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annotate src/share/vm/classfile/classFileParser.hpp @ 17577:f0d759a6a230 jdk8u11-b01

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8037167: Better method signature resolution Reviewed-by: mschoene, hseigel, lfoltan
author acorn
date Thu, 20 Mar 2014 11:36:40 -0700
parents edb5ab0f3fe5
children f73af4455d7d
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1 /*
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
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26 #define SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP
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27
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28 #include "classfile/classFileStream.hpp"
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29 #include "memory/resourceArea.hpp"
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30 #include "oops/oop.inline.hpp"
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31 #include "oops/typeArrayOop.hpp"
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32 #include "runtime/handles.inline.hpp"
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33 #include "utilities/accessFlags.hpp"
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34 #include "classfile/symbolTable.hpp"
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35
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36 class FieldAllocationCount;
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37 class FieldLayoutInfo;
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38
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39
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40 // Parser for for .class files
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41 //
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42 // The bytes describing the class file structure is read from a Stream object
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43
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44 class ClassFileParser VALUE_OBJ_CLASS_SPEC {
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45 private:
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46 bool _need_verify;
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47 bool _relax_verify;
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48 u2 _major_version;
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49 u2 _minor_version;
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50 Symbol* _class_name;
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51 ClassLoaderData* _loader_data;
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52 KlassHandle _host_klass;
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53 GrowableArray<Handle>* _cp_patches; // overrides for CP entries
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54
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55 // precomputed flags
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56 bool _has_finalizer;
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57 bool _has_empty_finalizer;
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58 bool _has_vanilla_constructor;
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59 int _max_bootstrap_specifier_index; // detects BSS values
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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 AnnotationArray* _annotations;
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79 AnnotationArray* _type_annotations;
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80 Array<AnnotationArray*>* _fields_annotations;
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81 Array<AnnotationArray*>* _fields_type_annotations;
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82 InstanceKlass* _klass; // InstanceKlass once created.
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83
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84 void set_class_synthetic_flag(bool x) { _synthetic_flag = x; }
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85 void set_class_sourcefile_index(u2 x) { _sourcefile_index = x; }
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86 void set_class_generic_signature_index(u2 x) { _generic_signature_index = x; }
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87 void set_class_sde_buffer(char* x, int len) { _sde_buffer = x; _sde_length = len; }
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88
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89 void init_parsed_class_attributes(ClassLoaderData* loader_data) {
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90 _loader_data = loader_data;
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91 _synthetic_flag = false;
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92 _sourcefile_index = 0;
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93 _generic_signature_index = 0;
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94 _sde_buffer = NULL;
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95 _sde_length = 0;
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96 // initialize the other flags too:
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97 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
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98 _max_bootstrap_specifier_index = -1;
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99 clear_class_metadata();
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100 _klass = NULL;
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101 }
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102 void apply_parsed_class_attributes(instanceKlassHandle k); // update k
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103 void apply_parsed_class_metadata(instanceKlassHandle k, int fields_count, TRAPS);
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104 void clear_class_metadata() {
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105 // metadata created before the instance klass is created. Must be
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106 // deallocated if classfile parsing returns an error.
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107 _cp = NULL;
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108 _fields = NULL;
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109 _methods = NULL;
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110 _inner_classes = NULL;
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111 _local_interfaces = NULL;
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112 _transitive_interfaces = NULL;
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113 _annotations = _type_annotations = NULL;
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114 _fields_annotations = _fields_type_annotations = NULL;
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115 }
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116
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117 class AnnotationCollector {
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118 public:
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119 enum Location { _in_field, _in_method, _in_class };
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120 enum ID {
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121 _unknown = 0,
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122 _method_CallerSensitive,
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123 _method_ForceInline,
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124 _method_DontInline,
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125 _method_LambdaForm_Compiled,
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126 _method_LambdaForm_Hidden,
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127 _sun_misc_Contended,
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128 _field_Stable,
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129 _annotation_LIMIT
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130 };
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131 const Location _location;
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132 int _annotations_present;
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133 u2 _contended_group;
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134
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135 AnnotationCollector(Location location)
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136 : _location(location), _annotations_present(0)
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137 {
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138 assert((int)_annotation_LIMIT <= (int)sizeof(_annotations_present) * BitsPerByte, "");
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139 }
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140 // If this annotation name has an ID, report it (or _none).
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141 ID annotation_index(ClassLoaderData* loader_data, Symbol* name);
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142 // Set the annotation name:
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143 void set_annotation(ID id) {
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144 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
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145 _annotations_present |= nth_bit((int)id);
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146 }
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147
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148 void remove_annotation(ID id) {
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149 assert((int)id >= 0 && (int)id < (int)_annotation_LIMIT, "oob");
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150 _annotations_present &= ~nth_bit((int)id);
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151 }
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152
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153 // Report if the annotation is present.
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154 bool has_any_annotations() const { return _annotations_present != 0; }
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155 bool has_annotation(ID id) const { return (nth_bit((int)id) & _annotations_present) != 0; }
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156
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157 void set_contended_group(u2 group) { _contended_group = group; }
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158 u2 contended_group() const { return _contended_group; }
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159
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160 bool is_contended() const { return has_annotation(_sun_misc_Contended); }
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161
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162 void set_stable(bool stable) { set_annotation(_field_Stable); }
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163 bool is_stable() const { return has_annotation(_field_Stable); }
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164 };
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165
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166 // This class also doubles as a holder for metadata cleanup.
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167 class FieldAnnotationCollector: public AnnotationCollector {
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168 ClassLoaderData* _loader_data;
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169 AnnotationArray* _field_annotations;
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170 AnnotationArray* _field_type_annotations;
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171 public:
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172 FieldAnnotationCollector(ClassLoaderData* loader_data) :
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173 AnnotationCollector(_in_field),
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174 _loader_data(loader_data),
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175 _field_annotations(NULL),
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176 _field_type_annotations(NULL) {}
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177 void apply_to(FieldInfo* f);
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178 ~FieldAnnotationCollector();
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179 AnnotationArray* field_annotations() { return _field_annotations; }
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180 AnnotationArray* field_type_annotations() { return _field_type_annotations; }
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181
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182 void set_field_annotations(AnnotationArray* a) { _field_annotations = a; }
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183 void set_field_type_annotations(AnnotationArray* a) { _field_type_annotations = a; }
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184 };
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185
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186 class MethodAnnotationCollector: public AnnotationCollector {
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187 public:
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188 MethodAnnotationCollector() : AnnotationCollector(_in_method) { }
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189 void apply_to(methodHandle m);
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190 };
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191 class ClassAnnotationCollector: public AnnotationCollector {
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192 public:
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193 ClassAnnotationCollector() : AnnotationCollector(_in_class) { }
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194 void apply_to(instanceKlassHandle k);
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195 };
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196
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197 enum { fixed_buffer_size = 128 };
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198 u_char linenumbertable_buffer[fixed_buffer_size];
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199
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200 ClassFileStream* _stream; // Actual input stream
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201
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202 enum { LegalClass, LegalField, LegalMethod }; // used to verify unqualified names
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203
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204 // Accessors
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205 ClassFileStream* stream() { return _stream; }
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206 void set_stream(ClassFileStream* st) { _stream = st; }
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207
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208 // Constant pool parsing
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209 void parse_constant_pool_entries(int length, TRAPS);
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210
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211 constantPoolHandle parse_constant_pool(TRAPS);
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212
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213 // Interface parsing
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214 Array<Klass*>* parse_interfaces(int length,
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215 Handle protection_domain,
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216 Symbol* class_name,
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217 bool* has_default_methods,
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218 TRAPS);
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219 void record_defined_class_dependencies(instanceKlassHandle defined_klass, TRAPS);
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220
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221 instanceKlassHandle parse_super_class(int super_class_index, TRAPS);
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222 // Field parsing
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223 void parse_field_attributes(u2 attributes_count,
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224 bool is_static, u2 signature_index,
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225 u2* constantvalue_index_addr,
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226 bool* is_synthetic_addr,
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227 u2* generic_signature_index_addr,
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228 FieldAnnotationCollector* parsed_annotations,
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229 TRAPS);
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230 Array<u2>* parse_fields(Symbol* class_name,
