Mercurial > hg > truffle
annotate src/share/vm/classfile/verifier.cpp @ 21810:0366a71eda74
8047125: (ref) More phantom object references
Reviewed-by: mchung, dfuchs, ahgross, jmasa, brutisso, mgerdin
Contributed-by: kim.barrett@oracle.com
| author | jmasa |
|---|---|
| date | Fri, 26 Sep 2014 17:48:10 -0400 |
| parents | 7ebfc4557ca5 |
| children | 4b26b980ec8d |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 17573 | 2 * Copyright (c) 1998, 2014, 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 } | |
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131 if (klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { |
| 6605 | 132 ClassVerifier split_verifier(klass, THREAD); |
| 133 split_verifier.verify_class(THREAD); | |
| 134 exception_name = split_verifier.result(); | |
| 135 if (can_failover && !HAS_PENDING_EXCEPTION && | |
| 0 | 136 (exception_name == vmSymbols::java_lang_VerifyError() || |
| 137 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
| 6605 | 138 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 139 tty->print_cr( |
| 140 "Fail over class verification to old verifier for: %s", klassName); | |
| 141 } | |
| 142 exception_name = inference_verify( | |
| 143 klass, message_buffer, message_buffer_len, THREAD); | |
| 144 } | |
| 6605 | 145 if (exception_name != NULL) { |
| 146 exception_message = split_verifier.exception_message(); | |
| 147 } | |
| 0 | 148 } else { |
| 149 exception_name = inference_verify( | |
| 150 klass, message_buffer, message_buffer_len, THREAD); | |
| 151 } | |
| 152 | |
| 6605 | 153 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 154 if (HAS_PENDING_EXCEPTION) { |
| 155 tty->print("Verification for %s has", klassName); | |
| 156 tty->print_cr(" exception pending %s ", | |
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157 InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
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158 } else if (exception_name != NULL) { |
| 0 | 159 tty->print_cr("Verification for %s failed", klassName); |
| 160 } | |
| 161 tty->print_cr("End class verification for: %s", klassName); | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 if (HAS_PENDING_EXCEPTION) { | |
| 166 return false; // use the existing exception | |
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167 } else if (exception_name == NULL) { |
| 0 | 168 return true; // verifcation succeeded |
| 169 } else { // VerifyError or ClassFormatError to be created and thrown | |
| 170 ResourceMark rm(THREAD); | |
| 171 instanceKlassHandle kls = | |
| 172 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
| 173 while (!kls.is_null()) { | |
| 174 if (kls == klass) { | |
| 175 // If the class being verified is the exception we're creating | |
| 176 // or one of it's superclasses, we're in trouble and are going | |
| 177 // to infinitely recurse when we try to initialize the exception. | |
| 178 // So bail out here by throwing the preallocated VM error. | |
| 179 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
| 180 } | |
| 181 kls = kls->super(); | |
| 182 } | |
| 183 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
| 6605 | 184 THROW_MSG_(exception_name, exception_message, false); |
| 0 | 185 } |
| 186 } | |
| 187 | |
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188 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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189 Symbol* name = klass->name(); |
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190 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
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191 |
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192 bool is_reflect = refl_magic_klass != NULL && klass->is_subtype_of(refl_magic_klass); |
| 0 | 193 |
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194 return (should_verify_for(klass->class_loader(), should_verify_class) && |
| 0 | 195 // return if the class is a bootstrapping class |
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196 // or defineClass specified not to verify by default (flags override passed arg) |
| 0 | 197 // We need to skip the following four for bootstraping |
| 198 name != vmSymbols::java_lang_Object() && | |
| 199 name != vmSymbols::java_lang_Class() && | |
| 200 name != vmSymbols::java_lang_String() && | |
| 201 name != vmSymbols::java_lang_Throwable() && | |
| 202 | |
| 203 // Can not verify the bytecodes for shared classes because they have | |
| 204 // already been rewritten to contain constant pool cache indices, | |
| 205 // which the verifier can't understand. | |
| 206 // Shared classes shouldn't have stackmaps either. | |
| 207 !klass()->is_shared() && | |
| 208 | |
| 209 // As of the fix for 4486457 we disable verification for all of the | |
| 210 // dynamically-generated bytecodes associated with the 1.4 | |
| 211 // reflection implementation, not just those associated with | |
| 212 // sun/reflect/SerializationConstructorAccessor. | |
| 213 // NOTE: this is called too early in the bootstrapping process to be | |
| 214 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
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215 // Also for lambda generated code, gte jdk8 |
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216 (!is_reflect || VerifyReflectionBytecodes)); |
| 0 | 217 } |
| 218 | |
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219 Symbol* Verifier::inference_verify( |
| 0 | 220 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
| 221 JavaThread* thread = (JavaThread*)THREAD; | |
| 222 JNIEnv *env = thread->jni_environment(); | |
| 223 | |
| 224 void* verify_func = verify_byte_codes_fn(); | |
| 225 | |
| 226 if (verify_func == NULL) { | |
| 227 jio_snprintf(message, message_len, "Could not link verifier"); | |
| 228 return vmSymbols::java_lang_VerifyError(); | |
| 229 } | |
| 230 | |
| 231 ResourceMark rm(THREAD); | |
| 6605 | 232 if (VerboseVerification) { |
| 0 | 233 tty->print_cr("Verifying class %s with old format", klass->external_name()); |
| 234 } | |
| 235 | |
| 236 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
| 237 jint result; | |
| 238 | |
| 239 { | |
| 240 HandleMark hm(thread); | |
| 241 ThreadToNativeFromVM ttn(thread); | |
| 242 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
| 243 // code knows that we have left the VM | |
| 244 | |
| 245 if (_is_new_verify_byte_codes_fn) { | |
| 246 verify_byte_codes_fn_new_t func = | |
| 247 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
| 248 result = (*func)(env, cls, message, (int)message_len, | |
| 249 klass->major_version()); | |
| 250 } else { | |
| 251 verify_byte_codes_fn_t func = | |
| 252 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
| 253 result = (*func)(env, cls, message, (int)message_len); | |
| 254 } | |
| 255 } | |
| 256 | |
| 257 JNIHandles::destroy_local(cls); | |
| 258 | |
| 259 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
| 260 // to be changed (still return jboolean (unsigned char)), and result is | |
| 261 // 1 when verification is passed. | |
| 262 if (result == 0) { | |
| 263 return vmSymbols::java_lang_VerifyError(); | |
| 264 } else if (result == 1) { | |
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265 return NULL; // verified. |
| 0 | 266 } else if (result == 2) { |
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267 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
| 0 | 268 } else if (result == 3) { |
| 269 return vmSymbols::java_lang_ClassFormatError(); | |
| 270 } else { | |
| 271 ShouldNotReachHere(); | |
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272 return NULL; |
| 0 | 273 } |
| 274 } | |
| 275 | |
| 6605 | 276 TypeOrigin TypeOrigin::null() { |
| 277 return TypeOrigin(); | |
| 278 } | |
| 279 TypeOrigin TypeOrigin::local(u2 index, StackMapFrame* frame) { | |
| 280 assert(frame != NULL, "Must have a frame"); | |
| 281 return TypeOrigin(CF_LOCALS, index, StackMapFrame::copy(frame), | |
| 282 frame->local_at(index)); | |
| 283 } | |
| 284 TypeOrigin TypeOrigin::stack(u2 index, StackMapFrame* frame) { | |
| 285 assert(frame != NULL, "Must have a frame"); | |
| 286 return TypeOrigin(CF_STACK, index, StackMapFrame::copy(frame), | |
| 287 frame->stack_at(index)); | |
| 288 } | |
| 289 TypeOrigin TypeOrigin::sm_local(u2 index, StackMapFrame* frame) { | |
| 290 assert(frame != NULL, "Must have a frame"); | |
| 291 return TypeOrigin(SM_LOCALS, index, StackMapFrame::copy(frame), | |
| 292 frame->local_at(index)); | |
| 293 } | |
| 294 TypeOrigin TypeOrigin::sm_stack(u2 index, StackMapFrame* frame) { | |
| 295 assert(frame != NULL, "Must have a frame"); | |
| 296 return TypeOrigin(SM_STACK, index, StackMapFrame::copy(frame), | |
| 297 frame->stack_at(index)); | |
| 298 } | |
| 299 TypeOrigin TypeOrigin::bad_index(u2 index) { | |
| 300 return TypeOrigin(BAD_INDEX, index, NULL, VerificationType::bogus_type()); | |
| 301 } | |
| 302 TypeOrigin TypeOrigin::cp(u2 index, VerificationType vt) { | |
| 303 return TypeOrigin(CONST_POOL, index, NULL, vt); | |
| 304 } | |
| 305 TypeOrigin TypeOrigin::signature(VerificationType vt) { | |
| 306 return TypeOrigin(SIG, 0, NULL, vt); | |
| 307 } | |
| 308 TypeOrigin TypeOrigin::implicit(VerificationType t) { | |
| 309 return TypeOrigin(IMPLICIT, 0, NULL, t); | |
| 310 } | |
| 311 TypeOrigin TypeOrigin::frame(StackMapFrame* frame) { | |
| 312 return TypeOrigin(FRAME_ONLY, 0, StackMapFrame::copy(frame), | |
| 313 VerificationType::bogus_type()); | |
| 314 } | |
| 315 | |
| 316 void TypeOrigin::reset_frame() { | |
| 317 if (_frame != NULL) { | |
| 318 _frame->restore(); | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 void TypeOrigin::details(outputStream* ss) const { | |
| 323 _type.print_on(ss); | |
| 324 switch (_origin) { | |
| 325 case CF_LOCALS: | |
| 326 ss->print(" (current frame, locals[%d])", _index); | |
| 327 break; | |
| 328 case CF_STACK: | |
| 329 ss->print(" (current frame, stack[%d])", _index); | |
| 330 break; | |
| 331 case SM_LOCALS: | |
| 332 ss->print(" (stack map, locals[%d])", _index); | |
| 333 break; | |
| 334 case SM_STACK: | |
| 335 ss->print(" (stack map, stack[%d])", _index); | |
| 336 break; | |
| 337 case CONST_POOL: | |
| 338 ss->print(" (constant pool %d)", _index); | |
| 339 break; | |
| 340 case SIG: | |
| 341 ss->print(" (from method signature)"); | |
| 342 break; | |
| 343 case IMPLICIT: | |
| 344 case FRAME_ONLY: | |
| 345 case NONE: | |
| 346 default: | |
| 347 ; | |
| 348 } | |
| 349 } | |
| 350 | |
| 351 #ifdef ASSERT | |
| 352 void TypeOrigin::print_on(outputStream* str) const { | |
| 353 str->print("{%d,%d,%p:", _origin, _index, _frame); | |
| 354 if (_frame != NULL) { | |
| 355 _frame->print_on(str); | |
| 356 } else { | |
| 357 str->print("null"); | |
| 358 } | |
| 359 str->print(","); | |
| 360 _type.print_on(str); | |
| 361 str->print("}"); | |
| 362 } | |
| 363 #endif | |
| 364 | |
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365 void ErrorContext::details(outputStream* ss, const Method* method) const { |
| 6605 | 366 if (is_valid()) { |
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367 ss->cr(); |
| 6605 | 368 ss->print_cr("Exception Details:"); |
| 369 location_details(ss, method); | |
| 370 reason_details(ss); | |
| 371 frame_details(ss); | |
| 372 bytecode_details(ss, method); | |
| 373 handler_details(ss, method); | |
| 374 stackmap_details(ss, method); | |
| 375 } | |
| 376 } | |
| 377 | |
| 378 void ErrorContext::reason_details(outputStream* ss) const { | |
| 379 streamIndentor si(ss); | |
| 380 ss->indent().print_cr("Reason:"); | |
| 381 streamIndentor si2(ss); | |
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382 ss->indent().print("%s", ""); |
| 6605 | 383 switch (_fault) { |
| 384 case INVALID_BYTECODE: | |
| 385 ss->print("Error exists in the bytecode"); | |
| 386 break; | |
| 387 case WRONG_TYPE: | |
| 388 if (_expected.is_valid()) { | |
| 389 ss->print("Type "); | |
| 390 _type.details(ss); | |
| 391 ss->print(" is not assignable to "); | |
| 392 _expected.details(ss); | |
| 393 } else { | |
| 394 ss->print("Invalid type: "); | |
| 395 _type.details(ss); | |
| 396 } | |
| 397 break; | |
| 398 case FLAGS_MISMATCH: | |
| 399 if (_expected.is_valid()) { | |
| 400 ss->print("Current frame's flags are not assignable " | |
| 401 "to stack map frame's."); | |
| 402 } else { | |
| 403 ss->print("Current frame's flags are invalid in this context."); | |
| 404 } | |
| 405 break; | |
| 406 case BAD_CP_INDEX: | |
| 407 ss->print("Constant pool index %d is invalid", _type.index()); | |
| 408 break; | |
| 409 case BAD_LOCAL_INDEX: | |
| 410 ss->print("Local index %d is invalid", _type.index()); | |
| 411 break; | |
| 412 case LOCALS_SIZE_MISMATCH: | |
| 413 ss->print("Current frame's local size doesn't match stackmap."); | |
| 414 break; | |
| 415 case STACK_SIZE_MISMATCH: | |
| 416 ss->print("Current frame's stack size doesn't match stackmap."); | |
| 417 break; | |
| 418 case STACK_OVERFLOW: | |
| 419 ss->print("Exceeded max stack size."); | |
| 420 break; | |
| 421 case STACK_UNDERFLOW: | |
| 422 ss->print("Attempt to pop empty stack."); | |
| 423 break; | |
| 424 case MISSING_STACKMAP: | |
| 425 ss->print("Expected stackmap frame at this location."); | |
| 426 break; | |
| 427 case BAD_STACKMAP: | |
| 428 ss->print("Invalid stackmap specification."); | |
| 429 break; | |
| 430 case UNKNOWN: | |
| 431 default: | |
| 432 ShouldNotReachHere(); | |
| 433 ss->print_cr("Unknown"); | |
| 434 } | |
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435 ss->cr(); |
| 6605 | 436 } |
| 437 | |
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438 void ErrorContext::location_details(outputStream* ss, const Method* method) const { |
| 6605 | 439 if (_bci != -1 && method != NULL) { |
| 440 streamIndentor si(ss); | |
| 441 const char* bytecode_name = "<invalid>"; | |
| 442 if (method->validate_bci_from_bcx(_bci) != -1) { | |
| 443 Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); | |
| 444 if (Bytecodes::is_defined(code)) { | |
| 445 bytecode_name = Bytecodes::name(code); | |
| 446 } else { | |
| 447 bytecode_name = "<illegal>"; | |
| 448 } | |
| 449 } | |
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450 InstanceKlass* ik = method->method_holder(); |
| 6605 | 451 ss->indent().print_cr("Location:"); |
| 452 streamIndentor si2(ss); | |
| 453 ss->indent().print_cr("%s.%s%s @%d: %s", | |
| 454 ik->name()->as_C_string(), method->name()->as_C_string(), | |
| 455 method->signature()->as_C_string(), _bci, bytecode_name); | |
| 456 } | |
| 457 } | |
| 458 | |
| 459 void ErrorContext::frame_details(outputStream* ss) const { | |
| 460 streamIndentor si(ss); | |
| 461 if (_type.is_valid() && _type.frame() != NULL) { | |
| 462 ss->indent().print_cr("Current Frame:"); | |
| 463 streamIndentor si2(ss); | |
| 464 _type.frame()->print_on(ss); | |
| 465 } | |
| 466 if (_expected.is_valid() && _expected.frame() != NULL) { | |
| 467 ss->indent().print_cr("Stackmap Frame:"); | |
| 468 streamIndentor si2(ss); | |
| 469 _expected.frame()->print_on(ss); | |
| 470 } | |
| 471 } | |
| 472 | |
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473 void ErrorContext::bytecode_details(outputStream* ss, const Method* method) const { |
| 6605 | 474 if (method != NULL) { |
| 475 streamIndentor si(ss); | |
| 476 ss->indent().print_cr("Bytecode:"); | |
| 477 streamIndentor si2(ss); | |
| 478 ss->print_data(method->code_base(), method->code_size(), false); | |
| 479 } | |
| 480 } | |
| 481 | |
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482 void ErrorContext::handler_details(outputStream* ss, const Method* method) const { |
| 6605 | 483 if (method != NULL) { |
| 484 streamIndentor si(ss); | |
| 485 ExceptionTable table(method); | |
| 486 if (table.length() > 0) { | |
| 487 ss->indent().print_cr("Exception Handler Table:"); | |
| 488 streamIndentor si2(ss); | |
| 489 for (int i = 0; i < table.length(); ++i) { | |
| 490 ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), | |
| 491 table.end_pc(i), table.handler_pc(i)); | |
| 492 } | |
| 493 } | |
| 494 } | |
| 495 } | |
| 496 | |
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497 void ErrorContext::stackmap_details(outputStream* ss, const Method* method) const { |
| 6605 | 498 if (method != NULL && method->has_stackmap_table()) { |
| 499 streamIndentor si(ss); | |
| 500 ss->indent().print_cr("Stackmap Table:"); | |
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501 Array<u1>* data = method->stackmap_data(); |
| 6605 | 502 stack_map_table* sm_table = |
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503 stack_map_table::at((address)data->adr_at(0)); |
| 6605 | 504 stack_map_frame* sm_frame = sm_table->entries(); |
| 505 streamIndentor si2(ss); | |
| 506 int current_offset = -1; | |
| 507 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { | |
| 508 ss->indent(); | |
| 509 sm_frame->print_on(ss, current_offset); | |
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510 ss->cr(); |
| 6605 | 511 current_offset += sm_frame->offset_delta(); |
| 512 sm_frame = sm_frame->next(); | |
| 513 } | |
| 514 } | |
| 515 } | |
| 516 | |
| 0 | 517 // Methods in ClassVerifier |
| 518 | |
| 519 ClassVerifier::ClassVerifier( | |
| 6605 | 520 instanceKlassHandle klass, TRAPS) |
| 521 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { | |
| 0 | 522 _this_type = VerificationType::reference_type(klass->name()); |
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523 // Create list to hold symbols in reference area. |
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524 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
| 0 | 525 } |
| 526 | |
| 527 ClassVerifier::~ClassVerifier() { | |
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528 // Decrement the reference count for any symbols created. |
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529 for (int i = 0; i < _symbols->length(); i++) { |
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530 Symbol* s = _symbols->at(i); |
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531 s->decrement_refcount(); |
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532 } |
| 0 | 533 } |
| 534 | |
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535 VerificationType ClassVerifier::object_type() const { |
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536 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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537 } |
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538 |
| 6605 | 539 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
| 540 VerificationType vt = VerificationType::reference_type( | |
| 541 create_temporary_symbol(sig, (int)strlen(sig), THREAD)); | |
| 542 return TypeOrigin::implicit(vt); | |
| 543 } | |
| 544 | |
| 0 | 545 void ClassVerifier::verify_class(TRAPS) { |
| 6605 | 546 if (VerboseVerification) { |
| 0 | 547 tty->print_cr("Verifying class %s with new format", |
| 548 _klass->external_name()); | |
| 549 } | |
| 550 | |
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551 Array<Method*>* methods = _klass->methods(); |
| 0 | 552 int num_methods = methods->length(); |
| 553 | |
| 554 for (int index = 0; index < num_methods; index++) { | |
| 1570 | 555 // Check for recursive re-verification before each method. |
| 556 if (was_recursively_verified()) return; | |
| 557 | |
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558 Method* m = methods->at(index); |
| 6934 | 559 if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
| 0 | 560 // If m is native or abstract, skip it. It is checked in class file |
| 6934 | 561 // parser that methods do not override a final method. Overpass methods |
| 562 // are trusted since the VM generates them. | |
| 0 | 563 continue; |
| 564 } | |
| 565 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
| 566 } | |
| 1570 | 567 |
| 6605 | 568 if (VerboseVerification || TraceClassInitialization) { |
| 1570 | 569 if (was_recursively_verified()) |
| 570 tty->print_cr("Recursive verification detected for: %s", | |
| 571 _klass->external_name()); | |
| 572 } | |
| 0 | 573 } |
| 574 | |
| 575 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
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576 HandleMark hm(THREAD); |
| 0 | 577 _method = m; // initialize _method |
| 6605 | 578 if (VerboseVerification) { |
| 0 | 579 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
| 580 } | |
| 581 | |
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582 // For clang, the only good constant format string is a literal constant format string. |
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583 #define bad_type_msg "Bad type on operand stack in %s" |
| 0 | 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 | |
| 17573 | 636 |
| 0 | 637 Bytecodes::Code opcode; |
| 638 while (!bcs.is_last_bytecode()) { | |
| 1570 | 639 // Check for recursive re-verification before each bytecode. |
| 640 if (was_recursively_verified()) return; | |
| 641 | |
| 0 | 642 opcode = bcs.raw_next(); |
| 643 u2 bci = bcs.bci(); | |
| 644 | |
| 645 // Set current frame's offset to bci | |
| 646 current_frame.set_offset(bci); | |
| 6605 | 647 current_frame.set_mark(); |
| 0 | 648 |
| 649 // Make sure every offset in stackmap table point to the beginning to | |
| 650 // an instruction. Match current_frame to stackmap_table entry with | |
| 651 // the same offset if exists. | |
| 652 stackmap_index = verify_stackmap_table( | |
| 653 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
| 654 no_control_flow, CHECK_VERIFY(this)); | |
| 655 | |
| 6605 | 656 |
| 0 | 657 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
| 658 | |
| 659 // Merge with the next instruction | |
| 660 { | |
| 661 u2 index; | |
| 662 int target; | |
| 663 VerificationType type, type2; | |
| 664 VerificationType atype; | |
| 665 | |
| 666 #ifndef PRODUCT | |
| 6605 | 667 if (VerboseVerification) { |
| 668 current_frame.print_on(tty); | |
| 0 | 669 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
| 670 } | |
| 671 #endif | |
| 672 | |
| 673 // Make sure wide instruction is in correct format | |
| 674 if (bcs.is_wide()) { | |
| 675 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
| 676 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
| 677 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
| 678 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
| 679 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
| 680 opcode != Bytecodes::_dstore) { | |
| 6605 | 681 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
| 682 * if we encounter a wide instruction that modifies an invalid | |
| 683 * opcode (not one of the ones listed above) */ | |
| 684 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
| 0 | 685 return; |
| 686 } | |
| 687 } | |
| 688 | |
| 689 switch (opcode) { | |
| 690 case Bytecodes::_nop : | |
| 691 no_control_flow = false; break; | |
| 692 case Bytecodes::_aconst_null : | |
| 693 current_frame.push_stack( | |
| 694 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 695 no_control_flow = false; break; | |
| 696 case Bytecodes::_iconst_m1 : | |
| 697 case Bytecodes::_iconst_0 : | |
| 698 case Bytecodes::_iconst_1 : | |
| 699 case Bytecodes::_iconst_2 : | |
| 700 case Bytecodes::_iconst_3 : | |
| 701 case Bytecodes::_iconst_4 : | |
| 702 case Bytecodes::_iconst_5 : | |
| 703 current_frame.push_stack( | |
| 704 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 705 no_control_flow = false; break; | |
| 706 case Bytecodes::_lconst_0 : | |
| 707 case Bytecodes::_lconst_1 : | |
| 708 current_frame.push_stack_2( | |
| 709 VerificationType::long_type(), | |
| 710 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 711 no_control_flow = false; break; | |
| 712 case Bytecodes::_fconst_0 : | |
| 713 case Bytecodes::_fconst_1 : | |
| 714 case Bytecodes::_fconst_2 : | |
| 715 current_frame.push_stack( | |
| 716 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 717 no_control_flow = false; break; | |
| 718 case Bytecodes::_dconst_0 : | |
| 719 case Bytecodes::_dconst_1 : | |
| 720 current_frame.push_stack_2( | |
| 721 VerificationType::double_type(), | |
| 722 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 723 no_control_flow = false; break; | |
| 724 case Bytecodes::_sipush : | |
| 725 case Bytecodes::_bipush : | |
| 726 current_frame.push_stack( | |
| 727 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 728 no_control_flow = false; break; | |
| 729 case Bytecodes::_ldc : | |
| 730 verify_ldc( | |
| 1565 | 731 opcode, bcs.get_index_u1(), ¤t_frame, |
| 0 | 732 cp, bci, CHECK_VERIFY(this)); |
| 733 no_control_flow = false; break; | |
| 734 case Bytecodes::_ldc_w : | |
| 735 case Bytecodes::_ldc2_w : | |
| 736 verify_ldc( | |
| 1565 | 737 opcode, bcs.get_index_u2(), ¤t_frame, |
| 0 | 738 cp, bci, CHECK_VERIFY(this)); |
| 739 no_control_flow = false; break; | |
| 740 case Bytecodes::_iload : | |
| 741 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 742 no_control_flow = false; break; | |
| 743 case Bytecodes::_iload_0 : | |
| 744 case Bytecodes::_iload_1 : | |
| 745 case Bytecodes::_iload_2 : | |
| 746 case Bytecodes::_iload_3 : | |
| 747 index = opcode - Bytecodes::_iload_0; | |
| 748 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 749 no_control_flow = false; break; | |
| 750 case Bytecodes::_lload : | |
| 751 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 752 no_control_flow = false; break; | |
| 753 case Bytecodes::_lload_0 : | |
| 754 case Bytecodes::_lload_1 : | |
| 755 case Bytecodes::_lload_2 : | |
| 756 case Bytecodes::_lload_3 : | |
| 757 index = opcode - Bytecodes::_lload_0; | |
| 758 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 759 no_control_flow = false; break; | |
| 760 case Bytecodes::_fload : | |
| 761 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 762 no_control_flow = false; break; | |
| 763 case Bytecodes::_fload_0 : | |
| 764 case Bytecodes::_fload_1 : | |
| 765 case Bytecodes::_fload_2 : | |
| 766 case Bytecodes::_fload_3 : | |
| 767 index = opcode - Bytecodes::_fload_0; | |
| 768 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 769 no_control_flow = false; break; | |
| 770 case Bytecodes::_dload : | |
| 771 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 772 no_control_flow = false; break; | |
| 773 case Bytecodes::_dload_0 : | |
| 774 case Bytecodes::_dload_1 : | |
| 775 case Bytecodes::_dload_2 : | |
| 776 case Bytecodes::_dload_3 : | |
| 777 index = opcode - Bytecodes::_dload_0; | |
| 778 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 779 no_control_flow = false; break; | |
| 780 case Bytecodes::_aload : | |
| 781 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 782 no_control_flow = false; break; | |
| 783 case Bytecodes::_aload_0 : | |
| 784 case Bytecodes::_aload_1 : | |
| 785 case Bytecodes::_aload_2 : | |
| 786 case Bytecodes::_aload_3 : | |
| 787 index = opcode - Bytecodes::_aload_0; | |
| 788 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 789 no_control_flow = false; break; | |
| 790 case Bytecodes::_iaload : | |
| 791 type = current_frame.pop_stack( | |
| 792 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 793 atype = current_frame.pop_stack( | |
| 794 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 795 if (!atype.is_int_array()) { | |
| 6605 | 796 verify_error(ErrorContext::bad_type(bci, |
| 797 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 798 bad_type_msg, "iaload"); | |
| 0 | 799 return; |
| 800 } | |
| 801 current_frame.push_stack( | |
| 802 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 803 no_control_flow = false; break; | |
| 804 case Bytecodes::_baload : | |
| 805 type = current_frame.pop_stack( | |
| 806 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 807 atype = current_frame.pop_stack( | |
| 808 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 809 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 810 verify_error( |
| 811 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 812 bad_type_msg, "baload"); | |
| 0 | 813 return; |
| 814 } | |
| 815 current_frame.push_stack( | |
| 816 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 817 no_control_flow = false; break; | |
| 818 case Bytecodes::_caload : | |
| 819 type = current_frame.pop_stack( | |
| 820 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 821 atype = current_frame.pop_stack( | |
| 822 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 823 if (!atype.is_char_array()) { | |
| 6605 | 824 verify_error(ErrorContext::bad_type(bci, |
| 825 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 826 bad_type_msg, "caload"); | |
| 0 | 827 return; |
| 828 } | |
| 829 current_frame.push_stack( | |
| 830 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 831 no_control_flow = false; break; | |
| 832 case Bytecodes::_saload : | |
| 833 type = current_frame.pop_stack( | |
| 834 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 835 atype = current_frame.pop_stack( | |
| 836 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 837 if (!atype.is_short_array()) { | |
| 6605 | 838 verify_error(ErrorContext::bad_type(bci, |
| 839 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 840 bad_type_msg, "saload"); | |
| 0 | 841 return; |
| 842 } | |
| 843 current_frame.push_stack( | |
| 844 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 845 no_control_flow = false; break; | |
| 846 case Bytecodes::_laload : | |
| 847 type = current_frame.pop_stack( | |
| 848 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 849 atype = current_frame.pop_stack( | |
| 850 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 851 if (!atype.is_long_array()) { | |
| 6605 | 852 verify_error(ErrorContext::bad_type(bci, |
| 853 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 854 bad_type_msg, "laload"); | |
| 0 | 855 return; |
| 856 } | |
| 857 current_frame.push_stack_2( | |
| 858 VerificationType::long_type(), | |
| 859 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 860 no_control_flow = false; break; | |
| 861 case Bytecodes::_faload : | |
| 862 type = current_frame.pop_stack( | |
| 863 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 864 atype = current_frame.pop_stack( | |
| 865 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 866 if (!atype.is_float_array()) { | |
| 6605 | 867 verify_error(ErrorContext::bad_type(bci, |
| 868 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 869 bad_type_msg, "faload"); | |
| 0 | 870 return; |
| 871 } | |
| 872 current_frame.push_stack( | |
| 873 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 874 no_control_flow = false; break; | |
| 875 case Bytecodes::_daload : | |
| 876 type = current_frame.pop_stack( | |
| 877 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 878 atype = current_frame.pop_stack( | |
| 879 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 880 if (!atype.is_double_array()) { | |
| 6605 | 881 verify_error(ErrorContext::bad_type(bci, |
| 882 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 883 bad_type_msg, "daload"); | |
| 0 | 884 return; |
| 885 } | |
| 886 current_frame.push_stack_2( | |
| 887 VerificationType::double_type(), | |
| 888 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 889 no_control_flow = false; break; | |
| 890 case Bytecodes::_aaload : { | |
| 891 type = current_frame.pop_stack( | |
| 892 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 893 atype = current_frame.pop_stack( | |
| 894 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 895 if (!atype.is_reference_array()) { | |
| 6605 | 896 verify_error(ErrorContext::bad_type(bci, |
| 897 current_frame.stack_top_ctx(), | |
| 898 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 899 bad_type_msg, "aaload"); | |
| 0 | 900 return; |
| 901 } | |
| 902 if (atype.is_null()) { | |
| 903 current_frame.push_stack( | |
| 904 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 905 } else { | |
| 906 VerificationType component = | |
|
2177
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1980
diff
changeset
|
907 atype.get_component(this, CHECK_VERIFY(this)); |
| 0 | 908 current_frame.push_stack(component, CHECK_VERIFY(this)); |
| 909 } | |
| 910 no_control_flow = false; break; | |
| 911 } | |
| 912 case Bytecodes::_istore : | |
| 913 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 914 no_control_flow = false; break; | |
| 915 case Bytecodes::_istore_0 : | |
| 916 case Bytecodes::_istore_1 : | |
| 917 case Bytecodes::_istore_2 : | |
| 918 case Bytecodes::_istore_3 : | |
| 919 index = opcode - Bytecodes::_istore_0; | |
| 920 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 921 no_control_flow = false; break; | |
| 922 case Bytecodes::_lstore : | |
| 923 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 924 no_control_flow = false; break; | |
| 925 case Bytecodes::_lstore_0 : | |
| 926 case Bytecodes::_lstore_1 : | |
| 927 case Bytecodes::_lstore_2 : | |
| 928 case Bytecodes::_lstore_3 : | |
| 929 index = opcode - Bytecodes::_lstore_0; | |
| 930 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 931 no_control_flow = false; break; | |
| 932 case Bytecodes::_fstore : | |
| 933 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 934 no_control_flow = false; break; | |
| 935 case Bytecodes::_fstore_0 : | |
| 936 case Bytecodes::_fstore_1 : | |
| 937 case Bytecodes::_fstore_2 : | |
| 938 case Bytecodes::_fstore_3 : | |
| 939 index = opcode - Bytecodes::_fstore_0; | |
| 940 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 941 no_control_flow = false; break; | |
| 942 case Bytecodes::_dstore : | |
| 943 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 944 no_control_flow = false; break; | |
| 945 case Bytecodes::_dstore_0 : | |
| 946 case Bytecodes::_dstore_1 : | |
| 947 case Bytecodes::_dstore_2 : | |
| 948 case Bytecodes::_dstore_3 : | |
| 949 index = opcode - Bytecodes::_dstore_0; | |
| 950 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 951 no_control_flow = false; break; | |
| 952 case Bytecodes::_astore : | |
| 953 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 954 no_control_flow = false; break; | |
| 955 case Bytecodes::_astore_0 : | |
| 956 case Bytecodes::_astore_1 : | |
| 957 case Bytecodes::_astore_2 : | |
| 958 case Bytecodes::_astore_3 : | |
| 959 index = opcode - Bytecodes::_astore_0; | |
| 960 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 961 no_control_flow = false; break; | |
| 962 case Bytecodes::_iastore : | |
| 963 type = current_frame.pop_stack( | |
| 964 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 965 type2 = current_frame.pop_stack( | |
| 966 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 967 atype = current_frame.pop_stack( | |
| 968 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 969 if (!atype.is_int_array()) { | |
| 6605 | 970 verify_error(ErrorContext::bad_type(bci, |
| 971 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 972 bad_type_msg, "iastore"); | |
| 0 | 973 return; |
| 974 } | |
| 975 no_control_flow = false; break; | |
| 976 case Bytecodes::_bastore : | |
| 977 type = current_frame.pop_stack( | |
| 978 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 979 type2 = current_frame.pop_stack( | |
| 980 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 981 atype = current_frame.pop_stack( | |
| 982 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 983 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 984 verify_error( |
| 985 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 986 bad_type_msg, "bastore"); | |
| 0 | 987 return; |
| 988 } | |
| 989 no_control_flow = false; break; | |
| 990 case Bytecodes::_castore : | |
| 991 current_frame.pop_stack( | |
| 992 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 993 current_frame.pop_stack( | |
| 994 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 995 atype = current_frame.pop_stack( | |
| 996 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 997 if (!atype.is_char_array()) { | |
| 6605 | 998 verify_error(ErrorContext::bad_type(bci, |
| 999 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 1000 bad_type_msg, "castore"); | |
| 0 | 1001 return; |
| 1002 } | |
| 1003 no_control_flow = false; break; | |
| 1004 case Bytecodes::_sastore : | |
| 1005 current_frame.pop_stack( | |
| 1006 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1007 current_frame.pop_stack( | |
| 1008 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1009 atype = current_frame.pop_stack( | |
| 1010 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1011 if (!atype.is_short_array()) { | |
| 6605 | 1012 verify_error(ErrorContext::bad_type(bci, |
| 1013 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 1014 bad_type_msg, "sastore"); | |
| 0 | 1015 return; |
| 1016 } | |
| 1017 no_control_flow = false; break; | |
| 1018 case Bytecodes::_lastore : | |
| 1019 current_frame.pop_stack_2( | |
| 1020 VerificationType::long2_type(), | |
| 1021 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1022 current_frame.pop_stack( | |
| 1023 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1024 atype = current_frame.pop_stack( | |
| 1025 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1026 if (!atype.is_long_array()) { | |
| 6605 | 1027 verify_error(ErrorContext::bad_type(bci, |
| 1028 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 1029 bad_type_msg, "lastore"); | |
| 0 | 1030 return; |
| 1031 } | |
| 1032 no_control_flow = false; break; | |
| 1033 case Bytecodes::_fastore : | |
| 1034 current_frame.pop_stack( | |
| 1035 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1036 current_frame.pop_stack | |
| 1037 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1038 atype = current_frame.pop_stack( | |
| 1039 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1040 if (!atype.is_float_array()) { | |
| 6605 | 1041 verify_error(ErrorContext::bad_type(bci, |
| 1042 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 1043 bad_type_msg, "fastore"); | |
| 0 | 1044 return; |
| 1045 } | |
| 1046 no_control_flow = false; break; | |
| 1047 case Bytecodes::_dastore : | |
| 1048 current_frame.pop_stack_2( | |
| 1049 VerificationType::double2_type(), | |
| 1050 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1051 current_frame.pop_stack( | |
| 1052 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1053 atype = current_frame.pop_stack( | |
| 1054 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1055 if (!atype.is_double_array()) { | |
| 6605 | 1056 verify_error(ErrorContext::bad_type(bci, |
| 1057 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 1058 bad_type_msg, "dastore"); | |
| 0 | 1059 return; |
| 1060 } | |
| 1061 no_control_flow = false; break; | |
| 1062 case Bytecodes::_aastore : | |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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parents:
1678
diff
changeset
|
1063 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1064 type2 = current_frame.pop_stack( |
| 1065 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1066 atype = current_frame.pop_stack( | |
| 1067 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1068 // more type-checking is done at runtime | |
| 1069 if (!atype.is_reference_array()) { | |
| 6605 | 1070 verify_error(ErrorContext::bad_type(bci, |
| 1071 current_frame.stack_top_ctx(), | |
| 1072 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 1073 bad_type_msg, "aastore"); | |
| 0 | 1074 return; |
| 1075 } | |
| 1076 // 4938384: relaxed constraint in JVMS 3nd edition. | |
| 1077 no_control_flow = false; break; | |
| 1078 case Bytecodes::_pop : | |
| 1079 current_frame.pop_stack( | |
| 1080 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1081 no_control_flow = false; break; | |
| 1082 case Bytecodes::_pop2 : | |
| 1083 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1084 if (type.is_category1()) { | |
| 1085 current_frame.pop_stack( | |
| 1086 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1087 } else if (type.is_category2_2nd()) { | |
| 1088 current_frame.pop_stack( | |
| 1089 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1090 } else { | |
| 6605 | 1091 /* Unreachable? Would need a category2_1st on TOS |
| 1092 * which does not appear possible. */ | |
| 1093 verify_error( | |
| 1094 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1095 bad_type_msg, "pop2"); | |
| 0 | 1096 return; |
| 1097 } | |
| 1098 no_control_flow = false; break; | |
| 1099 case Bytecodes::_dup : | |
| 1100 type = current_frame.pop_stack( | |
| 1101 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1102 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1103 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1104 no_control_flow = false; break; | |
| 1105 case Bytecodes::_dup_x1 : | |
| 1106 type = current_frame.pop_stack( | |
| 1107 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1108 type2 = current_frame.pop_stack( | |
| 1109 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1110 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1111 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1112 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1113 no_control_flow = false; break; | |
| 1114 case Bytecodes::_dup_x2 : | |
| 1115 { | |
| 1116 VerificationType type3; | |
| 1117 type = current_frame.pop_stack( | |
| 1118 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1119 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1120 if (type2.is_category1()) { | |
| 1121 type3 = current_frame.pop_stack( | |
| 1122 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1123 } else if (type2.is_category2_2nd()) { | |
| 1124 type3 = current_frame.pop_stack( | |
| 1125 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1126 } else { | |
| 6605 | 1127 /* Unreachable? Would need a category2_1st at stack depth 2 with |
| 1128 * a category1 on TOS which does not appear possible. */ | |
| 1129 verify_error(ErrorContext::bad_type( | |
| 1130 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
| 0 | 1131 return; |
| 1132 } | |
| 1133 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1134 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1135 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1136 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1137 no_control_flow = false; break; | |
| 1138 } | |
| 1139 case Bytecodes::_dup2 : | |
| 1140 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1141 if (type.is_category1()) { | |
| 1142 type2 = current_frame.pop_stack( | |
| 1143 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1144 } else if (type.is_category2_2nd()) { | |
| 1145 type2 = current_frame.pop_stack( | |
| 1146 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1147 } else { | |
| 6605 | 1148 /* Unreachable? Would need a category2_1st on TOS which does not |
| 1149 * appear possible. */ | |
| 1150 verify_error( | |
| 1151 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1152 bad_type_msg, "dup2"); | |
| 0 | 1153 return; |
| 1154 } | |
| 1155 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1156 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1157 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1158 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1159 no_control_flow = false; break; | |
| 1160 case Bytecodes::_dup2_x1 : | |
| 1161 { | |
| 1162 VerificationType type3; | |
| 1163 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1164 if (type.is_category1()) { | |
| 1165 type2 = current_frame.pop_stack( | |
| 1166 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 6605 | 1167 } else if (type.is_category2_2nd()) { |
| 1168 type2 = current_frame.pop_stack( | |
| 1169 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 0 | 1170 } else { |
| 6605 | 1171 /* Unreachable? Would need a category2_1st on TOS which does |
| 1172 * not appear possible. */ | |
| 1173 verify_error( | |
| 1174 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1175 bad_type_msg, "dup2_x1"); | |
| 0 | 1176 return; |
| 1177 } | |
| 1178 type3 = current_frame.pop_stack( | |
| 1179 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1180 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1181 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1182 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1183 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1184 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1185 no_control_flow = false; break; | |
| 1186 } | |
| 1187 case Bytecodes::_dup2_x2 : | |
| 1188 { | |
| 1189 VerificationType type3, type4; | |
| 1190 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1191 if (type.is_category1()) { | |
| 1192 type2 = current_frame.pop_stack( | |
| 1193 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1194 } else if (type.is_category2_2nd()) { | |
| 1195 type2 = current_frame.pop_stack( | |
| 1196 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1197 } else { | |
| 6605 | 1198 /* Unreachable? Would need a category2_1st on TOS which does |
| 1199 * not appear possible. */ | |
| 1200 verify_error( | |
| 1201 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1202 bad_type_msg, "dup2_x2"); | |
| 0 | 1203 return; |
| 1204 } | |
| 1205 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1206 if (type3.is_category1()) { | |
| 1207 type4 = current_frame.pop_stack( | |
| 1208 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1209 } else if (type3.is_category2_2nd()) { | |
| 1210 type4 = current_frame.pop_stack( | |
| 1211 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1212 } else { | |
| 6605 | 1213 /* Unreachable? Would need a category2_1st on TOS after popping |
| 1214 * a long/double or two category 1's, which does not | |
| 1215 * appear possible. */ | |
| 1216 verify_error( | |
| 1217 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1218 bad_type_msg, "dup2_x2"); | |
| 0 | 1219 return; |
| 1220 } | |
| 1221 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1222 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1223 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
| 1224 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1225 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1226 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1227 no_control_flow = false; break; | |
| 1228 } | |
| 1229 case Bytecodes::_swap : | |
| 1230 type = current_frame.pop_stack( | |
| 1231 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1232 type2 = current_frame.pop_stack( | |
| 1233 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1234 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1235 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1236 no_control_flow = false; break; | |
| 1237 case Bytecodes::_iadd : | |
| 1238 case Bytecodes::_isub : | |
| 1239 case Bytecodes::_imul : | |
| 1240 case Bytecodes::_idiv : | |
| 1241 case Bytecodes::_irem : | |
| 1242 case Bytecodes::_ishl : | |
| 1243 case Bytecodes::_ishr : | |
| 1244 case Bytecodes::_iushr : | |
| 1245 case Bytecodes::_ior : | |
| 1246 case Bytecodes::_ixor : | |
| 1247 case Bytecodes::_iand : | |
| 1248 current_frame.pop_stack( | |
| 1249 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1250 // fall through | |
| 1251 case Bytecodes::_ineg : | |
| 1252 current_frame.pop_stack( | |
| 1253 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1254 current_frame.push_stack( | |
| 1255 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1256 no_control_flow = false; break; | |
| 1257 case Bytecodes::_ladd : | |
| 1258 case Bytecodes::_lsub : | |
| 1259 case Bytecodes::_lmul : | |
| 1260 case Bytecodes::_ldiv : | |
| 1261 case Bytecodes::_lrem : | |
| 1262 case Bytecodes::_land : | |
| 1263 case Bytecodes::_lor : | |
| 1264 case Bytecodes::_lxor : | |
| 1265 current_frame.pop_stack_2( | |
| 1266 VerificationType::long2_type(), | |
| 1267 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1268 // fall through | |
| 1269 case Bytecodes::_lneg : | |
| 1270 current_frame.pop_stack_2( | |
| 1271 VerificationType::long2_type(), | |
| 1272 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1273 current_frame.push_stack_2( | |
| 1274 VerificationType::long_type(), | |
| 1275 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1276 no_control_flow = false; break; | |
| 1277 case Bytecodes::_lshl : | |
| 1278 case Bytecodes::_lshr : | |
| 1279 case Bytecodes::_lushr : | |
| 1280 current_frame.pop_stack( | |
| 1281 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1282 current_frame.pop_stack_2( | |
| 1283 VerificationType::long2_type(), | |
| 1284 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1285 current_frame.push_stack_2( | |
| 1286 VerificationType::long_type(), | |
| 1287 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1288 no_control_flow = false; break; | |
| 1289 case Bytecodes::_fadd : | |
| 1290 case Bytecodes::_fsub : | |
| 1291 case Bytecodes::_fmul : | |
| 1292 case Bytecodes::_fdiv : | |
| 1293 case Bytecodes::_frem : | |
| 1294 current_frame.pop_stack( | |
| 1295 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1296 // fall through | |
| 1297 case Bytecodes::_fneg : | |
| 1298 current_frame.pop_stack( | |
| 1299 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1300 current_frame.push_stack( | |
| 1301 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1302 no_control_flow = false; break; | |
| 1303 case Bytecodes::_dadd : | |
| 1304 case Bytecodes::_dsub : | |
| 1305 case Bytecodes::_dmul : | |
| 1306 case Bytecodes::_ddiv : | |
| 1307 case Bytecodes::_drem : | |
| 1308 current_frame.pop_stack_2( | |
| 1309 VerificationType::double2_type(), | |
| 1310 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1311 // fall through | |
| 1312 case Bytecodes::_dneg : | |
| 1313 current_frame.pop_stack_2( | |
| 1314 VerificationType::double2_type(), | |
| 1315 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1316 current_frame.push_stack_2( | |
| 1317 VerificationType::double_type(), | |
| 1318 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1319 no_control_flow = false; break; | |
| 1320 case Bytecodes::_iinc : | |
| 1321 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 1322 no_control_flow = false; break; | |
| 1323 case Bytecodes::_i2l : | |
| 1324 type = current_frame.pop_stack( | |
| 1325 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1326 current_frame.push_stack_2( | |
| 1327 VerificationType::long_type(), | |
| 1328 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1329 no_control_flow = false; break; | |
| 1330 case Bytecodes::_l2i : | |
| 1331 current_frame.pop_stack_2( | |
| 1332 VerificationType::long2_type(), | |
| 1333 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1334 current_frame.push_stack( | |
| 1335 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1336 no_control_flow = false; break; | |
| 1337 case Bytecodes::_i2f : | |
| 1338 current_frame.pop_stack( | |
| 1339 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1340 current_frame.push_stack( | |
| 1341 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1342 no_control_flow = false; break; | |
| 1343 case Bytecodes::_i2d : | |
| 1344 current_frame.pop_stack( | |
| 1345 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1346 current_frame.push_stack_2( | |
| 1347 VerificationType::double_type(), | |
| 1348 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1349 no_control_flow = false; break; | |
| 1350 case Bytecodes::_l2f : | |
| 1351 current_frame.pop_stack_2( | |
| 1352 VerificationType::long2_type(), | |
| 1353 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1354 current_frame.push_stack( | |
| 1355 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1356 no_control_flow = false; break; | |
| 1357 case Bytecodes::_l2d : | |
| 1358 current_frame.pop_stack_2( | |
| 1359 VerificationType::long2_type(), | |
| 1360 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1361 current_frame.push_stack_2( | |
| 1362 VerificationType::double_type(), | |
| 1363 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1364 no_control_flow = false; break; | |
| 1365 case Bytecodes::_f2i : | |
| 1366 current_frame.pop_stack( | |
| 1367 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1368 current_frame.push_stack( | |
| 1369 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1370 no_control_flow = false; break; | |
| 1371 case Bytecodes::_f2l : | |
| 1372 current_frame.pop_stack( | |
| 1373 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1374 current_frame.push_stack_2( | |
| 1375 VerificationType::long_type(), | |
| 1376 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1377 no_control_flow = false; break; | |
| 1378 case Bytecodes::_f2d : | |
| 1379 current_frame.pop_stack( | |
| 1380 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1381 current_frame.push_stack_2( | |
| 1382 VerificationType::double_type(), | |
| 1383 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1384 no_control_flow = false; break; | |
| 1385 case Bytecodes::_d2i : | |
| 1386 current_frame.pop_stack_2( | |
| 1387 VerificationType::double2_type(), | |
| 1388 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1389 current_frame.push_stack( | |
| 1390 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1391 no_control_flow = false; break; | |
| 1392 case Bytecodes::_d2l : | |
| 1393 current_frame.pop_stack_2( | |
| 1394 VerificationType::double2_type(), | |
| 1395 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1396 current_frame.push_stack_2( | |
| 1397 VerificationType::long_type(), | |
| 1398 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1399 no_control_flow = false; break; | |
| 1400 case Bytecodes::_d2f : | |
| 1401 current_frame.pop_stack_2( | |
| 1402 VerificationType::double2_type(), | |
| 1403 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1404 current_frame.push_stack( | |
| 1405 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1406 no_control_flow = false; break; | |
| 1407 case Bytecodes::_i2b : | |
| 1408 case Bytecodes::_i2c : | |
| 1409 case Bytecodes::_i2s : | |
| 1410 current_frame.pop_stack( | |
| 1411 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1412 current_frame.push_stack( | |
| 1413 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1414 no_control_flow = false; break; | |
| 1415 case Bytecodes::_lcmp : | |
| 1416 current_frame.pop_stack_2( | |
| 1417 VerificationType::long2_type(), | |
| 1418 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1419 current_frame.pop_stack_2( | |
| 1420 VerificationType::long2_type(), | |
| 1421 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1422 current_frame.push_stack( | |
| 1423 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1424 no_control_flow = false; break; | |
| 1425 case Bytecodes::_fcmpl : | |
| 1426 case Bytecodes::_fcmpg : | |
| 1427 current_frame.pop_stack( | |
| 1428 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1429 current_frame.pop_stack( | |
| 1430 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1431 current_frame.push_stack( | |
| 1432 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1433 no_control_flow = false; break; | |
| 1434 case Bytecodes::_dcmpl : | |
| 1435 case Bytecodes::_dcmpg : | |
| 1436 current_frame.pop_stack_2( | |
| 1437 VerificationType::double2_type(), | |
| 1438 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1439 current_frame.pop_stack_2( | |
| 1440 VerificationType::double2_type(), | |
| 1441 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1442 current_frame.push_stack( | |
| 1443 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1444 no_control_flow = false; break; | |
| 1445 case Bytecodes::_if_icmpeq: | |
| 1446 case Bytecodes::_if_icmpne: | |
| 1447 case Bytecodes::_if_icmplt: | |
| 1448 case Bytecodes::_if_icmpge: | |
| 1449 case Bytecodes::_if_icmpgt: | |
| 1450 case Bytecodes::_if_icmple: | |
| 1451 current_frame.pop_stack( | |
| 1452 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1453 // fall through | |
| 1454 case Bytecodes::_ifeq: | |
| 1455 case Bytecodes::_ifne: | |
| 1456 case Bytecodes::_iflt: | |
| 1457 case Bytecodes::_ifge: | |
| 1458 case Bytecodes::_ifgt: | |
| 1459 case Bytecodes::_ifle: | |
| 1460 current_frame.pop_stack( | |
| 1461 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1462 target = bcs.dest(); | |
| 1463 stackmap_table.check_jump_target( | |
| 1464 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1465 no_control_flow = false; break; | |
| 1466 case Bytecodes::_if_acmpeq : | |
| 1467 case Bytecodes::_if_acmpne : | |
| 1468 current_frame.pop_stack( | |
| 1469 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1470 // fall through | |
| 1471 case Bytecodes::_ifnull : | |
| 1472 case Bytecodes::_ifnonnull : | |
| 1473 current_frame.pop_stack( | |
| 1474 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1475 target = bcs.dest(); | |
| 1476 stackmap_table.check_jump_target | |
| 1477 (¤t_frame, target, CHECK_VERIFY(this)); | |
| 1478 no_control_flow = false; break; | |
| 1479 case Bytecodes::_goto : | |
| 1480 target = bcs.dest(); | |
| 1481 stackmap_table.check_jump_target( | |
| 1482 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1483 no_control_flow = true; break; | |
| 1484 case Bytecodes::_goto_w : | |
| 1485 target = bcs.dest_w(); | |
| 1486 stackmap_table.check_jump_target( | |
| 1487 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1488 no_control_flow = true; break; | |
| 1489 case Bytecodes::_tableswitch : | |
| 1490 case Bytecodes::_lookupswitch : | |
| 1491 verify_switch( | |
| 1492 &bcs, code_length, code_data, ¤t_frame, | |
| 1493 &stackmap_table, CHECK_VERIFY(this)); | |
| 1494 no_control_flow = true; break; | |
| 1495 case Bytecodes::_ireturn : | |
| 1496 type = current_frame.pop_stack( | |
| 1497 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 6605 | 1498 verify_return_value(return_type, type, bci, |
| 1499 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1500 no_control_flow = true; break; |
| 1501 case Bytecodes::_lreturn : | |
| 1502 type2 = current_frame.pop_stack( | |
| 1503 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1504 type = current_frame.pop_stack( | |
| 1505 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 6605 | 1506 verify_return_value(return_type, type, bci, |
| 1507 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1508 no_control_flow = true; break; |
| 1509 case Bytecodes::_freturn : | |
| 1510 type = current_frame.pop_stack( | |
| 1511 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 6605 | 1512 verify_return_value(return_type, type, bci, |
| 1513 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1514 no_control_flow = true; break; |
| 1515 case Bytecodes::_dreturn : | |
| 1516 type2 = current_frame.pop_stack( | |
| 1517 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1518 type = current_frame.pop_stack( | |
| 1519 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 6605 | 1520 verify_return_value(return_type, type, bci, |
| 1521 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1522 no_control_flow = true; break; |
| 1523 case Bytecodes::_areturn : | |
| 1524 type = current_frame.pop_stack( | |
| 1525 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 6605 | 1526 verify_return_value(return_type, type, bci, |
| 1527 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1528 no_control_flow = true; break; |
| 1529 case Bytecodes::_return : | |
| 1530 if (return_type != VerificationType::bogus_type()) { | |
| 6605 | 1531 verify_error(ErrorContext::bad_code(bci), |
| 1532 "Method expects a return value"); | |
| 0 | 1533 return; |
| 1534 } | |
| 1535 // Make sure "this" has been initialized if current method is an | |
| 1536 // <init> | |
| 1537 if (_method->name() == vmSymbols::object_initializer_name() && | |
| 1538 current_frame.flag_this_uninit()) { | |
| 6605 | 1539 verify_error(ErrorContext::bad_code(bci), |
| 1540 "Constructor must call super() or this() " | |
| 1541 "before return"); | |
| 0 | 1542 return; |
| 1543 } | |
| 1544 no_control_flow = true; break; | |
| 1545 case Bytecodes::_getstatic : | |
| 1546 case Bytecodes::_putstatic : | |
| 1547 case Bytecodes::_getfield : | |
| 1548 case Bytecodes::_putfield : | |
| 1549 verify_field_instructions( | |
| 1550 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
| 1551 no_control_flow = false; break; | |
| 1552 case Bytecodes::_invokevirtual : | |
| 1553 case Bytecodes::_invokespecial : | |
| 1554 case Bytecodes::_invokestatic : | |
| 1555 verify_invoke_instructions( | |
| 1556 &bcs, code_length, ¤t_frame, | |
| 1557 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1558 no_control_flow = false; break; | |
| 1559 case Bytecodes::_invokeinterface : | |
|
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be93aad57795
6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
1560 case Bytecodes::_invokedynamic : |
| 0 | 1561 verify_invoke_instructions( |
| 1562 &bcs, code_length, ¤t_frame, | |
| 1563 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1564 no_control_flow = false; break; | |
| 1565 case Bytecodes::_new : | |
| 1566 { | |
| 1565 | 1567 index = bcs.get_index_u2(); |
| 6605 | 1568 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1569 VerificationType new_class_type = |
| 1570 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1571 if (!new_class_type.is_object()) { | |
| 6605 | 1572 verify_error(ErrorContext::bad_type(bci, |
| 1573 TypeOrigin::cp(index, new_class_type)), | |
| 1574 "Illegal new instruction"); | |
| 0 | 1575 return; |
| 1576 } | |
| 1577 type = VerificationType::uninitialized_type(bci); | |
| 1578 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1579 no_control_flow = false; break; | |
| 1580 } | |
| 1581 case Bytecodes::_newarray : | |
| 1582 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
| 1583 current_frame.pop_stack( | |
| 1584 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1585 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1586 no_control_flow = false; break; | |
| 1587 case Bytecodes::_anewarray : | |
| 1588 verify_anewarray( | |
| 6605 | 1589 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
| 0 | 1590 no_control_flow = false; break; |
| 1591 case Bytecodes::_arraylength : | |
| 1592 type = current_frame.pop_stack( | |
| 1593 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
|
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diff
changeset
|
1594 if (!(type.is_null() || type.is_array())) { |
| 6605 | 1595 verify_error(ErrorContext::bad_type( |
| 1596 bci, current_frame.stack_top_ctx()), | |
| 1597 bad_type_msg, "arraylength"); | |
| 0 | 1598 } |
| 1599 current_frame.push_stack( | |
| 1600 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1601 no_control_flow = false; break; | |
| 1602 case Bytecodes::_checkcast : | |
| 1603 { | |
| 1565 | 1604 index = bcs.get_index_u2(); |
| 6605 | 1605 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
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diff
changeset
|
1606 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1607 VerificationType klass_type = cp_index_to_type( |
| 1608 index, cp, CHECK_VERIFY(this)); | |
| 1609 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
| 1610 no_control_flow = false; break; | |
| 1611 } | |
| 1612 case Bytecodes::_instanceof : { | |
| 1565 | 1613 index = bcs.get_index_u2(); |
| 6605 | 1614 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
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|
1615 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1616 current_frame.push_stack( |
| 1617 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1618 no_control_flow = false; break; | |
| 1619 } | |
| 1620 case Bytecodes::_monitorenter : | |
| 1621 case Bytecodes::_monitorexit : | |
| 1622 current_frame.pop_stack( | |
| 1623 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1624 no_control_flow = false; break; | |
| 1625 case Bytecodes::_multianewarray : | |
| 1626 { | |
| 1565 | 1627 index = bcs.get_index_u2(); |
| 0 | 1628 u2 dim = *(bcs.bcp()+3); |
| 6605 | 1629 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1630 VerificationType new_array_type = |
| 1631 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1632 if (!new_array_type.is_array()) { | |
| 6605 | 1633 verify_error(ErrorContext::bad_type(bci, |
| 1634 TypeOrigin::cp(index, new_array_type)), | |
| 1635 "Illegal constant pool index in multianewarray instruction"); | |
| 0 | 1636 return; |
| 1637 } | |
| 1638 if (dim < 1 || new_array_type.dimensions() < dim) { | |
| 6605 | 1639 verify_error(ErrorContext::bad_code(bci), |
| 1640 "Illegal dimension in multianewarray instruction: %d", dim); | |
| 0 | 1641 return; |
| 1642 } | |
| 1643 for (int i = 0; i < dim; i++) { | |
| 1644 current_frame.pop_stack( | |
| 1645 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1646 } | |
| 1647 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 1648 no_control_flow = false; break; | |
| 1649 } | |
| 1650 case Bytecodes::_athrow : | |
| 1651 type = VerificationType::reference_type( | |
| 1652 vmSymbols::java_lang_Throwable()); | |
| 1653 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
| 1654 no_control_flow = true; break; | |
| 1655 default: | |
| 1656 // We only need to check the valid bytecodes in class file. | |
| 1657 // And jsr and ret are not in the new class file format in JDK1.5. | |
| 6605 | 1658 verify_error(ErrorContext::bad_code(bci), |
| 1659 "Bad instruction: %02x", opcode); | |
| 0 | 1660 no_control_flow = false; |
| 1661 return; | |
| 1662 } // end switch | |
| 1663 } // end Merge with the next instruction | |
| 1664 | |
| 1665 // Look for possible jump target in exception handlers and see if it | |
| 1666 // matches current_frame | |
| 1667 if (bci >= ex_min && bci < ex_max) { | |
| 1668 verify_exception_handler_targets( | |
| 1669 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
| 1670 } | |
| 1671 } // end while | |
| 1672 | |
| 1673 // Make sure that control flow does not fall through end of the method | |
| 1674 if (!no_control_flow) { | |
| 6605 | 1675 verify_error(ErrorContext::bad_code(code_length), |
| 1676 "Control flow falls through code end"); | |
| 0 | 1677 return; |
| 1678 } | |
| 1679 } | |
| 1680 | |
|
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1681 #undef bad_type_message |
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1682 |
| 0 | 1683 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { |
| 1684 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
| 1685 memset(code_data, 0, sizeof(char) * code_length); | |
| 1686 RawBytecodeStream bcs(m); | |
| 1687 | |
| 1688 while (!bcs.is_last_bytecode()) { | |
| 1689 if (bcs.raw_next() != Bytecodes::_illegal) { | |
| 1690 int bci = bcs.bci(); | |
| 1565 | 1691 if (bcs.raw_code() == Bytecodes::_new) { |
| 0 | 1692 code_data[bci] = NEW_OFFSET; |
| 1693 } else { | |
| 1694 code_data[bci] = BYTECODE_OFFSET; | |
| 1695 } | |
| 1696 } else { | |
| 6605 | 1697 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
| 0 | 1698 return NULL; |
| 1699 } | |
| 1700 } | |
| 1701 | |
| 1702 return code_data; | |
| 1703 } | |
| 1704 | |
| 1705 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
|
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1706 ExceptionTable exhandlers(_method()); |
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1707 int exlength = exhandlers.length(); |
| 0 | 1708 constantPoolHandle cp (THREAD, _method->constants()); |
| 1709 | |
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1710 for(int i = 0; i < exlength; i++) { |
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1711 //reacquire the table in case a GC happened |
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1712 ExceptionTable exhandlers(_method()); |
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1713 u2 start_pc = exhandlers.start_pc(i); |
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1714 u2 end_pc = exhandlers.end_pc(i); |
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1715 u2 handler_pc = exhandlers.handler_pc(i); |
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1716 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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1717 class_format_error("Illegal exception table start_pc %d", start_pc); |
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1718 return; |
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1719 } |
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1720 if (end_pc != code_length) { // special case: end_pc == code_length |
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1721 if (end_pc > code_length || code_data[end_pc] == 0) { |
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1722 class_format_error("Illegal exception table end_pc %d", end_pc); |
| 0 | 1723 return; |
| 1724 } | |
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1725 } |
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1726 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
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1727 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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1728 return; |
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1729 } |
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1730 int catch_type_index = exhandlers.catch_type_index(i); |
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1731 if (catch_type_index != 0) { |
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1732 VerificationType catch_type = cp_index_to_type( |
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1733 catch_type_index, cp, CHECK_VERIFY(this)); |
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1734 VerificationType throwable = |
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1735 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1736 bool is_subclass = throwable.is_assignable_from( |
| 18052 | 1737 catch_type, this, false, CHECK_VERIFY(this)); |
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1738 if (!is_subclass) { |
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1739 // 4286534: should throw VerifyError according to recent spec change |
| 6605 | 1740 verify_error(ErrorContext::bad_type(handler_pc, |
| 1741 TypeOrigin::cp(catch_type_index, catch_type), | |
| 1742 TypeOrigin::implicit(throwable)), | |
| 1743 "Catch type is not a subclass " | |
| 1744 "of Throwable in exception handler %d", handler_pc); | |
| 0 | 1745 return; |
| 1746 } | |
| 1747 } | |
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1748 if (start_pc < min) min = start_pc; |
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1749 if (end_pc > max) max = end_pc; |
| 0 | 1750 } |
| 1751 } | |
| 1752 | |
| 1753 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
| 1754 int localvariable_table_length = _method()->localvariable_table_length(); | |
| 1755 if (localvariable_table_length > 0) { | |
| 1756 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
| 1757 for (int i = 0; i < localvariable_table_length; i++) { | |
| 1758 u2 start_bci = table[i].start_bci; | |
| 1759 u2 length = table[i].length; | |
| 1760 | |
| 1761 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
| 1762 class_format_error( | |
| 1763 "Illegal local variable table start_pc %d", start_bci); | |
| 1764 return; | |
| 1765 } | |
| 1766 u4 end_bci = (u4)(start_bci + length); | |
| 1767 if (end_bci != code_length) { | |
| 1768 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
| 1769 class_format_error( "Illegal local variable table length %d", length); | |
| 1770 return; | |
| 1771 } | |
| 1772 } | |
| 1773 } | |
| 1774 } | |
| 1775 } | |
| 1776 | |
| 1777 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
| 1778 StackMapFrame* current_frame, | |
| 1779 StackMapTable* stackmap_table, | |
| 1780 bool no_control_flow, TRAPS) { | |
| 1781 if (stackmap_index < stackmap_table->get_frame_count()) { | |
| 1782 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
| 1783 if (no_control_flow && this_offset > bci) { | |
| 6605 | 1784 verify_error(ErrorContext::missing_stackmap(bci), |
| 1785 "Expecting a stack map frame"); | |
| 0 | 1786 return 0; |
| 1787 } | |
| 1788 if (this_offset == bci) { | |
| 6605 | 1789 ErrorContext ctx; |
| 0 | 1790 // See if current stack map can be assigned to the frame in table. |
| 1791 // current_frame is the stackmap frame got from the last instruction. | |
| 1792 // If matched, current_frame will be updated by this method. | |
| 6605 | 1793 bool matches = stackmap_table->match_stackmap( |
| 0 | 1794 current_frame, this_offset, stackmap_index, |
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1795 !no_control_flow, true, false, &ctx, CHECK_VERIFY_(this, 0)); |
| 6605 | 1796 if (!matches) { |
| 0 | 1797 // report type error |
| 6605 | 1798 verify_error(ctx, "Instruction type does not match stack map"); |
| 0 | 1799 return 0; |
| 1800 } | |
| 1801 stackmap_index++; | |
| 1802 } else if (this_offset < bci) { | |
| 1803 // current_offset should have met this_offset. | |
| 1804 class_format_error("Bad stack map offset %d", this_offset); | |
| 1805 return 0; | |
| 1806 } | |
| 1807 } else if (no_control_flow) { | |
| 6605 | 1808 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
| 0 | 1809 return 0; |
| 1810 } | |
| 1811 return stackmap_index; | |
| 1812 } | |
| 1813 | |
| 1814 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 1815 StackMapTable* stackmap_table, TRAPS) { | |
| 1816 constantPoolHandle cp (THREAD, _method->constants()); | |
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1817 ExceptionTable exhandlers(_method()); |
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1818 int exlength = exhandlers.length(); |
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1819 for(int i = 0; i < exlength; i++) { |
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1820 //reacquire the table in case a GC happened |
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1821 ExceptionTable exhandlers(_method()); |
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1822 u2 start_pc = exhandlers.start_pc(i); |
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1823 u2 end_pc = exhandlers.end_pc(i); |
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1824 u2 handler_pc = exhandlers.handler_pc(i); |
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1825 int catch_type_index = exhandlers.catch_type_index(i); |
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1826 if(bci >= start_pc && bci < end_pc) { |
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1827 u1 flags = current_frame->flags(); |
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1828 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1829 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1830 if (catch_type_index != 0) { |
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1831 // We know that this index refers to a subclass of Throwable |
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1832 VerificationType catch_type = cp_index_to_type( |
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1833 catch_type_index, cp, CHECK_VERIFY(this)); |
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1834 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1835 } else { |
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1836 VerificationType throwable = |
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1837 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1838 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1839 } |
| 6605 | 1840 ErrorContext ctx; |
| 1841 bool matches = stackmap_table->match_stackmap( | |
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1842 new_frame, handler_pc, true, false, true, &ctx, CHECK_VERIFY(this)); |
| 6605 | 1843 if (!matches) { |
| 1844 verify_error(ctx, "Stack map does not match the one at " | |
| 1845 "exception handler %d", handler_pc); | |
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1846 return; |
| 0 | 1847 } |
| 1848 } | |
| 1849 } | |
| 1850 } | |
| 1851 | |
| 6605 | 1852 void ClassVerifier::verify_cp_index( |
| 1853 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
| 0 | 1854 int nconstants = cp->length(); |
| 1855 if ((index <= 0) || (index >= nconstants)) { | |
| 6605 | 1856 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1857 "Illegal constant pool index %d in class %s", | |
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1858 index, cp->pool_holder()->external_name()); |
| 0 | 1859 return; |
| 1860 } | |
| 1861 } | |
| 1862 | |
| 1863 void ClassVerifier::verify_cp_type( | |
| 6605 | 1864 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
| 0 | 1865 |
| 1866 // In some situations, bytecode rewriting may occur while we're verifying. | |
| 1867 // In this case, a constant pool cache exists and some indices refer to that | |
| 1570 | 1868 // instead. Be sure we don't pick up such indices by accident. |
| 1869 // We must check was_recursively_verified() before we get here. | |
| 1870 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
| 0 | 1871 |
| 6605 | 1872 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
| 0 | 1873 unsigned int tag = cp->tag_at(index).value(); |
| 1874 if ((types & (1 << tag)) == 0) { | |
| 6605 | 1875 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 0 | 1876 "Illegal type at constant pool entry %d in class %s", |
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1877 index, cp->pool_holder()->external_name()); |
| 0 | 1878 return; |
| 1879 } | |
| 1880 } | |
| 1881 | |
| 1882 void ClassVerifier::verify_cp_class_type( | |
| 6605 | 1883 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
| 1884 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1885 constantTag tag = cp->tag_at(index); |
| 1886 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 6605 | 1887 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1888 "Illegal type at constant pool entry %d in class %s", | |
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1889 index, cp->pool_holder()->external_name()); |
| 0 | 1890 return; |
| 1891 } | |
| 1892 } | |
| 1893 | |
| 6605 | 1894 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
| 1895 stringStream ss; | |
| 0 | 1896 |
| 6605 | 1897 ctx.reset_frames(); |
| 0 | 1898 _exception_type = vmSymbols::java_lang_VerifyError(); |
| 6605 | 1899 _error_context = ctx; |
| 0 | 1900 va_list va; |
| 6605 | 1901 va_start(va, msg); |
| 1902 ss.vprint(msg, va); | |
| 0 | 1903 va_end(va); |
| 6605 | 1904 _message = ss.as_string(); |
| 1905 #ifdef ASSERT | |
| 1906 ResourceMark rm; | |
| 1907 const char* exception_name = _exception_type->as_C_string(); | |
| 1908 Exceptions::debug_check_abort(exception_name, NULL); | |
| 1909 #endif // ndef ASSERT | |
| 0 | 1910 } |
| 1911 | |
| 1912 void ClassVerifier::class_format_error(const char* msg, ...) { | |
| 6605 | 1913 stringStream ss; |
| 0 | 1914 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
| 1915 va_list va; | |
| 1916 va_start(va, msg); | |
| 6605 | 1917 ss.vprint(msg, va); |
| 0 | 1918 va_end(va); |
| 6605 | 1919 if (!_method.is_null()) { |
| 1920 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
| 1921 } | |
| 1922 _message = ss.as_string(); | |
| 0 | 1923 } |
| 1924 | |
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1925 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
| 0 | 1926 // Get current loader and protection domain first. |
| 1927 oop loader = current_class()->class_loader(); | |
| 1928 oop protection_domain = current_class()->protection_domain(); | |
| 1929 | |
| 1930 return SystemDictionary::resolve_or_fail( | |
| 1931 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
| 1932 true, CHECK_NULL); | |
| 1933 } | |
| 1934 | |
| 1935 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1936 Klass* target_class, |
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1937 Symbol* field_name, |
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1938 Symbol* field_sig, |
| 0 | 1939 bool is_method) { |
| 1940 No_Safepoint_Verifier nosafepoint; | |
| 1941 | |
| 1942 // If target class isn't a super class of this class, we don't worry about this case | |
| 1943 if (!this_class->is_subclass_of(target_class)) { | |
| 1944 return false; | |
| 1945 } | |
| 1946 // Check if the specified method or field is protected | |
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1947 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
| 0 | 1948 fieldDescriptor fd; |
| 1949 if (is_method) { | |
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1950 Method* m = target_instance->uncached_lookup_method(field_name, field_sig, Klass::normal); |
| 0 | 1951 if (m != NULL && m->is_protected()) { |
| 1952 if (!this_class->is_same_class_package(m->method_holder())) { | |
| 1953 return true; | |
| 1954 } | |
| 1955 } | |
| 1956 } else { | |
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1957 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
| 6605 | 1958 if (member_klass != NULL && fd.is_protected()) { |
| 0 | 1959 if (!this_class->is_same_class_package(member_klass)) { |
| 1960 return true; | |
| 1961 } | |
| 1962 } | |
| 1963 } | |
| 1964 return false; | |
| 1965 } | |
| 1966 | |
| 1967 void ClassVerifier::verify_ldc( | |
| 6605 | 1968 int opcode, u2 index, StackMapFrame* current_frame, |
| 1969 constantPoolHandle cp, u2 bci, TRAPS) { | |
| 1970 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1971 constantTag tag = cp->tag_at(index); |
| 1972 unsigned int types; | |
| 1973 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
|
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1974 if (!tag.is_unresolved_klass()) { |
| 0 | 1975 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
| 1602 | 1976 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
| 1977 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
| 1978 // Note: The class file parser already verified the legality of | |
| 1979 // MethodHandle and MethodType constants. | |
| 6605 | 1980 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1981 } |
| 1982 } else { | |
| 1983 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
| 1984 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
| 6605 | 1985 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1986 } |
|
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1987 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
|
1955
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1988 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1989 } else if (tag.is_string()) { |
| 0 | 1990 current_frame->push_stack( |
| 1991 VerificationType::reference_type( | |
| 1992 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
| 1993 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1994 current_frame->push_stack( | |
| 1995 VerificationType::reference_type( | |
| 1996 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
| 1997 } else if (tag.is_int()) { | |
| 1998 current_frame->push_stack( | |
| 1999 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2000 } else if (tag.is_float()) { | |
| 2001 current_frame->push_stack( | |
| 2002 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2003 } else if (tag.is_double()) { | |
| 2004 current_frame->push_stack_2( | |
| 2005 VerificationType::double_type(), | |
| 2006 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2007 } else if (tag.is_long()) { | |
| 2008 current_frame->push_stack_2( | |
| 2009 VerificationType::long_type(), | |
| 2010 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1602 | 2011 } else if (tag.is_method_handle()) { |
| 2012 current_frame->push_stack( | |
| 2013 VerificationType::reference_type( | |
| 2460 | 2014 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
| 1602 | 2015 } else if (tag.is_method_type()) { |
| 2016 current_frame->push_stack( | |
| 2017 VerificationType::reference_type( | |
| 2460 | 2018 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
| 0 | 2019 } else { |
| 6605 | 2020 /* Unreachable? verify_cp_type has already validated the cp type. */ |
| 2021 verify_error( | |
| 2022 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
| 0 | 2023 return; |
| 2024 } | |
| 2025 } | |
| 2026 | |
| 2027 void ClassVerifier::verify_switch( | |
| 2028 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 2029 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
| 2030 int bci = bcs->bci(); | |
| 2031 address bcp = bcs->bcp(); | |
| 2032 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
| 2033 | |
|
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2034 if (_klass->major_version() < NONZERO_PADDING_BYTES_IN_SWITCH_MAJOR_VERSION) { |
|
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2035 // 4639449 & 4647081: padding bytes must be 0 |
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2036 u2 padding_offset = 1; |
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2037 while ((bcp + padding_offset) < aligned_bcp) { |
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2038 if(*(bcp + padding_offset) != 0) { |
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2039 verify_error(ErrorContext::bad_code(bci), |
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2040 "Nonzero padding byte in lookswitch or tableswitch"); |
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2041 return; |
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2042 } |
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2043 padding_offset++; |
| 0 | 2044 } |
| 2045 } | |
|
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2046 |
| 0 | 2047 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); |
| 2048 int keys, delta; | |
| 2049 current_frame->pop_stack( | |
| 2050 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1565 | 2051 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
| 0 | 2052 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
| 2053 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
| 2054 if (low > high) { | |
| 6605 | 2055 verify_error(ErrorContext::bad_code(bci), |
| 2056 "low must be less than or equal to high in tableswitch"); | |
| 0 | 2057 return; |
| 2058 } | |
| 2059 keys = high - low + 1; | |
| 2060 if (keys < 0) { | |
| 6605 | 2061 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
| 0 | 2062 return; |
| 2063 } | |
| 2064 delta = 1; | |
| 2065 } else { | |
| 2066 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
| 2067 if (keys < 0) { | |
| 6605 | 2068 verify_error(ErrorContext::bad_code(bci), |
| 2069 "number of keys in lookupswitch less than 0"); | |
| 0 | 2070 return; |
| 2071 } | |
| 2072 delta = 2; | |
| 2073 // Make sure that the lookupswitch items are sorted | |
| 2074 for (int i = 0; i < (keys - 1); i++) { | |
| 2075 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
| 2076 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
| 2077 if (this_key >= next_key) { | |
| 6605 | 2078 verify_error(ErrorContext::bad_code(bci), |
| 2079 "Bad lookupswitch instruction"); | |
| 0 | 2080 return; |
| 2081 } | |
| 2082 } | |
| 2083 } | |
| 2084 int target = bci + default_offset; | |
| 2085 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
| 2086 for (int i = 0; i < keys; i++) { | |
| 6118 | 2087 // Because check_jump_target() may safepoint, the bytecode could have |
| 2088 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
| 2089 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
| 0 | 2090 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
| 2091 stackmap_table->check_jump_target( | |
| 2092 current_frame, target, CHECK_VERIFY(this)); | |
| 2093 } | |
| 6118 | 2094 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
| 0 | 2095 } |
| 2096 | |
| 2097 bool ClassVerifier::name_in_supers( | |
|
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2098 Symbol* ref_name, instanceKlassHandle current) { |
|
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2099 Klass* super = current->super(); |
| 0 | 2100 while (super != NULL) { |
|
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2101 if (super->name() == ref_name) { |
| 0 | 2102 return true; |
| 2103 } | |
|
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2104 super = super->super(); |
| 0 | 2105 } |
| 2106 return false; | |
| 2107 } | |
| 2108 | |
| 2109 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
| 2110 StackMapFrame* current_frame, | |
| 2111 constantPoolHandle cp, | |
| 2112 TRAPS) { | |
| 1565 | 2113 u2 index = bcs->get_index_u2(); |
| 6605 | 2114 verify_cp_type(bcs->bci(), index, cp, |
| 2115 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
| 0 | 2116 |
| 2117 // Get field name and signature | |
|
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|
2118 Symbol* field_name = cp->name_ref_at(index); |
|
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|
2119 Symbol* field_sig = cp->signature_ref_at(index); |
| 0 | 2120 |
| 2121 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
| 2122 class_format_error( | |
| 2123 "Invalid signature for field in class %s referenced " | |
| 2124 "from constant pool index %d", _klass->external_name(), index); | |
| 2125 return; | |
| 2126 } | |
| 2127 | |
| 2128 // Get referenced class type | |
| 2129 VerificationType ref_class_type = cp_ref_index_to_type( | |
| 2130 index, cp, CHECK_VERIFY(this)); | |
| 2131 if (!ref_class_type.is_object()) { | |
| 6605 | 2132 /* Unreachable? Class file parser verifies Fieldref contents */ |
| 2133 verify_error(ErrorContext::bad_type(bcs->bci(), | |
| 2134 TypeOrigin::cp(index, ref_class_type)), | |
| 2135 "Expecting reference to class in class %s at constant pool index %d", | |
| 2136 _klass->external_name(), index); | |
| 0 | 2137 return; |
| 2138 } | |
| 2139 VerificationType target_class_type = ref_class_type; | |
| 2140 | |
| 2141 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2142 "buffer type must match VerificationType size"); | |
| 2143 uintptr_t field_type_buffer[2]; | |
| 2144 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
| 2145 // If we make a VerificationType[2] array directly, the compiler calls | |
| 2146 // to the c-runtime library to do the allocation instead of just | |
| 2147 // stack allocating it. Plus it would run constructors. This shows up | |
| 2148 // in performance profiles. | |
| 2149 | |
| 2150 SignatureStream sig_stream(field_sig, false); | |
| 2151 VerificationType stack_object_type; | |
| 2152 int n = change_sig_to_verificationType( | |
| 2153 &sig_stream, field_type, CHECK_VERIFY(this)); | |
| 2154 u2 bci = bcs->bci(); | |
| 2155 bool is_assignable; | |
| 1565 | 2156 switch (bcs->raw_code()) { |
| 0 | 2157 case Bytecodes::_getstatic: { |
| 2158 for (int i = 0; i < n; i++) { | |
| 2159 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2160 } | |
| 2161 break; | |
| 2162 } | |
| 2163 case Bytecodes::_putstatic: { | |
| 2164 for (int i = n - 1; i >= 0; i--) { | |
| 2165 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2166 } | |
| 2167 break; | |
| 2168 } | |
| 2169 case Bytecodes::_getfield: { | |
| 2170 stack_object_type = current_frame->pop_stack( | |
| 2171 target_class_type, CHECK_VERIFY(this)); | |
| 2172 for (int i = 0; i < n; i++) { | |
| 2173 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2174 } | |
| 2175 goto check_protected; | |
| 2176 } | |
| 2177 case Bytecodes::_putfield: { | |
| 2178 for (int i = n - 1; i >= 0; i--) { | |
| 2179 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2180 } | |
| 2181 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
| 2182 | |
| 2183 // The JVMS 2nd edition allows field initialization before the superclass | |
| 2184 // initializer, if the field is defined within the current class. | |
| 2185 fieldDescriptor fd; | |
| 2186 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
| 2187 target_class_type.equals(current_type()) && | |
|
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|
2188 _klass->find_local_field(field_name, field_sig, &fd)) { |
| 0 | 2189 stack_object_type = current_type(); |
| 2190 } | |
| 2191 is_assignable = target_class_type.is_assignable_from( | |
| 18052 | 2192 stack_object_type, this, false, CHECK_VERIFY(this)); |
| 0 | 2193 if (!is_assignable) { |
| 6605 | 2194 verify_error(ErrorContext::bad_type(bci, |
| 2195 current_frame->stack_top_ctx(), | |
| 2196 TypeOrigin::cp(index, target_class_type)), | |
| 2197 "Bad type on operand stack in putfield"); | |
| 0 | 2198 return; |
| 2199 } | |
| 2200 } | |
| 2201 check_protected: { | |
| 2202 if (_this_type == stack_object_type) | |
| 2203 break; // stack_object_type must be assignable to _current_class_type | |
|
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|
2204 Symbol* ref_class_name = |
|
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diff
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|
2205 cp->klass_name_at(cp->klass_ref_index_at(index)); |
|
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|
2206 if (!name_in_supers(ref_class_name, current_class())) |
| 0 | 2207 // stack_object_type must be assignable to _current_class_type since: |
| 2208 // 1. stack_object_type must be assignable to ref_class. | |
| 2209 // 2. ref_class must be _current_class or a subclass of it. It can't | |
| 2210 // be a superclass of it. See revised JVMS 5.4.4. | |
| 2211 break; | |
| 2212 | |
|
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2213 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
|
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|
2214 if (is_protected_access(current_class(), ref_class_oop, field_name, |
|
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|
2215 field_sig, false)) { |
| 0 | 2216 // It's protected access, check if stack object is assignable to |
| 2217 // current class. | |
| 2218 is_assignable = current_type().is_assignable_from( | |
| 18052 | 2219 stack_object_type, this, true, CHECK_VERIFY(this)); |
| 0 | 2220 if (!is_assignable) { |
| 6605 | 2221 verify_error(ErrorContext::bad_type(bci, |
| 2222 current_frame->stack_top_ctx(), | |
| 2223 TypeOrigin::implicit(current_type())), | |
| 2224 "Bad access to protected data in getfield"); | |
| 0 | 2225 return; |
| 2226 } | |
| 2227 } | |
| 2228 break; | |
| 2229 } | |
| 2230 default: ShouldNotReachHere(); | |
| 2231 } | |
| 2232 } | |
| 2233 | |
|
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|
2234 // Look at the method's handlers. If the bci is in the handler's try block |
|
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|
2235 // then check if the handler_pc is already on the stack. If not, push it. |
|
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|
2236 void ClassVerifier::push_handlers(ExceptionTable* exhandlers, |
|
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|
2237 GrowableArray<u4>* handler_stack, |
|
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|
2238 u4 bci) { |
|
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changeset
|
2239 int exlength = exhandlers->length(); |
|
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|
2240 for(int x = 0; x < exlength; x++) { |
|
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|
2241 if (bci >= exhandlers->start_pc(x) && bci < exhandlers->end_pc(x)) { |
|
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changeset
|
2242 handler_stack->append_if_missing(exhandlers->handler_pc(x)); |
|
077483254bf6
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|
2243 } |
|
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|
2244 } |
|
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|
2245 } |
|
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|
2246 |
|
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changeset
|
2247 // Return TRUE if all code paths starting with start_bc_offset end in |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2248 // bytecode athrow or loop. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2249 bool ClassVerifier::ends_in_athrow(u4 start_bc_offset) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2250 ResourceMark rm; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2251 // Create bytecode stream. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2252 RawBytecodeStream bcs(method()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2253 u4 code_length = method()->code_size(); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2254 bcs.set_start(start_bc_offset); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2255 u4 target; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2256 // Create stack for storing bytecode start offsets for if* and *switch. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2257 GrowableArray<u4>* bci_stack = new GrowableArray<u4>(30); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2258 // Create stack for handlers for try blocks containing this handler. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2259 GrowableArray<u4>* handler_stack = new GrowableArray<u4>(30); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2260 // Create list of visited branch opcodes (goto* and if*). |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2261 GrowableArray<u4>* visited_branches = new GrowableArray<u4>(30); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2262 ExceptionTable exhandlers(_method()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2263 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2264 while (true) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2265 if (bcs.is_last_bytecode()) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2266 // if no more starting offsets to parse or if at the end of the |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2267 // method then return false. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2268 if ((bci_stack->is_empty()) || ((u4)bcs.end_bci() == code_length)) |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2269 return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2270 // Pop a bytecode starting offset and scan from there. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2271 bcs.set_start(bci_stack->pop()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2272 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2273 Bytecodes::Code opcode = bcs.raw_next(); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2274 u4 bci = bcs.bci(); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2275 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2276 // If the bytecode is in a TRY block, push its handlers so they |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2277 // will get parsed. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2278 push_handlers(&exhandlers, handler_stack, bci); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2279 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2280 switch (opcode) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2281 case Bytecodes::_if_icmpeq: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2282 case Bytecodes::_if_icmpne: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2283 case Bytecodes::_if_icmplt: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2284 case Bytecodes::_if_icmpge: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2285 case Bytecodes::_if_icmpgt: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2286 case Bytecodes::_if_icmple: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2287 case Bytecodes::_ifeq: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2288 case Bytecodes::_ifne: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2289 case Bytecodes::_iflt: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2290 case Bytecodes::_ifge: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2291 case Bytecodes::_ifgt: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2292 case Bytecodes::_ifle: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2293 case Bytecodes::_if_acmpeq: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2294 case Bytecodes::_if_acmpne: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2295 case Bytecodes::_ifnull: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2296 case Bytecodes::_ifnonnull: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2297 target = bcs.dest(); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2298 if (visited_branches->contains(bci)) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2299 if (bci_stack->is_empty()) return true; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2300 // Pop a bytecode starting offset and scan from there. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2301 bcs.set_start(bci_stack->pop()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2302 } else { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2303 if (target > bci) { // forward branch |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2304 if (target >= code_length) return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2305 // Push the branch target onto the stack. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2306 bci_stack->push(target); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2307 // then, scan bytecodes starting with next. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2308 bcs.set_start(bcs.next_bci()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2309 } else { // backward branch |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2310 // Push bytecode offset following backward branch onto the stack. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2311 bci_stack->push(bcs.next_bci()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2312 // Check bytecodes starting with branch target. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2313 bcs.set_start(target); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2314 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2315 // Record target so we don't branch here again. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2316 visited_branches->append(bci); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2317 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2318 break; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2319 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2320 case Bytecodes::_goto: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2321 case Bytecodes::_goto_w: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2322 target = (opcode == Bytecodes::_goto ? bcs.dest() : bcs.dest_w()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2323 if (visited_branches->contains(bci)) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2324 if (bci_stack->is_empty()) return true; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2325 // Been here before, pop new starting offset from stack. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2326 bcs.set_start(bci_stack->pop()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2327 } else { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2328 if (target >= code_length) return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2329 // Continue scanning from the target onward. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2330 bcs.set_start(target); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2331 // Record target so we don't branch here again. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2332 visited_branches->append(bci); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2333 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2334 break; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2335 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2336 // Check that all switch alternatives end in 'athrow' bytecodes. Since it |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2337 // is difficult to determine where each switch alternative ends, parse |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2338 // each switch alternative until either hit a 'return', 'athrow', or reach |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2339 // the end of the method's bytecodes. This is gross but should be okay |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2340 // because: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2341 // 1. tableswitch and lookupswitch byte codes in handlers for ctor explicit |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2342 // constructor invocations should be rare. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2343 // 2. if each switch alternative ends in an athrow then the parsing should be |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2344 // short. If there is no athrow then it is bogus code, anyway. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2345 case Bytecodes::_lookupswitch: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2346 case Bytecodes::_tableswitch: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2347 { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2348 address aligned_bcp = (address) round_to((intptr_t)(bcs.bcp() + 1), jintSize); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2349 u4 default_offset = Bytes::get_Java_u4(aligned_bcp) + bci; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2350 int keys, delta; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2351 if (opcode == Bytecodes::_tableswitch) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2352 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2353 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2354 // This is invalid, but let the regular bytecode verifier |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2355 // report this because the user will get a better error message. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2356 if (low > high) return true; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2357 keys = high - low + 1; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2358 delta = 1; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2359 } else { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2360 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2361 delta = 2; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2362 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2363 // Invalid, let the regular bytecode verifier deal with it. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2364 if (keys < 0) return true; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2365 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2366 // Push the offset of the next bytecode onto the stack. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2367 bci_stack->push(bcs.next_bci()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2368 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2369 // Push the switch alternatives onto the stack. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2370 for (int i = 0; i < keys; i++) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2371 u4 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2372 if (target > code_length) return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2373 bci_stack->push(target); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2374 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2375 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2376 // Start bytecode parsing for the switch at the default alternative. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2377 if (default_offset > code_length) return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2378 bcs.set_start(default_offset); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2379 break; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2380 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2381 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2382 case Bytecodes::_return: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2383 return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2384 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2385 case Bytecodes::_athrow: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2386 { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2387 if (bci_stack->is_empty()) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2388 if (handler_stack->is_empty()) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2389 return true; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2390 } else { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2391 // Parse the catch handlers for try blocks containing athrow. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2392 bcs.set_start(handler_stack->pop()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2393 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2394 } else { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2395 // Pop a bytecode offset and starting scanning from there. |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2396 bcs.set_start(bci_stack->pop()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2397 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2398 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2399 break; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2400 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2401 default: |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2402 ; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2403 } // end switch |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2404 } // end while loop |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2405 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2406 return false; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2407 } |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2408 |
| 0 | 2409 void ClassVerifier::verify_invoke_init( |
| 6605 | 2410 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
| 0 | 2411 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
| 2412 constantPoolHandle cp, TRAPS) { | |
| 2413 u2 bci = bcs->bci(); | |
| 2414 VerificationType type = current_frame->pop_stack( | |
| 2415 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2416 if (type == VerificationType::uninitialized_this_type()) { | |
| 6155 | 2417 // The method must be an <init> method of this class or its superclass |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2418 Klass* superk = current_class()->super(); |
| 1677 | 2419 if (ref_class_type.name() != current_class()->name() && |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2420 ref_class_type.name() != superk->name()) { |
| 6605 | 2421 verify_error(ErrorContext::bad_type(bci, |
| 2422 TypeOrigin::implicit(ref_class_type), | |
| 2423 TypeOrigin::implicit(current_type())), | |
| 2424 "Bad <init> method call"); | |
| 0 | 2425 return; |
| 2426 } | |
| 17573 | 2427 |
|
18099
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2428 // Check if this call is done from inside of a TRY block. If so, make |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2429 // sure that all catch clause paths end in a throw. Otherwise, this |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2430 // can result in returning an incomplete object. |
| 17573 | 2431 ExceptionTable exhandlers(_method()); |
| 2432 int exlength = exhandlers.length(); | |
| 2433 for(int i = 0; i < exlength; i++) { | |
|
18099
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2434 u2 start_pc = exhandlers.start_pc(i); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2435 u2 end_pc = exhandlers.end_pc(i); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2436 |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2437 if (bci >= start_pc && bci < end_pc) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2438 if (!ends_in_athrow(exhandlers.handler_pc(i))) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2439 verify_error(ErrorContext::bad_code(bci), |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2440 "Bad <init> method call from after the start of a try block"); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2441 return; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2442 } else if (VerboseVerification) { |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2443 ResourceMark rm; |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2444 tty->print_cr( |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2445 "Survived call to ends_in_athrow(): %s", |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2446 current_class()->name()->as_C_string()); |
|
077483254bf6
8050485: super() in a try block in a ctor causes VerifyError
hseigel
parents:
18094
diff
changeset
|
2447 } |
| 17573 | 2448 } |
| 2449 } | |
| 2450 | |
| 0 | 2451 current_frame->initialize_object(type, current_type()); |
| 2452 *this_uninit = true; | |
| 2453 } else if (type.is_uninitialized()) { | |
| 2454 u2 new_offset = type.bci(); | |
| 2455 address new_bcp = bcs->bcp() - bci + new_offset; | |
| 2456 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
| 6605 | 2457 /* Unreachable? Stack map parsing ensures valid type and new |
| 2458 * instructions have a valid BCI. */ | |
| 2459 verify_error(ErrorContext::bad_code(new_offset), | |
| 2460 "Expecting new instruction"); | |
| 0 | 2461 return; |
| 2462 } | |
| 2463 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
| 6605 | 2464 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
| 0 | 2465 |
| 2466 // The method must be an <init> method of the indicated class | |
| 2467 VerificationType new_class_type = cp_index_to_type( | |
| 2468 new_class_index, cp, CHECK_VERIFY(this)); | |
| 2469 if (!new_class_type.equals(ref_class_type)) { | |
| 6605 | 2470 verify_error(ErrorContext::bad_type(bci, |
| 2471 TypeOrigin::cp(new_class_index, new_class_type), | |
| 2472 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
| 2473 "Call to wrong <init> method"); | |
| 0 | 2474 return; |
| 2475 } | |
| 2476 // According to the VM spec, if the referent class is a superclass of the | |
| 2477 // current class, and is in a different runtime package, and the method is | |
| 2478 // protected, then the objectref must be the current class or a subclass | |
| 2479 // of the current class. | |
| 2480 VerificationType objectref_type = new_class_type; | |
| 2481 if (name_in_supers(ref_class_type.name(), current_class())) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2482 Klass* ref_klass = load_class( |
| 0 | 2483 ref_class_type.name(), CHECK_VERIFY(this)); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2484 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
| 0 | 2485 vmSymbols::object_initializer_name(), |
| 18007 | 2486 cp->signature_ref_at(bcs->get_index_u2()), Klass::normal); |
|
17593
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2487 // Do nothing if method is not found. Let resolution detect the error. |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2488 if (m != NULL) { |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2489 instanceKlassHandle mh(THREAD, m->method_holder()); |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2490 if (m->is_protected() && !mh->is_same_class_package(_klass())) { |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2491 bool assignable = current_type().is_assignable_from( |
| 18060 | 2492 objectref_type, this, true, CHECK_VERIFY(this)); |
|
17593
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2493 if (!assignable) { |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2494 verify_error(ErrorContext::bad_type(bci, |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2495 TypeOrigin::cp(new_class_index, objectref_type), |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2496 TypeOrigin::implicit(current_type())), |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2497 "Bad access to protected <init> method"); |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2498 return; |
|
e6b738407432
8043454: Test case for 8037157 should not throw a VerifyError
hseigel
parents:
17583
diff
changeset
|
2499 } |
| 0 | 2500 } |
| 2501 } | |
| 2502 } | |
| 2503 current_frame->initialize_object(type, new_class_type); | |
| 2504 } else { | |
| 6605 | 2505 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
| 2506 "Bad operand type when invoking <init>"); | |
| 0 | 2507 return; |
| 2508 } | |
| 2509 } | |
| 2510 | |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2511 bool ClassVerifier::is_same_or_direct_interface( |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2512 instanceKlassHandle klass, |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2513 VerificationType klass_type, |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2514 VerificationType ref_class_type) { |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2515 if (ref_class_type.equals(klass_type)) return true; |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2516 Array<Klass*>* local_interfaces = klass->local_interfaces(); |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2517 if (local_interfaces != NULL) { |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2518 for (int x = 0; x < local_interfaces->length(); x++) { |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2519 Klass* k = local_interfaces->at(x); |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2520 assert (k != NULL && k->is_interface(), "invalid interface"); |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2521 if (ref_class_type.equals(VerificationType::reference_type(k->name()))) { |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2522 return true; |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2523 } |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2524 } |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2525 } |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2526 return false; |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2527 } |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2528 |
| 0 | 2529 void ClassVerifier::verify_invoke_instructions( |
| 2530 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 2531 bool *this_uninit, VerificationType return_type, | |
| 2532 constantPoolHandle cp, TRAPS) { | |
| 2533 // Make sure the constant pool item is the right type | |
| 1565 | 2534 u2 index = bcs->get_index_u2(); |
| 2535 Bytecodes::Code opcode = bcs->raw_code(); | |
| 6934 | 2536 unsigned int types; |
| 2537 switch (opcode) { | |
| 2538 case Bytecodes::_invokeinterface: | |
| 2539 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
| 2540 break; | |
| 2541 case Bytecodes::_invokedynamic: | |
| 2542 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
| 2543 break; | |
| 2544 case Bytecodes::_invokespecial: | |
|
9066
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2545 case Bytecodes::_invokestatic: |
|
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2546 types = (_klass->major_version() < STATIC_METHOD_IN_INTERFACE_MAJOR_VERSION) ? |
|
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2547 (1 << JVM_CONSTANT_Methodref) : |
|
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2548 ((1 << JVM_CONSTANT_InterfaceMethodref) | (1 << JVM_CONSTANT_Methodref)); |
|
09b0d3e9ba6c
8011671: JCK tests on static interface methods fail under b84: Illegal type at constant pool entry 5
bharadwaj
parents:
8819
diff
changeset
|
2549 break; |
| 6934 | 2550 default: |
| 2551 types = 1 << JVM_CONSTANT_Methodref; | |
| 2552 } | |
| 6605 | 2553 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
| 0 | 2554 |
| 2555 // Get method name and signature | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2556 Symbol* method_name = cp->name_ref_at(index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2557 Symbol* method_sig = cp->signature_ref_at(index); |
| 0 | 2558 |
| 2559 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
| 2560 class_format_error( | |
| 2561 "Invalid method signature in class %s referenced " | |
| 2562 "from constant pool index %d", _klass->external_name(), index); | |
| 2563 return; | |
| 2564 } | |
| 2565 | |
| 2566 // Get referenced class type | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2567 VerificationType ref_class_type; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2568 if (opcode == Bytecodes::_invokedynamic) { |
| 1602 | 2569 if (!EnableInvokeDynamic || |
| 2570 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2571 if (!EnableInvokeDynamic) { |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2572 class_format_error("invokedynamic instructions not enabled in this JVM"); |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2573 } else { |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2574 class_format_error("invokedynamic instructions not supported by this class file version (%d), class %s", |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2575 _klass->major_version(), _klass->external_name()); |
|
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2576 } |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2577 return; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2578 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2579 } else { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2580 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2581 } |
| 0 | 2582 |
| 2583 // For a small signature length, we just allocate 128 bytes instead | |
| 2584 // of parsing the signature once to find its size. | |
| 2585 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
| 2586 // longs/doubles to be consertive. | |
| 2587 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2588 "buffer type must match VerificationType size"); | |
| 2589 uintptr_t on_stack_sig_types_buffer[128]; | |
| 2590 // If we make a VerificationType[128] array directly, the compiler calls | |
| 2591 // to the c-runtime library to do the allocation instead of just | |
| 2592 // stack allocating it. Plus it would run constructors. This shows up | |
| 2593 // in performance profiles. | |
| 2594 | |
| 2595 VerificationType* sig_types; | |
| 2596 int size = (method_sig->utf8_length() - 3) * 2; | |
| 2597 if (size > 128) { | |
| 2598 // Long and double occupies two slots here. | |
| 2599 ArgumentSizeComputer size_it(method_sig); | |
| 2600 size = size_it.size(); | |
| 2601 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
| 2602 } else{ | |
| 2603 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
| 2604 } | |
| 2605 SignatureStream sig_stream(method_sig); | |
| 2606 int sig_i = 0; | |
| 2607 while (!sig_stream.at_return_type()) { | |
| 2608 sig_i += change_sig_to_verificationType( | |
| 2609 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
| 2610 sig_stream.next(); | |
| 2611 } | |
| 2612 int nargs = sig_i; | |
| 2613 | |
| 2614 #ifdef ASSERT | |
| 2615 { | |
| 2616 ArgumentSizeComputer size_it(method_sig); | |
| 2617 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
| 2618 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
| 2619 } | |
| 2620 #endif | |
| 2621 | |
| 2622 // Check instruction operands | |
| 2623 u2 bci = bcs->bci(); | |
| 2624 if (opcode == Bytecodes::_invokeinterface) { | |
| 2625 address bcp = bcs->bcp(); | |
| 2626 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
| 2627 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
| 2628 // the difference between the size of the operand stack before and after the instruction | |
| 2629 // executes. | |
| 2630 if (*(bcp+3) != (nargs+1)) { | |
| 6605 | 2631 verify_error(ErrorContext::bad_code(bci), |
| 2632 "Inconsistent args count operand in invokeinterface"); | |
| 0 | 2633 return; |
| 2634 } | |
| 2635 if (*(bcp+4) != 0) { | |
| 6605 | 2636 verify_error(ErrorContext::bad_code(bci), |
| 2637 "Fourth operand byte of invokeinterface must be zero"); | |
| 0 | 2638 return; |
| 2639 } | |
| 2640 } | |
