Mercurial > hg > truffle
annotate src/share/vm/classfile/classFileParser.hpp @ 21194:5557f74bfd30
MoveResolver: improve assertion.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Wed, 22 Apr 2015 14:17:11 +0200 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 u2 _sourcefile_index; |
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66 u2 _generic_signature_index; |
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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 Annotations* _combined_annotations; |
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79 AnnotationArray* _annotations; |
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80 AnnotationArray* _type_annotations; |
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81 Array<AnnotationArray*>* _fields_annotations; |
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82 Array<AnnotationArray*>* _fields_type_annotations; |
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83 InstanceKlass* _klass; // InstanceKlass once created. |
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84 |
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85 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; } |
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86 void set_class_sourcefile_index(u2 x) { _sourcefile_index = x; } |
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87 void set_class_generic_signature_index(u2 x) { _generic_signature_index = x; } |
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88 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; } |
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89 |
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90 void create_combined_annotations(TRAPS); |
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91 |
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92 void init_parsed_class_attributes(ClassLoaderData* loader_data) { |
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93 _loader_data = loader_data; |
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94 _synthetic_flag = false; |
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95 _sourcefile_index = 0; |
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96 _generic_signature_index = 0; |
6226 | 97 _sde_buffer = NULL; |
98 _sde_length = 0; | |
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99 // initialize the other flags too: |
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100 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; |
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101 _max_bootstrap_specifier_index = -1; |
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102 clear_class_metadata(); |
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103 _klass = NULL; |
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104 } |
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105 void apply_parsed_class_attributes(instanceKlassHandle k); // update k |
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106 void apply_parsed_class_metadata(instanceKlassHandle k, int fields_count, TRAPS); |
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107 void clear_class_metadata() { |
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108 // metadata created before the instance klass is created. Must be |
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109 // deallocated if classfile parsing returns an error. |
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110 _cp = NULL; |
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111 _fields = NULL; |
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112 _methods = NULL; |
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113 _inner_classes = NULL; |
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114 _local_interfaces = NULL; |
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115 _transitive_interfaces = NULL; |
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116 _combined_annotations = NULL; |
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117 _annotations = _type_annotations = NULL; |
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118 _fields_annotations = _fields_type_annotations = NULL; |
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119 } |
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120 |
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121 class AnnotationCollector { |
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122 public: |
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123 enum Location { _in_field, _in_method, _in_class }; |
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124 enum ID { |
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125 _unknown = 0, |
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126 _method_CallerSensitive, |
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127 _method_ForceInline, |
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128 _method_DontInline, |
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129 _method_LambdaForm_Compiled, |
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130 _method_LambdaForm_Hidden, |
7587 | 131 _sun_misc_Contended, |
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132 _field_Stable, |
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133 _annotation_LIMIT |
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134 }; |
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135 const Location _location; |
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136 int _annotations_present; |
7587 | 137 u2 _contended_group; |
138 | |
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139 AnnotationCollector(Location location) |
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140 : _location(location), _annotations_present(0) |
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141 { |
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142 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, ""); |
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143 } |
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144 // If this annotation name has an ID, report it (or _none). |
7587 | 145 ID annotation_index(ClassLoaderData* loader_data, Symbol* name); |
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146 // Set the annotation name: |
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147 void set_annotation(ID id) { |
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148 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob"); |
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149 _annotations_present |= nth_bit((int)id); |
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150 } |
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151 |
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152 void remove_annotation(ID id) { |
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153 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob"); |
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154 _annotations_present &= ~nth_bit((int)id); |
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155 } |
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156 |
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157 // Report if the annotation is present. |
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158 bool has_any_annotations() const { return _annotations_present != 0; } |
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159 bool has_annotation(ID id) const { return (nth_bit((int)id) & _annotations_present) != 0; } |
7587 | 160 |
161 void set_contended_group(u2 group) { _contended_group = group; } | |
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162 u2 contended_group() const { return _contended_group; } |
7587 | 163 |
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164 bool is_contended() const { return has_annotation(_sun_misc_Contended); } |
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165 |
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166 void set_stable(bool stable) { set_annotation(_field_Stable); } |
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167 bool is_stable() const { return has_annotation(_field_Stable); } |
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168 }; |
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169 |
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170 // This class also doubles as a holder for metadata cleanup. |
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171 class FieldAnnotationCollector: public AnnotationCollector { |
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172 ClassLoaderData* _loader_data; |
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173 AnnotationArray* _field_annotations; |
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174 AnnotationArray* _field_type_annotations; |
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175 public: |
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176 FieldAnnotationCollector(ClassLoaderData* loader_data) : |
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177 AnnotationCollector(_in_field), |
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178 _loader_data(loader_data), |
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179 _field_annotations(NULL), |
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180 _field_type_annotations(NULL) {} |
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181 void apply_to(FieldInfo* f); |
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182 ~FieldAnnotationCollector(); |
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183 AnnotationArray* field_annotations() { return _field_annotations; } |
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184 AnnotationArray* field_type_annotations() { return _field_type_annotations; } |
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185 |
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186 void set_field_annotations(AnnotationArray* a) { _field_annotations = a; } |
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187 void set_field_type_annotations(AnnotationArray* a) { _field_type_annotations = a; } |
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188 }; |
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189 |
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190 class MethodAnnotationCollector: public AnnotationCollector { |
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191 public: |
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192 MethodAnnotationCollector() : AnnotationCollector(_in_method) { } |
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193 void apply_to(methodHandle m); |
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194 }; |
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195 class ClassAnnotationCollector: public AnnotationCollector { |
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196 public: |
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197 ClassAnnotationCollector() : AnnotationCollector(_in_class) { } |
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198 void apply_to(instanceKlassHandle k); |
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199 }; |
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200 |
0 | 201 enum { fixed_buffer_size = 128 }; |
202 u_char linenumbertable_buffer[fixed_buffer_size]; | |
203 | |
204 ClassFileStream* _stream; // Actual input stream | |
205 | |
206 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names | |
207 | |
208 // Accessors | |
209 ClassFileStream* stream() { return _stream; } | |
210 void set_stream(ClassFileStream* st) { _stream = st; } | |
211 | |
212 // Constant pool parsing | |
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213 void parse_constant_pool_entries(int length, TRAPS); |
0 | 214 |
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215 constantPoolHandle parse_constant_pool(TRAPS); |
0 | 216 |
217 // Interface parsing | |
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218 Array<Klass*>* parse_interfaces(int length, |
0 | 219 Handle protection_domain, |
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220 Symbol* class_name, |
6934 | 221 bool* has_default_methods, |
0 | 222 TRAPS); |
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223 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS); |
0 | 224 |
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225 instanceKlassHandle parse_super_class(int super_class_index, TRAPS); |
0 | 226 // Field parsing |
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227 void parse_field_attributes(u2 attributes_count, |
0 | 228 bool is_static, u2 signature_index, |
229 u2* constantvalue_index_addr, | |
230 bool* is_synthetic_addr, | |
231 u2* generic_signature_index_addr, | |
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232 FieldAnnotationCollector* parsed_annotations, |
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233 TRAPS); |
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234 Array<u2>* parse_fields(Symbol* class_name, |
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235 bool is_interface, |
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236 FieldAllocationCount *fac, |
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237 u2* java_fields_count_ptr, TRAPS); |
0 | 238 |
7587 | 239 void print_field_layout(Symbol* name, |
240 Array<u2>* fields, | |
241 constantPoolHandle cp, | |
242 int instance_size, | |
243 int instance_fields_start, | |
244 int instance_fields_end, | |
245 int static_fields_end); | |
246 | |
0 | 247 // Method parsing |
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248 methodHandle parse_method(bool is_interface, |
0 | 249 AccessFlags* promoted_flags, |
250 TRAPS); | |
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251 Array<Method*>* parse_methods(bool is_interface, |
0 | 252 AccessFlags* promoted_flags, |
253 bool* has_final_method, | |
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254 bool* declares_default_methods, |
0 | 255 TRAPS); |
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256 intArray* sort_methods(Array<Method*>* methods); |
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257 |
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258 u2* parse_exception_table(u4 code_length, u4 exception_table_length, |
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259 TRAPS); |
0 | 260 void parse_linenumber_table( |
261 u4 code_attribute_length, u4 code_length, | |
262 CompressedLineNumberWriteStream** write_stream, TRAPS); | |
263 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length, | |
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264 u2* localvariable_table_length, |
0 | 265 bool isLVTT, TRAPS); |
266 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length, | |
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267 TRAPS); |
0 | 268 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index, |
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269 u1* u1_array, u2* u2_array, TRAPS); |
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270 u1* parse_stackmap_table(u4 code_attribute_length, TRAPS); |
0 | 271 |
272 // Classfile attribute parsing | |
17577 | 273 u2 parse_generic_signature_attribute(TRAPS); |
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274 void parse_classfile_sourcefile_attribute(TRAPS); |
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275 void parse_classfile_source_debug_extension_attribute(int length, TRAPS); |
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276 u2 parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start, |
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277 bool parsed_enclosingmethod_attribute, |
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278 u2 enclosing_method_class_index, |
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279 u2 enclosing_method_method_index, |
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280 TRAPS); |
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281 void parse_classfile_attributes(ClassAnnotationCollector* parsed_annotations, |
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282 TRAPS); |
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283 void parse_classfile_synthetic_attribute(TRAPS); |
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284 void parse_classfile_signature_attribute(TRAPS); |
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285 void parse_classfile_bootstrap_methods_attribute(u4 attribute_length, TRAPS); |
0 | 286 |
287 // Annotations handling | |
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288 AnnotationArray* assemble_annotations(u1* runtime_visible_annotations, |
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289 int runtime_visible_annotations_length, |
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290 u1* runtime_invisible_annotations, |
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291 int runtime_invisible_annotations_length, TRAPS); |
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292 int skip_annotation(u1* buffer, int limit, int index); |
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293 int skip_annotation_value(u1* buffer, int limit, int index); |
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294 void parse_annotations(u1* buffer, int limit, |
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295 /* Results (currently, only one result is supported): */ |
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296 AnnotationCollector* result, |
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297 TRAPS); |
0 | 298 |
299 // Final setup | |
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300 unsigned int compute_oop_map_count(instanceKlassHandle super, |
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301 unsigned int nonstatic_oop_count, |
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302 int first_nonstatic_oop_offset); |
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303 void fill_oop_maps(instanceKlassHandle k, |
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304 unsigned int nonstatic_oop_map_count, |
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305 int* nonstatic_oop_offsets, |
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306 unsigned int* nonstatic_oop_counts); |
0 | 307 void set_precomputed_flags(instanceKlassHandle k); |
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308 Array<Klass*>* compute_transitive_interfaces(instanceKlassHandle super, |
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309 Array<Klass*>* local_ifs, TRAPS); |
0 | 310 |
311 // Format checker methods | |
312 void classfile_parse_error(const char* msg, TRAPS); | |
313 void classfile_parse_error(const char* msg, int index, TRAPS); | |
314 void classfile_parse_error(const char* msg, const char *name, TRAPS); | |
315 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS); | |
316 inline void guarantee_property(bool b, const char* msg, TRAPS) { | |
317 if (!b) { classfile_parse_error(msg, CHECK); } | |
318 } | |
319 | |
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320 PRAGMA_DIAG_PUSH |
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321 PRAGMA_FORMAT_NONLITERAL_IGNORED |
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322 inline void assert_property(bool b, const char* msg, TRAPS) { |
0 | 323 #ifdef ASSERT |
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324 if (!b) { |
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325 ResourceMark rm(THREAD); |
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326 fatal(err_msg(msg, _class_name->as_C_string())); |
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327 } |
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328 #endif |
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329 } |
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330 |
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331 inline void assert_property(bool b, const char* msg, int index, TRAPS) { |
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332 #ifdef ASSERT |
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333 if (!b) { |
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334 ResourceMark rm(THREAD); |
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335 fatal(err_msg(msg, index, _class_name->as_C_string())); |
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336 } |
0 | 337 #endif |
338 } | |
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339 PRAGMA_DIAG_POP |
0 | 340 |
341 inline void check_property(bool property, const char* msg, int index, TRAPS) { | |
342 if (_need_verify) { | |
343 guarantee_property(property, msg, index, CHECK); | |
344 } else { | |
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345 assert_property(property, msg, index, CHECK); |
0 | 346 } |
347 } | |
348 | |
349 inline void check_property(bool property, const char* msg, TRAPS) { | |
350 if (_need_verify) { | |
351 guarantee_property(property, msg, CHECK); | |
352 } else { | |
353 assert_property(property, msg, CHECK); | |
354 } | |
355 } | |
356 | |
357 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) { | |
358 if (!b) { classfile_parse_error(msg, index, CHECK); } | |
359 } | |
360 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) { | |
361 if (!b) { classfile_parse_error(msg, name, CHECK); } | |
362 } | |
363 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) { | |
364 if (!b) { classfile_parse_error(msg, index, name, CHECK); } | |
365 } | |
366 | |
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367 void throwIllegalSignature( |
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368 const char* type, Symbol* name, Symbol* sig, TRAPS); |
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369 |
0 | 370 bool is_supported_version(u2 major, u2 minor); |
371 bool has_illegal_visibility(jint flags); | |
372 | |
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373 void verify_constantvalue(int constantvalue_index, int signature_index, TRAPS); |
0 | 374 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS); |
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375 void verify_legal_class_name(Symbol* name, TRAPS); |
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376 void verify_legal_field_name(Symbol* name, TRAPS); |
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377 void verify_legal_method_name(Symbol* name, TRAPS); |
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378 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS); |
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379 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS); |
0 | 380 void verify_legal_class_modifiers(jint flags, TRAPS); |
381 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS); | |
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382 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS); |
0 | 383 bool verify_unqualified_name(char* name, unsigned int length, int type); |
384 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length); | |
385 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS); | |
386 | |
710 | 387 bool is_anonymous() { |
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388 assert(EnableInvokeDynamic || _host_klass.is_null(), ""); |
710 | 389 return _host_klass.not_null(); |
390 } | |
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391 bool has_cp_patch_at(int index) { |
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392 assert(EnableInvokeDynamic, ""); |
431
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393 assert(index >= 0, "oob"); |
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394 return (_cp_patches != NULL |
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395 && index < _cp_patches->length() |
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396 && _cp_patches->adr_at(index)->not_null()); |
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397 } |
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398 Handle cp_patch_at(int index) { |
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399 assert(has_cp_patch_at(index), "oob"); |
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400 return _cp_patches->at(index); |
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401 } |
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402 Handle clear_cp_patch_at(int index) { |
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403 Handle patch = cp_patch_at(index); |
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404 _cp_patches->at_put(index, Handle()); |
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405 assert(!has_cp_patch_at(index), ""); |
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406 return patch; |
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407 } |
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408 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS); |
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409 |
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410 // Wrapper for constantTag.is_klass_[or_]reference. |
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411 // In older versions of the VM, Klass*s cannot sneak into early phases of |
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412 // constant pool construction, but in later versions they can. |
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413 // %%% Let's phase out the old is_klass_reference. |
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414 bool valid_klass_reference_at(int index) { |
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415 return _cp->is_within_bounds(index) && |
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416 (EnableInvokeDynamic |
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417 ? _cp->tag_at(index).is_klass_or_reference() |
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418 : _cp->tag_at(index).is_klass_reference()); |
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419 } |
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420 |
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421 // Checks that the cpool index is in range and is a utf8 |
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422 bool valid_symbol_at(int cpool_index) { |
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423 return (_cp->is_within_bounds(cpool_index) && |
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424 _cp->tag_at(cpool_index).is_utf8()); |
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425 } |
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426 |
8031 | 427 void copy_localvariable_table(ConstMethod* cm, int lvt_cnt, |
428 u2* localvariable_table_length, | |
429 u2** localvariable_table_start, | |
430 int lvtt_cnt, | |
431 u2* localvariable_type_table_length, | |
432 u2** localvariable_type_table_start, | |
433 TRAPS); | |
434 | |
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435 void copy_method_annotations(ConstMethod* cm, |
8031 | 436 u1* runtime_visible_annotations, |
437 int runtime_visible_annotations_length, | |
438 u1* runtime_invisible_annotations, | |
439 int runtime_invisible_annotations_length, | |
440 u1* runtime_visible_parameter_annotations, | |
441 int runtime_visible_parameter_annotations_length, | |
442 u1* runtime_invisible_parameter_annotations, | |
443 int runtime_invisible_parameter_annotations_length, | |
444 u1* runtime_visible_type_annotations, | |
445 int runtime_visible_type_annotations_length, | |
446 u1* runtime_invisible_type_annotations, | |
447 int runtime_invisible_type_annotations_length, | |
448 u1* annotation_default, | |
449 int annotation_default_length, | |
450 TRAPS); | |
451 | |
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452 // lays out fields in class and returns the total oopmap count |
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453 void layout_fields(Handle class_loader, FieldAllocationCount* fac, |
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454 ClassAnnotationCollector* parsed_annotations, |
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455 FieldLayoutInfo* info, TRAPS); |
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456 |
0 | 457 public: |
458 // Constructor | |
459 ClassFileParser(ClassFileStream* st) { set_stream(st); } | |
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460 ~ClassFileParser(); |
0 | 461 |
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462 // Parse .class file and return new Klass*. The Klass* is not hooked up |
0 | 463 // to the system dictionary or any other structures, so a .class file can |
464 // be loaded several times if desired. | |
465 // The system dictionary hookup is done by the caller. | |
466 // | |
467 // "parsed_name" is updated by this method, and is the name found | |
468 // while parsing the stream. | |
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469 instanceKlassHandle parseClassFile(Symbol* name, |
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470 ClassLoaderData* loader_data, |
0 | 471 Handle protection_domain, |
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472 TempNewSymbol& parsed_name, |
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473 bool verify, |
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474 TRAPS) { |
710 | 475 KlassHandle no_host_klass; |
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476 return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD); |
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477 } |
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478 instanceKlassHandle parseClassFile(Symbol* name, |
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479 ClassLoaderData* loader_data, |
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480 Handle protection_domain, |
710 | 481 KlassHandle host_klass, |
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482 GrowableArray<Handle>* cp_patches, |
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483 TempNewSymbol& parsed_name, |
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484 bool verify, |
0 | 485 TRAPS); |
486 | |
487 // Verifier checks | |
488 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS); | |
489 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS); | |
490 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS); | |
491 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS); | |
492 }; | |
1972 | 493 |
494 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP |