Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 1980:828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
Summary: move functions from hpi library to hotspot, communicate with licensees and open source community, check jdk for dependency, file CCC request
Reviewed-by: coleenp, acorn, dsamersoff
| author | ikrylov |
|---|---|
| date | Wed, 01 Dec 2010 18:26:32 -0500 |
| parents | f95d63e2154a |
| children | 3582bf76420e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1579 | 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 #include "precompiled.hpp" |
| 26 #include "classfile/classFileStream.hpp" | |
| 27 #include "classfile/javaClasses.hpp" | |
| 28 #include "classfile/stackMapTable.hpp" | |
| 29 #include "classfile/systemDictionary.hpp" | |
| 30 #include "classfile/verifier.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "interpreter/bytecodeStream.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/resourceArea.hpp" | |
| 35 #include "oops/instanceKlass.hpp" | |
| 36 #include "oops/oop.inline.hpp" | |
| 37 #include "oops/typeArrayOop.hpp" | |
| 38 #include "prims/jvm.h" | |
| 39 #include "runtime/fieldDescriptor.hpp" | |
| 40 #include "runtime/handles.inline.hpp" | |
| 41 #include "runtime/interfaceSupport.hpp" | |
| 42 #include "runtime/javaCalls.hpp" | |
| 43 #include "runtime/orderAccess.hpp" | |
| 44 #include "runtime/os.hpp" | |
| 45 #ifdef TARGET_ARCH_x86 | |
| 46 # include "bytes_x86.hpp" | |
| 47 #endif | |
| 48 #ifdef TARGET_ARCH_sparc | |
| 49 # include "bytes_sparc.hpp" | |
| 50 #endif | |
| 51 #ifdef TARGET_ARCH_zero | |
| 52 # include "bytes_zero.hpp" | |
| 53 #endif | |
| 0 | 54 |
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55 #define NOFAILOVER_MAJOR_VERSION 51 |
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56 |
| 0 | 57 // Access to external entry for VerifyClassCodes - old byte code verifier |
| 58 | |
| 59 extern "C" { | |
| 60 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
| 61 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
| 62 } | |
| 63 | |
| 64 static void* volatile _verify_byte_codes_fn = NULL; | |
| 65 | |
| 66 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
| 67 | |
| 68 static void* verify_byte_codes_fn() { | |
| 69 if (_verify_byte_codes_fn == NULL) { | |
| 70 void *lib_handle = os::native_java_library(); | |
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71 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
| 0 | 72 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 73 if (func == NULL) { | |
| 74 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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75 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
| 0 | 76 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 77 } | |
| 78 } | |
| 79 return (void*)_verify_byte_codes_fn; | |
| 80 } | |
| 81 | |
| 82 | |
| 83 // Methods in Verifier | |
| 84 | |
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85 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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86 return (class_loader == NULL || !should_verify_class) ? |
| 0 | 87 BytecodeVerificationLocal : BytecodeVerificationRemote; |
| 88 } | |
| 89 | |
| 90 bool Verifier::relax_verify_for(oop loader) { | |
| 91 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 92 bool need_verify = | |
| 93 // verifyAll | |
| 94 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
| 95 // verifyRemote | |
| 96 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
| 97 return !need_verify; | |
| 98 } | |
| 99 | |
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100 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
| 0 | 101 ResourceMark rm(THREAD); |
| 102 HandleMark hm; | |
| 103 | |
| 104 symbolHandle exception_name; | |
| 105 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; | |
| 106 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
| 107 | |
| 108 const char* klassName = klass->external_name(); | |
| 109 | |
| 110 // If the class should be verified, first see if we can use the split | |
| 111 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
| 112 // is set, then call the inference verifier. | |
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113 if (is_eligible_for_verification(klass, should_verify_class)) { |
| 0 | 114 if (TraceClassInitialization) { |
| 115 tty->print_cr("Start class verification for: %s", klassName); | |
| 116 } | |
| 117 if (UseSplitVerifier && | |
| 118 klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { | |
| 119 ClassVerifier split_verifier( | |
| 120 klass, message_buffer, message_buffer_len, THREAD); | |
| 121 split_verifier.verify_class(THREAD); | |
| 122 exception_name = split_verifier.result(); | |
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123 if (klass->major_version() < NOFAILOVER_MAJOR_VERSION && |
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124 FailOverToOldVerifier && !HAS_PENDING_EXCEPTION && |
| 0 | 125 (exception_name == vmSymbols::java_lang_VerifyError() || |
| 126 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
| 127 if (TraceClassInitialization) { | |
| 128 tty->print_cr( | |
| 129 "Fail over class verification to old verifier for: %s", klassName); | |
| 130 } | |
| 131 exception_name = inference_verify( | |
| 132 klass, message_buffer, message_buffer_len, THREAD); | |
| 133 } | |
| 134 } else { | |
| 135 exception_name = inference_verify( | |
| 136 klass, message_buffer, message_buffer_len, THREAD); | |
| 137 } | |
| 138 | |
| 139 if (TraceClassInitialization) { | |
| 140 if (HAS_PENDING_EXCEPTION) { | |
| 141 tty->print("Verification for %s has", klassName); | |
| 142 tty->print_cr(" exception pending %s ", | |
| 143 instanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); | |
| 144 } else if (!exception_name.is_null()) { | |
| 145 tty->print_cr("Verification for %s failed", klassName); | |
| 146 } | |
| 147 tty->print_cr("End class verification for: %s", klassName); | |
| 148 } | |
| 149 } | |
| 150 | |
| 151 if (HAS_PENDING_EXCEPTION) { | |
| 152 return false; // use the existing exception | |
| 153 } else if (exception_name.is_null()) { | |
| 154 return true; // verifcation succeeded | |
| 155 } else { // VerifyError or ClassFormatError to be created and thrown | |
| 156 ResourceMark rm(THREAD); | |
| 157 instanceKlassHandle kls = | |
| 158 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
| 159 while (!kls.is_null()) { | |
| 160 if (kls == klass) { | |
| 161 // If the class being verified is the exception we're creating | |
| 162 // or one of it's superclasses, we're in trouble and are going | |
| 163 // to infinitely recurse when we try to initialize the exception. | |
| 164 // So bail out here by throwing the preallocated VM error. | |
| 165 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
| 166 } | |
| 167 kls = kls->super(); | |
| 168 } | |
| 169 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
| 170 THROW_MSG_(exception_name, message_buffer, false); | |
| 171 } | |
| 172 } | |
| 173 | |
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174 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
| 0 | 175 symbolOop name = klass->name(); |
| 1142 | 176 klassOop refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
| 0 | 177 |
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178 return (should_verify_for(klass->class_loader(), should_verify_class) && |
| 0 | 179 // return if the class is a bootstrapping class |
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180 // or defineClass specified not to verify by default (flags override passed arg) |
| 0 | 181 // We need to skip the following four for bootstraping |
| 182 name != vmSymbols::java_lang_Object() && | |
| 183 name != vmSymbols::java_lang_Class() && | |
| 184 name != vmSymbols::java_lang_String() && | |
| 185 name != vmSymbols::java_lang_Throwable() && | |
| 186 | |
| 187 // Can not verify the bytecodes for shared classes because they have | |
| 188 // already been rewritten to contain constant pool cache indices, | |
| 189 // which the verifier can't understand. | |
| 190 // Shared classes shouldn't have stackmaps either. | |
| 191 !klass()->is_shared() && | |
| 192 | |
| 193 // As of the fix for 4486457 we disable verification for all of the | |
| 194 // dynamically-generated bytecodes associated with the 1.4 | |
| 195 // reflection implementation, not just those associated with | |
| 196 // sun/reflect/SerializationConstructorAccessor. | |
| 197 // NOTE: this is called too early in the bootstrapping process to be | |
| 198 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
| 199 (refl_magic_klass == NULL || | |
| 200 !klass->is_subtype_of(refl_magic_klass) || | |
| 201 VerifyReflectionBytecodes) | |
| 202 ); | |
| 203 } | |
| 204 | |
| 205 symbolHandle Verifier::inference_verify( | |
| 206 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { | |
| 207 JavaThread* thread = (JavaThread*)THREAD; | |
| 208 JNIEnv *env = thread->jni_environment(); | |
| 209 | |
| 210 void* verify_func = verify_byte_codes_fn(); | |
| 211 | |
| 212 if (verify_func == NULL) { | |
| 213 jio_snprintf(message, message_len, "Could not link verifier"); | |
| 214 return vmSymbols::java_lang_VerifyError(); | |
| 215 } | |
| 216 | |
| 217 ResourceMark rm(THREAD); | |
| 218 if (ClassVerifier::_verify_verbose) { | |
| 219 tty->print_cr("Verifying class %s with old format", klass->external_name()); | |
| 220 } | |
| 221 | |
| 222 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
| 223 jint result; | |
| 224 | |
| 225 { | |
| 226 HandleMark hm(thread); | |
| 227 ThreadToNativeFromVM ttn(thread); | |
| 228 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
| 229 // code knows that we have left the VM | |
| 230 | |
| 231 if (_is_new_verify_byte_codes_fn) { | |
| 232 verify_byte_codes_fn_new_t func = | |
| 233 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
| 234 result = (*func)(env, cls, message, (int)message_len, | |
| 235 klass->major_version()); | |
| 236 } else { | |
| 237 verify_byte_codes_fn_t func = | |
| 238 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
| 239 result = (*func)(env, cls, message, (int)message_len); | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 JNIHandles::destroy_local(cls); | |
| 244 | |
| 245 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
| 246 // to be changed (still return jboolean (unsigned char)), and result is | |
| 247 // 1 when verification is passed. | |
| 248 symbolHandle nh(NULL); | |
| 249 if (result == 0) { | |
| 250 return vmSymbols::java_lang_VerifyError(); | |
| 251 } else if (result == 1) { | |
| 252 return nh; // verified. | |
| 253 } else if (result == 2) { | |
| 254 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, nh); | |
| 255 } else if (result == 3) { | |
| 256 return vmSymbols::java_lang_ClassFormatError(); | |
| 257 } else { | |
| 258 ShouldNotReachHere(); | |
| 259 return nh; | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 // Methods in ClassVerifier | |
| 264 | |
| 265 bool ClassVerifier::_verify_verbose = false; | |
| 266 | |
| 267 ClassVerifier::ClassVerifier( | |
| 268 instanceKlassHandle klass, char* msg, size_t msg_len, TRAPS) | |
| 269 : _thread(THREAD), _exception_type(symbolHandle()), _message(msg), | |
| 270 _message_buffer_len(msg_len), _klass(klass) { | |
| 271 _this_type = VerificationType::reference_type(klass->name()); | |
| 272 } | |
| 273 | |
| 274 ClassVerifier::~ClassVerifier() { | |
| 275 } | |
| 276 | |
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277 VerificationType ClassVerifier::object_type() const { |
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278 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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279 } |
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280 |
| 0 | 281 void ClassVerifier::verify_class(TRAPS) { |
| 282 if (_verify_verbose) { | |
| 283 tty->print_cr("Verifying class %s with new format", | |
| 284 _klass->external_name()); | |
| 285 } | |
| 286 | |
| 287 objArrayHandle methods(THREAD, _klass->methods()); | |
| 288 int num_methods = methods->length(); | |
| 289 | |
| 290 for (int index = 0; index < num_methods; index++) { | |
| 1570 | 291 // Check for recursive re-verification before each method. |
| 292 if (was_recursively_verified()) return; | |
| 293 | |
| 0 | 294 methodOop m = (methodOop)methods->obj_at(index); |
| 295 if (m->is_native() || m->is_abstract()) { | |
| 296 // If m is native or abstract, skip it. It is checked in class file | |
| 297 // parser that methods do not override a final method. | |
| 298 continue; | |
| 299 } | |
| 300 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
| 301 } | |
| 1570 | 302 |
| 303 if (_verify_verbose || TraceClassInitialization) { | |
| 304 if (was_recursively_verified()) | |
| 305 tty->print_cr("Recursive verification detected for: %s", | |
| 306 _klass->external_name()); | |
| 307 } | |
| 0 | 308 } |
| 309 | |
| 310 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
| 311 ResourceMark rm(THREAD); | |
| 312 _method = m; // initialize _method | |
| 313 if (_verify_verbose) { | |
| 314 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); | |
| 315 } | |
| 316 | |
| 317 const char* bad_type_msg = "Bad type on operand stack in %s"; | |
| 318 | |
| 319 int32_t max_stack = m->max_stack(); | |
| 320 int32_t max_locals = m->max_locals(); | |
| 321 constantPoolHandle cp(THREAD, m->constants()); | |
| 322 | |
| 323 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
| 324 class_format_error("Invalid method signature"); | |
| 325 return; | |
| 326 } | |
| 327 | |
| 328 // Initial stack map frame: offset is 0, stack is initially empty. | |
| 329 StackMapFrame current_frame(max_locals, max_stack, this); | |
| 330 // Set initial locals | |
| 331 VerificationType return_type = current_frame.set_locals_from_arg( | |
| 332 m, current_type(), CHECK_VERIFY(this)); | |
| 333 | |
| 334 int32_t stackmap_index = 0; // index to the stackmap array | |
| 335 | |
| 336 u4 code_length = m->code_size(); | |
| 337 | |
| 338 // Scan the bytecode and map each instruction's start offset to a number. | |
| 339 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
| 340 | |
| 341 int ex_min = code_length; | |
| 342 int ex_max = -1; | |
| 343 // Look through each item on the exception table. Each of the fields must refer | |
| 344 // to a legal instruction. | |
| 345 verify_exception_handler_table( | |
| 346 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
| 347 | |
| 348 // Look through each entry on the local variable table and make sure | |
| 349 // its range of code array offsets is valid. (4169817) | |
| 350 if (m->has_localvariable_table()) { | |
| 351 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
| 352 } | |
| 353 | |
| 354 typeArrayHandle stackmap_data(THREAD, m->stackmap_data()); | |
| 355 StackMapStream stream(stackmap_data); | |
| 356 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
| 357 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
| 358 code_data, code_length, CHECK_VERIFY(this)); | |
| 359 | |
| 360 if (_verify_verbose) { | |
| 361 stackmap_table.print(); | |
| 362 } | |
| 363 | |
| 364 RawBytecodeStream bcs(m); | |
| 365 | |
| 366 // Scan the byte code linearly from the start to the end | |
| 367 bool no_control_flow = false; // Set to true when there is no direct control | |
| 368 // flow from current instruction to the next | |
| 369 // instruction in sequence | |
| 370 Bytecodes::Code opcode; | |
| 371 while (!bcs.is_last_bytecode()) { | |
| 1570 | 372 // Check for recursive re-verification before each bytecode. |
| 373 if (was_recursively_verified()) return; | |
| 374 | |
| 0 | 375 opcode = bcs.raw_next(); |
| 376 u2 bci = bcs.bci(); | |
| 377 | |
| 378 // Set current frame's offset to bci | |
| 379 current_frame.set_offset(bci); | |
| 380 | |
| 381 // Make sure every offset in stackmap table point to the beginning to | |
| 382 // an instruction. Match current_frame to stackmap_table entry with | |
| 383 // the same offset if exists. | |
| 384 stackmap_index = verify_stackmap_table( | |
| 385 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
| 386 no_control_flow, CHECK_VERIFY(this)); | |
| 387 | |
| 388 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' | |
| 389 | |
| 390 // Merge with the next instruction | |
| 391 { | |
| 392 u2 index; | |
| 393 int target; | |
| 394 VerificationType type, type2; | |
| 395 VerificationType atype; | |
| 396 | |
| 397 #ifndef PRODUCT | |
| 398 if (_verify_verbose) { | |
| 399 current_frame.print(); | |
| 400 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); | |
| 401 } | |
| 402 #endif | |
| 403 | |
| 404 // Make sure wide instruction is in correct format | |
| 405 if (bcs.is_wide()) { | |
| 406 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
| 407 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
| 408 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
| 409 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
| 410 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
| 411 opcode != Bytecodes::_dstore) { | |
| 412 verify_error(bci, "Bad wide instruction"); | |
| 413 return; | |
| 414 } | |
| 415 } | |
| 416 | |
| 417 switch (opcode) { | |
| 418 case Bytecodes::_nop : | |
| 419 no_control_flow = false; break; | |
| 420 case Bytecodes::_aconst_null : | |
| 421 current_frame.push_stack( | |
| 422 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 423 no_control_flow = false; break; | |
| 424 case Bytecodes::_iconst_m1 : | |
| 425 case Bytecodes::_iconst_0 : | |
| 426 case Bytecodes::_iconst_1 : | |
| 427 case Bytecodes::_iconst_2 : | |
| 428 case Bytecodes::_iconst_3 : | |
| 429 case Bytecodes::_iconst_4 : | |
| 430 case Bytecodes::_iconst_5 : | |
| 431 current_frame.push_stack( | |
| 432 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 433 no_control_flow = false; break; | |
| 434 case Bytecodes::_lconst_0 : | |
| 435 case Bytecodes::_lconst_1 : | |
| 436 current_frame.push_stack_2( | |
| 437 VerificationType::long_type(), | |
| 438 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 439 no_control_flow = false; break; | |
| 440 case Bytecodes::_fconst_0 : | |
| 441 case Bytecodes::_fconst_1 : | |
| 442 case Bytecodes::_fconst_2 : | |
| 443 current_frame.push_stack( | |
| 444 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 445 no_control_flow = false; break; | |
| 446 case Bytecodes::_dconst_0 : | |
| 447 case Bytecodes::_dconst_1 : | |
| 448 current_frame.push_stack_2( | |
| 449 VerificationType::double_type(), | |
| 450 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 451 no_control_flow = false; break; | |
| 452 case Bytecodes::_sipush : | |
| 453 case Bytecodes::_bipush : | |
| 454 current_frame.push_stack( | |
| 455 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 456 no_control_flow = false; break; | |
| 457 case Bytecodes::_ldc : | |
| 458 verify_ldc( | |
| 1565 | 459 opcode, bcs.get_index_u1(), ¤t_frame, |
| 0 | 460 cp, bci, CHECK_VERIFY(this)); |
| 461 no_control_flow = false; break; | |
| 462 case Bytecodes::_ldc_w : | |
| 463 case Bytecodes::_ldc2_w : | |
| 464 verify_ldc( | |
| 1565 | 465 opcode, bcs.get_index_u2(), ¤t_frame, |
| 0 | 466 cp, bci, CHECK_VERIFY(this)); |
| 467 no_control_flow = false; break; | |
| 468 case Bytecodes::_iload : | |
| 469 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 470 no_control_flow = false; break; | |
| 471 case Bytecodes::_iload_0 : | |
| 472 case Bytecodes::_iload_1 : | |
| 473 case Bytecodes::_iload_2 : | |
| 474 case Bytecodes::_iload_3 : | |
| 475 index = opcode - Bytecodes::_iload_0; | |
| 476 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 477 no_control_flow = false; break; | |
| 478 case Bytecodes::_lload : | |
| 479 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 480 no_control_flow = false; break; | |
| 481 case Bytecodes::_lload_0 : | |
| 482 case Bytecodes::_lload_1 : | |
| 483 case Bytecodes::_lload_2 : | |
| 484 case Bytecodes::_lload_3 : | |
| 485 index = opcode - Bytecodes::_lload_0; | |
| 486 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 487 no_control_flow = false; break; | |
| 488 case Bytecodes::_fload : | |
| 489 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 490 no_control_flow = false; break; | |
| 491 case Bytecodes::_fload_0 : | |
| 492 case Bytecodes::_fload_1 : | |
| 493 case Bytecodes::_fload_2 : | |
| 494 case Bytecodes::_fload_3 : | |
| 495 index = opcode - Bytecodes::_fload_0; | |
| 496 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 497 no_control_flow = false; break; | |
| 498 case Bytecodes::_dload : | |
| 499 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 500 no_control_flow = false; break; | |
| 501 case Bytecodes::_dload_0 : | |
| 502 case Bytecodes::_dload_1 : | |
| 503 case Bytecodes::_dload_2 : | |
| 504 case Bytecodes::_dload_3 : | |
| 505 index = opcode - Bytecodes::_dload_0; | |
| 506 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 507 no_control_flow = false; break; | |
| 508 case Bytecodes::_aload : | |
| 509 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 510 no_control_flow = false; break; | |
| 511 case Bytecodes::_aload_0 : | |
| 512 case Bytecodes::_aload_1 : | |
| 513 case Bytecodes::_aload_2 : | |
| 514 case Bytecodes::_aload_3 : | |
| 515 index = opcode - Bytecodes::_aload_0; | |
| 516 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 517 no_control_flow = false; break; | |
| 518 case Bytecodes::_iaload : | |
| 519 type = current_frame.pop_stack( | |
| 520 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 521 atype = current_frame.pop_stack( | |
| 522 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 523 if (!atype.is_int_array()) { | |
| 524 verify_error(bci, bad_type_msg, "iaload"); | |
| 525 return; | |
| 526 } | |
| 527 current_frame.push_stack( | |
| 528 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 529 no_control_flow = false; break; | |
| 530 case Bytecodes::_baload : | |
| 531 type = current_frame.pop_stack( | |
| 532 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 533 atype = current_frame.pop_stack( | |
| 534 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 535 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 536 verify_error(bci, bad_type_msg, "baload"); | |
| 537 return; | |
| 538 } | |
| 539 current_frame.push_stack( | |
| 540 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 541 no_control_flow = false; break; | |
| 542 case Bytecodes::_caload : | |
| 543 type = current_frame.pop_stack( | |
| 544 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 545 atype = current_frame.pop_stack( | |
| 546 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 547 if (!atype.is_char_array()) { | |
| 548 verify_error(bci, bad_type_msg, "caload"); | |
| 549 return; | |
| 550 } | |
| 551 current_frame.push_stack( | |
| 552 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 553 no_control_flow = false; break; | |
| 554 case Bytecodes::_saload : | |
| 555 type = current_frame.pop_stack( | |
| 556 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 557 atype = current_frame.pop_stack( | |
| 558 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 559 if (!atype.is_short_array()) { | |
| 560 verify_error(bci, bad_type_msg, "saload"); | |
| 561 return; | |
| 562 } | |
| 563 current_frame.push_stack( | |
| 564 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 565 no_control_flow = false; break; | |
| 566 case Bytecodes::_laload : | |
| 567 type = current_frame.pop_stack( | |
| 568 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 569 atype = current_frame.pop_stack( | |
| 570 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 571 if (!atype.is_long_array()) { | |
| 572 verify_error(bci, bad_type_msg, "laload"); | |
| 573 return; | |
| 574 } | |
| 575 current_frame.push_stack_2( | |
| 576 VerificationType::long_type(), | |
| 577 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 578 no_control_flow = false; break; | |
| 579 case Bytecodes::_faload : | |
| 580 type = current_frame.pop_stack( | |
| 581 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 582 atype = current_frame.pop_stack( | |
| 583 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 584 if (!atype.is_float_array()) { | |
| 585 verify_error(bci, bad_type_msg, "faload"); | |
| 586 return; | |
| 587 } | |
| 588 current_frame.push_stack( | |
| 589 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 590 no_control_flow = false; break; | |
| 591 case Bytecodes::_daload : | |
| 592 type = current_frame.pop_stack( | |
| 593 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 594 atype = current_frame.pop_stack( | |
| 595 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 596 if (!atype.is_double_array()) { | |
| 597 verify_error(bci, bad_type_msg, "daload"); | |
| 598 return; | |
| 599 } | |
| 600 current_frame.push_stack_2( | |
| 601 VerificationType::double_type(), | |
| 602 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 603 no_control_flow = false; break; | |
| 604 case Bytecodes::_aaload : { | |
| 605 type = current_frame.pop_stack( | |
| 606 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 607 atype = current_frame.pop_stack( | |
| 608 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 609 if (!atype.is_reference_array()) { | |
| 610 verify_error(bci, bad_type_msg, "aaload"); | |
| 611 return; | |
| 612 } | |
| 613 if (atype.is_null()) { | |
| 614 current_frame.push_stack( | |
| 615 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 616 } else { | |
| 617 VerificationType component = | |
| 618 atype.get_component(CHECK_VERIFY(this)); | |
| 619 current_frame.push_stack(component, CHECK_VERIFY(this)); | |
| 620 } | |
| 621 no_control_flow = false; break; | |
| 622 } | |
| 623 case Bytecodes::_istore : | |
| 624 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 625 no_control_flow = false; break; | |
| 626 case Bytecodes::_istore_0 : | |
| 627 case Bytecodes::_istore_1 : | |
| 628 case Bytecodes::_istore_2 : | |
| 629 case Bytecodes::_istore_3 : | |
| 630 index = opcode - Bytecodes::_istore_0; | |
| 631 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 632 no_control_flow = false; break; | |
| 633 case Bytecodes::_lstore : | |
| 634 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 635 no_control_flow = false; break; | |
| 636 case Bytecodes::_lstore_0 : | |
| 637 case Bytecodes::_lstore_1 : | |
| 638 case Bytecodes::_lstore_2 : | |
| 639 case Bytecodes::_lstore_3 : | |
| 640 index = opcode - Bytecodes::_lstore_0; | |
| 641 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 642 no_control_flow = false; break; | |
| 643 case Bytecodes::_fstore : | |
| 644 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 645 no_control_flow = false; break; | |
| 646 case Bytecodes::_fstore_0 : | |
| 647 case Bytecodes::_fstore_1 : | |
| 648 case Bytecodes::_fstore_2 : | |
| 649 case Bytecodes::_fstore_3 : | |
| 650 index = opcode - Bytecodes::_fstore_0; | |
| 651 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 652 no_control_flow = false; break; | |
| 653 case Bytecodes::_dstore : | |
| 654 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 655 no_control_flow = false; break; | |
| 656 case Bytecodes::_dstore_0 : | |
| 657 case Bytecodes::_dstore_1 : | |
| 658 case Bytecodes::_dstore_2 : | |
| 659 case Bytecodes::_dstore_3 : | |
| 660 index = opcode - Bytecodes::_dstore_0; | |
| 661 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 662 no_control_flow = false; break; | |
| 663 case Bytecodes::_astore : | |
| 664 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 665 no_control_flow = false; break; | |
| 666 case Bytecodes::_astore_0 : | |
| 667 case Bytecodes::_astore_1 : | |
| 668 case Bytecodes::_astore_2 : | |
| 669 case Bytecodes::_astore_3 : | |
| 670 index = opcode - Bytecodes::_astore_0; | |
| 671 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 672 no_control_flow = false; break; | |
| 673 case Bytecodes::_iastore : | |
| 674 type = current_frame.pop_stack( | |
| 675 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 676 type2 = current_frame.pop_stack( | |
| 677 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 678 atype = current_frame.pop_stack( | |
| 679 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 680 if (!atype.is_int_array()) { | |
| 681 verify_error(bci, bad_type_msg, "iastore"); | |
| 682 return; | |
| 683 } | |
| 684 no_control_flow = false; break; | |
| 685 case Bytecodes::_bastore : | |
| 686 type = current_frame.pop_stack( | |
| 687 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 688 type2 = current_frame.pop_stack( | |
| 689 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 690 atype = current_frame.pop_stack( | |
| 691 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 692 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 693 verify_error(bci, bad_type_msg, "bastore"); | |
| 694 return; | |
| 695 } | |
| 696 no_control_flow = false; break; | |
| 697 case Bytecodes::_castore : | |
| 698 current_frame.pop_stack( | |
| 699 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 700 current_frame.pop_stack( | |
| 701 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 702 atype = current_frame.pop_stack( | |
| 703 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 704 if (!atype.is_char_array()) { | |
| 705 verify_error(bci, bad_type_msg, "castore"); | |
| 706 return; | |
| 707 } | |
| 708 no_control_flow = false; break; | |
| 709 case Bytecodes::_sastore : | |
| 710 current_frame.pop_stack( | |
| 711 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 712 current_frame.pop_stack( | |
| 713 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 714 atype = current_frame.pop_stack( | |
| 715 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 716 if (!atype.is_short_array()) { | |
| 717 verify_error(bci, bad_type_msg, "sastore"); | |
| 718 return; | |
| 719 } | |
| 720 no_control_flow = false; break; | |
| 721 case Bytecodes::_lastore : | |
| 722 current_frame.pop_stack_2( | |
| 723 VerificationType::long2_type(), | |
| 724 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 725 current_frame.pop_stack( | |
| 726 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 727 atype = current_frame.pop_stack( | |
| 728 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 729 if (!atype.is_long_array()) { | |
| 730 verify_error(bci, bad_type_msg, "lastore"); | |
| 731 return; | |
| 732 } | |
| 733 no_control_flow = false; break; | |
| 734 case Bytecodes::_fastore : | |
| 735 current_frame.pop_stack( | |
| 736 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 737 current_frame.pop_stack | |
| 738 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 739 atype = current_frame.pop_stack( | |
| 740 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 741 if (!atype.is_float_array()) { | |
| 742 verify_error(bci, bad_type_msg, "fastore"); | |
| 743 return; | |
| 744 } | |
| 745 no_control_flow = false; break; | |
| 746 case Bytecodes::_dastore : | |
| 747 current_frame.pop_stack_2( | |
| 748 VerificationType::double2_type(), | |
| 749 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 750 current_frame.pop_stack( | |
| 751 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 752 atype = current_frame.pop_stack( | |
| 753 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 754 if (!atype.is_double_array()) { | |
| 755 verify_error(bci, bad_type_msg, "dastore"); | |
| 756 return; | |
| 757 } | |
| 758 no_control_flow = false; break; | |
| 759 case Bytecodes::_aastore : | |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
kamg
parents:
1678
diff
changeset
|
760 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 761 type2 = current_frame.pop_stack( |
| 762 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 763 atype = current_frame.pop_stack( | |
| 764 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 765 // more type-checking is done at runtime | |
| 766 if (!atype.is_reference_array()) { | |
| 767 verify_error(bci, bad_type_msg, "aastore"); | |
| 768 return; | |
| 769 } | |
| 770 // 4938384: relaxed constraint in JVMS 3nd edition. | |
| 771 no_control_flow = false; break; | |
| 772 case Bytecodes::_pop : | |
| 773 current_frame.pop_stack( | |
| 774 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 775 no_control_flow = false; break; | |
| 776 case Bytecodes::_pop2 : | |
| 777 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 778 if (type.is_category1()) { | |
| 779 current_frame.pop_stack( | |
| 780 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 781 } else if (type.is_category2_2nd()) { | |
| 782 current_frame.pop_stack( | |
| 783 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 784 } else { | |
| 785 verify_error(bci, bad_type_msg, "pop2"); | |
| 786 return; | |
| 787 } | |
| 788 no_control_flow = false; break; | |
| 789 case Bytecodes::_dup : | |
| 790 type = current_frame.pop_stack( | |
| 791 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 792 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 793 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 794 no_control_flow = false; break; | |
| 795 case Bytecodes::_dup_x1 : | |
| 796 type = current_frame.pop_stack( | |
| 797 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 798 type2 = current_frame.pop_stack( | |
| 799 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 800 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 801 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 802 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 803 no_control_flow = false; break; | |
| 804 case Bytecodes::_dup_x2 : | |
| 805 { | |
| 806 VerificationType type3; | |
| 807 type = current_frame.pop_stack( | |
| 808 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 809 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 810 if (type2.is_category1()) { | |
| 811 type3 = current_frame.pop_stack( | |
| 812 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 813 } else if (type2.is_category2_2nd()) { | |
| 814 type3 = current_frame.pop_stack( | |
| 815 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 816 } else { | |
| 817 verify_error(bci, bad_type_msg, "dup_x2"); | |
| 818 return; | |
| 819 } | |
| 820 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 821 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 822 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 823 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 824 no_control_flow = false; break; | |
| 825 } | |
| 826 case Bytecodes::_dup2 : | |
| 827 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 828 if (type.is_category1()) { | |
| 829 type2 = current_frame.pop_stack( | |
| 830 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 831 } else if (type.is_category2_2nd()) { | |
| 832 type2 = current_frame.pop_stack( | |
| 833 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 834 } else { | |
| 835 verify_error(bci, bad_type_msg, "dup2"); | |
| 836 return; | |
| 837 } | |
| 838 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 839 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 840 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 841 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 842 no_control_flow = false; break; | |
| 843 case Bytecodes::_dup2_x1 : | |
| 844 { | |
| 845 VerificationType type3; | |
| 846 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 847 if (type.is_category1()) { | |
| 848 type2 = current_frame.pop_stack( | |
| 849 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 850 } else if(type.is_category2_2nd()) { | |
| 851 type2 = current_frame.pop_stack | |
| 852 (VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 853 } else { | |
| 854 verify_error(bci, bad_type_msg, "dup2_x1"); | |
| 855 return; | |
| 856 } | |
| 857 type3 = current_frame.pop_stack( | |
| 858 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 859 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 860 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 861 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 862 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 863 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 864 no_control_flow = false; break; | |
| 865 } | |
| 866 case Bytecodes::_dup2_x2 : | |
| 867 { | |
| 868 VerificationType type3, type4; | |
| 869 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 870 if (type.is_category1()) { | |
| 871 type2 = current_frame.pop_stack( | |
| 872 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 873 } else if (type.is_category2_2nd()) { | |
| 874 type2 = current_frame.pop_stack( | |
| 875 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 876 } else { | |
| 877 verify_error(bci, bad_type_msg, "dup2_x2"); | |
| 878 return; | |
| 879 } | |
| 880 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 881 if (type3.is_category1()) { | |
| 882 type4 = current_frame.pop_stack( | |
| 883 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 884 } else if (type3.is_category2_2nd()) { | |
| 885 type4 = current_frame.pop_stack( | |
| 886 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 887 } else { | |
| 888 verify_error(bci, bad_type_msg, "dup2_x2"); | |
| 889 return; | |
| 890 } | |
| 891 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 892 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 893 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
| 894 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 895 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 896 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 897 no_control_flow = false; break; | |
| 898 } | |
| 899 case Bytecodes::_swap : | |
| 900 type = current_frame.pop_stack( | |
| 901 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 902 type2 = current_frame.pop_stack( | |
| 903 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 904 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 905 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 906 no_control_flow = false; break; | |
| 907 case Bytecodes::_iadd : | |
| 908 case Bytecodes::_isub : | |
| 909 case Bytecodes::_imul : | |
| 910 case Bytecodes::_idiv : | |
| 911 case Bytecodes::_irem : | |
| 912 case Bytecodes::_ishl : | |
| 913 case Bytecodes::_ishr : | |
| 914 case Bytecodes::_iushr : | |
| 915 case Bytecodes::_ior : | |
| 916 case Bytecodes::_ixor : | |
| 917 case Bytecodes::_iand : | |
| 918 current_frame.pop_stack( | |
| 919 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 920 // fall through | |
| 921 case Bytecodes::_ineg : | |
| 922 current_frame.pop_stack( | |
| 923 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 924 current_frame.push_stack( | |
| 925 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 926 no_control_flow = false; break; | |
| 927 case Bytecodes::_ladd : | |
| 928 case Bytecodes::_lsub : | |
| 929 case Bytecodes::_lmul : | |
| 930 case Bytecodes::_ldiv : | |
| 931 case Bytecodes::_lrem : | |
| 932 case Bytecodes::_land : | |
| 933 case Bytecodes::_lor : | |
| 934 case Bytecodes::_lxor : | |
| 935 current_frame.pop_stack_2( | |
| 936 VerificationType::long2_type(), | |
| 937 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 938 // fall through | |
| 939 case Bytecodes::_lneg : | |
| 940 current_frame.pop_stack_2( | |
| 941 VerificationType::long2_type(), | |
| 942 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 943 current_frame.push_stack_2( | |
| 944 VerificationType::long_type(), | |
| 945 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 946 no_control_flow = false; break; | |
| 947 case Bytecodes::_lshl : | |
| 948 case Bytecodes::_lshr : | |
| 949 case Bytecodes::_lushr : | |
| 950 current_frame.pop_stack( | |
| 951 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 952 current_frame.pop_stack_2( | |
| 953 VerificationType::long2_type(), | |
| 954 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 955 current_frame.push_stack_2( | |
| 956 VerificationType::long_type(), | |
| 957 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 958 no_control_flow = false; break; | |
| 959 case Bytecodes::_fadd : | |
| 960 case Bytecodes::_fsub : | |
| 961 case Bytecodes::_fmul : | |
| 962 case Bytecodes::_fdiv : | |
| 963 case Bytecodes::_frem : | |
| 964 current_frame.pop_stack( | |
| 965 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 966 // fall through | |
| 967 case Bytecodes::_fneg : | |
| 968 current_frame.pop_stack( | |
| 969 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 970 current_frame.push_stack( | |
| 971 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 972 no_control_flow = false; break; | |
| 973 case Bytecodes::_dadd : | |
| 974 case Bytecodes::_dsub : | |
| 975 case Bytecodes::_dmul : | |
| 976 case Bytecodes::_ddiv : | |
| 977 case Bytecodes::_drem : | |
| 978 current_frame.pop_stack_2( | |
| 979 VerificationType::double2_type(), | |
| 980 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 981 // fall through | |
| 982 case Bytecodes::_dneg : | |
| 983 current_frame.pop_stack_2( | |
| 984 VerificationType::double2_type(), | |
| 985 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 986 current_frame.push_stack_2( | |
| 987 VerificationType::double_type(), | |
| 988 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 989 no_control_flow = false; break; | |
| 990 case Bytecodes::_iinc : | |
| 991 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 992 no_control_flow = false; break; | |
| 993 case Bytecodes::_i2l : | |
| 994 type = current_frame.pop_stack( | |
| 995 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 996 current_frame.push_stack_2( | |
| 997 VerificationType::long_type(), | |
| 998 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 999 no_control_flow = false; break; | |
| 1000 case Bytecodes::_l2i : | |
| 1001 current_frame.pop_stack_2( | |
| 1002 VerificationType::long2_type(), | |
| 1003 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1004 current_frame.push_stack( | |
| 1005 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1006 no_control_flow = false; break; | |
| 1007 case Bytecodes::_i2f : | |
| 1008 current_frame.pop_stack( | |
| 1009 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1010 current_frame.push_stack( | |
| 1011 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1012 no_control_flow = false; break; | |
| 1013 case Bytecodes::_i2d : | |
| 1014 current_frame.pop_stack( | |
| 1015 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1016 current_frame.push_stack_2( | |
| 1017 VerificationType::double_type(), | |
| 1018 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1019 no_control_flow = false; break; | |
| 1020 case Bytecodes::_l2f : | |
| 1021 current_frame.pop_stack_2( | |
| 1022 VerificationType::long2_type(), | |
| 1023 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1024 current_frame.push_stack( | |
| 1025 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1026 no_control_flow = false; break; | |
| 1027 case Bytecodes::_l2d : | |
| 1028 current_frame.pop_stack_2( | |
| 1029 VerificationType::long2_type(), | |
| 1030 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1031 current_frame.push_stack_2( | |
| 1032 VerificationType::double_type(), | |
| 1033 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1034 no_control_flow = false; break; | |
| 1035 case Bytecodes::_f2i : | |
| 1036 current_frame.pop_stack( | |
| 1037 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1038 current_frame.push_stack( | |
| 1039 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1040 no_control_flow = false; break; | |
| 1041 case Bytecodes::_f2l : | |
| 1042 current_frame.pop_stack( | |
| 1043 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1044 current_frame.push_stack_2( | |
| 1045 VerificationType::long_type(), | |
| 1046 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1047 no_control_flow = false; break; | |
| 1048 case Bytecodes::_f2d : | |
| 1049 current_frame.pop_stack( | |
| 1050 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1051 current_frame.push_stack_2( | |
| 1052 VerificationType::double_type(), | |
| 1053 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1054 no_control_flow = false; break; | |
| 1055 case Bytecodes::_d2i : | |
| 1056 current_frame.pop_stack_2( | |
| 1057 VerificationType::double2_type(), | |
| 1058 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1059 current_frame.push_stack( | |
| 1060 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1061 no_control_flow = false; break; | |
| 1062 case Bytecodes::_d2l : | |
| 1063 current_frame.pop_stack_2( | |
| 1064 VerificationType::double2_type(), | |
| 1065 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1066 current_frame.push_stack_2( | |
| 1067 VerificationType::long_type(), | |
| 1068 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1069 no_control_flow = false; break; | |
| 1070 case Bytecodes::_d2f : | |
| 1071 current_frame.pop_stack_2( | |
| 1072 VerificationType::double2_type(), | |
| 1073 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1074 current_frame.push_stack( | |
| 1075 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1076 no_control_flow = false; break; | |
| 1077 case Bytecodes::_i2b : | |
| 1078 case Bytecodes::_i2c : | |
| 1079 case Bytecodes::_i2s : | |
| 1080 current_frame.pop_stack( | |
| 1081 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1082 current_frame.push_stack( | |
| 1083 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1084 no_control_flow = false; break; | |
| 1085 case Bytecodes::_lcmp : | |
| 1086 current_frame.pop_stack_2( | |
| 1087 VerificationType::long2_type(), | |
| 1088 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1089 current_frame.pop_stack_2( | |
| 1090 VerificationType::long2_type(), | |
| 1091 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1092 current_frame.push_stack( | |
| 1093 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1094 no_control_flow = false; break; | |
| 1095 case Bytecodes::_fcmpl : | |
| 1096 case Bytecodes::_fcmpg : | |
| 1097 current_frame.pop_stack( | |
| 1098 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1099 current_frame.pop_stack( | |
| 1100 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1101 current_frame.push_stack( | |
| 1102 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1103 no_control_flow = false; break; | |
| 1104 case Bytecodes::_dcmpl : | |
| 1105 case Bytecodes::_dcmpg : | |
| 1106 current_frame.pop_stack_2( | |
| 1107 VerificationType::double2_type(), | |
| 1108 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1109 current_frame.pop_stack_2( | |
| 1110 VerificationType::double2_type(), | |
| 1111 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1112 current_frame.push_stack( | |
| 1113 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1114 no_control_flow = false; break; | |
| 1115 case Bytecodes::_if_icmpeq: | |
| 1116 case Bytecodes::_if_icmpne: | |
| 1117 case Bytecodes::_if_icmplt: | |
| 1118 case Bytecodes::_if_icmpge: | |
| 1119 case Bytecodes::_if_icmpgt: | |
| 1120 case Bytecodes::_if_icmple: | |
| 1121 current_frame.pop_stack( | |
| 1122 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1123 // fall through | |
| 1124 case Bytecodes::_ifeq: | |
| 1125 case Bytecodes::_ifne: | |
| 1126 case Bytecodes::_iflt: | |
| 1127 case Bytecodes::_ifge: | |
| 1128 case Bytecodes::_ifgt: | |
| 1129 case Bytecodes::_ifle: | |
| 1130 current_frame.pop_stack( | |
| 1131 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1132 target = bcs.dest(); | |
| 1133 stackmap_table.check_jump_target( | |
| 1134 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1135 no_control_flow = false; break; | |
| 1136 case Bytecodes::_if_acmpeq : | |
| 1137 case Bytecodes::_if_acmpne : | |
| 1138 current_frame.pop_stack( | |
| 1139 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1140 // fall through | |
| 1141 case Bytecodes::_ifnull : | |
| 1142 case Bytecodes::_ifnonnull : | |
| 1143 current_frame.pop_stack( | |
| 1144 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1145 target = bcs.dest(); | |
| 1146 stackmap_table.check_jump_target | |
| 1147 (¤t_frame, target, CHECK_VERIFY(this)); | |
| 1148 no_control_flow = false; break; | |
| 1149 case Bytecodes::_goto : | |
| 1150 target = bcs.dest(); | |
| 1151 stackmap_table.check_jump_target( | |
| 1152 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1153 no_control_flow = true; break; | |
| 1154 case Bytecodes::_goto_w : | |
| 1155 target = bcs.dest_w(); | |
| 1156 stackmap_table.check_jump_target( | |
| 1157 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1158 no_control_flow = true; break; | |
| 1159 case Bytecodes::_tableswitch : | |
| 1160 case Bytecodes::_lookupswitch : | |
| 1161 verify_switch( | |
| 1162 &bcs, code_length, code_data, ¤t_frame, | |
| 1163 &stackmap_table, CHECK_VERIFY(this)); | |
| 1164 no_control_flow = true; break; | |
| 1165 case Bytecodes::_ireturn : | |
| 1166 type = current_frame.pop_stack( | |
| 1167 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1168 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1169 no_control_flow = true; break; | |
| 1170 case Bytecodes::_lreturn : | |
| 1171 type2 = current_frame.pop_stack( | |
| 1172 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1173 type = current_frame.pop_stack( | |
| 1174 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1175 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1176 no_control_flow = true; break; | |
| 1177 case Bytecodes::_freturn : | |
| 1178 type = current_frame.pop_stack( | |
| 1179 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1180 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1181 no_control_flow = true; break; | |
| 1182 case Bytecodes::_dreturn : | |
| 1183 type2 = current_frame.pop_stack( | |
| 1184 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1185 type = current_frame.pop_stack( | |
| 1186 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1187 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1188 no_control_flow = true; break; | |
| 1189 case Bytecodes::_areturn : | |
| 1190 type = current_frame.pop_stack( | |
| 1191 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1192 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1193 no_control_flow = true; break; | |
| 1194 case Bytecodes::_return : | |
| 1195 if (return_type != VerificationType::bogus_type()) { | |
| 1196 verify_error(bci, "Method expects no return value"); | |
| 1197 return; | |
| 1198 } | |
| 1199 // Make sure "this" has been initialized if current method is an | |
| 1200 // <init> | |
| 1201 if (_method->name() == vmSymbols::object_initializer_name() && | |
| 1202 current_frame.flag_this_uninit()) { | |
| 1203 verify_error(bci, | |
| 1204 "Constructor must call super() or this() before return"); | |
| 1205 return; | |
| 1206 } | |
| 1207 no_control_flow = true; break; | |
| 1208 case Bytecodes::_getstatic : | |
| 1209 case Bytecodes::_putstatic : | |
| 1210 case Bytecodes::_getfield : | |
| 1211 case Bytecodes::_putfield : | |
| 1212 verify_field_instructions( | |
| 1213 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
| 1214 no_control_flow = false; break; | |
| 1215 case Bytecodes::_invokevirtual : | |
| 1216 case Bytecodes::_invokespecial : | |
| 1217 case Bytecodes::_invokestatic : | |
| 1218 verify_invoke_instructions( | |
| 1219 &bcs, code_length, ¤t_frame, | |
| 1220 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1221 no_control_flow = false; break; | |
| 1222 case Bytecodes::_invokeinterface : | |
|
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diff
changeset
|
1223 case Bytecodes::_invokedynamic : |
| 0 | 1224 verify_invoke_instructions( |
| 1225 &bcs, code_length, ¤t_frame, | |
| 1226 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1227 no_control_flow = false; break; | |
| 1228 case Bytecodes::_new : | |
| 1229 { | |
| 1565 | 1230 index = bcs.get_index_u2(); |
| 0 | 1231 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); |
| 1232 VerificationType new_class_type = | |
| 1233 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1234 if (!new_class_type.is_object()) { | |
| 1235 verify_error(bci, "Illegal new instruction"); | |
| 1236 return; | |
| 1237 } | |
| 1238 type = VerificationType::uninitialized_type(bci); | |
| 1239 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1240 no_control_flow = false; break; | |
| 1241 } | |
| 1242 case Bytecodes::_newarray : | |
| 1243 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
| 1244 current_frame.pop_stack( | |
| 1245 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1246 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1247 no_control_flow = false; break; | |
| 1248 case Bytecodes::_anewarray : | |
| 1249 verify_anewarray( | |
| 1565 | 1250 bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
| 0 | 1251 no_control_flow = false; break; |
| 1252 case Bytecodes::_arraylength : | |
| 1253 type = current_frame.pop_stack( | |
| 1254 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
|
134
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diff
changeset
|
1255 if (!(type.is_null() || type.is_array())) { |
| 0 | 1256 verify_error(bci, bad_type_msg, "arraylength"); |
| 1257 } | |
| 1258 current_frame.push_stack( | |
| 1259 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1260 no_control_flow = false; break; | |
| 1261 case Bytecodes::_checkcast : | |
| 1262 { | |
| 1565 | 1263 index = bcs.get_index_u2(); |
| 0 | 1264 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); |
|
1955
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diff
changeset
|
1265 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1266 VerificationType klass_type = cp_index_to_type( |
| 1267 index, cp, CHECK_VERIFY(this)); | |
| 1268 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
| 1269 no_control_flow = false; break; | |
| 1270 } | |
| 1271 case Bytecodes::_instanceof : { | |
| 1565 | 1272 index = bcs.get_index_u2(); |
| 0 | 1273 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); |
|
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diff
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|
1274 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1275 current_frame.push_stack( |
| 1276 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1277 no_control_flow = false; break; | |
| 1278 } | |
| 1279 case Bytecodes::_monitorenter : | |
| 1280 case Bytecodes::_monitorexit : | |
| 1281 current_frame.pop_stack( | |
| 1282 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1283 no_control_flow = false; break; | |
| 1284 case Bytecodes::_multianewarray : | |
| 1285 { | |
| 1565 | 1286 index = bcs.get_index_u2(); |
| 0 | 1287 u2 dim = *(bcs.bcp()+3); |
| 1288 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); | |
| 1289 VerificationType new_array_type = | |
| 1290 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1291 if (!new_array_type.is_array()) { | |
| 1292 verify_error(bci, | |
| 1293 "Illegal constant pool index in multianewarray instruction"); | |
| 1294 return; | |
| 1295 } | |
| 1296 if (dim < 1 || new_array_type.dimensions() < dim) { | |
| 1297 verify_error(bci, | |
| 1298 "Illegal dimension in multianewarray instruction"); | |
| 1299 return; | |
| 1300 } | |
| 1301 for (int i = 0; i < dim; i++) { | |
| 1302 current_frame.pop_stack( | |
| 1303 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1304 } | |
| 1305 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 1306 no_control_flow = false; break; | |
| 1307 } | |
| 1308 case Bytecodes::_athrow : | |
| 1309 type = VerificationType::reference_type( | |
| 1310 vmSymbols::java_lang_Throwable()); | |
| 1311 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
| 1312 no_control_flow = true; break; | |
| 1313 default: | |
| 1314 // We only need to check the valid bytecodes in class file. | |
| 1315 // And jsr and ret are not in the new class file format in JDK1.5. | |
| 1316 verify_error(bci, "Bad instruction"); | |
| 1317 no_control_flow = false; | |
| 1318 return; | |
| 1319 } // end switch | |
| 1320 } // end Merge with the next instruction | |
| 1321 | |
| 1322 // Look for possible jump target in exception handlers and see if it | |
| 1323 // matches current_frame | |
| 1324 if (bci >= ex_min && bci < ex_max) { | |
| 1325 verify_exception_handler_targets( | |
| 1326 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
| 1327 } | |
| 1328 } // end while | |
| 1329 | |
| 1330 // Make sure that control flow does not fall through end of the method | |
| 1331 if (!no_control_flow) { | |
| 1332 verify_error(code_length, "Control flow falls through code end"); | |
| 1333 return; | |
| 1334 } | |
| 1335 } | |
| 1336 | |
| 1337 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { | |
| 1338 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
| 1339 memset(code_data, 0, sizeof(char) * code_length); | |
| 1340 RawBytecodeStream bcs(m); | |
| 1341 | |
| 1342 while (!bcs.is_last_bytecode()) { | |
| 1343 if (bcs.raw_next() != Bytecodes::_illegal) { | |
| 1344 int bci = bcs.bci(); | |
| 1565 | 1345 if (bcs.raw_code() == Bytecodes::_new) { |
| 0 | 1346 code_data[bci] = NEW_OFFSET; |
| 1347 } else { | |
| 1348 code_data[bci] = BYTECODE_OFFSET; | |
| 1349 } | |
| 1350 } else { | |
| 1351 verify_error(bcs.bci(), "Bad instruction"); | |
| 1352 return NULL; | |
| 1353 } | |
| 1354 } | |
| 1355 | |
| 1356 return code_data; | |
| 1357 } | |
| 1358 | |
| 1359 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
| 1360 typeArrayHandle exhandlers (THREAD, _method->exception_table()); | |
| 1361 constantPoolHandle cp (THREAD, _method->constants()); | |
| 1362 | |
| 1363 if (exhandlers() != NULL) { | |
| 1364 for(int i = 0; i < exhandlers->length();) { | |
| 1365 u2 start_pc = exhandlers->int_at(i++); | |
| 1366 u2 end_pc = exhandlers->int_at(i++); | |
| 1367 u2 handler_pc = exhandlers->int_at(i++); | |
| 1368 if (start_pc >= code_length || code_data[start_pc] == 0) { | |
| 1369 class_format_error("Illegal exception table start_pc %d", start_pc); | |
| 1370 return; | |
| 1371 } | |
| 1372 if (end_pc != code_length) { // special case: end_pc == code_length | |
| 1373 if (end_pc > code_length || code_data[end_pc] == 0) { | |
| 1374 class_format_error("Illegal exception table end_pc %d", end_pc); | |
| 1375 return; | |
| 1376 } | |
| 1377 } | |
| 1378 if (handler_pc >= code_length || code_data[handler_pc] == 0) { | |
| 1379 class_format_error("Illegal exception table handler_pc %d", handler_pc); | |
| 1380 return; | |
| 1381 } | |
| 1382 int catch_type_index = exhandlers->int_at(i++); | |
| 1383 if (catch_type_index != 0) { | |
| 1384 VerificationType catch_type = cp_index_to_type( | |
| 1385 catch_type_index, cp, CHECK_VERIFY(this)); | |
| 1386 VerificationType throwable = | |
| 1387 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); | |
| 1388 bool is_subclass = throwable.is_assignable_from( | |
| 1389 catch_type, current_class(), CHECK_VERIFY(this)); | |
| 1390 if (!is_subclass) { | |
| 1391 // 4286534: should throw VerifyError according to recent spec change | |
| 1392 verify_error( | |
| 1393 "Catch type is not a subclass of Throwable in handler %d", | |
| 1394 handler_pc); | |
| 1395 return; | |
| 1396 } | |
| 1397 } | |
| 1398 if (start_pc < min) min = start_pc; | |
| 1399 if (end_pc > max) max = end_pc; | |
| 1400 } | |
| 1401 } | |
| 1402 } | |
| 1403 | |
| 1404 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
| 1405 int localvariable_table_length = _method()->localvariable_table_length(); | |
| 1406 if (localvariable_table_length > 0) { | |
| 1407 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
| 1408 for (int i = 0; i < localvariable_table_length; i++) { | |
| 1409 u2 start_bci = table[i].start_bci; | |
| 1410 u2 length = table[i].length; | |
| 1411 | |
| 1412 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
| 1413 class_format_error( | |
| 1414 "Illegal local variable table start_pc %d", start_bci); | |
| 1415 return; | |
| 1416 } | |
| 1417 u4 end_bci = (u4)(start_bci + length); | |
| 1418 if (end_bci != code_length) { | |
| 1419 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
| 1420 class_format_error( "Illegal local variable table length %d", length); | |
| 1421 return; | |
| 1422 } | |
| 1423 } | |
| 1424 } | |
| 1425 } | |
| 1426 } | |
| 1427 | |
| 1428 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
| 1429 StackMapFrame* current_frame, | |
| 1430 StackMapTable* stackmap_table, | |
| 1431 bool no_control_flow, TRAPS) { | |
| 1432 if (stackmap_index < stackmap_table->get_frame_count()) { | |
| 1433 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
| 1434 if (no_control_flow && this_offset > bci) { | |
| 1435 verify_error(bci, "Expecting a stack map frame"); | |
| 1436 return 0; | |
| 1437 } | |
| 1438 if (this_offset == bci) { | |
| 1439 // See if current stack map can be assigned to the frame in table. | |
| 1440 // current_frame is the stackmap frame got from the last instruction. | |
| 1441 // If matched, current_frame will be updated by this method. | |
| 1442 bool match = stackmap_table->match_stackmap( | |
| 1443 current_frame, this_offset, stackmap_index, | |
| 1444 !no_control_flow, true, CHECK_VERIFY_(this, 0)); | |
| 1445 if (!match) { | |
| 1446 // report type error | |
| 1447 verify_error(bci, "Instruction type does not match stack map"); | |
| 1448 return 0; | |
| 1449 } | |
| 1450 stackmap_index++; | |
| 1451 } else if (this_offset < bci) { | |
| 1452 // current_offset should have met this_offset. | |
| 1453 class_format_error("Bad stack map offset %d", this_offset); | |
| 1454 return 0; | |
| 1455 } | |
| 1456 } else if (no_control_flow) { | |
| 1457 verify_error(bci, "Expecting a stack map frame"); | |
| 1458 return 0; | |
| 1459 } | |
| 1460 return stackmap_index; | |
| 1461 } | |
| 1462 | |
| 1463 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 1464 StackMapTable* stackmap_table, TRAPS) { | |
| 1465 constantPoolHandle cp (THREAD, _method->constants()); | |
| 1466 typeArrayHandle exhandlers (THREAD, _method->exception_table()); | |
| 1467 if (exhandlers() != NULL) { | |
| 1468 for(int i = 0; i < exhandlers->length();) { | |
| 1469 u2 start_pc = exhandlers->int_at(i++); | |
| 1470 u2 end_pc = exhandlers->int_at(i++); | |
| 1471 u2 handler_pc = exhandlers->int_at(i++); | |
| 1472 int catch_type_index = exhandlers->int_at(i++); | |
| 1473 if(bci >= start_pc && bci < end_pc) { | |
| 1474 u1 flags = current_frame->flags(); | |
| 1475 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } | |
| 1476 | |
| 1477 ResourceMark rm(THREAD); | |
| 1478 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); | |
| 1479 if (catch_type_index != 0) { | |
| 1480 // We know that this index refers to a subclass of Throwable | |
| 1481 VerificationType catch_type = cp_index_to_type( | |
| 1482 catch_type_index, cp, CHECK_VERIFY(this)); | |
| 1483 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); | |
| 1484 } else { | |
| 1485 VerificationType throwable = | |
| 1486 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); | |
| 1487 new_frame->push_stack(throwable, CHECK_VERIFY(this)); | |
| 1488 } | |
| 1489 bool match = stackmap_table->match_stackmap( | |
| 1490 new_frame, handler_pc, true, false, CHECK_VERIFY(this)); | |
| 1491 if (!match) { | |
| 1492 verify_error(bci, | |
| 1493 "Stack map does not match the one at exception handler %d", | |
| 1494 handler_pc); | |
| 1495 return; | |
| 1496 } | |
| 1497 } | |
| 1498 } | |
| 1499 } | |
| 1500 } | |
| 1501 | |
| 1502 void ClassVerifier::verify_cp_index(constantPoolHandle cp, int index, TRAPS) { | |
| 1503 int nconstants = cp->length(); | |
| 1504 if ((index <= 0) || (index >= nconstants)) { | |
| 1505 verify_error("Illegal constant pool index %d in class %s", | |
| 1506 index, instanceKlass::cast(cp->pool_holder())->external_name()); | |
| 1507 return; | |
| 1508 } | |
| 1509 } | |
| 1510 | |
| 1511 void ClassVerifier::verify_cp_type( | |
| 1512 int index, constantPoolHandle cp, unsigned int types, TRAPS) { | |
| 1513 | |
| 1514 // In some situations, bytecode rewriting may occur while we're verifying. | |
| 1515 // In this case, a constant pool cache exists and some indices refer to that | |
| 1570 | 1516 // instead. Be sure we don't pick up such indices by accident. |
| 1517 // We must check was_recursively_verified() before we get here. | |
| 1518 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
| 0 | 1519 |
| 1520 verify_cp_index(cp, index, CHECK_VERIFY(this)); | |
| 1521 unsigned int tag = cp->tag_at(index).value(); | |
| 1522 if ((types & (1 << tag)) == 0) { | |
| 1523 verify_error( | |
| 1524 "Illegal type at constant pool entry %d in class %s", | |
| 1525 index, instanceKlass::cast(cp->pool_holder())->external_name()); | |
| 1526 return; | |
| 1527 } | |
| 1528 } | |
| 1529 | |
| 1530 void ClassVerifier::verify_cp_class_type( | |
| 1531 int index, constantPoolHandle cp, TRAPS) { | |
| 1532 verify_cp_index(cp, index, CHECK_VERIFY(this)); | |
| 1533 constantTag tag = cp->tag_at(index); | |
| 1534 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1535 verify_error("Illegal type at constant pool entry %d in class %s", | |
| 1536 index, instanceKlass::cast(cp->pool_holder())->external_name()); | |
| 1537 return; | |
| 1538 } | |
| 1539 } | |
| 1540 | |
| 1541 void ClassVerifier::format_error_message( | |
| 1542 const char* fmt, int offset, va_list va) { | |
| 1543 ResourceMark rm(_thread); | |
| 1544 stringStream message(_message, _message_buffer_len); | |
| 1545 message.vprint(fmt, va); | |
| 1546 if (!_method.is_null()) { | |
| 1547 message.print(" in method %s", _method->name_and_sig_as_C_string()); | |
| 1548 } | |
| 1549 if (offset != -1) { | |
| 1550 message.print(" at offset %d", offset); | |
| 1551 } | |
| 1552 } | |
| 1553 | |
| 1554 void ClassVerifier::verify_error(u2 offset, const char* fmt, ...) { | |
| 1555 _exception_type = vmSymbols::java_lang_VerifyError(); | |
| 1556 va_list va; | |
| 1557 va_start(va, fmt); | |
| 1558 format_error_message(fmt, offset, va); | |
| 1559 va_end(va); | |
| 1560 } | |
| 1561 | |
| 1562 void ClassVerifier::verify_error(const char* fmt, ...) { | |
| 1563 _exception_type = vmSymbols::java_lang_VerifyError(); | |
| 1564 va_list va; | |
| 1565 va_start(va, fmt); | |
| 1566 format_error_message(fmt, -1, va); | |
| 1567 va_end(va); | |
| 1568 } | |
| 1569 | |
| 1570 void ClassVerifier::class_format_error(const char* msg, ...) { | |
| 1571 _exception_type = vmSymbols::java_lang_ClassFormatError(); | |
| 1572 va_list va; | |
| 1573 va_start(va, msg); | |
| 1574 format_error_message(msg, -1, va); | |
| 1575 va_end(va); | |
| 1576 } | |
| 1577 | |
| 1578 klassOop ClassVerifier::load_class(symbolHandle name, TRAPS) { | |
| 1579 // Get current loader and protection domain first. | |
| 1580 oop loader = current_class()->class_loader(); | |
| 1581 oop protection_domain = current_class()->protection_domain(); | |
| 1582 | |
| 1583 return SystemDictionary::resolve_or_fail( | |
| 1584 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
| 1585 true, CHECK_NULL); | |
| 1586 } | |
| 1587 | |
| 1588 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
| 1589 klassOop target_class, | |
| 1590 symbolOop field_name, | |
| 1591 symbolOop field_sig, | |
| 1592 bool is_method) { | |
| 1593 No_Safepoint_Verifier nosafepoint; | |
| 1594 | |
| 1595 // If target class isn't a super class of this class, we don't worry about this case | |
| 1596 if (!this_class->is_subclass_of(target_class)) { | |
| 1597 return false; | |
| 1598 } | |
| 1599 // Check if the specified method or field is protected | |
| 1600 instanceKlass* target_instance = instanceKlass::cast(target_class); | |
| 1601 fieldDescriptor fd; | |
| 1602 if (is_method) { | |
| 1603 methodOop m = target_instance->uncached_lookup_method(field_name, field_sig); | |
| 1604 if (m != NULL && m->is_protected()) { | |
| 1605 if (!this_class->is_same_class_package(m->method_holder())) { | |
| 1606 return true; | |
| 1607 } | |
| 1608 } | |
| 1609 } else { | |
| 1610 klassOop member_klass = target_instance->find_field(field_name, field_sig, &fd); | |
| 1611 if(member_klass != NULL && fd.is_protected()) { | |
| 1612 if (!this_class->is_same_class_package(member_klass)) { | |
| 1613 return true; | |
| 1614 } | |
| 1615 } | |
| 1616 } | |
| 1617 return false; | |
| 1618 } | |
| 1619 | |
| 1620 void ClassVerifier::verify_ldc( | |
| 1621 int opcode, u2 index, StackMapFrame *current_frame, | |
| 1622 constantPoolHandle cp, u2 bci, TRAPS) { | |
| 1623 verify_cp_index(cp, index, CHECK_VERIFY(this)); | |
| 1624 constantTag tag = cp->tag_at(index); | |
| 1625 unsigned int types; | |
| 1626 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
| 1627 if (!tag.is_unresolved_string() && !tag.is_unresolved_klass()) { | |
| 1628 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) | |
| 1602 | 1629 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
| 1630 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
| 1631 // Note: The class file parser already verified the legality of | |
| 1632 // MethodHandle and MethodType constants. | |
| 0 | 1633 verify_cp_type(index, cp, types, CHECK_VERIFY(this)); |
| 1634 } | |
| 1635 } else { | |
| 1636 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
| 1637 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
| 1638 verify_cp_type(index, cp, types, CHECK_VERIFY(this)); | |
| 1639 } | |
|
431
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6653858: dynamic languages need to be able to load anonymous classes
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parents:
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diff
changeset
|
1640 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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parents:
1678
diff
changeset
|
1641 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
|
431
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6653858: dynamic languages need to be able to load anonymous classes
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parents:
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changeset
|
1642 } else if (tag.is_string() || tag.is_unresolved_string()) { |
| 0 | 1643 current_frame->push_stack( |
| 1644 VerificationType::reference_type( | |
| 1645 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
| 1646 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1647 current_frame->push_stack( | |
| 1648 VerificationType::reference_type( | |
| 1649 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
| 1650 } else if (tag.is_int()) { | |
| 1651 current_frame->push_stack( | |
| 1652 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1653 } else if (tag.is_float()) { | |
| 1654 current_frame->push_stack( | |
| 1655 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1656 } else if (tag.is_double()) { | |
| 1657 current_frame->push_stack_2( | |
| 1658 VerificationType::double_type(), | |
| 1659 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1660 } else if (tag.is_long()) { | |
| 1661 current_frame->push_stack_2( | |
| 1662 VerificationType::long_type(), | |
| 1663 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1602 | 1664 } else if (tag.is_method_handle()) { |
| 1665 current_frame->push_stack( | |
| 1666 VerificationType::reference_type( | |
| 1667 vmSymbols::java_dyn_MethodHandle()), CHECK_VERIFY(this)); | |
| 1668 } else if (tag.is_method_type()) { | |
| 1669 current_frame->push_stack( | |
| 1670 VerificationType::reference_type( | |
| 1671 vmSymbols::java_dyn_MethodType()), CHECK_VERIFY(this)); | |
| 0 | 1672 } else { |
| 1673 verify_error(bci, "Invalid index in ldc"); | |
| 1674 return; | |
| 1675 } | |
| 1676 } | |
| 1677 | |
| 1678 void ClassVerifier::verify_switch( | |
| 1679 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 1680 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
| 1681 int bci = bcs->bci(); | |
| 1682 address bcp = bcs->bcp(); | |
| 1683 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
| 1684 | |
| 1685 // 4639449 & 4647081: padding bytes must be 0 | |
| 1686 u2 padding_offset = 1; | |
| 1687 while ((bcp + padding_offset) < aligned_bcp) { | |
| 1688 if(*(bcp + padding_offset) != 0) { | |
| 1689 verify_error(bci, "Nonzero padding byte in lookswitch or tableswitch"); | |
| 1690 return; | |
| 1691 } | |
| 1692 padding_offset++; | |
| 1693 } | |
| 1694 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); | |
| 1695 int keys, delta; | |
| 1696 current_frame->pop_stack( | |
| 1697 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1565 | 1698 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
| 0 | 1699 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
| 1700 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
| 1701 if (low > high) { | |
| 1702 verify_error(bci, | |
| 1703 "low must be less than or equal to high in tableswitch"); | |
| 1704 return; | |
| 1705 } | |
| 1706 keys = high - low + 1; | |
| 1707 if (keys < 0) { | |
| 1708 verify_error(bci, "too many keys in tableswitch"); | |
| 1709 return; | |
| 1710 } | |
| 1711 delta = 1; | |
| 1712 } else { | |
| 1713 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
| 1714 if (keys < 0) { | |
| 1715 verify_error(bci, "number of keys in lookupswitch less than 0"); | |
| 1716 return; | |
| 1717 } | |
| 1718 delta = 2; | |
| 1719 // Make sure that the lookupswitch items are sorted | |
| 1720 for (int i = 0; i < (keys - 1); i++) { | |
| 1721 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
| 1722 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
| 1723 if (this_key >= next_key) { | |
| 1724 verify_error(bci, "Bad lookupswitch instruction"); | |
| 1725 return; | |
| 1726 } | |
| 1727 } | |
| 1728 } | |
| 1729 int target = bci + default_offset; | |
| 1730 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
| 1731 for (int i = 0; i < keys; i++) { | |
| 1732 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); | |
| 1733 stackmap_table->check_jump_target( | |
| 1734 current_frame, target, CHECK_VERIFY(this)); | |
| 1735 } | |
| 1736 } | |
| 1737 | |
| 1738 bool ClassVerifier::name_in_supers( | |
| 1739 symbolOop ref_name, instanceKlassHandle current) { | |
| 1740 klassOop super = current->super(); | |
| 1741 while (super != NULL) { | |
| 1742 if (super->klass_part()->name() == ref_name) { | |
| 1743 return true; | |
| 1744 } | |
| 1745 super = super->klass_part()->super(); | |
| 1746 } | |
| 1747 return false; | |
| 1748 } | |
| 1749 | |
| 1750 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
| 1751 StackMapFrame* current_frame, | |
| 1752 constantPoolHandle cp, | |
| 1753 TRAPS) { | |
| 1565 | 1754 u2 index = bcs->get_index_u2(); |
| 0 | 1755 verify_cp_type(index, cp, 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); |
| 1756 | |
| 1757 // Get field name and signature | |
| 1758 symbolHandle field_name = symbolHandle(THREAD, cp->name_ref_at(index)); | |
| 1759 symbolHandle field_sig = symbolHandle(THREAD, cp->signature_ref_at(index)); | |
| 1760 | |
| 1761 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
| 1762 class_format_error( | |
| 1763 "Invalid signature for field in class %s referenced " | |
| 1764 "from constant pool index %d", _klass->external_name(), index); | |
| 1765 return; | |
| 1766 } | |
| 1767 | |
| 1768 // Get referenced class type | |
| 1769 VerificationType ref_class_type = cp_ref_index_to_type( | |
| 1770 index, cp, CHECK_VERIFY(this)); | |
| 1771 if (!ref_class_type.is_object()) { | |
| 1772 verify_error( | |
| 1773 "Expecting reference to class in class %s at constant pool index %d", | |
| 1774 _klass->external_name(), index); | |
| 1775 return; | |
| 1776 } | |
| 1777 VerificationType target_class_type = ref_class_type; | |
| 1778 | |
| 1779 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 1780 "buffer type must match VerificationType size"); | |
| 1781 uintptr_t field_type_buffer[2]; | |
| 1782 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
| 1783 // If we make a VerificationType[2] array directly, the compiler calls | |
| 1784 // to the c-runtime library to do the allocation instead of just | |
| 1785 // stack allocating it. Plus it would run constructors. This shows up | |
| 1786 // in performance profiles. | |
| 1787 | |
| 1788 SignatureStream sig_stream(field_sig, false); | |
| 1789 VerificationType stack_object_type; | |
| 1790 int n = change_sig_to_verificationType( | |
| 1791 &sig_stream, field_type, CHECK_VERIFY(this)); | |
| 1792 u2 bci = bcs->bci(); | |
| 1793 bool is_assignable; | |
| 1565 | 1794 switch (bcs->raw_code()) { |
| 0 | 1795 case Bytecodes::_getstatic: { |
| 1796 for (int i = 0; i < n; i++) { | |
| 1797 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1798 } | |
| 1799 break; | |
| 1800 } | |
| 1801 case Bytecodes::_putstatic: { | |
| 1802 for (int i = n - 1; i >= 0; i--) { | |
| 1803 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1804 } | |
| 1805 break; | |
| 1806 } | |
| 1807 case Bytecodes::_getfield: { | |
| 1808 stack_object_type = current_frame->pop_stack( | |
| 1809 target_class_type, CHECK_VERIFY(this)); | |
| 1810 for (int i = 0; i < n; i++) { | |
| 1811 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1812 } | |
| 1813 goto check_protected; | |
| 1814 } | |
| 1815 case Bytecodes::_putfield: { | |
| 1816 for (int i = n - 1; i >= 0; i--) { | |
| 1817 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1818 } | |
| 1819 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
| 1820 | |
| 1821 // The JVMS 2nd edition allows field initialization before the superclass | |
| 1822 // initializer, if the field is defined within the current class. | |
| 1823 fieldDescriptor fd; | |
| 1824 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
| 1825 target_class_type.equals(current_type()) && | |
| 1826 _klass->find_local_field(field_name(), field_sig(), &fd)) { | |
| 1827 stack_object_type = current_type(); | |
| 1828 } | |
| 1829 is_assignable = target_class_type.is_assignable_from( | |
| 1830 stack_object_type, current_class(), CHECK_VERIFY(this)); | |
| 1831 if (!is_assignable) { | |
| 1832 verify_error(bci, "Bad type on operand stack in putfield"); | |
| 1833 return; | |
| 1834 } | |
| 1835 } | |
| 1836 check_protected: { | |
| 1837 if (_this_type == stack_object_type) | |
| 1838 break; // stack_object_type must be assignable to _current_class_type | |
| 1839 symbolHandle ref_class_name = symbolHandle(THREAD, | |
| 1840 cp->klass_name_at(cp->klass_ref_index_at(index))); | |
| 1841 if (!name_in_supers(ref_class_name(), current_class())) | |
| 1842 // stack_object_type must be assignable to _current_class_type since: | |
| 1843 // 1. stack_object_type must be assignable to ref_class. | |
| 1844 // 2. ref_class must be _current_class or a subclass of it. It can't | |
| 1845 // be a superclass of it. See revised JVMS 5.4.4. | |
| 1846 break; | |
| 1847 | |
| 1848 klassOop ref_class_oop = load_class(ref_class_name, CHECK); | |
| 1849 if (is_protected_access(current_class(), ref_class_oop, field_name(), | |
| 1850 field_sig(), false)) { | |
| 1851 // It's protected access, check if stack object is assignable to | |
| 1852 // current class. | |
| 1853 is_assignable = current_type().is_assignable_from( | |
| 1854 stack_object_type, current_class(), CHECK_VERIFY(this)); | |
| 1855 if (!is_assignable) { | |
| 1856 verify_error(bci, "Bad access to protected data in getfield"); | |
| 1857 return; | |
| 1858 } | |
| 1859 } | |
| 1860 break; | |
| 1861 } | |
| 1862 default: ShouldNotReachHere(); | |
| 1863 } | |
| 1864 } | |
| 1865 | |
| 1866 void ClassVerifier::verify_invoke_init( | |
| 1867 RawBytecodeStream* bcs, VerificationType ref_class_type, | |
| 1868 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, | |
| 1869 constantPoolHandle cp, TRAPS) { | |
| 1870 u2 bci = bcs->bci(); | |
| 1871 VerificationType type = current_frame->pop_stack( | |
| 1872 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1873 if (type == VerificationType::uninitialized_this_type()) { | |
| 1874 // The method must be an <init> method of either this class, or one of its | |
| 1875 // superclasses | |
| 1677 | 1876 if (ref_class_type.name() != current_class()->name() && |
| 1877 !name_in_supers(ref_class_type.name(), current_class())) { | |
| 0 | 1878 verify_error(bci, "Bad <init> method call"); |
| 1879 return; | |
| 1880 } | |
| 1881 current_frame->initialize_object(type, current_type()); | |
| 1882 *this_uninit = true; | |
| 1883 } else if (type.is_uninitialized()) { | |
| 1884 u2 new_offset = type.bci(); | |
| 1885 address new_bcp = bcs->bcp() - bci + new_offset; | |
| 1886 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
| 1887 verify_error(new_offset, "Expecting new instruction"); | |
| 1888 return; | |
| 1889 } | |
| 1890 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
| 1891 verify_cp_class_type(new_class_index, cp, CHECK_VERIFY(this)); | |
| 1892 | |
| 1893 // The method must be an <init> method of the indicated class | |
| 1894 VerificationType new_class_type = cp_index_to_type( | |
| 1895 new_class_index, cp, CHECK_VERIFY(this)); | |
| 1896 if (!new_class_type.equals(ref_class_type)) { | |
| 1897 verify_error(bci, "Call to wrong <init> method"); | |
| 1898 return; | |
| 1899 } | |
| 1900 // According to the VM spec, if the referent class is a superclass of the | |
| 1901 // current class, and is in a different runtime package, and the method is | |
| 1902 // protected, then the objectref must be the current class or a subclass | |
| 1903 // of the current class. | |
| 1904 VerificationType objectref_type = new_class_type; | |
| 1905 if (name_in_supers(ref_class_type.name(), current_class())) { | |
| 1906 klassOop ref_klass = load_class( | |
| 1907 ref_class_type.name(), CHECK_VERIFY(this)); | |
| 1908 methodOop m = instanceKlass::cast(ref_klass)->uncached_lookup_method( | |
| 1909 vmSymbols::object_initializer_name(), | |
| 1565 | 1910 cp->signature_ref_at(bcs->get_index_u2())); |
| 0 | 1911 instanceKlassHandle mh(THREAD, m->method_holder()); |
| 1912 if (m->is_protected() && !mh->is_same_class_package(_klass())) { | |
| 1913 bool assignable = current_type().is_assignable_from( | |
| 1914 objectref_type, current_class(), CHECK_VERIFY(this)); | |
| 1915 if (!assignable) { | |
| 1916 verify_error(bci, "Bad access to protected <init> method"); | |
| 1917 return; | |
| 1918 } | |
| 1919 } | |
| 1920 } | |
| 1921 current_frame->initialize_object(type, new_class_type); | |
| 1922 } else { | |
| 1923 verify_error(bci, "Bad operand type when invoking <init>"); | |
| 1924 return; | |
| 1925 } | |
| 1926 } | |
| 1927 | |
| 1928 void ClassVerifier::verify_invoke_instructions( | |
| 1929 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 1930 bool *this_uninit, VerificationType return_type, | |
| 1931 constantPoolHandle cp, TRAPS) { | |
| 1932 // Make sure the constant pool item is the right type | |
| 1565 | 1933 u2 index = bcs->get_index_u2(); |
| 1934 Bytecodes::Code opcode = bcs->raw_code(); | |
| 0 | 1935 unsigned int types = (opcode == Bytecodes::_invokeinterface |
| 1936 ? 1 << JVM_CONSTANT_InterfaceMethodref | |
|
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1937 : opcode == Bytecodes::_invokedynamic |
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1938 ? ((AllowTransitionalJSR292 ? 1 << JVM_CONSTANT_NameAndType : 0) |
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1939 |1 << JVM_CONSTANT_InvokeDynamic) |
| 0 | 1940 : 1 << JVM_CONSTANT_Methodref); |
| 1941 verify_cp_type(index, cp, types, CHECK_VERIFY(this)); | |
| 1942 | |
| 1943 // Get method name and signature | |
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1944 symbolHandle method_name(THREAD, cp->name_ref_at(index)); |
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1945 symbolHandle method_sig(THREAD, cp->signature_ref_at(index)); |
| 0 | 1946 |
| 1947 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
| 1948 class_format_error( | |
| 1949 "Invalid method signature in class %s referenced " | |
| 1950 "from constant pool index %d", _klass->external_name(), index); | |
| 1951 return; | |
| 1952 } | |
| 1953 | |
| 1954 // Get referenced class type | |
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1955 VerificationType ref_class_type; |
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1956 if (opcode == Bytecodes::_invokedynamic) { |
| 1602 | 1957 if (!EnableInvokeDynamic || |
| 1958 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
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1959 class_format_error( |
| 1602 | 1960 (!EnableInvokeDynamic ? |
| 1961 "invokedynamic instructions not enabled in this JVM" : | |
| 1962 "invokedynamic instructions not supported by this class file version"), | |
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1963 _klass->external_name()); |
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1964 return; |
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1965 } |
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1966 } else { |
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1967 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
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1968 } |
| 0 | 1969 |
| 1970 // For a small signature length, we just allocate 128 bytes instead | |
| 1971 // of parsing the signature once to find its size. | |
| 1972 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
| 1973 // longs/doubles to be consertive. | |
| 1974 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 1975 "buffer type must match VerificationType size"); | |
| 1976 uintptr_t on_stack_sig_types_buffer[128]; | |
| 1977 // If we make a VerificationType[128] array directly, the compiler calls | |
| 1978 // to the c-runtime library to do the allocation instead of just | |
| 1979 // stack allocating it. Plus it would run constructors. This shows up | |
| 1980 // in performance profiles. | |
| 1981 | |
| 1982 VerificationType* sig_types; | |
| 1983 int size = (method_sig->utf8_length() - 3) * 2; | |
| 1984 if (size > 128) { | |
| 1985 // Long and double occupies two slots here. | |
| 1986 ArgumentSizeComputer size_it(method_sig); | |
| 1987 size = size_it.size(); | |
| 1988 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
| 1989 } else{ | |
| 1990 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
| 1991 } | |
| 1992 SignatureStream sig_stream(method_sig); | |
| 1993 int sig_i = 0; | |
| 1994 while (!sig_stream.at_return_type()) { | |
| 1995 sig_i += change_sig_to_verificationType( | |
| 1996 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
| 1997 sig_stream.next(); | |
| 1998 } | |
| 1999 int nargs = sig_i; | |
| 2000 | |
| 2001 #ifdef ASSERT | |
| 2002 { | |
| 2003 ArgumentSizeComputer size_it(method_sig); | |
| 2004 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
| 2005 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
| 2006 } | |
| 2007 #endif | |
| 2008 | |
| 2009 // Check instruction operands | |
| 2010 u2 bci = bcs->bci(); | |
| 2011 if (opcode == Bytecodes::_invokeinterface) { | |
| 2012 address bcp = bcs->bcp(); | |
| 2013 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
| 2014 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
| 2015 // the difference between the size of the operand stack before and after the instruction | |
| 2016 // executes. | |
| 2017 if (*(bcp+3) != (nargs+1)) { | |
| 2018 verify_error(bci, "Inconsistent args count operand in invokeinterface"); | |
| 2019 return; | |
| 2020 } | |
| 2021 if (*(bcp+4) != 0) { | |
| 2022 verify_error(bci, "Fourth operand byte of invokeinterface must be zero"); | |
| 2023 return; | |
| 2024 } | |
| 2025 } | |
| 2026 | |
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2027 if (opcode == Bytecodes::_invokedynamic) { |
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2028 address bcp = bcs->bcp(); |
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2029 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
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2030 verify_error(bci, "Third and fourth operand bytes of invokedynamic must be zero"); |
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2031 return; |
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2032 } |
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2033 } |
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2034 |
| 0 | 2035 if (method_name->byte_at(0) == '<') { |
| 2036 // Make sure <init> can only be invoked by invokespecial | |
| 2037 if (opcode != Bytecodes::_invokespecial || | |
| 2038 method_name() != vmSymbols::object_initializer_name()) { | |
| 2039 verify_error(bci, "Illegal call to internal method"); | |
| 2040 return; | |
| 2041 } | |
| 2042 } else if (opcode == Bytecodes::_invokespecial | |
| 2043 && !ref_class_type.equals(current_type()) | |
| 2044 && !ref_class_type.equals(VerificationType::reference_type( | |
| 2045 current_class()->super()->klass_part()->name()))) { | |
| 2046 bool subtype = ref_class_type.is_assignable_from( | |
| 2047 current_type(), current_class(), CHECK_VERIFY(this)); | |
| 2048 if (!subtype) { | |
| 2049 verify_error(bci, "Bad invokespecial instruction: " | |
| 2050 "current class isn't assignable to reference class."); | |
| 2051 return; | |
| 2052 } | |
| 2053 } | |
| 2054 // Match method descriptor with operand stack | |
| 2055 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
| 2056 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
| 2057 } | |
| 2058 // Check objectref on operand stack | |
|
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2059 if (opcode != Bytecodes::_invokestatic && |
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2060 opcode != Bytecodes::_invokedynamic) { |
| 0 | 2061 if (method_name() == vmSymbols::object_initializer_name()) { // <init> method |
| 2062 verify_invoke_init(bcs, ref_class_type, current_frame, | |
| 2063 code_length, this_uninit, cp, CHECK_VERIFY(this)); | |
| 2064 } else { // other methods | |
| 2065 // Ensures that target class is assignable to method class. | |
| 2066 if (opcode == Bytecodes::_invokespecial) { | |
| 2067 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); | |
| 2068 } else if (opcode == Bytecodes::_invokevirtual) { | |
| 2069 VerificationType stack_object_type = | |
| 2070 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2071 if (current_type() != stack_object_type) { | |
| 2072 assert(cp->cache() == NULL, "not rewritten yet"); | |
| 2073 symbolHandle ref_class_name = symbolHandle(THREAD, | |
| 2074 cp->klass_name_at(cp->klass_ref_index_at(index))); | |
| 2075 // See the comments in verify_field_instructions() for | |
| 2076 // the rationale behind this. | |
| 2077 if (name_in_supers(ref_class_name(), current_class())) { | |
| 2078 klassOop ref_class = load_class(ref_class_name, CHECK); | |
| 2079 if (is_protected_access( | |
| 2080 _klass, ref_class, method_name(), method_sig(), true)) { | |
| 2081 // It's protected access, check if stack object is | |
| 2082 // assignable to current class. | |
| 2083 bool is_assignable = current_type().is_assignable_from( | |
| 2084 stack_object_type, current_class(), CHECK_VERIFY(this)); | |
| 2085 if (!is_assignable) { | |
| 2086 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
| 2087 && stack_object_type.is_array() | |
| 2088 && method_name() == vmSymbols::clone_name()) { | |
| 2089 // Special case: arrays pretend to implement public Object | |
| 2090 // clone(). | |
| 2091 } else { | |
| 2092 verify_error(bci, | |
| 2093 "Bad access to protected data in invokevirtual"); | |
| 2094 return; | |
| 2095 } | |
| 2096 } | |
| 2097 } | |
| 2098 } | |
| 2099 } | |
| 2100 } else { | |
| 2101 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
| 2102 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2103 } | |
| 2104 } | |
| 2105 } | |
| 2106 // Push the result type. | |
| 2107 if (sig_stream.type() != T_VOID) { | |
| 2108 if (method_name() == vmSymbols::object_initializer_name()) { | |
| 2109 // <init> method must have a void return type | |
| 2110 verify_error(bci, "Return type must be void in <init> method"); | |
| 2111 return; | |
| 2112 } | |
| 2113 VerificationType return_type[2]; | |
| 2114 int n = change_sig_to_verificationType( | |
| 2115 &sig_stream, return_type, CHECK_VERIFY(this)); | |
| 2116 for (int i = 0; i < n; i++) { | |
| 2117 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
| 2118 } | |
| 2119 } | |
| 2120 } | |
| 2121 | |
| 2122 VerificationType ClassVerifier::get_newarray_type( | |
| 2123 u2 index, u2 bci, TRAPS) { | |
| 2124 const char* from_bt[] = { | |
| 2125 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
| 2126 }; | |
| 2127 if (index < T_BOOLEAN || index > T_LONG) { | |
| 2128 verify_error(bci, "Illegal newarray instruction"); | |
| 2129 return VerificationType::bogus_type(); | |
| 2130 } | |
| 2131 | |
| 2132 // from_bt[index] contains the array signature which has a length of 2 | |
| 2133 symbolHandle sig = oopFactory::new_symbol_handle( | |
| 2134 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); | |
| 2135 return VerificationType::reference_type(sig); | |
| 2136 } | |
| 2137 | |
| 2138 void ClassVerifier::verify_anewarray( | |
| 2139 u2 index, constantPoolHandle cp, StackMapFrame* current_frame, TRAPS) { | |
| 2140 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); | |
| 2141 current_frame->pop_stack( | |
| 2142 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2143 | |
| 2144 VerificationType component_type = | |
| 2145 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 2146 ResourceMark rm(THREAD); | |
| 2147 int length; | |
| 2148 char* arr_sig_str; | |
| 2149 if (component_type.is_array()) { // it's an array | |
| 2150 const char* component_name = component_type.name()->as_utf8(); | |
| 2151 // add one dimension to component | |
| 2152 length = (int)strlen(component_name) + 1; | |
| 2153 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2154 arr_sig_str[0] = '['; | |
| 2155 strncpy(&arr_sig_str[1], component_name, length - 1); | |
| 2156 } else { // it's an object or interface | |
| 2157 const char* component_name = component_type.name()->as_utf8(); | |
| 2158 // add one dimension to component with 'L' prepended and ';' postpended. | |
| 2159 length = (int)strlen(component_name) + 3; | |
| 2160 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2161 arr_sig_str[0] = '['; | |
| 2162 arr_sig_str[1] = 'L'; | |
| 2163 strncpy(&arr_sig_str[2], component_name, length - 2); | |
| 2164 arr_sig_str[length - 1] = ';'; | |
| 2165 } | |
| 2166 symbolHandle arr_sig = oopFactory::new_symbol_handle( | |
| 2167 arr_sig_str, length, CHECK_VERIFY(this)); | |
| 2168 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
| 2169 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 2170 } | |
| 2171 | |
| 2172 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2173 current_frame->get_local( | |
| 2174 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2175 current_frame->push_stack( | |
| 2176 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2177 } | |
| 2178 | |
| 2179 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2180 current_frame->get_local_2( | |
| 2181 index, VerificationType::long_type(), | |
| 2182 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2183 current_frame->push_stack_2( | |
| 2184 VerificationType::long_type(), | |
| 2185 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2186 } | |
| 2187 | |
| 2188 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2189 current_frame->get_local( | |
| 2190 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2191 current_frame->push_stack( | |
| 2192 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2193 } | |
| 2194 | |
| 2195 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2196 current_frame->get_local_2( | |
| 2197 index, VerificationType::double_type(), | |
| 2198 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2199 current_frame->push_stack_2( | |
| 2200 VerificationType::double_type(), | |
| 2201 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2202 } | |
| 2203 | |
| 2204 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2205 VerificationType type = current_frame->get_local( | |
| 2206 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2207 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
| 2208 } | |
| 2209 | |
| 2210 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2211 current_frame->pop_stack( | |
| 2212 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2213 current_frame->set_local( | |
| 2214 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2215 } | |
| 2216 | |
| 2217 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2218 current_frame->pop_stack_2( | |
| 2219 VerificationType::long2_type(), | |
| 2220 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 2221 current_frame->set_local_2( | |
| 2222 index, VerificationType::long_type(), | |
| 2223 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2224 } | |
| 2225 | |
| 2226 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2227 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2228 current_frame->set_local( | |
| 2229 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2230 } | |
| 2231 | |
| 2232 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2233 current_frame->pop_stack_2( | |
| 2234 VerificationType::double2_type(), | |
| 2235 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 2236 current_frame->set_local_2( | |
| 2237 index, VerificationType::double_type(), | |
| 2238 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2239 } | |
| 2240 | |
| 2241 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2242 VerificationType type = current_frame->pop_stack( | |
| 2243 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2244 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2245 } | |
| 2246 | |
| 2247 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2248 VerificationType type = current_frame->get_local( | |
| 2249 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2250 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2251 } | |
| 2252 | |
| 2253 void ClassVerifier::verify_return_value( | |
| 2254 VerificationType return_type, VerificationType type, u2 bci, TRAPS) { | |
| 2255 if (return_type == VerificationType::bogus_type()) { | |
| 2256 verify_error(bci, "Method expects a return value"); | |
| 2257 return; | |
| 2258 } | |
| 2259 bool match = return_type.is_assignable_from(type, _klass, CHECK_VERIFY(this)); | |
| 2260 if (!match) { | |
| 2261 verify_error(bci, "Bad return type"); | |
| 2262 return; | |
| 2263 } | |
| 2264 } |