| 2641 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2642 if (opcode == Bytecodes::_invokedynamic) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2643 address bcp = bcs->bcp(); |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2644 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
| 6605 | 2645 verify_error(ErrorContext::bad_code(bci), |
| 2646 "Third and fourth operand bytes of invokedynamic must be zero"); | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2647 return; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2648 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2649 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2650 |
| 0 | 2651 if (method_name->byte_at(0) == '<') { |
| 2652 // Make sure <init> can only be invoked by invokespecial | |
| 2653 if (opcode != Bytecodes::_invokespecial || | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2654 method_name != vmSymbols::object_initializer_name()) { |
| 6605 | 2655 verify_error(ErrorContext::bad_code(bci), |
| 2656 "Illegal call to internal method"); | |
| 0 | 2657 return; |
| 2658 } | |
| 2659 } else if (opcode == Bytecodes::_invokespecial | |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2660 && !is_same_or_direct_interface(current_class(), current_type(), ref_class_type) |
| 0 | 2661 && !ref_class_type.equals(VerificationType::reference_type( |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2662 current_class()->super()->name()))) { |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2663 bool subtype = false; |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2664 bool have_imr_indirect = cp->tag_at(index).value() == JVM_CONSTANT_InterfaceMethodref; |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2665 if (!current_class()->is_anonymous()) { |
|
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2666 subtype = ref_class_type.is_assignable_from( |
| 18052 | 2667 current_type(), this, false, CHECK_VERIFY(this)); |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2668 } else { |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2669 VerificationType host_klass_type = |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2670 VerificationType::reference_type(current_class()->host_klass()->name()); |
| 18052 | 2671 subtype = ref_class_type.is_assignable_from(host_klass_type, this, false, CHECK_VERIFY(this)); |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2672 |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2673 // If invokespecial of IMR, need to recheck for same or |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2674 // direct interface relative to the host class |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2675 have_imr_indirect = (have_imr_indirect && |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2676 !is_same_or_direct_interface( |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2677 InstanceKlass::cast(current_class()->host_klass()), |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2678 host_klass_type, ref_class_type)); |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2679 } |
| 0 | 2680 if (!subtype) { |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2681 verify_error(ErrorContext::bad_code(bci), |
|
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2682 "Bad invokespecial instruction: " |
|
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2683 "current class isn't assignable to reference class."); |
|
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2684 return; |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2685 } else if (have_imr_indirect) { |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2686 verify_error(ErrorContext::bad_code(bci), |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2687 "Bad invokespecial instruction: " |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2688 "interface method reference is in an indirect superinterface."); |
|
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2689 return; |
| 0 | 2690 } |
|
13401
22eaa15b7960
8026065: InterfaceMethodref for invokespecial must name a direct superinterface
hseigel
parents:
13385
diff
changeset
|
2691 |
| 0 | 2692 } |
| 2693 // Match method descriptor with operand stack | |
| 2694 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
| 2695 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
| 2696 } | |
| 2697 // Check objectref on operand stack | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2698 if (opcode != Bytecodes::_invokestatic && |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2699 opcode != Bytecodes::_invokedynamic) { |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2700 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
| 6605 | 2701 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
| 0 | 2702 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
| 2703 } else { // other methods | |
| 2704 // Ensures that target class is assignable to method class. | |
| 2705 if (opcode == Bytecodes::_invokespecial) { | |
|
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2706 if (!current_class()->is_anonymous()) { |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2707 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2708 } else { |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2709 // anonymous class invokespecial calls: check if the |
|
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2710 // objectref is a subtype of the host_klass of the current class |
|
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2711 // to allow an anonymous class to reference methods in the host_klass |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2712 VerificationType top = current_frame->pop_stack(CHECK_VERIFY(this)); |
|
12891
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2713 VerificationType hosttype = |
|
7114c4597ae3
8026365: NoClassDefinitionFound for anonymous class invokespecial.
acorn
parents:
12827
diff
changeset
|
2714 VerificationType::reference_type(current_class()->host_klass()->name()); |
| 18052 | 2715 bool subtype = hosttype.is_assignable_from(top, this, false, CHECK_VERIFY(this)); |
|
12827
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2716 if (!subtype) { |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2717 verify_error( ErrorContext::bad_type(current_frame->offset(), |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2718 current_frame->stack_top_ctx(), |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2719 TypeOrigin::implicit(top)), |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2720 "Bad type on operand stack"); |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2721 return; |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2722 } |
|
c72075c2883e
8026022: Verifier: allow anon classes to invokespecial host class/intf methods.
acorn
parents:
12154
diff
changeset
|
2723 } |
| 0 | 2724 } else if (opcode == Bytecodes::_invokevirtual) { |
| 2725 VerificationType stack_object_type = | |
| 2726 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2727 if (current_type() != stack_object_type) { | |
| 2728 assert(cp->cache() == NULL, "not rewritten yet"); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2729 Symbol* ref_class_name = |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2730 cp->klass_name_at(cp->klass_ref_index_at(index)); |
| 0 | 2731 // See the comments in verify_field_instructions() for |
| 2732 // the rationale behind this. | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2733 if (name_in_supers(ref_class_name, current_class())) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6608
diff
changeset
|
2734 Klass* ref_class = load_class(ref_class_name, CHECK); |
| 0 | 2735 if (is_protected_access( |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2736 _klass, ref_class, method_name, method_sig, true)) { |
| 0 | 2737 // It's protected access, check if stack object is |
| 2738 // assignable to current class. | |
| 2739 bool is_assignable = current_type().is_assignable_from( | |
| 18052 | 2740 stack_object_type, this, true, CHECK_VERIFY(this)); |
| 0 | 2741 if (!is_assignable) { |
| 2742 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
| 2743 && stack_object_type.is_array() | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2744 && method_name == vmSymbols::clone_name()) { |
| 0 | 2745 // Special case: arrays pretend to implement public Object |
| 2746 // clone(). | |
| 2747 } else { | |
| 6605 | 2748 verify_error(ErrorContext::bad_type(bci, |
| 2749 current_frame->stack_top_ctx(), | |
| 2750 TypeOrigin::implicit(current_type())), | |
| 2751 "Bad access to protected data in invokevirtual"); | |
| 0 | 2752 return; |
| 2753 } | |
| 2754 } | |
| 2755 } | |
| 2756 } | |
| 2757 } | |
| 2758 } else { | |
| 2759 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
| 2760 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2761 } | |
| 2762 } | |
| 2763 } | |
| 2764 // Push the result type. | |
| 2765 if (sig_stream.type() != T_VOID) { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
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2766 if (method_name == vmSymbols::object_initializer_name()) { |
| 0 | 2767 // <init> method must have a void return type |
| 6605 | 2768 /* Unreachable? Class file parser verifies that methods with '<' have |
| 2769 * void return */ | |
| 2770 verify_error(ErrorContext::bad_code(bci), | |
| 2771 "Return type must be void in <init> method"); | |
| 0 | 2772 return; |
| 2773 } | |
| 2774 VerificationType return_type[2]; | |
| 2775 int n = change_sig_to_verificationType( | |
| 2776 &sig_stream, return_type, CHECK_VERIFY(this)); | |
| 2777 for (int i = 0; i < n; i++) { | |
| 2778 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
| 2779 } | |
| 2780 } | |
| 2781 } | |
| 2782 | |
| 2783 VerificationType ClassVerifier::get_newarray_type( | |
| 2784 u2 index, u2 bci, TRAPS) { | |
| 2785 const char* from_bt[] = { | |
| 2786 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
| 2787 }; | |
| 2788 if (index < T_BOOLEAN || index > T_LONG) { | |
| 6605 | 2789 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
| 0 | 2790 return VerificationType::bogus_type(); |
| 2791 } | |
| 2792 | |
| 2793 // from_bt[index] contains the array signature which has a length of 2 | |
|
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2794 Symbol* sig = create_temporary_symbol( |
| 0 | 2795 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
| 2796 return VerificationType::reference_type(sig); | |
| 2797 } | |
| 2798 | |
| 2799 void ClassVerifier::verify_anewarray( | |
| 6605 | 2800 u2 bci, u2 index, constantPoolHandle cp, |
| 2801 StackMapFrame* current_frame, TRAPS) { | |
| 2802 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
| 0 | 2803 current_frame->pop_stack( |
| 2804 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2805 | |
| 2806 VerificationType component_type = | |
| 2807 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 2808 int length; | |
| 2809 char* arr_sig_str; | |
| 2810 if (component_type.is_array()) { // it's an array | |
| 2811 const char* component_name = component_type.name()->as_utf8(); | |
| 2812 // add one dimension to component | |
| 2813 length = (int)strlen(component_name) + 1; | |
| 2814 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2815 arr_sig_str[0] = '['; | |
| 2816 strncpy(&arr_sig_str[1], component_name, length - 1); | |
| 2817 } else { // it's an object or interface | |
| 2818 const char* component_name = component_type.name()->as_utf8(); | |
| 2819 // add one dimension to component with 'L' prepended and ';' postpended. | |
| 2820 length = (int)strlen(component_name) + 3; | |
| 2821 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2822 arr_sig_str[0] = '['; | |
| 2823 arr_sig_str[1] = 'L'; | |
| 2824 strncpy(&arr_sig_str[2], component_name, length - 2); | |
| 2825 arr_sig_str[length - 1] = ';'; | |
| 2826 } | |
|
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2827 Symbol* arr_sig = create_temporary_symbol( |
| 0 | 2828 arr_sig_str, length, CHECK_VERIFY(this)); |
| 2829 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
| 2830 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 2831 } | |
| 2832 | |
| 2833 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2834 current_frame->get_local( | |
| 2835 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2836 current_frame->push_stack( | |
| 2837 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2838 } | |
| 2839 | |
| 2840 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2841 current_frame->get_local_2( | |
| 2842 index, VerificationType::long_type(), | |
| 2843 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2844 current_frame->push_stack_2( | |
| 2845 VerificationType::long_type(), | |
| 2846 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2847 } | |
| 2848 | |
| 2849 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2850 current_frame->get_local( | |
| 2851 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2852 current_frame->push_stack( | |
| 2853 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2854 } | |
| 2855 | |
| 2856 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2857 current_frame->get_local_2( | |
| 2858 index, VerificationType::double_type(), | |
| 2859 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2860 current_frame->push_stack_2( | |
| 2861 VerificationType::double_type(), | |
| 2862 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2863 } | |
| 2864 | |
| 2865 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2866 VerificationType type = current_frame->get_local( | |
| 2867 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2868 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
| 2869 } | |
| 2870 | |
| 2871 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2872 current_frame->pop_stack( | |
| 2873 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2874 current_frame->set_local( | |
| 2875 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2876 } | |
| 2877 | |
| 2878 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2879 current_frame->pop_stack_2( | |
| 2880 VerificationType::long2_type(), | |
| 2881 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 2882 current_frame->set_local_2( | |
| 2883 index, VerificationType::long_type(), | |
| 2884 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2885 } | |
| 2886 | |
| 2887 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2888 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2889 current_frame->set_local( | |
| 2890 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2891 } | |
| 2892 | |
| 2893 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2894 current_frame->pop_stack_2( | |
| 2895 VerificationType::double2_type(), | |
| 2896 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 2897 current_frame->set_local_2( | |
| 2898 index, VerificationType::double_type(), | |
| 2899 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2900 } | |
| 2901 | |
| 2902 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2903 VerificationType type = current_frame->pop_stack( | |
| 2904 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2905 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2906 } | |
| 2907 | |
| 2908 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2909 VerificationType type = current_frame->get_local( | |
| 2910 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2911 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2912 } | |
| 2913 | |
| 2914 void ClassVerifier::verify_return_value( | |
| 6605 | 2915 VerificationType return_type, VerificationType type, u2 bci, |
| 2916 StackMapFrame* current_frame, TRAPS) { | |
| 0 | 2917 if (return_type == VerificationType::bogus_type()) { |
| 6605 | 2918 verify_error(ErrorContext::bad_type(bci, |
| 2919 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2920 "Method expects a return value"); | |
| 0 | 2921 return; |
| 2922 } | |
| 18052 | 2923 bool match = return_type.is_assignable_from(type, this, false, CHECK_VERIFY(this)); |
| 0 | 2924 if (!match) { |
| 6605 | 2925 verify_error(ErrorContext::bad_type(bci, |
| 2926 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2927 "Bad return type"); | |
| 0 | 2928 return; |
| 2929 } | |
| 2930 } | |
|
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2931 |
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2932 // The verifier creates symbols which are substrings of Symbols. |
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2933 // These are stored in the verifier until the end of verification so that |
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2934 // they can be reference counted. |
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2935 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
|
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2936 int end, TRAPS) { |
|
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2937 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
|
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2938 _symbols->push(sym); |
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2939 return sym; |
|
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2940 } |
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2941 |
|
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2942 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
|
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2943 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
|
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2944 _symbols->push(sym); |
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2945 return sym; |
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2946 } |