Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.cpp @ 1602:136b78722a08
6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
author | jrose |
---|---|
date | Wed, 09 Jun 2010 18:50:45 -0700 |
parents | c18cbe5936b8 |
children | 2389669474a6 |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
2 * Copyright (c) 1997, 2009, 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 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1513
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_classFileParser.cpp.incl" | |
27 | |
28 // We generally try to create the oops directly when parsing, rather than allocating | |
29 // temporary data structures and copying the bytes twice. A temporary area is only | |
30 // needed when parsing utf8 entries in the constant pool and when parsing line number | |
31 // tables. | |
32 | |
33 // We add assert in debug mode when class format is not checked. | |
34 | |
35 #define JAVA_CLASSFILE_MAGIC 0xCAFEBABE | |
36 #define JAVA_MIN_SUPPORTED_VERSION 45 | |
136
7f3a69574470
6695506: JVM should accept classfiles with classfile version 51
kamg
parents:
113
diff
changeset
|
37 #define JAVA_MAX_SUPPORTED_VERSION 51 |
0 | 38 #define JAVA_MAX_SUPPORTED_MINOR_VERSION 0 |
39 | |
40 // Used for two backward compatibility reasons: | |
41 // - to check for new additions to the class file format in JDK1.5 | |
42 // - to check for bug fixes in the format checker in JDK1.5 | |
43 #define JAVA_1_5_VERSION 49 | |
44 | |
45 // Used for backward compatibility reasons: | |
46 // - to check for javac bug fixes that happened after 1.5 | |
176
6b648fefb395
6705523: Fix for 6695506 will violate spec when used in JDK6
kamg
parents:
136
diff
changeset
|
47 // - also used as the max version when running in jdk6 |
0 | 48 #define JAVA_6_VERSION 50 |
49 | |
50 | |
51 void ClassFileParser::parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS) { | |
52 // Use a local copy of ClassFileStream. It helps the C++ compiler to optimize | |
53 // this function (_current can be allocated in a register, with scalar | |
54 // replacement of aggregates). The _current pointer is copied back to | |
55 // stream() when this function returns. DON'T call another method within | |
56 // this method that uses stream(). | |
57 ClassFileStream* cfs0 = stream(); | |
58 ClassFileStream cfs1 = *cfs0; | |
59 ClassFileStream* cfs = &cfs1; | |
60 #ifdef ASSERT | |
61 u1* old_current = cfs0->current(); | |
62 #endif | |
63 | |
64 // Used for batching symbol allocations. | |
65 const char* names[SymbolTable::symbol_alloc_batch_size]; | |
66 int lengths[SymbolTable::symbol_alloc_batch_size]; | |
67 int indices[SymbolTable::symbol_alloc_batch_size]; | |
68 unsigned int hashValues[SymbolTable::symbol_alloc_batch_size]; | |
69 int names_count = 0; | |
70 | |
71 // parsing Index 0 is unused | |
72 for (int index = 1; index < length; index++) { | |
73 // Each of the following case guarantees one more byte in the stream | |
74 // for the following tag or the access_flags following constant pool, | |
75 // so we don't need bounds-check for reading tag. | |
76 u1 tag = cfs->get_u1_fast(); | |
77 switch (tag) { | |
78 case JVM_CONSTANT_Class : | |
79 { | |
80 cfs->guarantee_more(3, CHECK); // name_index, tag/access_flags | |
81 u2 name_index = cfs->get_u2_fast(); | |
82 cp->klass_index_at_put(index, name_index); | |
83 } | |
84 break; | |
85 case JVM_CONSTANT_Fieldref : | |
86 { | |
87 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
88 u2 class_index = cfs->get_u2_fast(); | |
89 u2 name_and_type_index = cfs->get_u2_fast(); | |
90 cp->field_at_put(index, class_index, name_and_type_index); | |
91 } | |
92 break; | |
93 case JVM_CONSTANT_Methodref : | |
94 { | |
95 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
96 u2 class_index = cfs->get_u2_fast(); | |
97 u2 name_and_type_index = cfs->get_u2_fast(); | |
98 cp->method_at_put(index, class_index, name_and_type_index); | |
99 } | |
100 break; | |
101 case JVM_CONSTANT_InterfaceMethodref : | |
102 { | |
103 cfs->guarantee_more(5, CHECK); // class_index, name_and_type_index, tag/access_flags | |
104 u2 class_index = cfs->get_u2_fast(); | |
105 u2 name_and_type_index = cfs->get_u2_fast(); | |
106 cp->interface_method_at_put(index, class_index, name_and_type_index); | |
107 } | |
108 break; | |
109 case JVM_CONSTANT_String : | |
110 { | |
111 cfs->guarantee_more(3, CHECK); // string_index, tag/access_flags | |
112 u2 string_index = cfs->get_u2_fast(); | |
113 cp->string_index_at_put(index, string_index); | |
114 } | |
115 break; | |
1602 | 116 case JVM_CONSTANT_MethodHandle : |
117 case JVM_CONSTANT_MethodType : | |
118 if (!EnableMethodHandles || | |
119 _major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
120 classfile_parse_error( | |
121 (!EnableInvokeDynamic ? | |
122 "This JVM does not support constant tag %u in class file %s" : | |
123 "Class file version does not support constant tag %u in class file %s"), | |
124 tag, CHECK); | |
125 } | |
126 if (tag == JVM_CONSTANT_MethodHandle) { | |
127 cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags | |
128 u1 ref_kind = cfs->get_u1_fast(); | |
129 u2 method_index = cfs->get_u2_fast(); | |
130 cp->method_handle_index_at_put(index, ref_kind, method_index); | |
131 } else if (tag == JVM_CONSTANT_MethodType) { | |
132 cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags | |
133 u2 signature_index = cfs->get_u2_fast(); | |
134 cp->method_type_index_at_put(index, signature_index); | |
135 } else { | |
136 ShouldNotReachHere(); | |
137 } | |
138 break; | |
0 | 139 case JVM_CONSTANT_Integer : |
140 { | |
141 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
142 u4 bytes = cfs->get_u4_fast(); | |
143 cp->int_at_put(index, (jint) bytes); | |
144 } | |
145 break; | |
146 case JVM_CONSTANT_Float : | |
147 { | |
148 cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags | |
149 u4 bytes = cfs->get_u4_fast(); | |
150 cp->float_at_put(index, *(jfloat*)&bytes); | |
151 } | |
152 break; | |
153 case JVM_CONSTANT_Long : | |
154 // A mangled type might cause you to overrun allocated memory | |
155 guarantee_property(index+1 < length, | |
156 "Invalid constant pool entry %u in class file %s", | |
157 index, CHECK); | |
158 { | |
159 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
160 u8 bytes = cfs->get_u8_fast(); | |
161 cp->long_at_put(index, bytes); | |
162 } | |
163 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
164 break; | |
165 case JVM_CONSTANT_Double : | |
166 // A mangled type might cause you to overrun allocated memory | |
167 guarantee_property(index+1 < length, | |
168 "Invalid constant pool entry %u in class file %s", | |
169 index, CHECK); | |
170 { | |
171 cfs->guarantee_more(9, CHECK); // bytes, tag/access_flags | |
172 u8 bytes = cfs->get_u8_fast(); | |
173 cp->double_at_put(index, *(jdouble*)&bytes); | |
174 } | |
175 index++; // Skip entry following eigth-byte constant, see JVM book p. 98 | |
176 break; | |
177 case JVM_CONSTANT_NameAndType : | |
178 { | |
179 cfs->guarantee_more(5, CHECK); // name_index, signature_index, tag/access_flags | |
180 u2 name_index = cfs->get_u2_fast(); | |
181 u2 signature_index = cfs->get_u2_fast(); | |
182 cp->name_and_type_at_put(index, name_index, signature_index); | |
183 } | |
184 break; | |
185 case JVM_CONSTANT_Utf8 : | |
186 { | |
187 cfs->guarantee_more(2, CHECK); // utf8_length | |
188 u2 utf8_length = cfs->get_u2_fast(); | |
189 u1* utf8_buffer = cfs->get_u1_buffer(); | |
190 assert(utf8_buffer != NULL, "null utf8 buffer"); | |
191 // Got utf8 string, guarantee utf8_length+1 bytes, set stream position forward. | |
192 cfs->guarantee_more(utf8_length+1, CHECK); // utf8 string, tag/access_flags | |
193 cfs->skip_u1_fast(utf8_length); | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
194 |
0 | 195 // Before storing the symbol, make sure it's legal |
196 if (_need_verify) { | |
197 verify_legal_utf8((unsigned char*)utf8_buffer, utf8_length, CHECK); | |
198 } | |
199 | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
200 if (AnonymousClasses && has_cp_patch_at(index)) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
201 Handle patch = clear_cp_patch_at(index); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
202 guarantee_property(java_lang_String::is_instance(patch()), |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
203 "Illegal utf8 patch at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
204 index, CHECK); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
205 char* str = java_lang_String::as_utf8_string(patch()); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
206 // (could use java_lang_String::as_symbol instead, but might as well batch them) |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
207 utf8_buffer = (u1*) str; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
208 utf8_length = (int) strlen(str); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
209 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
210 |
0 | 211 unsigned int hash; |
212 symbolOop result = SymbolTable::lookup_only((char*)utf8_buffer, utf8_length, hash); | |
213 if (result == NULL) { | |
214 names[names_count] = (char*)utf8_buffer; | |
215 lengths[names_count] = utf8_length; | |
216 indices[names_count] = index; | |
217 hashValues[names_count++] = hash; | |
218 if (names_count == SymbolTable::symbol_alloc_batch_size) { | |
219 oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK); | |
220 names_count = 0; | |
221 } | |
222 } else { | |
223 cp->symbol_at_put(index, result); | |
224 } | |
225 } | |
226 break; | |
227 default: | |
228 classfile_parse_error( | |
229 "Unknown constant tag %u in class file %s", tag, CHECK); | |
230 break; | |
231 } | |
232 } | |
233 | |
234 // Allocate the remaining symbols | |
235 if (names_count > 0) { | |
236 oopFactory::new_symbols(cp, names_count, names, lengths, indices, hashValues, CHECK); | |
237 } | |
238 | |
239 // Copy _current pointer of local copy back to stream(). | |
240 #ifdef ASSERT | |
241 assert(cfs0->current() == old_current, "non-exclusive use of stream()"); | |
242 #endif | |
243 cfs0->set_current(cfs1.current()); | |
244 } | |
245 | |
246 bool inline valid_cp_range(int index, int length) { return (index > 0 && index < length); } | |
247 | |
248 constantPoolHandle ClassFileParser::parse_constant_pool(TRAPS) { | |
249 ClassFileStream* cfs = stream(); | |
250 constantPoolHandle nullHandle; | |
251 | |
252 cfs->guarantee_more(3, CHECK_(nullHandle)); // length, first cp tag | |
253 u2 length = cfs->get_u2_fast(); | |
254 guarantee_property( | |
255 length >= 1, "Illegal constant pool size %u in class file %s", | |
256 length, CHECK_(nullHandle)); | |
257 constantPoolOop constant_pool = | |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
474
diff
changeset
|
258 oopFactory::new_constantPool(length, |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
474
diff
changeset
|
259 methodOopDesc::IsSafeConc, |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
474
diff
changeset
|
260 CHECK_(nullHandle)); |
0 | 261 constantPoolHandle cp (THREAD, constant_pool); |
262 | |
263 cp->set_partially_loaded(); // Enables heap verify to work on partial constantPoolOops | |
264 | |
265 // parsing constant pool entries | |
266 parse_constant_pool_entries(cp, length, CHECK_(nullHandle)); | |
267 | |
268 int index = 1; // declared outside of loops for portability | |
269 | |
270 // first verification pass - validate cross references and fixup class and string constants | |
271 for (index = 1; index < length; index++) { // Index 0 is unused | |
272 switch (cp->tag_at(index).value()) { | |
273 case JVM_CONSTANT_Class : | |
274 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
275 break; | |
276 case JVM_CONSTANT_Fieldref : | |
277 // fall through | |
278 case JVM_CONSTANT_Methodref : | |
279 // fall through | |
280 case JVM_CONSTANT_InterfaceMethodref : { | |
281 if (!_need_verify) break; | |
282 int klass_ref_index = cp->klass_ref_index_at(index); | |
283 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
284 check_property(valid_cp_range(klass_ref_index, length) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
285 is_klass_reference(cp, klass_ref_index), |
0 | 286 "Invalid constant pool index %u in class file %s", |
287 klass_ref_index, | |
288 CHECK_(nullHandle)); | |
289 check_property(valid_cp_range(name_and_type_ref_index, length) && | |
290 cp->tag_at(name_and_type_ref_index).is_name_and_type(), | |
291 "Invalid constant pool index %u in class file %s", | |
292 name_and_type_ref_index, | |
293 CHECK_(nullHandle)); | |
294 break; | |
295 } | |
296 case JVM_CONSTANT_String : | |
297 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
298 break; | |
299 case JVM_CONSTANT_Integer : | |
300 break; | |
301 case JVM_CONSTANT_Float : | |
302 break; | |
303 case JVM_CONSTANT_Long : | |
304 case JVM_CONSTANT_Double : | |
305 index++; | |
306 check_property( | |
307 (index < length && cp->tag_at(index).is_invalid()), | |
308 "Improper constant pool long/double index %u in class file %s", | |
309 index, CHECK_(nullHandle)); | |
310 break; | |
311 case JVM_CONSTANT_NameAndType : { | |
312 if (!_need_verify) break; | |
313 int name_ref_index = cp->name_ref_index_at(index); | |
314 int signature_ref_index = cp->signature_ref_index_at(index); | |
315 check_property( | |
316 valid_cp_range(name_ref_index, length) && | |
317 cp->tag_at(name_ref_index).is_utf8(), | |
318 "Invalid constant pool index %u in class file %s", | |
319 name_ref_index, CHECK_(nullHandle)); | |
320 check_property( | |
321 valid_cp_range(signature_ref_index, length) && | |
322 cp->tag_at(signature_ref_index).is_utf8(), | |
323 "Invalid constant pool index %u in class file %s", | |
324 signature_ref_index, CHECK_(nullHandle)); | |
325 break; | |
326 } | |
327 case JVM_CONSTANT_Utf8 : | |
328 break; | |
329 case JVM_CONSTANT_UnresolvedClass : // fall-through | |
330 case JVM_CONSTANT_UnresolvedClassInError: | |
331 ShouldNotReachHere(); // Only JVM_CONSTANT_ClassIndex should be present | |
332 break; | |
333 case JVM_CONSTANT_ClassIndex : | |
334 { | |
335 int class_index = cp->klass_index_at(index); | |
336 check_property( | |
337 valid_cp_range(class_index, length) && | |
338 cp->tag_at(class_index).is_utf8(), | |
339 "Invalid constant pool index %u in class file %s", | |
340 class_index, CHECK_(nullHandle)); | |
341 cp->unresolved_klass_at_put(index, cp->symbol_at(class_index)); | |
342 } | |
343 break; | |
344 case JVM_CONSTANT_UnresolvedString : | |
345 ShouldNotReachHere(); // Only JVM_CONSTANT_StringIndex should be present | |
346 break; | |
347 case JVM_CONSTANT_StringIndex : | |
348 { | |
349 int string_index = cp->string_index_at(index); | |
350 check_property( | |
351 valid_cp_range(string_index, length) && | |
352 cp->tag_at(string_index).is_utf8(), | |
353 "Invalid constant pool index %u in class file %s", | |
354 string_index, CHECK_(nullHandle)); | |
355 symbolOop sym = cp->symbol_at(string_index); | |
356 cp->unresolved_string_at_put(index, sym); | |
357 } | |
358 break; | |
1602 | 359 case JVM_CONSTANT_MethodHandle : |
360 { | |
361 int ref_index = cp->method_handle_index_at(index); | |
362 check_property( | |
363 valid_cp_range(ref_index, length) && | |
364 EnableMethodHandles, | |
365 "Invalid constant pool index %u in class file %s", | |
366 ref_index, CHECK_(nullHandle)); | |
367 constantTag tag = cp->tag_at(ref_index); | |
368 int ref_kind = cp->method_handle_ref_kind_at(index); | |
369 switch (ref_kind) { | |
370 case JVM_REF_getField: | |
371 case JVM_REF_getStatic: | |
372 case JVM_REF_putField: | |
373 case JVM_REF_putStatic: | |
374 check_property( | |
375 tag.is_field(), | |
376 "Invalid constant pool index %u in class file %s (not a field)", | |
377 ref_index, CHECK_(nullHandle)); | |
378 break; | |
379 case JVM_REF_invokeVirtual: | |
380 case JVM_REF_invokeStatic: | |
381 case JVM_REF_invokeSpecial: | |
382 case JVM_REF_newInvokeSpecial: | |
383 check_property( | |
384 tag.is_method(), | |
385 "Invalid constant pool index %u in class file %s (not a method)", | |
386 ref_index, CHECK_(nullHandle)); | |
387 break; | |
388 case JVM_REF_invokeInterface: | |
389 check_property( | |
390 tag.is_interface_method(), | |
391 "Invalid constant pool index %u in class file %s (not an interface method)", | |
392 ref_index, CHECK_(nullHandle)); | |
393 break; | |
394 default: | |
395 classfile_parse_error( | |
396 "Bad method handle kind at constant pool index %u in class file %s", | |
397 index, CHECK_(nullHandle)); | |
398 } | |
399 // Keep the ref_index unchanged. It will be indirected at link-time. | |
400 } | |
401 break; | |
402 case JVM_CONSTANT_MethodType : | |
403 { | |
404 int ref_index = cp->method_type_index_at(index); | |
405 check_property( | |
406 valid_cp_range(ref_index, length) && | |
407 cp->tag_at(ref_index).is_utf8() && | |
408 EnableMethodHandles, | |
409 "Invalid constant pool index %u in class file %s", | |
410 ref_index, CHECK_(nullHandle)); | |
411 } | |
412 break; | |
0 | 413 default: |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1366
diff
changeset
|
414 fatal(err_msg("bad constant pool tag value %u", |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1366
diff
changeset
|
415 cp->tag_at(index).value())); |
0 | 416 ShouldNotReachHere(); |
417 break; | |
418 } // end of switch | |
419 } // end of for | |
420 | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
421 if (_cp_patches != NULL) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
422 // need to treat this_class specially... |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
423 assert(AnonymousClasses, ""); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
424 int this_class_index; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
425 { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
426 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
427 u1* mark = cfs->current(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
428 u2 flags = cfs->get_u2_fast(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
429 this_class_index = cfs->get_u2_fast(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
430 cfs->set_current(mark); // revert to mark |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
431 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
432 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
433 for (index = 1; index < length; index++) { // Index 0 is unused |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
434 if (has_cp_patch_at(index)) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
435 guarantee_property(index != this_class_index, |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
436 "Illegal constant pool patch to self at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
437 index, CHECK_(nullHandle)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
438 patch_constant_pool(cp, index, cp_patch_at(index), CHECK_(nullHandle)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
439 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
440 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
441 // Ensure that all the patches have been used. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
442 for (index = 0; index < _cp_patches->length(); index++) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
443 guarantee_property(!has_cp_patch_at(index), |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
444 "Unused constant pool patch at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
445 index, CHECK_(nullHandle)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
446 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
447 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
448 |
0 | 449 if (!_need_verify) { |
450 return cp; | |
451 } | |
452 | |
453 // second verification pass - checks the strings are of the right format. | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
454 // but not yet to the other entries |
0 | 455 for (index = 1; index < length; index++) { |
456 jbyte tag = cp->tag_at(index).value(); | |
457 switch (tag) { | |
458 case JVM_CONSTANT_UnresolvedClass: { | |
459 symbolHandle class_name(THREAD, cp->unresolved_klass_at(index)); | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
460 // check the name, even if _cp_patches will overwrite it |
0 | 461 verify_legal_class_name(class_name, CHECK_(nullHandle)); |
462 break; | |
463 } | |
464 case JVM_CONSTANT_Fieldref: | |
465 case JVM_CONSTANT_Methodref: | |
466 case JVM_CONSTANT_InterfaceMethodref: { | |
467 int name_and_type_ref_index = cp->name_and_type_ref_index_at(index); | |
468 // already verified to be utf8 | |
469 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
470 // already verified to be utf8 | |
471 int signature_ref_index = cp->signature_ref_index_at(name_and_type_ref_index); | |
472 symbolHandle name(THREAD, cp->symbol_at(name_ref_index)); | |
473 symbolHandle signature(THREAD, cp->symbol_at(signature_ref_index)); | |
474 if (tag == JVM_CONSTANT_Fieldref) { | |
475 verify_legal_field_name(name, CHECK_(nullHandle)); | |
476 verify_legal_field_signature(name, signature, CHECK_(nullHandle)); | |
477 } else { | |
478 verify_legal_method_name(name, CHECK_(nullHandle)); | |
479 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
480 if (tag == JVM_CONSTANT_Methodref) { | |
481 // 4509014: If a class method name begins with '<', it must be "<init>". | |
482 assert(!name.is_null(), "method name in constant pool is null"); | |
483 unsigned int name_len = name->utf8_length(); | |
484 assert(name_len > 0, "bad method name"); // already verified as legal name | |
485 if (name->byte_at(0) == '<') { | |
486 if (name() != vmSymbols::object_initializer_name()) { | |
487 classfile_parse_error( | |
488 "Bad method name at constant pool index %u in class file %s", | |
489 name_ref_index, CHECK_(nullHandle)); | |
490 } | |
491 } | |
492 } | |
493 } | |
494 break; | |
495 } | |
1602 | 496 case JVM_CONSTANT_MethodHandle: { |
497 int ref_index = cp->method_handle_index_at(index); | |
498 int ref_kind = cp->method_handle_ref_kind_at(index); | |
499 switch (ref_kind) { | |
500 case JVM_REF_invokeVirtual: | |
501 case JVM_REF_invokeStatic: | |
502 case JVM_REF_invokeSpecial: | |
503 case JVM_REF_newInvokeSpecial: | |
504 { | |
505 int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index); | |
506 int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index); | |
507 symbolHandle name(THREAD, cp->symbol_at(name_ref_index)); | |
508 if (ref_kind == JVM_REF_newInvokeSpecial) { | |
509 if (name() != vmSymbols::object_initializer_name()) { | |
510 classfile_parse_error( | |
511 "Bad constructor name at constant pool index %u in class file %s", | |
512 name_ref_index, CHECK_(nullHandle)); | |
513 } | |
514 } else { | |
515 if (name() == vmSymbols::object_initializer_name()) { | |
516 classfile_parse_error( | |
517 "Bad method name at constant pool index %u in class file %s", | |
518 name_ref_index, CHECK_(nullHandle)); | |
519 } | |
520 } | |
521 } | |
522 break; | |
523 // Other ref_kinds are already fully checked in previous pass. | |
524 } | |
525 break; | |
526 } | |
527 case JVM_CONSTANT_MethodType: { | |
528 symbolHandle no_name = vmSymbolHandles::type_name(); // place holder | |
529 symbolHandle signature(THREAD, cp->method_type_signature_at(index)); | |
530 verify_legal_method_signature(no_name, signature, CHECK_(nullHandle)); | |
531 break; | |
532 } | |
0 | 533 } // end of switch |
534 } // end of for | |
535 | |
536 return cp; | |
537 } | |
538 | |
539 | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
540 void ClassFileParser::patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
541 assert(AnonymousClasses, ""); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
542 BasicType patch_type = T_VOID; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
543 switch (cp->tag_at(index).value()) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
544 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
545 case JVM_CONSTANT_UnresolvedClass : |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
546 // Patching a class means pre-resolving it. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
547 // The name in the constant pool is ignored. |
1602 | 548 if (java_lang_Class::is_instance(patch())) { |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
549 guarantee_property(!java_lang_Class::is_primitive(patch()), |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
550 "Illegal class patch at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
551 index, CHECK); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
552 cp->klass_at_put(index, java_lang_Class::as_klassOop(patch())); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
553 } else { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
554 guarantee_property(java_lang_String::is_instance(patch()), |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
555 "Illegal class patch at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
556 index, CHECK); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
557 symbolHandle name = java_lang_String::as_symbol(patch(), CHECK); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
558 cp->unresolved_klass_at_put(index, name()); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
559 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
560 break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
561 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
562 case JVM_CONSTANT_UnresolvedString : |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
563 // Patching a string means pre-resolving it. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
564 // The spelling in the constant pool is ignored. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
565 // The constant reference may be any object whatever. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
566 // If it is not a real interned string, the constant is referred |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
567 // to as a "pseudo-string", and must be presented to the CP |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
568 // explicitly, because it may require scavenging. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
569 cp->pseudo_string_at_put(index, patch()); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
570 break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
571 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
572 case JVM_CONSTANT_Integer : patch_type = T_INT; goto patch_prim; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
573 case JVM_CONSTANT_Float : patch_type = T_FLOAT; goto patch_prim; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
574 case JVM_CONSTANT_Long : patch_type = T_LONG; goto patch_prim; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
575 case JVM_CONSTANT_Double : patch_type = T_DOUBLE; goto patch_prim; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
576 patch_prim: |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
577 { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
578 jvalue value; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
