Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 8816:729be16a470b
8010667: Non-zero padding is not allowed in splitverifier for tableswitch/lookupswitch instructions.
Summary: Don't check the padding bits if class file version is >= 51.
Reviewed-by: kvn, dholmes, coleenp
| author | hseigel |
|---|---|
| date | Mon, 25 Mar 2013 08:37:28 -0400 |
| parents | 3a531d40ad93 |
| children | b8deb3205b51 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 8060 | 2 * Copyright (c) 1998, 2013, 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" | |
| 6605 | 29 #include "classfile/stackMapFrame.hpp" |
| 30 #include "classfile/stackMapTableFormat.hpp" | |
| 1972 | 31 #include "classfile/systemDictionary.hpp" |
| 32 #include "classfile/verifier.hpp" | |
| 33 #include "classfile/vmSymbols.hpp" | |
| 6605 | 34 #include "interpreter/bytecodes.hpp" |
| 1972 | 35 #include "interpreter/bytecodeStream.hpp" |
| 36 #include "memory/oopFactory.hpp" | |
| 37 #include "memory/resourceArea.hpp" | |
| 38 #include "oops/instanceKlass.hpp" | |
| 39 #include "oops/oop.inline.hpp" | |
| 40 #include "oops/typeArrayOop.hpp" | |
| 41 #include "prims/jvm.h" | |
| 42 #include "runtime/fieldDescriptor.hpp" | |
| 43 #include "runtime/handles.inline.hpp" | |
| 44 #include "runtime/interfaceSupport.hpp" | |
| 45 #include "runtime/javaCalls.hpp" | |
| 46 #include "runtime/orderAccess.hpp" | |
| 47 #include "runtime/os.hpp" | |
| 48 #ifdef TARGET_ARCH_x86 | |
| 49 # include "bytes_x86.hpp" | |
| 50 #endif | |
| 51 #ifdef TARGET_ARCH_sparc | |
| 52 # include "bytes_sparc.hpp" | |
| 53 #endif | |
| 54 #ifdef TARGET_ARCH_zero | |
| 55 # include "bytes_zero.hpp" | |
| 56 #endif | |
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57 #ifdef TARGET_ARCH_arm |
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58 # include "bytes_arm.hpp" |
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59 #endif |
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60 #ifdef TARGET_ARCH_ppc |
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61 # include "bytes_ppc.hpp" |
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62 #endif |
| 0 | 63 |
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64 #define NOFAILOVER_MAJOR_VERSION 51 |
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65 #define NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION 51 |
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66 #define STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION 52 |
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67 |
| 0 | 68 // Access to external entry for VerifyClassCodes - old byte code verifier |
| 69 | |
| 70 extern "C" { | |
| 71 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
| 72 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
| 73 } | |
| 74 | |
| 75 static void* volatile _verify_byte_codes_fn = NULL; | |
| 76 | |
| 77 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
| 78 | |
| 79 static void* verify_byte_codes_fn() { | |
| 80 if (_verify_byte_codes_fn == NULL) { | |
| 81 void *lib_handle = os::native_java_library(); | |
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82 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
| 0 | 83 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 84 if (func == NULL) { | |
| 85 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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86 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
| 0 | 87 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 88 } | |
| 89 } | |
| 90 return (void*)_verify_byte_codes_fn; | |
| 91 } | |
| 92 | |
| 93 | |
| 94 // Methods in Verifier | |
| 95 | |
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96 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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97 return (class_loader == NULL || !should_verify_class) ? |
| 0 | 98 BytecodeVerificationLocal : BytecodeVerificationRemote; |
| 99 } | |
| 100 | |
| 101 bool Verifier::relax_verify_for(oop loader) { | |
| 102 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 103 bool need_verify = | |
| 104 // verifyAll | |
| 105 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
| 106 // verifyRemote | |
| 107 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
| 108 return !need_verify; | |
| 109 } | |
| 110 | |
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111 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
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112 HandleMark hm; |
| 0 | 113 ResourceMark rm(THREAD); |
| 114 | |
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115 Symbol* exception_name = NULL; |
| 0 | 116 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
| 117 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
| 6605 | 118 char* exception_message = message_buffer; |
| 0 | 119 |
| 120 const char* klassName = klass->external_name(); | |
| 6605 | 121 bool can_failover = FailOverToOldVerifier && |
| 122 klass->major_version() < NOFAILOVER_MAJOR_VERSION; | |
| 0 | 123 |
| 124 // If the class should be verified, first see if we can use the split | |
| 125 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
| 126 // is set, then call the inference verifier. | |
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127 if (is_eligible_for_verification(klass, should_verify_class)) { |
| 0 | 128 if (TraceClassInitialization) { |
| 129 tty->print_cr("Start class verification for: %s", klassName); | |
| 130 } | |
| 131 if (UseSplitVerifier && | |
| 132 klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { | |
| 6605 | 133 ClassVerifier split_verifier(klass, THREAD); |
| 134 split_verifier.verify_class(THREAD); | |
| 135 exception_name = split_verifier.result(); | |
| 136 if (can_failover && !HAS_PENDING_EXCEPTION && | |
| 0 | 137 (exception_name == vmSymbols::java_lang_VerifyError() || |
| 138 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
| 6605 | 139 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 140 tty->print_cr( |
| 141 "Fail over class verification to old verifier for: %s", klassName); | |
| 142 } | |
| 143 exception_name = inference_verify( | |
| 144 klass, message_buffer, message_buffer_len, THREAD); | |
| 145 } | |
| 6605 | 146 if (exception_name != NULL) { |
| 147 exception_message = split_verifier.exception_message(); | |
| 148 } | |
| 0 | 149 } else { |
| 150 exception_name = inference_verify( | |
| 151 klass, message_buffer, message_buffer_len, THREAD); | |
| 152 } | |
| 153 | |
| 6605 | 154 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 155 if (HAS_PENDING_EXCEPTION) { |
| 156 tty->print("Verification for %s has", klassName); | |
| 157 tty->print_cr(" exception pending %s ", | |
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158 InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
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159 } else if (exception_name != NULL) { |
| 0 | 160 tty->print_cr("Verification for %s failed", klassName); |
| 161 } | |
| 162 tty->print_cr("End class verification for: %s", klassName); | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 if (HAS_PENDING_EXCEPTION) { | |
| 167 return false; // use the existing exception | |
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168 } else if (exception_name == NULL) { |
| 0 | 169 return true; // verifcation succeeded |
| 170 } else { // VerifyError or ClassFormatError to be created and thrown | |
| 171 ResourceMark rm(THREAD); | |
| 172 instanceKlassHandle kls = | |
| 173 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
| 174 while (!kls.is_null()) { | |
| 175 if (kls == klass) { | |
| 176 // If the class being verified is the exception we're creating | |
| 177 // or one of it's superclasses, we're in trouble and are going | |
| 178 // to infinitely recurse when we try to initialize the exception. | |
| 179 // So bail out here by throwing the preallocated VM error. | |
| 180 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
| 181 } | |
| 182 kls = kls->super(); | |
| 183 } | |
| 184 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
| 6605 | 185 THROW_MSG_(exception_name, exception_message, false); |
| 0 | 186 } |
| 187 } | |
| 188 | |
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189 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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190 Symbol* name = klass->name(); |
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191 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
| 0 | 192 |
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193 return (should_verify_for(klass->class_loader(), should_verify_class) && |
| 0 | 194 // return if the class is a bootstrapping class |
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195 // or defineClass specified not to verify by default (flags override passed arg) |
| 0 | 196 // We need to skip the following four for bootstraping |
| 197 name != vmSymbols::java_lang_Object() && | |
| 198 name != vmSymbols::java_lang_Class() && | |
| 199 name != vmSymbols::java_lang_String() && | |
| 200 name != vmSymbols::java_lang_Throwable() && | |
| 201 | |
| 202 // Can not verify the bytecodes for shared classes because they have | |
| 203 // already been rewritten to contain constant pool cache indices, | |
| 204 // which the verifier can't understand. | |
| 205 // Shared classes shouldn't have stackmaps either. | |
| 206 !klass()->is_shared() && | |
| 207 | |
| 208 // As of the fix for 4486457 we disable verification for all of the | |
| 209 // dynamically-generated bytecodes associated with the 1.4 | |
| 210 // reflection implementation, not just those associated with | |
| 211 // sun/reflect/SerializationConstructorAccessor. | |
| 212 // NOTE: this is called too early in the bootstrapping process to be | |
| 213 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
| 214 (refl_magic_klass == NULL || | |
| 215 !klass->is_subtype_of(refl_magic_klass) || | |
| 216 VerifyReflectionBytecodes) | |
| 217 ); | |
| 218 } | |
| 219 | |
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220 Symbol* Verifier::inference_verify( |
| 0 | 221 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
| 222 JavaThread* thread = (JavaThread*)THREAD; | |
| 223 JNIEnv *env = thread->jni_environment(); | |
| 224 | |
| 225 void* verify_func = verify_byte_codes_fn(); | |
| 226 | |
| 227 if (verify_func == NULL) { | |
| 228 jio_snprintf(message, message_len, "Could not link verifier"); | |
| 229 return vmSymbols::java_lang_VerifyError(); | |
| 230 } | |
| 231 | |
| 232 ResourceMark rm(THREAD); | |
| 6605 | 233 if (VerboseVerification) { |
| 0 | 234 tty->print_cr("Verifying class %s with old format", klass->external_name()); |
| 235 } | |
| 236 | |
| 237 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
| 238 jint result; | |
| 239 | |
| 240 { | |
| 241 HandleMark hm(thread); | |
| 242 ThreadToNativeFromVM ttn(thread); | |
| 243 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
| 244 // code knows that we have left the VM | |
| 245 | |
| 246 if (_is_new_verify_byte_codes_fn) { | |
| 247 verify_byte_codes_fn_new_t func = | |
| 248 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
| 249 result = (*func)(env, cls, message, (int)message_len, | |
| 250 klass->major_version()); | |
| 251 } else { | |
| 252 verify_byte_codes_fn_t func = | |
| 253 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
| 254 result = (*func)(env, cls, message, (int)message_len); | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 JNIHandles::destroy_local(cls); | |
| 259 | |
| 260 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
| 261 // to be changed (still return jboolean (unsigned char)), and result is | |
| 262 // 1 when verification is passed. | |
| 263 if (result == 0) { | |
| 264 return vmSymbols::java_lang_VerifyError(); | |
| 265 } else if (result == 1) { | |
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266 return NULL; // verified. |
| 0 | 267 } else if (result == 2) { |
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268 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
| 0 | 269 } else if (result == 3) { |
| 270 return vmSymbols::java_lang_ClassFormatError(); | |
| 271 } else { | |
| 272 ShouldNotReachHere(); | |
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273 return NULL; |
| 0 | 274 } |
| 275 } | |
| 276 | |
| 6605 | 277 TypeOrigin TypeOrigin::null() { |
| 278 return TypeOrigin(); | |
| 279 } | |
| 280 TypeOrigin TypeOrigin::local(u2 index, StackMapFrame* frame) { | |
| 281 assert(frame != NULL, "Must have a frame"); | |
| 282 return TypeOrigin(CF_LOCALS, index, StackMapFrame::copy(frame), | |
| 283 frame->local_at(index)); | |
| 284 } | |
| 285 TypeOrigin TypeOrigin::stack(u2 index, StackMapFrame* frame) { | |
| 286 assert(frame != NULL, "Must have a frame"); | |
| 287 return TypeOrigin(CF_STACK, index, StackMapFrame::copy(frame), | |
| 288 frame->stack_at(index)); | |
| 289 } | |
| 290 TypeOrigin TypeOrigin::sm_local(u2 index, StackMapFrame* frame) { | |
| 291 assert(frame != NULL, "Must have a frame"); | |
| 292 return TypeOrigin(SM_LOCALS, index, StackMapFrame::copy(frame), | |
| 293 frame->local_at(index)); | |
| 294 } | |
| 295 TypeOrigin TypeOrigin::sm_stack(u2 index, StackMapFrame* frame) { | |
| 296 assert(frame != NULL, "Must have a frame"); | |
| 297 return TypeOrigin(SM_STACK, index, StackMapFrame::copy(frame), | |
| 298 frame->stack_at(index)); | |
| 299 } | |
| 300 TypeOrigin TypeOrigin::bad_index(u2 index) { | |
| 301 return TypeOrigin(BAD_INDEX, index, NULL, VerificationType::bogus_type()); | |
| 302 } | |
| 303 TypeOrigin TypeOrigin::cp(u2 index, VerificationType vt) { | |
| 304 return TypeOrigin(CONST_POOL, index, NULL, vt); | |
| 305 } | |
| 306 TypeOrigin TypeOrigin::signature(VerificationType vt) { | |
| 307 return TypeOrigin(SIG, 0, NULL, vt); | |
| 308 } | |
| 309 TypeOrigin TypeOrigin::implicit(VerificationType t) { | |
| 310 return TypeOrigin(IMPLICIT, 0, NULL, t); | |
| 311 } | |
| 312 TypeOrigin TypeOrigin::frame(StackMapFrame* frame) { | |
| 313 return TypeOrigin(FRAME_ONLY, 0, StackMapFrame::copy(frame), | |
| 314 VerificationType::bogus_type()); | |
| 315 } | |
| 316 | |
| 317 void TypeOrigin::reset_frame() { | |
| 318 if (_frame != NULL) { | |
| 319 _frame->restore(); | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 void TypeOrigin::details(outputStream* ss) const { | |
| 324 _type.print_on(ss); | |
| 325 switch (_origin) { | |
| 326 case CF_LOCALS: | |
| 327 ss->print(" (current frame, locals[%d])", _index); | |
| 328 break; | |
| 329 case CF_STACK: | |
| 330 ss->print(" (current frame, stack[%d])", _index); | |
| 331 break; | |
| 332 case SM_LOCALS: | |
| 333 ss->print(" (stack map, locals[%d])", _index); | |
| 334 break; | |
| 335 case SM_STACK: | |
| 336 ss->print(" (stack map, stack[%d])", _index); | |
| 337 break; | |
| 338 case CONST_POOL: | |
| 339 ss->print(" (constant pool %d)", _index); | |
| 340 break; | |
| 341 case SIG: | |
| 342 ss->print(" (from method signature)"); | |
| 343 break; | |
| 344 case IMPLICIT: | |
| 345 case FRAME_ONLY: | |
| 346 case NONE: | |
| 347 default: | |
| 348 ; | |
| 349 } | |
| 350 } | |
| 351 | |
| 352 #ifdef ASSERT | |
| 353 void TypeOrigin::print_on(outputStream* str) const { | |
| 354 str->print("{%d,%d,%p:", _origin, _index, _frame); | |
| 355 if (_frame != NULL) { | |
| 356 _frame->print_on(str); | |
| 357 } else { | |
| 358 str->print("null"); | |
| 359 } | |
| 360 str->print(","); | |
| 361 _type.print_on(str); | |
| 362 str->print("}"); | |
| 363 } | |
| 364 #endif | |
| 365 | |
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366 void ErrorContext::details(outputStream* ss, Method* method) const { |
| 6605 | 367 if (is_valid()) { |
| 368 ss->print_cr(""); | |
| 369 ss->print_cr("Exception Details:"); | |
| 370 location_details(ss, method); | |
| 371 reason_details(ss); | |
| 372 frame_details(ss); | |
| 373 bytecode_details(ss, method); | |
| 374 handler_details(ss, method); | |
| 375 stackmap_details(ss, method); | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 void ErrorContext::reason_details(outputStream* ss) const { | |
| 380 streamIndentor si(ss); | |
| 381 ss->indent().print_cr("Reason:"); | |
| 382 streamIndentor si2(ss); | |
| 383 ss->indent().print(""); | |
| 384 switch (_fault) { | |
| 385 case INVALID_BYTECODE: | |
| 386 ss->print("Error exists in the bytecode"); | |
| 387 break; | |
| 388 case WRONG_TYPE: | |
| 389 if (_expected.is_valid()) { | |
| 390 ss->print("Type "); | |
| 391 _type.details(ss); | |
| 392 ss->print(" is not assignable to "); | |
| 393 _expected.details(ss); | |
| 394 } else { | |
| 395 ss->print("Invalid type: "); | |
| 396 _type.details(ss); | |
| 397 } | |
| 398 break; | |
| 399 case FLAGS_MISMATCH: | |
| 400 if (_expected.is_valid()) { | |
| 401 ss->print("Current frame's flags are not assignable " | |
| 402 "to stack map frame's."); | |
| 403 } else { | |
| 404 ss->print("Current frame's flags are invalid in this context."); | |
| 405 } | |
| 406 break; | |
| 407 case BAD_CP_INDEX: | |
| 408 ss->print("Constant pool index %d is invalid", _type.index()); | |
| 409 break; | |
| 410 case BAD_LOCAL_INDEX: | |
| 411 ss->print("Local index %d is invalid", _type.index()); | |
| 412 break; | |
| 413 case LOCALS_SIZE_MISMATCH: | |
| 414 ss->print("Current frame's local size doesn't match stackmap."); | |
| 415 break; | |
| 416 case STACK_SIZE_MISMATCH: | |
| 417 ss->print("Current frame's stack size doesn't match stackmap."); | |
| 418 break; | |
| 419 case STACK_OVERFLOW: | |
| 420 ss->print("Exceeded max stack size."); | |
| 421 break; | |
| 422 case STACK_UNDERFLOW: | |
| 423 ss->print("Attempt to pop empty stack."); | |
| 424 break; | |
| 425 case MISSING_STACKMAP: | |
| 426 ss->print("Expected stackmap frame at this location."); | |
| 427 break; | |
| 428 case BAD_STACKMAP: | |
| 429 ss->print("Invalid stackmap specification."); | |
| 430 break; | |
| 431 case UNKNOWN: | |
| 432 default: | |
| 433 ShouldNotReachHere(); | |
| 434 ss->print_cr("Unknown"); | |
| 435 } | |
| 436 ss->print_cr(""); | |
| 437 } | |
| 438 | |
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439 void ErrorContext::location_details(outputStream* ss, Method* method) const { |
| 6605 | 440 if (_bci != -1 && method != NULL) { |
| 441 streamIndentor si(ss); | |
| 442 const char* bytecode_name = "<invalid>"; | |
| 443 if (method->validate_bci_from_bcx(_bci) != -1) { | |
| 444 Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); | |
| 445 if (Bytecodes::is_defined(code)) { | |
| 446 bytecode_name = Bytecodes::name(code); | |
| 447 } else { | |
| 448 bytecode_name = "<illegal>"; | |
| 449 } | |
| 450 } | |
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451 InstanceKlass* ik = method->method_holder(); |
| 6605 | 452 ss->indent().print_cr("Location:"); |
| 453 streamIndentor si2(ss); | |
| 454 ss->indent().print_cr("%s.%s%s @%d: %s", | |
| 455 ik->name()->as_C_string(), method->name()->as_C_string(), | |
| 456 method->signature()->as_C_string(), _bci, bytecode_name); | |
| 457 } | |
| 458 } | |
| 459 | |
| 460 void ErrorContext::frame_details(outputStream* ss) const { | |
| 461 streamIndentor si(ss); | |
| 462 if (_type.is_valid() && _type.frame() != NULL) { | |
| 463 ss->indent().print_cr("Current Frame:"); | |
| 464 streamIndentor si2(ss); | |
| 465 _type.frame()->print_on(ss); | |
| 466 } | |
| 467 if (_expected.is_valid() && _expected.frame() != NULL) { | |
| 468 ss->indent().print_cr("Stackmap Frame:"); | |
| 469 streamIndentor si2(ss); | |
| 470 _expected.frame()->print_on(ss); | |
| 471 } | |
| 472 } | |
| 473 | |
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474 void ErrorContext::bytecode_details(outputStream* ss, Method* method) const { |
| 6605 | 475 if (method != NULL) { |
| 476 streamIndentor si(ss); | |
| 477 ss->indent().print_cr("Bytecode:"); | |
| 478 streamIndentor si2(ss); | |
| 479 ss->print_data(method->code_base(), method->code_size(), false); | |
| 480 } | |
| 481 } | |
| 482 | |
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483 void ErrorContext::handler_details(outputStream* ss, Method* method) const { |
| 6605 | 484 if (method != NULL) { |
| 485 streamIndentor si(ss); | |
| 486 ExceptionTable table(method); | |
| 487 if (table.length() > 0) { | |
| 488 ss->indent().print_cr("Exception Handler Table:"); | |
| 489 streamIndentor si2(ss); | |
| 490 for (int i = 0; i < table.length(); ++i) { | |
| 491 ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), | |
| 492 table.end_pc(i), table.handler_pc(i)); | |
| 493 } | |
| 494 } | |
| 495 } | |
| 496 } | |
| 497 | |
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498 void ErrorContext::stackmap_details(outputStream* ss, Method* method) const { |
| 6605 | 499 if (method != NULL && method->has_stackmap_table()) { |
| 500 streamIndentor si(ss); | |
| 501 ss->indent().print_cr("Stackmap Table:"); | |
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502 Array<u1>* data = method->stackmap_data(); |
| 6605 | 503 stack_map_table* sm_table = |
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504 stack_map_table::at((address)data->adr_at(0)); |
| 6605 | 505 stack_map_frame* sm_frame = sm_table->entries(); |
| 506 streamIndentor si2(ss); | |
| 507 int current_offset = -1; | |
| 508 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { | |
| 509 ss->indent(); | |
| 510 sm_frame->print_on(ss, current_offset); | |
| 511 ss->print_cr(""); | |
| 512 current_offset += sm_frame->offset_delta(); | |
| 513 sm_frame = sm_frame->next(); | |
| 514 } | |
| 515 } | |
| 516 } | |
| 517 | |
| 0 | 518 // Methods in ClassVerifier |
| 519 | |
| 520 ClassVerifier::ClassVerifier( | |
| 6605 | 521 instanceKlassHandle klass, TRAPS) |
| 522 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { | |
| 0 | 523 _this_type = VerificationType::reference_type(klass->name()); |
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524 // Create list to hold symbols in reference area. |
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525 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
| 0 | 526 } |
| 527 | |
| 528 ClassVerifier::~ClassVerifier() { | |
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529 // Decrement the reference count for any symbols created. |
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530 for (int i = 0; i < _symbols->length(); i++) { |
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531 Symbol* s = _symbols->at(i); |
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532 s->decrement_refcount(); |
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533 } |
| 0 | 534 } |
| 535 | |
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536 VerificationType ClassVerifier::object_type() const { |
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537 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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538 } |
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539 |
| 6605 | 540 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
| 541 VerificationType vt = VerificationType::reference_type( | |
| 542 create_temporary_symbol(sig, (int)strlen(sig), THREAD)); | |
| 543 return TypeOrigin::implicit(vt); | |
| 544 } | |
| 545 | |
| 0 | 546 void ClassVerifier::verify_class(TRAPS) { |
| 6605 | 547 if (VerboseVerification) { |
| 0 | 548 tty->print_cr("Verifying class %s with new format", |
| 549 _klass->external_name()); | |
| 550 } | |
| 551 | |
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552 Array<Method*>* methods = _klass->methods(); |
| 0 | 553 int num_methods = methods->length(); |
| 554 | |
| 555 for (int index = 0; index < num_methods; index++) { | |
| 1570 | 556 // Check for recursive re-verification before each method. |
| 557 if (was_recursively_verified()) return; | |
| 558 | |
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559 Method* m = methods->at(index); |
| 6934 | 560 if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
| 0 | 561 // If m is native or abstract, skip it. It is checked in class file |
| 6934 | 562 // parser that methods do not override a final method. Overpass methods |
| 563 // are trusted since the VM generates them. | |
| 0 | 564 continue; |
| 565 } | |
| 566 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
| 567 } | |
| 1570 | 568 |
| 6605 | 569 if (VerboseVerification || TraceClassInitialization) { |
| 1570 | 570 if (was_recursively_verified()) |
| 571 tty->print_cr("Recursive verification detected for: %s", | |
| 572 _klass->external_name()); | |
| 573 } | |
| 0 | 574 } |
| 575 | |
| 576 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
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577 HandleMark hm(THREAD); |
| 0 | 578 _method = m; // initialize _method |
| 6605 | 579 if (VerboseVerification) { |
| 0 | 580 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
| 581 } | |
| 582 | |
| 583 const char* bad_type_msg = "Bad type on operand stack in %s"; | |
| 584 | |
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585 int32_t max_stack = m->verifier_max_stack(); |
| 0 | 586 int32_t max_locals = m->max_locals(); |
| 587 constantPoolHandle cp(THREAD, m->constants()); | |
| 588 | |
| 589 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
| 590 class_format_error("Invalid method signature"); | |
| 591 return; | |
| 592 } | |
| 593 | |
| 594 // Initial stack map frame: offset is 0, stack is initially empty. | |
| 595 StackMapFrame current_frame(max_locals, max_stack, this); | |
| 596 // Set initial locals | |
| 597 VerificationType return_type = current_frame.set_locals_from_arg( | |
| 598 m, current_type(), CHECK_VERIFY(this)); | |
| 599 | |
| 600 int32_t stackmap_index = 0; // index to the stackmap array | |
| 601 | |
| 602 u4 code_length = m->code_size(); | |
| 603 | |
| 604 // Scan the bytecode and map each instruction's start offset to a number. | |
| 605 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
| 606 | |
| 607 int ex_min = code_length; | |
| 608 int ex_max = -1; | |
| 609 // Look through each item on the exception table. Each of the fields must refer | |
| 610 // to a legal instruction. | |
| 611 verify_exception_handler_table( | |
| 612 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
| 613 | |
| 614 // Look through each entry on the local variable table and make sure | |
| 615 // its range of code array offsets is valid. (4169817) | |
| 616 if (m->has_localvariable_table()) { | |
| 617 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
| 618 } | |
| 619 | |
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620 Array<u1>* stackmap_data = m->stackmap_data(); |
| 0 | 621 StackMapStream stream(stackmap_data); |
| 622 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
| 623 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
| 624 code_data, code_length, CHECK_VERIFY(this)); | |
| 625 | |
| 6605 | 626 if (VerboseVerification) { |
| 627 stackmap_table.print_on(tty); | |
| 0 | 628 } |
| 629 | |
| 630 RawBytecodeStream bcs(m); | |
| 631 | |
| 632 // Scan the byte code linearly from the start to the end | |
| 633 bool no_control_flow = false; // Set to true when there is no direct control | |
| 634 // flow from current instruction to the next | |
| 635 // instruction in sequence | |
| 636 Bytecodes::Code opcode; | |
| 637 while (!bcs.is_last_bytecode()) { | |
| 1570 | 638 // Check for recursive re-verification before each bytecode. |
| 639 if (was_recursively_verified()) return; | |
| 640 | |
| 0 | 641 opcode = bcs.raw_next(); |
| 642 u2 bci = bcs.bci(); | |
| 643 | |
| 644 // Set current frame's offset to bci | |
| 645 current_frame.set_offset(bci); | |
| 6605 | 646 current_frame.set_mark(); |
| 0 | 647 |
| 648 // Make sure every offset in stackmap table point to the beginning to | |
| 649 // an instruction. Match current_frame to stackmap_table entry with | |
| 650 // the same offset if exists. | |
| 651 stackmap_index = verify_stackmap_table( | |
| 652 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
| 653 no_control_flow, CHECK_VERIFY(this)); | |
| 654 | |
| 6605 | 655 |
| 0 | 656 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
| 657 | |
| 658 // Merge with the next instruction | |
| 659 { | |
| 660 u2 index; | |
| 661 int target; | |
| 662 VerificationType type, type2; | |
| 663 VerificationType atype; | |
| 664 | |
| 665 #ifndef PRODUCT | |
| 6605 | 666 if (VerboseVerification) { |
| 667 current_frame.print_on(tty); | |
| 0 | 668 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
| 669 } | |
| 670 #endif | |
| 671 | |
| 672 // Make sure wide instruction is in correct format | |
| 673 if (bcs.is_wide()) { | |
| 674 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
| 675 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
| 676 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
| 677 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
| 678 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
| 679 opcode != Bytecodes::_dstore) { | |
| 6605 | 680 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
| 681 * if we encounter a wide instruction that modifies an invalid | |
| 682 * opcode (not one of the ones listed above) */ | |
| 683 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
| 0 | 684 return; |
| 685 } | |
| 686 } | |
| 687 | |
| 688 switch (opcode) { | |
| 689 case Bytecodes::_nop : | |
| 690 no_control_flow = false; break; | |
| 691 case Bytecodes::_aconst_null : | |
| 692 current_frame.push_stack( | |
| 693 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 694 no_control_flow = false; break; | |
| 695 case Bytecodes::_iconst_m1 : | |
| 696 case Bytecodes::_iconst_0 : | |
| 697 case Bytecodes::_iconst_1 : | |
| 698 case Bytecodes::_iconst_2 : | |
| 699 case Bytecodes::_iconst_3 : | |
| 700 case Bytecodes::_iconst_4 : | |
| 701 case Bytecodes::_iconst_5 : | |
| 702 current_frame.push_stack( | |
| 703 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 704 no_control_flow = false; break; | |
| 705 case Bytecodes::_lconst_0 : | |
| 706 case Bytecodes::_lconst_1 : | |
| 707 current_frame.push_stack_2( | |
| 708 VerificationType::long_type(), | |
| 709 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 710 no_control_flow = false; break; | |
| 711 case Bytecodes::_fconst_0 : | |
| 712 case Bytecodes::_fconst_1 : | |
| 713 case Bytecodes::_fconst_2 : | |
| 714 current_frame.push_stack( | |
| 715 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 716 no_control_flow = false; break; | |
| 717 case Bytecodes::_dconst_0 : | |
| 718 case Bytecodes::_dconst_1 : | |
| 719 current_frame.push_stack_2( | |
| 720 VerificationType::double_type(), | |
| 721 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 722 no_control_flow = false; break; | |
| 723 case Bytecodes::_sipush : | |
| 724 case Bytecodes::_bipush : | |
| 725 current_frame.push_stack( | |
| 726 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 727 no_control_flow = false; break; | |
| 728 case Bytecodes::_ldc : | |
| 729 verify_ldc( | |
| 1565 | 730 opcode, bcs.get_index_u1(), ¤t_frame, |
| 0 | 731 cp, bci, CHECK_VERIFY(this)); |
| 732 no_control_flow = false; break; | |
| 733 case Bytecodes::_ldc_w : | |
| 734 case Bytecodes::_ldc2_w : | |
| 735 verify_ldc( | |
| 1565 | 736 opcode, bcs.get_index_u2(), ¤t_frame, |
| 0 | 737 cp, bci, CHECK_VERIFY(this)); |
| 738 no_control_flow = false; break; | |
| 739 case Bytecodes::_iload : | |
| 740 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 741 no_control_flow = false; break; | |
| 742 case Bytecodes::_iload_0 : | |
| 743 case Bytecodes::_iload_1 : | |
| 744 case Bytecodes::_iload_2 : | |
| 745 case Bytecodes::_iload_3 : | |
| 746 index = opcode - Bytecodes::_iload_0; | |
| 747 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 748 no_control_flow = false; break; | |
| 749 case Bytecodes::_lload : | |
| 750 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 751 no_control_flow = false; break; | |
| 752 case Bytecodes::_lload_0 : | |
| 753 case Bytecodes::_lload_1 : | |
| 754 case Bytecodes::_lload_2 : | |
| 755 case Bytecodes::_lload_3 : | |
| 756 index = opcode - Bytecodes::_lload_0; | |
| 757 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 758 no_control_flow = false; break; | |
| 759 case Bytecodes::_fload : | |
| 760 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 761 no_control_flow = false; break; | |
| 762 case Bytecodes::_fload_0 : | |
| 763 case Bytecodes::_fload_1 : | |
| 764 case Bytecodes::_fload_2 : | |
| 765 case Bytecodes::_fload_3 : | |
| 766 index = opcode - Bytecodes::_fload_0; | |
| 767 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 768 no_control_flow = false; break; | |
| 769 case Bytecodes::_dload : | |
| 770 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 771 no_control_flow = false; break; | |
| 772 case Bytecodes::_dload_0 : | |
| 773 case Bytecodes::_dload_1 : | |
| 774 case Bytecodes::_dload_2 : | |
| 775 case Bytecodes::_dload_3 : | |
| 776 index = opcode - Bytecodes::_dload_0; | |
| 777 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 778 no_control_flow = false; break; | |
| 779 case Bytecodes::_aload : | |
| 780 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 781 no_control_flow = false; break; | |
| 782 case Bytecodes::_aload_0 : | |
| 783 case Bytecodes::_aload_1 : | |
| 784 case Bytecodes::_aload_2 : | |
| 785 case Bytecodes::_aload_3 : | |
| 786 index = opcode - Bytecodes::_aload_0; | |
| 787 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 788 no_control_flow = false; break; | |
| 789 case Bytecodes::_iaload : | |
| 790 type = current_frame.pop_stack( | |
| 791 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 792 atype = current_frame.pop_stack( | |
| 793 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 794 if (!atype.is_int_array()) { | |
| 6605 | 795 verify_error(ErrorContext::bad_type(bci, |
| 796 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 797 bad_type_msg, "iaload"); | |
| 0 | 798 return; |
| 799 } | |
| 800 current_frame.push_stack( | |
| 801 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 802 no_control_flow = false; break; | |
| 803 case Bytecodes::_baload : | |
| 804 type = current_frame.pop_stack( | |
| 805 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 806 atype = current_frame.pop_stack( | |
| 807 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 808 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 809 verify_error( |
| 810 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 811 bad_type_msg, "baload"); | |
| 0 | 812 return; |
| 813 } | |
| 814 current_frame.push_stack( | |
| 815 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 816 no_control_flow = false; break; | |
| 817 case Bytecodes::_caload : | |
| 818 type = current_frame.pop_stack( | |
| 819 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 820 atype = current_frame.pop_stack( | |
| 821 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 822 if (!atype.is_char_array()) { | |
| 6605 | 823 verify_error(ErrorContext::bad_type(bci, |
| 824 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 825 bad_type_msg, "caload"); | |
| 0 | 826 return; |
| 827 } | |
| 828 current_frame.push_stack( | |
| 829 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 830 no_control_flow = false; break; | |
| 831 case Bytecodes::_saload : | |
| 832 type = current_frame.pop_stack( | |
| 833 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 834 atype = current_frame.pop_stack( | |
| 835 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 836 if (!atype.is_short_array()) { | |
| 6605 | 837 verify_error(ErrorContext::bad_type(bci, |
| 838 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 839 bad_type_msg, "saload"); | |
| 0 | 840 return; |
| 841 } | |
| 842 current_frame.push_stack( | |
| 843 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 844 no_control_flow = false; break; | |
| 845 case Bytecodes::_laload : | |
| 846 type = current_frame.pop_stack( | |
| 847 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 848 atype = current_frame.pop_stack( | |
| 849 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 850 if (!atype.is_long_array()) { | |
| 6605 | 851 verify_error(ErrorContext::bad_type(bci, |
| 852 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 853 bad_type_msg, "laload"); | |
| 0 | 854 return; |
| 855 } | |
| 856 current_frame.push_stack_2( | |
| 857 VerificationType::long_type(), | |
| 858 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 859 no_control_flow = false; break; | |
| 860 case Bytecodes::_faload : | |
| 861 type = current_frame.pop_stack( | |
| 862 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 863 atype = current_frame.pop_stack( | |
| 864 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 865 if (!atype.is_float_array()) { | |
| 6605 | 866 verify_error(ErrorContext::bad_type(bci, |
| 867 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 868 bad_type_msg, "faload"); | |
| 0 | 869 return; |
| 870 } | |
| 871 current_frame.push_stack( | |
| 872 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 873 no_control_flow = false; break; | |
| 874 case Bytecodes::_daload : | |
| 875 type = current_frame.pop_stack( | |
| 876 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 877 atype = current_frame.pop_stack( | |
| 878 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 879 if (!atype.is_double_array()) { | |
| 6605 | 880 verify_error(ErrorContext::bad_type(bci, |
| 881 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 882 bad_type_msg, "daload"); | |
| 0 | 883 return; |
| 884 } | |
| 885 current_frame.push_stack_2( | |
| 886 VerificationType::double_type(), | |
| 887 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 888 no_control_flow = false; break; | |
| 889 case Bytecodes::_aaload : { | |
| 890 type = current_frame.pop_stack( | |
| 891 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 892 atype = current_frame.pop_stack( | |
| 893 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 894 if (!atype.is_reference_array()) { | |
| 6605 | 895 verify_error(ErrorContext::bad_type(bci, |
| 896 current_frame.stack_top_ctx(), | |
| 897 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 898 bad_type_msg, "aaload"); | |
| 0 | 899 return; |
| 900 } | |
| 901 if (atype.is_null()) { | |
| 902 current_frame.push_stack( | |
| 903 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 904 } else { | |
| 905 VerificationType component = | |
|
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|
906 atype.get_component(this, CHECK_VERIFY(this)); |
| 0 | 907 current_frame.push_stack(component, CHECK_VERIFY(this)); |
| 908 } | |
| 909 no_control_flow = false; break; | |
| 910 } | |
| 911 case Bytecodes::_istore : | |
| 912 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 913 no_control_flow = false; break; | |
| 914 case Bytecodes::_istore_0 : | |
| 915 case Bytecodes::_istore_1 : | |
| 916 case Bytecodes::_istore_2 : | |
| 917 case Bytecodes::_istore_3 : | |
| 918 index = opcode - Bytecodes::_istore_0; | |
| 919 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 920 no_control_flow = false; break; | |
| 921 case Bytecodes::_lstore : | |
| 922 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 923 no_control_flow = false; break; | |
| 924 case Bytecodes::_lstore_0 : | |
| 925 case Bytecodes::_lstore_1 : | |
| 926 case Bytecodes::_lstore_2 : | |
| 927 case Bytecodes::_lstore_3 : | |
| 928 index = opcode - Bytecodes::_lstore_0; | |
| 929 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 930 no_control_flow = false; break; | |
| 931 case Bytecodes::_fstore : | |
| 932 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 933 no_control_flow = false; break; | |
| 934 case Bytecodes::_fstore_0 : | |
| 935 case Bytecodes::_fstore_1 : | |
| 936 case Bytecodes::_fstore_2 : | |
| 937 case Bytecodes::_fstore_3 : | |
| 938 index = opcode - Bytecodes::_fstore_0; | |
| 939 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 940 no_control_flow = false; break; | |
| 941 case Bytecodes::_dstore : | |
| 942 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 943 no_control_flow = false; break; | |
| 944 case Bytecodes::_dstore_0 : | |
| 945 case Bytecodes::_dstore_1 : | |
| 946 case Bytecodes::_dstore_2 : | |
| 947 case Bytecodes::_dstore_3 : | |
| 948 index = opcode - Bytecodes::_dstore_0; | |
| 949 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 950 no_control_flow = false; break; | |
| 951 case Bytecodes::_astore : | |
| 952 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 953 no_control_flow = false; break; | |
| 954 case Bytecodes::_astore_0 : | |
| 955 case Bytecodes::_astore_1 : | |
| 956 case Bytecodes::_astore_2 : | |
| 957 case Bytecodes::_astore_3 : | |
| 958 index = opcode - Bytecodes::_astore_0; | |
| 959 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 960 no_control_flow = false; break; | |
| 961 case Bytecodes::_iastore : | |
| 962 type = current_frame.pop_stack( | |
| 963 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 964 type2 = current_frame.pop_stack( | |
| 965 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 966 atype = current_frame.pop_stack( | |
| 967 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 968 if (!atype.is_int_array()) { | |
| 6605 | 969 verify_error(ErrorContext::bad_type(bci, |
| 970 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 971 bad_type_msg, "iastore"); | |
| 0 | 972 return; |
| 973 } | |
| 974 no_control_flow = false; break; | |
| 975 case Bytecodes::_bastore : | |
| 976 type = current_frame.pop_stack( | |
| 977 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 978 type2 = current_frame.pop_stack( | |
| 979 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 980 atype = current_frame.pop_stack( | |
| 981 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 982 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 983 verify_error( |
| 984 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 985 bad_type_msg, "bastore"); | |
| 0 | 986 return; |
| 987 } | |
| 988 no_control_flow = false; break; | |
| 989 case Bytecodes::_castore : | |
| 990 current_frame.pop_stack( | |
| 991 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 992 current_frame.pop_stack( | |
| 993 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 994 atype = current_frame.pop_stack( | |
| 995 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 996 if (!atype.is_char_array()) { | |
| 6605 | 997 verify_error(ErrorContext::bad_type(bci, |
| 998 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 999 bad_type_msg, "castore"); | |
| 0 | 1000 return; |
| 1001 } | |
| 1002 no_control_flow = false; break; | |
| 1003 case Bytecodes::_sastore : | |
| 1004 current_frame.pop_stack( | |
| 1005 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1006 current_frame.pop_stack( | |
| 1007 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1008 atype = current_frame.pop_stack( | |
| 1009 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1010 if (!atype.is_short_array()) { | |
| 6605 | 1011 verify_error(ErrorContext::bad_type(bci, |
| 1012 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 1013 bad_type_msg, "sastore"); | |
| 0 | 1014 return; |
| 1015 } | |
| 1016 no_control_flow = false; break; | |
| 1017 case Bytecodes::_lastore : | |
| 1018 current_frame.pop_stack_2( | |
| 1019 VerificationType::long2_type(), | |
| 1020 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1021 current_frame.pop_stack( | |
| 1022 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1023 atype = current_frame.pop_stack( | |
| 1024 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1025 if (!atype.is_long_array()) { | |
| 6605 | 1026 verify_error(ErrorContext::bad_type(bci, |
| 1027 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 1028 bad_type_msg, "lastore"); | |
| 0 | 1029 return; |
| 1030 } | |
| 1031 no_control_flow = false; break; | |
| 1032 case Bytecodes::_fastore : | |
| 1033 current_frame.pop_stack( | |
| 1034 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1035 current_frame.pop_stack | |
| 1036 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1037 atype = current_frame.pop_stack( | |
| 1038 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1039 if (!atype.is_float_array()) { | |
| 6605 | 1040 verify_error(ErrorContext::bad_type(bci, |
| 1041 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 1042 bad_type_msg, "fastore"); | |
| 0 | 1043 return; |
| 1044 } | |
| 1045 no_control_flow = false; break; | |
| 1046 case Bytecodes::_dastore : | |
| 1047 current_frame.pop_stack_2( | |
| 1048 VerificationType::double2_type(), | |
| 1049 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1050 current_frame.pop_stack( | |
| 1051 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1052 atype = current_frame.pop_stack( | |
| 1053 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1054 if (!atype.is_double_array()) { | |
| 6605 | 1055 verify_error(ErrorContext::bad_type(bci, |
| 1056 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 1057 bad_type_msg, "dastore"); | |
| 0 | 1058 return; |
| 1059 } | |
| 1060 no_control_flow = false; break; | |
| 1061 case Bytecodes::_aastore : | |
|
1955
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6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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1678
diff
changeset
|
1062 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1063 type2 = current_frame.pop_stack( |
| 1064 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1065 atype = current_frame.pop_stack( | |
| 1066 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1067 // more type-checking is done at runtime | |
| 1068 if (!atype.is_reference_array()) { | |
| 6605 | 1069 verify_error(ErrorContext::bad_type(bci, |
| 1070 current_frame.stack_top_ctx(), | |
| 1071 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 1072 bad_type_msg, "aastore"); | |
| 0 | 1073 return; |
| 1074 } | |
| 1075 // 4938384: relaxed constraint in JVMS 3nd edition. | |
| 1076 no_control_flow = false; break; | |
| 1077 case Bytecodes::_pop : | |
| 1078 current_frame.pop_stack( | |
| 1079 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1080 no_control_flow = false; break; | |
| 1081 case Bytecodes::_pop2 : | |
| 1082 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1083 if (type.is_category1()) { | |
| 1084 current_frame.pop_stack( | |
| 1085 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1086 } else if (type.is_category2_2nd()) { | |
| 1087 current_frame.pop_stack( | |
| 1088 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1089 } else { | |
| 6605 | 1090 /* Unreachable? Would need a category2_1st on TOS |
| 1091 * which does not appear possible. */ | |
| 1092 verify_error( | |
| 1093 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1094 bad_type_msg, "pop2"); | |
| 0 | 1095 return; |
| 1096 } | |
| 1097 no_control_flow = false; break; | |
| 1098 case Bytecodes::_dup : | |
| 1099 type = current_frame.pop_stack( | |
| 1100 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1101 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1102 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1103 no_control_flow = false; break; | |
| 1104 case Bytecodes::_dup_x1 : | |
| 1105 type = current_frame.pop_stack( | |
| 1106 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1107 type2 = current_frame.pop_stack( | |
| 1108 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1109 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1110 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1111 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1112 no_control_flow = false; break; | |
| 1113 case Bytecodes::_dup_x2 : | |
| 1114 { | |
| 1115 VerificationType type3; | |
| 1116 type = current_frame.pop_stack( | |
| 1117 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1118 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1119 if (type2.is_category1()) { | |
| 1120 type3 = current_frame.pop_stack( | |
| 1121 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1122 } else if (type2.is_category2_2nd()) { | |
| 1123 type3 = current_frame.pop_stack( | |
| 1124 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1125 } else { | |
| 6605 | 1126 /* Unreachable? Would need a category2_1st at stack depth 2 with |
| 1127 * a category1 on TOS which does not appear possible. */ | |
| 1128 verify_error(ErrorContext::bad_type( | |
| 1129 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
| 0 | 1130 return; |
| 1131 } | |
| 1132 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1133 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1134 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1135 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1136 no_control_flow = false; break; | |
| 1137 } | |
| 1138 case Bytecodes::_dup2 : | |
| 1139 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1140 if (type.is_category1()) { | |
| 1141 type2 = current_frame.pop_stack( | |
| 1142 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1143 } else if (type.is_category2_2nd()) { | |
| 1144 type2 = current_frame.pop_stack( | |
| 1145 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1146 } else { | |
| 6605 | 1147 /* Unreachable? Would need a category2_1st on TOS which does not |
| 1148 * appear possible. */ | |
| 1149 verify_error( | |
| 1150 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1151 bad_type_msg, "dup2"); | |
| 0 | 1152 return; |
| 1153 } | |
| 1154 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1155 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1156 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1157 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1158 no_control_flow = false; break; | |
| 1159 case Bytecodes::_dup2_x1 : | |
| 1160 { | |
| 1161 VerificationType type3; | |
| 1162 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1163 if (type.is_category1()) { | |
| 1164 type2 = current_frame.pop_stack( | |
| 1165 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 6605 | 1166 } else if (type.is_category2_2nd()) { |
| 1167 type2 = current_frame.pop_stack( | |
| 1168 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 0 | 1169 } else { |
| 6605 | 1170 /* Unreachable? Would need a category2_1st on TOS which does |
| 1171 * not appear possible. */ | |
| 1172 verify_error( | |
| 1173 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1174 bad_type_msg, "dup2_x1"); | |
| 0 | 1175 return; |
| 1176 } | |
| 1177 type3 = current_frame.pop_stack( | |
| 1178 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1179 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1180 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1181 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1182 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1183 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1184 no_control_flow = false; break; | |
| 1185 } | |
| 1186 case Bytecodes::_dup2_x2 : | |
| 1187 { | |
| 1188 VerificationType type3, type4; | |
| 1189 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1190 if (type.is_category1()) { | |
| 1191 type2 = current_frame.pop_stack( | |
| 1192 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1193 } else if (type.is_category2_2nd()) { | |
| 1194 type2 = current_frame.pop_stack( | |
| 1195 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1196 } else { | |
| 6605 | 1197 /* Unreachable? Would need a category2_1st on TOS which does |
| 1198 * not appear possible. */ | |
| 1199 verify_error( | |
| 1200 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1201 bad_type_msg, "dup2_x2"); | |
| 0 | 1202 return; |
| 1203 } | |
| 1204 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1205 if (type3.is_category1()) { | |
| 1206 type4 = current_frame.pop_stack( | |
| 1207 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1208 } else if (type3.is_category2_2nd()) { | |
| 1209 type4 = current_frame.pop_stack( | |
| 1210 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1211 } else { | |
| 6605 | 1212 /* Unreachable? Would need a category2_1st on TOS after popping |
| 1213 * a long/double or two category 1's, which does not | |
| 1214 * appear possible. */ | |
| 1215 verify_error( | |
| 1216 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1217 bad_type_msg, "dup2_x2"); | |
| 0 | 1218 return; |
| 1219 } | |
| 1220 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1221 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1222 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
| 1223 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1224 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1225 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1226 no_control_flow = false; break; | |
| 1227 } | |
| 1228 case Bytecodes::_swap : | |
| 1229 type = current_frame.pop_stack( | |
| 1230 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1231 type2 = current_frame.pop_stack( | |
| 1232 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1233 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1234 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1235 no_control_flow = false; break; | |
| 1236 case Bytecodes::_iadd : | |
| 1237 case Bytecodes::_isub : | |
| 1238 case Bytecodes::_imul : | |
| 1239 case Bytecodes::_idiv : | |
| 1240 case Bytecodes::_irem : | |
| 1241 case Bytecodes::_ishl : | |
| 1242 case Bytecodes::_ishr : | |
| 1243 case Bytecodes::_iushr : | |
| 1244 case Bytecodes::_ior : | |
| 1245 case Bytecodes::_ixor : | |
| 1246 case Bytecodes::_iand : | |
| 1247 current_frame.pop_stack( | |
| 1248 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1249 // fall through | |
| 1250 case Bytecodes::_ineg : | |
| 1251 current_frame.pop_stack( | |
| 1252 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1253 current_frame.push_stack( | |
| 1254 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1255 no_control_flow = false; break; | |
| 1256 case Bytecodes::_ladd : | |
| 1257 case Bytecodes::_lsub : | |
| 1258 case Bytecodes::_lmul : | |
| 1259 case Bytecodes::_ldiv : | |
| 1260 case Bytecodes::_lrem : | |
| 1261 case Bytecodes::_land : | |
| 1262 case Bytecodes::_lor : | |
| 1263 case Bytecodes::_lxor : | |
| 1264 current_frame.pop_stack_2( | |
| 1265 VerificationType::long2_type(), | |
| 1266 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1267 // fall through | |
| 1268 case Bytecodes::_lneg : | |
| 1269 current_frame.pop_stack_2( | |
| 1270 VerificationType::long2_type(), | |
| 1271 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1272 current_frame.push_stack_2( | |
| 1273 VerificationType::long_type(), | |
| 1274 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1275 no_control_flow = false; break; | |
| 1276 case Bytecodes::_lshl : | |
| 1277 case Bytecodes::_lshr : | |
| 1278 case Bytecodes::_lushr : | |
| 1279 current_frame.pop_stack( | |
| 1280 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1281 current_frame.pop_stack_2( | |
| 1282 VerificationType::long2_type(), | |
| 1283 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1284 current_frame.push_stack_2( | |
| 1285 VerificationType::long_type(), | |
| 1286 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1287 no_control_flow = false; break; | |
| 1288 case Bytecodes::_fadd : | |
| 1289 case Bytecodes::_fsub : | |
| 1290 case Bytecodes::_fmul : | |
| 1291 case Bytecodes::_fdiv : | |
| 1292 case Bytecodes::_frem : | |
| 1293 current_frame.pop_stack( | |
| 1294 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1295 // fall through | |
| 1296 case Bytecodes::_fneg : | |
| 1297 current_frame.pop_stack( | |
| 1298 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1299 current_frame.push_stack( | |
| 1300 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1301 no_control_flow = false; break; | |
| 1302 case Bytecodes::_dadd : | |
| 1303 case Bytecodes::_dsub : | |
| 1304 case Bytecodes::_dmul : | |
| 1305 case Bytecodes::_ddiv : | |
| 1306 case Bytecodes::_drem : | |
| 1307 current_frame.pop_stack_2( | |
| 1308 VerificationType::double2_type(), | |
| 1309 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1310 // fall through | |
| 1311 case Bytecodes::_dneg : | |
| 1312 current_frame.pop_stack_2( | |
| 1313 VerificationType::double2_type(), | |
| 1314 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1315 current_frame.push_stack_2( | |
| 1316 VerificationType::double_type(), | |
| 1317 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1318 no_control_flow = false; break; | |
| 1319 case Bytecodes::_iinc : | |
| 1320 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 1321 no_control_flow = false; break; | |
| 1322 case Bytecodes::_i2l : | |
| 1323 type = current_frame.pop_stack( | |
| 1324 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1325 current_frame.push_stack_2( | |
| 1326 VerificationType::long_type(), | |
| 1327 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1328 no_control_flow = false; break; | |
| 1329 case Bytecodes::_l2i : | |
| 1330 current_frame.pop_stack_2( | |
| 1331 VerificationType::long2_type(), | |
| 1332 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1333 current_frame.push_stack( | |
| 1334 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1335 no_control_flow = false; break; | |
| 1336 case Bytecodes::_i2f : | |
| 1337 current_frame.pop_stack( | |
| 1338 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1339 current_frame.push_stack( | |
| 1340 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1341 no_control_flow = false; break; | |
| 1342 case Bytecodes::_i2d : | |
| 1343 current_frame.pop_stack( | |
| 1344 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1345 current_frame.push_stack_2( | |
| 1346 VerificationType::double_type(), | |
| 1347 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1348 no_control_flow = false; break; | |
| 1349 case Bytecodes::_l2f : | |
| 1350 current_frame.pop_stack_2( | |
| 1351 VerificationType::long2_type(), | |
| 1352 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1353 current_frame.push_stack( | |
| 1354 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1355 no_control_flow = false; break; | |
| 1356 case Bytecodes::_l2d : | |
| 1357 current_frame.pop_stack_2( | |
| 1358 VerificationType::long2_type(), | |
| 1359 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1360 current_frame.push_stack_2( | |
| 1361 VerificationType::double_type(), | |
| 1362 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1363 no_control_flow = false; break; | |
| 1364 case Bytecodes::_f2i : | |
| 1365 current_frame.pop_stack( | |
| 1366 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1367 current_frame.push_stack( | |
| 1368 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1369 no_control_flow = false; break; | |
| 1370 case Bytecodes::_f2l : | |
| 1371 current_frame.pop_stack( | |
| 1372 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1373 current_frame.push_stack_2( | |
| 1374 VerificationType::long_type(), | |
| 1375 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1376 no_control_flow = false; break; | |
| 1377 case Bytecodes::_f2d : | |
| 1378 current_frame.pop_stack( | |
| 1379 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1380 current_frame.push_stack_2( | |
| 1381 VerificationType::double_type(), | |
| 1382 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1383 no_control_flow = false; break; | |
| 1384 case Bytecodes::_d2i : | |
| 1385 current_frame.pop_stack_2( | |
| 1386 VerificationType::double2_type(), | |
| 1387 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1388 current_frame.push_stack( | |
| 1389 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1390 no_control_flow = false; break; | |
| 1391 case Bytecodes::_d2l : | |
| 1392 current_frame.pop_stack_2( | |
| 1393 VerificationType::double2_type(), | |
| 1394 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1395 current_frame.push_stack_2( | |
| 1396 VerificationType::long_type(), | |
| 1397 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1398 no_control_flow = false; break; | |
| 1399 case Bytecodes::_d2f : | |
| 1400 current_frame.pop_stack_2( | |
| 1401 VerificationType::double2_type(), | |
| 1402 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1403 current_frame.push_stack( | |
| 1404 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1405 no_control_flow = false; break; | |
| 1406 case Bytecodes::_i2b : | |
| 1407 case Bytecodes::_i2c : | |
| 1408 case Bytecodes::_i2s : | |
| 1409 current_frame.pop_stack( | |
| 1410 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1411 current_frame.push_stack( | |
| 1412 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1413 no_control_flow = false; break; | |
| 1414 case Bytecodes::_lcmp : | |
| 1415 current_frame.pop_stack_2( | |
| 1416 VerificationType::long2_type(), | |
| 1417 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1418 current_frame.pop_stack_2( | |
| 1419 VerificationType::long2_type(), | |
| 1420 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1421 current_frame.push_stack( | |
| 1422 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1423 no_control_flow = false; break; | |
| 1424 case Bytecodes::_fcmpl : | |
| 1425 case Bytecodes::_fcmpg : | |
| 1426 current_frame.pop_stack( | |
| 1427 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1428 current_frame.pop_stack( | |
| 1429 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1430 current_frame.push_stack( | |
| 1431 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1432 no_control_flow = false; break; | |
| 1433 case Bytecodes::_dcmpl : | |
| 1434 case Bytecodes::_dcmpg : | |
| 1435 current_frame.pop_stack_2( | |
| 1436 VerificationType::double2_type(), | |
| 1437 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1438 current_frame.pop_stack_2( | |
| 1439 VerificationType::double2_type(), | |
| 1440 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1441 current_frame.push_stack( | |
| 1442 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1443 no_control_flow = false; break; | |
| 1444 case Bytecodes::_if_icmpeq: | |
| 1445 case Bytecodes::_if_icmpne: | |
| 1446 case Bytecodes::_if_icmplt: | |
| 1447 case Bytecodes::_if_icmpge: | |
| 1448 case Bytecodes::_if_icmpgt: | |
| 1449 case Bytecodes::_if_icmple: | |
| 1450 current_frame.pop_stack( | |
| 1451 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1452 // fall through | |
| 1453 case Bytecodes::_ifeq: | |
| 1454 case Bytecodes::_ifne: | |
| 1455 case Bytecodes::_iflt: | |
| 1456 case Bytecodes::_ifge: | |
| 1457 case Bytecodes::_ifgt: | |
| 1458 case Bytecodes::_ifle: | |
| 1459 current_frame.pop_stack( | |
| 1460 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1461 target = bcs.dest(); | |
| 1462 stackmap_table.check_jump_target( | |
| 1463 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1464 no_control_flow = false; break; | |
| 1465 case Bytecodes::_if_acmpeq : | |
| 1466 case Bytecodes::_if_acmpne : | |
| 1467 current_frame.pop_stack( | |
| 1468 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1469 // fall through | |
| 1470 case Bytecodes::_ifnull : | |
| 1471 case Bytecodes::_ifnonnull : | |
| 1472 current_frame.pop_stack( | |
| 1473 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1474 target = bcs.dest(); | |
| 1475 stackmap_table.check_jump_target | |
| 1476 (¤t_frame, target, CHECK_VERIFY(this)); | |
| 1477 no_control_flow = false; break; | |
| 1478 case Bytecodes::_goto : | |
| 1479 target = bcs.dest(); | |
| 1480 stackmap_table.check_jump_target( | |
| 1481 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1482 no_control_flow = true; break; | |
| 1483 case Bytecodes::_goto_w : | |
| 1484 target = bcs.dest_w(); | |
| 1485 stackmap_table.check_jump_target( | |
| 1486 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1487 no_control_flow = true; break; | |
| 1488 case Bytecodes::_tableswitch : | |
| 1489 case Bytecodes::_lookupswitch : | |
| 1490 verify_switch( | |
| 1491 &bcs, code_length, code_data, ¤t_frame, | |
| 1492 &stackmap_table, CHECK_VERIFY(this)); | |
| 1493 no_control_flow = true; break; | |
| 1494 case Bytecodes::_ireturn : | |
| 1495 type = current_frame.pop_stack( | |
| 1496 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 6605 | 1497 verify_return_value(return_type, type, bci, |
| 1498 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1499 no_control_flow = true; break; |
| 1500 case Bytecodes::_lreturn : | |
| 1501 type2 = current_frame.pop_stack( | |
| 1502 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1503 type = current_frame.pop_stack( | |
| 1504 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 6605 | 1505 verify_return_value(return_type, type, bci, |
| 1506 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1507 no_control_flow = true; break; |
| 1508 case Bytecodes::_freturn : | |
| 1509 type = current_frame.pop_stack( | |
| 1510 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 6605 | 1511 verify_return_value(return_type, type, bci, |
| 1512 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1513 no_control_flow = true; break; |
| 1514 case Bytecodes::_dreturn : | |
| 1515 type2 = current_frame.pop_stack( | |
| 1516 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1517 type = current_frame.pop_stack( | |
| 1518 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 6605 | 1519 verify_return_value(return_type, type, bci, |
| 1520 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1521 no_control_flow = true; break; |
| 1522 case Bytecodes::_areturn : | |
| 1523 type = current_frame.pop_stack( | |
| 1524 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 6605 | 1525 verify_return_value(return_type, type, bci, |
| 1526 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1527 no_control_flow = true; break; |
| 1528 case Bytecodes::_return : | |
| 1529 if (return_type != VerificationType::bogus_type()) { | |
| 6605 | 1530 verify_error(ErrorContext::bad_code(bci), |
| 1531 "Method expects a return value"); | |
| 0 | 1532 return; |
| 1533 } | |
| 1534 // Make sure "this" has been initialized if current method is an | |
| 1535 // <init> | |
| 1536 if (_method->name() == vmSymbols::object_initializer_name() && | |
| 1537 current_frame.flag_this_uninit()) { | |
| 6605 | 1538 verify_error(ErrorContext::bad_code(bci), |
| 1539 "Constructor must call super() or this() " | |
| 1540 "before return"); | |
| 0 | 1541 return; |
| 1542 } | |
| 1543 no_control_flow = true; break; | |
| 1544 case Bytecodes::_getstatic : | |
| 1545 case Bytecodes::_putstatic : | |
| 1546 case Bytecodes::_getfield : | |
| 1547 case Bytecodes::_putfield : | |
| 1548 verify_field_instructions( | |
| 1549 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
| 1550 no_control_flow = false; break; | |
| 1551 case Bytecodes::_invokevirtual : | |
| 1552 case Bytecodes::_invokespecial : | |
| 1553 case Bytecodes::_invokestatic : | |
| 1554 verify_invoke_instructions( | |
| 1555 &bcs, code_length, ¤t_frame, | |
| 1556 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1557 no_control_flow = false; break; | |
| 1558 case Bytecodes::_invokeinterface : | |
|
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be93aad57795
6655646: dynamic languages need dynamically linked call sites
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parents:
431
diff
changeset
|
1559 case Bytecodes::_invokedynamic : |
| 0 | 1560 verify_invoke_instructions( |
| 1561 &bcs, code_length, ¤t_frame, | |
| 1562 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1563 no_control_flow = false; break; | |
| 1564 case Bytecodes::_new : | |
| 1565 { | |
| 1565 | 1566 index = bcs.get_index_u2(); |
| 6605 | 1567 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1568 VerificationType new_class_type = |
| 1569 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1570 if (!new_class_type.is_object()) { | |
| 6605 | 1571 verify_error(ErrorContext::bad_type(bci, |
| 1572 TypeOrigin::cp(index, new_class_type)), | |
| 1573 "Illegal new instruction"); | |
| 0 | 1574 return; |
| 1575 } | |
| 1576 type = VerificationType::uninitialized_type(bci); | |
| 1577 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1578 no_control_flow = false; break; | |
| 1579 } | |
| 1580 case Bytecodes::_newarray : | |
| 1581 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
| 1582 current_frame.pop_stack( | |
| 1583 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1584 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1585 no_control_flow = false; break; | |
| 1586 case Bytecodes::_anewarray : | |
| 1587 verify_anewarray( | |
| 6605 | 1588 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
| 0 | 1589 no_control_flow = false; break; |
| 1590 case Bytecodes::_arraylength : | |
| 1591 type = current_frame.pop_stack( | |
| 1592 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
|
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6692246: Regression : JDK 6u4 b01 fails two JCK tests when fallback is switched off
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0
diff
changeset
|
1593 if (!(type.is_null() || type.is_array())) { |
| 6605 | 1594 verify_error(ErrorContext::bad_type( |
| 1595 bci, current_frame.stack_top_ctx()), | |
| 1596 bad_type_msg, "arraylength"); | |
| 0 | 1597 } |
| 1598 current_frame.push_stack( | |
| 1599 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1600 no_control_flow = false; break; | |
| 1601 case Bytecodes::_checkcast : | |
| 1602 { | |
| 1565 | 1603 index = bcs.get_index_u2(); |
| 6605 | 1604 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
kamg
parents:
1678
diff
changeset
|
1605 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1606 VerificationType klass_type = cp_index_to_type( |
| 1607 index, cp, CHECK_VERIFY(this)); | |
| 1608 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
| 1609 no_control_flow = false; break; | |
| 1610 } | |
| 1611 case Bytecodes::_instanceof : { | |
| 1565 | 1612 index = bcs.get_index_u2(); |
| 6605 | 1613 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
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|
1614 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1615 current_frame.push_stack( |
| 1616 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1617 no_control_flow = false; break; | |
| 1618 } | |
| 1619 case Bytecodes::_monitorenter : | |
| 1620 case Bytecodes::_monitorexit : | |
| 1621 current_frame.pop_stack( | |
| 1622 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1623 no_control_flow = false; break; | |
| 1624 case Bytecodes::_multianewarray : | |
| 1625 { | |
| 1565 | 1626 index = bcs.get_index_u2(); |
| 0 | 1627 u2 dim = *(bcs.bcp()+3); |
| 6605 | 1628 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1629 VerificationType new_array_type = |
| 1630 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1631 if (!new_array_type.is_array()) { | |
| 6605 | 1632 verify_error(ErrorContext::bad_type(bci, |
| 1633 TypeOrigin::cp(index, new_array_type)), | |
| 1634 "Illegal constant pool index in multianewarray instruction"); | |
| 0 | 1635 return; |
| 1636 } | |
| 1637 if (dim < 1 || new_array_type.dimensions() < dim) { | |
| 6605 | 1638 verify_error(ErrorContext::bad_code(bci), |
| 1639 "Illegal dimension in multianewarray instruction: %d", dim); | |
| 0 | 1640 return; |
| 1641 } | |
| 1642 for (int i = 0; i < dim; i++) { | |
| 1643 current_frame.pop_stack( | |
| 1644 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1645 } | |
| 1646 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 1647 no_control_flow = false; break; | |
| 1648 } | |
| 1649 case Bytecodes::_athrow : | |
| 1650 type = VerificationType::reference_type( | |
| 1651 vmSymbols::java_lang_Throwable()); | |
| 1652 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
| 1653 no_control_flow = true; break; | |
| 1654 default: | |
| 1655 // We only need to check the valid bytecodes in class file. | |
| 1656 // And jsr and ret are not in the new class file format in JDK1.5. | |
| 6605 | 1657 verify_error(ErrorContext::bad_code(bci), |
| 1658 "Bad instruction: %02x", opcode); | |
| 0 | 1659 no_control_flow = false; |
| 1660 return; | |
| 1661 } // end switch | |
| 1662 } // end Merge with the next instruction | |
| 1663 | |
| 1664 // Look for possible jump target in exception handlers and see if it | |
| 1665 // matches current_frame | |
| 1666 if (bci >= ex_min && bci < ex_max) { | |
| 1667 verify_exception_handler_targets( | |
| 1668 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
| 1669 } | |
| 1670 } // end while | |
| 1671 | |
| 1672 // Make sure that control flow does not fall through end of the method | |
| 1673 if (!no_control_flow) { | |
| 6605 | 1674 verify_error(ErrorContext::bad_code(code_length), |
| 1675 "Control flow falls through code end"); | |
| 0 | 1676 return; |
| 1677 } | |
| 1678 } | |
| 1679 | |
| 1680 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { | |
| 1681 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
| 1682 memset(code_data, 0, sizeof(char) * code_length); | |
| 1683 RawBytecodeStream bcs(m); | |
| 1684 | |
| 1685 while (!bcs.is_last_bytecode()) { | |
| 1686 if (bcs.raw_next() != Bytecodes::_illegal) { | |
| 1687 int bci = bcs.bci(); | |
| 1565 | 1688 if (bcs.raw_code() == Bytecodes::_new) { |
| 0 | 1689 code_data[bci] = NEW_OFFSET; |
| 1690 } else { | |
| 1691 code_data[bci] = BYTECODE_OFFSET; | |
| 1692 } | |
| 1693 } else { | |
| 6605 | 1694 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
| 0 | 1695 return NULL; |
| 1696 } | |
| 1697 } | |
| 1698 | |
| 1699 return code_data; | |
| 1700 } | |
| 1701 | |
| 1702 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
|
6213
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jiangli
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6118
diff
changeset
|
1703 ExceptionTable exhandlers(_method()); |
|
8150fa46d2ed
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1704 int exlength = exhandlers.length(); |
| 0 | 1705 constantPoolHandle cp (THREAD, _method->constants()); |
| 1706 | |
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1707 for(int i = 0; i < exlength; i++) { |
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1708 //reacquire the table in case a GC happened |
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1709 ExceptionTable exhandlers(_method()); |
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1710 u2 start_pc = exhandlers.start_pc(i); |
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1711 u2 end_pc = exhandlers.end_pc(i); |
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1712 u2 handler_pc = exhandlers.handler_pc(i); |
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1713 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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1714 class_format_error("Illegal exception table start_pc %d", start_pc); |
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1715 return; |
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1716 } |
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1717 if (end_pc != code_length) { // special case: end_pc == code_length |
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1718 if (end_pc > code_length || code_data[end_pc] == 0) { |
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1719 class_format_error("Illegal exception table end_pc %d", end_pc); |
| 0 | 1720 return; |
| 1721 } | |
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1722 } |
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1723 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
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1724 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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1725 return; |
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1726 } |
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1727 int catch_type_index = exhandlers.catch_type_index(i); |
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1728 if (catch_type_index != 0) { |
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1729 VerificationType catch_type = cp_index_to_type( |
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1730 catch_type_index, cp, CHECK_VERIFY(this)); |
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1731 VerificationType throwable = |
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1732 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1733 bool is_subclass = throwable.is_assignable_from( |
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1734 catch_type, this, CHECK_VERIFY(this)); |
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1735 if (!is_subclass) { |
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1736 // 4286534: should throw VerifyError according to recent spec change |
| 6605 | 1737 verify_error(ErrorContext::bad_type(handler_pc, |
| 1738 TypeOrigin::cp(catch_type_index, catch_type), | |
| 1739 TypeOrigin::implicit(throwable)), | |
| 1740 "Catch type is not a subclass " | |
| 1741 "of Throwable in exception handler %d", handler_pc); | |
| 0 | 1742 return; |
| 1743 } | |
| 1744 } | |
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1745 if (start_pc < min) min = start_pc; |
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1746 if (end_pc > max) max = end_pc; |
| 0 | 1747 } |
| 1748 } | |
| 1749 | |
| 1750 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
| 1751 int localvariable_table_length = _method()->localvariable_table_length(); | |
| 1752 if (localvariable_table_length > 0) { | |
| 1753 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
| 1754 for (int i = 0; i < localvariable_table_length; i++) { | |
| 1755 u2 start_bci = table[i].start_bci; | |
| 1756 u2 length = table[i].length; | |
| 1757 | |
| 1758 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
| 1759 class_format_error( | |
| 1760 "Illegal local variable table start_pc %d", start_bci); | |
| 1761 return; | |
| 1762 } | |
| 1763 u4 end_bci = (u4)(start_bci + length); | |
| 1764 if (end_bci != code_length) { | |
| 1765 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
| 1766 class_format_error( "Illegal local variable table length %d", length); | |
| 1767 return; | |
| 1768 } | |
| 1769 } | |
| 1770 } | |
| 1771 } | |
| 1772 } | |
| 1773 | |
| 1774 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
| 1775 StackMapFrame* current_frame, | |
| 1776 StackMapTable* stackmap_table, | |
| 1777 bool no_control_flow, TRAPS) { | |
| 1778 if (stackmap_index < stackmap_table->get_frame_count()) { | |
| 1779 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
| 1780 if (no_control_flow && this_offset > bci) { | |
| 6605 | 1781 verify_error(ErrorContext::missing_stackmap(bci), |
| 1782 "Expecting a stack map frame"); | |
| 0 | 1783 return 0; |
| 1784 } | |
| 1785 if (this_offset == bci) { | |
| 6605 | 1786 ErrorContext ctx; |
| 0 | 1787 // See if current stack map can be assigned to the frame in table. |
| 1788 // current_frame is the stackmap frame got from the last instruction. | |
| 1789 // If matched, current_frame will be updated by this method. | |
| 6605 | 1790 bool matches = stackmap_table->match_stackmap( |
| 0 | 1791 current_frame, this_offset, stackmap_index, |
| 6605 | 1792 !no_control_flow, true, &ctx, CHECK_VERIFY_(this, 0)); |
| 1793 if (!matches) { | |
| 0 | 1794 // report type error |
| 6605 | 1795 verify_error(ctx, "Instruction type does not match stack map"); |
| 0 | 1796 return 0; |
| 1797 } | |
| 1798 stackmap_index++; | |
| 1799 } else if (this_offset < bci) { | |
| 1800 // current_offset should have met this_offset. | |
| 1801 class_format_error("Bad stack map offset %d", this_offset); | |
| 1802 return 0; | |
| 1803 } | |
| 1804 } else if (no_control_flow) { | |
| 6605 | 1805 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
| 0 | 1806 return 0; |
| 1807 } | |
| 1808 return stackmap_index; | |
| 1809 } | |
| 1810 | |
| 1811 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 1812 StackMapTable* stackmap_table, TRAPS) { | |
| 1813 constantPoolHandle cp (THREAD, _method->constants()); | |
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1814 ExceptionTable exhandlers(_method()); |
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1815 int exlength = exhandlers.length(); |
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1816 for(int i = 0; i < exlength; i++) { |
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1817 //reacquire the table in case a GC happened |
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1818 ExceptionTable exhandlers(_method()); |
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1819 u2 start_pc = exhandlers.start_pc(i); |
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1820 u2 end_pc = exhandlers.end_pc(i); |
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1821 u2 handler_pc = exhandlers.handler_pc(i); |
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1822 int catch_type_index = exhandlers.catch_type_index(i); |
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1823 if(bci >= start_pc && bci < end_pc) { |
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1824 u1 flags = current_frame->flags(); |
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1825 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1826 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1827 if (catch_type_index != 0) { |
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1828 // We know that this index refers to a subclass of Throwable |
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1829 VerificationType catch_type = cp_index_to_type( |
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1830 catch_type_index, cp, CHECK_VERIFY(this)); |
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1831 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1832 } else { |
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1833 VerificationType throwable = |
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1834 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1835 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1836 } |
| 6605 | 1837 ErrorContext ctx; |
| 1838 bool matches = stackmap_table->match_stackmap( | |
| 1839 new_frame, handler_pc, true, false, &ctx, CHECK_VERIFY(this)); | |
| 1840 if (!matches) { | |
| 1841 verify_error(ctx, "Stack map does not match the one at " | |
| 1842 "exception handler %d", handler_pc); | |
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1843 return; |
| 0 | 1844 } |
| 1845 } | |
| 1846 } | |
| 1847 } | |
| 1848 | |
| 6605 | 1849 void ClassVerifier::verify_cp_index( |
| 1850 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
| 0 | 1851 int nconstants = cp->length(); |
| 1852 if ((index <= 0) || (index >= nconstants)) { | |
| 6605 | 1853 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1854 "Illegal constant pool index %d in class %s", | |
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1855 index, cp->pool_holder()->external_name()); |
| 0 | 1856 return; |
| 1857 } | |
| 1858 } | |
| 1859 | |
| 1860 void ClassVerifier::verify_cp_type( | |
| 6605 | 1861 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
| 0 | 1862 |
| 1863 // In some situations, bytecode rewriting may occur while we're verifying. | |
| 1864 // In this case, a constant pool cache exists and some indices refer to that | |
| 1570 | 1865 // instead. Be sure we don't pick up such indices by accident. |
| 1866 // We must check was_recursively_verified() before we get here. | |
| 1867 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
| 0 | 1868 |
| 6605 | 1869 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
| 0 | 1870 unsigned int tag = cp->tag_at(index).value(); |
| 1871 if ((types & (1 << tag)) == 0) { | |
| 6605 | 1872 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 0 | 1873 "Illegal type at constant pool entry %d in class %s", |
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1874 index, cp->pool_holder()->external_name()); |
| 0 | 1875 return; |
| 1876 } | |
| 1877 } | |
| 1878 | |
| 1879 void ClassVerifier::verify_cp_class_type( | |
| 6605 | 1880 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
| 1881 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1882 constantTag tag = cp->tag_at(index); |
| 1883 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 6605 | 1884 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1885 "Illegal type at constant pool entry %d in class %s", | |
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1886 index, cp->pool_holder()->external_name()); |
| 0 | 1887 return; |
| 1888 } | |
| 1889 } | |
| 1890 | |
| 6605 | 1891 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
| 1892 stringStream ss; | |
| 0 | 1893 |
| 6605 | 1894 ctx.reset_frames(); |
| 0 | 1895 _exception_type = vmSymbols::java_lang_VerifyError(); |
| 6605 | 1896 _error_context = ctx; |
| 0 | 1897 va_list va; |
| 6605 | 1898 va_start(va, msg); |
| 1899 ss.vprint(msg, va); | |
| 0 | 1900 va_end(va); |
| 6605 | 1901 _message = ss.as_string(); |
| 1902 #ifdef ASSERT | |
| 1903 ResourceMark rm; | |
| 1904 const char* exception_name = _exception_type->as_C_string(); | |
| 1905 Exceptions::debug_check_abort(exception_name, NULL); | |
| 1906 #endif // ndef ASSERT | |
| 0 | 1907 } |
| 1908 | |
| 1909 void ClassVerifier::class_format_error(const char* msg, ...) { | |
| 6605 | 1910 stringStream ss; |
| 0 | 1911 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
| 1912 va_list va; | |
| 1913 va_start(va, msg); | |
| 6605 | 1914 ss.vprint(msg, va); |
| 0 | 1915 va_end(va); |
| 6605 | 1916 if (!_method.is_null()) { |
| 1917 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
| 1918 } | |
| 1919 _message = ss.as_string(); | |
| 0 | 1920 } |
| 1921 | |
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1922 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
| 0 | 1923 // Get current loader and protection domain first. |
| 1924 oop loader = current_class()->class_loader(); | |
| 1925 oop protection_domain = current_class()->protection_domain(); | |
| 1926 | |
| 1927 return SystemDictionary::resolve_or_fail( | |
| 1928 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
| 1929 true, CHECK_NULL); | |
| 1930 } | |
| 1931 | |
| 1932 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1933 Klass* target_class, |
|
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1934 Symbol* field_name, |
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1935 Symbol* field_sig, |
| 0 | 1936 bool is_method) { |
| 1937 No_Safepoint_Verifier nosafepoint; | |
| 1938 | |
| 1939 // If target class isn't a super class of this class, we don't worry about this case | |
| 1940 if (!this_class->is_subclass_of(target_class)) { | |
| 1941 return false; | |
| 1942 } | |
| 1943 // Check if the specified method or field is protected | |
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1944 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
| 0 | 1945 fieldDescriptor fd; |
| 1946 if (is_method) { | |
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1947 Method* m = target_instance->uncached_lookup_method(field_name, field_sig); |
| 0 | 1948 if (m != NULL && m->is_protected()) { |
| 1949 if (!this_class->is_same_class_package(m->method_holder())) { | |
| 1950 return true; | |
| 1951 } | |
| 1952 } | |
| 1953 } else { | |
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1954 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
| 6605 | 1955 if (member_klass != NULL && fd.is_protected()) { |
| 0 | 1956 if (!this_class->is_same_class_package(member_klass)) { |
| 1957 return true; | |
| 1958 } | |
| 1959 } | |
| 1960 } | |
| 1961 return false; | |
| 1962 } | |
| 1963 | |
| 1964 void ClassVerifier::verify_ldc( | |
| 6605 | 1965 int opcode, u2 index, StackMapFrame* current_frame, |
| 1966 constantPoolHandle cp, u2 bci, TRAPS) { | |
| 1967 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1968 constantTag tag = cp->tag_at(index); |
| 1969 unsigned int types; | |
| 1970 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
|
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1971 if (!tag.is_unresolved_klass()) { |
| 0 | 1972 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
| 1602 | 1973 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
| 1974 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
| 1975 // Note: The class file parser already verified the legality of | |
| 1976 // MethodHandle and MethodType constants. | |
| 6605 | 1977 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1978 } |
| 1979 } else { | |
| 1980 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
| 1981 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
| 6605 | 1982 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1983 } |
|
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1984 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
|
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1985 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1986 } else if (tag.is_string()) { |
| 0 | 1987 current_frame->push_stack( |
| 1988 VerificationType::reference_type( | |
| 1989 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
| 1990 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1991 current_frame->push_stack( | |
| 1992 VerificationType::reference_type( | |
| 1993 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
| 1994 } else if (tag.is_int()) { | |
| 1995 current_frame->push_stack( | |
| 1996 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1997 } else if (tag.is_float()) { | |
| 1998 current_frame->push_stack( | |
| 1999 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2000 } else if (tag.is_double()) { | |
| 2001 current_frame->push_stack_2( | |
| 2002 VerificationType::double_type(), | |
| 2003 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2004 } else if (tag.is_long()) { | |
| 2005 current_frame->push_stack_2( | |
| 2006 VerificationType::long_type(), | |
| 2007 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1602 | 2008 } else if (tag.is_method_handle()) { |
| 2009 current_frame->push_stack( | |
| 2010 VerificationType::reference_type( | |
| 2460 | 2011 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
| 1602 | 2012 } else if (tag.is_method_type()) { |
| 2013 current_frame->push_stack( | |
| 2014 VerificationType::reference_type( | |
| 2460 | 2015 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
| 0 | 2016 } else { |
| 6605 | 2017 /* Unreachable? verify_cp_type has already validated the cp type. */ |
| 2018 verify_error( | |
| 2019 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
| 0 | 2020 return; |
| 2021 } | |
| 2022 } | |
| 2023 | |
| 2024 void ClassVerifier::verify_switch( | |
| 2025 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 2026 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
| 2027 int bci = bcs->bci(); | |
| 2028 address bcp = bcs->bcp(); | |
| 2029 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
| 2030 | |
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2031 if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
|
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2032 // 4639449 & 4647081: padding bytes must be 0 |
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2033 u2 padding_offset = 1; |
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2034 while ((bcp + padding_offset) < aligned_bcp) { |
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2035 if(*(bcp + padding_offset) != 0) { |
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2036 verify_error(ErrorContext::bad_code(bci), |
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2037 "Nonzero padding byte in lookswitch or tableswitch"); |
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2038 return; |
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2039 } |
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2040 padding_offset++; |
| 0 | 2041 } |
| 2042 } | |
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2043 |
| 0 | 2044 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
| 2045 int keys, delta; | |
| 2046 current_frame->pop_stack( | |
| 2047 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1565 | 2048 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
| 0 | 2049 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
| 2050 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
| 2051 if (low > high) { | |
| 6605 | 2052 verify_error(ErrorContext::bad_code(bci), |
| 2053 "low must be less than or equal to high in tableswitch"); | |
| 0 | 2054 return; |
| 2055 } | |
| 2056 keys = high - low + 1; | |
| 2057 if (keys < 0) { | |
| 6605 | 2058 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
| 0 | 2059 return; |
| 2060 } | |
| 2061 delta = 1; | |
| 2062 } else { | |
| 2063 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
| 2064 if (keys < 0) { | |
| 6605 | 2065 verify_error(ErrorContext::bad_code(bci), |
| 2066 "number of keys in lookupswitch less than 0"); | |
| 0 | 2067 return; |
| 2068 } | |
| 2069 delta = 2; | |
| 2070 // Make sure that the lookupswitch items are sorted | |
| 2071 for (int i = 0; i < (keys - 1); i++) { | |
| 2072 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
| 2073 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
| 2074 if (this_key >= next_key) { | |
| 6605 | 2075 verify_error(ErrorContext::bad_code(bci), |
| 2076 "Bad lookupswitch instruction"); | |
| 0 | 2077 return; |
| 2078 } | |
| 2079 } | |
| 2080 } | |
| 2081 int target = bci + default_offset; | |
| 2082 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
| 2083 for (int i = 0; i < keys; i++) { | |
| 6118 | 2084 // Because check_jump_target() may safepoint, the bytecode could have |
| 2085 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
| 2086 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
| 0 | 2087 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
| 2088 stackmap_table->check_jump_target( | |
| 2089 current_frame, target, CHECK_VERIFY(this)); | |
| 2090 } | |
| 6118 | 2091 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
| 0 | 2092 } |
| 2093 | |
| 2094 bool ClassVerifier::name_in_supers( | |
|
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2095 Symbol* ref_name, instanceKlassHandle current) { |
|
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2096 Klass* super = current->super(); |
| 0 | 2097 while (super != NULL) { |
|
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2098 if (super->name() == ref_name) { |
| 0 | 2099 return true; |
| 2100 } | |
|
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|
2101 super = super->super(); |
| 0 | 2102 } |
| 2103 return false; | |
| 2104 } | |
| 2105 | |
| 2106 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
| 2107 StackMapFrame* current_frame, | |
| 2108 constantPoolHandle cp, | |
| 2109 TRAPS) { | |
| 1565 | 2110 u2 index = bcs->get_index_u2(); |
| 6605 | 2111 verify_cp_type(bcs->bci(), index, cp, |
| 2112 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
| 0 | 2113 |
| 2114 // Get field name and signature | |
|
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|
2115 Symbol* field_name = cp->name_ref_at(index); |
|
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|
2116 Symbol* field_sig = cp->signature_ref_at(index); |
| 0 | 2117 |
| 2118 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
| 2119 class_format_error( | |
| 2120 "Invalid signature for field in class %s referenced " | |
| 2121 "from constant pool index %d", _klass->external_name(), index); | |
| 2122 return; | |
| 2123 } | |
| 2124 | |
| 2125 // Get referenced class type | |
| 2126 VerificationType ref_class_type = cp_ref_index_to_type( | |
| 2127 index, cp, CHECK_VERIFY(this)); | |
| 2128 if (!ref_class_type.is_object()) { | |
| 6605 | 2129 /* Unreachable? Class file parser verifies Fieldref contents */ |
| 2130 verify_error(ErrorContext::bad_type(bcs->bci(), | |
| 2131 TypeOrigin::cp(index, ref_class_type)), | |
| 2132 "Expecting reference to class in class %s at constant pool index %d", | |
| 2133 _klass->external_name(), index); | |
| 0 | 2134 return; |
| 2135 } | |
| 2136 VerificationType target_class_type = ref_class_type; | |
| 2137 | |
| 2138 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2139 "buffer type must match VerificationType size"); | |
| 2140 uintptr_t field_type_buffer[2]; | |
| 2141 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
| 2142 // If we make a VerificationType[2] array directly, the compiler calls | |
| 2143 // to the c-runtime library to do the allocation instead of just | |
| 2144 // stack allocating it. Plus it would run constructors. This shows up | |
| 2145 // in performance profiles. | |
| 2146 | |
| 2147 SignatureStream sig_stream(field_sig, false); | |
| 2148 VerificationType stack_object_type; | |
| 2149 int n = change_sig_to_verificationType( | |
| 2150 &sig_stream, field_type, CHECK_VERIFY(this)); | |
| 2151 u2 bci = bcs->bci(); | |
| 2152 bool is_assignable; | |
| 1565 | 2153 switch (bcs->raw_code()) { |
| 0 | 2154 case Bytecodes::_getstatic: { |
| 2155 for (int i = 0; i < n; i++) { | |
| 2156 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2157 } | |
| 2158 break; | |
| 2159 } | |
| 2160 case Bytecodes::_putstatic: { | |
| 2161 for (int i = n - 1; i >= 0; i--) { | |
| 2162 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2163 } | |
| 2164 break; | |
| 2165 } | |
| 2166 case Bytecodes::_getfield: { | |
| 2167 stack_object_type = current_frame->pop_stack( | |
| 2168 target_class_type, CHECK_VERIFY(this)); | |
| 2169 for (int i = 0; i < n; i++) { | |
| 2170 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2171 } | |
| 2172 goto check_protected; | |
| 2173 } | |
| 2174 case Bytecodes::_putfield: { | |
| 2175 for (int i = n - 1; i >= 0; i--) { | |
| 2176 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2177 } | |
| 2178 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
| 2179 | |
| 2180 // The JVMS 2nd edition allows field initialization before the superclass | |
| 2181 // initializer, if the field is defined within the current class. | |
| 2182 fieldDescriptor fd; | |
| 2183 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
| 2184 target_class_type.equals(current_type()) && | |
|
2177
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diff
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|
2185 _klass->find_local_field(field_name, field_sig, &fd)) { |
| 0 | 2186 stack_object_type = current_type(); |
| 2187 } | |
| 2188 is_assignable = target_class_type.is_assignable_from( | |
|
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diff
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|
2189 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2190 if (!is_assignable) { |
| 6605 | 2191 verify_error(ErrorContext::bad_type(bci, |
| 2192 current_frame->stack_top_ctx(), | |
| 2193 TypeOrigin::cp(index, target_class_type)), | |
| 2194 "Bad type on operand stack in putfield"); | |
| 0 | 2195 return; |
| 2196 } | |
| 2197 } | |
| 2198 check_protected: { | |
| 2199 if (_this_type == stack_object_type) | |
| 2200 break; // stack_object_type must be assignable to _current_class_type | |
|
2177
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diff
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|
2201 Symbol* ref_class_name = |
|
3582bf76420e
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1980
diff
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|
2202 cp->klass_name_at(cp->klass_ref_index_at(index)); |
|
3582bf76420e
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1980
diff
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|
2203 if (!name_in_supers(ref_class_name, current_class())) |
| 0 | 2204 // stack_object_type must be assignable to _current_class_type since: |
| 2205 // 1. stack_object_type must be assignable to ref_class. | |
| 2206 // 2. ref_class must be _current_class or a subclass of it. It can't | |
| 2207 // be a superclass of it. See revised JVMS 5.4.4. | |
| 2208 break; | |
| 2209 | |
|
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|
2210 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
|
2177
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diff
changeset
|
2211 if (is_protected_access(current_class(), ref_class_oop, field_name, |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2212 field_sig, false)) { |
| 0 | 2213 // It's protected access, check if stack object is assignable to |
| 2214 // current class. | |
| 2215 is_assignable = current_type().is_assignable_from( | |
|
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|
2216 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2217 if (!is_assignable) { |
| 6605 | 2218 verify_error(ErrorContext::bad_type(bci, |
| 2219 current_frame->stack_top_ctx(), | |
| 2220 TypeOrigin::implicit(current_type())), | |
| 2221 "Bad access to protected data in getfield"); | |
| 0 | 2222 return; |
| 2223 } | |
| 2224 } | |
| 2225 break; | |
| 2226 } | |
| 2227 default: ShouldNotReachHere(); | |
| 2228 } | |
| 2229 } | |
| 2230 | |
| 2231 void ClassVerifier::verify_invoke_init( | |
| 6605 | 2232 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
| 0 | 2233 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
| 2234 constantPoolHandle cp, TRAPS) { | |
| 2235 u2 bci = bcs->bci(); | |
| 2236 VerificationType type = current_frame->pop_stack( | |
| 2237 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2238 if (type == VerificationType::uninitialized_this_type()) { | |
| 6155 | 2239 // The method must be an <init> method of this class or its superclass |
|
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|
2240 Klass* superk = current_class()->super(); |
| 1677 | 2241 if (ref_class_type.name() != current_class()->name() && |
|
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|
2242 ref_class_type.name() != superk->name()) { |
| 6605 | 2243 verify_error(ErrorContext::bad_type(bci, |
| 2244 TypeOrigin::implicit(ref_class_type), | |
| 2245 TypeOrigin::implicit(current_type())), | |
| 2246 "Bad <init> method call"); | |
| 0 | 2247 return; |
| 2248 } | |
| 2249 current_frame->initialize_object(type, current_type()); | |
| 2250 *this_uninit = true; | |
| 2251 } else if (type.is_uninitialized()) { | |
| 2252 u2 new_offset = type.bci(); | |
| 2253 address new_bcp = bcs->bcp() - bci + new_offset; | |
| 2254 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
| 6605 | 2255 /* Unreachable? Stack map parsing ensures valid type and new |
| 2256 * instructions have a valid BCI. */ | |
| 2257 verify_error(ErrorContext::bad_code(new_offset), | |
| 2258 "Expecting new instruction"); | |
| 0 | 2259 return; |
| 2260 } | |
| 2261 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
| 6605 | 2262 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
| 0 | 2263 |
| 2264 // The method must be an <init> method of the indicated class | |
| 2265 VerificationType new_class_type = cp_index_to_type( | |
| 2266 new_class_index, cp, CHECK_VERIFY(this)); | |
| 2267 if (!new_class_type.equals(ref_class_type)) { | |
| 6605 | 2268 verify_error(ErrorContext::bad_type(bci, |
| 2269 TypeOrigin::cp(new_class_index, new_class_type), | |
| 2270 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
| 2271 "Call to wrong <init> method"); | |
| 0 | 2272 return; |
| 2273 } | |
| 2274 // According to the VM spec, if the referent class is a superclass of the | |
| 2275 // current class, and is in a different runtime package, and the method is | |
| 2276 // protected, then the objectref must be the current class or a subclass | |
| 2277 // of the current class. | |
| 2278 VerificationType objectref_type = new_class_type; | |
| 2279 if (name_in_supers(ref_class_type.name(), current_class())) { | |
|
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2280 Klass* ref_klass = load_class( |
| 0 | 2281 ref_class_type.name(), CHECK_VERIFY(this)); |
|
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2282 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
| 0 | 2283 vmSymbols::object_initializer_name(), |
| 1565 | 2284 cp->signature_ref_at(bcs->get_index_u2())); |
| 0 | 2285 instanceKlassHandle mh(THREAD, m->method_holder()); |
| 2286 if (m->is_protected() && !mh->is_same_class_package(_klass())) { | |
| 2287 bool assignable = current_type().is_assignable_from( | |
|
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|
2288 objectref_type, this, CHECK_VERIFY(this)); |
| 0 | 2289 if (!assignable) { |
| 6605 | 2290 verify_error(ErrorContext::bad_type(bci, |
| 2291 TypeOrigin::cp(new_class_index, objectref_type), | |
| 2292 TypeOrigin::implicit(current_type())), | |
| 2293 "Bad access to protected <init> method"); | |
| 0 | 2294 return; |
| 2295 } | |
| 2296 } | |
| 2297 } | |
| 2298 current_frame->initialize_object(type, new_class_type); | |
| 2299 } else { | |
| 6605 | 2300 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
| 2301 "Bad operand type when invoking <init>"); | |
| 0 | 2302 return; |
| 2303 } | |
| 2304 } | |
| 2305 | |
| 2306 void ClassVerifier::verify_invoke_instructions( | |
| 2307 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 2308 bool *this_uninit, VerificationType return_type, | |
| 2309 constantPoolHandle cp, TRAPS) { | |
| 2310 // Make sure the constant pool item is the right type | |
| 1565 | 2311 u2 index = bcs->get_index_u2(); |
| 2312 Bytecodes::Code opcode = bcs->raw_code(); | |
| 6934 | 2313 unsigned int types; |
| 2314 switch (opcode) { | |
| 2315 case Bytecodes::_invokeinterface: | |
| 2316 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
| 2317 break; | |
| 2318 case Bytecodes::_invokedynamic: | |
| 2319 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
| 2320 break; | |
| 2321 case Bytecodes::_invokespecial: | |
| 2322 types = (1 << JVM_CONSTANT_InterfaceMethodref) | | |
| 2323 (1 << JVM_CONSTANT_Methodref); | |
| 2324 break; | |
| 8060 | 2325 case Bytecodes::_invokestatic: |
| 2326 types = (_klass->major_version() < STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION) ? | |
| 2327 (1 << JVM_CONSTANT_Methodref) : | |
| 2328 ((1 << JVM_CONSTANT_InterfaceMethodref) | (1 << JVM_CONSTANT_Methodref)); | |
| 2329 break; | |
| 6934 | 2330 default: |
| 2331 types = 1 << JVM_CONSTANT_Methodref; | |
| 2332 } | |
| 6605 | 2333 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
| 0 | 2334 |
| 2335 // Get method name and signature | |
|
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2336 Symbol* method_name = cp->name_ref_at(index); |
|
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|
2337 Symbol* method_sig = cp->signature_ref_at(index); |
| 0 | 2338 |
| 2339 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
| 2340 class_format_error( | |
| 2341 "Invalid method signature in class %s referenced " | |
| 2342 "from constant pool index %d", _klass->external_name(), index); | |
| 2343 return; | |
| 2344 } | |
| 2345 | |
| 2346 // Get referenced class type | |
|
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|
2347 VerificationType ref_class_type; |
|
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|
2348 if (opcode == Bytecodes::_invokedynamic) { |
| 1602 | 2349 if (!EnableInvokeDynamic || |
| 2350 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
|
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|
2351 class_format_error( |
| 1602 | 2352 (!EnableInvokeDynamic ? |
| 2353 "invokedynamic instructions not enabled in this JVM" : | |
| 2354 "invokedynamic instructions not supported by this class file version"), | |
|
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2355 _klass->external_name()); |
|
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|
2356 return; |
|
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|
2357 } |
|
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|
2358 } else { |
|
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|
2359 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
|
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|
2360 } |
| 0 | 2361 |
| 2362 // For a small signature length, we just allocate 128 bytes instead | |
| 2363 // of parsing the signature once to find its size. | |
| 2364 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
| 2365 // longs/doubles to be consertive. | |
| 2366 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2367 "buffer type must match VerificationType size"); | |
| 2368 uintptr_t on_stack_sig_types_buffer[128]; | |
| 2369 // If we make a VerificationType[128] array directly, the compiler calls | |
| 2370 // to the c-runtime library to do the allocation instead of just | |
| 2371 // stack allocating it. Plus it would run constructors. This shows up | |
| 2372 // in performance profiles. | |
| 2373 | |
| 2374 VerificationType* sig_types; | |
| 2375 int size = (method_sig->utf8_length() - 3) * 2; | |
| 2376 if (size > 128) { | |
| 2377 // Long and double occupies two slots here. | |
| 2378 ArgumentSizeComputer size_it(method_sig); | |
| 2379 size = size_it.size(); | |
| 2380 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
| 2381 } else{ | |
| 2382 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
| 2383 } | |
| 2384 SignatureStream sig_stream(method_sig); | |
| 2385 int sig_i = 0; | |
| 2386 while (!sig_stream.at_return_type()) { | |
| 2387 sig_i += change_sig_to_verificationType( | |
| 2388 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
| 2389 sig_stream.next(); | |
| 2390 } | |
| 2391 int nargs = sig_i; | |
| 2392 | |
| 2393 #ifdef ASSERT | |
| 2394 { | |
| 2395 ArgumentSizeComputer size_it(method_sig); | |
| 2396 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
| 2397 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
| 2398 } | |
| 2399 #endif | |
| 2400 | |
| 2401 // Check instruction operands | |
| 2402 u2 bci = bcs->bci(); | |
| 2403 if (opcode == Bytecodes::_invokeinterface) { | |
| 2404 address bcp = bcs->bcp(); | |
| 2405 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
| 2406 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
| 2407 // the difference between the size of the operand stack before and after the instruction | |
| 2408 // executes. | |
| 2409 if (*(bcp+3) != (nargs+1)) { | |
| 6605 | 2410 verify_error(ErrorContext::bad_code(bci), |
| 2411 "Inconsistent args count operand in invokeinterface"); | |
| 0 | 2412 return; |
| 2413 } | |
| 2414 if (*(bcp+4) != 0) { | |
| 6605 | 2415 verify_error(ErrorContext::bad_code(bci), |
| 2416 "Fourth operand byte of invokeinterface must be zero"); | |
| 0 | 2417 return; |
| 2418 } | |
| 2419 } | |
| 2420 | |
|
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|
2421 if (opcode == Bytecodes::_invokedynamic) { |
|
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2422 address bcp = bcs->bcp(); |
|
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|
2423 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
| 6605 | 2424 verify_error(ErrorContext::bad_code(bci), |
| 2425 "Third and fourth operand bytes of invokedynamic must be zero"); | |
|
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2426 return; |
|
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|
2427 } |
|
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|
2428 } |
|
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|
2429 |
| 0 | 2430 if (method_name->byte_at(0) == '<') { |
| 2431 // Make sure <init> can only be invoked by invokespecial | |
| 2432 if (opcode != Bytecodes::_invokespecial || | |
|
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2433 method_name != vmSymbols::object_initializer_name()) { |
| 6605 | 2434 verify_error(ErrorContext::bad_code(bci), |
| 2435 "Illegal call to internal method"); | |
| 0 | 2436 return; |
| 2437 } | |
| 2438 } else if (opcode == Bytecodes::_invokespecial | |
| 2439 && !ref_class_type.equals(current_type()) | |
| 2440 && !ref_class_type.equals(VerificationType::reference_type( | |
|
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2441 current_class()->super()->name()))) { |
| 0 | 2442 bool subtype = ref_class_type.is_assignable_from( |
|
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|
2443 current_type(), this, CHECK_VERIFY(this)); |
| 0 | 2444 if (!subtype) { |
| 6605 | 2445 verify_error(ErrorContext::bad_code(bci), |
| 2446 "Bad invokespecial instruction: " | |
| 0 | 2447 "current class isn't assignable to reference class."); |
| 2448 return; | |
| 2449 } | |
| 2450 } | |
| 2451 // Match method descriptor with operand stack | |
| 2452 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
| 2453 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
| 2454 } | |
| 2455 // Check objectref on operand stack | |
|
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|
2456 if (opcode != Bytecodes::_invokestatic && |
|
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|
2457 opcode != Bytecodes::_invokedynamic) { |
|
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|
2458 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
| 6605 | 2459 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
| 0 | 2460 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
| 2461 } else { // other methods | |
| 2462 // Ensures that target class is assignable to method class. | |
| 2463 if (opcode == Bytecodes::_invokespecial) { | |
| 2464 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); | |
| 2465 } else if (opcode == Bytecodes::_invokevirtual) { | |
| 2466 VerificationType stack_object_type = | |
| 2467 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2468 if (current_type() != stack_object_type) { | |
| 2469 assert(cp->cache() == NULL, "not rewritten yet"); | |
|
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|
2470 Symbol* ref_class_name = |
|
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|
2471 cp->klass_name_at(cp->klass_ref_index_at(index)); |
| 0 | 2472 // See the comments in verify_field_instructions() for |
| 2473 // the rationale behind this. | |
|
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2474 if (name_in_supers(ref_class_name, current_class())) { |
|
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2475 Klass* ref_class = load_class(ref_class_name, CHECK); |
| 0 | 2476 if (is_protected_access( |
|
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|
2477 _klass, ref_class, method_name, method_sig, true)) { |
| 0 | 2478 // It's protected access, check if stack object is |
| 2479 // assignable to current class. | |
| 2480 bool is_assignable = current_type().is_assignable_from( | |
|
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diff
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|
2481 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2482 if (!is_assignable) { |
| 2483 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
| 2484 && stack_object_type.is_array() | |
|
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|
2485 && method_name == vmSymbols::clone_name()) { |
| 0 | 2486 // Special case: arrays pretend to implement public Object |
| 2487 // clone(). | |
| 2488 } else { | |
| 6605 | 2489 verify_error(ErrorContext::bad_type(bci, |
| 2490 current_frame->stack_top_ctx(), | |
| 2491 TypeOrigin::implicit(current_type())), | |
| 2492 "Bad access to protected data in invokevirtual"); | |
| 0 | 2493 return; |
| 2494 } | |
| 2495 } | |
| 2496 } | |
| 2497 } | |
| 2498 } | |
| 2499 } else { | |
| 2500 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
| 2501 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2502 } | |
| 2503 } | |
| 2504 } | |
| 2505 // Push the result type. | |
| 2506 if (sig_stream.type() != T_VOID) { | |
|
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|
2507 if (method_name == vmSymbols::object_initializer_name()) { |
| 0 | 2508 // <init> method must have a void return type |
| 6605 | 2509 /* Unreachable? Class file parser verifies that methods with '<' have |
| 2510 * void return */ | |
| 2511 verify_error(ErrorContext::bad_code(bci), | |
| 2512 "Return type must be void in <init> method"); | |
| 0 | 2513 return; |
| 2514 } | |
| 2515 VerificationType return_type[2]; | |
| 2516 int n = change_sig_to_verificationType( | |
| 2517 &sig_stream, return_type, CHECK_VERIFY(this)); | |
| 2518 for (int i = 0; i < n; i++) { | |
| 2519 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
| 2520 } | |
| 2521 } | |
| 2522 } | |
| 2523 | |
| 2524 VerificationType ClassVerifier::get_newarray_type( | |
| 2525 u2 index, u2 bci, TRAPS) { | |
| 2526 const char* from_bt[] = { | |
| 2527 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
| 2528 }; | |
| 2529 if (index < T_BOOLEAN || index > T_LONG) { | |
| 6605 | 2530 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
| 0 | 2531 return VerificationType::bogus_type(); |
| 2532 } | |
| 2533 | |
| 2534 // from_bt[index] contains the array signature which has a length of 2 | |
|
2177
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diff
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|
2535 Symbol* sig = create_temporary_symbol( |
| 0 | 2536 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
| 2537 return VerificationType::reference_type(sig); | |
| 2538 } | |
| 2539 | |
| 2540 void ClassVerifier::verify_anewarray( | |
| 6605 | 2541 u2 bci, u2 index, constantPoolHandle cp, |
| 2542 StackMapFrame* current_frame, TRAPS) { | |
| 2543 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
| 0 | 2544 current_frame->pop_stack( |
| 2545 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2546 | |
| 2547 VerificationType component_type = | |
| 2548 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 2549 int length; | |
| 2550 char* arr_sig_str; | |
| 2551 if (component_type.is_array()) { // it's an array | |
| 2552 const char* component_name = component_type.name()->as_utf8(); | |
| 2553 // add one dimension to component | |
| 2554 length = (int)strlen(component_name) + 1; | |
| 2555 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2556 arr_sig_str[0] = '['; | |
| 2557 strncpy(&arr_sig_str[1], component_name, length - 1); | |
| 2558 } else { // it's an object or interface | |
| 2559 const char* component_name = component_type.name()->as_utf8(); | |
| 2560 // add one dimension to component with 'L' prepended and ';' postpended. | |
| 2561 length = (int)strlen(component_name) + 3; | |
| 2562 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2563 arr_sig_str[0] = '['; | |
| 2564 arr_sig_str[1] = 'L'; | |
| 2565 strncpy(&arr_sig_str[2], component_name, length - 2); | |
| 2566 arr_sig_str[length - 1] = ';'; | |
| 2567 } | |
|
2177
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diff
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|
2568 Symbol* arr_sig = create_temporary_symbol( |
| 0 | 2569 arr_sig_str, length, CHECK_VERIFY(this)); |
| 2570 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
| 2571 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 2572 } | |
| 2573 | |
| 2574 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2575 current_frame->get_local( | |
| 2576 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2577 current_frame->push_stack( | |
| 2578 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2579 } | |
| 2580 | |
| 2581 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2582 current_frame->get_local_2( | |
| 2583 index, VerificationType::long_type(), | |
| 2584 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2585 current_frame->push_stack_2( | |
| 2586 VerificationType::long_type(), | |
| 2587 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2588 } | |
| 2589 | |
| 2590 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2591 current_frame->get_local( | |
| 2592 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2593 current_frame->push_stack( | |
| 2594 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2595 } | |
| 2596 | |
| 2597 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2598 current_frame->get_local_2( | |
| 2599 index, VerificationType::double_type(), | |
| 2600 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2601 current_frame->push_stack_2( | |
| 2602 VerificationType::double_type(), | |
| 2603 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2604 } | |
| 2605 | |
| 2606 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2607 VerificationType type = current_frame->get_local( | |
| 2608 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2609 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
| 2610 } | |
| 2611 | |
| 2612 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2613 current_frame->pop_stack( | |
| 2614 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2615 current_frame->set_local( | |
| 2616 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2617 } | |
| 2618 | |
| 2619 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2620 current_frame->pop_stack_2( | |
| 2621 VerificationType::long2_type(), | |
| 2622 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 2623 current_frame->set_local_2( | |
| 2624 index, VerificationType::long_type(), | |
| 2625 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2626 } | |
| 2627 | |
| 2628 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2629 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2630 current_frame->set_local( | |
| 2631 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2632 } | |
| 2633 | |
| 2634 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2635 current_frame->pop_stack_2( | |
| 2636 VerificationType::double2_type(), | |
| 2637 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 2638 current_frame->set_local_2( | |
| 2639 index, VerificationType::double_type(), | |
| 2640 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2641 } | |
| 2642 | |
| 2643 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2644 VerificationType type = current_frame->pop_stack( | |
| 2645 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2646 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2647 } | |
| 2648 | |
| 2649 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2650 VerificationType type = current_frame->get_local( | |
| 2651 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2652 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2653 } | |
| 2654 | |
| 2655 void ClassVerifier::verify_return_value( | |
| 6605 | 2656 VerificationType return_type, VerificationType type, u2 bci, |
| 2657 StackMapFrame* current_frame, TRAPS) { | |
| 0 | 2658 if (return_type == VerificationType::bogus_type()) { |
| 6605 | 2659 verify_error(ErrorContext::bad_type(bci, |
| 2660 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2661 "Method expects a return value"); | |
| 0 | 2662 return; |
| 2663 } | |
|
2177
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coleenp
parents:
1980
diff
changeset
|
2664 bool match = return_type.is_assignable_from(type, this, CHECK_VERIFY(this)); |
| 0 | 2665 if (!match) { |
| 6605 | 2666 verify_error(ErrorContext::bad_type(bci, |
| 2667 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2668 "Bad return type"); | |
| 0 | 2669 return; |
| 2670 } | |
| 2671 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2672 |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2673 // The verifier creates symbols which are substrings of Symbols. |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2674 // These are stored in the verifier until the end of verification so that |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2675 // they can be reference counted. |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2676 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2677 int end, TRAPS) { |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2678 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2679 _symbols->push(sym); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2680 return sym; |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2681 } |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2682 |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2683 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2684 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2685 _symbols->push(sym); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2686 return sym; |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2687 } |