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src/share/vm/classfile/classFileParser.hpp@0ede345ec7c9
src/share/vm/classfile/classFileParser.hpp
Wed, 13 Mar 2013 15:15:56 -0400
- author
- coleenp
- date
- Wed, 13 Mar 2013 15:15:56 -0400
- changeset 4718
- 0ede345ec7c9
- parent 4572
- 927a311d00f9
- child 4719
- c8b31b461e1a
- permissions
- -rw-r--r--
8009829: CDS: JDK JPRT test fails crash in Symbol::equals()
Summary: -Xshare:dump was creating a Symbol in C_heap. There's an assert there that jdk jprt wasn't hitting because it was only done in product
Reviewed-by: dholmes, hseigel, iklam
1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
26 #define SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
28 #include "classfile/classFileStream.hpp"
29 #include "memory/resourceArea.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "oops/typeArrayOop.hpp"
32 #include "runtime/handles.inline.hpp"
33 #include "utilities/accessFlags.hpp"
34 #include "classfile/symbolTable.hpp"
36 class FieldAllocationCount;
39 // Parser for for .class files
40 //
41 // The bytes describing the class file structure is read from a Stream object
43 class ClassFileParser VALUE_OBJ_CLASS_SPEC {
44 private:
45 bool _need_verify;
46 bool _relax_verify;
47 u2 _major_version;
48 u2 _minor_version;
49 Symbol* _class_name;
50 KlassHandle _host_klass;
51 GrowableArray<Handle>* _cp_patches; // overrides for CP entries
53 // precomputed flags
54 bool _has_finalizer;
55 bool _has_empty_finalizer;
56 bool _has_vanilla_constructor;
57 int _max_bootstrap_specifier_index; // detects BSS values
59 // class attributes parsed before the instance klass is created:
60 bool _synthetic_flag;
61 Symbol* _sourcefile;
62 Symbol* _generic_signature;
63 char* _sde_buffer;
64 int _sde_length;
65 Array<u2>* _inner_classes;
66 AnnotationArray* _annotations;
67 AnnotationArray* _type_annotations;
69 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; }
70 void set_class_sourcefile(Symbol* x) { _sourcefile = x; }
71 void set_class_generic_signature(Symbol* x) { _generic_signature = x; }
72 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; }
73 void set_class_inner_classes(Array<u2>* x) { _inner_classes = x; }
74 void set_class_annotations(AnnotationArray* x) { _annotations = x; }
75 void set_class_type_annotations(AnnotationArray* x) { _type_annotations = x; }
76 void init_parsed_class_attributes() {
77 _synthetic_flag = false;
78 _sourcefile = NULL;
79 _generic_signature = NULL;
80 _sde_buffer = NULL;
81 _sde_length = 0;
82 _annotations = _type_annotations = NULL;
83 // initialize the other flags too:
84 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
85 _max_bootstrap_specifier_index = -1;
86 }
87 void apply_parsed_class_attributes(instanceKlassHandle k); // update k
89 class AnnotationCollector {
90 public:
91 enum Location { _in_field, _in_method, _in_class };
92 enum ID {
93 _unknown = 0,
94 _method_ForceInline,
95 _method_DontInline,
96 _method_LambdaForm_Compiled,
97 _method_LambdaForm_Hidden,
98 _sun_misc_Contended,
99 _annotation_LIMIT
100 };
101 const Location _location;
102 int _annotations_present;
103 u2 _contended_group;
105 AnnotationCollector(Location location)
106 : _location(location), _annotations_present(0)
107 {
108 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, "");
109 }
110 // If this annotation name has an ID, report it (or _none).
111 ID annotation_index(ClassLoaderData* loader_data, Symbol* name);
112 // Set the annotation name:
113 void set_annotation(ID id) {
114 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
115 _annotations_present |= nth_bit((int)id);
116 }
117 // Report if the annotation is present.
118 bool has_any_annotations() { return _annotations_present != 0; }
119 bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; }
121 void set_contended_group(u2 group) { _contended_group = group; }
122 u2 contended_group() { return _contended_group; }
124 void set_contended(bool contended) { set_annotation(_sun_misc_Contended); }
125 bool is_contended() { return has_annotation(_sun_misc_Contended); }
126 };
127 class FieldAnnotationCollector: public AnnotationCollector {
128 public:
129 FieldAnnotationCollector() : AnnotationCollector(_in_field) { }
130 void apply_to(FieldInfo* f);
131 };
132 class MethodAnnotationCollector: public AnnotationCollector {
133 public:
134 MethodAnnotationCollector() : AnnotationCollector(_in_method) { }
135 void apply_to(methodHandle m);
136 };
137 class ClassAnnotationCollector: public AnnotationCollector {
138 public:
139 ClassAnnotationCollector() : AnnotationCollector(_in_class) { }
140 void apply_to(instanceKlassHandle k);
141 };
143 enum { fixed_buffer_size = 128 };
144 u_char linenumbertable_buffer[fixed_buffer_size];
146 ClassFileStream* _stream; // Actual input stream
148 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
150 // Accessors
151 ClassFileStream* stream() { return _stream; }
152 void set_stream(ClassFileStream* st) { _stream = st; }
154 // Constant pool parsing
155 void parse_constant_pool_entries(ClassLoaderData* loader_data,
156 constantPoolHandle cp, int length, TRAPS);
158 constantPoolHandle parse_constant_pool(ClassLoaderData* loader_data, TRAPS);
160 // Interface parsing
161 Array<Klass*>* parse_interfaces(constantPoolHandle cp,
162 int length,
163 ClassLoaderData* loader_data,
164 Handle protection_domain,
165 Symbol* class_name,
166 bool* has_default_methods,
167 TRAPS);
168 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS);
170 // Field parsing
171 void parse_field_attributes(ClassLoaderData* loader_data,
172 constantPoolHandle cp, u2 attributes_count,
173 bool is_static, u2 signature_index,
174 u2* constantvalue_index_addr,
175 bool* is_synthetic_addr,
176 u2* generic_signature_index_addr,
177 AnnotationArray** field_annotations,
178 AnnotationArray** field_type_annotations,
179 FieldAnnotationCollector* parsed_annotations,
180 TRAPS);
181 Array<u2>* parse_fields(ClassLoaderData* loader_data,
182 Symbol* class_name,
183 constantPoolHandle cp, bool is_interface,
184 FieldAllocationCount *fac,
185 Array<AnnotationArray*>** fields_annotations,
186 Array<AnnotationArray*>** fields_type_annotations,
187 u2* java_fields_count_ptr, TRAPS);
189 void print_field_layout(Symbol* name,
190 Array<u2>* fields,
191 constantPoolHandle cp,
192 int instance_size,
193 int instance_fields_start,
194 int instance_fields_end,
195 int static_fields_end);
197 // Method parsing
198 methodHandle parse_method(ClassLoaderData* loader_data,
199 constantPoolHandle cp,
200 bool is_interface,
201 AccessFlags* promoted_flags,
202 TRAPS);
203 Array<Method*>* parse_methods(ClassLoaderData* loader_data,
204 constantPoolHandle cp,
205 bool is_interface,
206 AccessFlags* promoted_flags,
207 bool* has_final_method,
208 bool* has_default_method,
209 TRAPS);
210 Array<int>* sort_methods(ClassLoaderData* loader_data,
211 Array<Method*>* methods,
212 TRAPS);
213 u2* parse_exception_table(ClassLoaderData* loader_data,
214 u4 code_length, u4 exception_table_length,
215 constantPoolHandle cp, TRAPS);
216 void parse_linenumber_table(
217 u4 code_attribute_length, u4 code_length,
218 CompressedLineNumberWriteStream** write_stream, TRAPS);
219 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
220 constantPoolHandle cp, u2* localvariable_table_length,
221 bool isLVTT, TRAPS);
222 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
223 constantPoolHandle cp, TRAPS);
224 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
225 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS);
226 Array<u1>* parse_stackmap_table(ClassLoaderData* loader_data, u4 code_attribute_length, TRAPS);
228 // Classfile attribute parsing
229 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS);
230 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
231 int length, TRAPS);
232 u2 parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data,
233 u1* inner_classes_attribute_start,
234 bool parsed_enclosingmethod_attribute,
235 u2 enclosing_method_class_index,
236 u2 enclosing_method_method_index,
237 constantPoolHandle cp,
238 TRAPS);
239 void parse_classfile_attributes(ClassLoaderData* loader_data,
240 constantPoolHandle cp,
241 ClassAnnotationCollector* parsed_annotations,
242 TRAPS);
243 void parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS);
244 void parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS);
245 void parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, constantPoolHandle cp, u4 attribute_length, TRAPS);
247 // Annotations handling
248 AnnotationArray* assemble_annotations(ClassLoaderData* loader_data,
249 u1* runtime_visible_annotations,
250 int runtime_visible_annotations_length,
251 u1* runtime_invisible_annotations,
252 int runtime_invisible_annotations_length, TRAPS);
253 int skip_annotation(u1* buffer, int limit, int index);
254 int skip_annotation_value(u1* buffer, int limit, int index);
255 void parse_annotations(ClassLoaderData* loader_data,
256 u1* buffer, int limit, constantPoolHandle cp,
257 /* Results (currently, only one result is supported): */
258 AnnotationCollector* result,
259 TRAPS);
261 // Final setup
262 unsigned int compute_oop_map_count(instanceKlassHandle super,
263 unsigned int nonstatic_oop_count,
264 int first_nonstatic_oop_offset);
265 void fill_oop_maps(instanceKlassHandle k,
266 unsigned int nonstatic_oop_map_count,
267 int* nonstatic_oop_offsets,
268 unsigned int* nonstatic_oop_counts);
269 void set_precomputed_flags(instanceKlassHandle k);
270 Array<Klass*>* compute_transitive_interfaces(ClassLoaderData* loader_data,
271 instanceKlassHandle super,
272 Array<Klass*>* local_ifs, TRAPS);
274 // Format checker methods
275 void classfile_parse_error(const char* msg, TRAPS);
276 void classfile_parse_error(const char* msg, int index, TRAPS);
277 void classfile_parse_error(const char* msg, const char *name, TRAPS);
278 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
279 inline void guarantee_property(bool b, const char* msg, TRAPS) {
280 if (!b) { classfile_parse_error(msg, CHECK); }
281 }
283 inline void assert_property(bool b, const char* msg, TRAPS) {
284 #ifdef ASSERT
285 if (!b) { fatal(msg); }
286 #endif
287 }
289 inline void check_property(bool property, const char* msg, int index, TRAPS) {
290 if (_need_verify) {
291 guarantee_property(property, msg, index, CHECK);
292 } else {
293 assert_property(property, msg, CHECK);
294 }
295 }
297 inline void check_property(bool property, const char* msg, TRAPS) {
298 if (_need_verify) {
299 guarantee_property(property, msg, CHECK);
300 } else {
301 assert_property(property, msg, CHECK);
302 }
303 }
305 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
306 if (!b) { classfile_parse_error(msg, index, CHECK); }
307 }
308 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
309 if (!b) { classfile_parse_error(msg, name, CHECK); }
310 }
311 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
312 if (!b) { classfile_parse_error(msg, index, name, CHECK); }
313 }
315 void throwIllegalSignature(
316 const char* type, Symbol* name, Symbol* sig, TRAPS);
318 bool is_supported_version(u2 major, u2 minor);
319 bool has_illegal_visibility(jint flags);
321 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS);
322 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
323 void verify_legal_class_name(Symbol* name, TRAPS);
324 void verify_legal_field_name(Symbol* name, TRAPS);
325 void verify_legal_method_name(Symbol* name, TRAPS);
326 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS);
327 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS);
328 void verify_legal_class_modifiers(jint flags, TRAPS);
329 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
330 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS);
331 bool verify_unqualified_name(char* name, unsigned int length, int type);
332 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
333 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
335 bool is_anonymous() {
336 assert(EnableInvokeDynamic || _host_klass.is_null(), "");
337 return _host_klass.not_null();
338 }
339 bool has_cp_patch_at(int index) {
340 assert(EnableInvokeDynamic, "");
341 assert(index >= 0, "oob");
342 return (_cp_patches != NULL
343 && index < _cp_patches->length()
344 && _cp_patches->adr_at(index)->not_null());
345 }
346 Handle cp_patch_at(int index) {
347 assert(has_cp_patch_at(index), "oob");
348 return _cp_patches->at(index);
349 }
350 Handle clear_cp_patch_at(int index) {
351 Handle patch = cp_patch_at(index);
352 _cp_patches->at_put(index, Handle());
353 assert(!has_cp_patch_at(index), "");
354 return patch;
355 }
356 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
358 // Wrapper for constantTag.is_klass_[or_]reference.
359 // In older versions of the VM, Klass*s cannot sneak into early phases of
360 // constant pool construction, but in later versions they can.
361 // %%% Let's phase out the old is_klass_reference.
362 bool is_klass_reference(constantPoolHandle cp, int index) {
363 return (EnableInvokeDynamic
364 ? cp->tag_at(index).is_klass_or_reference()
365 : cp->tag_at(index).is_klass_reference());
366 }
368 void copy_localvariable_table(ConstMethod* cm, int lvt_cnt,
369 u2* localvariable_table_length,
370 u2** localvariable_table_start,
371 int lvtt_cnt,
372 u2* localvariable_type_table_length,
373 u2** localvariable_type_table_start,
374 TRAPS);
376 void copy_method_annotations(ClassLoaderData* loader_data,
377 ConstMethod* cm,
378 u1* runtime_visible_annotations,
379 int runtime_visible_annotations_length,
380 u1* runtime_invisible_annotations,
381 int runtime_invisible_annotations_length,
382 u1* runtime_visible_parameter_annotations,
383 int runtime_visible_parameter_annotations_length,
384 u1* runtime_invisible_parameter_annotations,
385 int runtime_invisible_parameter_annotations_length,
386 u1* runtime_visible_type_annotations,
387 int runtime_visible_type_annotations_length,
388 u1* runtime_invisible_type_annotations,
389 int runtime_invisible_type_annotations_length,
390 u1* annotation_default,
391 int annotation_default_length,
392 TRAPS);
394 public:
395 // Constructor
396 ClassFileParser(ClassFileStream* st) { set_stream(st); }
398 // Parse .class file and return new Klass*. The Klass* is not hooked up
399 // to the system dictionary or any other structures, so a .class file can
400 // be loaded several times if desired.
401 // The system dictionary hookup is done by the caller.
402 //
403 // "parsed_name" is updated by this method, and is the name found
404 // while parsing the stream.
405 instanceKlassHandle parseClassFile(Symbol* name,
406 ClassLoaderData* loader_data,
407 Handle protection_domain,
408 TempNewSymbol& parsed_name,
409 bool verify,
410 TRAPS) {
411 KlassHandle no_host_klass;
412 return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
413 }
414 instanceKlassHandle parseClassFile(Symbol* name,
415 ClassLoaderData* loader_data,
416 Handle protection_domain,
417 KlassHandle host_klass,
418 GrowableArray<Handle>* cp_patches,
419 TempNewSymbol& parsed_name,
420 bool verify,
421 TRAPS);
423 // Verifier checks
424 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
425 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
426 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
427 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
428 };
430 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