579 BasicType value_type = java_lang_boxing_object::get_value(patch(), &value); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
580 guarantee_property(value_type == patch_type, |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
581 "Illegal primitive patch at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
582 index, CHECK); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
583 switch (value_type) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
584 case T_INT: cp->int_at_put(index, value.i); break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
585 case T_FLOAT: cp->float_at_put(index, value.f); break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
586 case T_LONG: cp->long_at_put(index, value.j); break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
587 case T_DOUBLE: cp->double_at_put(index, value.d); break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
588 default: assert(false, ""); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
589 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
590 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
591 break; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
592 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
593 default: |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
594 // %%% TODO: put method handles into CONSTANT_InterfaceMethodref, etc. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
595 guarantee_property(!has_cp_patch_at(index), |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
596 "Illegal unexpected patch at %d in class file %s", |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
597 index, CHECK); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
598 return; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
599 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
600 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
601 // On fall-through, mark the patch as used. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
602 clear_cp_patch_at(index); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
603 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
604 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
605 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
606 |
0 | 607 class NameSigHash: public ResourceObj { |
608 public: | |
609 symbolOop _name; // name | |
610 symbolOop _sig; // signature | |
611 NameSigHash* _next; // Next entry in hash table | |
612 }; | |
613 | |
614 | |
615 #define HASH_ROW_SIZE 256 | |
616 | |
617 unsigned int hash(symbolOop name, symbolOop sig) { | |
618 unsigned int raw_hash = 0; | |
619 raw_hash += ((unsigned int)(uintptr_t)name) >> (LogHeapWordSize + 2); | |
620 raw_hash += ((unsigned int)(uintptr_t)sig) >> LogHeapWordSize; | |
621 | |
622 return (raw_hash + (unsigned int)(uintptr_t)name) % HASH_ROW_SIZE; | |
623 } | |
624 | |
625 | |
626 void initialize_hashtable(NameSigHash** table) { | |
627 memset((void*)table, 0, sizeof(NameSigHash*) * HASH_ROW_SIZE); | |
628 } | |
629 | |
630 // Return false if the name/sig combination is found in table. | |
631 // Return true if no duplicate is found. And name/sig is added as a new entry in table. | |
632 // The old format checker uses heap sort to find duplicates. | |
633 // NOTE: caller should guarantee that GC doesn't happen during the life cycle | |
634 // of table since we don't expect symbolOop's to move. | |
635 bool put_after_lookup(symbolOop name, symbolOop sig, NameSigHash** table) { | |
636 assert(name != NULL, "name in constant pool is NULL"); | |
637 | |
638 // First lookup for duplicates | |
639 int index = hash(name, sig); | |
640 NameSigHash* entry = table[index]; | |
641 while (entry != NULL) { | |
642 if (entry->_name == name && entry->_sig == sig) { | |
643 return false; | |
644 } | |
645 entry = entry->_next; | |
646 } | |
647 | |
648 // No duplicate is found, allocate a new entry and fill it. | |
649 entry = new NameSigHash(); | |
650 entry->_name = name; | |
651 entry->_sig = sig; | |
652 | |
653 // Insert into hash table | |
654 entry->_next = table[index]; | |
655 table[index] = entry; | |
656 | |
657 return true; | |
658 } | |
659 | |
660 | |
661 objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp, | |
662 int length, | |
663 Handle class_loader, | |
664 Handle protection_domain, | |
665 symbolHandle class_name, | |
666 TRAPS) { | |
667 ClassFileStream* cfs = stream(); | |
668 assert(length > 0, "only called for length>0"); | |
669 objArrayHandle nullHandle; | |
670 objArrayOop interface_oop = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
671 objArrayHandle interfaces (THREAD, interface_oop); | |
672 | |
673 int index; | |
674 for (index = 0; index < length; index++) { | |
675 u2 interface_index = cfs->get_u2(CHECK_(nullHandle)); | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
676 KlassHandle interf; |
0 | 677 check_property( |
678 valid_cp_range(interface_index, cp->length()) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
679 is_klass_reference(cp, interface_index), |
0 | 680 "Interface name has bad constant pool index %u in class file %s", |
681 interface_index, CHECK_(nullHandle)); | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
682 if (cp->tag_at(interface_index).is_klass()) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
683 interf = KlassHandle(THREAD, cp->resolved_klass_at(interface_index)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
684 } else { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
685 symbolHandle unresolved_klass (THREAD, cp->klass_name_at(interface_index)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
686 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
687 // Don't need to check legal name because it's checked when parsing constant pool. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
688 // But need to make sure it's not an array type. |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
689 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
690 "Bad interface name in class file %s", CHECK_(nullHandle)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
691 |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
692 // Call resolve_super so classcircularity is checked |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
693 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
694 unresolved_klass, class_loader, protection_domain, |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
695 false, CHECK_(nullHandle)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
696 interf = KlassHandle(THREAD, k); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
697 |
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
698 if (LinkWellKnownClasses) // my super type is well known to me |
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
699 cp->klass_at_put(interface_index, interf()); // eagerly resolve |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
700 } |
0 | 701 |
702 if (!Klass::cast(interf())->is_interface()) { | |
703 THROW_MSG_(vmSymbols::java_lang_IncompatibleClassChangeError(), "Implementing class", nullHandle); | |
704 } | |
705 interfaces->obj_at_put(index, interf()); | |
706 } | |
707 | |
708 if (!_need_verify || length <= 1) { | |
709 return interfaces; | |
710 } | |
711 | |
712 // Check if there's any duplicates in interfaces | |
713 ResourceMark rm(THREAD); | |
714 NameSigHash** interface_names = NEW_RESOURCE_ARRAY_IN_THREAD( | |
715 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
716 initialize_hashtable(interface_names); | |
717 bool dup = false; | |
718 { | |
719 debug_only(No_Safepoint_Verifier nsv;) | |
720 for (index = 0; index < length; index++) { | |
721 klassOop k = (klassOop)interfaces->obj_at(index); | |
722 symbolOop name = instanceKlass::cast(k)->name(); | |
723 // If no duplicates, add (name, NULL) in hashtable interface_names. | |
724 if (!put_after_lookup(name, NULL, interface_names)) { | |
725 dup = true; | |
726 break; | |
727 } | |
728 } | |
729 } | |
730 if (dup) { | |
731 classfile_parse_error("Duplicate interface name in class file %s", | |
732 CHECK_(nullHandle)); | |
733 } | |
734 | |
735 return interfaces; | |
736 } | |
737 | |
738 | |
739 void ClassFileParser::verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS) { | |
740 // Make sure the constant pool entry is of a type appropriate to this field | |
741 guarantee_property( | |
742 (constantvalue_index > 0 && | |
743 constantvalue_index < cp->length()), | |
744 "Bad initial value index %u in ConstantValue attribute in class file %s", | |
745 constantvalue_index, CHECK); | |
746 constantTag value_type = cp->tag_at(constantvalue_index); | |
747 switch ( cp->basic_type_for_signature_at(signature_index) ) { | |
748 case T_LONG: | |
749 guarantee_property(value_type.is_long(), "Inconsistent constant value type in class file %s", CHECK); | |
750 break; | |
751 case T_FLOAT: | |
752 guarantee_property(value_type.is_float(), "Inconsistent constant value type in class file %s", CHECK); | |
753 break; | |
754 case T_DOUBLE: | |
755 guarantee_property(value_type.is_double(), "Inconsistent constant value type in class file %s", CHECK); | |
756 break; | |
757 case T_BYTE: case T_CHAR: case T_SHORT: case T_BOOLEAN: case T_INT: | |
758 guarantee_property(value_type.is_int(), "Inconsistent constant value type in class file %s", CHECK); | |
759 break; | |
760 case T_OBJECT: | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1108
diff
changeset
|
761 guarantee_property((cp->symbol_at(signature_index)->equals("Ljava/lang/String;") |
0 | 762 && (value_type.is_string() || value_type.is_unresolved_string())), |
763 "Bad string initial value in class file %s", CHECK); | |
764 break; | |
765 default: | |
766 classfile_parse_error( | |
767 "Unable to set initial value %u in class file %s", | |
768 constantvalue_index, CHECK); | |
769 } | |
770 } | |
771 | |
772 | |
773 // Parse attributes for a field. | |
774 void ClassFileParser::parse_field_attributes(constantPoolHandle cp, | |
775 u2 attributes_count, | |
776 bool is_static, u2 signature_index, | |
777 u2* constantvalue_index_addr, | |
778 bool* is_synthetic_addr, | |
779 u2* generic_signature_index_addr, | |
780 typeArrayHandle* field_annotations, | |
781 TRAPS) { | |
782 ClassFileStream* cfs = stream(); | |
783 assert(attributes_count > 0, "length should be greater than 0"); | |
784 u2 constantvalue_index = 0; | |
785 u2 generic_signature_index = 0; | |
786 bool is_synthetic = false; | |
787 u1* runtime_visible_annotations = NULL; | |
788 int runtime_visible_annotations_length = 0; | |
789 u1* runtime_invisible_annotations = NULL; | |
790 int runtime_invisible_annotations_length = 0; | |
791 while (attributes_count--) { | |
792 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
793 u2 attribute_name_index = cfs->get_u2_fast(); | |
794 u4 attribute_length = cfs->get_u4_fast(); | |
795 check_property(valid_cp_range(attribute_name_index, cp->length()) && | |
796 cp->tag_at(attribute_name_index).is_utf8(), | |
797 "Invalid field attribute index %u in class file %s", | |
798 attribute_name_index, | |
799 CHECK); | |
800 symbolOop attribute_name = cp->symbol_at(attribute_name_index); | |
801 if (is_static && attribute_name == vmSymbols::tag_constant_value()) { | |
802 // ignore if non-static | |
803 if (constantvalue_index != 0) { | |
804 classfile_parse_error("Duplicate ConstantValue attribute in class file %s", CHECK); | |
805 } | |
806 check_property( | |
807 attribute_length == 2, | |
808 "Invalid ConstantValue field attribute length %u in class file %s", | |
809 attribute_length, CHECK); | |
810 constantvalue_index = cfs->get_u2(CHECK); | |
811 if (_need_verify) { | |
812 verify_constantvalue(constantvalue_index, signature_index, cp, CHECK); | |
813 } | |
814 } else if (attribute_name == vmSymbols::tag_synthetic()) { | |
815 if (attribute_length != 0) { | |
816 classfile_parse_error( | |
817 "Invalid Synthetic field attribute length %u in class file %s", | |
818 attribute_length, CHECK); | |
819 } | |
820 is_synthetic = true; | |
821 } else if (attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
822 if (attribute_length != 0) { | |
823 classfile_parse_error( | |
824 "Invalid Deprecated field attribute length %u in class file %s", | |
825 attribute_length, CHECK); | |
826 } | |
827 } else if (_major_version >= JAVA_1_5_VERSION) { | |
828 if (attribute_name == vmSymbols::tag_signature()) { | |
829 if (attribute_length != 2) { | |
830 classfile_parse_error( | |
831 "Wrong size %u for field's Signature attribute in class file %s", | |
832 attribute_length, CHECK); | |
833 } | |
834 generic_signature_index = cfs->get_u2(CHECK); | |
835 } else if (attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
836 runtime_visible_annotations_length = attribute_length; | |
837 runtime_visible_annotations = cfs->get_u1_buffer(); | |
838 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
839 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
840 } else if (PreserveAllAnnotations && attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
841 runtime_invisible_annotations_length = attribute_length; | |
842 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
843 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
844 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
845 } else { | |
846 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
847 } | |
848 } else { | |
849 cfs->skip_u1(attribute_length, CHECK); // Skip unknown attributes | |
850 } | |
851 } | |
852 | |
853 *constantvalue_index_addr = constantvalue_index; | |
854 *is_synthetic_addr = is_synthetic; | |
855 *generic_signature_index_addr = generic_signature_index; | |
856 *field_annotations = assemble_annotations(runtime_visible_annotations, | |
857 runtime_visible_annotations_length, | |
858 runtime_invisible_annotations, | |
859 runtime_invisible_annotations_length, | |
860 CHECK); | |
861 return; | |
862 } | |
863 | |
864 | |
865 // Field allocation types. Used for computing field offsets. | |
866 | |
867 enum FieldAllocationType { | |
868 STATIC_OOP, // Oops | |
869 STATIC_BYTE, // Boolean, Byte, char | |
870 STATIC_SHORT, // shorts | |
871 STATIC_WORD, // ints | |
872 STATIC_DOUBLE, // long or double | |
873 STATIC_ALIGNED_DOUBLE,// aligned long or double | |
874 NONSTATIC_OOP, | |
875 NONSTATIC_BYTE, | |
876 NONSTATIC_SHORT, | |
877 NONSTATIC_WORD, | |
878 NONSTATIC_DOUBLE, | |
879 NONSTATIC_ALIGNED_DOUBLE | |
880 }; | |
881 | |
882 | |
883 struct FieldAllocationCount { | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
884 unsigned int static_oop_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
885 unsigned int static_byte_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
886 unsigned int static_short_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
887 unsigned int static_word_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
888 unsigned int static_double_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
889 unsigned int nonstatic_oop_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
890 unsigned int nonstatic_byte_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
891 unsigned int nonstatic_short_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
892 unsigned int nonstatic_word_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
893 unsigned int nonstatic_double_count; |
0 | 894 }; |
895 | |
896 typeArrayHandle ClassFileParser::parse_fields(constantPoolHandle cp, bool is_interface, | |
897 struct FieldAllocationCount *fac, | |
898 objArrayHandle* fields_annotations, TRAPS) { | |
899 ClassFileStream* cfs = stream(); | |
900 typeArrayHandle nullHandle; | |
901 cfs->guarantee_more(2, CHECK_(nullHandle)); // length | |
902 u2 length = cfs->get_u2_fast(); | |
903 // Tuples of shorts [access, name index, sig index, initial value index, byte offset, generic signature index] | |
904 typeArrayOop new_fields = oopFactory::new_permanent_shortArray(length*instanceKlass::next_offset, CHECK_(nullHandle)); | |
905 typeArrayHandle fields(THREAD, new_fields); | |
906 | |
907 int index = 0; | |
908 typeArrayHandle field_annotations; | |
909 for (int n = 0; n < length; n++) { | |
910 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
911 | |
912 AccessFlags access_flags; | |
913 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
914 verify_legal_field_modifiers(flags, is_interface, CHECK_(nullHandle)); | |
915 access_flags.set_flags(flags); | |
916 | |
917 u2 name_index = cfs->get_u2_fast(); | |
918 int cp_size = cp->length(); | |
919 check_property( | |
920 valid_cp_range(name_index, cp_size) && cp->tag_at(name_index).is_utf8(), | |
921 "Invalid constant pool index %u for field name in class file %s", | |
922 name_index, CHECK_(nullHandle)); | |
923 symbolHandle name(THREAD, cp->symbol_at(name_index)); | |
924 verify_legal_field_name(name, CHECK_(nullHandle)); | |
925 | |
926 u2 signature_index = cfs->get_u2_fast(); | |
927 check_property( | |
928 valid_cp_range(signature_index, cp_size) && | |
929 cp->tag_at(signature_index).is_utf8(), | |
930 "Invalid constant pool index %u for field signature in class file %s", | |
931 signature_index, CHECK_(nullHandle)); | |
932 symbolHandle sig(THREAD, cp->symbol_at(signature_index)); | |
933 verify_legal_field_signature(name, sig, CHECK_(nullHandle)); | |
934 | |
935 u2 constantvalue_index = 0; | |
936 bool is_synthetic = false; | |
937 u2 generic_signature_index = 0; | |
938 bool is_static = access_flags.is_static(); | |
939 | |
940 u2 attributes_count = cfs->get_u2_fast(); | |
941 if (attributes_count > 0) { | |
942 parse_field_attributes(cp, attributes_count, is_static, signature_index, | |
943 &constantvalue_index, &is_synthetic, | |
944 &generic_signature_index, &field_annotations, | |
945 CHECK_(nullHandle)); | |
946 if (field_annotations.not_null()) { | |
947 if (fields_annotations->is_null()) { | |
948 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
949 *fields_annotations = objArrayHandle(THREAD, md); | |
950 } | |
951 (*fields_annotations)->obj_at_put(n, field_annotations()); | |
952 } | |
953 if (is_synthetic) { | |
954 access_flags.set_is_synthetic(); | |
955 } | |
956 } | |
957 | |
958 fields->short_at_put(index++, access_flags.as_short()); | |
959 fields->short_at_put(index++, name_index); | |
960 fields->short_at_put(index++, signature_index); | |
961 fields->short_at_put(index++, constantvalue_index); | |
962 | |
963 // Remember how many oops we encountered and compute allocation type | |
964 BasicType type = cp->basic_type_for_signature_at(signature_index); | |
965 FieldAllocationType atype; | |
966 if ( is_static ) { | |
967 switch ( type ) { | |
968 case T_BOOLEAN: | |
969 case T_BYTE: | |
970 fac->static_byte_count++; | |
971 atype = STATIC_BYTE; | |
972 break; | |
973 case T_LONG: | |
974 case T_DOUBLE: | |
975 if (Universe::field_type_should_be_aligned(type)) { | |
976 atype = STATIC_ALIGNED_DOUBLE; | |
977 } else { | |
978 atype = STATIC_DOUBLE; | |
979 } | |
980 fac->static_double_count++; | |
981 break; | |
982 case T_CHAR: | |
983 case T_SHORT: | |
984 fac->static_short_count++; | |
985 atype = STATIC_SHORT; | |
986 break; | |
987 case T_FLOAT: | |
988 case T_INT: | |
989 fac->static_word_count++; | |
990 atype = STATIC_WORD; | |
991 break; | |
992 case T_ARRAY: | |
993 case T_OBJECT: | |
994 fac->static_oop_count++; | |
995 atype = STATIC_OOP; | |
996 break; | |
997 case T_ADDRESS: | |
998 case T_VOID: | |
999 default: | |
1000 assert(0, "bad field type"); | |
1001 } | |
1002 } else { | |
1003 switch ( type ) { | |
1004 case T_BOOLEAN: | |
1005 case T_BYTE: | |
1006 fac->nonstatic_byte_count++; | |
1007 atype = NONSTATIC_BYTE; | |
1008 break; | |
1009 case T_LONG: | |
1010 case T_DOUBLE: | |
1011 if (Universe::field_type_should_be_aligned(type)) { | |
1012 atype = NONSTATIC_ALIGNED_DOUBLE; | |
1013 } else { | |
1014 atype = NONSTATIC_DOUBLE; | |
1015 } | |
1016 fac->nonstatic_double_count++; | |
1017 break; | |
1018 case T_CHAR: | |
1019 case T_SHORT: | |
1020 fac->nonstatic_short_count++; | |
1021 atype = NONSTATIC_SHORT; | |
1022 break; | |
1023 case T_FLOAT: | |
1024 case T_INT: | |
1025 fac->nonstatic_word_count++; | |
1026 atype = NONSTATIC_WORD; | |
1027 break; | |
1028 case T_ARRAY: | |
1029 case T_OBJECT: | |
1030 fac->nonstatic_oop_count++; | |
1031 atype = NONSTATIC_OOP; | |
1032 break; | |
1033 case T_ADDRESS: | |
1034 case T_VOID: | |
1035 default: | |
1036 assert(0, "bad field type"); | |
1037 } | |
1038 } | |
1039 | |
1040 // The correct offset is computed later (all oop fields will be located together) | |
1041 // We temporarily store the allocation type in the offset field | |
1042 fields->short_at_put(index++, atype); | |
1043 fields->short_at_put(index++, 0); // Clear out high word of byte offset | |
1044 fields->short_at_put(index++, generic_signature_index); | |
1045 } | |
1046 | |
1047 if (_need_verify && length > 1) { | |
1048 // Check duplicated fields | |
1049 ResourceMark rm(THREAD); | |
1050 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1051 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
1052 initialize_hashtable(names_and_sigs); | |
1053 bool dup = false; | |
1054 { | |
1055 debug_only(No_Safepoint_Verifier nsv;) | |
1056 for (int i = 0; i < length*instanceKlass::next_offset; i += instanceKlass::next_offset) { | |
1057 int name_index = fields->ushort_at(i + instanceKlass::name_index_offset); | |
1058 symbolOop name = cp->symbol_at(name_index); | |
1059 int sig_index = fields->ushort_at(i + instanceKlass::signature_index_offset); | |
1060 symbolOop sig = cp->symbol_at(sig_index); | |
1061 // If no duplicates, add name/signature in hashtable names_and_sigs. | |
1062 if (!put_after_lookup(name, sig, names_and_sigs)) { | |
1063 dup = true; | |
1064 break; | |
1065 } | |
1066 } | |
1067 } | |
1068 if (dup) { | |
1069 classfile_parse_error("Duplicate field name&signature in class file %s", | |
1070 CHECK_(nullHandle)); | |
1071 } | |
1072 } | |
1073 | |
1074 return fields; | |
1075 } | |
1076 | |
1077 | |
1078 static void copy_u2_with_conversion(u2* dest, u2* src, int length) { | |
1079 while (length-- > 0) { | |
1080 *dest++ = Bytes::get_Java_u2((u1*) (src++)); | |
1081 } | |
1082 } | |
1083 | |
1084 | |
1085 typeArrayHandle ClassFileParser::parse_exception_table(u4 code_length, | |
1086 u4 exception_table_length, | |
1087 constantPoolHandle cp, | |
1088 TRAPS) { | |
1089 ClassFileStream* cfs = stream(); | |
1090 typeArrayHandle nullHandle; | |
1091 | |
1092 // 4-tuples of ints [start_pc, end_pc, handler_pc, catch_type index] | |
1093 typeArrayOop eh = oopFactory::new_permanent_intArray(exception_table_length*4, CHECK_(nullHandle)); | |
1094 typeArrayHandle exception_handlers = typeArrayHandle(THREAD, eh); | |
1095 | |
1096 int index = 0; | |
1097 cfs->guarantee_more(8 * exception_table_length, CHECK_(nullHandle)); // start_pc, end_pc, handler_pc, catch_type_index | |
1098 for (unsigned int i = 0; i < exception_table_length; i++) { | |
1099 u2 start_pc = cfs->get_u2_fast(); | |
1100 u2 end_pc = cfs->get_u2_fast(); | |
1101 u2 handler_pc = cfs->get_u2_fast(); | |
1102 u2 catch_type_index = cfs->get_u2_fast(); | |
1103 // Will check legal target after parsing code array in verifier. | |
1104 if (_need_verify) { | |
1105 guarantee_property((start_pc < end_pc) && (end_pc <= code_length), | |
1106 "Illegal exception table range in class file %s", CHECK_(nullHandle)); | |
1107 guarantee_property(handler_pc < code_length, | |
1108 "Illegal exception table handler in class file %s", CHECK_(nullHandle)); | |
1109 if (catch_type_index != 0) { | |
1110 guarantee_property(valid_cp_range(catch_type_index, cp->length()) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
1111 is_klass_reference(cp, catch_type_index), |
0 | 1112 "Catch type in exception table has bad constant type in class file %s", CHECK_(nullHandle)); |
1113 } | |
1114 } | |
1115 exception_handlers->int_at_put(index++, start_pc); | |
1116 exception_handlers->int_at_put(index++, end_pc); | |
1117 exception_handlers->int_at_put(index++, handler_pc); | |
1118 exception_handlers->int_at_put(index++, catch_type_index); | |
1119 } | |
1120 return exception_handlers; | |
1121 } | |
1122 | |
1123 void ClassFileParser::parse_linenumber_table( | |
1124 u4 code_attribute_length, u4 code_length, | |
1125 CompressedLineNumberWriteStream** write_stream, TRAPS) { | |
1126 ClassFileStream* cfs = stream(); | |
1127 unsigned int num_entries = cfs->get_u2(CHECK); | |
1128 | |
1129 // Each entry is a u2 start_pc, and a u2 line_number | |
1130 unsigned int length_in_bytes = num_entries * (sizeof(u2) + sizeof(u2)); | |
1131 | |
1132 // Verify line number attribute and table length | |
1133 check_property( | |
1134 code_attribute_length == sizeof(u2) + length_in_bytes, | |
1135 "LineNumberTable attribute has wrong length in class file %s", CHECK); | |
1136 | |
1137 cfs->guarantee_more(length_in_bytes, CHECK); | |
1138 | |
1139 if ((*write_stream) == NULL) { | |
1140 if (length_in_bytes > fixed_buffer_size) { | |
1141 (*write_stream) = new CompressedLineNumberWriteStream(length_in_bytes); | |
1142 } else { | |
1143 (*write_stream) = new CompressedLineNumberWriteStream( | |
1144 linenumbertable_buffer, fixed_buffer_size); | |
1145 } | |
1146 } | |
1147 | |
1148 while (num_entries-- > 0) { | |
1149 u2 bci = cfs->get_u2_fast(); // start_pc | |
1150 u2 line = cfs->get_u2_fast(); // line_number | |
1151 guarantee_property(bci < code_length, | |
1152 "Invalid pc in LineNumberTable in class file %s", CHECK); | |
1153 (*write_stream)->write_pair(bci, line); | |
1154 } | |
1155 } | |
1156 | |
1157 | |
1158 // Class file LocalVariableTable elements. | |
1159 class Classfile_LVT_Element VALUE_OBJ_CLASS_SPEC { | |
1160 public: | |
1161 u2 start_bci; | |
1162 u2 length; | |
1163 u2 name_cp_index; | |
1164 u2 descriptor_cp_index; | |
1165 u2 slot; | |
1166 }; | |
1167 | |
1168 | |
1169 class LVT_Hash: public CHeapObj { | |
1170 public: | |
1171 LocalVariableTableElement *_elem; // element | |
1172 LVT_Hash* _next; // Next entry in hash table | |
1173 }; | |
1174 | |
1175 unsigned int hash(LocalVariableTableElement *elem) { | |
1176 unsigned int raw_hash = elem->start_bci; | |
1177 | |
1178 raw_hash = elem->length + raw_hash * 37; | |
1179 raw_hash = elem->name_cp_index + raw_hash * 37; | |
1180 raw_hash = elem->slot + raw_hash * 37; | |
1181 | |
1182 return raw_hash % HASH_ROW_SIZE; | |
1183 } | |
1184 | |
1185 void initialize_hashtable(LVT_Hash** table) { | |
1186 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1187 table[i] = NULL; | |
1188 } | |
1189 } | |
1190 | |
1191 void clear_hashtable(LVT_Hash** table) { | |
1192 for (int i = 0; i < HASH_ROW_SIZE; i++) { | |
1193 LVT_Hash* current = table[i]; | |
1194 LVT_Hash* next; | |
1195 while (current != NULL) { | |
1196 next = current->_next; | |
1197 current->_next = NULL; | |
1198 delete(current); | |
1199 current = next; | |
1200 } | |
1201 table[i] = NULL; | |
1202 } | |
1203 } | |
1204 | |
1205 LVT_Hash* LVT_lookup(LocalVariableTableElement *elem, int index, LVT_Hash** table) { | |
1206 LVT_Hash* entry = table[index]; | |
1207 | |
1208 /* | |
1209 * 3-tuple start_bci/length/slot has to be unique key, | |
1210 * so the following comparison seems to be redundant: | |
1211 * && elem->name_cp_index == entry->_elem->name_cp_index | |
1212 */ | |
1213 while (entry != NULL) { | |
1214 if (elem->start_bci == entry->_elem->start_bci | |
1215 && elem->length == entry->_elem->length | |
1216 && elem->name_cp_index == entry->_elem->name_cp_index | |
1217 && elem->slot == entry->_elem->slot | |
1218 ) { | |
1219 return entry; | |
1220 } | |
1221 entry = entry->_next; | |
1222 } | |
1223 return NULL; | |
1224 } | |
1225 | |
1226 // Return false if the local variable is found in table. | |
1227 // Return true if no duplicate is found. | |
1228 // And local variable is added as a new entry in table. | |
1229 bool LVT_put_after_lookup(LocalVariableTableElement *elem, LVT_Hash** table) { | |
1230 // First lookup for duplicates | |
1231 int index = hash(elem); | |
1232 LVT_Hash* entry = LVT_lookup(elem, index, table); | |
1233 | |
1234 if (entry != NULL) { | |
1235 return false; | |
1236 } | |
1237 // No duplicate is found, allocate a new entry and fill it. | |
1238 if ((entry = new LVT_Hash()) == NULL) { | |
1239 return false; | |
1240 } | |
1241 entry->_elem = elem; | |
1242 | |
1243 // Insert into hash table | |
1244 entry->_next = table[index]; | |
1245 table[index] = entry; | |
1246 | |
1247 return true; | |
1248 } | |
1249 | |
1250 void copy_lvt_element(Classfile_LVT_Element *src, LocalVariableTableElement *lvt) { | |
1251 lvt->start_bci = Bytes::get_Java_u2((u1*) &src->start_bci); | |
1252 lvt->length = Bytes::get_Java_u2((u1*) &src->length); | |
1253 lvt->name_cp_index = Bytes::get_Java_u2((u1*) &src->name_cp_index); | |
1254 lvt->descriptor_cp_index = Bytes::get_Java_u2((u1*) &src->descriptor_cp_index); | |
1255 lvt->signature_cp_index = 0; | |
1256 lvt->slot = Bytes::get_Java_u2((u1*) &src->slot); | |
1257 } | |
1258 | |
1259 // Function is used to parse both attributes: | |
1260 // LocalVariableTable (LVT) and LocalVariableTypeTable (LVTT) | |
1261 u2* ClassFileParser::parse_localvariable_table(u4 code_length, | |
1262 u2 max_locals, | |
1263 u4 code_attribute_length, | |
1264 constantPoolHandle cp, | |
1265 u2* localvariable_table_length, | |
1266 bool isLVTT, | |
1267 TRAPS) { | |
1268 ClassFileStream* cfs = stream(); | |
1269 const char * tbl_name = (isLVTT) ? "LocalVariableTypeTable" : "LocalVariableTable"; | |
1270 *localvariable_table_length = cfs->get_u2(CHECK_NULL); | |
1271 unsigned int size = (*localvariable_table_length) * sizeof(Classfile_LVT_Element) / sizeof(u2); | |
1272 // Verify local variable table attribute has right length | |
1273 if (_need_verify) { | |
1274 guarantee_property(code_attribute_length == (sizeof(*localvariable_table_length) + size * sizeof(u2)), | |
1275 "%s has wrong length in class file %s", tbl_name, CHECK_NULL); | |
1276 } | |
1277 u2* localvariable_table_start = cfs->get_u2_buffer(); | |
1278 assert(localvariable_table_start != NULL, "null local variable table"); | |
1279 if (!_need_verify) { | |
1280 cfs->skip_u2_fast(size); | |
1281 } else { | |
1282 cfs->guarantee_more(size * 2, CHECK_NULL); | |
1283 for(int i = 0; i < (*localvariable_table_length); i++) { | |
1284 u2 start_pc = cfs->get_u2_fast(); | |
1285 u2 length = cfs->get_u2_fast(); | |
1286 u2 name_index = cfs->get_u2_fast(); | |
1287 u2 descriptor_index = cfs->get_u2_fast(); | |
1288 u2 index = cfs->get_u2_fast(); | |
1289 // Assign to a u4 to avoid overflow | |
1290 u4 end_pc = (u4)start_pc + (u4)length; | |
1291 | |
1292 if (start_pc >= code_length) { | |
1293 classfile_parse_error( | |
1294 "Invalid start_pc %u in %s in class file %s", | |
1295 start_pc, tbl_name, CHECK_NULL); | |
1296 } | |
1297 if (end_pc > code_length) { | |
1298 classfile_parse_error( | |
1299 "Invalid length %u in %s in class file %s", | |
1300 length, tbl_name, CHECK_NULL); | |
1301 } | |
1302 int cp_size = cp->length(); | |
1303 guarantee_property( | |
1304 valid_cp_range(name_index, cp_size) && | |
1305 cp->tag_at(name_index).is_utf8(), | |
1306 "Name index %u in %s has bad constant type in class file %s", | |
1307 name_index, tbl_name, CHECK_NULL); | |
1308 guarantee_property( | |
1309 valid_cp_range(descriptor_index, cp_size) && | |
1310 cp->tag_at(descriptor_index).is_utf8(), | |
1311 "Signature index %u in %s has bad constant type in class file %s", | |
1312 descriptor_index, tbl_name, CHECK_NULL); | |
1313 | |
1314 symbolHandle name(THREAD, cp->symbol_at(name_index)); | |
1315 symbolHandle sig(THREAD, cp->symbol_at(descriptor_index)); | |
1316 verify_legal_field_name(name, CHECK_NULL); | |
1317 u2 extra_slot = 0; | |
1318 if (!isLVTT) { | |
1319 verify_legal_field_signature(name, sig, CHECK_NULL); | |
1320 | |
1321 // 4894874: check special cases for double and long local variables | |
1322 if (sig() == vmSymbols::type_signature(T_DOUBLE) || | |
1323 sig() == vmSymbols::type_signature(T_LONG)) { | |
1324 extra_slot = 1; | |
1325 } | |
1326 } | |
1327 guarantee_property((index + extra_slot) < max_locals, | |
1328 "Invalid index %u in %s in class file %s", | |
1329 index, tbl_name, CHECK_NULL); | |
1330 } | |
1331 } | |
1332 return localvariable_table_start; | |
1333 } | |
1334 | |
1335 | |
1336 void ClassFileParser::parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
1337 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS) { | |
1338 ClassFileStream* cfs = stream(); | |
1339 u2 index = 0; // index in the array with long/double occupying two slots | |
1340 u4 i1 = *u1_index; | |
1341 u4 i2 = *u2_index + 1; | |
1342 for(int i = 0; i < array_length; i++) { | |
1343 u1 tag = u1_array[i1++] = cfs->get_u1(CHECK); | |
1344 index++; | |
1345 if (tag == ITEM_Long || tag == ITEM_Double) { | |
1346 index++; | |
1347 } else if (tag == ITEM_Object) { | |
1348 u2 class_index = u2_array[i2++] = cfs->get_u2(CHECK); | |
1349 guarantee_property(valid_cp_range(class_index, cp->length()) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
1350 is_klass_reference(cp, class_index), |
0 | 1351 "Bad class index %u in StackMap in class file %s", |
1352 class_index, CHECK); | |
1353 } else if (tag == ITEM_Uninitialized) { | |
1354 u2 offset = u2_array[i2++] = cfs->get_u2(CHECK); | |
1355 guarantee_property( | |
1356 offset < code_length, | |
1357 "Bad uninitialized type offset %u in StackMap in class file %s", | |
1358 offset, CHECK); | |
1359 } else { | |
1360 guarantee_property( | |
1361 tag <= (u1)ITEM_Uninitialized, | |
1362 "Unknown variable type %u in StackMap in class file %s", | |
1363 tag, CHECK); | |
1364 } | |
1365 } | |
1366 u2_array[*u2_index] = index; | |
1367 *u1_index = i1; | |
1368 *u2_index = i2; | |
1369 } | |
1370 | |
1371 typeArrayOop ClassFileParser::parse_stackmap_table( | |
1372 u4 code_attribute_length, TRAPS) { | |
1373 if (code_attribute_length == 0) | |
1374 return NULL; | |
1375 | |
1376 ClassFileStream* cfs = stream(); | |
1377 u1* stackmap_table_start = cfs->get_u1_buffer(); | |
1378 assert(stackmap_table_start != NULL, "null stackmap table"); | |
1379 | |
1380 // check code_attribute_length first | |
1381 stream()->skip_u1(code_attribute_length, CHECK_NULL); | |
1382 | |
1383 if (!_need_verify && !DumpSharedSpaces) { | |
1384 return NULL; | |
1385 } | |
1386 | |
1387 typeArrayOop stackmap_data = | |
1388 oopFactory::new_permanent_byteArray(code_attribute_length, CHECK_NULL); | |
1389 | |
1390 stackmap_data->set_length(code_attribute_length); | |
1391 memcpy((void*)stackmap_data->byte_at_addr(0), | |
1392 (void*)stackmap_table_start, code_attribute_length); | |
1393 return stackmap_data; | |
1394 } | |
1395 | |
1396 u2* ClassFileParser::parse_checked_exceptions(u2* checked_exceptions_length, | |
1397 u4 method_attribute_length, | |
1398 constantPoolHandle cp, TRAPS) { | |
1399 ClassFileStream* cfs = stream(); | |
1400 cfs->guarantee_more(2, CHECK_NULL); // checked_exceptions_length | |
1401 *checked_exceptions_length = cfs->get_u2_fast(); | |
1402 unsigned int size = (*checked_exceptions_length) * sizeof(CheckedExceptionElement) / sizeof(u2); | |
1403 u2* checked_exceptions_start = cfs->get_u2_buffer(); | |
1404 assert(checked_exceptions_start != NULL, "null checked exceptions"); | |
1405 if (!_need_verify) { | |
1406 cfs->skip_u2_fast(size); | |
1407 } else { | |
1408 // Verify each value in the checked exception table | |
1409 u2 checked_exception; | |
1410 u2 len = *checked_exceptions_length; | |
1411 cfs->guarantee_more(2 * len, CHECK_NULL); | |
1412 for (int i = 0; i < len; i++) { | |
1413 checked_exception = cfs->get_u2_fast(); | |
1414 check_property( | |
1415 valid_cp_range(checked_exception, cp->length()) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
1416 is_klass_reference(cp, checked_exception), |
0 | 1417 "Exception name has bad type at constant pool %u in class file %s", |
1418 checked_exception, CHECK_NULL); | |
1419 } | |
1420 } | |
1421 // check exceptions attribute length | |
1422 if (_need_verify) { | |
1423 guarantee_property(method_attribute_length == (sizeof(*checked_exceptions_length) + | |
1424 sizeof(u2) * size), | |
1425 "Exceptions attribute has wrong length in class file %s", CHECK_NULL); | |
1426 } | |
1427 return checked_exceptions_start; | |
1428 } | |
1429 | |
1430 | |
1431 #define MAX_ARGS_SIZE 255 | |
1432 #define MAX_CODE_SIZE 65535 | |
1433 #define INITIAL_MAX_LVT_NUMBER 256 | |
1434 | |
1435 // Note: the parse_method below is big and clunky because all parsing of the code and exceptions | |
1436 // attribute is inlined. This is curbersome to avoid since we inline most of the parts in the | |
1437 // methodOop to save footprint, so we only know the size of the resulting methodOop when the | |
1438 // entire method attribute is parsed. | |
1439 // | |
1440 // The promoted_flags parameter is used to pass relevant access_flags | |
1441 // from the method back up to the containing klass. These flag values | |
1442 // are added to klass's access_flags. | |
1443 | |
1444 methodHandle ClassFileParser::parse_method(constantPoolHandle cp, bool is_interface, | |
1445 AccessFlags *promoted_flags, | |
1446 typeArrayHandle* method_annotations, | |
1447 typeArrayHandle* method_parameter_annotations, | |
1448 typeArrayHandle* method_default_annotations, | |
1449 TRAPS) { | |
1450 ClassFileStream* cfs = stream(); | |
1451 methodHandle nullHandle; | |
1452 ResourceMark rm(THREAD); | |
1453 // Parse fixed parts | |
1454 cfs->guarantee_more(8, CHECK_(nullHandle)); // access_flags, name_index, descriptor_index, attributes_count | |
1455 | |
1456 int flags = cfs->get_u2_fast(); | |
1457 u2 name_index = cfs->get_u2_fast(); | |
1458 int cp_size = cp->length(); | |
1459 check_property( | |
1460 valid_cp_range(name_index, cp_size) && | |
1461 cp->tag_at(name_index).is_utf8(), | |
1462 "Illegal constant pool index %u for method name in class file %s", | |
1463 name_index, CHECK_(nullHandle)); | |
1464 symbolHandle name(THREAD, cp->symbol_at(name_index)); | |
1465 verify_legal_method_name(name, CHECK_(nullHandle)); | |
1466 | |
1467 u2 signature_index = cfs->get_u2_fast(); | |
1468 guarantee_property( | |
1469 valid_cp_range(signature_index, cp_size) && | |
1470 cp->tag_at(signature_index).is_utf8(), | |
1471 "Illegal constant pool index %u for method signature in class file %s", | |
1472 signature_index, CHECK_(nullHandle)); | |
1473 symbolHandle signature(THREAD, cp->symbol_at(signature_index)); | |
1474 | |
1475 AccessFlags access_flags; | |
1476 if (name == vmSymbols::class_initializer_name()) { | |
1477 // We ignore the access flags for a class initializer. (JVM Spec. p. 116) | |
1478 flags = JVM_ACC_STATIC; | |
1479 } else { | |
1480 verify_legal_method_modifiers(flags, is_interface, name, CHECK_(nullHandle)); | |
1481 } | |
1482 | |
1483 int args_size = -1; // only used when _need_verify is true | |
1484 if (_need_verify) { | |
1485 args_size = ((flags & JVM_ACC_STATIC) ? 0 : 1) + | |
1486 verify_legal_method_signature(name, signature, CHECK_(nullHandle)); | |
1487 if (args_size > MAX_ARGS_SIZE) { | |
1488 classfile_parse_error("Too many arguments in method signature in class file %s", CHECK_(nullHandle)); | |
1489 } | |
1490 } | |
1491 | |
1492 access_flags.set_flags(flags & JVM_RECOGNIZED_METHOD_MODIFIERS); | |
1493 | |
1494 // Default values for code and exceptions attribute elements | |
1495 u2 max_stack = 0; | |
1496 u2 max_locals = 0; | |
1497 u4 code_length = 0; | |
1498 u1* code_start = 0; | |
1499 u2 exception_table_length = 0; | |
1500 typeArrayHandle exception_handlers(THREAD, Universe::the_empty_int_array()); | |
1501 u2 checked_exceptions_length = 0; | |
1502 u2* checked_exceptions_start = NULL; | |
1503 CompressedLineNumberWriteStream* linenumber_table = NULL; | |
1504 int linenumber_table_length = 0; | |
1505 int total_lvt_length = 0; | |
1506 u2 lvt_cnt = 0; | |
1507 u2 lvtt_cnt = 0; | |
1508 bool lvt_allocated = false; | |
1509 u2 max_lvt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1510 u2 max_lvtt_cnt = INITIAL_MAX_LVT_NUMBER; | |
1511 u2* localvariable_table_length; | |
1512 u2** localvariable_table_start; | |
1513 u2* localvariable_type_table_length; | |
1514 u2** localvariable_type_table_start; | |
1515 bool parsed_code_attribute = false; | |
1516 bool parsed_checked_exceptions_attribute = false; | |
1517 bool parsed_stackmap_attribute = false; | |
1518 // stackmap attribute - JDK1.5 | |
1519 typeArrayHandle stackmap_data; | |
1520 u2 generic_signature_index = 0; | |
1521 u1* runtime_visible_annotations = NULL; | |
1522 int runtime_visible_annotations_length = 0; | |
1523 u1* runtime_invisible_annotations = NULL; | |
1524 int runtime_invisible_annotations_length = 0; | |
1525 u1* runtime_visible_parameter_annotations = NULL; | |
1526 int runtime_visible_parameter_annotations_length = 0; | |
1527 u1* runtime_invisible_parameter_annotations = NULL; | |
1528 int runtime_invisible_parameter_annotations_length = 0; | |
1529 u1* annotation_default = NULL; | |
1530 int annotation_default_length = 0; | |
1531 | |
1532 // Parse code and exceptions attribute | |
1533 u2 method_attributes_count = cfs->get_u2_fast(); | |
1534 while (method_attributes_count--) { | |
1535 cfs->guarantee_more(6, CHECK_(nullHandle)); // method_attribute_name_index, method_attribute_length | |
1536 u2 method_attribute_name_index = cfs->get_u2_fast(); | |
1537 u4 method_attribute_length = cfs->get_u4_fast(); | |
1538 check_property( | |
1539 valid_cp_range(method_attribute_name_index, cp_size) && | |
1540 cp->tag_at(method_attribute_name_index).is_utf8(), | |
1541 "Invalid method attribute name index %u in class file %s", | |
1542 method_attribute_name_index, CHECK_(nullHandle)); | |
1543 | |
1544 symbolOop method_attribute_name = cp->symbol_at(method_attribute_name_index); | |
1545 if (method_attribute_name == vmSymbols::tag_code()) { | |
1546 // Parse Code attribute | |
1547 if (_need_verify) { | |
1548 guarantee_property(!access_flags.is_native() && !access_flags.is_abstract(), | |
1549 "Code attribute in native or abstract methods in class file %s", | |
1550 CHECK_(nullHandle)); | |
1551 } | |
1552 if (parsed_code_attribute) { | |
1553 classfile_parse_error("Multiple Code attributes in class file %s", CHECK_(nullHandle)); | |
1554 } | |
1555 parsed_code_attribute = true; | |
1556 | |
1557 // Stack size, locals size, and code size | |
1558 if (_major_version == 45 && _minor_version <= 2) { | |
1559 cfs->guarantee_more(4, CHECK_(nullHandle)); | |
1560 max_stack = cfs->get_u1_fast(); | |
1561 max_locals = cfs->get_u1_fast(); | |
1562 code_length = cfs->get_u2_fast(); | |
1563 } else { | |
1564 cfs->guarantee_more(8, CHECK_(nullHandle)); | |
1565 max_stack = cfs->get_u2_fast(); | |
1566 max_locals = cfs->get_u2_fast(); | |
1567 code_length = cfs->get_u4_fast(); | |
1568 } | |
1569 if (_need_verify) { | |
1570 guarantee_property(args_size <= max_locals, | |
1571 "Arguments can't fit into locals in class file %s", CHECK_(nullHandle)); | |
1572 guarantee_property(code_length > 0 && code_length <= MAX_CODE_SIZE, | |
1573 "Invalid method Code length %u in class file %s", | |
1574 code_length, CHECK_(nullHandle)); | |
1575 } | |
1576 // Code pointer | |
1577 code_start = cfs->get_u1_buffer(); | |
1578 assert(code_start != NULL, "null code start"); | |
1579 cfs->guarantee_more(code_length, CHECK_(nullHandle)); | |
1580 cfs->skip_u1_fast(code_length); | |
1581 | |
1582 // Exception handler table | |
1583 cfs->guarantee_more(2, CHECK_(nullHandle)); // exception_table_length | |
1584 exception_table_length = cfs->get_u2_fast(); | |
1585 if (exception_table_length > 0) { | |
1586 exception_handlers = | |
1587 parse_exception_table(code_length, exception_table_length, cp, CHECK_(nullHandle)); | |
1588 } | |
1589 | |
1590 // Parse additional attributes in code attribute | |
1591 cfs->guarantee_more(2, CHECK_(nullHandle)); // code_attributes_count | |
1592 u2 code_attributes_count = cfs->get_u2_fast(); | |
92
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1593 |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1594 unsigned int calculated_attribute_length = 0; |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1595 |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1596 if (_major_version > 45 || (_major_version == 45 && _minor_version > 2)) { |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1597 calculated_attribute_length = |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1598 sizeof(max_stack) + sizeof(max_locals) + sizeof(code_length); |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1599 } else { |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1600 // max_stack, locals and length are smaller in pre-version 45.2 classes |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1601 calculated_attribute_length = sizeof(u1) + sizeof(u1) + sizeof(u2); |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1602 } |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1603 calculated_attribute_length += |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1604 code_length + |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1605 sizeof(exception_table_length) + |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1606 sizeof(code_attributes_count) + |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1607 exception_table_length * |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1608 ( sizeof(u2) + // start_pc |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1609 sizeof(u2) + // end_pc |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1610 sizeof(u2) + // handler_pc |
ebec5b9731e2
6615981: JVM class file parser incorrectly rejects class files with version < 45.2
kamg
parents:
0
diff
changeset
|
1611 sizeof(u2) ); // catch_type_index |
0 | 1612 |
1613 while (code_attributes_count--) { | |
1614 cfs->guarantee_more(6, CHECK_(nullHandle)); // code_attribute_name_index, code_attribute_length | |
1615 u2 code_attribute_name_index = cfs->get_u2_fast(); | |
1616 u4 code_attribute_length = cfs->get_u4_fast(); | |
1617 calculated_attribute_length += code_attribute_length + | |
1618 sizeof(code_attribute_name_index) + | |
1619 sizeof(code_attribute_length); | |
1620 check_property(valid_cp_range(code_attribute_name_index, cp_size) && | |
1621 cp->tag_at(code_attribute_name_index).is_utf8(), | |
1622 "Invalid code attribute name index %u in class file %s", | |
1623 code_attribute_name_index, | |
1624 CHECK_(nullHandle)); | |
1625 if (LoadLineNumberTables && | |
1626 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_line_number_table()) { | |
1627 // Parse and compress line number table | |
1628 parse_linenumber_table(code_attribute_length, code_length, | |
1629 &linenumber_table, CHECK_(nullHandle)); | |
1630 | |
1631 } else if (LoadLocalVariableTables && | |
1632 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_table()) { | |
1633 // Parse local variable table | |
1634 if (!lvt_allocated) { | |
1635 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1636 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1637 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1638 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1639 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1640 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1641 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1642 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1643 lvt_allocated = true; | |
1644 } | |
1645 if (lvt_cnt == max_lvt_cnt) { | |
1646 max_lvt_cnt <<= 1; | |
1647 REALLOC_RESOURCE_ARRAY(u2, localvariable_table_length, lvt_cnt, max_lvt_cnt); | |
1648 REALLOC_RESOURCE_ARRAY(u2*, localvariable_table_start, lvt_cnt, max_lvt_cnt); | |
1649 } | |
1650 localvariable_table_start[lvt_cnt] = | |
1651 parse_localvariable_table(code_length, | |
1652 max_locals, | |
1653 code_attribute_length, | |
1654 cp, | |
1655 &localvariable_table_length[lvt_cnt], | |
1656 false, // is not LVTT | |
1657 CHECK_(nullHandle)); | |
1658 total_lvt_length += localvariable_table_length[lvt_cnt]; | |
1659 lvt_cnt++; | |
1660 } else if (LoadLocalVariableTypeTables && | |
1661 _major_version >= JAVA_1_5_VERSION && | |
1662 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_local_variable_type_table()) { | |
1663 if (!lvt_allocated) { | |
1664 localvariable_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1665 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1666 localvariable_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1667 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1668 localvariable_type_table_length = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1669 THREAD, u2, INITIAL_MAX_LVT_NUMBER); | |
1670 localvariable_type_table_start = NEW_RESOURCE_ARRAY_IN_THREAD( | |
1671 THREAD, u2*, INITIAL_MAX_LVT_NUMBER); | |
1672 lvt_allocated = true; | |
1673 } | |
1674 // Parse local variable type table | |
1675 if (lvtt_cnt == max_lvtt_cnt) { | |
1676 max_lvtt_cnt <<= 1; | |
1677 REALLOC_RESOURCE_ARRAY(u2, localvariable_type_table_length, lvtt_cnt, max_lvtt_cnt); | |
1678 REALLOC_RESOURCE_ARRAY(u2*, localvariable_type_table_start, lvtt_cnt, max_lvtt_cnt); | |
1679 } | |
1680 localvariable_type_table_start[lvtt_cnt] = | |
1681 parse_localvariable_table(code_length, | |
1682 max_locals, | |
1683 code_attribute_length, | |
1684 cp, | |
1685 &localvariable_type_table_length[lvtt_cnt], | |
1686 true, // is LVTT | |
1687 CHECK_(nullHandle)); | |
1688 lvtt_cnt++; | |
1689 } else if (UseSplitVerifier && | |
1690 _major_version >= Verifier::STACKMAP_ATTRIBUTE_MAJOR_VERSION && | |
1691 cp->symbol_at(code_attribute_name_index) == vmSymbols::tag_stack_map_table()) { | |
1692 // Stack map is only needed by the new verifier in JDK1.5. | |
1693 if (parsed_stackmap_attribute) { | |
1694 classfile_parse_error("Multiple StackMapTable attributes in class file %s", CHECK_(nullHandle)); | |
1695 } | |
1696 typeArrayOop sm = | |
1697 parse_stackmap_table(code_attribute_length, CHECK_(nullHandle)); | |
1698 stackmap_data = typeArrayHandle(THREAD, sm); | |
1699 parsed_stackmap_attribute = true; | |
1700 } else { | |
1701 // Skip unknown attributes | |
1702 cfs->skip_u1(code_attribute_length, CHECK_(nullHandle)); | |
1703 } | |
1704 } | |
1705 // check method attribute length | |
1706 if (_need_verify) { | |
1707 guarantee_property(method_attribute_length == calculated_attribute_length, | |
1708 "Code segment has wrong length in class file %s", CHECK_(nullHandle)); | |
1709 } | |
1710 } else if (method_attribute_name == vmSymbols::tag_exceptions()) { | |
1711 // Parse Exceptions attribute | |
1712 if (parsed_checked_exceptions_attribute) { | |
1713 classfile_parse_error("Multiple Exceptions attributes in class file %s", CHECK_(nullHandle)); | |
1714 } | |
1715 parsed_checked_exceptions_attribute = true; | |
1716 checked_exceptions_start = | |
1717 parse_checked_exceptions(&checked_exceptions_length, | |
1718 method_attribute_length, | |
1719 cp, CHECK_(nullHandle)); | |
1720 } else if (method_attribute_name == vmSymbols::tag_synthetic()) { | |
1721 if (method_attribute_length != 0) { | |
1722 classfile_parse_error( | |
1723 "Invalid Synthetic method attribute length %u in class file %s", | |
1724 method_attribute_length, CHECK_(nullHandle)); | |
1725 } | |
1726 // Should we check that there hasn't already been a synthetic attribute? | |
1727 access_flags.set_is_synthetic(); | |
1728 } else if (method_attribute_name == vmSymbols::tag_deprecated()) { // 4276120 | |
1729 if (method_attribute_length != 0) { | |
1730 classfile_parse_error( | |
1731 "Invalid Deprecated method attribute length %u in class file %s", | |
1732 method_attribute_length, CHECK_(nullHandle)); | |
1733 } | |
1734 } else if (_major_version >= JAVA_1_5_VERSION) { | |
1735 if (method_attribute_name == vmSymbols::tag_signature()) { | |
1736 if (method_attribute_length != 2) { | |
1737 classfile_parse_error( | |
1738 "Invalid Signature attribute length %u in class file %s", | |
1739 method_attribute_length, CHECK_(nullHandle)); | |
1740 } | |
1741 cfs->guarantee_more(2, CHECK_(nullHandle)); // generic_signature_index | |
1742 generic_signature_index = cfs->get_u2_fast(); | |
1743 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_annotations()) { | |
1744 runtime_visible_annotations_length = method_attribute_length; | |
1745 runtime_visible_annotations = cfs->get_u1_buffer(); | |
1746 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
1747 cfs->skip_u1(runtime_visible_annotations_length, CHECK_(nullHandle)); | |
1748 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_annotations()) { | |
1749 runtime_invisible_annotations_length = method_attribute_length; | |
1750 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
1751 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
1752 cfs->skip_u1(runtime_invisible_annotations_length, CHECK_(nullHandle)); | |
1753 } else if (method_attribute_name == vmSymbols::tag_runtime_visible_parameter_annotations()) { | |
1754 runtime_visible_parameter_annotations_length = method_attribute_length; | |
1755 runtime_visible_parameter_annotations = cfs->get_u1_buffer(); | |
1756 assert(runtime_visible_parameter_annotations != NULL, "null visible parameter annotations"); | |
1757 cfs->skip_u1(runtime_visible_parameter_annotations_length, CHECK_(nullHandle)); | |
1758 } else if (PreserveAllAnnotations && method_attribute_name == vmSymbols::tag_runtime_invisible_parameter_annotations()) { | |
1759 runtime_invisible_parameter_annotations_length = method_attribute_length; | |
1760 runtime_invisible_parameter_annotations = cfs->get_u1_buffer(); | |
1761 assert(runtime_invisible_parameter_annotations != NULL, "null invisible parameter annotations"); | |
1762 cfs->skip_u1(runtime_invisible_parameter_annotations_length, CHECK_(nullHandle)); | |
1763 } else if (method_attribute_name == vmSymbols::tag_annotation_default()) { | |
1764 annotation_default_length = method_attribute_length; | |
1765 annotation_default = cfs->get_u1_buffer(); | |
1766 assert(annotation_default != NULL, "null annotation default"); | |
1767 cfs->skip_u1(annotation_default_length, CHECK_(nullHandle)); | |
1768 } else { | |
1769 // Skip unknown attributes | |
1770 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
1771 } | |
1772 } else { | |
1773 // Skip unknown attributes | |
1774 cfs->skip_u1(method_attribute_length, CHECK_(nullHandle)); | |
1775 } | |
1776 } | |
1777 | |
1778 if (linenumber_table != NULL) { | |
1779 linenumber_table->write_terminator(); | |
1780 linenumber_table_length = linenumber_table->position(); | |
1781 } | |
1782 | |
1783 // Make sure there's at least one Code attribute in non-native/non-abstract method | |
1784 if (_need_verify) { | |
1785 guarantee_property(access_flags.is_native() || access_flags.is_abstract() || parsed_code_attribute, | |
1786 "Absent Code attribute in method that is not native or abstract in class file %s", CHECK_(nullHandle)); | |
1787 } | |
1788 | |
1789 // All sizing information for a methodOop is finally available, now create it | |
1790 methodOop m_oop = oopFactory::new_method( | |
1791 code_length, access_flags, linenumber_table_length, | |
518
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
474
diff
changeset
|
1792 total_lvt_length, checked_exceptions_length, |
0af8b0718fc9
6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark"
jmasa
parents:
474
diff
changeset
|
1793 methodOopDesc::IsSafeConc, CHECK_(nullHandle)); |
0 | 1794 methodHandle m (THREAD, m_oop); |
1795 | |
1796 ClassLoadingService::add_class_method_size(m_oop->size()*HeapWordSize); | |
1797 | |
1798 // Fill in information from fixed part (access_flags already set) | |
1799 m->set_constants(cp()); | |
1800 m->set_name_index(name_index); | |
1801 m->set_signature_index(signature_index); | |
1802 m->set_generic_signature_index(generic_signature_index); | |
1803 #ifdef CC_INTERP | |
1804 // hmm is there a gc issue here?? | |
1805 ResultTypeFinder rtf(cp->symbol_at(signature_index)); | |
1806 m->set_result_index(rtf.type()); | |
1807 #endif | |
1808 | |
1809 if (args_size >= 0) { | |
1810 m->set_size_of_parameters(args_size); | |
1811 } else { | |
1812 m->compute_size_of_parameters(THREAD); | |
1813 } | |
1814 #ifdef ASSERT | |
1815 if (args_size >= 0) { | |
1816 m->compute_size_of_parameters(THREAD); | |
1817 assert(args_size == m->size_of_parameters(), ""); | |
1818 } | |
1819 #endif | |
1820 | |
1821 // Fill in code attribute information | |
1822 m->set_max_stack(max_stack); | |
1823 m->set_max_locals(max_locals); | |
1824 m->constMethod()->set_stackmap_data(stackmap_data()); | |
1825 | |
1826 /** | |
1827 * The exception_table field is the flag used to indicate | |
1828 * that the methodOop and it's associated constMethodOop are partially | |
1829 * initialized and thus are exempt from pre/post GC verification. Once | |
1830 * the field is set, the oops are considered fully initialized so make | |
1831 * sure that the oops can pass verification when this field is set. | |
1832 */ | |
1833 m->set_exception_table(exception_handlers()); | |
1834 | |
1835 // Copy byte codes | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1108
diff
changeset
|
1836 m->set_code(code_start); |
0 | 1837 |
1838 // Copy line number table | |
1839 if (linenumber_table != NULL) { | |
1840 memcpy(m->compressed_linenumber_table(), | |
1841 linenumber_table->buffer(), linenumber_table_length); | |
1842 } | |
1843 | |
1844 // Copy checked exceptions | |
1845 if (checked_exceptions_length > 0) { | |
1846 int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2); | |
1847 copy_u2_with_conversion((u2*) m->checked_exceptions_start(), checked_exceptions_start, size); | |
1848 } | |
1849 | |
1850 /* Copy class file LVT's/LVTT's into the HotSpot internal LVT. | |
1851 * | |
1852 * Rules for LVT's and LVTT's are: | |
1853 * - There can be any number of LVT's and LVTT's. | |
1854 * - If there are n LVT's, it is the same as if there was just | |
1855 * one LVT containing all the entries from the n LVT's. | |
1856 * - There may be no more than one LVT entry per local variable. | |
1857 * Two LVT entries are 'equal' if these fields are the same: | |
1858 * start_pc, length, name, slot | |
1859 * - There may be no more than one LVTT entry per each LVT entry. | |
1860 * Each LVTT entry has to match some LVT entry. | |
1861 * - HotSpot internal LVT keeps natural ordering of class file LVT entries. | |
1862 */ | |
1863 if (total_lvt_length > 0) { | |
1864 int tbl_no, idx; | |
1865 | |
1866 promoted_flags->set_has_localvariable_table(); | |
1867 | |
1868 LVT_Hash** lvt_Hash = NEW_RESOURCE_ARRAY(LVT_Hash*, HASH_ROW_SIZE); | |
1869 initialize_hashtable(lvt_Hash); | |
1870 | |
1871 // To fill LocalVariableTable in | |
1872 Classfile_LVT_Element* cf_lvt; | |
1873 LocalVariableTableElement* lvt = m->localvariable_table_start(); | |
1874 | |
1875 for (tbl_no = 0; tbl_no < lvt_cnt; tbl_no++) { | |
1876 cf_lvt = (Classfile_LVT_Element *) localvariable_table_start[tbl_no]; | |
1877 for (idx = 0; idx < localvariable_table_length[tbl_no]; idx++, lvt++) { | |
1878 copy_lvt_element(&cf_lvt[idx], lvt); | |
1879 // If no duplicates, add LVT elem in hashtable lvt_Hash. | |
1880 if (LVT_put_after_lookup(lvt, lvt_Hash) == false | |
1881 && _need_verify | |
1882 && _major_version >= JAVA_1_5_VERSION ) { | |
1883 clear_hashtable(lvt_Hash); | |
1884 classfile_parse_error("Duplicated LocalVariableTable attribute " | |
1885 "entry for '%s' in class file %s", | |
1886 cp->symbol_at(lvt->name_cp_index)->as_utf8(), | |
1887 CHECK_(nullHandle)); | |
1888 } | |
1889 } | |
1890 } | |
1891 | |
1892 // To merge LocalVariableTable and LocalVariableTypeTable | |
1893 Classfile_LVT_Element* cf_lvtt; | |
1894 LocalVariableTableElement lvtt_elem; | |
1895 | |
1896 for (tbl_no = 0; tbl_no < lvtt_cnt; tbl_no++) { | |
1897 cf_lvtt = (Classfile_LVT_Element *) localvariable_type_table_start[tbl_no]; | |
1898 for (idx = 0; idx < localvariable_type_table_length[tbl_no]; idx++) { | |
1899 copy_lvt_element(&cf_lvtt[idx], &lvtt_elem); | |
1900 int index = hash(&lvtt_elem); | |
1901 LVT_Hash* entry = LVT_lookup(&lvtt_elem, index, lvt_Hash); | |
1902 if (entry == NULL) { | |
1903 if (_need_verify) { | |
1904 clear_hashtable(lvt_Hash); | |
1905 classfile_parse_error("LVTT entry for '%s' in class file %s " | |
1906 "does not match any LVT entry", | |
1907 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
1908 CHECK_(nullHandle)); | |
1909 } | |
1910 } else if (entry->_elem->signature_cp_index != 0 && _need_verify) { | |
1911 clear_hashtable(lvt_Hash); | |
1912 classfile_parse_error("Duplicated LocalVariableTypeTable attribute " | |
1913 "entry for '%s' in class file %s", | |
1914 cp->symbol_at(lvtt_elem.name_cp_index)->as_utf8(), | |
1915 CHECK_(nullHandle)); | |
1916 } else { | |
1917 // to add generic signatures into LocalVariableTable | |
1918 entry->_elem->signature_cp_index = lvtt_elem.descriptor_cp_index; | |
1919 } | |
1920 } | |
1921 } | |
1922 clear_hashtable(lvt_Hash); | |
1923 } | |
1924 | |
1925 *method_annotations = assemble_annotations(runtime_visible_annotations, | |
1926 runtime_visible_annotations_length, | |
1927 runtime_invisible_annotations, | |
1928 runtime_invisible_annotations_length, | |
1929 CHECK_(nullHandle)); | |
1930 *method_parameter_annotations = assemble_annotations(runtime_visible_parameter_annotations, | |
1931 runtime_visible_parameter_annotations_length, | |
1932 runtime_invisible_parameter_annotations, | |
1933 runtime_invisible_parameter_annotations_length, | |
1934 CHECK_(nullHandle)); | |
1935 *method_default_annotations = assemble_annotations(annotation_default, | |
1936 annotation_default_length, | |
1937 NULL, | |
1938 0, | |
1939 CHECK_(nullHandle)); | |
1940 | |
1941 if (name() == vmSymbols::finalize_method_name() && | |
1942 signature() == vmSymbols::void_method_signature()) { | |
1943 if (m->is_empty_method()) { | |
1944 _has_empty_finalizer = true; | |
1945 } else { | |
1946 _has_finalizer = true; | |
1947 } | |
1948 } | |
1949 if (name() == vmSymbols::object_initializer_name() && | |
1950 signature() == vmSymbols::void_method_signature() && | |
1951 m->is_vanilla_constructor()) { | |
1952 _has_vanilla_constructor = true; | |
1953 } | |
1954 | |
1507
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1366
diff
changeset
|
1955 if (EnableMethodHandles && (m->is_method_handle_invoke() || |
cd5dbf694d45
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
1366
diff
changeset
|
1956 m->is_method_handle_adapter())) { |
710 | 1957 THROW_MSG_(vmSymbols::java_lang_VirtualMachineError(), |
1958 "Method handle invokers must be defined internally to the VM", nullHandle); | |
1959 } | |
1960 | |
0 | 1961 return m; |
1962 } | |
1963 | |
1964 | |
1965 // The promoted_flags parameter is used to pass relevant access_flags | |
1966 // from the methods back up to the containing klass. These flag values | |
1967 // are added to klass's access_flags. | |
1968 | |
1969 objArrayHandle ClassFileParser::parse_methods(constantPoolHandle cp, bool is_interface, | |
1970 AccessFlags* promoted_flags, | |
1971 bool* has_final_method, | |
1972 objArrayOop* methods_annotations_oop, | |
1973 objArrayOop* methods_parameter_annotations_oop, | |
1974 objArrayOop* methods_default_annotations_oop, | |
1975 TRAPS) { | |
1976 ClassFileStream* cfs = stream(); | |
1977 objArrayHandle nullHandle; | |
1978 typeArrayHandle method_annotations; | |
1979 typeArrayHandle method_parameter_annotations; | |
1980 typeArrayHandle method_default_annotations; | |
1981 cfs->guarantee_more(2, CHECK_(nullHandle)); // length | |
1982 u2 length = cfs->get_u2_fast(); | |
1983 if (length == 0) { | |
1984 return objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
1985 } else { | |
1986 objArrayOop m = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
1987 objArrayHandle methods(THREAD, m); | |
1988 HandleMark hm(THREAD); | |
1989 objArrayHandle methods_annotations; | |
1990 objArrayHandle methods_parameter_annotations; | |
1991 objArrayHandle methods_default_annotations; | |
1992 for (int index = 0; index < length; index++) { | |
1993 methodHandle method = parse_method(cp, is_interface, | |
1994 promoted_flags, | |
1995 &method_annotations, | |
1996 &method_parameter_annotations, | |
1997 &method_default_annotations, | |
1998 CHECK_(nullHandle)); | |
1999 if (method->is_final()) { | |
2000 *has_final_method = true; | |
2001 } | |
2002 methods->obj_at_put(index, method()); | |
2003 if (method_annotations.not_null()) { | |
2004 if (methods_annotations.is_null()) { | |
2005 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2006 methods_annotations = objArrayHandle(THREAD, md); | |
2007 } | |
2008 methods_annotations->obj_at_put(index, method_annotations()); | |
2009 } | |
2010 if (method_parameter_annotations.not_null()) { | |
2011 if (methods_parameter_annotations.is_null()) { | |
2012 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2013 methods_parameter_annotations = objArrayHandle(THREAD, md); | |
2014 } | |
2015 methods_parameter_annotations->obj_at_put(index, method_parameter_annotations()); | |
2016 } | |
2017 if (method_default_annotations.not_null()) { | |
2018 if (methods_default_annotations.is_null()) { | |
2019 objArrayOop md = oopFactory::new_system_objArray(length, CHECK_(nullHandle)); | |
2020 methods_default_annotations = objArrayHandle(THREAD, md); | |
2021 } | |
2022 methods_default_annotations->obj_at_put(index, method_default_annotations()); | |
2023 } | |
2024 } | |
2025 if (_need_verify && length > 1) { | |
2026 // Check duplicated methods | |
2027 ResourceMark rm(THREAD); | |
2028 NameSigHash** names_and_sigs = NEW_RESOURCE_ARRAY_IN_THREAD( | |
2029 THREAD, NameSigHash*, HASH_ROW_SIZE); | |
2030 initialize_hashtable(names_and_sigs); | |
2031 bool dup = false; | |
2032 { | |
2033 debug_only(No_Safepoint_Verifier nsv;) | |
2034 for (int i = 0; i < length; i++) { | |
2035 methodOop m = (methodOop)methods->obj_at(i); | |
2036 // If no duplicates, add name/signature in hashtable names_and_sigs. | |
2037 if (!put_after_lookup(m->name(), m->signature(), names_and_sigs)) { | |
2038 dup = true; | |
2039 break; | |
2040 } | |
2041 } | |
2042 } | |
2043 if (dup) { | |
2044 classfile_parse_error("Duplicate method name&signature in class file %s", | |
2045 CHECK_(nullHandle)); | |
2046 } | |
2047 } | |
2048 | |
2049 *methods_annotations_oop = methods_annotations(); | |
2050 *methods_parameter_annotations_oop = methods_parameter_annotations(); | |
2051 *methods_default_annotations_oop = methods_default_annotations(); | |
2052 | |
2053 return methods; | |
2054 } | |
2055 } | |
2056 | |
2057 | |
2058 typeArrayHandle ClassFileParser::sort_methods(objArrayHandle methods, | |
2059 objArrayHandle methods_annotations, | |
2060 objArrayHandle methods_parameter_annotations, | |
2061 objArrayHandle methods_default_annotations, | |
2062 TRAPS) { | |
2063 typeArrayHandle nullHandle; | |
2064 int length = methods()->length(); | |
2065 // If JVMTI original method ordering is enabled we have to | |
2066 // remember the original class file ordering. | |
2067 // We temporarily use the vtable_index field in the methodOop to store the | |
2068 // class file index, so we can read in after calling qsort. | |
2069 if (JvmtiExport::can_maintain_original_method_order()) { | |
2070 for (int index = 0; index < length; index++) { | |
2071 methodOop m = methodOop(methods->obj_at(index)); | |
2072 assert(!m->valid_vtable_index(), "vtable index should not be set"); | |
2073 m->set_vtable_index(index); | |
2074 } | |
2075 } | |
2076 // Sort method array by ascending method name (for faster lookups & vtable construction) | |
2077 // Note that the ordering is not alphabetical, see symbolOopDesc::fast_compare | |
2078 methodOopDesc::sort_methods(methods(), | |
2079 methods_annotations(), | |
2080 methods_parameter_annotations(), | |
2081 methods_default_annotations()); | |
2082 | |
2083 // If JVMTI original method ordering is enabled construct int array remembering the original ordering | |
2084 if (JvmtiExport::can_maintain_original_method_order()) { | |
2085 typeArrayOop new_ordering = oopFactory::new_permanent_intArray(length, CHECK_(nullHandle)); | |
2086 typeArrayHandle method_ordering(THREAD, new_ordering); | |
2087 for (int index = 0; index < length; index++) { | |
2088 methodOop m = methodOop(methods->obj_at(index)); | |
2089 int old_index = m->vtable_index(); | |
2090 assert(old_index >= 0 && old_index < length, "invalid method index"); | |
2091 method_ordering->int_at_put(index, old_index); | |
2092 m->set_vtable_index(methodOopDesc::invalid_vtable_index); | |
2093 } | |
2094 return method_ordering; | |
2095 } else { | |
2096 return typeArrayHandle(THREAD, Universe::the_empty_int_array()); | |
2097 } | |
2098 } | |
2099 | |
2100 | |
2101 void ClassFileParser::parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2102 ClassFileStream* cfs = stream(); | |
2103 cfs->guarantee_more(2, CHECK); // sourcefile_index | |
2104 u2 sourcefile_index = cfs->get_u2_fast(); | |
2105 check_property( | |
2106 valid_cp_range(sourcefile_index, cp->length()) && | |
2107 cp->tag_at(sourcefile_index).is_utf8(), | |
2108 "Invalid SourceFile attribute at constant pool index %u in class file %s", | |
2109 sourcefile_index, CHECK); | |
2110 k->set_source_file_name(cp->symbol_at(sourcefile_index)); | |
2111 } | |
2112 | |
2113 | |
2114 | |
2115 void ClassFileParser::parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
2116 instanceKlassHandle k, | |
2117 int length, TRAPS) { | |
2118 ClassFileStream* cfs = stream(); | |
2119 u1* sde_buffer = cfs->get_u1_buffer(); | |
2120 assert(sde_buffer != NULL, "null sde buffer"); | |
2121 | |
2122 // Don't bother storing it if there is no way to retrieve it | |
2123 if (JvmtiExport::can_get_source_debug_extension()) { | |
2124 // Optimistically assume that only 1 byte UTF format is used | |
2125 // (common case) | |
2126 symbolOop sde_symbol = oopFactory::new_symbol((char*)sde_buffer, | |
2127 length, CHECK); | |
2128 k->set_source_debug_extension(sde_symbol); | |
2129 } | |
2130 // Got utf8 string, set stream position forward | |
2131 cfs->skip_u1(length, CHECK); | |
2132 } | |
2133 | |
2134 | |
2135 // Inner classes can be static, private or protected (classic VM does this) | |
2136 #define RECOGNIZED_INNER_CLASS_MODIFIERS (JVM_RECOGNIZED_CLASS_MODIFIERS | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED | JVM_ACC_STATIC) | |
2137 | |
2138 // Return number of classes in the inner classes attribute table | |
2139 u2 ClassFileParser::parse_classfile_inner_classes_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2140 ClassFileStream* cfs = stream(); | |
2141 cfs->guarantee_more(2, CHECK_0); // length | |
2142 u2 length = cfs->get_u2_fast(); | |
2143 | |
2144 // 4-tuples of shorts [inner_class_info_index, outer_class_info_index, inner_name_index, inner_class_access_flags] | |
2145 typeArrayOop ic = oopFactory::new_permanent_shortArray(length*4, CHECK_0); | |
2146 typeArrayHandle inner_classes(THREAD, ic); | |
2147 int index = 0; | |
2148 int cp_size = cp->length(); | |
2149 cfs->guarantee_more(8 * length, CHECK_0); // 4-tuples of u2 | |
2150 for (int n = 0; n < length; n++) { | |
2151 // Inner class index | |
2152 u2 inner_class_info_index = cfs->get_u2_fast(); | |
2153 check_property( | |
2154 inner_class_info_index == 0 || | |
2155 (valid_cp_range(inner_class_info_index, cp_size) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2156 is_klass_reference(cp, inner_class_info_index)), |
0 | 2157 "inner_class_info_index %u has bad constant type in class file %s", |
2158 inner_class_info_index, CHECK_0); | |
2159 // Outer class index | |
2160 u2 outer_class_info_index = cfs->get_u2_fast(); | |
2161 check_property( | |
2162 outer_class_info_index == 0 || | |
2163 (valid_cp_range(outer_class_info_index, cp_size) && | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2164 is_klass_reference(cp, outer_class_info_index)), |
0 | 2165 "outer_class_info_index %u has bad constant type in class file %s", |
2166 outer_class_info_index, CHECK_0); | |
2167 // Inner class name | |
2168 u2 inner_name_index = cfs->get_u2_fast(); | |
2169 check_property( | |
2170 inner_name_index == 0 || (valid_cp_range(inner_name_index, cp_size) && | |
2171 cp->tag_at(inner_name_index).is_utf8()), | |
2172 "inner_name_index %u has bad constant type in class file %s", | |
2173 inner_name_index, CHECK_0); | |
2174 if (_need_verify) { | |
2175 guarantee_property(inner_class_info_index != outer_class_info_index, | |
2176 "Class is both outer and inner class in class file %s", CHECK_0); | |
2177 } | |
2178 // Access flags | |
2179 AccessFlags inner_access_flags; | |
2180 jint flags = cfs->get_u2_fast() & RECOGNIZED_INNER_CLASS_MODIFIERS; | |
2181 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2182 // Set abstract bit for old class files for backward compatibility | |
2183 flags |= JVM_ACC_ABSTRACT; | |
2184 } | |
2185 verify_legal_class_modifiers(flags, CHECK_0); | |
2186 inner_access_flags.set_flags(flags); | |
2187 | |
2188 inner_classes->short_at_put(index++, inner_class_info_index); | |
2189 inner_classes->short_at_put(index++, outer_class_info_index); | |
2190 inner_classes->short_at_put(index++, inner_name_index); | |
2191 inner_classes->short_at_put(index++, inner_access_flags.as_short()); | |
2192 } | |
2193 | |
2194 // 4347400: make sure there's no duplicate entry in the classes array | |
2195 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
2196 for(int i = 0; i < inner_classes->length(); i += 4) { | |
2197 for(int j = i + 4; j < inner_classes->length(); j += 4) { | |
2198 guarantee_property((inner_classes->ushort_at(i) != inner_classes->ushort_at(j) || | |
2199 inner_classes->ushort_at(i+1) != inner_classes->ushort_at(j+1) || | |
2200 inner_classes->ushort_at(i+2) != inner_classes->ushort_at(j+2) || | |
2201 inner_classes->ushort_at(i+3) != inner_classes->ushort_at(j+3)), | |
2202 "Duplicate entry in InnerClasses in class file %s", | |
2203 CHECK_0); | |
2204 } | |
2205 } | |
2206 } | |
2207 | |
2208 // Update instanceKlass with inner class info. | |
2209 k->set_inner_classes(inner_classes()); | |
2210 return length; | |
2211 } | |
2212 | |
2213 void ClassFileParser::parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2214 k->set_is_synthetic(); | |
2215 } | |
2216 | |
2217 void ClassFileParser::parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2218 ClassFileStream* cfs = stream(); | |
2219 u2 signature_index = cfs->get_u2(CHECK); | |
2220 check_property( | |
2221 valid_cp_range(signature_index, cp->length()) && | |
2222 cp->tag_at(signature_index).is_utf8(), | |
2223 "Invalid constant pool index %u in Signature attribute in class file %s", | |
2224 signature_index, CHECK); | |
2225 k->set_generic_signature(cp->symbol_at(signature_index)); | |
2226 } | |
2227 | |
2228 void ClassFileParser::parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS) { | |
2229 ClassFileStream* cfs = stream(); | |
2230 // Set inner classes attribute to default sentinel | |
2231 k->set_inner_classes(Universe::the_empty_short_array()); | |
2232 cfs->guarantee_more(2, CHECK); // attributes_count | |
2233 u2 attributes_count = cfs->get_u2_fast(); | |
2234 bool parsed_sourcefile_attribute = false; | |
2235 bool parsed_innerclasses_attribute = false; | |
2236 bool parsed_enclosingmethod_attribute = false; | |
2237 u1* runtime_visible_annotations = NULL; | |
2238 int runtime_visible_annotations_length = 0; | |
2239 u1* runtime_invisible_annotations = NULL; | |
2240 int runtime_invisible_annotations_length = 0; | |
2241 // Iterate over attributes | |
2242 while (attributes_count--) { | |
2243 cfs->guarantee_more(6, CHECK); // attribute_name_index, attribute_length | |
2244 u2 attribute_name_index = cfs->get_u2_fast(); | |
2245 u4 attribute_length = cfs->get_u4_fast(); | |
2246 check_property( | |
2247 valid_cp_range(attribute_name_index, cp->length()) && | |
2248 cp->tag_at(attribute_name_index).is_utf8(), | |
2249 "Attribute name has bad constant pool index %u in class file %s", | |
2250 attribute_name_index, CHECK); | |
2251 symbolOop tag = cp->symbol_at(attribute_name_index); | |
2252 if (tag == vmSymbols::tag_source_file()) { | |
2253 // Check for SourceFile tag | |
2254 if (_need_verify) { | |
2255 guarantee_property(attribute_length == 2, "Wrong SourceFile attribute length in class file %s", CHECK); | |
2256 } | |
2257 if (parsed_sourcefile_attribute) { | |
2258 classfile_parse_error("Multiple SourceFile attributes in class file %s", CHECK); | |
2259 } else { | |
2260 parsed_sourcefile_attribute = true; | |
2261 } | |
2262 parse_classfile_sourcefile_attribute(cp, k, CHECK); | |
2263 } else if (tag == vmSymbols::tag_source_debug_extension()) { | |
2264 // Check for SourceDebugExtension tag | |
2265 parse_classfile_source_debug_extension_attribute(cp, k, (int)attribute_length, CHECK); | |
2266 } else if (tag == vmSymbols::tag_inner_classes()) { | |
2267 // Check for InnerClasses tag | |
2268 if (parsed_innerclasses_attribute) { | |
2269 classfile_parse_error("Multiple InnerClasses attributes in class file %s", CHECK); | |
2270 } else { | |
2271 parsed_innerclasses_attribute = true; | |
2272 } | |
2273 u2 num_of_classes = parse_classfile_inner_classes_attribute(cp, k, CHECK); | |
2274 if (_need_verify && _major_version >= JAVA_1_5_VERSION) { | |
2275 guarantee_property(attribute_length == sizeof(num_of_classes) + 4 * sizeof(u2) * num_of_classes, | |
2276 "Wrong InnerClasses attribute length in class file %s", CHECK); | |
2277 } | |
2278 } else if (tag == vmSymbols::tag_synthetic()) { | |
2279 // Check for Synthetic tag | |
2280 // Shouldn't we check that the synthetic flags wasn't already set? - not required in spec | |
2281 if (attribute_length != 0) { | |
2282 classfile_parse_error( | |
2283 "Invalid Synthetic classfile attribute length %u in class file %s", | |
2284 attribute_length, CHECK); | |
2285 } | |
2286 parse_classfile_synthetic_attribute(cp, k, CHECK); | |
2287 } else if (tag == vmSymbols::tag_deprecated()) { | |
2288 // Check for Deprecatd tag - 4276120 | |
2289 if (attribute_length != 0) { | |
2290 classfile_parse_error( | |
2291 "Invalid Deprecated classfile attribute length %u in class file %s", | |
2292 attribute_length, CHECK); | |
2293 } | |
2294 } else if (_major_version >= JAVA_1_5_VERSION) { | |
2295 if (tag == vmSymbols::tag_signature()) { | |
2296 if (attribute_length != 2) { | |
2297 classfile_parse_error( | |
2298 "Wrong Signature attribute length %u in class file %s", | |
2299 attribute_length, CHECK); | |
2300 } | |
2301 parse_classfile_signature_attribute(cp, k, CHECK); | |
2302 } else if (tag == vmSymbols::tag_runtime_visible_annotations()) { | |
2303 runtime_visible_annotations_length = attribute_length; | |
2304 runtime_visible_annotations = cfs->get_u1_buffer(); | |
2305 assert(runtime_visible_annotations != NULL, "null visible annotations"); | |
2306 cfs->skip_u1(runtime_visible_annotations_length, CHECK); | |
2307 } else if (PreserveAllAnnotations && tag == vmSymbols::tag_runtime_invisible_annotations()) { | |
2308 runtime_invisible_annotations_length = attribute_length; | |
2309 runtime_invisible_annotations = cfs->get_u1_buffer(); | |
2310 assert(runtime_invisible_annotations != NULL, "null invisible annotations"); | |
2311 cfs->skip_u1(runtime_invisible_annotations_length, CHECK); | |
2312 } else if (tag == vmSymbols::tag_enclosing_method()) { | |
2313 if (parsed_enclosingmethod_attribute) { | |
2314 classfile_parse_error("Multiple EnclosingMethod attributes in class file %s", CHECK); | |
2315 } else { | |
2316 parsed_enclosingmethod_attribute = true; | |
2317 } | |
2318 cfs->guarantee_more(4, CHECK); // class_index, method_index | |
2319 u2 class_index = cfs->get_u2_fast(); | |
2320 u2 method_index = cfs->get_u2_fast(); | |
2321 if (class_index == 0) { | |
2322 classfile_parse_error("Invalid class index in EnclosingMethod attribute in class file %s", CHECK); | |
2323 } | |
2324 // Validate the constant pool indices and types | |
2325 if (!cp->is_within_bounds(class_index) || | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2326 !is_klass_reference(cp, class_index)) { |
0 | 2327 classfile_parse_error("Invalid or out-of-bounds class index in EnclosingMethod attribute in class file %s", CHECK); |
2328 } | |
2329 if (method_index != 0 && | |
2330 (!cp->is_within_bounds(method_index) || | |
2331 !cp->tag_at(method_index).is_name_and_type())) { | |
2332 classfile_parse_error("Invalid or out-of-bounds method index in EnclosingMethod attribute in class file %s", CHECK); | |
2333 } | |
2334 k->set_enclosing_method_indices(class_index, method_index); | |
2335 } else { | |
2336 // Unknown attribute | |
2337 cfs->skip_u1(attribute_length, CHECK); | |
2338 } | |
2339 } else { | |
2340 // Unknown attribute | |
2341 cfs->skip_u1(attribute_length, CHECK); | |
2342 } | |
2343 } | |
2344 typeArrayHandle annotations = assemble_annotations(runtime_visible_annotations, | |
2345 runtime_visible_annotations_length, | |
2346 runtime_invisible_annotations, | |
2347 runtime_invisible_annotations_length, | |
2348 CHECK); | |
2349 k->set_class_annotations(annotations()); | |
2350 } | |
2351 | |
2352 | |
2353 typeArrayHandle ClassFileParser::assemble_annotations(u1* runtime_visible_annotations, | |
2354 int runtime_visible_annotations_length, | |
2355 u1* runtime_invisible_annotations, | |
2356 int runtime_invisible_annotations_length, TRAPS) { | |
2357 typeArrayHandle annotations; | |
2358 if (runtime_visible_annotations != NULL || | |
2359 runtime_invisible_annotations != NULL) { | |
2360 typeArrayOop anno = oopFactory::new_permanent_byteArray(runtime_visible_annotations_length + | |
2361 runtime_invisible_annotations_length, CHECK_(annotations)); | |
2362 annotations = typeArrayHandle(THREAD, anno); | |
2363 if (runtime_visible_annotations != NULL) { | |
2364 memcpy(annotations->byte_at_addr(0), runtime_visible_annotations, runtime_visible_annotations_length); | |
2365 } | |
2366 if (runtime_invisible_annotations != NULL) { | |
2367 memcpy(annotations->byte_at_addr(runtime_visible_annotations_length), runtime_invisible_annotations, runtime_invisible_annotations_length); | |
2368 } | |
2369 } | |
2370 return annotations; | |
2371 } | |
2372 | |
2373 | |
2374 static void initialize_static_field(fieldDescriptor* fd, TRAPS) { | |
2375 KlassHandle h_k (THREAD, fd->field_holder()); | |
2376 assert(h_k.not_null() && fd->is_static(), "just checking"); | |
2377 if (fd->has_initial_value()) { | |
2378 BasicType t = fd->field_type(); | |
2379 switch (t) { | |
2380 case T_BYTE: | |
2381 h_k()->byte_field_put(fd->offset(), fd->int_initial_value()); | |
2382 break; | |
2383 case T_BOOLEAN: | |
2384 h_k()->bool_field_put(fd->offset(), fd->int_initial_value()); | |
2385 break; | |
2386 case T_CHAR: | |
2387 h_k()->char_field_put(fd->offset(), fd->int_initial_value()); | |
2388 break; | |
2389 case T_SHORT: | |
2390 h_k()->short_field_put(fd->offset(), fd->int_initial_value()); | |
2391 break; | |
2392 case T_INT: | |
2393 h_k()->int_field_put(fd->offset(), fd->int_initial_value()); | |
2394 break; | |
2395 case T_FLOAT: | |
2396 h_k()->float_field_put(fd->offset(), fd->float_initial_value()); | |
2397 break; | |
2398 case T_DOUBLE: | |
2399 h_k()->double_field_put(fd->offset(), fd->double_initial_value()); | |
2400 break; | |
2401 case T_LONG: | |
2402 h_k()->long_field_put(fd->offset(), fd->long_initial_value()); | |
2403 break; | |
2404 case T_OBJECT: | |
2405 { | |
2406 #ifdef ASSERT | |
2407 symbolOop sym = oopFactory::new_symbol("Ljava/lang/String;", CHECK); | |
2408 assert(fd->signature() == sym, "just checking"); | |
2409 #endif | |
2410 oop string = fd->string_initial_value(CHECK); | |
2411 h_k()->obj_field_put(fd->offset(), string); | |
2412 } | |
2413 break; | |
2414 default: | |
2415 THROW_MSG(vmSymbols::java_lang_ClassFormatError(), | |
2416 "Illegal ConstantValue attribute in class file"); | |
2417 } | |
2418 } | |
2419 } | |
2420 | |
2421 | |
2422 void ClassFileParser::java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr, | |
2423 constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS) { | |
2424 // This code is for compatibility with earlier jdk's that do not | |
2425 // have the "discovered" field in java.lang.ref.Reference. For 1.5 | |
2426 // the check for the "discovered" field should issue a warning if | |
2427 // the field is not found. For 1.6 this code should be issue a | |
2428 // fatal error if the "discovered" field is not found. | |
2429 // | |
2430 // Increment fac.nonstatic_oop_count so that the start of the | |
2431 // next type of non-static oops leaves room for the fake oop. | |
2432 // Do not increment next_nonstatic_oop_offset so that the | |
2433 // fake oop is place after the java.lang.ref.Reference oop | |
2434 // fields. | |
2435 // | |
2436 // Check the fields in java.lang.ref.Reference for the "discovered" | |
2437 // field. If it is not present, artifically create a field for it. | |
2438 // This allows this VM to run on early JDK where the field is not | |
2439 // present. | |
2440 | |
2441 // | |
2442 // Increment fac.nonstatic_oop_count so that the start of the | |
2443 // next type of non-static oops leaves room for the fake oop. | |
2444 // Do not increment next_nonstatic_oop_offset so that the | |
2445 // fake oop is place after the java.lang.ref.Reference oop | |
2446 // fields. | |
2447 // | |
2448 // Check the fields in java.lang.ref.Reference for the "discovered" | |
2449 // field. If it is not present, artifically create a field for it. | |
2450 // This allows this VM to run on early JDK where the field is not | |
2451 // present. | |
2452 int reference_sig_index = 0; | |
2453 int reference_name_index = 0; | |
2454 int reference_index = 0; | |
2455 int extra = java_lang_ref_Reference::number_of_fake_oop_fields; | |
2456 const int n = (*fields_ptr)()->length(); | |
2457 for (int i = 0; i < n; i += instanceKlass::next_offset ) { | |
2458 int name_index = | |
2459 (*fields_ptr)()->ushort_at(i + instanceKlass::name_index_offset); | |
2460 int sig_index = | |
2461 (*fields_ptr)()->ushort_at(i + instanceKlass::signature_index_offset); | |
2462 symbolOop f_name = cp->symbol_at(name_index); | |
2463 symbolOop f_sig = cp->symbol_at(sig_index); | |
2464 if (f_sig == vmSymbols::reference_signature() && reference_index == 0) { | |
2465 // Save the index for reference signature for later use. | |
2466 // The fake discovered field does not entries in the | |
2467 // constant pool so the index for its signature cannot | |
2468 // be extracted from the constant pool. It will need | |
2469 // later, however. It's signature is vmSymbols::reference_signature() | |
2470 // so same an index for that signature. | |
2471 reference_sig_index = sig_index; | |
2472 reference_name_index = name_index; | |
2473 reference_index = i; | |
2474 } | |
2475 if (f_name == vmSymbols::reference_discovered_name() && | |
2476 f_sig == vmSymbols::reference_signature()) { | |
2477 // The values below are fake but will force extra | |
2478 // non-static oop fields and a corresponding non-static | |
2479 // oop map block to be allocated. | |
2480 extra = 0; | |
2481 break; | |
2482 } | |
2483 } | |
2484 if (extra != 0) { | |
2485 fac_ptr->nonstatic_oop_count += extra; | |
2486 // Add the additional entry to "fields" so that the klass | |
2487 // contains the "discoverd" field and the field will be initialized | |
2488 // in instances of the object. | |
2489 int fields_with_fix_length = (*fields_ptr)()->length() + | |
2490 instanceKlass::next_offset; | |
2491 typeArrayOop ff = oopFactory::new_permanent_shortArray( | |
2492 fields_with_fix_length, CHECK); | |
2493 typeArrayHandle fields_with_fix(THREAD, ff); | |
2494 | |
2495 // Take everything from the original but the length. | |
2496 for (int idx = 0; idx < (*fields_ptr)->length(); idx++) { | |
2497 fields_with_fix->ushort_at_put(idx, (*fields_ptr)->ushort_at(idx)); | |
2498 } | |
2499 | |
2500 // Add the fake field at the end. | |
2501 int i = (*fields_ptr)->length(); | |
2502 // There is no name index for the fake "discovered" field nor | |
2503 // signature but a signature is needed so that the field will | |
2504 // be properly initialized. Use one found for | |
2505 // one of the other reference fields. Be sure the index for the | |
2506 // name is 0. In fieldDescriptor::initialize() the index of the | |
2507 // name is checked. That check is by passed for the last nonstatic | |
2508 // oop field in a java.lang.ref.Reference which is assumed to be | |
2509 // this artificial "discovered" field. An assertion checks that | |
2510 // the name index is 0. | |
2511 assert(reference_index != 0, "Missing signature for reference"); | |
2512 | |
2513 int j; | |
2514 for (j = 0; j < instanceKlass::next_offset; j++) { | |
2515 fields_with_fix->ushort_at_put(i + j, | |
2516 (*fields_ptr)->ushort_at(reference_index +j)); | |
2517 } | |
2518 // Clear the public access flag and set the private access flag. | |
2519 short flags; | |
2520 flags = | |
2521 fields_with_fix->ushort_at(i + instanceKlass::access_flags_offset); | |
2522 assert(!(flags & JVM_RECOGNIZED_FIELD_MODIFIERS), "Unexpected access flags set"); | |
2523 flags = flags & (~JVM_ACC_PUBLIC); | |
2524 flags = flags | JVM_ACC_PRIVATE; | |
2525 AccessFlags access_flags; | |
2526 access_flags.set_flags(flags); | |
2527 assert(!access_flags.is_public(), "Failed to clear public flag"); | |
2528 assert(access_flags.is_private(), "Failed to set private flag"); | |
2529 fields_with_fix->ushort_at_put(i + instanceKlass::access_flags_offset, | |
2530 flags); | |
2531 | |
2532 assert(fields_with_fix->ushort_at(i + instanceKlass::name_index_offset) | |
2533 == reference_name_index, "The fake reference name is incorrect"); | |
2534 assert(fields_with_fix->ushort_at(i + instanceKlass::signature_index_offset) | |
2535 == reference_sig_index, "The fake reference signature is incorrect"); | |
2536 // The type of the field is stored in the low_offset entry during | |
2537 // parsing. | |
2538 assert(fields_with_fix->ushort_at(i + instanceKlass::low_offset) == | |
2539 NONSTATIC_OOP, "The fake reference type is incorrect"); | |
2540 | |
2541 // "fields" is allocated in the permanent generation. Disgard | |
2542 // it and let it be collected. | |
2543 (*fields_ptr) = fields_with_fix; | |
2544 } | |
2545 return; | |
2546 } | |
2547 | |
2548 | |
2549 void ClassFileParser::java_lang_Class_fix_pre(objArrayHandle* methods_ptr, | |
2550 FieldAllocationCount *fac_ptr, TRAPS) { | |
2551 // Add fake fields for java.lang.Class instances | |
2552 // | |
2553 // This is not particularly nice. We should consider adding a | |
2554 // private transient object field at the Java level to | |
2555 // java.lang.Class. Alternatively we could add a subclass of | |
2556 // instanceKlass which provides an accessor and size computer for | |
2557 // this field, but that appears to be more code than this hack. | |
2558 // | |
2559 // NOTE that we wedge these in at the beginning rather than the | |
2560 // end of the object because the Class layout changed between JDK | |
2561 // 1.3 and JDK 1.4 with the new reflection implementation; some | |
2562 // nonstatic oop fields were added at the Java level. The offsets | |
2563 // of these fake fields can't change between these two JDK | |
2564 // versions because when the offsets are computed at bootstrap | |
2565 // time we don't know yet which version of the JDK we're running in. | |
2566 | |
2567 // The values below are fake but will force two non-static oop fields and | |
2568 // a corresponding non-static oop map block to be allocated. | |
2569 const int extra = java_lang_Class::number_of_fake_oop_fields; | |
2570 fac_ptr->nonstatic_oop_count += extra; | |
2571 } | |
2572 | |
2573 | |
2574 void ClassFileParser::java_lang_Class_fix_post(int* next_nonstatic_oop_offset_ptr) { | |
2575 // Cause the extra fake fields in java.lang.Class to show up before | |
2576 // the Java fields for layout compatibility between 1.3 and 1.4 | |
2577 // Incrementing next_nonstatic_oop_offset here advances the | |
2578 // location where the real java fields are placed. | |
2579 const int extra = java_lang_Class::number_of_fake_oop_fields; | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
2580 (*next_nonstatic_oop_offset_ptr) += (extra * heapOopSize); |
0 | 2581 } |
2582 | |
2583 | |
710 | 2584 // Force MethodHandle.vmentry to be an unmanaged pointer. |
2585 // There is no way for a classfile to express this, so we must help it. | |
2586 void ClassFileParser::java_dyn_MethodHandle_fix_pre(constantPoolHandle cp, | |
2587 typeArrayHandle* fields_ptr, | |
2588 FieldAllocationCount *fac_ptr, | |
2589 TRAPS) { | |
2590 // Add fake fields for java.dyn.MethodHandle instances | |
2591 // | |
2592 // This is not particularly nice, but since there is no way to express | |
2593 // a native wordSize field in Java, we must do it at this level. | |
2594 | |
2595 if (!EnableMethodHandles) return; | |
2596 | |
2597 int word_sig_index = 0; | |
2598 const int cp_size = cp->length(); | |
2599 for (int index = 1; index < cp_size; index++) { | |
2600 if (cp->tag_at(index).is_utf8() && | |
2601 cp->symbol_at(index) == vmSymbols::machine_word_signature()) { | |
2602 word_sig_index = index; | |
2603 break; | |
2604 } | |
2605 } | |
2606 | |
2607 if (word_sig_index == 0) | |
2608 THROW_MSG(vmSymbols::java_lang_VirtualMachineError(), | |
2609 "missing I or J signature (for vmentry) in java.dyn.MethodHandle"); | |
2610 | |
2611 bool found_vmentry = false; | |
2612 | |
2613 const int n = (*fields_ptr)()->length(); | |
2614 for (int i = 0; i < n; i += instanceKlass::next_offset) { | |
2615 int name_index = (*fields_ptr)->ushort_at(i + instanceKlass::name_index_offset); | |
2616 int sig_index = (*fields_ptr)->ushort_at(i + instanceKlass::signature_index_offset); | |
2617 int acc_flags = (*fields_ptr)->ushort_at(i + instanceKlass::access_flags_offset); | |
2618 symbolOop f_name = cp->symbol_at(name_index); | |
2619 symbolOop f_sig = cp->symbol_at(sig_index); | |
2620 if (f_sig == vmSymbols::byte_signature() && | |
2621 f_name == vmSymbols::vmentry_name() && | |
2622 (acc_flags & JVM_ACC_STATIC) == 0) { | |
2623 // Adjust the field type from byte to an unmanaged pointer. | |
2624 assert(fac_ptr->nonstatic_byte_count > 0, ""); | |
2625 fac_ptr->nonstatic_byte_count -= 1; | |
2626 (*fields_ptr)->ushort_at_put(i + instanceKlass::signature_index_offset, | |
2627 word_sig_index); | |
1108 | 2628 fac_ptr->nonstatic_word_count += 1; |
2629 | |
2630 FieldAllocationType atype = (FieldAllocationType) (*fields_ptr)->ushort_at(i + instanceKlass::low_offset); | |
710 | 2631 assert(atype == NONSTATIC_BYTE, ""); |
2632 FieldAllocationType new_atype = NONSTATIC_WORD; | |
1108 | 2633 (*fields_ptr)->ushort_at_put(i + instanceKlass::low_offset, new_atype); |
710 | 2634 |
2635 found_vmentry = true; | |
2636 break; | |
2637 } | |
2638 } | |
2639 | |
2640 if (!found_vmentry) | |
2641 THROW_MSG(vmSymbols::java_lang_VirtualMachineError(), | |
2642 "missing vmentry byte field in java.dyn.MethodHandle"); | |
2643 | |
2644 } | |
2645 | |
2646 | |
0 | 2647 instanceKlassHandle ClassFileParser::parseClassFile(symbolHandle name, |
2648 Handle class_loader, | |
2649 Handle protection_domain, | |
710 | 2650 KlassHandle host_klass, |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2651 GrowableArray<Handle>* cp_patches, |
0 | 2652 symbolHandle& parsed_name, |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
879
diff
changeset
|
2653 bool verify, |
0 | 2654 TRAPS) { |
2655 // So that JVMTI can cache class file in the state before retransformable agents | |
2656 // have modified it | |
2657 unsigned char *cached_class_file_bytes = NULL; | |
2658 jint cached_class_file_length; | |
2659 | |
2660 ClassFileStream* cfs = stream(); | |
2661 // Timing | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2662 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
|
2663 JavaThread* jt = (JavaThread*) THREAD; |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2664 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2665 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2666 ClassLoader::perf_class_parse_selftime(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2667 NULL, |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2668 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
|
2669 jt->get_thread_stat()->perf_timers_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2670 PerfClassTraceTime::PARSE_CLASS); |
0 | 2671 |
2672 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; | |
2673 | |
2674 if (JvmtiExport::should_post_class_file_load_hook()) { | |
2675 unsigned char* ptr = cfs->buffer(); | |
2676 unsigned char* end_ptr = cfs->buffer() + cfs->length(); | |
2677 | |
2678 JvmtiExport::post_class_file_load_hook(name, class_loader, protection_domain, | |
2679 &ptr, &end_ptr, | |
2680 &cached_class_file_bytes, | |
2681 &cached_class_file_length); | |
2682 | |
2683 if (ptr != cfs->buffer()) { | |
2684 // JVMTI agent has modified class file data. | |
2685 // Set new class file stream using JVMTI agent modified | |
2686 // class file data. | |
2687 cfs = new ClassFileStream(ptr, end_ptr - ptr, cfs->source()); | |
2688 set_stream(cfs); | |
2689 } | |
2690 } | |
2691 | |
710 | 2692 _host_klass = host_klass; |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2693 _cp_patches = cp_patches; |
0 | 2694 |
2695 instanceKlassHandle nullHandle; | |
2696 | |
2697 // 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
|
2698 _need_verify = Verifier::should_verify_for(class_loader(), verify); |
0 | 2699 |
2700 // Set the verify flag in stream | |
2701 cfs->set_verify(_need_verify); | |
2702 | |
2703 // Save the class file name for easier error message printing. | |
2704 _class_name = name.not_null()? name : vmSymbolHandles::unknown_class_name(); | |
2705 | |
2706 cfs->guarantee_more(8, CHECK_(nullHandle)); // magic, major, minor | |
2707 // Magic value | |
2708 u4 magic = cfs->get_u4_fast(); | |
2709 guarantee_property(magic == JAVA_CLASSFILE_MAGIC, | |
2710 "Incompatible magic value %u in class file %s", | |
2711 magic, CHECK_(nullHandle)); | |
2712 | |
2713 // Version numbers | |
2714 u2 minor_version = cfs->get_u2_fast(); | |
2715 u2 major_version = cfs->get_u2_fast(); | |
2716 | |
2717 // Check version numbers - we check this even with verifier off | |
2718 if (!is_supported_version(major_version, minor_version)) { | |
2719 if (name.is_null()) { | |
2720 Exceptions::fthrow( | |
2721 THREAD_AND_LOCATION, | |
2722 vmSymbolHandles::java_lang_UnsupportedClassVersionError(), | |
2723 "Unsupported major.minor version %u.%u", | |
2724 major_version, | |
2725 minor_version); | |
2726 } else { | |
2727 ResourceMark rm(THREAD); | |
2728 Exceptions::fthrow( | |
2729 THREAD_AND_LOCATION, | |
2730 vmSymbolHandles::java_lang_UnsupportedClassVersionError(), | |
2731 "%s : Unsupported major.minor version %u.%u", | |
2732 name->as_C_string(), | |
2733 major_version, | |
2734 minor_version); | |
2735 } | |
2736 return nullHandle; | |
2737 } | |
2738 | |
2739 _major_version = major_version; | |
2740 _minor_version = minor_version; | |
2741 | |
2742 | |
2743 // Check if verification needs to be relaxed for this class file | |
2744 // Do not restrict it to jdk1.0 or jdk1.1 to maintain backward compatibility (4982376) | |
2745 _relax_verify = Verifier::relax_verify_for(class_loader()); | |
2746 | |
2747 // Constant pool | |
2748 constantPoolHandle cp = parse_constant_pool(CHECK_(nullHandle)); | |
2749 int cp_size = cp->length(); | |
2750 | |
2751 cfs->guarantee_more(8, CHECK_(nullHandle)); // flags, this_class, super_class, infs_len | |
2752 | |
2753 // Access flags | |
2754 AccessFlags access_flags; | |
2755 jint flags = cfs->get_u2_fast() & JVM_RECOGNIZED_CLASS_MODIFIERS; | |
2756 | |
2757 if ((flags & JVM_ACC_INTERFACE) && _major_version < JAVA_6_VERSION) { | |
2758 // Set abstract bit for old class files for backward compatibility | |
2759 flags |= JVM_ACC_ABSTRACT; | |
2760 } | |
2761 verify_legal_class_modifiers(flags, CHECK_(nullHandle)); | |
2762 access_flags.set_flags(flags); | |
2763 | |
2764 // This class and superclass | |
2765 instanceKlassHandle super_klass; | |
2766 u2 this_class_index = cfs->get_u2_fast(); | |
2767 check_property( | |
2768 valid_cp_range(this_class_index, cp_size) && | |
2769 cp->tag_at(this_class_index).is_unresolved_klass(), | |
2770 "Invalid this class index %u in constant pool in class file %s", | |
2771 this_class_index, CHECK_(nullHandle)); | |
2772 | |
2773 symbolHandle class_name (THREAD, cp->unresolved_klass_at(this_class_index)); | |
2774 assert(class_name.not_null(), "class_name can't be null"); | |
2775 | |
2776 // It's important to set parsed_name *before* resolving the super class. | |
2777 // (it's used for cleanup by the caller if parsing fails) | |
2778 parsed_name = class_name; | |
2779 | |
2780 // Update _class_name which could be null previously to be class_name | |
2781 _class_name = class_name; | |
2782 | |
2783 // Don't need to check whether this class name is legal or not. | |
2784 // It has been checked when constant pool is parsed. | |
2785 // However, make sure it is not an array type. | |
2786 if (_need_verify) { | |
2787 guarantee_property(class_name->byte_at(0) != JVM_SIGNATURE_ARRAY, | |
2788 "Bad class name in class file %s", | |
2789 CHECK_(nullHandle)); | |
2790 } | |
2791 | |
2792 klassOop preserve_this_klass; // for storing result across HandleMark | |
2793 | |
2794 // release all handles when parsing is done | |
2795 { HandleMark hm(THREAD); | |
2796 | |
2797 // Checks if name in class file matches requested name | |
2798 if (name.not_null() && class_name() != name()) { | |
2799 ResourceMark rm(THREAD); | |
2800 Exceptions::fthrow( | |
2801 THREAD_AND_LOCATION, | |
2802 vmSymbolHandles::java_lang_NoClassDefFoundError(), | |
2803 "%s (wrong name: %s)", | |
2804 name->as_C_string(), | |
2805 class_name->as_C_string() | |
2806 ); | |
2807 return nullHandle; | |
2808 } | |
2809 | |
2810 if (TraceClassLoadingPreorder) { | |
2811 tty->print("[Loading %s", name()->as_klass_external_name()); | |
2812 if (cfs->source() != NULL) tty->print(" from %s", cfs->source()); | |
2813 tty->print_cr("]"); | |
2814 } | |
2815 | |
2816 u2 super_class_index = cfs->get_u2_fast(); | |
2817 if (super_class_index == 0) { | |
2818 check_property(class_name() == vmSymbols::java_lang_Object(), | |
2819 "Invalid superclass index %u in class file %s", | |
2820 super_class_index, | |
2821 CHECK_(nullHandle)); | |
2822 } else { | |
2823 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
|
2824 is_klass_reference(cp, super_class_index), |
0 | 2825 "Invalid superclass index %u in class file %s", |
2826 super_class_index, | |
2827 CHECK_(nullHandle)); | |
2828 // The class name should be legal because it is checked when parsing constant pool. | |
2829 // However, make sure it is not an array type. | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2830 bool is_array = false; |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2831 if (cp->tag_at(super_class_index).is_klass()) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2832 super_klass = instanceKlassHandle(THREAD, cp->resolved_klass_at(super_class_index)); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2833 if (_need_verify) |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2834 is_array = super_klass->oop_is_array(); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2835 } else if (_need_verify) { |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2836 is_array = (cp->unresolved_klass_at(super_class_index)->byte_at(0) == JVM_SIGNATURE_ARRAY); |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2837 } |
0 | 2838 if (_need_verify) { |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2839 guarantee_property(!is_array, |
0 | 2840 "Bad superclass name in class file %s", CHECK_(nullHandle)); |
2841 } | |
2842 } | |
2843 | |
2844 // Interfaces | |
2845 u2 itfs_len = cfs->get_u2_fast(); | |
2846 objArrayHandle local_interfaces; | |
2847 if (itfs_len == 0) { | |
2848 local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
2849 } else { | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2850 local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, _class_name, CHECK_(nullHandle)); |
0 | 2851 } |
2852 | |
2853 // Fields (offsets are filled in later) | |
2854 struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0}; | |
2855 objArrayHandle fields_annotations; | |
2856 typeArrayHandle fields = parse_fields(cp, access_flags.is_interface(), &fac, &fields_annotations, CHECK_(nullHandle)); | |
2857 // Methods | |
2858 bool has_final_method = false; | |
2859 AccessFlags promoted_flags; | |
2860 promoted_flags.set_flags(0); | |
2861 // These need to be oop pointers because they are allocated lazily | |
2862 // inside parse_methods inside a nested HandleMark | |
2863 objArrayOop methods_annotations_oop = NULL; | |
2864 objArrayOop methods_parameter_annotations_oop = NULL; | |
2865 objArrayOop methods_default_annotations_oop = NULL; | |
2866 objArrayHandle methods = parse_methods(cp, access_flags.is_interface(), | |
2867 &promoted_flags, | |
2868 &has_final_method, | |
2869 &methods_annotations_oop, | |
2870 &methods_parameter_annotations_oop, | |
2871 &methods_default_annotations_oop, | |
2872 CHECK_(nullHandle)); | |
2873 | |
2874 objArrayHandle methods_annotations(THREAD, methods_annotations_oop); | |
2875 objArrayHandle methods_parameter_annotations(THREAD, methods_parameter_annotations_oop); | |
2876 objArrayHandle methods_default_annotations(THREAD, methods_default_annotations_oop); | |
2877 | |
2878 // We check super class after class file is parsed and format is checked | |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2879 if (super_class_index > 0 && super_klass.is_null()) { |
0 | 2880 symbolHandle sk (THREAD, cp->klass_name_at(super_class_index)); |
2881 if (access_flags.is_interface()) { | |
2882 // Before attempting to resolve the superclass, check for class format | |
2883 // errors not checked yet. | |
2884 guarantee_property(sk() == vmSymbols::java_lang_Object(), | |
2885 "Interfaces must have java.lang.Object as superclass in class file %s", | |
2886 CHECK_(nullHandle)); | |
2887 } | |
2888 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, | |
2889 sk, | |
2890 class_loader, | |
2891 protection_domain, | |
2892 true, | |
2893 CHECK_(nullHandle)); | |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
710
diff
changeset
|
2894 |
0 | 2895 KlassHandle kh (THREAD, k); |
2896 super_klass = instanceKlassHandle(THREAD, kh()); | |
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
2897 if (LinkWellKnownClasses) // my super class is well known to me |
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
2898 cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2899 } |
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
196
diff
changeset
|
2900 if (super_klass.not_null()) { |
0 | 2901 if (super_klass->is_interface()) { |
2902 ResourceMark rm(THREAD); | |
2903 Exceptions::fthrow( | |
2904 THREAD_AND_LOCATION, | |
2905 vmSymbolHandles::java_lang_IncompatibleClassChangeError(), | |
2906 "class %s has interface %s as super class", | |
2907 class_name->as_klass_external_name(), | |
2908 super_klass->external_name() | |
2909 ); | |
2910 return nullHandle; | |
2911 } | |
2912 // Make sure super class is not final | |
2913 if (super_klass->is_final()) { | |
2914 THROW_MSG_(vmSymbols::java_lang_VerifyError(), "Cannot inherit from final class", nullHandle); | |
2915 } | |
2916 } | |
2917 | |
2918 // Compute the transitive list of all unique interfaces implemented by this class | |
2919 objArrayHandle transitive_interfaces = compute_transitive_interfaces(super_klass, local_interfaces, CHECK_(nullHandle)); | |
2920 | |
2921 // sort methods | |
2922 typeArrayHandle method_ordering = sort_methods(methods, | |
2923 methods_annotations, | |
2924 methods_parameter_annotations, | |
2925 methods_default_annotations, | |
2926 CHECK_(nullHandle)); | |
2927 | |
2928 // promote flags from parse_methods() to the klass' flags | |
2929 access_flags.add_promoted_flags(promoted_flags.as_int()); | |
2930 | |
2931 // Size of Java vtable (in words) | |
2932 int vtable_size = 0; | |
2933 int itable_size = 0; | |
2934 int num_miranda_methods = 0; | |
2935 | |
2936 klassVtable::compute_vtable_size_and_num_mirandas(vtable_size, | |
2937 num_miranda_methods, | |
2938 super_klass(), | |
2939 methods(), | |
2940 access_flags, | |
652
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
2941 class_loader, |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
2942 class_name, |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
2943 local_interfaces(), |
4aaa9f5e02a8
4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242.
acorn
parents:
579
diff
changeset
|
2944 CHECK_(nullHandle)); |
0 | 2945 |
2946 // Size of Java itable (in words) | |
2947 itable_size = access_flags.is_interface() ? 0 : klassItable::compute_itable_size(transitive_interfaces); | |
2948 | |
2949 // Field size and offset computation | |
2950 int nonstatic_field_size = super_klass() == NULL ? 0 : super_klass->nonstatic_field_size(); | |
2951 #ifndef PRODUCT | |
2952 int orig_nonstatic_field_size = 0; | |
2953 #endif | |
2954 int static_field_size = 0; | |
2955 int next_static_oop_offset; | |
2956 int next_static_double_offset; | |
2957 int next_static_word_offset; | |
2958 int next_static_short_offset; | |
2959 int next_static_byte_offset; | |
2960 int next_static_type_offset; | |
2961 int next_nonstatic_oop_offset; | |
2962 int next_nonstatic_double_offset; | |
2963 int next_nonstatic_word_offset; | |
2964 int next_nonstatic_short_offset; | |
2965 int next_nonstatic_byte_offset; | |
2966 int next_nonstatic_type_offset; | |
2967 int first_nonstatic_oop_offset; | |
2968 int first_nonstatic_field_offset; | |
2969 int next_nonstatic_field_offset; | |
2970 | |
2971 // Calculate the starting byte offsets | |
2972 next_static_oop_offset = (instanceKlass::header_size() + | |
2973 align_object_offset(vtable_size) + | |
2974 align_object_offset(itable_size)) * wordSize; | |
2975 next_static_double_offset = next_static_oop_offset + | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
2976 (fac.static_oop_count * heapOopSize); |
0 | 2977 if ( fac.static_double_count && |
2978 (Universe::field_type_should_be_aligned(T_DOUBLE) || | |
2979 Universe::field_type_should_be_aligned(T_LONG)) ) { | |
2980 next_static_double_offset = align_size_up(next_static_double_offset, BytesPerLong); | |
2981 } | |
2982 | |
2983 next_static_word_offset = next_static_double_offset + | |
2984 (fac.static_double_count * BytesPerLong); | |
2985 next_static_short_offset = next_static_word_offset + | |
2986 (fac.static_word_count * BytesPerInt); | |
2987 next_static_byte_offset = next_static_short_offset + | |
2988 (fac.static_short_count * BytesPerShort); | |
2989 next_static_type_offset = align_size_up((next_static_byte_offset + | |
2990 fac.static_byte_count ), wordSize ); | |
2991 static_field_size = (next_static_type_offset - | |
2992 next_static_oop_offset) / wordSize; | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
2993 first_nonstatic_field_offset = instanceOopDesc::base_offset_in_bytes() + |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
2994 nonstatic_field_size * heapOopSize; |
0 | 2995 next_nonstatic_field_offset = first_nonstatic_field_offset; |
2996 | |
2997 // Add fake fields for java.lang.Class instances (also see below) | |
2998 if (class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) { | |
2999 java_lang_Class_fix_pre(&methods, &fac, CHECK_(nullHandle)); | |
3000 } | |
3001 | |
710 | 3002 // adjust the vmentry field declaration in java.dyn.MethodHandle |
3003 if (EnableMethodHandles && class_name() == vmSymbols::sun_dyn_MethodHandleImpl() && class_loader.is_null()) { | |
3004 java_dyn_MethodHandle_fix_pre(cp, &fields, &fac, CHECK_(nullHandle)); | |
3005 } | |
3006 | |
0 | 3007 // Add a fake "discovered" field if it is not present |
3008 // for compatibility with earlier jdk's. | |
3009 if (class_name() == vmSymbols::java_lang_ref_Reference() | |
3010 && class_loader.is_null()) { | |
3011 java_lang_ref_Reference_fix_pre(&fields, cp, &fac, CHECK_(nullHandle)); | |
3012 } | |
3013 // end of "discovered" field compactibility fix | |
3014 | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3015 unsigned int nonstatic_double_count = fac.nonstatic_double_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3016 unsigned int nonstatic_word_count = fac.nonstatic_word_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3017 unsigned int nonstatic_short_count = fac.nonstatic_short_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3018 unsigned int nonstatic_byte_count = fac.nonstatic_byte_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3019 unsigned int nonstatic_oop_count = fac.nonstatic_oop_count; |
0 | 3020 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3021 bool super_has_nonstatic_fields = |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3022 (super_klass() != NULL && super_klass->has_nonstatic_fields()); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3023 bool has_nonstatic_fields = super_has_nonstatic_fields || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3024 ((nonstatic_double_count + nonstatic_word_count + |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3025 nonstatic_short_count + nonstatic_byte_count + |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3026 nonstatic_oop_count) != 0); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3027 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3028 |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3029 // Prepare list of oops for oop map generation. |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3030 int* nonstatic_oop_offsets; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3031 unsigned int* nonstatic_oop_counts; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3032 unsigned int nonstatic_oop_map_count = 0; |
0 | 3033 |
3034 nonstatic_oop_offsets = NEW_RESOURCE_ARRAY_IN_THREAD( | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3035 THREAD, int, nonstatic_oop_count + 1); |
938 | 3036 nonstatic_oop_counts = NEW_RESOURCE_ARRAY_IN_THREAD( |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3037 THREAD, unsigned int, nonstatic_oop_count + 1); |
0 | 3038 |
3039 // Add fake fields for java.lang.Class instances (also see above). | |
3040 // FieldsAllocationStyle and CompactFields values will be reset to default. | |
3041 if(class_name() == vmSymbols::java_lang_Class() && class_loader.is_null()) { | |
3042 java_lang_Class_fix_post(&next_nonstatic_field_offset); | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3043 nonstatic_oop_offsets[0] = first_nonstatic_field_offset; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3044 const uint fake_oop_count = (next_nonstatic_field_offset - |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3045 first_nonstatic_field_offset) / heapOopSize; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3046 nonstatic_oop_counts[0] = fake_oop_count; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3047 nonstatic_oop_map_count = 1; |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3048 nonstatic_oop_count -= fake_oop_count; |
0 | 3049 first_nonstatic_oop_offset = first_nonstatic_field_offset; |
3050 } else { | |
3051 first_nonstatic_oop_offset = 0; // will be set for first oop field | |
3052 } | |
3053 | |
3054 #ifndef PRODUCT | |
3055 if( PrintCompactFieldsSavings ) { | |
3056 next_nonstatic_double_offset = next_nonstatic_field_offset + | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3057 (nonstatic_oop_count * heapOopSize); |
0 | 3058 if ( nonstatic_double_count > 0 ) { |
3059 next_nonstatic_double_offset = align_size_up(next_nonstatic_double_offset, BytesPerLong); | |
3060 } | |
3061 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3062 (nonstatic_double_count * BytesPerLong); | |
3063 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3064 (nonstatic_word_count * BytesPerInt); | |
3065 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3066 (nonstatic_short_count * BytesPerShort); | |
3067 next_nonstatic_type_offset = align_size_up((next_nonstatic_byte_offset + | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3068 nonstatic_byte_count ), heapOopSize ); |
0 | 3069 orig_nonstatic_field_size = nonstatic_field_size + |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3070 ((next_nonstatic_type_offset - first_nonstatic_field_offset)/heapOopSize); |
0 | 3071 } |
3072 #endif | |
3073 bool compact_fields = CompactFields; | |
3074 int allocation_style = FieldsAllocationStyle; | |
1366
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3075 if( allocation_style < 0 || allocation_style > 2 ) { // Out of range? |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3076 assert(false, "0 <= FieldsAllocationStyle <= 2"); |
0 | 3077 allocation_style = 1; // Optimistic |
3078 } | |
3079 | |
3080 // The next classes have predefined hard-coded fields offsets | |
3081 // (see in JavaClasses::compute_hard_coded_offsets()). | |
3082 // Use default fields allocation order for them. | |
3083 if( (allocation_style != 0 || compact_fields ) && class_loader.is_null() && | |
3084 (class_name() == vmSymbols::java_lang_AssertionStatusDirectives() || | |
3085 class_name() == vmSymbols::java_lang_Class() || | |
3086 class_name() == vmSymbols::java_lang_ClassLoader() || | |
3087 class_name() == vmSymbols::java_lang_ref_Reference() || | |
3088 class_name() == vmSymbols::java_lang_ref_SoftReference() || | |
3089 class_name() == vmSymbols::java_lang_StackTraceElement() || | |
3090 class_name() == vmSymbols::java_lang_String() || | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3091 class_name() == vmSymbols::java_lang_Throwable() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3092 class_name() == vmSymbols::java_lang_Boolean() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3093 class_name() == vmSymbols::java_lang_Character() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3094 class_name() == vmSymbols::java_lang_Float() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3095 class_name() == vmSymbols::java_lang_Double() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3096 class_name() == vmSymbols::java_lang_Byte() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3097 class_name() == vmSymbols::java_lang_Short() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3098 class_name() == vmSymbols::java_lang_Integer() || |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3099 class_name() == vmSymbols::java_lang_Long())) { |
0 | 3100 allocation_style = 0; // Allocate oops first |
3101 compact_fields = false; // Don't compact fields | |
3102 } | |
3103 | |
3104 if( allocation_style == 0 ) { | |
3105 // Fields order: oops, longs/doubles, ints, shorts/chars, bytes | |
3106 next_nonstatic_oop_offset = next_nonstatic_field_offset; | |
3107 next_nonstatic_double_offset = next_nonstatic_oop_offset + | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3108 (nonstatic_oop_count * heapOopSize); |
0 | 3109 } else if( allocation_style == 1 ) { |
3110 // Fields order: longs/doubles, ints, shorts/chars, bytes, oops | |
3111 next_nonstatic_double_offset = next_nonstatic_field_offset; | |
1366
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3112 } else if( allocation_style == 2 ) { |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3113 // Fields allocation: oops fields in super and sub classes are together. |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3114 if( nonstatic_field_size > 0 && super_klass() != NULL && |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3115 super_klass->nonstatic_oop_map_size() > 0 ) { |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3116 int map_size = super_klass->nonstatic_oop_map_size(); |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3117 OopMapBlock* first_map = super_klass->start_of_nonstatic_oop_maps(); |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3118 OopMapBlock* last_map = first_map + map_size - 1; |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3119 int next_offset = last_map->offset() + (last_map->count() * heapOopSize); |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3120 if (next_offset == next_nonstatic_field_offset) { |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3121 allocation_style = 0; // allocate oops first |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3122 next_nonstatic_oop_offset = next_nonstatic_field_offset; |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3123 next_nonstatic_double_offset = next_nonstatic_oop_offset + |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3124 (nonstatic_oop_count * heapOopSize); |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3125 } |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3126 } |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3127 if( allocation_style == 2 ) { |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3128 allocation_style = 1; // allocate oops last |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3129 next_nonstatic_double_offset = next_nonstatic_field_offset; |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1144
diff
changeset
|
3130 } |
0 | 3131 } else { |
3132 ShouldNotReachHere(); | |
3133 } | |
3134 | |
3135 int nonstatic_oop_space_count = 0; | |
3136 int nonstatic_word_space_count = 0; | |
3137 int nonstatic_short_space_count = 0; | |
3138 int nonstatic_byte_space_count = 0; | |
3139 int nonstatic_oop_space_offset; | |
3140 int nonstatic_word_space_offset; | |
3141 int nonstatic_short_space_offset; | |
3142 int nonstatic_byte_space_offset; | |
3143 | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3144 if( nonstatic_double_count > 0 ) { |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3145 int offset = next_nonstatic_double_offset; |
0 | 3146 next_nonstatic_double_offset = align_size_up(offset, BytesPerLong); |
3147 if( compact_fields && offset != next_nonstatic_double_offset ) { | |
3148 // Allocate available fields into the gap before double field. | |
3149 int length = next_nonstatic_double_offset - offset; | |
3150 assert(length == BytesPerInt, ""); | |
3151 nonstatic_word_space_offset = offset; | |
3152 if( nonstatic_word_count > 0 ) { | |
3153 nonstatic_word_count -= 1; | |
3154 nonstatic_word_space_count = 1; // Only one will fit | |
3155 length -= BytesPerInt; | |
3156 offset += BytesPerInt; | |
3157 } | |
3158 nonstatic_short_space_offset = offset; | |
3159 while( length >= BytesPerShort && nonstatic_short_count > 0 ) { | |
3160 nonstatic_short_count -= 1; | |
3161 nonstatic_short_space_count += 1; | |
3162 length -= BytesPerShort; | |
3163 offset += BytesPerShort; | |
3164 } | |
3165 nonstatic_byte_space_offset = offset; | |
3166 while( length > 0 && nonstatic_byte_count > 0 ) { | |
3167 nonstatic_byte_count -= 1; | |
3168 nonstatic_byte_space_count += 1; | |
3169 length -= 1; | |
3170 } | |
3171 // Allocate oop field in the gap if there are no other fields for that. | |
3172 nonstatic_oop_space_offset = offset; | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3173 if( length >= heapOopSize && nonstatic_oop_count > 0 && |
0 | 3174 allocation_style != 0 ) { // when oop fields not first |
3175 nonstatic_oop_count -= 1; | |
3176 nonstatic_oop_space_count = 1; // Only one will fit | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3177 length -= heapOopSize; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3178 offset += heapOopSize; |
0 | 3179 } |
3180 } | |
3181 } | |
3182 | |
3183 next_nonstatic_word_offset = next_nonstatic_double_offset + | |
3184 (nonstatic_double_count * BytesPerLong); | |
3185 next_nonstatic_short_offset = next_nonstatic_word_offset + | |
3186 (nonstatic_word_count * BytesPerInt); | |
3187 next_nonstatic_byte_offset = next_nonstatic_short_offset + | |
3188 (nonstatic_short_count * BytesPerShort); | |
3189 | |
3190 int notaligned_offset; | |
3191 if( allocation_style == 0 ) { | |
3192 notaligned_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
3193 } else { // allocation_style == 1 | |
3194 next_nonstatic_oop_offset = next_nonstatic_byte_offset + nonstatic_byte_count; | |
3195 if( nonstatic_oop_count > 0 ) { | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3196 next_nonstatic_oop_offset = align_size_up(next_nonstatic_oop_offset, heapOopSize); |
0 | 3197 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3198 notaligned_offset = next_nonstatic_oop_offset + (nonstatic_oop_count * heapOopSize); |
0 | 3199 } |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3200 next_nonstatic_type_offset = align_size_up(notaligned_offset, heapOopSize ); |
0 | 3201 nonstatic_field_size = nonstatic_field_size + ((next_nonstatic_type_offset |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3202 - first_nonstatic_field_offset)/heapOopSize); |
0 | 3203 |
3204 // Iterate over fields again and compute correct offsets. | |
3205 // The field allocation type was temporarily stored in the offset slot. | |
3206 // oop fields are located before non-oop fields (static and non-static). | |
3207 int len = fields->length(); | |
3208 for (int i = 0; i < len; i += instanceKlass::next_offset) { | |
3209 int real_offset; | |
1108 | 3210 FieldAllocationType atype = (FieldAllocationType) fields->ushort_at(i + instanceKlass::low_offset); |
0 | 3211 switch (atype) { |
3212 case STATIC_OOP: | |
3213 real_offset = next_static_oop_offset; | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3214 next_static_oop_offset += heapOopSize; |
0 | 3215 break; |
3216 case STATIC_BYTE: | |
3217 real_offset = next_static_byte_offset; | |
3218 next_static_byte_offset += 1; | |
3219 break; | |
3220 case STATIC_SHORT: | |
3221 real_offset = next_static_short_offset; | |
3222 next_static_short_offset += BytesPerShort; | |
3223 break; | |
3224 case STATIC_WORD: | |
3225 real_offset = next_static_word_offset; | |
3226 next_static_word_offset += BytesPerInt; | |
3227 break; | |
3228 case STATIC_ALIGNED_DOUBLE: | |
3229 case STATIC_DOUBLE: | |
3230 real_offset = next_static_double_offset; | |
3231 next_static_double_offset += BytesPerLong; | |
3232 break; | |
3233 case NONSTATIC_OOP: | |
3234 if( nonstatic_oop_space_count > 0 ) { | |
3235 real_offset = nonstatic_oop_space_offset; | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3236 nonstatic_oop_space_offset += heapOopSize; |
0 | 3237 nonstatic_oop_space_count -= 1; |
3238 } else { | |
3239 real_offset = next_nonstatic_oop_offset; | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
92
diff
changeset
|
3240 next_nonstatic_oop_offset += heapOopSize; |
0 | 3241 } |
3242 // Update oop maps | |
3243 if( nonstatic_oop_map_count > 0 && | |
3244 nonstatic_oop_offsets[nonstatic_oop_map_count - 1] == | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3245 real_offset - |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3246 int(nonstatic_oop_counts[nonstatic_oop_map_count - 1]) * |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3247 heapOopSize ) { |
0 | 3248 // Extend current oop map |
938 | 3249 nonstatic_oop_counts[nonstatic_oop_map_count - 1] += 1; |
0 | 3250 } else { |
3251 // Create new oop map | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3252 nonstatic_oop_offsets[nonstatic_oop_map_count] = real_offset; |
938 | 3253 nonstatic_oop_counts [nonstatic_oop_map_count] = 1; |
0 | 3254 nonstatic_oop_map_count += 1; |
3255 if( first_nonstatic_oop_offset == 0 ) { // Undefined | |
3256 first_nonstatic_oop_offset = real_offset; | |
3257 } | |
3258 } | |
3259 break; | |
3260 case NONSTATIC_BYTE: | |
3261 if( nonstatic_byte_space_count > 0 ) { | |
3262 real_offset = nonstatic_byte_space_offset; | |
3263 nonstatic_byte_space_offset += 1; | |
3264 nonstatic_byte_space_count -= 1; | |
3265 } else { | |
3266 real_offset = next_nonstatic_byte_offset; | |
3267 next_nonstatic_byte_offset += 1; | |
3268 } | |
3269 break; | |
3270 case NONSTATIC_SHORT: | |
3271 if( nonstatic_short_space_count > 0 ) { | |
3272 real_offset = nonstatic_short_space_offset; | |
3273 nonstatic_short_space_offset += BytesPerShort; | |
3274 nonstatic_short_space_count -= 1; | |
3275 } else { | |
3276 real_offset = next_nonstatic_short_offset; | |
3277 next_nonstatic_short_offset += BytesPerShort; | |
3278 } | |
3279 break; | |
3280 case NONSTATIC_WORD: | |
3281 if( nonstatic_word_space_count > 0 ) { | |
3282 real_offset = nonstatic_word_space_offset; | |
3283 nonstatic_word_space_offset += BytesPerInt; | |
3284 nonstatic_word_space_count -= 1; | |
3285 } else { | |
3286 real_offset = next_nonstatic_word_offset; | |
3287 next_nonstatic_word_offset += BytesPerInt; | |
3288 } | |
3289 break; | |
3290 case NONSTATIC_ALIGNED_DOUBLE: | |
3291 case NONSTATIC_DOUBLE: | |
3292 real_offset = next_nonstatic_double_offset; | |
3293 next_nonstatic_double_offset += BytesPerLong; | |
3294 break; | |
3295 default: | |
3296 ShouldNotReachHere(); | |
3297 } | |
1108 | 3298 fields->short_at_put(i + instanceKlass::low_offset, extract_low_short_from_int(real_offset)); |
3299 fields->short_at_put(i + instanceKlass::high_offset, extract_high_short_from_int(real_offset)); | |
0 | 3300 } |
3301 | |
3302 // Size of instances | |
3303 int instance_size; | |
3304 | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3305 next_nonstatic_type_offset = align_size_up(notaligned_offset, wordSize ); |
0 | 3306 instance_size = align_object_size(next_nonstatic_type_offset / wordSize); |
3307 | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3308 assert(instance_size == align_object_size(align_size_up((instanceOopDesc::base_offset_in_bytes() + nonstatic_field_size*heapOopSize), wordSize) / wordSize), "consistent layout helper value"); |
0 | 3309 |
938 | 3310 // Number of non-static oop map blocks allocated at end of klass. |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3311 const unsigned int total_oop_map_count = |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3312 compute_oop_map_count(super_klass, nonstatic_oop_map_count, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3313 first_nonstatic_oop_offset); |
0 | 3314 |
3315 // Compute reference type | |
3316 ReferenceType rt; | |
3317 if (super_klass() == NULL) { | |
3318 rt = REF_NONE; | |
3319 } else { | |
3320 rt = super_klass->reference_type(); | |
3321 } | |
3322 | |
3323 // We can now create the basic klassOop for this klass | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3324 klassOop ik = oopFactory::new_instanceKlass(vtable_size, itable_size, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3325 static_field_size, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3326 total_oop_map_count, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3327 rt, CHECK_(nullHandle)); |
0 | 3328 instanceKlassHandle this_klass (THREAD, ik); |
3329 | |
938 | 3330 assert(this_klass->static_field_size() == static_field_size, "sanity"); |
3331 assert(this_klass->nonstatic_oop_map_count() == total_oop_map_count, | |
3332 "sanity"); | |
0 | 3333 |
3334 // Fill in information already parsed | |
3335 this_klass->set_access_flags(access_flags); | |
975 | 3336 this_klass->set_should_verify_class(verify); |
0 | 3337 jint lh = Klass::instance_layout_helper(instance_size, false); |
3338 this_klass->set_layout_helper(lh); | |
3339 assert(this_klass->oop_is_instance(), "layout is correct"); | |
3340 assert(this_klass->size_helper() == instance_size, "correct size_helper"); | |
3341 // Not yet: supers are done below to support the new subtype-checking fields | |
3342 //this_klass->set_super(super_klass()); | |
3343 this_klass->set_class_loader(class_loader()); | |
3344 this_klass->set_nonstatic_field_size(nonstatic_field_size); | |
