Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/classFileParser.hpp @ 6885:685df3c6f84b
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Reviewed-by: coleenp, stefank, jprovino, ohair
author | jmasa |
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date | Tue, 18 Sep 2012 23:35:42 -0700 |
parents | d804e148cff8 |
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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 |
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68 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; } |
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69 void set_class_sourcefile(Symbol* x) { _sourcefile = x; } |
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70 void set_class_generic_signature(Symbol* x) { _generic_signature = x; } |
6226 | 71 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; } |
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72 void set_class_inner_classes(Array<u2>* x) { _inner_classes = x; } |
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73 void set_class_annotations(AnnotationArray* x) { _annotations = x; } |
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74 void init_parsed_class_attributes() { |
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75 _synthetic_flag = false; |
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76 _sourcefile = NULL; |
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77 _generic_signature = NULL; |
6226 | 78 _sde_buffer = NULL; |
79 _sde_length = 0; | |
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80 // initialize the other flags too: |
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81 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; |
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82 _max_bootstrap_specifier_index = -1; |
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83 } |
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84 void apply_parsed_class_attributes(instanceKlassHandle k); // update k |
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85 |
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86 class AnnotationCollector { |
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87 public: |
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88 enum Location { _in_field, _in_method, _in_class }; |
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89 enum ID { |
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90 _unknown = 0, |
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91 _method_ForceInline, |
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92 _method_DontInline, |
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93 _method_LambdaForm_Compiled, |
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94 _method_LambdaForm_Hidden, |
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95 _annotation_LIMIT |
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96 }; |
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97 const Location _location; |
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98 int _annotations_present; |
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99 AnnotationCollector(Location location) |
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100 : _location(location), _annotations_present(0) |
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101 { |
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102 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, ""); |
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103 } |
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104 // If this annotation name has an ID, report it (or _none). |
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105 ID annotation_index(Symbol* name); |
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106 // Set the annotation name: |
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107 void set_annotation(ID id) { |
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108 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob"); |
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109 _annotations_present |= nth_bit((int)id); |
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110 } |
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111 // Report if the annotation is present. |
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112 bool has_any_annotations() { return _annotations_present != 0; } |
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113 bool has_annotation(ID id) { return (nth_bit((int)id) & _annotations_present) != 0; } |
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114 }; |
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115 class FieldAnnotationCollector: public AnnotationCollector { |
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116 public: |
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117 FieldAnnotationCollector() : AnnotationCollector(_in_field) { } |
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118 void apply_to(FieldInfo* f); |
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119 }; |
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120 class MethodAnnotationCollector: public AnnotationCollector { |
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121 public: |
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122 MethodAnnotationCollector() : AnnotationCollector(_in_method) { } |
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123 void apply_to(methodHandle m); |
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124 }; |
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125 class ClassAnnotationCollector: public AnnotationCollector { |
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126 public: |
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127 ClassAnnotationCollector() : AnnotationCollector(_in_class) { } |
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128 void apply_to(instanceKlassHandle k); |
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129 }; |
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130 |
0 | 131 enum { fixed_buffer_size = 128 }; |
132 u_char linenumbertable_buffer[fixed_buffer_size]; | |
133 | |
134 ClassFileStream* _stream; // Actual input stream | |
135 | |
136 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names | |
137 | |
138 // Accessors | |
139 ClassFileStream* stream() { return _stream; } | |
140 void set_stream(ClassFileStream* st) { _stream = st; } | |
141 | |
142 // Constant pool parsing | |
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143 void parse_constant_pool_entries(ClassLoaderData* loader_data, |
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144 constantPoolHandle cp, int length, TRAPS); |
0 | 145 |
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146 constantPoolHandle parse_constant_pool(ClassLoaderData* loader_data, TRAPS); |
0 | 147 |
148 // Interface parsing | |
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149 Array<Klass*>* parse_interfaces(constantPoolHandle cp, |
0 | 150 int length, |
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151 ClassLoaderData* loader_data, |
0 | 152 Handle protection_domain, |
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153 Symbol* class_name, |
0 | 154 TRAPS); |
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155 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS); |
0 | 156 |
157 // Field parsing | |
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158 void parse_field_attributes(ClassLoaderData* loader_data, |
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159 constantPoolHandle cp, u2 attributes_count, |
0 | 160 bool is_static, u2 signature_index, |
161 u2* constantvalue_index_addr, | |
162 bool* is_synthetic_addr, | |
163 u2* generic_signature_index_addr, | |
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164 AnnotationArray** field_annotations, |