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231 bool is_interface,
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232 FieldAllocationCount *fac,
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233 u2* java_fields_count_ptr, TRAPS);
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234
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235 void print_field_layout(Symbol* name,
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236 Array<u2>* fields,
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237 constantPoolHandle cp,
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238 int instance_size,
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239 int instance_fields_start,
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240 int instance_fields_end,
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241 int static_fields_end);
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242
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243 // Method parsing
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244 methodHandle parse_method(bool is_interface,
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245 AccessFlags* promoted_flags,
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246 TRAPS);
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247 Array<Method*>* parse_methods(bool is_interface,
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248 AccessFlags* promoted_flags,
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249 bool* has_final_method,
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250 bool* has_default_method,
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251 TRAPS);
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252 intArray* sort_methods(Array<Method*>* methods);
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253
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254 u2* parse_exception_table(u4 code_length, u4 exception_table_length,
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255 TRAPS);
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256 void parse_linenumber_table(
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257 u4 code_attribute_length, u4 code_length,
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258 CompressedLineNumberWriteStream** write_stream, TRAPS);
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259 u2* parse_localvariable_table(u4 code_length, u2 max_locals, u4 code_attribute_length,
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260 u2* localvariable_table_length,
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261 bool isLVTT, TRAPS);
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262 u2* parse_checked_exceptions(u2* checked_exceptions_length, u4 method_attribute_length,
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263 TRAPS);
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264 void parse_type_array(u2 array_length, u4 code_length, u4* u1_index, u4* u2_index,
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265 u1* u1_array, u2* u2_array, TRAPS);
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266 u1* parse_stackmap_table(u4 code_attribute_length, TRAPS);
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267
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268 // Classfile attribute parsing
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269 u2 parse_generic_signature_attribute(TRAPS);
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270 void parse_classfile_sourcefile_attribute(TRAPS);
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271 void parse_classfile_source_debug_extension_attribute(int length, TRAPS);
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272 u2 parse_classfile_inner_classes_attribute(u1* inner_classes_attribute_start,
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273 bool parsed_enclosingmethod_attribute,
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274 u2 enclosing_method_class_index,
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275 u2 enclosing_method_method_index,
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276 TRAPS);
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277 void parse_classfile_attributes(ClassAnnotationCollector* parsed_annotations,
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278 TRAPS);
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279 void parse_classfile_synthetic_attribute(TRAPS);
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280 void parse_classfile_signature_attribute(TRAPS);
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281 void parse_classfile_bootstrap_methods_attribute(u4 attribute_length, TRAPS);
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282
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283 // Annotations handling
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284 AnnotationArray* assemble_annotations(u1* runtime_visible_annotations,
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285 int runtime_visible_annotations_length,
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286 u1* runtime_invisible_annotations,
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287 int runtime_invisible_annotations_length, TRAPS);
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288 int skip_annotation(u1* buffer, int limit, int index);
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289 int skip_annotation_value(u1* buffer, int limit, int index);
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290 void parse_annotations(u1* buffer, int limit,
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291 /* Results (currently, only one result is supported): */
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292 AnnotationCollector* result,
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293 TRAPS);
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294
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295 // Final setup
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296 unsigned int compute_oop_map_count(instanceKlassHandle super,
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297 unsigned int nonstatic_oop_count,
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298 int first_nonstatic_oop_offset);
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299 void fill_oop_maps(instanceKlassHandle k,
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300 unsigned int nonstatic_oop_map_count,
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301 int* nonstatic_oop_offsets,
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302 unsigned int* nonstatic_oop_counts);
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303 void set_precomputed_flags(instanceKlassHandle k);
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304 Array<Klass*>* compute_transitive_interfaces(instanceKlassHandle super,
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305 Array<Klass*>* local_ifs, TRAPS);
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306
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307 // Format checker methods
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308 void classfile_parse_error(const char* msg, TRAPS);
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309 void classfile_parse_error(const char* msg, int index, TRAPS);
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310 void classfile_parse_error(const char* msg, const char *name, TRAPS);
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311 void classfile_parse_error(const char* msg, int index, const char *name, TRAPS);
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312 inline void guarantee_property(bool b, const char* msg, TRAPS) {
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313 if (!b) { classfile_parse_error(msg, CHECK); }
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314 }
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315
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316 inline void assert_property(bool b, const char* msg, TRAPS) {
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317 #ifdef ASSERT
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318 if (!b) {
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319 ResourceMark rm(THREAD);
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320 fatal(err_msg(msg, _class_name->as_C_string()));
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321 }
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322 #endif
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323 }
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324
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325 inline void assert_property(bool b, const char* msg, int index, TRAPS) {
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326 #ifdef ASSERT
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327 if (!b) {
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328 ResourceMark rm(THREAD);
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329 fatal(err_msg(msg, index, _class_name->as_C_string()));
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330 }
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331 #endif
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332 }
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333
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334 inline void check_property(bool property, const char* msg, int index, TRAPS) {
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335 if (_need_verify) {
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336 guarantee_property(property, msg, index, CHECK);
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337 } else {
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338 assert_property(property, msg, index, CHECK);
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339 }
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340 }
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341
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342 inline void check_property(bool property, const char* msg, TRAPS) {
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343 if (_need_verify) {
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344 guarantee_property(property, msg, CHECK);
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345 } else {
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346 assert_property(property, msg, CHECK);
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347 }
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348 }
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349
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350 inline void guarantee_property(bool b, const char* msg, int index, TRAPS) {
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351 if (!b) { classfile_parse_error(msg, index, CHECK); }
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352 }
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353 inline void guarantee_property(bool b, const char* msg, const char *name, TRAPS) {
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354 if (!b) { classfile_parse_error(msg, name, CHECK); }
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355 }
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356 inline void guarantee_property(bool b, const char* msg, int index, const char *name, TRAPS) {
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357 if (!b) { classfile_parse_error(msg, index, name, CHECK); }
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358 }
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359
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360 void throwIllegalSignature(
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361 const char* type, Symbol* name, Symbol* sig, TRAPS);
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362
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363 bool is_supported_version(u2 major, u2 minor);
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364 bool has_illegal_visibility(jint flags);
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365
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366 void verify_constantvalue(int constantvalue_index, int signature_index, TRAPS);
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367 void verify_legal_utf8(const unsigned char* buffer, int length, TRAPS);
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368 void verify_legal_class_name(Symbol* name, TRAPS);
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369 void verify_legal_field_name(Symbol* name, TRAPS);
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370 void verify_legal_method_name(Symbol* name, TRAPS);
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371 void verify_legal_field_signature(Symbol* fieldname, Symbol* signature, TRAPS);
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372 int verify_legal_method_signature(Symbol* methodname, Symbol* signature, TRAPS);
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373 void verify_legal_class_modifiers(jint flags, TRAPS);
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374 void verify_legal_field_modifiers(jint flags, bool is_interface, TRAPS);
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375 void verify_legal_method_modifiers(jint flags, bool is_interface, Symbol* name, TRAPS);
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376 bool verify_unqualified_name(char* name, unsigned int length, int type);
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377 char* skip_over_field_name(char* name, bool slash_ok, unsigned int length);
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378 char* skip_over_field_signature(char* signature, bool void_ok, unsigned int length, TRAPS);
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379
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380 bool is_anonymous() {
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381 assert(EnableInvokeDynamic || _host_klass.is_null(), "");
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382 return _host_klass.not_null();
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383 }
431
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384 bool has_cp_patch_at(int index) {
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385 assert(EnableInvokeDynamic, "");
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386 assert(index >= 0, "oob");
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387 return (_cp_patches != NULL
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388 && index < _cp_patches->length()
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389 && _cp_patches->adr_at(index)->not_null());
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390 }
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391 Handle cp_patch_at(int index) {
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392 assert(has_cp_patch_at(index), "oob");
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393 return _cp_patches->at(index);
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394 }
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395 Handle clear_cp_patch_at(int index) {
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396 Handle patch = cp_patch_at(index);
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397 _cp_patches->at_put(index, Handle());
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398 assert(!has_cp_patch_at(index), "");
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399 return patch;
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400 }
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401 void patch_constant_pool(constantPoolHandle cp, int index, Handle patch, TRAPS);
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402
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403 // Wrapper for constantTag.is_klass_[or_]reference.
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404 // In older versions of the VM, Klass*s cannot sneak into early phases of
431
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405 // constant pool construction, but in later versions they can.
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406 // %%% Let's phase out the old is_klass_reference.
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407 bool valid_klass_reference_at(int index) {
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408 return _cp->is_within_bounds(index) &&
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409 (EnableInvokeDynamic
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410 ? _cp->tag_at(index).is_klass_or_reference()
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411 : _cp->tag_at(index).is_klass_reference());
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412 }
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413
c8b31b461e1a 8003419: NPG: Clean up metadata created during class loading if failure
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414 // Checks that the cpool index is in range and is a utf8
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diff changeset
415 bool valid_symbol_at(int cpool_index) {
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416 return (_cp->is_within_bounds(cpool_index) &&
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417 _cp->tag_at(cpool_index).is_utf8());
431
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418 }
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diff changeset
419
8031
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420 void copy_localvariable_table(ConstMethod* cm, int lvt_cnt,
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421 u2* localvariable_table_length,
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422 u2** localvariable_table_start,
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423 int lvtt_cnt,
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424 u2* localvariable_type_table_length,
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425 u2** localvariable_type_table_start,
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426 TRAPS);
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427
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428 void copy_method_annotations(ConstMethod* cm,
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429 u1* runtime_visible_annotations,
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430 int runtime_visible_annotations_length,
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431 u1* runtime_invisible_annotations,
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diff changeset
432 int runtime_invisible_annotations_length,
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433 u1* runtime_visible_parameter_annotations,
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434 int runtime_visible_parameter_annotations_length,
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435 u1* runtime_invisible_parameter_annotations,
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436 int runtime_invisible_parameter_annotations_length,
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437 u1* runtime_visible_type_annotations,
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438 int runtime_visible_type_annotations_length,
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439 u1* runtime_invisible_type_annotations,
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440 int runtime_invisible_type_annotations_length,
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441 u1* annotation_default,
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442 int annotation_default_length,
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443 TRAPS);
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444
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445 // lays out fields in class and returns the total oopmap count
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diff changeset
446 void layout_fields(Handle class_loader, FieldAllocationCount* fac,
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diff changeset
447 ClassAnnotationCollector* parsed_annotations,
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448 FieldLayoutInfo* info, TRAPS);
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449
0
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450 public:
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451 // Constructor
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452 ClassFileParser(ClassFileStream* st) { set_stream(st); }
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453 ~ClassFileParser();
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454
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455 // Parse .class file and return new Klass*. The Klass* is not hooked up
0
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456 // to the system dictionary or any other structures, so a .class file can
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457 // be loaded several times if desired.
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458 // The system dictionary hookup is done by the caller.
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459 //
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460 // "parsed_name" is updated by this method, and is the name found
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461 // while parsing the stream.
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462 instanceKlassHandle parseClassFile(Symbol* name,
7185
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coleenp
parents: 6934
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463 ClassLoaderData* loader_data,
0
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464 Handle protection_domain,
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diff changeset
465 TempNewSymbol& parsed_name,
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parents: 875
diff changeset
466 bool verify,
431
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jrose
parents: 0
diff changeset
467 TRAPS) {
710
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diff changeset
468 KlassHandle no_host_klass;
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coleenp
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469 return parseClassFile(name, loader_data, protection_domain, no_host_klass, NULL, parsed_name, verify, THREAD);
431
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
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470 }
2177
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diff changeset
471 instanceKlassHandle parseClassFile(Symbol* name,
7185
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coleenp
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472 ClassLoaderData* loader_data,
431
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parents: 0
diff changeset
473 Handle protection_domain,
710
e5b0439ef4ae 6655638: dynamic languages need method handles
jrose
parents: 470
diff changeset
474 KlassHandle host_klass,
431
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes
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diff changeset
475 GrowableArray<Handle>* cp_patches,
2177
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diff changeset
476 TempNewSymbol& parsed_name,
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acorn
parents: 875
diff changeset
477 bool verify,
0
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478 TRAPS);
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479
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480 // Verifier checks
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481 static void check_super_class_access(instanceKlassHandle this_klass, TRAPS);
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482 static void check_super_interface_access(instanceKlassHandle this_klass, TRAPS);
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483 static void check_final_method_override(instanceKlassHandle this_klass, TRAPS);
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484 static void check_illegal_static_method(instanceKlassHandle this_klass, TRAPS);
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485 };
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1913
diff changeset
486
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1913
diff changeset
487 #endif // SHARE_VM_CLASSFILE_CLASSFILEPARSER_HPP