Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/verifier.cpp @ 6934:4735d2c84362
7200776: Implement default methods in interfaces
Summary: Add generic type analysis and default method selection algorithms
Reviewed-by: coleenp, acorn
| author | kamg |
|---|---|
| date | Thu, 11 Oct 2012 12:25:42 -0400 |
| parents | da91efe96a93 |
| children | 18fb7da42534 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2012, 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 |
| 0 | 66 // Access to external entry for VerifyClassCodes - old byte code verifier |
| 67 | |
| 68 extern "C" { | |
| 69 typedef jboolean (*verify_byte_codes_fn_t)(JNIEnv *, jclass, char *, jint); | |
| 70 typedef jboolean (*verify_byte_codes_fn_new_t)(JNIEnv *, jclass, char *, jint, jint); | |
| 71 } | |
| 72 | |
| 73 static void* volatile _verify_byte_codes_fn = NULL; | |
| 74 | |
| 75 static volatile jint _is_new_verify_byte_codes_fn = (jint) true; | |
| 76 | |
| 77 static void* verify_byte_codes_fn() { | |
| 78 if (_verify_byte_codes_fn == NULL) { | |
| 79 void *lib_handle = os::native_java_library(); | |
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80 void *func = os::dll_lookup(lib_handle, "VerifyClassCodesForMajorVersion"); |
| 0 | 81 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 82 if (func == NULL) { | |
| 83 OrderAccess::release_store(&_is_new_verify_byte_codes_fn, false); | |
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84 func = os::dll_lookup(lib_handle, "VerifyClassCodes"); |
| 0 | 85 OrderAccess::release_store_ptr(&_verify_byte_codes_fn, func); |
| 86 } | |
| 87 } | |
| 88 return (void*)_verify_byte_codes_fn; | |
| 89 } | |
| 90 | |
| 91 | |
| 92 // Methods in Verifier | |
| 93 | |
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94 bool Verifier::should_verify_for(oop class_loader, bool should_verify_class) { |
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95 return (class_loader == NULL || !should_verify_class) ? |
| 0 | 96 BytecodeVerificationLocal : BytecodeVerificationRemote; |
| 97 } | |
| 98 | |
| 99 bool Verifier::relax_verify_for(oop loader) { | |
| 100 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 101 bool need_verify = | |
| 102 // verifyAll | |
| 103 (BytecodeVerificationLocal && BytecodeVerificationRemote) || | |
| 104 // verifyRemote | |
| 105 (!BytecodeVerificationLocal && BytecodeVerificationRemote && !trusted); | |
| 106 return !need_verify; | |
| 107 } | |
| 108 | |
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109 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) { |
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110 HandleMark hm; |
| 0 | 111 ResourceMark rm(THREAD); |
| 112 | |
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113 Symbol* exception_name = NULL; |
| 0 | 114 const size_t message_buffer_len = klass->name()->utf8_length() + 1024; |
| 115 char* message_buffer = NEW_RESOURCE_ARRAY(char, message_buffer_len); | |
| 6605 | 116 char* exception_message = message_buffer; |
| 0 | 117 |
| 118 const char* klassName = klass->external_name(); | |
| 6605 | 119 bool can_failover = FailOverToOldVerifier && |
| 120 klass->major_version() < NOFAILOVER_MAJOR_VERSION; | |
| 0 | 121 |
| 122 // If the class should be verified, first see if we can use the split | |
| 123 // verifier. If not, or if verification fails and FailOverToOldVerifier | |
| 124 // is set, then call the inference verifier. | |
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125 if (is_eligible_for_verification(klass, should_verify_class)) { |
| 0 | 126 if (TraceClassInitialization) { |
| 127 tty->print_cr("Start class verification for: %s", klassName); | |
| 128 } | |
| 129 if (UseSplitVerifier && | |
| 130 klass->major_version() >= STACKMAP_ATTRIBUTE_MAJOR_VERSION) { | |
| 6605 | 131 ClassVerifier split_verifier(klass, THREAD); |
| 132 split_verifier.verify_class(THREAD); | |
| 133 exception_name = split_verifier.result(); | |
| 134 if (can_failover && !HAS_PENDING_EXCEPTION && | |
| 0 | 135 (exception_name == vmSymbols::java_lang_VerifyError() || |
| 136 exception_name == vmSymbols::java_lang_ClassFormatError())) { | |
| 6605 | 137 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 138 tty->print_cr( |
| 139 "Fail over class verification to old verifier for: %s", klassName); | |
| 140 } | |
| 141 exception_name = inference_verify( | |
| 142 klass, message_buffer, message_buffer_len, THREAD); | |
| 143 } | |
| 6605 | 144 if (exception_name != NULL) { |
| 145 exception_message = split_verifier.exception_message(); | |
| 146 } | |
| 0 | 147 } else { |
| 148 exception_name = inference_verify( | |
| 149 klass, message_buffer, message_buffer_len, THREAD); | |
| 150 } | |
| 151 | |
| 6605 | 152 if (TraceClassInitialization || VerboseVerification) { |
| 0 | 153 if (HAS_PENDING_EXCEPTION) { |
| 154 tty->print("Verification for %s has", klassName); | |
| 155 tty->print_cr(" exception pending %s ", | |
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156 InstanceKlass::cast(PENDING_EXCEPTION->klass())->external_name()); |
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157 } else if (exception_name != NULL) { |
| 0 | 158 tty->print_cr("Verification for %s failed", klassName); |
| 159 } | |
| 160 tty->print_cr("End class verification for: %s", klassName); | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 if (HAS_PENDING_EXCEPTION) { | |
| 165 return false; // use the existing exception | |
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166 } else if (exception_name == NULL) { |
| 0 | 167 return true; // verifcation succeeded |
| 168 } else { // VerifyError or ClassFormatError to be created and thrown | |
| 169 ResourceMark rm(THREAD); | |
| 170 instanceKlassHandle kls = | |
| 171 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false); | |
| 172 while (!kls.is_null()) { | |
| 173 if (kls == klass) { | |
| 174 // If the class being verified is the exception we're creating | |
| 175 // or one of it's superclasses, we're in trouble and are going | |
| 176 // to infinitely recurse when we try to initialize the exception. | |
| 177 // So bail out here by throwing the preallocated VM error. | |
| 178 THROW_OOP_(Universe::virtual_machine_error_instance(), false); | |
| 179 } | |
| 180 kls = kls->super(); | |
| 181 } | |
| 182 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure | |
| 6605 | 183 THROW_MSG_(exception_name, exception_message, false); |
| 0 | 184 } |
| 185 } | |
| 186 | |
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187 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) { |
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188 Symbol* name = klass->name(); |
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189 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass(); |
| 0 | 190 |
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191 return (should_verify_for(klass->class_loader(), should_verify_class) && |
| 0 | 192 // return if the class is a bootstrapping class |
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193 // or defineClass specified not to verify by default (flags override passed arg) |
| 0 | 194 // We need to skip the following four for bootstraping |
| 195 name != vmSymbols::java_lang_Object() && | |
| 196 name != vmSymbols::java_lang_Class() && | |
| 197 name != vmSymbols::java_lang_String() && | |
| 198 name != vmSymbols::java_lang_Throwable() && | |
| 199 | |
| 200 // Can not verify the bytecodes for shared classes because they have | |
| 201 // already been rewritten to contain constant pool cache indices, | |
| 202 // which the verifier can't understand. | |
| 203 // Shared classes shouldn't have stackmaps either. | |
| 204 !klass()->is_shared() && | |
| 205 | |
| 206 // As of the fix for 4486457 we disable verification for all of the | |
| 207 // dynamically-generated bytecodes associated with the 1.4 | |
| 208 // reflection implementation, not just those associated with | |
| 209 // sun/reflect/SerializationConstructorAccessor. | |
| 210 // NOTE: this is called too early in the bootstrapping process to be | |
| 211 // guarded by Universe::is_gte_jdk14x_version()/UseNewReflection. | |
| 212 (refl_magic_klass == NULL || | |
| 213 !klass->is_subtype_of(refl_magic_klass) || | |
| 214 VerifyReflectionBytecodes) | |
| 215 ); | |
| 216 } | |
| 217 | |
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218 Symbol* Verifier::inference_verify( |
| 0 | 219 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) { |
| 220 JavaThread* thread = (JavaThread*)THREAD; | |
| 221 JNIEnv *env = thread->jni_environment(); | |
| 222 | |
| 223 void* verify_func = verify_byte_codes_fn(); | |
| 224 | |
| 225 if (verify_func == NULL) { | |
| 226 jio_snprintf(message, message_len, "Could not link verifier"); | |
| 227 return vmSymbols::java_lang_VerifyError(); | |
| 228 } | |
| 229 | |
| 230 ResourceMark rm(THREAD); | |
| 6605 | 231 if (VerboseVerification) { |
| 0 | 232 tty->print_cr("Verifying class %s with old format", klass->external_name()); |
| 233 } | |
| 234 | |
| 235 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror()); | |
| 236 jint result; | |
| 237 | |
| 238 { | |
| 239 HandleMark hm(thread); | |
| 240 ThreadToNativeFromVM ttn(thread); | |
| 241 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint | |
| 242 // code knows that we have left the VM | |
| 243 | |
| 244 if (_is_new_verify_byte_codes_fn) { | |
| 245 verify_byte_codes_fn_new_t func = | |
| 246 CAST_TO_FN_PTR(verify_byte_codes_fn_new_t, verify_func); | |
| 247 result = (*func)(env, cls, message, (int)message_len, | |
| 248 klass->major_version()); | |
| 249 } else { | |
| 250 verify_byte_codes_fn_t func = | |
| 251 CAST_TO_FN_PTR(verify_byte_codes_fn_t, verify_func); | |
| 252 result = (*func)(env, cls, message, (int)message_len); | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 JNIHandles::destroy_local(cls); | |
| 257 | |
| 258 // These numbers are chosen so that VerifyClassCodes interface doesn't need | |
| 259 // to be changed (still return jboolean (unsigned char)), and result is | |
| 260 // 1 when verification is passed. | |
| 261 if (result == 0) { | |
| 262 return vmSymbols::java_lang_VerifyError(); | |
| 263 } else if (result == 1) { | |
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264 return NULL; // verified. |
| 0 | 265 } else if (result == 2) { |
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266 THROW_MSG_(vmSymbols::java_lang_OutOfMemoryError(), message, NULL); |
| 0 | 267 } else if (result == 3) { |
| 268 return vmSymbols::java_lang_ClassFormatError(); | |
| 269 } else { | |
| 270 ShouldNotReachHere(); | |
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271 return NULL; |
| 0 | 272 } |
| 273 } | |
| 274 | |
| 6605 | 275 TypeOrigin TypeOrigin::null() { |
| 276 return TypeOrigin(); | |
| 277 } | |
| 278 TypeOrigin TypeOrigin::local(u2 index, StackMapFrame* frame) { | |
| 279 assert(frame != NULL, "Must have a frame"); | |
| 280 return TypeOrigin(CF_LOCALS, index, StackMapFrame::copy(frame), | |
| 281 frame->local_at(index)); | |
| 282 } | |
| 283 TypeOrigin TypeOrigin::stack(u2 index, StackMapFrame* frame) { | |
| 284 assert(frame != NULL, "Must have a frame"); | |
| 285 return TypeOrigin(CF_STACK, index, StackMapFrame::copy(frame), | |
| 286 frame->stack_at(index)); | |
| 287 } | |
| 288 TypeOrigin TypeOrigin::sm_local(u2 index, StackMapFrame* frame) { | |
| 289 assert(frame != NULL, "Must have a frame"); | |
| 290 return TypeOrigin(SM_LOCALS, index, StackMapFrame::copy(frame), | |
| 291 frame->local_at(index)); | |
| 292 } | |
| 293 TypeOrigin TypeOrigin::sm_stack(u2 index, StackMapFrame* frame) { | |
| 294 assert(frame != NULL, "Must have a frame"); | |
| 295 return TypeOrigin(SM_STACK, index, StackMapFrame::copy(frame), | |
| 296 frame->stack_at(index)); | |
| 297 } | |
| 298 TypeOrigin TypeOrigin::bad_index(u2 index) { | |
| 299 return TypeOrigin(BAD_INDEX, index, NULL, VerificationType::bogus_type()); | |
| 300 } | |
| 301 TypeOrigin TypeOrigin::cp(u2 index, VerificationType vt) { | |
| 302 return TypeOrigin(CONST_POOL, index, NULL, vt); | |
| 303 } | |
| 304 TypeOrigin TypeOrigin::signature(VerificationType vt) { | |
| 305 return TypeOrigin(SIG, 0, NULL, vt); | |
| 306 } | |
| 307 TypeOrigin TypeOrigin::implicit(VerificationType t) { | |
| 308 return TypeOrigin(IMPLICIT, 0, NULL, t); | |
| 309 } | |
| 310 TypeOrigin TypeOrigin::frame(StackMapFrame* frame) { | |
| 311 return TypeOrigin(FRAME_ONLY, 0, StackMapFrame::copy(frame), | |
| 312 VerificationType::bogus_type()); | |
| 313 } | |
| 314 | |
| 315 void TypeOrigin::reset_frame() { | |
| 316 if (_frame != NULL) { | |
| 317 _frame->restore(); | |
| 318 } | |
| 319 } | |
| 320 | |
| 321 void TypeOrigin::details(outputStream* ss) const { | |
| 322 _type.print_on(ss); | |
| 323 switch (_origin) { | |
| 324 case CF_LOCALS: | |
| 325 ss->print(" (current frame, locals[%d])", _index); | |
| 326 break; | |
| 327 case CF_STACK: | |
| 328 ss->print(" (current frame, stack[%d])", _index); | |
| 329 break; | |
| 330 case SM_LOCALS: | |
| 331 ss->print(" (stack map, locals[%d])", _index); | |
| 332 break; | |
| 333 case SM_STACK: | |
| 334 ss->print(" (stack map, stack[%d])", _index); | |
| 335 break; | |
| 336 case CONST_POOL: | |
| 337 ss->print(" (constant pool %d)", _index); | |
| 338 break; | |
| 339 case SIG: | |
| 340 ss->print(" (from method signature)"); | |
| 341 break; | |
| 342 case IMPLICIT: | |
| 343 case FRAME_ONLY: | |
| 344 case NONE: | |
| 345 default: | |
| 346 ; | |
| 347 } | |
| 348 } | |
| 349 | |
| 350 #ifdef ASSERT | |
| 351 void TypeOrigin::print_on(outputStream* str) const { | |
| 352 str->print("{%d,%d,%p:", _origin, _index, _frame); | |
| 353 if (_frame != NULL) { | |
| 354 _frame->print_on(str); | |
| 355 } else { | |
| 356 str->print("null"); | |
| 357 } | |
| 358 str->print(","); | |
| 359 _type.print_on(str); | |
| 360 str->print("}"); | |
| 361 } | |
| 362 #endif | |
| 363 | |
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364 void ErrorContext::details(outputStream* ss, Method* method) const { |
| 6605 | 365 if (is_valid()) { |
| 366 ss->print_cr(""); | |
| 367 ss->print_cr("Exception Details:"); | |
| 368 location_details(ss, method); | |
| 369 reason_details(ss); | |
| 370 frame_details(ss); | |
| 371 bytecode_details(ss, method); | |
| 372 handler_details(ss, method); | |
| 373 stackmap_details(ss, method); | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 void ErrorContext::reason_details(outputStream* ss) const { | |
| 378 streamIndentor si(ss); | |
| 379 ss->indent().print_cr("Reason:"); | |
| 380 streamIndentor si2(ss); | |
| 381 ss->indent().print(""); | |
| 382 switch (_fault) { | |
| 383 case INVALID_BYTECODE: | |
| 384 ss->print("Error exists in the bytecode"); | |
| 385 break; | |
| 386 case WRONG_TYPE: | |
| 387 if (_expected.is_valid()) { | |
| 388 ss->print("Type "); | |
| 389 _type.details(ss); | |
| 390 ss->print(" is not assignable to "); | |
| 391 _expected.details(ss); | |
| 392 } else { | |
| 393 ss->print("Invalid type: "); | |
| 394 _type.details(ss); | |
| 395 } | |
| 396 break; | |
| 397 case FLAGS_MISMATCH: | |
| 398 if (_expected.is_valid()) { | |
| 399 ss->print("Current frame's flags are not assignable " | |
| 400 "to stack map frame's."); | |
| 401 } else { | |
| 402 ss->print("Current frame's flags are invalid in this context."); | |
| 403 } | |
| 404 break; | |
| 405 case BAD_CP_INDEX: | |
| 406 ss->print("Constant pool index %d is invalid", _type.index()); | |
| 407 break; | |
| 408 case BAD_LOCAL_INDEX: | |
| 409 ss->print("Local index %d is invalid", _type.index()); | |
| 410 break; | |
| 411 case LOCALS_SIZE_MISMATCH: | |
| 412 ss->print("Current frame's local size doesn't match stackmap."); | |
| 413 break; | |
| 414 case STACK_SIZE_MISMATCH: | |
| 415 ss->print("Current frame's stack size doesn't match stackmap."); | |
| 416 break; | |
| 417 case STACK_OVERFLOW: | |
| 418 ss->print("Exceeded max stack size."); | |
| 419 break; | |
| 420 case STACK_UNDERFLOW: | |
| 421 ss->print("Attempt to pop empty stack."); | |
| 422 break; | |
| 423 case MISSING_STACKMAP: | |
| 424 ss->print("Expected stackmap frame at this location."); | |
| 425 break; | |
| 426 case BAD_STACKMAP: | |
| 427 ss->print("Invalid stackmap specification."); | |
| 428 break; | |
| 429 case UNKNOWN: | |
| 430 default: | |
| 431 ShouldNotReachHere(); | |
| 432 ss->print_cr("Unknown"); | |
| 433 } | |
| 434 ss->print_cr(""); | |
| 435 } | |
| 436 | |
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437 void ErrorContext::location_details(outputStream* ss, Method* method) const { |
| 6605 | 438 if (_bci != -1 && method != NULL) { |
| 439 streamIndentor si(ss); | |
| 440 const char* bytecode_name = "<invalid>"; | |
| 441 if (method->validate_bci_from_bcx(_bci) != -1) { | |
| 442 Bytecodes::Code code = Bytecodes::code_or_bp_at(method->bcp_from(_bci)); | |
| 443 if (Bytecodes::is_defined(code)) { | |
| 444 bytecode_name = Bytecodes::name(code); | |
| 445 } else { | |
| 446 bytecode_name = "<illegal>"; | |
| 447 } | |
| 448 } | |
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449 InstanceKlass* ik = InstanceKlass::cast(method->method_holder()); |
| 6605 | 450 ss->indent().print_cr("Location:"); |
| 451 streamIndentor si2(ss); | |
| 452 ss->indent().print_cr("%s.%s%s @%d: %s", | |
| 453 ik->name()->as_C_string(), method->name()->as_C_string(), | |
| 454 method->signature()->as_C_string(), _bci, bytecode_name); | |
| 455 } | |
| 456 } | |
| 457 | |
| 458 void ErrorContext::frame_details(outputStream* ss) const { | |
| 459 streamIndentor si(ss); | |
| 460 if (_type.is_valid() && _type.frame() != NULL) { | |
| 461 ss->indent().print_cr("Current Frame:"); | |
| 462 streamIndentor si2(ss); | |
| 463 _type.frame()->print_on(ss); | |
| 464 } | |
| 465 if (_expected.is_valid() && _expected.frame() != NULL) { | |
| 466 ss->indent().print_cr("Stackmap Frame:"); | |
| 467 streamIndentor si2(ss); | |
| 468 _expected.frame()->print_on(ss); | |
| 469 } | |
| 470 } | |
| 471 | |
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472 void ErrorContext::bytecode_details(outputStream* ss, Method* method) const { |
| 6605 | 473 if (method != NULL) { |
| 474 streamIndentor si(ss); | |
| 475 ss->indent().print_cr("Bytecode:"); | |
| 476 streamIndentor si2(ss); | |
| 477 ss->print_data(method->code_base(), method->code_size(), false); | |
| 478 } | |
| 479 } | |
| 480 | |
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481 void ErrorContext::handler_details(outputStream* ss, Method* method) const { |
| 6605 | 482 if (method != NULL) { |
| 483 streamIndentor si(ss); | |
| 484 ExceptionTable table(method); | |
| 485 if (table.length() > 0) { | |
| 486 ss->indent().print_cr("Exception Handler Table:"); | |
| 487 streamIndentor si2(ss); | |
| 488 for (int i = 0; i < table.length(); ++i) { | |
| 489 ss->indent().print_cr("bci [%d, %d] => handler: %d", table.start_pc(i), | |
| 490 table.end_pc(i), table.handler_pc(i)); | |
| 491 } | |
| 492 } | |
| 493 } | |
| 494 } | |
| 495 | |
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496 void ErrorContext::stackmap_details(outputStream* ss, Method* method) const { |
| 6605 | 497 if (method != NULL && method->has_stackmap_table()) { |
| 498 streamIndentor si(ss); | |
| 499 ss->indent().print_cr("Stackmap Table:"); | |
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500 Array<u1>* data = method->stackmap_data(); |
| 6605 | 501 stack_map_table* sm_table = |
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502 stack_map_table::at((address)data->adr_at(0)); |
| 6605 | 503 stack_map_frame* sm_frame = sm_table->entries(); |
| 504 streamIndentor si2(ss); | |
| 505 int current_offset = -1; | |
| 506 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) { | |
| 507 ss->indent(); | |
| 508 sm_frame->print_on(ss, current_offset); | |
| 509 ss->print_cr(""); | |
| 510 current_offset += sm_frame->offset_delta(); | |
| 511 sm_frame = sm_frame->next(); | |
| 512 } | |
| 513 } | |
| 514 } | |
| 515 | |
| 0 | 516 // Methods in ClassVerifier |
| 517 | |
| 518 ClassVerifier::ClassVerifier( | |
| 6605 | 519 instanceKlassHandle klass, TRAPS) |
| 520 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) { | |
| 0 | 521 _this_type = VerificationType::reference_type(klass->name()); |
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522 // Create list to hold symbols in reference area. |
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523 _symbols = new GrowableArray<Symbol*>(100, 0, NULL); |
| 0 | 524 } |
| 525 | |
| 526 ClassVerifier::~ClassVerifier() { | |
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527 // Decrement the reference count for any symbols created. |
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528 for (int i = 0; i < _symbols->length(); i++) { |
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529 Symbol* s = _symbols->at(i); |
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530 s->decrement_refcount(); |
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531 } |
| 0 | 532 } |
| 533 | |
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534 VerificationType ClassVerifier::object_type() const { |
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535 return VerificationType::reference_type(vmSymbols::java_lang_Object()); |
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536 } |
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537 |
| 6605 | 538 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) { |
| 539 VerificationType vt = VerificationType::reference_type( | |
| 540 create_temporary_symbol(sig, (int)strlen(sig), THREAD)); | |
| 541 return TypeOrigin::implicit(vt); | |
| 542 } | |
| 543 | |
| 0 | 544 void ClassVerifier::verify_class(TRAPS) { |
| 6605 | 545 if (VerboseVerification) { |
| 0 | 546 tty->print_cr("Verifying class %s with new format", |
| 547 _klass->external_name()); | |
| 548 } | |
| 549 | |
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550 Array<Method*>* methods = _klass->methods(); |
| 0 | 551 int num_methods = methods->length(); |
| 552 | |
| 553 for (int index = 0; index < num_methods; index++) { | |
| 1570 | 554 // Check for recursive re-verification before each method. |
| 555 if (was_recursively_verified()) return; | |
| 556 | |
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557 Method* m = methods->at(index); |
| 6934 | 558 if (m->is_native() || m->is_abstract() || m->is_overpass()) { |
| 0 | 559 // If m is native or abstract, skip it. It is checked in class file |
| 6934 | 560 // parser that methods do not override a final method. Overpass methods |
| 561 // are trusted since the VM generates them. | |
| 0 | 562 continue; |
| 563 } | |
| 564 verify_method(methodHandle(THREAD, m), CHECK_VERIFY(this)); | |
| 565 } | |
| 1570 | 566 |
| 6605 | 567 if (VerboseVerification || TraceClassInitialization) { |
| 1570 | 568 if (was_recursively_verified()) |
| 569 tty->print_cr("Recursive verification detected for: %s", | |
| 570 _klass->external_name()); | |
| 571 } | |
| 0 | 572 } |
| 573 | |
| 574 void ClassVerifier::verify_method(methodHandle m, TRAPS) { | |
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575 HandleMark hm(THREAD); |
| 0 | 576 _method = m; // initialize _method |
| 6605 | 577 if (VerboseVerification) { |
| 0 | 578 tty->print_cr("Verifying method %s", m->name_and_sig_as_C_string()); |
| 579 } | |
| 580 | |
| 581 const char* bad_type_msg = "Bad type on operand stack in %s"; | |
| 582 | |
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583 int32_t max_stack = m->verifier_max_stack(); |
| 0 | 584 int32_t max_locals = m->max_locals(); |
| 585 constantPoolHandle cp(THREAD, m->constants()); | |
| 586 | |
| 587 if (!SignatureVerifier::is_valid_method_signature(m->signature())) { | |
| 588 class_format_error("Invalid method signature"); | |
| 589 return; | |
| 590 } | |
| 591 | |
| 592 // Initial stack map frame: offset is 0, stack is initially empty. | |
| 593 StackMapFrame current_frame(max_locals, max_stack, this); | |
| 594 // Set initial locals | |
| 595 VerificationType return_type = current_frame.set_locals_from_arg( | |
| 596 m, current_type(), CHECK_VERIFY(this)); | |
| 597 | |
| 598 int32_t stackmap_index = 0; // index to the stackmap array | |
| 599 | |
| 600 u4 code_length = m->code_size(); | |
| 601 | |
| 602 // Scan the bytecode and map each instruction's start offset to a number. | |
| 603 char* code_data = generate_code_data(m, code_length, CHECK_VERIFY(this)); | |
| 604 | |
| 605 int ex_min = code_length; | |
| 606 int ex_max = -1; | |
| 607 // Look through each item on the exception table. Each of the fields must refer | |
| 608 // to a legal instruction. | |
| 609 verify_exception_handler_table( | |
| 610 code_length, code_data, ex_min, ex_max, CHECK_VERIFY(this)); | |
| 611 | |
| 612 // Look through each entry on the local variable table and make sure | |
| 613 // its range of code array offsets is valid. (4169817) | |
| 614 if (m->has_localvariable_table()) { | |
| 615 verify_local_variable_table(code_length, code_data, CHECK_VERIFY(this)); | |
| 616 } | |
| 617 | |
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618 Array<u1>* stackmap_data = m->stackmap_data(); |
| 0 | 619 StackMapStream stream(stackmap_data); |
| 620 StackMapReader reader(this, &stream, code_data, code_length, THREAD); | |
| 621 StackMapTable stackmap_table(&reader, ¤t_frame, max_locals, max_stack, | |
| 622 code_data, code_length, CHECK_VERIFY(this)); | |
| 623 | |
| 6605 | 624 if (VerboseVerification) { |
| 625 stackmap_table.print_on(tty); | |
| 0 | 626 } |
| 627 | |
| 628 RawBytecodeStream bcs(m); | |
| 629 | |
| 630 // Scan the byte code linearly from the start to the end | |
| 631 bool no_control_flow = false; // Set to true when there is no direct control | |
| 632 // flow from current instruction to the next | |
| 633 // instruction in sequence | |
| 634 Bytecodes::Code opcode; | |
| 635 while (!bcs.is_last_bytecode()) { | |
| 1570 | 636 // Check for recursive re-verification before each bytecode. |
| 637 if (was_recursively_verified()) return; | |
| 638 | |
| 0 | 639 opcode = bcs.raw_next(); |
| 640 u2 bci = bcs.bci(); | |
| 641 | |
| 642 // Set current frame's offset to bci | |
| 643 current_frame.set_offset(bci); | |
| 6605 | 644 current_frame.set_mark(); |
| 0 | 645 |
| 646 // Make sure every offset in stackmap table point to the beginning to | |
| 647 // an instruction. Match current_frame to stackmap_table entry with | |
| 648 // the same offset if exists. | |
| 649 stackmap_index = verify_stackmap_table( | |
| 650 stackmap_index, bci, ¤t_frame, &stackmap_table, | |
| 651 no_control_flow, CHECK_VERIFY(this)); | |
| 652 | |
| 6605 | 653 |
| 0 | 654 bool this_uninit = false; // Set to true when invokespecial <init> initialized 'this' |
| 655 | |
| 656 // Merge with the next instruction | |
| 657 { | |
| 658 u2 index; | |
| 659 int target; | |
| 660 VerificationType type, type2; | |
| 661 VerificationType atype; | |
| 662 | |
| 663 #ifndef PRODUCT | |
| 6605 | 664 if (VerboseVerification) { |
| 665 current_frame.print_on(tty); | |
| 0 | 666 tty->print_cr("offset = %d, opcode = %s", bci, Bytecodes::name(opcode)); |
| 667 } | |
| 668 #endif | |
| 669 | |
| 670 // Make sure wide instruction is in correct format | |
| 671 if (bcs.is_wide()) { | |
| 672 if (opcode != Bytecodes::_iinc && opcode != Bytecodes::_iload && | |
| 673 opcode != Bytecodes::_aload && opcode != Bytecodes::_lload && | |
| 674 opcode != Bytecodes::_istore && opcode != Bytecodes::_astore && | |
| 675 opcode != Bytecodes::_lstore && opcode != Bytecodes::_fload && | |
| 676 opcode != Bytecodes::_dload && opcode != Bytecodes::_fstore && | |
| 677 opcode != Bytecodes::_dstore) { | |
| 6605 | 678 /* Unreachable? RawBytecodeStream's raw_next() returns 'illegal' |
| 679 * if we encounter a wide instruction that modifies an invalid | |
| 680 * opcode (not one of the ones listed above) */ | |
| 681 verify_error(ErrorContext::bad_code(bci), "Bad wide instruction"); | |
| 0 | 682 return; |
| 683 } | |
| 684 } | |
| 685 | |
| 686 switch (opcode) { | |
| 687 case Bytecodes::_nop : | |
| 688 no_control_flow = false; break; | |
| 689 case Bytecodes::_aconst_null : | |
| 690 current_frame.push_stack( | |
| 691 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 692 no_control_flow = false; break; | |
| 693 case Bytecodes::_iconst_m1 : | |
| 694 case Bytecodes::_iconst_0 : | |
| 695 case Bytecodes::_iconst_1 : | |
| 696 case Bytecodes::_iconst_2 : | |
| 697 case Bytecodes::_iconst_3 : | |
| 698 case Bytecodes::_iconst_4 : | |
| 699 case Bytecodes::_iconst_5 : | |
| 700 current_frame.push_stack( | |
| 701 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 702 no_control_flow = false; break; | |
| 703 case Bytecodes::_lconst_0 : | |
| 704 case Bytecodes::_lconst_1 : | |
| 705 current_frame.push_stack_2( | |
| 706 VerificationType::long_type(), | |
| 707 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 708 no_control_flow = false; break; | |
| 709 case Bytecodes::_fconst_0 : | |
| 710 case Bytecodes::_fconst_1 : | |
| 711 case Bytecodes::_fconst_2 : | |
| 712 current_frame.push_stack( | |
| 713 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 714 no_control_flow = false; break; | |
| 715 case Bytecodes::_dconst_0 : | |
| 716 case Bytecodes::_dconst_1 : | |
| 717 current_frame.push_stack_2( | |
| 718 VerificationType::double_type(), | |
| 719 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 720 no_control_flow = false; break; | |
| 721 case Bytecodes::_sipush : | |
| 722 case Bytecodes::_bipush : | |
| 723 current_frame.push_stack( | |
| 724 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 725 no_control_flow = false; break; | |
| 726 case Bytecodes::_ldc : | |
| 727 verify_ldc( | |
| 1565 | 728 opcode, bcs.get_index_u1(), ¤t_frame, |
| 0 | 729 cp, bci, CHECK_VERIFY(this)); |
| 730 no_control_flow = false; break; | |
| 731 case Bytecodes::_ldc_w : | |
| 732 case Bytecodes::_ldc2_w : | |
| 733 verify_ldc( | |
| 1565 | 734 opcode, bcs.get_index_u2(), ¤t_frame, |
| 0 | 735 cp, bci, CHECK_VERIFY(this)); |
| 736 no_control_flow = false; break; | |
| 737 case Bytecodes::_iload : | |
| 738 verify_iload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 739 no_control_flow = false; break; | |
| 740 case Bytecodes::_iload_0 : | |
| 741 case Bytecodes::_iload_1 : | |
| 742 case Bytecodes::_iload_2 : | |
| 743 case Bytecodes::_iload_3 : | |
| 744 index = opcode - Bytecodes::_iload_0; | |
| 745 verify_iload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 746 no_control_flow = false; break; | |
| 747 case Bytecodes::_lload : | |
| 748 verify_lload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 749 no_control_flow = false; break; | |
| 750 case Bytecodes::_lload_0 : | |
| 751 case Bytecodes::_lload_1 : | |
| 752 case Bytecodes::_lload_2 : | |
| 753 case Bytecodes::_lload_3 : | |
| 754 index = opcode - Bytecodes::_lload_0; | |
| 755 verify_lload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 756 no_control_flow = false; break; | |
| 757 case Bytecodes::_fload : | |
| 758 verify_fload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 759 no_control_flow = false; break; | |
| 760 case Bytecodes::_fload_0 : | |
| 761 case Bytecodes::_fload_1 : | |
| 762 case Bytecodes::_fload_2 : | |
| 763 case Bytecodes::_fload_3 : | |
| 764 index = opcode - Bytecodes::_fload_0; | |
| 765 verify_fload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 766 no_control_flow = false; break; | |
| 767 case Bytecodes::_dload : | |
| 768 verify_dload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 769 no_control_flow = false; break; | |
| 770 case Bytecodes::_dload_0 : | |
| 771 case Bytecodes::_dload_1 : | |
| 772 case Bytecodes::_dload_2 : | |
| 773 case Bytecodes::_dload_3 : | |
| 774 index = opcode - Bytecodes::_dload_0; | |
| 775 verify_dload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 776 no_control_flow = false; break; | |
| 777 case Bytecodes::_aload : | |
| 778 verify_aload(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 779 no_control_flow = false; break; | |
| 780 case Bytecodes::_aload_0 : | |
| 781 case Bytecodes::_aload_1 : | |
| 782 case Bytecodes::_aload_2 : | |
| 783 case Bytecodes::_aload_3 : | |
| 784 index = opcode - Bytecodes::_aload_0; | |
| 785 verify_aload(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 786 no_control_flow = false; break; | |
| 787 case Bytecodes::_iaload : | |
| 788 type = current_frame.pop_stack( | |
| 789 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 790 atype = current_frame.pop_stack( | |
| 791 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 792 if (!atype.is_int_array()) { | |
| 6605 | 793 verify_error(ErrorContext::bad_type(bci, |
| 794 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 795 bad_type_msg, "iaload"); | |
| 0 | 796 return; |
| 797 } | |
| 798 current_frame.push_stack( | |
| 799 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 800 no_control_flow = false; break; | |
| 801 case Bytecodes::_baload : | |
| 802 type = current_frame.pop_stack( | |
| 803 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 804 atype = current_frame.pop_stack( | |
| 805 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 806 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 807 verify_error( |
| 808 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 809 bad_type_msg, "baload"); | |
| 0 | 810 return; |
| 811 } | |
| 812 current_frame.push_stack( | |
| 813 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 814 no_control_flow = false; break; | |
| 815 case Bytecodes::_caload : | |
| 816 type = current_frame.pop_stack( | |
| 817 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 818 atype = current_frame.pop_stack( | |
| 819 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 820 if (!atype.is_char_array()) { | |
| 6605 | 821 verify_error(ErrorContext::bad_type(bci, |
| 822 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 823 bad_type_msg, "caload"); | |
| 0 | 824 return; |
| 825 } | |
| 826 current_frame.push_stack( | |
| 827 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 828 no_control_flow = false; break; | |
| 829 case Bytecodes::_saload : | |
| 830 type = current_frame.pop_stack( | |
| 831 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 832 atype = current_frame.pop_stack( | |
| 833 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 834 if (!atype.is_short_array()) { | |
| 6605 | 835 verify_error(ErrorContext::bad_type(bci, |
| 836 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 837 bad_type_msg, "saload"); | |
| 0 | 838 return; |
| 839 } | |
| 840 current_frame.push_stack( | |
| 841 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 842 no_control_flow = false; break; | |
| 843 case Bytecodes::_laload : | |
| 844 type = current_frame.pop_stack( | |
| 845 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 846 atype = current_frame.pop_stack( | |
| 847 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 848 if (!atype.is_long_array()) { | |
| 6605 | 849 verify_error(ErrorContext::bad_type(bci, |
| 850 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 851 bad_type_msg, "laload"); | |
| 0 | 852 return; |
| 853 } | |
| 854 current_frame.push_stack_2( | |
| 855 VerificationType::long_type(), | |
| 856 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 857 no_control_flow = false; break; | |
| 858 case Bytecodes::_faload : | |
| 859 type = current_frame.pop_stack( | |
| 860 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 861 atype = current_frame.pop_stack( | |
| 862 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 863 if (!atype.is_float_array()) { | |
| 6605 | 864 verify_error(ErrorContext::bad_type(bci, |
| 865 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 866 bad_type_msg, "faload"); | |
| 0 | 867 return; |
| 868 } | |
| 869 current_frame.push_stack( | |
| 870 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 871 no_control_flow = false; break; | |
| 872 case Bytecodes::_daload : | |
| 873 type = current_frame.pop_stack( | |
| 874 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 875 atype = current_frame.pop_stack( | |
| 876 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 877 if (!atype.is_double_array()) { | |
| 6605 | 878 verify_error(ErrorContext::bad_type(bci, |
| 879 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 880 bad_type_msg, "daload"); | |
| 0 | 881 return; |
| 882 } | |
| 883 current_frame.push_stack_2( | |
| 884 VerificationType::double_type(), | |
| 885 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 886 no_control_flow = false; break; | |
| 887 case Bytecodes::_aaload : { | |
| 888 type = current_frame.pop_stack( | |
| 889 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 890 atype = current_frame.pop_stack( | |
| 891 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 892 if (!atype.is_reference_array()) { | |
| 6605 | 893 verify_error(ErrorContext::bad_type(bci, |
| 894 current_frame.stack_top_ctx(), | |
| 895 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 896 bad_type_msg, "aaload"); | |
| 0 | 897 return; |
| 898 } | |
| 899 if (atype.is_null()) { | |
| 900 current_frame.push_stack( | |
| 901 VerificationType::null_type(), CHECK_VERIFY(this)); | |
| 902 } else { | |
| 903 VerificationType component = | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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1980
diff
changeset
|
904 atype.get_component(this, CHECK_VERIFY(this)); |
| 0 | 905 current_frame.push_stack(component, CHECK_VERIFY(this)); |
| 906 } | |
| 907 no_control_flow = false; break; | |
| 908 } | |
| 909 case Bytecodes::_istore : | |
| 910 verify_istore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 911 no_control_flow = false; break; | |
| 912 case Bytecodes::_istore_0 : | |
| 913 case Bytecodes::_istore_1 : | |
| 914 case Bytecodes::_istore_2 : | |
| 915 case Bytecodes::_istore_3 : | |
| 916 index = opcode - Bytecodes::_istore_0; | |
| 917 verify_istore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 918 no_control_flow = false; break; | |
| 919 case Bytecodes::_lstore : | |
| 920 verify_lstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 921 no_control_flow = false; break; | |
| 922 case Bytecodes::_lstore_0 : | |
| 923 case Bytecodes::_lstore_1 : | |
| 924 case Bytecodes::_lstore_2 : | |
| 925 case Bytecodes::_lstore_3 : | |
| 926 index = opcode - Bytecodes::_lstore_0; | |
| 927 verify_lstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 928 no_control_flow = false; break; | |
| 929 case Bytecodes::_fstore : | |
| 930 verify_fstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 931 no_control_flow = false; break; | |
| 932 case Bytecodes::_fstore_0 : | |
| 933 case Bytecodes::_fstore_1 : | |
| 934 case Bytecodes::_fstore_2 : | |
| 935 case Bytecodes::_fstore_3 : | |
| 936 index = opcode - Bytecodes::_fstore_0; | |
| 937 verify_fstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 938 no_control_flow = false; break; | |
| 939 case Bytecodes::_dstore : | |
| 940 verify_dstore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 941 no_control_flow = false; break; | |
| 942 case Bytecodes::_dstore_0 : | |
| 943 case Bytecodes::_dstore_1 : | |
| 944 case Bytecodes::_dstore_2 : | |
| 945 case Bytecodes::_dstore_3 : | |
| 946 index = opcode - Bytecodes::_dstore_0; | |
| 947 verify_dstore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 948 no_control_flow = false; break; | |
| 949 case Bytecodes::_astore : | |
| 950 verify_astore(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 951 no_control_flow = false; break; | |
| 952 case Bytecodes::_astore_0 : | |
| 953 case Bytecodes::_astore_1 : | |
| 954 case Bytecodes::_astore_2 : | |
| 955 case Bytecodes::_astore_3 : | |
| 956 index = opcode - Bytecodes::_astore_0; | |
| 957 verify_astore(index, ¤t_frame, CHECK_VERIFY(this)); | |
| 958 no_control_flow = false; break; | |
| 959 case Bytecodes::_iastore : | |
| 960 type = current_frame.pop_stack( | |
| 961 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 962 type2 = current_frame.pop_stack( | |
| 963 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 964 atype = current_frame.pop_stack( | |
| 965 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 966 if (!atype.is_int_array()) { | |
| 6605 | 967 verify_error(ErrorContext::bad_type(bci, |
| 968 current_frame.stack_top_ctx(), ref_ctx("[I", THREAD)), | |
| 969 bad_type_msg, "iastore"); | |
| 0 | 970 return; |
| 971 } | |
| 972 no_control_flow = false; break; | |
| 973 case Bytecodes::_bastore : | |
| 974 type = current_frame.pop_stack( | |
| 975 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 976 type2 = current_frame.pop_stack( | |
| 977 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 978 atype = current_frame.pop_stack( | |
| 979 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 980 if (!atype.is_bool_array() && !atype.is_byte_array()) { | |
| 6605 | 981 verify_error( |
| 982 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 983 bad_type_msg, "bastore"); | |
| 0 | 984 return; |
| 985 } | |
| 986 no_control_flow = false; break; | |
| 987 case Bytecodes::_castore : | |
| 988 current_frame.pop_stack( | |
| 989 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 990 current_frame.pop_stack( | |
| 991 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 992 atype = current_frame.pop_stack( | |
| 993 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 994 if (!atype.is_char_array()) { | |
| 6605 | 995 verify_error(ErrorContext::bad_type(bci, |
| 996 current_frame.stack_top_ctx(), ref_ctx("[C", THREAD)), | |
| 997 bad_type_msg, "castore"); | |
| 0 | 998 return; |
| 999 } | |
| 1000 no_control_flow = false; break; | |
| 1001 case Bytecodes::_sastore : | |
| 1002 current_frame.pop_stack( | |
| 1003 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1004 current_frame.pop_stack( | |
| 1005 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1006 atype = current_frame.pop_stack( | |
| 1007 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1008 if (!atype.is_short_array()) { | |
| 6605 | 1009 verify_error(ErrorContext::bad_type(bci, |
| 1010 current_frame.stack_top_ctx(), ref_ctx("[S", THREAD)), | |
| 1011 bad_type_msg, "sastore"); | |
| 0 | 1012 return; |
| 1013 } | |
| 1014 no_control_flow = false; break; | |
| 1015 case Bytecodes::_lastore : | |
| 1016 current_frame.pop_stack_2( | |
| 1017 VerificationType::long2_type(), | |
| 1018 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1019 current_frame.pop_stack( | |
| 1020 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1021 atype = current_frame.pop_stack( | |
| 1022 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1023 if (!atype.is_long_array()) { | |
| 6605 | 1024 verify_error(ErrorContext::bad_type(bci, |
| 1025 current_frame.stack_top_ctx(), ref_ctx("[J", THREAD)), | |
| 1026 bad_type_msg, "lastore"); | |
| 0 | 1027 return; |
| 1028 } | |
| 1029 no_control_flow = false; break; | |
| 1030 case Bytecodes::_fastore : | |
| 1031 current_frame.pop_stack( | |
| 1032 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1033 current_frame.pop_stack | |
| 1034 (VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1035 atype = current_frame.pop_stack( | |
| 1036 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1037 if (!atype.is_float_array()) { | |
| 6605 | 1038 verify_error(ErrorContext::bad_type(bci, |
| 1039 current_frame.stack_top_ctx(), ref_ctx("[F", THREAD)), | |
| 1040 bad_type_msg, "fastore"); | |
| 0 | 1041 return; |
| 1042 } | |
| 1043 no_control_flow = false; break; | |
| 1044 case Bytecodes::_dastore : | |
| 1045 current_frame.pop_stack_2( | |
| 1046 VerificationType::double2_type(), | |
| 1047 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1048 current_frame.pop_stack( | |
| 1049 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1050 atype = current_frame.pop_stack( | |
| 1051 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1052 if (!atype.is_double_array()) { | |
| 6605 | 1053 verify_error(ErrorContext::bad_type(bci, |
| 1054 current_frame.stack_top_ctx(), ref_ctx("[D", THREAD)), | |
| 1055 bad_type_msg, "dastore"); | |
| 0 | 1056 return; |
| 1057 } | |
| 1058 no_control_flow = false; break; | |
| 1059 case Bytecodes::_aastore : | |
|
1955
1070423b51f3
6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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parents:
1678
diff
changeset
|
1060 type = current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1061 type2 = current_frame.pop_stack( |
| 1062 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1063 atype = current_frame.pop_stack( | |
| 1064 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1065 // more type-checking is done at runtime | |
| 1066 if (!atype.is_reference_array()) { | |
| 6605 | 1067 verify_error(ErrorContext::bad_type(bci, |
| 1068 current_frame.stack_top_ctx(), | |
| 1069 TypeOrigin::implicit(VerificationType::reference_check())), | |
| 1070 bad_type_msg, "aastore"); | |
| 0 | 1071 return; |
| 1072 } | |
| 1073 // 4938384: relaxed constraint in JVMS 3nd edition. | |
| 1074 no_control_flow = false; break; | |
| 1075 case Bytecodes::_pop : | |
| 1076 current_frame.pop_stack( | |
| 1077 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1078 no_control_flow = false; break; | |
| 1079 case Bytecodes::_pop2 : | |
| 1080 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1081 if (type.is_category1()) { | |
| 1082 current_frame.pop_stack( | |
| 1083 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1084 } else if (type.is_category2_2nd()) { | |
| 1085 current_frame.pop_stack( | |
| 1086 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1087 } else { | |
| 6605 | 1088 /* Unreachable? Would need a category2_1st on TOS |
| 1089 * which does not appear possible. */ | |
| 1090 verify_error( | |
| 1091 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1092 bad_type_msg, "pop2"); | |
| 0 | 1093 return; |
| 1094 } | |
| 1095 no_control_flow = false; break; | |
| 1096 case Bytecodes::_dup : | |
| 1097 type = current_frame.pop_stack( | |
| 1098 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1099 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1100 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1101 no_control_flow = false; break; | |
| 1102 case Bytecodes::_dup_x1 : | |
| 1103 type = current_frame.pop_stack( | |
| 1104 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1105 type2 = current_frame.pop_stack( | |
| 1106 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1107 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1108 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1109 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1110 no_control_flow = false; break; | |
| 1111 case Bytecodes::_dup_x2 : | |
| 1112 { | |
| 1113 VerificationType type3; | |
| 1114 type = current_frame.pop_stack( | |
| 1115 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1116 type2 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1117 if (type2.is_category1()) { | |
| 1118 type3 = current_frame.pop_stack( | |
| 1119 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1120 } else if (type2.is_category2_2nd()) { | |
| 1121 type3 = current_frame.pop_stack( | |
| 1122 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1123 } else { | |
| 6605 | 1124 /* Unreachable? Would need a category2_1st at stack depth 2 with |
| 1125 * a category1 on TOS which does not appear possible. */ | |
| 1126 verify_error(ErrorContext::bad_type( | |
| 1127 bci, current_frame.stack_top_ctx()), bad_type_msg, "dup_x2"); | |
| 0 | 1128 return; |
| 1129 } | |
| 1130 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1131 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1132 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1133 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1134 no_control_flow = false; break; | |
| 1135 } | |
| 1136 case Bytecodes::_dup2 : | |
| 1137 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1138 if (type.is_category1()) { | |
| 1139 type2 = current_frame.pop_stack( | |
| 1140 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1141 } else if (type.is_category2_2nd()) { | |
| 1142 type2 = current_frame.pop_stack( | |
| 1143 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1144 } else { | |
| 6605 | 1145 /* Unreachable? Would need a category2_1st on TOS which does not |
| 1146 * appear possible. */ | |
| 1147 verify_error( | |
| 1148 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1149 bad_type_msg, "dup2"); | |
| 0 | 1150 return; |
| 1151 } | |
| 1152 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1153 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1154 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1155 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1156 no_control_flow = false; break; | |
| 1157 case Bytecodes::_dup2_x1 : | |
| 1158 { | |
| 1159 VerificationType type3; | |
| 1160 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1161 if (type.is_category1()) { | |
| 1162 type2 = current_frame.pop_stack( | |
| 1163 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 6605 | 1164 } else if (type.is_category2_2nd()) { |
| 1165 type2 = current_frame.pop_stack( | |
| 1166 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 0 | 1167 } else { |
| 6605 | 1168 /* Unreachable? Would need a category2_1st on TOS which does |
| 1169 * not appear possible. */ | |
| 1170 verify_error( | |
| 1171 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1172 bad_type_msg, "dup2_x1"); | |
| 0 | 1173 return; |
| 1174 } | |
| 1175 type3 = current_frame.pop_stack( | |
| 1176 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1177 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1178 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1179 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1180 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1181 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1182 no_control_flow = false; break; | |
| 1183 } | |
| 1184 case Bytecodes::_dup2_x2 : | |
| 1185 { | |
| 1186 VerificationType type3, type4; | |
| 1187 type = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1188 if (type.is_category1()) { | |
| 1189 type2 = current_frame.pop_stack( | |
| 1190 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1191 } else if (type.is_category2_2nd()) { | |
| 1192 type2 = current_frame.pop_stack( | |
| 1193 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1194 } else { | |
| 6605 | 1195 /* Unreachable? Would need a category2_1st on TOS which does |
| 1196 * not appear possible. */ | |
| 1197 verify_error( | |
| 1198 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1199 bad_type_msg, "dup2_x2"); | |
| 0 | 1200 return; |
| 1201 } | |
| 1202 type3 = current_frame.pop_stack(CHECK_VERIFY(this)); | |
| 1203 if (type3.is_category1()) { | |
| 1204 type4 = current_frame.pop_stack( | |
| 1205 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1206 } else if (type3.is_category2_2nd()) { | |
| 1207 type4 = current_frame.pop_stack( | |
| 1208 VerificationType::category2_check(), CHECK_VERIFY(this)); | |
| 1209 } else { | |
| 6605 | 1210 /* Unreachable? Would need a category2_1st on TOS after popping |
| 1211 * a long/double or two category 1's, which does not | |
| 1212 * appear possible. */ | |
| 1213 verify_error( | |
| 1214 ErrorContext::bad_type(bci, current_frame.stack_top_ctx()), | |
| 1215 bad_type_msg, "dup2_x2"); | |
| 0 | 1216 return; |
| 1217 } | |
| 1218 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1219 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1220 current_frame.push_stack(type4, CHECK_VERIFY(this)); | |
| 1221 current_frame.push_stack(type3, CHECK_VERIFY(this)); | |
| 1222 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1223 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1224 no_control_flow = false; break; | |
| 1225 } | |
| 1226 case Bytecodes::_swap : | |
| 1227 type = current_frame.pop_stack( | |
| 1228 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1229 type2 = current_frame.pop_stack( | |
| 1230 VerificationType::category1_check(), CHECK_VERIFY(this)); | |
| 1231 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1232 current_frame.push_stack(type2, CHECK_VERIFY(this)); | |
| 1233 no_control_flow = false; break; | |
| 1234 case Bytecodes::_iadd : | |
| 1235 case Bytecodes::_isub : | |
| 1236 case Bytecodes::_imul : | |
| 1237 case Bytecodes::_idiv : | |
| 1238 case Bytecodes::_irem : | |
| 1239 case Bytecodes::_ishl : | |
| 1240 case Bytecodes::_ishr : | |
| 1241 case Bytecodes::_iushr : | |
| 1242 case Bytecodes::_ior : | |
| 1243 case Bytecodes::_ixor : | |
| 1244 case Bytecodes::_iand : | |
| 1245 current_frame.pop_stack( | |
| 1246 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1247 // fall through | |
| 1248 case Bytecodes::_ineg : | |
| 1249 current_frame.pop_stack( | |
| 1250 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1251 current_frame.push_stack( | |
| 1252 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1253 no_control_flow = false; break; | |
| 1254 case Bytecodes::_ladd : | |
| 1255 case Bytecodes::_lsub : | |
| 1256 case Bytecodes::_lmul : | |
| 1257 case Bytecodes::_ldiv : | |
| 1258 case Bytecodes::_lrem : | |
| 1259 case Bytecodes::_land : | |
| 1260 case Bytecodes::_lor : | |
| 1261 case Bytecodes::_lxor : | |
| 1262 current_frame.pop_stack_2( | |
| 1263 VerificationType::long2_type(), | |
| 1264 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1265 // fall through | |
| 1266 case Bytecodes::_lneg : | |
| 1267 current_frame.pop_stack_2( | |
| 1268 VerificationType::long2_type(), | |
| 1269 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1270 current_frame.push_stack_2( | |
| 1271 VerificationType::long_type(), | |
| 1272 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1273 no_control_flow = false; break; | |
| 1274 case Bytecodes::_lshl : | |
| 1275 case Bytecodes::_lshr : | |
| 1276 case Bytecodes::_lushr : | |
| 1277 current_frame.pop_stack( | |
| 1278 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1279 current_frame.pop_stack_2( | |
| 1280 VerificationType::long2_type(), | |
| 1281 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1282 current_frame.push_stack_2( | |
| 1283 VerificationType::long_type(), | |
| 1284 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1285 no_control_flow = false; break; | |
| 1286 case Bytecodes::_fadd : | |
| 1287 case Bytecodes::_fsub : | |
| 1288 case Bytecodes::_fmul : | |
| 1289 case Bytecodes::_fdiv : | |
| 1290 case Bytecodes::_frem : | |
| 1291 current_frame.pop_stack( | |
| 1292 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1293 // fall through | |
| 1294 case Bytecodes::_fneg : | |
| 1295 current_frame.pop_stack( | |
| 1296 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1297 current_frame.push_stack( | |
| 1298 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1299 no_control_flow = false; break; | |
| 1300 case Bytecodes::_dadd : | |
| 1301 case Bytecodes::_dsub : | |
| 1302 case Bytecodes::_dmul : | |
| 1303 case Bytecodes::_ddiv : | |
| 1304 case Bytecodes::_drem : | |
| 1305 current_frame.pop_stack_2( | |
| 1306 VerificationType::double2_type(), | |
| 1307 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1308 // fall through | |
| 1309 case Bytecodes::_dneg : | |
| 1310 current_frame.pop_stack_2( | |
| 1311 VerificationType::double2_type(), | |
| 1312 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1313 current_frame.push_stack_2( | |
| 1314 VerificationType::double_type(), | |
| 1315 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1316 no_control_flow = false; break; | |
| 1317 case Bytecodes::_iinc : | |
| 1318 verify_iinc(bcs.get_index(), ¤t_frame, CHECK_VERIFY(this)); | |
| 1319 no_control_flow = false; break; | |
| 1320 case Bytecodes::_i2l : | |
| 1321 type = current_frame.pop_stack( | |
| 1322 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1323 current_frame.push_stack_2( | |
| 1324 VerificationType::long_type(), | |
| 1325 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1326 no_control_flow = false; break; | |
| 1327 case Bytecodes::_l2i : | |
| 1328 current_frame.pop_stack_2( | |
| 1329 VerificationType::long2_type(), | |
| 1330 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1331 current_frame.push_stack( | |
| 1332 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1333 no_control_flow = false; break; | |
| 1334 case Bytecodes::_i2f : | |
| 1335 current_frame.pop_stack( | |
| 1336 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1337 current_frame.push_stack( | |
| 1338 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1339 no_control_flow = false; break; | |
| 1340 case Bytecodes::_i2d : | |
| 1341 current_frame.pop_stack( | |
| 1342 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1343 current_frame.push_stack_2( | |
| 1344 VerificationType::double_type(), | |
| 1345 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1346 no_control_flow = false; break; | |
| 1347 case Bytecodes::_l2f : | |
| 1348 current_frame.pop_stack_2( | |
| 1349 VerificationType::long2_type(), | |
| 1350 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1351 current_frame.push_stack( | |
| 1352 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1353 no_control_flow = false; break; | |
| 1354 case Bytecodes::_l2d : | |
| 1355 current_frame.pop_stack_2( | |
| 1356 VerificationType::long2_type(), | |
| 1357 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1358 current_frame.push_stack_2( | |
| 1359 VerificationType::double_type(), | |
| 1360 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1361 no_control_flow = false; break; | |
| 1362 case Bytecodes::_f2i : | |
| 1363 current_frame.pop_stack( | |
| 1364 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1365 current_frame.push_stack( | |
| 1366 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1367 no_control_flow = false; break; | |
| 1368 case Bytecodes::_f2l : | |
| 1369 current_frame.pop_stack( | |
| 1370 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1371 current_frame.push_stack_2( | |
| 1372 VerificationType::long_type(), | |
| 1373 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1374 no_control_flow = false; break; | |
| 1375 case Bytecodes::_f2d : | |
| 1376 current_frame.pop_stack( | |
| 1377 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1378 current_frame.push_stack_2( | |
| 1379 VerificationType::double_type(), | |
| 1380 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1381 no_control_flow = false; break; | |
| 1382 case Bytecodes::_d2i : | |
| 1383 current_frame.pop_stack_2( | |
| 1384 VerificationType::double2_type(), | |
| 1385 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1386 current_frame.push_stack( | |
| 1387 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1388 no_control_flow = false; break; | |
| 1389 case Bytecodes::_d2l : | |
| 1390 current_frame.pop_stack_2( | |
| 1391 VerificationType::double2_type(), | |
| 1392 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1393 current_frame.push_stack_2( | |
| 1394 VerificationType::long_type(), | |
| 1395 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1396 no_control_flow = false; break; | |
| 1397 case Bytecodes::_d2f : | |
| 1398 current_frame.pop_stack_2( | |
| 1399 VerificationType::double2_type(), | |
| 1400 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1401 current_frame.push_stack( | |
| 1402 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1403 no_control_flow = false; break; | |
| 1404 case Bytecodes::_i2b : | |
| 1405 case Bytecodes::_i2c : | |
| 1406 case Bytecodes::_i2s : | |
| 1407 current_frame.pop_stack( | |
| 1408 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1409 current_frame.push_stack( | |
| 1410 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1411 no_control_flow = false; break; | |
| 1412 case Bytecodes::_lcmp : | |
| 1413 current_frame.pop_stack_2( | |
| 1414 VerificationType::long2_type(), | |
| 1415 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1416 current_frame.pop_stack_2( | |
| 1417 VerificationType::long2_type(), | |
| 1418 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 1419 current_frame.push_stack( | |
| 1420 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1421 no_control_flow = false; break; | |
| 1422 case Bytecodes::_fcmpl : | |
| 1423 case Bytecodes::_fcmpg : | |
| 1424 current_frame.pop_stack( | |
| 1425 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1426 current_frame.pop_stack( | |
| 1427 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1428 current_frame.push_stack( | |
| 1429 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1430 no_control_flow = false; break; | |
| 1431 case Bytecodes::_dcmpl : | |
| 1432 case Bytecodes::_dcmpg : | |
| 1433 current_frame.pop_stack_2( | |
| 1434 VerificationType::double2_type(), | |
| 1435 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1436 current_frame.pop_stack_2( | |
| 1437 VerificationType::double2_type(), | |
| 1438 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 1439 current_frame.push_stack( | |
| 1440 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1441 no_control_flow = false; break; | |
| 1442 case Bytecodes::_if_icmpeq: | |
| 1443 case Bytecodes::_if_icmpne: | |
| 1444 case Bytecodes::_if_icmplt: | |
| 1445 case Bytecodes::_if_icmpge: | |
| 1446 case Bytecodes::_if_icmpgt: | |
| 1447 case Bytecodes::_if_icmple: | |
| 1448 current_frame.pop_stack( | |
| 1449 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1450 // fall through | |
| 1451 case Bytecodes::_ifeq: | |
| 1452 case Bytecodes::_ifne: | |
| 1453 case Bytecodes::_iflt: | |
| 1454 case Bytecodes::_ifge: | |
| 1455 case Bytecodes::_ifgt: | |
| 1456 case Bytecodes::_ifle: | |
| 1457 current_frame.pop_stack( | |
| 1458 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1459 target = bcs.dest(); | |
| 1460 stackmap_table.check_jump_target( | |
| 1461 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1462 no_control_flow = false; break; | |
| 1463 case Bytecodes::_if_acmpeq : | |
| 1464 case Bytecodes::_if_acmpne : | |
| 1465 current_frame.pop_stack( | |
| 1466 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1467 // fall through | |
| 1468 case Bytecodes::_ifnull : | |
| 1469 case Bytecodes::_ifnonnull : | |
| 1470 current_frame.pop_stack( | |
| 1471 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1472 target = bcs.dest(); | |
| 1473 stackmap_table.check_jump_target | |
| 1474 (¤t_frame, target, CHECK_VERIFY(this)); | |
| 1475 no_control_flow = false; break; | |
| 1476 case Bytecodes::_goto : | |
| 1477 target = bcs.dest(); | |
| 1478 stackmap_table.check_jump_target( | |
| 1479 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1480 no_control_flow = true; break; | |
| 1481 case Bytecodes::_goto_w : | |
| 1482 target = bcs.dest_w(); | |
| 1483 stackmap_table.check_jump_target( | |
| 1484 ¤t_frame, target, CHECK_VERIFY(this)); | |
| 1485 no_control_flow = true; break; | |
| 1486 case Bytecodes::_tableswitch : | |
| 1487 case Bytecodes::_lookupswitch : | |
| 1488 verify_switch( | |
| 1489 &bcs, code_length, code_data, ¤t_frame, | |
| 1490 &stackmap_table, CHECK_VERIFY(this)); | |
| 1491 no_control_flow = true; break; | |
| 1492 case Bytecodes::_ireturn : | |
| 1493 type = current_frame.pop_stack( | |
| 1494 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 6605 | 1495 verify_return_value(return_type, type, bci, |
| 1496 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1497 no_control_flow = true; break; |
| 1498 case Bytecodes::_lreturn : | |
| 1499 type2 = current_frame.pop_stack( | |
| 1500 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1501 type = current_frame.pop_stack( | |
| 1502 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 6605 | 1503 verify_return_value(return_type, type, bci, |
| 1504 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1505 no_control_flow = true; break; |
| 1506 case Bytecodes::_freturn : | |
| 1507 type = current_frame.pop_stack( | |
| 1508 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 6605 | 1509 verify_return_value(return_type, type, bci, |
| 1510 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1511 no_control_flow = true; break; |
| 1512 case Bytecodes::_dreturn : | |
| 1513 type2 = current_frame.pop_stack( | |
| 1514 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 1515 type = current_frame.pop_stack( | |
| 1516 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 6605 | 1517 verify_return_value(return_type, type, bci, |
| 1518 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1519 no_control_flow = true; break; |
| 1520 case Bytecodes::_areturn : | |
| 1521 type = current_frame.pop_stack( | |
| 1522 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 6605 | 1523 verify_return_value(return_type, type, bci, |
| 1524 ¤t_frame, CHECK_VERIFY(this)); | |
| 0 | 1525 no_control_flow = true; break; |
| 1526 case Bytecodes::_return : | |
| 1527 if (return_type != VerificationType::bogus_type()) { | |
| 6605 | 1528 verify_error(ErrorContext::bad_code(bci), |
| 1529 "Method expects a return value"); | |
| 0 | 1530 return; |
| 1531 } | |
| 1532 // Make sure "this" has been initialized if current method is an | |
| 1533 // <init> | |
| 1534 if (_method->name() == vmSymbols::object_initializer_name() && | |
| 1535 current_frame.flag_this_uninit()) { | |
| 6605 | 1536 verify_error(ErrorContext::bad_code(bci), |
| 1537 "Constructor must call super() or this() " | |
| 1538 "before return"); | |
| 0 | 1539 return; |
| 1540 } | |
| 1541 no_control_flow = true; break; | |
| 1542 case Bytecodes::_getstatic : | |
| 1543 case Bytecodes::_putstatic : | |
| 1544 case Bytecodes::_getfield : | |
| 1545 case Bytecodes::_putfield : | |
| 1546 verify_field_instructions( | |
| 1547 &bcs, ¤t_frame, cp, CHECK_VERIFY(this)); | |
| 1548 no_control_flow = false; break; | |
| 1549 case Bytecodes::_invokevirtual : | |
| 1550 case Bytecodes::_invokespecial : | |
| 1551 case Bytecodes::_invokestatic : | |
| 1552 verify_invoke_instructions( | |
| 1553 &bcs, code_length, ¤t_frame, | |
| 1554 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1555 no_control_flow = false; break; | |
| 1556 case Bytecodes::_invokeinterface : | |
|
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6655646: dynamic languages need dynamically linked call sites
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diff
changeset
|
1557 case Bytecodes::_invokedynamic : |
| 0 | 1558 verify_invoke_instructions( |
| 1559 &bcs, code_length, ¤t_frame, | |
| 1560 &this_uninit, return_type, cp, CHECK_VERIFY(this)); | |
| 1561 no_control_flow = false; break; | |
| 1562 case Bytecodes::_new : | |
| 1563 { | |
| 1565 | 1564 index = bcs.get_index_u2(); |
| 6605 | 1565 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1566 VerificationType new_class_type = |
| 1567 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1568 if (!new_class_type.is_object()) { | |
| 6605 | 1569 verify_error(ErrorContext::bad_type(bci, |
| 1570 TypeOrigin::cp(index, new_class_type)), | |
| 1571 "Illegal new instruction"); | |
| 0 | 1572 return; |
| 1573 } | |
| 1574 type = VerificationType::uninitialized_type(bci); | |
| 1575 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1576 no_control_flow = false; break; | |
| 1577 } | |
| 1578 case Bytecodes::_newarray : | |
| 1579 type = get_newarray_type(bcs.get_index(), bci, CHECK_VERIFY(this)); | |
| 1580 current_frame.pop_stack( | |
| 1581 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1582 current_frame.push_stack(type, CHECK_VERIFY(this)); | |
| 1583 no_control_flow = false; break; | |
| 1584 case Bytecodes::_anewarray : | |
| 1585 verify_anewarray( | |
| 6605 | 1586 bci, bcs.get_index_u2(), cp, ¤t_frame, CHECK_VERIFY(this)); |
| 0 | 1587 no_control_flow = false; break; |
| 1588 case Bytecodes::_arraylength : | |
| 1589 type = current_frame.pop_stack( | |
| 1590 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
|
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diff
changeset
|
1591 if (!(type.is_null() || type.is_array())) { |
| 6605 | 1592 verify_error(ErrorContext::bad_type( |
| 1593 bci, current_frame.stack_top_ctx()), | |
| 1594 bad_type_msg, "arraylength"); | |
| 0 | 1595 } |
| 1596 current_frame.push_stack( | |
| 1597 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1598 no_control_flow = false; break; | |
| 1599 case Bytecodes::_checkcast : | |
| 1600 { | |
| 1565 | 1601 index = bcs.get_index_u2(); |
| 6605 | 1602 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
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6865028: Illegal instructions passing verification prior to 'invokespecial Object.<init>'
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1678
diff
changeset
|
1603 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1604 VerificationType klass_type = cp_index_to_type( |
| 1605 index, cp, CHECK_VERIFY(this)); | |
| 1606 current_frame.push_stack(klass_type, CHECK_VERIFY(this)); | |
| 1607 no_control_flow = false; break; | |
| 1608 } | |
| 1609 case Bytecodes::_instanceof : { | |
| 1565 | 1610 index = bcs.get_index_u2(); |
| 6605 | 1611 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
|
1955
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|
1612 current_frame.pop_stack(object_type(), CHECK_VERIFY(this)); |
| 0 | 1613 current_frame.push_stack( |
| 1614 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1615 no_control_flow = false; break; | |
| 1616 } | |
| 1617 case Bytecodes::_monitorenter : | |
| 1618 case Bytecodes::_monitorexit : | |
| 1619 current_frame.pop_stack( | |
| 1620 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 1621 no_control_flow = false; break; | |
| 1622 case Bytecodes::_multianewarray : | |
| 1623 { | |
| 1565 | 1624 index = bcs.get_index_u2(); |
| 0 | 1625 u2 dim = *(bcs.bcp()+3); |
| 6605 | 1626 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); |
| 0 | 1627 VerificationType new_array_type = |
| 1628 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 1629 if (!new_array_type.is_array()) { | |
| 6605 | 1630 verify_error(ErrorContext::bad_type(bci, |
| 1631 TypeOrigin::cp(index, new_array_type)), | |
| 1632 "Illegal constant pool index in multianewarray instruction"); | |
| 0 | 1633 return; |
| 1634 } | |
| 1635 if (dim < 1 || new_array_type.dimensions() < dim) { | |
| 6605 | 1636 verify_error(ErrorContext::bad_code(bci), |
| 1637 "Illegal dimension in multianewarray instruction: %d", dim); | |
| 0 | 1638 return; |
| 1639 } | |
| 1640 for (int i = 0; i < dim; i++) { | |
| 1641 current_frame.pop_stack( | |
| 1642 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1643 } | |
| 1644 current_frame.push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 1645 no_control_flow = false; break; | |
| 1646 } | |
| 1647 case Bytecodes::_athrow : | |
| 1648 type = VerificationType::reference_type( | |
| 1649 vmSymbols::java_lang_Throwable()); | |
| 1650 current_frame.pop_stack(type, CHECK_VERIFY(this)); | |
| 1651 no_control_flow = true; break; | |
| 1652 default: | |
| 1653 // We only need to check the valid bytecodes in class file. | |
| 1654 // And jsr and ret are not in the new class file format in JDK1.5. | |
| 6605 | 1655 verify_error(ErrorContext::bad_code(bci), |
| 1656 "Bad instruction: %02x", opcode); | |
| 0 | 1657 no_control_flow = false; |
| 1658 return; | |
| 1659 } // end switch | |
| 1660 } // end Merge with the next instruction | |
| 1661 | |
| 1662 // Look for possible jump target in exception handlers and see if it | |
| 1663 // matches current_frame | |
| 1664 if (bci >= ex_min && bci < ex_max) { | |
| 1665 verify_exception_handler_targets( | |
| 1666 bci, this_uninit, ¤t_frame, &stackmap_table, CHECK_VERIFY(this)); | |
| 1667 } | |
| 1668 } // end while | |
| 1669 | |
| 1670 // Make sure that control flow does not fall through end of the method | |
| 1671 if (!no_control_flow) { | |
| 6605 | 1672 verify_error(ErrorContext::bad_code(code_length), |
| 1673 "Control flow falls through code end"); | |
| 0 | 1674 return; |
| 1675 } | |
| 1676 } | |
| 1677 | |
| 1678 char* ClassVerifier::generate_code_data(methodHandle m, u4 code_length, TRAPS) { | |
| 1679 char* code_data = NEW_RESOURCE_ARRAY(char, code_length); | |
| 1680 memset(code_data, 0, sizeof(char) * code_length); | |
| 1681 RawBytecodeStream bcs(m); | |
| 1682 | |
| 1683 while (!bcs.is_last_bytecode()) { | |
| 1684 if (bcs.raw_next() != Bytecodes::_illegal) { | |
| 1685 int bci = bcs.bci(); | |
| 1565 | 1686 if (bcs.raw_code() == Bytecodes::_new) { |
| 0 | 1687 code_data[bci] = NEW_OFFSET; |
| 1688 } else { | |
| 1689 code_data[bci] = BYTECODE_OFFSET; | |
| 1690 } | |
| 1691 } else { | |
| 6605 | 1692 verify_error(ErrorContext::bad_code(bcs.bci()), "Bad instruction"); |
| 0 | 1693 return NULL; |
| 1694 } | |
| 1695 } | |
| 1696 | |
| 1697 return code_data; | |
| 1698 } | |
| 1699 | |
| 1700 void ClassVerifier::verify_exception_handler_table(u4 code_length, char* code_data, int& min, int& max, TRAPS) { | |
|
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diff
changeset
|
1701 ExceptionTable exhandlers(_method()); |
|
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diff
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|
1702 int exlength = exhandlers.length(); |
| 0 | 1703 constantPoolHandle cp (THREAD, _method->constants()); |
| 1704 | |
|
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|
1705 for(int i = 0; i < exlength; i++) { |
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1706 //reacquire the table in case a GC happened |
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1707 ExceptionTable exhandlers(_method()); |
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1708 u2 start_pc = exhandlers.start_pc(i); |
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1709 u2 end_pc = exhandlers.end_pc(i); |
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1710 u2 handler_pc = exhandlers.handler_pc(i); |
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1711 if (start_pc >= code_length || code_data[start_pc] == 0) { |
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1712 class_format_error("Illegal exception table start_pc %d", start_pc); |
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1713 return; |
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1714 } |
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1715 if (end_pc != code_length) { // special case: end_pc == code_length |
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1716 if (end_pc > code_length || code_data[end_pc] == 0) { |
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1717 class_format_error("Illegal exception table end_pc %d", end_pc); |
| 0 | 1718 return; |
| 1719 } | |
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1720 } |
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1721 if (handler_pc >= code_length || code_data[handler_pc] == 0) { |
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1722 class_format_error("Illegal exception table handler_pc %d", handler_pc); |
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1723 return; |
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1724 } |
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1725 int catch_type_index = exhandlers.catch_type_index(i); |
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1726 if (catch_type_index != 0) { |
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1727 VerificationType catch_type = cp_index_to_type( |
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1728 catch_type_index, cp, CHECK_VERIFY(this)); |
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1729 VerificationType throwable = |
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1730 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1731 bool is_subclass = throwable.is_assignable_from( |
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1732 catch_type, this, CHECK_VERIFY(this)); |
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1733 if (!is_subclass) { |
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1734 // 4286534: should throw VerifyError according to recent spec change |
| 6605 | 1735 verify_error(ErrorContext::bad_type(handler_pc, |
| 1736 TypeOrigin::cp(catch_type_index, catch_type), | |
| 1737 TypeOrigin::implicit(throwable)), | |
| 1738 "Catch type is not a subclass " | |
| 1739 "of Throwable in exception handler %d", handler_pc); | |
| 0 | 1740 return; |
| 1741 } | |
| 1742 } | |
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1743 if (start_pc < min) min = start_pc; |
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1744 if (end_pc > max) max = end_pc; |
| 0 | 1745 } |
| 1746 } | |
| 1747 | |
| 1748 void ClassVerifier::verify_local_variable_table(u4 code_length, char* code_data, TRAPS) { | |
| 1749 int localvariable_table_length = _method()->localvariable_table_length(); | |
| 1750 if (localvariable_table_length > 0) { | |
| 1751 LocalVariableTableElement* table = _method()->localvariable_table_start(); | |
| 1752 for (int i = 0; i < localvariable_table_length; i++) { | |
| 1753 u2 start_bci = table[i].start_bci; | |
| 1754 u2 length = table[i].length; | |
| 1755 | |
| 1756 if (start_bci >= code_length || code_data[start_bci] == 0) { | |
| 1757 class_format_error( | |
| 1758 "Illegal local variable table start_pc %d", start_bci); | |
| 1759 return; | |
| 1760 } | |
| 1761 u4 end_bci = (u4)(start_bci + length); | |
| 1762 if (end_bci != code_length) { | |
| 1763 if (end_bci >= code_length || code_data[end_bci] == 0) { | |
| 1764 class_format_error( "Illegal local variable table length %d", length); | |
| 1765 return; | |
| 1766 } | |
| 1767 } | |
| 1768 } | |
| 1769 } | |
| 1770 } | |
| 1771 | |
| 1772 u2 ClassVerifier::verify_stackmap_table(u2 stackmap_index, u2 bci, | |
| 1773 StackMapFrame* current_frame, | |
| 1774 StackMapTable* stackmap_table, | |
| 1775 bool no_control_flow, TRAPS) { | |
| 1776 if (stackmap_index < stackmap_table->get_frame_count()) { | |
| 1777 u2 this_offset = stackmap_table->get_offset(stackmap_index); | |
| 1778 if (no_control_flow && this_offset > bci) { | |
| 6605 | 1779 verify_error(ErrorContext::missing_stackmap(bci), |
| 1780 "Expecting a stack map frame"); | |
| 0 | 1781 return 0; |
| 1782 } | |
| 1783 if (this_offset == bci) { | |
| 6605 | 1784 ErrorContext ctx; |
| 0 | 1785 // See if current stack map can be assigned to the frame in table. |
| 1786 // current_frame is the stackmap frame got from the last instruction. | |
| 1787 // If matched, current_frame will be updated by this method. | |
| 6605 | 1788 bool matches = stackmap_table->match_stackmap( |
| 0 | 1789 current_frame, this_offset, stackmap_index, |
| 6605 | 1790 !no_control_flow, true, &ctx, CHECK_VERIFY_(this, 0)); |
| 1791 if (!matches) { | |
| 0 | 1792 // report type error |
| 6605 | 1793 verify_error(ctx, "Instruction type does not match stack map"); |
| 0 | 1794 return 0; |
| 1795 } | |
| 1796 stackmap_index++; | |
| 1797 } else if (this_offset < bci) { | |
| 1798 // current_offset should have met this_offset. | |
| 1799 class_format_error("Bad stack map offset %d", this_offset); | |
| 1800 return 0; | |
| 1801 } | |
| 1802 } else if (no_control_flow) { | |
| 6605 | 1803 verify_error(ErrorContext::bad_code(bci), "Expecting a stack map frame"); |
| 0 | 1804 return 0; |
| 1805 } | |
| 1806 return stackmap_index; | |
| 1807 } | |
| 1808 | |
| 1809 void ClassVerifier::verify_exception_handler_targets(u2 bci, bool this_uninit, StackMapFrame* current_frame, | |
| 1810 StackMapTable* stackmap_table, TRAPS) { | |
| 1811 constantPoolHandle cp (THREAD, _method->constants()); | |
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1812 ExceptionTable exhandlers(_method()); |
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1813 int exlength = exhandlers.length(); |
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1814 for(int i = 0; i < exlength; i++) { |
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1815 //reacquire the table in case a GC happened |
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1816 ExceptionTable exhandlers(_method()); |
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1817 u2 start_pc = exhandlers.start_pc(i); |
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1818 u2 end_pc = exhandlers.end_pc(i); |
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1819 u2 handler_pc = exhandlers.handler_pc(i); |
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1820 int catch_type_index = exhandlers.catch_type_index(i); |
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1821 if(bci >= start_pc && bci < end_pc) { |
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1822 u1 flags = current_frame->flags(); |
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1823 if (this_uninit) { flags |= FLAG_THIS_UNINIT; } |
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1824 StackMapFrame* new_frame = current_frame->frame_in_exception_handler(flags); |
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1825 if (catch_type_index != 0) { |
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1826 // We know that this index refers to a subclass of Throwable |
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1827 VerificationType catch_type = cp_index_to_type( |
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1828 catch_type_index, cp, CHECK_VERIFY(this)); |
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1829 new_frame->push_stack(catch_type, CHECK_VERIFY(this)); |
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1830 } else { |
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1831 VerificationType throwable = |
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1832 VerificationType::reference_type(vmSymbols::java_lang_Throwable()); |
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1833 new_frame->push_stack(throwable, CHECK_VERIFY(this)); |
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1834 } |
| 6605 | 1835 ErrorContext ctx; |
| 1836 bool matches = stackmap_table->match_stackmap( | |
| 1837 new_frame, handler_pc, true, false, &ctx, CHECK_VERIFY(this)); | |
| 1838 if (!matches) { | |
| 1839 verify_error(ctx, "Stack map does not match the one at " | |
| 1840 "exception handler %d", handler_pc); | |
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1841 return; |
| 0 | 1842 } |
| 1843 } | |
| 1844 } | |
| 1845 } | |
| 1846 | |
| 6605 | 1847 void ClassVerifier::verify_cp_index( |
| 1848 u2 bci, constantPoolHandle cp, int index, TRAPS) { | |
| 0 | 1849 int nconstants = cp->length(); |
| 1850 if ((index <= 0) || (index >= nconstants)) { | |
| 6605 | 1851 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1852 "Illegal constant pool index %d in class %s", | |
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1853 index, InstanceKlass::cast(cp->pool_holder())->external_name()); |
| 0 | 1854 return; |
| 1855 } | |
| 1856 } | |
| 1857 | |
| 1858 void ClassVerifier::verify_cp_type( | |
| 6605 | 1859 u2 bci, int index, constantPoolHandle cp, unsigned int types, TRAPS) { |
| 0 | 1860 |
| 1861 // In some situations, bytecode rewriting may occur while we're verifying. | |
| 1862 // In this case, a constant pool cache exists and some indices refer to that | |
| 1570 | 1863 // instead. Be sure we don't pick up such indices by accident. |
| 1864 // We must check was_recursively_verified() before we get here. | |
| 1865 guarantee(cp->cache() == NULL, "not rewritten yet"); | |
| 0 | 1866 |
| 6605 | 1867 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); |
| 0 | 1868 unsigned int tag = cp->tag_at(index).value(); |
| 1869 if ((types & (1 << tag)) == 0) { | |
| 6605 | 1870 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 0 | 1871 "Illegal type at constant pool entry %d in class %s", |
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1872 index, InstanceKlass::cast(cp->pool_holder())->external_name()); |
| 0 | 1873 return; |
| 1874 } | |
| 1875 } | |
| 1876 | |
| 1877 void ClassVerifier::verify_cp_class_type( | |
| 6605 | 1878 u2 bci, int index, constantPoolHandle cp, TRAPS) { |
| 1879 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1880 constantTag tag = cp->tag_at(index); |
| 1881 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 6605 | 1882 verify_error(ErrorContext::bad_cp_index(bci, index), |
| 1883 "Illegal type at constant pool entry %d in class %s", | |
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1884 index, InstanceKlass::cast(cp->pool_holder())->external_name()); |
| 0 | 1885 return; |
| 1886 } | |
| 1887 } | |
| 1888 | |
| 6605 | 1889 void ClassVerifier::verify_error(ErrorContext ctx, const char* msg, ...) { |
| 1890 stringStream ss; | |
| 0 | 1891 |
| 6605 | 1892 ctx.reset_frames(); |
| 0 | 1893 _exception_type = vmSymbols::java_lang_VerifyError(); |
| 6605 | 1894 _error_context = ctx; |
| 0 | 1895 va_list va; |
| 6605 | 1896 va_start(va, msg); |
| 1897 ss.vprint(msg, va); | |
| 0 | 1898 va_end(va); |
| 6605 | 1899 _message = ss.as_string(); |
| 1900 #ifdef ASSERT | |
| 1901 ResourceMark rm; | |
| 1902 const char* exception_name = _exception_type->as_C_string(); | |
| 1903 Exceptions::debug_check_abort(exception_name, NULL); | |
| 1904 #endif // ndef ASSERT | |
| 0 | 1905 } |
| 1906 | |
| 1907 void ClassVerifier::class_format_error(const char* msg, ...) { | |
| 6605 | 1908 stringStream ss; |
| 0 | 1909 _exception_type = vmSymbols::java_lang_ClassFormatError(); |
| 1910 va_list va; | |
| 1911 va_start(va, msg); | |
| 6605 | 1912 ss.vprint(msg, va); |
| 0 | 1913 va_end(va); |
| 6605 | 1914 if (!_method.is_null()) { |
| 1915 ss.print(" in method %s", _method->name_and_sig_as_C_string()); | |
| 1916 } | |
| 1917 _message = ss.as_string(); | |
| 0 | 1918 } |
| 1919 | |
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1920 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) { |
| 0 | 1921 // Get current loader and protection domain first. |
| 1922 oop loader = current_class()->class_loader(); | |
| 1923 oop protection_domain = current_class()->protection_domain(); | |
| 1924 | |
| 1925 return SystemDictionary::resolve_or_fail( | |
| 1926 name, Handle(THREAD, loader), Handle(THREAD, protection_domain), | |
| 1927 true, CHECK_NULL); | |
| 1928 } | |
| 1929 | |
| 1930 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class, | |
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1931 Klass* target_class, |
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1932 Symbol* field_name, |
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1933 Symbol* field_sig, |
| 0 | 1934 bool is_method) { |
| 1935 No_Safepoint_Verifier nosafepoint; | |
| 1936 | |
| 1937 // If target class isn't a super class of this class, we don't worry about this case | |
| 1938 if (!this_class->is_subclass_of(target_class)) { | |
| 1939 return false; | |
| 1940 } | |
| 1941 // Check if the specified method or field is protected | |
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1942 InstanceKlass* target_instance = InstanceKlass::cast(target_class); |
| 0 | 1943 fieldDescriptor fd; |
| 1944 if (is_method) { | |
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1945 Method* m = target_instance->uncached_lookup_method(field_name, field_sig); |
| 0 | 1946 if (m != NULL && m->is_protected()) { |
| 1947 if (!this_class->is_same_class_package(m->method_holder())) { | |
| 1948 return true; | |
| 1949 } | |
| 1950 } | |
| 1951 } else { | |
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1952 Klass* member_klass = target_instance->find_field(field_name, field_sig, &fd); |
| 6605 | 1953 if (member_klass != NULL && fd.is_protected()) { |
| 0 | 1954 if (!this_class->is_same_class_package(member_klass)) { |
| 1955 return true; | |
| 1956 } | |
| 1957 } | |
| 1958 } | |
| 1959 return false; | |
| 1960 } | |
| 1961 | |
| 1962 void ClassVerifier::verify_ldc( | |
| 6605 | 1963 int opcode, u2 index, StackMapFrame* current_frame, |
| 1964 constantPoolHandle cp, u2 bci, TRAPS) { | |
| 1965 verify_cp_index(bci, cp, index, CHECK_VERIFY(this)); | |
| 0 | 1966 constantTag tag = cp->tag_at(index); |
| 1967 unsigned int types; | |
| 1968 if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) { | |
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1969 if (!tag.is_unresolved_klass()) { |
| 0 | 1970 types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float) |
| 1602 | 1971 | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class) |
| 1972 | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType); | |
| 1973 // Note: The class file parser already verified the legality of | |
| 1974 // MethodHandle and MethodType constants. | |
| 6605 | 1975 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1976 } |
| 1977 } else { | |
| 1978 assert(opcode == Bytecodes::_ldc2_w, "must be ldc2_w"); | |
| 1979 types = (1 << JVM_CONSTANT_Double) | (1 << JVM_CONSTANT_Long); | |
| 6605 | 1980 verify_cp_type(bci, index, cp, types, CHECK_VERIFY(this)); |
| 0 | 1981 } |
|
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1982 if (tag.is_string() && cp->is_pseudo_string_at(index)) { |
|
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1983 current_frame->push_stack(object_type(), CHECK_VERIFY(this)); |
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1984 } else if (tag.is_string()) { |
| 0 | 1985 current_frame->push_stack( |
| 1986 VerificationType::reference_type( | |
| 1987 vmSymbols::java_lang_String()), CHECK_VERIFY(this)); | |
| 1988 } else if (tag.is_klass() || tag.is_unresolved_klass()) { | |
| 1989 current_frame->push_stack( | |
| 1990 VerificationType::reference_type( | |
| 1991 vmSymbols::java_lang_Class()), CHECK_VERIFY(this)); | |
| 1992 } else if (tag.is_int()) { | |
| 1993 current_frame->push_stack( | |
| 1994 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1995 } else if (tag.is_float()) { | |
| 1996 current_frame->push_stack( | |
| 1997 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 1998 } else if (tag.is_double()) { | |
| 1999 current_frame->push_stack_2( | |
| 2000 VerificationType::double_type(), | |
| 2001 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2002 } else if (tag.is_long()) { | |
| 2003 current_frame->push_stack_2( | |
| 2004 VerificationType::long_type(), | |
| 2005 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 1602 | 2006 } else if (tag.is_method_handle()) { |
| 2007 current_frame->push_stack( | |
| 2008 VerificationType::reference_type( | |
| 2460 | 2009 vmSymbols::java_lang_invoke_MethodHandle()), CHECK_VERIFY(this)); |
| 1602 | 2010 } else if (tag.is_method_type()) { |
| 2011 current_frame->push_stack( | |
| 2012 VerificationType::reference_type( | |
| 2460 | 2013 vmSymbols::java_lang_invoke_MethodType()), CHECK_VERIFY(this)); |
| 0 | 2014 } else { |
| 6605 | 2015 /* Unreachable? verify_cp_type has already validated the cp type. */ |
| 2016 verify_error( | |
| 2017 ErrorContext::bad_cp_index(bci, index), "Invalid index in ldc"); | |
| 0 | 2018 return; |
| 2019 } | |
| 2020 } | |
| 2021 | |
| 2022 void ClassVerifier::verify_switch( | |
| 2023 RawBytecodeStream* bcs, u4 code_length, char* code_data, | |
| 2024 StackMapFrame* current_frame, StackMapTable* stackmap_table, TRAPS) { | |
| 2025 int bci = bcs->bci(); | |
| 2026 address bcp = bcs->bcp(); | |
| 2027 address aligned_bcp = (address) round_to((intptr_t)(bcp + 1), jintSize); | |
| 2028 | |
| 2029 // 4639449 & 4647081: padding bytes must be 0 | |
| 2030 u2 padding_offset = 1; | |
| 2031 while ((bcp + padding_offset) < aligned_bcp) { | |
| 2032 if(*(bcp + padding_offset) != 0) { | |
| 6605 | 2033 verify_error(ErrorContext::bad_code(bci), |
| 2034 "Nonzero padding byte in lookswitch or tableswitch"); | |
| 0 | 2035 return; |
| 2036 } | |
| 2037 padding_offset++; | |
| 2038 } | |
| 2039 int default_offset = (int) Bytes::get_Java_u4(aligned_bcp); | |
| 2040 int keys, delta; | |
| 2041 current_frame->pop_stack( | |
| 2042 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 1565 | 2043 if (bcs->raw_code() == Bytecodes::_tableswitch) { |
| 0 | 2044 jint low = (jint)Bytes::get_Java_u4(aligned_bcp + jintSize); |
| 2045 jint high = (jint)Bytes::get_Java_u4(aligned_bcp + 2*jintSize); | |
| 2046 if (low > high) { | |
| 6605 | 2047 verify_error(ErrorContext::bad_code(bci), |
| 2048 "low must be less than or equal to high in tableswitch"); | |
| 0 | 2049 return; |
| 2050 } | |
| 2051 keys = high - low + 1; | |
| 2052 if (keys < 0) { | |
| 6605 | 2053 verify_error(ErrorContext::bad_code(bci), "too many keys in tableswitch"); |
| 0 | 2054 return; |
| 2055 } | |
| 2056 delta = 1; | |
| 2057 } else { | |
| 2058 keys = (int)Bytes::get_Java_u4(aligned_bcp + jintSize); | |
| 2059 if (keys < 0) { | |
| 6605 | 2060 verify_error(ErrorContext::bad_code(bci), |
| 2061 "number of keys in lookupswitch less than 0"); | |
| 0 | 2062 return; |
| 2063 } | |
| 2064 delta = 2; | |
| 2065 // Make sure that the lookupswitch items are sorted | |
| 2066 for (int i = 0; i < (keys - 1); i++) { | |
| 2067 jint this_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i)*jintSize); | |
| 2068 jint next_key = Bytes::get_Java_u4(aligned_bcp + (2+2*i+2)*jintSize); | |
| 2069 if (this_key >= next_key) { | |
| 6605 | 2070 verify_error(ErrorContext::bad_code(bci), |
| 2071 "Bad lookupswitch instruction"); | |
| 0 | 2072 return; |
| 2073 } | |
| 2074 } | |
| 2075 } | |
| 2076 int target = bci + default_offset; | |
| 2077 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this)); | |
| 2078 for (int i = 0; i < keys; i++) { | |
| 6118 | 2079 // Because check_jump_target() may safepoint, the bytecode could have |
| 2080 // moved, which means 'aligned_bcp' is no good and needs to be recalculated. | |
| 2081 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize); | |
| 0 | 2082 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize); |
| 2083 stackmap_table->check_jump_target( | |
| 2084 current_frame, target, CHECK_VERIFY(this)); | |
| 2085 } | |
| 6118 | 2086 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point |
| 0 | 2087 } |
| 2088 | |
| 2089 bool ClassVerifier::name_in_supers( | |
|
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2090 Symbol* ref_name, instanceKlassHandle current) { |
|
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2091 Klass* super = current->super(); |
| 0 | 2092 while (super != NULL) { |
|
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2093 if (super->name() == ref_name) { |
| 0 | 2094 return true; |
| 2095 } | |
|
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2096 super = super->super(); |
| 0 | 2097 } |
| 2098 return false; | |
| 2099 } | |
| 2100 | |
| 2101 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs, | |
| 2102 StackMapFrame* current_frame, | |
| 2103 constantPoolHandle cp, | |
| 2104 TRAPS) { | |
| 1565 | 2105 u2 index = bcs->get_index_u2(); |
| 6605 | 2106 verify_cp_type(bcs->bci(), index, cp, |
| 2107 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this)); | |
| 0 | 2108 |
| 2109 // Get field name and signature | |
|
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2110 Symbol* field_name = cp->name_ref_at(index); |
|
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diff
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|
2111 Symbol* field_sig = cp->signature_ref_at(index); |
| 0 | 2112 |
| 2113 if (!SignatureVerifier::is_valid_type_signature(field_sig)) { | |
| 2114 class_format_error( | |
| 2115 "Invalid signature for field in class %s referenced " | |
| 2116 "from constant pool index %d", _klass->external_name(), index); | |
| 2117 return; | |
| 2118 } | |
| 2119 | |
| 2120 // Get referenced class type | |
| 2121 VerificationType ref_class_type = cp_ref_index_to_type( | |
| 2122 index, cp, CHECK_VERIFY(this)); | |
| 2123 if (!ref_class_type.is_object()) { | |
| 6605 | 2124 /* Unreachable? Class file parser verifies Fieldref contents */ |
| 2125 verify_error(ErrorContext::bad_type(bcs->bci(), | |
| 2126 TypeOrigin::cp(index, ref_class_type)), | |
| 2127 "Expecting reference to class in class %s at constant pool index %d", | |
| 2128 _klass->external_name(), index); | |
| 0 | 2129 return; |
| 2130 } | |
| 2131 VerificationType target_class_type = ref_class_type; | |
| 2132 | |
| 2133 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2134 "buffer type must match VerificationType size"); | |
| 2135 uintptr_t field_type_buffer[2]; | |
| 2136 VerificationType* field_type = (VerificationType*)field_type_buffer; | |
| 2137 // If we make a VerificationType[2] array directly, the compiler calls | |
| 2138 // to the c-runtime library to do the allocation instead of just | |
| 2139 // stack allocating it. Plus it would run constructors. This shows up | |
| 2140 // in performance profiles. | |
| 2141 | |
| 2142 SignatureStream sig_stream(field_sig, false); | |
| 2143 VerificationType stack_object_type; | |
| 2144 int n = change_sig_to_verificationType( | |
| 2145 &sig_stream, field_type, CHECK_VERIFY(this)); | |
| 2146 u2 bci = bcs->bci(); | |
| 2147 bool is_assignable; | |
| 1565 | 2148 switch (bcs->raw_code()) { |
| 0 | 2149 case Bytecodes::_getstatic: { |
| 2150 for (int i = 0; i < n; i++) { | |
| 2151 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2152 } | |
| 2153 break; | |
| 2154 } | |
| 2155 case Bytecodes::_putstatic: { | |
| 2156 for (int i = n - 1; i >= 0; i--) { | |
| 2157 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2158 } | |
| 2159 break; | |
| 2160 } | |
| 2161 case Bytecodes::_getfield: { | |
| 2162 stack_object_type = current_frame->pop_stack( | |
| 2163 target_class_type, CHECK_VERIFY(this)); | |
| 2164 for (int i = 0; i < n; i++) { | |
| 2165 current_frame->push_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2166 } | |
| 2167 goto check_protected; | |
| 2168 } | |
| 2169 case Bytecodes::_putfield: { | |
| 2170 for (int i = n - 1; i >= 0; i--) { | |
| 2171 current_frame->pop_stack(field_type[i], CHECK_VERIFY(this)); | |
| 2172 } | |
| 2173 stack_object_type = current_frame->pop_stack(CHECK_VERIFY(this)); | |
| 2174 | |
| 2175 // The JVMS 2nd edition allows field initialization before the superclass | |
| 2176 // initializer, if the field is defined within the current class. | |
| 2177 fieldDescriptor fd; | |
| 2178 if (stack_object_type == VerificationType::uninitialized_this_type() && | |
| 2179 target_class_type.equals(current_type()) && | |
|
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2180 _klass->find_local_field(field_name, field_sig, &fd)) { |
| 0 | 2181 stack_object_type = current_type(); |
| 2182 } | |
| 2183 is_assignable = target_class_type.is_assignable_from( | |
|
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diff
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|
2184 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2185 if (!is_assignable) { |
| 6605 | 2186 verify_error(ErrorContext::bad_type(bci, |
| 2187 current_frame->stack_top_ctx(), | |
| 2188 TypeOrigin::cp(index, target_class_type)), | |
| 2189 "Bad type on operand stack in putfield"); | |
| 0 | 2190 return; |
| 2191 } | |
| 2192 } | |
| 2193 check_protected: { | |
| 2194 if (_this_type == stack_object_type) | |
| 2195 break; // stack_object_type must be assignable to _current_class_type | |
|
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2196 Symbol* ref_class_name = |
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|
2197 cp->klass_name_at(cp->klass_ref_index_at(index)); |
|
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diff
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|
2198 if (!name_in_supers(ref_class_name, current_class())) |
| 0 | 2199 // stack_object_type must be assignable to _current_class_type since: |
| 2200 // 1. stack_object_type must be assignable to ref_class. | |
| 2201 // 2. ref_class must be _current_class or a subclass of it. It can't | |
| 2202 // be a superclass of it. See revised JVMS 5.4.4. | |
| 2203 break; | |
| 2204 | |
|
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|
2205 Klass* ref_class_oop = load_class(ref_class_name, CHECK); |
|
2177
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diff
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|
2206 if (is_protected_access(current_class(), ref_class_oop, field_name, |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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1980
diff
changeset
|
2207 field_sig, false)) { |
| 0 | 2208 // It's protected access, check if stack object is assignable to |
| 2209 // current class. | |
| 2210 is_assignable = current_type().is_assignable_from( | |
|
2177
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diff
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|
2211 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2212 if (!is_assignable) { |
| 6605 | 2213 verify_error(ErrorContext::bad_type(bci, |
| 2214 current_frame->stack_top_ctx(), | |
| 2215 TypeOrigin::implicit(current_type())), | |
| 2216 "Bad access to protected data in getfield"); | |
| 0 | 2217 return; |
| 2218 } | |
| 2219 } | |
| 2220 break; | |
| 2221 } | |
| 2222 default: ShouldNotReachHere(); | |
| 2223 } | |
| 2224 } | |
| 2225 | |
| 2226 void ClassVerifier::verify_invoke_init( | |
| 6605 | 2227 RawBytecodeStream* bcs, u2 ref_class_index, VerificationType ref_class_type, |
| 0 | 2228 StackMapFrame* current_frame, u4 code_length, bool *this_uninit, |
| 2229 constantPoolHandle cp, TRAPS) { | |
| 2230 u2 bci = bcs->bci(); | |
| 2231 VerificationType type = current_frame->pop_stack( | |
| 2232 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2233 if (type == VerificationType::uninitialized_this_type()) { | |
| 6155 | 2234 // The method must be an <init> method of this class or its superclass |
|
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2235 Klass* superk = current_class()->super(); |
| 1677 | 2236 if (ref_class_type.name() != current_class()->name() && |
|
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2237 ref_class_type.name() != superk->name()) { |
| 6605 | 2238 verify_error(ErrorContext::bad_type(bci, |
| 2239 TypeOrigin::implicit(ref_class_type), | |
| 2240 TypeOrigin::implicit(current_type())), | |
| 2241 "Bad <init> method call"); | |
| 0 | 2242 return; |
| 2243 } | |
| 2244 current_frame->initialize_object(type, current_type()); | |
| 2245 *this_uninit = true; | |
| 2246 } else if (type.is_uninitialized()) { | |
| 2247 u2 new_offset = type.bci(); | |
| 2248 address new_bcp = bcs->bcp() - bci + new_offset; | |
| 2249 if (new_offset > (code_length - 3) || (*new_bcp) != Bytecodes::_new) { | |
| 6605 | 2250 /* Unreachable? Stack map parsing ensures valid type and new |
| 2251 * instructions have a valid BCI. */ | |
| 2252 verify_error(ErrorContext::bad_code(new_offset), | |
| 2253 "Expecting new instruction"); | |
| 0 | 2254 return; |
| 2255 } | |
| 2256 u2 new_class_index = Bytes::get_Java_u2(new_bcp + 1); | |
| 6605 | 2257 verify_cp_class_type(bci, new_class_index, cp, CHECK_VERIFY(this)); |
| 0 | 2258 |
| 2259 // The method must be an <init> method of the indicated class | |
| 2260 VerificationType new_class_type = cp_index_to_type( | |
| 2261 new_class_index, cp, CHECK_VERIFY(this)); | |
| 2262 if (!new_class_type.equals(ref_class_type)) { | |
| 6605 | 2263 verify_error(ErrorContext::bad_type(bci, |
| 2264 TypeOrigin::cp(new_class_index, new_class_type), | |
| 2265 TypeOrigin::cp(ref_class_index, ref_class_type)), | |
| 2266 "Call to wrong <init> method"); | |
| 0 | 2267 return; |
| 2268 } | |
| 2269 // According to the VM spec, if the referent class is a superclass of the | |
| 2270 // current class, and is in a different runtime package, and the method is | |
| 2271 // protected, then the objectref must be the current class or a subclass | |
| 2272 // of the current class. | |
| 2273 VerificationType objectref_type = new_class_type; | |
| 2274 if (name_in_supers(ref_class_type.name(), current_class())) { | |
|
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2275 Klass* ref_klass = load_class( |
| 0 | 2276 ref_class_type.name(), CHECK_VERIFY(this)); |
|
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2277 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method( |
| 0 | 2278 vmSymbols::object_initializer_name(), |
| 1565 | 2279 cp->signature_ref_at(bcs->get_index_u2())); |
| 0 | 2280 instanceKlassHandle mh(THREAD, m->method_holder()); |
| 2281 if (m->is_protected() && !mh->is_same_class_package(_klass())) { | |
| 2282 bool assignable = current_type().is_assignable_from( | |
|
2177
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diff
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|
2283 objectref_type, this, CHECK_VERIFY(this)); |
| 0 | 2284 if (!assignable) { |
| 6605 | 2285 verify_error(ErrorContext::bad_type(bci, |
| 2286 TypeOrigin::cp(new_class_index, objectref_type), | |
| 2287 TypeOrigin::implicit(current_type())), | |
| 2288 "Bad access to protected <init> method"); | |
| 0 | 2289 return; |
| 2290 } | |
| 2291 } | |
| 2292 } | |
| 2293 current_frame->initialize_object(type, new_class_type); | |
| 2294 } else { | |
| 6605 | 2295 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()), |
| 2296 "Bad operand type when invoking <init>"); | |
| 0 | 2297 return; |
| 2298 } | |
| 2299 } | |
| 2300 | |
| 2301 void ClassVerifier::verify_invoke_instructions( | |
| 2302 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame, | |
| 2303 bool *this_uninit, VerificationType return_type, | |
| 2304 constantPoolHandle cp, TRAPS) { | |
| 2305 // Make sure the constant pool item is the right type | |
| 1565 | 2306 u2 index = bcs->get_index_u2(); |
| 2307 Bytecodes::Code opcode = bcs->raw_code(); | |
| 6934 | 2308 unsigned int types; |
| 2309 switch (opcode) { | |
| 2310 case Bytecodes::_invokeinterface: | |
| 2311 types = 1 << JVM_CONSTANT_InterfaceMethodref; | |
| 2312 break; | |
| 2313 case Bytecodes::_invokedynamic: | |
| 2314 types = 1 << JVM_CONSTANT_InvokeDynamic; | |
| 2315 break; | |
| 2316 case Bytecodes::_invokespecial: | |
| 2317 types = (1 << JVM_CONSTANT_InterfaceMethodref) | | |
| 2318 (1 << JVM_CONSTANT_Methodref); | |
| 2319 break; | |
| 2320 default: | |
| 2321 types = 1 << JVM_CONSTANT_Methodref; | |
| 2322 } | |
| 6605 | 2323 verify_cp_type(bcs->bci(), index, cp, types, CHECK_VERIFY(this)); |
| 0 | 2324 |
| 2325 // Get method name and signature | |
|
2177
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diff
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|
2326 Symbol* method_name = cp->name_ref_at(index); |
|
3582bf76420e
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1980
diff
changeset
|
2327 Symbol* method_sig = cp->signature_ref_at(index); |
| 0 | 2328 |
| 2329 if (!SignatureVerifier::is_valid_method_signature(method_sig)) { | |
| 2330 class_format_error( | |
| 2331 "Invalid method signature in class %s referenced " | |
| 2332 "from constant pool index %d", _klass->external_name(), index); | |
| 2333 return; | |
| 2334 } | |
| 2335 | |
| 2336 // Get referenced class type | |
|
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diff
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|
2337 VerificationType ref_class_type; |
|
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diff
changeset
|
2338 if (opcode == Bytecodes::_invokedynamic) { |
| 1602 | 2339 if (!EnableInvokeDynamic || |
| 2340 _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) { | |
|
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diff
changeset
|
2341 class_format_error( |
| 1602 | 2342 (!EnableInvokeDynamic ? |
| 2343 "invokedynamic instructions not enabled in this JVM" : | |
| 2344 "invokedynamic instructions not supported by this class file version"), | |
|
726
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6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2345 _klass->external_name()); |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2346 return; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2347 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2348 } else { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2349 ref_class_type = cp_ref_index_to_type(index, cp, CHECK_VERIFY(this)); |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
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parents:
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diff
changeset
|
2350 } |
| 0 | 2351 |
| 2352 // For a small signature length, we just allocate 128 bytes instead | |
| 2353 // of parsing the signature once to find its size. | |
| 2354 // -3 is for '(', ')' and return descriptor; multiply by 2 is for | |
| 2355 // longs/doubles to be consertive. | |
| 2356 assert(sizeof(VerificationType) == sizeof(uintptr_t), | |
| 2357 "buffer type must match VerificationType size"); | |
| 2358 uintptr_t on_stack_sig_types_buffer[128]; | |
| 2359 // If we make a VerificationType[128] array directly, the compiler calls | |
| 2360 // to the c-runtime library to do the allocation instead of just | |
| 2361 // stack allocating it. Plus it would run constructors. This shows up | |
| 2362 // in performance profiles. | |
| 2363 | |
| 2364 VerificationType* sig_types; | |
| 2365 int size = (method_sig->utf8_length() - 3) * 2; | |
| 2366 if (size > 128) { | |
| 2367 // Long and double occupies two slots here. | |
| 2368 ArgumentSizeComputer size_it(method_sig); | |
| 2369 size = size_it.size(); | |
| 2370 sig_types = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, VerificationType, size); | |
| 2371 } else{ | |
| 2372 sig_types = (VerificationType*)on_stack_sig_types_buffer; | |
| 2373 } | |
| 2374 SignatureStream sig_stream(method_sig); | |
| 2375 int sig_i = 0; | |
| 2376 while (!sig_stream.at_return_type()) { | |
| 2377 sig_i += change_sig_to_verificationType( | |
| 2378 &sig_stream, &sig_types[sig_i], CHECK_VERIFY(this)); | |
| 2379 sig_stream.next(); | |
| 2380 } | |
| 2381 int nargs = sig_i; | |
| 2382 | |
| 2383 #ifdef ASSERT | |
| 2384 { | |
| 2385 ArgumentSizeComputer size_it(method_sig); | |
| 2386 assert(nargs == size_it.size(), "Argument sizes do not match"); | |
| 2387 assert(nargs <= (method_sig->utf8_length() - 3) * 2, "estimate of max size isn't conservative enough"); | |
| 2388 } | |
| 2389 #endif | |
| 2390 | |
| 2391 // Check instruction operands | |
| 2392 u2 bci = bcs->bci(); | |
| 2393 if (opcode == Bytecodes::_invokeinterface) { | |
| 2394 address bcp = bcs->bcp(); | |
| 2395 // 4905268: count operand in invokeinterface should be nargs+1, not nargs. | |
| 2396 // JSR202 spec: The count operand of an invokeinterface instruction is valid if it is | |
| 2397 // the difference between the size of the operand stack before and after the instruction | |
| 2398 // executes. | |
| 2399 if (*(bcp+3) != (nargs+1)) { | |
| 6605 | 2400 verify_error(ErrorContext::bad_code(bci), |
| 2401 "Inconsistent args count operand in invokeinterface"); | |
| 0 | 2402 return; |
| 2403 } | |
| 2404 if (*(bcp+4) != 0) { | |
| 6605 | 2405 verify_error(ErrorContext::bad_code(bci), |
| 2406 "Fourth operand byte of invokeinterface must be zero"); | |
| 0 | 2407 return; |
| 2408 } | |
| 2409 } | |
| 2410 | |
|
726
be93aad57795
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jrose
parents:
431
diff
changeset
|
2411 if (opcode == Bytecodes::_invokedynamic) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2412 address bcp = bcs->bcp(); |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2413 if (*(bcp+3) != 0 || *(bcp+4) != 0) { |
| 6605 | 2414 verify_error(ErrorContext::bad_code(bci), |
| 2415 "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
|
2416 return; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2417 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2418 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2419 |
| 0 | 2420 if (method_name->byte_at(0) == '<') { |
| 2421 // Make sure <init> can only be invoked by invokespecial | |
| 2422 if (opcode != Bytecodes::_invokespecial || | |
|
2177
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diff
changeset
|
2423 method_name != vmSymbols::object_initializer_name()) { |
| 6605 | 2424 verify_error(ErrorContext::bad_code(bci), |
| 2425 "Illegal call to internal method"); | |
| 0 | 2426 return; |
| 2427 } | |
| 2428 } else if (opcode == Bytecodes::_invokespecial | |
| 2429 && !ref_class_type.equals(current_type()) | |
| 2430 && !ref_class_type.equals(VerificationType::reference_type( | |
|
6725
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6608
diff
changeset
|
2431 current_class()->super()->name()))) { |
| 0 | 2432 bool subtype = ref_class_type.is_assignable_from( |
|
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diff
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|
2433 current_type(), this, CHECK_VERIFY(this)); |
| 0 | 2434 if (!subtype) { |
| 6605 | 2435 verify_error(ErrorContext::bad_code(bci), |
| 2436 "Bad invokespecial instruction: " | |
| 0 | 2437 "current class isn't assignable to reference class."); |
| 2438 return; | |
| 2439 } | |
| 2440 } | |
| 2441 // Match method descriptor with operand stack | |
| 2442 for (int i = nargs - 1; i >= 0; i--) { // Run backwards | |
| 2443 current_frame->pop_stack(sig_types[i], CHECK_VERIFY(this)); | |
| 2444 } | |
| 2445 // Check objectref on operand stack | |
|
726
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6655646: dynamic languages need dynamically linked call sites
jrose
parents:
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diff
changeset
|
2446 if (opcode != Bytecodes::_invokestatic && |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
431
diff
changeset
|
2447 opcode != Bytecodes::_invokedynamic) { |
|
2177
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1980
diff
changeset
|
2448 if (method_name == vmSymbols::object_initializer_name()) { // <init> method |
| 6605 | 2449 verify_invoke_init(bcs, index, ref_class_type, current_frame, |
| 0 | 2450 code_length, this_uninit, cp, CHECK_VERIFY(this)); |
| 2451 } else { // other methods | |
| 2452 // Ensures that target class is assignable to method class. | |
| 2453 if (opcode == Bytecodes::_invokespecial) { | |
| 2454 current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); | |
| 2455 } else if (opcode == Bytecodes::_invokevirtual) { | |
| 2456 VerificationType stack_object_type = | |
| 2457 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2458 if (current_type() != stack_object_type) { | |
| 2459 assert(cp->cache() == NULL, "not rewritten yet"); | |
|
2177
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diff
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|
2460 Symbol* ref_class_name = |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
2461 cp->klass_name_at(cp->klass_ref_index_at(index)); |
| 0 | 2462 // See the comments in verify_field_instructions() for |
| 2463 // the rationale behind this. | |
|
2177
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coleenp
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diff
changeset
|
2464 if (name_in_supers(ref_class_name, current_class())) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
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|
2465 Klass* ref_class = load_class(ref_class_name, CHECK); |
| 0 | 2466 if (is_protected_access( |
|
2177
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diff
changeset
|
2467 _klass, ref_class, method_name, method_sig, true)) { |
| 0 | 2468 // It's protected access, check if stack object is |
| 2469 // assignable to current class. | |
| 2470 bool is_assignable = current_type().is_assignable_from( | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1980
diff
changeset
|
2471 stack_object_type, this, CHECK_VERIFY(this)); |
| 0 | 2472 if (!is_assignable) { |
| 2473 if (ref_class_type.name() == vmSymbols::java_lang_Object() | |
| 2474 && stack_object_type.is_array() | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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1980
diff
changeset
|
2475 && method_name == vmSymbols::clone_name()) { |
| 0 | 2476 // Special case: arrays pretend to implement public Object |
| 2477 // clone(). | |
| 2478 } else { | |
| 6605 | 2479 verify_error(ErrorContext::bad_type(bci, |
| 2480 current_frame->stack_top_ctx(), | |
| 2481 TypeOrigin::implicit(current_type())), | |
| 2482 "Bad access to protected data in invokevirtual"); | |
| 0 | 2483 return; |
| 2484 } | |
| 2485 } | |
| 2486 } | |
| 2487 } | |
| 2488 } | |
| 2489 } else { | |
| 2490 assert(opcode == Bytecodes::_invokeinterface, "Unexpected opcode encountered"); | |
| 2491 current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this)); | |
| 2492 } | |
| 2493 } | |
| 2494 } | |
| 2495 // Push the result type. | |
| 2496 if (sig_stream.type() != T_VOID) { | |
|
2177
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coleenp
parents:
1980
diff
changeset
|
2497 if (method_name == vmSymbols::object_initializer_name()) { |
| 0 | 2498 // <init> method must have a void return type |
| 6605 | 2499 /* Unreachable? Class file parser verifies that methods with '<' have |
| 2500 * void return */ | |
| 2501 verify_error(ErrorContext::bad_code(bci), | |
| 2502 "Return type must be void in <init> method"); | |
| 0 | 2503 return; |
| 2504 } | |
| 2505 VerificationType return_type[2]; | |
| 2506 int n = change_sig_to_verificationType( | |
| 2507 &sig_stream, return_type, CHECK_VERIFY(this)); | |
| 2508 for (int i = 0; i < n; i++) { | |
| 2509 current_frame->push_stack(return_type[i], CHECK_VERIFY(this)); // push types backwards | |
| 2510 } | |
| 2511 } | |
| 2512 } | |
| 2513 | |
| 2514 VerificationType ClassVerifier::get_newarray_type( | |
| 2515 u2 index, u2 bci, TRAPS) { | |
| 2516 const char* from_bt[] = { | |
| 2517 NULL, NULL, NULL, NULL, "[Z", "[C", "[F", "[D", "[B", "[S", "[I", "[J", | |
| 2518 }; | |
| 2519 if (index < T_BOOLEAN || index > T_LONG) { | |
| 6605 | 2520 verify_error(ErrorContext::bad_code(bci), "Illegal newarray instruction"); |
| 0 | 2521 return VerificationType::bogus_type(); |
| 2522 } | |
| 2523 | |
| 2524 // from_bt[index] contains the array signature which has a length of 2 | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2525 Symbol* sig = create_temporary_symbol( |
| 0 | 2526 from_bt[index], 2, CHECK_(VerificationType::bogus_type())); |
| 2527 return VerificationType::reference_type(sig); | |
| 2528 } | |
| 2529 | |
| 2530 void ClassVerifier::verify_anewarray( | |
| 6605 | 2531 u2 bci, u2 index, constantPoolHandle cp, |
| 2532 StackMapFrame* current_frame, TRAPS) { | |
| 2533 verify_cp_class_type(bci, index, cp, CHECK_VERIFY(this)); | |
| 0 | 2534 current_frame->pop_stack( |
| 2535 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2536 | |
| 2537 VerificationType component_type = | |
| 2538 cp_index_to_type(index, cp, CHECK_VERIFY(this)); | |
| 2539 int length; | |
| 2540 char* arr_sig_str; | |
| 2541 if (component_type.is_array()) { // it's an array | |
| 2542 const char* component_name = component_type.name()->as_utf8(); | |
| 2543 // add one dimension to component | |
| 2544 length = (int)strlen(component_name) + 1; | |
| 2545 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2546 arr_sig_str[0] = '['; | |
| 2547 strncpy(&arr_sig_str[1], component_name, length - 1); | |
| 2548 } else { // it's an object or interface | |
| 2549 const char* component_name = component_type.name()->as_utf8(); | |
| 2550 // add one dimension to component with 'L' prepended and ';' postpended. | |
| 2551 length = (int)strlen(component_name) + 3; | |
| 2552 arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length); | |
| 2553 arr_sig_str[0] = '['; | |
| 2554 arr_sig_str[1] = 'L'; | |
| 2555 strncpy(&arr_sig_str[2], component_name, length - 2); | |
| 2556 arr_sig_str[length - 1] = ';'; | |
| 2557 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2558 Symbol* arr_sig = create_temporary_symbol( |
| 0 | 2559 arr_sig_str, length, CHECK_VERIFY(this)); |
| 2560 VerificationType new_array_type = VerificationType::reference_type(arr_sig); | |
| 2561 current_frame->push_stack(new_array_type, CHECK_VERIFY(this)); | |
| 2562 } | |
| 2563 | |
| 2564 void ClassVerifier::verify_iload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2565 current_frame->get_local( | |
| 2566 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2567 current_frame->push_stack( | |
| 2568 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2569 } | |
| 2570 | |
| 2571 void ClassVerifier::verify_lload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2572 current_frame->get_local_2( | |
| 2573 index, VerificationType::long_type(), | |
| 2574 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2575 current_frame->push_stack_2( | |
| 2576 VerificationType::long_type(), | |
| 2577 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2578 } | |
| 2579 | |
| 2580 void ClassVerifier::verify_fload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2581 current_frame->get_local( | |
| 2582 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2583 current_frame->push_stack( | |
| 2584 VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2585 } | |
| 2586 | |
| 2587 void ClassVerifier::verify_dload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2588 current_frame->get_local_2( | |
| 2589 index, VerificationType::double_type(), | |
| 2590 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2591 current_frame->push_stack_2( | |
| 2592 VerificationType::double_type(), | |
| 2593 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2594 } | |
| 2595 | |
| 2596 void ClassVerifier::verify_aload(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2597 VerificationType type = current_frame->get_local( | |
| 2598 index, VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2599 current_frame->push_stack(type, CHECK_VERIFY(this)); | |
| 2600 } | |
| 2601 | |
| 2602 void ClassVerifier::verify_istore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2603 current_frame->pop_stack( | |
| 2604 VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2605 current_frame->set_local( | |
| 2606 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2607 } | |
| 2608 | |
| 2609 void ClassVerifier::verify_lstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2610 current_frame->pop_stack_2( | |
| 2611 VerificationType::long2_type(), | |
| 2612 VerificationType::long_type(), CHECK_VERIFY(this)); | |
| 2613 current_frame->set_local_2( | |
| 2614 index, VerificationType::long_type(), | |
| 2615 VerificationType::long2_type(), CHECK_VERIFY(this)); | |
| 2616 } | |
| 2617 | |
| 2618 void ClassVerifier::verify_fstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2619 current_frame->pop_stack(VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2620 current_frame->set_local( | |
| 2621 index, VerificationType::float_type(), CHECK_VERIFY(this)); | |
| 2622 } | |
| 2623 | |
| 2624 void ClassVerifier::verify_dstore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2625 current_frame->pop_stack_2( | |
| 2626 VerificationType::double2_type(), | |
| 2627 VerificationType::double_type(), CHECK_VERIFY(this)); | |
| 2628 current_frame->set_local_2( | |
| 2629 index, VerificationType::double_type(), | |
| 2630 VerificationType::double2_type(), CHECK_VERIFY(this)); | |
| 2631 } | |
| 2632 | |
| 2633 void ClassVerifier::verify_astore(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2634 VerificationType type = current_frame->pop_stack( | |
| 2635 VerificationType::reference_check(), CHECK_VERIFY(this)); | |
| 2636 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2637 } | |
| 2638 | |
| 2639 void ClassVerifier::verify_iinc(u2 index, StackMapFrame* current_frame, TRAPS) { | |
| 2640 VerificationType type = current_frame->get_local( | |
| 2641 index, VerificationType::integer_type(), CHECK_VERIFY(this)); | |
| 2642 current_frame->set_local(index, type, CHECK_VERIFY(this)); | |
| 2643 } | |
| 2644 | |
| 2645 void ClassVerifier::verify_return_value( | |
| 6605 | 2646 VerificationType return_type, VerificationType type, u2 bci, |
| 2647 StackMapFrame* current_frame, TRAPS) { | |
| 0 | 2648 if (return_type == VerificationType::bogus_type()) { |
| 6605 | 2649 verify_error(ErrorContext::bad_type(bci, |
| 2650 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2651 "Method expects a return value"); | |
| 0 | 2652 return; |
| 2653 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2654 bool match = return_type.is_assignable_from(type, this, CHECK_VERIFY(this)); |
| 0 | 2655 if (!match) { |
| 6605 | 2656 verify_error(ErrorContext::bad_type(bci, |
| 2657 current_frame->stack_top_ctx(), TypeOrigin::signature(return_type)), | |
| 2658 "Bad return type"); | |
| 0 | 2659 return; |
| 2660 } | |
| 2661 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2662 |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2663 // The verifier creates symbols which are substrings of Symbols. |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2664 // These are stored in the verifier until the end of verification so that |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2665 // they can be reference counted. |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2666 Symbol* ClassVerifier::create_temporary_symbol(const Symbol *s, int begin, |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2667 int end, TRAPS) { |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2668 Symbol* sym = SymbolTable::new_symbol(s, begin, end, CHECK_NULL); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2669 _symbols->push(sym); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2670 return sym; |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2671 } |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2672 |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2673 Symbol* ClassVerifier::create_temporary_symbol(const char *s, int length, TRAPS) { |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2674 Symbol* sym = SymbolTable::new_symbol(s, length, CHECK_NULL); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2675 _symbols->push(sym); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2676 return sym; |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1980
diff
changeset
|
2677 } |