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165 FieldAnnotationCollector* parsed_annotations, |
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166 TRAPS); |
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167 Array<u2>* parse_fields(ClassLoaderData* loader_data, |
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168 Symbol* class_name, |
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169 constantPoolHandle cp, bool is_interface, |
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170 FieldAllocationCount *fac, |
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171 Array<AnnotationArray*>** fields_annotations, |
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172 u2* java_fields_count_ptr, TRAPS); |
0 | 173 |
174 // Method parsing | |
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175 methodHandle parse_method(ClassLoaderData* loader_data, |
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176 constantPoolHandle cp, |
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177 bool is_interface, |
0 | 178 AccessFlags* promoted_flags, |
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179 AnnotationArray** method_annotations, |
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180 AnnotationArray** method_parameter_annotations, |
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181 AnnotationArray** method_default_annotations, |
0 | 182 TRAPS); |
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183 Array<Method*>* parse_methods(ClassLoaderData* loader_data, |
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184 constantPoolHandle cp, |
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185 bool is_interface, |
0 | 186 AccessFlags* promoted_flags, |
187 bool* has_final_method, | |
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188 Array<AnnotationArray*>** methods_annotations, |
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189 Array<AnnotationArray*>** methods_parameter_annotations, |
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190 Array<AnnotationArray*>** methods_default_annotations, |
0 | 191 TRAPS); |
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192 Array<int>* sort_methods(ClassLoaderData* loader_data, |
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193 Array<Method*>* methods, |
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194 Array<AnnotationArray*>* methods_annotations, |
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195 Array<AnnotationArray*>* methods_parameter_annotations, |
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196 Array<AnnotationArray*>* methods_default_annotations, |
0 | 197 TRAPS); |
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198 u2* parse_exception_table(ClassLoaderData* loader_data, |
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199 u4 code_length, u4 exception_table_length, |
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200 constantPoolHandle cp, TRAPS); |
0 | 201 void parse_linenumber_table( |
202 u4 code_attribute_length, u4 code_length, | |
203 CompressedLineNumberWriteStream** write_stream, TRAPS); | |
204 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, | |
205 constantPoolHandle cp, u2* localvariable_table_length, | |
206 bool isLVTT, TRAPS); | |
207 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, | |
208 constantPoolHandle cp, TRAPS); | |
209 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, | |
210 u1* u1_array, u2* u2_array, constantPoolHandle cp, TRAPS); | |
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211 Array<u1>* parse_stackmap_table(ClassLoaderData* loader_data, u4 code_attribute_length, TRAPS); |
0 | 212 |
213 // Classfile attribute parsing | |
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214 void parse_classfile_sourcefile_attribute(constantPoolHandle cp, TRAPS); |
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215 void parse_classfile_source_debug_extension_attribute(constantPoolHandle cp, |
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216 int length, TRAPS); |
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217 u2 parse_classfile_inner_classes_attribute(ClassLoaderData* loader_data, |
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218 u1* inner_classes_attribute_start, |
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219 bool parsed_enclosingmethod_attribute, |
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220 u2 enclosing_method_class_index, |
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221 u2 enclosing_method_method_index, |
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222 constantPoolHandle cp, |
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223 TRAPS); |
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224 void parse_classfile_attributes(ClassLoaderData* loader_data, |
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225 constantPoolHandle cp, |
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226 ClassAnnotationCollector* parsed_annotations, |
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227 TRAPS); |
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228 void parse_classfile_synthetic_attribute(constantPoolHandle cp, TRAPS); |
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229 void parse_classfile_signature_attribute(constantPoolHandle cp, TRAPS); |
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230 void parse_classfile_bootstrap_methods_attribute(ClassLoaderData* loader_data, constantPoolHandle cp, u4 attribute_length, TRAPS); |
0 | 231 |
232 // Annotations handling | |
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233 AnnotationArray* assemble_annotations(ClassLoaderData* loader_data, |
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234 u1* runtime_visible_annotations, |
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235 int runtime_visible_annotations_length, |
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236 u1* runtime_invisible_annotations, |
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237 int runtime_invisible_annotations_length, TRAPS); |
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238 int skip_annotation(u1* buffer, int limit, int index); |
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239 int skip_annotation_value(u1* buffer, int limit, int index); |
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240 void parse_annotations(u1* buffer, int limit, constantPoolHandle cp, |
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241 /* Results (currently, only one result is supported): */ |
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242 AnnotationCollector* result, |
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243 TRAPS); |
0 | 244 |
245 // Final setup | |
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246 unsigned int compute_oop_map_count(instanceKlassHandle super, |
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247 unsigned int nonstatic_oop_count, |
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248 int first_nonstatic_oop_offset); |
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249 void fill_oop_maps(instanceKlassHandle k, |
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250 unsigned int nonstatic_oop_map_count, |
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251 int* nonstatic_oop_offsets, |
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252 unsigned int* nonstatic_oop_counts); |
0 | 253 void set_precomputed_flags(instanceKlassHandle k); |
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254 Array<Klass*>* compute_transitive_interfaces(ClassLoaderData* loader_data, |
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255 instanceKlassHandle super, |
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256 Array<Klass*>* local_ifs, TRAPS); |
0 | 257 |
258 // Format checker methods | |
259 void classfile_parse_error(const char* msg, TRAPS); | |
260 void classfile_parse_error(const char* msg, int index, TRAPS); | |
261 void classfile_parse_error(const char* msg, const char *name, TRAPS); | |
262 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); | |
263 inline void guarantee_property(bool b, const char* msg, TRAPS) { | |
264 if (!b) { classfile_parse_error(msg, CHECK); } | |
265 } | |
266 | |
267 inline void assert_property(bool b, const char* msg, TRAPS) { | |
268 #ifdef ASSERT | |
269 if (!b) { fatal(msg); } | |
270 #endif | |
271 } | |
272 | |
273 inline void check_property(bool property, const char* msg, int index, TRAPS) { | |
274 if (_need_verify) { | |
275 guarantee_property(property, msg, index, CHECK); | |
276 } else { | |
277 assert_property(property, msg, CHECK); | |
278 } | |
279 } | |
280 | |
281 inline void check_property(bool property, const char* msg, TRAPS) { | |
282 if (_need_verify) { | |
283 guarantee_property(property, msg, CHECK); | |
284 } else { | |
285 assert_property(property, msg, CHECK); | |
286 } | |
287 } | |
288 | |
289 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { | |
290 if (!b) { classfile_parse_error(msg, index, CHECK); } | |
291 } | |
292 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { | |
293 if (!b) { classfile_parse_error(msg, name, CHECK); } | |
294 } | |
295 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { | |
296 if (!b) { classfile_parse_error(msg, index, name, CHECK); } | |
297 } | |
298 | |
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299 void throwIllegalSignature( |
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300 const char* type, Symbol* name, Symbol* sig, TRAPS); |
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301 |
0 | 302 bool is_supported_version(u2 major, u2 minor); |
303 bool has_illegal_visibility(jint flags); | |
304 | |
305 void verify_constantvalue(int constantvalue_index, int signature_index, constantPoolHandle cp, TRAPS); | |
306 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); | |
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307 void verify_legal_class_name(Symbol* name, TRAPS); |
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308 void verify_legal_field_name(Symbol* name, TRAPS); |
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309 void verify_legal_method_name(Symbol* name, TRAPS); |
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310 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS); |
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311 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS); |
0 | 312 void verify_legal_class_modifiers(jint flags, TRAPS); |
313 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); | |
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314 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS); |
0 | 315 bool verify_unqualified_name(char* name, unsigned int length, int type); |
316 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); | |
317 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); | |
318 | |
710 | 319 bool is_anonymous() { |
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320 assert(EnableInvokeDynamic || _host_klass.is_null(), ""); |
710 | 321 return _host_klass.not_null(); |
322 } | |
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323 bool has_cp_patch_at(int index) { |
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324 assert(EnableInvokeDynamic, ""); |
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325 assert(index >= 0, "oob"); |
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326 return (_cp_patches != NULL |
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327 && index < _cp_patches->length() |
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328 && _cp_patches->adr_at(index)->not_null()); |
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329 } |
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330 Handle cp_patch_at(int index) { |
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331 assert(has_cp_patch_at(index), "oob"); |
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332 return _cp_patches->at(index); |
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333 } |
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334 Handle clear_cp_patch_at(int index) { |
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335 Handle patch = cp_patch_at(index); |
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336 _cp_patches->at_put(index, Handle()); |
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337 assert(!has_cp_patch_at(index), ""); |
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338 return patch; |
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339 } |
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340 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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341 |
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342 // Wrapper for constantTag.is_klass_[or_]reference. |
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343 // In older versions of the VM, Klass*s cannot sneak into early phases of |
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344 // constant pool construction, but in later versions they can. |
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345 // %%% Let's phase out the old is_klass_reference. |
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346 bool is_klass_reference(constantPoolHandle cp, int index) { |
6852 | 347 return (EnableInvokeDynamic |
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348 ? cp->tag_at(index).is_klass_or_reference() |
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349 : cp->tag_at(index).is_klass_reference()); |
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350 } |
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351 |
0 | 352 public: |
353 // Constructor | |
354 ClassFileParser(ClassFileStream* st) { set_stream(st); } | |
355 | |
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356 // Parse .class file and return new Klass*. The Klass* is not hooked up |
0 | 357 // to the system dictionary or any other structures, so a .class file can |
358 // be loaded several times if desired. | |
359 // The system dictionary hookup is done by the caller. | |
360 // | |
361 // "parsed_name" is updated by this method, and is the name found | |
362 // while parsing the stream. | |
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363 instanceKlassHandle parseClassFile(Symbol* name, |
0 | 364 Handle class_loader, |
365 Handle protection_domain, | |
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366 TempNewSymbol& parsed_name, |
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367 bool verify, |
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368 TRAPS) { |
710 | 369 KlassHandle no_host_klass; |
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370 return parseClassFile(name, class_loader, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD); |
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371 } |
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372 instanceKlassHandle parseClassFile(Symbol* name, |
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373 Handle class_loader, |
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374 Handle protection_domain, |
710 | 375 KlassHandle host_klass, |
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376 GrowableArray<Handle>* cp_patches, |
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377 TempNewSymbol& parsed_name, |
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378 bool verify, |
0 | 379 TRAPS); |
380 | |
381 // Verifier checks | |
382 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); | |
383 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); | |
384 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); | |
385 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); | |
386 }; | |
1972 | 387 |
388 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |