Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.hpp @ 2129:8f8dfba37802
6994753: Implement optional hook to a Java method at VM startup.
Reviewed-by: mchung, acorn
author | kevinw |
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date | Wed, 12 Jan 2011 15:44:16 +0000 |
parents | dad31fc330cd |
children | 3582bf76420e |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |
26 #define SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP | |
27 | |
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 | |
0 | 35 // Parser for for .class files |
36 // | |
37 // The bytes describing the class file structure is read from a Stream object | |
38 | |
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; | |
710 | 46 KlassHandle _host_klass; |
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47 GrowableArray<Handle>* _cp_patches; // overrides for CP entries |
0 | 48 |
49 bool _has_finalizer; | |
50 bool _has_empty_finalizer; | |
51 bool _has_vanilla_constructor; | |
52 | |
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53 int _max_bootstrap_specifier_index; |
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54 |
0 | 55 enum { fixed_buffer_size = 128 }; |
56 u_char linenumbertable_buffer[fixed_buffer_size]; | |
57 | |
58 ClassFileStream* _stream; // Actual input stream | |
59 | |
60 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names | |
61 | |
62 // Accessors | |
63 ClassFileStream* stream() { return _stream; } | |
64 void set_stream(ClassFileStream* st) { _stream = st; } | |
65 | |
66 // Constant pool parsing | |
67 void parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS); | |
68 | |
69 constantPoolHandle parse_constant_pool(TRAPS); | |
70 | |
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); | |
78 | |
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); | |
89 | |
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); | |
122 | |
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); | |
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132 void parse_classfile_bootstrap_methods_attribute(constantPoolHandle cp, instanceKlassHandle k, u4 attribute_length, TRAPS); |
0 | 133 |
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); | |
139 | |
140 // Final setup | |
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141 unsigned int compute_oop_map_count(instanceKlassHandle super, |
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142 unsigned int nonstatic_oop_count, |
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143 int first_nonstatic_oop_offset); |
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144 void fill_oop_maps(instanceKlassHandle k, |
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145 unsigned int nonstatic_oop_map_count, |
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146 int* nonstatic_oop_offsets, |
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147 unsigned int* nonstatic_oop_counts); |
0 | 148 void set_precomputed_flags(instanceKlassHandle k); |
149 objArrayHandle compute_transitive_interfaces(instanceKlassHandle super, | |
150 objArrayHandle local_ifs, TRAPS); | |
151 | |
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); | |
710 | 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, | |
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167 typeArrayHandle fields, |
710 | 168 FieldAllocationCount *fac_ptr, TRAPS); |
0 | 169 |
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 } | |
178 | |
179 inline void assert_property(bool b, const char* msg, TRAPS) { | |
180 #ifdef ASSERT | |
181 if (!b) { fatal(msg); } | |
182 #endif | |
183 } | |
184 | |
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 } | |
192 | |
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 } | |
200 | |
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 } | |
210 | |
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211 void throwIllegalSignature( |
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212 const char* type, symbolHandle name, symbolHandle sig, TRAPS); |
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213 |
0 | 214 bool is_supported_version(u2 major, u2 minor); |
215 bool has_illegal_visibility(jint flags); | |
216 | |
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); | |
230 | |
710 | 231 bool is_anonymous() { |
232 assert(AnonymousClasses || _host_klass.is_null(), ""); | |
233 return _host_klass.not_null(); | |
234 } | |
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235 bool has_cp_patch_at(int index) { |
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236 assert(AnonymousClasses, ""); |
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237 assert(index >= 0, "oob"); |
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238 return (_cp_patches != NULL |
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239 && index < _cp_patches->length() |
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240 && _cp_patches->adr_at(index)->not_null()); |
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241 } |
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242 Handle cp_patch_at(int index) { |
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243 assert(has_cp_patch_at(index), "oob"); |
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244 return _cp_patches->at(index); |
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245 } |
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246 Handle clear_cp_patch_at(int index) { |
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247 Handle patch = cp_patch_at(index); |
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248 _cp_patches->at_put(index, Handle()); |
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249 assert(!has_cp_patch_at(index), ""); |
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250 return patch; |
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251 } |
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252 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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253 |
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254 // Wrapper for constantTag.is_klass_[or_]reference. |
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255 // In older versions of the VM, klassOops cannot sneak into early phases of |
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256 // constant pool construction, but in later versions they can. |
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257 // %%% Let's phase out the old is_klass_reference. |
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258 bool is_klass_reference(constantPoolHandle cp, int index) { |
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259 return ((LinkWellKnownClasses || AnonymousClasses) |
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260 ? cp->tag_at(index).is_klass_or_reference() |
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261 : cp->tag_at(index).is_klass_reference()); |
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262 } |
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263 |
0 | 264 public: |
265 // Constructor | |
266 ClassFileParser(ClassFileStream* st) { set_stream(st); } | |
267 | |
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, | |
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279 bool verify, |
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280 TRAPS) { |
710 | 281 KlassHandle no_host_klass; |
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282 return parseClassFile(name, class_loader, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD); |
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283 } |
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284 instanceKlassHandle parseClassFile(symbolHandle name, |
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285 Handle class_loader, |
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286 Handle protection_domain, |
710 | 287 KlassHandle host_klass, |
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288 GrowableArray<Handle>* cp_patches, |
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289 symbolHandle& parsed_name, |
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290 bool verify, |
0 | 291 TRAPS); |
292 | |
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 }; | |
1972 | 299 |
300 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |