Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 6118:e17b61ba7bb3
7166498: JVM crash in ClassVerifier
Summary: Fixed raw pointer being used after potential safepoint/GC
Reviewed-by: acorn, fparain, dholmes
| author | kamg |
|---|---|
| date | Mon, 04 Jun 2012 10:22:37 -0400 |
| parents | ed69575596ac |
| children | 9d5f20961bc5 8150fa46d2ed |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2011, 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 | |
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54 #ifdef TARGET_ARCH_arm |
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55 # include "bytes_arm.hpp" |
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56 #endif |
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57 #ifdef TARGET_ARCH_ppc |
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58 # include "bytes_ppc.hpp" |
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59 #endif |
| 0 | 60 |
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61 #define NOFAILOVER_MAJOR_VERSION 51 |
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62 |
| 0 | 63 // Access to external entry for VerifyClassCodes - old byte code verifier |
| 64 | |
| 65 extern "C" { | |
| 66 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
| 67 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
| 68 } | |
| 69 | |
| 70 static void* volatile _verify_byte_codes_fn = NULL; | |
| 71 | |
| 72 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
| 73 | |
| 74 static void* verify_byte_codes_fn() { | |
| 75 if (_verify_byte_codes_fn == NULL) { | |
| 76 void *lib_handle = os::native_java_library(); | |
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77 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
| 0 | 78 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 79 if (func == NULL) { | |
| 80 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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81 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
| 0 | 82 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 83 } | |
| 84 } | |
| 85 return (void*)_verify_byte_codes_fn; | |
| 86 } | |
| 87 | |
| 88 | |
| 89 // Methods in Verifier | |
| 90 | |
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91 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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92 return (class_loader == NULL || !should_verify_class) ? |
| 0 | 93 BytecodeVerificationLocal : BytecodeVerificationRemote; |
| 94 } | |
| 95 | |
| 96 bool Verifier::relax_verify_for(oop loader) { | |
| 97 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 98 bool need_verify = | |
| 99 // verifyAll | |
| 100 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
| 101 // verifyRemote | |
| 102 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
| 103 return !need_verify; | |
| 104 } | |
| 105 | |
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106 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
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107 HandleMark hm; |
| 0 | 108 ResourceMark rm(THREAD); |
| 109 | |
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110 Symbol* exception_name = NULL; |
| 0 | 111 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
| 112 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
| 113 | |
| 114 const char* klassName = klass->external_name(); | |
| 115 | |
| 116 // If the class should be verified, first see if we can use the split | |
| 117 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
| 118 // is set, then call the inference verifier. | |
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119 if (is_eligible_for_verification(klass, should_verify_class)) { |
| 0 | 120 if (TraceClassInitialization) { |
| 121 tty->print_cr("Start class verification for: %s", klassName); | |
| 122 } | |
| 123 if (UseSplitVerifier && | |
| 124 klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { | |
| 125 ClassVerifier split_verifier( | |
| 126 klass, message_buffer, message_buffer_len, THREAD); | |
| 127 split_verifier.verify_class(THREAD); | |
| 128 exception_name = split_verifier.result(); | |
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129 if (klass->major_version() < NOFAILOVER_MAJOR_VERSION && |
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130 FailOverToOldVerifier && !HAS_PENDING_EXCEPTION && |
| 0 | 131 (exception_name == vmSymbols::java_lang_VerifyError() || |
| 132 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
| 133 if (TraceClassInitialization) { | |
| 134 tty->print_cr( | |
| 135 "Fail over class verification to old verifier for: %s", klassName); | |
| 136 } | |
| 137 exception_name = inference_verify( | |
| 138 klass, message_buffer, message_buffer_len, THREAD); | |
| 139 } | |
| 140 } else { | |
| 141 exception_name = inference_verify( | |
| 142 klass, message_buffer, message_buffer_len, THREAD); | |
| 143 } | |
| 144 | |
| 145 if (TraceClassInitialization) { | |
| 146 if (HAS_PENDING_EXCEPTION) { | |
| 147 tty->print("Verification for %s has", klassName); | |
| 148 tty->print_cr(" exception pending %s ", | |
| 149 instanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); | |
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150 } else if (exception_name != NULL) { |
| 0 | 151 tty->print_cr("Verification for %s failed", klassName); |
| 152 } | |
| 153 tty->print_cr("End class verification for: %s", klassName); | |
| 154 } | |
| 155 } | |
| 156 | |
| 157 if (HAS_PENDING_EXCEPTION) { | |
| 158 return false; // use the existing exception | |
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159 } else if (exception_name == NULL) { |
| 0 | 160 return true; // verifcation succeeded |
| 161 } else { // VerifyError or ClassFormatError to be created and thrown | |
| 162 ResourceMark rm(THREAD); | |
| 163 instanceKlassHandle kls = | |
| 164 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
| 165 while (!kls.is_null()) { | |
| 166 if (kls == klass) { | |
| 167 // If the class being verified is the exception we're creating | |
| 168 // or one of it's superclasses, we're in trouble and are going | |
| 169 // to infinitely recurse when we try to initialize the exception. | |
| 170 // So bail out here by throwing the preallocated VM error. | |
| 171 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
| 172 } | |
| 173 kls = kls->super(); | |
| 174 } | |
| 175 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
| 176 THROW_MSG_(exception_name, message_buffer, false); | |
| 177 } | |
| 178 } | |
| 179 | |
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180 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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181 Symbol* name = klass->name(); |
| 1142 | 182 klassOop refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
| 0 | 183 |
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184 return (should_verify_for(klass->class_loader(), should_verify_class) && |
| 0 | 185 // return if the class is a bootstrapping class |
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186 // or defineClass specified not to verify by default (flags override passed arg) |
| 0 | 187 // We need to skip the following four for bootstraping |
| 188 name != vmSymbols::java_lang_Object() && | |
| 189 name != vmSymbols::java_lang_Class() && | |
| 190 name != vmSymbols::java_lang_String() && | |
| 191 name != vmSymbols::java_lang_Throwable() && | |
| 192 | |
| 193 // Can not verify the bytecodes for shared classes because they have | |
| 194 // already been rewritten to contain constant pool cache indices, | |
| 195 // which the verifier can't understand. | |
| 196 // Shared classes shouldn't have stackmaps either. | |
| 197 !klass()->is_shared() && | |
| 198 | |
| 199 // As of the fix for 4486457 we disable verification for all of the | |
| 200 // dynamically-generated bytecodes associated with the 1.4 | |
| 201 // reflection implementation, not just those associated with | |
| 202 // sun/reflect/SerializationConstructorAccessor. | |
| 203 // NOTE: this is called too early in the bootstrapping process to be | |
| 204 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
| 205 (refl_magic_klass == NULL || | |
| 206 !klass->is_subtype_of(refl_magic_klass) || | |
| 207 VerifyReflectionBytecodes) | |
| 208 ); | |
| 209 } | |
| 210 | |
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211 Symbol* Verifier::inference_verify( |
| 0 | 212 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
| 213 JavaThread* thread = (JavaThread*)THREAD; | |
| 214 JNIEnv *env = thread->jni_environment(); | |
| 215 | |
| 216 void* verify_func = verify_byte_codes_fn(); | |
| 217 | |
| 218 if (verify_func == NULL) { | |
| 219 jio_snprintf(message, message_len, "Could not link verifier"); | |
| 220 return vmSymbols::java_lang_VerifyError(); | |
| 221 } | |
| 222 | |
| 223 ResourceMark rm(THREAD); | |
| 224 if (ClassVerifier::_verify_verbose) { | |
| 225 tty->print_cr("Verifying class %s with old format", klass->external_name()); | |
| 226 } | |
| 227 | |
| 228 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
| 229 jint result; | |
| 230 | |
| 231 { | |
| 232 HandleMark hm(thread); | |
| 233 ThreadToNativeFromVM ttn(thread); | |
| 234 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
| 235 // code knows that we have left the VM | |
| 236 | |
| 237 if (_is_new_verify_byte_codes_fn) { | |
| 238 verify_byte_codes_fn_new_t func = | |
| 239 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
| 240 result = (*func)(env, cls, message, (int)message_len, | |
| 241 klass->major_version()); | |
| 242 } else { | |
| 243 verify_byte_codes_fn_t func = | |
| 244 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
| 245 result = (*func)(env, cls, message, (int)message_len); | |
| 246 } | |
| 247 } | |
| 248 | |
| 249 JNIHandles::destroy_local(cls); | |
| 250 | |
| 251 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
| 252 // to be changed (still return jboolean (unsigned char)), and result is | |
| 253 // 1 when verification is passed. | |
| 254 if (result == 0) { | |
| 255 return vmSymbols::java_lang_VerifyError(); | |
| 256 } else if (result == 1) { | |
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257 return NULL; // verified. |
| 0 | 258 } else if (result == 2) { |
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259 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
| 0 | 260 } else if (result == 3) { |
| 261 return vmSymbols::java_lang_ClassFormatError(); | |
| 262 } else { | |
| 263 ShouldNotReachHere(); | |
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264 return NULL; |
| 0 | 265 } |
| 266 } | |
| 267 | |
| 268 // Methods in ClassVerifier | |
| 269 | |
| 270 bool ClassVerifier::_verify_verbose = false; | |
| 271 | |
| 272 ClassVerifier::ClassVerifier( | |
| 273 instanceKlassHandle klass, char* msg, size_t msg_len, TRAPS) | |
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274 : _thread(THREAD), _exception_type(NULL), _message(msg), |
| 0 | 275 _message_buffer_len(msg_len), _klass(klass) { |
| 276 _this_type = VerificationType::reference_type(klass->name()); | |
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277 // Create list to hold symbols in reference area. |
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278 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
| 0 | 279 } |
| 280 | |
| 281 ClassVerifier::~ClassVerifier() { | |
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282 // Decrement the reference count for any symbols created. |
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283 for (int i = 0; i < _symbols->length(); i++) { |
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284 Symbol* s = _symbols->at(i); |
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285 s->decrement_refcount(); |
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286 } |
| 0 | 287 } |
| 288 | |
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289 VerificationType ClassVerifier::object_type() const { |
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290 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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291 } |
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292 |
| 0 | 293 void ClassVerifier::verify_class(TRAPS) { |
| 294 if (_verify_verbose) { | |
| 295 tty->print_cr("Verifying class %s with new format", | |
| 296 _klass->external_name()); | |
| 297 } | |
| 298 | |
| 299 objArrayHandle methods(THREAD, _klass->methods()); | |
| 300 int num_methods = methods->length(); | |
| 301 | |
| 302 for (int index = 0; index < num_methods; index++) { | |
| 1570 | 303 // Check for recursive re-verification before each method. |
| 304 if (was_recursively_verified()) return; | |
| 305 | |
| 0 | 306 methodOop m = (methodOop)methods->obj_at(index); |
| 307 if (m->is_native() || m->is_abstract()) { | |
| 308 // If m is native or abstract, skip it. It is checked in class file | |
| 309 // parser that methods do not override a final method. | |
| 310 continue; | |
| 311 } | |
| 312 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
| 313 } | |
| 1570 | 314 |
| 315 if (_verify_verbose || TraceClassInitialization) { | |
| 316 if (was_recursively_verified()) | |
| 317 tty->print_cr("Recursive verification detected for: %s", | |
| 318 _klass->external_name()); | |
| 319 } | |
| 0 | 320 } |
| 321 | |
| 322 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
| 323 _method = m; // initialize _method | |
| 324 if (_verify_verbose) { | |
| 325 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); | |
| 326 } | |
| 327 | |
| 328 const char* bad_type_msg = "Bad type on operand stack in %s"; | |
| 329 | |
| 330 int32_t max_stack = m->max_stack(); | |
| 331 int32_t max_locals = m->max_locals(); | |
| 332 constantPoolHandle cp(THREAD, m->constants()); | |
| 333 | |
| 334 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
| 335 class_format_error("Invalid method signature"); | |
| 336 return; | |
| 337 } | |
| 338 | |
| 339 // Initial stack map frame: offset is 0, stack is initially empty. | |
| 340 StackMapFrame current_frame(max_locals, max_stack, this); | |
| 341 // Set initial locals | |
| 342 VerificationType return_type = current_frame.set_locals_from_arg( | |
| 343 m, current_type(), CHECK_VERIFY(this)); | |
| 344 | |
| 345 int32_t stackmap_index = 0; // index to the stackmap array | |
| 346 | |
| 347 u4 code_length = m->code_size(); | |
| 348 | |
| 349 // Scan the bytecode and map each instruction's start offset to a number. | |
| 350 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
| 351 | |
| 352 int ex_min = code_length; | |
| 353 int ex_max = -1; | |
| 354 // Look through each item on the exception table. Each of the fields must refer | |
| 355 // to a legal instruction. | |
| 356 verify_exception_handler_table( | |
| 357 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
| 358 | |
| 359 // Look through each entry on the local variable table and make sure | |
| 360 // its range of code array offsets is valid. (4169817) | |
| 361 if (m->has_localvariable_table()) { | |
| 362 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
| 363 } | |
| 364 | |
| 365 typeArrayHandle stackmap_data(THREAD, m->stackmap_data()); | |
| 366 StackMapStream stream(stackmap_data); | |
| 367 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
| 368 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
| 369 code_data, code_length, CHECK_VERIFY(this)); | |
| 370 | |
| 371 if (_verify_verbose) { | |
| 372 stackmap_table.print(); | |
| 373 } | |
| 374 | |
| 375 RawBytecodeStream bcs(m); | |
| 376 | |
| 377 // Scan the byte code linearly from the start to the end | |
| 378 bool no_control_flow = false; // Set to true when there is no direct control | |
| 379 // flow from current instruction to the next | |
| 380 // instruction in sequence | |
| 381 Bytecodes::Code opcode; | |
| 382 while (!bcs.is_last_bytecode()) { | |
| 1570 | 383 // Check for recursive re-verification before each bytecode. |
| 384 if (was_recursively_verified()) return; | |
| 385 | |
| 0 | 386 opcode = bcs.raw_next(); |
| 387 u2 bci = bcs.bci(); | |
| 388 | |
| 389 // Set current frame's offset to bci | |
| 390 current_frame.set_offset(bci); | |
| 391 | |
| 392 // Make sure every offset in stackmap table point to the beginning to | |
| 393 // an instruction. Match current_frame to stackmap_table entry with | |
| 394 // the same offset if exists. | |
| 395 stackmap_index = verify_stackmap_table( | |
| 396 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
| 397 no_control_flow, CHECK_VERIFY(this)); | |
| 398 | |
| 399 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' | |
| 400 | |
| 401 // Merge with the next instruction | |
| 402 { | |
| 403 u2 index; | |
| 404 int target; | |
| 405 VerificationType type, type2; | |
| 406 VerificationType atype; | |
| 407 | |
| 408 #ifndef PRODUCT | |
| 409 if (_verify_verbose) { | |
| 410 current_frame.print(); | |
| 411 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); | |
| 412 } | |
| 413 #endif | |
| 414 | |
| 415 // Make sure wide instruction is in correct format | |
| 416 if (bcs.is_wide()) { | |
| 417 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
| 418 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
| 419 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
| 420 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
| 421 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
| 422 opcode != Bytecodes::_dstore) { | |
| 423 verify_error(bci, "Bad wide instruction"); | |
| 424 return; | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 switch (opcode) { | |
| 429 case Bytecodes::_nop : | |
| 430 no_control_flow = false; break; | |
| 431 case Bytecodes::_aconst_null : | |
| 432 current_frame.push_stack( | |
| 433 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 434 no_control_flow = false; break; | |
| 435 case Bytecodes::_iconst_m1 : | |
| 436 case Bytecodes::_iconst_0 : | |
| 437 case Bytecodes::_iconst_1 : | |
| 438 case Bytecodes::_iconst_2 : | |
| 439 case Bytecodes::_iconst_3 : | |
| 440 case Bytecodes::_iconst_4 : | |
| 441 case Bytecodes::_iconst_5 : | |
| 442 current_frame.push_stack( | |
| 443 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 444 no_control_flow = false; break; | |
| 445 case Bytecodes::_lconst_0 : | |
| 446 case Bytecodes::_lconst_1 : | |
| 447 current_frame.push_stack_2( | |
| 448 VerificationType::long_type(), | |
| 449 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 450 no_control_flow = false; break; | |
| 451 case Bytecodes::_fconst_0 : | |
| 452 case Bytecodes::_fconst_1 : | |
| 453 case Bytecodes::_fconst_2 : | |
| 454 current_frame.push_stack( | |
| 455 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 456 no_control_flow = false; break; | |
| 457 case Bytecodes::_dconst_0 : | |
| 458 case Bytecodes::_dconst_1 : | |
| 459 current_frame.push_stack_2( | |
| 460 VerificationType::double_type(), | |
| 461 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 462 no_control_flow = false; break; | |
| 463 case Bytecodes::_sipush : | |
| 464 case Bytecodes::_bipush : | |
| 465 current_frame.push_stack( | |
| 466 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 467 no_control_flow = false; break; | |
| 468 case Bytecodes::_ldc : | |
| 469 verify_ldc( | |
| 1565 | 470 opcode, bcs.get_index_u1(), ¤t_frame, |
| 0 | 471 cp, bci, CHECK_VERIFY(this)); |
| 472 no_control_flow = false; break; | |
| 473 case Bytecodes::_ldc_w : | |
| 474 case Bytecodes::_ldc2_w : | |
| 475 verify_ldc( | |
| 1565 | 476 opcode, bcs.get_index_u2(), ¤t_frame, |
| 0 | 477 cp, bci, CHECK_VERIFY(this)); |
| 478 no_control_flow = false; break; | |
| 479 case Bytecodes::_iload : | |
| 480 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 481 no_control_flow = false; break; | |
| 482 case Bytecodes::_iload_0 : | |
| 483 case Bytecodes::_iload_1 : | |
| 484 case Bytecodes::_iload_2 : | |
| 485 case Bytecodes::_iload_3 : | |
| 486 index = opcode - Bytecodes::_iload_0; | |
| 487 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 488 no_control_flow = false; break; | |
| 489 case Bytecodes::_lload : | |
| 490 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 491 no_control_flow = false; break; | |
| 492 case Bytecodes::_lload_0 : | |
| 493 case Bytecodes::_lload_1 : | |
| 494 case Bytecodes::_lload_2 : | |
| 495 case Bytecodes::_lload_3 : | |
| 496 index = opcode - Bytecodes::_lload_0; | |
| 497 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 498 no_control_flow = false; break; | |
| 499 case Bytecodes::_fload : | |
| 500 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 501 no_control_flow = false; break; | |
| 502 case Bytecodes::_fload_0 : | |
| 503 case Bytecodes::_fload_1 : | |
| 504 case Bytecodes::_fload_2 : | |
| 505 case Bytecodes::_fload_3 : | |
| 506 index = opcode - Bytecodes::_fload_0; | |
| 507 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 508 no_control_flow = false; break; | |
| 509 case Bytecodes::_dload : | |
| 510 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 511 no_control_flow = false; break; | |
| 512 case Bytecodes::_dload_0 : | |
| 513 case Bytecodes::_dload_1 : | |
| 514 case Bytecodes::_dload_2 : | |
| 515 case Bytecodes::_dload_3 : | |
| 516 index = opcode - Bytecodes::_dload_0; | |
| 517 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 518 no_control_flow = false; break; | |
| 519 case Bytecodes::_aload : | |
| 520 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 521 no_control_flow = false; break; | |
| 522 case Bytecodes::_aload_0 : | |
| 523 case Bytecodes::_aload_1 : | |
| 524 case Bytecodes::_aload_2 : | |
| 525 case Bytecodes::_aload_3 : | |
| 526 index = opcode - Bytecodes::_aload_0; | |
| 527 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 528 no_control_flow = false; break; | |
| 529 case Bytecodes::_iaload : | |
| 530 type = current_frame.pop_stack( | |
| 531 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 532 atype = current_frame.pop_stack( | |
| 533 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 534 if (!atype.is_int_array()) { | |
| 535 verify_error(bci, bad_type_msg, "iaload"); | |
| 536 return; | |
| 537 } | |
| 538 current_frame.push_stack( | |
| 539 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 540 no_control_flow = false; break; | |
| 541 case Bytecodes::_baload : | |
| 542 type = current_frame.pop_stack( | |
| 543 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 544 atype = current_frame.pop_stack( | |
| 545 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 546 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 547 verify_error(bci, bad_type_msg, "baload"); | |
| 548 return; | |
| 549 } | |
| 550 current_frame.push_stack( | |
| 551 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 552 no_control_flow = false; break; | |
| 553 case Bytecodes::_caload : | |
| 554 type = current_frame.pop_stack( | |
| 555 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 556 atype = current_frame.pop_stack( | |
| 557 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 558 if (!atype.is_char_array()) { | |
| 559 verify_error(bci, bad_type_msg, "caload"); | |
| 560 return; | |
| 561 } | |
| 562 current_frame.push_stack( | |
| 563 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 564 no_control_flow = false; break; | |
| 565 case Bytecodes::_saload : | |
| 566 type = current_frame.pop_stack( | |
| 567 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 568 atype = current_frame.pop_stack( | |
| 569 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 570 if (!atype.is_short_array()) { | |
| 571 verify_error(bci, bad_type_msg, "saload"); | |
| 572 return; | |
| 573 } | |
| 574 current_frame.push_stack( | |
| 575 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 576 no_control_flow = false; break; | |
| 577 case Bytecodes::_laload : | |
| 578 type = current_frame.pop_stack( | |
| 579 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 580 atype = current_frame.pop_stack( | |
| 581 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 582 if (!atype.is_long_array()) { | |
| 583 verify_error(bci, bad_type_msg, "laload"); | |
| 584 return; | |
| 585 } | |
| 586 current_frame.push_stack_2( | |
| 587 VerificationType::long_type(), | |
| 588 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 589 no_control_flow = false; break; | |
| 590 case Bytecodes::_faload : | |
| 591 type = current_frame.pop_stack( | |
| 592 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 593 atype = current_frame.pop_stack( | |
| 594 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 595 if (!atype.is_float_array()) { | |
| 596 verify_error(bci, bad_type_msg, "faload"); | |
| 597 return; | |
| 598 } | |
| 599 current_frame.push_stack( | |
| 600 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 601 no_control_flow = false; break; | |
| 602 case Bytecodes::_daload : | |
| 603 type = current_frame.pop_stack( | |
| 604 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 605 atype = current_frame.pop_stack( | |
| 606 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 607 if (!atype.is_double_array()) { | |
| 608 verify_error(bci, bad_type_msg, "daload"); | |
| 609 return; | |
| 610 } | |
| 611 current_frame.push_stack_2( | |
| 612 VerificationType::double_type(), | |
| 613 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 614 no_control_flow = false; break; | |
| 615 case Bytecodes::_aaload : { | |
| 616 type = current_frame.pop_stack( | |
| 617 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 618 atype = current_frame.pop_stack( | |
| 619 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 620 if (!atype.is_reference_array()) { | |
| 621 verify_error(bci, bad_type_msg, "aaload"); | |
| 622 return; | |
| 623 } | |
| 624 if (atype.is_null()) { | |
| 625 current_frame.push_stack( | |
| 626 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 627 } else { | |
| 628 VerificationType component = | |
|
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|
629 atype.get_component(this, CHECK_VERIFY(this)); |
| 0 | 630 current_frame.push_stack(component, CHECK_VERIFY(this)); |
| 631 } | |
| 632 no_control_flow = false; break; | |
| 633 } | |
| 634 case Bytecodes::_istore : | |
| 635 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 636 no_control_flow = false; break; | |
| 637 case Bytecodes::_istore_0 : | |
| 638 case Bytecodes::_istore_1 : | |
| 639 case Bytecodes::_istore_2 : | |
| 640 case Bytecodes::_istore_3 : | |
| 641 index = opcode - Bytecodes::_istore_0; | |
| 642 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 643 no_control_flow = false; break; | |
| 644 case Bytecodes::_lstore : | |
| 645 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 646 no_control_flow = false; break; | |
| 647 case Bytecodes::_lstore_0 : | |
| 648 case Bytecodes::_lstore_1 : | |
| 649 case Bytecodes::_lstore_2 : | |
| 650 case Bytecodes::_lstore_3 : | |
| 651 index = opcode - Bytecodes::_lstore_0; | |
| 652 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 653 no_control_flow = false; break; | |
| 654 case Bytecodes::_fstore : | |
| 655 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 656 no_control_flow = false; break; | |
| 657 case Bytecodes::_fstore_0 : | |
| 658 case Bytecodes::_fstore_1 : | |
| 659 case Bytecodes::_fstore_2 : | |
| 660 case Bytecodes::_fstore_3 : | |
| 661 index = opcode - Bytecodes::_fstore_0; | |
| 662 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 663 no_control_flow = false; break; | |
| 664 case Bytecodes::_dstore : | |
| 665 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 666 no_control_flow = false; break; | |
| 667 case Bytecodes::_dstore_0 : | |
| 668 case Bytecodes::_dstore_1 : | |
| 669 case Bytecodes::_dstore_2 : | |
| 670 case Bytecodes::_dstore_3 : | |
| 671 index = opcode - Bytecodes::_dstore_0; | |
| 672 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 673 no_control_flow = false; break; | |
| 674 case Bytecodes::_astore : | |
| 675 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 676 no_control_flow = false; break; | |
| 677 case Bytecodes::_astore_0 : | |
| 678 case Bytecodes::_astore_1 : | |
| 679 case Bytecodes::_astore_2 : | |
| 680 case Bytecodes::_astore_3 : | |
| 681 index = opcode - Bytecodes::_astore_0; | |
| 682 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 683 no_control_flow = false; break; | |
| 684 case Bytecodes::_iastore : | |
| 685 type = current_frame.pop_stack( | |
| 686 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 687 type2 = current_frame.pop_stack( | |
| 688 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 689 atype = current_frame.pop_stack( | |
| 690 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 691 if (!atype.is_int_array()) { | |
| 692 verify_error(bci, bad_type_msg, "iastore"); | |
| 693 return; | |
| 694 } | |
| 695 no_control_flow = false; break; | |
| 696 case Bytecodes::_bastore : | |
| 697 type = current_frame.pop_stack( | |
| 698 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 699 type2 = current_frame.pop_stack( | |
| 700 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 701 atype = current_frame.pop_stack( | |
| 702 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 703 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 704 verify_error(bci, bad_type_msg, "bastore"); | |
| 705 return; | |
| 706 } | |
| 707 no_control_flow = false; break; | |
| 708 case Bytecodes::_castore : | |
| 709 current_frame.pop_stack( | |
| 710 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 711 current_frame.pop_stack( | |
| 712 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 713 atype = current_frame.pop_stack( | |
| 714 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 715 if (!atype.is_char_array()) { | |
| 716 verify_error(bci, bad_type_msg, "castore"); | |
| 717 return; | |
| 718 } | |
| 719 no_control_flow = false; break; | |
| 720 case Bytecodes::_sastore : | |
| 721 current_frame.pop_stack( | |
| 722 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 723 current_frame.pop_stack( | |
| 724 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 725 atype = current_frame.pop_stack( | |
| 726 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 727 if (!atype.is_short_array()) { | |
| 728 verify_error(bci, bad_type_msg, "sastore"); | |
| 729 return; | |
| 730 } | |
| 731 no_control_flow = false; break; | |
| 732 case Bytecodes::_lastore : | |
| 733 current_frame.pop_stack_2( | |
| 734 VerificationType::long2_type(), | |
| 735 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 736 current_frame.pop_stack( | |
| 737 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 738 atype = current_frame.pop_stack( | |
| 739 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 740 if (!atype.is_long_array()) { | |
| 741 verify_error(bci, bad_type_msg, "lastore"); | |
| 742 return; | |
| 743 } | |
| 744 no_control_flow = false; break; | |
| 745 case Bytecodes::_fastore : | |
| 746 current_frame.pop_stack( | |
| 747 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 748 current_frame.pop_stack | |
| 749 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 750 atype = current_frame.pop_stack( | |
| 751 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 752 if (!atype.is_float_array()) { | |
| 753 verify_error(bci, bad_type_msg, "fastore"); | |
| 754 return; | |
| 755 } | |
| 756 no_control_flow = false; break; | |
| 757 case Bytecodes::_dastore : | |
| 758 current_frame.pop_stack_2( | |
| 759 VerificationType::double2_type(), | |
| 760 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 761 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 if (!atype.is_double_array()) { | |
| 766 verify_error(bci, bad_type_msg, "dastore"); | |
| 767 return; | |
| 768 } | |
| 769 no_control_flow = false; break; | |
| 770 case Bytecodes::_aastore : | |
|
1955
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diff
changeset
|
771 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 772 type2 = current_frame.pop_stack( |
| 773 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 774 atype = current_frame.pop_stack( | |
| 775 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 776 // more type-checking is done at runtime | |
| 777 if (!atype.is_reference_array()) { | |
| 778 verify_error(bci, bad_type_msg, "aastore"); | |
| 779 return; | |
| 780 } | |
| 781 // 4938384: relaxed constraint in JVMS 3nd edition. | |
| 782 no_control_flow = false; break; | |
| 783 case Bytecodes::_pop : | |
| 784 current_frame.pop_stack( | |
| 785 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 786 no_control_flow = false; break; | |
| 787 case Bytecodes::_pop2 : | |
| 788 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 789 if (type.is_category1()) { | |
| 790 current_frame.pop_stack( | |
| 791 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 792 } else if (type.is_category2_2nd()) { | |
| 793 current_frame.pop_stack( | |
| 794 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 795 } else { | |
| 796 verify_error(bci, bad_type_msg, "pop2"); | |
| 797 return; | |
| 798 } | |
| 799 no_control_flow = false; break; | |
| 800 case Bytecodes::_dup : | |
| 801 type = current_frame.pop_stack( | |
| 802 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 803 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 804 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 805 no_control_flow = false; break; | |
| 806 case Bytecodes::_dup_x1 : | |
| 807 type = current_frame.pop_stack( | |
| 808 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 809 type2 = current_frame.pop_stack( | |
| 810 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 811 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 812 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 813 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 814 no_control_flow = false; break; | |
| 815 case Bytecodes::_dup_x2 : | |
| 816 { | |
| 817 VerificationType type3; | |
| 818 type = current_frame.pop_stack( | |
| 819 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 820 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 821 if (type2.is_category1()) { | |
| 822 type3 = current_frame.pop_stack( | |
| 823 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 824 } else if (type2.is_category2_2nd()) { | |
| 825 type3 = current_frame.pop_stack( | |
| 826 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 827 } else { | |
| 828 verify_error(bci, bad_type_msg, "dup_x2"); | |
| 829 return; | |
| 830 } | |
| 831 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 832 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 833 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 834 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 835 no_control_flow = false; break; | |
| 836 } | |
| 837 case Bytecodes::_dup2 : | |
| 838 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 839 if (type.is_category1()) { | |
| 840 type2 = current_frame.pop_stack( | |
| 841 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 842 } else if (type.is_category2_2nd()) { | |
| 843 type2 = current_frame.pop_stack( | |
| 844 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 845 } else { | |
| 846 verify_error(bci, bad_type_msg, "dup2"); | |
| 847 return; | |
| 848 } | |
| 849 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 850 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 851 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 852 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 853 no_control_flow = false; break; | |
| 854 case Bytecodes::_dup2_x1 : | |
| 855 { | |
| 856 VerificationType type3; | |
| 857 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 858 if (type.is_category1()) { | |
| 859 type2 = current_frame.pop_stack( | |
| 860 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 861 } else if(type.is_category2_2nd()) { | |
| 862 type2 = current_frame.pop_stack | |
| 863 (VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 864 } else { | |
| 865 verify_error(bci, bad_type_msg, "dup2_x1"); | |
| 866 return; | |
| 867 } | |
| 868 type3 = current_frame.pop_stack( | |
| 869 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 870 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 871 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 872 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 873 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 874 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 875 no_control_flow = false; break; | |
| 876 } | |
| 877 case Bytecodes::_dup2_x2 : | |
| 878 { | |
| 879 VerificationType type3, type4; | |
| 880 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 881 if (type.is_category1()) { | |
| 882 type2 = current_frame.pop_stack( | |
| 883 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 884 } else if (type.is_category2_2nd()) { | |
| 885 type2 = 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 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 892 if (type3.is_category1()) { | |
| 893 type4 = current_frame.pop_stack( | |
| 894 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 895 } else if (type3.is_category2_2nd()) { | |
| 896 type4 = current_frame.pop_stack( | |
| 897 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 898 } else { | |
| 899 verify_error(bci, bad_type_msg, "dup2_x2"); | |
| 900 return; | |
| 901 } | |
| 902 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 903 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 904 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
| 905 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 906 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 907 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 908 no_control_flow = false; break; | |
| 909 } | |
| 910 case Bytecodes::_swap : | |
| 911 type = current_frame.pop_stack( | |
| 912 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 913 type2 = current_frame.pop_stack( | |
| 914 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 915 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 916 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 917 no_control_flow = false; break; | |
| 918 case Bytecodes::_iadd : | |
| 919 case Bytecodes::_isub : | |
| 920 case Bytecodes::_imul : | |
| 921 case Bytecodes::_idiv : | |
| 922 case Bytecodes::_irem : | |
| 923 case Bytecodes::_ishl : | |
| 924 case Bytecodes::_ishr : | |
| 925 case Bytecodes::_iushr : | |
| 926 case Bytecodes::_ior : | |
| 927 case Bytecodes::_ixor : | |
| 928 case Bytecodes::_iand : | |
| 929 current_frame.pop_stack( | |
| 930 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 931 // fall through | |
| 932 case Bytecodes::_ineg : | |
| 933 current_frame.pop_stack( | |
| 934 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 935 current_frame.push_stack( | |
| 936 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 937 no_control_flow = false; break; | |
| 938 case Bytecodes::_ladd : | |
| 939 case Bytecodes::_lsub : | |
| 940 case Bytecodes::_lmul : | |
| 941 case Bytecodes::_ldiv : | |
| 942 case Bytecodes::_lrem : | |
| 943 case Bytecodes::_land : | |
| 944 case Bytecodes::_lor : | |
| 945 case Bytecodes::_lxor : | |
| 946 current_frame.pop_stack_2( | |
| 947 VerificationType::long2_type(), | |
| 948 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 949 // fall through | |
| 950 case Bytecodes::_lneg : | |
| 951 current_frame.pop_stack_2( | |
| 952 VerificationType::long2_type(), | |
| 953 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 954 current_frame.push_stack_2( | |
| 955 VerificationType::long_type(), | |
| 956 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 957 no_control_flow = false; break; | |
| 958 case Bytecodes::_lshl : | |
| 959 case Bytecodes::_lshr : | |
| 960 case Bytecodes::_lushr : | |
| 961 current_frame.pop_stack( | |
| 962 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 963 current_frame.pop_stack_2( | |
| 964 VerificationType::long2_type(), | |
| 965 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 966 current_frame.push_stack_2( | |
| 967 VerificationType::long_type(), | |
| 968 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 969 no_control_flow = false; break; | |
| 970 case Bytecodes::_fadd : | |
| 971 case Bytecodes::_fsub : | |
| 972 case Bytecodes::_fmul : | |
| 973 case Bytecodes::_fdiv : | |
| 974 case Bytecodes::_frem : | |
| 975 current_frame.pop_stack( | |
| 976 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 977 // fall through | |
| 978 case Bytecodes::_fneg : | |
| 979 current_frame.pop_stack( | |
| 980 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 981 current_frame.push_stack( | |
| 982 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 983 no_control_flow = false; break; | |
| 984 case Bytecodes::_dadd : | |
| 985 case Bytecodes::_dsub : | |
| 986 case Bytecodes::_dmul : | |
| 987 case Bytecodes::_ddiv : | |
| 988 case Bytecodes::_drem : | |
| 989 current_frame.pop_stack_2( | |
| 990 VerificationType::double2_type(), | |
| 991 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 992 // fall through | |
| 993 case Bytecodes::_dneg : | |
| 994 current_frame.pop_stack_2( | |
| 995 VerificationType::double2_type(), | |
| 996 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 997 current_frame.push_stack_2( | |
| 998 VerificationType::double_type(), | |
| 999 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1000 no_control_flow = false; break; | |
| 1001 case Bytecodes::_iinc : | |
| 1002 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 1003 no_control_flow = false; break; | |
| 1004 case Bytecodes::_i2l : | |
| 1005 type = current_frame.pop_stack( | |
| 1006 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1007 current_frame.push_stack_2( | |
| 1008 VerificationType::long_type(), | |
| 1009 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1010 no_control_flow = false; break; | |
| 1011 case Bytecodes::_l2i : | |
| 1012 current_frame.pop_stack_2( | |
| 1013 VerificationType::long2_type(), | |
| 1014 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1015 current_frame.push_stack( | |
| 1016 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1017 no_control_flow = false; break; | |
| 1018 case Bytecodes::_i2f : | |
| 1019 current_frame.pop_stack( | |
| 1020 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1021 current_frame.push_stack( | |
| 1022 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1023 no_control_flow = false; break; | |
| 1024 case Bytecodes::_i2d : | |
| 1025 current_frame.pop_stack( | |
| 1026 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1027 current_frame.push_stack_2( | |
| 1028 VerificationType::double_type(), | |
| 1029 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1030 no_control_flow = false; break; | |
| 1031 case Bytecodes::_l2f : | |
| 1032 current_frame.pop_stack_2( | |
| 1033 VerificationType::long2_type(), | |
| 1034 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1035 current_frame.push_stack( | |
| 1036 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1037 no_control_flow = false; break; | |
| 1038 case Bytecodes::_l2d : | |
| 1039 current_frame.pop_stack_2( | |
| 1040 VerificationType::long2_type(), | |
| 1041 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1042 current_frame.push_stack_2( | |
| 1043 VerificationType::double_type(), | |
| 1044 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1045 no_control_flow = false; break; | |
| 1046 case Bytecodes::_f2i : | |
| 1047 current_frame.pop_stack( | |
| 1048 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1049 current_frame.push_stack( | |
| 1050 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1051 no_control_flow = false; break; | |
| 1052 case Bytecodes::_f2l : | |
| 1053 current_frame.pop_stack( | |
| 1054 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1055 current_frame.push_stack_2( | |
| 1056 VerificationType::long_type(), | |
| 1057 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1058 no_control_flow = false; break; | |
| 1059 case Bytecodes::_f2d : | |
| 1060 current_frame.pop_stack( | |
| 1061 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1062 current_frame.push_stack_2( | |
| 1063 VerificationType::double_type(), | |
| 1064 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1065 no_control_flow = false; break; | |
| 1066 case Bytecodes::_d2i : | |
| 1067 current_frame.pop_stack_2( | |
| 1068 VerificationType::double2_type(), | |
| 1069 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1070 current_frame.push_stack( | |
| 1071 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1072 no_control_flow = false; break; | |
| 1073 case Bytecodes::_d2l : | |
| 1074 current_frame.pop_stack_2( | |
| 1075 VerificationType::double2_type(), | |
| 1076 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1077 current_frame.push_stack_2( | |
| 1078 VerificationType::long_type(), | |
| 1079 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1080 no_control_flow = false; break; | |
| 1081 case Bytecodes::_d2f : | |
| 1082 current_frame.pop_stack_2( | |
| 1083 VerificationType::double2_type(), | |
| 1084 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1085 current_frame.push_stack( | |
| 1086 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1087 no_control_flow = false; break; | |
| 1088 case Bytecodes::_i2b : | |
| 1089 case Bytecodes::_i2c : | |
| 1090 case Bytecodes::_i2s : | |
| 1091 current_frame.pop_stack( | |
| 1092 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1093 current_frame.push_stack( | |
| 1094 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1095 no_control_flow = false; break; | |
| 1096 case Bytecodes::_lcmp : | |
| 1097 current_frame.pop_stack_2( | |
| 1098 VerificationType::long2_type(), | |
| 1099 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1100 current_frame.pop_stack_2( | |
| 1101 VerificationType::long2_type(), | |
| 1102 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1103 current_frame.push_stack( | |
| 1104 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1105 no_control_flow = false; break; | |
| 1106 case Bytecodes::_fcmpl : | |
| 1107 case Bytecodes::_fcmpg : | |
| 1108 current_frame.pop_stack( | |
| 1109 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1110 current_frame.pop_stack( | |
| 1111 VerificationType::float_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::_dcmpl : | |
| 1116 case Bytecodes::_dcmpg : | |
| 1117 current_frame.pop_stack_2( | |
| 1118 VerificationType::double2_type(), | |
| 1119 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1120 current_frame.pop_stack_2( | |
| 1121 VerificationType::double2_type(), | |
| 1122 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1123 current_frame.push_stack( | |
| 1124 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1125 no_control_flow = false; break; | |
| 1126 case Bytecodes::_if_icmpeq: | |
| 1127 case Bytecodes::_if_icmpne: | |
| 1128 case Bytecodes::_if_icmplt: | |
| 1129 case Bytecodes::_if_icmpge: | |
| 1130 case Bytecodes::_if_icmpgt: | |
| 1131 case Bytecodes::_if_icmple: | |
| 1132 current_frame.pop_stack( | |
| 1133 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1134 // fall through | |
| 1135 case Bytecodes::_ifeq: | |
| 1136 case Bytecodes::_ifne: | |
| 1137 case Bytecodes::_iflt: | |
| 1138 case Bytecodes::_ifge: | |
| 1139 case Bytecodes::_ifgt: | |
| 1140 case Bytecodes::_ifle: | |
| 1141 current_frame.pop_stack( | |
| 1142 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1143 target = bcs.dest(); | |
| 1144 stackmap_table.check_jump_target( | |
| 1145 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1146 no_control_flow = false; break; | |
| 1147 case Bytecodes::_if_acmpeq : | |
| 1148 case Bytecodes::_if_acmpne : | |
| 1149 current_frame.pop_stack( | |
| 1150 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1151 // fall through | |
| 1152 case Bytecodes::_ifnull : | |
| 1153 case Bytecodes::_ifnonnull : | |
| 1154 current_frame.pop_stack( | |
| 1155 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1156 target = bcs.dest(); | |
| 1157 stackmap_table.check_jump_target | |
| 1158 (¤t_frame, target, CHECK_VERIFY(this)); | |
| 1159 no_control_flow = false; break; | |
| 1160 case Bytecodes::_goto : | |
| 1161 target = bcs.dest(); | |
| 1162 stackmap_table.check_jump_target( | |
| 1163 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1164 no_control_flow = true; break; | |
| 1165 case Bytecodes::_goto_w : | |
| 1166 target = bcs.dest_w(); | |
| 1167 stackmap_table.check_jump_target( | |
| 1168 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1169 no_control_flow = true; break; | |
| 1170 case Bytecodes::_tableswitch : | |
| 1171 case Bytecodes::_lookupswitch : | |
| 1172 verify_switch( | |
| 1173 &bcs, code_length, code_data, ¤t_frame, | |
| 1174 &stackmap_table, CHECK_VERIFY(this)); | |
| 1175 no_control_flow = true; break; | |
| 1176 case Bytecodes::_ireturn : | |
| 1177 type = current_frame.pop_stack( | |
| 1178 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1179 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1180 no_control_flow = true; break; | |
| 1181 case Bytecodes::_lreturn : | |
| 1182 type2 = current_frame.pop_stack( | |
| 1183 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1184 type = current_frame.pop_stack( | |
| 1185 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1186 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1187 no_control_flow = true; break; | |
| 1188 case Bytecodes::_freturn : | |
| 1189 type = current_frame.pop_stack( | |
| 1190 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1191 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1192 no_control_flow = true; break; | |
| 1193 case Bytecodes::_dreturn : | |
| 1194 type2 = current_frame.pop_stack( | |
| 1195 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1196 type = current_frame.pop_stack( | |
| 1197 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1198 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1199 no_control_flow = true; break; | |
| 1200 case Bytecodes::_areturn : | |
| 1201 type = current_frame.pop_stack( | |
| 1202 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1203 verify_return_value(return_type, type, bci, CHECK_VERIFY(this)); | |
| 1204 no_control_flow = true; break; | |
| 1205 case Bytecodes::_return : | |
| 1206 if (return_type != VerificationType::bogus_type()) { | |
