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src/share/vm/classfile/classFileParser.hpp@eef07cd490d4 (annotated)

src/share/vm/classfile/classFileParser.hpp

Wed, 03 Jul 2019 20:42:37 +0800

author

aoqi

date

Wed, 03 Jul 2019 20:42:37 +0800

changeset 9637

eef07cd490d4

parent 8856

ac27a9c85bea

child 9931

fd44df5e3bc3

permissions

-rw-r--r--

Merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
aoqi@0	26	#define SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
aoqi@0	27
aoqi@0	28	#include "classfile/classFileStream.hpp"
aoqi@0	29	#include "memory/resourceArea.hpp"
aoqi@0	30	#include "oops/oop.inline.hpp"
aoqi@0	31	#include "oops/typeArrayOop.hpp"
aoqi@0	32	#include "runtime/handles.inline.hpp"
aoqi@0	33	#include "utilities/accessFlags.hpp"
aoqi@0	34	#include "classfile/symbolTable.hpp"
aoqi@0	35
aoqi@0	36	class FieldAllocationCount;
aoqi@0	37	class FieldLayoutInfo;
aoqi@0	38
aoqi@0	39
aoqi@0	40	// Parser for for .class files
aoqi@0	41	//
aoqi@0	42	// The bytes describing the class file structure is read from a Stream object
aoqi@0	43
aoqi@0	44	class ClassFileParser VALUE_OBJ_CLASS_SPEC {
aoqi@0	45	private:
aoqi@0	46	bool _need_verify;
aoqi@0	47	bool _relax_verify;
aoqi@0	48	u2 _major_version;
aoqi@0	49	u2 _minor_version;
aoqi@0	50	Symbol* _class_name;
aoqi@0	51	ClassLoaderData* _loader_data;
aoqi@0	52	KlassHandle _host_klass;
aoqi@0	53	GrowableArray<Handle>* _cp_patches; // overrides for CP entries
aoqi@0	54
aoqi@0	55	// precomputed flags
aoqi@0	56	bool _has_finalizer;
aoqi@0	57	bool _has_empty_finalizer;
aoqi@0	58	bool _has_vanilla_constructor;
aoqi@0	59	int _max_bootstrap_specifier_index; // detects BSS values
aoqi@0	60
aoqi@0	61	// class attributes parsed before the instance klass is created:
aoqi@0	62	bool _synthetic_flag;
aoqi@0	63	int _sde_length;
aoqi@0	64	char* _sde_buffer;
aoqi@0	65	u2 _sourcefile_index;
aoqi@0	66	u2 _generic_signature_index;
aoqi@0	67
aoqi@0	68	// Metadata created before the instance klass is created. Must be deallocated
aoqi@0	69	// if not transferred to the InstanceKlass upon successful class loading
aoqi@0	70	// in which case these pointers have been set to NULL.
aoqi@0	71	instanceKlassHandle _super_klass;
aoqi@0	72	ConstantPool* _cp;
aoqi@0	73	Array<u2>* _fields;
aoqi@0	74	Array<Method*>* _methods;
aoqi@0	75	Array<u2>* _inner_classes;
aoqi@0	76	Array<Klass*>* _local_interfaces;
aoqi@0	77	Array<Klass*>* _transitive_interfaces;
stefank@7417	78	Annotations* _combined_annotations;
aoqi@0	79	AnnotationArray* _annotations;
aoqi@0	80	AnnotationArray* _type_annotations;
aoqi@0	81	Array<AnnotationArray*>* _fields_annotations;
aoqi@0	82	Array<AnnotationArray*>* _fields_type_annotations;
aoqi@0	83	InstanceKlass* _klass; // InstanceKlass once created.
aoqi@0	84
aoqi@0	85	void set_class_synthetic_flag(bool x) { _synthetic_flag = x; }
aoqi@0	86	void set_class_sourcefile_index(u2 x) { _sourcefile_index = x; }
aoqi@0	87	void set_class_generic_signature_index(u2 x) { _generic_signature_index = x; }
aoqi@0	88	void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; }
aoqi@0	89
stefank@7417	90	void create_combined_annotations(TRAPS);
stefank@7417	91
aoqi@0	92	void init_parsed_class_attributes(ClassLoaderData* loader_data) {
aoqi@0	93	_loader_data = loader_data;
aoqi@0	94	_synthetic_flag = false;
aoqi@0	95	_sourcefile_index = 0;
aoqi@0	96	_generic_signature_index = 0;
aoqi@0	97	_sde_buffer = NULL;
aoqi@0	98	_sde_length = 0;
aoqi@0	99	// initialize the other flags too:
aoqi@0	100	_has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
aoqi@0	101	_max_bootstrap_specifier_index = -1;
aoqi@0	102	clear_class_metadata();
aoqi@0	103	_klass = NULL;
aoqi@0	104	}
aoqi@0	105	void apply_parsed_class_attributes(instanceKlassHandle k); // update k
aoqi@0	106	void apply_parsed_class_metadata(instanceKlassHandle k, int fields_count, TRAPS);
aoqi@0	107	void clear_class_metadata() {
aoqi@0	108	// metadata created before the instance klass is created. Must be
aoqi@0	109	// deallocated if classfile parsing returns an error.
aoqi@0	110	_cp = NULL;
aoqi@0	111	_fields = NULL;
aoqi@0	112	_methods = NULL;
aoqi@0	113	_inner_classes = NULL;
aoqi@0	114	_local_interfaces = NULL;
aoqi@0	115	_transitive_interfaces = NULL;
stefank@7417	116	_combined_annotations = NULL;
aoqi@0	117	_annotations = _type_annotations = NULL;
aoqi@0	118	_fields_annotations = _fields_type_annotations = NULL;
aoqi@0	119	}
aoqi@0	120
aoqi@0	121	class AnnotationCollector {
aoqi@0	122	public:
aoqi@0	123	enum Location { _in_field, _in_method, _in_class };
aoqi@0	124	enum ID {
aoqi@0	125	_unknown = 0,
aoqi@0	126	_method_CallerSensitive,
aoqi@0	127	_method_ForceInline,
aoqi@0	128	_method_DontInline,
vlivanov@7890	129	_method_InjectedProfile,
aoqi@0	130	_method_LambdaForm_Compiled,
aoqi@0	131	_method_LambdaForm_Hidden,
aoqi@0	132	_sun_misc_Contended,
aoqi@0	133	_field_Stable,
aoqi@0	134	_annotation_LIMIT
aoqi@0	135	};
aoqi@0	136	const Location _location;
aoqi@0	137	int _annotations_present;
aoqi@0	138	u2 _contended_group;
aoqi@0	139
aoqi@0	140	AnnotationCollector(Location location)
aoqi@0	141	: _location(location), _annotations_present(0)
aoqi@0	142	{
aoqi@0	143	assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, "");
aoqi@0	144	}
aoqi@0	145	// If this annotation name has an ID, report it (or _none).
aoqi@0	146	ID annotation_index(ClassLoaderData* loader_data, Symbol* name);
aoqi@0	147	// Set the annotation name:
aoqi@0	148	void set_annotation(ID id) {
aoqi@0	149	assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
aoqi@0	150	_annotations_present |= nth_bit((int)id);
aoqi@0	151	}
aoqi@0	152
aoqi@0	153	void remove_annotation(ID id) {
aoqi@0	154	assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
aoqi@0	155	_annotations_present &= ~nth_bit((int)id);
aoqi@0	156	}
aoqi@0	157
aoqi@0	158	// Report if the annotation is present.
aoqi@0	159	bool has_any_annotations() const { return _annotations_present != 0; }
aoqi@0	160	bool has_annotation(ID id) const { return (nth_bit((int)id) & _annotations_present) != 0; }
aoqi@0	161
aoqi@0	162	void set_contended_group(u2 group) { _contended_group = group; }
aoqi@0	163	u2 contended_group() const { return _contended_group; }
aoqi@0	164
aoqi@0	165	bool is_contended() const { return has_annotation(_sun_misc_Contended); }
aoqi@0	166
aoqi@0	167	void set_stable(bool stable) { set_annotation(_field_Stable); }
aoqi@0	168	bool is_stable() const { return has_annotation(_field_Stable); }
aoqi@0	169	};
aoqi@0	170
aoqi@0	171	// This class also doubles as a holder for metadata cleanup.
aoqi@0	172	class FieldAnnotationCollector: public AnnotationCollector {
aoqi@0	173	ClassLoaderData* _loader_data;
aoqi@0	174	AnnotationArray* _field_annotations;
aoqi@0	175	AnnotationArray* _field_type_annotations;
aoqi@0	176	public:
aoqi@0	177	FieldAnnotationCollector(ClassLoaderData* loader_data) :
aoqi@0	178	AnnotationCollector(_in_field),
aoqi@0	179	_loader_data(loader_data),
aoqi@0	180	_field_annotations(NULL),
aoqi@0	181	_field_type_annotations(NULL) {}
aoqi@0	182	void apply_to(FieldInfo* f);
aoqi@0	183	~FieldAnnotationCollector();
aoqi@0	184	AnnotationArray* field_annotations() { return _field_annotations; }
aoqi@0	185	AnnotationArray* field_type_annotations() { return _field_type_annotations; }
aoqi@0	186
aoqi@0	187	void set_field_annotations(AnnotationArray* a) { _field_annotations = a; }
aoqi@0	188	void set_field_type_annotations(AnnotationArray* a) { _field_type_annotations = a; }
aoqi@0	189	};
aoqi@0	190
aoqi@0	191	class MethodAnnotationCollector: public AnnotationCollector {
aoqi@0	192	public:
aoqi@0	193	MethodAnnotationCollector() : AnnotationCollector(_in_method) { }
aoqi@0	194	void apply_to(methodHandle m);
aoqi@0	195	};
aoqi@0	196	class ClassAnnotationCollector: public AnnotationCollector {
aoqi@0	197	public:
aoqi@0	198	ClassAnnotationCollector() : AnnotationCollector(_in_class) { }
aoqi@0	199	void apply_to(instanceKlassHandle k);
aoqi@0	200	};
aoqi@0	201
aoqi@0	202	enum { fixed_buffer_size = 128 };
aoqi@0	203	u_char linenumbertable_buffer[fixed_buffer_size];
aoqi@0	204
aoqi@0	205	ClassFileStream* _stream; // Actual input stream
aoqi@0	206
aoqi@0	207	enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
aoqi@0	208
aoqi@0	209	// Accessors
aoqi@0	210	ClassFileStream* stream() { return _stream; }
aoqi@0	211	void set_stream(ClassFileStream* st) { _stream = st; }
aoqi@0	212
aoqi@0	213	// Constant pool parsing
aoqi@0	214	void parse_constant_pool_entries(int length, TRAPS);
aoqi@0	215
aoqi@0	216	constantPoolHandle parse_constant_pool(TRAPS);
aoqi@0	217
aoqi@0	218	// Interface parsing
aoqi@0	219	Array<Klass*>* parse_interfaces(int length,
aoqi@0	220	Handle protection_domain,
aoqi@0	221	Symbol* class_name,
aoqi@0	222	bool* has_default_methods,
aoqi@0	223	TRAPS);
aoqi@0	224	void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS);
aoqi@0	225
aoqi@0	226	instanceKlassHandle parse_super_class(int super_class_index, TRAPS);
aoqi@0	227	// Field parsing
aoqi@0	228	void parse_field_attributes(u2 attributes_count,
aoqi@0	229	bool is_static, u2 signature_index,
aoqi@0	230	u2* constantvalue_index_addr,
aoqi@0	231	bool* is_synthetic_addr,
aoqi@0	232	u2* generic_signature_index_addr,
aoqi@0	233	FieldAnnotationCollector* parsed_annotations,
aoqi@0	234	TRAPS);
aoqi@0	235	Array<u2>* parse_fields(Symbol* class_name,
aoqi@0	236	bool is_interface,
aoqi@0	237	FieldAllocationCount *fac,
aoqi@0	238	u2* java_fields_count_ptr, TRAPS);
aoqi@0	239
aoqi@0	240	void print_field_layout(Symbol* name,
aoqi@0	241	Array<u2>* fields,
aoqi@0	242	constantPoolHandle cp,
aoqi@0	243	int instance_size,
aoqi@0	244	int instance_fields_start,
aoqi@0	245	int instance_fields_end,
aoqi@0	246	int static_fields_end);
aoqi@0	247
aoqi@0	248	// Method parsing
aoqi@0	249	methodHandle parse_method(bool is_interface,
aoqi@0	250	AccessFlags* promoted_flags,
aoqi@0	251	TRAPS);
aoqi@0	252	Array<Method*>* parse_methods(bool is_interface,
aoqi@0	253	AccessFlags* promoted_flags,
aoqi@0	254	bool* has_final_method,
acorn@7290	255	bool* declares_default_methods,
aoqi@0	256	TRAPS);
aoqi@0	257	intArray* sort_methods(Array<Method*>* methods);
aoqi@0	258
aoqi@0	259	u2* parse_exception_table(u4 code_length, u4 exception_table_length,
aoqi@0	260	TRAPS);
aoqi@0	261	void parse_linenumber_table(
aoqi@0	262	u4 code_attribute_length, u4 code_length,
aoqi@0	263	CompressedLineNumberWriteStream** write_stream, TRAPS);
aoqi@0	264	u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
aoqi@0	265	u2* localvariable_table_length,
aoqi@0	266	bool isLVTT, TRAPS);
aoqi@0	267	u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
aoqi@0	268	TRAPS);
aoqi@0	269	void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
aoqi@0	270	u1* u1_array, u2* u2_array, TRAPS);
aoqi@0	271	u1* parse_stackmap_table(u4 code_attribute_length, TRAPS);
aoqi@0	272
aoqi@0	273	// Classfile attribute parsing
aoqi@0	274	u2 parse_generic_signature_attribute(TRAPS);
aoqi@0	275	void parse_classfile_sourcefile_attribute(TRAPS);
aoqi@0	276	void parse_classfile_source_debug_extension_attribute(int length, TRAPS);
aoqi@0	277	u2 parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start,
aoqi@0	278	bool parsed_enclosingmethod_attribute,
aoqi@0	279	u2 enclosing_method_class_index,
aoqi@0	280	u2 enclosing_method_method_index,
aoqi@0	281	TRAPS);
aoqi@0	282	void parse_classfile_attributes(ClassAnnotationCollector* parsed_annotations,
aoqi@0	283	TRAPS);
aoqi@0	284	void parse_classfile_synthetic_attribute(TRAPS);
aoqi@0	285	void parse_classfile_signature_attribute(TRAPS);
aoqi@0	286	void parse_classfile_bootstrap_methods_attribute(u4 attribute_length, TRAPS);
aoqi@0	287
aoqi@0	288	// Annotations handling
aoqi@0	289	AnnotationArray* assemble_annotations(u1* runtime_visible_annotations,
aoqi@0	290	int runtime_visible_annotations_length,
aoqi@0	291	u1* runtime_invisible_annotations,
aoqi@0	292	int runtime_invisible_annotations_length, TRAPS);
aoqi@0	293	int skip_annotation(u1* buffer, int limit, int index);
aoqi@0	294	int skip_annotation_value(u1* buffer, int limit, int index);
aoqi@0	295	void parse_annotations(u1* buffer, int limit,
aoqi@0	296	/* Results (currently, only one result is supported): */
aoqi@0	297	AnnotationCollector* result,
aoqi@0	298	TRAPS);
aoqi@0	299
aoqi@0	300	// Final setup
aoqi@0	301	unsigned int compute_oop_map_count(instanceKlassHandle super,
aoqi@0	302	unsigned int nonstatic_oop_count,
aoqi@0	303	int first_nonstatic_oop_offset);
aoqi@0	304	void fill_oop_maps(instanceKlassHandle k,
aoqi@0	305	unsigned int nonstatic_oop_map_count,
aoqi@0	306	int* nonstatic_oop_offsets,
aoqi@0	307	unsigned int* nonstatic_oop_counts);
aoqi@0	308	void set_precomputed_flags(instanceKlassHandle k);
aoqi@0	309	Array<Klass*>* compute_transitive_interfaces(instanceKlassHandle super,
aoqi@0	310	Array<Klass*>* local_ifs, TRAPS);
aoqi@0	311
aoqi@0	312	// Format checker methods
aoqi@0	313	void classfile_parse_error(const char* msg, TRAPS);
aoqi@0	314	void classfile_parse_error(const char* msg, int index, TRAPS);
aoqi@0	315	void classfile_parse_error(const char* msg, const char *name, TRAPS);
aoqi@0	316	void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
shshahma@8761	317	void classfile_parse_error(const char* msg, const char* name, const char* signature, TRAPS);
aoqi@0	318	inline void guarantee_property(bool b, const char* msg, TRAPS) {
aoqi@0	319	if (!b) { classfile_parse_error(msg, CHECK); }
aoqi@0	320	}
aoqi@0	321
aoqi@0	322	PRAGMA_DIAG_PUSH
aoqi@0	323	PRAGMA_FORMAT_NONLITERAL_IGNORED
aoqi@0	324	inline void assert_property(bool b, const char* msg, TRAPS) {
aoqi@0	325	#ifdef ASSERT
aoqi@0	326	if (!b) {
aoqi@0	327	ResourceMark rm(THREAD);
aoqi@0	328	fatal(err_msg(msg, _class_name->as_C_string()));
aoqi@0	329	}
aoqi@0	330	#endif
aoqi@0	331	}
aoqi@0	332
aoqi@0	333	inline void assert_property(bool b, const char* msg, int index, TRAPS) {
aoqi@0	334	#ifdef ASSERT
aoqi@0	335	if (!b) {
aoqi@0	336	ResourceMark rm(THREAD);
aoqi@0	337	fatal(err_msg(msg, index, _class_name->as_C_string()));
aoqi@0	338	}
aoqi@0	339	#endif
aoqi@0	340	}
aoqi@0	341	PRAGMA_DIAG_POP
aoqi@0	342
aoqi@0	343	inline void check_property(bool property, const char* msg, int index, TRAPS) {
aoqi@0	344	if (_need_verify) {
aoqi@0	345	guarantee_property(property, msg, index, CHECK);
aoqi@0	346	} else {
aoqi@0	347	assert_property(property, msg, index, CHECK);
aoqi@0	348	}
aoqi@0	349	}
aoqi@0	350
aoqi@0	351	inline void check_property(bool property, const char* msg, TRAPS) {
aoqi@0	352	if (_need_verify) {
aoqi@0	353	guarantee_property(property, msg, CHECK);
aoqi@0	354	} else {
aoqi@0	355	assert_property(property, msg, CHECK);
aoqi@0	356	}
aoqi@0	357	}
aoqi@0	358
aoqi@0	359	inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
aoqi@0	360	if (!b) { classfile_parse_error(msg, index, CHECK); }
aoqi@0	361	}
aoqi@0	362	inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
aoqi@0	363	if (!b) { classfile_parse_error(msg, name, CHECK); }
aoqi@0	364	}
aoqi@0	365	inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
aoqi@0	366	if (!b) { classfile_parse_error(msg, index, name, CHECK); }
aoqi@0	367	}
aoqi@0	368
aoqi@0	369	void throwIllegalSignature(
aoqi@0	370	const char* type, Symbol* name, Symbol* sig, TRAPS);
aoqi@0	371
aoqi@0	372	bool is_supported_version(u2 major, u2 minor);
aoqi@0	373	bool has_illegal_visibility(jint flags);
aoqi@0	374
aoqi@0	375	void verify_constantvalue(int constantvalue_index, int signature_index, TRAPS);
aoqi@0	376	void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
aoqi@0	377	void verify_legal_class_name(Symbol* name, TRAPS);
aoqi@0	378	void verify_legal_field_name(Symbol* name, TRAPS);
aoqi@0	379	void verify_legal_method_name(Symbol* name, TRAPS);
aoqi@0	380	void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS);
aoqi@0	381	int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS);
aoqi@0	382	void verify_legal_class_modifiers(jint flags, TRAPS);
aoqi@0	383	void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
aoqi@0	384	void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS);
aoqi@0	385	bool verify_unqualified_name(char* name, unsigned int length, int type);
aoqi@0	386	char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
aoqi@0	387	char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
aoqi@0	388
aoqi@0	389	bool is_anonymous() {
aoqi@0	390	assert(EnableInvokeDynamic || _host_klass.is_null(), "");
aoqi@0	391	return _host_klass.not_null();
aoqi@0	392	}
aoqi@0	393	bool has_cp_patch_at(int index) {
aoqi@0	394	assert(EnableInvokeDynamic, "");
aoqi@0	395	assert(index >= 0, "oob");
aoqi@0	396	return (_cp_patches != NULL
aoqi@0	397	&& index < _cp_patches->length()
aoqi@0	398	&& _cp_patches->adr_at(index)->not_null());
aoqi@0	399	}
aoqi@0	400	Handle cp_patch_at(int index) {
aoqi@0	401	assert(has_cp_patch_at(index), "oob");
aoqi@0	402	return _cp_patches->at(index);
aoqi@0	403	}
aoqi@0	404	Handle clear_cp_patch_at(int index) {
aoqi@0	405	Handle patch = cp_patch_at(index);
aoqi@0	406	_cp_patches->at_put(index, Handle());
aoqi@0	407	assert(!has_cp_patch_at(index), "");
aoqi@0	408	return patch;
aoqi@0	409	}
aoqi@0	410	void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
aoqi@0	411
aoqi@0	412	// Wrapper for constantTag.is_klass_[or_]reference.
aoqi@0	413	// In older versions of the VM, Klass*s cannot sneak into early phases of
aoqi@0	414	// constant pool construction, but in later versions they can.
aoqi@0	415	// %%% Let's phase out the old is_klass_reference.
aoqi@0	416	bool valid_klass_reference_at(int index) {
aoqi@0	417	return _cp->is_within_bounds(index) &&
aoqi@0	418	(EnableInvokeDynamic
aoqi@0	419	? _cp->tag_at(index).is_klass_or_reference()
aoqi@0	420	: _cp->tag_at(index).is_klass_reference());
aoqi@0	421	}
aoqi@0	422
aoqi@0	423	// Checks that the cpool index is in range and is a utf8
aoqi@0	424	bool valid_symbol_at(int cpool_index) {
aoqi@0	425	return (_cp->is_within_bounds(cpool_index) &&
aoqi@0	426	_cp->tag_at(cpool_index).is_utf8());
aoqi@0	427	}
aoqi@0	428
aoqi@0	429	void copy_localvariable_table(ConstMethod* cm, int lvt_cnt,
aoqi@0	430	u2* localvariable_table_length,
aoqi@0	431	u2** localvariable_table_start,
aoqi@0	432	int lvtt_cnt,
aoqi@0	433	u2* localvariable_type_table_length,
aoqi@0	434	u2** localvariable_type_table_start,
aoqi@0	435	TRAPS);
aoqi@0	436
aoqi@0	437	void copy_method_annotations(ConstMethod* cm,
aoqi@0	438	u1* runtime_visible_annotations,
aoqi@0	439	int runtime_visible_annotations_length,
aoqi@0	440	u1* runtime_invisible_annotations,
aoqi@0	441	int runtime_invisible_annotations_length,
aoqi@0	442	u1* runtime_visible_parameter_annotations,
aoqi@0	443	int runtime_visible_parameter_annotations_length,
aoqi@0	444	u1* runtime_invisible_parameter_annotations,
aoqi@0	445	int runtime_invisible_parameter_annotations_length,
aoqi@0	446	u1* runtime_visible_type_annotations,
aoqi@0	447	int runtime_visible_type_annotations_length,
aoqi@0	448	u1* runtime_invisible_type_annotations,
aoqi@0	449	int runtime_invisible_type_annotations_length,
aoqi@0	450	u1* annotation_default,
aoqi@0	451	int annotation_default_length,
aoqi@0	452	TRAPS);
aoqi@0	453
aoqi@0	454	// lays out fields in class and returns the total oopmap count
aoqi@0	455	void layout_fields(Handle class_loader, FieldAllocationCount* fac,
aoqi@0	456	ClassAnnotationCollector* parsed_annotations,
aoqi@0	457	FieldLayoutInfo* info, TRAPS);
aoqi@0	458
aoqi@0	459	public:
aoqi@0	460	// Constructor
aoqi@0	461	ClassFileParser(ClassFileStream* st) { set_stream(st); }
aoqi@0	462	~ClassFileParser();
aoqi@0	463
aoqi@0	464	// Parse .class file and return new Klass*. The Klass* is not hooked up
aoqi@0	465	// to the system dictionary or any other structures, so a .class file can
aoqi@0	466	// be loaded several times if desired.
aoqi@0	467	// The system dictionary hookup is done by the caller.
aoqi@0	468	//
aoqi@0	469	// "parsed_name" is updated by this method, and is the name found
aoqi@0	470	// while parsing the stream.
aoqi@0	471	instanceKlassHandle parseClassFile(Symbol* name,
aoqi@0	472	ClassLoaderData* loader_data,
aoqi@0	473	Handle protection_domain,
aoqi@0	474	TempNewSymbol& parsed_name,
aoqi@0	475	bool verify,
aoqi@0	476	TRAPS) {
aoqi@0	477	KlassHandle no_host_klass;
aoqi@0	478	return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
aoqi@0	479	}
aoqi@0	480	instanceKlassHandle parseClassFile(Symbol* name,
aoqi@0	481	ClassLoaderData* loader_data,
aoqi@0	482	Handle protection_domain,
aoqi@0	483	KlassHandle host_klass,
aoqi@0	484	GrowableArray<Handle>* cp_patches,
aoqi@0	485	TempNewSymbol& parsed_name,
aoqi@0	486	bool verify,
aoqi@0	487	TRAPS);
aoqi@0	488
aoqi@0	489	// Verifier checks
aoqi@0	490	static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
aoqi@0	491	static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
aoqi@0	492	static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
aoqi@0	493	static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
aoqi@0	494	};
aoqi@0	495
aoqi@0	496	#endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP