Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.hpp @ 939:9eebd3ac74cf
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Reviewed-by: jmasa, iveresov
| author | jcoomes |
|---|---|
| date | Thu, 13 Aug 2009 16:22:45 -0700 |
| parents | b37c246bf7ce |
| children | 26b774d693aa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 710 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // Parser for for .class files | |
| 26 // | |
| 27 // The bytes describing the class file structure is read from a Stream object | |
| 28 | |
| 29 class ClassFileParser VALUE_OBJ_CLASS_SPEC { | |
| 30 private: | |
| 31 bool _need_verify; | |
| 32 bool _relax_verify; | |
| 33 u2 _major_version; | |
| 34 u2 _minor_version; | |
| 35 symbolHandle _class_name; | |
| 710 | 36 KlassHandle _host_klass; |
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37 GrowableArray<Handle>* _cp_patches; // overrides for CP entries |
| 0 | 38 |
| 39 bool _has_finalizer; | |
| 40 bool _has_empty_finalizer; | |
| 41 bool _has_vanilla_constructor; | |
| 42 | |
| 43 enum { fixed_buffer_size = 128 }; | |
| 44 u_char linenumbertable_buffer[fixed_buffer_size]; | |
| 45 | |
| 46 ClassFileStream* _stream; // Actual input stream | |
| 47 | |
| 48 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names | |
| 49 | |
| 50 // Accessors | |
| 51 ClassFileStream* stream() { return _stream; } | |
| 52 void set_stream(ClassFileStream* st) { _stream = st; } | |
| 53 | |
| 54 // Constant pool parsing | |
| 55 void parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS); | |
| 56 | |
| 57 constantPoolHandle parse_constant_pool(TRAPS); | |
| 58 | |
| 59 // Interface parsing | |
| 60 objArrayHandle parse_interfaces(constantPoolHandle cp, | |
| 61 int length, | |
| 62 Handle class_loader, | |
| 63 Handle protection_domain, | |
| 64 symbolHandle class_name, | |
| 65 TRAPS); | |
| 66 | |
| 67 // Field parsing | |
| 68 void parse_field_attributes(constantPoolHandle cp, u2 attributes_count, | |
| 69 bool is_static, u2 signature_index, | |
| 70 u2* constantvalue_index_addr, | |
| 71 bool* is_synthetic_addr, | |
| 72 u2* generic_signature_index_addr, | |
| 73 typeArrayHandle* field_annotations, TRAPS); | |
| 74 typeArrayHandle parse_fields(constantPoolHandle cp, bool is_interface, | |
| 75 struct FieldAllocationCount *fac, | |
| 76 objArrayHandle* fields_annotations, TRAPS); | |
| 77 | |
| 78 // Method parsing | |
| 79 methodHandle parse_method(constantPoolHandle cp, bool is_interface, | |
| 80 AccessFlags* promoted_flags, | |
| 81 typeArrayHandle* method_annotations, | |
| 82 typeArrayHandle* method_parameter_annotations, | |
| 83 typeArrayHandle* method_default_annotations, | |
| 84 TRAPS); | |
| 85 objArrayHandle parse_methods (constantPoolHandle cp, bool is_interface, | |
| 86 AccessFlags* promoted_flags, | |
| 87 bool* has_final_method, | |
| 88 objArrayOop* methods_annotations_oop, | |
| 89 objArrayOop* methods_parameter_annotations_oop, | |
| 90 objArrayOop* methods_default_annotations_oop, | |
| 91 TRAPS); | |
| 92 typeArrayHandle sort_methods (objArrayHandle methods, | |
| 93 objArrayHandle methods_annotations, | |
| 94 objArrayHandle methods_parameter_annotations, | |
| 95 objArrayHandle methods_default_annotations, | |
| 96 TRAPS); | |
| 97 typeArrayHandle parse_exception_table(u4 code_length, u4 exception_table_length, | |
| 98 constantPoolHandle cp, TRAPS); | |
| 99 void parse_linenumber_table( | |
| 100 u4 code_attribute_length, u4 code_length, | |
| 101 CompressedLineNumberWriteStream** write_stream, TRAPS); | |
| 102 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, | |
| 103 constantPoolHandle cp, u2* localvariable_table_length, | |
| 104 bool isLVTT, TRAPS); | |
| 105 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, | |
| 106 constantPoolHandle cp, TRAPS); | |
| 107 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
| 108 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS); | |
| 109 typeArrayOop parse_stackmap_table(u4 code_attribute_length, TRAPS); | |
| 110 | |
| 111 // Classfile attribute parsing | |
| 112 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS); | |
| 113 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, | |
| 114 instanceKlassHandle k, int length, TRAPS); | |
| 115 u2 parse_classfile_inner_classes_attribute(constantPoolHandle cp, | |
| 116 instanceKlassHandle k, TRAPS); | |
| 117 void parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS); | |
| 118 void parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS); | |
| 119 void parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS); | |
| 120 | |
| 121 // Annotations handling | |
| 122 typeArrayHandle assemble_annotations(u1* runtime_visible_annotations, | |
| 123 int runtime_visible_annotations_length, | |
| 124 u1* runtime_invisible_annotations, | |
| 125 int runtime_invisible_annotations_length, TRAPS); | |
| 126 | |
| 127 // Final setup | |
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128 unsigned int compute_oop_map_count(instanceKlassHandle super, |
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129 unsigned int nonstatic_oop_count, |
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130 int first_nonstatic_oop_offset); |
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131 void fill_oop_maps(instanceKlassHandle k, |
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132 unsigned int nonstatic_oop_map_count, |
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133 int* nonstatic_oop_offsets, |
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134 unsigned int* nonstatic_oop_counts); |
| 0 | 135 void set_precomputed_flags(instanceKlassHandle k); |
| 136 objArrayHandle compute_transitive_interfaces(instanceKlassHandle super, | |
| 137 objArrayHandle local_ifs, TRAPS); | |
| 138 | |
| 139 // Special handling for certain classes. | |
| 140 // Add the "discovered" field to java.lang.ref.Reference if | |
| 141 // it does not exist. | |
| 142 void java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr, | |
| 143 constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS); | |
| 144 // Adjust the field allocation counts for java.lang.Class to add | |
| 145 // fake fields. | |
| 146 void java_lang_Class_fix_pre(objArrayHandle* methods_ptr, | |
| 147 FieldAllocationCount *fac_ptr, TRAPS); | |
| 148 // Adjust the next_nonstatic_oop_offset to place the fake fields | |
| 149 // before any Java fields. | |
| 150 void java_lang_Class_fix_post(int* next_nonstatic_oop_offset); | |
| 710 | 151 // Adjust the field allocation counts for java.dyn.MethodHandle to add |
| 152 // a fake address (void*) field. | |
| 153 void java_dyn_MethodHandle_fix_pre(constantPoolHandle cp, | |
| 154 typeArrayHandle* fields_ptr, | |
| 155 FieldAllocationCount *fac_ptr, TRAPS); | |
| 0 | 156 |
| 157 // Format checker methods | |
| 158 void classfile_parse_error(const char* msg, TRAPS); | |
| 159 void classfile_parse_error(const char* msg, int index, TRAPS); | |
| 160 void classfile_parse_error(const char* msg, const char *name, TRAPS); | |
| 161 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); | |
| 162 inline void guarantee_property(bool b, const char* msg, TRAPS) { | |
| 163 if (!b) { classfile_parse_error(msg, CHECK); } | |
| 164 } | |
| 165 | |
| 166 inline void assert_property(bool b, const char* msg, TRAPS) { | |
| 167 #ifdef ASSERT | |
| 168 if (!b) { fatal(msg); } | |
| 169 #endif | |
| 170 } | |
| 171 | |
| 172 inline void check_property(bool property, const char* msg, int index, TRAPS) { | |
| 173 if (_need_verify) { | |
| 174 guarantee_property(property, msg, index, CHECK); | |
| 175 } else { | |
| 176 assert_property(property, msg, CHECK); | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 inline void check_property(bool property, const char* msg, TRAPS) { | |
| 181 if (_need_verify) { | |
| 182 guarantee_property(property, msg, CHECK); | |
| 183 } else { | |
| 184 assert_property(property, msg, CHECK); | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { | |
| 189 if (!b) { classfile_parse_error(msg, index, CHECK); } | |
| 190 } | |
| 191 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { | |
| 192 if (!b) { classfile_parse_error(msg, name, CHECK); } | |
| 193 } | |
| 194 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { | |
| 195 if (!b) { classfile_parse_error(msg, index, name, CHECK); } | |
| 196 } | |
| 197 | |
| 198 bool is_supported_version(u2 major, u2 minor); | |
| 199 bool has_illegal_visibility(jint flags); | |
| 200 | |
| 201 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS); | |
| 202 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); | |
| 203 void verify_legal_class_name(symbolHandle name, TRAPS); | |
| 204 void verify_legal_field_name(symbolHandle name, TRAPS); | |
| 205 void verify_legal_method_name(symbolHandle name, TRAPS); | |
| 206 void verify_legal_field_signature(symbolHandle fieldname, symbolHandle signature, TRAPS); | |
| 207 int verify_legal_method_signature(symbolHandle methodname, symbolHandle signature, TRAPS); | |
| 208 void verify_legal_class_modifiers(jint flags, TRAPS); | |
| 209 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); | |
| 210 void verify_legal_method_modifiers(jint flags, bool is_interface, symbolHandle name, TRAPS); | |
| 211 bool verify_unqualified_name(char* name, unsigned int length, int type); | |
| 212 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); | |
| 213 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); | |
| 214 | |
| 710 | 215 bool is_anonymous() { |
| 216 assert(AnonymousClasses || _host_klass.is_null(), ""); | |
| 217 return _host_klass.not_null(); | |
| 218 } | |
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219 bool has_cp_patch_at(int index) { |
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220 assert(AnonymousClasses, ""); |
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221 assert(index >= 0, "oob"); |
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222 return (_cp_patches != NULL |
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223 && index < _cp_patches->length() |
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224 && _cp_patches->adr_at(index)->not_null()); |
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225 } |
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226 Handle cp_patch_at(int index) { |
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227 assert(has_cp_patch_at(index), "oob"); |
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228 return _cp_patches->at(index); |
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229 } |
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230 Handle clear_cp_patch_at(int index) { |
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231 Handle patch = cp_patch_at(index); |
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232 _cp_patches->at_put(index, Handle()); |
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233 assert(!has_cp_patch_at(index), ""); |
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234 return patch; |
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235 } |
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236 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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237 |
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238 // Wrapper for constantTag.is_klass_[or_]reference. |
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239 // In older versions of the VM, klassOops cannot sneak into early phases of |
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240 // constant pool construction, but in later versions they can. |
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241 // %%% Let's phase out the old is_klass_reference. |
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242 bool is_klass_reference(constantPoolHandle cp, int index) { |
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243 return ((LinkWellKnownClasses || AnonymousClasses) |
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244 ? cp->tag_at(index).is_klass_or_reference() |
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245 : cp->tag_at(index).is_klass_reference()); |
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246 } |
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247 |
| 0 | 248 public: |
| 249 // Constructor | |
| 250 ClassFileParser(ClassFileStream* st) { set_stream(st); } | |
| 251 | |
| 252 // Parse .class file and return new klassOop. The klassOop is not hooked up | |
| 253 // to the system dictionary or any other structures, so a .class file can | |
| 254 // be loaded several times if desired. | |
| 255 // The system dictionary hookup is done by the caller. | |
| 256 // | |
| 257 // "parsed_name" is updated by this method, and is the name found | |
| 258 // while parsing the stream. | |
| 259 instanceKlassHandle parseClassFile(symbolHandle name, | |
| 260 Handle class_loader, | |
| 261 Handle protection_domain, | |
| 262 symbolHandle& parsed_name, | |
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263 TRAPS) { |
| 710 | 264 KlassHandle no_host_klass; |
| 265 return parseClassFile(name, class_loader, protection_domain, no_host_klass, NULL, parsed_name, THREAD); | |
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266 } |
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267 instanceKlassHandle parseClassFile(symbolHandle name, |
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268 Handle class_loader, |
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269 Handle protection_domain, |
| 710 | 270 KlassHandle host_klass, |
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271 GrowableArray<Handle>* cp_patches, |
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272 symbolHandle& parsed_name, |
| 0 | 273 TRAPS); |
| 274 | |
| 275 // Verifier checks | |
| 276 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); | |
| 277 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); | |
| 278 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); | |
| 279 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); | |
| 280 }; |