| 1207 verify_error(bci, "Method expects no return value"); | |
| 1208 return; | |
| 1209 } | |
| 1210 // Make sure "this" has been initialized if current method is an | |
| 1211 // <init> | |
| 1212 if (_method->name() == vmSymbols::object_initializer_name() && | |
| 1213 current_frame.flag_this_uninit()) { | |
| 1214 verify_error(bci, | |
| 1215 "Constructor must call super() or this() before return"); | |
| 1216 return; | |
| 1217 } | |
| 1218 no_control_flow = true; break; | |
| 1219 case Bytecodes::_getstatic : | |
| 1220 case Bytecodes::_putstatic : | |
| 1221 case Bytecodes::_getfield : | |
| 1222 case Bytecodes::_putfield : | |
| 1223 verify_field_instructions( | |
| 1224 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
| 1225 no_control_flow = false; break; | |
| 1226 case Bytecodes::_invokevirtual : | |
| 1227 case Bytecodes::_invokespecial : | |
| 1228 case Bytecodes::_invokestatic : | |
| 1229 verify_invoke_instructions( | |
| 1230 &bcs, code_length, ¤t_frame, | |
| 1231 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1232 no_control_flow = false; break; | |
| 1233 case Bytecodes::_invokeinterface : | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
1234 case Bytecodes::_invokedynamic : |
| 0 | 1235 verify_invoke_instructions( |
| 1236 &bcs, code_length, ¤t_frame, | |
| 1237 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1238 no_control_flow = false; break; | |
| 1239 case Bytecodes::_new : | |
| 1240 { | |
| 1565 | 1241 index = bcs.get_index_u2(); |
| 0 | 1242 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); |
| 1243 VerificationType new_class_type = | |
| 1244 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1245 if (!new_class_type.is_object()) { | |
| 1246 verify_error(bci, "Illegal new instruction"); | |
| 1247 return; | |
| 1248 } | |
| 1249 type = VerificationType::uninitialized_type(bci); | |
| 1250 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1251 no_control_flow = false; break; | |
| 1252 } | |
| 1253 case Bytecodes::_newarray : | |
| 1254 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
| 1255 current_frame.pop_stack( | |
| 1256 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1257 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1258 no_control_flow = false; break; | |
| 1259 case Bytecodes::_anewarray : | |
| 1260 verify_anewarray( | |
| 1565 | 1261 bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
| 0 | 1262 no_control_flow = false; break; |
| 1263 case Bytecodes::_arraylength : | |
| 1264 type = current_frame.pop_stack( | |
| 1265 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
|
134
8a79f7ec8f5d
6692246: Regression : JDK 6u4 b01 fails two JCK tests when fallback is switched off
kamg
parents:
0
diff
changeset
|
1266 if (!(type.is_null() || type.is_array())) { |
| 0 | 1267 verify_error(bci, bad_type_msg, "arraylength"); |
| 1268 } | |
| 1269 current_frame.push_stack( | |
| 1270 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1271 no_control_flow = false; break; | |
| 1272 case Bytecodes::_checkcast : | |
| 1273 { | |
| 1565 | 1274 index = bcs.get_index_u2(); |
| 0 | 1275 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); |
|
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6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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1276 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1277 VerificationType klass_type = cp_index_to_type( |
| 1278 index, cp, CHECK_VERIFY(this)); | |
| 1279 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
| 1280 no_control_flow = false; break; | |
| 1281 } | |
| 1282 case Bytecodes::_instanceof : { | |
| 1565 | 1283 index = bcs.get_index_u2(); |
| 0 | 1284 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); |
|
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1285 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1286 current_frame.push_stack( |
| 1287 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1288 no_control_flow = false; break; | |
| 1289 } | |
| 1290 case Bytecodes::_monitorenter : | |
| 1291 case Bytecodes::_monitorexit : | |
| 1292 current_frame.pop_stack( | |
| 1293 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1294 no_control_flow = false; break; | |
| 1295 case Bytecodes::_multianewarray : | |
| 1296 { | |
| 1565 | 1297 index = bcs.get_index_u2(); |
| 0 | 1298 u2 dim = *(bcs.bcp()+3); |
| 1299 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); | |
| 1300 VerificationType new_array_type = | |
| 1301 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1302 if (!new_array_type.is_array()) { | |
| 1303 verify_error(bci, | |
| 1304 "Illegal constant pool index in multianewarray instruction"); | |
| 1305 return; | |
| 1306 } | |
| 1307 if (dim < 1 || new_array_type.dimensions() < dim) { | |
| 1308 verify_error(bci, | |
| 1309 "Illegal dimension in multianewarray instruction"); | |
| 1310 return; | |
| 1311 } | |
| 1312 for (int i = 0; i < dim; i++) { | |
| 1313 current_frame.pop_stack( | |
| 1314 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1315 } | |
| 1316 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 1317 no_control_flow = false; break; | |
| 1318 } | |
| 1319 case Bytecodes::_athrow : | |
| 1320 type = VerificationType::reference_type( | |
| 1321 vmSymbols::java_lang_Throwable()); | |
| 1322 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
| 1323 no_control_flow = true; break; | |
| 1324 default: | |
| 1325 // We only need to check the valid bytecodes in class file. | |
| 1326 // And jsr and ret are not in the new class file format in JDK1.5. | |
| 1327 verify_error(bci, "Bad instruction"); | |
| 1328 no_control_flow = false; | |
| 1329 return; | |
| 1330 } // end switch | |
| 1331 } // end Merge with the next instruction | |
| 1332 | |
| 1333 // Look for possible jump target in exception handlers and see if it | |
| 1334 // matches current_frame | |
| 1335 if (bci >= ex_min && bci < ex_max) { | |
| 1336 verify_exception_handler_targets( | |
| 1337 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
| 1338 } | |
| 1339 } // end while | |
| 1340 | |
| 1341 // Make sure that control flow does not fall through end of the method | |
| 1342 if (!no_control_flow) { | |
| 1343 verify_error(code_length, "Control flow falls through code end"); | |
| 1344 return; | |
| 1345 } | |
| 1346 } | |
| 1347 | |
| 1348 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { | |
| 1349 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
| 1350 memset(code_data, 0, sizeof(char) * code_length); | |
| 1351 RawBytecodeStream bcs(m); | |
| 1352 | |
| 1353 while (!bcs.is_last_bytecode()) { | |
| 1354 if (bcs.raw_next() != Bytecodes::_illegal) { | |
| 1355 int bci = bcs.bci(); | |
| 1565 | 1356 if (bcs.raw_code() == Bytecodes::_new) { |
| 0 | 1357 code_data[bci] = NEW_OFFSET; |
| 1358 } else { | |
| 1359 code_data[bci] = BYTECODE_OFFSET; | |
| 1360 } | |
| 1361 } else { | |
| 1362 verify_error(bcs.bci(), "Bad instruction"); | |
| 1363 return NULL; | |
| 1364 } | |
| 1365 } | |
| 1366 | |
| 1367 return code_data; | |
| 1368 } | |
| 1369 | |
| 1370 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
| 1371 typeArrayHandle exhandlers (THREAD, _method->exception_table()); | |
| 1372 constantPoolHandle cp (THREAD, _method->constants()); | |
| 1373 | |
| 1374 if (exhandlers() != NULL) { | |
| 1375 for(int i = 0; i < exhandlers->length();) { | |
| 1376 u2 start_pc = exhandlers->int_at(i++); | |
| 1377 u2 end_pc = exhandlers->int_at(i++); | |
| 1378 u2 handler_pc = exhandlers->int_at(i++); | |
| 1379 if (start_pc >= code_length || code_data[start_pc] == 0) { | |
| 1380 class_format_error("Illegal exception table start_pc %d", start_pc); | |
| 1381 return; | |
| 1382 } | |
| 1383 if (end_pc != code_length) { // special case: end_pc == code_length | |
| 1384 if (end_pc > code_length || code_data[end_pc] == 0) { | |
| 1385 class_format_error("Illegal exception table end_pc %d", end_pc); | |
| 1386 return; | |
| 1387 } | |
| 1388 } | |
| 1389 if (handler_pc >= code_length || code_data[handler_pc] == 0) { | |
| 1390 class_format_error("Illegal exception table handler_pc %d", handler_pc); | |
| 1391 return; | |
| 1392 } | |
| 1393 int catch_type_index = exhandlers->int_at(i++); | |
| 1394 if (catch_type_index != 0) { | |
| 1395 VerificationType catch_type = cp_index_to_type( | |
| 1396 catch_type_index, cp, CHECK_VERIFY(this)); | |
| 1397 VerificationType throwable = | |
| 1398 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); | |
| 1399 bool is_subclass = throwable.is_assignable_from( | |
|
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1400 catch_type, this, CHECK_VERIFY(this)); |
| 0 | 1401 if (!is_subclass) { |
| 1402 // 4286534: should throw VerifyError according to recent spec change | |
| 1403 verify_error( | |
| 1404 "Catch type is not a subclass of Throwable in handler %d", | |
| 1405 handler_pc); | |
| 1406 return; | |
| 1407 } | |
| 1408 } | |
| 1409 if (start_pc < min) min = start_pc; | |
| 1410 if (end_pc > max) max = end_pc; | |
| 1411 } | |
| 1412 } | |
| 1413 } | |
| 1414 | |
| 1415 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
| 1416 int localvariable_table_length = _method()->localvariable_table_length(); | |
| 1417 if (localvariable_table_length > 0) { | |
| 1418 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
| 1419 for (int i = 0; i < localvariable_table_length; i++) { | |
| 1420 u2 start_bci = table[i].start_bci; | |
| 1421 u2 length = table[i].length; | |
| 1422 | |
| 1423 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
| 1424 class_format_error( | |
| 1425 "Illegal local variable table start_pc %d", start_bci); | |
| 1426 return; | |
| 1427 } | |
| 1428 u4 end_bci = (u4)(start_bci + length); | |
| 1429 if (end_bci != code_length) { | |
| 1430 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
| 1431 class_format_error( "Illegal local variable table length %d", length); | |
| 1432 return; | |
| 1433 } | |
| 1434 } | |
| 1435 } | |
| 1436 } | |
| 1437 } | |
| 1438 | |
| 1439 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
| 1440 StackMapFrame* current_frame, | |
| 1441 StackMapTable* stackmap_table, | |
| 1442 bool no_control_flow, TRAPS) { | |
| 1443 if (stackmap_index < stackmap_table->get_frame_count()) { | |
| 1444 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
| 1445 if (no_control_flow && this_offset > bci) { | |
| 1446 verify_error(bci, "Expecting a stack map frame"); | |
| 1447 return 0; | |
| 1448 } | |
| 1449 if (this_offset == bci) { | |
| 1450 // See if current stack map can be assigned to the frame in table. | |
| 1451 // current_frame is the stackmap frame got from the last instruction. | |
| 1452 // If matched, current_frame will be updated by this method. | |
| 1453 bool match = stackmap_table->match_stackmap( | |
| 1454 current_frame, this_offset, stackmap_index, | |
| 1455 !no_control_flow, true, CHECK_VERIFY_(this, 0)); | |
| 1456 if (!match) { | |
| 1457 // report type error | |
| 1458 verify_error(bci, "Instruction type does not match stack map"); | |
| 1459 return 0; | |
| 1460 } | |
| 1461 stackmap_index++; | |
| 1462 } else if (this_offset < bci) { | |
| 1463 // current_offset should have met this_offset. | |
| 1464 class_format_error("Bad stack map offset %d", this_offset); | |
| 1465 return 0; | |
| 1466 } | |
| 1467 } else if (no_control_flow) { | |
| 1468 verify_error(bci, "Expecting a stack map frame"); | |
| 1469 return 0; | |
| 1470 } | |
| 1471 return stackmap_index; | |
| 1472 } | |
| 1473 | |
| 1474 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 1475 StackMapTable* stackmap_table, TRAPS) { | |
| 1476 constantPoolHandle cp (THREAD, _method->constants()); | |
| 1477 typeArrayHandle exhandlers (THREAD, _method->exception_table()); | |
| 1478 if (exhandlers() != NULL) { | |
| 1479 for(int i = 0; i < exhandlers->length();) { | |
| 1480 u2 start_pc = exhandlers->int_at(i++); | |
| 1481 u2 end_pc = exhandlers->int_at(i++); | |
| 1482 u2 handler_pc = exhandlers->int_at(i++); | |
| 1483 int catch_type_index = exhandlers->int_at(i++); | |
| 1484 if(bci >= start_pc && bci < end_pc) { | |
| 1485 u1 flags = current_frame->flags(); | |
| 1486 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } | |
| 1487 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); | |
| 1488 if (catch_type_index != 0) { | |
| 1489 // We know that this index refers to a subclass of Throwable | |
| 1490 VerificationType catch_type = cp_index_to_type( | |
| 1491 catch_type_index, cp, CHECK_VERIFY(this)); | |
| 1492 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); | |
| 1493 } else { | |
| 1494 VerificationType throwable = | |
| 1495 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); | |
| 1496 new_frame->push_stack(throwable, CHECK_VERIFY(this)); | |
| 1497 } | |
| 1498 bool match = stackmap_table->match_stackmap( | |
| 1499 new_frame, handler_pc, true, false, CHECK_VERIFY(this)); | |
| 1500 if (!match) { | |
| 1501 verify_error(bci, | |
| 1502 "Stack map does not match the one at exception handler %d", | |
| 1503 handler_pc); | |
| 1504 return; | |
| 1505 } | |
| 1506 } | |
| 1507 } | |
| 1508 } | |
| 1509 } | |
| 1510 | |
| 1511 void ClassVerifier::verify_cp_index(constantPoolHandle cp, int index, TRAPS) { | |
| 1512 int nconstants = cp->length(); | |
| 1513 if ((index <= 0) || (index >= nconstants)) { | |
| 1514 verify_error("Illegal constant pool index %d in class %s", | |
| 1515 index, instanceKlass::cast(cp->pool_holder())->external_name()); | |
| 1516 return; | |
| 1517 } | |
| 1518 } | |
| 1519 | |
| 1520 void ClassVerifier::verify_cp_type( | |
| 1521 int index, constantPoolHandle cp, unsigned int types, TRAPS) { | |
| 1522 | |
| 1523 // In some situations, bytecode rewriting may occur while we're verifying. | |
| 1524 // In this case, a constant pool cache exists and some indices refer to that | |
| 1570 | 1525 // instead. Be sure we don't pick up such indices by accident. |
| 1526 // We must check was_recursively_verified() before we get here. | |
| 1527 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
| 0 | 1528 |
| 1529 verify_cp_index(cp, index, CHECK_VERIFY(this)); | |
| 1530 unsigned int tag = cp->tag_at(index).value(); | |
| 1531 if ((types & (1 << tag)) == 0) { | |
| 1532 verify_error( | |
| 1533 "Illegal type at constant pool entry %d in class %s", | |
| 1534 index, instanceKlass::cast(cp->pool_holder())->external_name()); | |
| 1535 return; | |
| 1536 } | |
| 1537 } | |
| 1538 | |
| 1539 void ClassVerifier::verify_cp_class_type( | |
| 1540 int index, constantPoolHandle cp, TRAPS) { | |
| 1541 verify_cp_index(cp, index, CHECK_VERIFY(this)); | |
| 1542 constantTag tag = cp->tag_at(index); | |
| 1543 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1544 verify_error("Illegal type at constant pool entry %d in class %s", | |
| 1545 index, instanceKlass::cast(cp->pool_holder())->external_name()); | |
| 1546 return; | |
| 1547 } | |
| 1548 } | |
| 1549 | |
| 1550 void ClassVerifier::format_error_message( | |
| 1551 const char* fmt, int offset, va_list va) { | |
| 1552 ResourceMark rm(_thread); | |
| 1553 stringStream message(_message, _message_buffer_len); | |
| 1554 message.vprint(fmt, va); | |
| 1555 if (!_method.is_null()) { | |
| 1556 message.print(" in method %s", _method->name_and_sig_as_C_string()); | |
| 1557 } | |
| 1558 if (offset != -1) { | |
| 1559 message.print(" at offset %d", offset); | |
| 1560 } | |
| 1561 } | |
| 1562 | |
| 1563 void ClassVerifier::verify_error(u2 offset, const char* fmt, ...) { | |
| 1564 _exception_type = vmSymbols::java_lang_VerifyError(); | |
| 1565 va_list va; | |
| 1566 va_start(va, fmt); | |
| 1567 format_error_message(fmt, offset, va); | |
| 1568 va_end(va); | |
| 1569 } | |
| 1570 | |
| 1571 void ClassVerifier::verify_error(const char* fmt, ...) { | |
| 1572 _exception_type = vmSymbols::java_lang_VerifyError(); | |
| 1573 va_list va; | |
| 1574 va_start(va, fmt); | |
| 1575 format_error_message(fmt, -1, va); | |
| 1576 va_end(va); | |
| 1577 } | |
| 1578 | |
| 1579 void ClassVerifier::class_format_error(const char* msg, ...) { | |
| 1580 _exception_type = vmSymbols::java_lang_ClassFormatError(); | |
| 1581 va_list va; | |
| 1582 va_start(va, msg); | |
| 1583 format_error_message(msg, -1, va); | |
| 1584 va_end(va); | |
| 1585 } | |
| 1586 | |
|
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|
1587 klassOop ClassVerifier::load_class(Symbol* name, TRAPS) { |
| 0 | 1588 // Get current loader and protection domain first. |
| 1589 oop loader = current_class()->class_loader(); | |
| 1590 oop protection_domain = current_class()->protection_domain(); | |
| 1591 | |
| 1592 return SystemDictionary::resolve_or_fail( | |
| 1593 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
| 1594 true, CHECK_NULL); | |
| 1595 } | |
| 1596 | |
| 1597 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
| 1598 klassOop target_class, | |
|
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1599 Symbol* field_name, |
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1600 Symbol* field_sig, |
| 0 | 1601 bool is_method) { |
| 1602 No_Safepoint_Verifier nosafepoint; | |
| 1603 | |
| 1604 // If target class isn't a super class of this class, we don't worry about this case | |
| 1605 if (!this_class->is_subclass_of(target_class)) { | |
| 1606 return false; | |
| 1607 } | |
| 1608 // Check if the specified method or field is protected | |
| 1609 instanceKlass* target_instance = instanceKlass::cast(target_class); | |
| 1610 fieldDescriptor fd; | |
| 1611 if (is_method) { | |
| 1612 methodOop m = target_instance->uncached_lookup_method(field_name, field_sig); | |
| 1613 if (m != NULL && m->is_protected()) { | |
| 1614 if (!this_class->is_same_class_package(m->method_holder())) { | |
| 1615 return true; | |
| 1616 } | |
| 1617 } | |
| 1618 } else { | |
| 1619 klassOop member_klass = target_instance->find_field(field_name, field_sig, &fd); | |
| 1620 if(member_klass != NULL && fd.is_protected()) { | |
| 1621 if (!this_class->is_same_class_package(member_klass)) { | |
| 1622 return true; | |
| 1623 } | |
| 1624 } | |
| 1625 } | |
| 1626 return false; | |
| 1627 } | |
| 1628 | |
| 1629 void ClassVerifier::verify_ldc( | |
| 1630 int opcode, u2 index, StackMapFrame *current_frame, | |
| 1631 constantPoolHandle cp, u2 bci, TRAPS) { | |
| 1632 verify_cp_index(cp, index, CHECK_VERIFY(this)); | |
| 1633 constantTag tag = cp->tag_at(index); | |
| 1634 unsigned int types; | |
| 1635 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
| 1636 if (!tag.is_unresolved_string() && !tag.is_unresolved_klass()) { | |
| 1637 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) | |
| 1602 | 1638 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
| 1639 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
| 1640 // Note: The class file parser already verified the legality of | |
| 1641 // MethodHandle and MethodType constants. | |
| 0 | 1642 verify_cp_type(index, cp, types, CHECK_VERIFY(this)); |
| 1643 } | |
| 1644 } else { | |
| 1645 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
| 1646 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
| 1647 verify_cp_type(index, cp, types, CHECK_VERIFY(this)); | |
| 1648 } | |
|
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1649 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
|
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1650 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
|
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1651 } else if (tag.is_string() || tag.is_unresolved_string()) { |
| 0 | 1652 current_frame->push_stack( |
| 1653 VerificationType::reference_type( | |
| 1654 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
| 1655 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1656 current_frame->push_stack( | |
| 1657 VerificationType::reference_type( | |
| 1658 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
| 1659 } else if (tag.is_int()) { | |
| 1660 current_frame->push_stack( | |
| 1661 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1662 } else if (tag.is_float()) { | |
| 1663 current_frame->push_stack( | |
| 1664 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1665 } else if (tag.is_double()) { | |
| 1666 current_frame->push_stack_2( | |
| 1667 VerificationType::double_type(), | |
| 1668 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1669 } else if (tag.is_long()) { | |
| 1670 current_frame->push_stack_2( | |
| 1671 VerificationType::long_type(), | |
| 1672 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1602 | 1673 } else if (tag.is_method_handle()) { |
| 1674 current_frame->push_stack( | |
| 1675 VerificationType::reference_type( | |
| 2460 | 1676 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
| 1602 | 1677 } else if (tag.is_method_type()) { |
| 1678 current_frame->push_stack( | |
| 1679 VerificationType::reference_type( | |
| 2460 | 1680 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
| 0 | 1681 } else { |
| 1682 verify_error(bci, "Invalid index in ldc"); | |
| 1683 return; | |
| 1684 } | |
| 1685 } | |
| 1686 | |
| 1687 void ClassVerifier::verify_switch( | |
| 1688 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 1689 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
| 1690 int bci = bcs->bci(); | |
| 1691 address bcp = bcs->bcp(); | |
| 1692 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
| 1693 | |
| 1694 // 4639449 & 4647081: padding bytes must be 0 | |
| 1695 u2 padding_offset = 1; | |
| 1696 while ((bcp + padding_offset) < aligned_bcp) { | |
| 1697 if(*(bcp + padding_offset) != 0) { | |
| 1698 verify_error(bci, "Nonzero padding byte in lookswitch or tableswitch"); | |
| 1699 return; | |
| 1700 } | |
| 1701 padding_offset++; | |
| 1702 } | |
| 1703 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); | |
| 1704 int keys, delta; | |
| 1705 current_frame->pop_stack( | |
| 1706 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1565 | 1707 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
| 0 | 1708 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
| 1709 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
| 1710 if (low > high) { | |
| 1711 verify_error(bci, | |
| 1712 "low must be less than or equal to high in tableswitch"); | |
| 1713 return; | |
| 1714 } | |
| 1715 keys = high - low + 1; | |
| 1716 if (keys < 0) { | |
| 1717 verify_error(bci, "too many keys in tableswitch"); | |
| 1718 return; | |
| 1719 } | |
| 1720 delta = 1; | |
| 1721 } else { | |
| 1722 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
| 1723 if (keys < 0) { | |
| 1724 verify_error(bci, "number of keys in lookupswitch less than 0"); | |
| 1725 return; | |
| 1726 } | |
| 1727 delta = 2; | |
| 1728 // Make sure that the lookupswitch items are sorted | |
| 1729 for (int i = 0; i < (keys - 1); i++) { | |
| 1730 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
| 1731 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
| 1732 if (this_key >= next_key) { | |
| 1733 verify_error(bci, "Bad lookupswitch instruction"); | |
| 1734 return; | |
| 1735 } | |
| 1736 } | |
| 1737 } | |
| 1738 int target = bci + default_offset; | |
| 1739 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
| 1740 for (int i = 0; i < keys; i++) { | |
| 6118 | 1741 // Because check_jump_target() may safepoint, the bytecode could have |
| 1742 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
| 1743 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
| 0 | 1744 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
| 1745 stackmap_table->check_jump_target( | |
| 1746 current_frame, target, CHECK_VERIFY(this)); | |
| 1747 } | |
| 6118 | 1748 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
| 0 | 1749 } |
| 1750 | |
| 1751 bool ClassVerifier::name_in_supers( | |
|
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1752 Symbol* ref_name, instanceKlassHandle current) { |
| 0 | 1753 klassOop super = current->super(); |
| 1754 while (super != NULL) { | |
| 1755 if (super->klass_part()->name() == ref_name) { | |
| 1756 return true; | |
| 1757 } | |
| 1758 super = super->klass_part()->super(); | |
| 1759 } | |
| 1760 return false; | |
| 1761 } | |
| 1762 | |
| 1763 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
| 1764 StackMapFrame* current_frame, | |
| 1765 constantPoolHandle cp, | |
| 1766 TRAPS) { | |
| 1565 | 1767 u2 index = bcs->get_index_u2(); |
| 0 | 1768 verify_cp_type(index, cp, 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); |
| 1769 | |
| 1770 // Get field name and signature | |
|
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1771 Symbol* field_name = cp->name_ref_at(index); |
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1772 Symbol* field_sig = cp->signature_ref_at(index); |
| 0 | 1773 |
| 1774 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
| 1775 class_format_error( | |
| 1776 "Invalid signature for field in class %s referenced " | |
| 1777 "from constant pool index %d", _klass->external_name(), index); | |
| 1778 return; | |
| 1779 } | |
| 1780 | |
| 1781 // Get referenced class type | |
| 1782 VerificationType ref_class_type = cp_ref_index_to_type( | |
| 1783 index, cp, CHECK_VERIFY(this)); | |
| 1784 if (!ref_class_type.is_object()) { | |
| 1785 verify_error( | |
| 1786 "Expecting reference to class in class %s at constant pool index %d", | |
| 1787 _klass->external_name(), index); | |
| 1788 return; | |
| 1789 } | |
| 1790 VerificationType target_class_type = ref_class_type; | |
| 1791 | |
| 1792 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 1793 "buffer type must match VerificationType size"); | |
| 1794 uintptr_t field_type_buffer[2]; | |
| 1795 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
| 1796 // If we make a VerificationType[2] array directly, the compiler calls | |
| 1797 // to the c-runtime library to do the allocation instead of just | |
| 1798 // stack allocating it. Plus it would run constructors. This shows up | |
| 1799 // in performance profiles. | |
| 1800 | |
| 1801 SignatureStream sig_stream(field_sig, false); | |
| 1802 VerificationType stack_object_type; | |
| 1803 int n = change_sig_to_verificationType( | |
| 1804 &sig_stream, field_type, CHECK_VERIFY(this)); | |
| 1805 u2 bci = bcs->bci(); | |
| 1806 bool is_assignable; | |
| 1565 | 1807 switch (bcs->raw_code()) { |
| 0 | 1808 case Bytecodes::_getstatic: { |
| 1809 for (int i = 0; i < n; i++) { | |
| 1810 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1811 } | |
| 1812 break; | |
| 1813 } | |
| 1814 case Bytecodes::_putstatic: { | |
| 1815 for (int i = n - 1; i >= 0; i--) { | |
| 1816 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1817 } | |
| 1818 break; | |
| 1819 } | |
| 1820 case Bytecodes::_getfield: { | |
| 1821 stack_object_type = current_frame->pop_stack( | |
| 1822 target_class_type, CHECK_VERIFY(this)); | |
| 1823 for (int i = 0; i < n; i++) { | |
| 1824 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1825 } | |
| 1826 goto check_protected; | |
| 1827 } | |
| 1828 case Bytecodes::_putfield: { | |
| 1829 for (int i = n - 1; i >= 0; i--) { | |
| 1830 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 1831 } | |
| 1832 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
| 1833 | |
| 1834 // The JVMS 2nd edition allows field initialization before the superclass | |
| 1835 // initializer, if the field is defined within the current class. | |
| 1836 fieldDescriptor fd; | |
| 1837 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
| 1838 target_class_type.equals(current_type()) && | |
|
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1839 _klass->find_local_field(field_name, field_sig, &fd)) { |
| 0 | 1840 stack_object_type = current_type(); |
| 1841 } | |
| 1842 is_assignable = target_class_type.is_assignable_from( | |
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1843 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 1844 if (!is_assignable) { |
| 1845 verify_error(bci, "Bad type on operand stack in putfield"); | |
| 1846 return; | |
| 1847 } | |
| 1848 } | |
| 1849 check_protected: { | |
| 1850 if (_this_type == stack_object_type) | |
| 1851 break; // stack_object_type must be assignable to _current_class_type | |
|
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1852 Symbol* ref_class_name = |
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1853 cp->klass_name_at(cp->klass_ref_index_at(index)); |
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1854 if (!name_in_supers(ref_class_name, current_class())) |
| 0 | 1855 // stack_object_type must be assignable to _current_class_type since: |
| 1856 // 1. stack_object_type must be assignable to ref_class. | |
| 1857 // 2. ref_class must be _current_class or a subclass of it. It can't | |
| 1858 // be a superclass of it. See revised JVMS 5.4.4. | |
| 1859 break; | |
| 1860 | |
| 1861 klassOop ref_class_oop = load_class(ref_class_name, CHECK); | |
|
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1862 if (is_protected_access(current_class(), ref_class_oop, field_name, |
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1863 field_sig, false)) { |
| 0 | 1864 // It's protected access, check if stack object is assignable to |
| 1865 // current class. | |
| 1866 is_assignable = current_type().is_assignable_from( | |
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1867 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 1868 if (!is_assignable) { |
| 1869 verify_error(bci, "Bad access to protected data in getfield"); | |
| 1870 return; | |
| 1871 } | |
| 1872 } | |
| 1873 break; | |
| 1874 } | |
| 1875 default: ShouldNotReachHere(); | |
| 1876 } | |
| 1877 } | |
| 1878 | |
| 1879 void ClassVerifier::verify_invoke_init( | |
| 1880 RawBytecodeStream* bcs, VerificationType ref_class_type, | |
| 1881 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, | |
| 1882 constantPoolHandle cp, TRAPS) { | |
| 1883 u2 bci = bcs->bci(); | |
| 1884 VerificationType type = current_frame->pop_stack( | |
| 1885 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1886 if (type == VerificationType::uninitialized_this_type()) { | |
| 1887 // The method must be an <init> method of either this class, or one of its | |
| 1888 // superclasses | |
| 1677 | 1889 if (ref_class_type.name() != current_class()->name() && |
| 1890 !name_in_supers(ref_class_type.name(), current_class())) { | |
| 0 | 1891 verify_error(bci, "Bad <init> method call"); |
| 1892 return; | |
| 1893 } | |
| 1894 current_frame->initialize_object(type, current_type()); | |
| 1895 *this_uninit = true; | |
| 1896 } else if (type.is_uninitialized()) { | |
| 1897 u2 new_offset = type.bci(); | |
| 1898 address new_bcp = bcs->bcp() - bci + new_offset; | |
| 1899 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
| 1900 verify_error(new_offset, "Expecting new instruction"); | |
| 1901 return; | |
| 1902 } | |
| 1903 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
| 1904 verify_cp_class_type(new_class_index, cp, CHECK_VERIFY(this)); | |
| 1905 | |
| 1906 // The method must be an <init> method of the indicated class | |
| 1907 VerificationType new_class_type = cp_index_to_type( | |
| 1908 new_class_index, cp, CHECK_VERIFY(this)); | |
| 1909 if (!new_class_type.equals(ref_class_type)) { | |
| 1910 verify_error(bci, "Call to wrong <init> method"); | |
| 1911 return; | |
| 1912 } | |
| 1913 // According to the VM spec, if the referent class is a superclass of the | |
| 1914 // current class, and is in a different runtime package, and the method is | |
| 1915 // protected, then the objectref must be the current class or a subclass | |
| 1916 // of the current class. | |
| 1917 VerificationType objectref_type = new_class_type; | |
| 1918 if (name_in_supers(ref_class_type.name(), current_class())) { | |
| 1919 klassOop ref_klass = load_class( | |
| 1920 ref_class_type.name(), CHECK_VERIFY(this)); | |
| 1921 methodOop m = instanceKlass::cast(ref_klass)->uncached_lookup_method( | |
| 1922 vmSymbols::object_initializer_name(), | |
| 1565 | 1923 cp->signature_ref_at(bcs->get_index_u2())); |
| 0 | 1924 instanceKlassHandle mh(THREAD, m->method_holder()); |
| 1925 if (m->is_protected() && !mh->is_same_class_package(_klass())) { | |
| 1926 bool assignable = current_type().is_assignable_from( | |
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1927 objectref_type, this, CHECK_VERIFY(this)); |
| 0 | 1928 if (!assignable) { |
| 1929 verify_error(bci, "Bad access to protected <init> method"); | |
| 1930 return; | |
| 1931 } | |
| 1932 } | |
| 1933 } | |
| 1934 current_frame->initialize_object(type, new_class_type); | |
| 1935 } else { | |
| 1936 verify_error(bci, "Bad operand type when invoking <init>"); | |
| 1937 return; | |
| 1938 } | |
| 1939 } | |
| 1940 | |
| 1941 void ClassVerifier::verify_invoke_instructions( | |
| 1942 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 1943 bool *this_uninit, VerificationType return_type, | |
| 1944 constantPoolHandle cp, TRAPS) { | |
| 1945 // Make sure the constant pool item is the right type | |
| 1565 | 1946 u2 index = bcs->get_index_u2(); |
| 1947 Bytecodes::Code opcode = bcs->raw_code(); | |
| 0 | 1948 unsigned int types = (opcode == Bytecodes::_invokeinterface |
| 1949 ? 1 << JVM_CONSTANT_InterfaceMethodref | |
|
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1950 : opcode == Bytecodes::_invokedynamic |
| 2460 | 1951 ? 1 << JVM_CONSTANT_InvokeDynamic |
| 0 | 1952 : 1 << JVM_CONSTANT_Methodref); |
| 1953 verify_cp_type(index, cp, types, CHECK_VERIFY(this)); | |
| 1954 | |
| 1955 // Get method name and signature | |
|
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1956 Symbol* method_name = cp->name_ref_at(index); |
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1957 Symbol* method_sig = cp->signature_ref_at(index); |
| 0 | 1958 |
| 1959 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
| 1960 class_format_error( | |
| 1961 "Invalid method signature in class %s referenced " | |
| 1962 "from constant pool index %d", _klass->external_name(), index); | |
| 1963 return; | |
| 1964 } | |
| 1965 | |
| 1966 // Get referenced class type | |
|
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1967 VerificationType ref_class_type; |
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1968 if (opcode == Bytecodes::_invokedynamic) { |
| 1602 | 1969 if (!EnableInvokeDynamic || |
| 1970 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
|
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1971 class_format_error( |
| 1602 | 1972 (!EnableInvokeDynamic ? |
| 1973 "invokedynamic instructions not enabled in this JVM" : | |
| 1974 "invokedynamic instructions not supported by this class file version"), | |
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1975 _klass->external_name()); |
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1976 return; |
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1977 } |
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1978 } else { |
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1979 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
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1980 } |
| 0 | 1981 |
| 1982 // For a small signature length, we just allocate 128 bytes instead | |
| 1983 // of parsing the signature once to find its size. | |
| 1984 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
| 1985 // longs/doubles to be consertive. | |
| 1986 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 1987 "buffer type must match VerificationType size"); | |
| 1988 uintptr_t on_stack_sig_types_buffer[128]; | |
| 1989 // If we make a VerificationType[128] array directly, the compiler calls | |
| 1990 // to the c-runtime library to do the allocation instead of just | |
| 1991 // stack allocating it. Plus it would run constructors. This shows up | |
| 1992 // in performance profiles. | |
| 1993 | |
| 1994 VerificationType* sig_types; | |
| 1995 int size = (method_sig->utf8_length() - 3) * 2; | |
| 1996 if (size > 128) { | |
| 1997 // Long and double occupies two slots here. | |
| 1998 ArgumentSizeComputer size_it(method_sig); | |
| 1999 size = size_it.size(); | |
| 2000 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
| 2001 } else{ | |
| 2002 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
| 2003 } | |
| 2004 SignatureStream sig_stream(method_sig); | |
| 2005 int sig_i = 0; | |
| 2006 while (!sig_stream.at_return_type()) { | |
| 2007 sig_i += change_sig_to_verificationType( | |
| 2008 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
| 2009 sig_stream.next(); | |
| 2010 } | |
| 2011 int nargs = sig_i; | |
| 2012 | |
| 2013 #ifdef ASSERT | |
| 2014 { | |
| 2015 ArgumentSizeComputer size_it(method_sig); | |
| 2016 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
| 2017 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
| 2018 } | |
| 2019 #endif | |
| 2020 | |
| 2021 // Check instruction operands | |
| 2022 u2 bci = bcs->bci(); | |
| 2023 if (opcode == Bytecodes::_invokeinterface) { | |
| 2024 address bcp = bcs->bcp(); | |
| 2025 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
| 2026 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
| 2027 // the difference between the size of the operand stack before and after the instruction | |
| 2028 // executes. | |
| 2029 if (*(bcp+3) != (nargs+1)) { | |
| 2030 verify_error(bci, "Inconsistent args count operand in invokeinterface"); | |
| 2031 return; | |
| 2032 } | |
| 2033 if (*(bcp+4) != 0) { | |
| 2034 verify_error(bci, "Fourth operand byte of invokeinterface must be zero"); | |
| 2035 return; | |
| 2036 } | |
| 2037 } | |
| 2038 | |
|
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2039 if (opcode == Bytecodes::_invokedynamic) { |
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2040 address bcp = bcs->bcp(); |
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2041 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
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2042 verify_error(bci, "Third and fourth operand bytes of invokedynamic must be zero"); |
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2043 return; |
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2044 } |
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2045 } |
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2046 |
| 0 | 2047 if (method_name->byte_at(0) == '<') { |
| 2048 // Make sure <init> can only be invoked by invokespecial | |
| 2049 if (opcode != Bytecodes::_invokespecial || | |
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2050 method_name != vmSymbols::object_initializer_name()) { |
| 0 | 2051 verify_error(bci, "Illegal call to internal method"); |
| 2052 return; | |
| 2053 } | |
| 2054 } else if (opcode == Bytecodes::_invokespecial | |
| 2055 && !ref_class_type.equals(current_type()) | |
| 2056 && !ref_class_type.equals(VerificationType::reference_type( | |
| 2057 current_class()->super()->klass_part()->name()))) { | |
| 2058 bool subtype = ref_class_type.is_assignable_from( | |
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2059 current_type(), this, CHECK_VERIFY(this)); |
| 0 | 2060 if (!subtype) { |
| 2061 verify_error(bci, "Bad invokespecial instruction: " | |
| 2062 "current class isn't assignable to reference class."); | |
| 2063 return; | |
| 2064 } | |
| 2065 } | |
| 2066 // Match method descriptor with operand stack | |
| 2067 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
| 2068 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
| 2069 } | |
| 2070 // Check objectref on operand stack | |
|
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2071 if (opcode != Bytecodes::_invokestatic && |
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2072 opcode != Bytecodes::_invokedynamic) { |
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2073 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
| 0 | 2074 verify_invoke_init(bcs, ref_class_type, current_frame, |
| 2075 code_length, this_uninit, cp, CHECK_VERIFY(this)); | |
| 2076 } else { // other methods | |
| 2077 // Ensures that target class is assignable to method class. | |
| 2078 if (opcode == Bytecodes::_invokespecial) { | |
| 2079 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); | |
| 2080 } else if (opcode == Bytecodes::_invokevirtual) { | |
| 2081 VerificationType stack_object_type = | |
| 2082 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2083 if (current_type() != stack_object_type) { | |
| 2084 assert(cp->cache() == NULL, "not rewritten yet"); | |
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2085 Symbol* ref_class_name = |
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2086 cp->klass_name_at(cp->klass_ref_index_at(index)); |
| 0 | 2087 // See the comments in verify_field_instructions() for |
| 2088 // the rationale behind this. | |
|
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2089 if (name_in_supers(ref_class_name, current_class())) { |
| 0 | 2090 klassOop ref_class = load_class(ref_class_name, CHECK); |
| 2091 if (is_protected_access( | |
|
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2092 _klass, ref_class, method_name, method_sig, true)) { |
| 0 | 2093 // It's protected access, check if stack object is |
| 2094 // assignable to current class. | |
| 2095 bool is_assignable = current_type().is_assignable_from( | |
|
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2096 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2097 if (!is_assignable) { |
| 2098 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
| 2099 && stack_object_type.is_array() | |
|
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2100 && method_name == vmSymbols::clone_name()) { |
| 0 | 2101 // Special case: arrays pretend to implement public Object |
| 2102 // clone(). | |
| 2103 } else { | |
| 2104 verify_error(bci, | |
| 2105 "Bad access to protected data in invokevirtual"); | |
| 2106 return; | |
| 2107 } | |
| 2108 } | |
| 2109 } | |
| 2110 } | |
| 2111 } | |
| 2112 } else { | |
| 2113 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
| 2114 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2115 } | |
| 2116 } | |
| 2117 } | |
| 2118 // Push the result type. | |
| 2119 if (sig_stream.type() != T_VOID) { | |
|
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2120 if (method_name == vmSymbols::object_initializer_name()) { |
| 0 | 2121 // <init> method must have a void return type |
| 2122 verify_error(bci, "Return type must be void in <init> method"); | |
| 2123 return; | |
| 2124 } | |
| 2125 VerificationType return_type[2]; | |
| 2126 int n = change_sig_to_verificationType( | |
| 2127 &sig_stream, return_type, CHECK_VERIFY(this)); | |
| 2128 for (int i = 0; i < n; i++) { | |
| 2129 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
| 2130 } | |
| 2131 } | |
| 2132 } | |
| 2133 | |
| 2134 VerificationType ClassVerifier::get_newarray_type( | |
| 2135 u2 index, u2 bci, TRAPS) { | |
| 2136 const char* from_bt[] = { | |
| 2137 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
| 2138 }; | |
| 2139 if (index < T_BOOLEAN || index > T_LONG) { | |
| 2140 verify_error(bci, "Illegal newarray instruction"); | |
| 2141 return VerificationType::bogus_type(); | |
| 2142 } | |
| 2143 | |
| 2144 // from_bt[index] contains the array signature which has a length of 2 | |
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2145 Symbol* sig = create_temporary_symbol( |
| 0 | 2146 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
| 2147 return VerificationType::reference_type(sig); | |
| 2148 } | |
| 2149 | |
| 2150 void ClassVerifier::verify_anewarray( | |
| 2151 u2 index, constantPoolHandle cp, StackMapFrame* current_frame, TRAPS) { | |
| 2152 verify_cp_class_type(index, cp, CHECK_VERIFY(this)); | |
| 2153 current_frame->pop_stack( | |
| 2154 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2155 | |
| 2156 VerificationType component_type = | |
| 2157 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 2158 int length; | |
| 2159 char* arr_sig_str; | |
| 2160 if (component_type.is_array()) { // it's an array | |
| 2161 const char* component_name = component_type.name()->as_utf8(); | |
| 2162 // add one dimension to component | |
| 2163 length = (int)strlen(component_name) + 1; | |
| 2164 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2165 arr_sig_str[0] = '['; | |
| 2166 strncpy(&arr_sig_str[1], component_name, length - 1); | |
| 2167 } else { // it's an object or interface | |
| 2168 const char* component_name = component_type.name()->as_utf8(); | |
| 2169 // add one dimension to component with 'L' prepended and ';' postpended. | |
| 2170 length = (int)strlen(component_name) + 3; | |
| 2171 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2172 arr_sig_str[0] = '['; | |
| 2173 arr_sig_str[1] = 'L'; | |
| 2174 strncpy(&arr_sig_str[2], component_name, length - 2); | |
| 2175 arr_sig_str[length - 1] = ';'; | |
| 2176 } | |
|
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2177 Symbol* arr_sig = create_temporary_symbol( |
| 0 | 2178 arr_sig_str, length, CHECK_VERIFY(this)); |
| 2179 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
| 2180 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 2181 } | |
| 2182 | |
| 2183 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2184 current_frame->get_local( | |
| 2185 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2186 current_frame->push_stack( | |
| 2187 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2188 } | |
| 2189 | |
| 2190 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2191 current_frame->get_local_2( | |
| 2192 index, VerificationType::long_type(), | |
| 2193 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2194 current_frame->push_stack_2( | |
| 2195 VerificationType::long_type(), | |
| 2196 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2197 } | |
| 2198 | |
| 2199 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2200 current_frame->get_local( | |
| 2201 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2202 current_frame->push_stack( | |
| 2203 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2204 } | |
| 2205 | |
| 2206 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2207 current_frame->get_local_2( | |
| 2208 index, VerificationType::double_type(), | |
| 2209 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2210 current_frame->push_stack_2( | |
| 2211 VerificationType::double_type(), | |
| 2212 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2213 } | |
| 2214 | |
| 2215 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2216 VerificationType type = current_frame->get_local( | |
| 2217 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2218 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
| 2219 } | |
| 2220 | |
| 2221 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2222 current_frame->pop_stack( | |
| 2223 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2224 current_frame->set_local( | |
| 2225 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2226 } | |
| 2227 | |
| 2228 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2229 current_frame->pop_stack_2( | |
| 2230 VerificationType::long2_type(), | |
| 2231 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 2232 current_frame->set_local_2( | |
| 2233 index, VerificationType::long_type(), | |
| 2234 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2235 } | |
| 2236 | |
| 2237 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2238 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2239 current_frame->set_local( | |
| 2240 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2241 } | |
| 2242 | |
| 2243 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2244 current_frame->pop_stack_2( | |
| 2245 VerificationType::double2_type(), | |
| 2246 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 2247 current_frame->set_local_2( | |
| 2248 index, VerificationType::double_type(), | |
| 2249 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2250 } | |
| 2251 | |
| 2252 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2253 VerificationType type = current_frame->pop_stack( | |
| 2254 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2255 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2256 } | |
| 2257 | |
| 2258 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2259 VerificationType type = current_frame->get_local( | |
| 2260 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2261 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2262 } | |
| 2263 | |
| 2264 void ClassVerifier::verify_return_value( | |
| 2265 VerificationType return_type, VerificationType type, u2 bci, TRAPS) { | |
| 2266 if (return_type == VerificationType::bogus_type()) { | |
| 2267 verify_error(bci, "Method expects a return value"); | |
| 2268 return; | |
| 2269 } | |
|
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2270 bool match = return_type.is_assignable_from(type, this, CHECK_VERIFY(this)); |
| 0 | 2271 if (!match) { |
| 2272 verify_error(bci, "Bad return type"); | |
| 2273 return; | |
| 2274 } | |
| 2275 } | |
|
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2276 |
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2277 // The verifier creates symbols which are substrings of Symbols. |
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2278 // These are stored in the verifier until the end of verification so that |
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2279 // they can be reference counted. |
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2280 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
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2281 int end, TRAPS) { |
|
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2282 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
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2283 _symbols->push(sym); |
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2284 return sym; |
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2285 } |
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2286 |
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2287 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
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2288 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
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2289 _symbols->push(sym); |
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2290 return sym; |
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2291 } |