Mercurial > hg > truffle
diff src/share/vm/classfile/classFileParser.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | a45484ea312d |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/classfile/classFileParser.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,228 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// Parser for for .class files +// +// The bytes describing the class file structure is read from a Stream object + +class ClassFileParser VALUE_OBJ_CLASS_SPEC { + private: + bool _need_verify; + bool _relax_verify; + u2 _major_version; + u2 _minor_version; + symbolHandle _class_name; + + bool _has_finalizer; + bool _has_empty_finalizer; + bool _has_vanilla_constructor; + + enum { fixed_buffer_size = 128 }; + u_char linenumbertable_buffer[fixed_buffer_size]; + + ClassFileStream* _stream; // Actual input stream + + enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names + + // Accessors + ClassFileStream* stream() { return _stream; } + void set_stream(ClassFileStream* st) { _stream = st; } + + // Constant pool parsing + void parse_constant_pool_entries(constantPoolHandle cp, int length, TRAPS); + + constantPoolHandle parse_constant_pool(TRAPS); + + // Interface parsing + objArrayHandle parse_interfaces(constantPoolHandle cp, + int length, + Handle class_loader, + Handle protection_domain, + PerfTraceTime* vmtimer, + symbolHandle class_name, + TRAPS); + + // Field parsing + void parse_field_attributes(constantPoolHandle cp, u2 attributes_count, + bool is_static, u2 signature_index, + u2* constantvalue_index_addr, + bool* is_synthetic_addr, + u2* generic_signature_index_addr, + typeArrayHandle* field_annotations, TRAPS); + typeArrayHandle parse_fields(constantPoolHandle cp, bool is_interface, + struct FieldAllocationCount *fac, + objArrayHandle* fields_annotations, TRAPS); + + // Method parsing + methodHandle parse_method(constantPoolHandle cp, bool is_interface, + AccessFlags* promoted_flags, + typeArrayHandle* method_annotations, + typeArrayHandle* method_parameter_annotations, + typeArrayHandle* method_default_annotations, + TRAPS); + objArrayHandle parse_methods (constantPoolHandle cp, bool is_interface, + AccessFlags* promoted_flags, + bool* has_final_method, + objArrayOop* methods_annotations_oop, + objArrayOop* methods_parameter_annotations_oop, + objArrayOop* methods_default_annotations_oop, + TRAPS); + typeArrayHandle sort_methods (objArrayHandle methods, + objArrayHandle methods_annotations, + objArrayHandle methods_parameter_annotations, + objArrayHandle methods_default_annotations, + TRAPS); + typeArrayHandle parse_exception_table(u4 code_length, u4 exception_table_length, + constantPoolHandle cp, TRAPS); + void parse_linenumber_table( + u4 code_attribute_length, u4 code_length, + CompressedLineNumberWriteStream** write_stream, TRAPS); + u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, + constantPoolHandle cp, u2* localvariable_table_length, + bool isLVTT, TRAPS); + u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, + constantPoolHandle cp, TRAPS); + void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, + u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS); + typeArrayOop parse_stackmap_table(u4 code_attribute_length, TRAPS); + + // Classfile attribute parsing + void parse_classfile_sourcefile_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS); + void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, + instanceKlassHandle k, int length, TRAPS); + u2 parse_classfile_inner_classes_attribute(constantPoolHandle cp, + instanceKlassHandle k, TRAPS); + void parse_classfile_attributes(constantPoolHandle cp, instanceKlassHandle k, TRAPS); + void parse_classfile_synthetic_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS); + void parse_classfile_signature_attribute(constantPoolHandle cp, instanceKlassHandle k, TRAPS); + + // Annotations handling + typeArrayHandle assemble_annotations(u1* runtime_visible_annotations, + int runtime_visible_annotations_length, + u1* runtime_invisible_annotations, + int runtime_invisible_annotations_length, TRAPS); + + // Final setup + int compute_oop_map_size(instanceKlassHandle super, int nonstatic_oop_count, + int first_nonstatic_oop_offset); + void fill_oop_maps(instanceKlassHandle k, int nonstatic_oop_map_count, + u2* nonstatic_oop_offsets, u2* nonstatic_oop_length); + void set_precomputed_flags(instanceKlassHandle k); + objArrayHandle compute_transitive_interfaces(instanceKlassHandle super, + objArrayHandle local_ifs, TRAPS); + + // Special handling for certain classes. + // Add the "discovered" field to java.lang.ref.Reference if + // it does not exist. + void java_lang_ref_Reference_fix_pre(typeArrayHandle* fields_ptr, + constantPoolHandle cp, FieldAllocationCount *fac_ptr, TRAPS); + // Adjust the field allocation counts for java.lang.Class to add + // fake fields. + void java_lang_Class_fix_pre(objArrayHandle* methods_ptr, + FieldAllocationCount *fac_ptr, TRAPS); + // Adjust the next_nonstatic_oop_offset to place the fake fields + // before any Java fields. + void java_lang_Class_fix_post(int* next_nonstatic_oop_offset); + + // Format checker methods + void classfile_parse_error(const char* msg, TRAPS); + void classfile_parse_error(const char* msg, int index, TRAPS); + void classfile_parse_error(const char* msg, const char *name, TRAPS); + void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); + inline void guarantee_property(bool b, const char* msg, TRAPS) { + if (!b) { classfile_parse_error(msg, CHECK); } + } + + inline void assert_property(bool b, const char* msg, TRAPS) { +#ifdef ASSERT + if (!b) { fatal(msg); } +#endif + } + + inline void check_property(bool property, const char* msg, int index, TRAPS) { + if (_need_verify) { + guarantee_property(property, msg, index, CHECK); + } else { + assert_property(property, msg, CHECK); + } + } + + inline void check_property(bool property, const char* msg, TRAPS) { + if (_need_verify) { + guarantee_property(property, msg, CHECK); + } else { + assert_property(property, msg, CHECK); + } + } + + inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { + if (!b) { classfile_parse_error(msg, index, CHECK); } + } + inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { + if (!b) { classfile_parse_error(msg, name, CHECK); } + } + inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { + if (!b) { classfile_parse_error(msg, index, name, CHECK); } + } + + bool is_supported_version(u2 major, u2 minor); + bool has_illegal_visibility(jint flags); + + void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS); + void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); + void verify_legal_class_name(symbolHandle name, TRAPS); + void verify_legal_field_name(symbolHandle name, TRAPS); + void verify_legal_method_name(symbolHandle name, TRAPS); + void verify_legal_field_signature(symbolHandle fieldname, symbolHandle signature, TRAPS); + int verify_legal_method_signature(symbolHandle methodname, symbolHandle signature, TRAPS); + void verify_legal_class_modifiers(jint flags, TRAPS); + void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); + void verify_legal_method_modifiers(jint flags, bool is_interface, symbolHandle name, TRAPS); + bool verify_unqualified_name(char* name, unsigned int length, int type); + char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); + char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); + + public: + // Constructor + ClassFileParser(ClassFileStream* st) { set_stream(st); } + + // Parse .class file and return new klassOop. The klassOop is not hooked up + // to the system dictionary or any other structures, so a .class file can + // be loaded several times if desired. + // The system dictionary hookup is done by the caller. + // + // "parsed_name" is updated by this method, and is the name found + // while parsing the stream. + instanceKlassHandle parseClassFile(symbolHandle name, + Handle class_loader, + Handle protection_domain, + symbolHandle& parsed_name, + TRAPS); + + // Verifier checks + static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); + static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); + static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); + static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); +};