Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/classfile/classFileParser.hpp@dad31fc330cd
src/share/vm/classfile/classFileParser.hpp
Fri, 03 Dec 2010 15:53:57 -0800
- author
- jrose
- date
- Fri, 03 Dec 2010 15:53:57 -0800
- changeset 2353
- dad31fc330cd
- parent 2314
- f95d63e2154a
- child 2497
- 3582bf76420e
- permissions
- -rw-r--r--
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
Reviewed-by: twisti
1 /*
2 * Copyright (c) 1997, 2010, 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"
35 // Parser for for .class files
36 //
37 // The bytes describing the class file structure is read from a Stream object
39 class ClassFileParser VALUE_OBJ_CLASS_SPEC {
40 private:
41 bool _need_verify;
42 bool _relax_verify;
43 u2 _major_version;
44 u2 _minor_version;
45 symbolHandle _class_name;
46 KlassHandle _host_klass;
47 GrowableArray<Handle>* _cp_patches; // overrides for CP entries
49 bool _has_finalizer;
50 bool _has_empty_finalizer;
51 bool _has_vanilla_constructor;
53 int _max_bootstrap_specifier_index;
55 enum { fixed_buffer_size = 128 };
56 u_char linenumbertable_buffer[fixed_buffer_size];
58 ClassFileStream* _stream; // Actual input stream
60 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
62 // Accessors
63 ClassFileStream* stream() { return _stream; }
64 void set_stream(ClassFileStream* st) { _stream = st; }
66 // Constant pool parsing
67 void parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS);
69 constantPoolHandle parse_constant_pool(TRAPS);
71 // Interface parsing
72 objArrayHandle parse_interfaces(constantPoolHandle cp,
73 int length,
74 Handle class_loader,
75 Handle protection_domain,
76 symbolHandle class_name,
77 TRAPS);
79 // Field parsing
80 void parse_field_attributes(constantPoolHandle cp, u2 attributes_count,
81 bool is_static, u2 signature_index,
82 u2* constantvalue_index_addr,
83 bool* is_synthetic_addr,
84 u2* generic_signature_index_addr,
85 typeArrayHandle* field_annotations, TRAPS);
86 typeArrayHandle parse_fields(constantPoolHandle cp, bool is_interface,
87 struct FieldAllocationCount *fac,
88 objArrayHandle* fields_annotations, TRAPS);
90 // Method parsing
91 methodHandle parse_method(constantPoolHandle cp, bool is_interface,
92 AccessFlags* promoted_flags,
93 typeArrayHandle* method_annotations,
94 typeArrayHandle* method_parameter_annotations,
95 typeArrayHandle* method_default_annotations,
96 TRAPS);
97 objArrayHandle parse_methods (constantPoolHandle cp, bool is_interface,
98 AccessFlags* promoted_flags,
99 bool* has_final_method,
100 objArrayOop* methods_annotations_oop,
101 objArrayOop* methods_parameter_annotations_oop,
102 objArrayOop* methods_default_annotations_oop,
103 TRAPS);
104 typeArrayHandle sort_methods (objArrayHandle methods,
105 objArrayHandle methods_annotations,
106 objArrayHandle methods_parameter_annotations,
107 objArrayHandle methods_default_annotations,
108 TRAPS);
109 typeArrayHandle parse_exception_table(u4 code_length, u4 exception_table_length,
110 constantPoolHandle cp, TRAPS);
111 void parse_linenumber_table(
112 u4 code_attribute_length, u4 code_length,
113 CompressedLineNumberWriteStream** write_stream, TRAPS);
114 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
115 constantPoolHandle cp, u2* localvariable_table_length,
116 bool isLVTT, TRAPS);
117 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
118 constantPoolHandle cp, TRAPS);
119 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
120 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS);
121 typeArrayOop parse_stackmap_table(u4 code_attribute_length, TRAPS);
123 // Classfile attribute parsing
124 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
125 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp,
126 instanceKlassHandle k, int length, TRAPS);
127 u2 parse_classfile_inner_classes_attribute(constantPoolHandle cp,
128 instanceKlassHandle k, TRAPS);
129 void parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
130 void parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
131 void parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS);
132 void parse_classfile_bootstrap_methods_attribute(constantPoolHandle cp, instanceKlassHandle k, u4 attribute_length, TRAPS);
134 // Annotations handling
135 typeArrayHandle assemble_annotations(u1* runtime_visible_annotations,
136 int runtime_visible_annotations_length,
137 u1* runtime_invisible_annotations,
138 int runtime_invisible_annotations_length, TRAPS);
140 // Final setup
141 unsigned int compute_oop_map_count(instanceKlassHandle super,
142 unsigned int nonstatic_oop_count,
143 int first_nonstatic_oop_offset);
144 void fill_oop_maps(instanceKlassHandle k,
145 unsigned int nonstatic_oop_map_count,
146 int* nonstatic_oop_offsets,
147 unsigned int* nonstatic_oop_counts);
148 void set_precomputed_flags(instanceKlassHandle k);
149 objArrayHandle compute_transitive_interfaces(instanceKlassHandle super,
150 objArrayHandle local_ifs, TRAPS);
152 // Special handling for certain classes.
153 // Add the "discovered" field to java.lang.ref.Reference if
154 // it does not exist.
155 void java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr,
156 constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS);
157 // Adjust the field allocation counts for java.lang.Class to add
158 // fake fields.
159 void java_lang_Class_fix_pre(objArrayHandle* methods_ptr,
160 FieldAllocationCount *fac_ptr, TRAPS);
161 // Adjust the next_nonstatic_oop_offset to place the fake fields
162 // before any Java fields.
163 void java_lang_Class_fix_post(int* next_nonstatic_oop_offset);
164 // Adjust the field allocation counts for java.dyn.MethodHandle to add
165 // a fake address (void*) field.
166 void java_dyn_MethodHandle_fix_pre(constantPoolHandle cp,
167 typeArrayHandle fields,
168 FieldAllocationCount *fac_ptr, TRAPS);
170 // Format checker methods
171 void classfile_parse_error(const char* msg, TRAPS);
172 void classfile_parse_error(const char* msg, int index, TRAPS);
173 void classfile_parse_error(const char* msg, const char *name, TRAPS);
174 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
175 inline void guarantee_property(bool b, const char* msg, TRAPS) {
176 if (!b) { classfile_parse_error(msg, CHECK); }
177 }
179 inline void assert_property(bool b, const char* msg, TRAPS) {
180 #ifdef ASSERT
181 if (!b) { fatal(msg); }
182 #endif
183 }
185 inline void check_property(bool property, const char* msg, int index, TRAPS) {
186 if (_need_verify) {
187 guarantee_property(property, msg, index, CHECK);
188 } else {
189 assert_property(property, msg, CHECK);
190 }
191 }
193 inline void check_property(bool property, const char* msg, TRAPS) {
194 if (_need_verify) {
195 guarantee_property(property, msg, CHECK);
196 } else {
197 assert_property(property, msg, CHECK);
198 }
199 }
201 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
202 if (!b) { classfile_parse_error(msg, index, CHECK); }
203 }
204 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
205 if (!b) { classfile_parse_error(msg, name, CHECK); }
206 }
207 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
208 if (!b) { classfile_parse_error(msg, index, name, CHECK); }
209 }
211 void throwIllegalSignature(
212 const char* type, symbolHandle name, symbolHandle sig, TRAPS);
214 bool is_supported_version(u2 major, u2 minor);
215 bool has_illegal_visibility(jint flags);
217 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS);
218 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
219 void verify_legal_class_name(symbolHandle name, TRAPS);
220 void verify_legal_field_name(symbolHandle name, TRAPS);
221 void verify_legal_method_name(symbolHandle name, TRAPS);
222 void verify_legal_field_signature(symbolHandle fieldname, symbolHandle signature, TRAPS);
223 int verify_legal_method_signature(symbolHandle methodname, symbolHandle signature, TRAPS);
224 void verify_legal_class_modifiers(jint flags, TRAPS);
225 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
226 void verify_legal_method_modifiers(jint flags, bool is_interface, symbolHandle name, TRAPS);
227 bool verify_unqualified_name(char* name, unsigned int length, int type);
228 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
229 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
231 bool is_anonymous() {
232 assert(AnonymousClasses || _host_klass.is_null(), "");
233 return _host_klass.not_null();
234 }
235 bool has_cp_patch_at(int index) {
236 assert(AnonymousClasses, "");
237 assert(index >= 0, "oob");
238 return (_cp_patches != NULL
239 && index < _cp_patches->length()
240 && _cp_patches->adr_at(index)->not_null());
241 }
242 Handle cp_patch_at(int index) {
243 assert(has_cp_patch_at(index), "oob");
244 return _cp_patches->at(index);
245 }
246 Handle clear_cp_patch_at(int index) {
247 Handle patch = cp_patch_at(index);
248 _cp_patches->at_put(index, Handle());
249 assert(!has_cp_patch_at(index), "");
250 return patch;
251 }
252 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
254 // Wrapper for constantTag.is_klass_[or_]reference.
255 // In older versions of the VM, klassOops cannot sneak into early phases of
256 // constant pool construction, but in later versions they can.
257 // %%% Let's phase out the old is_klass_reference.
258 bool is_klass_reference(constantPoolHandle cp, int index) {
259 return ((LinkWellKnownClasses || AnonymousClasses)
260 ? cp->tag_at(index).is_klass_or_reference()
261 : cp->tag_at(index).is_klass_reference());
262 }
264 public:
265 // Constructor
266 ClassFileParser(ClassFileStream* st) { set_stream(st); }
268 // Parse .class file and return new klassOop. The klassOop is not hooked up
269 // to the system dictionary or any other structures, so a .class file can
270 // be loaded several times if desired.
271 // The system dictionary hookup is done by the caller.
272 //
273 // "parsed_name" is updated by this method, and is the name found
274 // while parsing the stream.
275 instanceKlassHandle parseClassFile(symbolHandle name,
276 Handle class_loader,
277 Handle protection_domain,
278 symbolHandle& parsed_name,
279 bool verify,
280 TRAPS) {
281 KlassHandle no_host_klass;
282 return parseClassFile(name, class_loader, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
283 }
284 instanceKlassHandle parseClassFile(symbolHandle name,
285 Handle class_loader,
286 Handle protection_domain,
287 KlassHandle host_klass,
288 GrowableArray<Handle>* cp_patches,
289 symbolHandle& parsed_name,
290 bool verify,
291 TRAPS);
293 // Verifier checks
294 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
295 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
296 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
297 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
298 };
300 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