975 | 3345 this_klass->set_has_nonstatic_fields(has_nonstatic_fields); |
0 | 3346 this_klass->set_static_oop_field_size(fac.static_oop_count); |
3347 cp->set_pool_holder(this_klass()); | |
3348 this_klass->set_constants(cp()); | |
3349 this_klass->set_local_interfaces(local_interfaces()); | |
3350 this_klass->set_fields(fields()); | |
3351 this_klass->set_methods(methods()); | |
3352 if (has_final_method) { | |
3353 this_klass->set_has_final_method(); | |
3354 } | |
3355 this_klass->set_method_ordering(method_ordering()); | |
977
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3356 // The instanceKlass::_methods_jmethod_ids cache and the |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3357 // instanceKlass::_methods_cached_itable_indices cache are |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3358 // both managed on the assumption that the initial cache |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3359 // size is equal to the number of methods in the class. If |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3360 // that changes, then instanceKlass::idnum_can_increment() |
74a5db69c1fe
6419370: 4/4 new jmethodID code has tiny holes in synchronization
dcubed
parents:
975
diff
changeset
|
3361 // has to be changed accordingly. |
0 | 3362 this_klass->set_initial_method_idnum(methods->length()); |
3363 this_klass->set_name(cp->klass_name_at(this_class_index)); | |
710 | 3364 if (LinkWellKnownClasses || is_anonymous()) // I am well known to myself |
474
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
431
diff
changeset
|
3365 cp->klass_at_put(this_class_index, this_klass()); // eagerly resolve |
0 | 3366 this_klass->set_protection_domain(protection_domain()); |
3367 this_klass->set_fields_annotations(fields_annotations()); | |
3368 this_klass->set_methods_annotations(methods_annotations()); | |
3369 this_klass->set_methods_parameter_annotations(methods_parameter_annotations()); | |
3370 this_klass->set_methods_default_annotations(methods_default_annotations()); | |
3371 | |
3372 this_klass->set_minor_version(minor_version); | |
3373 this_klass->set_major_version(major_version); | |
3374 | |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3375 // Set up methodOop::intrinsic_id as soon as we know the names of methods. |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3376 // (We used to do this lazily, but now we query it in Rewriter, |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3377 // which is eagerly done for every method, so we might as well do it now, |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3378 // when everything is fresh in memory.) |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3379 if (methodOopDesc::klass_id_for_intrinsics(this_klass->as_klassOop()) != vmSymbols::NO_SID) { |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3380 for (int j = 0; j < methods->length(); j++) { |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3381 ((methodOop)methods->obj_at(j))->init_intrinsic_id(); |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3382 } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3383 } |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
710
diff
changeset
|
3384 |
0 | 3385 if (cached_class_file_bytes != NULL) { |
3386 // JVMTI: we have an instanceKlass now, tell it about the cached bytes | |
3387 this_klass->set_cached_class_file(cached_class_file_bytes, | |
3388 cached_class_file_length); | |
3389 } | |
3390 | |
3391 // Miranda methods | |
3392 if ((num_miranda_methods > 0) || | |
3393 // if this class introduced new miranda methods or | |
3394 (super_klass.not_null() && (super_klass->has_miranda_methods())) | |
3395 // super class exists and this class inherited miranda methods | |
3396 ) { | |
3397 this_klass->set_has_miranda_methods(); // then set a flag | |
3398 } | |
3399 | |
3400 // Additional attributes | |
3401 parse_classfile_attributes(cp, this_klass, CHECK_(nullHandle)); | |
3402 | |
3403 // Make sure this is the end of class file stream | |
3404 guarantee_property(cfs->at_eos(), "Extra bytes at the end of class file %s", CHECK_(nullHandle)); | |
3405 | |
3406 // Initialize static fields | |
3407 this_klass->do_local_static_fields(&initialize_static_field, CHECK_(nullHandle)); | |
3408 | |
3409 // VerifyOops believes that once this has been set, the object is completely loaded. | |
3410 // Compute transitive closure of interfaces this class implements | |
3411 this_klass->set_transitive_interfaces(transitive_interfaces()); | |
3412 | |
3413 // Fill in information needed to compute superclasses. | |
3414 this_klass->initialize_supers(super_klass(), CHECK_(nullHandle)); | |
3415 | |
3416 // Initialize itable offset tables | |
3417 klassItable::setup_itable_offset_table(this_klass); | |
3418 | |
3419 // Do final class setup | |
938 | 3420 fill_oop_maps(this_klass, nonstatic_oop_map_count, nonstatic_oop_offsets, nonstatic_oop_counts); |
0 | 3421 |
3422 set_precomputed_flags(this_klass); | |
3423 | |
3424 // reinitialize modifiers, using the InnerClasses attribute | |
3425 int computed_modifiers = this_klass->compute_modifier_flags(CHECK_(nullHandle)); | |
3426 this_klass->set_modifier_flags(computed_modifiers); | |
3427 | |
3428 // check if this class can access its super class | |
3429 check_super_class_access(this_klass, CHECK_(nullHandle)); | |
3430 | |
3431 // check if this class can access its superinterfaces | |
3432 check_super_interface_access(this_klass, CHECK_(nullHandle)); | |
3433 | |
3434 // check if this class overrides any final method | |
3435 check_final_method_override(this_klass, CHECK_(nullHandle)); | |
3436 | |
3437 // check that if this class is an interface then it doesn't have static methods | |
3438 if (this_klass->is_interface()) { | |
3439 check_illegal_static_method(this_klass, CHECK_(nullHandle)); | |
3440 } | |
3441 | |
3442 ClassLoadingService::notify_class_loaded(instanceKlass::cast(this_klass()), | |
3443 false /* not shared class */); | |
3444 | |
3445 if (TraceClassLoading) { | |
3446 // print in a single call to reduce interleaving of output | |
3447 if (cfs->source() != NULL) { | |
3448 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
3449 cfs->source()); | |
3450 } else if (class_loader.is_null()) { | |
3451 if (THREAD->is_Java_thread()) { | |
3452 klassOop caller = ((JavaThread*)THREAD)->security_get_caller_class(1); | |
3453 tty->print("[Loaded %s by instance of %s]\n", | |
3454 this_klass->external_name(), | |
3455 instanceKlass::cast(caller)->external_name()); | |
3456 } else { | |
3457 tty->print("[Loaded %s]\n", this_klass->external_name()); | |
3458 } | |
3459 } else { | |
3460 ResourceMark rm; | |
3461 tty->print("[Loaded %s from %s]\n", this_klass->external_name(), | |
3462 instanceKlass::cast(class_loader->klass())->external_name()); | |
3463 } | |
3464 } | |
3465 | |
3466 if (TraceClassResolution) { | |
3467 // print out the superclass. | |
3468 const char * from = Klass::cast(this_klass())->external_name(); | |
3469 if (this_klass->java_super() != NULL) { | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3470 tty->print("RESOLVE %s %s (super)\n", from, instanceKlass::cast(this_klass->java_super())->external_name()); |
0 | 3471 } |
3472 // print out each of the interface classes referred to by this class. | |
3473 objArrayHandle local_interfaces(THREAD, this_klass->local_interfaces()); | |
3474 if (!local_interfaces.is_null()) { | |
3475 int length = local_interfaces->length(); | |
3476 for (int i = 0; i < length; i++) { | |
3477 klassOop k = klassOop(local_interfaces->obj_at(i)); | |
3478 instanceKlass* to_class = instanceKlass::cast(k); | |
3479 const char * to = to_class->external_name(); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
652
diff
changeset
|
3480 tty->print("RESOLVE %s %s (interface)\n", from, to); |
0 | 3481 } |
3482 } | |
3483 } | |
3484 | |
3485 #ifndef PRODUCT | |
3486 if( PrintCompactFieldsSavings ) { | |
3487 if( nonstatic_field_size < orig_nonstatic_field_size ) { | |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3488 tty->print("[Saved %d of %d bytes in %s]\n", |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3489 (orig_nonstatic_field_size - nonstatic_field_size)*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3490 orig_nonstatic_field_size*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3491 this_klass->external_name()); |
0 | 3492 } else if( nonstatic_field_size > orig_nonstatic_field_size ) { |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3493 tty->print("[Wasted %d over %d bytes in %s]\n", |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3494 (nonstatic_field_size - orig_nonstatic_field_size)*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3495 orig_nonstatic_field_size*heapOopSize, |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
136
diff
changeset
|
3496 this_klass->external_name()); |
0 | 3497 } |
3498 } | |
3499 #endif | |
3500 | |
3501 // preserve result across HandleMark | |
3502 preserve_this_klass = this_klass(); | |
3503 } | |
3504 | |
3505 // Create new handle outside HandleMark | |
3506 instanceKlassHandle this_klass (THREAD, preserve_this_klass); | |
3507 debug_only(this_klass->as_klassOop()->verify();) | |
3508 | |
3509 return this_klass; | |
3510 } | |
3511 | |
3512 | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3513 unsigned int |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3514 ClassFileParser::compute_oop_map_count(instanceKlassHandle super, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3515 unsigned int nonstatic_oop_map_count, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3516 int first_nonstatic_oop_offset) { |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3517 unsigned int map_count = |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3518 super.is_null() ? 0 : super->nonstatic_oop_map_count(); |
0 | 3519 if (nonstatic_oop_map_count > 0) { |
3520 // We have oops to add to map | |
938 | 3521 if (map_count == 0) { |
3522 map_count = nonstatic_oop_map_count; | |
0 | 3523 } else { |
938 | 3524 // Check whether we should add a new map block or whether the last one can |
3525 // be extended | |
3526 OopMapBlock* const first_map = super->start_of_nonstatic_oop_maps(); | |
3527 OopMapBlock* const last_map = first_map + map_count - 1; | |
3528 | |
3529 int next_offset = last_map->offset() + last_map->count() * heapOopSize; | |
0 | 3530 if (next_offset == first_nonstatic_oop_offset) { |
3531 // There is no gap bettwen superklass's last oop field and first | |
3532 // local oop field, merge maps. | |
3533 nonstatic_oop_map_count -= 1; | |
3534 } else { | |
3535 // Superklass didn't end with a oop field, add extra maps | |
938 | 3536 assert(next_offset < first_nonstatic_oop_offset, "just checking"); |
0 | 3537 } |
938 | 3538 map_count += nonstatic_oop_map_count; |
0 | 3539 } |
3540 } | |
938 | 3541 return map_count; |
0 | 3542 } |
3543 | |
3544 | |
3545 void ClassFileParser::fill_oop_maps(instanceKlassHandle k, | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3546 unsigned int nonstatic_oop_map_count, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3547 int* nonstatic_oop_offsets, |
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3548 unsigned int* nonstatic_oop_counts) { |
0 | 3549 OopMapBlock* this_oop_map = k->start_of_nonstatic_oop_maps(); |
938 | 3550 const instanceKlass* const super = k->superklass(); |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3551 const unsigned int super_count = super ? super->nonstatic_oop_map_count() : 0; |
938 | 3552 if (super_count > 0) { |
3553 // Copy maps from superklass | |
0 | 3554 OopMapBlock* super_oop_map = super->start_of_nonstatic_oop_maps(); |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
3555 for (unsigned int i = 0; i < super_count; ++i) { |
0 | 3556 *this_oop_map++ = *super_oop_map++; |
3557 } | |
3558 } | |
938 | 3559 |
0 | 3560 if (nonstatic_oop_map_count > 0) { |
938 | 3561 if (super_count + nonstatic_oop_map_count > k->nonstatic_oop_map_count()) { |
3562 // The counts differ because there is no gap between superklass's last oop | |
3563 // field and the first local oop field. Extend the last oop map copied | |
0 | 3564 // from the superklass instead of creating new one. |
3565 nonstatic_oop_map_count--; | |
3566 nonstatic_oop_offsets++; | |
3567 this_oop_map--; | |
938 | 3568 this_oop_map->set_count(this_oop_map->count() + *nonstatic_oop_counts++); |
0 | 3569 this_oop_map++; |
3570 } | |
938 | 3571 |
0 | 3572 // Add new map blocks, fill them |
3573 while (nonstatic_oop_map_count-- > 0) { | |
3574 this_oop_map->set_offset(*nonstatic_oop_offsets++); | |
938 | 3575 this_oop_map->set_count(*nonstatic_oop_counts++); |
0 | 3576 this_oop_map++; |
3577 } | |
938 | 3578 assert(k->start_of_nonstatic_oop_maps() + k->nonstatic_oop_map_count() == |
3579 this_oop_map, "sanity"); | |
0 | 3580 } |
3581 } | |
3582 | |
3583 | |
3584 void ClassFileParser::set_precomputed_flags(instanceKlassHandle k) { | |
3585 klassOop super = k->super(); | |
3586 | |
3587 // Check if this klass has an empty finalize method (i.e. one with return bytecode only), | |
3588 // in which case we don't have to register objects as finalizable | |
3589 if (!_has_empty_finalizer) { | |
3590 if (_has_finalizer || | |
3591 (super != NULL && super->klass_part()->has_finalizer())) { | |
3592 k->set_has_finalizer(); | |
3593 } | |
3594 } | |
3595 | |
3596 #ifdef ASSERT | |
3597 bool f = false; | |
3598 methodOop m = k->lookup_method(vmSymbols::finalize_method_name(), | |
3599 vmSymbols::void_method_signature()); | |
3600 if (m != NULL && !m->is_empty_method()) { | |
3601 f = true; | |
3602 } | |
3603 assert(f == k->has_finalizer(), "inconsistent has_finalizer"); | |
3604 #endif | |
3605 | |
3606 // Check if this klass supports the java.lang.Cloneable interface | |
1142 | 3607 if (SystemDictionary::Cloneable_klass_loaded()) { |
3608 if (k->is_subtype_of(SystemDictionary::Cloneable_klass())) { | |
0 | 3609 k->set_is_cloneable(); |
3610 } | |
3611 } | |
3612 | |
3613 // Check if this klass has a vanilla default constructor | |
3614 if (super == NULL) { | |
3615 // java.lang.Object has empty default constructor | |
3616 k->set_has_vanilla_constructor(); | |
3617 } else { | |
3618 if (Klass::cast(super)->has_vanilla_constructor() && | |
3619 _has_vanilla_constructor) { | |
3620 k->set_has_vanilla_constructor(); | |
3621 } | |
3622 #ifdef ASSERT | |
3623 bool v = false; | |
3624 if (Klass::cast(super)->has_vanilla_constructor()) { | |
3625 methodOop constructor = k->find_method(vmSymbols::object_initializer_name( | |
3626 ), vmSymbols::void_method_signature()); | |
3627 if (constructor != NULL && constructor->is_vanilla_constructor()) { | |
3628 v = true; | |
3629 } | |
3630 } | |
3631 assert(v == k->has_vanilla_constructor(), "inconsistent has_vanilla_constructor"); | |
3632 #endif | |
3633 } | |
3634 | |
3635 // If it cannot be fast-path allocated, set a bit in the layout helper. | |
3636 // See documentation of instanceKlass::can_be_fastpath_allocated(). | |
3637 assert(k->size_helper() > 0, "layout_helper is initialized"); | |
3638 if ((!RegisterFinalizersAtInit && k->has_finalizer()) | |
3639 || k->is_abstract() || k->is_interface() | |
3640 || (k->name() == vmSymbols::java_lang_Class() | |
3641 && k->class_loader() == NULL) | |
3642 || k->size_helper() >= FastAllocateSizeLimit) { | |
3643 // Forbid fast-path allocation. | |
3644 jint lh = Klass::instance_layout_helper(k->size_helper(), true); | |
3645 k->set_layout_helper(lh); | |
3646 } | |
3647 } | |
3648 | |
3649 | |
3650 // utility method for appending and array with check for duplicates | |
3651 | |
3652 void append_interfaces(objArrayHandle result, int& index, objArrayOop ifs) { | |
3653 // iterate over new interfaces | |
3654 for (int i = 0; i < ifs->length(); i++) { | |
3655 oop e = ifs->obj_at(i); | |
3656 assert(e->is_klass() && instanceKlass::cast(klassOop(e))->is_interface(), "just checking"); | |
3657 // check for duplicates | |
3658 bool duplicate = false; | |
3659 for (int j = 0; j < index; j++) { | |
3660 if (result->obj_at(j) == e) { | |
3661 duplicate = true; | |
3662 break; | |
3663 } | |
3664 } | |
3665 // add new interface | |
3666 if (!duplicate) { | |
3667 result->obj_at_put(index++, e); | |
3668 } | |
3669 } | |
3670 } | |
3671 | |
3672 objArrayHandle ClassFileParser::compute_transitive_interfaces(instanceKlassHandle super, objArrayHandle local_ifs, TRAPS) { | |
3673 // Compute maximum size for transitive interfaces | |
3674 int max_transitive_size = 0; | |
3675 int super_size = 0; | |
3676 // Add superclass transitive interfaces size | |
3677 if (super.not_null()) { | |
3678 super_size = super->transitive_interfaces()->length(); | |
3679 max_transitive_size += super_size; | |
3680 } | |
3681 // Add local interfaces' super interfaces | |
3682 int local_size = local_ifs->length(); | |
3683 for (int i = 0; i < local_size; i++) { | |
3684 klassOop l = klassOop(local_ifs->obj_at(i)); | |
3685 max_transitive_size += instanceKlass::cast(l)->transitive_interfaces()->length(); | |
3686 } | |
3687 // Finally add local interfaces | |
3688 max_transitive_size += local_size; | |
3689 // Construct array | |
3690 objArrayHandle result; | |
3691 if (max_transitive_size == 0) { | |
3692 // no interfaces, use canonicalized array | |
3693 result = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); | |
3694 } else if (max_transitive_size == super_size) { | |
3695 // no new local interfaces added, share superklass' transitive interface array | |
3696 result = objArrayHandle(THREAD, super->transitive_interfaces()); | |
3697 } else if (max_transitive_size == local_size) { | |
3698 // only local interfaces added, share local interface array | |
3699 result = local_ifs; | |
3700 } else { | |
3701 objArrayHandle nullHandle; | |
3702 objArrayOop new_objarray = oopFactory::new_system_objArray(max_transitive_size, CHECK_(nullHandle)); | |
3703 result = objArrayHandle(THREAD, new_objarray); | |
3704 int index = 0; | |
3705 // Copy down from superclass | |
3706 if (super.not_null()) { | |
3707 append_interfaces(result, index, super->transitive_interfaces()); | |
3708 } | |
3709 // Copy down from local interfaces' superinterfaces | |
3710 for (int i = 0; i < local_ifs->length(); i++) { | |
3711 klassOop l = klassOop(local_ifs->obj_at(i)); | |
3712 append_interfaces(result, index, instanceKlass::cast(l)->transitive_interfaces()); | |
3713 } | |
3714 // Finally add local interfaces | |
3715 append_interfaces(result, index, local_ifs()); | |
3716 | |
3717 // Check if duplicates were removed | |
3718 if (index != max_transitive_size) { | |
3719 assert(index < max_transitive_size, "just checking"); | |
3720 objArrayOop new_result = oopFactory::new_system_objArray(index, CHECK_(nullHandle)); | |
3721 for (int i = 0; i < index; i++) { | |
3722 oop e = result->obj_at(i); | |
3723 assert(e != NULL, "just checking"); | |
3724 new_result->obj_at_put(i, e); | |
3725 } | |
3726 result = objArrayHandle(THREAD, new_result); | |
3727 } | |
3728 } | |
3729 return result; | |
3730 } | |
3731 | |
3732 | |
3733 void ClassFileParser::check_super_class_access(instanceKlassHandle this_klass, TRAPS) { | |
3734 klassOop super = this_klass->super(); | |
3735 if ((super != NULL) && | |
3736 (!Reflection::verify_class_access(this_klass->as_klassOop(), super, false))) { | |
3737 ResourceMark rm(THREAD); | |
3738 Exceptions::fthrow( | |
3739 THREAD_AND_LOCATION, | |
3740 vmSymbolHandles::java_lang_IllegalAccessError(), | |
3741 "class %s cannot access its superclass %s", | |
3742 this_klass->external_name(), | |
3743 instanceKlass::cast(super)->external_name() | |
3744 ); | |
3745 return; | |
3746 } | |
3747 } | |
3748 | |
3749 | |
3750 void ClassFileParser::check_super_interface_access(instanceKlassHandle this_klass, TRAPS) { | |
3751 objArrayHandle local_interfaces (THREAD, this_klass->local_interfaces()); | |
3752 int lng = local_interfaces->length(); | |
3753 for (int i = lng - 1; i >= 0; i--) { | |
3754 klassOop k = klassOop(local_interfaces->obj_at(i)); | |
3755 assert (k != NULL && Klass::cast(k)->is_interface(), "invalid interface"); | |
3756 if (!Reflection::verify_class_access(this_klass->as_klassOop(), k, false)) { | |
3757 ResourceMark rm(THREAD); | |
3758 Exceptions::fthrow( | |
3759 THREAD_AND_LOCATION, | |
3760 vmSymbolHandles::java_lang_IllegalAccessError(), | |
3761 "class %s cannot access its superinterface %s", | |
3762 this_klass->external_name(), | |
3763 instanceKlass::cast(k)->external_name() | |
3764 ); | |
3765 return; | |
3766 } | |
3767 } | |
3768 } | |
3769 | |
3770 | |
3771 void ClassFileParser::check_final_method_override(instanceKlassHandle this_klass, TRAPS) { | |
3772 objArrayHandle methods (THREAD, this_klass->methods()); | |
3773 int num_methods = methods->length(); | |
3774 | |
3775 // go thru each method and check if it overrides a final method | |
3776 for (int index = 0; index < num_methods; index++) { | |
3777 methodOop m = (methodOop)methods->obj_at(index); | |
3778 | |
3779 // skip private, static and <init> methods | |
3780 if ((!m->is_private()) && | |
3781 (!m->is_static()) && | |
3782 (m->name() != vmSymbols::object_initializer_name())) { | |
3783 | |
3784 symbolOop name = m->name(); | |
3785 symbolOop signature = m->signature(); | |
3786 klassOop k = this_klass->super(); | |
3787 methodOop super_m = NULL; | |
3788 while (k != NULL) { | |
3789 // skip supers that don't have final methods. | |
3790 if (k->klass_part()->has_final_method()) { | |
3791 // lookup a matching method in the super class hierarchy | |
3792 super_m = instanceKlass::cast(k)->lookup_method(name, signature); | |
3793 if (super_m == NULL) { | |
3794 break; // didn't find any match; get out | |
3795 } | |
3796 | |
3797 if (super_m->is_final() && | |
3798 // matching method in super is final | |
3799 (Reflection::verify_field_access(this_klass->as_klassOop(), | |
3800 super_m->method_holder(), | |
3801 super_m->method_holder(), | |
3802 super_m->access_flags(), false)) | |
3803 // this class can access super final method and therefore override | |
3804 ) { | |
3805 ResourceMark rm(THREAD); | |
3806 Exceptions::fthrow( | |
3807 THREAD_AND_LOCATION, | |
3808 vmSymbolHandles::java_lang_VerifyError(), | |
3809 "class %s overrides final method %s.%s", | |
3810 this_klass->external_name(), | |
3811 name->as_C_string(), | |
3812 signature->as_C_string() | |
3813 ); | |
3814 return; | |
3815 } | |
3816 | |
3817 // continue to look from super_m's holder's super. | |
3818 k = instanceKlass::cast(super_m->method_holder())->super(); | |
3819 continue; | |
3820 } | |
3821 | |
3822 k = k->klass_part()->super(); | |
3823 } | |
3824 } | |
3825 } | |
3826 } | |
3827 | |
3828 | |
3829 // assumes that this_klass is an interface | |
3830 void ClassFileParser::check_illegal_static_method(instanceKlassHandle this_klass, TRAPS) { | |
3831 assert(this_klass->is_interface(), "not an interface"); | |
3832 objArrayHandle methods (THREAD, this_klass->methods()); | |
3833 int num_methods = methods->length(); | |
3834 | |
3835 for (int index = 0; index < num_methods; index++) { | |
3836 methodOop m = (methodOop)methods->obj_at(index); | |
3837 // if m is static and not the init method, throw a verify error | |
3838 if ((m->is_static()) && (m->name() != vmSymbols::class_initializer_name())) { | |
3839 ResourceMark rm(THREAD); | |
3840 Exceptions::fthrow( | |
3841 THREAD_AND_LOCATION, | |
3842 vmSymbolHandles::java_lang_VerifyError(), | |
3843 "Illegal static method %s in interface %s", | |
3844 m->name()->as_C_string(), | |
3845 this_klass->external_name() | |
3846 ); | |
3847 return; | |
3848 } | |
3849 } | |
3850 } | |
3851 | |
3852 // utility methods for format checking | |
3853 | |
3854 void ClassFileParser::verify_legal_class_modifiers(jint flags, TRAPS) { | |
3855 if (!_need_verify) { return; } | |
3856 | |
3857 const bool is_interface = (flags & JVM_ACC_INTERFACE) != 0; | |
3858 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
3859 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
3860 const bool is_super = (flags & JVM_ACC_SUPER) != 0; | |
3861 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
3862 const bool is_annotation = (flags & JVM_ACC_ANNOTATION) != 0; | |
3863 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
3864 | |
3865 if ((is_abstract && is_final) || | |
3866 (is_interface && !is_abstract) || | |
3867 (is_interface && major_gte_15 && (is_super || is_enum)) || | |
3868 (!is_interface && major_gte_15 && is_annotation)) { | |
3869 ResourceMark rm(THREAD); | |
3870 Exceptions::fthrow( | |
3871 THREAD_AND_LOCATION, | |
3872 vmSymbolHandles::java_lang_ClassFormatError(), | |
3873 "Illegal class modifiers in class %s: 0x%X", | |
3874 _class_name->as_C_string(), flags | |
3875 ); | |
3876 return; | |
3877 } | |
3878 } | |
3879 | |
3880 bool ClassFileParser::has_illegal_visibility(jint flags) { | |
3881 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
3882 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
3883 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
3884 | |
3885 return ((is_public && is_protected) || | |
3886 (is_public && is_private) || | |
3887 (is_protected && is_private)); | |
3888 } | |
3889 | |
3890 bool ClassFileParser::is_supported_version(u2 major, u2 minor) { | |
1124
2e8bdfdd3ba2
6899467: System property java.class.version out-of-sync with VM for jdk 5.0 with HS 16 in nightly build
xlu
parents:
977
diff
changeset
|
3891 u2 max_version = |
2e8bdfdd3ba2
6899467: System property java.class.version out-of-sync with VM for jdk 5.0 with HS 16 in nightly build
xlu
parents:
977
diff
changeset
|
3892 JDK_Version::is_gte_jdk17x_version() ? JAVA_MAX_SUPPORTED_VERSION : |
2e8bdfdd3ba2
6899467: System property java.class.version out-of-sync with VM for jdk 5.0 with HS 16 in nightly build
xlu
parents:
977
diff
changeset
|
3893 (JDK_Version::is_gte_jdk16x_version() ? JAVA_6_VERSION : JAVA_1_5_VERSION); |
0 | 3894 return (major >= JAVA_MIN_SUPPORTED_VERSION) && |
176
6b648fefb395
6705523: Fix for 6695506 will violate spec when used in JDK6
kamg
parents:
136
diff
changeset
|
3895 (major <= max_version) && |
6b648fefb395
6705523: Fix for 6695506 will violate spec when used in JDK6
kamg
parents:
136
diff
changeset
|
3896 ((major != max_version) || |
0 | 3897 (minor <= JAVA_MAX_SUPPORTED_MINOR_VERSION)); |
3898 } | |
3899 | |
3900 void ClassFileParser::verify_legal_field_modifiers( | |
3901 jint flags, bool is_interface, TRAPS) { | |
3902 if (!_need_verify) { return; } | |
3903 | |
3904 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
3905 const bool is_protected = (flags & JVM_ACC_PROTECTED) != 0; | |
3906 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
3907 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
3908 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
3909 const bool is_volatile = (flags & JVM_ACC_VOLATILE) != 0; | |
3910 const bool is_transient = (flags & JVM_ACC_TRANSIENT) != 0; | |
3911 const bool is_enum = (flags & JVM_ACC_ENUM) != 0; | |
3912 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
3913 | |
3914 bool is_illegal = false; | |
3915 | |
3916 if (is_interface) { | |
3917 if (!is_public || !is_static || !is_final || is_private || | |
3918 is_protected || is_volatile || is_transient || | |
3919 (major_gte_15 && is_enum)) { | |
3920 is_illegal = true; | |
3921 } | |
3922 } else { // not interface | |
3923 if (has_illegal_visibility(flags) || (is_final && is_volatile)) { | |
3924 is_illegal = true; | |
3925 } | |
3926 } | |
3927 | |
3928 if (is_illegal) { | |
3929 ResourceMark rm(THREAD); | |
3930 Exceptions::fthrow( | |
3931 THREAD_AND_LOCATION, | |
3932 vmSymbolHandles::java_lang_ClassFormatError(), | |
3933 "Illegal field modifiers in class %s: 0x%X", | |
3934 _class_name->as_C_string(), flags); | |
3935 return; | |
3936 } | |
3937 } | |
3938 | |
3939 void ClassFileParser::verify_legal_method_modifiers( | |
3940 jint flags, bool is_interface, symbolHandle name, TRAPS) { | |
3941 if (!_need_verify) { return; } | |
3942 | |
3943 const bool is_public = (flags & JVM_ACC_PUBLIC) != 0; | |
3944 const bool is_private = (flags & JVM_ACC_PRIVATE) != 0; | |
3945 const bool is_static = (flags & JVM_ACC_STATIC) != 0; | |
3946 const bool is_final = (flags & JVM_ACC_FINAL) != 0; | |
3947 const bool is_native = (flags & JVM_ACC_NATIVE) != 0; | |
3948 const bool is_abstract = (flags & JVM_ACC_ABSTRACT) != 0; | |
3949 const bool is_bridge = (flags & JVM_ACC_BRIDGE) != 0; | |
3950 const bool is_strict = (flags & JVM_ACC_STRICT) != 0; | |
3951 const bool is_synchronized = (flags & JVM_ACC_SYNCHRONIZED) != 0; | |
3952 const bool major_gte_15 = _major_version >= JAVA_1_5_VERSION; | |
3953 const bool is_initializer = (name == vmSymbols::object_initializer_name()); | |
3954 | |
3955 bool is_illegal = false; | |
3956 | |
3957 if (is_interface) { | |
3958 if (!is_abstract || !is_public || is_static || is_final || | |
3959 is_native || (major_gte_15 && (is_synchronized || is_strict))) { | |
3960 is_illegal = true; | |
3961 } | |
3962 } else { // not interface | |
3963 if (is_initializer) { | |
3964 if (is_static || is_final || is_synchronized || is_native || | |
3965 is_abstract || (major_gte_15 && is_bridge)) { | |
3966 is_illegal = true; | |
3967 } | |
3968 } else { // not initializer | |
3969 if (is_abstract) { | |
3970 if ((is_final || is_native || is_private || is_static || | |
3971 (major_gte_15 && (is_synchronized || is_strict)))) { | |
3972 is_illegal = true; | |
3973 } | |
3974 } | |
3975 if (has_illegal_visibility(flags)) { | |
3976 is_illegal = true; | |
3977 } | |
3978 } | |
3979 } | |
3980 | |
3981 if (is_illegal) { | |
3982 ResourceMark rm(THREAD); | |
3983 Exceptions::fthrow( | |
3984 THREAD_AND_LOCATION, | |
3985 vmSymbolHandles::java_lang_ClassFormatError(), | |
3986 "Method %s in class %s has illegal modifiers: 0x%X", | |
3987 name->as_C_string(), _class_name->as_C_string(), flags); | |
3988 return; | |
3989 } | |
3990 } | |
3991 | |
3992 void ClassFileParser::verify_legal_utf8(const unsigned char* buffer, int length, TRAPS) { | |
3993 assert(_need_verify, "only called when _need_verify is true"); | |
3994 int i = 0; | |
3995 int count = length >> 2; | |
3996 for (int k=0; k<count; k++) { | |
3997 unsigned char b0 = buffer[i]; | |
3998 unsigned char b1 = buffer[i+1]; | |
3999 unsigned char b2 = buffer[i+2]; | |
4000 unsigned char b3 = buffer[i+3]; | |
4001 // For an unsigned char v, | |
4002 // (v | v - 1) is < 128 (highest bit 0) for 0 < v < 128; | |
4003 // (v | v - 1) is >= 128 (highest bit 1) for v == 0 or v >= 128. | |
4004 unsigned char res = b0 | b0 - 1 | | |
4005 b1 | b1 - 1 | | |
4006 b2 | b2 - 1 | | |
4007 b3 | b3 - 1; | |
4008 if (res >= 128) break; | |
4009 i += 4; | |
4010 } | |
4011 for(; i < length; i++) { | |
4012 unsigned short c; | |
4013 // no embedded zeros | |
4014 guarantee_property((buffer[i] != 0), "Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4015 if(buffer[i] < 128) { | |
4016 continue; | |
4017 } | |
4018 if ((i + 5) < length) { // see if it's legal supplementary character | |
4019 if (UTF8::is_supplementary_character(&buffer[i])) { | |
4020 c = UTF8::get_supplementary_character(&buffer[i]); | |
4021 i += 5; | |
4022 continue; | |
4023 } | |
4024 } | |
4025 switch (buffer[i] >> 4) { | |
4026 default: break; | |
4027 case 0x8: case 0x9: case 0xA: case 0xB: case 0xF: | |
4028 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4029 case 0xC: case 0xD: // 110xxxxx 10xxxxxx | |
4030 c = (buffer[i] & 0x1F) << 6; | |
4031 i++; | |
4032 if ((i < length) && ((buffer[i] & 0xC0) == 0x80)) { | |
4033 c += buffer[i] & 0x3F; | |
4034 if (_major_version <= 47 || c == 0 || c >= 0x80) { | |
4035 // for classes with major > 47, c must a null or a character in its shortest form | |
4036 break; | |
4037 } | |
4038 } | |
4039 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4040 case 0xE: // 1110xxxx 10xxxxxx 10xxxxxx | |
4041 c = (buffer[i] & 0xF) << 12; | |
4042 i += 2; | |
4043 if ((i < length) && ((buffer[i-1] & 0xC0) == 0x80) && ((buffer[i] & 0xC0) == 0x80)) { | |
4044 c += ((buffer[i-1] & 0x3F) << 6) + (buffer[i] & 0x3F); | |
4045 if (_major_version <= 47 || c >= 0x800) { | |
4046 // for classes with major > 47, c must be in its shortest form | |
4047 break; | |
4048 } | |
4049 } | |
4050 classfile_parse_error("Illegal UTF8 string in constant pool in class file %s", CHECK); | |
4051 } // end of switch | |
4052 } // end of for | |
4053 } | |
4054 | |
4055 // Checks if name is a legal class name. | |
4056 void ClassFileParser::verify_legal_class_name(symbolHandle name, TRAPS) { | |
4057 if (!_need_verify || _relax_verify) { return; } | |
4058 | |
4059 char buf[fixed_buffer_size]; | |
4060 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4061 unsigned int length = name->utf8_length(); | |
4062 bool legal = false; | |
4063 | |
4064 if (length > 0) { | |
4065 char* p; | |
4066 if (bytes[0] == JVM_SIGNATURE_ARRAY) { | |
4067 p = skip_over_field_signature(bytes, false, length, CHECK); | |
4068 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4069 } else if (_major_version < JAVA_1_5_VERSION) { | |
4070 if (bytes[0] != '<') { | |
4071 p = skip_over_field_name(bytes, true, length); | |
4072 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4073 } | |
4074 } else { | |
4075 // 4900761: relax the constraints based on JSR202 spec | |
4076 // Class names may be drawn from the entire Unicode character set. | |
4077 // Identifiers between '/' must be unqualified names. | |
4078 // The utf8 string has been verified when parsing cpool entries. | |
4079 legal = verify_unqualified_name(bytes, length, LegalClass); | |
4080 } | |
4081 } | |
4082 if (!legal) { | |
4083 ResourceMark rm(THREAD); | |
4084 Exceptions::fthrow( | |
4085 THREAD_AND_LOCATION, | |
4086 vmSymbolHandles::java_lang_ClassFormatError(), | |
4087 "Illegal class name \"%s\" in class file %s", bytes, | |
4088 _class_name->as_C_string() | |
4089 ); | |
4090 return; | |
4091 } | |
4092 } | |
4093 | |
4094 // Checks if name is a legal field name. | |
4095 void ClassFileParser::verify_legal_field_name(symbolHandle name, TRAPS) { | |
4096 if (!_need_verify || _relax_verify) { return; } | |
4097 | |
4098 char buf[fixed_buffer_size]; | |
4099 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4100 unsigned int length = name->utf8_length(); | |
4101 bool legal = false; | |
4102 | |
4103 if (length > 0) { | |
4104 if (_major_version < JAVA_1_5_VERSION) { | |
4105 if (bytes[0] != '<') { | |
4106 char* p = skip_over_field_name(bytes, false, length); | |
4107 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4108 } | |
4109 } else { | |
4110 // 4881221: relax the constraints based on JSR202 spec | |
4111 legal = verify_unqualified_name(bytes, length, LegalField); | |
4112 } | |
4113 } | |
4114 | |
4115 if (!legal) { | |
4116 ResourceMark rm(THREAD); | |
4117 Exceptions::fthrow( | |
4118 THREAD_AND_LOCATION, | |
4119 vmSymbolHandles::java_lang_ClassFormatError(), | |
4120 "Illegal field name \"%s\" in class %s", bytes, | |
4121 _class_name->as_C_string() | |
4122 ); | |
4123 return; | |
4124 } | |
4125 } | |
4126 | |
4127 // Checks if name is a legal method name. | |
4128 void ClassFileParser::verify_legal_method_name(symbolHandle name, TRAPS) { | |
4129 if (!_need_verify || _relax_verify) { return; } | |
4130 | |
4131 assert(!name.is_null(), "method name is null"); | |
4132 char buf[fixed_buffer_size]; | |
4133 char* bytes = name->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4134 unsigned int length = name->utf8_length(); | |
4135 bool legal = false; | |
4136 | |
4137 if (length > 0) { | |
4138 if (bytes[0] == '<') { | |
4139 if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { | |
4140 legal = true; | |
4141 } | |
4142 } else if (_major_version < JAVA_1_5_VERSION) { | |
4143 char* p; | |
4144 p = skip_over_field_name(bytes, false, length); | |
4145 legal = (p != NULL) && ((p - bytes) == (int)length); | |
4146 } else { | |
4147 // 4881221: relax the constraints based on JSR202 spec | |
4148 legal = verify_unqualified_name(bytes, length, LegalMethod); | |
4149 } | |
4150 } | |
4151 | |
4152 if (!legal) { | |
4153 ResourceMark rm(THREAD); | |
4154 Exceptions::fthrow( | |
4155 THREAD_AND_LOCATION, | |
4156 vmSymbolHandles::java_lang_ClassFormatError(), | |
4157 "Illegal method name \"%s\" in class %s", bytes, | |
4158 _class_name->as_C_string() | |
4159 ); | |
4160 return; | |
4161 } | |
4162 } | |
4163 | |
4164 | |
4165 // Checks if signature is a legal field signature. | |
4166 void ClassFileParser::verify_legal_field_signature(symbolHandle name, symbolHandle signature, TRAPS) { | |
4167 if (!_need_verify) { return; } | |
4168 | |
4169 char buf[fixed_buffer_size]; | |
4170 char* bytes = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4171 unsigned int length = signature->utf8_length(); | |
4172 char* p = skip_over_field_signature(bytes, false, length, CHECK); | |
4173 | |
4174 if (p == NULL || (p - bytes) != (int)length) { | |
4175 ResourceMark rm(THREAD); | |
4176 Exceptions::fthrow( | |
4177 THREAD_AND_LOCATION, | |
4178 vmSymbolHandles::java_lang_ClassFormatError(), | |
4179 "Field \"%s\" in class %s has illegal signature \"%s\"", | |
4180 name->as_C_string(), _class_name->as_C_string(), bytes | |
4181 ); | |
4182 return; | |
4183 } | |
4184 } | |
4185 | |
4186 // Checks if signature is a legal method signature. | |
4187 // Returns number of parameters | |
4188 int ClassFileParser::verify_legal_method_signature(symbolHandle name, symbolHandle signature, TRAPS) { | |
4189 if (!_need_verify) { | |
4190 // make sure caller's args_size will be less than 0 even for non-static | |
4191 // method so it will be recomputed in compute_size_of_parameters(). | |
4192 return -2; | |
4193 } | |
4194 | |
4195 unsigned int args_size = 0; | |
4196 char buf[fixed_buffer_size]; | |
4197 char* p = signature->as_utf8_flexible_buffer(THREAD, buf, fixed_buffer_size); | |
4198 unsigned int length = signature->utf8_length(); | |
4199 char* nextp; | |
4200 | |
4201 // The first character must be a '(' | |
4202 if ((length > 0) && (*p++ == JVM_SIGNATURE_FUNC)) { | |
4203 length--; | |
4204 // Skip over legal field signatures | |
4205 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4206 while ((length > 0) && (nextp != NULL)) { | |
4207 args_size++; | |
4208 if (p[0] == 'J' || p[0] == 'D') { | |
4209 args_size++; | |
4210 } | |
4211 length -= nextp - p; | |
4212 p = nextp; | |
4213 nextp = skip_over_field_signature(p, false, length, CHECK_0); | |
4214 } | |
4215 // The first non-signature thing better be a ')' | |
4216 if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) { | |
4217 length--; | |
4218 if (name->utf8_length() > 0 && name->byte_at(0) == '<') { | |
4219 // All internal methods must return void | |
4220 if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) { | |
4221 return args_size; | |
4222 } | |
4223 } else { | |
4224 // Now we better just have a return value | |
4225 nextp = skip_over_field_signature(p, true, length, CHECK_0); | |
4226 if (nextp && ((int)length == (nextp - p))) { | |
4227 return args_size; | |
4228 } | |
4229 } | |
4230 } | |
4231 } | |
4232 // Report error | |
4233 ResourceMark rm(THREAD); | |
4234 Exceptions::fthrow( | |
4235 THREAD_AND_LOCATION, | |
4236 vmSymbolHandles::java_lang_ClassFormatError(), | |
4237 "Method \"%s\" in class %s has illegal signature \"%s\"", | |
4238 name->as_C_string(), _class_name->as_C_string(), p | |
4239 ); | |
4240 return 0; | |
4241 } | |
4242 | |
4243 | |
4244 // Unqualified names may not contain the characters '.', ';', or '/'. | |
4245 // Method names also may not contain the characters '<' or '>', unless <init> or <clinit>. | |
4246 // Note that method names may not be <init> or <clinit> in this method. | |
4247 // Because these names have been checked as special cases before calling this method | |
4248 // in verify_legal_method_name. | |
4249 bool ClassFileParser::verify_unqualified_name(char* name, unsigned int length, int type) { | |
4250 jchar ch; | |
4251 | |
4252 for (char* p = name; p != name + length; ) { | |
4253 ch = *p; | |
4254 if (ch < 128) { | |
4255 p++; | |
4256 if (ch == '.' || ch == ';') { | |
4257 return false; // do not permit '.' or ';' | |
4258 } | |
4259 if (type != LegalClass && ch == '/') { | |
4260 return false; // do not permit '/' unless it's class name | |
4261 } | |
4262 if (type == LegalMethod && (ch == '<' || ch == '>')) { | |
4263 return false; // do not permit '<' or '>' in method names | |
4264 } | |
4265 } else { | |
4266 char* tmp_p = UTF8::next(p, &ch); | |
4267 p = tmp_p; | |
4268 } | |
4269 } | |
4270 return true; | |
4271 } | |
4272 | |
4273 | |
4274 // Take pointer to a string. Skip over the longest part of the string that could | |
4275 // be taken as a fieldname. Allow '/' if slash_ok is true. | |
4276 // Return a pointer to just past the fieldname. | |
4277 // Return NULL if no fieldname at all was found, or in the case of slash_ok | |
4278 // being true, we saw consecutive slashes (meaning we were looking for a | |
4279 // qualified path but found something that was badly-formed). | |
4280 char* ClassFileParser::skip_over_field_name(char* name, bool slash_ok, unsigned int length) { | |
4281 char* p; | |
4282 jchar ch; | |
4283 jboolean last_is_slash = false; | |
4284 jboolean not_first_ch = false; | |
4285 | |
4286 for (p = name; p != name + length; not_first_ch = true) { | |
4287 char* old_p = p; | |
4288 ch = *p; | |
4289 if (ch < 128) { | |
4290 p++; | |
4291 // quick check for ascii | |
4292 if ((ch >= 'a' && ch <= 'z') || | |
4293 (ch >= 'A' && ch <= 'Z') || | |
4294 (ch == '_' || ch == '$') || | |
4295 (not_first_ch && ch >= '0' && ch <= '9')) { | |
4296 last_is_slash = false; | |
4297 continue; | |
4298 } | |
4299 if (slash_ok && ch == '/') { | |
4300 if (last_is_slash) { | |
4301 return NULL; // Don't permit consecutive slashes | |
4302 } | |
4303 last_is_slash = true; | |
4304 continue; | |
4305 } | |
4306 } else { | |
4307 jint unicode_ch; | |
4308 char* tmp_p = UTF8::next_character(p, &unicode_ch); | |
4309 p = tmp_p; | |
4310 last_is_slash = false; | |
4311 // Check if ch is Java identifier start or is Java identifier part | |
4312 // 4672820: call java.lang.Character methods directly without generating separate tables. | |
4313 EXCEPTION_MARK; | |
1142 | 4314 instanceKlassHandle klass (THREAD, SystemDictionary::Character_klass()); |
0 | 4315 |
4316 // return value | |
4317 JavaValue result(T_BOOLEAN); | |
4318 // Set up the arguments to isJavaIdentifierStart and isJavaIdentifierPart | |
4319 JavaCallArguments args; | |
4320 args.push_int(unicode_ch); | |
4321 | |
4322 // public static boolean isJavaIdentifierStart(char ch); | |
4323 JavaCalls::call_static(&result, | |
4324 klass, | |
4325 vmSymbolHandles::isJavaIdentifierStart_name(), | |
4326 vmSymbolHandles::int_bool_signature(), | |
4327 &args, | |
4328 THREAD); | |
4329 | |
4330 if (HAS_PENDING_EXCEPTION) { | |
4331 CLEAR_PENDING_EXCEPTION; | |
4332 return 0; | |
4333 } | |
4334 if (result.get_jboolean()) { | |
4335 continue; | |
4336 } | |
4337 | |
4338 if (not_first_ch) { | |
4339 // public static boolean isJavaIdentifierPart(char ch); | |
4340 JavaCalls::call_static(&result, | |
4341 klass, | |
4342 vmSymbolHandles::isJavaIdentifierPart_name(), | |
4343 vmSymbolHandles::int_bool_signature(), | |
4344 &args, | |
4345 THREAD); | |
4346 | |
4347 if (HAS_PENDING_EXCEPTION) { | |
4348 CLEAR_PENDING_EXCEPTION; | |
4349 return 0; | |
4350 } | |
4351 | |
4352 if (result.get_jboolean()) { | |
4353 continue; | |
4354 } | |
4355 } | |
4356 } | |
4357 return (not_first_ch) ? old_p : NULL; | |
4358 } | |
4359 return (not_first_ch) ? p : NULL; | |
4360 } | |
4361 | |
4362 | |
4363 // Take pointer to a string. Skip over the longest part of the string that could | |
4364 // be taken as a field signature. Allow "void" if void_ok. | |
4365 // Return a pointer to just past the signature. | |
4366 // Return NULL if no legal signature is found. | |
4367 char* ClassFileParser::skip_over_field_signature(char* signature, | |
4368 bool void_ok, | |
4369 unsigned int length, | |
4370 TRAPS) { | |
4371 unsigned int array_dim = 0; | |
4372 while (length > 0) { | |
4373 switch (signature[0]) { | |
4374 case JVM_SIGNATURE_VOID: if (!void_ok) { return NULL; } | |
4375 case JVM_SIGNATURE_BOOLEAN: | |
4376 case JVM_SIGNATURE_BYTE: | |
4377 case JVM_SIGNATURE_CHAR: | |
4378 case JVM_SIGNATURE_SHORT: | |
4379 case JVM_SIGNATURE_INT: | |
4380 case JVM_SIGNATURE_FLOAT: | |
4381 case JVM_SIGNATURE_LONG: | |
4382 case JVM_SIGNATURE_DOUBLE: | |
4383 return signature + 1; | |
4384 case JVM_SIGNATURE_CLASS: { | |
4385 if (_major_version < JAVA_1_5_VERSION) { | |
4386 // Skip over the class name if one is there | |
4387 char* p = skip_over_field_name(signature + 1, true, --length); | |
4388 | |
4389 // The next character better be a semicolon | |
4390 if (p && (p - signature) > 1 && p[0] == ';') { | |
4391 return p + 1; | |
4392 } | |
4393 } else { | |
4394 // 4900761: For class version > 48, any unicode is allowed in class name. | |
4395 length--; | |
4396 signature++; | |
4397 while (length > 0 && signature[0] != ';') { | |
4398 if (signature[0] == '.') { | |
4399 classfile_parse_error("Class name contains illegal character '.' in descriptor in class file %s", CHECK_0); | |
4400 } | |
4401 length--; | |
4402 signature++; | |
4403 } | |
4404 if (signature[0] == ';') { return signature + 1; } | |
4405 } | |
4406 | |
4407 return NULL; | |
4408 } | |
4409 case JVM_SIGNATURE_ARRAY: | |
4410 array_dim++; | |
4411 if (array_dim > 255) { | |
4412 // 4277370: array descriptor is valid only if it represents 255 or fewer dimensions. | |
4413 classfile_parse_error("Array type descriptor has more than 255 dimensions in class file %s", CHECK_0); | |
4414 } | |
4415 // The rest of what's there better be a legal signature | |
4416 signature++; | |
4417 length--; | |
4418 void_ok = false; | |
4419 break; | |
4420 | |
4421 default: | |
4422 return NULL; | |
4423 } | |
4424 } | |
4425 return NULL; | |
4426 } |