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annotate src/share/vm/classfile/verifier.hpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | 1070423b51f3 |
| children | 3582bf76420e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 1998, 2010, 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_VERIFIER_HPP |
| 26 #define SHARE_VM_CLASSFILE_VERIFIER_HPP | |
| 27 | |
| 28 #include "classfile/verificationType.hpp" | |
| 29 #include "memory/gcLocker.hpp" | |
| 30 #include "oops/klass.hpp" | |
| 31 #include "oops/methodOop.hpp" | |
| 32 #include "runtime/handles.hpp" | |
| 33 #include "utilities/exceptions.hpp" | |
| 34 | |
| 0 | 35 // The verifier class |
| 36 class Verifier : AllStatic { | |
| 37 public: | |
| 1602 | 38 enum { |
| 39 STACKMAP_ATTRIBUTE_MAJOR_VERSION = 50, | |
| 40 INVOKEDYNAMIC_MAJOR_VERSION = 51 | |
| 41 }; | |
| 0 | 42 typedef enum { ThrowException, NoException } Mode; |
| 43 | |
| 44 /** | |
| 45 * Verify the bytecodes for a class. If 'throw_exception' is true | |
| 46 * then the appropriate VerifyError or ClassFormatError will be thrown. | |
| 47 * Otherwise, no exception is thrown and the return indicates the | |
| 48 * error. | |
| 49 */ | |
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50 static bool verify(instanceKlassHandle klass, Mode mode, bool should_verify_class, TRAPS); |
| 0 | 51 |
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52 // Return false if the class is loaded by the bootstrap loader, |
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53 // or if defineClass was called requesting skipping verification |
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54 // -Xverify:all/none override this value |
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55 static bool should_verify_for(oop class_loader, bool should_verify_class); |
| 0 | 56 |
| 57 // Relax certain verifier checks to enable some broken 1.1 apps to run on 1.2. | |
| 58 static bool relax_verify_for(oop class_loader); | |
| 59 | |
| 60 private: | |
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61 static bool is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class); |
| 0 | 62 static symbolHandle inference_verify( |
| 63 instanceKlassHandle klass, char* msg, size_t msg_len, TRAPS); | |
| 64 }; | |
| 65 | |
| 66 class RawBytecodeStream; | |
| 67 class StackMapFrame; | |
| 68 class StackMapTable; | |
| 69 | |
| 70 // Summary of verifier's memory usage: | |
| 71 // StackMapTable is stack allocated. | |
| 72 // StackMapFrame are resource allocated. There is one ResourceMark | |
| 73 // for each method. | |
| 74 // There is one mutable StackMapFrame (current_frame) which is updated | |
| 75 // by abstract bytecode interpretation. frame_in_exception_handler() returns | |
| 76 // a frame that has a mutable one-item stack (ready for pushing the | |
| 77 // catch type exception object). All the other StackMapFrame's | |
| 78 // are immutable (including their locals and stack arrays) after | |
| 79 // their constructions. | |
| 80 // locals/stack arrays in StackMapFrame are resource allocated. | |
| 81 // locals/stack arrays can be shared between StackMapFrame's, except | |
| 82 // the mutable StackMapFrame (current_frame). | |
| 83 // Care needs to be taken to make sure resource objects don't outlive | |
| 84 // the lifetime of their ResourceMark. | |
| 85 | |
| 86 // These macros are used similarly to CHECK macros but also check | |
| 87 // the status of the verifier and return if that has an error. | |
| 88 #define CHECK_VERIFY(verifier) \ | |
| 89 CHECK); if ((verifier)->has_error()) return; (0 | |
| 90 #define CHECK_VERIFY_(verifier, result) \ | |
| 91 CHECK_(result)); if ((verifier)->has_error()) return (result); (0 | |
| 92 | |
| 93 // A new instance of this class is created for each class being verified | |
| 94 class ClassVerifier : public StackObj { | |
| 95 private: | |
| 96 Thread* _thread; | |
| 97 symbolHandle _exception_type; | |
| 98 char* _message; | |
| 99 size_t _message_buffer_len; | |
| 100 | |
| 101 void verify_method(methodHandle method, TRAPS); | |
| 102 char* generate_code_data(methodHandle m, u4 code_length, TRAPS); | |
| 103 void verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS); | |
| 104 void verify_local_variable_table(u4 code_length, char* code_data, TRAPS); | |
| 105 | |
| 106 VerificationType cp_ref_index_to_type( | |
| 107 int index, constantPoolHandle cp, TRAPS) { | |
| 108 return cp_index_to_type(cp->klass_ref_index_at(index), cp, THREAD); | |
| 109 } | |
| 110 | |
| 111 bool is_protected_access( | |
| 112 instanceKlassHandle this_class, klassOop target_class, | |
| 113 symbolOop field_name, symbolOop field_sig, bool is_method); | |
| 114 | |
| 115 void verify_cp_index(constantPoolHandle cp, int index, TRAPS); | |
| 116 void verify_cp_type( | |
| 117 int index, constantPoolHandle cp, unsigned int types, TRAPS); | |
| 118 void verify_cp_class_type(int index, constantPoolHandle cp, TRAPS); | |
| 119 | |
| 120 u2 verify_stackmap_table( | |
| 121 u2 stackmap_index, u2 bci, StackMapFrame* current_frame, | |
| 122 StackMapTable* stackmap_table, bool no_control_flow, TRAPS); | |
| 123 | |
| 124 void verify_exception_handler_targets( | |
| 125 u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 126 StackMapTable* stackmap_table, TRAPS); | |
| 127 | |
| 128 void verify_ldc( | |
| 129 int opcode, u2 index, StackMapFrame *current_frame, | |
| 130 constantPoolHandle cp, u2 bci, TRAPS); | |
| 131 | |
| 132 void verify_switch( | |
| 133 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 134 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS); | |
| 135 | |
| 136 void verify_field_instructions( | |
| 137 RawBytecodeStream* bcs, StackMapFrame* current_frame, | |
| 138 constantPoolHandle cp, TRAPS); | |
| 139 | |
| 140 void verify_invoke_init( | |
| 141 RawBytecodeStream* bcs, VerificationType ref_class_type, | |
| 142 StackMapFrame* current_frame, u4 code_length, bool* this_uninit, | |
| 143 constantPoolHandle cp, TRAPS); | |
| 144 | |
| 145 void verify_invoke_instructions( | |
| 146 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 147 bool* this_uninit, VerificationType return_type, | |
| 148 constantPoolHandle cp, TRAPS); | |
| 149 | |
| 150 VerificationType get_newarray_type(u2 index, u2 bci, TRAPS); | |
| 151 void verify_anewarray( | |
| 152 u2 index, constantPoolHandle cp, StackMapFrame* current_frame, TRAPS); | |
| 153 void verify_return_value( | |
| 154 VerificationType return_type, VerificationType type, u2 offset, TRAPS); | |
| 155 | |
| 156 void verify_iload (u2 index, StackMapFrame* current_frame, TRAPS); | |
| 157 void verify_lload (u2 index, StackMapFrame* current_frame, TRAPS); | |
| 158 void verify_fload (u2 index, StackMapFrame* current_frame, TRAPS); | |
| 159 void verify_dload (u2 index, StackMapFrame* current_frame, TRAPS); | |
| 160 void verify_aload (u2 index, StackMapFrame* current_frame, TRAPS); | |
| 161 void verify_istore(u2 index, StackMapFrame* current_frame, TRAPS); | |
| 162 void verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS); | |
| 163 void verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS); | |
| 164 void verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS); | |
| 165 void verify_astore(u2 index, StackMapFrame* current_frame, TRAPS); | |
| 166 void verify_iinc (u2 index, StackMapFrame* current_frame, TRAPS); | |
| 167 | |
| 168 bool name_in_supers(symbolOop ref_name, instanceKlassHandle current); | |
| 169 | |
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170 VerificationType object_type() const; |
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171 |
| 0 | 172 instanceKlassHandle _klass; // the class being verified |
| 173 methodHandle _method; // current method being verified | |
| 174 VerificationType _this_type; // the verification type of the current class | |
| 175 | |
| 1570 | 176 // Some recursive calls from the verifier to the name resolver |
| 177 // can cause the current class to be re-verified and rewritten. | |
| 178 // If this happens, the original verification should not continue, | |
| 179 // because constant pool indexes will have changed. | |
| 180 // The rewriter is preceded by the verifier. If the verifier throws | |
| 181 // an error, rewriting is prevented. Also, rewriting always precedes | |
| 182 // bytecode execution or compilation. Thus, is_rewritten implies | |
| 183 // that a class has been verified and prepared for execution. | |
| 184 bool was_recursively_verified() { return _klass->is_rewritten(); } | |
| 185 | |
| 0 | 186 public: |
| 187 enum { | |
| 188 BYTECODE_OFFSET = 1, | |
| 189 NEW_OFFSET = 2 | |
| 190 }; | |
| 191 | |
| 192 // constructor | |
| 193 ClassVerifier(instanceKlassHandle klass, char* msg, size_t msg_len, TRAPS); | |
| 194 | |
| 195 // destructor | |
| 196 ~ClassVerifier(); | |
| 197 | |
| 198 Thread* thread() { return _thread; } | |
| 199 methodHandle method() { return _method; } | |
| 200 instanceKlassHandle current_class() const { return _klass; } | |
| 201 VerificationType current_type() const { return _this_type; } | |
| 202 | |
| 203 // Verifies the class. If a verify or class file format error occurs, | |
| 204 // the '_exception_name' symbols will set to the exception name and | |
| 205 // the message_buffer will be filled in with the exception message. | |
| 206 void verify_class(TRAPS); | |
| 207 | |
| 208 // Return status modes | |
| 209 symbolHandle result() const { return _exception_type; } | |
| 210 bool has_error() const { return !(result().is_null()); } | |
| 211 | |
| 212 // Called when verify or class format errors are encountered. | |
| 213 // May throw an exception based upon the mode. | |
| 214 void verify_error(u2 offset, const char* fmt, ...); | |
| 215 void verify_error(const char* fmt, ...); | |
| 216 void class_format_error(const char* fmt, ...); | |
| 217 void format_error_message(const char* fmt, int offset, va_list args); | |
| 218 | |
| 219 klassOop load_class(symbolHandle name, TRAPS); | |
| 220 | |
| 221 int change_sig_to_verificationType( | |
| 222 SignatureStream* sig_type, VerificationType* inference_type, TRAPS); | |
| 223 | |
| 224 VerificationType cp_index_to_type(int index, constantPoolHandle cp, TRAPS) { | |
| 225 return VerificationType::reference_type( | |
| 226 symbolHandle(THREAD, cp->klass_name_at(index))); | |
| 227 } | |
| 228 | |
| 229 static bool _verify_verbose; // for debugging | |
| 230 }; | |
| 231 | |
| 232 inline int ClassVerifier::change_sig_to_verificationType( | |
| 233 SignatureStream* sig_type, VerificationType* inference_type, TRAPS) { | |
| 234 BasicType bt = sig_type->type(); | |
| 235 switch (bt) { | |
| 236 case T_OBJECT: | |
| 237 case T_ARRAY: | |
| 238 { | |
| 239 symbolOop name = sig_type->as_symbol(CHECK_0); | |
| 240 *inference_type = | |
| 241 VerificationType::reference_type(symbolHandle(THREAD, name)); | |
| 242 return 1; | |
| 243 } | |
| 244 case T_LONG: | |
| 245 *inference_type = VerificationType::long_type(); | |
| 246 *++inference_type = VerificationType::long2_type(); | |
| 247 return 2; | |
| 248 case T_DOUBLE: | |
| 249 *inference_type = VerificationType::double_type(); | |
| 250 *++inference_type = VerificationType::double2_type(); | |
| 251 return 2; | |
| 252 case T_INT: | |
| 253 case T_BOOLEAN: | |
| 254 case T_BYTE: | |
| 255 case T_CHAR: | |
| 256 case T_SHORT: | |
| 257 *inference_type = VerificationType::integer_type(); | |
| 258 return 1; | |
| 259 case T_FLOAT: | |
| 260 *inference_type = VerificationType::float_type(); | |
| 261 return 1; | |
| 262 default: | |
| 263 ShouldNotReachHere(); | |
| 264 return 1; | |
| 265 } | |
| 266 } | |
| 1972 | 267 |
| 268 #endif // SHARE_VM_CLASSFILE_VERIFIER_HPP |