Mercurial > hg > graal-jvmci-8
annotate src/share/vm/classfile/classFileParser.hpp @ 9071:68fe50d4f1d5
8011343: Add new flag for verifying the heap during startup
Summary: Perform verification during VM startup under control of new flag and within a VMOperation.
Reviewed-by: stefank, jmasa, brutisso
author | johnc |
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date | Fri, 05 Apr 2013 10:20:04 -0700 |
parents | 16885e702c88 |
children | 9befe2fce567 |
rev | line source |
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0 | 1 /* |
8031 | 2 * Copyright (c) 1997, 2013, 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" | |
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34 #include "classfile/symbolTable.hpp" |
1972 | 35 |
3938 | 36 class FieldAllocationCount; |
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37 class FieldLayoutInfo; |
3938 | 38 |
39 | |
0 | 40 // Parser for for .class files |
41 // | |
42 // The bytes describing the class file structure is read from a Stream object | |
43 | |
44 class ClassFileParser VALUE_OBJ_CLASS_SPEC { | |
45 private: | |
46 bool _need_verify; | |
47 bool _relax_verify; | |
48 u2 _major_version; | |
49 u2 _minor_version; | |
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50 Symbol* _class_name; |
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51 ClassLoaderData* _loader_data; |
710 | 52 KlassHandle _host_klass; |
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53 GrowableArray<Handle>* _cp_patches; // overrides for CP entries |
0 | 54 |
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55 // precomputed flags |
0 | 56 bool _has_finalizer; |
57 bool _has_empty_finalizer; | |
58 bool _has_vanilla_constructor; | |
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59 int _max_bootstrap_specifier_index; // detects BSS values |
0 | 60 |
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61 // class attributes parsed before the instance klass is created: |
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62 bool _synthetic_flag; |
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63 int _sde_length; |
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64 char* _sde_buffer; |
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65 Symbol* _sourcefile; |
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66 Symbol* _generic_signature; |
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67 |
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68 // Metadata created before the instance klass is created. Must be deallocated |
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69 // if not transferred to the InstanceKlass upon successful class loading |
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70 // in which case these pointers have been set to NULL. |
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71 instanceKlassHandle _super_klass; |
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72 ConstantPool* _cp; |
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73 Array<u2>* _fields; |
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74 Array<Method*>* _methods; |
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75 Array<u2>* _inner_classes; |
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76 Array<Klass*>* _local_interfaces; |
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77 Array<Klass*>* _transitive_interfaces; |
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78 AnnotationArray* _annotations; |
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79 AnnotationArray* _type_annotations; |
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80 Array<AnnotationArray*>* _fields_annotations; |
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81 Array<AnnotationArray*>* _fields_type_annotations; |
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82 InstanceKlass* _klass; // InstanceKlass once created. |
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83 |
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84 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; } |
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85 void set_class_sourcefile(Symbol* x) { _sourcefile = x; } |
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86 void set_class_generic_signature(Symbol* x) { _generic_signature = x; } |
6226 | 87 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; } |
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88 |
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89 void init_parsed_class_attributes(ClassLoaderData* loader_data) { |
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90 _loader_data = loader_data; |
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91 _synthetic_flag = false; |
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92 _sourcefile = NULL; |
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93 _generic_signature = NULL; |
6226 | 94 _sde_buffer = NULL; |
95 _sde_length = 0; | |
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96 // initialize the other flags too: |
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97 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; |
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98 _max_bootstrap_specifier_index = -1; |
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99 clear_class_metadata(); |
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100 _klass = NULL; |
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101 } |
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102 void apply_parsed_class_attributes(instanceKlassHandle k); // update k |
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103 void apply_parsed_class_metadata(instanceKlassHandle k, int fields_count, TRAPS); |
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104 void clear_class_metadata() { |
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105 // metadata created before the instance klass is created. Must be |
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106 // deallocated if classfile parsing returns an error. |
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107 _cp = NULL; |
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108 _fields = NULL; |
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109 _methods = NULL; |
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110 _inner_classes = NULL; |
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111 _local_interfaces = NULL; |
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112 _transitive_interfaces = NULL; |
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113 _annotations = _type_annotations = NULL; |
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114 _fields_annotations = _fields_type_annotations = NULL; |
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115 } |
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116 |
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117 class AnnotationCollector { |
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118 public: |
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119 enum Location { _in_field, _in_method, _in_class }; |
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120 enum ID { |
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121 _unknown = 0, |
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122 _method_CallerSensitive, |
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123 _method_ForceInline, |
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124 _method_DontInline, |
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125 _method_LambdaForm_Compiled, |
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126 _method_LambdaForm_Hidden, |
7587 | 127 _sun_misc_Contended, |
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128 _annotation_LIMIT |
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129 }; |
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130 const Location _location; |
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131 int _annotations_present; |
7587 | 132 u2 _contended_group; |
133 | |
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134 AnnotationCollector(Location location) |
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135 : _location(location), _annotations_present(0) |
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136 { |
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137 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, ""); |
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138 } |
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139 // If this annotation name has an ID, report it (or _none). |
7587 | 140 ID annotation_index(ClassLoaderData* loader_data, Symbol* name); |
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141 // Set the annotation name: |
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142 void set_annotation(ID id) { |
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143 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob"); |
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144 _annotations_present |= nth_bit((int)id); |
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145 } |
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146 // Report if the annotation is present. |
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147 bool has_any_annotations() { return _annotations_present != 0; } |
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148 bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; } |
7587 | 149 |
150 void set_contended_group(u2 group) { _contended_group = group; } | |
151 u2 contended_group() { return _contended_group; } | |
152 | |
153 void set_contended(bool contended) { set_annotation(_sun_misc_Contended); } | |
154 bool is_contended() { return has_annotation(_sun_misc_Contended); } | |
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155 }; |
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156 |
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157 // This class also doubles as a holder for metadata cleanup. |
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158 class FieldAnnotationCollector: public AnnotationCollector { |
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159 ClassLoaderData* _loader_data; |
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160 AnnotationArray* _field_annotations; |
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161 AnnotationArray* _field_type_annotations; |
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162 public: |
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163 FieldAnnotationCollector(ClassLoaderData* loader_data) : |
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164 AnnotationCollector(_in_field), |
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165 _loader_data(loader_data), |
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166 _field_annotations(NULL), |
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167 _field_type_annotations(NULL) {} |
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168 void apply_to(FieldInfo* f); |
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169 ~FieldAnnotationCollector(); |
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170 AnnotationArray* field_annotations() { return _field_annotations; } |
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171 AnnotationArray* field_type_annotations() { return _field_type_annotations; } |
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172 |
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173 void set_field_annotations(AnnotationArray* a) { _field_annotations = a; } |
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174 void set_field_type_annotations(AnnotationArray* a) { _field_type_annotations = a; } |
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175 }; |
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176 |
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177 class MethodAnnotationCollector: public AnnotationCollector { |
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178 public: |
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179 MethodAnnotationCollector() : AnnotationCollector(_in_method) { } |
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180 void apply_to(methodHandle m); |
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181 }; |
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182 class ClassAnnotationCollector: public AnnotationCollector { |
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183 public: |
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184 ClassAnnotationCollector() : AnnotationCollector(_in_class) { } |
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185 void apply_to(instanceKlassHandle k); |
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186 }; |
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187 |
0 | 188 enum { fixed_buffer_size = 128 }; |
189 u_char linenumbertable_buffer[fixed_buffer_size]; | |
190 | |
191 ClassFileStream* _stream; // Actual input stream | |
192 | |
193 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names | |
194 | |
195 // Accessors | |
196 ClassFileStream* stream() { return _stream; } | |
197 void set_stream(ClassFileStream* st) { _stream = st; } | |
198 | |
199 // Constant pool parsing | |
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200 void parse_constant_pool_entries(int length, TRAPS); |
0 | 201 |
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202 constantPoolHandle parse_constant_pool(TRAPS); |
0 | 203 |
204 // Interface parsing | |
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205 Array<Klass*>* parse_interfaces(int length, |
0 | 206 Handle protection_domain, |
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207 Symbol* class_name, |
6934 | 208 bool* has_default_methods, |
0 | 209 TRAPS); |
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210 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS); |
0 | 211 |
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212 instanceKlassHandle parse_super_class(int super_class_index, TRAPS); |
0 | 213 // Field parsing |
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214 void parse_field_attributes(u2 attributes_count, |
0 | 215 bool is_static, u2 signature_index, |
216 u2* constantvalue_index_addr, | |
217 bool* is_synthetic_addr, | |
218 u2* generic_signature_index_addr, | |
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219 FieldAnnotationCollector* parsed_annotations, |
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220 TRAPS); |
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221 Array<u2>* parse_fields(Symbol* class_name, |
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222 bool is_interface, |
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223 FieldAllocationCount *fac, |
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224 u2* java_fields_count_ptr, TRAPS); |
0 | 225 |
7587 | 226 void print_field_layout(Symbol* name, |
227 Array<u2>* fields, | |
228 constantPoolHandle cp, | |
229 int instance_size, | |
230 int instance_fields_start, | |
231 int instance_fields_end, | |
232 int static_fields_end); | |
233 | |
0 | 234 // Method parsing |
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235 methodHandle parse_method(bool is_interface, |
0 | 236 AccessFlags* promoted_flags, |
237 TRAPS); | |
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238 Array<Method*>* parse_methods(bool is_interface, |
0 | 239 AccessFlags* promoted_flags, |
240 bool* has_final_method, | |
6934 | 241 bool* has_default_method, |
0 | 242 TRAPS); |
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243 intArray* sort_methods(Array<Method*>* methods); |
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244 |
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245 u2* parse_exception_table(u4 code_length, u4 exception_table_length, |
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246 TRAPS); |
0 | 247 void parse_linenumber_table( |
248 u4 code_attribute_length, u4 code_length, | |
249 CompressedLineNumberWriteStream** write_stream, TRAPS); | |
250 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, | |
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251 u2* localvariable_table_length, |
0 | 252 bool isLVTT, TRAPS); |
253 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, | |
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254 TRAPS); |
0 | 255 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, |
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256 u1* u1_array, u2* u2_array, TRAPS); |
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257 u1* parse_stackmap_table(u4 code_attribute_length, TRAPS); |
0 | 258 |
259 // Classfile attribute parsing | |
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260 void parse_classfile_sourcefile_attribute(TRAPS); |
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261 void parse_classfile_source_debug_extension_attribute(int length, TRAPS); |
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262 u2 parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
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263 bool parsed_enclosingmethod_attribute, |
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264 u2 enclosing_method_class_index, |
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265 u2 enclosing_method_method_index, |
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266 TRAPS); |
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267 void parse_classfile_attributes(ClassAnnotationCollector* parsed_annotations, |
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268 TRAPS); |
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269 void parse_classfile_synthetic_attribute(TRAPS); |
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270 void parse_classfile_signature_attribute(TRAPS); |
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271 void parse_classfile_bootstrap_methods_attribute(u4 attribute_length, TRAPS); |
0 | 272 |
273 // Annotations handling | |
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274 AnnotationArray* assemble_annotations(u1* runtime_visible_annotations, |
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275 int runtime_visible_annotations_length, |
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276 u1* runtime_invisible_annotations, |
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277 int runtime_invisible_annotations_length, TRAPS); |
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278 int skip_annotation(u1* buffer, int limit, int index); |
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279 int skip_annotation_value(u1* buffer, int limit, int index); |
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280 void parse_annotations(u1* buffer, int limit, |
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281 /* Results (currently, only one result is supported): */ |
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282 AnnotationCollector* result, |
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283 TRAPS); |
0 | 284 |
285 // Final setup | |
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286 unsigned int compute_oop_map_count(instanceKlassHandle super, |
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287 unsigned int nonstatic_oop_count, |
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288 int first_nonstatic_oop_offset); |
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289 void fill_oop_maps(instanceKlassHandle k, |
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290 unsigned int nonstatic_oop_map_count, |
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291 int* nonstatic_oop_offsets, |
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292 unsigned int* nonstatic_oop_counts); |
0 | 293 void set_precomputed_flags(instanceKlassHandle k); |
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294 Array<Klass*>* compute_transitive_interfaces(instanceKlassHandle super, |
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295 Array<Klass*>* local_ifs, TRAPS); |
0 | 296 |
297 // Format checker methods | |
298 void classfile_parse_error(const char* msg, TRAPS); | |
299 void classfile_parse_error(const char* msg, int index, TRAPS); | |
300 void classfile_parse_error(const char* msg, const char *name, TRAPS); | |
301 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); | |
302 inline void guarantee_property(bool b, const char* msg, TRAPS) { | |
303 if (!b) { classfile_parse_error(msg, CHECK); } | |
304 } | |
305 | |
306 inline void assert_property(bool b, const char* msg, TRAPS) { | |
307 #ifdef ASSERT | |
308 if (!b) { fatal(msg); } | |
309 #endif | |
310 } | |
311 | |
312 inline void check_property(bool property, const char* msg, int index, TRAPS) { | |
313 if (_need_verify) { | |
314 guarantee_property(property, msg, index, CHECK); | |
315 } else { | |
316 assert_property(property, msg, CHECK); | |
317 } | |
318 } | |
319 | |
320 inline void check_property(bool property, const char* msg, TRAPS) { | |
321 if (_need_verify) { | |
322 guarantee_property(property, msg, CHECK); | |
323 } else { | |
324 assert_property(property, msg, CHECK); | |
325 } | |
326 } | |
327 | |
328 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { | |
329 if (!b) { classfile_parse_error(msg, index, CHECK); } | |
330 } | |
331 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { | |
332 if (!b) { classfile_parse_error(msg, name, CHECK); } | |
333 } | |
334 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { | |
335 if (!b) { classfile_parse_error(msg, index, name, CHECK); } | |
336 } | |
337 | |
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338 void throwIllegalSignature( |
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339 const char* type, Symbol* name, Symbol* sig, TRAPS); |
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340 |
0 | 341 bool is_supported_version(u2 major, u2 minor); |
342 bool has_illegal_visibility(jint flags); | |
343 | |
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344 void verify_constantvalue(int constantvalue_index, int signature_index, TRAPS); |
0 | 345 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); |
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346 void verify_legal_class_name(Symbol* name, TRAPS); |
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347 void verify_legal_field_name(Symbol* name, TRAPS); |
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348 void verify_legal_method_name(Symbol* name, TRAPS); |
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349 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS); |
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350 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS); |
0 | 351 void verify_legal_class_modifiers(jint flags, TRAPS); |
352 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); | |
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353 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS); |
0 | 354 bool verify_unqualified_name(char* name, unsigned int length, int type); |
355 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); | |
356 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); | |
357 | |
710 | 358 bool is_anonymous() { |
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359 assert(EnableInvokeDynamic || _host_klass.is_null(), ""); |
710 | 360 return _host_klass.not_null(); |
361 } | |
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362 bool has_cp_patch_at(int index) { |
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363 assert(EnableInvokeDynamic, ""); |
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364 assert(index >= 0, "oob"); |
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365 return (_cp_patches != NULL |
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366 && index < _cp_patches->length() |
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367 && _cp_patches->adr_at(index)->not_null()); |
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368 } |
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369 Handle cp_patch_at(int index) { |
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370 assert(has_cp_patch_at(index), "oob"); |
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371 return _cp_patches->at(index); |
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372 } |
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373 Handle clear_cp_patch_at(int index) { |
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374 Handle patch = cp_patch_at(index); |
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375 _cp_patches->at_put(index, Handle()); |
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376 assert(!has_cp_patch_at(index), ""); |
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377 return patch; |
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378 } |
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379 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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380 |
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381 // Wrapper for constantTag.is_klass_[or_]reference. |
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382 // In older versions of the VM, Klass*s cannot sneak into early phases of |
431
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383 // constant pool construction, but in later versions they can. |
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384 // %%% Let's phase out the old is_klass_reference. |
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385 bool valid_klass_reference_at(int index) { |
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386 return _cp->is_within_bounds(index) && |
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387 (EnableInvokeDynamic |
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388 ? _cp->tag_at(index).is_klass_or_reference() |
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389 : _cp->tag_at(index).is_klass_reference()); |
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390 } |
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391 |
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392 // Checks that the cpool index is in range and is a utf8 |
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393 bool valid_symbol_at(int cpool_index) { |
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394 return (_cp->is_within_bounds(cpool_index) && |
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395 _cp->tag_at(cpool_index).is_utf8()); |
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396 } |
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397 |
8031 | 398 void copy_localvariable_table(ConstMethod* cm, int lvt_cnt, |
399 u2* localvariable_table_length, | |
400 u2** localvariable_table_start, | |
401 int lvtt_cnt, | |
402 u2* localvariable_type_table_length, | |
403 u2** localvariable_type_table_start, | |
404 TRAPS); | |
405 | |
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406 void copy_method_annotations(ConstMethod* cm, |
8031 | 407 u1* runtime_visible_annotations, |
408 int runtime_visible_annotations_length, | |
409 u1* runtime_invisible_annotations, | |
410 int runtime_invisible_annotations_length, | |
411 u1* runtime_visible_parameter_annotations, | |
412 int runtime_visible_parameter_annotations_length, | |
413 u1* runtime_invisible_parameter_annotations, | |
414 int runtime_invisible_parameter_annotations_length, | |
415 u1* runtime_visible_type_annotations, | |
416 int runtime_visible_type_annotations_length, | |
417 u1* runtime_invisible_type_annotations, | |
418 int runtime_invisible_type_annotations_length, | |
419 u1* annotation_default, | |
420 int annotation_default_length, | |
421 TRAPS); | |
422 | |
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423 // lays out fields in class and returns the total oopmap count |
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424 void layout_fields(Handle class_loader, FieldAllocationCount* fac, |
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425 ClassAnnotationCollector* parsed_annotations, |
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426 FieldLayoutInfo* info, TRAPS); |
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427 |
0 | 428 public: |
429 // Constructor | |
430 ClassFileParser(ClassFileStream* st) { set_stream(st); } | |
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431 ~ClassFileParser(); |
0 | 432 |
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433 // Parse .class file and return new Klass*. The Klass* is not hooked up |
0 | 434 // to the system dictionary or any other structures, so a .class file can |
435 // be loaded several times if desired. | |
436 // The system dictionary hookup is done by the caller. | |
437 // | |
438 // "parsed_name" is updated by this method, and is the name found | |
439 // while parsing the stream. | |
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440 instanceKlassHandle parseClassFile(Symbol* name, |
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441 ClassLoaderData* loader_data, |
0 | 442 Handle protection_domain, |
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443 TempNewSymbol& parsed_name, |
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444 bool verify, |
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445 TRAPS) { |
710 | 446 KlassHandle no_host_klass; |
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447 return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD); |
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448 } |
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449 instanceKlassHandle parseClassFile(Symbol* name, |
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450 ClassLoaderData* loader_data, |
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451 Handle protection_domain, |
710 | 452 KlassHandle host_klass, |
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453 GrowableArray<Handle>* cp_patches, |
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454 TempNewSymbol& parsed_name, |
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455 bool verify, |
0 | 456 TRAPS); |
457 | |
458 // Verifier checks | |
459 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); | |
460 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); | |
461 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); | |
462 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); | |
463 }; | |
1972 | 464 |
465 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |