649 if (super_m->is_final() && | |
4650 // matching method in super is final | |
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4651 (Reflection::verify_field_access(this_klass(), |
0 | 4652 super_m->method_holder(), |
4653 super_m->method_holder(), | |
4654 super_m->access_flags(), false)) | |
4655 // this class can access super final method and therefore override | |
4656 ) { | |
4657 ResourceMark rm(THREAD); | |
4658 Exceptions::fthrow( | |
4659 THREAD_AND_LOCATION, | |
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|
4660 vmSymbols::java_lang_VerifyError(), |
0 | 4661 "class %s overrides final method %s.%s", |
4662 this_klass->external_name(), | |
4663 name->as_C_string(), | |
4664 signature->as_C_string() | |
4665 ); | |
4666 return; | |
4667 } | |
4668 | |
4669 // continue to look from super_m's holder's super. | |
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18fb7da42534
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diff
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4670 k = super_m->method_holder()->super(); |
0 | 4671 continue; |
4672 } | |
4673 | |
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4674 k = k->super(); |
0 | 4675 } |
4676 } | |
4677 } | |
4678 } | |
4679 | |
4680 | |
4681 // assumes that this_klass is an interface | |
4682 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
4683 assert(this_klass->is_interface(), "not an interface"); | |
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4684 Array<Method*>* methods = this_klass->methods(); |
0 | 4685 int num_methods = methods->length(); |
4686 | |
4687 for (int index = 0; index < num_methods; index++) { | |
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4688 Method* m = methods->at(index); |
0 | 4689 // if m is static and not the init method, throw a verify error |
4690 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
4691 ResourceMark rm(THREAD); | |
4692 Exceptions::fthrow( | |
4693 THREAD_AND_LOCATION, | |
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|
4694 vmSymbols::java_lang_VerifyError(), |
0 | 4695 "Illegal static method %s in interface %s", |
4696 m->name()->as_C_string(), | |
4697 this_klass->external_name() | |
4698 ); | |
4699 return; | |
4700 } | |
4701 } | |
4702 } | |
4703 | |
4704 // utility methods for format checking | |
4705 | |
4706 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
4707 if (!_need_verify) { return; } | |
4708 | |
4709 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
4710 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4711 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4712 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
4713 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4714 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
4715 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4716 | |
4717 if ((is_abstract && is_final) || | |
4718 (is_interface && !is_abstract) || | |
4719 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
4720 (!is_interface && major_gte_15 && is_annotation)) { | |
4721 ResourceMark rm(THREAD); | |
4722 Exceptions::fthrow( | |
4723 THREAD_AND_LOCATION, | |
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|
4724 vmSymbols::java_lang_ClassFormatError(), |
0 | 4725 "Illegal class modifiers in class %s: 0x%X", |
4726 _class_name->as_C_string(), flags | |
4727 ); | |
4728 return; | |
4729 } | |
4730 } | |
4731 | |
4732 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
4733 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4734 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4735 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4736 | |
4737 return ((is_public && is_protected) || | |
4738 (is_public && is_private) || | |
4739 (is_protected && is_private)); | |
4740 } | |
4741 | |
4742 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
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|
4743 u2 max_version = |
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|
4744 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
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|
4745 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
0 | 4746 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
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|
4747 (major <= max_version) && |
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|
4748 ((major != max_version) || |
0 | 4749 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
4750 } | |
4751 | |
4752 void ClassFileParser::verify_legal_field_modifiers( | |
4753 jint flags, bool is_interface, TRAPS) { | |
4754 if (!_need_verify) { return; } | |
4755 | |
4756 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4757 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
4758 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4759 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4760 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4761 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
4762 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
4763 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
4764 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
4765 | |
4766 bool is_illegal = false; | |
4767 | |
4768 if (is_interface) { | |
4769 if (!is_public || !is_static || !is_final || is_private || | |
4770 is_protected || is_volatile || is_transient || | |
4771 (major_gte_15 && is_enum)) { | |
4772 is_illegal = true; | |
4773 } | |
4774 } else { // not interface | |
4775 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
4776 is_illegal = true; | |
4777 } | |
4778 } | |
4779 | |
4780 if (is_illegal) { | |
4781 ResourceMark rm(THREAD); | |
4782 Exceptions::fthrow( | |
4783 THREAD_AND_LOCATION, | |
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|
4784 vmSymbols::java_lang_ClassFormatError(), |
0 | 4785 "Illegal field modifiers in class %s: 0x%X", |
4786 _class_name->as_C_string(), flags); | |
4787 return; | |
4788 } | |
4789 } | |
4790 | |
4791 void ClassFileParser::verify_legal_method_modifiers( | |
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4792 jint flags, bool is_interface, Symbol* name, TRAPS) { |
0 | 4793 if (!_need_verify) { return; } |
4794 | |
4795 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
4796 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
4797 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
4798 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
4799 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
4800 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
4801 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
4802 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
4803 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
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|
4804 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; |
0 | 4805 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; |
6934 | 4806 const bool major_gte_8 = _major_version >= JAVA_8_VERSION; |
0 | 4807 const bool is_initializer = (name == vmSymbols::object_initializer_name()); |
4808 | |
4809 bool is_illegal = false; | |
4810 | |
4811 if (is_interface) { | |
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|
4812 if (major_gte_8) { |
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|
4813 // Class file version is JAVA_8_VERSION or later Methods of |
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|
4814 // interfaces may set any of the flags except ACC_PROTECTED, |
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|
4815 // ACC_FINAL, ACC_NATIVE, and ACC_SYNCHRONIZED; they must |
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|
4816 // have exactly one of the ACC_PUBLIC or ACC_PRIVATE flags set. |
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|
4817 if ((is_public == is_private) || /* Only one of private and public should be true - XNOR */ |
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|
4818 (is_native || is_protected || is_final || is_synchronized) || |
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changeset
|
4819 // If a specific method of a class or interface has its |
adc176e95bf2
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changeset
|
4820 // ACC_ABSTRACT flag set, it must not have any of its |
adc176e95bf2
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changeset
|
4821 // ACC_FINAL, ACC_NATIVE, ACC_PRIVATE, ACC_STATIC, |
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|
4822 // ACC_STRICT, or ACC_SYNCHRONIZED flags set. No need to |
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changeset
|
4823 // check for ACC_FINAL, ACC_NATIVE or ACC_SYNCHRONIZED as |
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4824 // those flags are illegal irrespective of ACC_ABSTRACT being set or not. |
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4825 (is_abstract && (is_private || is_static || is_strict))) { |
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4826 is_illegal = true; |
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|
4827 } |
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|
4828 } else if (major_gte_15) { |
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4829 // Class file version in the interval [JAVA_1_5_VERSION, JAVA_8_VERSION) |
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4830 if (!is_public || is_static || is_final || is_synchronized || |
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4831 is_native || !is_abstract || is_strict) { |
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4832 is_illegal = true; |
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|
4833 } |
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|
4834 } else { |
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|
4835 // Class file version is pre-JAVA_1_5_VERSION |
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4836 if (!is_public || is_static || is_final || is_native || !is_abstract) { |
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4837 is_illegal = true; |
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4838 } |
0 | 4839 } |
4840 } else { // not interface | |
4841 if (is_initializer) { | |
4842 if (is_static || is_final || is_synchronized || is_native || | |
4843 is_abstract || (major_gte_15 && is_bridge)) { | |
4844 is_illegal = true; | |
4845 } | |
4846 } else { // not initializer | |
4847 if (is_abstract) { | |
4848 if ((is_final || is_native || is_private || is_static || | |
4849 (major_gte_15 && (is_synchronized || is_strict)))) { | |
4850 is_illegal = true; | |
4851 } | |
4852 } | |
4853 if (has_illegal_visibility(flags)) { | |
4854 is_illegal = true; | |
4855 } | |
4856 } | |
4857 } | |
4858 | |
4859 if (is_illegal) { | |
4860 ResourceMark rm(THREAD); | |
4861 Exceptions::fthrow( | |
4862 THREAD_AND_LOCATION, | |
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4863 vmSymbols::java_lang_ClassFormatError(), |
0 | 4864 "Method %s in class %s has illegal modifiers: 0x%X", |
4865 name->as_C_string(), _class_name->as_C_string(), flags); | |
4866 return; | |
4867 } | |
4868 } | |
4869 | |
4870 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
4871 assert(_need_verify, "only called when _need_verify is true"); | |
4872 int i = 0; | |
4873 int count = length >> 2; | |
4874 for (int k=0; k<count; k++) { | |
4875 unsigned char b0 = buffer[i]; | |
4876 unsigned char b1 = buffer[i+1]; | |
4877 unsigned char b2 = buffer[i+2]; | |
4878 unsigned char b3 = buffer[i+3]; | |
4879 // For an unsigned char v, | |
4880 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
4881 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
4882 unsigned char res = b0 | b0 - 1 | | |
4883 b1 | b1 - 1 | | |
4884 b2 | b2 - 1 | | |
4885 b3 | b3 - 1; | |
4886 if (res >= 128) break; | |
4887 i += 4; | |
4888 } | |
4889 for(; i < length; i++) { | |
4890 unsigned short c; | |
4891 // no embedded zeros | |
4892 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4893 if(buffer[i] < 128) { | |
4894 continue; | |
4895 } | |
4896 if ((i + 5) < length) { // see if it's legal supplementary character | |
4897 if (UTF8::is_supplementary_character(&buffer[i])) { | |
4898 c = UTF8::get_supplementary_character(&buffer[i]); | |
4899 i += 5; | |
4900 continue; | |
4901 } | |
4902 } | |
4903 switch (buffer[i] >> 4) { | |
4904 default: break; | |
4905 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
4906 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4907 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
4908 c = (buffer[i] & 0x1F) << 6; | |
4909 i++; | |
4910 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
4911 c += buffer[i] & 0x3F; | |
4912 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
4913 // for classes with major > 47, c must a null or a character in its shortest form | |
4914 break; | |
4915 } | |
4916 } | |
4917 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4918 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
4919 c = (buffer[i] & 0xF) << 12; | |
4920 i += 2; | |
4921 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
4922 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
4923 if (_major_version <= 47 || c >= 0x800) { | |
4924 // for classes with major > 47, c must be in its shortest form | |
4925 break; | |
4926 } | |
4927 } | |
4928 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4929 } // end of switch | |
4930 } // end of for | |
4931 } | |
4932 | |
4933 // Checks if name is a legal class name. | |
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4934 void ClassFileParser::verify_legal_class_name(Symbol* name, TRAPS) { |
0 | 4935 if (!_need_verify || _relax_verify) { return; } |
4936 | |
4937 char buf[fixed_buffer_size]; | |
4938 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4939 unsigned int length = name->utf8_length(); | |
4940 bool legal = false; | |
4941 | |
4942 if (length > 0) { | |
4943 char* p; | |
4944 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
4945 p = skip_over_field_signature(bytes, false, length, CHECK); | |
4946 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4947 } else if (_major_version < JAVA_1_5_VERSION) { | |
4948 if (bytes[0] != '<') { | |
4949 p = skip_over_field_name(bytes, true, length); | |
4950 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4951 } | |
4952 } else { | |
4953 // 4900761: relax the constraints based on JSR202 spec | |
4954 // Class names may be drawn from the entire Unicode character set. | |
4955 // Identifiers between '/' must be unqualified names. | |
4956 // The utf8 string has been verified when parsing cpool entries. | |
4957 legal = verify_unqualified_name(bytes, length, LegalClass); | |
4958 } | |
4959 } | |
4960 if (!legal) { | |
4961 ResourceMark rm(THREAD); | |
4962 Exceptions::fthrow( | |
4963 THREAD_AND_LOCATION, | |
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4964 vmSymbols::java_lang_ClassFormatError(), |
0 | 4965 "Illegal class name \"%s\" in class file %s", bytes, |
4966 _class_name->as_C_string() | |
4967 ); | |
4968 return; | |
4969 } | |
4970 } | |
4971 | |
4972 // Checks if name is a legal field name. | |
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4973 void ClassFileParser::verify_legal_field_name(Symbol* name, TRAPS) { |
0 | 4974 if (!_need_verify || _relax_verify) { return; } |
4975 | |
4976 char buf[fixed_buffer_size]; | |
4977 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4978 unsigned int length = name->utf8_length(); | |
4979 bool legal = false; | |
4980 | |
4981 if (length > 0) { | |
4982 if (_major_version < JAVA_1_5_VERSION) { | |
4983 if (bytes[0] != '<') { | |
4984 char* p = skip_over_field_name(bytes, false, length); | |
4985 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4986 } | |
4987 } else { | |
4988 // 4881221: relax the constraints based on JSR202 spec | |
4989 legal = verify_unqualified_name(bytes, length, LegalField); | |
4990 } | |
4991 } | |
4992 | |
4993 if (!legal) { | |
4994 ResourceMark rm(THREAD); | |
4995 Exceptions::fthrow( | |
4996 THREAD_AND_LOCATION, | |
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4997 vmSymbols::java_lang_ClassFormatError(), |
0 | 4998 "Illegal field name \"%s\" in class %s", bytes, |
4999 _class_name->as_C_string() | |
5000 ); | |
5001 return; | |
5002 } | |
5003 } | |
5004 | |
5005 // Checks if name is a legal method name. | |
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5006 void ClassFileParser::verify_legal_method_name(Symbol* name, TRAPS) { |
0 | 5007 if (!_need_verify || _relax_verify) { return; } |
5008 | |
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5009 assert(name != NULL, "method name is null"); |
0 | 5010 char buf[fixed_buffer_size]; |
5011 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
5012 unsigned int length = name->utf8_length(); | |
5013 bool legal = false; | |
5014 | |
5015 if (length > 0) { | |
5016 if (bytes[0] == '<') { | |
5017 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
5018 legal = true; | |
5019 } | |
5020 } else if (_major_version < JAVA_1_5_VERSION) { | |
5021 char* p; | |
5022 p = skip_over_field_name(bytes, false, length); | |
5023 legal = (p != NULL) && ((p - bytes) == (int)length); | |
5024 } else { | |
5025 // 4881221: relax the constraints based on JSR202 spec | |
5026 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
5027 } | |
5028 } | |
5029 | |
5030 if (!legal) { | |
5031 ResourceMark rm(THREAD); | |
5032 Exceptions::fthrow( | |
5033 THREAD_AND_LOCATION, | |
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5034 vmSymbols::java_lang_ClassFormatError(), |
0 | 5035 "Illegal method name \"%s\" in class %s", bytes, |
5036 _class_name->as_C_string() | |
5037 ); | |
5038 return; | |
5039 } | |
5040 } | |
5041 | |
5042 | |
5043 // Checks if signature is a legal field signature. | |
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5044 void ClassFileParser::verify_legal_field_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 5045 if (!_need_verify) { return; } |
5046 | |
5047 char buf[fixed_buffer_size]; | |
5048 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
5049 unsigned int length = signature->utf8_length(); | |
5050 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
5051 | |
5052 if (p == NULL || (p - bytes) != (int)length) { | |
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|
5053 throwIllegalSignature("Field", name, signature, CHECK); |
0 | 5054 } |
5055 } | |
5056 | |
5057 // Checks if signature is a legal method signature. | |
5058 // Returns number of parameters | |
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5059 int ClassFileParser::verify_legal_method_signature(Symbol* name, Symbol* signature, TRAPS) { |
0 | 5060 if (!_need_verify) { |
5061 // make sure caller's args_size will be less than 0 even for non-static | |
5062 // method so it will be recomputed in compute_size_of_parameters(). | |
5063 return -2; | |
5064 } | |
5065 | |
5066 unsigned int args_size = 0; | |
5067 char buf[fixed_buffer_size]; | |
5068 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
5069 unsigned int length = signature->utf8_length(); | |
5070 char* nextp; | |
5071 | |
5072 // The first character must be a '(' | |
5073 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
5074 length--; | |
5075 // Skip over legal field signatures | |
5076 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
5077 while ((length > 0) && (nextp != NULL)) { | |
5078 args_size++; | |
5079 if (p[0] == 'J' || p[0] == 'D') { | |
5080 args_size++; | |
5081 } | |
5082 length -= nextp - p; | |
5083 p = nextp; | |
5084 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
5085 } | |
5086 // The first non-signature thing better be a ')' | |
5087 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
5088 length--; | |
5089 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
5090 // All internal methods must return void | |
5091 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
5092 return args_size; | |
5093 } | |
5094 } else { | |
5095 // Now we better just have a return value | |
5096 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
5097 if (nextp && ((int)length == (nextp - p))) { | |
5098 return args_size; | |
5099 } | |
5100 } | |
5101 } | |
5102 } | |
5103 // Report error | |
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5104 throwIllegalSignature("Method", name, signature, CHECK_0); |
0 | 5105 return 0; |
5106 } | |
5107 | |
5108 | |
1881
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5109 // Unqualified names may not contain the characters '.', ';', '[', or '/'. |
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5110 // Method names also may not contain the characters '<' or '>', unless <init> |
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5111 // or <clinit>. Note that method names may not be <init> or <clinit> in this |
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5112 // method. Because these names have been checked as special cases before |
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5113 // calling this method in verify_legal_method_name. |
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5114 bool ClassFileParser::verify_unqualified_name( |
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5115 char* name, unsigned int length, int type) { |
0 | 5116 jchar ch; |
5117 | |
5118 for (char* p = name; p != name + length; ) { | |
5119 ch = *p; | |
5120 if (ch < 128) { | |
5121 p++; | |
1881
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5122 if (ch == '.' || ch == ';' || ch == '[' ) { |
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5123 return false; // do not permit '.', ';', or '[' |
0 | 5124 } |
5125 if (type != LegalClass && ch == '/') { | |
5126 return false; // do not permit '/' unless it's class name | |
5127 } | |
5128 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
5129 return false; // do not permit '<' or '>' in method names | |
5130 } | |
5131 } else { | |
5132 char* tmp_p = UTF8::next(p, &ch); | |
5133 p = tmp_p; | |
5134 } | |
5135 } | |
5136 return true; | |
5137 } | |
5138 | |
5139 | |
5140 // Take pointer to a string. Skip over the longest part of the string that could | |
5141 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
5142 // Return a pointer to just past the fieldname. | |
5143 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
5144 // being true, we saw consecutive slashes (meaning we were looking for a | |
5145 // qualified path but found something that was badly-formed). | |
5146 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
5147 char* p; | |
5148 jchar ch; | |
5149 jboolean last_is_slash = false; | |
5150 jboolean not_first_ch = false; | |
5151 | |
5152 for (p = name; p != name + length; not_first_ch = true) { | |
5153 char* old_p = p; | |
5154 ch = *p; | |
5155 if (ch < 128) { | |
5156 p++; | |
5157 // quick check for ascii | |
5158 if ((ch >= 'a' && ch <= 'z') || | |
5159 (ch >= 'A' && ch <= 'Z') || | |
5160 (ch == '_' || ch == '$') || | |
5161 (not_first_ch && ch >= '0' && ch <= '9')) { | |
5162 last_is_slash = false; | |
5163 continue; | |
5164 } | |
5165 if (slash_ok && ch == '/') { | |
5166 if (last_is_slash) { | |
5167 return NULL; // Don't permit consecutive slashes | |
5168 } | |
5169 last_is_slash = true; | |
5170 continue; | |
5171 } | |
5172 } else { | |
5173 jint unicode_ch; | |
5174 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
5175 p = tmp_p; | |
5176 last_is_slash = false; | |
5177 // Check if ch is Java identifier start or is Java identifier part | |
5178 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
5179 EXCEPTION_MARK; | |
1142 | 5180 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
0 | 5181 |
5182 // return value | |
5183 JavaValue result(T_BOOLEAN); | |
5184 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
5185 JavaCallArguments args; | |
5186 args.push_int(unicode_ch); | |
5187 | |
5188 // public static boolean isJavaIdentifierStart(char ch); | |
5189 JavaCalls::call_static(&result, | |
5190 klass, | |
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5191 vmSymbols::isJavaIdentifierStart_name(), |
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5192 vmSymbols::int_bool_signature(), |
0 | 5193 &args, |
5194 THREAD); | |
5195 | |
5196 if (HAS_PENDING_EXCEPTION) { | |
5197 CLEAR_PENDING_EXCEPTION; | |
5198 return 0; | |
5199 } | |
5200 if (result.get_jboolean()) { | |
5201 continue; | |
5202 } | |
5203 | |
5204 if (not_first_ch) { | |
5205 // public static boolean isJavaIdentifierPart(char ch); | |
5206 JavaCalls::call_static(&result, | |
5207 klass, | |
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5208 vmSymbols::isJavaIdentifierPart_name(), |
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5209 vmSymbols::int_bool_signature(), |
0 | 5210 &args, |
5211 THREAD); | |
5212 | |
5213 if (HAS_PENDING_EXCEPTION) { | |
5214 CLEAR_PENDING_EXCEPTION; | |
5215 return 0; | |
5216 } | |
5217 | |
5218 if (result.get_jboolean()) { | |
5219 continue; | |
5220 } | |
5221 } | |
5222 } | |
5223 return (not_first_ch) ? old_p : NULL; | |
5224 } | |
5225 return (not_first_ch) ? p : NULL; | |
5226 } | |
5227 | |
5228 | |
5229 // Take pointer to a string. Skip over the longest part of the string that could | |
5230 // be taken as a field signature. Allow "void" if void_ok. | |
5231 // Return a pointer to just past the signature. | |
5232 // Return NULL if no legal signature is found. | |
5233 char* ClassFileParser::skip_over_field_signature(char* signature, | |
5234 bool void_ok, | |
5235 unsigned int length, | |
5236 TRAPS) { | |
5237 unsigned int array_dim = 0; | |
5238 while (length > 0) { | |
5239 switch (signature[0]) { | |
5240 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
5241 case JVM_SIGNATURE_BOOLEAN: | |
5242 case JVM_SIGNATURE_BYTE: | |
5243 case JVM_SIGNATURE_CHAR: | |
5244 case JVM_SIGNATURE_SHORT: | |
5245 case JVM_SIGNATURE_INT: | |
5246 case JVM_SIGNATURE_FLOAT: | |
5247 case JVM_SIGNATURE_LONG: | |
5248 case JVM_SIGNATURE_DOUBLE: | |
5249 return signature + 1; | |
5250 case JVM_SIGNATURE_CLASS: { | |
5251 if (_major_version < JAVA_1_5_VERSION) { | |
5252 // Skip over the class name if one is there | |
5253 char* p = skip_over_field_name(signature + 1, true, --length); | |
5254 | |
5255 // The next character better be a semicolon | |
5256 if (p && (p - signature) > 1 && p[0] == ';') { | |
5257 return p + 1; | |
5258 } | |
5259 } else { | |
5260 // 4900761: For class version > 48, any unicode is allowed in class name. | |
5261 length--; | |
5262 signature++; | |
5263 while (length > 0 && signature[0] != ';') { | |
5264 if (signature[0] == '.') { | |
5265 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
5266 } | |
5267 length--; | |
5268 signature++; | |
5269 } | |
5270 if (signature[0] == ';') { return signature + 1; } | |
5271 } | |
5272 | |
5273 return NULL; | |
5274 } | |
5275 case JVM_SIGNATURE_ARRAY: | |
5276 array_dim++; | |
5277 if (array_dim > 255) { | |
5278 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
5279 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
5280 } | |
5281 // The rest of what's there better be a legal signature | |
5282 signature++; | |
5283 length--; | |
5284 void_ok = false; | |
5285 break; | |
5286 | |
5287 default: | |
5288 return NULL; | |
5289 } | |
5290 } | |
5291 return NULL; | |
5292 } |