Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.hpp @ 7627:c73c3f2c5b3b
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author | acorn |
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date | Mon, 21 Jan 2013 16:11:24 -0500 |
parents | 4a916f2ce331 |
children | 927a311d00f9 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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; |
37 | |
38 | |
0 | 39 // Parser for for .class files |
40 // | |
41 // The bytes describing the class file structure is read from a Stream object | |
42 | |
43 class ClassFileParser VALUE_OBJ_CLASS_SPEC { | |
44 private: | |
45 bool _need_verify; | |
46 bool _relax_verify; | |
47 u2 _major_version; | |
48 u2 _minor_version; | |
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49 Symbol* _class_name; |
710 | 50 KlassHandle _host_klass; |
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51 GrowableArray<Handle>* _cp_patches; // overrides for CP entries |
0 | 52 |
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53 // precomputed flags |
0 | 54 bool _has_finalizer; |
55 bool _has_empty_finalizer; | |
56 bool _has_vanilla_constructor; | |
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57 int _max_bootstrap_specifier_index; // detects BSS values |
0 | 58 |
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59 // class attributes parsed before the instance klass is created: |
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60 bool _synthetic_flag; |
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61 Symbol* _sourcefile; |
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62 Symbol* _generic_signature; |
6226 | 63 char* _sde_buffer; |
64 int _sde_length; | |
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65 Array<u2>* _inner_classes; |
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66 AnnotationArray* _annotations; |
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67 AnnotationArray* _type_annotations; |
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68 |
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69 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; } |
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70 void set_class_sourcefile(Symbol* x) { _sourcefile = x; } |
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71 void set_class_generic_signature(Symbol* x) { _generic_signature = x; } |
6226 | 72 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; } |
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73 void set_class_inner_classes(Array<u2>* x) { _inner_classes = x; } |
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74 void set_class_annotations(AnnotationArray* x) { _annotations = x; } |
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75 void set_class_type_annotations(AnnotationArray* x) { _type_annotations = x; } |
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76 void init_parsed_class_attributes() { |
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77 _synthetic_flag = false; |
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78 _sourcefile = NULL; |
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79 _generic_signature = NULL; |
6226 | 80 _sde_buffer = NULL; |
81 _sde_length = 0; | |
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82 _annotations = _type_annotations = NULL; |
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83 // initialize the other flags too: |
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84 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; |
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85 _max_bootstrap_specifier_index = -1; |
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86 } |
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87 void apply_parsed_class_attributes(instanceKlassHandle k); // update k |
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88 |
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89 class AnnotationCollector { |
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90 public: |
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91 enum Location { _in_field, _in_method, _in_class }; |
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92 enum ID { |
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93 _unknown = 0, |
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94 _method_ForceInline, |
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95 _method_DontInline, |
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96 _method_LambdaForm_Compiled, |
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97 _method_LambdaForm_Hidden, |
7587 | 98 _sun_misc_Contended, |
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99 _annotation_LIMIT |
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100 }; |
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101 const Location _location; |
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102 int _annotations_present; |
7587 | 103 u2 _contended_group; |
104 | |
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105 AnnotationCollector(Location location) |
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106 : _location(location), _annotations_present(0) |
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107 { |
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108 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, ""); |
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109 } |
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110 // If this annotation name has an ID, report it (or _none). |
7587 | 111 ID annotation_index(ClassLoaderData* loader_data, Symbol* name); |
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112 // Set the annotation name: |
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113 void set_annotation(ID id) { |
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114 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob"); |
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115 _annotations_present |= nth_bit((int)id); |
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116 } |
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117 // Report if the annotation is present. |
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118 bool has_any_annotations() { return _annotations_present != 0; } |
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119 bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; } |
7587 | 120 |
121 void set_contended_group(u2 group) { _contended_group = group; } | |
122 u2 contended_group() { return _contended_group; } | |
123 | |
124 void set_contended(bool contended) { set_annotation(_sun_misc_Contended); } | |
125 bool is_contended() { return has_annotation(_sun_misc_Contended); } | |
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126 }; |
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127 class FieldAnnotationCollector: public AnnotationCollector { |
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128 public: |
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129 FieldAnnotationCollector() : AnnotationCollector(_in_field) { } |
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130 void apply_to(FieldInfo* f); |
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131 }; |
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132 class MethodAnnotationCollector: public AnnotationCollector { |
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133 public: |
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134 MethodAnnotationCollector() : AnnotationCollector(_in_method) { } |
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135 void apply_to(methodHandle m); |
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136 }; |
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137 class ClassAnnotationCollector: public AnnotationCollector { |
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138 public: |
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139 ClassAnnotationCollector() : AnnotationCollector(_in_class) { } |
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140 void apply_to(instanceKlassHandle k); |
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141 }; |
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142 |
0 | 143 enum { fixed_buffer_size = 128 }; |
144 u_char linenumbertable_buffer[fixed_buffer_size]; | |
145 | |
146 ClassFileStream* _stream; // Actual input stream | |
147 | |
148 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names | |
149 | |
150 // Accessors | |
151 ClassFileStream* stream() { return _stream; } | |
152 void set_stream(ClassFileStream* st) { _stream = st; } | |
153 | |
154 // Constant pool parsing | |
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155 void parse_constant_pool_entries(ClassLoaderData* loader_data, |
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156 constantPoolHandle cp, int length, TRAPS); |
0 | 157 |
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158 constantPoolHandle parse_constant_pool(ClassLoaderData* loader_data, TRAPS); |
0 | 159 |
160 // Interface parsing | |
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161 Array<Klass*>* parse_interfaces(constantPoolHandle cp, |
0 | 162 int length, |
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163 ClassLoaderData* loader_data, |
0 | 164 Handle protection_domain, |
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165 Symbol* class_name, |
6934 | 166 bool* has_default_methods, |
0 | 167 TRAPS); |
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168 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS); |
0 | 169 |
170 // Field parsing | |
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171 void parse_field_attributes(ClassLoaderData* loader_data, |
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172 constantPoolHandle cp, u2 attributes_count, |
0 | 173 bool is_static, u2 signature_index, |
174 u2* constantvalue_index_addr, | |
175 bool* is_synthetic_addr, | |
176 u2* generic_signature_index_addr, | |
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177 AnnotationArray** field_annotations, |
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178 AnnotationArray** field_type_annotations, |
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179 FieldAnnotationCollector* parsed_annotations, |
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180 TRAPS); |
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181 Array<u2>* parse_fields(ClassLoaderData* loader_data, |
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182 Symbol* class_name, |
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183 constantPoolHandle cp, bool is_interface, |
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184 FieldAllocationCount *fac, |
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185 Array<AnnotationArray*>** fields_annotations, |
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186 Array<AnnotationArray*>** fields_type_annotations, |
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187 u2* java_fields_count_ptr, TRAPS); |
0 | 188 |
7587 | 189 void print_field_layout(Symbol* name, |
190 Array<u2>* fields, | |
191 constantPoolHandle cp, | |
192 int instance_size, | |
193 int instance_fields_start, | |
194 int instance_fields_end, | |
195 int static_fields_end); | |
196 | |
0 | 197 // Method parsing |
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198 methodHandle parse_method(ClassLoaderData* loader_data, |
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199 constantPoolHandle cp, |
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200 bool is_interface, |
0 | 201 AccessFlags* promoted_flags, |
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202 AnnotationArray** method_annotations, |
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203 AnnotationArray** method_parameter_annotations, |
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204 AnnotationArray** method_default_annotations, |
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205 AnnotationArray** method_type_annotations, |
0 | 206 TRAPS); |
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207 Array<Method*>* parse_methods(ClassLoaderData* loader_data, |
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208 constantPoolHandle cp, |
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209 bool is_interface, |
0 | 210 AccessFlags* promoted_flags, |
211 bool* has_final_method, | |
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212 Array<AnnotationArray*>** methods_annotations, |
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213 Array<AnnotationArray*>** methods_parameter_annotations, |
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214 Array<AnnotationArray*>** methods_default_annotations, |
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215 Array<AnnotationArray*>** methods_type_annotations, |
6934 | 216 bool* has_default_method, |
0 | 217 TRAPS); |
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218 Array<int>* sort_methods(ClassLoaderData* loader_data, |
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219 Array<Method*>* methods, |
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220 Array<AnnotationArray*>* methods_annotations, |
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221 Array<AnnotationArray*>* methods_parameter_annotations, |
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222 Array<AnnotationArray*>* methods_default_annotations, |
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223 Array<AnnotationArray*>* methods_type_annotations, |
0 | 224 TRAPS); |
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225 u2* parse_exception_table(ClassLoaderData* loader_data, |
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226 u4 code_length, u4 exception_table_length, |
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227 constantPoolHandle cp, TRAPS); |
0 | 228 void parse_linenumber_table( |
229 u4 code_attribute_length, u4 code_length, | |
230 CompressedLineNumberWriteStream** write_stream, TRAPS); | |
231 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, | |
232 constantPoolHandle cp, u2* localvariable_table_length, | |
233 bool isLVTT, TRAPS); | |
234 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, | |
235 constantPoolHandle cp, TRAPS); | |
236 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
237 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS); | |
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238 Array<u1>* parse_stackmap_table(ClassLoaderData* loader_data, u4 code_attribute_length, TRAPS); |
0 | 239 |
240 // Classfile attribute parsing | |
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241 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS); |
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242 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, |
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243 int length, TRAPS); |
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244 u2 parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
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245 u1* inner_classes_attribute_start, |
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246 bool parsed_enclosingmethod_attribute, |
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247 u2 enclosing_method_class_index, |
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248 u2 enclosing_method_method_index, |
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249 constantPoolHandle cp, |
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250 TRAPS); |
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251 void parse_classfile_attributes(ClassLoaderData* loader_data, |
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252 constantPoolHandle cp, |
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253 ClassAnnotationCollector* parsed_annotations, |
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254 TRAPS); |
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255 void parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS); |
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256 void parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS); |
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257 void parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, constantPoolHandle cp, u4 attribute_length, TRAPS); |
0 | 258 |
259 // Annotations handling | |
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260 AnnotationArray* assemble_annotations(ClassLoaderData* loader_data, |
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261 u1* runtime_visible_annotations, |
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262 int runtime_visible_annotations_length, |
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263 u1* runtime_invisible_annotations, |
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264 int runtime_invisible_annotations_length, TRAPS); |
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265 int skip_annotation(u1* buffer, int limit, int index); |
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266 int skip_annotation_value(u1* buffer, int limit, int index); |
7587 | 267 void parse_annotations(ClassLoaderData* loader_data, |
268 u1* buffer, int limit, constantPoolHandle cp, | |
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269 /* Results (currently, only one result is supported): */ |
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270 AnnotationCollector* result, |
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271 TRAPS); |
0 | 272 |
273 // Final setup | |
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274 unsigned int compute_oop_map_count(instanceKlassHandle super, |
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275 unsigned int nonstatic_oop_count, |
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276 int first_nonstatic_oop_offset); |
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277 void fill_oop_maps(instanceKlassHandle k, |
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278 unsigned int nonstatic_oop_map_count, |
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279 int* nonstatic_oop_offsets, |
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280 unsigned int* nonstatic_oop_counts); |
0 | 281 void set_precomputed_flags(instanceKlassHandle k); |
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282 Array<Klass*>* compute_transitive_interfaces(ClassLoaderData* loader_data, |
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283 instanceKlassHandle super, |
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284 Array<Klass*>* local_ifs, TRAPS); |
0 | 285 |
286 // Format checker methods | |
287 void classfile_parse_error(const char* msg, TRAPS); | |
288 void classfile_parse_error(const char* msg, int index, TRAPS); | |
289 void classfile_parse_error(const char* msg, const char *name, TRAPS); | |
290 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); | |
291 inline void guarantee_property(bool b, const char* msg, TRAPS) { | |
292 if (!b) { classfile_parse_error(msg, CHECK); } | |
293 } | |
294 | |
295 inline void assert_property(bool b, const char* msg, TRAPS) { | |
296 #ifdef ASSERT | |
297 if (!b) { fatal(msg); } | |
298 #endif | |
299 } | |
300 | |
301 inline void check_property(bool property, const char* msg, int index, TRAPS) { | |
302 if (_need_verify) { | |
303 guarantee_property(property, msg, index, CHECK); | |
304 } else { | |
305 assert_property(property, msg, CHECK); | |
306 } | |
307 } | |
308 | |
309 inline void check_property(bool property, const char* msg, TRAPS) { | |
310 if (_need_verify) { | |
311 guarantee_property(property, msg, CHECK); | |
312 } else { | |
313 assert_property(property, msg, CHECK); | |
314 } | |
315 } | |
316 | |
317 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { | |
318 if (!b) { classfile_parse_error(msg, index, CHECK); } | |
319 } | |
320 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { | |
321 if (!b) { classfile_parse_error(msg, name, CHECK); } | |
322 } | |
323 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { | |
324 if (!b) { classfile_parse_error(msg, index, name, CHECK); } | |
325 } | |
326 | |
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327 void throwIllegalSignature( |
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328 const char* type, Symbol* name, Symbol* sig, TRAPS); |
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329 |
0 | 330 bool is_supported_version(u2 major, u2 minor); |
331 bool has_illegal_visibility(jint flags); | |
332 | |
333 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS); | |
334 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); | |
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335 void verify_legal_class_name(Symbol* name, TRAPS); |
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336 void verify_legal_field_name(Symbol* name, TRAPS); |
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337 void verify_legal_method_name(Symbol* name, TRAPS); |
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338 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS); |
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339 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS); |
0 | 340 void verify_legal_class_modifiers(jint flags, TRAPS); |
341 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); | |
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342 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS); |
0 | 343 bool verify_unqualified_name(char* name, unsigned int length, int type); |
344 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); | |
345 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); | |
346 | |
710 | 347 bool is_anonymous() { |
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348 assert(EnableInvokeDynamic || _host_klass.is_null(), ""); |
710 | 349 return _host_klass.not_null(); |
350 } | |
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351 bool has_cp_patch_at(int index) { |
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352 assert(EnableInvokeDynamic, ""); |
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353 assert(index >= 0, "oob"); |
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354 return (_cp_patches != NULL |
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355 && index < _cp_patches->length() |
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356 && _cp_patches->adr_at(index)->not_null()); |
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357 } |
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358 Handle cp_patch_at(int index) { |
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359 assert(has_cp_patch_at(index), "oob"); |
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360 return _cp_patches->at(index); |
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361 } |
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362 Handle clear_cp_patch_at(int index) { |
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363 Handle patch = cp_patch_at(index); |
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364 _cp_patches->at_put(index, Handle()); |
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365 assert(!has_cp_patch_at(index), ""); |
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366 return patch; |
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367 } |
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368 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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369 |
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370 // Wrapper for constantTag.is_klass_[or_]reference. |
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371 // In older versions of the VM, Klass*s cannot sneak into early phases of |
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372 // constant pool construction, but in later versions they can. |
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373 // %%% Let's phase out the old is_klass_reference. |
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374 bool is_klass_reference(constantPoolHandle cp, int index) { |
6852 | 375 return (EnableInvokeDynamic |
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376 ? cp->tag_at(index).is_klass_or_reference() |
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377 : cp->tag_at(index).is_klass_reference()); |
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378 } |
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379 |
0 | 380 public: |
381 // Constructor | |
382 ClassFileParser(ClassFileStream* st) { set_stream(st); } | |
383 | |
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384 // Parse .class file and return new Klass*. The Klass* is not hooked up |
0 | 385 // to the system dictionary or any other structures, so a .class file can |
386 // be loaded several times if desired. | |
387 // The system dictionary hookup is done by the caller. | |
388 // | |
389 // "parsed_name" is updated by this method, and is the name found | |
390 // while parsing the stream. | |
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391 instanceKlassHandle parseClassFile(Symbol* name, |
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392 ClassLoaderData* loader_data, |
0 | 393 Handle protection_domain, |
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394 TempNewSymbol& parsed_name, |
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395 bool verify, |
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396 TRAPS) { |
710 | 397 KlassHandle no_host_klass; |
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398 return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD); |
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399 } |
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400 instanceKlassHandle parseClassFile(Symbol* name, |
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401 ClassLoaderData* loader_data, |
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402 Handle protection_domain, |
710 | 403 KlassHandle host_klass, |
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404 GrowableArray<Handle>* cp_patches, |
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405 TempNewSymbol& parsed_name, |
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406 bool verify, |
0 | 407 TRAPS); |
408 | |
409 // Verifier checks | |
410 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); | |
411 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); | |
412 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); | |
413 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); | |
414 }; | |
1972 | 415 |
416 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |